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 <linux/sched/mm.h>
43 #include <linux/sched/task.h>
44
45 #include <net/ipv6.h>
46 #include <net/addrconf.h>
47 #include <net/devlink.h>
48
49 #include <rdma/ib_smi.h>
50 #include <rdma/ib_user_verbs.h>
51 #include <rdma/ib_addr.h>
52 #include <rdma/ib_cache.h>
53
54 #include <net/bonding.h>
55
56 #include <linux/mlx4/driver.h>
57 #include <linux/mlx4/cmd.h>
58 #include <linux/mlx4/qp.h>
59
60 #include "mlx4_ib.h"
61 #include <rdma/mlx4-abi.h>
62
63 #define DRV_NAME MLX4_IB_DRV_NAME
64 #define DRV_VERSION "4.0-0"
65
66 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
67 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
68 #define MLX4_IB_CARD_REV_A0 0xA0
69
70 MODULE_AUTHOR("Roland Dreier");
71 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
72 MODULE_LICENSE("Dual BSD/GPL");
73
74 int mlx4_ib_sm_guid_assign = 0;
75 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
76 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
77
78 static const char mlx4_ib_version[] =
79 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
80 DRV_VERSION "\n";
81
82 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
83 static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device,
84 u32 port_num);
85 static int mlx4_ib_event(struct notifier_block *this, unsigned long event,
86 void *param);
87
88 static struct workqueue_struct *wq;
89
check_flow_steering_support(struct mlx4_dev * dev)90 static int check_flow_steering_support(struct mlx4_dev *dev)
91 {
92 int eth_num_ports = 0;
93 int ib_num_ports = 0;
94
95 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
96
97 if (dmfs) {
98 int i;
99 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
100 eth_num_ports++;
101 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
102 ib_num_ports++;
103 dmfs &= (!ib_num_ports ||
104 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
105 (!eth_num_ports ||
106 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
107 if (ib_num_ports && mlx4_is_mfunc(dev)) {
108 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
109 dmfs = 0;
110 }
111 }
112 return dmfs;
113 }
114
num_ib_ports(struct mlx4_dev * dev)115 static int num_ib_ports(struct mlx4_dev *dev)
116 {
117 int ib_ports = 0;
118 int i;
119
120 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
121 ib_ports++;
122
123 return ib_ports;
124 }
125
mlx4_ib_get_netdev(struct ib_device * device,u32 port_num)126 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device,
127 u32 port_num)
128 {
129 struct mlx4_ib_dev *ibdev = to_mdev(device);
130 struct net_device *dev, *ret = NULL;
131
132 rcu_read_lock();
133 for_each_netdev_rcu(&init_net, dev) {
134 if (dev->dev.parent != ibdev->ib_dev.dev.parent ||
135 dev->dev_port + 1 != port_num)
136 continue;
137
138 if (mlx4_is_bonded(ibdev->dev)) {
139 struct net_device *upper;
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 dev_hold(dev);
152 ret = dev;
153 break;
154 }
155
156 rcu_read_unlock();
157 return ret;
158 }
159
mlx4_ib_update_gids_v1(struct gid_entry * gids,struct mlx4_ib_dev * ibdev,u32 port_num)160 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
161 struct mlx4_ib_dev *ibdev,
162 u32 port_num)
163 {
164 struct mlx4_cmd_mailbox *mailbox;
165 int err;
166 struct mlx4_dev *dev = ibdev->dev;
167 int i;
168 union ib_gid *gid_tbl;
169
170 mailbox = mlx4_alloc_cmd_mailbox(dev);
171 if (IS_ERR(mailbox))
172 return -ENOMEM;
173
174 gid_tbl = mailbox->buf;
175
176 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
177 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
178
179 err = mlx4_cmd(dev, mailbox->dma,
180 MLX4_SET_PORT_GID_TABLE << 8 | port_num,
181 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
182 MLX4_CMD_WRAPPED);
183 if (mlx4_is_bonded(dev))
184 err += mlx4_cmd(dev, mailbox->dma,
185 MLX4_SET_PORT_GID_TABLE << 8 | 2,
186 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
187 MLX4_CMD_WRAPPED);
188
189 mlx4_free_cmd_mailbox(dev, mailbox);
190 return err;
191 }
192
mlx4_ib_update_gids_v1_v2(struct gid_entry * gids,struct mlx4_ib_dev * ibdev,u32 port_num)193 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
194 struct mlx4_ib_dev *ibdev,
195 u32 port_num)
196 {
197 struct mlx4_cmd_mailbox *mailbox;
198 int err;
199 struct mlx4_dev *dev = ibdev->dev;
200 int i;
201 struct {
202 union ib_gid gid;
203 __be32 rsrvd1[2];
204 __be16 rsrvd2;
205 u8 type;
206 u8 version;
207 __be32 rsrvd3;
208 } *gid_tbl;
209
210 mailbox = mlx4_alloc_cmd_mailbox(dev);
211 if (IS_ERR(mailbox))
212 return -ENOMEM;
213
214 gid_tbl = mailbox->buf;
215 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
216 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
217 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
218 gid_tbl[i].version = 2;
219 if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
220 gid_tbl[i].type = 1;
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
mlx4_ib_update_gids(struct gid_entry * gids,struct mlx4_ib_dev * ibdev,u32 port_num)238 static int mlx4_ib_update_gids(struct gid_entry *gids,
239 struct mlx4_ib_dev *ibdev,
240 u32 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
free_gid_entry(struct gid_entry * entry)248 static void free_gid_entry(struct gid_entry *entry)
249 {
250 memset(&entry->gid, 0, sizeof(entry->gid));
251 kfree(entry->ctx);
252 entry->ctx = NULL;
253 }
254
mlx4_ib_add_gid(const struct ib_gid_attr * attr,void ** context)255 static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context)
256 {
257 struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
258 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
259 struct mlx4_port_gid_table *port_gid_table;
260 int free = -1, found = -1;
261 int ret = 0;
262 int hw_update = 0;
263 int i;
264 struct gid_entry *gids;
265 u16 vlan_id = 0xffff;
266 u8 mac[ETH_ALEN];
267
268 if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
269 return -EINVAL;
270
271 if (attr->port_num > MLX4_MAX_PORTS)
272 return -EINVAL;
273
274 if (!context)
275 return -EINVAL;
276
277 ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]);
278 if (ret)
279 return ret;
280 port_gid_table = &iboe->gids[attr->port_num - 1];
281 spin_lock_bh(&iboe->lock);
282 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
283 if (!memcmp(&port_gid_table->gids[i].gid,
284 &attr->gid, sizeof(attr->gid)) &&
285 port_gid_table->gids[i].gid_type == attr->gid_type &&
286 port_gid_table->gids[i].vlan_id == vlan_id) {
287 found = i;
288 break;
289 }
290 if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid))
291 free = i; /* HW has space */
292 }
293
294 if (found < 0) {
295 if (free < 0) {
296 ret = -ENOSPC;
297 } else {
298 port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
299 if (!port_gid_table->gids[free].ctx) {
300 ret = -ENOMEM;
301 } else {
302 *context = port_gid_table->gids[free].ctx;
303 port_gid_table->gids[free].gid = attr->gid;
304 port_gid_table->gids[free].gid_type = attr->gid_type;
305 port_gid_table->gids[free].vlan_id = vlan_id;
306 port_gid_table->gids[free].ctx->real_index = free;
307 port_gid_table->gids[free].ctx->refcount = 1;
308 hw_update = 1;
309 }
310 }
311 } else {
312 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
313 *context = ctx;
314 ctx->refcount++;
315 }
316 if (!ret && hw_update) {
317 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
318 GFP_ATOMIC);
319 if (!gids) {
320 ret = -ENOMEM;
321 *context = NULL;
322 free_gid_entry(&port_gid_table->gids[free]);
323 } else {
324 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
325 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
326 gids[i].gid_type = port_gid_table->gids[i].gid_type;
327 }
328 }
329 }
330 spin_unlock_bh(&iboe->lock);
331
332 if (!ret && hw_update) {
333 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
334 if (ret) {
335 spin_lock_bh(&iboe->lock);
336 *context = NULL;
337 free_gid_entry(&port_gid_table->gids[free]);
338 spin_unlock_bh(&iboe->lock);
339 }
340 kfree(gids);
341 }
342
343 return ret;
344 }
345
mlx4_ib_del_gid(const struct ib_gid_attr * attr,void ** context)346 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context)
347 {
348 struct gid_cache_context *ctx = *context;
349 struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
350 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
351 struct mlx4_port_gid_table *port_gid_table;
352 int ret = 0;
353 int hw_update = 0;
354 struct gid_entry *gids;
355
356 if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
357 return -EINVAL;
358
359 if (attr->port_num > MLX4_MAX_PORTS)
360 return -EINVAL;
361
362 port_gid_table = &iboe->gids[attr->port_num - 1];
363 spin_lock_bh(&iboe->lock);
364 if (ctx) {
365 ctx->refcount--;
366 if (!ctx->refcount) {
367 unsigned int real_index = ctx->real_index;
368
369 free_gid_entry(&port_gid_table->gids[real_index]);
370 hw_update = 1;
371 }
372 }
373 if (!ret && hw_update) {
374 int i;
375
376 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
377 GFP_ATOMIC);
378 if (!gids) {
379 ret = -ENOMEM;
380 } else {
381 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
382 memcpy(&gids[i].gid,
383 &port_gid_table->gids[i].gid,
384 sizeof(union ib_gid));
385 gids[i].gid_type =
386 port_gid_table->gids[i].gid_type;
387 }
388 }
389 }
390 spin_unlock_bh(&iboe->lock);
391
392 if (!ret && hw_update) {
393 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
394 kfree(gids);
395 }
396 return ret;
397 }
398
mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev * ibdev,const struct ib_gid_attr * attr)399 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
400 const struct ib_gid_attr *attr)
401 {
402 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
403 struct gid_cache_context *ctx = NULL;
404 struct mlx4_port_gid_table *port_gid_table;
405 int real_index = -EINVAL;
406 int i;
407 unsigned long flags;
408 u32 port_num = attr->port_num;
409
410 if (port_num > MLX4_MAX_PORTS)
411 return -EINVAL;
412
413 if (mlx4_is_bonded(ibdev->dev))
414 port_num = 1;
415
416 if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
417 return attr->index;
418
419 spin_lock_irqsave(&iboe->lock, flags);
420 port_gid_table = &iboe->gids[port_num - 1];
421
422 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
423 if (!memcmp(&port_gid_table->gids[i].gid,
424 &attr->gid, sizeof(attr->gid)) &&
425 attr->gid_type == port_gid_table->gids[i].gid_type) {
426 ctx = port_gid_table->gids[i].ctx;
427 break;
428 }
429 if (ctx)
430 real_index = ctx->real_index;
431 spin_unlock_irqrestore(&iboe->lock, flags);
432 return real_index;
433 }
434
mlx4_ib_query_device(struct ib_device * ibdev,struct ib_device_attr * props,struct ib_udata * uhw)435 static int mlx4_ib_query_device(struct ib_device *ibdev,
436 struct ib_device_attr *props,
437 struct ib_udata *uhw)
438 {
439 struct mlx4_ib_dev *dev = to_mdev(ibdev);
440 struct ib_smp *in_mad;
441 struct ib_smp *out_mad;
442 int err;
443 int have_ib_ports;
444 struct mlx4_uverbs_ex_query_device cmd;
445 struct mlx4_uverbs_ex_query_device_resp resp = {};
446 struct mlx4_clock_params clock_params;
447
448 if (uhw->inlen) {
449 if (uhw->inlen < sizeof(cmd))
450 return -EINVAL;
451
452 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
453 if (err)
454 return err;
455
456 if (cmd.comp_mask)
457 return -EINVAL;
458
459 if (cmd.reserved)
460 return -EINVAL;
461 }
462
463 resp.response_length = offsetof(typeof(resp), response_length) +
464 sizeof(resp.response_length);
465 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
466 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
467 err = -ENOMEM;
468 if (!in_mad || !out_mad)
469 goto out;
470
471 ib_init_query_mad(in_mad);
472 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
473
474 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
475 1, NULL, NULL, in_mad, out_mad);
476 if (err)
477 goto out;
478
479 memset(props, 0, sizeof *props);
480
481 have_ib_ports = num_ib_ports(dev->dev);
482
483 props->fw_ver = dev->dev->caps.fw_ver;
484 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
485 IB_DEVICE_PORT_ACTIVE_EVENT |
486 IB_DEVICE_SYS_IMAGE_GUID |
487 IB_DEVICE_RC_RNR_NAK_GEN;
488 props->kernel_cap_flags = IBK_BLOCK_MULTICAST_LOOPBACK;
489 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
490 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
491 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
492 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
493 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
494 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
495 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
496 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
497 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
498 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
499 if (dev->dev->caps.max_gso_sz &&
500 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
501 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
502 props->kernel_cap_flags |= IBK_UD_TSO;
503 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
504 props->kernel_cap_flags |= IBK_LOCAL_DMA_LKEY;
505 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
506 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
507 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
508 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
509 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
510 props->device_cap_flags |= IB_DEVICE_XRC;
511 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
512 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
513 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
514 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
515 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
516 else
517 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
518 }
519 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
520 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
521
522 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
523
524 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
525 0xffffff;
526 props->vendor_part_id = dev->dev->persist->pdev->device;
527 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
528 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
529
530 props->max_mr_size = ~0ull;
531 props->page_size_cap = dev->dev->caps.page_size_cap;
532 props->max_qp = dev->dev->quotas.qp;
533 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
534 props->max_send_sge =
535 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
536 props->max_recv_sge =
537 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
538 props->max_sge_rd = MLX4_MAX_SGE_RD;
539 props->max_cq = dev->dev->quotas.cq;
540 props->max_cqe = dev->dev->caps.max_cqes;
541 props->max_mr = dev->dev->quotas.mpt;
542 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
543 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
544 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
545 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
546 props->max_srq = dev->dev->quotas.srq;
547 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
548 props->max_srq_sge = dev->dev->caps.max_srq_sge;
549 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
550 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
551 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
552 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
553 props->masked_atomic_cap = props->atomic_cap;
554 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
555 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
556 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
557 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
558 props->max_mcast_grp;
559 props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
560 props->timestamp_mask = 0xFFFFFFFFFFFFULL;
561 props->max_ah = INT_MAX;
562
563 if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
564 mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) {
565 if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) {
566 props->rss_caps.max_rwq_indirection_tables =
567 props->max_qp;
568 props->rss_caps.max_rwq_indirection_table_size =
569 dev->dev->caps.max_rss_tbl_sz;
570 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
571 props->max_wq_type_rq = props->max_qp;
572 }
573
574 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
575 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
576 }
577
578 props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
579 props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
580
581 if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
582 resp.response_length += sizeof(resp.hca_core_clock_offset);
583 if (!mlx4_get_internal_clock_params(dev->dev, &clock_params)) {
584 resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET;
585 resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
586 }
587 }
588
589 if (uhw->outlen >= resp.response_length +
590 sizeof(resp.max_inl_recv_sz)) {
591 resp.response_length += sizeof(resp.max_inl_recv_sz);
592 resp.max_inl_recv_sz = dev->dev->caps.max_rq_sg *
593 sizeof(struct mlx4_wqe_data_seg);
594 }
595
596 if (offsetofend(typeof(resp), rss_caps) <= uhw->outlen) {
597 if (props->rss_caps.supported_qpts) {
598 resp.rss_caps.rx_hash_function =
599 MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
600
601 resp.rss_caps.rx_hash_fields_mask =
602 MLX4_IB_RX_HASH_SRC_IPV4 |
603 MLX4_IB_RX_HASH_DST_IPV4 |
604 MLX4_IB_RX_HASH_SRC_IPV6 |
605 MLX4_IB_RX_HASH_DST_IPV6 |
606 MLX4_IB_RX_HASH_SRC_PORT_TCP |
607 MLX4_IB_RX_HASH_DST_PORT_TCP |
608 MLX4_IB_RX_HASH_SRC_PORT_UDP |
609 MLX4_IB_RX_HASH_DST_PORT_UDP;
610
611 if (dev->dev->caps.tunnel_offload_mode ==
612 MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
613 resp.rss_caps.rx_hash_fields_mask |=
614 MLX4_IB_RX_HASH_INNER;
615 }
616 resp.response_length = offsetof(typeof(resp), rss_caps) +
617 sizeof(resp.rss_caps);
618 }
619
620 if (offsetofend(typeof(resp), tso_caps) <= uhw->outlen) {
621 if (dev->dev->caps.max_gso_sz &&
622 ((mlx4_ib_port_link_layer(ibdev, 1) ==
623 IB_LINK_LAYER_ETHERNET) ||
624 (mlx4_ib_port_link_layer(ibdev, 2) ==
625 IB_LINK_LAYER_ETHERNET))) {
626 resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz;
627 resp.tso_caps.supported_qpts |=
628 1 << IB_QPT_RAW_PACKET;
629 }
630 resp.response_length = offsetof(typeof(resp), tso_caps) +
631 sizeof(resp.tso_caps);
632 }
633
634 if (uhw->outlen) {
635 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
636 if (err)
637 goto out;
638 }
639 out:
640 kfree(in_mad);
641 kfree(out_mad);
642
643 return err;
644 }
645
646 static enum rdma_link_layer
mlx4_ib_port_link_layer(struct ib_device * device,u32 port_num)647 mlx4_ib_port_link_layer(struct ib_device *device, u32 port_num)
648 {
649 struct mlx4_dev *dev = to_mdev(device)->dev;
650
651 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
652 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
653 }
654
ib_link_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props,int netw_view)655 static int ib_link_query_port(struct ib_device *ibdev, u32 port,
656 struct ib_port_attr *props, int netw_view)
657 {
658 struct ib_smp *in_mad;
659 struct ib_smp *out_mad;
660 int ext_active_speed;
661 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
662 int err = -ENOMEM;
663
664 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
665 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
666 if (!in_mad || !out_mad)
667 goto out;
668
669 ib_init_query_mad(in_mad);
670 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
671 in_mad->attr_mod = cpu_to_be32(port);
672
673 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
674 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
675
676 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
677 in_mad, out_mad);
678 if (err)
679 goto out;
680
681
682 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
683 props->lmc = out_mad->data[34] & 0x7;
684 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
685 props->sm_sl = out_mad->data[36] & 0xf;
686 props->state = out_mad->data[32] & 0xf;
687 props->phys_state = out_mad->data[33] >> 4;
688 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
689 if (netw_view)
690 props->gid_tbl_len = out_mad->data[50];
691 else
692 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
693 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
694 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
695 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
696 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
697 props->active_width = out_mad->data[31] & 0xf;
698 props->active_speed = out_mad->data[35] >> 4;
699 props->max_mtu = out_mad->data[41] & 0xf;
700 props->active_mtu = out_mad->data[36] >> 4;
701 props->subnet_timeout = out_mad->data[51] & 0x1f;
702 props->max_vl_num = out_mad->data[37] >> 4;
703 props->init_type_reply = out_mad->data[41] >> 4;
704
705 /* Check if extended speeds (EDR/FDR/...) are supported */
706 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
707 ext_active_speed = out_mad->data[62] >> 4;
708
709 switch (ext_active_speed) {
710 case 1:
711 props->active_speed = IB_SPEED_FDR;
712 break;
713 case 2:
714 props->active_speed = IB_SPEED_EDR;
715 break;
716 }
717 }
718
719 /* If reported active speed is QDR, check if is FDR-10 */
720 if (props->active_speed == IB_SPEED_QDR) {
721 ib_init_query_mad(in_mad);
722 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
723 in_mad->attr_mod = cpu_to_be32(port);
724
725 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
726 NULL, NULL, in_mad, out_mad);
727 if (err)
728 goto out;
729
730 /* Checking LinkSpeedActive for FDR-10 */
731 if (out_mad->data[15] & 0x1)
732 props->active_speed = IB_SPEED_FDR10;
733 }
734
735 /* Avoid wrong speed value returned by FW if the IB link is down. */
736 if (props->state == IB_PORT_DOWN)
737 props->active_speed = IB_SPEED_SDR;
738
739 out:
740 kfree(in_mad);
741 kfree(out_mad);
742 return err;
743 }
744
state_to_phys_state(enum ib_port_state state)745 static u8 state_to_phys_state(enum ib_port_state state)
746 {
747 return state == IB_PORT_ACTIVE ?
748 IB_PORT_PHYS_STATE_LINK_UP : IB_PORT_PHYS_STATE_DISABLED;
749 }
750
eth_link_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props)751 static int eth_link_query_port(struct ib_device *ibdev, u32 port,
752 struct ib_port_attr *props)
753 {
754
755 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
756 struct mlx4_ib_iboe *iboe = &mdev->iboe;
757 struct net_device *ndev;
758 enum ib_mtu tmp;
759 struct mlx4_cmd_mailbox *mailbox;
760 int err = 0;
761 int is_bonded = mlx4_is_bonded(mdev->dev);
762
763 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
764 if (IS_ERR(mailbox))
765 return PTR_ERR(mailbox);
766
767 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
768 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
769 MLX4_CMD_WRAPPED);
770 if (err)
771 goto out;
772
773 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ||
774 (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
775 IB_WIDTH_4X : IB_WIDTH_1X;
776 props->active_speed = (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
777 IB_SPEED_FDR : IB_SPEED_QDR;
778 props->port_cap_flags = IB_PORT_CM_SUP;
779 props->ip_gids = true;
780 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
781 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
782 if (mdev->dev->caps.pkey_table_len[port])
783 props->pkey_tbl_len = 1;
784 props->max_mtu = IB_MTU_4096;
785 props->max_vl_num = 2;
786 props->state = IB_PORT_DOWN;
787 props->phys_state = state_to_phys_state(props->state);
788 props->active_mtu = IB_MTU_256;
789 spin_lock_bh(&iboe->lock);
790 ndev = iboe->netdevs[port - 1];
791 if (ndev && is_bonded) {
792 rcu_read_lock(); /* required to get upper dev */
793 ndev = netdev_master_upper_dev_get_rcu(ndev);
794 rcu_read_unlock();
795 }
796 if (!ndev)
797 goto out_unlock;
798
799 tmp = iboe_get_mtu(ndev->mtu);
800 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
801
802 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
803 IB_PORT_ACTIVE : IB_PORT_DOWN;
804 props->phys_state = state_to_phys_state(props->state);
805 out_unlock:
806 spin_unlock_bh(&iboe->lock);
807 out:
808 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
809 return err;
810 }
811
__mlx4_ib_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props,int netw_view)812 int __mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
813 struct ib_port_attr *props, int netw_view)
814 {
815 int err;
816
817 /* props being zeroed by the caller, avoid zeroing it here */
818
819 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
820 ib_link_query_port(ibdev, port, props, netw_view) :
821 eth_link_query_port(ibdev, port, props);
822
823 return err;
824 }
825
mlx4_ib_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props)826 static int mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
827 struct ib_port_attr *props)
828 {
829 /* returns host view */
830 return __mlx4_ib_query_port(ibdev, port, props, 0);
831 }
832
__mlx4_ib_query_gid(struct ib_device * ibdev,u32 port,int index,union ib_gid * gid,int netw_view)833 int __mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
834 union ib_gid *gid, int netw_view)
835 {
836 struct ib_smp *in_mad;
837 struct ib_smp *out_mad;
838 int err = -ENOMEM;
839 struct mlx4_ib_dev *dev = to_mdev(ibdev);
840 int clear = 0;
841 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
842
843 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
844 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
845 if (!in_mad || !out_mad)
846 goto out;
847
848 ib_init_query_mad(in_mad);
849 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
850 in_mad->attr_mod = cpu_to_be32(port);
851
852 if (mlx4_is_mfunc(dev->dev) && netw_view)
853 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
854
855 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
856 if (err)
857 goto out;
858
859 memcpy(gid->raw, out_mad->data + 8, 8);
860
861 if (mlx4_is_mfunc(dev->dev) && !netw_view) {
862 if (index) {
863 /* For any index > 0, return the null guid */
864 err = 0;
865 clear = 1;
866 goto out;
867 }
868 }
869
870 ib_init_query_mad(in_mad);
871 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
872 in_mad->attr_mod = cpu_to_be32(index / 8);
873
874 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
875 NULL, NULL, in_mad, out_mad);
876 if (err)
877 goto out;
878
879 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
880
881 out:
882 if (clear)
883 memset(gid->raw + 8, 0, 8);
884 kfree(in_mad);
885 kfree(out_mad);
886 return err;
887 }
888
mlx4_ib_query_gid(struct ib_device * ibdev,u32 port,int index,union ib_gid * gid)889 static int mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
890 union ib_gid *gid)
891 {
892 if (rdma_protocol_ib(ibdev, port))
893 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
894 return 0;
895 }
896
mlx4_ib_query_sl2vl(struct ib_device * ibdev,u32 port,u64 * sl2vl_tbl)897 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u32 port,
898 u64 *sl2vl_tbl)
899 {
900 union sl2vl_tbl_to_u64 sl2vl64;
901 struct ib_smp *in_mad;
902 struct ib_smp *out_mad;
903 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
904 int err = -ENOMEM;
905 int jj;
906
907 if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
908 *sl2vl_tbl = 0;
909 return 0;
910 }
911
912 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
913 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
914 if (!in_mad || !out_mad)
915 goto out;
916
917 ib_init_query_mad(in_mad);
918 in_mad->attr_id = IB_SMP_ATTR_SL_TO_VL_TABLE;
919 in_mad->attr_mod = 0;
920
921 if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
922 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
923
924 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
925 in_mad, out_mad);
926 if (err)
927 goto out;
928
929 for (jj = 0; jj < 8; jj++)
930 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
931 *sl2vl_tbl = sl2vl64.sl64;
932
933 out:
934 kfree(in_mad);
935 kfree(out_mad);
936 return err;
937 }
938
mlx4_init_sl2vl_tbl(struct mlx4_ib_dev * mdev)939 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
940 {
941 u64 sl2vl;
942 int i;
943 int err;
944
945 for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
946 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
947 continue;
948 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
949 if (err) {
950 pr_err("Unable to get default sl to vl mapping for port %d. Using all zeroes (%d)\n",
951 i, err);
952 sl2vl = 0;
953 }
954 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
955 }
956 }
957
__mlx4_ib_query_pkey(struct ib_device * ibdev,u32 port,u16 index,u16 * pkey,int netw_view)958 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
959 u16 *pkey, int netw_view)
960 {
961 struct ib_smp *in_mad;
962 struct ib_smp *out_mad;
963 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
964 int err = -ENOMEM;
965
966 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
967 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
968 if (!in_mad || !out_mad)
969 goto out;
970
971 ib_init_query_mad(in_mad);
972 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
973 in_mad->attr_mod = cpu_to_be32(index / 32);
974
975 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
976 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
977
978 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
979 in_mad, out_mad);
980 if (err)
981 goto out;
982
983 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
984
985 out:
986 kfree(in_mad);
987 kfree(out_mad);
988 return err;
989 }
990
mlx4_ib_query_pkey(struct ib_device * ibdev,u32 port,u16 index,u16 * pkey)991 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
992 u16 *pkey)
993 {
994 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
995 }
996
mlx4_ib_modify_device(struct ib_device * ibdev,int mask,struct ib_device_modify * props)997 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
998 struct ib_device_modify *props)
999 {
1000 struct mlx4_cmd_mailbox *mailbox;
1001 unsigned long flags;
1002
1003 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
1004 return -EOPNOTSUPP;
1005
1006 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1007 return 0;
1008
1009 if (mlx4_is_slave(to_mdev(ibdev)->dev))
1010 return -EOPNOTSUPP;
1011
1012 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
1013 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1014 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
1015
1016 /*
1017 * If possible, pass node desc to FW, so it can generate
1018 * a 144 trap. If cmd fails, just ignore.
1019 */
1020 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
1021 if (IS_ERR(mailbox))
1022 return 0;
1023
1024 memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1025 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
1026 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1027
1028 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
1029
1030 return 0;
1031 }
1032
mlx4_ib_SET_PORT(struct mlx4_ib_dev * dev,u32 port,int reset_qkey_viols,u32 cap_mask)1033 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u32 port,
1034 int reset_qkey_viols, u32 cap_mask)
1035 {
1036 struct mlx4_cmd_mailbox *mailbox;
1037 int err;
1038
1039 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
1040 if (IS_ERR(mailbox))
1041 return PTR_ERR(mailbox);
1042
1043 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1044 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
1045 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
1046 } else {
1047 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
1048 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
1049 }
1050
1051 err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
1052 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1053 MLX4_CMD_WRAPPED);
1054
1055 mlx4_free_cmd_mailbox(dev->dev, mailbox);
1056 return err;
1057 }
1058
mlx4_ib_modify_port(struct ib_device * ibdev,u32 port,int mask,struct ib_port_modify * props)1059 static int mlx4_ib_modify_port(struct ib_device *ibdev, u32 port, int mask,
1060 struct ib_port_modify *props)
1061 {
1062 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1063 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1064 struct ib_port_attr attr;
1065 u32 cap_mask;
1066 int err;
1067
1068 /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1069 * of whether port link layer is ETH or IB. For ETH ports, qkey
1070 * violations and port capabilities are not meaningful.
1071 */
1072 if (is_eth)
1073 return 0;
1074
1075 mutex_lock(&mdev->cap_mask_mutex);
1076
1077 err = ib_query_port(ibdev, port, &attr);
1078 if (err)
1079 goto out;
1080
1081 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1082 ~props->clr_port_cap_mask;
1083
1084 err = mlx4_ib_SET_PORT(mdev, port,
1085 !!(mask & IB_PORT_RESET_QKEY_CNTR),
1086 cap_mask);
1087
1088 out:
1089 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1090 return err;
1091 }
1092
mlx4_ib_alloc_ucontext(struct ib_ucontext * uctx,struct ib_udata * udata)1093 static int mlx4_ib_alloc_ucontext(struct ib_ucontext *uctx,
1094 struct ib_udata *udata)
1095 {
1096 struct ib_device *ibdev = uctx->device;
1097 struct mlx4_ib_dev *dev = to_mdev(ibdev);
1098 struct mlx4_ib_ucontext *context = to_mucontext(uctx);
1099 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1100 struct mlx4_ib_alloc_ucontext_resp resp;
1101 int err;
1102
1103 if (!dev->ib_active)
1104 return -EAGAIN;
1105
1106 if (ibdev->ops.uverbs_abi_ver ==
1107 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1108 resp_v3.qp_tab_size = dev->dev->caps.num_qps;
1109 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size;
1110 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1111 } else {
1112 resp.dev_caps = dev->dev->caps.userspace_caps;
1113 resp.qp_tab_size = dev->dev->caps.num_qps;
1114 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
1115 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1116 resp.cqe_size = dev->dev->caps.cqe_size;
1117 }
1118
1119 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1120 if (err)
1121 return err;
1122
1123 INIT_LIST_HEAD(&context->db_page_list);
1124 mutex_init(&context->db_page_mutex);
1125
1126 INIT_LIST_HEAD(&context->wqn_ranges_list);
1127 mutex_init(&context->wqn_ranges_mutex);
1128
1129 if (ibdev->ops.uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1130 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1131 else
1132 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1133
1134 if (err) {
1135 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1136 return -EFAULT;
1137 }
1138
1139 return err;
1140 }
1141
mlx4_ib_dealloc_ucontext(struct ib_ucontext * ibcontext)1142 static void mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1143 {
1144 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1145
1146 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1147 }
1148
mlx4_ib_disassociate_ucontext(struct ib_ucontext * ibcontext)1149 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1150 {
1151 }
1152
mlx4_ib_mmap(struct ib_ucontext * context,struct vm_area_struct * vma)1153 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1154 {
1155 struct mlx4_ib_dev *dev = to_mdev(context->device);
1156
1157 switch (vma->vm_pgoff) {
1158 case 0:
1159 return rdma_user_mmap_io(context, vma,
1160 to_mucontext(context)->uar.pfn,
1161 PAGE_SIZE,
1162 pgprot_noncached(vma->vm_page_prot),
1163 NULL);
1164
1165 case 1:
1166 if (dev->dev->caps.bf_reg_size == 0)
1167 return -EINVAL;
1168 return rdma_user_mmap_io(
1169 context, vma,
1170 to_mucontext(context)->uar.pfn +
1171 dev->dev->caps.num_uars,
1172 PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot),
1173 NULL);
1174
1175 case 3: {
1176 struct mlx4_clock_params params;
1177 int ret;
1178
1179 ret = mlx4_get_internal_clock_params(dev->dev, ¶ms);
1180 if (ret)
1181 return ret;
1182
1183 return rdma_user_mmap_io(
1184 context, vma,
1185 (pci_resource_start(dev->dev->persist->pdev,
1186 params.bar) +
1187 params.offset) >>
1188 PAGE_SHIFT,
1189 PAGE_SIZE, pgprot_noncached(vma->vm_page_prot),
1190 NULL);
1191 }
1192
1193 default:
1194 return -EINVAL;
1195 }
1196 }
1197
mlx4_ib_alloc_pd(struct ib_pd * ibpd,struct ib_udata * udata)1198 static int mlx4_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
1199 {
1200 struct mlx4_ib_pd *pd = to_mpd(ibpd);
1201 struct ib_device *ibdev = ibpd->device;
1202 int err;
1203
1204 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1205 if (err)
1206 return err;
1207
1208 if (udata && ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) {
1209 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1210 return -EFAULT;
1211 }
1212 return 0;
1213 }
1214
mlx4_ib_dealloc_pd(struct ib_pd * pd,struct ib_udata * udata)1215 static int mlx4_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
1216 {
1217 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1218 return 0;
1219 }
1220
mlx4_ib_alloc_xrcd(struct ib_xrcd * ibxrcd,struct ib_udata * udata)1221 static int mlx4_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
1222 {
1223 struct mlx4_ib_dev *dev = to_mdev(ibxrcd->device);
1224 struct mlx4_ib_xrcd *xrcd = to_mxrcd(ibxrcd);
1225 struct ib_cq_init_attr cq_attr = {};
1226 int err;
1227
1228 if (!(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1229 return -EOPNOTSUPP;
1230
1231 err = mlx4_xrcd_alloc(dev->dev, &xrcd->xrcdn);
1232 if (err)
1233 return err;
1234
1235 xrcd->pd = ib_alloc_pd(ibxrcd->device, 0);
1236 if (IS_ERR(xrcd->pd)) {
1237 err = PTR_ERR(xrcd->pd);
1238 goto err2;
1239 }
1240
1241 cq_attr.cqe = 1;
1242 xrcd->cq = ib_create_cq(ibxrcd->device, NULL, NULL, xrcd, &cq_attr);
1243 if (IS_ERR(xrcd->cq)) {
1244 err = PTR_ERR(xrcd->cq);
1245 goto err3;
1246 }
1247
1248 return 0;
1249
1250 err3:
1251 ib_dealloc_pd(xrcd->pd);
1252 err2:
1253 mlx4_xrcd_free(dev->dev, xrcd->xrcdn);
1254 return err;
1255 }
1256
mlx4_ib_dealloc_xrcd(struct ib_xrcd * xrcd,struct ib_udata * udata)1257 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
1258 {
1259 ib_destroy_cq(to_mxrcd(xrcd)->cq);
1260 ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1261 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1262 return 0;
1263 }
1264
add_gid_entry(struct ib_qp * ibqp,union ib_gid * gid)1265 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1266 {
1267 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1268 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1269 struct mlx4_ib_gid_entry *ge;
1270
1271 ge = kzalloc(sizeof *ge, GFP_KERNEL);
1272 if (!ge)
1273 return -ENOMEM;
1274
1275 ge->gid = *gid;
1276 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1277 ge->port = mqp->port;
1278 ge->added = 1;
1279 }
1280
1281 mutex_lock(&mqp->mutex);
1282 list_add_tail(&ge->list, &mqp->gid_list);
1283 mutex_unlock(&mqp->mutex);
1284
1285 return 0;
1286 }
1287
mlx4_ib_delete_counters_table(struct mlx4_ib_dev * ibdev,struct mlx4_ib_counters * ctr_table)1288 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1289 struct mlx4_ib_counters *ctr_table)
1290 {
1291 struct counter_index *counter, *tmp_count;
1292
1293 mutex_lock(&ctr_table->mutex);
1294 list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1295 list) {
1296 if (counter->allocated)
1297 mlx4_counter_free(ibdev->dev, counter->index);
1298 list_del(&counter->list);
1299 kfree(counter);
1300 }
1301 mutex_unlock(&ctr_table->mutex);
1302 }
1303
mlx4_ib_add_mc(struct mlx4_ib_dev * mdev,struct mlx4_ib_qp * mqp,union ib_gid * gid)1304 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1305 union ib_gid *gid)
1306 {
1307 struct net_device *ndev;
1308 int ret = 0;
1309
1310 if (!mqp->port)
1311 return 0;
1312
1313 spin_lock_bh(&mdev->iboe.lock);
1314 ndev = mdev->iboe.netdevs[mqp->port - 1];
1315 dev_hold(ndev);
1316 spin_unlock_bh(&mdev->iboe.lock);
1317
1318 if (ndev) {
1319 ret = 1;
1320 dev_put(ndev);
1321 }
1322
1323 return ret;
1324 }
1325
1326 struct mlx4_ib_steering {
1327 struct list_head list;
1328 struct mlx4_flow_reg_id reg_id;
1329 union ib_gid gid;
1330 };
1331
1332 #define LAST_ETH_FIELD vlan_tag
1333 #define LAST_IB_FIELD sl
1334 #define LAST_IPV4_FIELD dst_ip
1335 #define LAST_TCP_UDP_FIELD src_port
1336
1337 /* Field is the last supported field */
1338 #define FIELDS_NOT_SUPPORTED(filter, field)\
1339 memchr_inv((void *)&filter.field +\
1340 sizeof(filter.field), 0,\
1341 sizeof(filter) -\
1342 offsetof(typeof(filter), field) -\
1343 sizeof(filter.field))
1344
parse_flow_attr(struct mlx4_dev * dev,u32 qp_num,union ib_flow_spec * ib_spec,struct _rule_hw * mlx4_spec)1345 static int parse_flow_attr(struct mlx4_dev *dev,
1346 u32 qp_num,
1347 union ib_flow_spec *ib_spec,
1348 struct _rule_hw *mlx4_spec)
1349 {
1350 enum mlx4_net_trans_rule_id type;
1351
1352 switch (ib_spec->type) {
1353 case IB_FLOW_SPEC_ETH:
1354 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1355 return -ENOTSUPP;
1356
1357 type = MLX4_NET_TRANS_RULE_ID_ETH;
1358 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1359 ETH_ALEN);
1360 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1361 ETH_ALEN);
1362 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1363 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1364 break;
1365 case IB_FLOW_SPEC_IB:
1366 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1367 return -ENOTSUPP;
1368
1369 type = MLX4_NET_TRANS_RULE_ID_IB;
1370 mlx4_spec->ib.l3_qpn =
1371 cpu_to_be32(qp_num);
1372 mlx4_spec->ib.qpn_mask =
1373 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1374 break;
1375
1376
1377 case IB_FLOW_SPEC_IPV4:
1378 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1379 return -ENOTSUPP;
1380
1381 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1382 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1383 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1384 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1385 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1386 break;
1387
1388 case IB_FLOW_SPEC_TCP:
1389 case IB_FLOW_SPEC_UDP:
1390 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1391 return -ENOTSUPP;
1392
1393 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1394 MLX4_NET_TRANS_RULE_ID_TCP :
1395 MLX4_NET_TRANS_RULE_ID_UDP;
1396 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1397 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1398 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1399 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1400 break;
1401
1402 default:
1403 return -EINVAL;
1404 }
1405 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1406 mlx4_hw_rule_sz(dev, type) < 0)
1407 return -EINVAL;
1408 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1409 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1410 return mlx4_hw_rule_sz(dev, type);
1411 }
1412
1413 struct default_rules {
1414 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1415 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1416 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1417 __u8 link_layer;
1418 };
1419 static const struct default_rules default_table[] = {
1420 {
1421 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1422 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1423 .rules_create_list = {IB_FLOW_SPEC_IB},
1424 .link_layer = IB_LINK_LAYER_INFINIBAND
1425 }
1426 };
1427
__mlx4_ib_default_rules_match(struct ib_qp * qp,struct ib_flow_attr * flow_attr)1428 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1429 struct ib_flow_attr *flow_attr)
1430 {
1431 int i, j, k;
1432 void *ib_flow;
1433 const struct default_rules *pdefault_rules = default_table;
1434 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1435
1436 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1437 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1438 memset(&field_types, 0, sizeof(field_types));
1439
1440 if (link_layer != pdefault_rules->link_layer)
1441 continue;
1442
1443 ib_flow = flow_attr + 1;
1444 /* we assume the specs are sorted */
1445 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1446 j < flow_attr->num_of_specs; k++) {
1447 union ib_flow_spec *current_flow =
1448 (union ib_flow_spec *)ib_flow;
1449
1450 /* same layer but different type */
1451 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1452 (pdefault_rules->mandatory_fields[k] &
1453 IB_FLOW_SPEC_LAYER_MASK)) &&
1454 (current_flow->type !=
1455 pdefault_rules->mandatory_fields[k]))
1456 goto out;
1457
1458 /* same layer, try match next one */
1459 if (current_flow->type ==
1460 pdefault_rules->mandatory_fields[k]) {
1461 j++;
1462 ib_flow +=
1463 ((union ib_flow_spec *)ib_flow)->size;
1464 }
1465 }
1466
1467 ib_flow = flow_attr + 1;
1468 for (j = 0; j < flow_attr->num_of_specs;
1469 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1470 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1471 /* same layer and same type */
1472 if (((union ib_flow_spec *)ib_flow)->type ==
1473 pdefault_rules->mandatory_not_fields[k])
1474 goto out;
1475
1476 return i;
1477 }
1478 out:
1479 return -1;
1480 }
1481
__mlx4_ib_create_default_rules(struct mlx4_ib_dev * mdev,struct ib_qp * qp,const struct default_rules * pdefault_rules,struct _rule_hw * mlx4_spec)1482 static int __mlx4_ib_create_default_rules(
1483 struct mlx4_ib_dev *mdev,
1484 struct ib_qp *qp,
1485 const struct default_rules *pdefault_rules,
1486 struct _rule_hw *mlx4_spec) {
1487 int size = 0;
1488 int i;
1489
1490 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1491 union ib_flow_spec ib_spec = {};
1492 int ret;
1493
1494 switch (pdefault_rules->rules_create_list[i]) {
1495 case 0:
1496 /* no rule */
1497 continue;
1498 case IB_FLOW_SPEC_IB:
1499 ib_spec.type = IB_FLOW_SPEC_IB;
1500 ib_spec.size = sizeof(struct ib_flow_spec_ib);
1501
1502 break;
1503 default:
1504 /* invalid rule */
1505 return -EINVAL;
1506 }
1507 /* We must put empty rule, qpn is being ignored */
1508 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1509 mlx4_spec);
1510 if (ret < 0) {
1511 pr_info("invalid parsing\n");
1512 return -EINVAL;
1513 }
1514
1515 mlx4_spec = (void *)mlx4_spec + ret;
1516 size += ret;
1517 }
1518 return size;
1519 }
1520
__mlx4_ib_create_flow(struct ib_qp * qp,struct ib_flow_attr * flow_attr,int domain,enum mlx4_net_trans_promisc_mode flow_type,u64 * reg_id)1521 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1522 int domain,
1523 enum mlx4_net_trans_promisc_mode flow_type,
1524 u64 *reg_id)
1525 {
1526 int ret, i;
1527 int size = 0;
1528 void *ib_flow;
1529 struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1530 struct mlx4_cmd_mailbox *mailbox;
1531 struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1532 int default_flow;
1533
1534 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1535 pr_err("Invalid priority value %d\n", flow_attr->priority);
1536 return -EINVAL;
1537 }
1538
1539 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1540 return -EINVAL;
1541
1542 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1543 if (IS_ERR(mailbox))
1544 return PTR_ERR(mailbox);
1545 ctrl = mailbox->buf;
1546
1547 ctrl->prio = cpu_to_be16(domain | flow_attr->priority);
1548 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1549 ctrl->port = flow_attr->port;
1550 ctrl->qpn = cpu_to_be32(qp->qp_num);
1551
1552 ib_flow = flow_attr + 1;
1553 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1554 /* Add default flows */
1555 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1556 if (default_flow >= 0) {
1557 ret = __mlx4_ib_create_default_rules(
1558 mdev, qp, default_table + default_flow,
1559 mailbox->buf + size);
1560 if (ret < 0) {
1561 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1562 return -EINVAL;
1563 }
1564 size += ret;
1565 }
1566 for (i = 0; i < flow_attr->num_of_specs; i++) {
1567 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1568 mailbox->buf + size);
1569 if (ret < 0) {
1570 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1571 return -EINVAL;
1572 }
1573 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1574 size += ret;
1575 }
1576
1577 if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1578 flow_attr->num_of_specs == 1) {
1579 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1580 enum ib_flow_spec_type header_spec =
1581 ((union ib_flow_spec *)(flow_attr + 1))->type;
1582
1583 if (header_spec == IB_FLOW_SPEC_ETH)
1584 mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1585 }
1586
1587 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1588 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1589 MLX4_CMD_NATIVE);
1590 if (ret == -ENOMEM)
1591 pr_err("mcg table is full. Fail to register network rule.\n");
1592 else if (ret == -ENXIO)
1593 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1594 else if (ret)
1595 pr_err("Invalid argument. Fail to register network rule.\n");
1596
1597 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1598 return ret;
1599 }
1600
__mlx4_ib_destroy_flow(struct mlx4_dev * dev,u64 reg_id)1601 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1602 {
1603 int err;
1604 err = mlx4_cmd(dev, reg_id, 0, 0,
1605 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1606 MLX4_CMD_NATIVE);
1607 if (err)
1608 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1609 reg_id);
1610 return err;
1611 }
1612
mlx4_ib_tunnel_steer_add(struct ib_qp * qp,struct ib_flow_attr * flow_attr,u64 * reg_id)1613 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1614 u64 *reg_id)
1615 {
1616 void *ib_flow;
1617 union ib_flow_spec *ib_spec;
1618 struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1619 int err = 0;
1620
1621 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1622 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1623 return 0; /* do nothing */
1624
1625 ib_flow = flow_attr + 1;
1626 ib_spec = (union ib_flow_spec *)ib_flow;
1627
1628 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1629 return 0; /* do nothing */
1630
1631 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1632 flow_attr->port, qp->qp_num,
1633 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1634 reg_id);
1635 return err;
1636 }
1637
mlx4_ib_add_dont_trap_rule(struct mlx4_dev * dev,struct ib_flow_attr * flow_attr,enum mlx4_net_trans_promisc_mode * type)1638 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1639 struct ib_flow_attr *flow_attr,
1640 enum mlx4_net_trans_promisc_mode *type)
1641 {
1642 int err = 0;
1643
1644 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1645 (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1646 (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1647 return -EOPNOTSUPP;
1648 }
1649
1650 if (flow_attr->num_of_specs == 0) {
1651 type[0] = MLX4_FS_MC_SNIFFER;
1652 type[1] = MLX4_FS_UC_SNIFFER;
1653 } else {
1654 union ib_flow_spec *ib_spec;
1655
1656 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1657 if (ib_spec->type != IB_FLOW_SPEC_ETH)
1658 return -EINVAL;
1659
1660 /* if all is zero than MC and UC */
1661 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1662 type[0] = MLX4_FS_MC_SNIFFER;
1663 type[1] = MLX4_FS_UC_SNIFFER;
1664 } else {
1665 u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1666 ib_spec->eth.mask.dst_mac[1],
1667 ib_spec->eth.mask.dst_mac[2],
1668 ib_spec->eth.mask.dst_mac[3],
1669 ib_spec->eth.mask.dst_mac[4],
1670 ib_spec->eth.mask.dst_mac[5]};
1671
1672 /* Above xor was only on MC bit, non empty mask is valid
1673 * only if this bit is set and rest are zero.
1674 */
1675 if (!is_zero_ether_addr(&mac[0]))
1676 return -EINVAL;
1677
1678 if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1679 type[0] = MLX4_FS_MC_SNIFFER;
1680 else
1681 type[0] = MLX4_FS_UC_SNIFFER;
1682 }
1683 }
1684
1685 return err;
1686 }
1687
mlx4_ib_create_flow(struct ib_qp * qp,struct ib_flow_attr * flow_attr,struct ib_udata * udata)1688 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1689 struct ib_flow_attr *flow_attr,
1690 struct ib_udata *udata)
1691 {
1692 int err = 0, i = 0, j = 0;
1693 struct mlx4_ib_flow *mflow;
1694 enum mlx4_net_trans_promisc_mode type[2];
1695 struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1696 int is_bonded = mlx4_is_bonded(dev);
1697
1698 if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)
1699 return ERR_PTR(-EOPNOTSUPP);
1700
1701 if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1702 (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1703 return ERR_PTR(-EOPNOTSUPP);
1704
1705 if (udata &&
1706 udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen))
1707 return ERR_PTR(-EOPNOTSUPP);
1708
1709 memset(type, 0, sizeof(type));
1710
1711 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1712 if (!mflow) {
1713 err = -ENOMEM;
1714 goto err_free;
1715 }
1716
1717 switch (flow_attr->type) {
1718 case IB_FLOW_ATTR_NORMAL:
1719 /* If dont trap flag (continue match) is set, under specific
1720 * condition traffic be replicated to given qp,
1721 * without stealing it
1722 */
1723 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1724 err = mlx4_ib_add_dont_trap_rule(dev,
1725 flow_attr,
1726 type);
1727 if (err)
1728 goto err_free;
1729 } else {
1730 type[0] = MLX4_FS_REGULAR;
1731 }
1732 break;
1733
1734 case IB_FLOW_ATTR_ALL_DEFAULT:
1735 type[0] = MLX4_FS_ALL_DEFAULT;
1736 break;
1737
1738 case IB_FLOW_ATTR_MC_DEFAULT:
1739 type[0] = MLX4_FS_MC_DEFAULT;
1740 break;
1741
1742 case IB_FLOW_ATTR_SNIFFER:
1743 type[0] = MLX4_FS_MIRROR_RX_PORT;
1744 type[1] = MLX4_FS_MIRROR_SX_PORT;
1745 break;
1746
1747 default:
1748 err = -EINVAL;
1749 goto err_free;
1750 }
1751
1752 while (i < ARRAY_SIZE(type) && type[i]) {
1753 err = __mlx4_ib_create_flow(qp, flow_attr, MLX4_DOMAIN_UVERBS,
1754 type[i], &mflow->reg_id[i].id);
1755 if (err)
1756 goto err_create_flow;
1757 if (is_bonded) {
1758 /* Application always sees one port so the mirror rule
1759 * must be on port #2
1760 */
1761 flow_attr->port = 2;
1762 err = __mlx4_ib_create_flow(qp, flow_attr,
1763 MLX4_DOMAIN_UVERBS, type[j],
1764 &mflow->reg_id[j].mirror);
1765 flow_attr->port = 1;
1766 if (err)
1767 goto err_create_flow;
1768 j++;
1769 }
1770
1771 i++;
1772 }
1773
1774 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1775 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1776 &mflow->reg_id[i].id);
1777 if (err)
1778 goto err_create_flow;
1779
1780 if (is_bonded) {
1781 flow_attr->port = 2;
1782 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1783 &mflow->reg_id[j].mirror);
1784 flow_attr->port = 1;
1785 if (err)
1786 goto err_create_flow;
1787 j++;
1788 }
1789 /* function to create mirror rule */
1790 i++;
1791 }
1792
1793 return &mflow->ibflow;
1794
1795 err_create_flow:
1796 while (i) {
1797 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1798 mflow->reg_id[i].id);
1799 i--;
1800 }
1801
1802 while (j) {
1803 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1804 mflow->reg_id[j].mirror);
1805 j--;
1806 }
1807 err_free:
1808 kfree(mflow);
1809 return ERR_PTR(err);
1810 }
1811
mlx4_ib_destroy_flow(struct ib_flow * flow_id)1812 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1813 {
1814 int err, ret = 0;
1815 int i = 0;
1816 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1817 struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1818
1819 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1820 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1821 if (err)
1822 ret = err;
1823 if (mflow->reg_id[i].mirror) {
1824 err = __mlx4_ib_destroy_flow(mdev->dev,
1825 mflow->reg_id[i].mirror);
1826 if (err)
1827 ret = err;
1828 }
1829 i++;
1830 }
1831
1832 kfree(mflow);
1833 return ret;
1834 }
1835
mlx4_ib_mcg_attach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)1836 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1837 {
1838 int err;
1839 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1840 struct mlx4_dev *dev = mdev->dev;
1841 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1842 struct mlx4_ib_steering *ib_steering = NULL;
1843 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1844 struct mlx4_flow_reg_id reg_id;
1845
1846 if (mdev->dev->caps.steering_mode ==
1847 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1848 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1849 if (!ib_steering)
1850 return -ENOMEM;
1851 }
1852
1853 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1854 !!(mqp->flags &
1855 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1856 prot, ®_id.id);
1857 if (err) {
1858 pr_err("multicast attach op failed, err %d\n", err);
1859 goto err_malloc;
1860 }
1861
1862 reg_id.mirror = 0;
1863 if (mlx4_is_bonded(dev)) {
1864 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1865 (mqp->port == 1) ? 2 : 1,
1866 !!(mqp->flags &
1867 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1868 prot, ®_id.mirror);
1869 if (err)
1870 goto err_add;
1871 }
1872
1873 err = add_gid_entry(ibqp, gid);
1874 if (err)
1875 goto err_add;
1876
1877 if (ib_steering) {
1878 memcpy(ib_steering->gid.raw, gid->raw, 16);
1879 ib_steering->reg_id = reg_id;
1880 mutex_lock(&mqp->mutex);
1881 list_add(&ib_steering->list, &mqp->steering_rules);
1882 mutex_unlock(&mqp->mutex);
1883 }
1884 return 0;
1885
1886 err_add:
1887 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1888 prot, reg_id.id);
1889 if (reg_id.mirror)
1890 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1891 prot, reg_id.mirror);
1892 err_malloc:
1893 kfree(ib_steering);
1894
1895 return err;
1896 }
1897
find_gid_entry(struct mlx4_ib_qp * qp,u8 * raw)1898 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1899 {
1900 struct mlx4_ib_gid_entry *ge;
1901 struct mlx4_ib_gid_entry *tmp;
1902 struct mlx4_ib_gid_entry *ret = NULL;
1903
1904 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1905 if (!memcmp(raw, ge->gid.raw, 16)) {
1906 ret = ge;
1907 break;
1908 }
1909 }
1910
1911 return ret;
1912 }
1913
mlx4_ib_mcg_detach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)1914 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1915 {
1916 int err;
1917 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1918 struct mlx4_dev *dev = mdev->dev;
1919 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1920 struct net_device *ndev;
1921 struct mlx4_ib_gid_entry *ge;
1922 struct mlx4_flow_reg_id reg_id = {0, 0};
1923 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1924
1925 if (mdev->dev->caps.steering_mode ==
1926 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1927 struct mlx4_ib_steering *ib_steering;
1928
1929 mutex_lock(&mqp->mutex);
1930 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1931 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1932 list_del(&ib_steering->list);
1933 break;
1934 }
1935 }
1936 mutex_unlock(&mqp->mutex);
1937 if (&ib_steering->list == &mqp->steering_rules) {
1938 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1939 return -EINVAL;
1940 }
1941 reg_id = ib_steering->reg_id;
1942 kfree(ib_steering);
1943 }
1944
1945 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1946 prot, reg_id.id);
1947 if (err)
1948 return err;
1949
1950 if (mlx4_is_bonded(dev)) {
1951 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1952 prot, reg_id.mirror);
1953 if (err)
1954 return err;
1955 }
1956
1957 mutex_lock(&mqp->mutex);
1958 ge = find_gid_entry(mqp, gid->raw);
1959 if (ge) {
1960 spin_lock_bh(&mdev->iboe.lock);
1961 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1962 dev_hold(ndev);
1963 spin_unlock_bh(&mdev->iboe.lock);
1964 dev_put(ndev);
1965 list_del(&ge->list);
1966 kfree(ge);
1967 } else
1968 pr_warn("could not find mgid entry\n");
1969
1970 mutex_unlock(&mqp->mutex);
1971
1972 return 0;
1973 }
1974
init_node_data(struct mlx4_ib_dev * dev)1975 static int init_node_data(struct mlx4_ib_dev *dev)
1976 {
1977 struct ib_smp *in_mad;
1978 struct ib_smp *out_mad;
1979 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1980 int err = -ENOMEM;
1981
1982 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1983 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1984 if (!in_mad || !out_mad)
1985 goto out;
1986
1987 ib_init_query_mad(in_mad);
1988 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1989 if (mlx4_is_master(dev->dev))
1990 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1991
1992 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1993 if (err)
1994 goto out;
1995
1996 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1997
1998 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1999
2000 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2001 if (err)
2002 goto out;
2003
2004 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2005 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2006
2007 out:
2008 kfree(in_mad);
2009 kfree(out_mad);
2010 return err;
2011 }
2012
hca_type_show(struct device * device,struct device_attribute * attr,char * buf)2013 static ssize_t hca_type_show(struct device *device,
2014 struct device_attribute *attr, char *buf)
2015 {
2016 struct mlx4_ib_dev *dev =
2017 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2018
2019 return sysfs_emit(buf, "MT%d\n", dev->dev->persist->pdev->device);
2020 }
2021 static DEVICE_ATTR_RO(hca_type);
2022
hw_rev_show(struct device * device,struct device_attribute * attr,char * buf)2023 static ssize_t hw_rev_show(struct device *device,
2024 struct device_attribute *attr, char *buf)
2025 {
2026 struct mlx4_ib_dev *dev =
2027 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2028
2029 return sysfs_emit(buf, "%x\n", dev->dev->rev_id);
2030 }
2031 static DEVICE_ATTR_RO(hw_rev);
2032
board_id_show(struct device * device,struct device_attribute * attr,char * buf)2033 static ssize_t board_id_show(struct device *device,
2034 struct device_attribute *attr, char *buf)
2035 {
2036 struct mlx4_ib_dev *dev =
2037 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2038
2039 return sysfs_emit(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id);
2040 }
2041 static DEVICE_ATTR_RO(board_id);
2042
2043 static struct attribute *mlx4_class_attributes[] = {
2044 &dev_attr_hw_rev.attr,
2045 &dev_attr_hca_type.attr,
2046 &dev_attr_board_id.attr,
2047 NULL
2048 };
2049
2050 static const struct attribute_group mlx4_attr_group = {
2051 .attrs = mlx4_class_attributes,
2052 };
2053
2054 struct diag_counter {
2055 const char *name;
2056 u32 offset;
2057 };
2058
2059 #define DIAG_COUNTER(_name, _offset) \
2060 { .name = #_name, .offset = _offset }
2061
2062 static const struct diag_counter diag_basic[] = {
2063 DIAG_COUNTER(rq_num_lle, 0x00),
2064 DIAG_COUNTER(sq_num_lle, 0x04),
2065 DIAG_COUNTER(rq_num_lqpoe, 0x08),
2066 DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2067 DIAG_COUNTER(rq_num_lpe, 0x18),
2068 DIAG_COUNTER(sq_num_lpe, 0x1C),
2069 DIAG_COUNTER(rq_num_wrfe, 0x20),
2070 DIAG_COUNTER(sq_num_wrfe, 0x24),
2071 DIAG_COUNTER(sq_num_mwbe, 0x2C),
2072 DIAG_COUNTER(sq_num_bre, 0x34),
2073 DIAG_COUNTER(sq_num_rire, 0x44),
2074 DIAG_COUNTER(rq_num_rire, 0x48),
2075 DIAG_COUNTER(sq_num_rae, 0x4C),
2076 DIAG_COUNTER(rq_num_rae, 0x50),
2077 DIAG_COUNTER(sq_num_roe, 0x54),
2078 DIAG_COUNTER(sq_num_tree, 0x5C),
2079 DIAG_COUNTER(sq_num_rree, 0x64),
2080 DIAG_COUNTER(rq_num_rnr, 0x68),
2081 DIAG_COUNTER(sq_num_rnr, 0x6C),
2082 DIAG_COUNTER(rq_num_oos, 0x100),
2083 DIAG_COUNTER(sq_num_oos, 0x104),
2084 };
2085
2086 static const struct diag_counter diag_ext[] = {
2087 DIAG_COUNTER(rq_num_dup, 0x130),
2088 DIAG_COUNTER(sq_num_to, 0x134),
2089 };
2090
2091 static const struct diag_counter diag_device_only[] = {
2092 DIAG_COUNTER(num_cqovf, 0x1A0),
2093 DIAG_COUNTER(rq_num_udsdprd, 0x118),
2094 };
2095
2096 static struct rdma_hw_stats *
mlx4_ib_alloc_hw_device_stats(struct ib_device * ibdev)2097 mlx4_ib_alloc_hw_device_stats(struct ib_device *ibdev)
2098 {
2099 struct mlx4_ib_dev *dev = to_mdev(ibdev);
2100 struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2101
2102 if (!diag[0].descs)
2103 return NULL;
2104
2105 return rdma_alloc_hw_stats_struct(diag[0].descs, diag[0].num_counters,
2106 RDMA_HW_STATS_DEFAULT_LIFESPAN);
2107 }
2108
2109 static struct rdma_hw_stats *
mlx4_ib_alloc_hw_port_stats(struct ib_device * ibdev,u32 port_num)2110 mlx4_ib_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num)
2111 {
2112 struct mlx4_ib_dev *dev = to_mdev(ibdev);
2113 struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2114
2115 if (!diag[1].descs)
2116 return NULL;
2117
2118 return rdma_alloc_hw_stats_struct(diag[1].descs, diag[1].num_counters,
2119 RDMA_HW_STATS_DEFAULT_LIFESPAN);
2120 }
2121
mlx4_ib_get_hw_stats(struct ib_device * ibdev,struct rdma_hw_stats * stats,u32 port,int index)2122 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2123 struct rdma_hw_stats *stats,
2124 u32 port, int index)
2125 {
2126 struct mlx4_ib_dev *dev = to_mdev(ibdev);
2127 struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2128 u32 hw_value[ARRAY_SIZE(diag_device_only) +
2129 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2130 int ret;
2131 int i;
2132
2133 ret = mlx4_query_diag_counters(dev->dev,
2134 MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2135 diag[!!port].offset, hw_value,
2136 diag[!!port].num_counters, port);
2137
2138 if (ret)
2139 return ret;
2140
2141 for (i = 0; i < diag[!!port].num_counters; i++)
2142 stats->value[i] = hw_value[i];
2143
2144 return diag[!!port].num_counters;
2145 }
2146
__mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev * ibdev,struct rdma_stat_desc ** pdescs,u32 ** offset,u32 * num,bool port)2147 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2148 struct rdma_stat_desc **pdescs,
2149 u32 **offset, u32 *num, bool port)
2150 {
2151 u32 num_counters;
2152
2153 num_counters = ARRAY_SIZE(diag_basic);
2154
2155 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2156 num_counters += ARRAY_SIZE(diag_ext);
2157
2158 if (!port)
2159 num_counters += ARRAY_SIZE(diag_device_only);
2160
2161 *pdescs = kcalloc(num_counters, sizeof(struct rdma_stat_desc),
2162 GFP_KERNEL);
2163 if (!*pdescs)
2164 return -ENOMEM;
2165
2166 *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2167 if (!*offset)
2168 goto err;
2169
2170 *num = num_counters;
2171
2172 return 0;
2173
2174 err:
2175 kfree(*pdescs);
2176 return -ENOMEM;
2177 }
2178
mlx4_ib_fill_diag_counters(struct mlx4_ib_dev * ibdev,struct rdma_stat_desc * descs,u32 * offset,bool port)2179 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2180 struct rdma_stat_desc *descs,
2181 u32 *offset, bool port)
2182 {
2183 int i;
2184 int j;
2185
2186 for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2187 descs[i].name = diag_basic[i].name;
2188 offset[i] = diag_basic[i].offset;
2189 }
2190
2191 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2192 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2193 descs[j].name = diag_ext[i].name;
2194 offset[j] = diag_ext[i].offset;
2195 }
2196 }
2197
2198 if (!port) {
2199 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2200 descs[j].name = diag_device_only[i].name;
2201 offset[j] = diag_device_only[i].offset;
2202 }
2203 }
2204 }
2205
2206 static const struct ib_device_ops mlx4_ib_hw_stats_ops = {
2207 .alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats,
2208 .alloc_hw_port_stats = mlx4_ib_alloc_hw_port_stats,
2209 .get_hw_stats = mlx4_ib_get_hw_stats,
2210 };
2211
2212 static const struct ib_device_ops mlx4_ib_hw_stats_ops1 = {
2213 .alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats,
2214 .get_hw_stats = mlx4_ib_get_hw_stats,
2215 };
2216
mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev * ibdev)2217 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2218 {
2219 struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2220 int i;
2221 int ret;
2222 bool per_port = !!(ibdev->dev->caps.flags2 &
2223 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2224
2225 if (mlx4_is_slave(ibdev->dev))
2226 return 0;
2227
2228 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2229 /*
2230 * i == 1 means we are building port counters, set a different
2231 * stats ops without port stats callback.
2232 */
2233 if (i && !per_port) {
2234 ib_set_device_ops(&ibdev->ib_dev,
2235 &mlx4_ib_hw_stats_ops1);
2236
2237 return 0;
2238 }
2239
2240 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].descs,
2241 &diag[i].offset,
2242 &diag[i].num_counters, i);
2243 if (ret)
2244 goto err_alloc;
2245
2246 mlx4_ib_fill_diag_counters(ibdev, diag[i].descs,
2247 diag[i].offset, i);
2248 }
2249
2250 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops);
2251
2252 return 0;
2253
2254 err_alloc:
2255 if (i) {
2256 kfree(diag[i - 1].descs);
2257 kfree(diag[i - 1].offset);
2258 }
2259
2260 return ret;
2261 }
2262
mlx4_ib_diag_cleanup(struct mlx4_ib_dev * ibdev)2263 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2264 {
2265 int i;
2266
2267 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2268 kfree(ibdev->diag_counters[i].offset);
2269 kfree(ibdev->diag_counters[i].descs);
2270 }
2271 }
2272
2273 #define MLX4_IB_INVALID_MAC ((u64)-1)
mlx4_ib_update_qps(struct mlx4_ib_dev * ibdev,struct net_device * dev,int port)2274 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2275 struct net_device *dev,
2276 int port)
2277 {
2278 u64 new_smac = 0;
2279 u64 release_mac = MLX4_IB_INVALID_MAC;
2280 struct mlx4_ib_qp *qp;
2281
2282 new_smac = ether_addr_to_u64(dev->dev_addr);
2283 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2284
2285 /* no need for update QP1 and mac registration in non-SRIOV */
2286 if (!mlx4_is_mfunc(ibdev->dev))
2287 return;
2288
2289 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2290 qp = ibdev->qp1_proxy[port - 1];
2291 if (qp) {
2292 int new_smac_index;
2293 u64 old_smac;
2294 struct mlx4_update_qp_params update_params;
2295
2296 mutex_lock(&qp->mutex);
2297 old_smac = qp->pri.smac;
2298 if (new_smac == old_smac)
2299 goto unlock;
2300
2301 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2302
2303 if (new_smac_index < 0)
2304 goto unlock;
2305
2306 update_params.smac_index = new_smac_index;
2307 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2308 &update_params)) {
2309 release_mac = new_smac;
2310 goto unlock;
2311 }
2312 /* if old port was zero, no mac was yet registered for this QP */
2313 if (qp->pri.smac_port)
2314 release_mac = old_smac;
2315 qp->pri.smac = new_smac;
2316 qp->pri.smac_port = port;
2317 qp->pri.smac_index = new_smac_index;
2318 }
2319
2320 unlock:
2321 if (release_mac != MLX4_IB_INVALID_MAC)
2322 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2323 if (qp)
2324 mutex_unlock(&qp->mutex);
2325 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2326 }
2327
mlx4_ib_scan_netdev(struct mlx4_ib_dev * ibdev,struct net_device * dev,unsigned long event)2328 static void mlx4_ib_scan_netdev(struct mlx4_ib_dev *ibdev,
2329 struct net_device *dev,
2330 unsigned long event)
2331
2332 {
2333 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
2334
2335 ASSERT_RTNL();
2336
2337 if (dev->dev.parent != ibdev->ib_dev.dev.parent)
2338 return;
2339
2340 spin_lock_bh(&iboe->lock);
2341
2342 iboe->netdevs[dev->dev_port] = event != NETDEV_UNREGISTER ? dev : NULL;
2343
2344 if (event == NETDEV_UP || event == NETDEV_DOWN) {
2345 enum ib_port_state port_state;
2346 struct ib_event ibev = { };
2347
2348 if (ib_get_cached_port_state(&ibdev->ib_dev, dev->dev_port + 1,
2349 &port_state))
2350 goto iboe_out;
2351
2352 if (event == NETDEV_UP &&
2353 (port_state != IB_PORT_ACTIVE ||
2354 iboe->last_port_state[dev->dev_port] != IB_PORT_DOWN))
2355 goto iboe_out;
2356 if (event == NETDEV_DOWN &&
2357 (port_state != IB_PORT_DOWN ||
2358 iboe->last_port_state[dev->dev_port] != IB_PORT_ACTIVE))
2359 goto iboe_out;
2360 iboe->last_port_state[dev->dev_port] = port_state;
2361
2362 ibev.device = &ibdev->ib_dev;
2363 ibev.element.port_num = dev->dev_port + 1;
2364 ibev.event = event == NETDEV_UP ? IB_EVENT_PORT_ACTIVE :
2365 IB_EVENT_PORT_ERR;
2366 ib_dispatch_event(&ibev);
2367 }
2368
2369 iboe_out:
2370 spin_unlock_bh(&iboe->lock);
2371
2372 if (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2373 event == NETDEV_UP || event == NETDEV_CHANGE)
2374 mlx4_ib_update_qps(ibdev, dev, dev->dev_port + 1);
2375 }
2376
mlx4_ib_netdev_event(struct notifier_block * this,unsigned long event,void * ptr)2377 static int mlx4_ib_netdev_event(struct notifier_block *this,
2378 unsigned long event, void *ptr)
2379 {
2380 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2381 struct mlx4_ib_dev *ibdev;
2382
2383 if (!net_eq(dev_net(dev), &init_net))
2384 return NOTIFY_DONE;
2385
2386 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2387 mlx4_ib_scan_netdev(ibdev, dev, event);
2388
2389 return NOTIFY_DONE;
2390 }
2391
init_pkeys(struct mlx4_ib_dev * ibdev)2392 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2393 {
2394 int port;
2395 int slave;
2396 int i;
2397
2398 if (mlx4_is_master(ibdev->dev)) {
2399 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2400 ++slave) {
2401 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2402 for (i = 0;
2403 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2404 ++i) {
2405 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2406 /* master has the identity virt2phys pkey mapping */
2407 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2408 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2409 mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2410 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2411 }
2412 }
2413 }
2414 /* initialize pkey cache */
2415 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2416 for (i = 0;
2417 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2418 ++i)
2419 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2420 (i) ? 0 : 0xFFFF;
2421 }
2422 }
2423 }
2424
mlx4_ib_alloc_eqs(struct mlx4_dev * dev,struct mlx4_ib_dev * ibdev)2425 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2426 {
2427 int i, j, eq = 0, total_eqs = 0;
2428
2429 ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2430 sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2431 if (!ibdev->eq_table)
2432 return;
2433
2434 for (i = 1; i <= dev->caps.num_ports; i++) {
2435 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2436 j++, total_eqs++) {
2437 if (i > 1 && mlx4_is_eq_shared(dev, total_eqs))
2438 continue;
2439 ibdev->eq_table[eq] = total_eqs;
2440 if (!mlx4_assign_eq(dev, i,
2441 &ibdev->eq_table[eq]))
2442 eq++;
2443 else
2444 ibdev->eq_table[eq] = -1;
2445 }
2446 }
2447
2448 for (i = eq; i < dev->caps.num_comp_vectors;
2449 ibdev->eq_table[i++] = -1)
2450 ;
2451
2452 /* Advertise the new number of EQs to clients */
2453 ibdev->ib_dev.num_comp_vectors = eq;
2454 }
2455
mlx4_ib_free_eqs(struct mlx4_dev * dev,struct mlx4_ib_dev * ibdev)2456 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2457 {
2458 int i;
2459 int total_eqs = ibdev->ib_dev.num_comp_vectors;
2460
2461 /* no eqs were allocated */
2462 if (!ibdev->eq_table)
2463 return;
2464
2465 /* Reset the advertised EQ number */
2466 ibdev->ib_dev.num_comp_vectors = 0;
2467
2468 for (i = 0; i < total_eqs; i++)
2469 mlx4_release_eq(dev, ibdev->eq_table[i]);
2470
2471 kfree(ibdev->eq_table);
2472 ibdev->eq_table = NULL;
2473 }
2474
mlx4_port_immutable(struct ib_device * ibdev,u32 port_num,struct ib_port_immutable * immutable)2475 static int mlx4_port_immutable(struct ib_device *ibdev, u32 port_num,
2476 struct ib_port_immutable *immutable)
2477 {
2478 struct ib_port_attr attr;
2479 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2480 int err;
2481
2482 if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2483 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2484 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2485 } else {
2486 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2487 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2488 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2489 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2490 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2491 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2492 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2493 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2494 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2495 }
2496
2497 err = ib_query_port(ibdev, port_num, &attr);
2498 if (err)
2499 return err;
2500
2501 immutable->pkey_tbl_len = attr.pkey_tbl_len;
2502 immutable->gid_tbl_len = attr.gid_tbl_len;
2503
2504 return 0;
2505 }
2506
get_fw_ver_str(struct ib_device * device,char * str)2507 static void get_fw_ver_str(struct ib_device *device, char *str)
2508 {
2509 struct mlx4_ib_dev *dev =
2510 container_of(device, struct mlx4_ib_dev, ib_dev);
2511 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
2512 (int) (dev->dev->caps.fw_ver >> 32),
2513 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2514 (int) dev->dev->caps.fw_ver & 0xffff);
2515 }
2516
2517 static const struct ib_device_ops mlx4_ib_dev_ops = {
2518 .owner = THIS_MODULE,
2519 .driver_id = RDMA_DRIVER_MLX4,
2520 .uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION,
2521
2522 .add_gid = mlx4_ib_add_gid,
2523 .alloc_mr = mlx4_ib_alloc_mr,
2524 .alloc_pd = mlx4_ib_alloc_pd,
2525 .alloc_ucontext = mlx4_ib_alloc_ucontext,
2526 .attach_mcast = mlx4_ib_mcg_attach,
2527 .create_ah = mlx4_ib_create_ah,
2528 .create_cq = mlx4_ib_create_cq,
2529 .create_qp = mlx4_ib_create_qp,
2530 .create_srq = mlx4_ib_create_srq,
2531 .dealloc_pd = mlx4_ib_dealloc_pd,
2532 .dealloc_ucontext = mlx4_ib_dealloc_ucontext,
2533 .del_gid = mlx4_ib_del_gid,
2534 .dereg_mr = mlx4_ib_dereg_mr,
2535 .destroy_ah = mlx4_ib_destroy_ah,
2536 .destroy_cq = mlx4_ib_destroy_cq,
2537 .destroy_qp = mlx4_ib_destroy_qp,
2538 .destroy_srq = mlx4_ib_destroy_srq,
2539 .detach_mcast = mlx4_ib_mcg_detach,
2540 .device_group = &mlx4_attr_group,
2541 .disassociate_ucontext = mlx4_ib_disassociate_ucontext,
2542 .drain_rq = mlx4_ib_drain_rq,
2543 .drain_sq = mlx4_ib_drain_sq,
2544 .get_dev_fw_str = get_fw_ver_str,
2545 .get_dma_mr = mlx4_ib_get_dma_mr,
2546 .get_link_layer = mlx4_ib_port_link_layer,
2547 .get_netdev = mlx4_ib_get_netdev,
2548 .get_port_immutable = mlx4_port_immutable,
2549 .map_mr_sg = mlx4_ib_map_mr_sg,
2550 .mmap = mlx4_ib_mmap,
2551 .modify_cq = mlx4_ib_modify_cq,
2552 .modify_device = mlx4_ib_modify_device,
2553 .modify_port = mlx4_ib_modify_port,
2554 .modify_qp = mlx4_ib_modify_qp,
2555 .modify_srq = mlx4_ib_modify_srq,
2556 .poll_cq = mlx4_ib_poll_cq,
2557 .post_recv = mlx4_ib_post_recv,
2558 .post_send = mlx4_ib_post_send,
2559 .post_srq_recv = mlx4_ib_post_srq_recv,
2560 .process_mad = mlx4_ib_process_mad,
2561 .query_ah = mlx4_ib_query_ah,
2562 .query_device = mlx4_ib_query_device,
2563 .query_gid = mlx4_ib_query_gid,
2564 .query_pkey = mlx4_ib_query_pkey,
2565 .query_port = mlx4_ib_query_port,
2566 .query_qp = mlx4_ib_query_qp,
2567 .query_srq = mlx4_ib_query_srq,
2568 .reg_user_mr = mlx4_ib_reg_user_mr,
2569 .req_notify_cq = mlx4_ib_arm_cq,
2570 .rereg_user_mr = mlx4_ib_rereg_user_mr,
2571 .resize_cq = mlx4_ib_resize_cq,
2572
2573 INIT_RDMA_OBJ_SIZE(ib_ah, mlx4_ib_ah, ibah),
2574 INIT_RDMA_OBJ_SIZE(ib_cq, mlx4_ib_cq, ibcq),
2575 INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd),
2576 INIT_RDMA_OBJ_SIZE(ib_qp, mlx4_ib_qp, ibqp),
2577 INIT_RDMA_OBJ_SIZE(ib_srq, mlx4_ib_srq, ibsrq),
2578 INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext),
2579 };
2580
2581 static const struct ib_device_ops mlx4_ib_dev_wq_ops = {
2582 .create_rwq_ind_table = mlx4_ib_create_rwq_ind_table,
2583 .create_wq = mlx4_ib_create_wq,
2584 .destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table,
2585 .destroy_wq = mlx4_ib_destroy_wq,
2586 .modify_wq = mlx4_ib_modify_wq,
2587
2588 INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx4_ib_rwq_ind_table,
2589 ib_rwq_ind_tbl),
2590 };
2591
2592 static const struct ib_device_ops mlx4_ib_dev_mw_ops = {
2593 .alloc_mw = mlx4_ib_alloc_mw,
2594 .dealloc_mw = mlx4_ib_dealloc_mw,
2595
2596 INIT_RDMA_OBJ_SIZE(ib_mw, mlx4_ib_mw, ibmw),
2597 };
2598
2599 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = {
2600 .alloc_xrcd = mlx4_ib_alloc_xrcd,
2601 .dealloc_xrcd = mlx4_ib_dealloc_xrcd,
2602
2603 INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx4_ib_xrcd, ibxrcd),
2604 };
2605
2606 static const struct ib_device_ops mlx4_ib_dev_fs_ops = {
2607 .create_flow = mlx4_ib_create_flow,
2608 .destroy_flow = mlx4_ib_destroy_flow,
2609 };
2610
mlx4_ib_probe(struct auxiliary_device * adev,const struct auxiliary_device_id * id)2611 static int mlx4_ib_probe(struct auxiliary_device *adev,
2612 const struct auxiliary_device_id *id)
2613 {
2614 struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
2615 struct mlx4_dev *dev = madev->mdev;
2616 struct mlx4_ib_dev *ibdev;
2617 int num_ports = 0;
2618 int i, j;
2619 int err;
2620 struct mlx4_ib_iboe *iboe;
2621 int ib_num_ports = 0;
2622 int num_req_counters;
2623 int allocated;
2624 u32 counter_index;
2625 struct counter_index *new_counter_index;
2626
2627 pr_info_once("%s", mlx4_ib_version);
2628
2629 num_ports = 0;
2630 mlx4_foreach_ib_transport_port(i, dev)
2631 num_ports++;
2632
2633 /* No point in registering a device with no ports... */
2634 if (num_ports == 0)
2635 return -ENODEV;
2636
2637 ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev);
2638 if (!ibdev) {
2639 dev_err(&dev->persist->pdev->dev,
2640 "Device struct alloc failed\n");
2641 return -ENOMEM;
2642 }
2643
2644 iboe = &ibdev->iboe;
2645
2646 err = mlx4_pd_alloc(dev, &ibdev->priv_pdn);
2647 if (err)
2648 goto err_dealloc;
2649
2650 err = mlx4_uar_alloc(dev, &ibdev->priv_uar);
2651 if (err)
2652 goto err_pd;
2653
2654 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2655 PAGE_SIZE);
2656 if (!ibdev->uar_map) {
2657 err = -ENOMEM;
2658 goto err_uar;
2659 }
2660 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2661
2662 ibdev->dev = dev;
2663 ibdev->bond_next_port = 0;
2664
2665 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
2666 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
2667 ibdev->num_ports = num_ports;
2668 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ?
2669 1 : ibdev->num_ports;
2670 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
2671 ibdev->ib_dev.dev.parent = &dev->persist->pdev->dev;
2672
2673 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops);
2674
2675 if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
2676 ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) ==
2677 IB_LINK_LAYER_ETHERNET) ||
2678 (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) ==
2679 IB_LINK_LAYER_ETHERNET)))
2680 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops);
2681
2682 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2683 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2684 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops);
2685
2686 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2687 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops);
2688 }
2689
2690 if (check_flow_steering_support(dev)) {
2691 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2692 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops);
2693 }
2694
2695 if (!dev->caps.userspace_caps)
2696 ibdev->ib_dev.ops.uverbs_abi_ver =
2697 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2698
2699 mlx4_ib_alloc_eqs(dev, ibdev);
2700
2701 spin_lock_init(&iboe->lock);
2702
2703 err = init_node_data(ibdev);
2704 if (err)
2705 goto err_map;
2706 mlx4_init_sl2vl_tbl(ibdev);
2707
2708 for (i = 0; i < ibdev->num_ports; ++i) {
2709 mutex_init(&ibdev->counters_table[i].mutex);
2710 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2711 iboe->last_port_state[i] = IB_PORT_DOWN;
2712 }
2713
2714 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2715 for (i = 0; i < num_req_counters; ++i) {
2716 mutex_init(&ibdev->qp1_proxy_lock[i]);
2717 allocated = 0;
2718 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2719 IB_LINK_LAYER_ETHERNET) {
2720 err = mlx4_counter_alloc(ibdev->dev, &counter_index,
2721 MLX4_RES_USAGE_DRIVER);
2722 /* if failed to allocate a new counter, use default */
2723 if (err)
2724 counter_index =
2725 mlx4_get_default_counter_index(dev,
2726 i + 1);
2727 else
2728 allocated = 1;
2729 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2730 counter_index = mlx4_get_default_counter_index(dev,
2731 i + 1);
2732 }
2733 new_counter_index = kmalloc(sizeof(*new_counter_index),
2734 GFP_KERNEL);
2735 if (!new_counter_index) {
2736 err = -ENOMEM;
2737 if (allocated)
2738 mlx4_counter_free(ibdev->dev, counter_index);
2739 goto err_counter;
2740 }
2741 new_counter_index->index = counter_index;
2742 new_counter_index->allocated = allocated;
2743 list_add_tail(&new_counter_index->list,
2744 &ibdev->counters_table[i].counters_list);
2745 ibdev->counters_table[i].default_counter = counter_index;
2746 pr_info("counter index %d for port %d allocated %d\n",
2747 counter_index, i + 1, allocated);
2748 }
2749 if (mlx4_is_bonded(dev))
2750 for (i = 1; i < ibdev->num_ports ; ++i) {
2751 new_counter_index =
2752 kmalloc(sizeof(struct counter_index),
2753 GFP_KERNEL);
2754 if (!new_counter_index) {
2755 err = -ENOMEM;
2756 goto err_counter;
2757 }
2758 new_counter_index->index = counter_index;
2759 new_counter_index->allocated = 0;
2760 list_add_tail(&new_counter_index->list,
2761 &ibdev->counters_table[i].counters_list);
2762 ibdev->counters_table[i].default_counter =
2763 counter_index;
2764 }
2765
2766 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2767 ib_num_ports++;
2768
2769 spin_lock_init(&ibdev->sm_lock);
2770 mutex_init(&ibdev->cap_mask_mutex);
2771 INIT_LIST_HEAD(&ibdev->qp_list);
2772 spin_lock_init(&ibdev->reset_flow_resource_lock);
2773
2774 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2775 ib_num_ports) {
2776 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2777 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2778 MLX4_IB_UC_STEER_QPN_ALIGN,
2779 &ibdev->steer_qpn_base, 0,
2780 MLX4_RES_USAGE_DRIVER);
2781 if (err)
2782 goto err_counter;
2783
2784 ibdev->ib_uc_qpns_bitmap = bitmap_alloc(ibdev->steer_qpn_count,
2785 GFP_KERNEL);
2786 if (!ibdev->ib_uc_qpns_bitmap) {
2787 err = -ENOMEM;
2788 goto err_steer_qp_release;
2789 }
2790
2791 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2792 bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2793 ibdev->steer_qpn_count);
2794 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2795 dev, ibdev->steer_qpn_base,
2796 ibdev->steer_qpn_base +
2797 ibdev->steer_qpn_count - 1);
2798 if (err)
2799 goto err_steer_free_bitmap;
2800 } else {
2801 bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2802 ibdev->steer_qpn_count);
2803 }
2804 }
2805
2806 for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2807 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2808
2809 err = mlx4_ib_alloc_diag_counters(ibdev);
2810 if (err)
2811 goto err_steer_free_bitmap;
2812
2813 err = ib_register_device(&ibdev->ib_dev, "mlx4_%d",
2814 &dev->persist->pdev->dev);
2815 if (err)
2816 goto err_diag_counters;
2817
2818 err = mlx4_ib_mad_init(ibdev);
2819 if (err)
2820 goto err_reg;
2821
2822 err = mlx4_ib_init_sriov(ibdev);
2823 if (err)
2824 goto err_mad;
2825
2826 if (!iboe->nb.notifier_call) {
2827 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2828 err = register_netdevice_notifier(&iboe->nb);
2829 if (err) {
2830 iboe->nb.notifier_call = NULL;
2831 goto err_notif;
2832 }
2833 }
2834 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2835 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2836 if (err)
2837 goto err_notif;
2838 }
2839
2840 ibdev->ib_active = true;
2841 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2842 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2843 &ibdev->ib_dev);
2844
2845 if (mlx4_is_mfunc(ibdev->dev))
2846 init_pkeys(ibdev);
2847
2848 /* create paravirt contexts for any VFs which are active */
2849 if (mlx4_is_master(ibdev->dev)) {
2850 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2851 if (j == mlx4_master_func_num(ibdev->dev))
2852 continue;
2853 if (mlx4_is_slave_active(ibdev->dev, j))
2854 do_slave_init(ibdev, j, 1);
2855 }
2856 }
2857
2858 /* register mlx4 core notifier */
2859 ibdev->mlx_nb.notifier_call = mlx4_ib_event;
2860 err = mlx4_register_event_notifier(dev, &ibdev->mlx_nb);
2861 WARN(err, "failed to register mlx4 event notifier (%d)", err);
2862
2863 auxiliary_set_drvdata(adev, ibdev);
2864 return 0;
2865
2866 err_notif:
2867 if (ibdev->iboe.nb.notifier_call) {
2868 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2869 pr_warn("failure unregistering notifier\n");
2870 ibdev->iboe.nb.notifier_call = NULL;
2871 }
2872 flush_workqueue(wq);
2873
2874 mlx4_ib_close_sriov(ibdev);
2875
2876 err_mad:
2877 mlx4_ib_mad_cleanup(ibdev);
2878
2879 err_reg:
2880 ib_unregister_device(&ibdev->ib_dev);
2881
2882 err_diag_counters:
2883 mlx4_ib_diag_cleanup(ibdev);
2884
2885 err_steer_free_bitmap:
2886 bitmap_free(ibdev->ib_uc_qpns_bitmap);
2887
2888 err_steer_qp_release:
2889 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2890 ibdev->steer_qpn_count);
2891 err_counter:
2892 for (i = 0; i < ibdev->num_ports; ++i)
2893 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2894
2895 err_map:
2896 mlx4_ib_free_eqs(dev, ibdev);
2897 iounmap(ibdev->uar_map);
2898
2899 err_uar:
2900 mlx4_uar_free(dev, &ibdev->priv_uar);
2901
2902 err_pd:
2903 mlx4_pd_free(dev, ibdev->priv_pdn);
2904
2905 err_dealloc:
2906 ib_dealloc_device(&ibdev->ib_dev);
2907
2908 return err;
2909 }
2910
mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev * dev,int count,int * qpn)2911 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2912 {
2913 int offset;
2914
2915 WARN_ON(!dev->ib_uc_qpns_bitmap);
2916
2917 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2918 dev->steer_qpn_count,
2919 get_count_order(count));
2920 if (offset < 0)
2921 return offset;
2922
2923 *qpn = dev->steer_qpn_base + offset;
2924 return 0;
2925 }
2926
mlx4_ib_steer_qp_free(struct mlx4_ib_dev * dev,u32 qpn,int count)2927 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2928 {
2929 if (!qpn ||
2930 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2931 return;
2932
2933 if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n",
2934 qpn, dev->steer_qpn_base))
2935 /* not supposed to be here */
2936 return;
2937
2938 bitmap_release_region(dev->ib_uc_qpns_bitmap,
2939 qpn - dev->steer_qpn_base,
2940 get_count_order(count));
2941 }
2942
mlx4_ib_steer_qp_reg(struct mlx4_ib_dev * mdev,struct mlx4_ib_qp * mqp,int is_attach)2943 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2944 int is_attach)
2945 {
2946 int err;
2947 size_t flow_size;
2948 struct ib_flow_attr *flow;
2949 struct ib_flow_spec_ib *ib_spec;
2950
2951 if (is_attach) {
2952 flow_size = sizeof(struct ib_flow_attr) +
2953 sizeof(struct ib_flow_spec_ib);
2954 flow = kzalloc(flow_size, GFP_KERNEL);
2955 if (!flow)
2956 return -ENOMEM;
2957 flow->port = mqp->port;
2958 flow->num_of_specs = 1;
2959 flow->size = flow_size;
2960 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2961 ib_spec->type = IB_FLOW_SPEC_IB;
2962 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2963 /* Add an empty rule for IB L2 */
2964 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2965
2966 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, MLX4_DOMAIN_NIC,
2967 MLX4_FS_REGULAR, &mqp->reg_id);
2968 kfree(flow);
2969 return err;
2970 }
2971
2972 return __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2973 }
2974
mlx4_ib_remove(struct auxiliary_device * adev)2975 static void mlx4_ib_remove(struct auxiliary_device *adev)
2976 {
2977 struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
2978 struct mlx4_dev *dev = madev->mdev;
2979 struct mlx4_ib_dev *ibdev = auxiliary_get_drvdata(adev);
2980 int p;
2981 int i;
2982
2983 mlx4_unregister_event_notifier(dev, &ibdev->mlx_nb);
2984
2985 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2986 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
2987 ibdev->ib_active = false;
2988 flush_workqueue(wq);
2989
2990 if (ibdev->iboe.nb.notifier_call) {
2991 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2992 pr_warn("failure unregistering notifier\n");
2993 ibdev->iboe.nb.notifier_call = NULL;
2994 }
2995
2996 mlx4_ib_close_sriov(ibdev);
2997 mlx4_ib_mad_cleanup(ibdev);
2998 ib_unregister_device(&ibdev->ib_dev);
2999 mlx4_ib_diag_cleanup(ibdev);
3000
3001 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3002 ibdev->steer_qpn_count);
3003 bitmap_free(ibdev->ib_uc_qpns_bitmap);
3004
3005 iounmap(ibdev->uar_map);
3006 for (p = 0; p < ibdev->num_ports; ++p)
3007 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3008
3009 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3010 mlx4_CLOSE_PORT(dev, p);
3011
3012 mlx4_ib_free_eqs(dev, ibdev);
3013
3014 mlx4_uar_free(dev, &ibdev->priv_uar);
3015 mlx4_pd_free(dev, ibdev->priv_pdn);
3016 ib_dealloc_device(&ibdev->ib_dev);
3017 }
3018
do_slave_init(struct mlx4_ib_dev * ibdev,int slave,int do_init)3019 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3020 {
3021 struct mlx4_ib_demux_work **dm;
3022 struct mlx4_dev *dev = ibdev->dev;
3023 int i;
3024 unsigned long flags;
3025 struct mlx4_active_ports actv_ports;
3026 unsigned int ports;
3027 unsigned int first_port;
3028
3029 if (!mlx4_is_master(dev))
3030 return;
3031
3032 actv_ports = mlx4_get_active_ports(dev, slave);
3033 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3034 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3035
3036 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3037 if (!dm)
3038 return;
3039
3040 for (i = 0; i < ports; i++) {
3041 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3042 if (!dm[i]) {
3043 while (--i >= 0)
3044 kfree(dm[i]);
3045 goto out;
3046 }
3047 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3048 dm[i]->port = first_port + i + 1;
3049 dm[i]->slave = slave;
3050 dm[i]->do_init = do_init;
3051 dm[i]->dev = ibdev;
3052 }
3053 /* initialize or tear down tunnel QPs for the slave */
3054 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3055 if (!ibdev->sriov.is_going_down) {
3056 for (i = 0; i < ports; i++)
3057 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3058 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3059 } else {
3060 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3061 for (i = 0; i < ports; i++)
3062 kfree(dm[i]);
3063 }
3064 out:
3065 kfree(dm);
3066 return;
3067 }
3068
mlx4_ib_handle_catas_error(struct mlx4_ib_dev * ibdev)3069 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3070 {
3071 struct mlx4_ib_qp *mqp;
3072 unsigned long flags_qp;
3073 unsigned long flags_cq;
3074 struct mlx4_ib_cq *send_mcq, *recv_mcq;
3075 struct list_head cq_notify_list;
3076 struct mlx4_cq *mcq;
3077 unsigned long flags;
3078
3079 pr_warn("mlx4_ib_handle_catas_error was started\n");
3080 INIT_LIST_HEAD(&cq_notify_list);
3081
3082 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3083 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3084
3085 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3086 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3087 if (mqp->sq.tail != mqp->sq.head) {
3088 send_mcq = to_mcq(mqp->ibqp.send_cq);
3089 spin_lock_irqsave(&send_mcq->lock, flags_cq);
3090 if (send_mcq->mcq.comp &&
3091 mqp->ibqp.send_cq->comp_handler) {
3092 if (!send_mcq->mcq.reset_notify_added) {
3093 send_mcq->mcq.reset_notify_added = 1;
3094 list_add_tail(&send_mcq->mcq.reset_notify,
3095 &cq_notify_list);
3096 }
3097 }
3098 spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3099 }
3100 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3101 /* Now, handle the QP's receive queue */
3102 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3103 /* no handling is needed for SRQ */
3104 if (!mqp->ibqp.srq) {
3105 if (mqp->rq.tail != mqp->rq.head) {
3106 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3107 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3108 if (recv_mcq->mcq.comp &&
3109 mqp->ibqp.recv_cq->comp_handler) {
3110 if (!recv_mcq->mcq.reset_notify_added) {
3111 recv_mcq->mcq.reset_notify_added = 1;
3112 list_add_tail(&recv_mcq->mcq.reset_notify,
3113 &cq_notify_list);
3114 }
3115 }
3116 spin_unlock_irqrestore(&recv_mcq->lock,
3117 flags_cq);
3118 }
3119 }
3120 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3121 }
3122
3123 list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3124 mcq->comp(mcq);
3125 }
3126 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3127 pr_warn("mlx4_ib_handle_catas_error ended\n");
3128 }
3129
handle_bonded_port_state_event(struct work_struct * work)3130 static void handle_bonded_port_state_event(struct work_struct *work)
3131 {
3132 struct ib_event_work *ew =
3133 container_of(work, struct ib_event_work, work);
3134 struct mlx4_ib_dev *ibdev = ew->ib_dev;
3135 enum ib_port_state bonded_port_state = IB_PORT_NOP;
3136 int i;
3137 struct ib_event ibev;
3138
3139 kfree(ew);
3140 spin_lock_bh(&ibdev->iboe.lock);
3141 for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3142 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3143 enum ib_port_state curr_port_state;
3144
3145 if (!curr_netdev)
3146 continue;
3147
3148 curr_port_state =
3149 (netif_running(curr_netdev) &&
3150 netif_carrier_ok(curr_netdev)) ?
3151 IB_PORT_ACTIVE : IB_PORT_DOWN;
3152
3153 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3154 curr_port_state : IB_PORT_ACTIVE;
3155 }
3156 spin_unlock_bh(&ibdev->iboe.lock);
3157
3158 ibev.device = &ibdev->ib_dev;
3159 ibev.element.port_num = 1;
3160 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3161 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3162
3163 ib_dispatch_event(&ibev);
3164 }
3165
mlx4_ib_sl2vl_update(struct mlx4_ib_dev * mdev,int port)3166 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3167 {
3168 u64 sl2vl;
3169 int err;
3170
3171 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3172 if (err) {
3173 pr_err("Unable to get current sl to vl mapping for port %d. Using all zeroes (%d)\n",
3174 port, err);
3175 sl2vl = 0;
3176 }
3177 atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3178 }
3179
ib_sl2vl_update_work(struct work_struct * work)3180 static void ib_sl2vl_update_work(struct work_struct *work)
3181 {
3182 struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3183 struct mlx4_ib_dev *mdev = ew->ib_dev;
3184 int port = ew->port;
3185
3186 mlx4_ib_sl2vl_update(mdev, port);
3187
3188 kfree(ew);
3189 }
3190
mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev * ibdev,int port)3191 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3192 int port)
3193 {
3194 struct ib_event_work *ew;
3195
3196 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3197 if (ew) {
3198 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3199 ew->port = port;
3200 ew->ib_dev = ibdev;
3201 queue_work(wq, &ew->work);
3202 }
3203 }
3204
mlx4_ib_event(struct notifier_block * this,unsigned long event,void * param)3205 static int mlx4_ib_event(struct notifier_block *this, unsigned long event,
3206 void *param)
3207 {
3208 struct mlx4_ib_dev *ibdev =
3209 container_of(this, struct mlx4_ib_dev, mlx_nb);
3210 struct mlx4_dev *dev = ibdev->dev;
3211 struct ib_event ibev;
3212 struct mlx4_eqe *eqe = NULL;
3213 struct ib_event_work *ew;
3214 int p = 0;
3215
3216 if (mlx4_is_bonded(dev) &&
3217 ((event == MLX4_DEV_EVENT_PORT_UP) ||
3218 (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3219 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3220 if (!ew)
3221 return NOTIFY_DONE;
3222 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3223 ew->ib_dev = ibdev;
3224 queue_work(wq, &ew->work);
3225 return NOTIFY_DONE;
3226 }
3227
3228 switch (event) {
3229 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3230 break;
3231 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3232 eqe = (struct mlx4_eqe *)param;
3233 break;
3234 default:
3235 p = *(int *)param;
3236 break;
3237 }
3238
3239 switch (event) {
3240 case MLX4_DEV_EVENT_PORT_UP:
3241 if (p > ibdev->num_ports)
3242 return NOTIFY_DONE;
3243 if (!mlx4_is_slave(dev) &&
3244 rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3245 IB_LINK_LAYER_INFINIBAND) {
3246 if (mlx4_is_master(dev))
3247 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3248 if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3249 !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3250 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3251 }
3252 ibev.event = IB_EVENT_PORT_ACTIVE;
3253 break;
3254
3255 case MLX4_DEV_EVENT_PORT_DOWN:
3256 if (p > ibdev->num_ports)
3257 return NOTIFY_DONE;
3258 ibev.event = IB_EVENT_PORT_ERR;
3259 break;
3260
3261 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3262 ibdev->ib_active = false;
3263 ibev.event = IB_EVENT_DEVICE_FATAL;
3264 mlx4_ib_handle_catas_error(ibdev);
3265 break;
3266
3267 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3268 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3269 if (!ew)
3270 return NOTIFY_DONE;
3271
3272 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3273 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3274 ew->ib_dev = ibdev;
3275 /* need to queue only for port owner, which uses GEN_EQE */
3276 if (mlx4_is_master(dev))
3277 queue_work(wq, &ew->work);
3278 else
3279 handle_port_mgmt_change_event(&ew->work);
3280 return NOTIFY_DONE;
3281
3282 case MLX4_DEV_EVENT_SLAVE_INIT:
3283 /* here, p is the slave id */
3284 do_slave_init(ibdev, p, 1);
3285 if (mlx4_is_master(dev)) {
3286 int i;
3287
3288 for (i = 1; i <= ibdev->num_ports; i++) {
3289 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3290 == IB_LINK_LAYER_INFINIBAND)
3291 mlx4_ib_slave_alias_guid_event(ibdev,
3292 p, i,
3293 1);
3294 }
3295 }
3296 return NOTIFY_DONE;
3297
3298 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3299 if (mlx4_is_master(dev)) {
3300 int i;
3301
3302 for (i = 1; i <= ibdev->num_ports; i++) {
3303 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3304 == IB_LINK_LAYER_INFINIBAND)
3305 mlx4_ib_slave_alias_guid_event(ibdev,
3306 p, i,
3307 0);
3308 }
3309 }
3310 /* here, p is the slave id */
3311 do_slave_init(ibdev, p, 0);
3312 return NOTIFY_DONE;
3313
3314 default:
3315 return NOTIFY_DONE;
3316 }
3317
3318 ibev.device = &ibdev->ib_dev;
3319 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3320
3321 ib_dispatch_event(&ibev);
3322 return NOTIFY_DONE;
3323 }
3324
3325 static const struct auxiliary_device_id mlx4_ib_id_table[] = {
3326 { .name = MLX4_ADEV_NAME ".ib" },
3327 {},
3328 };
3329
3330 MODULE_DEVICE_TABLE(auxiliary, mlx4_ib_id_table);
3331
3332 static struct mlx4_adrv mlx4_ib_adrv = {
3333 .adrv = {
3334 .name = "ib",
3335 .probe = mlx4_ib_probe,
3336 .remove = mlx4_ib_remove,
3337 .id_table = mlx4_ib_id_table,
3338 },
3339 .protocol = MLX4_PROT_IB_IPV6,
3340 .flags = MLX4_INTFF_BONDING
3341 };
3342
mlx4_ib_init(void)3343 static int __init mlx4_ib_init(void)
3344 {
3345 int err;
3346
3347 wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3348 if (!wq)
3349 return -ENOMEM;
3350
3351 err = mlx4_ib_qp_event_init();
3352 if (err)
3353 goto clean_qp_event;
3354
3355 err = mlx4_ib_cm_init();
3356 if (err)
3357 goto clean_wq;
3358
3359 err = mlx4_ib_mcg_init();
3360 if (err)
3361 goto clean_cm;
3362
3363 err = mlx4_register_auxiliary_driver(&mlx4_ib_adrv);
3364 if (err)
3365 goto clean_mcg;
3366
3367 return 0;
3368
3369 clean_mcg:
3370 mlx4_ib_mcg_destroy();
3371
3372 clean_cm:
3373 mlx4_ib_cm_destroy();
3374
3375 clean_wq:
3376 mlx4_ib_qp_event_cleanup();
3377
3378 clean_qp_event:
3379 destroy_workqueue(wq);
3380 return err;
3381 }
3382
mlx4_ib_cleanup(void)3383 static void __exit mlx4_ib_cleanup(void)
3384 {
3385 mlx4_unregister_auxiliary_driver(&mlx4_ib_adrv);
3386 mlx4_ib_mcg_destroy();
3387 mlx4_ib_cm_destroy();
3388 mlx4_ib_qp_event_cleanup();
3389 destroy_workqueue(wq);
3390 }
3391
3392 module_init(mlx4_ib_init);
3393 module_exit(mlx4_ib_cleanup);
3394