drivers/net/ethernet/rocker/rocker.c

   1 /*
   2  * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/sched.h>
  17 #include <linux/wait.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/hashtable.h>
  20 #include <linux/crc32.h>
  21 #include <linux/sort.h>
  22 #include <linux/random.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/socket.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/if_vlan.h>
  31 #include <linux/if_bridge.h>
  32 #include <linux/bitops.h>
  33 #include <linux/ctype.h>
  34 #include <net/switchdev.h>
  35 #include <net/rtnetlink.h>
  36 #include <net/ip_fib.h>
  37 #include <net/netevent.h>
  38 #include <net/arp.h>
  39 #include <asm-generic/io-64-nonatomic-lo-hi.h>
  40 #include <generated/utsrelease.h>
  41
  42 #include "rocker.h"
  43
  44 static const char rocker_driver_name[] = "rocker";
  45
  46 static const struct pci_device_id rocker_pci_id_table[] = {
  47         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  48         {0, }
  49 };
  50
  51 struct rocker_flow_tbl_key {
  52         u32 priority;
  53         enum rocker_of_dpa_table_id tbl_id;
  54         union {
  55                 struct {
  56                         u32 in_pport;
  57                         u32 in_pport_mask;
  58                         enum rocker_of_dpa_table_id goto_tbl;
  59                 } ig_port;
  60                 struct {
  61                         u32 in_pport;
  62                         __be16 vlan_id;
  63                         __be16 vlan_id_mask;
  64                         enum rocker_of_dpa_table_id goto_tbl;
  65                         bool untagged;
  66                         __be16 new_vlan_id;
  67                 } vlan;
  68                 struct {
  69                         u32 in_pport;
  70                         u32 in_pport_mask;
  71                         __be16 eth_type;
  72                         u8 eth_dst[ETH_ALEN];
  73                         u8 eth_dst_mask[ETH_ALEN];
  74                         __be16 vlan_id;
  75                         __be16 vlan_id_mask;
  76                         enum rocker_of_dpa_table_id goto_tbl;
  77                         bool copy_to_cpu;
  78                 } term_mac;
  79                 struct {
  80                         __be16 eth_type;
  81                         __be32 dst4;
  82                         __be32 dst4_mask;
  83                         enum rocker_of_dpa_table_id goto_tbl;
  84                         u32 group_id;
  85                 } ucast_routing;
  86                 struct {
  87                         u8 eth_dst[ETH_ALEN];
  88                         u8 eth_dst_mask[ETH_ALEN];
  89                         int has_eth_dst;
  90                         int has_eth_dst_mask;
  91                         __be16 vlan_id;
  92                         u32 tunnel_id;
  93                         enum rocker_of_dpa_table_id goto_tbl;
  94                         u32 group_id;
  95                         bool copy_to_cpu;
  96                 } bridge;
  97                 struct {
  98                         u32 in_pport;
  99                         u32 in_pport_mask;
 100                         u8 eth_src[ETH_ALEN];
 101                         u8 eth_src_mask[ETH_ALEN];
 102                         u8 eth_dst[ETH_ALEN];
 103                         u8 eth_dst_mask[ETH_ALEN];
 104                         __be16 eth_type;
 105                         __be16 vlan_id;
 106                         __be16 vlan_id_mask;
 107                         u8 ip_proto;
 108                         u8 ip_proto_mask;
 109                         u8 ip_tos;
 110                         u8 ip_tos_mask;
 111                         u32 group_id;
 112                 } acl;
 113         };
 114 };
 115
 116 struct rocker_flow_tbl_entry {
 117         struct hlist_node entry;
 118         u32 cmd;
 119         u64 cookie;
 120         struct rocker_flow_tbl_key key;
 121         size_t key_len;
 122         u32 key_crc32; /* key */
 123 };
 124
 125 struct rocker_group_tbl_entry {
 126         struct hlist_node entry;
 127         u32 cmd;
 128         u32 group_id; /* key */
 129         u16 group_count;
 130         u32 *group_ids;
 131         union {
 132                 struct {
 133                         u8 pop_vlan;
 134                 } l2_interface;
 135                 struct {
 136                         u8 eth_src[ETH_ALEN];
 137                         u8 eth_dst[ETH_ALEN];
 138                         __be16 vlan_id;
 139                         u32 group_id;
 140                 } l2_rewrite;
 141                 struct {
 142                         u8 eth_src[ETH_ALEN];
 143                         u8 eth_dst[ETH_ALEN];
 144                         __be16 vlan_id;
 145                         bool ttl_check;
 146                         u32 group_id;
 147                 } l3_unicast;
 148         };
 149 };
 150
 151 struct rocker_fdb_tbl_entry {
 152         struct hlist_node entry;
 153         u32 key_crc32; /* key */
 154         bool learned;
 155         struct rocker_fdb_tbl_key {
 156                 u32 pport;
 157                 u8 addr[ETH_ALEN];
 158                 __be16 vlan_id;
 159         } key;
 160 };
 161
 162 struct rocker_internal_vlan_tbl_entry {
 163         struct hlist_node entry;
 164         int ifindex; /* key */
 165         u32 ref_count;
 166         __be16 vlan_id;
 167 };
 168
 169 struct rocker_neigh_tbl_entry {
 170         struct hlist_node entry;
 171         __be32 ip_addr; /* key */
 172         struct net_device *dev;
 173         u32 ref_count;
 174         u32 index;
 175         u8 eth_dst[ETH_ALEN];
 176         bool ttl_check;
 177 };
 178
 179 struct rocker_desc_info {
 180         char *data; /* mapped */
 181         size_t data_size;
 182         size_t tlv_size;
 183         struct rocker_desc *desc;
 184         dma_addr_t mapaddr;
 185 };
 186
 187 struct rocker_dma_ring_info {
 188         size_t size;
 189         u32 head;
 190         u32 tail;
 191         struct rocker_desc *desc; /* mapped */
 192         dma_addr_t mapaddr;
 193         struct rocker_desc_info *desc_info;
 194         unsigned int type;
 195 };
 196
 197 struct rocker;
 198
 199 enum {
 200         ROCKER_CTRL_LINK_LOCAL_MCAST,
 201         ROCKER_CTRL_LOCAL_ARP,
 202         ROCKER_CTRL_IPV4_MCAST,
 203         ROCKER_CTRL_IPV6_MCAST,
 204         ROCKER_CTRL_DFLT_BRIDGING,
 205         ROCKER_CTRL_MAX,
 206 };
 207
 208 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 209 #define ROCKER_N_INTERNAL_VLANS         255
 210 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 211 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 212
 213 struct rocker_port {
 214         struct net_device *dev;
 215         struct net_device *bridge_dev;
 216         struct rocker *rocker;
 217         unsigned int port_number;
 218         u32 pport;
 219         __be16 internal_vlan_id;
 220         int stp_state;
 221         u32 brport_flags;
 222         bool ctrls[ROCKER_CTRL_MAX];
 223         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 224         struct napi_struct napi_tx;
 225         struct napi_struct napi_rx;
 226         struct rocker_dma_ring_info tx_ring;
 227         struct rocker_dma_ring_info rx_ring;
 228         struct list_head trans_mem;
 229 };
 230
 231 struct rocker {
 232         struct pci_dev *pdev;
 233         u8 __iomem *hw_addr;
 234         struct msix_entry *msix_entries;
 235         unsigned int port_count;
 236         struct rocker_port **ports;
 237         struct {
 238                 u64 id;
 239         } hw;
 240         spinlock_t cmd_ring_lock;               /* for cmd ring accesses */
 241         struct rocker_dma_ring_info cmd_ring;
 242         struct rocker_dma_ring_info event_ring;
 243         DECLARE_HASHTABLE(flow_tbl, 16);
 244         spinlock_t flow_tbl_lock;               /* for flow tbl accesses */
 245         u64 flow_tbl_next_cookie;
 246         DECLARE_HASHTABLE(group_tbl, 16);
 247         spinlock_t group_tbl_lock;              /* for group tbl accesses */
 248         DECLARE_HASHTABLE(fdb_tbl, 16);
 249         spinlock_t fdb_tbl_lock;                /* for fdb tbl accesses */
 250         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 251         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 252         spinlock_t internal_vlan_tbl_lock;      /* for vlan tbl accesses */
 253         DECLARE_HASHTABLE(neigh_tbl, 16);
 254         spinlock_t neigh_tbl_lock;              /* for neigh tbl accesses */
 255         u32 neigh_tbl_next_index;
 256 };
 257
 258 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 259 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 260 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 261 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 262 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 263 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 264 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 265 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 266 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 267
 268 /* Rocker priority levels for flow table entries.  Higher
 269  * priority match takes precedence over lower priority match.
 270  */
 271
 272 enum {
 273         ROCKER_PRIORITY_UNKNOWN = 0,
 274         ROCKER_PRIORITY_IG_PORT = 1,
 275         ROCKER_PRIORITY_VLAN = 1,
 276         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 277         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 278         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 279         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 280         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 281         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 282         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 283         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 284         ROCKER_PRIORITY_ACL_CTRL = 3,
 285         ROCKER_PRIORITY_ACL_NORMAL = 2,
 286         ROCKER_PRIORITY_ACL_DFLT = 1,
 287 };
 288
 289 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 290 {
 291         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 292         u16 end = 0xffe;
 293         u16 _vlan_id = ntohs(vlan_id);
 294
 295         return (_vlan_id >= start && _vlan_id <= end);
 296 }
 297
 298 static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port,
 299                                       u16 vid, bool *pop_vlan)
 300 {
 301         __be16 vlan_id;
 302
 303         if (pop_vlan)
 304                 *pop_vlan = false;
 305         vlan_id = htons(vid);
 306         if (!vlan_id) {
 307                 vlan_id = rocker_port->internal_vlan_id;
 308                 if (pop_vlan)
 309                         *pop_vlan = true;
 310         }
 311
 312         return vlan_id;
 313 }
 314
 315 static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port,
 316                                    __be16 vlan_id)
 317 {
 318         if (rocker_vlan_id_is_internal(vlan_id))
 319                 return 0;
 320
 321         return ntohs(vlan_id);
 322 }
 323
 324 static bool rocker_port_is_bridged(const struct rocker_port *rocker_port)
 325 {
 326         return !!rocker_port->bridge_dev;
 327 }
 328
 329 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
 330 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
 331 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
 332 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
 333
 334 static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
 335                                      enum switchdev_trans trans, int flags,
 336                                      size_t size)
 337 {
 338         struct list_head *elem = NULL;
 339         gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ?
 340                           GFP_ATOMIC : GFP_KERNEL;
 341
 342         /* If in transaction prepare phase, allocate the memory
 343          * and enqueue it on a per-port list.  If in transaction
 344          * commit phase, dequeue the memory from the per-port list
 345          * rather than re-allocating the memory.  The idea is the
 346          * driver code paths for prepare and commit are identical
 347          * so the memory allocated in the prepare phase is the
 348          * memory used in the commit phase.
 349          */
 350
 351         switch (trans) {
 352         case SWITCHDEV_TRANS_PREPARE:
 353                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 354                 if (!elem)
 355                         return NULL;
 356                 list_add_tail(elem, &rocker_port->trans_mem);
 357                 break;
 358         case SWITCHDEV_TRANS_COMMIT:
 359                 BUG_ON(list_empty(&rocker_port->trans_mem));
 360                 elem = rocker_port->trans_mem.next;
 361                 list_del_init(elem);
 362                 break;
 363         case SWITCHDEV_TRANS_NONE:
 364                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 365                 if (elem)
 366                         INIT_LIST_HEAD(elem);
 367                 break;
 368         default:
 369                 break;
 370         }
 371
 372         return elem ? elem + 1 : NULL;
 373 }
 374
 375 static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
 376                                  enum switchdev_trans trans, int flags,
 377                                  size_t size)
 378 {
 379         return __rocker_port_mem_alloc(rocker_port, trans, flags, size);
 380 }
 381
 382 static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
 383                                  enum switchdev_trans trans, int flags,
 384                                  size_t n, size_t size)
 385 {
 386         return __rocker_port_mem_alloc(rocker_port, trans, flags, n * size);
 387 }
 388
 389 static void rocker_port_kfree(enum switchdev_trans trans, const void *mem)
 390 {
 391         struct list_head *elem;
 392
 393         /* Frees are ignored if in transaction prepare phase.  The
 394          * memory remains on the per-port list until freed in the
 395          * commit phase.
 396          */
 397
 398         if (trans == SWITCHDEV_TRANS_PREPARE)
 399                 return;
 400
 401         elem = (struct list_head *)mem - 1;
 402         BUG_ON(!list_empty(elem));
 403         kfree(elem);
 404 }
 405
 406 struct rocker_wait {
 407         wait_queue_head_t wait;
 408         bool done;
 409         bool nowait;
 410 };
 411
 412 static void rocker_wait_reset(struct rocker_wait *wait)
 413 {
 414         wait->done = false;
 415         wait->nowait = false;
 416 }
 417
 418 static void rocker_wait_init(struct rocker_wait *wait)
 419 {
 420         init_waitqueue_head(&wait->wait);
 421         rocker_wait_reset(wait);
 422 }
 423
 424 static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
 425                                               enum switchdev_trans trans,
 426                                               int flags)
 427 {
 428         struct rocker_wait *wait;
 429
 430         wait = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*wait));
 431         if (!wait)
 432                 return NULL;
 433         rocker_wait_init(wait);
 434         return wait;
 435 }
 436
 437 static void rocker_wait_destroy(enum switchdev_trans trans,
 438                                 struct rocker_wait *wait)
 439 {
 440         rocker_port_kfree(trans, wait);
 441 }
 442
 443 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 444                                       unsigned long timeout)
 445 {
 446         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 447         if (!wait->done)
 448                 return false;
 449         return true;
 450 }
 451
 452 static void rocker_wait_wake_up(struct rocker_wait *wait)
 453 {
 454         wait->done = true;
 455         wake_up(&wait->wait);
 456 }
 457
 458 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
 459 {
 460         return rocker->msix_entries[vector].vector;
 461 }
 462
 463 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
 464 {
 465         return rocker_msix_vector(rocker_port->rocker,
 466                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 467 }
 468
 469 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
 470 {
 471         return rocker_msix_vector(rocker_port->rocker,
 472                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 473 }
 474
 475 #define rocker_write32(rocker, reg, val)        \
 476         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 477 #define rocker_read32(rocker, reg)      \
 478         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 479 #define rocker_write64(rocker, reg, val)        \
 480         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 481 #define rocker_read64(rocker, reg)      \
 482         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 483
 484 /*****************************
 485  * HW basic testing functions
 486  *****************************/
 487
 488 static int rocker_reg_test(const struct rocker *rocker)
 489 {
 490         const struct pci_dev *pdev = rocker->pdev;
 491         u64 test_reg;
 492         u64 rnd;
 493
 494         rnd = prandom_u32();
 495         rnd >>= 1;
 496         rocker_write32(rocker, TEST_REG, rnd);
 497         test_reg = rocker_read32(rocker, TEST_REG);
 498         if (test_reg != rnd * 2) {
 499                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 500                         test_reg, rnd * 2);
 501                 return -EIO;
 502         }
 503
 504         rnd = prandom_u32();
 505         rnd <<= 31;
 506         rnd |= prandom_u32();
 507         rocker_write64(rocker, TEST_REG64, rnd);
 508         test_reg = rocker_read64(rocker, TEST_REG64);
 509         if (test_reg != rnd * 2) {
 510                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 511                         test_reg, rnd * 2);
 512                 return -EIO;
 513         }
 514
 515         return 0;
 516 }
 517
 518 static int rocker_dma_test_one(const struct rocker *rocker,
 519                                struct rocker_wait *wait, u32 test_type,
 520                                dma_addr_t dma_handle, const unsigned char *buf,
 521                                const unsigned char *expect, size_t size)
 522 {
 523         const struct pci_dev *pdev = rocker->pdev;
 524         int i;
 525
 526         rocker_wait_reset(wait);
 527         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 528
 529         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 530                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 531                 return -EIO;
 532         }
 533
 534         for (i = 0; i < size; i++) {
 535                 if (buf[i] != expect[i]) {
 536                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 537                                 buf[i], i, expect[i]);
 538                         return -EIO;
 539                 }
 540         }
 541         return 0;
 542 }
 543
 544 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 545 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 546
 547 static int rocker_dma_test_offset(const struct rocker *rocker,
 548                                   struct rocker_wait *wait, int offset)
 549 {
 550         struct pci_dev *pdev = rocker->pdev;
 551         unsigned char *alloc;
 552         unsigned char *buf;
 553         unsigned char *expect;
 554         dma_addr_t dma_handle;
 555         int i;
 556         int err;
 557
 558         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 559                         GFP_KERNEL | GFP_DMA);
 560         if (!alloc)
 561                 return -ENOMEM;
 562         buf = alloc + offset;
 563         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 564
 565         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 566                                     PCI_DMA_BIDIRECTIONAL);
 567         if (pci_dma_mapping_error(pdev, dma_handle)) {
 568                 err = -EIO;
 569                 goto free_alloc;
 570         }
 571
 572         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 573         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 574
 575         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 576         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 577                                   dma_handle, buf, expect,
 578                                   ROCKER_TEST_DMA_BUF_SIZE);
 579         if (err)
 580                 goto unmap;
 581
 582         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 583         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 584                                   dma_handle, buf, expect,
 585                                   ROCKER_TEST_DMA_BUF_SIZE);
 586         if (err)
 587                 goto unmap;
 588
 589         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 590         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 591                 expect[i] = ~buf[i];
 592         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 593                                   dma_handle, buf, expect,
 594                                   ROCKER_TEST_DMA_BUF_SIZE);
 595         if (err)
 596                 goto unmap;
 597
 598 unmap:
 599         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 600                          PCI_DMA_BIDIRECTIONAL);
 601 free_alloc:
 602         kfree(alloc);
 603
 604         return err;
 605 }
 606
 607 static int rocker_dma_test(const struct rocker *rocker,
 608                            struct rocker_wait *wait)
 609 {
 610         int i;
 611         int err;
 612
 613         for (i = 0; i < 8; i++) {
 614                 err = rocker_dma_test_offset(rocker, wait, i);
 615                 if (err)
 616                         return err;
 617         }
 618         return 0;
 619 }
 620
 621 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 622 {
 623         struct rocker_wait *wait = dev_id;
 624
 625         rocker_wait_wake_up(wait);
 626
 627         return IRQ_HANDLED;
 628 }
 629
 630 static int rocker_basic_hw_test(const struct rocker *rocker)
 631 {
 632         const struct pci_dev *pdev = rocker->pdev;
 633         struct rocker_wait wait;
 634         int err;
 635
 636         err = rocker_reg_test(rocker);
 637         if (err) {
 638                 dev_err(&pdev->dev, "reg test failed\n");
 639                 return err;
 640         }
 641
 642         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 643                           rocker_test_irq_handler, 0,
 644                           rocker_driver_name, &wait);
 645         if (err) {
 646                 dev_err(&pdev->dev, "cannot assign test irq\n");
 647                 return err;
 648         }
 649
 650         rocker_wait_init(&wait);
 651         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 652
 653         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 654                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 655                 err = -EIO;
 656                 goto free_irq;
 657         }
 658
 659         err = rocker_dma_test(rocker, &wait);
 660         if (err)
 661                 dev_err(&pdev->dev, "dma test failed\n");
 662
 663 free_irq:
 664         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 665         return err;
 666 }
 667
 668 /******
 669  * TLV
 670  ******/
 671
 672 #define ROCKER_TLV_ALIGNTO 8U
 673 #define ROCKER_TLV_ALIGN(len) \
 674         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 675 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 676
 677 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 678  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 679  * |             Header          | Pad |           Payload           | Pad |
 680  * |      (struct rocker_tlv)    | ing |                             | ing |
 681  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 682  *  <--------------------------- tlv->len -------------------------->
 683  */
 684
 685 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 686                                           int *remaining)
 687 {
 688         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 689
 690         *remaining -= totlen;
 691         return (struct rocker_tlv *) ((char *) tlv + totlen);
 692 }
 693
 694 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 695 {
 696         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 697                tlv->len >= ROCKER_TLV_HDRLEN &&
 698                tlv->len <= remaining;
 699 }
 700
 701 #define rocker_tlv_for_each(pos, head, len, rem)        \
 702         for (pos = head, rem = len;                     \
 703              rocker_tlv_ok(pos, rem);                   \
 704              pos = rocker_tlv_next(pos, &(rem)))
 705
 706 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 707         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 708                             rocker_tlv_len(tlv), rem)
 709
 710 static int rocker_tlv_attr_size(int payload)
 711 {
 712         return ROCKER_TLV_HDRLEN + payload;
 713 }
 714
 715 static int rocker_tlv_total_size(int payload)
 716 {
 717         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 718 }
 719
 720 static int rocker_tlv_padlen(int payload)
 721 {
 722         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 723 }
 724
 725 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 726 {
 727         return tlv->type;
 728 }
 729
 730 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 731 {
 732         return (char *) tlv + ROCKER_TLV_HDRLEN;
 733 }
 734
 735 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 736 {
 737         return tlv->len - ROCKER_TLV_HDRLEN;
 738 }
 739
 740 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 741 {
 742         return *(u8 *) rocker_tlv_data(tlv);
 743 }
 744
 745 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 746 {
 747         return *(u16 *) rocker_tlv_data(tlv);
 748 }
 749
 750 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 751 {
 752         return *(__be16 *) rocker_tlv_data(tlv);
 753 }
 754
 755 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 756 {
 757         return *(u32 *) rocker_tlv_data(tlv);
 758 }
 759
 760 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 761 {
 762         return *(u64 *) rocker_tlv_data(tlv);
 763 }
 764
 765 static void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype,
 766                              const char *buf, int buf_len)
 767 {
 768         const struct rocker_tlv *tlv;
 769         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 770         int rem;
 771
 772         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 773
 774         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 775                 u32 type = rocker_tlv_type(tlv);
 776
 777                 if (type > 0 && type <= maxtype)
 778                         tb[type] = tlv;
 779         }
 780 }
 781
 782 static void rocker_tlv_parse_nested(const struct rocker_tlv **tb, int maxtype,
 783                                     const struct rocker_tlv *tlv)
 784 {
 785         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 786                          rocker_tlv_len(tlv));
 787 }
 788
 789 static void rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype,
 790                                   const struct rocker_desc_info *desc_info)
 791 {
 792         rocker_tlv_parse(tb, maxtype, desc_info->data,
 793                          desc_info->desc->tlv_size);
 794 }
 795
 796 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 797 {
 798         return (struct rocker_tlv *) ((char *) desc_info->data +
 799                                                desc_info->tlv_size);
 800 }
 801
 802 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 803                           int attrtype, int attrlen, const void *data)
 804 {
 805         int tail_room = desc_info->data_size - desc_info->tlv_size;
 806         int total_size = rocker_tlv_total_size(attrlen);
 807         struct rocker_tlv *tlv;
 808
 809         if (unlikely(tail_room < total_size))
 810                 return -EMSGSIZE;
 811
 812         tlv = rocker_tlv_start(desc_info);
 813         desc_info->tlv_size += total_size;
 814         tlv->type = attrtype;
 815         tlv->len = rocker_tlv_attr_size(attrlen);
 816         memcpy(rocker_tlv_data(tlv), data, attrlen);
 817         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 818         return 0;
 819 }
 820
 821 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 822                              int attrtype, u8 value)
 823 {
 824         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 825 }
 826
 827 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 828                               int attrtype, u16 value)
 829 {
 830         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 831 }
 832
 833 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 834                                int attrtype, __be16 value)
 835 {
 836         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 837 }
 838
 839 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 840                               int attrtype, u32 value)
 841 {
 842         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 843 }
 844
 845 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 846                                int attrtype, __be32 value)
 847 {
 848         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 849 }
 850
 851 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 852                               int attrtype, u64 value)
 853 {
 854         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 855 }
 856
 857 static struct rocker_tlv *
 858 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 859 {
 860         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 861
 862         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 863                 return NULL;
 864
 865         return start;
 866 }
 867
 868 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 869                                 struct rocker_tlv *start)
 870 {
 871         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 872 }
 873
 874 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 875                                    const struct rocker_tlv *start)
 876 {
 877         desc_info->tlv_size = (const char *) start - desc_info->data;
 878 }
 879
 880 /******************************************
 881  * DMA rings and descriptors manipulations
 882  ******************************************/
 883
 884 static u32 __pos_inc(u32 pos, size_t limit)
 885 {
 886         return ++pos == limit ? 0 : pos;
 887 }
 888
 889 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
 890 {
 891         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 892
 893         switch (err) {
 894         case ROCKER_OK:
 895                 return 0;
 896         case -ROCKER_ENOENT:
 897                 return -ENOENT;
 898         case -ROCKER_ENXIO:
 899                 return -ENXIO;
 900         case -ROCKER_ENOMEM:
 901                 return -ENOMEM;
 902         case -ROCKER_EEXIST:
 903                 return -EEXIST;
 904         case -ROCKER_EINVAL:
 905                 return -EINVAL;
 906         case -ROCKER_EMSGSIZE:
 907                 return -EMSGSIZE;
 908         case -ROCKER_ENOTSUP:
 909                 return -EOPNOTSUPP;
 910         case -ROCKER_ENOBUFS:
 911                 return -ENOBUFS;
 912         }
 913
 914         return -EINVAL;
 915 }
 916
 917 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
 918 {
 919         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 920 }
 921
 922 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
 923 {
 924         u32 comp_err = desc_info->desc->comp_err;
 925
 926         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 927 }
 928
 929 static void *rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
 930 {
 931         return (void *)(uintptr_t)desc_info->desc->cookie;
 932 }
 933
 934 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
 935                                        void *ptr)
 936 {
 937         desc_info->desc->cookie = (uintptr_t) ptr;
 938 }
 939
 940 static struct rocker_desc_info *
 941 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
 942 {
 943         static struct rocker_desc_info *desc_info;
 944         u32 head = __pos_inc(info->head, info->size);
 945
 946         desc_info = &info->desc_info[info->head];
 947         if (head == info->tail)
 948                 return NULL; /* ring full */
 949         desc_info->tlv_size = 0;
 950         return desc_info;
 951 }
 952
 953 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
 954 {
 955         desc_info->desc->buf_size = desc_info->data_size;
 956         desc_info->desc->tlv_size = desc_info->tlv_size;
 957 }
 958
 959 static void rocker_desc_head_set(const struct rocker *rocker,
 960                                  struct rocker_dma_ring_info *info,
 961                                  const struct rocker_desc_info *desc_info)
 962 {
 963         u32 head = __pos_inc(info->head, info->size);
 964
 965         BUG_ON(head == info->tail);
 966         rocker_desc_commit(desc_info);
 967         info->head = head;
 968         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 969 }
 970
 971 static struct rocker_desc_info *
 972 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 973 {
 974         static struct rocker_desc_info *desc_info;
 975
 976         if (info->tail == info->head)
 977                 return NULL; /* nothing to be done between head and tail */
 978         desc_info = &info->desc_info[info->tail];
 979         if (!rocker_desc_gen(desc_info))
 980                 return NULL; /* gen bit not set, desc is not ready yet */
 981         info->tail = __pos_inc(info->tail, info->size);
 982         desc_info->tlv_size = desc_info->desc->tlv_size;
 983         return desc_info;
 984 }
 985
 986 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
 987                                         const struct rocker_dma_ring_info *info,
 988                                         u32 credits)
 989 {
 990         if (credits)
 991                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 992 }
 993
 994 static unsigned long rocker_dma_ring_size_fix(size_t size)
 995 {
 996         return max(ROCKER_DMA_SIZE_MIN,
 997                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 998 }
 999
1000 static int rocker_dma_ring_create(const struct rocker *rocker,
1001                                   unsigned int type,
1002                                   size_t size,
1003                                   struct rocker_dma_ring_info *info)
1004 {
1005         int i;
1006
1007         BUG_ON(size != rocker_dma_ring_size_fix(size));
1008         info->size = size;
1009         info->type = type;
1010         info->head = 0;
1011         info->tail = 0;
1012         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
1013                                   GFP_KERNEL);
1014         if (!info->desc_info)
1015                 return -ENOMEM;
1016
1017         info->desc = pci_alloc_consistent(rocker->pdev,
1018                                           info->size * sizeof(*info->desc),
1019                                           &info->mapaddr);
1020         if (!info->desc) {
1021                 kfree(info->desc_info);
1022                 return -ENOMEM;
1023         }
1024
1025         for (i = 0; i < info->size; i++)
1026                 info->desc_info[i].desc = &info->desc[i];
1027
1028         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
1029                        ROCKER_DMA_DESC_CTRL_RESET);
1030         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
1031         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
1032
1033         return 0;
1034 }
1035
1036 static void rocker_dma_ring_destroy(const struct rocker *rocker,
1037                                     const struct rocker_dma_ring_info *info)
1038 {
1039         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
1040
1041         pci_free_consistent(rocker->pdev,
1042                             info->size * sizeof(struct rocker_desc),
1043                             info->desc, info->mapaddr);
1044         kfree(info->desc_info);
1045 }
1046
1047 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
1048                                              struct rocker_dma_ring_info *info)
1049 {
1050         int i;
1051
1052         BUG_ON(info->head || info->tail);
1053
1054         /* When ring is consumer, we need to advance head for each desc.
1055          * That tells hw that the desc is ready to be used by it.
1056          */
1057         for (i = 0; i < info->size - 1; i++)
1058                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
1059         rocker_desc_commit(&info->desc_info[i]);
1060 }
1061
1062 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
1063                                       const struct rocker_dma_ring_info *info,
1064                                       int direction, size_t buf_size)
1065 {
1066         struct pci_dev *pdev = rocker->pdev;
1067         int i;
1068         int err;
1069
1070         for (i = 0; i < info->size; i++) {
1071                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1072                 struct rocker_desc *desc = &info->desc[i];
1073                 dma_addr_t dma_handle;
1074                 char *buf;
1075
1076                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
1077                 if (!buf) {
1078                         err = -ENOMEM;
1079                         goto rollback;
1080                 }
1081
1082                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1083                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1084                         kfree(buf);
1085                         err = -EIO;
1086                         goto rollback;
1087                 }
1088
1089                 desc_info->data = buf;
1090                 desc_info->data_size = buf_size;
1091                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1092
1093                 desc->buf_addr = dma_handle;
1094                 desc->buf_size = buf_size;
1095         }
1096         return 0;
1097
1098 rollback:
1099         for (i--; i >= 0; i--) {
1100                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1101
1102                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1103                                  desc_info->data_size, direction);
1104                 kfree(desc_info->data);
1105         }
1106         return err;
1107 }
1108
1109 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
1110                                       const struct rocker_dma_ring_info *info,
1111                                       int direction)
1112 {
1113         struct pci_dev *pdev = rocker->pdev;
1114         int i;
1115
1116         for (i = 0; i < info->size; i++) {
1117                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1118                 struct rocker_desc *desc = &info->desc[i];
1119
1120                 desc->buf_addr = 0;
1121                 desc->buf_size = 0;
1122                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1123                                  desc_info->data_size, direction);
1124                 kfree(desc_info->data);
1125         }
1126 }
1127
1128 static int rocker_dma_rings_init(struct rocker *rocker)
1129 {
1130         const struct pci_dev *pdev = rocker->pdev;
1131         int err;
1132
1133         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1134                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1135                                      &rocker->cmd_ring);
1136         if (err) {
1137                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1138                 return err;
1139         }
1140
1141         spin_lock_init(&rocker->cmd_ring_lock);
1142
1143         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1144                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1145         if (err) {
1146                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1147                 goto err_dma_cmd_ring_bufs_alloc;
1148         }
1149
1150         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1151                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1152                                      &rocker->event_ring);
1153         if (err) {
1154                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1155                 goto err_dma_event_ring_create;
1156         }
1157
1158         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1159                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1160         if (err) {
1161                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1162                 goto err_dma_event_ring_bufs_alloc;
1163         }
1164         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1165         return 0;
1166
1167 err_dma_event_ring_bufs_alloc:
1168         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1169 err_dma_event_ring_create:
1170         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1171                                   PCI_DMA_BIDIRECTIONAL);
1172 err_dma_cmd_ring_bufs_alloc:
1173         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1174         return err;
1175 }
1176
1177 static void rocker_dma_rings_fini(struct rocker *rocker)
1178 {
1179         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1180                                   PCI_DMA_BIDIRECTIONAL);
1181         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1182         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1183                                   PCI_DMA_BIDIRECTIONAL);
1184         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1185 }
1186
1187 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
1188                                       struct rocker_desc_info *desc_info,
1189                                       struct sk_buff *skb, size_t buf_len)
1190 {
1191         const struct rocker *rocker = rocker_port->rocker;
1192         struct pci_dev *pdev = rocker->pdev;
1193         dma_addr_t dma_handle;
1194
1195         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1196                                     PCI_DMA_FROMDEVICE);
1197         if (pci_dma_mapping_error(pdev, dma_handle))
1198                 return -EIO;
1199         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1200                 goto tlv_put_failure;
1201         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1202                 goto tlv_put_failure;
1203         return 0;
1204
1205 tlv_put_failure:
1206         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1207         desc_info->tlv_size = 0;
1208         return -EMSGSIZE;
1209 }
1210
1211 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
1212 {
1213         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1214 }
1215
1216 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
1217                                         struct rocker_desc_info *desc_info)
1218 {
1219         struct net_device *dev = rocker_port->dev;
1220         struct sk_buff *skb;
1221         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1222         int err;
1223
1224         /* Ensure that hw will see tlv_size zero in case of an error.
1225          * That tells hw to use another descriptor.
1226          */
1227         rocker_desc_cookie_ptr_set(desc_info, NULL);
1228         desc_info->tlv_size = 0;
1229
1230         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1231         if (!skb)
1232                 return -ENOMEM;
1233         err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
1234         if (err) {
1235                 dev_kfree_skb_any(skb);
1236                 return err;
1237         }
1238         rocker_desc_cookie_ptr_set(desc_info, skb);
1239         return 0;
1240 }
1241
1242 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
1243                                          const struct rocker_tlv **attrs)
1244 {
1245         struct pci_dev *pdev = rocker->pdev;
1246         dma_addr_t dma_handle;
1247         size_t len;
1248
1249         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1250             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1251                 return;
1252         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1253         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1254         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1255 }
1256
1257 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
1258                                         const struct rocker_desc_info *desc_info)
1259 {
1260         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1261         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1262
1263         if (!skb)
1264                 return;
1265         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1266         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1267         dev_kfree_skb_any(skb);
1268 }
1269
1270 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
1271 {
1272         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1273         const struct rocker *rocker = rocker_port->rocker;
1274         int i;
1275         int err;
1276
1277         for (i = 0; i < rx_ring->size; i++) {
1278                 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
1279                                                    &rx_ring->desc_info[i]);
1280                 if (err)
1281                         goto rollback;
1282         }
1283         return 0;
1284
1285 rollback:
1286         for (i--; i >= 0; i--)
1287                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1288         return err;
1289 }
1290
1291 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
1292 {
1293         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1294         const struct rocker *rocker = rocker_port->rocker;
1295         int i;
1296
1297         for (i = 0; i < rx_ring->size; i++)
1298                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1299 }
1300
1301 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1302 {
1303         struct rocker *rocker = rocker_port->rocker;
1304         int err;
1305
1306         err = rocker_dma_ring_create(rocker,
1307                                      ROCKER_DMA_TX(rocker_port->port_number),
1308                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1309                                      &rocker_port->tx_ring);
1310         if (err) {
1311                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1312                 return err;
1313         }
1314
1315         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1316                                          PCI_DMA_TODEVICE,
1317                                          ROCKER_DMA_TX_DESC_SIZE);
1318         if (err) {
1319                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1320                 goto err_dma_tx_ring_bufs_alloc;
1321         }
1322
1323         err = rocker_dma_ring_create(rocker,
1324                                      ROCKER_DMA_RX(rocker_port->port_number),
1325                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1326                                      &rocker_port->rx_ring);
1327         if (err) {
1328                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1329                 goto err_dma_rx_ring_create;
1330         }
1331
1332         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1333                                          PCI_DMA_BIDIRECTIONAL,
1334                                          ROCKER_DMA_RX_DESC_SIZE);
1335         if (err) {
1336                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1337                 goto err_dma_rx_ring_bufs_alloc;
1338         }
1339
1340         err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
1341         if (err) {
1342                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1343                 goto err_dma_rx_ring_skbs_alloc;
1344         }
1345         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1346
1347         return 0;
1348
1349 err_dma_rx_ring_skbs_alloc:
1350         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1351                                   PCI_DMA_BIDIRECTIONAL);
1352 err_dma_rx_ring_bufs_alloc:
1353         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1354 err_dma_rx_ring_create:
1355         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1356                                   PCI_DMA_TODEVICE);
1357 err_dma_tx_ring_bufs_alloc:
1358         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1359         return err;
1360 }
1361
1362 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1363 {
1364         struct rocker *rocker = rocker_port->rocker;
1365
1366         rocker_dma_rx_ring_skbs_free(rocker_port);
1367         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1368                                   PCI_DMA_BIDIRECTIONAL);
1369         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1370         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1371                                   PCI_DMA_TODEVICE);
1372         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1373 }
1374
1375 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
1376                                    bool enable)
1377 {
1378         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1379
1380         if (enable)
1381                 val |= 1ULL << rocker_port->pport;
1382         else
1383                 val &= ~(1ULL << rocker_port->pport);
1384         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1385 }
1386
1387 /********************************
1388  * Interrupt handler and helpers
1389  ********************************/
1390
1391 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1392 {
1393         struct rocker *rocker = dev_id;
1394         const struct rocker_desc_info *desc_info;
1395         struct rocker_wait *wait;
1396         u32 credits = 0;
1397
1398         spin_lock(&rocker->cmd_ring_lock);
1399         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1400                 wait = rocker_desc_cookie_ptr_get(desc_info);
1401                 if (wait->nowait) {
1402                         rocker_desc_gen_clear(desc_info);
1403                         rocker_wait_destroy(SWITCHDEV_TRANS_NONE, wait);
1404                 } else {
1405                         rocker_wait_wake_up(wait);
1406                 }
1407                 credits++;
1408         }
1409         spin_unlock(&rocker->cmd_ring_lock);
1410         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1411
1412         return IRQ_HANDLED;
1413 }
1414
1415 static void rocker_port_link_up(const struct rocker_port *rocker_port)
1416 {
1417         netif_carrier_on(rocker_port->dev);
1418         netdev_info(rocker_port->dev, "Link is up\n");
1419 }
1420
1421 static void rocker_port_link_down(const struct rocker_port *rocker_port)
1422 {
1423         netif_carrier_off(rocker_port->dev);
1424         netdev_info(rocker_port->dev, "Link is down\n");
1425 }
1426
1427 static int rocker_event_link_change(const struct rocker *rocker,
1428                                     const struct rocker_tlv *info)
1429 {
1430         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1431         unsigned int port_number;
1432         bool link_up;
1433         struct rocker_port *rocker_port;
1434
1435         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1436         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1437             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1438                 return -EIO;
1439         port_number =
1440                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1441         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1442
1443         if (port_number >= rocker->port_count)
1444                 return -EINVAL;
1445
1446         rocker_port = rocker->ports[port_number];
1447         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1448                 if (link_up)
1449                         rocker_port_link_up(rocker_port);
1450                 else
1451                         rocker_port_link_down(rocker_port);
1452         }
1453
1454         return 0;
1455 }
1456
1457 static int rocker_port_fdb(struct rocker_port *rocker_port,
1458                            enum switchdev_trans trans,
1459                            const unsigned char *addr,
1460                            __be16 vlan_id, int flags);
1461
1462 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
1463                                       const struct rocker_tlv *info)
1464 {
1465         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1466         unsigned int port_number;
1467         struct rocker_port *rocker_port;
1468         const unsigned char *addr;
1469         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1470         __be16 vlan_id;
1471
1472         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1473         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1474             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1475             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1476                 return -EIO;
1477         port_number =
1478                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1479         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1480         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1481
1482         if (port_number >= rocker->port_count)
1483                 return -EINVAL;
1484
1485         rocker_port = rocker->ports[port_number];
1486
1487         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1488             rocker_port->stp_state != BR_STATE_FORWARDING)
1489                 return 0;
1490
1491         return rocker_port_fdb(rocker_port, SWITCHDEV_TRANS_NONE,
1492                                addr, vlan_id, flags);
1493 }
1494
1495 static int rocker_event_process(const struct rocker *rocker,
1496                                 const struct rocker_desc_info *desc_info)
1497 {
1498         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1499         const struct rocker_tlv *info;
1500         u16 type;
1501
1502         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1503         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1504             !attrs[ROCKER_TLV_EVENT_INFO])
1505                 return -EIO;
1506
1507         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1508         info = attrs[ROCKER_TLV_EVENT_INFO];
1509
1510         switch (type) {
1511         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1512                 return rocker_event_link_change(rocker, info);
1513         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1514                 return rocker_event_mac_vlan_seen(rocker, info);
1515         }
1516
1517         return -EOPNOTSUPP;
1518 }
1519
1520 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1521 {
1522         struct rocker *rocker = dev_id;
1523         const struct pci_dev *pdev = rocker->pdev;
1524         const struct rocker_desc_info *desc_info;
1525         u32 credits = 0;
1526         int err;
1527
1528         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1529                 err = rocker_desc_err(desc_info);
1530                 if (err) {
1531                         dev_err(&pdev->dev, "event desc received with err %d\n",
1532                                 err);
1533                 } else {
1534                         err = rocker_event_process(rocker, desc_info);
1535                         if (err)
1536                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1537                                         err);
1538                 }
1539                 rocker_desc_gen_clear(desc_info);
1540                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1541                 credits++;
1542         }
1543         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1544
1545         return IRQ_HANDLED;
1546 }
1547
1548 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1549 {
1550         struct rocker_port *rocker_port = dev_id;
1551
1552         napi_schedule(&rocker_port->napi_tx);
1553         return IRQ_HANDLED;
1554 }
1555
1556 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1557 {
1558         struct rocker_port *rocker_port = dev_id;
1559
1560         napi_schedule(&rocker_port->napi_rx);
1561         return IRQ_HANDLED;
1562 }
1563
1564 /********************
1565  * Command interface
1566  ********************/
1567
1568 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
1569                                     struct rocker_desc_info *desc_info,
1570                                     void *priv);
1571
1572 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
1573                                     const struct rocker_desc_info *desc_info,
1574                                     void *priv);
1575
1576 static int rocker_cmd_exec(struct rocker_port *rocker_port,
1577                            enum switchdev_trans trans, int flags,
1578                            rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1579                            rocker_cmd_proc_cb_t process, void *process_priv)
1580 {
1581         struct rocker *rocker = rocker_port->rocker;
1582         struct rocker_desc_info *desc_info;
1583         struct rocker_wait *wait;
1584         bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
1585         unsigned long lock_flags;
1586         int err;
1587
1588         wait = rocker_wait_create(rocker_port, trans, flags);
1589         if (!wait)
1590                 return -ENOMEM;
1591         wait->nowait = nowait;
1592
1593         spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1594
1595         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1596         if (!desc_info) {
1597                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1598                 err = -EAGAIN;
1599                 goto out;
1600         }
1601
1602         err = prepare(rocker_port, desc_info, prepare_priv);
1603         if (err) {
1604                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1605                 goto out;
1606         }
1607
1608         rocker_desc_cookie_ptr_set(desc_info, wait);
1609
1610         if (trans != SWITCHDEV_TRANS_PREPARE)
1611                 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1612
1613         spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1614
1615         if (nowait)
1616                 return 0;
1617
1618         if (trans != SWITCHDEV_TRANS_PREPARE)
1619                 if (!rocker_wait_event_timeout(wait, HZ / 10))
1620                         return -EIO;
1621
1622         err = rocker_desc_err(desc_info);
1623         if (err)
1624                 return err;
1625
1626         if (process)
1627                 err = process(rocker_port, desc_info, process_priv);
1628
1629         rocker_desc_gen_clear(desc_info);
1630 out:
1631         rocker_wait_destroy(trans, wait);
1632         return err;
1633 }
1634
1635 static int
1636 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1637                                   struct rocker_desc_info *desc_info,
1638                                   void *priv)
1639 {
1640         struct rocker_tlv *cmd_info;
1641
1642         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1643                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1644                 return -EMSGSIZE;
1645         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1646         if (!cmd_info)
1647                 return -EMSGSIZE;
1648         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1649                                rocker_port->pport))
1650                 return -EMSGSIZE;
1651         rocker_tlv_nest_end(desc_info, cmd_info);
1652         return 0;
1653 }
1654
1655 static int
1656 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1657                                           const struct rocker_desc_info *desc_info,
1658                                           void *priv)
1659 {
1660         struct ethtool_cmd *ecmd = priv;
1661         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1662         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1663         u32 speed;
1664         u8 duplex;
1665         u8 autoneg;
1666
1667         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1668         if (!attrs[ROCKER_TLV_CMD_INFO])
1669                 return -EIO;
1670
1671         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1672                                 attrs[ROCKER_TLV_CMD_INFO]);
1673         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1674             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1675             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1676                 return -EIO;
1677
1678         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1679         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1680         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1681
1682         ecmd->transceiver = XCVR_INTERNAL;
1683         ecmd->supported = SUPPORTED_TP;
1684         ecmd->phy_address = 0xff;
1685         ecmd->port = PORT_TP;
1686         ethtool_cmd_speed_set(ecmd, speed);
1687         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1688         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1689
1690         return 0;
1691 }
1692
1693 static int
1694 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1695                                           const struct rocker_desc_info *desc_info,
1696                                           void *priv)
1697 {
1698         unsigned char *macaddr = priv;
1699         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1700         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1701         const struct rocker_tlv *attr;
1702
1703         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1704         if (!attrs[ROCKER_TLV_CMD_INFO])
1705                 return -EIO;
1706
1707         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1708                                 attrs[ROCKER_TLV_CMD_INFO]);
1709         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1710         if (!attr)
1711                 return -EIO;
1712
1713         if (rocker_tlv_len(attr) != ETH_ALEN)
1714                 return -EINVAL;
1715
1716         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1717         return 0;
1718 }
1719
1720 struct port_name {
1721         char *buf;
1722         size_t len;
1723 };
1724
1725 static int
1726 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1727                                             const struct rocker_desc_info *desc_info,
1728                                             void *priv)
1729 {
1730         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1731         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1732         struct port_name *name = priv;
1733         const struct rocker_tlv *attr;
1734         size_t i, j, len;
1735         const char *str;
1736
1737         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1738         if (!attrs[ROCKER_TLV_CMD_INFO])
1739                 return -EIO;
1740
1741         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1742                                 attrs[ROCKER_TLV_CMD_INFO]);
1743         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1744         if (!attr)
1745                 return -EIO;
1746
1747         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1748         str = rocker_tlv_data(attr);
1749
1750         /* make sure name only contains alphanumeric characters */
1751         for (i = j = 0; i < len; ++i) {
1752                 if (isalnum(str[i])) {
1753                         name->buf[j] = str[i];
1754                         j++;
1755                 }
1756         }
1757
1758         if (j == 0)
1759                 return -EIO;
1760
1761         name->buf[j] = '\0';
1762
1763         return 0;
1764 }
1765
1766 static int
1767 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1768                                           struct rocker_desc_info *desc_info,
1769                                           void *priv)
1770 {
1771         struct ethtool_cmd *ecmd = priv;
1772         struct rocker_tlv *cmd_info;
1773
1774         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1775                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1776                 return -EMSGSIZE;
1777         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1778         if (!cmd_info)
1779                 return -EMSGSIZE;
1780         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1781                                rocker_port->pport))
1782                 return -EMSGSIZE;
1783         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1784                                ethtool_cmd_speed(ecmd)))
1785                 return -EMSGSIZE;
1786         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1787                               ecmd->duplex))
1788                 return -EMSGSIZE;
1789         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1790                               ecmd->autoneg))
1791                 return -EMSGSIZE;
1792         rocker_tlv_nest_end(desc_info, cmd_info);
1793         return 0;
1794 }
1795
1796 static int
1797 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1798                                           struct rocker_desc_info *desc_info,
1799                                           void *priv)
1800 {
1801         const unsigned char *macaddr = priv;
1802         struct rocker_tlv *cmd_info;
1803
1804         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1805                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1806                 return -EMSGSIZE;
1807         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1808         if (!cmd_info)
1809                 return -EMSGSIZE;
1810         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1811                                rocker_port->pport))
1812                 return -EMSGSIZE;
1813         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1814                            ETH_ALEN, macaddr))
1815                 return -EMSGSIZE;
1816         rocker_tlv_nest_end(desc_info, cmd_info);
1817         return 0;
1818 }
1819
1820 static int
1821 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1822                                       struct rocker_desc_info *desc_info,
1823                                       void *priv)
1824 {
1825         int mtu = *(int *)priv;
1826         struct rocker_tlv *cmd_info;
1827
1828         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1829                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1830                 return -EMSGSIZE;
1831         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1832         if (!cmd_info)
1833                 return -EMSGSIZE;
1834         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1835                                rocker_port->pport))
1836                 return -EMSGSIZE;
1837         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1838                                mtu))
1839                 return -EMSGSIZE;
1840         rocker_tlv_nest_end(desc_info, cmd_info);
1841         return 0;
1842 }
1843
1844 static int
1845 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1846                                   struct rocker_desc_info *desc_info,
1847                                   void *priv)
1848 {
1849         struct rocker_tlv *cmd_info;
1850
1851         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1852                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1853                 return -EMSGSIZE;
1854         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1855         if (!cmd_info)
1856                 return -EMSGSIZE;
1857         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1858                                rocker_port->pport))
1859                 return -EMSGSIZE;
1860         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1861                               !!(rocker_port->brport_flags & BR_LEARNING)))
1862                 return -EMSGSIZE;
1863         rocker_tlv_nest_end(desc_info, cmd_info);
1864         return 0;
1865 }
1866
1867 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1868                                                 struct ethtool_cmd *ecmd)
1869 {
1870         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1871                                rocker_cmd_get_port_settings_prep, NULL,
1872                                rocker_cmd_get_port_settings_ethtool_proc,
1873                                ecmd);
1874 }
1875
1876 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1877                                                 unsigned char *macaddr)
1878 {
1879         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1880                                rocker_cmd_get_port_settings_prep, NULL,
1881                                rocker_cmd_get_port_settings_macaddr_proc,
1882                                macaddr);
1883 }
1884
1885 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1886                                                 struct ethtool_cmd *ecmd)
1887 {
1888         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1889                                rocker_cmd_set_port_settings_ethtool_prep,
1890                                ecmd, NULL, NULL);
1891 }
1892
1893 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1894                                                 unsigned char *macaddr)
1895 {
1896         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1897                                rocker_cmd_set_port_settings_macaddr_prep,
1898                                macaddr, NULL, NULL);
1899 }
1900
1901 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1902                                             int mtu)
1903 {
1904         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1905                                rocker_cmd_set_port_settings_mtu_prep,
1906                                &mtu, NULL, NULL);
1907 }
1908
1909 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1910                                     enum switchdev_trans trans)
1911 {
1912         return rocker_cmd_exec(rocker_port, trans, 0,
1913                                rocker_cmd_set_port_learning_prep,
1914                                NULL, NULL, NULL);
1915 }
1916
1917 static int
1918 rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1919                                 const struct rocker_flow_tbl_entry *entry)
1920 {
1921         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1922                                entry->key.ig_port.in_pport))
1923                 return -EMSGSIZE;
1924         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1925                                entry->key.ig_port.in_pport_mask))
1926                 return -EMSGSIZE;
1927         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1928                                entry->key.ig_port.goto_tbl))
1929                 return -EMSGSIZE;
1930
1931         return 0;
1932 }
1933
1934 static int
1935 rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1936                              const struct rocker_flow_tbl_entry *entry)
1937 {
1938         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1939                                entry->key.vlan.in_pport))
1940                 return -EMSGSIZE;
1941         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1942                                 entry->key.vlan.vlan_id))
1943                 return -EMSGSIZE;
1944         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1945                                 entry->key.vlan.vlan_id_mask))
1946                 return -EMSGSIZE;
1947         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1948                                entry->key.vlan.goto_tbl))
1949                 return -EMSGSIZE;
1950         if (entry->key.vlan.untagged &&
1951             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1952                                 entry->key.vlan.new_vlan_id))
1953                 return -EMSGSIZE;
1954
1955         return 0;
1956 }
1957
1958 static int
1959 rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1960                                  const struct rocker_flow_tbl_entry *entry)
1961 {
1962         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1963                                entry->key.term_mac.in_pport))
1964                 return -EMSGSIZE;
1965         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1966                                entry->key.term_mac.in_pport_mask))
1967                 return -EMSGSIZE;
1968         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1969                                 entry->key.term_mac.eth_type))
1970                 return -EMSGSIZE;
1971         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1972                            ETH_ALEN, entry->key.term_mac.eth_dst))
1973                 return -EMSGSIZE;
1974         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1975                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1976                 return -EMSGSIZE;
1977         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1978                                 entry->key.term_mac.vlan_id))
1979                 return -EMSGSIZE;
1980         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1981                                 entry->key.term_mac.vlan_id_mask))
1982                 return -EMSGSIZE;
1983         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1984                                entry->key.term_mac.goto_tbl))
1985                 return -EMSGSIZE;
1986         if (entry->key.term_mac.copy_to_cpu &&
1987             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1988                               entry->key.term_mac.copy_to_cpu))
1989                 return -EMSGSIZE;
1990
1991         return 0;
1992 }
1993
1994 static int
1995 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1996                                       const struct rocker_flow_tbl_entry *entry)
1997 {
1998         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1999                                 entry->key.ucast_routing.eth_type))
2000                 return -EMSGSIZE;
2001         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
2002                                 entry->key.ucast_routing.dst4))
2003                 return -EMSGSIZE;
2004         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
2005                                 entry->key.ucast_routing.dst4_mask))
2006                 return -EMSGSIZE;
2007         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2008                                entry->key.ucast_routing.goto_tbl))
2009                 return -EMSGSIZE;
2010         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2011                                entry->key.ucast_routing.group_id))
2012                 return -EMSGSIZE;
2013
2014         return 0;
2015 }
2016
2017 static int
2018 rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2019                                const struct rocker_flow_tbl_entry *entry)
2020 {
2021         if (entry->key.bridge.has_eth_dst &&
2022             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2023                            ETH_ALEN, entry->key.bridge.eth_dst))
2024                 return -EMSGSIZE;
2025         if (entry->key.bridge.has_eth_dst_mask &&
2026             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2027                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
2028                 return -EMSGSIZE;
2029         if (entry->key.bridge.vlan_id &&
2030             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2031                                 entry->key.bridge.vlan_id))
2032                 return -EMSGSIZE;
2033         if (entry->key.bridge.tunnel_id &&
2034             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2035                                entry->key.bridge.tunnel_id))
2036                 return -EMSGSIZE;
2037         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2038                                entry->key.bridge.goto_tbl))
2039                 return -EMSGSIZE;
2040         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2041                                entry->key.bridge.group_id))
2042                 return -EMSGSIZE;
2043         if (entry->key.bridge.copy_to_cpu &&
2044             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2045                               entry->key.bridge.copy_to_cpu))
2046                 return -EMSGSIZE;
2047
2048         return 0;
2049 }
2050
2051 static int
2052 rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2053                             const struct rocker_flow_tbl_entry *entry)
2054 {
2055         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2056                                entry->key.acl.in_pport))
2057                 return -EMSGSIZE;
2058         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2059                                entry->key.acl.in_pport_mask))
2060                 return -EMSGSIZE;
2061         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2062                            ETH_ALEN, entry->key.acl.eth_src))
2063                 return -EMSGSIZE;
2064         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2065                            ETH_ALEN, entry->key.acl.eth_src_mask))
2066                 return -EMSGSIZE;
2067         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2068                            ETH_ALEN, entry->key.acl.eth_dst))
2069                 return -EMSGSIZE;
2070         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2071                            ETH_ALEN, entry->key.acl.eth_dst_mask))
2072                 return -EMSGSIZE;
2073         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2074                                 entry->key.acl.eth_type))
2075                 return -EMSGSIZE;
2076         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2077                                 entry->key.acl.vlan_id))
2078                 return -EMSGSIZE;
2079         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2080                                 entry->key.acl.vlan_id_mask))
2081                 return -EMSGSIZE;
2082
2083         switch (ntohs(entry->key.acl.eth_type)) {
2084         case ETH_P_IP:
2085         case ETH_P_IPV6:
2086                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2087                                       entry->key.acl.ip_proto))
2088                         return -EMSGSIZE;
2089                 if (rocker_tlv_put_u8(desc_info,
2090                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2091                                       entry->key.acl.ip_proto_mask))
2092                         return -EMSGSIZE;
2093                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2094                                       entry->key.acl.ip_tos & 0x3f))
2095                         return -EMSGSIZE;
2096                 if (rocker_tlv_put_u8(desc_info,
2097                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2098                                       entry->key.acl.ip_tos_mask & 0x3f))
2099                         return -EMSGSIZE;
2100                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2101                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
2102                         return -EMSGSIZE;
2103                 if (rocker_tlv_put_u8(desc_info,
2104                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2105                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2106                         return -EMSGSIZE;
2107                 break;
2108         }
2109
2110         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2111             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2112                                entry->key.acl.group_id))
2113                 return -EMSGSIZE;
2114
2115         return 0;
2116 }
2117
2118 static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
2119                                    struct rocker_desc_info *desc_info,
2120                                    void *priv)
2121 {
2122         const struct rocker_flow_tbl_entry *entry = priv;
2123         struct rocker_tlv *cmd_info;
2124         int err = 0;
2125
2126         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2127                 return -EMSGSIZE;
2128         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2129         if (!cmd_info)
2130                 return -EMSGSIZE;
2131         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2132                                entry->key.tbl_id))
2133                 return -EMSGSIZE;
2134         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2135                                entry->key.priority))
2136                 return -EMSGSIZE;
2137         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2138                 return -EMSGSIZE;
2139         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2140                                entry->cookie))
2141                 return -EMSGSIZE;
2142
2143         switch (entry->key.tbl_id) {
2144         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2145                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2146                 break;
2147         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2148                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2149                 break;
2150         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2151                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2152                 break;
2153         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2154                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2155                 break;
2156         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2157                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2158                 break;
2159         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2160                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2161                 break;
2162         default:
2163                 err = -ENOTSUPP;
2164                 break;
2165         }
2166
2167         if (err)
2168                 return err;
2169
2170         rocker_tlv_nest_end(desc_info, cmd_info);
2171
2172         return 0;
2173 }
2174
2175 static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
2176                                    struct rocker_desc_info *desc_info,
2177                                    void *priv)
2178 {
2179         const struct rocker_flow_tbl_entry *entry = priv;
2180         struct rocker_tlv *cmd_info;
2181
2182         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2183                 return -EMSGSIZE;
2184         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2185         if (!cmd_info)
2186                 return -EMSGSIZE;
2187         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2188                                entry->cookie))
2189                 return -EMSGSIZE;
2190         rocker_tlv_nest_end(desc_info, cmd_info);
2191
2192         return 0;
2193 }
2194
2195 static int
2196 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2197                                       struct rocker_group_tbl_entry *entry)
2198 {
2199         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2200                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2201                 return -EMSGSIZE;
2202         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2203                               entry->l2_interface.pop_vlan))
2204                 return -EMSGSIZE;
2205
2206         return 0;
2207 }
2208
2209 static int
2210 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2211                                     const struct rocker_group_tbl_entry *entry)
2212 {
2213         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2214                                entry->l2_rewrite.group_id))
2215                 return -EMSGSIZE;
2216         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2217             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2218                            ETH_ALEN, entry->l2_rewrite.eth_src))
2219                 return -EMSGSIZE;
2220         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2221             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2222                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2223                 return -EMSGSIZE;
2224         if (entry->l2_rewrite.vlan_id &&
2225             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2226                                 entry->l2_rewrite.vlan_id))
2227                 return -EMSGSIZE;
2228
2229         return 0;
2230 }
2231
2232 static int
2233 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2234                                    const struct rocker_group_tbl_entry *entry)
2235 {
2236         int i;
2237         struct rocker_tlv *group_ids;
2238
2239         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2240                                entry->group_count))
2241                 return -EMSGSIZE;
2242
2243         group_ids = rocker_tlv_nest_start(desc_info,
2244                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2245         if (!group_ids)
2246                 return -EMSGSIZE;
2247
2248         for (i = 0; i < entry->group_count; i++)
2249                 /* Note TLV array is 1-based */
2250                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2251                         return -EMSGSIZE;
2252
2253         rocker_tlv_nest_end(desc_info, group_ids);
2254
2255         return 0;
2256 }
2257
2258 static int
2259 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2260                                     const struct rocker_group_tbl_entry *entry)
2261 {
2262         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2263             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2264                            ETH_ALEN, entry->l3_unicast.eth_src))
2265                 return -EMSGSIZE;
2266         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2267             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2268                            ETH_ALEN, entry->l3_unicast.eth_dst))
2269                 return -EMSGSIZE;
2270         if (entry->l3_unicast.vlan_id &&
2271             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2272                                 entry->l3_unicast.vlan_id))
2273                 return -EMSGSIZE;
2274         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2275                               entry->l3_unicast.ttl_check))
2276                 return -EMSGSIZE;
2277         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2278                                entry->l3_unicast.group_id))
2279                 return -EMSGSIZE;
2280
2281         return 0;
2282 }
2283
2284 static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
2285                                     struct rocker_desc_info *desc_info,
2286                                     void *priv)
2287 {
2288         struct rocker_group_tbl_entry *entry = priv;
2289         struct rocker_tlv *cmd_info;
2290         int err = 0;
2291
2292         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2293                 return -EMSGSIZE;
2294         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2295         if (!cmd_info)
2296                 return -EMSGSIZE;
2297
2298         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2299                                entry->group_id))
2300                 return -EMSGSIZE;
2301
2302         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2303         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2304                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2305                 break;
2306         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2307                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2308                 break;
2309         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2310         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2311                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2312                 break;
2313         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2314                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2315                 break;
2316         default:
2317                 err = -ENOTSUPP;
2318                 break;
2319         }
2320
2321         if (err)
2322                 return err;
2323
2324         rocker_tlv_nest_end(desc_info, cmd_info);
2325
2326         return 0;
2327 }
2328
2329 static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
2330                                     struct rocker_desc_info *desc_info,
2331                                     void *priv)
2332 {
2333         const struct rocker_group_tbl_entry *entry = priv;
2334         struct rocker_tlv *cmd_info;
2335
2336         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2337                 return -EMSGSIZE;
2338         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2339         if (!cmd_info)
2340                 return -EMSGSIZE;
2341         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2342                                entry->group_id))
2343                 return -EMSGSIZE;
2344         rocker_tlv_nest_end(desc_info, cmd_info);
2345
2346         return 0;
2347 }
2348
2349 /***************************************************
2350  * Flow, group, FDB, internal VLAN and neigh tables
2351  ***************************************************/
2352
2353 static int rocker_init_tbls(struct rocker *rocker)
2354 {
2355         hash_init(rocker->flow_tbl);
2356         spin_lock_init(&rocker->flow_tbl_lock);
2357
2358         hash_init(rocker->group_tbl);
2359         spin_lock_init(&rocker->group_tbl_lock);
2360
2361         hash_init(rocker->fdb_tbl);
2362         spin_lock_init(&rocker->fdb_tbl_lock);
2363
2364         hash_init(rocker->internal_vlan_tbl);
2365         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2366
2367         hash_init(rocker->neigh_tbl);
2368         spin_lock_init(&rocker->neigh_tbl_lock);
2369
2370         return 0;
2371 }
2372
2373 static void rocker_free_tbls(struct rocker *rocker)
2374 {
2375         unsigned long flags;
2376         struct rocker_flow_tbl_entry *flow_entry;
2377         struct rocker_group_tbl_entry *group_entry;
2378         struct rocker_fdb_tbl_entry *fdb_entry;
2379         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2380         struct rocker_neigh_tbl_entry *neigh_entry;
2381         struct hlist_node *tmp;
2382         int bkt;
2383
2384         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2385         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2386                 hash_del(&flow_entry->entry);
2387         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2388
2389         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2390         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2391                 hash_del(&group_entry->entry);
2392         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2393
2394         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2395         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2396                 hash_del(&fdb_entry->entry);
2397         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2398
2399         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2400         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2401                            tmp, internal_vlan_entry, entry)
2402                 hash_del(&internal_vlan_entry->entry);
2403         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2404
2405         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2406         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2407                 hash_del(&neigh_entry->entry);
2408         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2409 }
2410
2411 static struct rocker_flow_tbl_entry *
2412 rocker_flow_tbl_find(const struct rocker *rocker,
2413                      const struct rocker_flow_tbl_entry *match)
2414 {
2415         struct rocker_flow_tbl_entry *found;
2416         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2417
2418         hash_for_each_possible(rocker->flow_tbl, found,
2419                                entry, match->key_crc32) {
2420                 if (memcmp(&found->key, &match->key, key_len) == 0)
2421                         return found;
2422         }
2423
2424         return NULL;
2425 }
2426
2427 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2428                                enum switchdev_trans trans, int flags,
2429                                struct rocker_flow_tbl_entry *match)
2430 {
2431         struct rocker *rocker = rocker_port->rocker;
2432         struct rocker_flow_tbl_entry *found;
2433         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2434         unsigned long lock_flags;
2435
2436         match->key_crc32 = crc32(~0, &match->key, key_len);
2437
2438         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2439
2440         found = rocker_flow_tbl_find(rocker, match);
2441
2442         if (found) {
2443                 match->cookie = found->cookie;
2444                 if (trans != SWITCHDEV_TRANS_PREPARE)
2445                         hash_del(&found->entry);
2446                 rocker_port_kfree(trans, found);
2447                 found = match;
2448                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2449         } else {
2450                 found = match;
2451                 found->cookie = rocker->flow_tbl_next_cookie++;
2452                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2453         }
2454
2455         if (trans != SWITCHDEV_TRANS_PREPARE)
2456                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2457
2458         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2459
2460         return rocker_cmd_exec(rocker_port, trans, flags,
2461                                rocker_cmd_flow_tbl_add, found, NULL, NULL);
2462 }
2463
2464 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2465                                enum switchdev_trans trans, int flags,
2466                                struct rocker_flow_tbl_entry *match)
2467 {
2468         struct rocker *rocker = rocker_port->rocker;
2469         struct rocker_flow_tbl_entry *found;
2470         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2471         unsigned long lock_flags;
2472         int err = 0;
2473
2474         match->key_crc32 = crc32(~0, &match->key, key_len);
2475
2476         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2477
2478         found = rocker_flow_tbl_find(rocker, match);
2479
2480         if (found) {
2481                 if (trans != SWITCHDEV_TRANS_PREPARE)
2482                         hash_del(&found->entry);
2483                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2484         }
2485
2486         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2487
2488         rocker_port_kfree(trans, match);
2489
2490         if (found) {
2491                 err = rocker_cmd_exec(rocker_port, trans, flags,
2492                                       rocker_cmd_flow_tbl_del,
2493                                       found, NULL, NULL);
2494                 rocker_port_kfree(trans, found);
2495         }
2496
2497         return err;
2498 }
2499
2500 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2501                               enum switchdev_trans trans, int flags,
2502                               struct rocker_flow_tbl_entry *entry)
2503 {
2504         if (flags & ROCKER_OP_FLAG_REMOVE)
2505                 return rocker_flow_tbl_del(rocker_port, trans, flags, entry);
2506         else
2507                 return rocker_flow_tbl_add(rocker_port, trans, flags, entry);
2508 }
2509
2510 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2511                                    enum switchdev_trans trans, int flags,
2512                                    u32 in_pport, u32 in_pport_mask,
2513                                    enum rocker_of_dpa_table_id goto_tbl)
2514 {
2515         struct rocker_flow_tbl_entry *entry;
2516
2517         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2518         if (!entry)
2519                 return -ENOMEM;
2520
2521         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2522         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2523         entry->key.ig_port.in_pport = in_pport;
2524         entry->key.ig_port.in_pport_mask = in_pport_mask;
2525         entry->key.ig_port.goto_tbl = goto_tbl;
2526
2527         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2528 }
2529
2530 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2531                                 enum switchdev_trans trans, int flags,
2532                                 u32 in_pport, __be16 vlan_id,
2533                                 __be16 vlan_id_mask,
2534                                 enum rocker_of_dpa_table_id goto_tbl,
2535                                 bool untagged, __be16 new_vlan_id)
2536 {
2537         struct rocker_flow_tbl_entry *entry;
2538
2539         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2540         if (!entry)
2541                 return -ENOMEM;
2542
2543         entry->key.priority = ROCKER_PRIORITY_VLAN;
2544         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2545         entry->key.vlan.in_pport = in_pport;
2546         entry->key.vlan.vlan_id = vlan_id;
2547         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2548         entry->key.vlan.goto_tbl = goto_tbl;
2549
2550         entry->key.vlan.untagged = untagged;
2551         entry->key.vlan.new_vlan_id = new_vlan_id;
2552
2553         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2554 }
2555
2556 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2557                                     enum switchdev_trans trans,
2558                                     u32 in_pport, u32 in_pport_mask,
2559                                     __be16 eth_type, const u8 *eth_dst,
2560                                     const u8 *eth_dst_mask, __be16 vlan_id,
2561                                     __be16 vlan_id_mask, bool copy_to_cpu,
2562                                     int flags)
2563 {
2564         struct rocker_flow_tbl_entry *entry;
2565
2566         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2567         if (!entry)
2568                 return -ENOMEM;
2569
2570         if (is_multicast_ether_addr(eth_dst)) {
2571                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2572                 entry->key.term_mac.goto_tbl =
2573                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2574         } else {
2575                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2576                 entry->key.term_mac.goto_tbl =
2577                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2578         }
2579
2580         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2581         entry->key.term_mac.in_pport = in_pport;
2582         entry->key.term_mac.in_pport_mask = in_pport_mask;
2583         entry->key.term_mac.eth_type = eth_type;
2584         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2585         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2586         entry->key.term_mac.vlan_id = vlan_id;
2587         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2588         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2589
2590         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2591 }
2592
2593 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2594                                   enum switchdev_trans trans, int flags,
2595                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2596                                   __be16 vlan_id, u32 tunnel_id,
2597                                   enum rocker_of_dpa_table_id goto_tbl,
2598                                   u32 group_id, bool copy_to_cpu)
2599 {
2600         struct rocker_flow_tbl_entry *entry;
2601         u32 priority;
2602         bool vlan_bridging = !!vlan_id;
2603         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2604         bool wild = false;
2605
2606         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2607         if (!entry)
2608                 return -ENOMEM;
2609
2610         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2611
2612         if (eth_dst) {
2613                 entry->key.bridge.has_eth_dst = 1;
2614                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2615         }
2616         if (eth_dst_mask) {
2617                 entry->key.bridge.has_eth_dst_mask = 1;
2618                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2619                 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2620                         wild = true;
2621         }
2622
2623         priority = ROCKER_PRIORITY_UNKNOWN;
2624         if (vlan_bridging && dflt && wild)
2625                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2626         else if (vlan_bridging && dflt && !wild)
2627                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2628         else if (vlan_bridging && !dflt)
2629                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2630         else if (!vlan_bridging && dflt && wild)
2631                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2632         else if (!vlan_bridging && dflt && !wild)
2633                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2634         else if (!vlan_bridging && !dflt)
2635                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2636
2637         entry->key.priority = priority;
2638         entry->key.bridge.vlan_id = vlan_id;
2639         entry->key.bridge.tunnel_id = tunnel_id;
2640         entry->key.bridge.goto_tbl = goto_tbl;
2641         entry->key.bridge.group_id = group_id;
2642         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2643
2644         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2645 }
2646
2647 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2648                                           enum switchdev_trans trans,
2649                                           __be16 eth_type, __be32 dst,
2650                                           __be32 dst_mask, u32 priority,
2651                                           enum rocker_of_dpa_table_id goto_tbl,
2652                                           u32 group_id, int flags)
2653 {
2654         struct rocker_flow_tbl_entry *entry;
2655
2656         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2657         if (!entry)
2658                 return -ENOMEM;
2659
2660         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2661         entry->key.priority = priority;
2662         entry->key.ucast_routing.eth_type = eth_type;
2663         entry->key.ucast_routing.dst4 = dst;
2664         entry->key.ucast_routing.dst4_mask = dst_mask;
2665         entry->key.ucast_routing.goto_tbl = goto_tbl;
2666         entry->key.ucast_routing.group_id = group_id;
2667         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2668                                   ucast_routing.group_id);
2669
2670         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2671 }
2672
2673 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2674                                enum switchdev_trans trans, int flags,
2675                                u32 in_pport, u32 in_pport_mask,
2676                                const u8 *eth_src, const u8 *eth_src_mask,
2677                                const u8 *eth_dst, const u8 *eth_dst_mask,
2678                                __be16 eth_type, __be16 vlan_id,
2679                                __be16 vlan_id_mask, u8 ip_proto,
2680                                u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2681                                u32 group_id)
2682 {
2683         u32 priority;
2684         struct rocker_flow_tbl_entry *entry;
2685
2686         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2687         if (!entry)
2688                 return -ENOMEM;
2689
2690         priority = ROCKER_PRIORITY_ACL_NORMAL;
2691         if (eth_dst && eth_dst_mask) {
2692                 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2693                         priority = ROCKER_PRIORITY_ACL_DFLT;
2694                 else if (is_link_local_ether_addr(eth_dst))
2695                         priority = ROCKER_PRIORITY_ACL_CTRL;
2696         }
2697
2698         entry->key.priority = priority;
2699         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2700         entry->key.acl.in_pport = in_pport;
2701         entry->key.acl.in_pport_mask = in_pport_mask;
2702
2703         if (eth_src)
2704                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2705         if (eth_src_mask)
2706                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2707         if (eth_dst)
2708                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2709         if (eth_dst_mask)
2710                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2711
2712         entry->key.acl.eth_type = eth_type;
2713         entry->key.acl.vlan_id = vlan_id;
2714         entry->key.acl.vlan_id_mask = vlan_id_mask;
2715         entry->key.acl.ip_proto = ip_proto;
2716         entry->key.acl.ip_proto_mask = ip_proto_mask;
2717         entry->key.acl.ip_tos = ip_tos;
2718         entry->key.acl.ip_tos_mask = ip_tos_mask;
2719         entry->key.acl.group_id = group_id;
2720
2721         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2722 }
2723
2724 static struct rocker_group_tbl_entry *
2725 rocker_group_tbl_find(const struct rocker *rocker,
2726                       const struct rocker_group_tbl_entry *match)
2727 {
2728         struct rocker_group_tbl_entry *found;
2729
2730         hash_for_each_possible(rocker->group_tbl, found,
2731                                entry, match->group_id) {
2732                 if (found->group_id == match->group_id)
2733                         return found;
2734         }
2735
2736         return NULL;
2737 }
2738
2739 static void rocker_group_tbl_entry_free(enum switchdev_trans trans,
2740                                         struct rocker_group_tbl_entry *entry)
2741 {
2742         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2743         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2744         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2745                 rocker_port_kfree(trans, entry->group_ids);
2746                 break;
2747         default:
2748                 break;
2749         }
2750         rocker_port_kfree(trans, entry);
2751 }
2752
2753 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2754                                 enum switchdev_trans trans, int flags,
2755                                 struct rocker_group_tbl_entry *match)
2756 {
2757         struct rocker *rocker = rocker_port->rocker;
2758         struct rocker_group_tbl_entry *found;
2759         unsigned long lock_flags;
2760
2761         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2762
2763         found = rocker_group_tbl_find(rocker, match);
2764
2765         if (found) {
2766                 if (trans != SWITCHDEV_TRANS_PREPARE)
2767                         hash_del(&found->entry);
2768                 rocker_group_tbl_entry_free(trans, found);
2769                 found = match;
2770                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2771         } else {
2772                 found = match;
2773                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2774         }
2775
2776         if (trans != SWITCHDEV_TRANS_PREPARE)
2777                 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2778
2779         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2780
2781         return rocker_cmd_exec(rocker_port, trans, flags,
2782                                rocker_cmd_group_tbl_add, found, NULL, NULL);
2783 }
2784
2785 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2786                                 enum switchdev_trans trans, int flags,
2787                                 struct rocker_group_tbl_entry *match)
2788 {
2789         struct rocker *rocker = rocker_port->rocker;
2790         struct rocker_group_tbl_entry *found;
2791         unsigned long lock_flags;
2792         int err = 0;
2793
2794         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2795
2796         found = rocker_group_tbl_find(rocker, match);
2797
2798         if (found) {
2799                 if (trans != SWITCHDEV_TRANS_PREPARE)
2800                         hash_del(&found->entry);
2801                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2802         }
2803
2804         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2805
2806         rocker_group_tbl_entry_free(trans, match);
2807
2808         if (found) {
2809                 err = rocker_cmd_exec(rocker_port, trans, flags,
2810                                       rocker_cmd_group_tbl_del,
2811                                       found, NULL, NULL);
2812                 rocker_group_tbl_entry_free(trans, found);
2813         }
2814
2815         return err;
2816 }
2817
2818 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2819                                enum switchdev_trans trans, int flags,
2820                                struct rocker_group_tbl_entry *entry)
2821 {
2822         if (flags & ROCKER_OP_FLAG_REMOVE)
2823                 return rocker_group_tbl_del(rocker_port, trans, flags, entry);
2824         else
2825                 return rocker_group_tbl_add(rocker_port, trans, flags, entry);
2826 }
2827
2828 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2829                                      enum switchdev_trans trans, int flags,
2830                                      __be16 vlan_id, u32 out_pport,
2831                                      int pop_vlan)
2832 {
2833         struct rocker_group_tbl_entry *entry;
2834
2835         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2836         if (!entry)
2837                 return -ENOMEM;
2838
2839         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2840         entry->l2_interface.pop_vlan = pop_vlan;
2841
2842         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2843 }
2844
2845 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2846                                    enum switchdev_trans trans,
2847                                    int flags, u8 group_count,
2848                                    const u32 *group_ids, u32 group_id)
2849 {
2850         struct rocker_group_tbl_entry *entry;
2851
2852         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2853         if (!entry)
2854                 return -ENOMEM;
2855
2856         entry->group_id = group_id;
2857         entry->group_count = group_count;
2858
2859         entry->group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
2860                                                group_count, sizeof(u32));
2861         if (!entry->group_ids) {
2862                 rocker_port_kfree(trans, entry);
2863                 return -ENOMEM;
2864         }
2865         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2866
2867         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2868 }
2869
2870 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2871                                  enum switchdev_trans trans, int flags,
2872                                  __be16 vlan_id, u8 group_count,
2873                                  const u32 *group_ids, u32 group_id)
2874 {
2875         return rocker_group_l2_fan_out(rocker_port, trans, flags,
2876                                        group_count, group_ids,
2877                                        group_id);
2878 }
2879
2880 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2881                                    enum switchdev_trans trans, int flags,
2882                                    u32 index, const u8 *src_mac, const u8 *dst_mac,
2883                                    __be16 vlan_id, bool ttl_check, u32 pport)
2884 {
2885         struct rocker_group_tbl_entry *entry;
2886
2887         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2888         if (!entry)
2889                 return -ENOMEM;
2890
2891         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2892         if (src_mac)
2893                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2894         if (dst_mac)
2895                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2896         entry->l3_unicast.vlan_id = vlan_id;
2897         entry->l3_unicast.ttl_check = ttl_check;
2898         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2899
2900         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2901 }
2902
2903 static struct rocker_neigh_tbl_entry *
2904 rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
2905 {
2906         struct rocker_neigh_tbl_entry *found;
2907
2908         hash_for_each_possible(rocker->neigh_tbl, found,
2909                                entry, be32_to_cpu(ip_addr))
2910                 if (found->ip_addr == ip_addr)
2911                         return found;
2912
2913         return NULL;
2914 }
2915
2916 static void _rocker_neigh_add(struct rocker *rocker,
2917                               enum switchdev_trans trans,
2918                               struct rocker_neigh_tbl_entry *entry)
2919 {
2920         if (trans != SWITCHDEV_TRANS_COMMIT)
2921                 entry->index = rocker->neigh_tbl_next_index++;
2922         if (trans == SWITCHDEV_TRANS_PREPARE)
2923                 return;
2924         entry->ref_count++;
2925         hash_add(rocker->neigh_tbl, &entry->entry,
2926                  be32_to_cpu(entry->ip_addr));
2927 }
2928
2929 static void _rocker_neigh_del(enum switchdev_trans trans,
2930                               struct rocker_neigh_tbl_entry *entry)
2931 {
2932         if (trans == SWITCHDEV_TRANS_PREPARE)
2933                 return;
2934         if (--entry->ref_count == 0) {
2935                 hash_del(&entry->entry);
2936                 rocker_port_kfree(trans, entry);
2937         }
2938 }
2939
2940 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
2941                                  enum switchdev_trans trans,
2942                                  const u8 *eth_dst, bool ttl_check)
2943 {
2944         if (eth_dst) {
2945                 ether_addr_copy(entry->eth_dst, eth_dst);
2946                 entry->ttl_check = ttl_check;
2947         } else if (trans != SWITCHDEV_TRANS_PREPARE) {
2948                 entry->ref_count++;
2949         }
2950 }
2951
2952 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2953                                   enum switchdev_trans trans,
2954                                   int flags, __be32 ip_addr, const u8 *eth_dst)
2955 {
2956         struct rocker *rocker = rocker_port->rocker;
2957         struct rocker_neigh_tbl_entry *entry;
2958         struct rocker_neigh_tbl_entry *found;
2959         unsigned long lock_flags;
2960         __be16 eth_type = htons(ETH_P_IP);
2961         enum rocker_of_dpa_table_id goto_tbl =
2962                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2963         u32 group_id;
2964         u32 priority = 0;
2965         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2966         bool updating;
2967         bool removing;
2968         int err = 0;
2969
2970         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2971         if (!entry)
2972                 return -ENOMEM;
2973
2974         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2975
2976         found = rocker_neigh_tbl_find(rocker, ip_addr);
2977
2978         updating = found && adding;
2979         removing = found && !adding;
2980         adding = !found && adding;
2981
2982         if (adding) {
2983                 entry->ip_addr = ip_addr;
2984                 entry->dev = rocker_port->dev;
2985                 ether_addr_copy(entry->eth_dst, eth_dst);
2986                 entry->ttl_check = true;
2987                 _rocker_neigh_add(rocker, trans, entry);
2988         } else if (removing) {
2989                 memcpy(entry, found, sizeof(*entry));
2990                 _rocker_neigh_del(trans, found);
2991         } else if (updating) {
2992                 _rocker_neigh_update(found, trans, eth_dst, true);
2993                 memcpy(entry, found, sizeof(*entry));
2994         } else {
2995                 err = -ENOENT;
2996         }
2997
2998         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2999
3000         if (err)
3001                 goto err_out;
3002
3003         /* For each active neighbor, we have an L3 unicast group and
3004          * a /32 route to the neighbor, which uses the L3 unicast
3005          * group.  The L3 unicast group can also be referred to by
3006          * other routes' nexthops.
3007          */
3008
3009         err = rocker_group_l3_unicast(rocker_port, trans, flags,
3010                                       entry->index,
3011                                       rocker_port->dev->dev_addr,
3012                                       entry->eth_dst,
3013                                       rocker_port->internal_vlan_id,
3014                                       entry->ttl_check,
3015                                       rocker_port->pport);
3016         if (err) {
3017                 netdev_err(rocker_port->dev,
3018                            "Error (%d) L3 unicast group index %d\n",
3019                            err, entry->index);
3020                 goto err_out;
3021         }
3022
3023         if (adding || removing) {
3024                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3025                 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3026                                                      eth_type, ip_addr,
3027                                                      inet_make_mask(32),
3028                                                      priority, goto_tbl,
3029                                                      group_id, flags);
3030
3031                 if (err)
3032                         netdev_err(rocker_port->dev,
3033                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3034                                    err, &entry->ip_addr, group_id);
3035         }
3036
3037 err_out:
3038         if (!adding)
3039                 rocker_port_kfree(trans, entry);
3040
3041         return err;
3042 }
3043
3044 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3045                                     enum switchdev_trans trans, __be32 ip_addr)
3046 {
3047         struct net_device *dev = rocker_port->dev;
3048         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3049         int err = 0;
3050
3051         if (!n) {
3052                 n = neigh_create(&arp_tbl, &ip_addr, dev);
3053                 if (IS_ERR(n))
3054                         return IS_ERR(n);
3055         }
3056
3057         /* If the neigh is already resolved, then go ahead and
3058          * install the entry, otherwise start the ARP process to
3059          * resolve the neigh.
3060          */
3061
3062         if (n->nud_state & NUD_VALID)
3063                 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3064                                              ip_addr, n->ha);
3065         else
3066                 neigh_event_send(n, NULL);
3067
3068         neigh_release(n);
3069         return err;
3070 }
3071
3072 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3073                                enum switchdev_trans trans, int flags,
3074                                __be32 ip_addr, u32 *index)
3075 {
3076         struct rocker *rocker = rocker_port->rocker;
3077         struct rocker_neigh_tbl_entry *entry;
3078         struct rocker_neigh_tbl_entry *found;
3079         unsigned long lock_flags;
3080         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3081         bool updating;
3082         bool removing;
3083         bool resolved = true;
3084         int err = 0;
3085
3086         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
3087         if (!entry)
3088                 return -ENOMEM;
3089
3090         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3091
3092         found = rocker_neigh_tbl_find(rocker, ip_addr);
3093         if (found)
3094                 *index = found->index;
3095
3096         updating = found && adding;
3097         removing = found && !adding;
3098         adding = !found && adding;
3099
3100         if (adding) {
3101                 entry->ip_addr = ip_addr;
3102                 entry->dev = rocker_port->dev;
3103                 _rocker_neigh_add(rocker, trans, entry);
3104                 *index = entry->index;
3105                 resolved = false;
3106         } else if (removing) {
3107                 _rocker_neigh_del(trans, found);
3108         } else if (updating) {
3109                 _rocker_neigh_update(found, trans, NULL, false);
3110                 resolved = !is_zero_ether_addr(found->eth_dst);
3111         } else {
3112                 err = -ENOENT;
3113         }
3114
3115         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3116
3117         if (!adding)
3118                 rocker_port_kfree(trans, entry);
3119
3120         if (err)
3121                 return err;
3122
3123         /* Resolved means neigh ip_addr is resolved to neigh mac. */
3124
3125         if (!resolved)
3126                 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3127
3128         return err;
3129 }
3130
3131 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3132                                         enum switchdev_trans trans,
3133                                         int flags, __be16 vlan_id)
3134 {
3135         struct rocker_port *p;
3136         const struct rocker *rocker = rocker_port->rocker;
3137         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3138         u32 *group_ids;
3139         u8 group_count = 0;
3140         int err = 0;
3141         int i;
3142
3143         group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
3144                                         rocker->port_count, sizeof(u32));
3145         if (!group_ids)
3146                 return -ENOMEM;
3147
3148         /* Adjust the flood group for this VLAN.  The flood group
3149          * references an L2 interface group for each port in this
3150          * VLAN.
3151          */
3152
3153         for (i = 0; i < rocker->port_count; i++) {
3154                 p = rocker->ports[i];
3155                 if (!p)
3156                         continue;
3157                 if (!rocker_port_is_bridged(p))
3158                         continue;
3159                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3160                         group_ids[group_count++] =
3161                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3162                 }
3163         }
3164
3165         /* If there are no bridged ports in this VLAN, we're done */
3166         if (group_count == 0)
3167                 goto no_ports_in_vlan;
3168
3169         err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3170                                     group_count, group_ids, group_id);
3171         if (err)
3172                 netdev_err(rocker_port->dev,
3173                            "Error (%d) port VLAN l2 flood group\n", err);
3174
3175 no_ports_in_vlan:
3176         rocker_port_kfree(trans, group_ids);
3177         return err;
3178 }
3179
3180 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3181                                       enum switchdev_trans trans, int flags,
3182                                       __be16 vlan_id, bool pop_vlan)
3183 {
3184         const struct rocker *rocker = rocker_port->rocker;
3185         struct rocker_port *p;
3186         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3187         u32 out_pport;
3188         int ref = 0;
3189         int err;
3190         int i;
3191
3192         /* An L2 interface group for this port in this VLAN, but
3193          * only when port STP state is LEARNING|FORWARDING.
3194          */
3195
3196         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3197             rocker_port->stp_state == BR_STATE_FORWARDING) {
3198                 out_pport = rocker_port->pport;
3199                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3200                                                 vlan_id, out_pport, pop_vlan);
3201                 if (err) {
3202                         netdev_err(rocker_port->dev,
3203                                    "Error (%d) port VLAN l2 group for pport %d\n",
3204                                    err, out_pport);
3205                         return err;
3206                 }
3207         }
3208
3209         /* An L2 interface group for this VLAN to CPU port.
3210          * Add when first port joins this VLAN and destroy when
3211          * last port leaves this VLAN.
3212          */
3213
3214         for (i = 0; i < rocker->port_count; i++) {
3215                 p = rocker->ports[i];
3216                 if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
3217                         ref++;
3218         }
3219
3220         if ((!adding || ref != 1) && (adding || ref != 0))
3221                 return 0;
3222
3223         out_pport = 0;
3224         err = rocker_group_l2_interface(rocker_port, trans, flags,
3225                                         vlan_id, out_pport, pop_vlan);
3226         if (err) {
3227                 netdev_err(rocker_port->dev,
3228                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3229                 return err;
3230         }
3231
3232         return 0;
3233 }
3234
3235 static struct rocker_ctrl {
3236         const u8 *eth_dst;
3237         const u8 *eth_dst_mask;
3238         __be16 eth_type;
3239         bool acl;
3240         bool bridge;
3241         bool term;
3242         bool copy_to_cpu;
3243 } rocker_ctrls[] = {
3244         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3245                 /* pass link local multicast pkts up to CPU for filtering */
3246                 .eth_dst = ll_mac,
3247                 .eth_dst_mask = ll_mask,
3248                 .acl = true,
3249         },
3250         [ROCKER_CTRL_LOCAL_ARP] = {
3251                 /* pass local ARP pkts up to CPU */
3252                 .eth_dst = zero_mac,
3253                 .eth_dst_mask = zero_mac,
3254                 .eth_type = htons(ETH_P_ARP),
3255                 .acl = true,
3256         },
3257         [ROCKER_CTRL_IPV4_MCAST] = {
3258                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3259                 .eth_dst = ipv4_mcast,
3260                 .eth_dst_mask = ipv4_mask,
3261                 .eth_type = htons(ETH_P_IP),
3262                 .term  = true,
3263                 .copy_to_cpu = true,
3264         },
3265         [ROCKER_CTRL_IPV6_MCAST] = {
3266                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3267                 .eth_dst = ipv6_mcast,
3268                 .eth_dst_mask = ipv6_mask,
3269                 .eth_type = htons(ETH_P_IPV6),
3270                 .term  = true,
3271                 .copy_to_cpu = true,
3272         },
3273         [ROCKER_CTRL_DFLT_BRIDGING] = {
3274                 /* flood any pkts on vlan */
3275                 .bridge = true,
3276                 .copy_to_cpu = true,
3277         },
3278 };
3279
3280 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3281                                      enum switchdev_trans trans, int flags,
3282                                      const struct rocker_ctrl *ctrl, __be16 vlan_id)
3283 {
3284         u32 in_pport = rocker_port->pport;
3285         u32 in_pport_mask = 0xffffffff;
3286         u32 out_pport = 0;
3287         const u8 *eth_src = NULL;
3288         const u8 *eth_src_mask = NULL;
3289         __be16 vlan_id_mask = htons(0xffff);
3290         u8 ip_proto = 0;
3291         u8 ip_proto_mask = 0;
3292         u8 ip_tos = 0;
3293         u8 ip_tos_mask = 0;
3294         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3295         int err;
3296
3297         err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3298                                   in_pport, in_pport_mask,
3299                                   eth_src, eth_src_mask,
3300                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3301                                   ctrl->eth_type,
3302                                   vlan_id, vlan_id_mask,
3303                                   ip_proto, ip_proto_mask,
3304                                   ip_tos, ip_tos_mask,
3305                                   group_id);
3306
3307         if (err)
3308                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3309
3310         return err;
3311 }
3312
3313 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3314                                         enum switchdev_trans trans, int flags,
3315                                         const struct rocker_ctrl *ctrl,
3316                                         __be16 vlan_id)
3317 {
3318         enum rocker_of_dpa_table_id goto_tbl =
3319                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3320         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3321         u32 tunnel_id = 0;
3322         int err;
3323
3324         if (!rocker_port_is_bridged(rocker_port))
3325                 return 0;
3326
3327         err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3328                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3329                                      vlan_id, tunnel_id,
3330                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3331
3332         if (err)
3333                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3334
3335         return err;
3336 }
3337
3338 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3339                                       enum switchdev_trans trans, int flags,
3340                                       const struct rocker_ctrl *ctrl, __be16 vlan_id)
3341 {
3342         u32 in_pport_mask = 0xffffffff;
3343         __be16 vlan_id_mask = htons(0xffff);
3344         int err;
3345
3346         if (ntohs(vlan_id) == 0)
3347                 vlan_id = rocker_port->internal_vlan_id;
3348
3349         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3350                                        rocker_port->pport, in_pport_mask,
3351                                        ctrl->eth_type, ctrl->eth_dst,
3352                                        ctrl->eth_dst_mask, vlan_id,
3353                                        vlan_id_mask, ctrl->copy_to_cpu,
3354                                        flags);
3355
3356         if (err)
3357                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3358
3359         return err;
3360 }
3361
3362 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3363                                  enum switchdev_trans trans, int flags,
3364                                  const struct rocker_ctrl *ctrl, __be16 vlan_id)
3365 {
3366         if (ctrl->acl)
3367                 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3368                                                  ctrl, vlan_id);
3369         if (ctrl->bridge)
3370                 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3371                                                     ctrl, vlan_id);
3372
3373         if (ctrl->term)
3374                 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3375                                                   ctrl, vlan_id);
3376
3377         return -EOPNOTSUPP;
3378 }
3379
3380 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3381                                      enum switchdev_trans trans, int flags,
3382                                      __be16 vlan_id)
3383 {
3384         int err = 0;
3385         int i;
3386
3387         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3388                 if (rocker_port->ctrls[i]) {
3389                         err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3390                                                     &rocker_ctrls[i], vlan_id);
3391                         if (err)
3392                                 return err;
3393                 }
3394         }
3395
3396         return err;
3397 }
3398
3399 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3400                             enum switchdev_trans trans, int flags,
3401                             const struct rocker_ctrl *ctrl)
3402 {
3403         u16 vid;
3404         int err = 0;
3405
3406         for (vid = 1; vid < VLAN_N_VID; vid++) {
3407                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3408                         continue;
3409                 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3410                                             ctrl, htons(vid));
3411                 if (err)
3412                         break;
3413         }
3414
3415         return err;
3416 }
3417
3418 static int rocker_port_vlan(struct rocker_port *rocker_port,
3419                             enum switchdev_trans trans, int flags, u16 vid)
3420 {
3421         enum rocker_of_dpa_table_id goto_tbl =
3422                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3423         u32 in_pport = rocker_port->pport;
3424         __be16 vlan_id = htons(vid);
3425         __be16 vlan_id_mask = htons(0xffff);
3426         __be16 internal_vlan_id;
3427         bool untagged;
3428         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3429         int err;
3430
3431         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3432
3433         if (adding && test_bit(ntohs(internal_vlan_id),
3434                                rocker_port->vlan_bitmap))
3435                         return 0; /* already added */
3436         else if (!adding && !test_bit(ntohs(internal_vlan_id),
3437                                       rocker_port->vlan_bitmap))
3438                         return 0; /* already removed */
3439
3440         change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3441
3442         if (adding) {
3443                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3444                                                 internal_vlan_id);
3445                 if (err) {
3446                         netdev_err(rocker_port->dev,
3447                                    "Error (%d) port ctrl vlan add\n", err);
3448                         goto err_out;
3449                 }
3450         }
3451
3452         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3453                                          internal_vlan_id, untagged);
3454         if (err) {
3455                 netdev_err(rocker_port->dev,
3456                            "Error (%d) port VLAN l2 groups\n", err);
3457                 goto err_out;
3458         }
3459
3460         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3461                                            internal_vlan_id);
3462         if (err) {
3463                 netdev_err(rocker_port->dev,
3464                            "Error (%d) port VLAN l2 flood group\n", err);
3465                 goto err_out;
3466         }
3467
3468         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3469                                    in_pport, vlan_id, vlan_id_mask,
3470                                    goto_tbl, untagged, internal_vlan_id);
3471         if (err)
3472                 netdev_err(rocker_port->dev,
3473                            "Error (%d) port VLAN table\n", err);
3474
3475 err_out:
3476         if (trans == SWITCHDEV_TRANS_PREPARE)
3477                 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3478
3479         return err;
3480 }
3481
3482 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3483                               enum switchdev_trans trans, int flags)
3484 {
3485         enum rocker_of_dpa_table_id goto_tbl;
3486         u32 in_pport;
3487         u32 in_pport_mask;
3488         int err;
3489
3490         /* Normal Ethernet Frames.  Matches pkts from any local physical
3491          * ports.  Goto VLAN tbl.
3492          */
3493
3494         in_pport = 0;
3495         in_pport_mask = 0xffff0000;
3496         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3497
3498         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3499                                       in_pport, in_pport_mask,
3500                                       goto_tbl);
3501         if (err)
3502                 netdev_err(rocker_port->dev,
3503                            "Error (%d) ingress port table entry\n", err);
3504
3505         return err;
3506 }
3507
3508 struct rocker_fdb_learn_work {
3509         struct work_struct work;
3510         struct rocker_port *rocker_port;
3511         enum switchdev_trans trans;
3512         int flags;
3513         u8 addr[ETH_ALEN];
3514         u16 vid;
3515 };
3516
3517 static void rocker_port_fdb_learn_work(struct work_struct *work)
3518 {
3519         const struct rocker_fdb_learn_work *lw =
3520                 container_of(work, struct rocker_fdb_learn_work, work);
3521         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3522         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3523         struct switchdev_notifier_fdb_info info;
3524
3525         info.addr = lw->addr;
3526         info.vid = lw->vid;
3527
3528         if (learned && removing)
3529                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3530                                          lw->rocker_port->dev, &info.info);
3531         else if (learned && !removing)
3532                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3533                                          lw->rocker_port->dev, &info.info);
3534
3535         rocker_port_kfree(lw->trans, work);
3536 }
3537
3538 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3539                                  enum switchdev_trans trans, int flags,
3540                                  const u8 *addr, __be16 vlan_id)
3541 {
3542         struct rocker_fdb_learn_work *lw;
3543         enum rocker_of_dpa_table_id goto_tbl =
3544                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3545         u32 out_pport = rocker_port->pport;
3546         u32 tunnel_id = 0;
3547         u32 group_id = ROCKER_GROUP_NONE;
3548         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3549         bool copy_to_cpu = false;
3550         int err;
3551
3552         if (rocker_port_is_bridged(rocker_port))
3553                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3554
3555         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3556                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3557                                              NULL, vlan_id, tunnel_id, goto_tbl,
3558                                              group_id, copy_to_cpu);
3559                 if (err)
3560                         return err;
3561         }
3562
3563         if (!syncing)
3564                 return 0;
3565
3566         if (!rocker_port_is_bridged(rocker_port))
3567                 return 0;
3568
3569         lw = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*lw));
3570         if (!lw)
3571                 return -ENOMEM;
3572
3573         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3574
3575         lw->rocker_port = rocker_port;
3576         lw->trans = trans;
3577         lw->flags = flags;
3578         ether_addr_copy(lw->addr, addr);
3579         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3580
3581         if (trans == SWITCHDEV_TRANS_PREPARE)
3582                 rocker_port_kfree(trans, lw);
3583         else
3584                 schedule_work(&lw->work);
3585
3586         return 0;
3587 }
3588
3589 static struct rocker_fdb_tbl_entry *
3590 rocker_fdb_tbl_find(const struct rocker *rocker,
3591                     const struct rocker_fdb_tbl_entry *match)
3592 {
3593         struct rocker_fdb_tbl_entry *found;
3594
3595         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3596                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3597                         return found;
3598
3599         return NULL;
3600 }
3601
3602 static int rocker_port_fdb(struct rocker_port *rocker_port,
3603                            enum switchdev_trans trans,
3604                            const unsigned char *addr,
3605                            __be16 vlan_id, int flags)
3606 {
3607         struct rocker *rocker = rocker_port->rocker;
3608         struct rocker_fdb_tbl_entry *fdb;
3609         struct rocker_fdb_tbl_entry *found;
3610         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3611         unsigned long lock_flags;
3612
3613         fdb = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*fdb));
3614         if (!fdb)
3615                 return -ENOMEM;
3616
3617         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3618         fdb->key.pport = rocker_port->pport;
3619         ether_addr_copy(fdb->key.addr, addr);
3620         fdb->key.vlan_id = vlan_id;
3621         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3622
3623         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3624
3625         found = rocker_fdb_tbl_find(rocker, fdb);
3626
3627         if (removing && found) {
3628                 rocker_port_kfree(trans, fdb);
3629                 if (trans != SWITCHDEV_TRANS_PREPARE)
3630                         hash_del(&found->entry);
3631         } else if (!removing && !found) {
3632                 if (trans != SWITCHDEV_TRANS_PREPARE)
3633                         hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3634         }
3635
3636         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3637
3638         /* Check if adding and already exists, or removing and can't find */
3639         if (!found != !removing) {
3640                 rocker_port_kfree(trans, fdb);
3641                 if (!found && removing)
3642                         return 0;
3643                 /* Refreshing existing to update aging timers */
3644                 flags |= ROCKER_OP_FLAG_REFRESH;
3645         }
3646
3647         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3648 }
3649
3650 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3651                                  enum switchdev_trans trans, int flags)
3652 {
3653         struct rocker *rocker = rocker_port->rocker;
3654         struct rocker_fdb_tbl_entry *found;
3655         unsigned long lock_flags;
3656         struct hlist_node *tmp;
3657         int bkt;
3658         int err = 0;
3659
3660         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3661             rocker_port->stp_state == BR_STATE_FORWARDING)
3662                 return 0;
3663
3664         flags |= ROCKER_OP_FLAG_REMOVE;
3665
3666         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3667
3668         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3669                 if (found->key.pport != rocker_port->pport)
3670                         continue;
3671                 if (!found->learned)
3672                         continue;
3673                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3674                                             found->key.addr,
3675                                             found->key.vlan_id);
3676                 if (err)
3677                         goto err_out;
3678                 if (trans != SWITCHDEV_TRANS_PREPARE)
3679                         hash_del(&found->entry);
3680         }
3681
3682 err_out:
3683         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3684
3685         return err;
3686 }
3687
3688 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3689                                   enum switchdev_trans trans, int flags,
3690                                   __be16 vlan_id)
3691 {
3692         u32 in_pport_mask = 0xffffffff;
3693         __be16 eth_type;
3694         const u8 *dst_mac_mask = ff_mac;
3695         __be16 vlan_id_mask = htons(0xffff);
3696         bool copy_to_cpu = false;
3697         int err;
3698
3699         if (ntohs(vlan_id) == 0)
3700                 vlan_id = rocker_port->internal_vlan_id;
3701
3702         eth_type = htons(ETH_P_IP);
3703         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3704                                        rocker_port->pport, in_pport_mask,
3705                                        eth_type, rocker_port->dev->dev_addr,
3706                                        dst_mac_mask, vlan_id, vlan_id_mask,
3707                                        copy_to_cpu, flags);
3708         if (err)
3709                 return err;
3710
3711         eth_type = htons(ETH_P_IPV6);
3712         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3713                                        rocker_port->pport, in_pport_mask,
3714                                        eth_type, rocker_port->dev->dev_addr,
3715                                        dst_mac_mask, vlan_id, vlan_id_mask,
3716                                        copy_to_cpu, flags);
3717
3718         return err;
3719 }
3720
3721 static int rocker_port_fwding(struct rocker_port *rocker_port,
3722                               enum switchdev_trans trans, int flags)
3723 {
3724         bool pop_vlan;
3725         u32 out_pport;
3726         __be16 vlan_id;
3727         u16 vid;
3728         int err;
3729
3730         /* Port will be forwarding-enabled if its STP state is LEARNING
3731          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3732          * port STP state.  Use L2 interface group on port VLANs as a way
3733          * to toggle port forwarding: if forwarding is disabled, L2
3734          * interface group will not exist.
3735          */
3736
3737         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3738             rocker_port->stp_state != BR_STATE_FORWARDING)
3739                 flags |= ROCKER_OP_FLAG_REMOVE;
3740
3741         out_pport = rocker_port->pport;
3742         for (vid = 1; vid < VLAN_N_VID; vid++) {
3743                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3744                         continue;
3745                 vlan_id = htons(vid);
3746                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3747                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3748                                                 vlan_id, out_pport, pop_vlan);
3749                 if (err) {
3750                         netdev_err(rocker_port->dev,
3751                                    "Error (%d) port VLAN l2 group for pport %d\n",
3752                                    err, out_pport);
3753                         return err;
3754                 }
3755         }
3756
3757         return 0;
3758 }
3759
3760 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3761                                   enum switchdev_trans trans, int flags,
3762                                   u8 state)
3763 {
3764         bool want[ROCKER_CTRL_MAX] = { 0, };
3765         bool prev_ctrls[ROCKER_CTRL_MAX];
3766         u8 prev_state;
3767         int err;
3768         int i;
3769
3770         if (trans == SWITCHDEV_TRANS_PREPARE) {
3771                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3772                 prev_state = rocker_port->stp_state;
3773         }
3774
3775         if (rocker_port->stp_state == state)
3776                 return 0;
3777
3778         rocker_port->stp_state = state;
3779
3780         switch (state) {
3781         case BR_STATE_DISABLED:
3782                 /* port is completely disabled */
3783                 break;
3784         case BR_STATE_LISTENING:
3785         case BR_STATE_BLOCKING:
3786                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3787                 break;
3788         case BR_STATE_LEARNING:
3789         case BR_STATE_FORWARDING:
3790                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3791                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3792                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3793                 if (rocker_port_is_bridged(rocker_port))
3794                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3795                 else
3796                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3797                 break;
3798         }
3799
3800         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3801                 if (want[i] != rocker_port->ctrls[i]) {
3802                         int ctrl_flags = flags |
3803                                          (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3804                         err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
3805                                                &rocker_ctrls[i]);
3806                         if (err)
3807                                 goto err_out;
3808                         rocker_port->ctrls[i] = want[i];
3809                 }
3810         }
3811
3812         err = rocker_port_fdb_flush(rocker_port, trans, flags);
3813         if (err)
3814                 goto err_out;
3815
3816         err = rocker_port_fwding(rocker_port, trans, flags);
3817
3818 err_out:
3819         if (trans == SWITCHDEV_TRANS_PREPARE) {
3820                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3821                 rocker_port->stp_state = prev_state;
3822         }
3823
3824         return err;
3825 }
3826
3827 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3828                                   enum switchdev_trans trans, int flags)
3829 {
3830         if (rocker_port_is_bridged(rocker_port))
3831                 /* bridge STP will enable port */
3832                 return 0;
3833
3834         /* port is not bridged, so simulate going to FORWARDING state */
3835         return rocker_port_stp_update(rocker_port, trans, flags,
3836                                       BR_STATE_FORWARDING);
3837 }
3838
3839 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3840                                    enum switchdev_trans trans, int flags)
3841 {
3842         if (rocker_port_is_bridged(rocker_port))
3843                 /* bridge STP will disable port */
3844                 return 0;
3845
3846         /* port is not bridged, so simulate going to DISABLED state */
3847         return rocker_port_stp_update(rocker_port, trans, flags,
3848                                       BR_STATE_DISABLED);
3849 }
3850
3851 static struct rocker_internal_vlan_tbl_entry *
3852 rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
3853 {
3854         struct rocker_internal_vlan_tbl_entry *found;
3855
3856         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3857                                entry, ifindex) {
3858                 if (found->ifindex == ifindex)
3859                         return found;
3860         }
3861
3862         return NULL;
3863 }
3864
3865 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3866                                                int ifindex)
3867 {
3868         struct rocker *rocker = rocker_port->rocker;
3869         struct rocker_internal_vlan_tbl_entry *entry;
3870         struct rocker_internal_vlan_tbl_entry *found;
3871         unsigned long lock_flags;
3872         int i;
3873
3874         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3875         if (!entry)
3876                 return 0;
3877
3878         entry->ifindex = ifindex;
3879
3880         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3881
3882         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3883         if (found) {
3884                 kfree(entry);
3885                 goto found;
3886         }
3887
3888         found = entry;
3889         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3890
3891         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3892                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3893                         continue;
3894                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3895                 goto found;
3896         }
3897
3898         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3899
3900 found:
3901         found->ref_count++;
3902         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3903
3904         return found->vlan_id;
3905 }
3906
3907 static void
3908 rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
3909                                  int ifindex)
3910 {
3911         struct rocker *rocker = rocker_port->rocker;
3912         struct rocker_internal_vlan_tbl_entry *found;
3913         unsigned long lock_flags;
3914         unsigned long bit;
3915
3916         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3917
3918         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3919         if (!found) {
3920                 netdev_err(rocker_port->dev,
3921                            "ifindex (%d) not found in internal VLAN tbl\n",
3922                            ifindex);
3923                 goto not_found;
3924         }
3925
3926         if (--found->ref_count <= 0) {
3927                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3928                 clear_bit(bit, rocker->internal_vlan_bitmap);
3929                 hash_del(&found->entry);
3930                 kfree(found);
3931         }
3932
3933 not_found:
3934         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3935 }
3936
3937 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3938                                 enum switchdev_trans trans, __be32 dst,
3939                                 int dst_len, const struct fib_info *fi,
3940                                 u32 tb_id, int flags)
3941 {
3942         const struct fib_nh *nh;
3943         __be16 eth_type = htons(ETH_P_IP);
3944         __be32 dst_mask = inet_make_mask(dst_len);
3945         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3946         u32 priority = fi->fib_priority;
3947         enum rocker_of_dpa_table_id goto_tbl =
3948                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3949         u32 group_id;
3950         bool nh_on_port;
3951         bool has_gw;
3952         u32 index;
3953         int err;
3954
3955         /* XXX support ECMP */
3956
3957         nh = fi->fib_nh;
3958         nh_on_port = (fi->fib_dev == rocker_port->dev);
3959         has_gw = !!nh->nh_gw;
3960
3961         if (has_gw && nh_on_port) {
3962                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
3963                                           nh->nh_gw, &index);
3964                 if (err)
3965                         return err;
3966
3967                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3968         } else {
3969                 /* Send to CPU for processing */
3970                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3971         }
3972
3973         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
3974                                              dst_mask, priority, goto_tbl,
3975                                              group_id, flags);
3976         if (err)
3977                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3978                            err, &dst);
3979
3980         return err;
3981 }
3982
3983 /*****************
3984  * Net device ops
3985  *****************/
3986
3987 static int rocker_port_open(struct net_device *dev)
3988 {
3989         struct rocker_port *rocker_port = netdev_priv(dev);
3990         int err;
3991
3992         err = rocker_port_dma_rings_init(rocker_port);
3993         if (err)
3994                 return err;
3995
3996         err = request_irq(rocker_msix_tx_vector(rocker_port),
3997                           rocker_tx_irq_handler, 0,
3998                           rocker_driver_name, rocker_port);
3999         if (err) {
4000                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
4001                 goto err_request_tx_irq;
4002         }
4003
4004         err = request_irq(rocker_msix_rx_vector(rocker_port),
4005                           rocker_rx_irq_handler, 0,
4006                           rocker_driver_name, rocker_port);
4007         if (err) {
4008                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
4009                 goto err_request_rx_irq;
4010         }
4011
4012         err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4013         if (err)
4014                 goto err_fwd_enable;
4015
4016         napi_enable(&rocker_port->napi_tx);
4017         napi_enable(&rocker_port->napi_rx);
4018         rocker_port_set_enable(rocker_port, true);
4019         netif_start_queue(dev);
4020         return 0;
4021
4022 err_fwd_enable:
4023         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4024 err_request_rx_irq:
4025         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4026 err_request_tx_irq:
4027         rocker_port_dma_rings_fini(rocker_port);
4028         return err;
4029 }
4030
4031 static int rocker_port_stop(struct net_device *dev)
4032 {
4033         struct rocker_port *rocker_port = netdev_priv(dev);
4034
4035         netif_stop_queue(dev);
4036         rocker_port_set_enable(rocker_port, false);
4037         napi_disable(&rocker_port->napi_rx);
4038         napi_disable(&rocker_port->napi_tx);
4039         rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE,
4040                                 ROCKER_OP_FLAG_NOWAIT);
4041         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4042         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4043         rocker_port_dma_rings_fini(rocker_port);
4044
4045         return 0;
4046 }
4047
4048 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
4049                                        const struct rocker_desc_info *desc_info)
4050 {
4051         const struct rocker *rocker = rocker_port->rocker;
4052         struct pci_dev *pdev = rocker->pdev;
4053         const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4054         struct rocker_tlv *attr;
4055         int rem;
4056
4057         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4058         if (!attrs[ROCKER_TLV_TX_FRAGS])
4059                 return;
4060         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4061                 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4062                 dma_addr_t dma_handle;
4063                 size_t len;
4064
4065                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4066                         continue;
4067                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4068                                         attr);
4069                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4070                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4071                         continue;
4072                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4073                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4074                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4075         }
4076 }
4077
4078 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
4079                                        struct rocker_desc_info *desc_info,
4080                                        char *buf, size_t buf_len)
4081 {
4082         const struct rocker *rocker = rocker_port->rocker;
4083         struct pci_dev *pdev = rocker->pdev;
4084         dma_addr_t dma_handle;
4085         struct rocker_tlv *frag;
4086
4087         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4088         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4089                 if (net_ratelimit())
4090                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4091                 return -EIO;
4092         }
4093         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4094         if (!frag)
4095                 goto unmap_frag;
4096         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4097                                dma_handle))
4098                 goto nest_cancel;
4099         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4100                                buf_len))
4101                 goto nest_cancel;
4102         rocker_tlv_nest_end(desc_info, frag);
4103         return 0;
4104
4105 nest_cancel:
4106         rocker_tlv_nest_cancel(desc_info, frag);
4107 unmap_frag:
4108         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4109         return -EMSGSIZE;
4110 }
4111
4112 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4113 {
4114         struct rocker_port *rocker_port = netdev_priv(dev);
4115         struct rocker *rocker = rocker_port->rocker;
4116         struct rocker_desc_info *desc_info;
4117         struct rocker_tlv *frags;
4118         int i;
4119         int err;
4120
4121         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4122         if (unlikely(!desc_info)) {
4123                 if (net_ratelimit())
4124                         netdev_err(dev, "tx ring full when queue awake\n");
4125                 return NETDEV_TX_BUSY;
4126         }
4127
4128         rocker_desc_cookie_ptr_set(desc_info, skb);
4129
4130         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4131         if (!frags)
4132                 goto out;
4133         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4134                                           skb->data, skb_headlen(skb));
4135         if (err)
4136                 goto nest_cancel;
4137         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
4138                 goto nest_cancel;
4139
4140         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4141                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4142
4143                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4144                                                   skb_frag_address(frag),
4145                                                   skb_frag_size(frag));
4146                 if (err)
4147                         goto unmap_frags;
4148         }
4149         rocker_tlv_nest_end(desc_info, frags);
4150
4151         rocker_desc_gen_clear(desc_info);
4152         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4153
4154         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4155         if (!desc_info)
4156                 netif_stop_queue(dev);
4157
4158         return NETDEV_TX_OK;
4159
4160 unmap_frags:
4161         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4162 nest_cancel:
4163         rocker_tlv_nest_cancel(desc_info, frags);
4164 out:
4165         dev_kfree_skb(skb);
4166         dev->stats.tx_dropped++;
4167
4168         return NETDEV_TX_OK;
4169 }
4170
4171 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4172 {
4173         struct sockaddr *addr = p;
4174         struct rocker_port *rocker_port = netdev_priv(dev);
4175         int err;
4176
4177         if (!is_valid_ether_addr(addr->sa_data))
4178                 return -EADDRNOTAVAIL;
4179
4180         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4181         if (err)
4182                 return err;
4183         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4184         return 0;
4185 }
4186
4187 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
4188 {
4189         struct rocker_port *rocker_port = netdev_priv(dev);
4190         int running = netif_running(dev);
4191         int err;
4192
4193 #define ROCKER_PORT_MIN_MTU     68
4194 #define ROCKER_PORT_MAX_MTU     9000
4195
4196         if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
4197                 return -EINVAL;
4198
4199         if (running)
4200                 rocker_port_stop(dev);
4201
4202         netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
4203         dev->mtu = new_mtu;
4204
4205         err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
4206         if (err)
4207                 return err;
4208
4209         if (running)
4210                 err = rocker_port_open(dev);
4211
4212         return err;
4213 }
4214
4215 static int rocker_port_get_phys_port_name(struct net_device *dev,
4216                                           char *buf, size_t len)
4217 {
4218         struct rocker_port *rocker_port = netdev_priv(dev);
4219         struct port_name name = { .buf = buf, .len = len };
4220         int err;
4221
4222         err = rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
4223                               rocker_cmd_get_port_settings_prep, NULL,
4224                               rocker_cmd_get_port_settings_phys_name_proc,
4225                               &name);
4226
4227         return err ? -EOPNOTSUPP : 0;
4228 }
4229
4230 static const struct net_device_ops rocker_port_netdev_ops = {
4231         .ndo_open                       = rocker_port_open,
4232         .ndo_stop                       = rocker_port_stop,
4233         .ndo_start_xmit                 = rocker_port_xmit,
4234         .ndo_set_mac_address            = rocker_port_set_mac_address,
4235         .ndo_change_mtu                 = rocker_port_change_mtu,
4236         .ndo_bridge_getlink             = switchdev_port_bridge_getlink,
4237         .ndo_bridge_setlink             = switchdev_port_bridge_setlink,
4238         .ndo_bridge_dellink             = switchdev_port_bridge_dellink,
4239         .ndo_fdb_add                    = switchdev_port_fdb_add,
4240         .ndo_fdb_del                    = switchdev_port_fdb_del,
4241         .ndo_fdb_dump                   = switchdev_port_fdb_dump,
4242         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4243 };
4244
4245 /********************
4246  * swdev interface
4247  ********************/
4248
4249 static int rocker_port_attr_get(struct net_device *dev,
4250                                 struct switchdev_attr *attr)
4251 {
4252         const struct rocker_port *rocker_port = netdev_priv(dev);
4253         const struct rocker *rocker = rocker_port->rocker;
4254
4255         switch (attr->id) {
4256         case SWITCHDEV_ATTR_PORT_PARENT_ID:
4257                 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4258                 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4259                 break;
4260         case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4261                 attr->u.brport_flags = rocker_port->brport_flags;
4262                 break;
4263         default:
4264                 return -EOPNOTSUPP;
4265         }
4266
4267         return 0;
4268 }
4269
4270 static void rocker_port_trans_abort(const struct rocker_port *rocker_port)
4271 {
4272         struct list_head *mem, *tmp;
4273
4274         list_for_each_safe(mem, tmp, &rocker_port->trans_mem) {
4275                 list_del(mem);
4276                 kfree(mem);
4277         }
4278 }
4279
4280 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4281                                         enum switchdev_trans trans,
4282                                         unsigned long brport_flags)
4283 {
4284         unsigned long orig_flags;
4285         int err = 0;
4286
4287         orig_flags = rocker_port->brport_flags;
4288         rocker_port->brport_flags = brport_flags;
4289         if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
4290                 err = rocker_port_set_learning(rocker_port, trans);
4291
4292         if (trans == SWITCHDEV_TRANS_PREPARE)
4293                 rocker_port->brport_flags = orig_flags;
4294
4295         return err;
4296 }
4297
4298 static int rocker_port_attr_set(struct net_device *dev,
4299                                 struct switchdev_attr *attr)
4300 {
4301         struct rocker_port *rocker_port = netdev_priv(dev);
4302         int err = 0;
4303
4304         switch (attr->trans) {
4305         case SWITCHDEV_TRANS_PREPARE:
4306                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4307                 break;
4308         case SWITCHDEV_TRANS_ABORT:
4309                 rocker_port_trans_abort(rocker_port);
4310                 return 0;
4311         default:
4312                 break;
4313         }
4314
4315         switch (attr->id) {
4316         case SWITCHDEV_ATTR_PORT_STP_STATE:
4317                 err = rocker_port_stp_update(rocker_port, attr->trans,
4318                                              ROCKER_OP_FLAG_NOWAIT,
4319                                              attr->u.stp_state);
4320                 break;
4321         case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4322                 err = rocker_port_brport_flags_set(rocker_port, attr->trans,
4323                                                    attr->u.brport_flags);
4324                 break;
4325         default:
4326                 err = -EOPNOTSUPP;
4327                 break;
4328         }
4329
4330         return err;
4331 }
4332
4333 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4334                                 enum switchdev_trans trans, u16 vid, u16 flags)
4335 {
4336         int err;
4337
4338         /* XXX deal with flags for PVID and untagged */
4339
4340         err = rocker_port_vlan(rocker_port, trans, 0, vid);
4341         if (err)
4342                 return err;
4343
4344         err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4345         if (err)
4346                 rocker_port_vlan(rocker_port, trans,
4347                                  ROCKER_OP_FLAG_REMOVE, vid);
4348
4349         return err;
4350 }
4351
4352 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4353                                  enum switchdev_trans trans,
4354                                  const struct switchdev_obj_vlan *vlan)
4355 {
4356         u16 vid;
4357         int err;
4358
4359         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4360                 err = rocker_port_vlan_add(rocker_port, trans,
4361                                            vid, vlan->flags);
4362                 if (err)
4363                         return err;
4364         }
4365
4366         return 0;
4367 }
4368
4369 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4370                                enum switchdev_trans trans,
4371                                const struct switchdev_obj_fdb *fdb)
4372 {
4373         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4374         int flags = 0;
4375
4376         if (!rocker_port_is_bridged(rocker_port))
4377                 return -EINVAL;
4378
4379         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4380 }
4381
4382 static int rocker_port_obj_add(struct net_device *dev,
4383                                struct switchdev_obj *obj)
4384 {
4385         struct rocker_port *rocker_port = netdev_priv(dev);
4386         const struct switchdev_obj_ipv4_fib *fib4;
4387         int err = 0;
4388
4389         switch (obj->trans) {
4390         case SWITCHDEV_TRANS_PREPARE:
4391                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4392                 break;
4393         case SWITCHDEV_TRANS_ABORT:
4394                 rocker_port_trans_abort(rocker_port);
4395                 return 0;
4396         default:
4397                 break;
4398         }
4399
4400         switch (obj->id) {
4401         case SWITCHDEV_OBJ_PORT_VLAN:
4402                 err = rocker_port_vlans_add(rocker_port, obj->trans,
4403                                             &obj->u.vlan);
4404                 break;
4405         case SWITCHDEV_OBJ_IPV4_FIB:
4406                 fib4 = &obj->u.ipv4_fib;
4407                 err = rocker_port_fib_ipv4(rocker_port, obj->trans,
4408                                            htonl(fib4->dst), fib4->dst_len,
4409                                            fib4->fi, fib4->tb_id, 0);
4410                 break;
4411         case SWITCHDEV_OBJ_PORT_FDB:
4412                 err = rocker_port_fdb_add(rocker_port, obj->trans, &obj->u.fdb);
4413                 break;
4414         default:
4415                 err = -EOPNOTSUPP;
4416                 break;
4417         }
4418
4419         return err;
4420 }
4421
4422 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4423                                 u16 vid, u16 flags)
4424 {
4425         int err;
4426
4427         err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4428                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4429         if (err)
4430                 return err;
4431
4432         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4433                                 ROCKER_OP_FLAG_REMOVE, vid);
4434 }
4435
4436 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4437                                  const struct switchdev_obj_vlan *vlan)
4438 {
4439         u16 vid;
4440         int err;
4441
4442         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4443                 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4444                 if (err)
4445                         return err;
4446         }
4447
4448         return 0;
4449 }
4450
4451 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4452                                enum switchdev_trans trans,
4453                                const struct switchdev_obj_fdb *fdb)
4454 {
4455         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4456         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
4457
4458         if (!rocker_port_is_bridged(rocker_port))
4459                 return -EINVAL;
4460
4461         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4462 }
4463
4464 static int rocker_port_obj_del(struct net_device *dev,
4465                                struct switchdev_obj *obj)
4466 {
4467         struct rocker_port *rocker_port = netdev_priv(dev);
4468         const struct switchdev_obj_ipv4_fib *fib4;
4469         int err = 0;
4470
4471         switch (obj->id) {
4472         case SWITCHDEV_OBJ_PORT_VLAN:
4473                 err = rocker_port_vlans_del(rocker_port, &obj->u.vlan);
4474                 break;
4475         case SWITCHDEV_OBJ_IPV4_FIB:
4476                 fib4 = &obj->u.ipv4_fib;
4477                 err = rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4478                                            htonl(fib4->dst), fib4->dst_len,
4479                                            fib4->fi, fib4->tb_id,
4480                                            ROCKER_OP_FLAG_REMOVE);
4481                 break;
4482         case SWITCHDEV_OBJ_PORT_FDB:
4483                 err = rocker_port_fdb_del(rocker_port, obj->trans, &obj->u.fdb);
4484                 break;
4485         default:
4486                 err = -EOPNOTSUPP;
4487                 break;
4488         }
4489
4490         return err;
4491 }
4492
4493 static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
4494                                 struct switchdev_obj *obj)
4495 {
4496         struct rocker *rocker = rocker_port->rocker;
4497         struct switchdev_obj_fdb *fdb = &obj->u.fdb;
4498         struct rocker_fdb_tbl_entry *found;
4499         struct hlist_node *tmp;
4500         unsigned long lock_flags;
4501         int bkt;
4502         int err = 0;
4503
4504         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4505         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4506                 if (found->key.pport != rocker_port->pport)
4507                         continue;
4508                 fdb->addr = found->key.addr;
4509                 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4510                                                    found->key.vlan_id);
4511                 err = obj->cb(rocker_port->dev, obj);
4512                 if (err)
4513                         break;
4514         }
4515         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4516
4517         return err;
4518 }
4519
4520 static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
4521                                  struct switchdev_obj *obj)
4522 {
4523         struct switchdev_obj_vlan *vlan = &obj->u.vlan;
4524         u16 vid;
4525         int err = 0;
4526
4527         for (vid = 1; vid < VLAN_N_VID; vid++) {
4528                 if (!test_bit(vid, rocker_port->vlan_bitmap))
4529                         continue;
4530                 vlan->flags = 0;
4531                 if (rocker_vlan_id_is_internal(htons(vid)))
4532                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
4533                 vlan->vid_begin = vlan->vid_end = vid;
4534                 err = obj->cb(rocker_port->dev, obj);
4535                 if (err)
4536                         break;
4537         }
4538
4539         return err;
4540 }
4541
4542 static int rocker_port_obj_dump(struct net_device *dev,
4543                                 struct switchdev_obj *obj)
4544 {
4545         const struct rocker_port *rocker_port = netdev_priv(dev);
4546         int err = 0;
4547
4548         switch (obj->id) {
4549         case SWITCHDEV_OBJ_PORT_FDB:
4550                 err = rocker_port_fdb_dump(rocker_port, obj);
4551                 break;
4552         case SWITCHDEV_OBJ_PORT_VLAN:
4553                 err = rocker_port_vlan_dump(rocker_port, obj);
4554                 break;
4555         default:
4556                 err = -EOPNOTSUPP;
4557                 break;
4558         }
4559
4560         return err;
4561 }
4562
4563 static const struct switchdev_ops rocker_port_switchdev_ops = {
4564         .switchdev_port_attr_get        = rocker_port_attr_get,
4565         .switchdev_port_attr_set        = rocker_port_attr_set,
4566         .switchdev_port_obj_add         = rocker_port_obj_add,
4567         .switchdev_port_obj_del         = rocker_port_obj_del,
4568         .switchdev_port_obj_dump        = rocker_port_obj_dump,
4569 };
4570
4571 /********************
4572  * ethtool interface
4573  ********************/
4574
4575 static int rocker_port_get_settings(struct net_device *dev,
4576                                     struct ethtool_cmd *ecmd)
4577 {
4578         struct rocker_port *rocker_port = netdev_priv(dev);
4579
4580         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4581 }
4582
4583 static int rocker_port_set_settings(struct net_device *dev,
4584                                     struct ethtool_cmd *ecmd)
4585 {
4586         struct rocker_port *rocker_port = netdev_priv(dev);
4587
4588         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4589 }
4590
4591 static void rocker_port_get_drvinfo(struct net_device *dev,
4592                                     struct ethtool_drvinfo *drvinfo)
4593 {
4594         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4595         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4596 }
4597
4598 static struct rocker_port_stats {
4599         char str[ETH_GSTRING_LEN];
4600         int type;
4601 } rocker_port_stats[] = {
4602         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4603         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4604         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4605         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4606
4607         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4608         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4609         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4610         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4611 };
4612
4613 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4614
4615 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4616                                     u8 *data)
4617 {
4618         u8 *p = data;
4619         int i;
4620
4621         switch (stringset) {
4622         case ETH_SS_STATS:
4623                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4624                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4625                         p += ETH_GSTRING_LEN;
4626                 }
4627                 break;
4628         }
4629 }
4630
4631 static int
4632 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
4633                                struct rocker_desc_info *desc_info,
4634                                void *priv)
4635 {
4636         struct rocker_tlv *cmd_stats;
4637
4638         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4639                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4640                 return -EMSGSIZE;
4641
4642         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4643         if (!cmd_stats)
4644                 return -EMSGSIZE;
4645
4646         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4647                                rocker_port->pport))
4648                 return -EMSGSIZE;
4649
4650         rocker_tlv_nest_end(desc_info, cmd_stats);
4651
4652         return 0;
4653 }
4654
4655 static int
4656 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
4657                                        const struct rocker_desc_info *desc_info,
4658                                        void *priv)
4659 {
4660         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4661         const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4662         const struct rocker_tlv *pattr;
4663         u32 pport;
4664         u64 *data = priv;
4665         int i;
4666
4667         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4668
4669         if (!attrs[ROCKER_TLV_CMD_INFO])
4670                 return -EIO;
4671
4672         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4673                                 attrs[ROCKER_TLV_CMD_INFO]);
4674
4675         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4676                 return -EIO;
4677
4678         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4679         if (pport != rocker_port->pport)
4680                 return -EIO;
4681
4682         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4683                 pattr = stats_attrs[rocker_port_stats[i].type];
4684                 if (!pattr)
4685                         continue;
4686
4687                 data[i] = rocker_tlv_get_u64(pattr);
4688         }
4689
4690         return 0;
4691 }
4692
4693 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4694                                              void *priv)
4695 {
4696         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
4697                                rocker_cmd_get_port_stats_prep, NULL,
4698                                rocker_cmd_get_port_stats_ethtool_proc,
4699                                priv);
4700 }
4701
4702 static void rocker_port_get_stats(struct net_device *dev,
4703                                   struct ethtool_stats *stats, u64 *data)
4704 {
4705         struct rocker_port *rocker_port = netdev_priv(dev);
4706
4707         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4708                 int i;
4709
4710                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4711                         data[i] = 0;
4712         }
4713 }
4714
4715 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4716 {
4717         switch (sset) {
4718         case ETH_SS_STATS:
4719                 return ROCKER_PORT_STATS_LEN;
4720         default:
4721                 return -EOPNOTSUPP;
4722         }
4723 }
4724
4725 static const struct ethtool_ops rocker_port_ethtool_ops = {
4726         .get_settings           = rocker_port_get_settings,
4727         .set_settings           = rocker_port_set_settings,
4728         .get_drvinfo            = rocker_port_get_drvinfo,
4729         .get_link               = ethtool_op_get_link,
4730         .get_strings            = rocker_port_get_strings,
4731         .get_ethtool_stats      = rocker_port_get_stats,
4732         .get_sset_count         = rocker_port_get_sset_count,
4733 };
4734
4735 /*****************
4736  * NAPI interface
4737  *****************/
4738
4739 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4740 {
4741         return container_of(napi, struct rocker_port, napi_tx);
4742 }
4743
4744 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4745 {
4746         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4747         const struct rocker *rocker = rocker_port->rocker;
4748         const struct rocker_desc_info *desc_info;
4749         u32 credits = 0;
4750         int err;
4751
4752         /* Cleanup tx descriptors */
4753         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4754                 struct sk_buff *skb;
4755
4756                 err = rocker_desc_err(desc_info);
4757                 if (err && net_ratelimit())
4758                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4759                                    err);
4760                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4761
4762                 skb = rocker_desc_cookie_ptr_get(desc_info);
4763                 if (err == 0) {
4764                         rocker_port->dev->stats.tx_packets++;
4765                         rocker_port->dev->stats.tx_bytes += skb->len;
4766                 } else {
4767                         rocker_port->dev->stats.tx_errors++;
4768                 }
4769
4770                 dev_kfree_skb_any(skb);
4771                 credits++;
4772         }
4773
4774         if (credits && netif_queue_stopped(rocker_port->dev))
4775                 netif_wake_queue(rocker_port->dev);
4776
4777         napi_complete(napi);
4778         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4779
4780         return 0;
4781 }
4782
4783 static int rocker_port_rx_proc(const struct rocker *rocker,
4784                                const struct rocker_port *rocker_port,
4785                                struct rocker_desc_info *desc_info)
4786 {
4787         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4788         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4789         size_t rx_len;
4790
4791         if (!skb)
4792                 return -ENOENT;
4793
4794         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4795         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4796                 return -EINVAL;
4797
4798         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4799
4800         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4801         skb_put(skb, rx_len);
4802         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4803
4804         rocker_port->dev->stats.rx_packets++;
4805         rocker_port->dev->stats.rx_bytes += skb->len;
4806
4807         netif_receive_skb(skb);
4808
4809         return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
4810 }
4811
4812 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4813 {
4814         return container_of(napi, struct rocker_port, napi_rx);
4815 }
4816
4817 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4818 {
4819         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4820         const struct rocker *rocker = rocker_port->rocker;
4821         struct rocker_desc_info *desc_info;
4822         u32 credits = 0;
4823         int err;
4824
4825         /* Process rx descriptors */
4826         while (credits < budget &&
4827                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4828                 err = rocker_desc_err(desc_info);
4829                 if (err) {
4830                         if (net_ratelimit())
4831                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4832                                            err);
4833                 } else {
4834                         err = rocker_port_rx_proc(rocker, rocker_port,
4835                                                   desc_info);
4836                         if (err && net_ratelimit())
4837                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4838                                            err);
4839                 }
4840                 if (err)
4841                         rocker_port->dev->stats.rx_errors++;
4842
4843                 rocker_desc_gen_clear(desc_info);
4844                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4845                 credits++;
4846         }
4847
4848         if (credits < budget)
4849                 napi_complete(napi);
4850
4851         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4852
4853         return credits;
4854 }
4855
4856 /*****************
4857  * PCI driver ops
4858  *****************/
4859
4860 static void rocker_carrier_init(const struct rocker_port *rocker_port)
4861 {
4862         const struct rocker *rocker = rocker_port->rocker;
4863         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4864         bool link_up;
4865
4866         link_up = link_status & (1 << rocker_port->pport);
4867         if (link_up)
4868                 netif_carrier_on(rocker_port->dev);
4869         else
4870                 netif_carrier_off(rocker_port->dev);
4871 }
4872
4873 static void rocker_remove_ports(const struct rocker *rocker)
4874 {
4875         struct rocker_port *rocker_port;
4876         int i;
4877
4878         for (i = 0; i < rocker->port_count; i++) {
4879                 rocker_port = rocker->ports[i];
4880                 if (!rocker_port)
4881                         continue;
4882                 rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4883                                    ROCKER_OP_FLAG_REMOVE);
4884                 unregister_netdev(rocker_port->dev);
4885         }
4886         kfree(rocker->ports);
4887 }
4888
4889 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
4890 {
4891         const struct rocker *rocker = rocker_port->rocker;
4892         const struct pci_dev *pdev = rocker->pdev;
4893         int err;
4894
4895         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4896                                                    rocker_port->dev->dev_addr);
4897         if (err) {
4898                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4899                 eth_hw_addr_random(rocker_port->dev);
4900         }
4901 }
4902
4903 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4904 {
4905         const struct pci_dev *pdev = rocker->pdev;
4906         struct rocker_port *rocker_port;
4907         struct net_device *dev;
4908         u16 untagged_vid = 0;
4909         int err;
4910
4911         dev = alloc_etherdev(sizeof(struct rocker_port));
4912         if (!dev)
4913                 return -ENOMEM;
4914         rocker_port = netdev_priv(dev);
4915         rocker_port->dev = dev;
4916         rocker_port->rocker = rocker;
4917         rocker_port->port_number = port_number;
4918         rocker_port->pport = port_number + 1;
4919         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4920         INIT_LIST_HEAD(&rocker_port->trans_mem);
4921
4922         rocker_port_dev_addr_init(rocker_port);
4923         dev->netdev_ops = &rocker_port_netdev_ops;
4924         dev->ethtool_ops = &rocker_port_ethtool_ops;
4925         dev->switchdev_ops = &rocker_port_switchdev_ops;
4926         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4927                        NAPI_POLL_WEIGHT);
4928         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4929                        NAPI_POLL_WEIGHT);
4930         rocker_carrier_init(rocker_port);
4931
4932         dev->features |= NETIF_F_NETNS_LOCAL;
4933
4934         err = register_netdev(dev);
4935         if (err) {
4936                 dev_err(&pdev->dev, "register_netdev failed\n");
4937                 goto err_register_netdev;
4938         }
4939         rocker->ports[port_number] = rocker_port;
4940
4941         rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
4942
4943         err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4944         if (err) {
4945                 dev_err(&pdev->dev, "install ig port table failed\n");
4946                 goto err_port_ig_tbl;
4947         }
4948
4949         rocker_port->internal_vlan_id =
4950                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4951
4952         err = rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
4953                                    untagged_vid, 0);
4954         if (err) {
4955                 netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
4956                 goto err_untagged_vlan;
4957         }
4958
4959         return 0;
4960
4961 err_untagged_vlan:
4962         rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4963                            ROCKER_OP_FLAG_REMOVE);
4964 err_port_ig_tbl:
4965         unregister_netdev(dev);
4966 err_register_netdev:
4967         free_netdev(dev);
4968         return err;
4969 }
4970
4971 static int rocker_probe_ports(struct rocker *rocker)
4972 {
4973         int i;
4974         size_t alloc_size;
4975         int err;
4976
4977         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4978         rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
4979         if (!rocker->ports)
4980                 return -ENOMEM;
4981         for (i = 0; i < rocker->port_count; i++) {
4982                 err = rocker_probe_port(rocker, i);
4983                 if (err)
4984                         goto remove_ports;
4985         }
4986         return 0;
4987
4988 remove_ports:
4989         rocker_remove_ports(rocker);
4990         return err;
4991 }
4992
4993 static int rocker_msix_init(struct rocker *rocker)
4994 {
4995         struct pci_dev *pdev = rocker->pdev;
4996         int msix_entries;
4997         int i;
4998         int err;
4999
5000         msix_entries = pci_msix_vec_count(pdev);
5001         if (msix_entries < 0)
5002                 return msix_entries;
5003
5004         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
5005                 return -EINVAL;
5006
5007         rocker->msix_entries = kmalloc_array(msix_entries,
5008                                              sizeof(struct msix_entry),
5009                                              GFP_KERNEL);
5010         if (!rocker->msix_entries)
5011                 return -ENOMEM;
5012
5013         for (i = 0; i < msix_entries; i++)
5014                 rocker->msix_entries[i].entry = i;
5015
5016         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
5017         if (err < 0)
5018                 goto err_enable_msix;
5019
5020         return 0;
5021
5022 err_enable_msix:
5023         kfree(rocker->msix_entries);
5024         return err;
5025 }
5026
5027 static void rocker_msix_fini(const struct rocker *rocker)
5028 {
5029         pci_disable_msix(rocker->pdev);
5030         kfree(rocker->msix_entries);
5031 }
5032
5033 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5034 {
5035         struct rocker *rocker;
5036         int err;
5037
5038         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
5039         if (!rocker)
5040                 return -ENOMEM;
5041
5042         err = pci_enable_device(pdev);
5043         if (err) {
5044                 dev_err(&pdev->dev, "pci_enable_device failed\n");
5045                 goto err_pci_enable_device;
5046         }
5047
5048         err = pci_request_regions(pdev, rocker_driver_name);
5049         if (err) {
5050                 dev_err(&pdev->dev, "pci_request_regions failed\n");
5051                 goto err_pci_request_regions;
5052         }
5053
5054         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5055         if (!err) {
5056                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5057                 if (err) {
5058                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5059                         goto err_pci_set_dma_mask;
5060                 }
5061         } else {
5062                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5063                 if (err) {
5064                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5065                         goto err_pci_set_dma_mask;
5066                 }
5067         }
5068
5069         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5070                 dev_err(&pdev->dev, "invalid PCI region size\n");
5071                 err = -EINVAL;
5072                 goto err_pci_resource_len_check;
5073         }
5074
5075         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5076                                   pci_resource_len(pdev, 0));
5077         if (!rocker->hw_addr) {
5078                 dev_err(&pdev->dev, "ioremap failed\n");
5079                 err = -EIO;
5080                 goto err_ioremap;
5081         }
5082         pci_set_master(pdev);
5083
5084         rocker->pdev = pdev;
5085         pci_set_drvdata(pdev, rocker);
5086
5087         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5088
5089         err = rocker_msix_init(rocker);
5090         if (err) {
5091                 dev_err(&pdev->dev, "MSI-X init failed\n");
5092                 goto err_msix_init;
5093         }
5094
5095         err = rocker_basic_hw_test(rocker);
5096         if (err) {
5097                 dev_err(&pdev->dev, "basic hw test failed\n");
5098                 goto err_basic_hw_test;
5099         }
5100
5101         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5102
5103         err = rocker_dma_rings_init(rocker);
5104         if (err)
5105                 goto err_dma_rings_init;
5106
5107         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5108                           rocker_cmd_irq_handler, 0,
5109                           rocker_driver_name, rocker);
5110         if (err) {
5111                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5112                 goto err_request_cmd_irq;
5113         }
5114
5115         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5116                           rocker_event_irq_handler, 0,
5117                           rocker_driver_name, rocker);
5118         if (err) {
5119                 dev_err(&pdev->dev, "cannot assign event irq\n");
5120                 goto err_request_event_irq;
5121         }
5122
5123         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5124
5125         err = rocker_init_tbls(rocker);
5126         if (err) {
5127                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5128                 goto err_init_tbls;
5129         }
5130
5131         err = rocker_probe_ports(rocker);
5132         if (err) {
5133                 dev_err(&pdev->dev, "failed to probe ports\n");
5134                 goto err_probe_ports;
5135         }
5136
5137         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
5138
5139         return 0;
5140
5141 err_probe_ports:
5142         rocker_free_tbls(rocker);
5143 err_init_tbls:
5144         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5145 err_request_event_irq:
5146         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5147 err_request_cmd_irq:
5148         rocker_dma_rings_fini(rocker);
5149 err_dma_rings_init:
5150 err_basic_hw_test:
5151         rocker_msix_fini(rocker);
5152 err_msix_init:
5153         iounmap(rocker->hw_addr);
5154 err_ioremap:
5155 err_pci_resource_len_check:
5156 err_pci_set_dma_mask:
5157         pci_release_regions(pdev);
5158 err_pci_request_regions:
5159         pci_disable_device(pdev);
5160 err_pci_enable_device:
5161         kfree(rocker);
5162         return err;
5163 }
5164
5165 static void rocker_remove(struct pci_dev *pdev)
5166 {
5167         struct rocker *rocker = pci_get_drvdata(pdev);
5168
5169         rocker_free_tbls(rocker);
5170         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5171         rocker_remove_ports(rocker);
5172         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5173         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5174         rocker_dma_rings_fini(rocker);
5175         rocker_msix_fini(rocker);
5176         iounmap(rocker->hw_addr);
5177         pci_release_regions(rocker->pdev);
5178         pci_disable_device(rocker->pdev);
5179         kfree(rocker);
5180 }
5181
5182 static struct pci_driver rocker_pci_driver = {
5183         .name           = rocker_driver_name,
5184         .id_table       = rocker_pci_id_table,
5185         .probe          = rocker_probe,
5186         .remove         = rocker_remove,
5187 };
5188
5189 /************************************
5190  * Net device notifier event handler
5191  ************************************/
5192
5193 static bool rocker_port_dev_check(const struct net_device *dev)
5194 {
5195         return dev->netdev_ops == &rocker_port_netdev_ops;
5196 }
5197
5198 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5199                                    struct net_device *bridge)
5200 {
5201         u16 untagged_vid = 0;
5202         int err;
5203
5204         /* Port is joining bridge, so the internal VLAN for the
5205          * port is going to change to the bridge internal VLAN.
5206          * Let's remove untagged VLAN (vid=0) from port and
5207          * re-add once internal VLAN has changed.
5208          */
5209
5210         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5211         if (err)
5212                 return err;
5213
5214         rocker_port_internal_vlan_id_put(rocker_port,
5215                                          rocker_port->dev->ifindex);
5216         rocker_port->internal_vlan_id =
5217                 rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
5218
5219         rocker_port->bridge_dev = bridge;
5220
5221         return rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5222                                     untagged_vid, 0);
5223 }
5224
5225 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5226 {
5227         u16 untagged_vid = 0;
5228         int err;
5229
5230         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5231         if (err)
5232                 return err;
5233
5234         rocker_port_internal_vlan_id_put(rocker_port,
5235                                          rocker_port->bridge_dev->ifindex);
5236         rocker_port->internal_vlan_id =
5237                 rocker_port_internal_vlan_id_get(rocker_port,
5238                                                  rocker_port->dev->ifindex);
5239
5240         rocker_port->bridge_dev = NULL;
5241
5242         err = rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5243                                    untagged_vid, 0);
5244         if (err)
5245                 return err;
5246
5247         if (rocker_port->dev->flags & IFF_UP)
5248                 err = rocker_port_fwd_enable(rocker_port,
5249                                              SWITCHDEV_TRANS_NONE, 0);
5250
5251         return err;
5252 }
5253
5254 static int rocker_port_master_changed(struct net_device *dev)
5255 {
5256         struct rocker_port *rocker_port = netdev_priv(dev);
5257         struct net_device *master = netdev_master_upper_dev_get(dev);
5258         int err = 0;
5259
5260         /* There are currently three cases handled here:
5261          * 1. Joining a bridge
5262          * 2. Leaving a previously joined bridge
5263          * 3. Other, e.g. being added to or removed from a bond or openvswitch,
5264          *    in which case nothing is done
5265          */
5266         if (master && master->rtnl_link_ops &&
5267             !strcmp(master->rtnl_link_ops->kind, "bridge"))
5268                 err = rocker_port_bridge_join(rocker_port, master);
5269         else if (rocker_port_is_bridged(rocker_port))
5270                 err = rocker_port_bridge_leave(rocker_port);
5271
5272         return err;
5273 }
5274
5275 static int rocker_netdevice_event(struct notifier_block *unused,
5276                                   unsigned long event, void *ptr)
5277 {
5278         struct net_device *dev;
5279         int err;
5280
5281         switch (event) {
5282         case NETDEV_CHANGEUPPER:
5283                 dev = netdev_notifier_info_to_dev(ptr);
5284                 if (!rocker_port_dev_check(dev))
5285                         return NOTIFY_DONE;
5286                 err = rocker_port_master_changed(dev);
5287                 if (err)
5288                         netdev_warn(dev,
5289                                     "failed to reflect master change (err %d)\n",
5290                                     err);
5291                 break;
5292         }
5293
5294         return NOTIFY_DONE;
5295 }
5296
5297 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5298         .notifier_call = rocker_netdevice_event,
5299 };
5300
5301 /************************************
5302  * Net event notifier event handler
5303  ************************************/
5304
5305 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5306 {
5307         struct rocker_port *rocker_port = netdev_priv(dev);
5308         int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
5309                     ROCKER_OP_FLAG_NOWAIT;
5310         __be32 ip_addr = *(__be32 *)n->primary_key;
5311
5312         return rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,
5313                                       flags, ip_addr, n->ha);
5314 }
5315
5316 static int rocker_netevent_event(struct notifier_block *unused,
5317                                  unsigned long event, void *ptr)
5318 {
5319         struct net_device *dev;
5320         struct neighbour *n = ptr;
5321         int err;
5322
5323         switch (event) {
5324         case NETEVENT_NEIGH_UPDATE:
5325                 if (n->tbl != &arp_tbl)
5326                         return NOTIFY_DONE;
5327                 dev = n->dev;
5328                 if (!rocker_port_dev_check(dev))
5329                         return NOTIFY_DONE;
5330                 err = rocker_neigh_update(dev, n);
5331                 if (err)
5332                         netdev_warn(dev,
5333                                     "failed to handle neigh update (err %d)\n",
5334                                     err);
5335                 break;
5336         }
5337
5338         return NOTIFY_DONE;
5339 }
5340
5341 static struct notifier_block rocker_netevent_nb __read_mostly = {
5342         .notifier_call = rocker_netevent_event,
5343 };
5344
5345 /***********************
5346  * Module init and exit
5347  ***********************/
5348
5349 static int __init rocker_module_init(void)
5350 {
5351         int err;
5352
5353         register_netdevice_notifier(&rocker_netdevice_nb);
5354         register_netevent_notifier(&rocker_netevent_nb);
5355         err = pci_register_driver(&rocker_pci_driver);
5356         if (err)
5357                 goto err_pci_register_driver;
5358         return 0;
5359
5360 err_pci_register_driver:
5361         unregister_netevent_notifier(&rocker_netevent_nb);
5362         unregister_netdevice_notifier(&rocker_netdevice_nb);
5363         return err;
5364 }
5365
5366 static void __exit rocker_module_exit(void)
5367 {
5368         unregister_netevent_notifier(&rocker_netevent_nb);
5369         unregister_netdevice_notifier(&rocker_netdevice_nb);
5370         pci_unregister_driver(&rocker_pci_driver);
5371 }
5372
5373 module_init(rocker_module_init);
5374 module_exit(rocker_module_exit);
5375
5376 MODULE_LICENSE("GPL v2");
5377 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5378 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5379 MODULE_DESCRIPTION("Rocker switch device driver");
5380 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);