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Merge tag 'nios2-fixes-v3.19-rc6' of git://git.rocketboards.org/linux-socfpga-next
[deliverable/linux.git] / drivers / infiniband / hw / mlx4 / main.c
1 /*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/errno.h>
38 #include <linux/netdevice.h>
39 #include <linux/inetdevice.h>
40 #include <linux/rtnetlink.h>
41 #include <linux/if_vlan.h>
42 #include <net/ipv6.h>
43 #include <net/addrconf.h>
44
45 #include <rdma/ib_smi.h>
46 #include <rdma/ib_user_verbs.h>
47 #include <rdma/ib_addr.h>
48
49 #include <linux/mlx4/driver.h>
50 #include <linux/mlx4/cmd.h>
51 #include <linux/mlx4/qp.h>
52
53 #include "mlx4_ib.h"
54 #include "user.h"
55
56 #define DRV_NAME MLX4_IB_DRV_NAME
57 #define DRV_VERSION "2.2-1"
58 #define DRV_RELDATE "Feb 2014"
59
60 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
61 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
62 #define MLX4_IB_CARD_REV_A0 0xA0
63
64 MODULE_AUTHOR("Roland Dreier");
65 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
66 MODULE_LICENSE("Dual BSD/GPL");
67 MODULE_VERSION(DRV_VERSION);
68
69 int mlx4_ib_sm_guid_assign = 1;
70 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
71 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)");
72
73 static const char mlx4_ib_version[] =
74 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
75 DRV_VERSION " (" DRV_RELDATE ")\n";
76
77 struct update_gid_work {
78 struct work_struct work;
79 union ib_gid gids[128];
80 struct mlx4_ib_dev *dev;
81 int port;
82 };
83
84 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
85
86 static struct workqueue_struct *wq;
87
88 static void init_query_mad(struct ib_smp *mad)
89 {
90 mad->base_version = 1;
91 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
92 mad->class_version = 1;
93 mad->method = IB_MGMT_METHOD_GET;
94 }
95
96 static union ib_gid zgid;
97
98 static int check_flow_steering_support(struct mlx4_dev *dev)
99 {
100 int eth_num_ports = 0;
101 int ib_num_ports = 0;
102
103 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
104
105 if (dmfs) {
106 int i;
107 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
108 eth_num_ports++;
109 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
110 ib_num_ports++;
111 dmfs &= (!ib_num_ports ||
112 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
113 (!eth_num_ports ||
114 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
115 if (ib_num_ports && mlx4_is_mfunc(dev)) {
116 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
117 dmfs = 0;
118 }
119 }
120 return dmfs;
121 }
122
123 static int num_ib_ports(struct mlx4_dev *dev)
124 {
125 int ib_ports = 0;
126 int i;
127
128 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
129 ib_ports++;
130
131 return ib_ports;
132 }
133
134 static int mlx4_ib_query_device(struct ib_device *ibdev,
135 struct ib_device_attr *props)
136 {
137 struct mlx4_ib_dev *dev = to_mdev(ibdev);
138 struct ib_smp *in_mad = NULL;
139 struct ib_smp *out_mad = NULL;
140 int err = -ENOMEM;
141 int have_ib_ports;
142
143 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
144 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
145 if (!in_mad || !out_mad)
146 goto out;
147
148 init_query_mad(in_mad);
149 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
150
151 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
152 1, NULL, NULL, in_mad, out_mad);
153 if (err)
154 goto out;
155
156 memset(props, 0, sizeof *props);
157
158 have_ib_ports = num_ib_ports(dev->dev);
159
160 props->fw_ver = dev->dev->caps.fw_ver;
161 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
162 IB_DEVICE_PORT_ACTIVE_EVENT |
163 IB_DEVICE_SYS_IMAGE_GUID |
164 IB_DEVICE_RC_RNR_NAK_GEN |
165 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
166 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
167 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
168 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
169 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
170 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
171 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
172 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
173 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
174 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
175 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
176 if (dev->dev->caps.max_gso_sz &&
177 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
178 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
179 props->device_cap_flags |= IB_DEVICE_UD_TSO;
180 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
181 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
182 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
183 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
184 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
185 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
186 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
187 props->device_cap_flags |= IB_DEVICE_XRC;
188 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
189 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
190 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
191 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
192 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
193 else
194 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
195 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
196 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
197 }
198
199 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
200 0xffffff;
201 props->vendor_part_id = dev->dev->pdev->device;
202 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
203 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
204
205 props->max_mr_size = ~0ull;
206 props->page_size_cap = dev->dev->caps.page_size_cap;
207 props->max_qp = dev->dev->quotas.qp;
208 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
209 props->max_sge = min(dev->dev->caps.max_sq_sg,
210 dev->dev->caps.max_rq_sg);
211 props->max_cq = dev->dev->quotas.cq;
212 props->max_cqe = dev->dev->caps.max_cqes;
213 props->max_mr = dev->dev->quotas.mpt;
214 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
215 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
216 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
217 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
218 props->max_srq = dev->dev->quotas.srq;
219 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
220 props->max_srq_sge = dev->dev->caps.max_srq_sge;
221 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
222 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
223 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
224 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
225 props->masked_atomic_cap = props->atomic_cap;
226 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
227 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
228 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
229 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
230 props->max_mcast_grp;
231 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
232
233 out:
234 kfree(in_mad);
235 kfree(out_mad);
236
237 return err;
238 }
239
240 static enum rdma_link_layer
241 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
242 {
243 struct mlx4_dev *dev = to_mdev(device)->dev;
244
245 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
246 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
247 }
248
249 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
250 struct ib_port_attr *props, int netw_view)
251 {
252 struct ib_smp *in_mad = NULL;
253 struct ib_smp *out_mad = NULL;
254 int ext_active_speed;
255 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
256 int err = -ENOMEM;
257
258 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
259 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
260 if (!in_mad || !out_mad)
261 goto out;
262
263 init_query_mad(in_mad);
264 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
265 in_mad->attr_mod = cpu_to_be32(port);
266
267 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
268 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
269
270 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
271 in_mad, out_mad);
272 if (err)
273 goto out;
274
275
276 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
277 props->lmc = out_mad->data[34] & 0x7;
278 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
279 props->sm_sl = out_mad->data[36] & 0xf;
280 props->state = out_mad->data[32] & 0xf;
281 props->phys_state = out_mad->data[33] >> 4;
282 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
283 if (netw_view)
284 props->gid_tbl_len = out_mad->data[50];
285 else
286 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
287 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
288 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
289 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
290 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
291 props->active_width = out_mad->data[31] & 0xf;
292 props->active_speed = out_mad->data[35] >> 4;
293 props->max_mtu = out_mad->data[41] & 0xf;
294 props->active_mtu = out_mad->data[36] >> 4;
295 props->subnet_timeout = out_mad->data[51] & 0x1f;
296 props->max_vl_num = out_mad->data[37] >> 4;
297 props->init_type_reply = out_mad->data[41] >> 4;
298
299 /* Check if extended speeds (EDR/FDR/...) are supported */
300 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
301 ext_active_speed = out_mad->data[62] >> 4;
302
303 switch (ext_active_speed) {
304 case 1:
305 props->active_speed = IB_SPEED_FDR;
306 break;
307 case 2:
308 props->active_speed = IB_SPEED_EDR;
309 break;
310 }
311 }
312
313 /* If reported active speed is QDR, check if is FDR-10 */
314 if (props->active_speed == IB_SPEED_QDR) {
315 init_query_mad(in_mad);
316 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
317 in_mad->attr_mod = cpu_to_be32(port);
318
319 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
320 NULL, NULL, in_mad, out_mad);
321 if (err)
322 goto out;
323
324 /* Checking LinkSpeedActive for FDR-10 */
325 if (out_mad->data[15] & 0x1)
326 props->active_speed = IB_SPEED_FDR10;
327 }
328
329 /* Avoid wrong speed value returned by FW if the IB link is down. */
330 if (props->state == IB_PORT_DOWN)
331 props->active_speed = IB_SPEED_SDR;
332
333 out:
334 kfree(in_mad);
335 kfree(out_mad);
336 return err;
337 }
338
339 static u8 state_to_phys_state(enum ib_port_state state)
340 {
341 return state == IB_PORT_ACTIVE ? 5 : 3;
342 }
343
344 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
345 struct ib_port_attr *props, int netw_view)
346 {
347
348 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
349 struct mlx4_ib_iboe *iboe = &mdev->iboe;
350 struct net_device *ndev;
351 enum ib_mtu tmp;
352 struct mlx4_cmd_mailbox *mailbox;
353 int err = 0;
354
355 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
356 if (IS_ERR(mailbox))
357 return PTR_ERR(mailbox);
358
359 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
360 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
361 MLX4_CMD_WRAPPED);
362 if (err)
363 goto out;
364
365 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ?
366 IB_WIDTH_4X : IB_WIDTH_1X;
367 props->active_speed = IB_SPEED_QDR;
368 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
369 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
370 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
371 props->pkey_tbl_len = 1;
372 props->max_mtu = IB_MTU_4096;
373 props->max_vl_num = 2;
374 props->state = IB_PORT_DOWN;
375 props->phys_state = state_to_phys_state(props->state);
376 props->active_mtu = IB_MTU_256;
377 spin_lock_bh(&iboe->lock);
378 ndev = iboe->netdevs[port - 1];
379 if (!ndev)
380 goto out_unlock;
381
382 tmp = iboe_get_mtu(ndev->mtu);
383 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
384
385 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
386 IB_PORT_ACTIVE : IB_PORT_DOWN;
387 props->phys_state = state_to_phys_state(props->state);
388 out_unlock:
389 spin_unlock_bh(&iboe->lock);
390 out:
391 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
392 return err;
393 }
394
395 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
396 struct ib_port_attr *props, int netw_view)
397 {
398 int err;
399
400 memset(props, 0, sizeof *props);
401
402 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
403 ib_link_query_port(ibdev, port, props, netw_view) :
404 eth_link_query_port(ibdev, port, props, netw_view);
405
406 return err;
407 }
408
409 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
410 struct ib_port_attr *props)
411 {
412 /* returns host view */
413 return __mlx4_ib_query_port(ibdev, port, props, 0);
414 }
415
416 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
417 union ib_gid *gid, int netw_view)
418 {
419 struct ib_smp *in_mad = NULL;
420 struct ib_smp *out_mad = NULL;
421 int err = -ENOMEM;
422 struct mlx4_ib_dev *dev = to_mdev(ibdev);
423 int clear = 0;
424 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
425
426 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
427 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
428 if (!in_mad || !out_mad)
429 goto out;
430
431 init_query_mad(in_mad);
432 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
433 in_mad->attr_mod = cpu_to_be32(port);
434
435 if (mlx4_is_mfunc(dev->dev) && netw_view)
436 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
437
438 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
439 if (err)
440 goto out;
441
442 memcpy(gid->raw, out_mad->data + 8, 8);
443
444 if (mlx4_is_mfunc(dev->dev) && !netw_view) {
445 if (index) {
446 /* For any index > 0, return the null guid */
447 err = 0;
448 clear = 1;
449 goto out;
450 }
451 }
452
453 init_query_mad(in_mad);
454 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
455 in_mad->attr_mod = cpu_to_be32(index / 8);
456
457 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
458 NULL, NULL, in_mad, out_mad);
459 if (err)
460 goto out;
461
462 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
463
464 out:
465 if (clear)
466 memset(gid->raw + 8, 0, 8);
467 kfree(in_mad);
468 kfree(out_mad);
469 return err;
470 }
471
472 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
473 union ib_gid *gid)
474 {
475 struct mlx4_ib_dev *dev = to_mdev(ibdev);
476
477 *gid = dev->iboe.gid_table[port - 1][index];
478
479 return 0;
480 }
481
482 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
483 union ib_gid *gid)
484 {
485 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
486 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
487 else
488 return iboe_query_gid(ibdev, port, index, gid);
489 }
490
491 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
492 u16 *pkey, int netw_view)
493 {
494 struct ib_smp *in_mad = NULL;
495 struct ib_smp *out_mad = NULL;
496 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
497 int err = -ENOMEM;
498
499 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
500 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
501 if (!in_mad || !out_mad)
502 goto out;
503
504 init_query_mad(in_mad);
505 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
506 in_mad->attr_mod = cpu_to_be32(index / 32);
507
508 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
509 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
510
511 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
512 in_mad, out_mad);
513 if (err)
514 goto out;
515
516 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
517
518 out:
519 kfree(in_mad);
520 kfree(out_mad);
521 return err;
522 }
523
524 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
525 {
526 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
527 }
528
529 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
530 struct ib_device_modify *props)
531 {
532 struct mlx4_cmd_mailbox *mailbox;
533 unsigned long flags;
534
535 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
536 return -EOPNOTSUPP;
537
538 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
539 return 0;
540
541 if (mlx4_is_slave(to_mdev(ibdev)->dev))
542 return -EOPNOTSUPP;
543
544 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
545 memcpy(ibdev->node_desc, props->node_desc, 64);
546 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
547
548 /*
549 * If possible, pass node desc to FW, so it can generate
550 * a 144 trap. If cmd fails, just ignore.
551 */
552 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
553 if (IS_ERR(mailbox))
554 return 0;
555
556 memcpy(mailbox->buf, props->node_desc, 64);
557 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
558 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
559
560 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
561
562 return 0;
563 }
564
565 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
566 u32 cap_mask)
567 {
568 struct mlx4_cmd_mailbox *mailbox;
569 int err;
570
571 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
572 if (IS_ERR(mailbox))
573 return PTR_ERR(mailbox);
574
575 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
576 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
577 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
578 } else {
579 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
580 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
581 }
582
583 err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
584 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
585
586 mlx4_free_cmd_mailbox(dev->dev, mailbox);
587 return err;
588 }
589
590 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
591 struct ib_port_modify *props)
592 {
593 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
594 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
595 struct ib_port_attr attr;
596 u32 cap_mask;
597 int err;
598
599 /* return OK if this is RoCE. CM calls ib_modify_port() regardless
600 * of whether port link layer is ETH or IB. For ETH ports, qkey
601 * violations and port capabilities are not meaningful.
602 */
603 if (is_eth)
604 return 0;
605
606 mutex_lock(&mdev->cap_mask_mutex);
607
608 err = mlx4_ib_query_port(ibdev, port, &attr);
609 if (err)
610 goto out;
611
612 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
613 ~props->clr_port_cap_mask;
614
615 err = mlx4_ib_SET_PORT(mdev, port,
616 !!(mask & IB_PORT_RESET_QKEY_CNTR),
617 cap_mask);
618
619 out:
620 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
621 return err;
622 }
623
624 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
625 struct ib_udata *udata)
626 {
627 struct mlx4_ib_dev *dev = to_mdev(ibdev);
628 struct mlx4_ib_ucontext *context;
629 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
630 struct mlx4_ib_alloc_ucontext_resp resp;
631 int err;
632
633 if (!dev->ib_active)
634 return ERR_PTR(-EAGAIN);
635
636 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
637 resp_v3.qp_tab_size = dev->dev->caps.num_qps;
638 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size;
639 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
640 } else {
641 resp.dev_caps = dev->dev->caps.userspace_caps;
642 resp.qp_tab_size = dev->dev->caps.num_qps;
643 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
644 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
645 resp.cqe_size = dev->dev->caps.cqe_size;
646 }
647
648 context = kmalloc(sizeof *context, GFP_KERNEL);
649 if (!context)
650 return ERR_PTR(-ENOMEM);
651
652 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
653 if (err) {
654 kfree(context);
655 return ERR_PTR(err);
656 }
657
658 INIT_LIST_HEAD(&context->db_page_list);
659 mutex_init(&context->db_page_mutex);
660
661 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
662 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
663 else
664 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
665
666 if (err) {
667 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
668 kfree(context);
669 return ERR_PTR(-EFAULT);
670 }
671
672 return &context->ibucontext;
673 }
674
675 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
676 {
677 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
678
679 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
680 kfree(context);
681
682 return 0;
683 }
684
685 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
686 {
687 struct mlx4_ib_dev *dev = to_mdev(context->device);
688
689 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
690 return -EINVAL;
691
692 if (vma->vm_pgoff == 0) {
693 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
694
695 if (io_remap_pfn_range(vma, vma->vm_start,
696 to_mucontext(context)->uar.pfn,
697 PAGE_SIZE, vma->vm_page_prot))
698 return -EAGAIN;
699 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
700 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
701
702 if (io_remap_pfn_range(vma, vma->vm_start,
703 to_mucontext(context)->uar.pfn +
704 dev->dev->caps.num_uars,
705 PAGE_SIZE, vma->vm_page_prot))
706 return -EAGAIN;
707 } else
708 return -EINVAL;
709
710 return 0;
711 }
712
713 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
714 struct ib_ucontext *context,
715 struct ib_udata *udata)
716 {
717 struct mlx4_ib_pd *pd;
718 int err;
719
720 pd = kmalloc(sizeof *pd, GFP_KERNEL);
721 if (!pd)
722 return ERR_PTR(-ENOMEM);
723
724 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
725 if (err) {
726 kfree(pd);
727 return ERR_PTR(err);
728 }
729
730 if (context)
731 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
732 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
733 kfree(pd);
734 return ERR_PTR(-EFAULT);
735 }
736
737 return &pd->ibpd;
738 }
739
740 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
741 {
742 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
743 kfree(pd);
744
745 return 0;
746 }
747
748 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
749 struct ib_ucontext *context,
750 struct ib_udata *udata)
751 {
752 struct mlx4_ib_xrcd *xrcd;
753 int err;
754
755 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
756 return ERR_PTR(-ENOSYS);
757
758 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
759 if (!xrcd)
760 return ERR_PTR(-ENOMEM);
761
762 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
763 if (err)
764 goto err1;
765
766 xrcd->pd = ib_alloc_pd(ibdev);
767 if (IS_ERR(xrcd->pd)) {
768 err = PTR_ERR(xrcd->pd);
769 goto err2;
770 }
771
772 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
773 if (IS_ERR(xrcd->cq)) {
774 err = PTR_ERR(xrcd->cq);
775 goto err3;
776 }
777
778 return &xrcd->ibxrcd;
779
780 err3:
781 ib_dealloc_pd(xrcd->pd);
782 err2:
783 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
784 err1:
785 kfree(xrcd);
786 return ERR_PTR(err);
787 }
788
789 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
790 {
791 ib_destroy_cq(to_mxrcd(xrcd)->cq);
792 ib_dealloc_pd(to_mxrcd(xrcd)->pd);
793 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
794 kfree(xrcd);
795
796 return 0;
797 }
798
799 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
800 {
801 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
802 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
803 struct mlx4_ib_gid_entry *ge;
804
805 ge = kzalloc(sizeof *ge, GFP_KERNEL);
806 if (!ge)
807 return -ENOMEM;
808
809 ge->gid = *gid;
810 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
811 ge->port = mqp->port;
812 ge->added = 1;
813 }
814
815 mutex_lock(&mqp->mutex);
816 list_add_tail(&ge->list, &mqp->gid_list);
817 mutex_unlock(&mqp->mutex);
818
819 return 0;
820 }
821
822 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
823 union ib_gid *gid)
824 {
825 struct net_device *ndev;
826 int ret = 0;
827
828 if (!mqp->port)
829 return 0;
830
831 spin_lock_bh(&mdev->iboe.lock);
832 ndev = mdev->iboe.netdevs[mqp->port - 1];
833 if (ndev)
834 dev_hold(ndev);
835 spin_unlock_bh(&mdev->iboe.lock);
836
837 if (ndev) {
838 ret = 1;
839 dev_put(ndev);
840 }
841
842 return ret;
843 }
844
845 struct mlx4_ib_steering {
846 struct list_head list;
847 u64 reg_id;
848 union ib_gid gid;
849 };
850
851 static int parse_flow_attr(struct mlx4_dev *dev,
852 u32 qp_num,
853 union ib_flow_spec *ib_spec,
854 struct _rule_hw *mlx4_spec)
855 {
856 enum mlx4_net_trans_rule_id type;
857
858 switch (ib_spec->type) {
859 case IB_FLOW_SPEC_ETH:
860 type = MLX4_NET_TRANS_RULE_ID_ETH;
861 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
862 ETH_ALEN);
863 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
864 ETH_ALEN);
865 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
866 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
867 break;
868 case IB_FLOW_SPEC_IB:
869 type = MLX4_NET_TRANS_RULE_ID_IB;
870 mlx4_spec->ib.l3_qpn =
871 cpu_to_be32(qp_num);
872 mlx4_spec->ib.qpn_mask =
873 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
874 break;
875
876
877 case IB_FLOW_SPEC_IPV4:
878 type = MLX4_NET_TRANS_RULE_ID_IPV4;
879 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
880 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
881 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
882 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
883 break;
884
885 case IB_FLOW_SPEC_TCP:
886 case IB_FLOW_SPEC_UDP:
887 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
888 MLX4_NET_TRANS_RULE_ID_TCP :
889 MLX4_NET_TRANS_RULE_ID_UDP;
890 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
891 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
892 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
893 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
894 break;
895
896 default:
897 return -EINVAL;
898 }
899 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
900 mlx4_hw_rule_sz(dev, type) < 0)
901 return -EINVAL;
902 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
903 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
904 return mlx4_hw_rule_sz(dev, type);
905 }
906
907 struct default_rules {
908 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
909 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
910 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
911 __u8 link_layer;
912 };
913 static const struct default_rules default_table[] = {
914 {
915 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
916 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
917 .rules_create_list = {IB_FLOW_SPEC_IB},
918 .link_layer = IB_LINK_LAYER_INFINIBAND
919 }
920 };
921
922 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
923 struct ib_flow_attr *flow_attr)
924 {
925 int i, j, k;
926 void *ib_flow;
927 const struct default_rules *pdefault_rules = default_table;
928 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
929
930 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
931 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
932 memset(&field_types, 0, sizeof(field_types));
933
934 if (link_layer != pdefault_rules->link_layer)
935 continue;
936
937 ib_flow = flow_attr + 1;
938 /* we assume the specs are sorted */
939 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
940 j < flow_attr->num_of_specs; k++) {
941 union ib_flow_spec *current_flow =
942 (union ib_flow_spec *)ib_flow;
943
944 /* same layer but different type */
945 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
946 (pdefault_rules->mandatory_fields[k] &
947 IB_FLOW_SPEC_LAYER_MASK)) &&
948 (current_flow->type !=
949 pdefault_rules->mandatory_fields[k]))
950 goto out;
951
952 /* same layer, try match next one */
953 if (current_flow->type ==
954 pdefault_rules->mandatory_fields[k]) {
955 j++;
956 ib_flow +=
957 ((union ib_flow_spec *)ib_flow)->size;
958 }
959 }
960
961 ib_flow = flow_attr + 1;
962 for (j = 0; j < flow_attr->num_of_specs;
963 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
964 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
965 /* same layer and same type */
966 if (((union ib_flow_spec *)ib_flow)->type ==
967 pdefault_rules->mandatory_not_fields[k])
968 goto out;
969
970 return i;
971 }
972 out:
973 return -1;
974 }
975
976 static int __mlx4_ib_create_default_rules(
977 struct mlx4_ib_dev *mdev,
978 struct ib_qp *qp,
979 const struct default_rules *pdefault_rules,
980 struct _rule_hw *mlx4_spec) {
981 int size = 0;
982 int i;
983
984 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
985 int ret;
986 union ib_flow_spec ib_spec;
987 switch (pdefault_rules->rules_create_list[i]) {
988 case 0:
989 /* no rule */
990 continue;
991 case IB_FLOW_SPEC_IB:
992 ib_spec.type = IB_FLOW_SPEC_IB;
993 ib_spec.size = sizeof(struct ib_flow_spec_ib);
994
995 break;
996 default:
997 /* invalid rule */
998 return -EINVAL;
999 }
1000 /* We must put empty rule, qpn is being ignored */
1001 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1002 mlx4_spec);
1003 if (ret < 0) {
1004 pr_info("invalid parsing\n");
1005 return -EINVAL;
1006 }
1007
1008 mlx4_spec = (void *)mlx4_spec + ret;
1009 size += ret;
1010 }
1011 return size;
1012 }
1013
1014 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1015 int domain,
1016 enum mlx4_net_trans_promisc_mode flow_type,
1017 u64 *reg_id)
1018 {
1019 int ret, i;
1020 int size = 0;
1021 void *ib_flow;
1022 struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1023 struct mlx4_cmd_mailbox *mailbox;
1024 struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1025 int default_flow;
1026
1027 static const u16 __mlx4_domain[] = {
1028 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1029 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1030 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1031 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1032 };
1033
1034 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1035 pr_err("Invalid priority value %d\n", flow_attr->priority);
1036 return -EINVAL;
1037 }
1038
1039 if (domain >= IB_FLOW_DOMAIN_NUM) {
1040 pr_err("Invalid domain value %d\n", domain);
1041 return -EINVAL;
1042 }
1043
1044 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1045 return -EINVAL;
1046
1047 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1048 if (IS_ERR(mailbox))
1049 return PTR_ERR(mailbox);
1050 ctrl = mailbox->buf;
1051
1052 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1053 flow_attr->priority);
1054 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1055 ctrl->port = flow_attr->port;
1056 ctrl->qpn = cpu_to_be32(qp->qp_num);
1057
1058 ib_flow = flow_attr + 1;
1059 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1060 /* Add default flows */
1061 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1062 if (default_flow >= 0) {
1063 ret = __mlx4_ib_create_default_rules(
1064 mdev, qp, default_table + default_flow,
1065 mailbox->buf + size);
1066 if (ret < 0) {
1067 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1068 return -EINVAL;
1069 }
1070 size += ret;
1071 }
1072 for (i = 0; i < flow_attr->num_of_specs; i++) {
1073 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1074 mailbox->buf + size);
1075 if (ret < 0) {
1076 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1077 return -EINVAL;
1078 }
1079 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1080 size += ret;
1081 }
1082
1083 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1084 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1085 MLX4_CMD_NATIVE);
1086 if (ret == -ENOMEM)
1087 pr_err("mcg table is full. Fail to register network rule.\n");
1088 else if (ret == -ENXIO)
1089 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1090 else if (ret)
1091 pr_err("Invalid argumant. Fail to register network rule.\n");
1092
1093 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1094 return ret;
1095 }
1096
1097 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1098 {
1099 int err;
1100 err = mlx4_cmd(dev, reg_id, 0, 0,
1101 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1102 MLX4_CMD_NATIVE);
1103 if (err)
1104 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1105 reg_id);
1106 return err;
1107 }
1108
1109 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1110 u64 *reg_id)
1111 {
1112 void *ib_flow;
1113 union ib_flow_spec *ib_spec;
1114 struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1115 int err = 0;
1116
1117 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1118 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1119 return 0; /* do nothing */
1120
1121 ib_flow = flow_attr + 1;
1122 ib_spec = (union ib_flow_spec *)ib_flow;
1123
1124 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1125 return 0; /* do nothing */
1126
1127 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1128 flow_attr->port, qp->qp_num,
1129 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1130 reg_id);
1131 return err;
1132 }
1133
1134 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1135 struct ib_flow_attr *flow_attr,
1136 int domain)
1137 {
1138 int err = 0, i = 0;
1139 struct mlx4_ib_flow *mflow;
1140 enum mlx4_net_trans_promisc_mode type[2];
1141
1142 memset(type, 0, sizeof(type));
1143
1144 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1145 if (!mflow) {
1146 err = -ENOMEM;
1147 goto err_free;
1148 }
1149
1150 switch (flow_attr->type) {
1151 case IB_FLOW_ATTR_NORMAL:
1152 type[0] = MLX4_FS_REGULAR;
1153 break;
1154
1155 case IB_FLOW_ATTR_ALL_DEFAULT:
1156 type[0] = MLX4_FS_ALL_DEFAULT;
1157 break;
1158
1159 case IB_FLOW_ATTR_MC_DEFAULT:
1160 type[0] = MLX4_FS_MC_DEFAULT;
1161 break;
1162
1163 case IB_FLOW_ATTR_SNIFFER:
1164 type[0] = MLX4_FS_UC_SNIFFER;
1165 type[1] = MLX4_FS_MC_SNIFFER;
1166 break;
1167
1168 default:
1169 err = -EINVAL;
1170 goto err_free;
1171 }
1172
1173 while (i < ARRAY_SIZE(type) && type[i]) {
1174 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1175 &mflow->reg_id[i]);
1176 if (err)
1177 goto err_create_flow;
1178 i++;
1179 }
1180
1181 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1182 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, &mflow->reg_id[i]);
1183 if (err)
1184 goto err_create_flow;
1185 i++;
1186 }
1187
1188 return &mflow->ibflow;
1189
1190 err_create_flow:
1191 while (i) {
1192 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, mflow->reg_id[i]);
1193 i--;
1194 }
1195 err_free:
1196 kfree(mflow);
1197 return ERR_PTR(err);
1198 }
1199
1200 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1201 {
1202 int err, ret = 0;
1203 int i = 0;
1204 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1205 struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1206
1207 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) {
1208 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]);
1209 if (err)
1210 ret = err;
1211 i++;
1212 }
1213
1214 kfree(mflow);
1215 return ret;
1216 }
1217
1218 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1219 {
1220 int err;
1221 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1222 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1223 u64 reg_id;
1224 struct mlx4_ib_steering *ib_steering = NULL;
1225 enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
1226 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
1227
1228 if (mdev->dev->caps.steering_mode ==
1229 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1230 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1231 if (!ib_steering)
1232 return -ENOMEM;
1233 }
1234
1235 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1236 !!(mqp->flags &
1237 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1238 prot, &reg_id);
1239 if (err)
1240 goto err_malloc;
1241
1242 err = add_gid_entry(ibqp, gid);
1243 if (err)
1244 goto err_add;
1245
1246 if (ib_steering) {
1247 memcpy(ib_steering->gid.raw, gid->raw, 16);
1248 ib_steering->reg_id = reg_id;
1249 mutex_lock(&mqp->mutex);
1250 list_add(&ib_steering->list, &mqp->steering_rules);
1251 mutex_unlock(&mqp->mutex);
1252 }
1253 return 0;
1254
1255 err_add:
1256 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1257 prot, reg_id);
1258 err_malloc:
1259 kfree(ib_steering);
1260
1261 return err;
1262 }
1263
1264 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1265 {
1266 struct mlx4_ib_gid_entry *ge;
1267 struct mlx4_ib_gid_entry *tmp;
1268 struct mlx4_ib_gid_entry *ret = NULL;
1269
1270 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1271 if (!memcmp(raw, ge->gid.raw, 16)) {
1272 ret = ge;
1273 break;
1274 }
1275 }
1276
1277 return ret;
1278 }
1279
1280 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1281 {
1282 int err;
1283 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1284 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1285 struct net_device *ndev;
1286 struct mlx4_ib_gid_entry *ge;
1287 u64 reg_id = 0;
1288 enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
1289 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
1290
1291 if (mdev->dev->caps.steering_mode ==
1292 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1293 struct mlx4_ib_steering *ib_steering;
1294
1295 mutex_lock(&mqp->mutex);
1296 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1297 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1298 list_del(&ib_steering->list);
1299 break;
1300 }
1301 }
1302 mutex_unlock(&mqp->mutex);
1303 if (&ib_steering->list == &mqp->steering_rules) {
1304 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1305 return -EINVAL;
1306 }
1307 reg_id = ib_steering->reg_id;
1308 kfree(ib_steering);
1309 }
1310
1311 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1312 prot, reg_id);
1313 if (err)
1314 return err;
1315
1316 mutex_lock(&mqp->mutex);
1317 ge = find_gid_entry(mqp, gid->raw);
1318 if (ge) {
1319 spin_lock_bh(&mdev->iboe.lock);
1320 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1321 if (ndev)
1322 dev_hold(ndev);
1323 spin_unlock_bh(&mdev->iboe.lock);
1324 if (ndev)
1325 dev_put(ndev);
1326 list_del(&ge->list);
1327 kfree(ge);
1328 } else
1329 pr_warn("could not find mgid entry\n");
1330
1331 mutex_unlock(&mqp->mutex);
1332
1333 return 0;
1334 }
1335
1336 static int init_node_data(struct mlx4_ib_dev *dev)
1337 {
1338 struct ib_smp *in_mad = NULL;
1339 struct ib_smp *out_mad = NULL;
1340 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1341 int err = -ENOMEM;
1342
1343 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1344 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1345 if (!in_mad || !out_mad)
1346 goto out;
1347
1348 init_query_mad(in_mad);
1349 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1350 if (mlx4_is_master(dev->dev))
1351 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1352
1353 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1354 if (err)
1355 goto out;
1356
1357 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1358
1359 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1360
1361 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1362 if (err)
1363 goto out;
1364
1365 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1366 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1367
1368 out:
1369 kfree(in_mad);
1370 kfree(out_mad);
1371 return err;
1372 }
1373
1374 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1375 char *buf)
1376 {
1377 struct mlx4_ib_dev *dev =
1378 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1379 return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
1380 }
1381
1382 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1383 char *buf)
1384 {
1385 struct mlx4_ib_dev *dev =
1386 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1387 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
1388 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
1389 (int) dev->dev->caps.fw_ver & 0xffff);
1390 }
1391
1392 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1393 char *buf)
1394 {
1395 struct mlx4_ib_dev *dev =
1396 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1397 return sprintf(buf, "%x\n", dev->dev->rev_id);
1398 }
1399
1400 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1401 char *buf)
1402 {
1403 struct mlx4_ib_dev *dev =
1404 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1405 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
1406 dev->dev->board_id);
1407 }
1408
1409 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1410 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1411 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1412 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1413
1414 static struct device_attribute *mlx4_class_attributes[] = {
1415 &dev_attr_hw_rev,
1416 &dev_attr_fw_ver,
1417 &dev_attr_hca_type,
1418 &dev_attr_board_id
1419 };
1420
1421 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id,
1422 struct net_device *dev)
1423 {
1424 memcpy(eui, dev->dev_addr, 3);
1425 memcpy(eui + 5, dev->dev_addr + 3, 3);
1426 if (vlan_id < 0x1000) {
1427 eui[3] = vlan_id >> 8;
1428 eui[4] = vlan_id & 0xff;
1429 } else {
1430 eui[3] = 0xff;
1431 eui[4] = 0xfe;
1432 }
1433 eui[0] ^= 2;
1434 }
1435
1436 static void update_gids_task(struct work_struct *work)
1437 {
1438 struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
1439 struct mlx4_cmd_mailbox *mailbox;
1440 union ib_gid *gids;
1441 int err;
1442 struct mlx4_dev *dev = gw->dev->dev;
1443
1444 if (!gw->dev->ib_active)
1445 return;
1446
1447 mailbox = mlx4_alloc_cmd_mailbox(dev);
1448 if (IS_ERR(mailbox)) {
1449 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
1450 return;
1451 }
1452
1453 gids = mailbox->buf;
1454 memcpy(gids, gw->gids, sizeof gw->gids);
1455
1456 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1457 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1458 MLX4_CMD_WRAPPED);
1459 if (err)
1460 pr_warn("set port command failed\n");
1461 else
1462 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
1463
1464 mlx4_free_cmd_mailbox(dev, mailbox);
1465 kfree(gw);
1466 }
1467
1468 static void reset_gids_task(struct work_struct *work)
1469 {
1470 struct update_gid_work *gw =
1471 container_of(work, struct update_gid_work, work);
1472 struct mlx4_cmd_mailbox *mailbox;
1473 union ib_gid *gids;
1474 int err;
1475 struct mlx4_dev *dev = gw->dev->dev;
1476
1477 if (!gw->dev->ib_active)
1478 return;
1479
1480 mailbox = mlx4_alloc_cmd_mailbox(dev);
1481 if (IS_ERR(mailbox)) {
1482 pr_warn("reset gid table failed\n");
1483 goto free;
1484 }
1485
1486 gids = mailbox->buf;
1487 memcpy(gids, gw->gids, sizeof(gw->gids));
1488
1489 if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) ==
1490 IB_LINK_LAYER_ETHERNET) {
1491 err = mlx4_cmd(dev, mailbox->dma,
1492 MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1493 1, MLX4_CMD_SET_PORT,
1494 MLX4_CMD_TIME_CLASS_B,
1495 MLX4_CMD_WRAPPED);
1496 if (err)
1497 pr_warn(KERN_WARNING
1498 "set port %d command failed\n", gw->port);
1499 }
1500
1501 mlx4_free_cmd_mailbox(dev, mailbox);
1502 free:
1503 kfree(gw);
1504 }
1505
1506 static int update_gid_table(struct mlx4_ib_dev *dev, int port,
1507 union ib_gid *gid, int clear,
1508 int default_gid)
1509 {
1510 struct update_gid_work *work;
1511 int i;
1512 int need_update = 0;
1513 int free = -1;
1514 int found = -1;
1515 int max_gids;
1516
1517 if (default_gid) {
1518 free = 0;
1519 } else {
1520 max_gids = dev->dev->caps.gid_table_len[port];
1521 for (i = 1; i < max_gids; ++i) {
1522 if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid,
1523 sizeof(*gid)))
1524 found = i;
1525
1526 if (clear) {
1527 if (found >= 0) {
1528 need_update = 1;
1529 dev->iboe.gid_table[port - 1][found] =
1530 zgid;
1531 break;
1532 }
1533 } else {
1534 if (found >= 0)
1535 break;
1536
1537 if (free < 0 &&
1538 !memcmp(&dev->iboe.gid_table[port - 1][i],
1539 &zgid, sizeof(*gid)))
1540 free = i;
1541 }
1542 }
1543 }
1544
1545 if (found == -1 && !clear && free >= 0) {
1546 dev->iboe.gid_table[port - 1][free] = *gid;
1547 need_update = 1;
1548 }
1549
1550 if (!need_update)
1551 return 0;
1552
1553 work = kzalloc(sizeof(*work), GFP_ATOMIC);
1554 if (!work)
1555 return -ENOMEM;
1556
1557 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids));
1558 INIT_WORK(&work->work, update_gids_task);
1559 work->port = port;
1560 work->dev = dev;
1561 queue_work(wq, &work->work);
1562
1563 return 0;
1564 }
1565
1566 static void mlx4_make_default_gid(struct net_device *dev, union ib_gid *gid)
1567 {
1568 gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1569 mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev);
1570 }
1571
1572
1573 static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port)
1574 {
1575 struct update_gid_work *work;
1576
1577 work = kzalloc(sizeof(*work), GFP_ATOMIC);
1578 if (!work)
1579 return -ENOMEM;
1580
1581 memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids));
1582 memset(work->gids, 0, sizeof(work->gids));
1583 INIT_WORK(&work->work, reset_gids_task);
1584 work->dev = dev;
1585 work->port = port;
1586 queue_work(wq, &work->work);
1587 return 0;
1588 }
1589
1590 static int mlx4_ib_addr_event(int event, struct net_device *event_netdev,
1591 struct mlx4_ib_dev *ibdev, union ib_gid *gid)
1592 {
1593 struct mlx4_ib_iboe *iboe;
1594 int port = 0;
1595 struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ?
1596 rdma_vlan_dev_real_dev(event_netdev) :
1597 event_netdev;
1598 union ib_gid default_gid;
1599
1600 mlx4_make_default_gid(real_dev, &default_gid);
1601
1602 if (!memcmp(gid, &default_gid, sizeof(*gid)))
1603 return 0;
1604
1605 if (event != NETDEV_DOWN && event != NETDEV_UP)
1606 return 0;
1607
1608 if ((real_dev != event_netdev) &&
1609 (event == NETDEV_DOWN) &&
1610 rdma_link_local_addr((struct in6_addr *)gid))
1611 return 0;
1612
1613 iboe = &ibdev->iboe;
1614 spin_lock_bh(&iboe->lock);
1615
1616 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1617 if ((netif_is_bond_master(real_dev) &&
1618 (real_dev == iboe->masters[port - 1])) ||
1619 (!netif_is_bond_master(real_dev) &&
1620 (real_dev == iboe->netdevs[port - 1])))
1621 update_gid_table(ibdev, port, gid,
1622 event == NETDEV_DOWN, 0);
1623
1624 spin_unlock_bh(&iboe->lock);
1625 return 0;
1626
1627 }
1628
1629 static u8 mlx4_ib_get_dev_port(struct net_device *dev,
1630 struct mlx4_ib_dev *ibdev)
1631 {
1632 u8 port = 0;
1633 struct mlx4_ib_iboe *iboe;
1634 struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ?
1635 rdma_vlan_dev_real_dev(dev) : dev;
1636
1637 iboe = &ibdev->iboe;
1638
1639 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1640 if ((netif_is_bond_master(real_dev) &&
1641 (real_dev == iboe->masters[port - 1])) ||
1642 (!netif_is_bond_master(real_dev) &&
1643 (real_dev == iboe->netdevs[port - 1])))
1644 break;
1645
1646 if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1647 return 0;
1648 else
1649 return port;
1650 }
1651
1652 static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event,
1653 void *ptr)
1654 {
1655 struct mlx4_ib_dev *ibdev;
1656 struct in_ifaddr *ifa = ptr;
1657 union ib_gid gid;
1658 struct net_device *event_netdev = ifa->ifa_dev->dev;
1659
1660 ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
1661
1662 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet);
1663
1664 mlx4_ib_addr_event(event, event_netdev, ibdev, &gid);
1665 return NOTIFY_DONE;
1666 }
1667
1668 #if IS_ENABLED(CONFIG_IPV6)
1669 static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event,
1670 void *ptr)
1671 {
1672 struct mlx4_ib_dev *ibdev;
1673 struct inet6_ifaddr *ifa = ptr;
1674 union ib_gid *gid = (union ib_gid *)&ifa->addr;
1675 struct net_device *event_netdev = ifa->idev->dev;
1676
1677 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6);
1678
1679 mlx4_ib_addr_event(event, event_netdev, ibdev, gid);
1680 return NOTIFY_DONE;
1681 }
1682 #endif
1683
1684 #define MLX4_IB_INVALID_MAC ((u64)-1)
1685 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
1686 struct net_device *dev,
1687 int port)
1688 {
1689 u64 new_smac = 0;
1690 u64 release_mac = MLX4_IB_INVALID_MAC;
1691 struct mlx4_ib_qp *qp;
1692
1693 read_lock(&dev_base_lock);
1694 new_smac = mlx4_mac_to_u64(dev->dev_addr);
1695 read_unlock(&dev_base_lock);
1696
1697 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
1698
1699 /* no need for update QP1 and mac registration in non-SRIOV */
1700 if (!mlx4_is_mfunc(ibdev->dev))
1701 return;
1702
1703 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
1704 qp = ibdev->qp1_proxy[port - 1];
1705 if (qp) {
1706 int new_smac_index;
1707 u64 old_smac;
1708 struct mlx4_update_qp_params update_params;
1709
1710 mutex_lock(&qp->mutex);
1711 old_smac = qp->pri.smac;
1712 if (new_smac == old_smac)
1713 goto unlock;
1714
1715 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
1716
1717 if (new_smac_index < 0)
1718 goto unlock;
1719
1720 update_params.smac_index = new_smac_index;
1721 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
1722 &update_params)) {
1723 release_mac = new_smac;
1724 goto unlock;
1725 }
1726 /* if old port was zero, no mac was yet registered for this QP */
1727 if (qp->pri.smac_port)
1728 release_mac = old_smac;
1729 qp->pri.smac = new_smac;
1730 qp->pri.smac_port = port;
1731 qp->pri.smac_index = new_smac_index;
1732 }
1733
1734 unlock:
1735 if (release_mac != MLX4_IB_INVALID_MAC)
1736 mlx4_unregister_mac(ibdev->dev, port, release_mac);
1737 if (qp)
1738 mutex_unlock(&qp->mutex);
1739 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
1740 }
1741
1742 static void mlx4_ib_get_dev_addr(struct net_device *dev,
1743 struct mlx4_ib_dev *ibdev, u8 port)
1744 {
1745 struct in_device *in_dev;
1746 #if IS_ENABLED(CONFIG_IPV6)
1747 struct inet6_dev *in6_dev;
1748 union ib_gid *pgid;
1749 struct inet6_ifaddr *ifp;
1750 union ib_gid default_gid;
1751 #endif
1752 union ib_gid gid;
1753
1754
1755 if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1756 return;
1757
1758 /* IPv4 gids */
1759 in_dev = in_dev_get(dev);
1760 if (in_dev) {
1761 for_ifa(in_dev) {
1762 /*ifa->ifa_address;*/
1763 ipv6_addr_set_v4mapped(ifa->ifa_address,
1764 (struct in6_addr *)&gid);
1765 update_gid_table(ibdev, port, &gid, 0, 0);
1766 }
1767 endfor_ifa(in_dev);
1768 in_dev_put(in_dev);
1769 }
1770 #if IS_ENABLED(CONFIG_IPV6)
1771 mlx4_make_default_gid(dev, &default_gid);
1772 /* IPv6 gids */
1773 in6_dev = in6_dev_get(dev);
1774 if (in6_dev) {
1775 read_lock_bh(&in6_dev->lock);
1776 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) {
1777 pgid = (union ib_gid *)&ifp->addr;
1778 if (!memcmp(pgid, &default_gid, sizeof(*pgid)))
1779 continue;
1780 update_gid_table(ibdev, port, pgid, 0, 0);
1781 }
1782 read_unlock_bh(&in6_dev->lock);
1783 in6_dev_put(in6_dev);
1784 }
1785 #endif
1786 }
1787
1788 static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev,
1789 struct net_device *dev, u8 port)
1790 {
1791 union ib_gid gid;
1792 mlx4_make_default_gid(dev, &gid);
1793 update_gid_table(ibdev, port, &gid, 0, 1);
1794 }
1795
1796 static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev)
1797 {
1798 struct net_device *dev;
1799 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
1800 int i;
1801 int err = 0;
1802
1803 for (i = 1; i <= ibdev->num_ports; ++i) {
1804 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) ==
1805 IB_LINK_LAYER_ETHERNET) {
1806 err = reset_gid_table(ibdev, i);
1807 if (err)
1808 goto out;
1809 }
1810 }
1811
1812 read_lock(&dev_base_lock);
1813 spin_lock_bh(&iboe->lock);
1814
1815 for_each_netdev(&init_net, dev) {
1816 u8 port = mlx4_ib_get_dev_port(dev, ibdev);
1817 /* port will be non-zero only for ETH ports */
1818 if (port) {
1819 mlx4_ib_set_default_gid(ibdev, dev, port);
1820 mlx4_ib_get_dev_addr(dev, ibdev, port);
1821 }
1822 }
1823
1824 spin_unlock_bh(&iboe->lock);
1825 read_unlock(&dev_base_lock);
1826 out:
1827 return err;
1828 }
1829
1830 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
1831 struct net_device *dev,
1832 unsigned long event)
1833
1834 {
1835 struct mlx4_ib_iboe *iboe;
1836 int update_qps_port = -1;
1837 int port;
1838
1839 iboe = &ibdev->iboe;
1840
1841 spin_lock_bh(&iboe->lock);
1842 mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1843 enum ib_port_state port_state = IB_PORT_NOP;
1844 struct net_device *old_master = iboe->masters[port - 1];
1845 struct net_device *curr_netdev;
1846 struct net_device *curr_master;
1847
1848 iboe->netdevs[port - 1] =
1849 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1850 if (iboe->netdevs[port - 1])
1851 mlx4_ib_set_default_gid(ibdev,
1852 iboe->netdevs[port - 1], port);
1853 curr_netdev = iboe->netdevs[port - 1];
1854
1855 if (iboe->netdevs[port - 1] &&
1856 netif_is_bond_slave(iboe->netdevs[port - 1])) {
1857 iboe->masters[port - 1] = netdev_master_upper_dev_get(
1858 iboe->netdevs[port - 1]);
1859 } else {
1860 iboe->masters[port - 1] = NULL;
1861 }
1862 curr_master = iboe->masters[port - 1];
1863
1864 if (dev == iboe->netdevs[port - 1] &&
1865 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
1866 event == NETDEV_UP || event == NETDEV_CHANGE))
1867 update_qps_port = port;
1868
1869 if (curr_netdev) {
1870 port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ?
1871 IB_PORT_ACTIVE : IB_PORT_DOWN;
1872 mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1873 if (curr_master) {
1874 /* if using bonding/team and a slave port is down, we
1875 * don't want the bond IP based gids in the table since
1876 * flows that select port by gid may get the down port.
1877 */
1878 if (port_state == IB_PORT_DOWN) {
1879 reset_gid_table(ibdev, port);
1880 mlx4_ib_set_default_gid(ibdev,
1881 curr_netdev,
1882 port);
1883 } else {
1884 /* gids from the upper dev (bond/team)
1885 * should appear in port's gid table
1886 */
1887 mlx4_ib_get_dev_addr(curr_master,
1888 ibdev, port);
1889 }
1890 }
1891 /* if bonding is used it is possible that we add it to
1892 * masters only after IP address is assigned to the
1893 * net bonding interface.
1894 */
1895 if (curr_master && (old_master != curr_master)) {
1896 reset_gid_table(ibdev, port);
1897 mlx4_ib_set_default_gid(ibdev,
1898 curr_netdev, port);
1899 mlx4_ib_get_dev_addr(curr_master, ibdev, port);
1900 }
1901
1902 if (!curr_master && (old_master != curr_master)) {
1903 reset_gid_table(ibdev, port);
1904 mlx4_ib_set_default_gid(ibdev,
1905 curr_netdev, port);
1906 mlx4_ib_get_dev_addr(curr_netdev, ibdev, port);
1907 }
1908 } else {
1909 reset_gid_table(ibdev, port);
1910 }
1911 }
1912
1913 spin_unlock_bh(&iboe->lock);
1914
1915 if (update_qps_port > 0)
1916 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
1917 }
1918
1919 static int mlx4_ib_netdev_event(struct notifier_block *this,
1920 unsigned long event, void *ptr)
1921 {
1922 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1923 struct mlx4_ib_dev *ibdev;
1924
1925 if (!net_eq(dev_net(dev), &init_net))
1926 return NOTIFY_DONE;
1927
1928 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1929 mlx4_ib_scan_netdevs(ibdev, dev, event);
1930
1931 return NOTIFY_DONE;
1932 }
1933
1934 static void init_pkeys(struct mlx4_ib_dev *ibdev)
1935 {
1936 int port;
1937 int slave;
1938 int i;
1939
1940 if (mlx4_is_master(ibdev->dev)) {
1941 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) {
1942 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1943 for (i = 0;
1944 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1945 ++i) {
1946 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
1947 /* master has the identity virt2phys pkey mapping */
1948 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
1949 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
1950 mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
1951 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
1952 }
1953 }
1954 }
1955 /* initialize pkey cache */
1956 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1957 for (i = 0;
1958 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1959 ++i)
1960 ibdev->pkeys.phys_pkey_cache[port-1][i] =
1961 (i) ? 0 : 0xFFFF;
1962 }
1963 }
1964 }
1965
1966 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1967 {
1968 char name[80];
1969 int eq_per_port = 0;
1970 int added_eqs = 0;
1971 int total_eqs = 0;
1972 int i, j, eq;
1973
1974 /* Legacy mode or comp_pool is not large enough */
1975 if (dev->caps.comp_pool == 0 ||
1976 dev->caps.num_ports > dev->caps.comp_pool)
1977 return;
1978
1979 eq_per_port = dev->caps.comp_pool / dev->caps.num_ports;
1980
1981 /* Init eq table */
1982 added_eqs = 0;
1983 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
1984 added_eqs += eq_per_port;
1985
1986 total_eqs = dev->caps.num_comp_vectors + added_eqs;
1987
1988 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
1989 if (!ibdev->eq_table)
1990 return;
1991
1992 ibdev->eq_added = added_eqs;
1993
1994 eq = 0;
1995 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
1996 for (j = 0; j < eq_per_port; j++) {
1997 snprintf(name, sizeof(name), "mlx4-ib-%d-%d@%s",
1998 i, j, dev->pdev->bus->name);
1999 /* Set IRQ for specific name (per ring) */
2000 if (mlx4_assign_eq(dev, name, NULL,
2001 &ibdev->eq_table[eq])) {
2002 /* Use legacy (same as mlx4_en driver) */
2003 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
2004 ibdev->eq_table[eq] =
2005 (eq % dev->caps.num_comp_vectors);
2006 }
2007 eq++;
2008 }
2009 }
2010
2011 /* Fill the reset of the vector with legacy EQ */
2012 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
2013 ibdev->eq_table[eq++] = i;
2014
2015 /* Advertise the new number of EQs to clients */
2016 ibdev->ib_dev.num_comp_vectors = total_eqs;
2017 }
2018
2019 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2020 {
2021 int i;
2022
2023 /* no additional eqs were added */
2024 if (!ibdev->eq_table)
2025 return;
2026
2027 /* Reset the advertised EQ number */
2028 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
2029
2030 /* Free only the added eqs */
2031 for (i = 0; i < ibdev->eq_added; i++) {
2032 /* Don't free legacy eqs if used */
2033 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
2034 continue;
2035 mlx4_release_eq(dev, ibdev->eq_table[i]);
2036 }
2037
2038 kfree(ibdev->eq_table);
2039 }
2040
2041 static void *mlx4_ib_add(struct mlx4_dev *dev)
2042 {
2043 struct mlx4_ib_dev *ibdev;
2044 int num_ports = 0;
2045 int i, j;
2046 int err;
2047 struct mlx4_ib_iboe *iboe;
2048 int ib_num_ports = 0;
2049
2050 pr_info_once("%s", mlx4_ib_version);
2051
2052 num_ports = 0;
2053 mlx4_foreach_ib_transport_port(i, dev)
2054 num_ports++;
2055
2056 /* No point in registering a device with no ports... */
2057 if (num_ports == 0)
2058 return NULL;
2059
2060 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2061 if (!ibdev) {
2062 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
2063 return NULL;
2064 }
2065
2066 iboe = &ibdev->iboe;
2067
2068 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2069 goto err_dealloc;
2070
2071 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2072 goto err_pd;
2073
2074 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2075 PAGE_SIZE);
2076 if (!ibdev->uar_map)
2077 goto err_uar;
2078 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2079
2080 ibdev->dev = dev;
2081
2082 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2083 ibdev->ib_dev.owner = THIS_MODULE;
2084 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
2085 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
2086 ibdev->num_ports = num_ports;
2087 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports;
2088 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
2089 ibdev->ib_dev.dma_device = &dev->pdev->dev;
2090
2091 if (dev->caps.userspace_caps)
2092 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2093 else
2094 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2095
2096 ibdev->ib_dev.uverbs_cmd_mask =
2097 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
2098 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
2099 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
2100 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
2101 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
2102 (1ull << IB_USER_VERBS_CMD_REG_MR) |
2103 (1ull << IB_USER_VERBS_CMD_REREG_MR) |
2104 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
2105 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2106 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
2107 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
2108 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
2109 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
2110 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
2111 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
2112 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
2113 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
2114 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
2115 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
2116 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
2117 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
2118 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
2119 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
2120 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2121
2122 ibdev->ib_dev.query_device = mlx4_ib_query_device;
2123 ibdev->ib_dev.query_port = mlx4_ib_query_port;
2124 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
2125 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
2126 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
2127 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
2128 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
2129 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
2130 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
2131 ibdev->ib_dev.mmap = mlx4_ib_mmap;
2132 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
2133 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
2134 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
2135 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
2136 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
2137 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
2138 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
2139 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
2140 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
2141 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
2142 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
2143 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
2144 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
2145 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
2146 ibdev->ib_dev.post_send = mlx4_ib_post_send;
2147 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
2148 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
2149 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
2150 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
2151 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
2152 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
2153 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
2154 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
2155 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
2156 ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr;
2157 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
2158 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
2159 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
2160 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
2161 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
2162 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
2163 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
2164
2165 if (!mlx4_is_slave(ibdev->dev)) {
2166 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
2167 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
2168 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
2169 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
2170 }
2171
2172 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2173 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2174 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2175 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
2176 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2177
2178 ibdev->ib_dev.uverbs_cmd_mask |=
2179 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2180 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2181 }
2182
2183 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2184 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2185 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2186 ibdev->ib_dev.uverbs_cmd_mask |=
2187 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2188 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2189 }
2190
2191 if (check_flow_steering_support(dev)) {
2192 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2193 ibdev->ib_dev.create_flow = mlx4_ib_create_flow;
2194 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow;
2195
2196 ibdev->ib_dev.uverbs_ex_cmd_mask |=
2197 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2198 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2199 }
2200
2201 mlx4_ib_alloc_eqs(dev, ibdev);
2202
2203 spin_lock_init(&iboe->lock);
2204
2205 if (init_node_data(ibdev))
2206 goto err_map;
2207
2208 for (i = 0; i < ibdev->num_ports; ++i) {
2209 mutex_init(&ibdev->qp1_proxy_lock[i]);
2210 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2211 IB_LINK_LAYER_ETHERNET) {
2212 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
2213 if (err)
2214 ibdev->counters[i] = -1;
2215 } else {
2216 ibdev->counters[i] = -1;
2217 }
2218 }
2219
2220 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2221 ib_num_ports++;
2222
2223 spin_lock_init(&ibdev->sm_lock);
2224 mutex_init(&ibdev->cap_mask_mutex);
2225
2226 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2227 ib_num_ports) {
2228 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2229 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2230 MLX4_IB_UC_STEER_QPN_ALIGN,
2231 &ibdev->steer_qpn_base, 0);
2232 if (err)
2233 goto err_counter;
2234
2235 ibdev->ib_uc_qpns_bitmap =
2236 kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2237 sizeof(long),
2238 GFP_KERNEL);
2239 if (!ibdev->ib_uc_qpns_bitmap) {
2240 dev_err(&dev->pdev->dev, "bit map alloc failed\n");
2241 goto err_steer_qp_release;
2242 }
2243
2244 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2245
2246 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2247 dev, ibdev->steer_qpn_base,
2248 ibdev->steer_qpn_base +
2249 ibdev->steer_qpn_count - 1);
2250 if (err)
2251 goto err_steer_free_bitmap;
2252 }
2253
2254 for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2255 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2256
2257 if (ib_register_device(&ibdev->ib_dev, NULL))
2258 goto err_steer_free_bitmap;
2259
2260 if (mlx4_ib_mad_init(ibdev))
2261 goto err_reg;
2262
2263 if (mlx4_ib_init_sriov(ibdev))
2264 goto err_mad;
2265
2266 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) {
2267 if (!iboe->nb.notifier_call) {
2268 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2269 err = register_netdevice_notifier(&iboe->nb);
2270 if (err) {
2271 iboe->nb.notifier_call = NULL;
2272 goto err_notif;
2273 }
2274 }
2275 if (!iboe->nb_inet.notifier_call) {
2276 iboe->nb_inet.notifier_call = mlx4_ib_inet_event;
2277 err = register_inetaddr_notifier(&iboe->nb_inet);
2278 if (err) {
2279 iboe->nb_inet.notifier_call = NULL;
2280 goto err_notif;
2281 }
2282 }
2283 #if IS_ENABLED(CONFIG_IPV6)
2284 if (!iboe->nb_inet6.notifier_call) {
2285 iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event;
2286 err = register_inet6addr_notifier(&iboe->nb_inet6);
2287 if (err) {
2288 iboe->nb_inet6.notifier_call = NULL;
2289 goto err_notif;
2290 }
2291 }
2292 #endif
2293 if (mlx4_ib_init_gid_table(ibdev))
2294 goto err_notif;
2295 }
2296
2297 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2298 if (device_create_file(&ibdev->ib_dev.dev,
2299 mlx4_class_attributes[j]))
2300 goto err_notif;
2301 }
2302
2303 ibdev->ib_active = true;
2304
2305 if (mlx4_is_mfunc(ibdev->dev))
2306 init_pkeys(ibdev);
2307
2308 /* create paravirt contexts for any VFs which are active */
2309 if (mlx4_is_master(ibdev->dev)) {
2310 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2311 if (j == mlx4_master_func_num(ibdev->dev))
2312 continue;
2313 if (mlx4_is_slave_active(ibdev->dev, j))
2314 do_slave_init(ibdev, j, 1);
2315 }
2316 }
2317 return ibdev;
2318
2319 err_notif:
2320 if (ibdev->iboe.nb.notifier_call) {
2321 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2322 pr_warn("failure unregistering notifier\n");
2323 ibdev->iboe.nb.notifier_call = NULL;
2324 }
2325 if (ibdev->iboe.nb_inet.notifier_call) {
2326 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2327 pr_warn("failure unregistering notifier\n");
2328 ibdev->iboe.nb_inet.notifier_call = NULL;
2329 }
2330 #if IS_ENABLED(CONFIG_IPV6)
2331 if (ibdev->iboe.nb_inet6.notifier_call) {
2332 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2333 pr_warn("failure unregistering notifier\n");
2334 ibdev->iboe.nb_inet6.notifier_call = NULL;
2335 }
2336 #endif
2337 flush_workqueue(wq);
2338
2339 mlx4_ib_close_sriov(ibdev);
2340
2341 err_mad:
2342 mlx4_ib_mad_cleanup(ibdev);
2343
2344 err_reg:
2345 ib_unregister_device(&ibdev->ib_dev);
2346
2347 err_steer_free_bitmap:
2348 kfree(ibdev->ib_uc_qpns_bitmap);
2349
2350 err_steer_qp_release:
2351 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2352 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2353 ibdev->steer_qpn_count);
2354 err_counter:
2355 for (; i; --i)
2356 if (ibdev->counters[i - 1] != -1)
2357 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
2358
2359 err_map:
2360 iounmap(ibdev->uar_map);
2361
2362 err_uar:
2363 mlx4_uar_free(dev, &ibdev->priv_uar);
2364
2365 err_pd:
2366 mlx4_pd_free(dev, ibdev->priv_pdn);
2367
2368 err_dealloc:
2369 ib_dealloc_device(&ibdev->ib_dev);
2370
2371 return NULL;
2372 }
2373
2374 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2375 {
2376 int offset;
2377
2378 WARN_ON(!dev->ib_uc_qpns_bitmap);
2379
2380 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2381 dev->steer_qpn_count,
2382 get_count_order(count));
2383 if (offset < 0)
2384 return offset;
2385
2386 *qpn = dev->steer_qpn_base + offset;
2387 return 0;
2388 }
2389
2390 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2391 {
2392 if (!qpn ||
2393 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2394 return;
2395
2396 BUG_ON(qpn < dev->steer_qpn_base);
2397
2398 bitmap_release_region(dev->ib_uc_qpns_bitmap,
2399 qpn - dev->steer_qpn_base,
2400 get_count_order(count));
2401 }
2402
2403 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2404 int is_attach)
2405 {
2406 int err;
2407 size_t flow_size;
2408 struct ib_flow_attr *flow = NULL;
2409 struct ib_flow_spec_ib *ib_spec;
2410
2411 if (is_attach) {
2412 flow_size = sizeof(struct ib_flow_attr) +
2413 sizeof(struct ib_flow_spec_ib);
2414 flow = kzalloc(flow_size, GFP_KERNEL);
2415 if (!flow)
2416 return -ENOMEM;
2417 flow->port = mqp->port;
2418 flow->num_of_specs = 1;
2419 flow->size = flow_size;
2420 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2421 ib_spec->type = IB_FLOW_SPEC_IB;
2422 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2423 /* Add an empty rule for IB L2 */
2424 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2425
2426 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2427 IB_FLOW_DOMAIN_NIC,
2428 MLX4_FS_REGULAR,
2429 &mqp->reg_id);
2430 } else {
2431 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2432 }
2433 kfree(flow);
2434 return err;
2435 }
2436
2437 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2438 {
2439 struct mlx4_ib_dev *ibdev = ibdev_ptr;
2440 int p;
2441
2442 ibdev->ib_active = false;
2443 flush_workqueue(wq);
2444
2445 mlx4_ib_close_sriov(ibdev);
2446 mlx4_ib_mad_cleanup(ibdev);
2447 ib_unregister_device(&ibdev->ib_dev);
2448 if (ibdev->iboe.nb.notifier_call) {
2449 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2450 pr_warn("failure unregistering notifier\n");
2451 ibdev->iboe.nb.notifier_call = NULL;
2452 }
2453
2454 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2455 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2456 ibdev->steer_qpn_count);
2457 kfree(ibdev->ib_uc_qpns_bitmap);
2458 }
2459
2460 if (ibdev->iboe.nb_inet.notifier_call) {
2461 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2462 pr_warn("failure unregistering notifier\n");
2463 ibdev->iboe.nb_inet.notifier_call = NULL;
2464 }
2465 #if IS_ENABLED(CONFIG_IPV6)
2466 if (ibdev->iboe.nb_inet6.notifier_call) {
2467 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2468 pr_warn("failure unregistering notifier\n");
2469 ibdev->iboe.nb_inet6.notifier_call = NULL;
2470 }
2471 #endif
2472
2473 iounmap(ibdev->uar_map);
2474 for (p = 0; p < ibdev->num_ports; ++p)
2475 if (ibdev->counters[p] != -1)
2476 mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
2477 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2478 mlx4_CLOSE_PORT(dev, p);
2479
2480 mlx4_ib_free_eqs(dev, ibdev);
2481
2482 mlx4_uar_free(dev, &ibdev->priv_uar);
2483 mlx4_pd_free(dev, ibdev->priv_pdn);
2484 ib_dealloc_device(&ibdev->ib_dev);
2485 }
2486
2487 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2488 {
2489 struct mlx4_ib_demux_work **dm = NULL;
2490 struct mlx4_dev *dev = ibdev->dev;
2491 int i;
2492 unsigned long flags;
2493 struct mlx4_active_ports actv_ports;
2494 unsigned int ports;
2495 unsigned int first_port;
2496
2497 if (!mlx4_is_master(dev))
2498 return;
2499
2500 actv_ports = mlx4_get_active_ports(dev, slave);
2501 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2502 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2503
2504 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
2505 if (!dm) {
2506 pr_err("failed to allocate memory for tunneling qp update\n");
2507 goto out;
2508 }
2509
2510 for (i = 0; i < ports; i++) {
2511 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
2512 if (!dm[i]) {
2513 pr_err("failed to allocate memory for tunneling qp update work struct\n");
2514 for (i = 0; i < dev->caps.num_ports; i++) {
2515 if (dm[i])
2516 kfree(dm[i]);
2517 }
2518 goto out;
2519 }
2520 }
2521 /* initialize or tear down tunnel QPs for the slave */
2522 for (i = 0; i < ports; i++) {
2523 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
2524 dm[i]->port = first_port + i + 1;
2525 dm[i]->slave = slave;
2526 dm[i]->do_init = do_init;
2527 dm[i]->dev = ibdev;
2528 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
2529 if (!ibdev->sriov.is_going_down)
2530 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
2531 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2532 }
2533 out:
2534 kfree(dm);
2535 return;
2536 }
2537
2538 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2539 enum mlx4_dev_event event, unsigned long param)
2540 {
2541 struct ib_event ibev;
2542 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2543 struct mlx4_eqe *eqe = NULL;
2544 struct ib_event_work *ew;
2545 int p = 0;
2546
2547 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
2548 eqe = (struct mlx4_eqe *)param;
2549 else
2550 p = (int) param;
2551
2552 switch (event) {
2553 case MLX4_DEV_EVENT_PORT_UP:
2554 if (p > ibdev->num_ports)
2555 return;
2556 if (mlx4_is_master(dev) &&
2557 rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
2558 IB_LINK_LAYER_INFINIBAND) {
2559 mlx4_ib_invalidate_all_guid_record(ibdev, p);
2560 }
2561 ibev.event = IB_EVENT_PORT_ACTIVE;
2562 break;
2563
2564 case MLX4_DEV_EVENT_PORT_DOWN:
2565 if (p > ibdev->num_ports)
2566 return;
2567 ibev.event = IB_EVENT_PORT_ERR;
2568 break;
2569
2570 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2571 ibdev->ib_active = false;
2572 ibev.event = IB_EVENT_DEVICE_FATAL;
2573 break;
2574
2575 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
2576 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
2577 if (!ew) {
2578 pr_err("failed to allocate memory for events work\n");
2579 break;
2580 }
2581
2582 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
2583 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
2584 ew->ib_dev = ibdev;
2585 /* need to queue only for port owner, which uses GEN_EQE */
2586 if (mlx4_is_master(dev))
2587 queue_work(wq, &ew->work);
2588 else
2589 handle_port_mgmt_change_event(&ew->work);
2590 return;
2591
2592 case MLX4_DEV_EVENT_SLAVE_INIT:
2593 /* here, p is the slave id */
2594 do_slave_init(ibdev, p, 1);
2595 return;
2596
2597 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
2598 /* here, p is the slave id */
2599 do_slave_init(ibdev, p, 0);
2600 return;
2601
2602 default:
2603 return;
2604 }
2605
2606 ibev.device = ibdev_ptr;
2607 ibev.element.port_num = (u8) p;
2608
2609 ib_dispatch_event(&ibev);
2610 }
2611
2612 static struct mlx4_interface mlx4_ib_interface = {
2613 .add = mlx4_ib_add,
2614 .remove = mlx4_ib_remove,
2615 .event = mlx4_ib_event,
2616 .protocol = MLX4_PROT_IB_IPV6
2617 };
2618
2619 static int __init mlx4_ib_init(void)
2620 {
2621 int err;
2622
2623 wq = create_singlethread_workqueue("mlx4_ib");
2624 if (!wq)
2625 return -ENOMEM;
2626
2627 err = mlx4_ib_mcg_init();
2628 if (err)
2629 goto clean_wq;
2630
2631 err = mlx4_register_interface(&mlx4_ib_interface);
2632 if (err)
2633 goto clean_mcg;
2634
2635 return 0;
2636
2637 clean_mcg:
2638 mlx4_ib_mcg_destroy();
2639
2640 clean_wq:
2641 destroy_workqueue(wq);
2642 return err;
2643 }
2644
2645 static void __exit mlx4_ib_cleanup(void)
2646 {
2647 mlx4_unregister_interface(&mlx4_ib_interface);
2648 mlx4_ib_mcg_destroy();
2649 destroy_workqueue(wq);
2650 }
2651
2652 module_init(mlx4_ib_init);
2653 module_exit(mlx4_ib_cleanup);
Linux kernel - Deliverables
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