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[mirror_ubuntu-jammy-kernel.git] / drivers / infiniband / hw / mlx5 / main.c
1 /*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #include <linux/debugfs.h>
34 #include <linux/highmem.h>
35 #include <linux/module.h>
36 #include <linux/init.h>
37 #include <linux/errno.h>
38 #include <linux/pci.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/slab.h>
41 #if defined(CONFIG_X86)
42 #include <asm/pat.h>
43 #endif
44 #include <linux/sched.h>
45 #include <linux/sched/mm.h>
46 #include <linux/sched/task.h>
47 #include <linux/delay.h>
48 #include <rdma/ib_user_verbs.h>
49 #include <rdma/ib_addr.h>
50 #include <rdma/ib_cache.h>
51 #include <linux/mlx5/port.h>
52 #include <linux/mlx5/vport.h>
53 #include <linux/list.h>
54 #include <rdma/ib_smi.h>
55 #include <rdma/ib_umem.h>
56 #include <linux/in.h>
57 #include <linux/etherdevice.h>
58 #include <linux/mlx5/fs.h>
59 #include <linux/mlx5/vport.h>
60 #include "mlx5_ib.h"
61 #include "cmd.h"
62 #include <linux/mlx5/vport.h>
63
64 #define DRIVER_NAME "mlx5_ib"
65 #define DRIVER_VERSION "5.0-0"
66
67 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
68 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
69 MODULE_LICENSE("Dual BSD/GPL");
70
71 static char mlx5_version[] =
72 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
73 DRIVER_VERSION "\n";
74
75 enum {
76 MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3,
77 };
78
79 static enum rdma_link_layer
80 mlx5_port_type_cap_to_rdma_ll(int port_type_cap)
81 {
82 switch (port_type_cap) {
83 case MLX5_CAP_PORT_TYPE_IB:
84 return IB_LINK_LAYER_INFINIBAND;
85 case MLX5_CAP_PORT_TYPE_ETH:
86 return IB_LINK_LAYER_ETHERNET;
87 default:
88 return IB_LINK_LAYER_UNSPECIFIED;
89 }
90 }
91
92 static enum rdma_link_layer
93 mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num)
94 {
95 struct mlx5_ib_dev *dev = to_mdev(device);
96 int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type);
97
98 return mlx5_port_type_cap_to_rdma_ll(port_type_cap);
99 }
100
101 static int get_port_state(struct ib_device *ibdev,
102 u8 port_num,
103 enum ib_port_state *state)
104 {
105 struct ib_port_attr attr;
106 int ret;
107
108 memset(&attr, 0, sizeof(attr));
109 ret = mlx5_ib_query_port(ibdev, port_num, &attr);
110 if (!ret)
111 *state = attr.state;
112 return ret;
113 }
114
115 static int mlx5_netdev_event(struct notifier_block *this,
116 unsigned long event, void *ptr)
117 {
118 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
119 struct mlx5_ib_dev *ibdev = container_of(this, struct mlx5_ib_dev,
120 roce.nb);
121
122 switch (event) {
123 case NETDEV_REGISTER:
124 case NETDEV_UNREGISTER:
125 write_lock(&ibdev->roce.netdev_lock);
126 if (ndev->dev.parent == &ibdev->mdev->pdev->dev)
127 ibdev->roce.netdev = (event == NETDEV_UNREGISTER) ?
128 NULL : ndev;
129 write_unlock(&ibdev->roce.netdev_lock);
130 break;
131
132 case NETDEV_CHANGE:
133 case NETDEV_UP:
134 case NETDEV_DOWN: {
135 struct net_device *lag_ndev = mlx5_lag_get_roce_netdev(ibdev->mdev);
136 struct net_device *upper = NULL;
137
138 if (lag_ndev) {
139 upper = netdev_master_upper_dev_get(lag_ndev);
140 dev_put(lag_ndev);
141 }
142
143 if ((upper == ndev || (!upper && ndev == ibdev->roce.netdev))
144 && ibdev->ib_active) {
145 struct ib_event ibev = { };
146 enum ib_port_state port_state;
147
148 if (get_port_state(&ibdev->ib_dev, 1, &port_state))
149 return NOTIFY_DONE;
150
151 if (ibdev->roce.last_port_state == port_state)
152 return NOTIFY_DONE;
153
154 ibdev->roce.last_port_state = port_state;
155 ibev.device = &ibdev->ib_dev;
156 if (port_state == IB_PORT_DOWN)
157 ibev.event = IB_EVENT_PORT_ERR;
158 else if (port_state == IB_PORT_ACTIVE)
159 ibev.event = IB_EVENT_PORT_ACTIVE;
160 else
161 return NOTIFY_DONE;
162
163 ibev.element.port_num = 1;
164 ib_dispatch_event(&ibev);
165 }
166 break;
167 }
168
169 default:
170 break;
171 }
172
173 return NOTIFY_DONE;
174 }
175
176 static struct net_device *mlx5_ib_get_netdev(struct ib_device *device,
177 u8 port_num)
178 {
179 struct mlx5_ib_dev *ibdev = to_mdev(device);
180 struct net_device *ndev;
181
182 ndev = mlx5_lag_get_roce_netdev(ibdev->mdev);
183 if (ndev)
184 return ndev;
185
186 /* Ensure ndev does not disappear before we invoke dev_hold()
187 */
188 read_lock(&ibdev->roce.netdev_lock);
189 ndev = ibdev->roce.netdev;
190 if (ndev)
191 dev_hold(ndev);
192 read_unlock(&ibdev->roce.netdev_lock);
193
194 return ndev;
195 }
196
197 static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed,
198 u8 *active_width)
199 {
200 switch (eth_proto_oper) {
201 case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII):
202 case MLX5E_PROT_MASK(MLX5E_1000BASE_KX):
203 case MLX5E_PROT_MASK(MLX5E_100BASE_TX):
204 case MLX5E_PROT_MASK(MLX5E_1000BASE_T):
205 *active_width = IB_WIDTH_1X;
206 *active_speed = IB_SPEED_SDR;
207 break;
208 case MLX5E_PROT_MASK(MLX5E_10GBASE_T):
209 case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4):
210 case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4):
211 case MLX5E_PROT_MASK(MLX5E_10GBASE_KR):
212 case MLX5E_PROT_MASK(MLX5E_10GBASE_CR):
213 case MLX5E_PROT_MASK(MLX5E_10GBASE_SR):
214 case MLX5E_PROT_MASK(MLX5E_10GBASE_ER):
215 *active_width = IB_WIDTH_1X;
216 *active_speed = IB_SPEED_QDR;
217 break;
218 case MLX5E_PROT_MASK(MLX5E_25GBASE_CR):
219 case MLX5E_PROT_MASK(MLX5E_25GBASE_KR):
220 case MLX5E_PROT_MASK(MLX5E_25GBASE_SR):
221 *active_width = IB_WIDTH_1X;
222 *active_speed = IB_SPEED_EDR;
223 break;
224 case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4):
225 case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4):
226 case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4):
227 case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4):
228 *active_width = IB_WIDTH_4X;
229 *active_speed = IB_SPEED_QDR;
230 break;
231 case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2):
232 case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2):
233 case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2):
234 *active_width = IB_WIDTH_1X;
235 *active_speed = IB_SPEED_HDR;
236 break;
237 case MLX5E_PROT_MASK(MLX5E_56GBASE_R4):
238 *active_width = IB_WIDTH_4X;
239 *active_speed = IB_SPEED_FDR;
240 break;
241 case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4):
242 case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4):
243 case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4):
244 case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4):
245 *active_width = IB_WIDTH_4X;
246 *active_speed = IB_SPEED_EDR;
247 break;
248 default:
249 return -EINVAL;
250 }
251
252 return 0;
253 }
254
255 static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
256 struct ib_port_attr *props)
257 {
258 struct mlx5_ib_dev *dev = to_mdev(device);
259 struct mlx5_core_dev *mdev = dev->mdev;
260 struct net_device *ndev, *upper;
261 enum ib_mtu ndev_ib_mtu;
262 u16 qkey_viol_cntr;
263 u32 eth_prot_oper;
264 int err;
265
266 /* Possible bad flows are checked before filling out props so in case
267 * of an error it will still be zeroed out.
268 */
269 err = mlx5_query_port_eth_proto_oper(mdev, &eth_prot_oper, port_num);
270 if (err)
271 return err;
272
273 translate_eth_proto_oper(eth_prot_oper, &props->active_speed,
274 &props->active_width);
275
276 props->port_cap_flags |= IB_PORT_CM_SUP;
277 props->port_cap_flags |= IB_PORT_IP_BASED_GIDS;
278
279 props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev,
280 roce_address_table_size);
281 props->max_mtu = IB_MTU_4096;
282 props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg);
283 props->pkey_tbl_len = 1;
284 props->state = IB_PORT_DOWN;
285 props->phys_state = 3;
286
287 mlx5_query_nic_vport_qkey_viol_cntr(dev->mdev, &qkey_viol_cntr);
288 props->qkey_viol_cntr = qkey_viol_cntr;
289
290 ndev = mlx5_ib_get_netdev(device, port_num);
291 if (!ndev)
292 return 0;
293
294 if (mlx5_lag_is_active(dev->mdev)) {
295 rcu_read_lock();
296 upper = netdev_master_upper_dev_get_rcu(ndev);
297 if (upper) {
298 dev_put(ndev);
299 ndev = upper;
300 dev_hold(ndev);
301 }
302 rcu_read_unlock();
303 }
304
305 if (netif_running(ndev) && netif_carrier_ok(ndev)) {
306 props->state = IB_PORT_ACTIVE;
307 props->phys_state = 5;
308 }
309
310 ndev_ib_mtu = iboe_get_mtu(ndev->mtu);
311
312 dev_put(ndev);
313
314 props->active_mtu = min(props->max_mtu, ndev_ib_mtu);
315 return 0;
316 }
317
318 static int set_roce_addr(struct mlx5_ib_dev *dev, u8 port_num,
319 unsigned int index, const union ib_gid *gid,
320 const struct ib_gid_attr *attr)
321 {
322 enum ib_gid_type gid_type = IB_GID_TYPE_IB;
323 u8 roce_version = 0;
324 u8 roce_l3_type = 0;
325 bool vlan = false;
326 u8 mac[ETH_ALEN];
327 u16 vlan_id = 0;
328
329 if (gid) {
330 gid_type = attr->gid_type;
331 ether_addr_copy(mac, attr->ndev->dev_addr);
332
333 if (is_vlan_dev(attr->ndev)) {
334 vlan = true;
335 vlan_id = vlan_dev_vlan_id(attr->ndev);
336 }
337 }
338
339 switch (gid_type) {
340 case IB_GID_TYPE_IB:
341 roce_version = MLX5_ROCE_VERSION_1;
342 break;
343 case IB_GID_TYPE_ROCE_UDP_ENCAP:
344 roce_version = MLX5_ROCE_VERSION_2;
345 if (ipv6_addr_v4mapped((void *)gid))
346 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV4;
347 else
348 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV6;
349 break;
350
351 default:
352 mlx5_ib_warn(dev, "Unexpected GID type %u\n", gid_type);
353 }
354
355 return mlx5_core_roce_gid_set(dev->mdev, index, roce_version,
356 roce_l3_type, gid->raw, mac, vlan,
357 vlan_id);
358 }
359
360 static int mlx5_ib_add_gid(struct ib_device *device, u8 port_num,
361 unsigned int index, const union ib_gid *gid,
362 const struct ib_gid_attr *attr,
363 __always_unused void **context)
364 {
365 return set_roce_addr(to_mdev(device), port_num, index, gid, attr);
366 }
367
368 static int mlx5_ib_del_gid(struct ib_device *device, u8 port_num,
369 unsigned int index, __always_unused void **context)
370 {
371 return set_roce_addr(to_mdev(device), port_num, index, NULL, NULL);
372 }
373
374 __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num,
375 int index)
376 {
377 struct ib_gid_attr attr;
378 union ib_gid gid;
379
380 if (ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr))
381 return 0;
382
383 if (!attr.ndev)
384 return 0;
385
386 dev_put(attr.ndev);
387
388 if (attr.gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
389 return 0;
390
391 return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port));
392 }
393
394 int mlx5_get_roce_gid_type(struct mlx5_ib_dev *dev, u8 port_num,
395 int index, enum ib_gid_type *gid_type)
396 {
397 struct ib_gid_attr attr;
398 union ib_gid gid;
399 int ret;
400
401 ret = ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr);
402 if (ret)
403 return ret;
404
405 if (!attr.ndev)
406 return -ENODEV;
407
408 dev_put(attr.ndev);
409
410 *gid_type = attr.gid_type;
411
412 return 0;
413 }
414
415 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
416 {
417 if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB)
418 return !MLX5_CAP_GEN(dev->mdev, ib_virt);
419 return 0;
420 }
421
422 enum {
423 MLX5_VPORT_ACCESS_METHOD_MAD,
424 MLX5_VPORT_ACCESS_METHOD_HCA,
425 MLX5_VPORT_ACCESS_METHOD_NIC,
426 };
427
428 static int mlx5_get_vport_access_method(struct ib_device *ibdev)
429 {
430 if (mlx5_use_mad_ifc(to_mdev(ibdev)))
431 return MLX5_VPORT_ACCESS_METHOD_MAD;
432
433 if (mlx5_ib_port_link_layer(ibdev, 1) ==
434 IB_LINK_LAYER_ETHERNET)
435 return MLX5_VPORT_ACCESS_METHOD_NIC;
436
437 return MLX5_VPORT_ACCESS_METHOD_HCA;
438 }
439
440 static void get_atomic_caps(struct mlx5_ib_dev *dev,
441 struct ib_device_attr *props)
442 {
443 u8 tmp;
444 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
445 u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
446 u8 atomic_req_8B_endianness_mode =
447 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianness_mode);
448
449 /* Check if HW supports 8 bytes standard atomic operations and capable
450 * of host endianness respond
451 */
452 tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD;
453 if (((atomic_operations & tmp) == tmp) &&
454 (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) &&
455 (atomic_req_8B_endianness_mode)) {
456 props->atomic_cap = IB_ATOMIC_HCA;
457 } else {
458 props->atomic_cap = IB_ATOMIC_NONE;
459 }
460 }
461
462 static int mlx5_query_system_image_guid(struct ib_device *ibdev,
463 __be64 *sys_image_guid)
464 {
465 struct mlx5_ib_dev *dev = to_mdev(ibdev);
466 struct mlx5_core_dev *mdev = dev->mdev;
467 u64 tmp;
468 int err;
469
470 switch (mlx5_get_vport_access_method(ibdev)) {
471 case MLX5_VPORT_ACCESS_METHOD_MAD:
472 return mlx5_query_mad_ifc_system_image_guid(ibdev,
473 sys_image_guid);
474
475 case MLX5_VPORT_ACCESS_METHOD_HCA:
476 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
477 break;
478
479 case MLX5_VPORT_ACCESS_METHOD_NIC:
480 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp);
481 break;
482
483 default:
484 return -EINVAL;
485 }
486
487 if (!err)
488 *sys_image_guid = cpu_to_be64(tmp);
489
490 return err;
491
492 }
493
494 static int mlx5_query_max_pkeys(struct ib_device *ibdev,
495 u16 *max_pkeys)
496 {
497 struct mlx5_ib_dev *dev = to_mdev(ibdev);
498 struct mlx5_core_dev *mdev = dev->mdev;
499
500 switch (mlx5_get_vport_access_method(ibdev)) {
501 case MLX5_VPORT_ACCESS_METHOD_MAD:
502 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys);
503
504 case MLX5_VPORT_ACCESS_METHOD_HCA:
505 case MLX5_VPORT_ACCESS_METHOD_NIC:
506 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev,
507 pkey_table_size));
508 return 0;
509
510 default:
511 return -EINVAL;
512 }
513 }
514
515 static int mlx5_query_vendor_id(struct ib_device *ibdev,
516 u32 *vendor_id)
517 {
518 struct mlx5_ib_dev *dev = to_mdev(ibdev);
519
520 switch (mlx5_get_vport_access_method(ibdev)) {
521 case MLX5_VPORT_ACCESS_METHOD_MAD:
522 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id);
523
524 case MLX5_VPORT_ACCESS_METHOD_HCA:
525 case MLX5_VPORT_ACCESS_METHOD_NIC:
526 return mlx5_core_query_vendor_id(dev->mdev, vendor_id);
527
528 default:
529 return -EINVAL;
530 }
531 }
532
533 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
534 __be64 *node_guid)
535 {
536 u64 tmp;
537 int err;
538
539 switch (mlx5_get_vport_access_method(&dev->ib_dev)) {
540 case MLX5_VPORT_ACCESS_METHOD_MAD:
541 return mlx5_query_mad_ifc_node_guid(dev, node_guid);
542
543 case MLX5_VPORT_ACCESS_METHOD_HCA:
544 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
545 break;
546
547 case MLX5_VPORT_ACCESS_METHOD_NIC:
548 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp);
549 break;
550
551 default:
552 return -EINVAL;
553 }
554
555 if (!err)
556 *node_guid = cpu_to_be64(tmp);
557
558 return err;
559 }
560
561 struct mlx5_reg_node_desc {
562 u8 desc[IB_DEVICE_NODE_DESC_MAX];
563 };
564
565 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
566 {
567 struct mlx5_reg_node_desc in;
568
569 if (mlx5_use_mad_ifc(dev))
570 return mlx5_query_mad_ifc_node_desc(dev, node_desc);
571
572 memset(&in, 0, sizeof(in));
573
574 return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc,
575 sizeof(struct mlx5_reg_node_desc),
576 MLX5_REG_NODE_DESC, 0, 0);
577 }
578
579 static int mlx5_ib_query_device(struct ib_device *ibdev,
580 struct ib_device_attr *props,
581 struct ib_udata *uhw)
582 {
583 struct mlx5_ib_dev *dev = to_mdev(ibdev);
584 struct mlx5_core_dev *mdev = dev->mdev;
585 int err = -ENOMEM;
586 int max_sq_desc;
587 int max_rq_sg;
588 int max_sq_sg;
589 u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
590 struct mlx5_ib_query_device_resp resp = {};
591 size_t resp_len;
592 u64 max_tso;
593
594 resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length);
595 if (uhw->outlen && uhw->outlen < resp_len)
596 return -EINVAL;
597 else
598 resp.response_length = resp_len;
599
600 if (uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen))
601 return -EINVAL;
602
603 memset(props, 0, sizeof(*props));
604 err = mlx5_query_system_image_guid(ibdev,
605 &props->sys_image_guid);
606 if (err)
607 return err;
608
609 err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys);
610 if (err)
611 return err;
612
613 err = mlx5_query_vendor_id(ibdev, &props->vendor_id);
614 if (err)
615 return err;
616
617 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
618 (fw_rev_min(dev->mdev) << 16) |
619 fw_rev_sub(dev->mdev);
620 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
621 IB_DEVICE_PORT_ACTIVE_EVENT |
622 IB_DEVICE_SYS_IMAGE_GUID |
623 IB_DEVICE_RC_RNR_NAK_GEN;
624
625 if (MLX5_CAP_GEN(mdev, pkv))
626 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
627 if (MLX5_CAP_GEN(mdev, qkv))
628 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
629 if (MLX5_CAP_GEN(mdev, apm))
630 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
631 if (MLX5_CAP_GEN(mdev, xrc))
632 props->device_cap_flags |= IB_DEVICE_XRC;
633 if (MLX5_CAP_GEN(mdev, imaicl)) {
634 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW |
635 IB_DEVICE_MEM_WINDOW_TYPE_2B;
636 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
637 /* We support 'Gappy' memory registration too */
638 props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG;
639 }
640 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
641 if (MLX5_CAP_GEN(mdev, sho)) {
642 props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
643 /* At this stage no support for signature handover */
644 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
645 IB_PROT_T10DIF_TYPE_2 |
646 IB_PROT_T10DIF_TYPE_3;
647 props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
648 IB_GUARD_T10DIF_CSUM;
649 }
650 if (MLX5_CAP_GEN(mdev, block_lb_mc))
651 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
652
653 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads)) {
654 if (MLX5_CAP_ETH(mdev, csum_cap)) {
655 /* Legacy bit to support old userspace libraries */
656 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
657 props->raw_packet_caps |= IB_RAW_PACKET_CAP_IP_CSUM;
658 }
659
660 if (MLX5_CAP_ETH(dev->mdev, vlan_cap))
661 props->raw_packet_caps |=
662 IB_RAW_PACKET_CAP_CVLAN_STRIPPING;
663
664 if (field_avail(typeof(resp), tso_caps, uhw->outlen)) {
665 max_tso = MLX5_CAP_ETH(mdev, max_lso_cap);
666 if (max_tso) {
667 resp.tso_caps.max_tso = 1 << max_tso;
668 resp.tso_caps.supported_qpts |=
669 1 << IB_QPT_RAW_PACKET;
670 resp.response_length += sizeof(resp.tso_caps);
671 }
672 }
673
674 if (field_avail(typeof(resp), rss_caps, uhw->outlen)) {
675 resp.rss_caps.rx_hash_function =
676 MLX5_RX_HASH_FUNC_TOEPLITZ;
677 resp.rss_caps.rx_hash_fields_mask =
678 MLX5_RX_HASH_SRC_IPV4 |
679 MLX5_RX_HASH_DST_IPV4 |
680 MLX5_RX_HASH_SRC_IPV6 |
681 MLX5_RX_HASH_DST_IPV6 |
682 MLX5_RX_HASH_SRC_PORT_TCP |
683 MLX5_RX_HASH_DST_PORT_TCP |
684 MLX5_RX_HASH_SRC_PORT_UDP |
685 MLX5_RX_HASH_DST_PORT_UDP;
686 resp.response_length += sizeof(resp.rss_caps);
687 }
688 } else {
689 if (field_avail(typeof(resp), tso_caps, uhw->outlen))
690 resp.response_length += sizeof(resp.tso_caps);
691 if (field_avail(typeof(resp), rss_caps, uhw->outlen))
692 resp.response_length += sizeof(resp.rss_caps);
693 }
694
695 if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
696 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
697 props->device_cap_flags |= IB_DEVICE_UD_TSO;
698 }
699
700 if (MLX5_CAP_GEN(dev->mdev, rq_delay_drop) &&
701 MLX5_CAP_GEN(dev->mdev, general_notification_event))
702 props->raw_packet_caps |= IB_RAW_PACKET_CAP_DELAY_DROP;
703
704 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
705 MLX5_CAP_IPOIB_ENHANCED(mdev, csum_cap))
706 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
707
708 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
709 MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {
710 /* Legacy bit to support old userspace libraries */
711 props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS;
712 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
713 }
714
715 if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS))
716 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
717
718 if (MLX5_CAP_GEN(mdev, end_pad))
719 props->device_cap_flags |= IB_DEVICE_PCI_WRITE_END_PADDING;
720
721 props->vendor_part_id = mdev->pdev->device;
722 props->hw_ver = mdev->pdev->revision;
723
724 props->max_mr_size = ~0ull;
725 props->page_size_cap = ~(min_page_size - 1);
726 props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp);
727 props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
728 max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) /
729 sizeof(struct mlx5_wqe_data_seg);
730 max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512);
731 max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) -
732 sizeof(struct mlx5_wqe_raddr_seg)) /
733 sizeof(struct mlx5_wqe_data_seg);
734 props->max_sge = min(max_rq_sg, max_sq_sg);
735 props->max_sge_rd = MLX5_MAX_SGE_RD;
736 props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq);
737 props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1;
738 props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
739 props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd);
740 props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp);
741 props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp);
742 props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq);
743 props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1;
744 props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay);
745 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
746 props->max_srq_sge = max_rq_sg - 1;
747 props->max_fast_reg_page_list_len =
748 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size);
749 get_atomic_caps(dev, props);
750 props->masked_atomic_cap = IB_ATOMIC_NONE;
751 props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg);
752 props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
753 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
754 props->max_mcast_grp;
755 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
756 props->max_ah = INT_MAX;
757 props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz);
758 props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
759
760 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
761 if (MLX5_CAP_GEN(mdev, pg))
762 props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
763 props->odp_caps = dev->odp_caps;
764 #endif
765
766 if (MLX5_CAP_GEN(mdev, cd))
767 props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL;
768
769 if (!mlx5_core_is_pf(mdev))
770 props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION;
771
772 if (mlx5_ib_port_link_layer(ibdev, 1) ==
773 IB_LINK_LAYER_ETHERNET) {
774 props->rss_caps.max_rwq_indirection_tables =
775 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt);
776 props->rss_caps.max_rwq_indirection_table_size =
777 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size);
778 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
779 props->max_wq_type_rq =
780 1 << MLX5_CAP_GEN(dev->mdev, log_max_rq);
781 }
782
783 if (MLX5_CAP_GEN(mdev, tag_matching)) {
784 props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE;
785 props->tm_caps.max_num_tags =
786 (1 << MLX5_CAP_GEN(mdev, log_tag_matching_list_sz)) - 1;
787 props->tm_caps.flags = IB_TM_CAP_RC;
788 props->tm_caps.max_ops =
789 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
790 props->tm_caps.max_sge = MLX5_TM_MAX_SGE;
791 }
792
793 if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) {
794 props->cq_caps.max_cq_moderation_count =
795 MLX5_MAX_CQ_COUNT;
796 props->cq_caps.max_cq_moderation_period =
797 MLX5_MAX_CQ_PERIOD;
798 }
799
800 if (field_avail(typeof(resp), cqe_comp_caps, uhw->outlen)) {
801 resp.cqe_comp_caps.max_num =
802 MLX5_CAP_GEN(dev->mdev, cqe_compression) ?
803 MLX5_CAP_GEN(dev->mdev, cqe_compression_max_num) : 0;
804 resp.cqe_comp_caps.supported_format =
805 MLX5_IB_CQE_RES_FORMAT_HASH |
806 MLX5_IB_CQE_RES_FORMAT_CSUM;
807 resp.response_length += sizeof(resp.cqe_comp_caps);
808 }
809
810 if (field_avail(typeof(resp), packet_pacing_caps, uhw->outlen)) {
811 if (MLX5_CAP_QOS(mdev, packet_pacing) &&
812 MLX5_CAP_GEN(mdev, qos)) {
813 resp.packet_pacing_caps.qp_rate_limit_max =
814 MLX5_CAP_QOS(mdev, packet_pacing_max_rate);
815 resp.packet_pacing_caps.qp_rate_limit_min =
816 MLX5_CAP_QOS(mdev, packet_pacing_min_rate);
817 resp.packet_pacing_caps.supported_qpts |=
818 1 << IB_QPT_RAW_PACKET;
819 }
820 resp.response_length += sizeof(resp.packet_pacing_caps);
821 }
822
823 if (field_avail(typeof(resp), mlx5_ib_support_multi_pkt_send_wqes,
824 uhw->outlen)) {
825 if (MLX5_CAP_ETH(mdev, multi_pkt_send_wqe))
826 resp.mlx5_ib_support_multi_pkt_send_wqes =
827 MLX5_IB_ALLOW_MPW;
828
829 if (MLX5_CAP_ETH(mdev, enhanced_multi_pkt_send_wqe))
830 resp.mlx5_ib_support_multi_pkt_send_wqes |=
831 MLX5_IB_SUPPORT_EMPW;
832
833 resp.response_length +=
834 sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes);
835 }
836
837 if (field_avail(typeof(resp), flags, uhw->outlen)) {
838 resp.response_length += sizeof(resp.flags);
839
840 if (MLX5_CAP_GEN(mdev, cqe_compression_128))
841 resp.flags |=
842 MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP;
843
844 if (MLX5_CAP_GEN(mdev, cqe_128_always))
845 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_PAD;
846 }
847
848 if (field_avail(typeof(resp), sw_parsing_caps,
849 uhw->outlen)) {
850 resp.response_length += sizeof(resp.sw_parsing_caps);
851 if (MLX5_CAP_ETH(mdev, swp)) {
852 resp.sw_parsing_caps.sw_parsing_offloads |=
853 MLX5_IB_SW_PARSING;
854
855 if (MLX5_CAP_ETH(mdev, swp_csum))
856 resp.sw_parsing_caps.sw_parsing_offloads |=
857 MLX5_IB_SW_PARSING_CSUM;
858
859 if (MLX5_CAP_ETH(mdev, swp_lso))
860 resp.sw_parsing_caps.sw_parsing_offloads |=
861 MLX5_IB_SW_PARSING_LSO;
862
863 if (resp.sw_parsing_caps.sw_parsing_offloads)
864 resp.sw_parsing_caps.supported_qpts =
865 BIT(IB_QPT_RAW_PACKET);
866 }
867 }
868
869 if (field_avail(typeof(resp), striding_rq_caps, uhw->outlen)) {
870 resp.response_length += sizeof(resp.striding_rq_caps);
871 if (MLX5_CAP_GEN(mdev, striding_rq)) {
872 resp.striding_rq_caps.min_single_stride_log_num_of_bytes =
873 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES;
874 resp.striding_rq_caps.max_single_stride_log_num_of_bytes =
875 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES;
876 resp.striding_rq_caps.min_single_wqe_log_num_of_strides =
877 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES;
878 resp.striding_rq_caps.max_single_wqe_log_num_of_strides =
879 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES;
880 resp.striding_rq_caps.supported_qpts =
881 BIT(IB_QPT_RAW_PACKET);
882 }
883 }
884
885 if (field_avail(typeof(resp), tunnel_offloads_caps,
886 uhw->outlen)) {
887 resp.response_length += sizeof(resp.tunnel_offloads_caps);
888 if (MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan))
889 resp.tunnel_offloads_caps |=
890 MLX5_IB_TUNNELED_OFFLOADS_VXLAN;
891 if (MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx))
892 resp.tunnel_offloads_caps |=
893 MLX5_IB_TUNNELED_OFFLOADS_GENEVE;
894 if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre))
895 resp.tunnel_offloads_caps |=
896 MLX5_IB_TUNNELED_OFFLOADS_GRE;
897 }
898
899 if (uhw->outlen) {
900 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
901
902 if (err)
903 return err;
904 }
905
906 return 0;
907 }
908
909 enum mlx5_ib_width {
910 MLX5_IB_WIDTH_1X = 1 << 0,
911 MLX5_IB_WIDTH_2X = 1 << 1,
912 MLX5_IB_WIDTH_4X = 1 << 2,
913 MLX5_IB_WIDTH_8X = 1 << 3,
914 MLX5_IB_WIDTH_12X = 1 << 4
915 };
916
917 static int translate_active_width(struct ib_device *ibdev, u8 active_width,
918 u8 *ib_width)
919 {
920 struct mlx5_ib_dev *dev = to_mdev(ibdev);
921 int err = 0;
922
923 if (active_width & MLX5_IB_WIDTH_1X) {
924 *ib_width = IB_WIDTH_1X;
925 } else if (active_width & MLX5_IB_WIDTH_2X) {
926 mlx5_ib_dbg(dev, "active_width %d is not supported by IB spec\n",
927 (int)active_width);
928 err = -EINVAL;
929 } else if (active_width & MLX5_IB_WIDTH_4X) {
930 *ib_width = IB_WIDTH_4X;
931 } else if (active_width & MLX5_IB_WIDTH_8X) {
932 *ib_width = IB_WIDTH_8X;
933 } else if (active_width & MLX5_IB_WIDTH_12X) {
934 *ib_width = IB_WIDTH_12X;
935 } else {
936 mlx5_ib_dbg(dev, "Invalid active_width %d\n",
937 (int)active_width);
938 err = -EINVAL;
939 }
940
941 return err;
942 }
943
944 static int mlx5_mtu_to_ib_mtu(int mtu)
945 {
946 switch (mtu) {
947 case 256: return 1;
948 case 512: return 2;
949 case 1024: return 3;
950 case 2048: return 4;
951 case 4096: return 5;
952 default:
953 pr_warn("invalid mtu\n");
954 return -1;
955 }
956 }
957
958 enum ib_max_vl_num {
959 __IB_MAX_VL_0 = 1,
960 __IB_MAX_VL_0_1 = 2,
961 __IB_MAX_VL_0_3 = 3,
962 __IB_MAX_VL_0_7 = 4,
963 __IB_MAX_VL_0_14 = 5,
964 };
965
966 enum mlx5_vl_hw_cap {
967 MLX5_VL_HW_0 = 1,
968 MLX5_VL_HW_0_1 = 2,
969 MLX5_VL_HW_0_2 = 3,
970 MLX5_VL_HW_0_3 = 4,
971 MLX5_VL_HW_0_4 = 5,
972 MLX5_VL_HW_0_5 = 6,
973 MLX5_VL_HW_0_6 = 7,
974 MLX5_VL_HW_0_7 = 8,
975 MLX5_VL_HW_0_14 = 15
976 };
977
978 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap,
979 u8 *max_vl_num)
980 {
981 switch (vl_hw_cap) {
982 case MLX5_VL_HW_0:
983 *max_vl_num = __IB_MAX_VL_0;
984 break;
985 case MLX5_VL_HW_0_1:
986 *max_vl_num = __IB_MAX_VL_0_1;
987 break;
988 case MLX5_VL_HW_0_3:
989 *max_vl_num = __IB_MAX_VL_0_3;
990 break;
991 case MLX5_VL_HW_0_7:
992 *max_vl_num = __IB_MAX_VL_0_7;
993 break;
994 case MLX5_VL_HW_0_14:
995 *max_vl_num = __IB_MAX_VL_0_14;
996 break;
997
998 default:
999 return -EINVAL;
1000 }
1001
1002 return 0;
1003 }
1004
1005 static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port,
1006 struct ib_port_attr *props)
1007 {
1008 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1009 struct mlx5_core_dev *mdev = dev->mdev;
1010 struct mlx5_hca_vport_context *rep;
1011 u16 max_mtu;
1012 u16 oper_mtu;
1013 int err;
1014 u8 ib_link_width_oper;
1015 u8 vl_hw_cap;
1016
1017 rep = kzalloc(sizeof(*rep), GFP_KERNEL);
1018 if (!rep) {
1019 err = -ENOMEM;
1020 goto out;
1021 }
1022
1023 /* props being zeroed by the caller, avoid zeroing it here */
1024
1025 err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep);
1026 if (err)
1027 goto out;
1028
1029 props->lid = rep->lid;
1030 props->lmc = rep->lmc;
1031 props->sm_lid = rep->sm_lid;
1032 props->sm_sl = rep->sm_sl;
1033 props->state = rep->vport_state;
1034 props->phys_state = rep->port_physical_state;
1035 props->port_cap_flags = rep->cap_mask1;
1036 props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size));
1037 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
1038 props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size));
1039 props->bad_pkey_cntr = rep->pkey_violation_counter;
1040 props->qkey_viol_cntr = rep->qkey_violation_counter;
1041 props->subnet_timeout = rep->subnet_timeout;
1042 props->init_type_reply = rep->init_type_reply;
1043 props->grh_required = rep->grh_required;
1044
1045 err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port);
1046 if (err)
1047 goto out;
1048
1049 err = translate_active_width(ibdev, ib_link_width_oper,
1050 &props->active_width);
1051 if (err)
1052 goto out;
1053 err = mlx5_query_port_ib_proto_oper(mdev, &props->active_speed, port);
1054 if (err)
1055 goto out;
1056
1057 mlx5_query_port_max_mtu(mdev, &max_mtu, port);
1058
1059 props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu);
1060
1061 mlx5_query_port_oper_mtu(mdev, &oper_mtu, port);
1062
1063 props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu);
1064
1065 err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port);
1066 if (err)
1067 goto out;
1068
1069 err = translate_max_vl_num(ibdev, vl_hw_cap,
1070 &props->max_vl_num);
1071 out:
1072 kfree(rep);
1073 return err;
1074 }
1075
1076 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
1077 struct ib_port_attr *props)
1078 {
1079 unsigned int count;
1080 int ret;
1081
1082 switch (mlx5_get_vport_access_method(ibdev)) {
1083 case MLX5_VPORT_ACCESS_METHOD_MAD:
1084 ret = mlx5_query_mad_ifc_port(ibdev, port, props);
1085 break;
1086
1087 case MLX5_VPORT_ACCESS_METHOD_HCA:
1088 ret = mlx5_query_hca_port(ibdev, port, props);
1089 break;
1090
1091 case MLX5_VPORT_ACCESS_METHOD_NIC:
1092 ret = mlx5_query_port_roce(ibdev, port, props);
1093 break;
1094
1095 default:
1096 ret = -EINVAL;
1097 }
1098
1099 if (!ret && props) {
1100 count = mlx5_core_reserved_gids_count(to_mdev(ibdev)->mdev);
1101 props->gid_tbl_len -= count;
1102 }
1103 return ret;
1104 }
1105
1106 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
1107 union ib_gid *gid)
1108 {
1109 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1110 struct mlx5_core_dev *mdev = dev->mdev;
1111
1112 switch (mlx5_get_vport_access_method(ibdev)) {
1113 case MLX5_VPORT_ACCESS_METHOD_MAD:
1114 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid);
1115
1116 case MLX5_VPORT_ACCESS_METHOD_HCA:
1117 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid);
1118
1119 default:
1120 return -EINVAL;
1121 }
1122
1123 }
1124
1125 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
1126 u16 *pkey)
1127 {
1128 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1129 struct mlx5_core_dev *mdev = dev->mdev;
1130
1131 switch (mlx5_get_vport_access_method(ibdev)) {
1132 case MLX5_VPORT_ACCESS_METHOD_MAD:
1133 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey);
1134
1135 case MLX5_VPORT_ACCESS_METHOD_HCA:
1136 case MLX5_VPORT_ACCESS_METHOD_NIC:
1137 return mlx5_query_hca_vport_pkey(mdev, 0, port, 0, index,
1138 pkey);
1139 default:
1140 return -EINVAL;
1141 }
1142 }
1143
1144 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
1145 struct ib_device_modify *props)
1146 {
1147 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1148 struct mlx5_reg_node_desc in;
1149 struct mlx5_reg_node_desc out;
1150 int err;
1151
1152 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
1153 return -EOPNOTSUPP;
1154
1155 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1156 return 0;
1157
1158 /*
1159 * If possible, pass node desc to FW, so it can generate
1160 * a 144 trap. If cmd fails, just ignore.
1161 */
1162 memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1163 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
1164 sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
1165 if (err)
1166 return err;
1167
1168 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1169
1170 return err;
1171 }
1172
1173 static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u8 port_num, u32 mask,
1174 u32 value)
1175 {
1176 struct mlx5_hca_vport_context ctx = {};
1177 int err;
1178
1179 err = mlx5_query_hca_vport_context(dev->mdev, 0,
1180 port_num, 0, &ctx);
1181 if (err)
1182 return err;
1183
1184 if (~ctx.cap_mask1_perm & mask) {
1185 mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n",
1186 mask, ctx.cap_mask1_perm);
1187 return -EINVAL;
1188 }
1189
1190 ctx.cap_mask1 = value;
1191 ctx.cap_mask1_perm = mask;
1192 err = mlx5_core_modify_hca_vport_context(dev->mdev, 0,
1193 port_num, 0, &ctx);
1194
1195 return err;
1196 }
1197
1198 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1199 struct ib_port_modify *props)
1200 {
1201 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1202 struct ib_port_attr attr;
1203 u32 tmp;
1204 int err;
1205 u32 change_mask;
1206 u32 value;
1207 bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) ==
1208 IB_LINK_LAYER_INFINIBAND);
1209
1210 /* CM layer calls ib_modify_port() regardless of the link layer. For
1211 * Ethernet ports, qkey violation and Port capabilities are meaningless.
1212 */
1213 if (!is_ib)
1214 return 0;
1215
1216 if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) {
1217 change_mask = props->clr_port_cap_mask | props->set_port_cap_mask;
1218 value = ~props->clr_port_cap_mask | props->set_port_cap_mask;
1219 return set_port_caps_atomic(dev, port, change_mask, value);
1220 }
1221
1222 mutex_lock(&dev->cap_mask_mutex);
1223
1224 err = ib_query_port(ibdev, port, &attr);
1225 if (err)
1226 goto out;
1227
1228 tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
1229 ~props->clr_port_cap_mask;
1230
1231 err = mlx5_set_port_caps(dev->mdev, port, tmp);
1232
1233 out:
1234 mutex_unlock(&dev->cap_mask_mutex);
1235 return err;
1236 }
1237
1238 static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps)
1239 {
1240 mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n",
1241 caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n");
1242 }
1243
1244 static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k,
1245 struct mlx5_ib_alloc_ucontext_req_v2 *req,
1246 u32 *num_sys_pages)
1247 {
1248 int uars_per_sys_page;
1249 int bfregs_per_sys_page;
1250 int ref_bfregs = req->total_num_bfregs;
1251
1252 if (req->total_num_bfregs == 0)
1253 return -EINVAL;
1254
1255 BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE);
1256 BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE);
1257
1258 if (req->total_num_bfregs > MLX5_MAX_BFREGS)
1259 return -ENOMEM;
1260
1261 uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k);
1262 bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR;
1263 req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page);
1264 *num_sys_pages = req->total_num_bfregs / bfregs_per_sys_page;
1265
1266 if (req->num_low_latency_bfregs > req->total_num_bfregs - 1)
1267 return -EINVAL;
1268
1269 mlx5_ib_dbg(dev, "uar_4k: fw support %s, lib support %s, user requested %d bfregs, allocated %d, using %d sys pages\n",
1270 MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no",
1271 lib_uar_4k ? "yes" : "no", ref_bfregs,
1272 req->total_num_bfregs, *num_sys_pages);
1273
1274 return 0;
1275 }
1276
1277 static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
1278 {
1279 struct mlx5_bfreg_info *bfregi;
1280 int err;
1281 int i;
1282
1283 bfregi = &context->bfregi;
1284 for (i = 0; i < bfregi->num_sys_pages; i++) {
1285 err = mlx5_cmd_alloc_uar(dev->mdev, &bfregi->sys_pages[i]);
1286 if (err)
1287 goto error;
1288
1289 mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]);
1290 }
1291 return 0;
1292
1293 error:
1294 for (--i; i >= 0; i--)
1295 if (mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]))
1296 mlx5_ib_warn(dev, "failed to free uar %d\n", i);
1297
1298 return err;
1299 }
1300
1301 static int deallocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
1302 {
1303 struct mlx5_bfreg_info *bfregi;
1304 int err;
1305 int i;
1306
1307 bfregi = &context->bfregi;
1308 for (i = 0; i < bfregi->num_sys_pages; i++) {
1309 err = mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]);
1310 if (err) {
1311 mlx5_ib_warn(dev, "failed to free uar %d\n", i);
1312 return err;
1313 }
1314 }
1315 return 0;
1316 }
1317
1318 static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn)
1319 {
1320 int err;
1321
1322 err = mlx5_core_alloc_transport_domain(dev->mdev, tdn);
1323 if (err)
1324 return err;
1325
1326 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
1327 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
1328 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
1329 return err;
1330
1331 mutex_lock(&dev->lb_mutex);
1332 dev->user_td++;
1333
1334 if (dev->user_td == 2)
1335 err = mlx5_nic_vport_update_local_lb(dev->mdev, true);
1336
1337 mutex_unlock(&dev->lb_mutex);
1338 return err;
1339 }
1340
1341 static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn)
1342 {
1343 mlx5_core_dealloc_transport_domain(dev->mdev, tdn);
1344
1345 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
1346 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
1347 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
1348 return;
1349
1350 mutex_lock(&dev->lb_mutex);
1351 dev->user_td--;
1352
1353 if (dev->user_td < 2)
1354 mlx5_nic_vport_update_local_lb(dev->mdev, false);
1355
1356 mutex_unlock(&dev->lb_mutex);
1357 }
1358
1359 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
1360 struct ib_udata *udata)
1361 {
1362 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1363 struct mlx5_ib_alloc_ucontext_req_v2 req = {};
1364 struct mlx5_ib_alloc_ucontext_resp resp = {};
1365 struct mlx5_ib_ucontext *context;
1366 struct mlx5_bfreg_info *bfregi;
1367 int ver;
1368 int err;
1369 size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2,
1370 max_cqe_version);
1371 bool lib_uar_4k;
1372
1373 if (!dev->ib_active)
1374 return ERR_PTR(-EAGAIN);
1375
1376 if (udata->inlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
1377 ver = 0;
1378 else if (udata->inlen >= min_req_v2)
1379 ver = 2;
1380 else
1381 return ERR_PTR(-EINVAL);
1382
1383 err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req)));
1384 if (err)
1385 return ERR_PTR(err);
1386
1387 if (req.flags)
1388 return ERR_PTR(-EINVAL);
1389
1390 if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2)
1391 return ERR_PTR(-EOPNOTSUPP);
1392
1393 req.total_num_bfregs = ALIGN(req.total_num_bfregs,
1394 MLX5_NON_FP_BFREGS_PER_UAR);
1395 if (req.num_low_latency_bfregs > req.total_num_bfregs - 1)
1396 return ERR_PTR(-EINVAL);
1397
1398 resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp);
1399 if (mlx5_core_is_pf(dev->mdev) && MLX5_CAP_GEN(dev->mdev, bf))
1400 resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size);
1401 resp.cache_line_size = cache_line_size();
1402 resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq);
1403 resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq);
1404 resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
1405 resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
1406 resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
1407 resp.cqe_version = min_t(__u8,
1408 (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version),
1409 req.max_cqe_version);
1410 resp.log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1411 MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT;
1412 resp.num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1413 MLX5_CAP_GEN(dev->mdev, num_of_uars_per_page) : 1;
1414 resp.response_length = min(offsetof(typeof(resp), response_length) +
1415 sizeof(resp.response_length), udata->outlen);
1416
1417 context = kzalloc(sizeof(*context), GFP_KERNEL);
1418 if (!context)
1419 return ERR_PTR(-ENOMEM);
1420
1421 lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR;
1422 bfregi = &context->bfregi;
1423
1424 /* updates req->total_num_bfregs */
1425 err = calc_total_bfregs(dev, lib_uar_4k, &req, &bfregi->num_sys_pages);
1426 if (err)
1427 goto out_ctx;
1428
1429 mutex_init(&bfregi->lock);
1430 bfregi->lib_uar_4k = lib_uar_4k;
1431 bfregi->count = kcalloc(req.total_num_bfregs, sizeof(*bfregi->count),
1432 GFP_KERNEL);
1433 if (!bfregi->count) {
1434 err = -ENOMEM;
1435 goto out_ctx;
1436 }
1437
1438 bfregi->sys_pages = kcalloc(bfregi->num_sys_pages,
1439 sizeof(*bfregi->sys_pages),
1440 GFP_KERNEL);
1441 if (!bfregi->sys_pages) {
1442 err = -ENOMEM;
1443 goto out_count;
1444 }
1445
1446 err = allocate_uars(dev, context);
1447 if (err)
1448 goto out_sys_pages;
1449
1450 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1451 context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
1452 #endif
1453
1454 context->upd_xlt_page = __get_free_page(GFP_KERNEL);
1455 if (!context->upd_xlt_page) {
1456 err = -ENOMEM;
1457 goto out_uars;
1458 }
1459 mutex_init(&context->upd_xlt_page_mutex);
1460
1461 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) {
1462 err = mlx5_ib_alloc_transport_domain(dev, &context->tdn);
1463 if (err)
1464 goto out_page;
1465 }
1466
1467 INIT_LIST_HEAD(&context->vma_private_list);
1468 mutex_init(&context->vma_private_list_mutex);
1469 INIT_LIST_HEAD(&context->db_page_list);
1470 mutex_init(&context->db_page_mutex);
1471
1472 resp.tot_bfregs = req.total_num_bfregs;
1473 resp.num_ports = MLX5_CAP_GEN(dev->mdev, num_ports);
1474
1475 if (field_avail(typeof(resp), cqe_version, udata->outlen))
1476 resp.response_length += sizeof(resp.cqe_version);
1477
1478 if (field_avail(typeof(resp), cmds_supp_uhw, udata->outlen)) {
1479 resp.cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE |
1480 MLX5_USER_CMDS_SUPP_UHW_CREATE_AH;
1481 resp.response_length += sizeof(resp.cmds_supp_uhw);
1482 }
1483
1484 if (field_avail(typeof(resp), eth_min_inline, udata->outlen)) {
1485 if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) {
1486 mlx5_query_min_inline(dev->mdev, &resp.eth_min_inline);
1487 resp.eth_min_inline++;
1488 }
1489 resp.response_length += sizeof(resp.eth_min_inline);
1490 }
1491
1492 /*
1493 * We don't want to expose information from the PCI bar that is located
1494 * after 4096 bytes, so if the arch only supports larger pages, let's
1495 * pretend we don't support reading the HCA's core clock. This is also
1496 * forced by mmap function.
1497 */
1498 if (field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) {
1499 if (PAGE_SIZE <= 4096) {
1500 resp.comp_mask |=
1501 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET;
1502 resp.hca_core_clock_offset =
1503 offsetof(struct mlx5_init_seg, internal_timer_h) % PAGE_SIZE;
1504 }
1505 resp.response_length += sizeof(resp.hca_core_clock_offset) +
1506 sizeof(resp.reserved2);
1507 }
1508
1509 if (field_avail(typeof(resp), log_uar_size, udata->outlen))
1510 resp.response_length += sizeof(resp.log_uar_size);
1511
1512 if (field_avail(typeof(resp), num_uars_per_page, udata->outlen))
1513 resp.response_length += sizeof(resp.num_uars_per_page);
1514
1515 err = ib_copy_to_udata(udata, &resp, resp.response_length);
1516 if (err)
1517 goto out_td;
1518
1519 bfregi->ver = ver;
1520 bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs;
1521 context->cqe_version = resp.cqe_version;
1522 context->lib_caps = req.lib_caps;
1523 print_lib_caps(dev, context->lib_caps);
1524
1525 return &context->ibucontext;
1526
1527 out_td:
1528 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1529 mlx5_ib_dealloc_transport_domain(dev, context->tdn);
1530
1531 out_page:
1532 free_page(context->upd_xlt_page);
1533
1534 out_uars:
1535 deallocate_uars(dev, context);
1536
1537 out_sys_pages:
1538 kfree(bfregi->sys_pages);
1539
1540 out_count:
1541 kfree(bfregi->count);
1542
1543 out_ctx:
1544 kfree(context);
1545
1546 return ERR_PTR(err);
1547 }
1548
1549 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1550 {
1551 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1552 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
1553 struct mlx5_bfreg_info *bfregi;
1554
1555 bfregi = &context->bfregi;
1556 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1557 mlx5_ib_dealloc_transport_domain(dev, context->tdn);
1558
1559 free_page(context->upd_xlt_page);
1560 deallocate_uars(dev, context);
1561 kfree(bfregi->sys_pages);
1562 kfree(bfregi->count);
1563 kfree(context);
1564
1565 return 0;
1566 }
1567
1568 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev,
1569 struct mlx5_bfreg_info *bfregi,
1570 int idx)
1571 {
1572 int fw_uars_per_page;
1573
1574 fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1;
1575
1576 return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) +
1577 bfregi->sys_pages[idx] / fw_uars_per_page;
1578 }
1579
1580 static int get_command(unsigned long offset)
1581 {
1582 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
1583 }
1584
1585 static int get_arg(unsigned long offset)
1586 {
1587 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
1588 }
1589
1590 static int get_index(unsigned long offset)
1591 {
1592 return get_arg(offset);
1593 }
1594
1595 static void mlx5_ib_vma_open(struct vm_area_struct *area)
1596 {
1597 /* vma_open is called when a new VMA is created on top of our VMA. This
1598 * is done through either mremap flow or split_vma (usually due to
1599 * mlock, madvise, munmap, etc.) We do not support a clone of the VMA,
1600 * as this VMA is strongly hardware related. Therefore we set the
1601 * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1602 * calling us again and trying to do incorrect actions. We assume that
1603 * the original VMA size is exactly a single page, and therefore all
1604 * "splitting" operation will not happen to it.
1605 */
1606 area->vm_ops = NULL;
1607 }
1608
1609 static void mlx5_ib_vma_close(struct vm_area_struct *area)
1610 {
1611 struct mlx5_ib_vma_private_data *mlx5_ib_vma_priv_data;
1612
1613 /* It's guaranteed that all VMAs opened on a FD are closed before the
1614 * file itself is closed, therefore no sync is needed with the regular
1615 * closing flow. (e.g. mlx5 ib_dealloc_ucontext)
1616 * However need a sync with accessing the vma as part of
1617 * mlx5_ib_disassociate_ucontext.
1618 * The close operation is usually called under mm->mmap_sem except when
1619 * process is exiting.
1620 * The exiting case is handled explicitly as part of
1621 * mlx5_ib_disassociate_ucontext.
1622 */
1623 mlx5_ib_vma_priv_data = (struct mlx5_ib_vma_private_data *)area->vm_private_data;
1624
1625 /* setting the vma context pointer to null in the mlx5_ib driver's
1626 * private data, to protect a race condition in
1627 * mlx5_ib_disassociate_ucontext().
1628 */
1629 mlx5_ib_vma_priv_data->vma = NULL;
1630 mutex_lock(mlx5_ib_vma_priv_data->vma_private_list_mutex);
1631 list_del(&mlx5_ib_vma_priv_data->list);
1632 mutex_unlock(mlx5_ib_vma_priv_data->vma_private_list_mutex);
1633 kfree(mlx5_ib_vma_priv_data);
1634 }
1635
1636 static const struct vm_operations_struct mlx5_ib_vm_ops = {
1637 .open = mlx5_ib_vma_open,
1638 .close = mlx5_ib_vma_close
1639 };
1640
1641 static int mlx5_ib_set_vma_data(struct vm_area_struct *vma,
1642 struct mlx5_ib_ucontext *ctx)
1643 {
1644 struct mlx5_ib_vma_private_data *vma_prv;
1645 struct list_head *vma_head = &ctx->vma_private_list;
1646
1647 vma_prv = kzalloc(sizeof(*vma_prv), GFP_KERNEL);
1648 if (!vma_prv)
1649 return -ENOMEM;
1650
1651 vma_prv->vma = vma;
1652 vma_prv->vma_private_list_mutex = &ctx->vma_private_list_mutex;
1653 vma->vm_private_data = vma_prv;
1654 vma->vm_ops = &mlx5_ib_vm_ops;
1655
1656 mutex_lock(&ctx->vma_private_list_mutex);
1657 list_add(&vma_prv->list, vma_head);
1658 mutex_unlock(&ctx->vma_private_list_mutex);
1659
1660 return 0;
1661 }
1662
1663 static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1664 {
1665 int ret;
1666 struct vm_area_struct *vma;
1667 struct mlx5_ib_vma_private_data *vma_private, *n;
1668 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1669 struct task_struct *owning_process = NULL;
1670 struct mm_struct *owning_mm = NULL;
1671
1672 owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1673 if (!owning_process)
1674 return;
1675
1676 owning_mm = get_task_mm(owning_process);
1677 if (!owning_mm) {
1678 pr_info("no mm, disassociate ucontext is pending task termination\n");
1679 while (1) {
1680 put_task_struct(owning_process);
1681 usleep_range(1000, 2000);
1682 owning_process = get_pid_task(ibcontext->tgid,
1683 PIDTYPE_PID);
1684 if (!owning_process ||
1685 owning_process->state == TASK_DEAD) {
1686 pr_info("disassociate ucontext done, task was terminated\n");
1687 /* in case task was dead need to release the
1688 * task struct.
1689 */
1690 if (owning_process)
1691 put_task_struct(owning_process);
1692 return;
1693 }
1694 }
1695 }
1696
1697 /* need to protect from a race on closing the vma as part of
1698 * mlx5_ib_vma_close.
1699 */
1700 down_write(&owning_mm->mmap_sem);
1701 mutex_lock(&context->vma_private_list_mutex);
1702 list_for_each_entry_safe(vma_private, n, &context->vma_private_list,
1703 list) {
1704 vma = vma_private->vma;
1705 ret = zap_vma_ptes(vma, vma->vm_start,
1706 PAGE_SIZE);
1707 WARN_ONCE(ret, "%s: zap_vma_ptes failed", __func__);
1708 /* context going to be destroyed, should
1709 * not access ops any more.
1710 */
1711 vma->vm_flags &= ~(VM_SHARED | VM_MAYSHARE);
1712 vma->vm_ops = NULL;
1713 list_del(&vma_private->list);
1714 kfree(vma_private);
1715 }
1716 mutex_unlock(&context->vma_private_list_mutex);
1717 up_write(&owning_mm->mmap_sem);
1718 mmput(owning_mm);
1719 put_task_struct(owning_process);
1720 }
1721
1722 static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd)
1723 {
1724 switch (cmd) {
1725 case MLX5_IB_MMAP_WC_PAGE:
1726 return "WC";
1727 case MLX5_IB_MMAP_REGULAR_PAGE:
1728 return "best effort WC";
1729 case MLX5_IB_MMAP_NC_PAGE:
1730 return "NC";
1731 default:
1732 return NULL;
1733 }
1734 }
1735
1736 static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd,
1737 struct vm_area_struct *vma,
1738 struct mlx5_ib_ucontext *context)
1739 {
1740 struct mlx5_bfreg_info *bfregi = &context->bfregi;
1741 int err;
1742 unsigned long idx;
1743 phys_addr_t pfn, pa;
1744 pgprot_t prot;
1745 int uars_per_page;
1746
1747 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1748 return -EINVAL;
1749
1750 uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k);
1751 idx = get_index(vma->vm_pgoff);
1752 if (idx % uars_per_page ||
1753 idx * uars_per_page >= bfregi->num_sys_pages) {
1754 mlx5_ib_warn(dev, "invalid uar index %lu\n", idx);
1755 return -EINVAL;
1756 }
1757
1758 switch (cmd) {
1759 case MLX5_IB_MMAP_WC_PAGE:
1760 /* Some architectures don't support WC memory */
1761 #if defined(CONFIG_X86)
1762 if (!pat_enabled())
1763 return -EPERM;
1764 #elif !(defined(CONFIG_PPC) || (defined(CONFIG_ARM) && defined(CONFIG_MMU)))
1765 return -EPERM;
1766 #endif
1767 /* fall through */
1768 case MLX5_IB_MMAP_REGULAR_PAGE:
1769 /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */
1770 prot = pgprot_writecombine(vma->vm_page_prot);
1771 break;
1772 case MLX5_IB_MMAP_NC_PAGE:
1773 prot = pgprot_noncached(vma->vm_page_prot);
1774 break;
1775 default:
1776 return -EINVAL;
1777 }
1778
1779 pfn = uar_index2pfn(dev, bfregi, idx);
1780 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn);
1781
1782 vma->vm_page_prot = prot;
1783 err = io_remap_pfn_range(vma, vma->vm_start, pfn,
1784 PAGE_SIZE, vma->vm_page_prot);
1785 if (err) {
1786 mlx5_ib_err(dev, "io_remap_pfn_range failed with error=%d, vm_start=0x%lx, pfn=%pa, mmap_cmd=%s\n",
1787 err, vma->vm_start, &pfn, mmap_cmd2str(cmd));
1788 return -EAGAIN;
1789 }
1790
1791 pa = pfn << PAGE_SHIFT;
1792 mlx5_ib_dbg(dev, "mapped %s at 0x%lx, PA %pa\n", mmap_cmd2str(cmd),
1793 vma->vm_start, &pa);
1794
1795 return mlx5_ib_set_vma_data(vma, context);
1796 }
1797
1798 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
1799 {
1800 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1801 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
1802 unsigned long command;
1803 phys_addr_t pfn;
1804
1805 command = get_command(vma->vm_pgoff);
1806 switch (command) {
1807 case MLX5_IB_MMAP_WC_PAGE:
1808 case MLX5_IB_MMAP_NC_PAGE:
1809 case MLX5_IB_MMAP_REGULAR_PAGE:
1810 return uar_mmap(dev, command, vma, context);
1811
1812 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
1813 return -ENOSYS;
1814
1815 case MLX5_IB_MMAP_CORE_CLOCK:
1816 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1817 return -EINVAL;
1818
1819 if (vma->vm_flags & VM_WRITE)
1820 return -EPERM;
1821
1822 /* Don't expose to user-space information it shouldn't have */
1823 if (PAGE_SIZE > 4096)
1824 return -EOPNOTSUPP;
1825
1826 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1827 pfn = (dev->mdev->iseg_base +
1828 offsetof(struct mlx5_init_seg, internal_timer_h)) >>
1829 PAGE_SHIFT;
1830 if (io_remap_pfn_range(vma, vma->vm_start, pfn,
1831 PAGE_SIZE, vma->vm_page_prot))
1832 return -EAGAIN;
1833
1834 mlx5_ib_dbg(dev, "mapped internal timer at 0x%lx, PA 0x%llx\n",
1835 vma->vm_start,
1836 (unsigned long long)pfn << PAGE_SHIFT);
1837 break;
1838
1839 default:
1840 return -EINVAL;
1841 }
1842
1843 return 0;
1844 }
1845
1846 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
1847 struct ib_ucontext *context,
1848 struct ib_udata *udata)
1849 {
1850 struct mlx5_ib_alloc_pd_resp resp;
1851 struct mlx5_ib_pd *pd;
1852 int err;
1853
1854 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
1855 if (!pd)
1856 return ERR_PTR(-ENOMEM);
1857
1858 err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn);
1859 if (err) {
1860 kfree(pd);
1861 return ERR_PTR(err);
1862 }
1863
1864 if (context) {
1865 resp.pdn = pd->pdn;
1866 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
1867 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn);
1868 kfree(pd);
1869 return ERR_PTR(-EFAULT);
1870 }
1871 }
1872
1873 return &pd->ibpd;
1874 }
1875
1876 static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
1877 {
1878 struct mlx5_ib_dev *mdev = to_mdev(pd->device);
1879 struct mlx5_ib_pd *mpd = to_mpd(pd);
1880
1881 mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn);
1882 kfree(mpd);
1883
1884 return 0;
1885 }
1886
1887 enum {
1888 MATCH_CRITERIA_ENABLE_OUTER_BIT,
1889 MATCH_CRITERIA_ENABLE_MISC_BIT,
1890 MATCH_CRITERIA_ENABLE_INNER_BIT
1891 };
1892
1893 #define HEADER_IS_ZERO(match_criteria, headers) \
1894 !(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \
1895 0, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \
1896
1897 static u8 get_match_criteria_enable(u32 *match_criteria)
1898 {
1899 u8 match_criteria_enable;
1900
1901 match_criteria_enable =
1902 (!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
1903 MATCH_CRITERIA_ENABLE_OUTER_BIT;
1904 match_criteria_enable |=
1905 (!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
1906 MATCH_CRITERIA_ENABLE_MISC_BIT;
1907 match_criteria_enable |=
1908 (!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
1909 MATCH_CRITERIA_ENABLE_INNER_BIT;
1910
1911 return match_criteria_enable;
1912 }
1913
1914 static void set_proto(void *outer_c, void *outer_v, u8 mask, u8 val)
1915 {
1916 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask);
1917 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val);
1918 }
1919
1920 static void set_flow_label(void *misc_c, void *misc_v, u8 mask, u8 val,
1921 bool inner)
1922 {
1923 if (inner) {
1924 MLX5_SET(fte_match_set_misc,
1925 misc_c, inner_ipv6_flow_label, mask);
1926 MLX5_SET(fte_match_set_misc,
1927 misc_v, inner_ipv6_flow_label, val);
1928 } else {
1929 MLX5_SET(fte_match_set_misc,
1930 misc_c, outer_ipv6_flow_label, mask);
1931 MLX5_SET(fte_match_set_misc,
1932 misc_v, outer_ipv6_flow_label, val);
1933 }
1934 }
1935
1936 static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
1937 {
1938 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask);
1939 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val);
1940 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2);
1941 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2);
1942 }
1943
1944 #define LAST_ETH_FIELD vlan_tag
1945 #define LAST_IB_FIELD sl
1946 #define LAST_IPV4_FIELD tos
1947 #define LAST_IPV6_FIELD traffic_class
1948 #define LAST_TCP_UDP_FIELD src_port
1949 #define LAST_TUNNEL_FIELD tunnel_id
1950 #define LAST_FLOW_TAG_FIELD tag_id
1951 #define LAST_DROP_FIELD size
1952
1953 /* Field is the last supported field */
1954 #define FIELDS_NOT_SUPPORTED(filter, field)\
1955 memchr_inv((void *)&filter.field +\
1956 sizeof(filter.field), 0,\
1957 sizeof(filter) -\
1958 offsetof(typeof(filter), field) -\
1959 sizeof(filter.field))
1960
1961 #define IPV4_VERSION 4
1962 #define IPV6_VERSION 6
1963 static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c,
1964 u32 *match_v, const union ib_flow_spec *ib_spec,
1965 u32 *tag_id, bool *is_drop)
1966 {
1967 void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
1968 misc_parameters);
1969 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
1970 misc_parameters);
1971 void *headers_c;
1972 void *headers_v;
1973 int match_ipv;
1974
1975 if (ib_spec->type & IB_FLOW_SPEC_INNER) {
1976 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
1977 inner_headers);
1978 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
1979 inner_headers);
1980 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
1981 ft_field_support.inner_ip_version);
1982 } else {
1983 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
1984 outer_headers);
1985 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
1986 outer_headers);
1987 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
1988 ft_field_support.outer_ip_version);
1989 }
1990
1991 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
1992 case IB_FLOW_SPEC_ETH:
1993 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1994 return -EOPNOTSUPP;
1995
1996 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1997 dmac_47_16),
1998 ib_spec->eth.mask.dst_mac);
1999 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2000 dmac_47_16),
2001 ib_spec->eth.val.dst_mac);
2002
2003 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2004 smac_47_16),
2005 ib_spec->eth.mask.src_mac);
2006 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2007 smac_47_16),
2008 ib_spec->eth.val.src_mac);
2009
2010 if (ib_spec->eth.mask.vlan_tag) {
2011 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2012 cvlan_tag, 1);
2013 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2014 cvlan_tag, 1);
2015
2016 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2017 first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
2018 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2019 first_vid, ntohs(ib_spec->eth.val.vlan_tag));
2020
2021 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2022 first_cfi,
2023 ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
2024 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2025 first_cfi,
2026 ntohs(ib_spec->eth.val.vlan_tag) >> 12);
2027
2028 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2029 first_prio,
2030 ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
2031 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2032 first_prio,
2033 ntohs(ib_spec->eth.val.vlan_tag) >> 13);
2034 }
2035 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2036 ethertype, ntohs(ib_spec->eth.mask.ether_type));
2037 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2038 ethertype, ntohs(ib_spec->eth.val.ether_type));
2039 break;
2040 case IB_FLOW_SPEC_IPV4:
2041 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
2042 return -EOPNOTSUPP;
2043
2044 if (match_ipv) {
2045 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2046 ip_version, 0xf);
2047 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2048 ip_version, IPV4_VERSION);
2049 } else {
2050 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2051 ethertype, 0xffff);
2052 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2053 ethertype, ETH_P_IP);
2054 }
2055
2056 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2057 src_ipv4_src_ipv6.ipv4_layout.ipv4),
2058 &ib_spec->ipv4.mask.src_ip,
2059 sizeof(ib_spec->ipv4.mask.src_ip));
2060 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2061 src_ipv4_src_ipv6.ipv4_layout.ipv4),
2062 &ib_spec->ipv4.val.src_ip,
2063 sizeof(ib_spec->ipv4.val.src_ip));
2064 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2065 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2066 &ib_spec->ipv4.mask.dst_ip,
2067 sizeof(ib_spec->ipv4.mask.dst_ip));
2068 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2069 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2070 &ib_spec->ipv4.val.dst_ip,
2071 sizeof(ib_spec->ipv4.val.dst_ip));
2072
2073 set_tos(headers_c, headers_v,
2074 ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos);
2075
2076 set_proto(headers_c, headers_v,
2077 ib_spec->ipv4.mask.proto, ib_spec->ipv4.val.proto);
2078 break;
2079 case IB_FLOW_SPEC_IPV6:
2080 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD))
2081 return -EOPNOTSUPP;
2082
2083 if (match_ipv) {
2084 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2085 ip_version, 0xf);
2086 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2087 ip_version, IPV6_VERSION);
2088 } else {
2089 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2090 ethertype, 0xffff);
2091 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2092 ethertype, ETH_P_IPV6);
2093 }
2094
2095 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2096 src_ipv4_src_ipv6.ipv6_layout.ipv6),
2097 &ib_spec->ipv6.mask.src_ip,
2098 sizeof(ib_spec->ipv6.mask.src_ip));
2099 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2100 src_ipv4_src_ipv6.ipv6_layout.ipv6),
2101 &ib_spec->ipv6.val.src_ip,
2102 sizeof(ib_spec->ipv6.val.src_ip));
2103 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2104 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2105 &ib_spec->ipv6.mask.dst_ip,
2106 sizeof(ib_spec->ipv6.mask.dst_ip));
2107 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2108 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2109 &ib_spec->ipv6.val.dst_ip,
2110 sizeof(ib_spec->ipv6.val.dst_ip));
2111
2112 set_tos(headers_c, headers_v,
2113 ib_spec->ipv6.mask.traffic_class,
2114 ib_spec->ipv6.val.traffic_class);
2115
2116 set_proto(headers_c, headers_v,
2117 ib_spec->ipv6.mask.next_hdr,
2118 ib_spec->ipv6.val.next_hdr);
2119
2120 set_flow_label(misc_params_c, misc_params_v,
2121 ntohl(ib_spec->ipv6.mask.flow_label),
2122 ntohl(ib_spec->ipv6.val.flow_label),
2123 ib_spec->type & IB_FLOW_SPEC_INNER);
2124
2125 break;
2126 case IB_FLOW_SPEC_TCP:
2127 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
2128 LAST_TCP_UDP_FIELD))
2129 return -EOPNOTSUPP;
2130
2131 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2132 0xff);
2133 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2134 IPPROTO_TCP);
2135
2136 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport,
2137 ntohs(ib_spec->tcp_udp.mask.src_port));
2138 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport,
2139 ntohs(ib_spec->tcp_udp.val.src_port));
2140
2141 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport,
2142 ntohs(ib_spec->tcp_udp.mask.dst_port));
2143 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
2144 ntohs(ib_spec->tcp_udp.val.dst_port));
2145 break;
2146 case IB_FLOW_SPEC_UDP:
2147 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
2148 LAST_TCP_UDP_FIELD))
2149 return -EOPNOTSUPP;
2150
2151 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2152 0xff);
2153 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2154 IPPROTO_UDP);
2155
2156 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport,
2157 ntohs(ib_spec->tcp_udp.mask.src_port));
2158 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport,
2159 ntohs(ib_spec->tcp_udp.val.src_port));
2160
2161 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport,
2162 ntohs(ib_spec->tcp_udp.mask.dst_port));
2163 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
2164 ntohs(ib_spec->tcp_udp.val.dst_port));
2165 break;
2166 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2167 if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask,
2168 LAST_TUNNEL_FIELD))
2169 return -EOPNOTSUPP;
2170
2171 MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni,
2172 ntohl(ib_spec->tunnel.mask.tunnel_id));
2173 MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni,
2174 ntohl(ib_spec->tunnel.val.tunnel_id));
2175 break;
2176 case IB_FLOW_SPEC_ACTION_TAG:
2177 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag,
2178 LAST_FLOW_TAG_FIELD))
2179 return -EOPNOTSUPP;
2180 if (ib_spec->flow_tag.tag_id >= BIT(24))
2181 return -EINVAL;
2182
2183 *tag_id = ib_spec->flow_tag.tag_id;
2184 break;
2185 case IB_FLOW_SPEC_ACTION_DROP:
2186 if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
2187 LAST_DROP_FIELD))
2188 return -EOPNOTSUPP;
2189 *is_drop = true;
2190 break;
2191 default:
2192 return -EINVAL;
2193 }
2194
2195 return 0;
2196 }
2197
2198 /* If a flow could catch both multicast and unicast packets,
2199 * it won't fall into the multicast flow steering table and this rule
2200 * could steal other multicast packets.
2201 */
2202 static bool flow_is_multicast_only(const struct ib_flow_attr *ib_attr)
2203 {
2204 union ib_flow_spec *flow_spec;
2205
2206 if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
2207 ib_attr->num_of_specs < 1)
2208 return false;
2209
2210 flow_spec = (union ib_flow_spec *)(ib_attr + 1);
2211 if (flow_spec->type == IB_FLOW_SPEC_IPV4) {
2212 struct ib_flow_spec_ipv4 *ipv4_spec;
2213
2214 ipv4_spec = (struct ib_flow_spec_ipv4 *)flow_spec;
2215 if (ipv4_is_multicast(ipv4_spec->val.dst_ip))
2216 return true;
2217
2218 return false;
2219 }
2220
2221 if (flow_spec->type == IB_FLOW_SPEC_ETH) {
2222 struct ib_flow_spec_eth *eth_spec;
2223
2224 eth_spec = (struct ib_flow_spec_eth *)flow_spec;
2225 return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
2226 is_multicast_ether_addr(eth_spec->val.dst_mac);
2227 }
2228
2229 return false;
2230 }
2231
2232 static bool is_valid_ethertype(struct mlx5_core_dev *mdev,
2233 const struct ib_flow_attr *flow_attr,
2234 bool check_inner)
2235 {
2236 union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
2237 int match_ipv = check_inner ?
2238 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2239 ft_field_support.inner_ip_version) :
2240 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2241 ft_field_support.outer_ip_version);
2242 int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0;
2243 bool ipv4_spec_valid, ipv6_spec_valid;
2244 unsigned int ip_spec_type = 0;
2245 bool has_ethertype = false;
2246 unsigned int spec_index;
2247 bool mask_valid = true;
2248 u16 eth_type = 0;
2249 bool type_valid;
2250
2251 /* Validate that ethertype is correct */
2252 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
2253 if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) &&
2254 ib_spec->eth.mask.ether_type) {
2255 mask_valid = (ib_spec->eth.mask.ether_type ==
2256 htons(0xffff));
2257 has_ethertype = true;
2258 eth_type = ntohs(ib_spec->eth.val.ether_type);
2259 } else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) ||
2260 (ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) {
2261 ip_spec_type = ib_spec->type;
2262 }
2263 ib_spec = (void *)ib_spec + ib_spec->size;
2264 }
2265
2266 type_valid = (!has_ethertype) || (!ip_spec_type);
2267 if (!type_valid && mask_valid) {
2268 ipv4_spec_valid = (eth_type == ETH_P_IP) &&
2269 (ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit));
2270 ipv6_spec_valid = (eth_type == ETH_P_IPV6) &&
2271 (ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit));
2272
2273 type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) ||
2274 (((eth_type == ETH_P_MPLS_UC) ||
2275 (eth_type == ETH_P_MPLS_MC)) && match_ipv);
2276 }
2277
2278 return type_valid;
2279 }
2280
2281 static bool is_valid_attr(struct mlx5_core_dev *mdev,
2282 const struct ib_flow_attr *flow_attr)
2283 {
2284 return is_valid_ethertype(mdev, flow_attr, false) &&
2285 is_valid_ethertype(mdev, flow_attr, true);
2286 }
2287
2288 static void put_flow_table(struct mlx5_ib_dev *dev,
2289 struct mlx5_ib_flow_prio *prio, bool ft_added)
2290 {
2291 prio->refcount -= !!ft_added;
2292 if (!prio->refcount) {
2293 mlx5_destroy_flow_table(prio->flow_table);
2294 prio->flow_table = NULL;
2295 }
2296 }
2297
2298 static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
2299 {
2300 struct mlx5_ib_dev *dev = to_mdev(flow_id->qp->device);
2301 struct mlx5_ib_flow_handler *handler = container_of(flow_id,
2302 struct mlx5_ib_flow_handler,
2303 ibflow);
2304 struct mlx5_ib_flow_handler *iter, *tmp;
2305
2306 mutex_lock(&dev->flow_db.lock);
2307
2308 list_for_each_entry_safe(iter, tmp, &handler->list, list) {
2309 mlx5_del_flow_rules(iter->rule);
2310 put_flow_table(dev, iter->prio, true);
2311 list_del(&iter->list);
2312 kfree(iter);
2313 }
2314
2315 mlx5_del_flow_rules(handler->rule);
2316 put_flow_table(dev, handler->prio, true);
2317 mutex_unlock(&dev->flow_db.lock);
2318
2319 kfree(handler);
2320
2321 return 0;
2322 }
2323
2324 static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
2325 {
2326 priority *= 2;
2327 if (!dont_trap)
2328 priority++;
2329 return priority;
2330 }
2331
2332 enum flow_table_type {
2333 MLX5_IB_FT_RX,
2334 MLX5_IB_FT_TX
2335 };
2336
2337 #define MLX5_FS_MAX_TYPES 6
2338 #define MLX5_FS_MAX_ENTRIES BIT(16)
2339 static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
2340 struct ib_flow_attr *flow_attr,
2341 enum flow_table_type ft_type)
2342 {
2343 bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
2344 struct mlx5_flow_namespace *ns = NULL;
2345 struct mlx5_ib_flow_prio *prio;
2346 struct mlx5_flow_table *ft;
2347 int max_table_size;
2348 int num_entries;
2349 int num_groups;
2350 int priority;
2351 int err = 0;
2352
2353 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
2354 log_max_ft_size));
2355 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
2356 if (flow_is_multicast_only(flow_attr) &&
2357 !dont_trap)
2358 priority = MLX5_IB_FLOW_MCAST_PRIO;
2359 else
2360 priority = ib_prio_to_core_prio(flow_attr->priority,
2361 dont_trap);
2362 ns = mlx5_get_flow_namespace(dev->mdev,
2363 MLX5_FLOW_NAMESPACE_BYPASS);
2364 num_entries = MLX5_FS_MAX_ENTRIES;
2365 num_groups = MLX5_FS_MAX_TYPES;
2366 prio = &dev->flow_db.prios[priority];
2367 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
2368 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
2369 ns = mlx5_get_flow_namespace(dev->mdev,
2370 MLX5_FLOW_NAMESPACE_LEFTOVERS);
2371 build_leftovers_ft_param(&priority,
2372 &num_entries,
2373 &num_groups);
2374 prio = &dev->flow_db.prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
2375 } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
2376 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
2377 allow_sniffer_and_nic_rx_shared_tir))
2378 return ERR_PTR(-ENOTSUPP);
2379
2380 ns = mlx5_get_flow_namespace(dev->mdev, ft_type == MLX5_IB_FT_RX ?
2381 MLX5_FLOW_NAMESPACE_SNIFFER_RX :
2382 MLX5_FLOW_NAMESPACE_SNIFFER_TX);
2383
2384 prio = &dev->flow_db.sniffer[ft_type];
2385 priority = 0;
2386 num_entries = 1;
2387 num_groups = 1;
2388 }
2389
2390 if (!ns)
2391 return ERR_PTR(-ENOTSUPP);
2392
2393 if (num_entries > max_table_size)
2394 return ERR_PTR(-ENOMEM);
2395
2396 ft = prio->flow_table;
2397 if (!ft) {
2398 ft = mlx5_create_auto_grouped_flow_table(ns, priority,
2399 num_entries,
2400 num_groups,
2401 0, 0);
2402
2403 if (!IS_ERR(ft)) {
2404 prio->refcount = 0;
2405 prio->flow_table = ft;
2406 } else {
2407 err = PTR_ERR(ft);
2408 }
2409 }
2410
2411 return err ? ERR_PTR(err) : prio;
2412 }
2413
2414 static void set_underlay_qp(struct mlx5_ib_dev *dev,
2415 struct mlx5_flow_spec *spec,
2416 u32 underlay_qpn)
2417 {
2418 void *misc_params_c = MLX5_ADDR_OF(fte_match_param,
2419 spec->match_criteria,
2420 misc_parameters);
2421 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
2422 misc_parameters);
2423
2424 if (underlay_qpn &&
2425 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
2426 ft_field_support.bth_dst_qp)) {
2427 MLX5_SET(fte_match_set_misc,
2428 misc_params_v, bth_dst_qp, underlay_qpn);
2429 MLX5_SET(fte_match_set_misc,
2430 misc_params_c, bth_dst_qp, 0xffffff);
2431 }
2432 }
2433
2434 static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
2435 struct mlx5_ib_flow_prio *ft_prio,
2436 const struct ib_flow_attr *flow_attr,
2437 struct mlx5_flow_destination *dst,
2438 u32 underlay_qpn)
2439 {
2440 struct mlx5_flow_table *ft = ft_prio->flow_table;
2441 struct mlx5_ib_flow_handler *handler;
2442 struct mlx5_flow_act flow_act = {0};
2443 struct mlx5_flow_spec *spec;
2444 struct mlx5_flow_destination *rule_dst = dst;
2445 const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
2446 unsigned int spec_index;
2447 u32 flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
2448 bool is_drop = false;
2449 int err = 0;
2450 int dest_num = 1;
2451
2452 if (!is_valid_attr(dev->mdev, flow_attr))
2453 return ERR_PTR(-EINVAL);
2454
2455 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
2456 handler = kzalloc(sizeof(*handler), GFP_KERNEL);
2457 if (!handler || !spec) {
2458 err = -ENOMEM;
2459 goto free;
2460 }
2461
2462 INIT_LIST_HEAD(&handler->list);
2463
2464 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
2465 err = parse_flow_attr(dev->mdev, spec->match_criteria,
2466 spec->match_value,
2467 ib_flow, &flow_tag, &is_drop);
2468 if (err < 0)
2469 goto free;
2470
2471 ib_flow += ((union ib_flow_spec *)ib_flow)->size;
2472 }
2473
2474 if (!flow_is_multicast_only(flow_attr))
2475 set_underlay_qp(dev, spec, underlay_qpn);
2476
2477 spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
2478 if (is_drop) {
2479 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
2480 rule_dst = NULL;
2481 dest_num = 0;
2482 } else {
2483 flow_act.action = dst ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST :
2484 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
2485 }
2486
2487 if (flow_tag != MLX5_FS_DEFAULT_FLOW_TAG &&
2488 (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
2489 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
2490 mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n",
2491 flow_tag, flow_attr->type);
2492 err = -EINVAL;
2493 goto free;
2494 }
2495 flow_act.flow_tag = flow_tag;
2496 handler->rule = mlx5_add_flow_rules(ft, spec,
2497 &flow_act,
2498 rule_dst, dest_num);
2499
2500 if (IS_ERR(handler->rule)) {
2501 err = PTR_ERR(handler->rule);
2502 goto free;
2503 }
2504
2505 ft_prio->refcount++;
2506 handler->prio = ft_prio;
2507
2508 ft_prio->flow_table = ft;
2509 free:
2510 if (err)
2511 kfree(handler);
2512 kvfree(spec);
2513 return err ? ERR_PTR(err) : handler;
2514 }
2515
2516 static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
2517 struct mlx5_ib_flow_prio *ft_prio,
2518 const struct ib_flow_attr *flow_attr,
2519 struct mlx5_flow_destination *dst)
2520 {
2521 return _create_flow_rule(dev, ft_prio, flow_attr, dst, 0);
2522 }
2523
2524 static struct mlx5_ib_flow_handler *create_dont_trap_rule(struct mlx5_ib_dev *dev,
2525 struct mlx5_ib_flow_prio *ft_prio,
2526 struct ib_flow_attr *flow_attr,
2527 struct mlx5_flow_destination *dst)
2528 {
2529 struct mlx5_ib_flow_handler *handler_dst = NULL;
2530 struct mlx5_ib_flow_handler *handler = NULL;
2531
2532 handler = create_flow_rule(dev, ft_prio, flow_attr, NULL);
2533 if (!IS_ERR(handler)) {
2534 handler_dst = create_flow_rule(dev, ft_prio,
2535 flow_attr, dst);
2536 if (IS_ERR(handler_dst)) {
2537 mlx5_del_flow_rules(handler->rule);
2538 ft_prio->refcount--;
2539 kfree(handler);
2540 handler = handler_dst;
2541 } else {
2542 list_add(&handler_dst->list, &handler->list);
2543 }
2544 }
2545
2546 return handler;
2547 }
2548 enum {
2549 LEFTOVERS_MC,
2550 LEFTOVERS_UC,
2551 };
2552
2553 static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
2554 struct mlx5_ib_flow_prio *ft_prio,
2555 struct ib_flow_attr *flow_attr,
2556 struct mlx5_flow_destination *dst)
2557 {
2558 struct mlx5_ib_flow_handler *handler_ucast = NULL;
2559 struct mlx5_ib_flow_handler *handler = NULL;
2560
2561 static struct {
2562 struct ib_flow_attr flow_attr;
2563 struct ib_flow_spec_eth eth_flow;
2564 } leftovers_specs[] = {
2565 [LEFTOVERS_MC] = {
2566 .flow_attr = {
2567 .num_of_specs = 1,
2568 .size = sizeof(leftovers_specs[0])
2569 },
2570 .eth_flow = {
2571 .type = IB_FLOW_SPEC_ETH,
2572 .size = sizeof(struct ib_flow_spec_eth),
2573 .mask = {.dst_mac = {0x1} },
2574 .val = {.dst_mac = {0x1} }
2575 }
2576 },
2577 [LEFTOVERS_UC] = {
2578 .flow_attr = {
2579 .num_of_specs = 1,
2580 .size = sizeof(leftovers_specs[0])
2581 },
2582 .eth_flow = {
2583 .type = IB_FLOW_SPEC_ETH,
2584 .size = sizeof(struct ib_flow_spec_eth),
2585 .mask = {.dst_mac = {0x1} },
2586 .val = {.dst_mac = {} }
2587 }
2588 }
2589 };
2590
2591 handler = create_flow_rule(dev, ft_prio,
2592 &leftovers_specs[LEFTOVERS_MC].flow_attr,
2593 dst);
2594 if (!IS_ERR(handler) &&
2595 flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
2596 handler_ucast = create_flow_rule(dev, ft_prio,
2597 &leftovers_specs[LEFTOVERS_UC].flow_attr,
2598 dst);
2599 if (IS_ERR(handler_ucast)) {
2600 mlx5_del_flow_rules(handler->rule);
2601 ft_prio->refcount--;
2602 kfree(handler);
2603 handler = handler_ucast;
2604 } else {
2605 list_add(&handler_ucast->list, &handler->list);
2606 }
2607 }
2608
2609 return handler;
2610 }
2611
2612 static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev,
2613 struct mlx5_ib_flow_prio *ft_rx,
2614 struct mlx5_ib_flow_prio *ft_tx,
2615 struct mlx5_flow_destination *dst)
2616 {
2617 struct mlx5_ib_flow_handler *handler_rx;
2618 struct mlx5_ib_flow_handler *handler_tx;
2619 int err;
2620 static const struct ib_flow_attr flow_attr = {
2621 .num_of_specs = 0,
2622 .size = sizeof(flow_attr)
2623 };
2624
2625 handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst);
2626 if (IS_ERR(handler_rx)) {
2627 err = PTR_ERR(handler_rx);
2628 goto err;
2629 }
2630
2631 handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst);
2632 if (IS_ERR(handler_tx)) {
2633 err = PTR_ERR(handler_tx);
2634 goto err_tx;
2635 }
2636
2637 list_add(&handler_tx->list, &handler_rx->list);
2638
2639 return handler_rx;
2640
2641 err_tx:
2642 mlx5_del_flow_rules(handler_rx->rule);
2643 ft_rx->refcount--;
2644 kfree(handler_rx);
2645 err:
2646 return ERR_PTR(err);
2647 }
2648
2649 static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
2650 struct ib_flow_attr *flow_attr,
2651 int domain)
2652 {
2653 struct mlx5_ib_dev *dev = to_mdev(qp->device);
2654 struct mlx5_ib_qp *mqp = to_mqp(qp);
2655 struct mlx5_ib_flow_handler *handler = NULL;
2656 struct mlx5_flow_destination *dst = NULL;
2657 struct mlx5_ib_flow_prio *ft_prio_tx = NULL;
2658 struct mlx5_ib_flow_prio *ft_prio;
2659 int err;
2660 int underlay_qpn;
2661
2662 if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO)
2663 return ERR_PTR(-ENOMEM);
2664
2665 if (domain != IB_FLOW_DOMAIN_USER ||
2666 flow_attr->port > MLX5_CAP_GEN(dev->mdev, num_ports) ||
2667 (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP))
2668 return ERR_PTR(-EINVAL);
2669
2670 dst = kzalloc(sizeof(*dst), GFP_KERNEL);
2671 if (!dst)
2672 return ERR_PTR(-ENOMEM);
2673
2674 mutex_lock(&dev->flow_db.lock);
2675
2676 ft_prio = get_flow_table(dev, flow_attr, MLX5_IB_FT_RX);
2677 if (IS_ERR(ft_prio)) {
2678 err = PTR_ERR(ft_prio);
2679 goto unlock;
2680 }
2681 if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
2682 ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX);
2683 if (IS_ERR(ft_prio_tx)) {
2684 err = PTR_ERR(ft_prio_tx);
2685 ft_prio_tx = NULL;
2686 goto destroy_ft;
2687 }
2688 }
2689
2690 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
2691 if (mqp->flags & MLX5_IB_QP_RSS)
2692 dst->tir_num = mqp->rss_qp.tirn;
2693 else
2694 dst->tir_num = mqp->raw_packet_qp.rq.tirn;
2695
2696 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
2697 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) {
2698 handler = create_dont_trap_rule(dev, ft_prio,
2699 flow_attr, dst);
2700 } else {
2701 underlay_qpn = (mqp->flags & MLX5_IB_QP_UNDERLAY) ?
2702 mqp->underlay_qpn : 0;
2703 handler = _create_flow_rule(dev, ft_prio, flow_attr,
2704 dst, underlay_qpn);
2705 }
2706 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
2707 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
2708 handler = create_leftovers_rule(dev, ft_prio, flow_attr,
2709 dst);
2710 } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
2711 handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst);
2712 } else {
2713 err = -EINVAL;
2714 goto destroy_ft;
2715 }
2716
2717 if (IS_ERR(handler)) {
2718 err = PTR_ERR(handler);
2719 handler = NULL;
2720 goto destroy_ft;
2721 }
2722
2723 mutex_unlock(&dev->flow_db.lock);
2724 kfree(dst);
2725
2726 return &handler->ibflow;
2727
2728 destroy_ft:
2729 put_flow_table(dev, ft_prio, false);
2730 if (ft_prio_tx)
2731 put_flow_table(dev, ft_prio_tx, false);
2732 unlock:
2733 mutex_unlock(&dev->flow_db.lock);
2734 kfree(dst);
2735 kfree(handler);
2736 return ERR_PTR(err);
2737 }
2738
2739 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2740 {
2741 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2742 struct mlx5_ib_qp *mqp = to_mqp(ibqp);
2743 int err;
2744
2745 if (mqp->flags & MLX5_IB_QP_UNDERLAY) {
2746 mlx5_ib_dbg(dev, "Attaching a multi cast group to underlay QP is not supported\n");
2747 return -EOPNOTSUPP;
2748 }
2749
2750 err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num);
2751 if (err)
2752 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
2753 ibqp->qp_num, gid->raw);
2754
2755 return err;
2756 }
2757
2758 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2759 {
2760 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2761 int err;
2762
2763 err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num);
2764 if (err)
2765 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
2766 ibqp->qp_num, gid->raw);
2767
2768 return err;
2769 }
2770
2771 static int init_node_data(struct mlx5_ib_dev *dev)
2772 {
2773 int err;
2774
2775 err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc);
2776 if (err)
2777 return err;
2778
2779 dev->mdev->rev_id = dev->mdev->pdev->revision;
2780
2781 return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid);
2782 }
2783
2784 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
2785 char *buf)
2786 {
2787 struct mlx5_ib_dev *dev =
2788 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
2789
2790 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages);
2791 }
2792
2793 static ssize_t show_reg_pages(struct device *device,
2794 struct device_attribute *attr, char *buf)
2795 {
2796 struct mlx5_ib_dev *dev =
2797 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
2798
2799 return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages));
2800 }
2801
2802 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2803 char *buf)
2804 {
2805 struct mlx5_ib_dev *dev =
2806 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
2807 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
2808 }
2809
2810 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2811 char *buf)
2812 {
2813 struct mlx5_ib_dev *dev =
2814 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
2815 return sprintf(buf, "%x\n", dev->mdev->rev_id);
2816 }
2817
2818 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2819 char *buf)
2820 {
2821 struct mlx5_ib_dev *dev =
2822 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
2823 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
2824 dev->mdev->board_id);
2825 }
2826
2827 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2828 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2829 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2830 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
2831 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
2832
2833 static struct device_attribute *mlx5_class_attributes[] = {
2834 &dev_attr_hw_rev,
2835 &dev_attr_hca_type,
2836 &dev_attr_board_id,
2837 &dev_attr_fw_pages,
2838 &dev_attr_reg_pages,
2839 };
2840
2841 static void pkey_change_handler(struct work_struct *work)
2842 {
2843 struct mlx5_ib_port_resources *ports =
2844 container_of(work, struct mlx5_ib_port_resources,
2845 pkey_change_work);
2846
2847 mutex_lock(&ports->devr->mutex);
2848 mlx5_ib_gsi_pkey_change(ports->gsi);
2849 mutex_unlock(&ports->devr->mutex);
2850 }
2851
2852 static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev)
2853 {
2854 struct mlx5_ib_qp *mqp;
2855 struct mlx5_ib_cq *send_mcq, *recv_mcq;
2856 struct mlx5_core_cq *mcq;
2857 struct list_head cq_armed_list;
2858 unsigned long flags_qp;
2859 unsigned long flags_cq;
2860 unsigned long flags;
2861
2862 INIT_LIST_HEAD(&cq_armed_list);
2863
2864 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
2865 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
2866 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
2867 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
2868 if (mqp->sq.tail != mqp->sq.head) {
2869 send_mcq = to_mcq(mqp->ibqp.send_cq);
2870 spin_lock_irqsave(&send_mcq->lock, flags_cq);
2871 if (send_mcq->mcq.comp &&
2872 mqp->ibqp.send_cq->comp_handler) {
2873 if (!send_mcq->mcq.reset_notify_added) {
2874 send_mcq->mcq.reset_notify_added = 1;
2875 list_add_tail(&send_mcq->mcq.reset_notify,
2876 &cq_armed_list);
2877 }
2878 }
2879 spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
2880 }
2881 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
2882 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
2883 /* no handling is needed for SRQ */
2884 if (!mqp->ibqp.srq) {
2885 if (mqp->rq.tail != mqp->rq.head) {
2886 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
2887 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
2888 if (recv_mcq->mcq.comp &&
2889 mqp->ibqp.recv_cq->comp_handler) {
2890 if (!recv_mcq->mcq.reset_notify_added) {
2891 recv_mcq->mcq.reset_notify_added = 1;
2892 list_add_tail(&recv_mcq->mcq.reset_notify,
2893 &cq_armed_list);
2894 }
2895 }
2896 spin_unlock_irqrestore(&recv_mcq->lock,
2897 flags_cq);
2898 }
2899 }
2900 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
2901 }
2902 /*At that point all inflight post send were put to be executed as of we
2903 * lock/unlock above locks Now need to arm all involved CQs.
2904 */
2905 list_for_each_entry(mcq, &cq_armed_list, reset_notify) {
2906 mcq->comp(mcq);
2907 }
2908 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
2909 }
2910
2911 static void delay_drop_handler(struct work_struct *work)
2912 {
2913 int err;
2914 struct mlx5_ib_delay_drop *delay_drop =
2915 container_of(work, struct mlx5_ib_delay_drop,
2916 delay_drop_work);
2917
2918 atomic_inc(&delay_drop->events_cnt);
2919
2920 mutex_lock(&delay_drop->lock);
2921 err = mlx5_core_set_delay_drop(delay_drop->dev->mdev,
2922 delay_drop->timeout);
2923 if (err) {
2924 mlx5_ib_warn(delay_drop->dev, "Failed to set delay drop, timeout=%u\n",
2925 delay_drop->timeout);
2926 delay_drop->activate = false;
2927 }
2928 mutex_unlock(&delay_drop->lock);
2929 }
2930
2931 static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
2932 enum mlx5_dev_event event, unsigned long param)
2933 {
2934 struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context;
2935 struct ib_event ibev;
2936 bool fatal = false;
2937 u8 port = 0;
2938
2939 switch (event) {
2940 case MLX5_DEV_EVENT_SYS_ERROR:
2941 ibev.event = IB_EVENT_DEVICE_FATAL;
2942 mlx5_ib_handle_internal_error(ibdev);
2943 fatal = true;
2944 break;
2945
2946 case MLX5_DEV_EVENT_PORT_UP:
2947 case MLX5_DEV_EVENT_PORT_DOWN:
2948 case MLX5_DEV_EVENT_PORT_INITIALIZED:
2949 port = (u8)param;
2950
2951 /* In RoCE, port up/down events are handled in
2952 * mlx5_netdev_event().
2953 */
2954 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) ==
2955 IB_LINK_LAYER_ETHERNET)
2956 return;
2957
2958 ibev.event = (event == MLX5_DEV_EVENT_PORT_UP) ?
2959 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2960 break;
2961
2962 case MLX5_DEV_EVENT_LID_CHANGE:
2963 ibev.event = IB_EVENT_LID_CHANGE;
2964 port = (u8)param;
2965 break;
2966
2967 case MLX5_DEV_EVENT_PKEY_CHANGE:
2968 ibev.event = IB_EVENT_PKEY_CHANGE;
2969 port = (u8)param;
2970
2971 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work);
2972 break;
2973
2974 case MLX5_DEV_EVENT_GUID_CHANGE:
2975 ibev.event = IB_EVENT_GID_CHANGE;
2976 port = (u8)param;
2977 break;
2978
2979 case MLX5_DEV_EVENT_CLIENT_REREG:
2980 ibev.event = IB_EVENT_CLIENT_REREGISTER;
2981 port = (u8)param;
2982 break;
2983 case MLX5_DEV_EVENT_DELAY_DROP_TIMEOUT:
2984 schedule_work(&ibdev->delay_drop.delay_drop_work);
2985 goto out;
2986 default:
2987 goto out;
2988 }
2989
2990 ibev.device = &ibdev->ib_dev;
2991 ibev.element.port_num = port;
2992
2993 if (port < 1 || port > ibdev->num_ports) {
2994 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
2995 goto out;
2996 }
2997
2998 if (ibdev->ib_active)
2999 ib_dispatch_event(&ibev);
3000
3001 if (fatal)
3002 ibdev->ib_active = false;
3003
3004 out:
3005 return;
3006 }
3007
3008 static int set_has_smi_cap(struct mlx5_ib_dev *dev)
3009 {
3010 struct mlx5_hca_vport_context vport_ctx;
3011 int err;
3012 int port;
3013
3014 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) {
3015 dev->mdev->port_caps[port - 1].has_smi = false;
3016 if (MLX5_CAP_GEN(dev->mdev, port_type) ==
3017 MLX5_CAP_PORT_TYPE_IB) {
3018 if (MLX5_CAP_GEN(dev->mdev, ib_virt)) {
3019 err = mlx5_query_hca_vport_context(dev->mdev, 0,
3020 port, 0,
3021 &vport_ctx);
3022 if (err) {
3023 mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n",
3024 port, err);
3025 return err;
3026 }
3027 dev->mdev->port_caps[port - 1].has_smi =
3028 vport_ctx.has_smi;
3029 } else {
3030 dev->mdev->port_caps[port - 1].has_smi = true;
3031 }
3032 }
3033 }
3034 return 0;
3035 }
3036
3037 static void get_ext_port_caps(struct mlx5_ib_dev *dev)
3038 {
3039 int port;
3040
3041 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++)
3042 mlx5_query_ext_port_caps(dev, port);
3043 }
3044
3045 static int get_port_caps(struct mlx5_ib_dev *dev)
3046 {
3047 struct ib_device_attr *dprops = NULL;
3048 struct ib_port_attr *pprops = NULL;
3049 int err = -ENOMEM;
3050 int port;
3051 struct ib_udata uhw = {.inlen = 0, .outlen = 0};
3052
3053 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
3054 if (!pprops)
3055 goto out;
3056
3057 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
3058 if (!dprops)
3059 goto out;
3060
3061 err = set_has_smi_cap(dev);
3062 if (err)
3063 goto out;
3064
3065 err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw);
3066 if (err) {
3067 mlx5_ib_warn(dev, "query_device failed %d\n", err);
3068 goto out;
3069 }
3070
3071 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) {
3072 memset(pprops, 0, sizeof(*pprops));
3073 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
3074 if (err) {
3075 mlx5_ib_warn(dev, "query_port %d failed %d\n",
3076 port, err);
3077 break;
3078 }
3079 dev->mdev->port_caps[port - 1].pkey_table_len =
3080 dprops->max_pkeys;
3081 dev->mdev->port_caps[port - 1].gid_table_len =
3082 pprops->gid_tbl_len;
3083 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
3084 dprops->max_pkeys, pprops->gid_tbl_len);
3085 }
3086
3087 out:
3088 kfree(pprops);
3089 kfree(dprops);
3090
3091 return err;
3092 }
3093
3094 static void destroy_umrc_res(struct mlx5_ib_dev *dev)
3095 {
3096 int err;
3097
3098 err = mlx5_mr_cache_cleanup(dev);
3099 if (err)
3100 mlx5_ib_warn(dev, "mr cache cleanup failed\n");
3101
3102 mlx5_ib_destroy_qp(dev->umrc.qp);
3103 ib_free_cq(dev->umrc.cq);
3104 ib_dealloc_pd(dev->umrc.pd);
3105 }
3106
3107 enum {
3108 MAX_UMR_WR = 128,
3109 };
3110
3111 static int create_umr_res(struct mlx5_ib_dev *dev)
3112 {
3113 struct ib_qp_init_attr *init_attr = NULL;
3114 struct ib_qp_attr *attr = NULL;
3115 struct ib_pd *pd;
3116 struct ib_cq *cq;
3117 struct ib_qp *qp;
3118 int ret;
3119
3120 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
3121 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
3122 if (!attr || !init_attr) {
3123 ret = -ENOMEM;
3124 goto error_0;
3125 }
3126
3127 pd = ib_alloc_pd(&dev->ib_dev, 0);
3128 if (IS_ERR(pd)) {
3129 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
3130 ret = PTR_ERR(pd);
3131 goto error_0;
3132 }
3133
3134 cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ);
3135 if (IS_ERR(cq)) {
3136 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
3137 ret = PTR_ERR(cq);
3138 goto error_2;
3139 }
3140
3141 init_attr->send_cq = cq;
3142 init_attr->recv_cq = cq;
3143 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
3144 init_attr->cap.max_send_wr = MAX_UMR_WR;
3145 init_attr->cap.max_send_sge = 1;
3146 init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
3147 init_attr->port_num = 1;
3148 qp = mlx5_ib_create_qp(pd, init_attr, NULL);
3149 if (IS_ERR(qp)) {
3150 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
3151 ret = PTR_ERR(qp);
3152 goto error_3;
3153 }
3154 qp->device = &dev->ib_dev;
3155 qp->real_qp = qp;
3156 qp->uobject = NULL;
3157 qp->qp_type = MLX5_IB_QPT_REG_UMR;
3158 qp->send_cq = init_attr->send_cq;
3159 qp->recv_cq = init_attr->recv_cq;
3160
3161 attr->qp_state = IB_QPS_INIT;
3162 attr->port_num = 1;
3163 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
3164 IB_QP_PORT, NULL);
3165 if (ret) {
3166 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
3167 goto error_4;
3168 }
3169
3170 memset(attr, 0, sizeof(*attr));
3171 attr->qp_state = IB_QPS_RTR;
3172 attr->path_mtu = IB_MTU_256;
3173
3174 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
3175 if (ret) {
3176 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
3177 goto error_4;
3178 }
3179
3180 memset(attr, 0, sizeof(*attr));
3181 attr->qp_state = IB_QPS_RTS;
3182 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
3183 if (ret) {
3184 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
3185 goto error_4;
3186 }
3187
3188 dev->umrc.qp = qp;
3189 dev->umrc.cq = cq;
3190 dev->umrc.pd = pd;
3191
3192 sema_init(&dev->umrc.sem, MAX_UMR_WR);
3193 ret = mlx5_mr_cache_init(dev);
3194 if (ret) {
3195 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
3196 goto error_4;
3197 }
3198
3199 kfree(attr);
3200 kfree(init_attr);
3201
3202 return 0;
3203
3204 error_4:
3205 mlx5_ib_destroy_qp(qp);
3206
3207 error_3:
3208 ib_free_cq(cq);
3209
3210 error_2:
3211 ib_dealloc_pd(pd);
3212
3213 error_0:
3214 kfree(attr);
3215 kfree(init_attr);
3216 return ret;
3217 }
3218
3219 static u8 mlx5_get_umr_fence(u8 umr_fence_cap)
3220 {
3221 switch (umr_fence_cap) {
3222 case MLX5_CAP_UMR_FENCE_NONE:
3223 return MLX5_FENCE_MODE_NONE;
3224 case MLX5_CAP_UMR_FENCE_SMALL:
3225 return MLX5_FENCE_MODE_INITIATOR_SMALL;
3226 default:
3227 return MLX5_FENCE_MODE_STRONG_ORDERING;
3228 }
3229 }
3230
3231 static int create_dev_resources(struct mlx5_ib_resources *devr)
3232 {
3233 struct ib_srq_init_attr attr;
3234 struct mlx5_ib_dev *dev;
3235 struct ib_cq_init_attr cq_attr = {.cqe = 1};
3236 int port;
3237 int ret = 0;
3238
3239 dev = container_of(devr, struct mlx5_ib_dev, devr);
3240
3241 mutex_init(&devr->mutex);
3242
3243 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
3244 if (IS_ERR(devr->p0)) {
3245 ret = PTR_ERR(devr->p0);
3246 goto error0;
3247 }
3248 devr->p0->device = &dev->ib_dev;
3249 devr->p0->uobject = NULL;
3250 atomic_set(&devr->p0->usecnt, 0);
3251
3252 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, &cq_attr, NULL, NULL);
3253 if (IS_ERR(devr->c0)) {
3254 ret = PTR_ERR(devr->c0);
3255 goto error1;
3256 }
3257 devr->c0->device = &dev->ib_dev;
3258 devr->c0->uobject = NULL;
3259 devr->c0->comp_handler = NULL;
3260 devr->c0->event_handler = NULL;
3261 devr->c0->cq_context = NULL;
3262 atomic_set(&devr->c0->usecnt, 0);
3263
3264 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
3265 if (IS_ERR(devr->x0)) {
3266 ret = PTR_ERR(devr->x0);
3267 goto error2;
3268 }
3269 devr->x0->device = &dev->ib_dev;
3270 devr->x0->inode = NULL;
3271 atomic_set(&devr->x0->usecnt, 0);
3272 mutex_init(&devr->x0->tgt_qp_mutex);
3273 INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
3274
3275 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
3276 if (IS_ERR(devr->x1)) {
3277 ret = PTR_ERR(devr->x1);
3278 goto error3;
3279 }
3280 devr->x1->device = &dev->ib_dev;
3281 devr->x1->inode = NULL;
3282 atomic_set(&devr->x1->usecnt, 0);
3283 mutex_init(&devr->x1->tgt_qp_mutex);
3284 INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
3285
3286 memset(&attr, 0, sizeof(attr));
3287 attr.attr.max_sge = 1;
3288 attr.attr.max_wr = 1;
3289 attr.srq_type = IB_SRQT_XRC;
3290 attr.ext.cq = devr->c0;
3291 attr.ext.xrc.xrcd = devr->x0;
3292
3293 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
3294 if (IS_ERR(devr->s0)) {
3295 ret = PTR_ERR(devr->s0);
3296 goto error4;
3297 }
3298 devr->s0->device = &dev->ib_dev;
3299 devr->s0->pd = devr->p0;
3300 devr->s0->uobject = NULL;
3301 devr->s0->event_handler = NULL;
3302 devr->s0->srq_context = NULL;
3303 devr->s0->srq_type = IB_SRQT_XRC;
3304 devr->s0->ext.xrc.xrcd = devr->x0;
3305 devr->s0->ext.cq = devr->c0;
3306 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
3307 atomic_inc(&devr->s0->ext.cq->usecnt);
3308 atomic_inc(&devr->p0->usecnt);
3309 atomic_set(&devr->s0->usecnt, 0);
3310
3311 memset(&attr, 0, sizeof(attr));
3312 attr.attr.max_sge = 1;
3313 attr.attr.max_wr = 1;
3314 attr.srq_type = IB_SRQT_BASIC;
3315 devr->s1 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
3316 if (IS_ERR(devr->s1)) {
3317 ret = PTR_ERR(devr->s1);
3318 goto error5;
3319 }
3320 devr->s1->device = &dev->ib_dev;
3321 devr->s1->pd = devr->p0;
3322 devr->s1->uobject = NULL;
3323 devr->s1->event_handler = NULL;
3324 devr->s1->srq_context = NULL;
3325 devr->s1->srq_type = IB_SRQT_BASIC;
3326 devr->s1->ext.cq = devr->c0;
3327 atomic_inc(&devr->p0->usecnt);
3328 atomic_set(&devr->s1->usecnt, 0);
3329
3330 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) {
3331 INIT_WORK(&devr->ports[port].pkey_change_work,
3332 pkey_change_handler);
3333 devr->ports[port].devr = devr;
3334 }
3335
3336 return 0;
3337
3338 error5:
3339 mlx5_ib_destroy_srq(devr->s0);
3340 error4:
3341 mlx5_ib_dealloc_xrcd(devr->x1);
3342 error3:
3343 mlx5_ib_dealloc_xrcd(devr->x0);
3344 error2:
3345 mlx5_ib_destroy_cq(devr->c0);
3346 error1:
3347 mlx5_ib_dealloc_pd(devr->p0);
3348 error0:
3349 return ret;
3350 }
3351
3352 static void destroy_dev_resources(struct mlx5_ib_resources *devr)
3353 {
3354 struct mlx5_ib_dev *dev =
3355 container_of(devr, struct mlx5_ib_dev, devr);
3356 int port;
3357
3358 mlx5_ib_destroy_srq(devr->s1);
3359 mlx5_ib_destroy_srq(devr->s0);
3360 mlx5_ib_dealloc_xrcd(devr->x0);
3361 mlx5_ib_dealloc_xrcd(devr->x1);
3362 mlx5_ib_destroy_cq(devr->c0);
3363 mlx5_ib_dealloc_pd(devr->p0);
3364
3365 /* Make sure no change P_Key work items are still executing */
3366 for (port = 0; port < dev->num_ports; ++port)
3367 cancel_work_sync(&devr->ports[port].pkey_change_work);
3368 }
3369
3370 static u32 get_core_cap_flags(struct ib_device *ibdev)
3371 {
3372 struct mlx5_ib_dev *dev = to_mdev(ibdev);
3373 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1);
3374 u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type);
3375 u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version);
3376 u32 ret = 0;
3377
3378 if (ll == IB_LINK_LAYER_INFINIBAND)
3379 return RDMA_CORE_PORT_IBA_IB;
3380
3381 ret = RDMA_CORE_PORT_RAW_PACKET;
3382
3383 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP))
3384 return ret;
3385
3386 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP))
3387 return ret;
3388
3389 if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP)
3390 ret |= RDMA_CORE_PORT_IBA_ROCE;
3391
3392 if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP)
3393 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
3394
3395 return ret;
3396 }
3397
3398 static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
3399 struct ib_port_immutable *immutable)
3400 {
3401 struct ib_port_attr attr;
3402 struct mlx5_ib_dev *dev = to_mdev(ibdev);
3403 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num);
3404 int err;
3405
3406 immutable->core_cap_flags = get_core_cap_flags(ibdev);
3407
3408 err = ib_query_port(ibdev, port_num, &attr);
3409 if (err)
3410 return err;
3411
3412 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3413 immutable->gid_tbl_len = attr.gid_tbl_len;
3414 immutable->core_cap_flags = get_core_cap_flags(ibdev);
3415 if ((ll == IB_LINK_LAYER_INFINIBAND) || MLX5_CAP_GEN(dev->mdev, roce))
3416 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
3417
3418 return 0;
3419 }
3420
3421 static void get_dev_fw_str(struct ib_device *ibdev, char *str)
3422 {
3423 struct mlx5_ib_dev *dev =
3424 container_of(ibdev, struct mlx5_ib_dev, ib_dev);
3425 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%04d",
3426 fw_rev_maj(dev->mdev), fw_rev_min(dev->mdev),
3427 fw_rev_sub(dev->mdev));
3428 }
3429
3430 static int mlx5_eth_lag_init(struct mlx5_ib_dev *dev)
3431 {
3432 struct mlx5_core_dev *mdev = dev->mdev;
3433 struct mlx5_flow_namespace *ns = mlx5_get_flow_namespace(mdev,
3434 MLX5_FLOW_NAMESPACE_LAG);
3435 struct mlx5_flow_table *ft;
3436 int err;
3437
3438 if (!ns || !mlx5_lag_is_active(mdev))
3439 return 0;
3440
3441 err = mlx5_cmd_create_vport_lag(mdev);
3442 if (err)
3443 return err;
3444
3445 ft = mlx5_create_lag_demux_flow_table(ns, 0, 0);
3446 if (IS_ERR(ft)) {
3447 err = PTR_ERR(ft);
3448 goto err_destroy_vport_lag;
3449 }
3450
3451 dev->flow_db.lag_demux_ft = ft;
3452 return 0;
3453
3454 err_destroy_vport_lag:
3455 mlx5_cmd_destroy_vport_lag(mdev);
3456 return err;
3457 }
3458
3459 static void mlx5_eth_lag_cleanup(struct mlx5_ib_dev *dev)
3460 {
3461 struct mlx5_core_dev *mdev = dev->mdev;
3462
3463 if (dev->flow_db.lag_demux_ft) {
3464 mlx5_destroy_flow_table(dev->flow_db.lag_demux_ft);
3465 dev->flow_db.lag_demux_ft = NULL;
3466
3467 mlx5_cmd_destroy_vport_lag(mdev);
3468 }
3469 }
3470
3471 static int mlx5_add_netdev_notifier(struct mlx5_ib_dev *dev)
3472 {
3473 int err;
3474
3475 dev->roce.nb.notifier_call = mlx5_netdev_event;
3476 err = register_netdevice_notifier(&dev->roce.nb);
3477 if (err) {
3478 dev->roce.nb.notifier_call = NULL;
3479 return err;
3480 }
3481
3482 return 0;
3483 }
3484
3485 static void mlx5_remove_netdev_notifier(struct mlx5_ib_dev *dev)
3486 {
3487 if (dev->roce.nb.notifier_call) {
3488 unregister_netdevice_notifier(&dev->roce.nb);
3489 dev->roce.nb.notifier_call = NULL;
3490 }
3491 }
3492
3493 static int mlx5_enable_eth(struct mlx5_ib_dev *dev)
3494 {
3495 int err;
3496
3497 err = mlx5_add_netdev_notifier(dev);
3498 if (err)
3499 return err;
3500
3501 if (MLX5_CAP_GEN(dev->mdev, roce)) {
3502 err = mlx5_nic_vport_enable_roce(dev->mdev);
3503 if (err)
3504 goto err_unregister_netdevice_notifier;
3505 }
3506
3507 err = mlx5_eth_lag_init(dev);
3508 if (err)
3509 goto err_disable_roce;
3510
3511 return 0;
3512
3513 err_disable_roce:
3514 if (MLX5_CAP_GEN(dev->mdev, roce))
3515 mlx5_nic_vport_disable_roce(dev->mdev);
3516
3517 err_unregister_netdevice_notifier:
3518 mlx5_remove_netdev_notifier(dev);
3519 return err;
3520 }
3521
3522 static void mlx5_disable_eth(struct mlx5_ib_dev *dev)
3523 {
3524 mlx5_eth_lag_cleanup(dev);
3525 if (MLX5_CAP_GEN(dev->mdev, roce))
3526 mlx5_nic_vport_disable_roce(dev->mdev);
3527 }
3528
3529 struct mlx5_ib_counter {
3530 const char *name;
3531 size_t offset;
3532 };
3533
3534 #define INIT_Q_COUNTER(_name) \
3535 { .name = #_name, .offset = MLX5_BYTE_OFF(query_q_counter_out, _name)}
3536
3537 static const struct mlx5_ib_counter basic_q_cnts[] = {
3538 INIT_Q_COUNTER(rx_write_requests),
3539 INIT_Q_COUNTER(rx_read_requests),
3540 INIT_Q_COUNTER(rx_atomic_requests),
3541 INIT_Q_COUNTER(out_of_buffer),
3542 };
3543
3544 static const struct mlx5_ib_counter out_of_seq_q_cnts[] = {
3545 INIT_Q_COUNTER(out_of_sequence),
3546 };
3547
3548 static const struct mlx5_ib_counter retrans_q_cnts[] = {
3549 INIT_Q_COUNTER(duplicate_request),
3550 INIT_Q_COUNTER(rnr_nak_retry_err),
3551 INIT_Q_COUNTER(packet_seq_err),
3552 INIT_Q_COUNTER(implied_nak_seq_err),
3553 INIT_Q_COUNTER(local_ack_timeout_err),
3554 };
3555
3556 #define INIT_CONG_COUNTER(_name) \
3557 { .name = #_name, .offset = \
3558 MLX5_BYTE_OFF(query_cong_statistics_out, _name ## _high)}
3559
3560 static const struct mlx5_ib_counter cong_cnts[] = {
3561 INIT_CONG_COUNTER(rp_cnp_ignored),
3562 INIT_CONG_COUNTER(rp_cnp_handled),
3563 INIT_CONG_COUNTER(np_ecn_marked_roce_packets),
3564 INIT_CONG_COUNTER(np_cnp_sent),
3565 };
3566
3567 static const struct mlx5_ib_counter extended_err_cnts[] = {
3568 INIT_Q_COUNTER(resp_local_length_error),
3569 INIT_Q_COUNTER(resp_cqe_error),
3570 INIT_Q_COUNTER(req_cqe_error),
3571 INIT_Q_COUNTER(req_remote_invalid_request),
3572 INIT_Q_COUNTER(req_remote_access_errors),
3573 INIT_Q_COUNTER(resp_remote_access_errors),
3574 INIT_Q_COUNTER(resp_cqe_flush_error),
3575 INIT_Q_COUNTER(req_cqe_flush_error),
3576 };
3577
3578 static void mlx5_ib_dealloc_counters(struct mlx5_ib_dev *dev)
3579 {
3580 unsigned int i;
3581
3582 for (i = 0; i < dev->num_ports; i++) {
3583 mlx5_core_dealloc_q_counter(dev->mdev,
3584 dev->port[i].cnts.set_id);
3585 kfree(dev->port[i].cnts.names);
3586 kfree(dev->port[i].cnts.offsets);
3587 }
3588 }
3589
3590 static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev,
3591 struct mlx5_ib_counters *cnts)
3592 {
3593 u32 num_counters;
3594
3595 num_counters = ARRAY_SIZE(basic_q_cnts);
3596
3597 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt))
3598 num_counters += ARRAY_SIZE(out_of_seq_q_cnts);
3599
3600 if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters))
3601 num_counters += ARRAY_SIZE(retrans_q_cnts);
3602
3603 if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters))
3604 num_counters += ARRAY_SIZE(extended_err_cnts);
3605
3606 cnts->num_q_counters = num_counters;
3607
3608 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
3609 cnts->num_cong_counters = ARRAY_SIZE(cong_cnts);
3610 num_counters += ARRAY_SIZE(cong_cnts);
3611 }
3612
3613 cnts->names = kcalloc(num_counters, sizeof(cnts->names), GFP_KERNEL);
3614 if (!cnts->names)
3615 return -ENOMEM;
3616
3617 cnts->offsets = kcalloc(num_counters,
3618 sizeof(cnts->offsets), GFP_KERNEL);
3619 if (!cnts->offsets)
3620 goto err_names;
3621
3622 return 0;
3623
3624 err_names:
3625 kfree(cnts->names);
3626 return -ENOMEM;
3627 }
3628
3629 static void mlx5_ib_fill_counters(struct mlx5_ib_dev *dev,
3630 const char **names,
3631 size_t *offsets)
3632 {
3633 int i;
3634 int j = 0;
3635
3636 for (i = 0; i < ARRAY_SIZE(basic_q_cnts); i++, j++) {
3637 names[j] = basic_q_cnts[i].name;
3638 offsets[j] = basic_q_cnts[i].offset;
3639 }
3640
3641 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt)) {
3642 for (i = 0; i < ARRAY_SIZE(out_of_seq_q_cnts); i++, j++) {
3643 names[j] = out_of_seq_q_cnts[i].name;
3644 offsets[j] = out_of_seq_q_cnts[i].offset;
3645 }
3646 }
3647
3648 if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) {
3649 for (i = 0; i < ARRAY_SIZE(retrans_q_cnts); i++, j++) {
3650 names[j] = retrans_q_cnts[i].name;
3651 offsets[j] = retrans_q_cnts[i].offset;
3652 }
3653 }
3654
3655 if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters)) {
3656 for (i = 0; i < ARRAY_SIZE(extended_err_cnts); i++, j++) {
3657 names[j] = extended_err_cnts[i].name;
3658 offsets[j] = extended_err_cnts[i].offset;
3659 }
3660 }
3661
3662 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
3663 for (i = 0; i < ARRAY_SIZE(cong_cnts); i++, j++) {
3664 names[j] = cong_cnts[i].name;
3665 offsets[j] = cong_cnts[i].offset;
3666 }
3667 }
3668 }
3669
3670 static int mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev)
3671 {
3672 int i;
3673 int ret;
3674
3675 for (i = 0; i < dev->num_ports; i++) {
3676 struct mlx5_ib_port *port = &dev->port[i];
3677
3678 ret = mlx5_core_alloc_q_counter(dev->mdev,
3679 &port->cnts.set_id);
3680 if (ret) {
3681 mlx5_ib_warn(dev,
3682 "couldn't allocate queue counter for port %d, err %d\n",
3683 i + 1, ret);
3684 goto dealloc_counters;
3685 }
3686
3687 ret = __mlx5_ib_alloc_counters(dev, &port->cnts);
3688 if (ret)
3689 goto dealloc_counters;
3690
3691 mlx5_ib_fill_counters(dev, port->cnts.names,
3692 port->cnts.offsets);
3693 }
3694
3695 return 0;
3696
3697 dealloc_counters:
3698 while (--i >= 0)
3699 mlx5_core_dealloc_q_counter(dev->mdev,
3700 dev->port[i].cnts.set_id);
3701
3702 return ret;
3703 }
3704
3705 static struct rdma_hw_stats *mlx5_ib_alloc_hw_stats(struct ib_device *ibdev,
3706 u8 port_num)
3707 {
3708 struct mlx5_ib_dev *dev = to_mdev(ibdev);
3709 struct mlx5_ib_port *port = &dev->port[port_num - 1];
3710
3711 /* We support only per port stats */
3712 if (port_num == 0)
3713 return NULL;
3714
3715 return rdma_alloc_hw_stats_struct(port->cnts.names,
3716 port->cnts.num_q_counters +
3717 port->cnts.num_cong_counters,
3718 RDMA_HW_STATS_DEFAULT_LIFESPAN);
3719 }
3720
3721 static int mlx5_ib_query_q_counters(struct mlx5_ib_dev *dev,
3722 struct mlx5_ib_port *port,
3723 struct rdma_hw_stats *stats)
3724 {
3725 int outlen = MLX5_ST_SZ_BYTES(query_q_counter_out);
3726 void *out;
3727 __be32 val;
3728 int ret, i;
3729
3730 out = kvzalloc(outlen, GFP_KERNEL);
3731 if (!out)
3732 return -ENOMEM;
3733
3734 ret = mlx5_core_query_q_counter(dev->mdev,
3735 port->cnts.set_id, 0,
3736 out, outlen);
3737 if (ret)
3738 goto free;
3739
3740 for (i = 0; i < port->cnts.num_q_counters; i++) {
3741 val = *(__be32 *)(out + port->cnts.offsets[i]);
3742 stats->value[i] = (u64)be32_to_cpu(val);
3743 }
3744
3745 free:
3746 kvfree(out);
3747 return ret;
3748 }
3749
3750 static int mlx5_ib_get_hw_stats(struct ib_device *ibdev,
3751 struct rdma_hw_stats *stats,
3752 u8 port_num, int index)
3753 {
3754 struct mlx5_ib_dev *dev = to_mdev(ibdev);
3755 struct mlx5_ib_port *port = &dev->port[port_num - 1];
3756 int ret, num_counters;
3757
3758 if (!stats)
3759 return -EINVAL;
3760
3761 ret = mlx5_ib_query_q_counters(dev, port, stats);
3762 if (ret)
3763 return ret;
3764 num_counters = port->cnts.num_q_counters;
3765
3766 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
3767 ret = mlx5_lag_query_cong_counters(dev->mdev,
3768 stats->value +
3769 port->cnts.num_q_counters,
3770 port->cnts.num_cong_counters,
3771 port->cnts.offsets +
3772 port->cnts.num_q_counters);
3773 if (ret)
3774 return ret;
3775 num_counters += port->cnts.num_cong_counters;
3776 }
3777
3778 return num_counters;
3779 }
3780
3781 static void mlx5_ib_free_rdma_netdev(struct net_device *netdev)
3782 {
3783 return mlx5_rdma_netdev_free(netdev);
3784 }
3785
3786 static struct net_device*
3787 mlx5_ib_alloc_rdma_netdev(struct ib_device *hca,
3788 u8 port_num,
3789 enum rdma_netdev_t type,
3790 const char *name,
3791 unsigned char name_assign_type,
3792 void (*setup)(struct net_device *))
3793 {
3794 struct net_device *netdev;
3795 struct rdma_netdev *rn;
3796
3797 if (type != RDMA_NETDEV_IPOIB)
3798 return ERR_PTR(-EOPNOTSUPP);
3799
3800 netdev = mlx5_rdma_netdev_alloc(to_mdev(hca)->mdev, hca,
3801 name, setup);
3802 if (likely(!IS_ERR_OR_NULL(netdev))) {
3803 rn = netdev_priv(netdev);
3804 rn->free_rdma_netdev = mlx5_ib_free_rdma_netdev;
3805 }
3806 return netdev;
3807 }
3808
3809 static void delay_drop_debugfs_cleanup(struct mlx5_ib_dev *dev)
3810 {
3811 if (!dev->delay_drop.dbg)
3812 return;
3813 debugfs_remove_recursive(dev->delay_drop.dbg->dir_debugfs);
3814 kfree(dev->delay_drop.dbg);
3815 dev->delay_drop.dbg = NULL;
3816 }
3817
3818 static void cancel_delay_drop(struct mlx5_ib_dev *dev)
3819 {
3820 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP))
3821 return;
3822
3823 cancel_work_sync(&dev->delay_drop.delay_drop_work);
3824 delay_drop_debugfs_cleanup(dev);
3825 }
3826
3827 static ssize_t delay_drop_timeout_read(struct file *filp, char __user *buf,
3828 size_t count, loff_t *pos)
3829 {
3830 struct mlx5_ib_delay_drop *delay_drop = filp->private_data;
3831 char lbuf[20];
3832 int len;
3833
3834 len = snprintf(lbuf, sizeof(lbuf), "%u\n", delay_drop->timeout);
3835 return simple_read_from_buffer(buf, count, pos, lbuf, len);
3836 }
3837
3838 static ssize_t delay_drop_timeout_write(struct file *filp, const char __user *buf,
3839 size_t count, loff_t *pos)
3840 {
3841 struct mlx5_ib_delay_drop *delay_drop = filp->private_data;
3842 u32 timeout;
3843 u32 var;
3844
3845 if (kstrtouint_from_user(buf, count, 0, &var))
3846 return -EFAULT;
3847
3848 timeout = min_t(u32, roundup(var, 100), MLX5_MAX_DELAY_DROP_TIMEOUT_MS *
3849 1000);
3850 if (timeout != var)
3851 mlx5_ib_dbg(delay_drop->dev, "Round delay drop timeout to %u usec\n",
3852 timeout);
3853
3854 delay_drop->timeout = timeout;
3855
3856 return count;
3857 }
3858
3859 static const struct file_operations fops_delay_drop_timeout = {
3860 .owner = THIS_MODULE,
3861 .open = simple_open,
3862 .write = delay_drop_timeout_write,
3863 .read = delay_drop_timeout_read,
3864 };
3865
3866 static int delay_drop_debugfs_init(struct mlx5_ib_dev *dev)
3867 {
3868 struct mlx5_ib_dbg_delay_drop *dbg;
3869
3870 if (!mlx5_debugfs_root)
3871 return 0;
3872
3873 dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
3874 if (!dbg)
3875 return -ENOMEM;
3876
3877 dev->delay_drop.dbg = dbg;
3878
3879 dbg->dir_debugfs =
3880 debugfs_create_dir("delay_drop",
3881 dev->mdev->priv.dbg_root);
3882 if (!dbg->dir_debugfs)
3883 goto out_debugfs;
3884
3885 dbg->events_cnt_debugfs =
3886 debugfs_create_atomic_t("num_timeout_events", 0400,
3887 dbg->dir_debugfs,
3888 &dev->delay_drop.events_cnt);
3889 if (!dbg->events_cnt_debugfs)
3890 goto out_debugfs;
3891
3892 dbg->rqs_cnt_debugfs =
3893 debugfs_create_atomic_t("num_rqs", 0400,
3894 dbg->dir_debugfs,
3895 &dev->delay_drop.rqs_cnt);
3896 if (!dbg->rqs_cnt_debugfs)
3897 goto out_debugfs;
3898
3899 dbg->timeout_debugfs =
3900 debugfs_create_file("timeout", 0600,
3901 dbg->dir_debugfs,
3902 &dev->delay_drop,
3903 &fops_delay_drop_timeout);
3904 if (!dbg->timeout_debugfs)
3905 goto out_debugfs;
3906
3907 return 0;
3908
3909 out_debugfs:
3910 delay_drop_debugfs_cleanup(dev);
3911 return -ENOMEM;
3912 }
3913
3914 static void init_delay_drop(struct mlx5_ib_dev *dev)
3915 {
3916 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP))
3917 return;
3918
3919 mutex_init(&dev->delay_drop.lock);
3920 dev->delay_drop.dev = dev;
3921 dev->delay_drop.activate = false;
3922 dev->delay_drop.timeout = MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 1000;
3923 INIT_WORK(&dev->delay_drop.delay_drop_work, delay_drop_handler);
3924 atomic_set(&dev->delay_drop.rqs_cnt, 0);
3925 atomic_set(&dev->delay_drop.events_cnt, 0);
3926
3927 if (delay_drop_debugfs_init(dev))
3928 mlx5_ib_warn(dev, "Failed to init delay drop debugfs\n");
3929 }
3930
3931 static const struct cpumask *
3932 mlx5_ib_get_vector_affinity(struct ib_device *ibdev, int comp_vector)
3933 {
3934 struct mlx5_ib_dev *dev = to_mdev(ibdev);
3935
3936 return mlx5_get_vector_affinity(dev->mdev, comp_vector);
3937 }
3938
3939 static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
3940 {
3941 struct mlx5_ib_dev *dev;
3942 enum rdma_link_layer ll;
3943 int port_type_cap;
3944 const char *name;
3945 int err;
3946 int i;
3947
3948 port_type_cap = MLX5_CAP_GEN(mdev, port_type);
3949 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
3950
3951 printk_once(KERN_INFO "%s", mlx5_version);
3952
3953 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
3954 if (!dev)
3955 return NULL;
3956
3957 dev->mdev = mdev;
3958
3959 dev->port = kcalloc(MLX5_CAP_GEN(mdev, num_ports), sizeof(*dev->port),
3960 GFP_KERNEL);
3961 if (!dev->port)
3962 goto err_dealloc;
3963
3964 rwlock_init(&dev->roce.netdev_lock);
3965 err = get_port_caps(dev);
3966 if (err)
3967 goto err_free_port;
3968
3969 if (mlx5_use_mad_ifc(dev))
3970 get_ext_port_caps(dev);
3971
3972 if (!mlx5_lag_is_active(mdev))
3973 name = "mlx5_%d";
3974 else
3975 name = "mlx5_bond_%d";
3976
3977 strlcpy(dev->ib_dev.name, name, IB_DEVICE_NAME_MAX);
3978 dev->ib_dev.owner = THIS_MODULE;
3979 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
3980 dev->ib_dev.local_dma_lkey = 0 /* not supported for now */;
3981 dev->num_ports = MLX5_CAP_GEN(mdev, num_ports);
3982 dev->ib_dev.phys_port_cnt = dev->num_ports;
3983 dev->ib_dev.num_comp_vectors =
3984 dev->mdev->priv.eq_table.num_comp_vectors;
3985 dev->ib_dev.dev.parent = &mdev->pdev->dev;
3986
3987 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
3988 dev->ib_dev.uverbs_cmd_mask =
3989 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3990 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3991 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3992 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3993 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3994 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3995 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3996 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3997 (1ull << IB_USER_VERBS_CMD_REREG_MR) |
3998 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3999 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
4000 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
4001 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
4002 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
4003 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
4004 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
4005 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
4006 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
4007 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
4008 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
4009 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
4010 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
4011 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
4012 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
4013 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
4014 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
4015 dev->ib_dev.uverbs_ex_cmd_mask =
4016 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
4017 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
4018 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP) |
4019 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_QP) |
4020 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ);
4021
4022 dev->ib_dev.query_device = mlx5_ib_query_device;
4023 dev->ib_dev.query_port = mlx5_ib_query_port;
4024 dev->ib_dev.get_link_layer = mlx5_ib_port_link_layer;
4025 if (ll == IB_LINK_LAYER_ETHERNET)
4026 dev->ib_dev.get_netdev = mlx5_ib_get_netdev;
4027 dev->ib_dev.query_gid = mlx5_ib_query_gid;
4028 dev->ib_dev.add_gid = mlx5_ib_add_gid;
4029 dev->ib_dev.del_gid = mlx5_ib_del_gid;
4030 dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
4031 dev->ib_dev.modify_device = mlx5_ib_modify_device;
4032 dev->ib_dev.modify_port = mlx5_ib_modify_port;
4033 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
4034 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
4035 dev->ib_dev.mmap = mlx5_ib_mmap;
4036 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
4037 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
4038 dev->ib_dev.create_ah = mlx5_ib_create_ah;
4039 dev->ib_dev.query_ah = mlx5_ib_query_ah;
4040 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
4041 dev->ib_dev.create_srq = mlx5_ib_create_srq;
4042 dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
4043 dev->ib_dev.query_srq = mlx5_ib_query_srq;
4044 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
4045 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
4046 dev->ib_dev.create_qp = mlx5_ib_create_qp;
4047 dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
4048 dev->ib_dev.query_qp = mlx5_ib_query_qp;
4049 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
4050 dev->ib_dev.post_send = mlx5_ib_post_send;
4051 dev->ib_dev.post_recv = mlx5_ib_post_recv;
4052 dev->ib_dev.create_cq = mlx5_ib_create_cq;
4053 dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
4054 dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
4055 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
4056 dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
4057 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
4058 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
4059 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
4060 dev->ib_dev.rereg_user_mr = mlx5_ib_rereg_user_mr;
4061 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
4062 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
4063 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
4064 dev->ib_dev.process_mad = mlx5_ib_process_mad;
4065 dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
4066 dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg;
4067 dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
4068 dev->ib_dev.get_port_immutable = mlx5_port_immutable;
4069 dev->ib_dev.get_dev_fw_str = get_dev_fw_str;
4070 dev->ib_dev.get_vector_affinity = mlx5_ib_get_vector_affinity;
4071 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads))
4072 dev->ib_dev.alloc_rdma_netdev = mlx5_ib_alloc_rdma_netdev;
4073
4074 if (mlx5_core_is_pf(mdev)) {
4075 dev->ib_dev.get_vf_config = mlx5_ib_get_vf_config;
4076 dev->ib_dev.set_vf_link_state = mlx5_ib_set_vf_link_state;
4077 dev->ib_dev.get_vf_stats = mlx5_ib_get_vf_stats;
4078 dev->ib_dev.set_vf_guid = mlx5_ib_set_vf_guid;
4079 }
4080
4081 dev->ib_dev.disassociate_ucontext = mlx5_ib_disassociate_ucontext;
4082
4083 mlx5_ib_internal_fill_odp_caps(dev);
4084
4085 dev->umr_fence = mlx5_get_umr_fence(MLX5_CAP_GEN(mdev, umr_fence));
4086
4087 if (MLX5_CAP_GEN(mdev, imaicl)) {
4088 dev->ib_dev.alloc_mw = mlx5_ib_alloc_mw;
4089 dev->ib_dev.dealloc_mw = mlx5_ib_dealloc_mw;
4090 dev->ib_dev.uverbs_cmd_mask |=
4091 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
4092 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
4093 }
4094
4095 if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) {
4096 dev->ib_dev.get_hw_stats = mlx5_ib_get_hw_stats;
4097 dev->ib_dev.alloc_hw_stats = mlx5_ib_alloc_hw_stats;
4098 }
4099
4100 if (MLX5_CAP_GEN(mdev, xrc)) {
4101 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
4102 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
4103 dev->ib_dev.uverbs_cmd_mask |=
4104 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
4105 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
4106 }
4107
4108 dev->ib_dev.create_flow = mlx5_ib_create_flow;
4109 dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow;
4110 dev->ib_dev.uverbs_ex_cmd_mask |=
4111 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
4112 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
4113
4114 if (mlx5_ib_port_link_layer(&dev->ib_dev, 1) ==
4115 IB_LINK_LAYER_ETHERNET) {
4116 dev->ib_dev.create_wq = mlx5_ib_create_wq;
4117 dev->ib_dev.modify_wq = mlx5_ib_modify_wq;
4118 dev->ib_dev.destroy_wq = mlx5_ib_destroy_wq;
4119 dev->ib_dev.create_rwq_ind_table = mlx5_ib_create_rwq_ind_table;
4120 dev->ib_dev.destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table;
4121 dev->ib_dev.uverbs_ex_cmd_mask |=
4122 (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) |
4123 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) |
4124 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) |
4125 (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
4126 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
4127 }
4128 err = init_node_data(dev);
4129 if (err)
4130 goto err_free_port;
4131
4132 mutex_init(&dev->flow_db.lock);
4133 mutex_init(&dev->cap_mask_mutex);
4134 INIT_LIST_HEAD(&dev->qp_list);
4135 spin_lock_init(&dev->reset_flow_resource_lock);
4136
4137 if (ll == IB_LINK_LAYER_ETHERNET) {
4138 err = mlx5_enable_eth(dev);
4139 if (err)
4140 goto err_free_port;
4141 dev->roce.last_port_state = IB_PORT_DOWN;
4142 }
4143
4144 err = create_dev_resources(&dev->devr);
4145 if (err)
4146 goto err_disable_eth;
4147
4148 err = mlx5_ib_odp_init_one(dev);
4149 if (err)
4150 goto err_rsrc;
4151
4152 if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) {
4153 err = mlx5_ib_alloc_counters(dev);
4154 if (err)
4155 goto err_odp;
4156 }
4157
4158 err = mlx5_ib_init_cong_debugfs(dev);
4159 if (err)
4160 goto err_cnt;
4161
4162 dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev);
4163 if (IS_ERR(dev->mdev->priv.uar))
4164 goto err_cong;
4165
4166 err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false);
4167 if (err)
4168 goto err_uar_page;
4169
4170 err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true);
4171 if (err)
4172 goto err_bfreg;
4173
4174 err = ib_register_device(&dev->ib_dev, NULL);
4175 if (err)
4176 goto err_fp_bfreg;
4177
4178 err = create_umr_res(dev);
4179 if (err)
4180 goto err_dev;
4181
4182 init_delay_drop(dev);
4183
4184 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
4185 err = device_create_file(&dev->ib_dev.dev,
4186 mlx5_class_attributes[i]);
4187 if (err)
4188 goto err_delay_drop;
4189 }
4190
4191 if ((MLX5_CAP_GEN(mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) &&
4192 (MLX5_CAP_GEN(mdev, disable_local_lb_uc) ||
4193 MLX5_CAP_GEN(mdev, disable_local_lb_mc)))
4194 mutex_init(&dev->lb_mutex);
4195
4196 dev->ib_active = true;
4197
4198 return dev;
4199
4200 err_delay_drop:
4201 cancel_delay_drop(dev);
4202 destroy_umrc_res(dev);
4203
4204 err_dev:
4205 ib_unregister_device(&dev->ib_dev);
4206
4207 err_fp_bfreg:
4208 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
4209
4210 err_bfreg:
4211 mlx5_free_bfreg(dev->mdev, &dev->bfreg);
4212
4213 err_uar_page:
4214 mlx5_put_uars_page(dev->mdev, dev->mdev->priv.uar);
4215
4216 err_cong:
4217 mlx5_ib_cleanup_cong_debugfs(dev);
4218 err_cnt:
4219 if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt))
4220 mlx5_ib_dealloc_counters(dev);
4221
4222 err_odp:
4223 mlx5_ib_odp_remove_one(dev);
4224
4225 err_rsrc:
4226 destroy_dev_resources(&dev->devr);
4227
4228 err_disable_eth:
4229 if (ll == IB_LINK_LAYER_ETHERNET) {
4230 mlx5_disable_eth(dev);
4231 mlx5_remove_netdev_notifier(dev);
4232 }
4233
4234 err_free_port:
4235 kfree(dev->port);
4236
4237 err_dealloc:
4238 ib_dealloc_device((struct ib_device *)dev);
4239
4240 return NULL;
4241 }
4242
4243 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
4244 {
4245 struct mlx5_ib_dev *dev = context;
4246 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 1);
4247
4248 cancel_delay_drop(dev);
4249 mlx5_remove_netdev_notifier(dev);
4250 ib_unregister_device(&dev->ib_dev);
4251 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
4252 mlx5_free_bfreg(dev->mdev, &dev->bfreg);
4253 mlx5_put_uars_page(dev->mdev, mdev->priv.uar);
4254 mlx5_ib_cleanup_cong_debugfs(dev);
4255 if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt))
4256 mlx5_ib_dealloc_counters(dev);
4257 destroy_umrc_res(dev);
4258 mlx5_ib_odp_remove_one(dev);
4259 destroy_dev_resources(&dev->devr);
4260 if (ll == IB_LINK_LAYER_ETHERNET)
4261 mlx5_disable_eth(dev);
4262 kfree(dev->port);
4263 ib_dealloc_device(&dev->ib_dev);
4264 }
4265
4266 static struct mlx5_interface mlx5_ib_interface = {
4267 .add = mlx5_ib_add,
4268 .remove = mlx5_ib_remove,
4269 .event = mlx5_ib_event,
4270 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
4271 .pfault = mlx5_ib_pfault,
4272 #endif
4273 .protocol = MLX5_INTERFACE_PROTOCOL_IB,
4274 };
4275
4276 static int __init mlx5_ib_init(void)
4277 {
4278 int err;
4279
4280 mlx5_ib_odp_init();
4281
4282 err = mlx5_register_interface(&mlx5_ib_interface);
4283
4284 return err;
4285 }
4286
4287 static void __exit mlx5_ib_cleanup(void)
4288 {
4289 mlx5_unregister_interface(&mlx5_ib_interface);
4290 }
4291
4292 module_init(mlx5_ib_init);
4293 module_exit(mlx5_ib_cleanup);
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