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efi/arm: Fix boot crash with CONFIG_CPUMASK_OFFSTACK=y
[mirror_ubuntu-artful-kernel.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 #include <net/devlink.h>
45
46 #include <rdma/ib_smi.h>
47 #include <rdma/ib_user_verbs.h>
48 #include <rdma/ib_addr.h>
49 #include <rdma/ib_cache.h>
50
51 #include <net/bonding.h>
52
53 #include <linux/mlx4/driver.h>
54 #include <linux/mlx4/cmd.h>
55 #include <linux/mlx4/qp.h>
56
57 #include "mlx4_ib.h"
58 #include <rdma/mlx4-abi.h>
59
60 #define DRV_NAME MLX4_IB_DRV_NAME
61 #define DRV_VERSION "2.2-1"
62 #define DRV_RELDATE "Feb 2014"
63
64 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
65 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
66 #define MLX4_IB_CARD_REV_A0 0xA0
67
68 MODULE_AUTHOR("Roland Dreier");
69 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
70 MODULE_LICENSE("Dual BSD/GPL");
71 MODULE_VERSION(DRV_VERSION);
72
73 int mlx4_ib_sm_guid_assign = 0;
74 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
75 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
76
77 static const char mlx4_ib_version[] =
78 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
79 DRV_VERSION " (" DRV_RELDATE ")\n";
80
81 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
82
83 static struct workqueue_struct *wq;
84
85 static void init_query_mad(struct ib_smp *mad)
86 {
87 mad->base_version = 1;
88 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
89 mad->class_version = 1;
90 mad->method = IB_MGMT_METHOD_GET;
91 }
92
93 static int check_flow_steering_support(struct mlx4_dev *dev)
94 {
95 int eth_num_ports = 0;
96 int ib_num_ports = 0;
97
98 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
99
100 if (dmfs) {
101 int i;
102 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
103 eth_num_ports++;
104 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
105 ib_num_ports++;
106 dmfs &= (!ib_num_ports ||
107 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
108 (!eth_num_ports ||
109 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
110 if (ib_num_ports && mlx4_is_mfunc(dev)) {
111 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
112 dmfs = 0;
113 }
114 }
115 return dmfs;
116 }
117
118 static int num_ib_ports(struct mlx4_dev *dev)
119 {
120 int ib_ports = 0;
121 int i;
122
123 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
124 ib_ports++;
125
126 return ib_ports;
127 }
128
129 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
130 {
131 struct mlx4_ib_dev *ibdev = to_mdev(device);
132 struct net_device *dev;
133
134 rcu_read_lock();
135 dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
136
137 if (dev) {
138 if (mlx4_is_bonded(ibdev->dev)) {
139 struct net_device *upper = NULL;
140
141 upper = netdev_master_upper_dev_get_rcu(dev);
142 if (upper) {
143 struct net_device *active;
144
145 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
146 if (active)
147 dev = active;
148 }
149 }
150 }
151 if (dev)
152 dev_hold(dev);
153
154 rcu_read_unlock();
155 return dev;
156 }
157
158 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
159 struct mlx4_ib_dev *ibdev,
160 u8 port_num)
161 {
162 struct mlx4_cmd_mailbox *mailbox;
163 int err;
164 struct mlx4_dev *dev = ibdev->dev;
165 int i;
166 union ib_gid *gid_tbl;
167
168 mailbox = mlx4_alloc_cmd_mailbox(dev);
169 if (IS_ERR(mailbox))
170 return -ENOMEM;
171
172 gid_tbl = mailbox->buf;
173
174 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
175 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
176
177 err = mlx4_cmd(dev, mailbox->dma,
178 MLX4_SET_PORT_GID_TABLE << 8 | port_num,
179 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
180 MLX4_CMD_WRAPPED);
181 if (mlx4_is_bonded(dev))
182 err += mlx4_cmd(dev, mailbox->dma,
183 MLX4_SET_PORT_GID_TABLE << 8 | 2,
184 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
185 MLX4_CMD_WRAPPED);
186
187 mlx4_free_cmd_mailbox(dev, mailbox);
188 return err;
189 }
190
191 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
192 struct mlx4_ib_dev *ibdev,
193 u8 port_num)
194 {
195 struct mlx4_cmd_mailbox *mailbox;
196 int err;
197 struct mlx4_dev *dev = ibdev->dev;
198 int i;
199 struct {
200 union ib_gid gid;
201 __be32 rsrvd1[2];
202 __be16 rsrvd2;
203 u8 type;
204 u8 version;
205 __be32 rsrvd3;
206 } *gid_tbl;
207
208 mailbox = mlx4_alloc_cmd_mailbox(dev);
209 if (IS_ERR(mailbox))
210 return -ENOMEM;
211
212 gid_tbl = mailbox->buf;
213 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
214 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
215 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
216 gid_tbl[i].version = 2;
217 if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
218 gid_tbl[i].type = 1;
219 else
220 memset(&gid_tbl[i].gid, 0, 12);
221 }
222 }
223
224 err = mlx4_cmd(dev, mailbox->dma,
225 MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
226 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
227 MLX4_CMD_WRAPPED);
228 if (mlx4_is_bonded(dev))
229 err += mlx4_cmd(dev, mailbox->dma,
230 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
231 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
232 MLX4_CMD_WRAPPED);
233
234 mlx4_free_cmd_mailbox(dev, mailbox);
235 return err;
236 }
237
238 static int mlx4_ib_update_gids(struct gid_entry *gids,
239 struct mlx4_ib_dev *ibdev,
240 u8 port_num)
241 {
242 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
243 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
244
245 return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
246 }
247
248 static int mlx4_ib_add_gid(struct ib_device *device,
249 u8 port_num,
250 unsigned int index,
251 const union ib_gid *gid,
252 const struct ib_gid_attr *attr,
253 void **context)
254 {
255 struct mlx4_ib_dev *ibdev = to_mdev(device);
256 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
257 struct mlx4_port_gid_table *port_gid_table;
258 int free = -1, found = -1;
259 int ret = 0;
260 int hw_update = 0;
261 int i;
262 struct gid_entry *gids = NULL;
263
264 if (!rdma_cap_roce_gid_table(device, port_num))
265 return -EINVAL;
266
267 if (port_num > MLX4_MAX_PORTS)
268 return -EINVAL;
269
270 if (!context)
271 return -EINVAL;
272
273 port_gid_table = &iboe->gids[port_num - 1];
274 spin_lock_bh(&iboe->lock);
275 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
276 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
277 (port_gid_table->gids[i].gid_type == attr->gid_type)) {
278 found = i;
279 break;
280 }
281 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
282 free = i; /* HW has space */
283 }
284
285 if (found < 0) {
286 if (free < 0) {
287 ret = -ENOSPC;
288 } else {
289 port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
290 if (!port_gid_table->gids[free].ctx) {
291 ret = -ENOMEM;
292 } else {
293 *context = port_gid_table->gids[free].ctx;
294 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
295 port_gid_table->gids[free].gid_type = attr->gid_type;
296 port_gid_table->gids[free].ctx->real_index = free;
297 port_gid_table->gids[free].ctx->refcount = 1;
298 hw_update = 1;
299 }
300 }
301 } else {
302 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
303 *context = ctx;
304 ctx->refcount++;
305 }
306 if (!ret && hw_update) {
307 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
308 if (!gids) {
309 ret = -ENOMEM;
310 } else {
311 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
312 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
313 gids[i].gid_type = port_gid_table->gids[i].gid_type;
314 }
315 }
316 }
317 spin_unlock_bh(&iboe->lock);
318
319 if (!ret && hw_update) {
320 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
321 kfree(gids);
322 }
323
324 return ret;
325 }
326
327 static int mlx4_ib_del_gid(struct ib_device *device,
328 u8 port_num,
329 unsigned int index,
330 void **context)
331 {
332 struct gid_cache_context *ctx = *context;
333 struct mlx4_ib_dev *ibdev = to_mdev(device);
334 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
335 struct mlx4_port_gid_table *port_gid_table;
336 int ret = 0;
337 int hw_update = 0;
338 struct gid_entry *gids = NULL;
339
340 if (!rdma_cap_roce_gid_table(device, port_num))
341 return -EINVAL;
342
343 if (port_num > MLX4_MAX_PORTS)
344 return -EINVAL;
345
346 port_gid_table = &iboe->gids[port_num - 1];
347 spin_lock_bh(&iboe->lock);
348 if (ctx) {
349 ctx->refcount--;
350 if (!ctx->refcount) {
351 unsigned int real_index = ctx->real_index;
352
353 memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
354 kfree(port_gid_table->gids[real_index].ctx);
355 port_gid_table->gids[real_index].ctx = NULL;
356 hw_update = 1;
357 }
358 }
359 if (!ret && hw_update) {
360 int i;
361
362 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
363 if (!gids) {
364 ret = -ENOMEM;
365 } else {
366 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
367 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
368 }
369 }
370 spin_unlock_bh(&iboe->lock);
371
372 if (!ret && hw_update) {
373 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
374 kfree(gids);
375 }
376 return ret;
377 }
378
379 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
380 u8 port_num, int index)
381 {
382 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
383 struct gid_cache_context *ctx = NULL;
384 union ib_gid gid;
385 struct mlx4_port_gid_table *port_gid_table;
386 int real_index = -EINVAL;
387 int i;
388 int ret;
389 unsigned long flags;
390 struct ib_gid_attr attr;
391
392 if (port_num > MLX4_MAX_PORTS)
393 return -EINVAL;
394
395 if (mlx4_is_bonded(ibdev->dev))
396 port_num = 1;
397
398 if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
399 return index;
400
401 ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
402 if (ret)
403 return ret;
404
405 if (attr.ndev)
406 dev_put(attr.ndev);
407
408 if (!memcmp(&gid, &zgid, sizeof(gid)))
409 return -EINVAL;
410
411 spin_lock_irqsave(&iboe->lock, flags);
412 port_gid_table = &iboe->gids[port_num - 1];
413
414 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
415 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
416 attr.gid_type == port_gid_table->gids[i].gid_type) {
417 ctx = port_gid_table->gids[i].ctx;
418 break;
419 }
420 if (ctx)
421 real_index = ctx->real_index;
422 spin_unlock_irqrestore(&iboe->lock, flags);
423 return real_index;
424 }
425
426 static int mlx4_ib_query_device(struct ib_device *ibdev,
427 struct ib_device_attr *props,
428 struct ib_udata *uhw)
429 {
430 struct mlx4_ib_dev *dev = to_mdev(ibdev);
431 struct ib_smp *in_mad = NULL;
432 struct ib_smp *out_mad = NULL;
433 int err;
434 int have_ib_ports;
435 struct mlx4_uverbs_ex_query_device cmd;
436 struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
437 struct mlx4_clock_params clock_params;
438
439 if (uhw->inlen) {
440 if (uhw->inlen < sizeof(cmd))
441 return -EINVAL;
442
443 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
444 if (err)
445 return err;
446
447 if (cmd.comp_mask)
448 return -EINVAL;
449
450 if (cmd.reserved)
451 return -EINVAL;
452 }
453
454 resp.response_length = offsetof(typeof(resp), response_length) +
455 sizeof(resp.response_length);
456 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
457 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
458 err = -ENOMEM;
459 if (!in_mad || !out_mad)
460 goto out;
461
462 init_query_mad(in_mad);
463 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
464
465 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
466 1, NULL, NULL, in_mad, out_mad);
467 if (err)
468 goto out;
469
470 memset(props, 0, sizeof *props);
471
472 have_ib_ports = num_ib_ports(dev->dev);
473
474 props->fw_ver = dev->dev->caps.fw_ver;
475 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
476 IB_DEVICE_PORT_ACTIVE_EVENT |
477 IB_DEVICE_SYS_IMAGE_GUID |
478 IB_DEVICE_RC_RNR_NAK_GEN |
479 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
480 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
481 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
482 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
483 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
484 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
485 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
486 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
487 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
488 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
489 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
490 if (dev->dev->caps.max_gso_sz &&
491 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
492 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
493 props->device_cap_flags |= IB_DEVICE_UD_TSO;
494 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
495 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
496 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
497 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
498 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
499 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
500 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
501 props->device_cap_flags |= IB_DEVICE_XRC;
502 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
503 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
504 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
505 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
506 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
507 else
508 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
509 }
510 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
511 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
512
513 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
514
515 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
516 0xffffff;
517 props->vendor_part_id = dev->dev->persist->pdev->device;
518 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
519 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
520
521 props->max_mr_size = ~0ull;
522 props->page_size_cap = dev->dev->caps.page_size_cap;
523 props->max_qp = dev->dev->quotas.qp;
524 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
525 props->max_sge = min(dev->dev->caps.max_sq_sg,
526 dev->dev->caps.max_rq_sg);
527 props->max_sge_rd = MLX4_MAX_SGE_RD;
528 props->max_cq = dev->dev->quotas.cq;
529 props->max_cqe = dev->dev->caps.max_cqes;
530 props->max_mr = dev->dev->quotas.mpt;
531 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
532 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
533 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
534 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
535 props->max_srq = dev->dev->quotas.srq;
536 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
537 props->max_srq_sge = dev->dev->caps.max_srq_sge;
538 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
539 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
540 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
541 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
542 props->masked_atomic_cap = props->atomic_cap;
543 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
544 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
545 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
546 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
547 props->max_mcast_grp;
548 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
549 props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
550 props->timestamp_mask = 0xFFFFFFFFFFFFULL;
551 props->max_ah = INT_MAX;
552
553 if (!mlx4_is_slave(dev->dev))
554 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
555
556 if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
557 resp.response_length += sizeof(resp.hca_core_clock_offset);
558 if (!err && !mlx4_is_slave(dev->dev)) {
559 resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
560 resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
561 }
562 }
563
564 if (uhw->outlen) {
565 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
566 if (err)
567 goto out;
568 }
569 out:
570 kfree(in_mad);
571 kfree(out_mad);
572
573 return err;
574 }
575
576 static enum rdma_link_layer
577 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
578 {
579 struct mlx4_dev *dev = to_mdev(device)->dev;
580
581 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
582 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
583 }
584
585 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
586 struct ib_port_attr *props, int netw_view)
587 {
588 struct ib_smp *in_mad = NULL;
589 struct ib_smp *out_mad = NULL;
590 int ext_active_speed;
591 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
592 int err = -ENOMEM;
593
594 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
595 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
596 if (!in_mad || !out_mad)
597 goto out;
598
599 init_query_mad(in_mad);
600 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
601 in_mad->attr_mod = cpu_to_be32(port);
602
603 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
604 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
605
606 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
607 in_mad, out_mad);
608 if (err)
609 goto out;
610
611
612 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
613 props->lmc = out_mad->data[34] & 0x7;
614 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
615 props->sm_sl = out_mad->data[36] & 0xf;
616 props->state = out_mad->data[32] & 0xf;
617 props->phys_state = out_mad->data[33] >> 4;
618 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
619 if (netw_view)
620 props->gid_tbl_len = out_mad->data[50];
621 else
622 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
623 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
624 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
625 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
626 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
627 props->active_width = out_mad->data[31] & 0xf;
628 props->active_speed = out_mad->data[35] >> 4;
629 props->max_mtu = out_mad->data[41] & 0xf;
630 props->active_mtu = out_mad->data[36] >> 4;
631 props->subnet_timeout = out_mad->data[51] & 0x1f;
632 props->max_vl_num = out_mad->data[37] >> 4;
633 props->init_type_reply = out_mad->data[41] >> 4;
634
635 /* Check if extended speeds (EDR/FDR/...) are supported */
636 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
637 ext_active_speed = out_mad->data[62] >> 4;
638
639 switch (ext_active_speed) {
640 case 1:
641 props->active_speed = IB_SPEED_FDR;
642 break;
643 case 2:
644 props->active_speed = IB_SPEED_EDR;
645 break;
646 }
647 }
648
649 /* If reported active speed is QDR, check if is FDR-10 */
650 if (props->active_speed == IB_SPEED_QDR) {
651 init_query_mad(in_mad);
652 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
653 in_mad->attr_mod = cpu_to_be32(port);
654
655 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
656 NULL, NULL, in_mad, out_mad);
657 if (err)
658 goto out;
659
660 /* Checking LinkSpeedActive for FDR-10 */
661 if (out_mad->data[15] & 0x1)
662 props->active_speed = IB_SPEED_FDR10;
663 }
664
665 /* Avoid wrong speed value returned by FW if the IB link is down. */
666 if (props->state == IB_PORT_DOWN)
667 props->active_speed = IB_SPEED_SDR;
668
669 out:
670 kfree(in_mad);
671 kfree(out_mad);
672 return err;
673 }
674
675 static u8 state_to_phys_state(enum ib_port_state state)
676 {
677 return state == IB_PORT_ACTIVE ? 5 : 3;
678 }
679
680 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
681 struct ib_port_attr *props)
682 {
683
684 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
685 struct mlx4_ib_iboe *iboe = &mdev->iboe;
686 struct net_device *ndev;
687 enum ib_mtu tmp;
688 struct mlx4_cmd_mailbox *mailbox;
689 int err = 0;
690 int is_bonded = mlx4_is_bonded(mdev->dev);
691
692 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
693 if (IS_ERR(mailbox))
694 return PTR_ERR(mailbox);
695
696 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
697 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
698 MLX4_CMD_WRAPPED);
699 if (err)
700 goto out;
701
702 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ||
703 (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
704 IB_WIDTH_4X : IB_WIDTH_1X;
705 props->active_speed = (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
706 IB_SPEED_FDR : IB_SPEED_QDR;
707 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
708 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
709 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
710 props->pkey_tbl_len = 1;
711 props->max_mtu = IB_MTU_4096;
712 props->max_vl_num = 2;
713 props->state = IB_PORT_DOWN;
714 props->phys_state = state_to_phys_state(props->state);
715 props->active_mtu = IB_MTU_256;
716 spin_lock_bh(&iboe->lock);
717 ndev = iboe->netdevs[port - 1];
718 if (ndev && is_bonded) {
719 rcu_read_lock(); /* required to get upper dev */
720 ndev = netdev_master_upper_dev_get_rcu(ndev);
721 rcu_read_unlock();
722 }
723 if (!ndev)
724 goto out_unlock;
725
726 tmp = iboe_get_mtu(ndev->mtu);
727 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
728
729 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
730 IB_PORT_ACTIVE : IB_PORT_DOWN;
731 props->phys_state = state_to_phys_state(props->state);
732 out_unlock:
733 spin_unlock_bh(&iboe->lock);
734 out:
735 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
736 return err;
737 }
738
739 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
740 struct ib_port_attr *props, int netw_view)
741 {
742 int err;
743
744 /* props being zeroed by the caller, avoid zeroing it here */
745
746 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
747 ib_link_query_port(ibdev, port, props, netw_view) :
748 eth_link_query_port(ibdev, port, props);
749
750 return err;
751 }
752
753 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
754 struct ib_port_attr *props)
755 {
756 /* returns host view */
757 return __mlx4_ib_query_port(ibdev, port, props, 0);
758 }
759
760 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
761 union ib_gid *gid, int netw_view)
762 {
763 struct ib_smp *in_mad = NULL;
764 struct ib_smp *out_mad = NULL;
765 int err = -ENOMEM;
766 struct mlx4_ib_dev *dev = to_mdev(ibdev);
767 int clear = 0;
768 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
769
770 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
771 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
772 if (!in_mad || !out_mad)
773 goto out;
774
775 init_query_mad(in_mad);
776 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
777 in_mad->attr_mod = cpu_to_be32(port);
778
779 if (mlx4_is_mfunc(dev->dev) && netw_view)
780 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
781
782 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
783 if (err)
784 goto out;
785
786 memcpy(gid->raw, out_mad->data + 8, 8);
787
788 if (mlx4_is_mfunc(dev->dev) && !netw_view) {
789 if (index) {
790 /* For any index > 0, return the null guid */
791 err = 0;
792 clear = 1;
793 goto out;
794 }
795 }
796
797 init_query_mad(in_mad);
798 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
799 in_mad->attr_mod = cpu_to_be32(index / 8);
800
801 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
802 NULL, NULL, in_mad, out_mad);
803 if (err)
804 goto out;
805
806 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
807
808 out:
809 if (clear)
810 memset(gid->raw + 8, 0, 8);
811 kfree(in_mad);
812 kfree(out_mad);
813 return err;
814 }
815
816 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
817 union ib_gid *gid)
818 {
819 int ret;
820
821 if (rdma_protocol_ib(ibdev, port))
822 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
823
824 if (!rdma_protocol_roce(ibdev, port))
825 return -ENODEV;
826
827 if (!rdma_cap_roce_gid_table(ibdev, port))
828 return -ENODEV;
829
830 ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
831 if (ret == -EAGAIN) {
832 memcpy(gid, &zgid, sizeof(*gid));
833 return 0;
834 }
835
836 return ret;
837 }
838
839 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
840 {
841 union sl2vl_tbl_to_u64 sl2vl64;
842 struct ib_smp *in_mad = NULL;
843 struct ib_smp *out_mad = NULL;
844 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
845 int err = -ENOMEM;
846 int jj;
847
848 if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
849 *sl2vl_tbl = 0;
850 return 0;
851 }
852
853 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
854 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
855 if (!in_mad || !out_mad)
856 goto out;
857
858 init_query_mad(in_mad);
859 in_mad->attr_id = IB_SMP_ATTR_SL_TO_VL_TABLE;
860 in_mad->attr_mod = 0;
861
862 if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
863 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
864
865 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
866 in_mad, out_mad);
867 if (err)
868 goto out;
869
870 for (jj = 0; jj < 8; jj++)
871 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
872 *sl2vl_tbl = sl2vl64.sl64;
873
874 out:
875 kfree(in_mad);
876 kfree(out_mad);
877 return err;
878 }
879
880 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
881 {
882 u64 sl2vl;
883 int i;
884 int err;
885
886 for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
887 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
888 continue;
889 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
890 if (err) {
891 pr_err("Unable to get default sl to vl mapping for port %d. Using all zeroes (%d)\n",
892 i, err);
893 sl2vl = 0;
894 }
895 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
896 }
897 }
898
899 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
900 u16 *pkey, int netw_view)
901 {
902 struct ib_smp *in_mad = NULL;
903 struct ib_smp *out_mad = NULL;
904 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
905 int err = -ENOMEM;
906
907 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
908 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
909 if (!in_mad || !out_mad)
910 goto out;
911
912 init_query_mad(in_mad);
913 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
914 in_mad->attr_mod = cpu_to_be32(index / 32);
915
916 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
917 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
918
919 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
920 in_mad, out_mad);
921 if (err)
922 goto out;
923
924 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
925
926 out:
927 kfree(in_mad);
928 kfree(out_mad);
929 return err;
930 }
931
932 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
933 {
934 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
935 }
936
937 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
938 struct ib_device_modify *props)
939 {
940 struct mlx4_cmd_mailbox *mailbox;
941 unsigned long flags;
942
943 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
944 return -EOPNOTSUPP;
945
946 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
947 return 0;
948
949 if (mlx4_is_slave(to_mdev(ibdev)->dev))
950 return -EOPNOTSUPP;
951
952 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
953 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
954 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
955
956 /*
957 * If possible, pass node desc to FW, so it can generate
958 * a 144 trap. If cmd fails, just ignore.
959 */
960 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
961 if (IS_ERR(mailbox))
962 return 0;
963
964 memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
965 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
966 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
967
968 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
969
970 return 0;
971 }
972
973 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
974 u32 cap_mask)
975 {
976 struct mlx4_cmd_mailbox *mailbox;
977 int err;
978
979 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
980 if (IS_ERR(mailbox))
981 return PTR_ERR(mailbox);
982
983 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
984 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
985 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
986 } else {
987 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
988 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
989 }
990
991 err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
992 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
993 MLX4_CMD_WRAPPED);
994
995 mlx4_free_cmd_mailbox(dev->dev, mailbox);
996 return err;
997 }
998
999 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1000 struct ib_port_modify *props)
1001 {
1002 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1003 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1004 struct ib_port_attr attr;
1005 u32 cap_mask;
1006 int err;
1007
1008 /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1009 * of whether port link layer is ETH or IB. For ETH ports, qkey
1010 * violations and port capabilities are not meaningful.
1011 */
1012 if (is_eth)
1013 return 0;
1014
1015 mutex_lock(&mdev->cap_mask_mutex);
1016
1017 err = ib_query_port(ibdev, port, &attr);
1018 if (err)
1019 goto out;
1020
1021 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1022 ~props->clr_port_cap_mask;
1023
1024 err = mlx4_ib_SET_PORT(mdev, port,
1025 !!(mask & IB_PORT_RESET_QKEY_CNTR),
1026 cap_mask);
1027
1028 out:
1029 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1030 return err;
1031 }
1032
1033 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
1034 struct ib_udata *udata)
1035 {
1036 struct mlx4_ib_dev *dev = to_mdev(ibdev);
1037 struct mlx4_ib_ucontext *context;
1038 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1039 struct mlx4_ib_alloc_ucontext_resp resp;
1040 int err;
1041
1042 if (!dev->ib_active)
1043 return ERR_PTR(-EAGAIN);
1044
1045 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1046 resp_v3.qp_tab_size = dev->dev->caps.num_qps;
1047 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size;
1048 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1049 } else {
1050 resp.dev_caps = dev->dev->caps.userspace_caps;
1051 resp.qp_tab_size = dev->dev->caps.num_qps;
1052 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
1053 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1054 resp.cqe_size = dev->dev->caps.cqe_size;
1055 }
1056
1057 context = kzalloc(sizeof(*context), GFP_KERNEL);
1058 if (!context)
1059 return ERR_PTR(-ENOMEM);
1060
1061 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1062 if (err) {
1063 kfree(context);
1064 return ERR_PTR(err);
1065 }
1066
1067 INIT_LIST_HEAD(&context->db_page_list);
1068 mutex_init(&context->db_page_mutex);
1069
1070 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1071 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1072 else
1073 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1074
1075 if (err) {
1076 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1077 kfree(context);
1078 return ERR_PTR(-EFAULT);
1079 }
1080
1081 return &context->ibucontext;
1082 }
1083
1084 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1085 {
1086 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1087
1088 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1089 kfree(context);
1090
1091 return 0;
1092 }
1093
1094 static void mlx4_ib_vma_open(struct vm_area_struct *area)
1095 {
1096 /* vma_open is called when a new VMA is created on top of our VMA.
1097 * This is done through either mremap flow or split_vma (usually due
1098 * to mlock, madvise, munmap, etc.). We do not support a clone of the
1099 * vma, as this VMA is strongly hardware related. Therefore we set the
1100 * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1101 * calling us again and trying to do incorrect actions. We assume that
1102 * the original vma size is exactly a single page that there will be no
1103 * "splitting" operations on.
1104 */
1105 area->vm_ops = NULL;
1106 }
1107
1108 static void mlx4_ib_vma_close(struct vm_area_struct *area)
1109 {
1110 struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1111
1112 /* It's guaranteed that all VMAs opened on a FD are closed before the
1113 * file itself is closed, therefore no sync is needed with the regular
1114 * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1115 * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1116 * The close operation is usually called under mm->mmap_sem except when
1117 * process is exiting. The exiting case is handled explicitly as part
1118 * of mlx4_ib_disassociate_ucontext.
1119 */
1120 mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1121 area->vm_private_data;
1122
1123 /* set the vma context pointer to null in the mlx4_ib driver's private
1124 * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1125 */
1126 mlx4_ib_vma_priv_data->vma = NULL;
1127 }
1128
1129 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1130 .open = mlx4_ib_vma_open,
1131 .close = mlx4_ib_vma_close
1132 };
1133
1134 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1135 {
1136 int i;
1137 int ret = 0;
1138 struct vm_area_struct *vma;
1139 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1140 struct task_struct *owning_process = NULL;
1141 struct mm_struct *owning_mm = NULL;
1142
1143 owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1144 if (!owning_process)
1145 return;
1146
1147 owning_mm = get_task_mm(owning_process);
1148 if (!owning_mm) {
1149 pr_info("no mm, disassociate ucontext is pending task termination\n");
1150 while (1) {
1151 /* make sure that task is dead before returning, it may
1152 * prevent a rare case of module down in parallel to a
1153 * call to mlx4_ib_vma_close.
1154 */
1155 put_task_struct(owning_process);
1156 msleep(1);
1157 owning_process = get_pid_task(ibcontext->tgid,
1158 PIDTYPE_PID);
1159 if (!owning_process ||
1160 owning_process->state == TASK_DEAD) {
1161 pr_info("disassociate ucontext done, task was terminated\n");
1162 /* in case task was dead need to release the task struct */
1163 if (owning_process)
1164 put_task_struct(owning_process);
1165 return;
1166 }
1167 }
1168 }
1169
1170 /* need to protect from a race on closing the vma as part of
1171 * mlx4_ib_vma_close().
1172 */
1173 down_read(&owning_mm->mmap_sem);
1174 for (i = 0; i < HW_BAR_COUNT; i++) {
1175 vma = context->hw_bar_info[i].vma;
1176 if (!vma)
1177 continue;
1178
1179 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1180 context->hw_bar_info[i].vma->vm_start,
1181 PAGE_SIZE);
1182 if (ret) {
1183 pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1184 BUG_ON(1);
1185 }
1186
1187 /* context going to be destroyed, should not access ops any more */
1188 context->hw_bar_info[i].vma->vm_ops = NULL;
1189 }
1190
1191 up_read(&owning_mm->mmap_sem);
1192 mmput(owning_mm);
1193 put_task_struct(owning_process);
1194 }
1195
1196 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1197 struct mlx4_ib_vma_private_data *vma_private_data)
1198 {
1199 vma_private_data->vma = vma;
1200 vma->vm_private_data = vma_private_data;
1201 vma->vm_ops = &mlx4_ib_vm_ops;
1202 }
1203
1204 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1205 {
1206 struct mlx4_ib_dev *dev = to_mdev(context->device);
1207 struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1208
1209 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1210 return -EINVAL;
1211
1212 if (vma->vm_pgoff == 0) {
1213 /* We prevent double mmaping on same context */
1214 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1215 return -EINVAL;
1216
1217 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1218
1219 if (io_remap_pfn_range(vma, vma->vm_start,
1220 to_mucontext(context)->uar.pfn,
1221 PAGE_SIZE, vma->vm_page_prot))
1222 return -EAGAIN;
1223
1224 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1225
1226 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1227 /* We prevent double mmaping on same context */
1228 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1229 return -EINVAL;
1230
1231 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1232
1233 if (io_remap_pfn_range(vma, vma->vm_start,
1234 to_mucontext(context)->uar.pfn +
1235 dev->dev->caps.num_uars,
1236 PAGE_SIZE, vma->vm_page_prot))
1237 return -EAGAIN;
1238
1239 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1240
1241 } else if (vma->vm_pgoff == 3) {
1242 struct mlx4_clock_params params;
1243 int ret;
1244
1245 /* We prevent double mmaping on same context */
1246 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1247 return -EINVAL;
1248
1249 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1250
1251 if (ret)
1252 return ret;
1253
1254 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1255 if (io_remap_pfn_range(vma, vma->vm_start,
1256 (pci_resource_start(dev->dev->persist->pdev,
1257 params.bar) +
1258 params.offset)
1259 >> PAGE_SHIFT,
1260 PAGE_SIZE, vma->vm_page_prot))
1261 return -EAGAIN;
1262
1263 mlx4_ib_set_vma_data(vma,
1264 &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1265 } else {
1266 return -EINVAL;
1267 }
1268
1269 return 0;
1270 }
1271
1272 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1273 struct ib_ucontext *context,
1274 struct ib_udata *udata)
1275 {
1276 struct mlx4_ib_pd *pd;
1277 int err;
1278
1279 pd = kmalloc(sizeof *pd, GFP_KERNEL);
1280 if (!pd)
1281 return ERR_PTR(-ENOMEM);
1282
1283 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1284 if (err) {
1285 kfree(pd);
1286 return ERR_PTR(err);
1287 }
1288
1289 if (context)
1290 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1291 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1292 kfree(pd);
1293 return ERR_PTR(-EFAULT);
1294 }
1295
1296 return &pd->ibpd;
1297 }
1298
1299 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1300 {
1301 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1302 kfree(pd);
1303
1304 return 0;
1305 }
1306
1307 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1308 struct ib_ucontext *context,
1309 struct ib_udata *udata)
1310 {
1311 struct mlx4_ib_xrcd *xrcd;
1312 struct ib_cq_init_attr cq_attr = {};
1313 int err;
1314
1315 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1316 return ERR_PTR(-ENOSYS);
1317
1318 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1319 if (!xrcd)
1320 return ERR_PTR(-ENOMEM);
1321
1322 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1323 if (err)
1324 goto err1;
1325
1326 xrcd->pd = ib_alloc_pd(ibdev, 0);
1327 if (IS_ERR(xrcd->pd)) {
1328 err = PTR_ERR(xrcd->pd);
1329 goto err2;
1330 }
1331
1332 cq_attr.cqe = 1;
1333 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1334 if (IS_ERR(xrcd->cq)) {
1335 err = PTR_ERR(xrcd->cq);
1336 goto err3;
1337 }
1338
1339 return &xrcd->ibxrcd;
1340
1341 err3:
1342 ib_dealloc_pd(xrcd->pd);
1343 err2:
1344 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1345 err1:
1346 kfree(xrcd);
1347 return ERR_PTR(err);
1348 }
1349
1350 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1351 {
1352 ib_destroy_cq(to_mxrcd(xrcd)->cq);
1353 ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1354 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1355 kfree(xrcd);
1356
1357 return 0;
1358 }
1359
1360 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1361 {
1362 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1363 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1364 struct mlx4_ib_gid_entry *ge;
1365
1366 ge = kzalloc(sizeof *ge, GFP_KERNEL);
1367 if (!ge)
1368 return -ENOMEM;
1369
1370 ge->gid = *gid;
1371 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1372 ge->port = mqp->port;
1373 ge->added = 1;
1374 }
1375
1376 mutex_lock(&mqp->mutex);
1377 list_add_tail(&ge->list, &mqp->gid_list);
1378 mutex_unlock(&mqp->mutex);
1379
1380 return 0;
1381 }
1382
1383 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1384 struct mlx4_ib_counters *ctr_table)
1385 {
1386 struct counter_index *counter, *tmp_count;
1387
1388 mutex_lock(&ctr_table->mutex);
1389 list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1390 list) {
1391 if (counter->allocated)
1392 mlx4_counter_free(ibdev->dev, counter->index);
1393 list_del(&counter->list);
1394 kfree(counter);
1395 }
1396 mutex_unlock(&ctr_table->mutex);
1397 }
1398
1399 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1400 union ib_gid *gid)
1401 {
1402 struct net_device *ndev;
1403 int ret = 0;
1404
1405 if (!mqp->port)
1406 return 0;
1407
1408 spin_lock_bh(&mdev->iboe.lock);
1409 ndev = mdev->iboe.netdevs[mqp->port - 1];
1410 if (ndev)
1411 dev_hold(ndev);
1412 spin_unlock_bh(&mdev->iboe.lock);
1413
1414 if (ndev) {
1415 ret = 1;
1416 dev_put(ndev);
1417 }
1418
1419 return ret;
1420 }
1421
1422 struct mlx4_ib_steering {
1423 struct list_head list;
1424 struct mlx4_flow_reg_id reg_id;
1425 union ib_gid gid;
1426 };
1427
1428 #define LAST_ETH_FIELD vlan_tag
1429 #define LAST_IB_FIELD sl
1430 #define LAST_IPV4_FIELD dst_ip
1431 #define LAST_TCP_UDP_FIELD src_port
1432
1433 /* Field is the last supported field */
1434 #define FIELDS_NOT_SUPPORTED(filter, field)\
1435 memchr_inv((void *)&filter.field +\
1436 sizeof(filter.field), 0,\
1437 sizeof(filter) -\
1438 offsetof(typeof(filter), field) -\
1439 sizeof(filter.field))
1440
1441 static int parse_flow_attr(struct mlx4_dev *dev,
1442 u32 qp_num,
1443 union ib_flow_spec *ib_spec,
1444 struct _rule_hw *mlx4_spec)
1445 {
1446 enum mlx4_net_trans_rule_id type;
1447
1448 switch (ib_spec->type) {
1449 case IB_FLOW_SPEC_ETH:
1450 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1451 return -ENOTSUPP;
1452
1453 type = MLX4_NET_TRANS_RULE_ID_ETH;
1454 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1455 ETH_ALEN);
1456 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1457 ETH_ALEN);
1458 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1459 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1460 break;
1461 case IB_FLOW_SPEC_IB:
1462 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1463 return -ENOTSUPP;
1464
1465 type = MLX4_NET_TRANS_RULE_ID_IB;
1466 mlx4_spec->ib.l3_qpn =
1467 cpu_to_be32(qp_num);
1468 mlx4_spec->ib.qpn_mask =
1469 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1470 break;
1471
1472
1473 case IB_FLOW_SPEC_IPV4:
1474 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1475 return -ENOTSUPP;
1476
1477 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1478 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1479 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1480 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1481 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1482 break;
1483
1484 case IB_FLOW_SPEC_TCP:
1485 case IB_FLOW_SPEC_UDP:
1486 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1487 return -ENOTSUPP;
1488
1489 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1490 MLX4_NET_TRANS_RULE_ID_TCP :
1491 MLX4_NET_TRANS_RULE_ID_UDP;
1492 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1493 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1494 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1495 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1496 break;
1497
1498 default:
1499 return -EINVAL;
1500 }
1501 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1502 mlx4_hw_rule_sz(dev, type) < 0)
1503 return -EINVAL;
1504 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1505 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1506 return mlx4_hw_rule_sz(dev, type);
1507 }
1508
1509 struct default_rules {
1510 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1511 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1512 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1513 __u8 link_layer;
1514 };
1515 static const struct default_rules default_table[] = {
1516 {
1517 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1518 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1519 .rules_create_list = {IB_FLOW_SPEC_IB},
1520 .link_layer = IB_LINK_LAYER_INFINIBAND
1521 }
1522 };
1523
1524 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1525 struct ib_flow_attr *flow_attr)
1526 {
1527 int i, j, k;
1528 void *ib_flow;
1529 const struct default_rules *pdefault_rules = default_table;
1530 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1531
1532 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1533 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1534 memset(&field_types, 0, sizeof(field_types));
1535
1536 if (link_layer != pdefault_rules->link_layer)
1537 continue;
1538
1539 ib_flow = flow_attr + 1;
1540 /* we assume the specs are sorted */
1541 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1542 j < flow_attr->num_of_specs; k++) {
1543 union ib_flow_spec *current_flow =
1544 (union ib_flow_spec *)ib_flow;
1545
1546 /* same layer but different type */
1547 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1548 (pdefault_rules->mandatory_fields[k] &
1549 IB_FLOW_SPEC_LAYER_MASK)) &&
1550 (current_flow->type !=
1551 pdefault_rules->mandatory_fields[k]))
1552 goto out;
1553
1554 /* same layer, try match next one */
1555 if (current_flow->type ==
1556 pdefault_rules->mandatory_fields[k]) {
1557 j++;
1558 ib_flow +=
1559 ((union ib_flow_spec *)ib_flow)->size;
1560 }
1561 }
1562
1563 ib_flow = flow_attr + 1;
1564 for (j = 0; j < flow_attr->num_of_specs;
1565 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1566 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1567 /* same layer and same type */
1568 if (((union ib_flow_spec *)ib_flow)->type ==
1569 pdefault_rules->mandatory_not_fields[k])
1570 goto out;
1571
1572 return i;
1573 }
1574 out:
1575 return -1;
1576 }
1577
1578 static int __mlx4_ib_create_default_rules(
1579 struct mlx4_ib_dev *mdev,
1580 struct ib_qp *qp,
1581 const struct default_rules *pdefault_rules,
1582 struct _rule_hw *mlx4_spec) {
1583 int size = 0;
1584 int i;
1585
1586 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1587 int ret;
1588 union ib_flow_spec ib_spec;
1589 switch (pdefault_rules->rules_create_list[i]) {
1590 case 0:
1591 /* no rule */
1592 continue;
1593 case IB_FLOW_SPEC_IB:
1594 ib_spec.type = IB_FLOW_SPEC_IB;
1595 ib_spec.size = sizeof(struct ib_flow_spec_ib);
1596
1597 break;
1598 default:
1599 /* invalid rule */
1600 return -EINVAL;
1601 }
1602 /* We must put empty rule, qpn is being ignored */
1603 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1604 mlx4_spec);
1605 if (ret < 0) {
1606 pr_info("invalid parsing\n");
1607 return -EINVAL;
1608 }
1609
1610 mlx4_spec = (void *)mlx4_spec + ret;
1611 size += ret;
1612 }
1613 return size;
1614 }
1615
1616 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1617 int domain,
1618 enum mlx4_net_trans_promisc_mode flow_type,
1619 u64 *reg_id)
1620 {
1621 int ret, i;
1622 int size = 0;
1623 void *ib_flow;
1624 struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1625 struct mlx4_cmd_mailbox *mailbox;
1626 struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1627 int default_flow;
1628
1629 static const u16 __mlx4_domain[] = {
1630 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1631 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1632 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1633 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1634 };
1635
1636 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1637 pr_err("Invalid priority value %d\n", flow_attr->priority);
1638 return -EINVAL;
1639 }
1640
1641 if (domain >= IB_FLOW_DOMAIN_NUM) {
1642 pr_err("Invalid domain value %d\n", domain);
1643 return -EINVAL;
1644 }
1645
1646 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1647 return -EINVAL;
1648
1649 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1650 if (IS_ERR(mailbox))
1651 return PTR_ERR(mailbox);
1652 ctrl = mailbox->buf;
1653
1654 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1655 flow_attr->priority);
1656 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1657 ctrl->port = flow_attr->port;
1658 ctrl->qpn = cpu_to_be32(qp->qp_num);
1659
1660 ib_flow = flow_attr + 1;
1661 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1662 /* Add default flows */
1663 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1664 if (default_flow >= 0) {
1665 ret = __mlx4_ib_create_default_rules(
1666 mdev, qp, default_table + default_flow,
1667 mailbox->buf + size);
1668 if (ret < 0) {
1669 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1670 return -EINVAL;
1671 }
1672 size += ret;
1673 }
1674 for (i = 0; i < flow_attr->num_of_specs; i++) {
1675 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1676 mailbox->buf + size);
1677 if (ret < 0) {
1678 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1679 return -EINVAL;
1680 }
1681 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1682 size += ret;
1683 }
1684
1685 if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1686 flow_attr->num_of_specs == 1) {
1687 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1688 enum ib_flow_spec_type header_spec =
1689 ((union ib_flow_spec *)(flow_attr + 1))->type;
1690
1691 if (header_spec == IB_FLOW_SPEC_ETH)
1692 mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1693 }
1694
1695 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1696 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1697 MLX4_CMD_NATIVE);
1698 if (ret == -ENOMEM)
1699 pr_err("mcg table is full. Fail to register network rule.\n");
1700 else if (ret == -ENXIO)
1701 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1702 else if (ret)
1703 pr_err("Invalid argument. Fail to register network rule.\n");
1704
1705 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1706 return ret;
1707 }
1708
1709 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1710 {
1711 int err;
1712 err = mlx4_cmd(dev, reg_id, 0, 0,
1713 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1714 MLX4_CMD_NATIVE);
1715 if (err)
1716 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1717 reg_id);
1718 return err;
1719 }
1720
1721 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1722 u64 *reg_id)
1723 {
1724 void *ib_flow;
1725 union ib_flow_spec *ib_spec;
1726 struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1727 int err = 0;
1728
1729 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1730 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1731 return 0; /* do nothing */
1732
1733 ib_flow = flow_attr + 1;
1734 ib_spec = (union ib_flow_spec *)ib_flow;
1735
1736 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1737 return 0; /* do nothing */
1738
1739 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1740 flow_attr->port, qp->qp_num,
1741 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1742 reg_id);
1743 return err;
1744 }
1745
1746 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1747 struct ib_flow_attr *flow_attr,
1748 enum mlx4_net_trans_promisc_mode *type)
1749 {
1750 int err = 0;
1751
1752 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1753 (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1754 (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1755 return -EOPNOTSUPP;
1756 }
1757
1758 if (flow_attr->num_of_specs == 0) {
1759 type[0] = MLX4_FS_MC_SNIFFER;
1760 type[1] = MLX4_FS_UC_SNIFFER;
1761 } else {
1762 union ib_flow_spec *ib_spec;
1763
1764 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1765 if (ib_spec->type != IB_FLOW_SPEC_ETH)
1766 return -EINVAL;
1767
1768 /* if all is zero than MC and UC */
1769 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1770 type[0] = MLX4_FS_MC_SNIFFER;
1771 type[1] = MLX4_FS_UC_SNIFFER;
1772 } else {
1773 u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1774 ib_spec->eth.mask.dst_mac[1],
1775 ib_spec->eth.mask.dst_mac[2],
1776 ib_spec->eth.mask.dst_mac[3],
1777 ib_spec->eth.mask.dst_mac[4],
1778 ib_spec->eth.mask.dst_mac[5]};
1779
1780 /* Above xor was only on MC bit, non empty mask is valid
1781 * only if this bit is set and rest are zero.
1782 */
1783 if (!is_zero_ether_addr(&mac[0]))
1784 return -EINVAL;
1785
1786 if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1787 type[0] = MLX4_FS_MC_SNIFFER;
1788 else
1789 type[0] = MLX4_FS_UC_SNIFFER;
1790 }
1791 }
1792
1793 return err;
1794 }
1795
1796 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1797 struct ib_flow_attr *flow_attr,
1798 int domain)
1799 {
1800 int err = 0, i = 0, j = 0;
1801 struct mlx4_ib_flow *mflow;
1802 enum mlx4_net_trans_promisc_mode type[2];
1803 struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1804 int is_bonded = mlx4_is_bonded(dev);
1805
1806 if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1807 return ERR_PTR(-EINVAL);
1808
1809 if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1810 (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1811 return ERR_PTR(-EOPNOTSUPP);
1812
1813 memset(type, 0, sizeof(type));
1814
1815 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1816 if (!mflow) {
1817 err = -ENOMEM;
1818 goto err_free;
1819 }
1820
1821 switch (flow_attr->type) {
1822 case IB_FLOW_ATTR_NORMAL:
1823 /* If dont trap flag (continue match) is set, under specific
1824 * condition traffic be replicated to given qp,
1825 * without stealing it
1826 */
1827 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1828 err = mlx4_ib_add_dont_trap_rule(dev,
1829 flow_attr,
1830 type);
1831 if (err)
1832 goto err_free;
1833 } else {
1834 type[0] = MLX4_FS_REGULAR;
1835 }
1836 break;
1837
1838 case IB_FLOW_ATTR_ALL_DEFAULT:
1839 type[0] = MLX4_FS_ALL_DEFAULT;
1840 break;
1841
1842 case IB_FLOW_ATTR_MC_DEFAULT:
1843 type[0] = MLX4_FS_MC_DEFAULT;
1844 break;
1845
1846 case IB_FLOW_ATTR_SNIFFER:
1847 type[0] = MLX4_FS_MIRROR_RX_PORT;
1848 type[1] = MLX4_FS_MIRROR_SX_PORT;
1849 break;
1850
1851 default:
1852 err = -EINVAL;
1853 goto err_free;
1854 }
1855
1856 while (i < ARRAY_SIZE(type) && type[i]) {
1857 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1858 &mflow->reg_id[i].id);
1859 if (err)
1860 goto err_create_flow;
1861 if (is_bonded) {
1862 /* Application always sees one port so the mirror rule
1863 * must be on port #2
1864 */
1865 flow_attr->port = 2;
1866 err = __mlx4_ib_create_flow(qp, flow_attr,
1867 domain, type[j],
1868 &mflow->reg_id[j].mirror);
1869 flow_attr->port = 1;
1870 if (err)
1871 goto err_create_flow;
1872 j++;
1873 }
1874
1875 i++;
1876 }
1877
1878 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1879 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1880 &mflow->reg_id[i].id);
1881 if (err)
1882 goto err_create_flow;
1883
1884 if (is_bonded) {
1885 flow_attr->port = 2;
1886 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1887 &mflow->reg_id[j].mirror);
1888 flow_attr->port = 1;
1889 if (err)
1890 goto err_create_flow;
1891 j++;
1892 }
1893 /* function to create mirror rule */
1894 i++;
1895 }
1896
1897 return &mflow->ibflow;
1898
1899 err_create_flow:
1900 while (i) {
1901 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1902 mflow->reg_id[i].id);
1903 i--;
1904 }
1905
1906 while (j) {
1907 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1908 mflow->reg_id[j].mirror);
1909 j--;
1910 }
1911 err_free:
1912 kfree(mflow);
1913 return ERR_PTR(err);
1914 }
1915
1916 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1917 {
1918 int err, ret = 0;
1919 int i = 0;
1920 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1921 struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1922
1923 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1924 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1925 if (err)
1926 ret = err;
1927 if (mflow->reg_id[i].mirror) {
1928 err = __mlx4_ib_destroy_flow(mdev->dev,
1929 mflow->reg_id[i].mirror);
1930 if (err)
1931 ret = err;
1932 }
1933 i++;
1934 }
1935
1936 kfree(mflow);
1937 return ret;
1938 }
1939
1940 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1941 {
1942 int err;
1943 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1944 struct mlx4_dev *dev = mdev->dev;
1945 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1946 struct mlx4_ib_steering *ib_steering = NULL;
1947 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1948 struct mlx4_flow_reg_id reg_id;
1949
1950 if (mdev->dev->caps.steering_mode ==
1951 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1952 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1953 if (!ib_steering)
1954 return -ENOMEM;
1955 }
1956
1957 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1958 !!(mqp->flags &
1959 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1960 prot, &reg_id.id);
1961 if (err) {
1962 pr_err("multicast attach op failed, err %d\n", err);
1963 goto err_malloc;
1964 }
1965
1966 reg_id.mirror = 0;
1967 if (mlx4_is_bonded(dev)) {
1968 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1969 (mqp->port == 1) ? 2 : 1,
1970 !!(mqp->flags &
1971 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1972 prot, &reg_id.mirror);
1973 if (err)
1974 goto err_add;
1975 }
1976
1977 err = add_gid_entry(ibqp, gid);
1978 if (err)
1979 goto err_add;
1980
1981 if (ib_steering) {
1982 memcpy(ib_steering->gid.raw, gid->raw, 16);
1983 ib_steering->reg_id = reg_id;
1984 mutex_lock(&mqp->mutex);
1985 list_add(&ib_steering->list, &mqp->steering_rules);
1986 mutex_unlock(&mqp->mutex);
1987 }
1988 return 0;
1989
1990 err_add:
1991 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1992 prot, reg_id.id);
1993 if (reg_id.mirror)
1994 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1995 prot, reg_id.mirror);
1996 err_malloc:
1997 kfree(ib_steering);
1998
1999 return err;
2000 }
2001
2002 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
2003 {
2004 struct mlx4_ib_gid_entry *ge;
2005 struct mlx4_ib_gid_entry *tmp;
2006 struct mlx4_ib_gid_entry *ret = NULL;
2007
2008 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
2009 if (!memcmp(raw, ge->gid.raw, 16)) {
2010 ret = ge;
2011 break;
2012 }
2013 }
2014
2015 return ret;
2016 }
2017
2018 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2019 {
2020 int err;
2021 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
2022 struct mlx4_dev *dev = mdev->dev;
2023 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
2024 struct net_device *ndev;
2025 struct mlx4_ib_gid_entry *ge;
2026 struct mlx4_flow_reg_id reg_id = {0, 0};
2027 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
2028
2029 if (mdev->dev->caps.steering_mode ==
2030 MLX4_STEERING_MODE_DEVICE_MANAGED) {
2031 struct mlx4_ib_steering *ib_steering;
2032
2033 mutex_lock(&mqp->mutex);
2034 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
2035 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
2036 list_del(&ib_steering->list);
2037 break;
2038 }
2039 }
2040 mutex_unlock(&mqp->mutex);
2041 if (&ib_steering->list == &mqp->steering_rules) {
2042 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
2043 return -EINVAL;
2044 }
2045 reg_id = ib_steering->reg_id;
2046 kfree(ib_steering);
2047 }
2048
2049 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2050 prot, reg_id.id);
2051 if (err)
2052 return err;
2053
2054 if (mlx4_is_bonded(dev)) {
2055 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2056 prot, reg_id.mirror);
2057 if (err)
2058 return err;
2059 }
2060
2061 mutex_lock(&mqp->mutex);
2062 ge = find_gid_entry(mqp, gid->raw);
2063 if (ge) {
2064 spin_lock_bh(&mdev->iboe.lock);
2065 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
2066 if (ndev)
2067 dev_hold(ndev);
2068 spin_unlock_bh(&mdev->iboe.lock);
2069 if (ndev)
2070 dev_put(ndev);
2071 list_del(&ge->list);
2072 kfree(ge);
2073 } else
2074 pr_warn("could not find mgid entry\n");
2075
2076 mutex_unlock(&mqp->mutex);
2077
2078 return 0;
2079 }
2080
2081 static int init_node_data(struct mlx4_ib_dev *dev)
2082 {
2083 struct ib_smp *in_mad = NULL;
2084 struct ib_smp *out_mad = NULL;
2085 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
2086 int err = -ENOMEM;
2087
2088 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
2089 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
2090 if (!in_mad || !out_mad)
2091 goto out;
2092
2093 init_query_mad(in_mad);
2094 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
2095 if (mlx4_is_master(dev->dev))
2096 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2097
2098 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2099 if (err)
2100 goto out;
2101
2102 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2103
2104 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2105
2106 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2107 if (err)
2108 goto out;
2109
2110 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2111 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2112
2113 out:
2114 kfree(in_mad);
2115 kfree(out_mad);
2116 return err;
2117 }
2118
2119 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2120 char *buf)
2121 {
2122 struct mlx4_ib_dev *dev =
2123 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2124 return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2125 }
2126
2127 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2128 char *buf)
2129 {
2130 struct mlx4_ib_dev *dev =
2131 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2132 return sprintf(buf, "%x\n", dev->dev->rev_id);
2133 }
2134
2135 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2136 char *buf)
2137 {
2138 struct mlx4_ib_dev *dev =
2139 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2140 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2141 dev->dev->board_id);
2142 }
2143
2144 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2145 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2146 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2147
2148 static struct device_attribute *mlx4_class_attributes[] = {
2149 &dev_attr_hw_rev,
2150 &dev_attr_hca_type,
2151 &dev_attr_board_id
2152 };
2153
2154 struct diag_counter {
2155 const char *name;
2156 u32 offset;
2157 };
2158
2159 #define DIAG_COUNTER(_name, _offset) \
2160 { .name = #_name, .offset = _offset }
2161
2162 static const struct diag_counter diag_basic[] = {
2163 DIAG_COUNTER(rq_num_lle, 0x00),
2164 DIAG_COUNTER(sq_num_lle, 0x04),
2165 DIAG_COUNTER(rq_num_lqpoe, 0x08),
2166 DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2167 DIAG_COUNTER(rq_num_lpe, 0x18),
2168 DIAG_COUNTER(sq_num_lpe, 0x1C),
2169 DIAG_COUNTER(rq_num_wrfe, 0x20),
2170 DIAG_COUNTER(sq_num_wrfe, 0x24),
2171 DIAG_COUNTER(sq_num_mwbe, 0x2C),
2172 DIAG_COUNTER(sq_num_bre, 0x34),
2173 DIAG_COUNTER(sq_num_rire, 0x44),
2174 DIAG_COUNTER(rq_num_rire, 0x48),
2175 DIAG_COUNTER(sq_num_rae, 0x4C),
2176 DIAG_COUNTER(rq_num_rae, 0x50),
2177 DIAG_COUNTER(sq_num_roe, 0x54),
2178 DIAG_COUNTER(sq_num_tree, 0x5C),
2179 DIAG_COUNTER(sq_num_rree, 0x64),
2180 DIAG_COUNTER(rq_num_rnr, 0x68),
2181 DIAG_COUNTER(sq_num_rnr, 0x6C),
2182 DIAG_COUNTER(rq_num_oos, 0x100),
2183 DIAG_COUNTER(sq_num_oos, 0x104),
2184 };
2185
2186 static const struct diag_counter diag_ext[] = {
2187 DIAG_COUNTER(rq_num_dup, 0x130),
2188 DIAG_COUNTER(sq_num_to, 0x134),
2189 };
2190
2191 static const struct diag_counter diag_device_only[] = {
2192 DIAG_COUNTER(num_cqovf, 0x1A0),
2193 DIAG_COUNTER(rq_num_udsdprd, 0x118),
2194 };
2195
2196 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2197 u8 port_num)
2198 {
2199 struct mlx4_ib_dev *dev = to_mdev(ibdev);
2200 struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2201
2202 if (!diag[!!port_num].name)
2203 return NULL;
2204
2205 return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2206 diag[!!port_num].num_counters,
2207 RDMA_HW_STATS_DEFAULT_LIFESPAN);
2208 }
2209
2210 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2211 struct rdma_hw_stats *stats,
2212 u8 port, int index)
2213 {
2214 struct mlx4_ib_dev *dev = to_mdev(ibdev);
2215 struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2216 u32 hw_value[ARRAY_SIZE(diag_device_only) +
2217 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2218 int ret;
2219 int i;
2220
2221 ret = mlx4_query_diag_counters(dev->dev,
2222 MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2223 diag[!!port].offset, hw_value,
2224 diag[!!port].num_counters, port);
2225
2226 if (ret)
2227 return ret;
2228
2229 for (i = 0; i < diag[!!port].num_counters; i++)
2230 stats->value[i] = hw_value[i];
2231
2232 return diag[!!port].num_counters;
2233 }
2234
2235 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2236 const char ***name,
2237 u32 **offset,
2238 u32 *num,
2239 bool port)
2240 {
2241 u32 num_counters;
2242
2243 num_counters = ARRAY_SIZE(diag_basic);
2244
2245 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2246 num_counters += ARRAY_SIZE(diag_ext);
2247
2248 if (!port)
2249 num_counters += ARRAY_SIZE(diag_device_only);
2250
2251 *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2252 if (!*name)
2253 return -ENOMEM;
2254
2255 *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2256 if (!*offset)
2257 goto err_name;
2258
2259 *num = num_counters;
2260
2261 return 0;
2262
2263 err_name:
2264 kfree(*name);
2265 return -ENOMEM;
2266 }
2267
2268 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2269 const char **name,
2270 u32 *offset,
2271 bool port)
2272 {
2273 int i;
2274 int j;
2275
2276 for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2277 name[i] = diag_basic[i].name;
2278 offset[i] = diag_basic[i].offset;
2279 }
2280
2281 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2282 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2283 name[j] = diag_ext[i].name;
2284 offset[j] = diag_ext[i].offset;
2285 }
2286 }
2287
2288 if (!port) {
2289 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2290 name[j] = diag_device_only[i].name;
2291 offset[j] = diag_device_only[i].offset;
2292 }
2293 }
2294 }
2295
2296 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2297 {
2298 struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2299 int i;
2300 int ret;
2301 bool per_port = !!(ibdev->dev->caps.flags2 &
2302 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2303
2304 if (mlx4_is_slave(ibdev->dev))
2305 return 0;
2306
2307 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2308 /* i == 1 means we are building port counters */
2309 if (i && !per_port)
2310 continue;
2311
2312 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2313 &diag[i].offset,
2314 &diag[i].num_counters, i);
2315 if (ret)
2316 goto err_alloc;
2317
2318 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2319 diag[i].offset, i);
2320 }
2321
2322 ibdev->ib_dev.get_hw_stats = mlx4_ib_get_hw_stats;
2323 ibdev->ib_dev.alloc_hw_stats = mlx4_ib_alloc_hw_stats;
2324
2325 return 0;
2326
2327 err_alloc:
2328 if (i) {
2329 kfree(diag[i - 1].name);
2330 kfree(diag[i - 1].offset);
2331 }
2332
2333 return ret;
2334 }
2335
2336 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2337 {
2338 int i;
2339
2340 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2341 kfree(ibdev->diag_counters[i].offset);
2342 kfree(ibdev->diag_counters[i].name);
2343 }
2344 }
2345
2346 #define MLX4_IB_INVALID_MAC ((u64)-1)
2347 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2348 struct net_device *dev,
2349 int port)
2350 {
2351 u64 new_smac = 0;
2352 u64 release_mac = MLX4_IB_INVALID_MAC;
2353 struct mlx4_ib_qp *qp;
2354
2355 read_lock(&dev_base_lock);
2356 new_smac = mlx4_mac_to_u64(dev->dev_addr);
2357 read_unlock(&dev_base_lock);
2358
2359 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2360
2361 /* no need for update QP1 and mac registration in non-SRIOV */
2362 if (!mlx4_is_mfunc(ibdev->dev))
2363 return;
2364
2365 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2366 qp = ibdev->qp1_proxy[port - 1];
2367 if (qp) {
2368 int new_smac_index;
2369 u64 old_smac;
2370 struct mlx4_update_qp_params update_params;
2371
2372 mutex_lock(&qp->mutex);
2373 old_smac = qp->pri.smac;
2374 if (new_smac == old_smac)
2375 goto unlock;
2376
2377 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2378
2379 if (new_smac_index < 0)
2380 goto unlock;
2381
2382 update_params.smac_index = new_smac_index;
2383 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2384 &update_params)) {
2385 release_mac = new_smac;
2386 goto unlock;
2387 }
2388 /* if old port was zero, no mac was yet registered for this QP */
2389 if (qp->pri.smac_port)
2390 release_mac = old_smac;
2391 qp->pri.smac = new_smac;
2392 qp->pri.smac_port = port;
2393 qp->pri.smac_index = new_smac_index;
2394 }
2395
2396 unlock:
2397 if (release_mac != MLX4_IB_INVALID_MAC)
2398 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2399 if (qp)
2400 mutex_unlock(&qp->mutex);
2401 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2402 }
2403
2404 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2405 struct net_device *dev,
2406 unsigned long event)
2407
2408 {
2409 struct mlx4_ib_iboe *iboe;
2410 int update_qps_port = -1;
2411 int port;
2412
2413 ASSERT_RTNL();
2414
2415 iboe = &ibdev->iboe;
2416
2417 spin_lock_bh(&iboe->lock);
2418 mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2419
2420 iboe->netdevs[port - 1] =
2421 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2422
2423 if (dev == iboe->netdevs[port - 1] &&
2424 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2425 event == NETDEV_UP || event == NETDEV_CHANGE))
2426 update_qps_port = port;
2427
2428 }
2429 spin_unlock_bh(&iboe->lock);
2430
2431 if (update_qps_port > 0)
2432 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2433 }
2434
2435 static int mlx4_ib_netdev_event(struct notifier_block *this,
2436 unsigned long event, void *ptr)
2437 {
2438 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2439 struct mlx4_ib_dev *ibdev;
2440
2441 if (!net_eq(dev_net(dev), &init_net))
2442 return NOTIFY_DONE;
2443
2444 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2445 mlx4_ib_scan_netdevs(ibdev, dev, event);
2446
2447 return NOTIFY_DONE;
2448 }
2449
2450 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2451 {
2452 int port;
2453 int slave;
2454 int i;
2455
2456 if (mlx4_is_master(ibdev->dev)) {
2457 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2458 ++slave) {
2459 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2460 for (i = 0;
2461 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2462 ++i) {
2463 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2464 /* master has the identity virt2phys pkey mapping */
2465 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2466 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2467 mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2468 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2469 }
2470 }
2471 }
2472 /* initialize pkey cache */
2473 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2474 for (i = 0;
2475 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2476 ++i)
2477 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2478 (i) ? 0 : 0xFFFF;
2479 }
2480 }
2481 }
2482
2483 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2484 {
2485 int i, j, eq = 0, total_eqs = 0;
2486
2487 ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2488 sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2489 if (!ibdev->eq_table)
2490 return;
2491
2492 for (i = 1; i <= dev->caps.num_ports; i++) {
2493 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2494 j++, total_eqs++) {
2495 if (i > 1 && mlx4_is_eq_shared(dev, total_eqs))
2496 continue;
2497 ibdev->eq_table[eq] = total_eqs;
2498 if (!mlx4_assign_eq(dev, i,
2499 &ibdev->eq_table[eq]))
2500 eq++;
2501 else
2502 ibdev->eq_table[eq] = -1;
2503 }
2504 }
2505
2506 for (i = eq; i < dev->caps.num_comp_vectors;
2507 ibdev->eq_table[i++] = -1)
2508 ;
2509
2510 /* Advertise the new number of EQs to clients */
2511 ibdev->ib_dev.num_comp_vectors = eq;
2512 }
2513
2514 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2515 {
2516 int i;
2517 int total_eqs = ibdev->ib_dev.num_comp_vectors;
2518
2519 /* no eqs were allocated */
2520 if (!ibdev->eq_table)
2521 return;
2522
2523 /* Reset the advertised EQ number */
2524 ibdev->ib_dev.num_comp_vectors = 0;
2525
2526 for (i = 0; i < total_eqs; i++)
2527 mlx4_release_eq(dev, ibdev->eq_table[i]);
2528
2529 kfree(ibdev->eq_table);
2530 ibdev->eq_table = NULL;
2531 }
2532
2533 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2534 struct ib_port_immutable *immutable)
2535 {
2536 struct ib_port_attr attr;
2537 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2538 int err;
2539
2540 if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2541 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2542 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2543 } else {
2544 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2545 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2546 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2547 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2548 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2549 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2550 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2551 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2552 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2553 }
2554
2555 err = ib_query_port(ibdev, port_num, &attr);
2556 if (err)
2557 return err;
2558
2559 immutable->pkey_tbl_len = attr.pkey_tbl_len;
2560 immutable->gid_tbl_len = attr.gid_tbl_len;
2561
2562 return 0;
2563 }
2564
2565 static void get_fw_ver_str(struct ib_device *device, char *str,
2566 size_t str_len)
2567 {
2568 struct mlx4_ib_dev *dev =
2569 container_of(device, struct mlx4_ib_dev, ib_dev);
2570 snprintf(str, str_len, "%d.%d.%d",
2571 (int) (dev->dev->caps.fw_ver >> 32),
2572 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2573 (int) dev->dev->caps.fw_ver & 0xffff);
2574 }
2575
2576 static void *mlx4_ib_add(struct mlx4_dev *dev)
2577 {
2578 struct mlx4_ib_dev *ibdev;
2579 int num_ports = 0;
2580 int i, j;
2581 int err;
2582 struct mlx4_ib_iboe *iboe;
2583 int ib_num_ports = 0;
2584 int num_req_counters;
2585 int allocated;
2586 u32 counter_index;
2587 struct counter_index *new_counter_index = NULL;
2588
2589 pr_info_once("%s", mlx4_ib_version);
2590
2591 num_ports = 0;
2592 mlx4_foreach_ib_transport_port(i, dev)
2593 num_ports++;
2594
2595 /* No point in registering a device with no ports... */
2596 if (num_ports == 0)
2597 return NULL;
2598
2599 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2600 if (!ibdev) {
2601 dev_err(&dev->persist->pdev->dev,
2602 "Device struct alloc failed\n");
2603 return NULL;
2604 }
2605
2606 iboe = &ibdev->iboe;
2607
2608 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2609 goto err_dealloc;
2610
2611 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2612 goto err_pd;
2613
2614 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2615 PAGE_SIZE);
2616 if (!ibdev->uar_map)
2617 goto err_uar;
2618 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2619
2620 ibdev->dev = dev;
2621 ibdev->bond_next_port = 0;
2622
2623 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2624 ibdev->ib_dev.owner = THIS_MODULE;
2625 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
2626 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
2627 ibdev->num_ports = num_ports;
2628 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ?
2629 1 : ibdev->num_ports;
2630 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
2631 ibdev->ib_dev.dev.parent = &dev->persist->pdev->dev;
2632 ibdev->ib_dev.get_netdev = mlx4_ib_get_netdev;
2633 ibdev->ib_dev.add_gid = mlx4_ib_add_gid;
2634 ibdev->ib_dev.del_gid = mlx4_ib_del_gid;
2635
2636 if (dev->caps.userspace_caps)
2637 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2638 else
2639 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2640
2641 ibdev->ib_dev.uverbs_cmd_mask =
2642 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
2643 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
2644 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
2645 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
2646 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
2647 (1ull << IB_USER_VERBS_CMD_REG_MR) |
2648 (1ull << IB_USER_VERBS_CMD_REREG_MR) |
2649 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
2650 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2651 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
2652 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
2653 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
2654 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
2655 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
2656 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
2657 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
2658 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
2659 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
2660 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
2661 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
2662 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
2663 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
2664 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
2665 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2666
2667 ibdev->ib_dev.query_device = mlx4_ib_query_device;
2668 ibdev->ib_dev.query_port = mlx4_ib_query_port;
2669 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
2670 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
2671 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
2672 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
2673 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
2674 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
2675 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
2676 ibdev->ib_dev.mmap = mlx4_ib_mmap;
2677 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
2678 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
2679 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
2680 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
2681 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
2682 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
2683 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
2684 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
2685 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
2686 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
2687 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
2688 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
2689 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
2690 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
2691 ibdev->ib_dev.post_send = mlx4_ib_post_send;
2692 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
2693 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
2694 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
2695 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
2696 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
2697 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
2698 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
2699 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
2700 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
2701 ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr;
2702 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
2703 ibdev->ib_dev.alloc_mr = mlx4_ib_alloc_mr;
2704 ibdev->ib_dev.map_mr_sg = mlx4_ib_map_mr_sg;
2705 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
2706 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
2707 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
2708 ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2709 ibdev->ib_dev.get_dev_fw_str = get_fw_ver_str;
2710 ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2711
2712 if (!mlx4_is_slave(ibdev->dev)) {
2713 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
2714 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
2715 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
2716 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
2717 }
2718
2719 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2720 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2721 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2722 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2723
2724 ibdev->ib_dev.uverbs_cmd_mask |=
2725 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2726 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2727 }
2728
2729 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2730 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2731 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2732 ibdev->ib_dev.uverbs_cmd_mask |=
2733 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2734 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2735 }
2736
2737 if (check_flow_steering_support(dev)) {
2738 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2739 ibdev->ib_dev.create_flow = mlx4_ib_create_flow;
2740 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow;
2741
2742 ibdev->ib_dev.uverbs_ex_cmd_mask |=
2743 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2744 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2745 }
2746
2747 ibdev->ib_dev.uverbs_ex_cmd_mask |=
2748 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2749 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2750 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2751
2752 mlx4_ib_alloc_eqs(dev, ibdev);
2753
2754 spin_lock_init(&iboe->lock);
2755
2756 if (init_node_data(ibdev))
2757 goto err_map;
2758 mlx4_init_sl2vl_tbl(ibdev);
2759
2760 for (i = 0; i < ibdev->num_ports; ++i) {
2761 mutex_init(&ibdev->counters_table[i].mutex);
2762 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2763 }
2764
2765 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2766 for (i = 0; i < num_req_counters; ++i) {
2767 mutex_init(&ibdev->qp1_proxy_lock[i]);
2768 allocated = 0;
2769 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2770 IB_LINK_LAYER_ETHERNET) {
2771 err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2772 /* if failed to allocate a new counter, use default */
2773 if (err)
2774 counter_index =
2775 mlx4_get_default_counter_index(dev,
2776 i + 1);
2777 else
2778 allocated = 1;
2779 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2780 counter_index = mlx4_get_default_counter_index(dev,
2781 i + 1);
2782 }
2783 new_counter_index = kmalloc(sizeof(*new_counter_index),
2784 GFP_KERNEL);
2785 if (!new_counter_index) {
2786 if (allocated)
2787 mlx4_counter_free(ibdev->dev, counter_index);
2788 goto err_counter;
2789 }
2790 new_counter_index->index = counter_index;
2791 new_counter_index->allocated = allocated;
2792 list_add_tail(&new_counter_index->list,
2793 &ibdev->counters_table[i].counters_list);
2794 ibdev->counters_table[i].default_counter = counter_index;
2795 pr_info("counter index %d for port %d allocated %d\n",
2796 counter_index, i + 1, allocated);
2797 }
2798 if (mlx4_is_bonded(dev))
2799 for (i = 1; i < ibdev->num_ports ; ++i) {
2800 new_counter_index =
2801 kmalloc(sizeof(struct counter_index),
2802 GFP_KERNEL);
2803 if (!new_counter_index)
2804 goto err_counter;
2805 new_counter_index->index = counter_index;
2806 new_counter_index->allocated = 0;
2807 list_add_tail(&new_counter_index->list,
2808 &ibdev->counters_table[i].counters_list);
2809 ibdev->counters_table[i].default_counter =
2810 counter_index;
2811 }
2812
2813 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2814 ib_num_ports++;
2815
2816 spin_lock_init(&ibdev->sm_lock);
2817 mutex_init(&ibdev->cap_mask_mutex);
2818 INIT_LIST_HEAD(&ibdev->qp_list);
2819 spin_lock_init(&ibdev->reset_flow_resource_lock);
2820
2821 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2822 ib_num_ports) {
2823 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2824 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2825 MLX4_IB_UC_STEER_QPN_ALIGN,
2826 &ibdev->steer_qpn_base, 0);
2827 if (err)
2828 goto err_counter;
2829
2830 ibdev->ib_uc_qpns_bitmap =
2831 kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2832 sizeof(long),
2833 GFP_KERNEL);
2834 if (!ibdev->ib_uc_qpns_bitmap)
2835 goto err_steer_qp_release;
2836
2837 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2838 bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2839 ibdev->steer_qpn_count);
2840 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2841 dev, ibdev->steer_qpn_base,
2842 ibdev->steer_qpn_base +
2843 ibdev->steer_qpn_count - 1);
2844 if (err)
2845 goto err_steer_free_bitmap;
2846 } else {
2847 bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2848 ibdev->steer_qpn_count);
2849 }
2850 }
2851
2852 for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2853 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2854
2855 if (mlx4_ib_alloc_diag_counters(ibdev))
2856 goto err_steer_free_bitmap;
2857
2858 if (ib_register_device(&ibdev->ib_dev, NULL))
2859 goto err_diag_counters;
2860
2861 if (mlx4_ib_mad_init(ibdev))
2862 goto err_reg;
2863
2864 if (mlx4_ib_init_sriov(ibdev))
2865 goto err_mad;
2866
2867 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE ||
2868 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2869 if (!iboe->nb.notifier_call) {
2870 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2871 err = register_netdevice_notifier(&iboe->nb);
2872 if (err) {
2873 iboe->nb.notifier_call = NULL;
2874 goto err_notif;
2875 }
2876 }
2877 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2878 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2879 if (err) {
2880 goto err_notif;
2881 }
2882 }
2883 }
2884
2885 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2886 if (device_create_file(&ibdev->ib_dev.dev,
2887 mlx4_class_attributes[j]))
2888 goto err_notif;
2889 }
2890
2891 ibdev->ib_active = true;
2892 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2893 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2894 &ibdev->ib_dev);
2895
2896 if (mlx4_is_mfunc(ibdev->dev))
2897 init_pkeys(ibdev);
2898
2899 /* create paravirt contexts for any VFs which are active */
2900 if (mlx4_is_master(ibdev->dev)) {
2901 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2902 if (j == mlx4_master_func_num(ibdev->dev))
2903 continue;
2904 if (mlx4_is_slave_active(ibdev->dev, j))
2905 do_slave_init(ibdev, j, 1);
2906 }
2907 }
2908 return ibdev;
2909
2910 err_notif:
2911 if (ibdev->iboe.nb.notifier_call) {
2912 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2913 pr_warn("failure unregistering notifier\n");
2914 ibdev->iboe.nb.notifier_call = NULL;
2915 }
2916 flush_workqueue(wq);
2917
2918 mlx4_ib_close_sriov(ibdev);
2919
2920 err_mad:
2921 mlx4_ib_mad_cleanup(ibdev);
2922
2923 err_reg:
2924 ib_unregister_device(&ibdev->ib_dev);
2925
2926 err_diag_counters:
2927 mlx4_ib_diag_cleanup(ibdev);
2928
2929 err_steer_free_bitmap:
2930 kfree(ibdev->ib_uc_qpns_bitmap);
2931
2932 err_steer_qp_release:
2933 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2934 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2935 ibdev->steer_qpn_count);
2936 err_counter:
2937 for (i = 0; i < ibdev->num_ports; ++i)
2938 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2939
2940 err_map:
2941 iounmap(ibdev->uar_map);
2942
2943 err_uar:
2944 mlx4_uar_free(dev, &ibdev->priv_uar);
2945
2946 err_pd:
2947 mlx4_pd_free(dev, ibdev->priv_pdn);
2948
2949 err_dealloc:
2950 ib_dealloc_device(&ibdev->ib_dev);
2951
2952 return NULL;
2953 }
2954
2955 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2956 {
2957 int offset;
2958
2959 WARN_ON(!dev->ib_uc_qpns_bitmap);
2960
2961 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2962 dev->steer_qpn_count,
2963 get_count_order(count));
2964 if (offset < 0)
2965 return offset;
2966
2967 *qpn = dev->steer_qpn_base + offset;
2968 return 0;
2969 }
2970
2971 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2972 {
2973 if (!qpn ||
2974 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2975 return;
2976
2977 BUG_ON(qpn < dev->steer_qpn_base);
2978
2979 bitmap_release_region(dev->ib_uc_qpns_bitmap,
2980 qpn - dev->steer_qpn_base,
2981 get_count_order(count));
2982 }
2983
2984 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2985 int is_attach)
2986 {
2987 int err;
2988 size_t flow_size;
2989 struct ib_flow_attr *flow = NULL;
2990 struct ib_flow_spec_ib *ib_spec;
2991
2992 if (is_attach) {
2993 flow_size = sizeof(struct ib_flow_attr) +
2994 sizeof(struct ib_flow_spec_ib);
2995 flow = kzalloc(flow_size, GFP_KERNEL);
2996 if (!flow)
2997 return -ENOMEM;
2998 flow->port = mqp->port;
2999 flow->num_of_specs = 1;
3000 flow->size = flow_size;
3001 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
3002 ib_spec->type = IB_FLOW_SPEC_IB;
3003 ib_spec->size = sizeof(struct ib_flow_spec_ib);
3004 /* Add an empty rule for IB L2 */
3005 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
3006
3007 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
3008 IB_FLOW_DOMAIN_NIC,
3009 MLX4_FS_REGULAR,
3010 &mqp->reg_id);
3011 } else {
3012 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
3013 }
3014 kfree(flow);
3015 return err;
3016 }
3017
3018 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
3019 {
3020 struct mlx4_ib_dev *ibdev = ibdev_ptr;
3021 int p;
3022 int i;
3023
3024 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
3025 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
3026 ibdev->ib_active = false;
3027 flush_workqueue(wq);
3028
3029 mlx4_ib_close_sriov(ibdev);
3030 mlx4_ib_mad_cleanup(ibdev);
3031 ib_unregister_device(&ibdev->ib_dev);
3032 mlx4_ib_diag_cleanup(ibdev);
3033 if (ibdev->iboe.nb.notifier_call) {
3034 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
3035 pr_warn("failure unregistering notifier\n");
3036 ibdev->iboe.nb.notifier_call = NULL;
3037 }
3038
3039 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
3040 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3041 ibdev->steer_qpn_count);
3042 kfree(ibdev->ib_uc_qpns_bitmap);
3043 }
3044
3045 iounmap(ibdev->uar_map);
3046 for (p = 0; p < ibdev->num_ports; ++p)
3047 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3048
3049 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3050 mlx4_CLOSE_PORT(dev, p);
3051
3052 mlx4_ib_free_eqs(dev, ibdev);
3053
3054 mlx4_uar_free(dev, &ibdev->priv_uar);
3055 mlx4_pd_free(dev, ibdev->priv_pdn);
3056 ib_dealloc_device(&ibdev->ib_dev);
3057 }
3058
3059 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3060 {
3061 struct mlx4_ib_demux_work **dm = NULL;
3062 struct mlx4_dev *dev = ibdev->dev;
3063 int i;
3064 unsigned long flags;
3065 struct mlx4_active_ports actv_ports;
3066 unsigned int ports;
3067 unsigned int first_port;
3068
3069 if (!mlx4_is_master(dev))
3070 return;
3071
3072 actv_ports = mlx4_get_active_ports(dev, slave);
3073 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3074 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3075
3076 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3077 if (!dm)
3078 return;
3079
3080 for (i = 0; i < ports; i++) {
3081 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3082 if (!dm[i]) {
3083 while (--i >= 0)
3084 kfree(dm[i]);
3085 goto out;
3086 }
3087 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3088 dm[i]->port = first_port + i + 1;
3089 dm[i]->slave = slave;
3090 dm[i]->do_init = do_init;
3091 dm[i]->dev = ibdev;
3092 }
3093 /* initialize or tear down tunnel QPs for the slave */
3094 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3095 if (!ibdev->sriov.is_going_down) {
3096 for (i = 0; i < ports; i++)
3097 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3098 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3099 } else {
3100 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3101 for (i = 0; i < ports; i++)
3102 kfree(dm[i]);
3103 }
3104 out:
3105 kfree(dm);
3106 return;
3107 }
3108
3109 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3110 {
3111 struct mlx4_ib_qp *mqp;
3112 unsigned long flags_qp;
3113 unsigned long flags_cq;
3114 struct mlx4_ib_cq *send_mcq, *recv_mcq;
3115 struct list_head cq_notify_list;
3116 struct mlx4_cq *mcq;
3117 unsigned long flags;
3118
3119 pr_warn("mlx4_ib_handle_catas_error was started\n");
3120 INIT_LIST_HEAD(&cq_notify_list);
3121
3122 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3123 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3124
3125 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3126 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3127 if (mqp->sq.tail != mqp->sq.head) {
3128 send_mcq = to_mcq(mqp->ibqp.send_cq);
3129 spin_lock_irqsave(&send_mcq->lock, flags_cq);
3130 if (send_mcq->mcq.comp &&
3131 mqp->ibqp.send_cq->comp_handler) {
3132 if (!send_mcq->mcq.reset_notify_added) {
3133 send_mcq->mcq.reset_notify_added = 1;
3134 list_add_tail(&send_mcq->mcq.reset_notify,
3135 &cq_notify_list);
3136 }
3137 }
3138 spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3139 }
3140 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3141 /* Now, handle the QP's receive queue */
3142 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3143 /* no handling is needed for SRQ */
3144 if (!mqp->ibqp.srq) {
3145 if (mqp->rq.tail != mqp->rq.head) {
3146 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3147 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3148 if (recv_mcq->mcq.comp &&
3149 mqp->ibqp.recv_cq->comp_handler) {
3150 if (!recv_mcq->mcq.reset_notify_added) {
3151 recv_mcq->mcq.reset_notify_added = 1;
3152 list_add_tail(&recv_mcq->mcq.reset_notify,
3153 &cq_notify_list);
3154 }
3155 }
3156 spin_unlock_irqrestore(&recv_mcq->lock,
3157 flags_cq);
3158 }
3159 }
3160 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3161 }
3162
3163 list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3164 mcq->comp(mcq);
3165 }
3166 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3167 pr_warn("mlx4_ib_handle_catas_error ended\n");
3168 }
3169
3170 static void handle_bonded_port_state_event(struct work_struct *work)
3171 {
3172 struct ib_event_work *ew =
3173 container_of(work, struct ib_event_work, work);
3174 struct mlx4_ib_dev *ibdev = ew->ib_dev;
3175 enum ib_port_state bonded_port_state = IB_PORT_NOP;
3176 int i;
3177 struct ib_event ibev;
3178
3179 kfree(ew);
3180 spin_lock_bh(&ibdev->iboe.lock);
3181 for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3182 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3183 enum ib_port_state curr_port_state;
3184
3185 if (!curr_netdev)
3186 continue;
3187
3188 curr_port_state =
3189 (netif_running(curr_netdev) &&
3190 netif_carrier_ok(curr_netdev)) ?
3191 IB_PORT_ACTIVE : IB_PORT_DOWN;
3192
3193 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3194 curr_port_state : IB_PORT_ACTIVE;
3195 }
3196 spin_unlock_bh(&ibdev->iboe.lock);
3197
3198 ibev.device = &ibdev->ib_dev;
3199 ibev.element.port_num = 1;
3200 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3201 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3202
3203 ib_dispatch_event(&ibev);
3204 }
3205
3206 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3207 {
3208 u64 sl2vl;
3209 int err;
3210
3211 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3212 if (err) {
3213 pr_err("Unable to get current sl to vl mapping for port %d. Using all zeroes (%d)\n",
3214 port, err);
3215 sl2vl = 0;
3216 }
3217 atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3218 }
3219
3220 static void ib_sl2vl_update_work(struct work_struct *work)
3221 {
3222 struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3223 struct mlx4_ib_dev *mdev = ew->ib_dev;
3224 int port = ew->port;
3225
3226 mlx4_ib_sl2vl_update(mdev, port);
3227
3228 kfree(ew);
3229 }
3230
3231 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3232 int port)
3233 {
3234 struct ib_event_work *ew;
3235
3236 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3237 if (ew) {
3238 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3239 ew->port = port;
3240 ew->ib_dev = ibdev;
3241 queue_work(wq, &ew->work);
3242 }
3243 }
3244
3245 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3246 enum mlx4_dev_event event, unsigned long param)
3247 {
3248 struct ib_event ibev;
3249 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3250 struct mlx4_eqe *eqe = NULL;
3251 struct ib_event_work *ew;
3252 int p = 0;
3253
3254 if (mlx4_is_bonded(dev) &&
3255 ((event == MLX4_DEV_EVENT_PORT_UP) ||
3256 (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3257 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3258 if (!ew)
3259 return;
3260 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3261 ew->ib_dev = ibdev;
3262 queue_work(wq, &ew->work);
3263 return;
3264 }
3265
3266 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3267 eqe = (struct mlx4_eqe *)param;
3268 else
3269 p = (int) param;
3270
3271 switch (event) {
3272 case MLX4_DEV_EVENT_PORT_UP:
3273 if (p > ibdev->num_ports)
3274 return;
3275 if (!mlx4_is_slave(dev) &&
3276 rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3277 IB_LINK_LAYER_INFINIBAND) {
3278 if (mlx4_is_master(dev))
3279 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3280 if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3281 !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3282 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3283 }
3284 ibev.event = IB_EVENT_PORT_ACTIVE;
3285 break;
3286
3287 case MLX4_DEV_EVENT_PORT_DOWN:
3288 if (p > ibdev->num_ports)
3289 return;
3290 ibev.event = IB_EVENT_PORT_ERR;
3291 break;
3292
3293 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3294 ibdev->ib_active = false;
3295 ibev.event = IB_EVENT_DEVICE_FATAL;
3296 mlx4_ib_handle_catas_error(ibdev);
3297 break;
3298
3299 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3300 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3301 if (!ew)
3302 break;
3303
3304 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3305 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3306 ew->ib_dev = ibdev;
3307 /* need to queue only for port owner, which uses GEN_EQE */
3308 if (mlx4_is_master(dev))
3309 queue_work(wq, &ew->work);
3310 else
3311 handle_port_mgmt_change_event(&ew->work);
3312 return;
3313
3314 case MLX4_DEV_EVENT_SLAVE_INIT:
3315 /* here, p is the slave id */
3316 do_slave_init(ibdev, p, 1);
3317 if (mlx4_is_master(dev)) {
3318 int i;
3319
3320 for (i = 1; i <= ibdev->num_ports; i++) {
3321 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3322 == IB_LINK_LAYER_INFINIBAND)
3323 mlx4_ib_slave_alias_guid_event(ibdev,
3324 p, i,
3325 1);
3326 }
3327 }
3328 return;
3329
3330 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3331 if (mlx4_is_master(dev)) {
3332 int i;
3333
3334 for (i = 1; i <= ibdev->num_ports; i++) {
3335 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3336 == IB_LINK_LAYER_INFINIBAND)
3337 mlx4_ib_slave_alias_guid_event(ibdev,
3338 p, i,
3339 0);
3340 }
3341 }
3342 /* here, p is the slave id */
3343 do_slave_init(ibdev, p, 0);
3344 return;
3345
3346 default:
3347 return;
3348 }
3349
3350 ibev.device = ibdev_ptr;
3351 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3352
3353 ib_dispatch_event(&ibev);
3354 }
3355
3356 static struct mlx4_interface mlx4_ib_interface = {
3357 .add = mlx4_ib_add,
3358 .remove = mlx4_ib_remove,
3359 .event = mlx4_ib_event,
3360 .protocol = MLX4_PROT_IB_IPV6,
3361 .flags = MLX4_INTFF_BONDING
3362 };
3363
3364 static int __init mlx4_ib_init(void)
3365 {
3366 int err;
3367
3368 wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3369 if (!wq)
3370 return -ENOMEM;
3371
3372 err = mlx4_ib_mcg_init();
3373 if (err)
3374 goto clean_wq;
3375
3376 err = mlx4_register_interface(&mlx4_ib_interface);
3377 if (err)
3378 goto clean_mcg;
3379
3380 return 0;
3381
3382 clean_mcg:
3383 mlx4_ib_mcg_destroy();
3384
3385 clean_wq:
3386 destroy_workqueue(wq);
3387 return err;
3388 }
3389
3390 static void __exit mlx4_ib_cleanup(void)
3391 {
3392 mlx4_unregister_interface(&mlx4_ib_interface);
3393 mlx4_ib_mcg_destroy();
3394 destroy_workqueue(wq);
3395 }
3396
3397 module_init(mlx4_ib_init);
3398 module_exit(mlx4_ib_cleanup);
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