drivers/net/ixgbe/ixgbe_dcb_nl.c

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2010 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   Linux NICS <linux.nics@intel.com>
  24   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26
  27 *******************************************************************************/
  28
  29 #include "ixgbe.h"
  30 #include <linux/dcbnl.h>
  31 #include "ixgbe_dcb_82598.h"
  32 #include "ixgbe_dcb_82599.h"
  33
  34 /* Callbacks for DCB netlink in the kernel */
  35 #define BIT_DCB_MODE    0x01
  36 #define BIT_PFC         0x02
  37 #define BIT_PG_RX       0x04
  38 #define BIT_PG_TX       0x08
  39 #define BIT_APP_UPCHG   0x10
  40 #define BIT_RESETLINK   0x40
  41 #define BIT_LINKSPEED   0x80
  42
  43 /* Responses for the DCB_C_SET_ALL command */
  44 #define DCB_HW_CHG_RST  0  /* DCB configuration changed with reset */
  45 #define DCB_NO_HW_CHG   1  /* DCB configuration did not change */
  46 #define DCB_HW_CHG      2  /* DCB configuration changed, no reset */
  47
  48 int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
  49                        struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
  50 {
  51         struct tc_configuration *src_tc_cfg = NULL;
  52         struct tc_configuration *dst_tc_cfg = NULL;
  53         int i;
  54
  55         if (!src_dcb_cfg || !dst_dcb_cfg)
  56                 return -EINVAL;
  57
  58         for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
  59                 src_tc_cfg = &src_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  60                 dst_tc_cfg = &dst_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  61
  62                 dst_tc_cfg->path[DCB_TX_CONFIG].prio_type =
  63                                 src_tc_cfg->path[DCB_TX_CONFIG].prio_type;
  64
  65                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_id =
  66                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_id;
  67
  68                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_percent =
  69                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_percent;
  70
  71                 dst_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap =
  72                                 src_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap;
  73
  74                 dst_tc_cfg->path[DCB_RX_CONFIG].prio_type =
  75                                 src_tc_cfg->path[DCB_RX_CONFIG].prio_type;
  76
  77                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_id =
  78                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_id;
  79
  80                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_percent =
  81                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_percent;
  82
  83                 dst_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap =
  84                                 src_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap;
  85         }
  86
  87         for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
  88                 dst_dcb_cfg->bw_percentage[DCB_TX_CONFIG]
  89                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  90                                 [DCB_TX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  91                 dst_dcb_cfg->bw_percentage[DCB_RX_CONFIG]
  92                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  93                                 [DCB_RX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  94         }
  95
  96         for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
  97                 dst_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc =
  98                         src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc;
  99         }
 100
 101         dst_dcb_cfg->pfc_mode_enable = src_dcb_cfg->pfc_mode_enable;
 102
 103         return 0;
 104 }
 105
 106 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
 107 {
 108         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 109
 110         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 111 }
 112
 113 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 114 {
 115         u8 err = 0;
 116         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 117
 118         if (state > 0) {
 119                 /* Turn on DCB */
 120                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
 121                         goto out;
 122
 123                 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
 124                         e_err(drv, "Enable failed, needs MSI-X\n");
 125                         err = 1;
 126                         goto out;
 127                 }
 128
 129                 if (netif_running(netdev))
 130                         netdev->netdev_ops->ndo_stop(netdev);
 131                 ixgbe_clear_interrupt_scheme(adapter);
 132
 133                 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
 134                 switch (adapter->hw.mac.type) {
 135                 case ixgbe_mac_82598EB:
 136                         adapter->last_lfc_mode = adapter->hw.fc.current_mode;
 137                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 138                         break;
 139                 case ixgbe_mac_82599EB:
 140                 case ixgbe_mac_X540:
 141                         adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
 142                         adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
 143                         break;
 144                 default:
 145                         break;
 146                 }
 147
 148                 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
 149                 ixgbe_init_interrupt_scheme(adapter);
 150                 if (netif_running(netdev))
 151                         netdev->netdev_ops->ndo_open(netdev);
 152         } else {
 153                 /* Turn off DCB */
 154                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 155                         if (netif_running(netdev))
 156                                 netdev->netdev_ops->ndo_stop(netdev);
 157                         ixgbe_clear_interrupt_scheme(adapter);
 158
 159                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 160                         adapter->temp_dcb_cfg.pfc_mode_enable = false;
 161                         adapter->dcb_cfg.pfc_mode_enable = false;
 162                         adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
 163                         adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
 164                         switch (adapter->hw.mac.type) {
 165                         case ixgbe_mac_82599EB:
 166                         case ixgbe_mac_X540:
 167                                 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
 168                                 break;
 169                         default:
 170                                 break;
 171                         }
 172
 173                         ixgbe_init_interrupt_scheme(adapter);
 174                         if (netif_running(netdev))
 175                                 netdev->netdev_ops->ndo_open(netdev);
 176                 }
 177         }
 178 out:
 179         return err;
 180 }
 181
 182 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 183                                          u8 *perm_addr)
 184 {
 185         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 186         int i, j;
 187
 188         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 189
 190         for (i = 0; i < netdev->addr_len; i++)
 191                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 192
 193         switch (adapter->hw.mac.type) {
 194         case ixgbe_mac_82599EB:
 195         case ixgbe_mac_X540:
 196                 for (j = 0; j < netdev->addr_len; j++, i++)
 197                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 198                 break;
 199         default:
 200                 break;
 201         }
 202 }
 203
 204 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 205                                          u8 prio, u8 bwg_id, u8 bw_pct,
 206                                          u8 up_map)
 207 {
 208         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 209
 210         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 211                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 212         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 213                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 214         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 215                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 216                         bw_pct;
 217         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 218                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 219                         up_map;
 220
 221         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 222              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 223             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 224              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 225             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 226              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 227             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 228              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)) {
 229                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 230                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 231         }
 232 }
 233
 234 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 235                                           u8 bw_pct)
 236 {
 237         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 238
 239         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 240
 241         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 242             adapter->dcb_cfg.bw_percentage[0][bwg_id]) {
 243                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 244                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 245         }
 246 }
 247
 248 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 249                                          u8 prio, u8 bwg_id, u8 bw_pct,
 250                                          u8 up_map)
 251 {
 252         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 253
 254         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 255                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 256         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 257                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 258         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 259                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 260                         bw_pct;
 261         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 262                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 263                         up_map;
 264
 265         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 266              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 267             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 268              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 269             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 270              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 271             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 272              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)) {
 273                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 274                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 275         }
 276 }
 277
 278 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 279                                           u8 bw_pct)
 280 {
 281         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 282
 283         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 284
 285         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 286             adapter->dcb_cfg.bw_percentage[1][bwg_id]) {
 287                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 288                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 289         }
 290 }
 291
 292 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 293                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 294                                          u8 *up_map)
 295 {
 296         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 297
 298         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 299         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 300         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 301         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 302 }
 303
 304 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 305                                           u8 *bw_pct)
 306 {
 307         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 308
 309         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 310 }
 311
 312 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 313                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 314                                          u8 *up_map)
 315 {
 316         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 317
 318         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 319         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 320         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 321         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 322 }
 323
 324 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 325                                           u8 *bw_pct)
 326 {
 327         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 328
 329         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 330 }
 331
 332 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 333                                     u8 setting)
 334 {
 335         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 336
 337         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 338         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 339             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 340                 adapter->dcb_set_bitmap |= BIT_PFC;
 341                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 342         }
 343 }
 344
 345 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 346                                     u8 *setting)
 347 {
 348         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 349
 350         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 351 }
 352
 353 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 354 {
 355         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 356         bool do_reset;
 357         int ret;
 358
 359         if (!adapter->dcb_set_bitmap)
 360                 return DCB_NO_HW_CHG;
 361
 362         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 363                                  adapter->ring_feature[RING_F_DCB].indices);
 364
 365         if (ret)
 366                 return DCB_NO_HW_CHG;
 367
 368         /*
 369          * Only take down the adapter if the configuration change
 370          * requires a reset.
 371          */
 372         do_reset = adapter->dcb_set_bitmap & (BIT_RESETLINK | BIT_APP_UPCHG);
 373
 374         if (do_reset) {
 375                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 376                         msleep(1);
 377
 378                 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 379                         if (netif_running(netdev))
 380                                 netdev->netdev_ops->ndo_stop(netdev);
 381                         ixgbe_clear_interrupt_scheme(adapter);
 382                 } else {
 383                         if (netif_running(netdev))
 384                                 ixgbe_down(adapter);
 385                 }
 386         }
 387
 388         if (adapter->dcb_cfg.pfc_mode_enable) {
 389                 switch (adapter->hw.mac.type) {
 390                 case ixgbe_mac_82599EB:
 391                 case ixgbe_mac_X540:
 392                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
 393                                 adapter->last_lfc_mode =
 394                                                   adapter->hw.fc.current_mode;
 395                         break;
 396                 default:
 397                         break;
 398                 }
 399                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 400         } else {
 401                 switch (adapter->hw.mac.type) {
 402                 case ixgbe_mac_82598EB:
 403                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 404                         break;
 405                 case ixgbe_mac_82599EB:
 406                 case ixgbe_mac_X540:
 407                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 408                         break;
 409                 default:
 410                         break;
 411                 }
 412         }
 413
 414         if (do_reset) {
 415                 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 416                         ixgbe_init_interrupt_scheme(adapter);
 417                         if (netif_running(netdev))
 418                                 netdev->netdev_ops->ndo_open(netdev);
 419                 } else {
 420                         if (netif_running(netdev))
 421                                 ixgbe_up(adapter);
 422                 }
 423                 ret = DCB_HW_CHG_RST;
 424         } else if (adapter->dcb_set_bitmap & BIT_PFC) {
 425                 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
 426                         ixgbe_dcb_config_pfc_82598(&adapter->hw,
 427                                                    &adapter->dcb_cfg);
 428                 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
 429                         ixgbe_dcb_config_pfc_82599(&adapter->hw,
 430                                                    &adapter->dcb_cfg);
 431                 ret = DCB_HW_CHG;
 432         }
 433         if (adapter->dcb_cfg.pfc_mode_enable)
 434                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 435
 436         if (do_reset)
 437                 clear_bit(__IXGBE_RESETTING, &adapter->state);
 438         adapter->dcb_set_bitmap = 0x00;
 439         return ret;
 440 }
 441
 442 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 443 {
 444         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 445         u8 rval = 0;
 446
 447         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 448                 switch (capid) {
 449                 case DCB_CAP_ATTR_PG:
 450                         *cap = true;
 451                         break;
 452                 case DCB_CAP_ATTR_PFC:
 453                         *cap = true;
 454                         break;
 455                 case DCB_CAP_ATTR_UP2TC:
 456                         *cap = false;
 457                         break;
 458                 case DCB_CAP_ATTR_PG_TCS:
 459                         *cap = 0x80;
 460                         break;
 461                 case DCB_CAP_ATTR_PFC_TCS:
 462                         *cap = 0x80;
 463                         break;
 464                 case DCB_CAP_ATTR_GSP:
 465                         *cap = true;
 466                         break;
 467                 case DCB_CAP_ATTR_BCN:
 468                         *cap = false;
 469                         break;
 470                 default:
 471                         rval = -EINVAL;
 472                         break;
 473                 }
 474         } else {
 475                 rval = -EINVAL;
 476         }
 477
 478         return rval;
 479 }
 480
 481 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 482 {
 483         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 484         u8 rval = 0;
 485
 486         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 487                 switch (tcid) {
 488                 case DCB_NUMTCS_ATTR_PG:
 489                         *num = MAX_TRAFFIC_CLASS;
 490                         break;
 491                 case DCB_NUMTCS_ATTR_PFC:
 492                         *num = MAX_TRAFFIC_CLASS;
 493                         break;
 494                 default:
 495                         rval = -EINVAL;
 496                         break;
 497                 }
 498         } else {
 499                 rval = -EINVAL;
 500         }
 501
 502         return rval;
 503 }
 504
 505 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 506 {
 507         return -EINVAL;
 508 }
 509
 510 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 511 {
 512         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 513
 514         return adapter->dcb_cfg.pfc_mode_enable;
 515 }
 516
 517 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 518 {
 519         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 520
 521         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 522         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 523                 adapter->dcb_cfg.pfc_mode_enable)
 524                 adapter->dcb_set_bitmap |= BIT_PFC;
 525 }
 526
 527 /**
 528  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 529  * @netdev : the corresponding netdev
 530  * @idtype : identifies the id as ether type or TCP/UDP port number
 531  * @id: id is either ether type or TCP/UDP port number
 532  *
 533  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 534  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 535  * error.
 536  */
 537 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 538 {
 539         u8 rval = 0;
 540
 541         switch (idtype) {
 542         case DCB_APP_IDTYPE_ETHTYPE:
 543 #ifdef IXGBE_FCOE
 544                 if (id == ETH_P_FCOE)
 545                         rval = ixgbe_fcoe_getapp(netdev_priv(netdev));
 546 #endif
 547                 break;
 548         case DCB_APP_IDTYPE_PORTNUM:
 549                 break;
 550         default:
 551                 break;
 552         }
 553         return rval;
 554 }
 555
 556 /**
 557  * ixgbe_dcbnl_setapp - set the DCBX application user priority
 558  * @netdev : the corresponding netdev
 559  * @idtype : identifies the id as ether type or TCP/UDP port number
 560  * @id: id is either ether type or TCP/UDP port number
 561  * @up: the 802.1p user priority bitmap
 562  *
 563  * Returns : 0 on success or 1 on error
 564  */
 565 static u8 ixgbe_dcbnl_setapp(struct net_device *netdev,
 566                              u8 idtype, u16 id, u8 up)
 567 {
 568         u8 rval = 1;
 569
 570         switch (idtype) {
 571         case DCB_APP_IDTYPE_ETHTYPE:
 572 #ifdef IXGBE_FCOE
 573                 if (id == ETH_P_FCOE) {
 574                         u8 old_tc;
 575                         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 576
 577                         /* Get current programmed tc */
 578                         old_tc = adapter->fcoe.tc;
 579                         rval = ixgbe_fcoe_setapp(adapter, up);
 580
 581                         if (rval ||
 582                            !(adapter->flags & IXGBE_FLAG_DCB_ENABLED) ||
 583                            !(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
 584                                 break;
 585
 586                         /* The FCoE application priority may be changed multiple
 587                          * times in quick sucession with switches that build up
 588                          * TLVs. To avoid creating uneeded device resets this
 589                          * checks the actual HW configuration and clears
 590                          * BIT_APP_UPCHG if a HW configuration change is not
 591                          * need
 592                          */
 593                         if (old_tc == adapter->fcoe.tc)
 594                                 adapter->dcb_set_bitmap &= ~BIT_APP_UPCHG;
 595                         else
 596                                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
 597                 }
 598 #endif
 599                 break;
 600         case DCB_APP_IDTYPE_PORTNUM:
 601                 break;
 602         default:
 603                 break;
 604         }
 605         return rval;
 606 }
 607
 608 const struct dcbnl_rtnl_ops dcbnl_ops = {
 609         .getstate       = ixgbe_dcbnl_get_state,
 610         .setstate       = ixgbe_dcbnl_set_state,
 611         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 612         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 613         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 614         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 615         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 616         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 617         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 618         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 619         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 620         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 621         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 622         .setall         = ixgbe_dcbnl_set_all,
 623         .getcap         = ixgbe_dcbnl_getcap,
 624         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 625         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 626         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 627         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 628         .getapp         = ixgbe_dcbnl_getapp,
 629         .setapp         = ixgbe_dcbnl_setapp,
 630 };
 631