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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / infiniband / hw / mlx5 / main.c
blob4236c80868200822d30cfc3d8adea4c97ce9afc2
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/mlx5/fs.h>
54 #include <linux/list.h>
55 #include <rdma/ib_smi.h>
56 #include <rdma/ib_umem.h>
57 #include <linux/in.h>
58 #include <linux/etherdevice.h>
59 #include "mlx5_ib.h"
60 #include "cmd.h"
61
62 #define DRIVER_NAME "mlx5_ib"
63 #define DRIVER_VERSION "5.0-0"
64
65 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
66 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
67 MODULE_LICENSE("Dual BSD/GPL");
68
69 static char mlx5_version[] =
70 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
71 DRIVER_VERSION "\n";
72
73 struct mlx5_ib_event_work {
74 struct work_struct work;
75 struct mlx5_core_dev *dev;
76 void *context;
77 enum mlx5_dev_event event;
78 unsigned long param;
79 };
80
81 enum {
82 MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3,
83 };
84
85 static struct workqueue_struct *mlx5_ib_event_wq;
86 static LIST_HEAD(mlx5_ib_unaffiliated_port_list);
87 static LIST_HEAD(mlx5_ib_dev_list);
88 /*
89 * This mutex should be held when accessing either of the above lists
90 */
91 static DEFINE_MUTEX(mlx5_ib_multiport_mutex);
92
93 struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi)
94 {
95 struct mlx5_ib_dev *dev;
96
97 mutex_lock(&mlx5_ib_multiport_mutex);
98 dev = mpi->ibdev;
99 mutex_unlock(&mlx5_ib_multiport_mutex);
100 return dev;
101 }
102
103 static enum rdma_link_layer
104 mlx5_port_type_cap_to_rdma_ll(int port_type_cap)
105 {
106 switch (port_type_cap) {
107 case MLX5_CAP_PORT_TYPE_IB:
108 return IB_LINK_LAYER_INFINIBAND;
109 case MLX5_CAP_PORT_TYPE_ETH:
110 return IB_LINK_LAYER_ETHERNET;
111 default:
112 return IB_LINK_LAYER_UNSPECIFIED;
113 }
114 }
115
116 static enum rdma_link_layer
117 mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num)
118 {
119 struct mlx5_ib_dev *dev = to_mdev(device);
120 int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type);
121
122 return mlx5_port_type_cap_to_rdma_ll(port_type_cap);
123 }
124
125 static int get_port_state(struct ib_device *ibdev,
126 u8 port_num,
127 enum ib_port_state *state)
128 {
129 struct ib_port_attr attr;
130 int ret;
131
132 memset(&attr, 0, sizeof(attr));
133 ret = mlx5_ib_query_port(ibdev, port_num, &attr);
134 if (!ret)
135 *state = attr.state;
136 return ret;
137 }
138
139 static int mlx5_netdev_event(struct notifier_block *this,
140 unsigned long event, void *ptr)
141 {
142 struct mlx5_roce *roce = container_of(this, struct mlx5_roce, nb);
143 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
144 u8 port_num = roce->native_port_num;
145 struct mlx5_core_dev *mdev;
146 struct mlx5_ib_dev *ibdev;
147
148 ibdev = roce->dev;
149 mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL);
150 if (!mdev)
151 return NOTIFY_DONE;
152
153 switch (event) {
154 case NETDEV_REGISTER:
155 case NETDEV_UNREGISTER:
156 write_lock(&roce->netdev_lock);
157
158 if (ndev->dev.parent == &mdev->pdev->dev)
159 roce->netdev = (event == NETDEV_UNREGISTER) ?
160 NULL : ndev;
161 write_unlock(&roce->netdev_lock);
162 break;
163
164 case NETDEV_CHANGE:
165 case NETDEV_UP:
166 case NETDEV_DOWN: {
167 struct net_device *lag_ndev = mlx5_lag_get_roce_netdev(mdev);
168 struct net_device *upper = NULL;
169
170 if (lag_ndev) {
171 upper = netdev_master_upper_dev_get(lag_ndev);
172 dev_put(lag_ndev);
173 }
174
175 if ((upper == ndev || (!upper && ndev == roce->netdev))
176 && ibdev->ib_active) {
177 struct ib_event ibev = { };
178 enum ib_port_state port_state;
179
180 if (get_port_state(&ibdev->ib_dev, port_num,
181 &port_state))
182 goto done;
183
184 if (roce->last_port_state == port_state)
185 goto done;
186
187 roce->last_port_state = port_state;
188 ibev.device = &ibdev->ib_dev;
189 if (port_state == IB_PORT_DOWN)
190 ibev.event = IB_EVENT_PORT_ERR;
191 else if (port_state == IB_PORT_ACTIVE)
192 ibev.event = IB_EVENT_PORT_ACTIVE;
193 else
194 goto done;
195
196 ibev.element.port_num = port_num;
197 ib_dispatch_event(&ibev);
198 }
199 break;
200 }
201
202 default:
203 break;
204 }
205 done:
206 mlx5_ib_put_native_port_mdev(ibdev, port_num);
207 return NOTIFY_DONE;
208 }
209
210 static struct net_device *mlx5_ib_get_netdev(struct ib_device *device,
211 u8 port_num)
212 {
213 struct mlx5_ib_dev *ibdev = to_mdev(device);
214 struct net_device *ndev;
215 struct mlx5_core_dev *mdev;
216
217 mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL);
218 if (!mdev)
219 return NULL;
220
221 ndev = mlx5_lag_get_roce_netdev(mdev);
222 if (ndev)
223 goto out;
224
225 /* Ensure ndev does not disappear before we invoke dev_hold()
226 */
227 read_lock(&ibdev->roce[port_num - 1].netdev_lock);
228 ndev = ibdev->roce[port_num - 1].netdev;
229 if (ndev)
230 dev_hold(ndev);
231 read_unlock(&ibdev->roce[port_num - 1].netdev_lock);
232
233 out:
234 mlx5_ib_put_native_port_mdev(ibdev, port_num);
235 return ndev;
236 }
237
238 struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *ibdev,
239 u8 ib_port_num,
240 u8 *native_port_num)
241 {
242 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev,
243 ib_port_num);
244 struct mlx5_core_dev *mdev = NULL;
245 struct mlx5_ib_multiport_info *mpi;
246 struct mlx5_ib_port *port;
247
248 if (native_port_num)
249 *native_port_num = 1;
250
251 if (!mlx5_core_mp_enabled(ibdev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
252 return ibdev->mdev;
253
254 port = &ibdev->port[ib_port_num - 1];
255 if (!port)
256 return NULL;
257
258 spin_lock(&port->mp.mpi_lock);
259 mpi = ibdev->port[ib_port_num - 1].mp.mpi;
260 if (mpi && !mpi->unaffiliate) {
261 mdev = mpi->mdev;
262 /* If it's the master no need to refcount, it'll exist
263 * as long as the ib_dev exists.
264 */
265 if (!mpi->is_master)
266 mpi->mdev_refcnt++;
267 }
268 spin_unlock(&port->mp.mpi_lock);
269
270 return mdev;
271 }
272
273 void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *ibdev, u8 port_num)
274 {
275 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev,
276 port_num);
277 struct mlx5_ib_multiport_info *mpi;
278 struct mlx5_ib_port *port;
279
280 if (!mlx5_core_mp_enabled(ibdev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
281 return;
282
283 port = &ibdev->port[port_num - 1];
284
285 spin_lock(&port->mp.mpi_lock);
286 mpi = ibdev->port[port_num - 1].mp.mpi;
287 if (mpi->is_master)
288 goto out;
289
290 mpi->mdev_refcnt--;
291 if (mpi->unaffiliate)
292 complete(&mpi->unref_comp);
293 out:
294 spin_unlock(&port->mp.mpi_lock);
295 }
296
297 static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed,
298 u8 *active_width)
299 {
300 switch (eth_proto_oper) {
301 case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII):
302 case MLX5E_PROT_MASK(MLX5E_1000BASE_KX):
303 case MLX5E_PROT_MASK(MLX5E_100BASE_TX):
304 case MLX5E_PROT_MASK(MLX5E_1000BASE_T):
305 *active_width = IB_WIDTH_1X;
306 *active_speed = IB_SPEED_SDR;
307 break;
308 case MLX5E_PROT_MASK(MLX5E_10GBASE_T):
309 case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4):
310 case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4):
311 case MLX5E_PROT_MASK(MLX5E_10GBASE_KR):
312 case MLX5E_PROT_MASK(MLX5E_10GBASE_CR):
313 case MLX5E_PROT_MASK(MLX5E_10GBASE_SR):
314 case MLX5E_PROT_MASK(MLX5E_10GBASE_ER):
315 *active_width = IB_WIDTH_1X;
316 *active_speed = IB_SPEED_QDR;
317 break;
318 case MLX5E_PROT_MASK(MLX5E_25GBASE_CR):
319 case MLX5E_PROT_MASK(MLX5E_25GBASE_KR):
320 case MLX5E_PROT_MASK(MLX5E_25GBASE_SR):
321 *active_width = IB_WIDTH_1X;
322 *active_speed = IB_SPEED_EDR;
323 break;
324 case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4):
325 case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4):
326 case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4):
327 case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4):
328 *active_width = IB_WIDTH_4X;
329 *active_speed = IB_SPEED_QDR;
330 break;
331 case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2):
332 case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2):
333 case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2):
334 *active_width = IB_WIDTH_1X;
335 *active_speed = IB_SPEED_HDR;
336 break;
337 case MLX5E_PROT_MASK(MLX5E_56GBASE_R4):
338 *active_width = IB_WIDTH_4X;
339 *active_speed = IB_SPEED_FDR;
340 break;
341 case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4):
342 case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4):
343 case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4):
344 case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4):
345 *active_width = IB_WIDTH_4X;
346 *active_speed = IB_SPEED_EDR;
347 break;
348 default:
349 return -EINVAL;
350 }
351
352 return 0;
353 }
354
355 static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
356 struct ib_port_attr *props)
357 {
358 struct mlx5_ib_dev *dev = to_mdev(device);
359 struct mlx5_core_dev *mdev;
360 struct net_device *ndev, *upper;
361 enum ib_mtu ndev_ib_mtu;
362 bool put_mdev = true;
363 u16 qkey_viol_cntr;
364 u32 eth_prot_oper;
365 u8 mdev_port_num;
366 int err;
367
368 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
369 if (!mdev) {
370 /* This means the port isn't affiliated yet. Get the
371 * info for the master port instead.
372 */
373 put_mdev = false;
374 mdev = dev->mdev;
375 mdev_port_num = 1;
376 port_num = 1;
377 }
378
379 /* Possible bad flows are checked before filling out props so in case
380 * of an error it will still be zeroed out.
381 */
382 err = mlx5_query_port_eth_proto_oper(mdev, &eth_prot_oper,
383 mdev_port_num);
384 if (err)
385 goto out;
386
387 translate_eth_proto_oper(eth_prot_oper, &props->active_speed,
388 &props->active_width);
389
390 props->port_cap_flags |= IB_PORT_CM_SUP;
391 props->port_cap_flags |= IB_PORT_IP_BASED_GIDS;
392
393 props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev,
394 roce_address_table_size);
395 props->max_mtu = IB_MTU_4096;
396 props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg);
397 props->pkey_tbl_len = 1;
398 props->state = IB_PORT_DOWN;
399 props->phys_state = 3;
400
401 mlx5_query_nic_vport_qkey_viol_cntr(mdev, &qkey_viol_cntr);
402 props->qkey_viol_cntr = qkey_viol_cntr;
403
404 /* If this is a stub query for an unaffiliated port stop here */
405 if (!put_mdev)
406 goto out;
407
408 ndev = mlx5_ib_get_netdev(device, port_num);
409 if (!ndev)
410 goto out;
411
412 if (mlx5_lag_is_active(dev->mdev)) {
413 rcu_read_lock();
414 upper = netdev_master_upper_dev_get_rcu(ndev);
415 if (upper) {
416 dev_put(ndev);
417 ndev = upper;
418 dev_hold(ndev);
419 }
420 rcu_read_unlock();
421 }
422
423 if (netif_running(ndev) && netif_carrier_ok(ndev)) {
424 props->state = IB_PORT_ACTIVE;
425 props->phys_state = 5;
426 }
427
428 ndev_ib_mtu = iboe_get_mtu(ndev->mtu);
429
430 dev_put(ndev);
431
432 props->active_mtu = min(props->max_mtu, ndev_ib_mtu);
433 out:
434 if (put_mdev)
435 mlx5_ib_put_native_port_mdev(dev, port_num);
436 return err;
437 }
438
439 static int set_roce_addr(struct mlx5_ib_dev *dev, u8 port_num,
440 unsigned int index, const union ib_gid *gid,
441 const struct ib_gid_attr *attr)
442 {
443 enum ib_gid_type gid_type = IB_GID_TYPE_IB;
444 u8 roce_version = 0;
445 u8 roce_l3_type = 0;
446 bool vlan = false;
447 u8 mac[ETH_ALEN];
448 u16 vlan_id = 0;
449
450 if (gid) {
451 gid_type = attr->gid_type;
452 ether_addr_copy(mac, attr->ndev->dev_addr);
453
454 if (is_vlan_dev(attr->ndev)) {
455 vlan = true;
456 vlan_id = vlan_dev_vlan_id(attr->ndev);
457 }
458 }
459
460 switch (gid_type) {
461 case IB_GID_TYPE_IB:
462 roce_version = MLX5_ROCE_VERSION_1;
463 break;
464 case IB_GID_TYPE_ROCE_UDP_ENCAP:
465 roce_version = MLX5_ROCE_VERSION_2;
466 if (ipv6_addr_v4mapped((void *)gid))
467 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV4;
468 else
469 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV6;
470 break;
471
472 default:
473 mlx5_ib_warn(dev, "Unexpected GID type %u\n", gid_type);
474 }
475
476 return mlx5_core_roce_gid_set(dev->mdev, index, roce_version,
477 roce_l3_type, gid->raw, mac, vlan,
478 vlan_id, port_num);
479 }
480
481 static int mlx5_ib_add_gid(struct ib_device *device, u8 port_num,
482 unsigned int index, const union ib_gid *gid,
483 const struct ib_gid_attr *attr,
484 __always_unused void **context)
485 {
486 return set_roce_addr(to_mdev(device), port_num, index, gid, attr);
487 }
488
489 static int mlx5_ib_del_gid(struct ib_device *device, u8 port_num,
490 unsigned int index, __always_unused void **context)
491 {
492 return set_roce_addr(to_mdev(device), port_num, index, NULL, NULL);
493 }
494
495 __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num,
496 int index)
497 {
498 struct ib_gid_attr attr;
499 union ib_gid gid;
500
501 if (ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr))
502 return 0;
503
504 if (!attr.ndev)
505 return 0;
506
507 dev_put(attr.ndev);
508
509 if (attr.gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
510 return 0;
511
512 return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port));
513 }
514
515 int mlx5_get_roce_gid_type(struct mlx5_ib_dev *dev, u8 port_num,
516 int index, enum ib_gid_type *gid_type)
517 {
518 struct ib_gid_attr attr;
519 union ib_gid gid;
520 int ret;
521
522 ret = ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr);
523 if (ret)
524 return ret;
525
526 if (!attr.ndev)
527 return -ENODEV;
528
529 dev_put(attr.ndev);
530
531 *gid_type = attr.gid_type;
532
533 return 0;
534 }
535
536 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
537 {
538 if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB)
539 return !MLX5_CAP_GEN(dev->mdev, ib_virt);
540 return 0;
541 }
542
543 enum {
544 MLX5_VPORT_ACCESS_METHOD_MAD,
545 MLX5_VPORT_ACCESS_METHOD_HCA,
546 MLX5_VPORT_ACCESS_METHOD_NIC,
547 };
548
549 static int mlx5_get_vport_access_method(struct ib_device *ibdev)
550 {
551 if (mlx5_use_mad_ifc(to_mdev(ibdev)))
552 return MLX5_VPORT_ACCESS_METHOD_MAD;
553
554 if (mlx5_ib_port_link_layer(ibdev, 1) ==
555 IB_LINK_LAYER_ETHERNET)
556 return MLX5_VPORT_ACCESS_METHOD_NIC;
557
558 return MLX5_VPORT_ACCESS_METHOD_HCA;
559 }
560
561 static void get_atomic_caps(struct mlx5_ib_dev *dev,
562 u8 atomic_size_qp,
563 struct ib_device_attr *props)
564 {
565 u8 tmp;
566 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
567 u8 atomic_req_8B_endianness_mode =
568 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianness_mode);
569
570 /* Check if HW supports 8 bytes standard atomic operations and capable
571 * of host endianness respond
572 */
573 tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD;
574 if (((atomic_operations & tmp) == tmp) &&
575 (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) &&
576 (atomic_req_8B_endianness_mode)) {
577 props->atomic_cap = IB_ATOMIC_HCA;
578 } else {
579 props->atomic_cap = IB_ATOMIC_NONE;
580 }
581 }
582
583 static void get_atomic_caps_qp(struct mlx5_ib_dev *dev,
584 struct ib_device_attr *props)
585 {
586 u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
587
588 get_atomic_caps(dev, atomic_size_qp, props);
589 }
590
591 static void get_atomic_caps_dc(struct mlx5_ib_dev *dev,
592 struct ib_device_attr *props)
593 {
594 u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_dc);
595
596 get_atomic_caps(dev, atomic_size_qp, props);
597 }
598
599 bool mlx5_ib_dc_atomic_is_supported(struct mlx5_ib_dev *dev)
600 {
601 struct ib_device_attr props = {};
602
603 get_atomic_caps_dc(dev, &props);
604 return (props.atomic_cap == IB_ATOMIC_HCA) ? true : false;
605 }
606 static int mlx5_query_system_image_guid(struct ib_device *ibdev,
607 __be64 *sys_image_guid)
608 {
609 struct mlx5_ib_dev *dev = to_mdev(ibdev);
610 struct mlx5_core_dev *mdev = dev->mdev;
611 u64 tmp;
612 int err;
613
614 switch (mlx5_get_vport_access_method(ibdev)) {
615 case MLX5_VPORT_ACCESS_METHOD_MAD:
616 return mlx5_query_mad_ifc_system_image_guid(ibdev,
617 sys_image_guid);
618
619 case MLX5_VPORT_ACCESS_METHOD_HCA:
620 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
621 break;
622
623 case MLX5_VPORT_ACCESS_METHOD_NIC:
624 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp);
625 break;
626
627 default:
628 return -EINVAL;
629 }
630
631 if (!err)
632 *sys_image_guid = cpu_to_be64(tmp);
633
634 return err;
635
636 }
637
638 static int mlx5_query_max_pkeys(struct ib_device *ibdev,
639 u16 *max_pkeys)
640 {
641 struct mlx5_ib_dev *dev = to_mdev(ibdev);
642 struct mlx5_core_dev *mdev = dev->mdev;
643
644 switch (mlx5_get_vport_access_method(ibdev)) {
645 case MLX5_VPORT_ACCESS_METHOD_MAD:
646 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys);
647
648 case MLX5_VPORT_ACCESS_METHOD_HCA:
649 case MLX5_VPORT_ACCESS_METHOD_NIC:
650 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev,
651 pkey_table_size));
652 return 0;
653
654 default:
655 return -EINVAL;
656 }
657 }
658
659 static int mlx5_query_vendor_id(struct ib_device *ibdev,
660 u32 *vendor_id)
661 {
662 struct mlx5_ib_dev *dev = to_mdev(ibdev);
663
664 switch (mlx5_get_vport_access_method(ibdev)) {
665 case MLX5_VPORT_ACCESS_METHOD_MAD:
666 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id);
667
668 case MLX5_VPORT_ACCESS_METHOD_HCA:
669 case MLX5_VPORT_ACCESS_METHOD_NIC:
670 return mlx5_core_query_vendor_id(dev->mdev, vendor_id);
671
672 default:
673 return -EINVAL;
674 }
675 }
676
677 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
678 __be64 *node_guid)
679 {
680 u64 tmp;
681 int err;
682
683 switch (mlx5_get_vport_access_method(&dev->ib_dev)) {
684 case MLX5_VPORT_ACCESS_METHOD_MAD:
685 return mlx5_query_mad_ifc_node_guid(dev, node_guid);
686
687 case MLX5_VPORT_ACCESS_METHOD_HCA:
688 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
689 break;
690
691 case MLX5_VPORT_ACCESS_METHOD_NIC:
692 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp);
693 break;
694
695 default:
696 return -EINVAL;
697 }
698
699 if (!err)
700 *node_guid = cpu_to_be64(tmp);
701
702 return err;
703 }
704
705 struct mlx5_reg_node_desc {
706 u8 desc[IB_DEVICE_NODE_DESC_MAX];
707 };
708
709 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
710 {
711 struct mlx5_reg_node_desc in;
712
713 if (mlx5_use_mad_ifc(dev))
714 return mlx5_query_mad_ifc_node_desc(dev, node_desc);
715
716 memset(&in, 0, sizeof(in));
717
718 return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc,
719 sizeof(struct mlx5_reg_node_desc),
720 MLX5_REG_NODE_DESC, 0, 0);
721 }
722
723 static int mlx5_ib_query_device(struct ib_device *ibdev,
724 struct ib_device_attr *props,
725 struct ib_udata *uhw)
726 {
727 struct mlx5_ib_dev *dev = to_mdev(ibdev);
728 struct mlx5_core_dev *mdev = dev->mdev;
729 int err = -ENOMEM;
730 int max_sq_desc;
731 int max_rq_sg;
732 int max_sq_sg;
733 u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
734 bool raw_support = !mlx5_core_mp_enabled(mdev);
735 struct mlx5_ib_query_device_resp resp = {};
736 size_t resp_len;
737 u64 max_tso;
738
739 resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length);
740 if (uhw->outlen && uhw->outlen < resp_len)
741 return -EINVAL;
742 else
743 resp.response_length = resp_len;
744
745 if (uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen))
746 return -EINVAL;
747
748 memset(props, 0, sizeof(*props));
749 err = mlx5_query_system_image_guid(ibdev,
750 &props->sys_image_guid);
751 if (err)
752 return err;
753
754 err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys);
755 if (err)
756 return err;
757
758 err = mlx5_query_vendor_id(ibdev, &props->vendor_id);
759 if (err)
760 return err;
761
762 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
763 (fw_rev_min(dev->mdev) << 16) |
764 fw_rev_sub(dev->mdev);
765 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
766 IB_DEVICE_PORT_ACTIVE_EVENT |
767 IB_DEVICE_SYS_IMAGE_GUID |
768 IB_DEVICE_RC_RNR_NAK_GEN;
769
770 if (MLX5_CAP_GEN(mdev, pkv))
771 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
772 if (MLX5_CAP_GEN(mdev, qkv))
773 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
774 if (MLX5_CAP_GEN(mdev, apm))
775 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
776 if (MLX5_CAP_GEN(mdev, xrc))
777 props->device_cap_flags |= IB_DEVICE_XRC;
778 if (MLX5_CAP_GEN(mdev, imaicl)) {
779 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW |
780 IB_DEVICE_MEM_WINDOW_TYPE_2B;
781 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
782 /* We support 'Gappy' memory registration too */
783 props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG;
784 }
785 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
786 if (MLX5_CAP_GEN(mdev, sho)) {
787 props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
788 /* At this stage no support for signature handover */
789 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
790 IB_PROT_T10DIF_TYPE_2 |
791 IB_PROT_T10DIF_TYPE_3;
792 props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
793 IB_GUARD_T10DIF_CSUM;
794 }
795 if (MLX5_CAP_GEN(mdev, block_lb_mc))
796 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
797
798 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && raw_support) {
799 if (MLX5_CAP_ETH(mdev, csum_cap)) {
800 /* Legacy bit to support old userspace libraries */
801 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
802 props->raw_packet_caps |= IB_RAW_PACKET_CAP_IP_CSUM;
803 }
804
805 if (MLX5_CAP_ETH(dev->mdev, vlan_cap))
806 props->raw_packet_caps |=
807 IB_RAW_PACKET_CAP_CVLAN_STRIPPING;
808
809 if (field_avail(typeof(resp), tso_caps, uhw->outlen)) {
810 max_tso = MLX5_CAP_ETH(mdev, max_lso_cap);
811 if (max_tso) {
812 resp.tso_caps.max_tso = 1 << max_tso;
813 resp.tso_caps.supported_qpts |=
814 1 << IB_QPT_RAW_PACKET;
815 resp.response_length += sizeof(resp.tso_caps);
816 }
817 }
818
819 if (field_avail(typeof(resp), rss_caps, uhw->outlen)) {
820 resp.rss_caps.rx_hash_function =
821 MLX5_RX_HASH_FUNC_TOEPLITZ;
822 resp.rss_caps.rx_hash_fields_mask =
823 MLX5_RX_HASH_SRC_IPV4 |
824 MLX5_RX_HASH_DST_IPV4 |
825 MLX5_RX_HASH_SRC_IPV6 |
826 MLX5_RX_HASH_DST_IPV6 |
827 MLX5_RX_HASH_SRC_PORT_TCP |
828 MLX5_RX_HASH_DST_PORT_TCP |
829 MLX5_RX_HASH_SRC_PORT_UDP |
830 MLX5_RX_HASH_DST_PORT_UDP |
831 MLX5_RX_HASH_INNER;
832 resp.response_length += sizeof(resp.rss_caps);
833 }
834 } else {
835 if (field_avail(typeof(resp), tso_caps, uhw->outlen))
836 resp.response_length += sizeof(resp.tso_caps);
837 if (field_avail(typeof(resp), rss_caps, uhw->outlen))
838 resp.response_length += sizeof(resp.rss_caps);
839 }
840
841 if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
842 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
843 props->device_cap_flags |= IB_DEVICE_UD_TSO;
844 }
845
846 if (MLX5_CAP_GEN(dev->mdev, rq_delay_drop) &&
847 MLX5_CAP_GEN(dev->mdev, general_notification_event) &&
848 raw_support)
849 props->raw_packet_caps |= IB_RAW_PACKET_CAP_DELAY_DROP;
850
851 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
852 MLX5_CAP_IPOIB_ENHANCED(mdev, csum_cap))
853 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
854
855 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
856 MLX5_CAP_ETH(dev->mdev, scatter_fcs) &&
857 raw_support) {
858 /* Legacy bit to support old userspace libraries */
859 props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS;
860 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
861 }
862
863 if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS))
864 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
865
866 if (MLX5_CAP_GEN(mdev, end_pad))
867 props->device_cap_flags |= IB_DEVICE_PCI_WRITE_END_PADDING;
868
869 props->vendor_part_id = mdev->pdev->device;
870 props->hw_ver = mdev->pdev->revision;
871
872 props->max_mr_size = ~0ull;
873 props->page_size_cap = ~(min_page_size - 1);
874 props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp);
875 props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
876 max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) /
877 sizeof(struct mlx5_wqe_data_seg);
878 max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512);
879 max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) -
880 sizeof(struct mlx5_wqe_raddr_seg)) /
881 sizeof(struct mlx5_wqe_data_seg);
882 props->max_sge = min(max_rq_sg, max_sq_sg);
883 props->max_sge_rd = MLX5_MAX_SGE_RD;
884 props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq);
885 props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1;
886 props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
887 props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd);
888 props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp);
889 props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp);
890 props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq);
891 props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1;
892 props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay);
893 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
894 props->max_srq_sge = max_rq_sg - 1;
895 props->max_fast_reg_page_list_len =
896 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size);
897 get_atomic_caps_qp(dev, props);
898 props->masked_atomic_cap = IB_ATOMIC_NONE;
899 props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg);
900 props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
901 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
902 props->max_mcast_grp;
903 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
904 props->max_ah = INT_MAX;
905 props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz);
906 props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
907
908 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
909 if (MLX5_CAP_GEN(mdev, pg))
910 props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
911 props->odp_caps = dev->odp_caps;
912 #endif
913
914 if (MLX5_CAP_GEN(mdev, cd))
915 props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL;
916
917 if (!mlx5_core_is_pf(mdev))
918 props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION;
919
920 if (mlx5_ib_port_link_layer(ibdev, 1) ==
921 IB_LINK_LAYER_ETHERNET && raw_support) {
922 props->rss_caps.max_rwq_indirection_tables =
923 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt);
924 props->rss_caps.max_rwq_indirection_table_size =
925 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size);
926 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
927 props->max_wq_type_rq =
928 1 << MLX5_CAP_GEN(dev->mdev, log_max_rq);
929 }
930
931 if (MLX5_CAP_GEN(mdev, tag_matching)) {
932 props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE;
933 props->tm_caps.max_num_tags =
934 (1 << MLX5_CAP_GEN(mdev, log_tag_matching_list_sz)) - 1;
935 props->tm_caps.flags = IB_TM_CAP_RC;
936 props->tm_caps.max_ops =
937 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
938 props->tm_caps.max_sge = MLX5_TM_MAX_SGE;
939 }
940
941 if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) {
942 props->cq_caps.max_cq_moderation_count =
943 MLX5_MAX_CQ_COUNT;
944 props->cq_caps.max_cq_moderation_period =
945 MLX5_MAX_CQ_PERIOD;
946 }
947
948 if (field_avail(typeof(resp), cqe_comp_caps, uhw->outlen)) {
949 resp.cqe_comp_caps.max_num =
950 MLX5_CAP_GEN(dev->mdev, cqe_compression) ?
951 MLX5_CAP_GEN(dev->mdev, cqe_compression_max_num) : 0;
952 resp.cqe_comp_caps.supported_format =
953 MLX5_IB_CQE_RES_FORMAT_HASH |
954 MLX5_IB_CQE_RES_FORMAT_CSUM;
955 resp.response_length += sizeof(resp.cqe_comp_caps);
956 }
957
958 if (field_avail(typeof(resp), packet_pacing_caps, uhw->outlen) &&
959 raw_support) {
960 if (MLX5_CAP_QOS(mdev, packet_pacing) &&
961 MLX5_CAP_GEN(mdev, qos)) {
962 resp.packet_pacing_caps.qp_rate_limit_max =
963 MLX5_CAP_QOS(mdev, packet_pacing_max_rate);
964 resp.packet_pacing_caps.qp_rate_limit_min =
965 MLX5_CAP_QOS(mdev, packet_pacing_min_rate);
966 resp.packet_pacing_caps.supported_qpts |=
967 1 << IB_QPT_RAW_PACKET;
968 }
969 resp.response_length += sizeof(resp.packet_pacing_caps);
970 }
971
972 if (field_avail(typeof(resp), mlx5_ib_support_multi_pkt_send_wqes,
973 uhw->outlen)) {
974 if (MLX5_CAP_ETH(mdev, multi_pkt_send_wqe))
975 resp.mlx5_ib_support_multi_pkt_send_wqes =
976 MLX5_IB_ALLOW_MPW;
977
978 if (MLX5_CAP_ETH(mdev, enhanced_multi_pkt_send_wqe))
979 resp.mlx5_ib_support_multi_pkt_send_wqes |=
980 MLX5_IB_SUPPORT_EMPW;
981
982 resp.response_length +=
983 sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes);
984 }
985
986 if (field_avail(typeof(resp), flags, uhw->outlen)) {
987 resp.response_length += sizeof(resp.flags);
988
989 if (MLX5_CAP_GEN(mdev, cqe_compression_128))
990 resp.flags |=
991 MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP;
992
993 if (MLX5_CAP_GEN(mdev, cqe_128_always))
994 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_PAD;
995 }
996
997 if (field_avail(typeof(resp), sw_parsing_caps,
998 uhw->outlen)) {
999 resp.response_length += sizeof(resp.sw_parsing_caps);
1000 if (MLX5_CAP_ETH(mdev, swp)) {
1001 resp.sw_parsing_caps.sw_parsing_offloads |=
1002 MLX5_IB_SW_PARSING;
1003
1004 if (MLX5_CAP_ETH(mdev, swp_csum))
1005 resp.sw_parsing_caps.sw_parsing_offloads |=
1006 MLX5_IB_SW_PARSING_CSUM;
1007
1008 if (MLX5_CAP_ETH(mdev, swp_lso))
1009 resp.sw_parsing_caps.sw_parsing_offloads |=
1010 MLX5_IB_SW_PARSING_LSO;
1011
1012 if (resp.sw_parsing_caps.sw_parsing_offloads)
1013 resp.sw_parsing_caps.supported_qpts =
1014 BIT(IB_QPT_RAW_PACKET);
1015 }
1016 }
1017
1018 if (field_avail(typeof(resp), striding_rq_caps, uhw->outlen) &&
1019 raw_support) {
1020 resp.response_length += sizeof(resp.striding_rq_caps);
1021 if (MLX5_CAP_GEN(mdev, striding_rq)) {
1022 resp.striding_rq_caps.min_single_stride_log_num_of_bytes =
1023 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES;
1024 resp.striding_rq_caps.max_single_stride_log_num_of_bytes =
1025 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES;
1026 resp.striding_rq_caps.min_single_wqe_log_num_of_strides =
1027 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES;
1028 resp.striding_rq_caps.max_single_wqe_log_num_of_strides =
1029 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES;
1030 resp.striding_rq_caps.supported_qpts =
1031 BIT(IB_QPT_RAW_PACKET);
1032 }
1033 }
1034
1035 if (field_avail(typeof(resp), tunnel_offloads_caps,
1036 uhw->outlen)) {
1037 resp.response_length += sizeof(resp.tunnel_offloads_caps);
1038 if (MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan))
1039 resp.tunnel_offloads_caps |=
1040 MLX5_IB_TUNNELED_OFFLOADS_VXLAN;
1041 if (MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx))
1042 resp.tunnel_offloads_caps |=
1043 MLX5_IB_TUNNELED_OFFLOADS_GENEVE;
1044 if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre))
1045 resp.tunnel_offloads_caps |=
1046 MLX5_IB_TUNNELED_OFFLOADS_GRE;
1047 }
1048
1049 if (uhw->outlen) {
1050 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
1051
1052 if (err)
1053 return err;
1054 }
1055
1056 return 0;
1057 }
1058
1059 enum mlx5_ib_width {
1060 MLX5_IB_WIDTH_1X = 1 << 0,
1061 MLX5_IB_WIDTH_2X = 1 << 1,
1062 MLX5_IB_WIDTH_4X = 1 << 2,
1063 MLX5_IB_WIDTH_8X = 1 << 3,
1064 MLX5_IB_WIDTH_12X = 1 << 4
1065 };
1066
1067 static int translate_active_width(struct ib_device *ibdev, u8 active_width,
1068 u8 *ib_width)
1069 {
1070 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1071 int err = 0;
1072
1073 if (active_width & MLX5_IB_WIDTH_1X) {
1074 *ib_width = IB_WIDTH_1X;
1075 } else if (active_width & MLX5_IB_WIDTH_2X) {
1076 mlx5_ib_dbg(dev, "active_width %d is not supported by IB spec\n",
1077 (int)active_width);
1078 err = -EINVAL;
1079 } else if (active_width & MLX5_IB_WIDTH_4X) {
1080 *ib_width = IB_WIDTH_4X;
1081 } else if (active_width & MLX5_IB_WIDTH_8X) {
1082 *ib_width = IB_WIDTH_8X;
1083 } else if (active_width & MLX5_IB_WIDTH_12X) {
1084 *ib_width = IB_WIDTH_12X;
1085 } else {
1086 mlx5_ib_dbg(dev, "Invalid active_width %d\n",
1087 (int)active_width);
1088 err = -EINVAL;
1089 }
1090
1091 return err;
1092 }
1093
1094 static int mlx5_mtu_to_ib_mtu(int mtu)
1095 {
1096 switch (mtu) {
1097 case 256: return 1;
1098 case 512: return 2;
1099 case 1024: return 3;
1100 case 2048: return 4;
1101 case 4096: return 5;
1102 default:
1103 pr_warn("invalid mtu\n");
1104 return -1;
1105 }
1106 }
1107
1108 enum ib_max_vl_num {
1109 __IB_MAX_VL_0 = 1,
1110 __IB_MAX_VL_0_1 = 2,
1111 __IB_MAX_VL_0_3 = 3,
1112 __IB_MAX_VL_0_7 = 4,
1113 __IB_MAX_VL_0_14 = 5,
1114 };
1115
1116 enum mlx5_vl_hw_cap {
1117 MLX5_VL_HW_0 = 1,
1118 MLX5_VL_HW_0_1 = 2,
1119 MLX5_VL_HW_0_2 = 3,
1120 MLX5_VL_HW_0_3 = 4,
1121 MLX5_VL_HW_0_4 = 5,
1122 MLX5_VL_HW_0_5 = 6,
1123 MLX5_VL_HW_0_6 = 7,
1124 MLX5_VL_HW_0_7 = 8,
1125 MLX5_VL_HW_0_14 = 15
1126 };
1127
1128 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap,
1129 u8 *max_vl_num)
1130 {
1131 switch (vl_hw_cap) {
1132 case MLX5_VL_HW_0:
1133 *max_vl_num = __IB_MAX_VL_0;
1134 break;
1135 case MLX5_VL_HW_0_1:
1136 *max_vl_num = __IB_MAX_VL_0_1;
1137 break;
1138 case MLX5_VL_HW_0_3:
1139 *max_vl_num = __IB_MAX_VL_0_3;
1140 break;
1141 case MLX5_VL_HW_0_7:
1142 *max_vl_num = __IB_MAX_VL_0_7;
1143 break;
1144 case MLX5_VL_HW_0_14:
1145 *max_vl_num = __IB_MAX_VL_0_14;
1146 break;
1147
1148 default:
1149 return -EINVAL;
1150 }
1151
1152 return 0;
1153 }
1154
1155 static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port,
1156 struct ib_port_attr *props)
1157 {
1158 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1159 struct mlx5_core_dev *mdev = dev->mdev;
1160 struct mlx5_hca_vport_context *rep;
1161 u16 max_mtu;
1162 u16 oper_mtu;
1163 int err;
1164 u8 ib_link_width_oper;
1165 u8 vl_hw_cap;
1166
1167 rep = kzalloc(sizeof(*rep), GFP_KERNEL);
1168 if (!rep) {
1169 err = -ENOMEM;
1170 goto out;
1171 }
1172
1173 /* props being zeroed by the caller, avoid zeroing it here */
1174
1175 err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep);
1176 if (err)
1177 goto out;
1178
1179 props->lid = rep->lid;
1180 props->lmc = rep->lmc;
1181 props->sm_lid = rep->sm_lid;
1182 props->sm_sl = rep->sm_sl;
1183 props->state = rep->vport_state;
1184 props->phys_state = rep->port_physical_state;
1185 props->port_cap_flags = rep->cap_mask1;
1186 props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size));
1187 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
1188 props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size));
1189 props->bad_pkey_cntr = rep->pkey_violation_counter;
1190 props->qkey_viol_cntr = rep->qkey_violation_counter;
1191 props->subnet_timeout = rep->subnet_timeout;
1192 props->init_type_reply = rep->init_type_reply;
1193 props->grh_required = rep->grh_required;
1194
1195 err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port);
1196 if (err)
1197 goto out;
1198
1199 err = translate_active_width(ibdev, ib_link_width_oper,
1200 &props->active_width);
1201 if (err)
1202 goto out;
1203 err = mlx5_query_port_ib_proto_oper(mdev, &props->active_speed, port);
1204 if (err)
1205 goto out;
1206
1207 mlx5_query_port_max_mtu(mdev, &max_mtu, port);
1208
1209 props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu);
1210
1211 mlx5_query_port_oper_mtu(mdev, &oper_mtu, port);
1212
1213 props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu);
1214
1215 err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port);
1216 if (err)
1217 goto out;
1218
1219 err = translate_max_vl_num(ibdev, vl_hw_cap,
1220 &props->max_vl_num);
1221 out:
1222 kfree(rep);
1223 return err;
1224 }
1225
1226 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
1227 struct ib_port_attr *props)
1228 {
1229 unsigned int count;
1230 int ret;
1231
1232 switch (mlx5_get_vport_access_method(ibdev)) {
1233 case MLX5_VPORT_ACCESS_METHOD_MAD:
1234 ret = mlx5_query_mad_ifc_port(ibdev, port, props);
1235 break;
1236
1237 case MLX5_VPORT_ACCESS_METHOD_HCA:
1238 ret = mlx5_query_hca_port(ibdev, port, props);
1239 break;
1240
1241 case MLX5_VPORT_ACCESS_METHOD_NIC:
1242 ret = mlx5_query_port_roce(ibdev, port, props);
1243 break;
1244
1245 default:
1246 ret = -EINVAL;
1247 }
1248
1249 if (!ret && props) {
1250 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1251 struct mlx5_core_dev *mdev;
1252 bool put_mdev = true;
1253
1254 mdev = mlx5_ib_get_native_port_mdev(dev, port, NULL);
1255 if (!mdev) {
1256 /* If the port isn't affiliated yet query the master.
1257 * The master and slave will have the same values.
1258 */
1259 mdev = dev->mdev;
1260 port = 1;
1261 put_mdev = false;
1262 }
1263 count = mlx5_core_reserved_gids_count(mdev);
1264 if (put_mdev)
1265 mlx5_ib_put_native_port_mdev(dev, port);
1266 props->gid_tbl_len -= count;
1267 }
1268 return ret;
1269 }
1270
1271 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
1272 union ib_gid *gid)
1273 {
1274 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1275 struct mlx5_core_dev *mdev = dev->mdev;
1276
1277 switch (mlx5_get_vport_access_method(ibdev)) {
1278 case MLX5_VPORT_ACCESS_METHOD_MAD:
1279 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid);
1280
1281 case MLX5_VPORT_ACCESS_METHOD_HCA:
1282 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid);
1283
1284 default:
1285 return -EINVAL;
1286 }
1287
1288 }
1289
1290 static int mlx5_query_hca_nic_pkey(struct ib_device *ibdev, u8 port,
1291 u16 index, u16 *pkey)
1292 {
1293 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1294 struct mlx5_core_dev *mdev;
1295 bool put_mdev = true;
1296 u8 mdev_port_num;
1297 int err;
1298
1299 mdev = mlx5_ib_get_native_port_mdev(dev, port, &mdev_port_num);
1300 if (!mdev) {
1301 /* The port isn't affiliated yet, get the PKey from the master
1302 * port. For RoCE the PKey tables will be the same.
1303 */
1304 put_mdev = false;
1305 mdev = dev->mdev;
1306 mdev_port_num = 1;
1307 }
1308
1309 err = mlx5_query_hca_vport_pkey(mdev, 0, mdev_port_num, 0,
1310 index, pkey);
1311 if (put_mdev)
1312 mlx5_ib_put_native_port_mdev(dev, port);
1313
1314 return err;
1315 }
1316
1317 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
1318 u16 *pkey)
1319 {
1320 switch (mlx5_get_vport_access_method(ibdev)) {
1321 case MLX5_VPORT_ACCESS_METHOD_MAD:
1322 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey);
1323
1324 case MLX5_VPORT_ACCESS_METHOD_HCA:
1325 case MLX5_VPORT_ACCESS_METHOD_NIC:
1326 return mlx5_query_hca_nic_pkey(ibdev, port, index, pkey);
1327 default:
1328 return -EINVAL;
1329 }
1330 }
1331
1332 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
1333 struct ib_device_modify *props)
1334 {
1335 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1336 struct mlx5_reg_node_desc in;
1337 struct mlx5_reg_node_desc out;
1338 int err;
1339
1340 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
1341 return -EOPNOTSUPP;
1342
1343 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1344 return 0;
1345
1346 /*
1347 * If possible, pass node desc to FW, so it can generate
1348 * a 144 trap. If cmd fails, just ignore.
1349 */
1350 memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1351 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
1352 sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
1353 if (err)
1354 return err;
1355
1356 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1357
1358 return err;
1359 }
1360
1361 static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u8 port_num, u32 mask,
1362 u32 value)
1363 {
1364 struct mlx5_hca_vport_context ctx = {};
1365 struct mlx5_core_dev *mdev;
1366 u8 mdev_port_num;
1367 int err;
1368
1369 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
1370 if (!mdev)
1371 return -ENODEV;
1372
1373 err = mlx5_query_hca_vport_context(mdev, 0, mdev_port_num, 0, &ctx);
1374 if (err)
1375 goto out;
1376
1377 if (~ctx.cap_mask1_perm & mask) {
1378 mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n",
1379 mask, ctx.cap_mask1_perm);
1380 err = -EINVAL;
1381 goto out;
1382 }
1383
1384 ctx.cap_mask1 = value;
1385 ctx.cap_mask1_perm = mask;
1386 err = mlx5_core_modify_hca_vport_context(mdev, 0, mdev_port_num,
1387 0, &ctx);
1388
1389 out:
1390 mlx5_ib_put_native_port_mdev(dev, port_num);
1391
1392 return err;
1393 }
1394
1395 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1396 struct ib_port_modify *props)
1397 {
1398 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1399 struct ib_port_attr attr;
1400 u32 tmp;
1401 int err;
1402 u32 change_mask;
1403 u32 value;
1404 bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) ==
1405 IB_LINK_LAYER_INFINIBAND);
1406
1407 /* CM layer calls ib_modify_port() regardless of the link layer. For
1408 * Ethernet ports, qkey violation and Port capabilities are meaningless.
1409 */
1410 if (!is_ib)
1411 return 0;
1412
1413 if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) {
1414 change_mask = props->clr_port_cap_mask | props->set_port_cap_mask;
1415 value = ~props->clr_port_cap_mask | props->set_port_cap_mask;
1416 return set_port_caps_atomic(dev, port, change_mask, value);
1417 }
1418
1419 mutex_lock(&dev->cap_mask_mutex);
1420
1421 err = ib_query_port(ibdev, port, &attr);
1422 if (err)
1423 goto out;
1424
1425 tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
1426 ~props->clr_port_cap_mask;
1427
1428 err = mlx5_set_port_caps(dev->mdev, port, tmp);
1429
1430 out:
1431 mutex_unlock(&dev->cap_mask_mutex);
1432 return err;
1433 }
1434
1435 static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps)
1436 {
1437 mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n",
1438 caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n");
1439 }
1440
1441 static u16 calc_dynamic_bfregs(int uars_per_sys_page)
1442 {
1443 /* Large page with non 4k uar support might limit the dynamic size */
1444 if (uars_per_sys_page == 1 && PAGE_SIZE > 4096)
1445 return MLX5_MIN_DYN_BFREGS;
1446
1447 return MLX5_MAX_DYN_BFREGS;
1448 }
1449
1450 static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k,
1451 struct mlx5_ib_alloc_ucontext_req_v2 *req,
1452 struct mlx5_bfreg_info *bfregi)
1453 {
1454 int uars_per_sys_page;
1455 int bfregs_per_sys_page;
1456 int ref_bfregs = req->total_num_bfregs;
1457
1458 if (req->total_num_bfregs == 0)
1459 return -EINVAL;
1460
1461 BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE);
1462 BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE);
1463
1464 if (req->total_num_bfregs > MLX5_MAX_BFREGS)
1465 return -ENOMEM;
1466
1467 uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k);
1468 bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR;
1469 /* This holds the required static allocation asked by the user */
1470 req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page);
1471 if (req->num_low_latency_bfregs > req->total_num_bfregs - 1)
1472 return -EINVAL;
1473
1474 bfregi->num_static_sys_pages = req->total_num_bfregs / bfregs_per_sys_page;
1475 bfregi->num_dyn_bfregs = ALIGN(calc_dynamic_bfregs(uars_per_sys_page), bfregs_per_sys_page);
1476 bfregi->total_num_bfregs = req->total_num_bfregs + bfregi->num_dyn_bfregs;
1477 bfregi->num_sys_pages = bfregi->total_num_bfregs / bfregs_per_sys_page;
1478
1479 mlx5_ib_dbg(dev, "uar_4k: fw support %s, lib support %s, user requested %d bfregs, allocated %d, total bfregs %d, using %d sys pages\n",
1480 MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no",
1481 lib_uar_4k ? "yes" : "no", ref_bfregs,
1482 req->total_num_bfregs, bfregi->total_num_bfregs,
1483 bfregi->num_sys_pages);
1484
1485 return 0;
1486 }
1487
1488 static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
1489 {
1490 struct mlx5_bfreg_info *bfregi;
1491 int err;
1492 int i;
1493
1494 bfregi = &context->bfregi;
1495 for (i = 0; i < bfregi->num_static_sys_pages; i++) {
1496 err = mlx5_cmd_alloc_uar(dev->mdev, &bfregi->sys_pages[i]);
1497 if (err)
1498 goto error;
1499
1500 mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]);
1501 }
1502
1503 for (i = bfregi->num_static_sys_pages; i < bfregi->num_sys_pages; i++)
1504 bfregi->sys_pages[i] = MLX5_IB_INVALID_UAR_INDEX;
1505
1506 return 0;
1507
1508 error:
1509 for (--i; i >= 0; i--)
1510 if (mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]))
1511 mlx5_ib_warn(dev, "failed to free uar %d\n", i);
1512
1513 return err;
1514 }
1515
1516 static int deallocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
1517 {
1518 struct mlx5_bfreg_info *bfregi;
1519 int err;
1520 int i;
1521
1522 bfregi = &context->bfregi;
1523 for (i = 0; i < bfregi->num_sys_pages; i++) {
1524 if (i < bfregi->num_static_sys_pages ||
1525 bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX) {
1526 err = mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]);
1527 if (err) {
1528 mlx5_ib_warn(dev, "failed to free uar %d, err=%d\n", i, err);
1529 return err;
1530 }
1531 }
1532 }
1533
1534 return 0;
1535 }
1536
1537 static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn)
1538 {
1539 int err;
1540
1541 err = mlx5_core_alloc_transport_domain(dev->mdev, tdn);
1542 if (err)
1543 return err;
1544
1545 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
1546 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
1547 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
1548 return err;
1549
1550 mutex_lock(&dev->lb_mutex);
1551 dev->user_td++;
1552
1553 if (dev->user_td == 2)
1554 err = mlx5_nic_vport_update_local_lb(dev->mdev, true);
1555
1556 mutex_unlock(&dev->lb_mutex);
1557 return err;
1558 }
1559
1560 static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn)
1561 {
1562 mlx5_core_dealloc_transport_domain(dev->mdev, tdn);
1563
1564 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
1565 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
1566 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
1567 return;
1568
1569 mutex_lock(&dev->lb_mutex);
1570 dev->user_td--;
1571
1572 if (dev->user_td < 2)
1573 mlx5_nic_vport_update_local_lb(dev->mdev, false);
1574
1575 mutex_unlock(&dev->lb_mutex);
1576 }
1577
1578 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
1579 struct ib_udata *udata)
1580 {
1581 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1582 struct mlx5_ib_alloc_ucontext_req_v2 req = {};
1583 struct mlx5_ib_alloc_ucontext_resp resp = {};
1584 struct mlx5_core_dev *mdev = dev->mdev;
1585 struct mlx5_ib_ucontext *context;
1586 struct mlx5_bfreg_info *bfregi;
1587 int ver;
1588 int err;
1589 size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2,
1590 max_cqe_version);
1591 bool lib_uar_4k;
1592
1593 if (!dev->ib_active)
1594 return ERR_PTR(-EAGAIN);
1595
1596 if (udata->inlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
1597 ver = 0;
1598 else if (udata->inlen >= min_req_v2)
1599 ver = 2;
1600 else
1601 return ERR_PTR(-EINVAL);
1602
1603 err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req)));
1604 if (err)
1605 return ERR_PTR(err);
1606
1607 if (req.flags)
1608 return ERR_PTR(-EINVAL);
1609
1610 if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2)
1611 return ERR_PTR(-EOPNOTSUPP);
1612
1613 req.total_num_bfregs = ALIGN(req.total_num_bfregs,
1614 MLX5_NON_FP_BFREGS_PER_UAR);
1615 if (req.num_low_latency_bfregs > req.total_num_bfregs - 1)
1616 return ERR_PTR(-EINVAL);
1617
1618 resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp);
1619 if (mlx5_core_is_pf(dev->mdev) && MLX5_CAP_GEN(dev->mdev, bf))
1620 resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size);
1621 resp.cache_line_size = cache_line_size();
1622 resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq);
1623 resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq);
1624 resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
1625 resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
1626 resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
1627 resp.cqe_version = min_t(__u8,
1628 (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version),
1629 req.max_cqe_version);
1630 resp.log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1631 MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT;
1632 resp.num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1633 MLX5_CAP_GEN(dev->mdev, num_of_uars_per_page) : 1;
1634 resp.response_length = min(offsetof(typeof(resp), response_length) +
1635 sizeof(resp.response_length), udata->outlen);
1636
1637 context = kzalloc(sizeof(*context), GFP_KERNEL);
1638 if (!context)
1639 return ERR_PTR(-ENOMEM);
1640
1641 lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR;
1642 bfregi = &context->bfregi;
1643
1644 /* updates req->total_num_bfregs */
1645 err = calc_total_bfregs(dev, lib_uar_4k, &req, bfregi);
1646 if (err)
1647 goto out_ctx;
1648
1649 mutex_init(&bfregi->lock);
1650 bfregi->lib_uar_4k = lib_uar_4k;
1651 bfregi->count = kcalloc(bfregi->total_num_bfregs, sizeof(*bfregi->count),
1652 GFP_KERNEL);
1653 if (!bfregi->count) {
1654 err = -ENOMEM;
1655 goto out_ctx;
1656 }
1657
1658 bfregi->sys_pages = kcalloc(bfregi->num_sys_pages,
1659 sizeof(*bfregi->sys_pages),
1660 GFP_KERNEL);
1661 if (!bfregi->sys_pages) {
1662 err = -ENOMEM;
1663 goto out_count;
1664 }
1665
1666 err = allocate_uars(dev, context);
1667 if (err)
1668 goto out_sys_pages;
1669
1670 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1671 context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
1672 #endif
1673
1674 context->upd_xlt_page = __get_free_page(GFP_KERNEL);
1675 if (!context->upd_xlt_page) {
1676 err = -ENOMEM;
1677 goto out_uars;
1678 }
1679 mutex_init(&context->upd_xlt_page_mutex);
1680
1681 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) {
1682 err = mlx5_ib_alloc_transport_domain(dev, &context->tdn);
1683 if (err)
1684 goto out_page;
1685 }
1686
1687 INIT_LIST_HEAD(&context->vma_private_list);
1688 mutex_init(&context->vma_private_list_mutex);
1689 INIT_LIST_HEAD(&context->db_page_list);
1690 mutex_init(&context->db_page_mutex);
1691
1692 resp.tot_bfregs = req.total_num_bfregs;
1693 resp.num_ports = dev->num_ports;
1694
1695 if (field_avail(typeof(resp), cqe_version, udata->outlen))
1696 resp.response_length += sizeof(resp.cqe_version);
1697
1698 if (field_avail(typeof(resp), cmds_supp_uhw, udata->outlen)) {
1699 resp.cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE |
1700 MLX5_USER_CMDS_SUPP_UHW_CREATE_AH;
1701 resp.response_length += sizeof(resp.cmds_supp_uhw);
1702 }
1703
1704 if (field_avail(typeof(resp), eth_min_inline, udata->outlen)) {
1705 if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) {
1706 mlx5_query_min_inline(dev->mdev, &resp.eth_min_inline);
1707 resp.eth_min_inline++;
1708 }
1709 resp.response_length += sizeof(resp.eth_min_inline);
1710 }
1711
1712 if (field_avail(typeof(resp), clock_info_versions, udata->outlen)) {
1713 if (mdev->clock_info)
1714 resp.clock_info_versions = BIT(MLX5_IB_CLOCK_INFO_V1);
1715 resp.response_length += sizeof(resp.clock_info_versions);
1716 }
1717
1718 /*
1719 * We don't want to expose information from the PCI bar that is located
1720 * after 4096 bytes, so if the arch only supports larger pages, let's
1721 * pretend we don't support reading the HCA's core clock. This is also
1722 * forced by mmap function.
1723 */
1724 if (field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) {
1725 if (PAGE_SIZE <= 4096) {
1726 resp.comp_mask |=
1727 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET;
1728 resp.hca_core_clock_offset =
1729 offsetof(struct mlx5_init_seg, internal_timer_h) % PAGE_SIZE;
1730 }
1731 resp.response_length += sizeof(resp.hca_core_clock_offset);
1732 }
1733
1734 if (field_avail(typeof(resp), log_uar_size, udata->outlen))
1735 resp.response_length += sizeof(resp.log_uar_size);
1736
1737 if (field_avail(typeof(resp), num_uars_per_page, udata->outlen))
1738 resp.response_length += sizeof(resp.num_uars_per_page);
1739
1740 if (field_avail(typeof(resp), num_dyn_bfregs, udata->outlen)) {
1741 resp.num_dyn_bfregs = bfregi->num_dyn_bfregs;
1742 resp.response_length += sizeof(resp.num_dyn_bfregs);
1743 }
1744
1745 err = ib_copy_to_udata(udata, &resp, resp.response_length);
1746 if (err)
1747 goto out_td;
1748
1749 bfregi->ver = ver;
1750 bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs;
1751 context->cqe_version = resp.cqe_version;
1752 context->lib_caps = req.lib_caps;
1753 print_lib_caps(dev, context->lib_caps);
1754
1755 return &context->ibucontext;
1756
1757 out_td:
1758 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1759 mlx5_ib_dealloc_transport_domain(dev, context->tdn);
1760
1761 out_page:
1762 free_page(context->upd_xlt_page);
1763
1764 out_uars:
1765 deallocate_uars(dev, context);
1766
1767 out_sys_pages:
1768 kfree(bfregi->sys_pages);
1769
1770 out_count:
1771 kfree(bfregi->count);
1772
1773 out_ctx:
1774 kfree(context);
1775
1776 return ERR_PTR(err);
1777 }
1778
1779 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1780 {
1781 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1782 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
1783 struct mlx5_bfreg_info *bfregi;
1784
1785 bfregi = &context->bfregi;
1786 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1787 mlx5_ib_dealloc_transport_domain(dev, context->tdn);
1788
1789 free_page(context->upd_xlt_page);
1790 deallocate_uars(dev, context);
1791 kfree(bfregi->sys_pages);
1792 kfree(bfregi->count);
1793 kfree(context);
1794
1795 return 0;
1796 }
1797
1798 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev,
1799 int uar_idx)
1800 {
1801 int fw_uars_per_page;
1802
1803 fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1;
1804
1805 return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + uar_idx / fw_uars_per_page;
1806 }
1807
1808 static int get_command(unsigned long offset)
1809 {
1810 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
1811 }
1812
1813 static int get_arg(unsigned long offset)
1814 {
1815 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
1816 }
1817
1818 static int get_index(unsigned long offset)
1819 {
1820 return get_arg(offset);
1821 }
1822
1823 /* Index resides in an extra byte to enable larger values than 255 */
1824 static int get_extended_index(unsigned long offset)
1825 {
1826 return get_arg(offset) | ((offset >> 16) & 0xff) << 8;
1827 }
1828
1829 static void mlx5_ib_vma_open(struct vm_area_struct *area)
1830 {
1831 /* vma_open is called when a new VMA is created on top of our VMA. This
1832 * is done through either mremap flow or split_vma (usually due to
1833 * mlock, madvise, munmap, etc.) We do not support a clone of the VMA,
1834 * as this VMA is strongly hardware related. Therefore we set the
1835 * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1836 * calling us again and trying to do incorrect actions. We assume that
1837 * the original VMA size is exactly a single page, and therefore all
1838 * "splitting" operation will not happen to it.
1839 */
1840 area->vm_ops = NULL;
1841 }
1842
1843 static void mlx5_ib_vma_close(struct vm_area_struct *area)
1844 {
1845 struct mlx5_ib_vma_private_data *mlx5_ib_vma_priv_data;
1846
1847 /* It's guaranteed that all VMAs opened on a FD are closed before the
1848 * file itself is closed, therefore no sync is needed with the regular
1849 * closing flow. (e.g. mlx5 ib_dealloc_ucontext)
1850 * However need a sync with accessing the vma as part of
1851 * mlx5_ib_disassociate_ucontext.
1852 * The close operation is usually called under mm->mmap_sem except when
1853 * process is exiting.
1854 * The exiting case is handled explicitly as part of
1855 * mlx5_ib_disassociate_ucontext.
1856 */
1857 mlx5_ib_vma_priv_data = (struct mlx5_ib_vma_private_data *)area->vm_private_data;
1858
1859 /* setting the vma context pointer to null in the mlx5_ib driver's
1860 * private data, to protect a race condition in
1861 * mlx5_ib_disassociate_ucontext().
1862 */
1863 mlx5_ib_vma_priv_data->vma = NULL;
1864 mutex_lock(mlx5_ib_vma_priv_data->vma_private_list_mutex);
1865 list_del(&mlx5_ib_vma_priv_data->list);
1866 mutex_unlock(mlx5_ib_vma_priv_data->vma_private_list_mutex);
1867 kfree(mlx5_ib_vma_priv_data);
1868 }
1869
1870 static const struct vm_operations_struct mlx5_ib_vm_ops = {
1871 .open = mlx5_ib_vma_open,
1872 .close = mlx5_ib_vma_close
1873 };
1874
1875 static int mlx5_ib_set_vma_data(struct vm_area_struct *vma,
1876 struct mlx5_ib_ucontext *ctx)
1877 {
1878 struct mlx5_ib_vma_private_data *vma_prv;
1879 struct list_head *vma_head = &ctx->vma_private_list;
1880
1881 vma_prv = kzalloc(sizeof(*vma_prv), GFP_KERNEL);
1882 if (!vma_prv)
1883 return -ENOMEM;
1884
1885 vma_prv->vma = vma;
1886 vma_prv->vma_private_list_mutex = &ctx->vma_private_list_mutex;
1887 vma->vm_private_data = vma_prv;
1888 vma->vm_ops = &mlx5_ib_vm_ops;
1889
1890 mutex_lock(&ctx->vma_private_list_mutex);
1891 list_add(&vma_prv->list, vma_head);
1892 mutex_unlock(&ctx->vma_private_list_mutex);
1893
1894 return 0;
1895 }
1896
1897 static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1898 {
1899 int ret;
1900 struct vm_area_struct *vma;
1901 struct mlx5_ib_vma_private_data *vma_private, *n;
1902 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1903 struct task_struct *owning_process = NULL;
1904 struct mm_struct *owning_mm = NULL;
1905
1906 owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1907 if (!owning_process)
1908 return;
1909
1910 owning_mm = get_task_mm(owning_process);
1911 if (!owning_mm) {
1912 pr_info("no mm, disassociate ucontext is pending task termination\n");
1913 while (1) {
1914 put_task_struct(owning_process);
1915 usleep_range(1000, 2000);
1916 owning_process = get_pid_task(ibcontext->tgid,
1917 PIDTYPE_PID);
1918 if (!owning_process ||
1919 owning_process->state == TASK_DEAD) {
1920 pr_info("disassociate ucontext done, task was terminated\n");
1921 /* in case task was dead need to release the
1922 * task struct.
1923 */
1924 if (owning_process)
1925 put_task_struct(owning_process);
1926 return;
1927 }
1928 }
1929 }
1930
1931 /* need to protect from a race on closing the vma as part of
1932 * mlx5_ib_vma_close.
1933 */
1934 down_write(&owning_mm->mmap_sem);
1935 mutex_lock(&context->vma_private_list_mutex);
1936 list_for_each_entry_safe(vma_private, n, &context->vma_private_list,
1937 list) {
1938 vma = vma_private->vma;
1939 ret = zap_vma_ptes(vma, vma->vm_start,
1940 PAGE_SIZE);
1941 WARN_ONCE(ret, "%s: zap_vma_ptes failed", __func__);
1942 /* context going to be destroyed, should
1943 * not access ops any more.
1944 */
1945 vma->vm_flags &= ~(VM_SHARED | VM_MAYSHARE);
1946 vma->vm_ops = NULL;
1947 list_del(&vma_private->list);
1948 kfree(vma_private);
1949 }
1950 mutex_unlock(&context->vma_private_list_mutex);
1951 up_write(&owning_mm->mmap_sem);
1952 mmput(owning_mm);
1953 put_task_struct(owning_process);
1954 }
1955
1956 static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd)
1957 {
1958 switch (cmd) {
1959 case MLX5_IB_MMAP_WC_PAGE:
1960 return "WC";
1961 case MLX5_IB_MMAP_REGULAR_PAGE:
1962 return "best effort WC";
1963 case MLX5_IB_MMAP_NC_PAGE:
1964 return "NC";
1965 default:
1966 return NULL;
1967 }
1968 }
1969
1970 static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev,
1971 struct vm_area_struct *vma,
1972 struct mlx5_ib_ucontext *context)
1973 {
1974 phys_addr_t pfn;
1975 int err;
1976
1977 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1978 return -EINVAL;
1979
1980 if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1)
1981 return -EOPNOTSUPP;
1982
1983 if (vma->vm_flags & VM_WRITE)
1984 return -EPERM;
1985
1986 if (!dev->mdev->clock_info_page)
1987 return -EOPNOTSUPP;
1988
1989 pfn = page_to_pfn(dev->mdev->clock_info_page);
1990 err = remap_pfn_range(vma, vma->vm_start, pfn, PAGE_SIZE,
1991 vma->vm_page_prot);
1992 if (err)
1993 return err;
1994
1995 mlx5_ib_dbg(dev, "mapped clock info at 0x%lx, PA 0x%llx\n",
1996 vma->vm_start,
1997 (unsigned long long)pfn << PAGE_SHIFT);
1998
1999 return mlx5_ib_set_vma_data(vma, context);
2000 }
2001
2002 static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd,
2003 struct vm_area_struct *vma,
2004 struct mlx5_ib_ucontext *context)
2005 {
2006 struct mlx5_bfreg_info *bfregi = &context->bfregi;
2007 int err;
2008 unsigned long idx;
2009 phys_addr_t pfn, pa;
2010 pgprot_t prot;
2011 u32 bfreg_dyn_idx = 0;
2012 u32 uar_index;
2013 int dyn_uar = (cmd == MLX5_IB_MMAP_ALLOC_WC);
2014 int max_valid_idx = dyn_uar ? bfregi->num_sys_pages :
2015 bfregi->num_static_sys_pages;
2016
2017 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
2018 return -EINVAL;
2019
2020 if (dyn_uar)
2021 idx = get_extended_index(vma->vm_pgoff) + bfregi->num_static_sys_pages;
2022 else
2023 idx = get_index(vma->vm_pgoff);
2024
2025 if (idx >= max_valid_idx) {
2026 mlx5_ib_warn(dev, "invalid uar index %lu, max=%d\n",
2027 idx, max_valid_idx);
2028 return -EINVAL;
2029 }
2030
2031 switch (cmd) {
2032 case MLX5_IB_MMAP_WC_PAGE:
2033 case MLX5_IB_MMAP_ALLOC_WC:
2034 /* Some architectures don't support WC memory */
2035 #if defined(CONFIG_X86)
2036 if (!pat_enabled())
2037 return -EPERM;
2038 #elif !(defined(CONFIG_PPC) || (defined(CONFIG_ARM) && defined(CONFIG_MMU)))
2039 return -EPERM;
2040 #endif
2041 /* fall through */
2042 case MLX5_IB_MMAP_REGULAR_PAGE:
2043 /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */
2044 prot = pgprot_writecombine(vma->vm_page_prot);
2045 break;
2046 case MLX5_IB_MMAP_NC_PAGE:
2047 prot = pgprot_noncached(vma->vm_page_prot);
2048 break;
2049 default:
2050 return -EINVAL;
2051 }
2052
2053 if (dyn_uar) {
2054 int uars_per_page;
2055
2056 uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k);
2057 bfreg_dyn_idx = idx * (uars_per_page * MLX5_NON_FP_BFREGS_PER_UAR);
2058 if (bfreg_dyn_idx >= bfregi->total_num_bfregs) {
2059 mlx5_ib_warn(dev, "invalid bfreg_dyn_idx %u, max=%u\n",
2060 bfreg_dyn_idx, bfregi->total_num_bfregs);
2061 return -EINVAL;
2062 }
2063
2064 mutex_lock(&bfregi->lock);
2065 /* Fail if uar already allocated, first bfreg index of each
2066 * page holds its count.
2067 */
2068 if (bfregi->count[bfreg_dyn_idx]) {
2069 mlx5_ib_warn(dev, "wrong offset, idx %lu is busy, bfregn=%u\n", idx, bfreg_dyn_idx);
2070 mutex_unlock(&bfregi->lock);
2071 return -EINVAL;
2072 }
2073
2074 bfregi->count[bfreg_dyn_idx]++;
2075 mutex_unlock(&bfregi->lock);
2076
2077 err = mlx5_cmd_alloc_uar(dev->mdev, &uar_index);
2078 if (err) {
2079 mlx5_ib_warn(dev, "UAR alloc failed\n");
2080 goto free_bfreg;
2081 }
2082 } else {
2083 uar_index = bfregi->sys_pages[idx];
2084 }
2085
2086 pfn = uar_index2pfn(dev, uar_index);
2087 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn);
2088
2089 vma->vm_page_prot = prot;
2090 err = io_remap_pfn_range(vma, vma->vm_start, pfn,
2091 PAGE_SIZE, vma->vm_page_prot);
2092 if (err) {
2093 mlx5_ib_err(dev, "io_remap_pfn_range failed with error=%d, vm_start=0x%lx, pfn=%pa, mmap_cmd=%s\n",
2094 err, vma->vm_start, &pfn, mmap_cmd2str(cmd));
2095 err = -EAGAIN;
2096 goto err;
2097 }
2098
2099 pa = pfn << PAGE_SHIFT;
2100 mlx5_ib_dbg(dev, "mapped %s at 0x%lx, PA %pa\n", mmap_cmd2str(cmd),
2101 vma->vm_start, &pa);
2102
2103 err = mlx5_ib_set_vma_data(vma, context);
2104 if (err)
2105 goto err;
2106
2107 if (dyn_uar)
2108 bfregi->sys_pages[idx] = uar_index;
2109 return 0;
2110
2111 err:
2112 if (!dyn_uar)
2113 return err;
2114
2115 mlx5_cmd_free_uar(dev->mdev, idx);
2116
2117 free_bfreg:
2118 mlx5_ib_free_bfreg(dev, bfregi, bfreg_dyn_idx);
2119
2120 return err;
2121 }
2122
2123 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
2124 {
2125 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
2126 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
2127 unsigned long command;
2128 phys_addr_t pfn;
2129
2130 command = get_command(vma->vm_pgoff);
2131 switch (command) {
2132 case MLX5_IB_MMAP_WC_PAGE:
2133 case MLX5_IB_MMAP_NC_PAGE:
2134 case MLX5_IB_MMAP_REGULAR_PAGE:
2135 case MLX5_IB_MMAP_ALLOC_WC:
2136 return uar_mmap(dev, command, vma, context);
2137
2138 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
2139 return -ENOSYS;
2140
2141 case MLX5_IB_MMAP_CORE_CLOCK:
2142 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
2143 return -EINVAL;
2144
2145 if (vma->vm_flags & VM_WRITE)
2146 return -EPERM;
2147
2148 /* Don't expose to user-space information it shouldn't have */
2149 if (PAGE_SIZE > 4096)
2150 return -EOPNOTSUPP;
2151
2152 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
2153 pfn = (dev->mdev->iseg_base +
2154 offsetof(struct mlx5_init_seg, internal_timer_h)) >>
2155 PAGE_SHIFT;
2156 if (io_remap_pfn_range(vma, vma->vm_start, pfn,
2157 PAGE_SIZE, vma->vm_page_prot))
2158 return -EAGAIN;
2159
2160 mlx5_ib_dbg(dev, "mapped internal timer at 0x%lx, PA 0x%llx\n",
2161 vma->vm_start,
2162 (unsigned long long)pfn << PAGE_SHIFT);
2163 break;
2164 case MLX5_IB_MMAP_CLOCK_INFO:
2165 return mlx5_ib_mmap_clock_info_page(dev, vma, context);
2166
2167 default:
2168 return -EINVAL;
2169 }
2170
2171 return 0;
2172 }
2173
2174 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
2175 struct ib_ucontext *context,
2176 struct ib_udata *udata)
2177 {
2178 struct mlx5_ib_alloc_pd_resp resp;
2179 struct mlx5_ib_pd *pd;
2180 int err;
2181
2182 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
2183 if (!pd)
2184 return ERR_PTR(-ENOMEM);
2185
2186 err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn);
2187 if (err) {
2188 kfree(pd);
2189 return ERR_PTR(err);
2190 }
2191
2192 if (context) {
2193 resp.pdn = pd->pdn;
2194 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
2195 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn);
2196 kfree(pd);
2197 return ERR_PTR(-EFAULT);
2198 }
2199 }
2200
2201 return &pd->ibpd;
2202 }
2203
2204 static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
2205 {
2206 struct mlx5_ib_dev *mdev = to_mdev(pd->device);
2207 struct mlx5_ib_pd *mpd = to_mpd(pd);
2208
2209 mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn);
2210 kfree(mpd);
2211
2212 return 0;
2213 }
2214
2215 enum {
2216 MATCH_CRITERIA_ENABLE_OUTER_BIT,
2217 MATCH_CRITERIA_ENABLE_MISC_BIT,
2218 MATCH_CRITERIA_ENABLE_INNER_BIT
2219 };
2220
2221 #define HEADER_IS_ZERO(match_criteria, headers) \
2222 !(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \
2223 0, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \
2224
2225 static u8 get_match_criteria_enable(u32 *match_criteria)
2226 {
2227 u8 match_criteria_enable;
2228
2229 match_criteria_enable =
2230 (!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
2231 MATCH_CRITERIA_ENABLE_OUTER_BIT;
2232 match_criteria_enable |=
2233 (!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
2234 MATCH_CRITERIA_ENABLE_MISC_BIT;
2235 match_criteria_enable |=
2236 (!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
2237 MATCH_CRITERIA_ENABLE_INNER_BIT;
2238
2239 return match_criteria_enable;
2240 }
2241
2242 static void set_proto(void *outer_c, void *outer_v, u8 mask, u8 val)
2243 {
2244 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask);
2245 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val);
2246 }
2247
2248 static void set_flow_label(void *misc_c, void *misc_v, u8 mask, u8 val,
2249 bool inner)
2250 {
2251 if (inner) {
2252 MLX5_SET(fte_match_set_misc,
2253 misc_c, inner_ipv6_flow_label, mask);
2254 MLX5_SET(fte_match_set_misc,
2255 misc_v, inner_ipv6_flow_label, val);
2256 } else {
2257 MLX5_SET(fte_match_set_misc,
2258 misc_c, outer_ipv6_flow_label, mask);
2259 MLX5_SET(fte_match_set_misc,
2260 misc_v, outer_ipv6_flow_label, val);
2261 }
2262 }
2263
2264 static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
2265 {
2266 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask);
2267 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val);
2268 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2);
2269 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2);
2270 }
2271
2272 #define LAST_ETH_FIELD vlan_tag
2273 #define LAST_IB_FIELD sl
2274 #define LAST_IPV4_FIELD tos
2275 #define LAST_IPV6_FIELD traffic_class
2276 #define LAST_TCP_UDP_FIELD src_port
2277 #define LAST_TUNNEL_FIELD tunnel_id
2278 #define LAST_FLOW_TAG_FIELD tag_id
2279 #define LAST_DROP_FIELD size
2280
2281 /* Field is the last supported field */
2282 #define FIELDS_NOT_SUPPORTED(filter, field)\
2283 memchr_inv((void *)&filter.field +\
2284 sizeof(filter.field), 0,\
2285 sizeof(filter) -\
2286 offsetof(typeof(filter), field) -\
2287 sizeof(filter.field))
2288
2289 #define IPV4_VERSION 4
2290 #define IPV6_VERSION 6
2291 static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c,
2292 u32 *match_v, const union ib_flow_spec *ib_spec,
2293 u32 *tag_id, bool *is_drop)
2294 {
2295 void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
2296 misc_parameters);
2297 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
2298 misc_parameters);
2299 void *headers_c;
2300 void *headers_v;
2301 int match_ipv;
2302
2303 if (ib_spec->type & IB_FLOW_SPEC_INNER) {
2304 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
2305 inner_headers);
2306 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
2307 inner_headers);
2308 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2309 ft_field_support.inner_ip_version);
2310 } else {
2311 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
2312 outer_headers);
2313 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
2314 outer_headers);
2315 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2316 ft_field_support.outer_ip_version);
2317 }
2318
2319 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2320 case IB_FLOW_SPEC_ETH:
2321 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
2322 return -EOPNOTSUPP;
2323
2324 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2325 dmac_47_16),
2326 ib_spec->eth.mask.dst_mac);
2327 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2328 dmac_47_16),
2329 ib_spec->eth.val.dst_mac);
2330
2331 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2332 smac_47_16),
2333 ib_spec->eth.mask.src_mac);
2334 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2335 smac_47_16),
2336 ib_spec->eth.val.src_mac);
2337
2338 if (ib_spec->eth.mask.vlan_tag) {
2339 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2340 cvlan_tag, 1);
2341 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2342 cvlan_tag, 1);
2343
2344 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2345 first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
2346 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2347 first_vid, ntohs(ib_spec->eth.val.vlan_tag));
2348
2349 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2350 first_cfi,
2351 ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
2352 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2353 first_cfi,
2354 ntohs(ib_spec->eth.val.vlan_tag) >> 12);
2355
2356 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2357 first_prio,
2358 ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
2359 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2360 first_prio,
2361 ntohs(ib_spec->eth.val.vlan_tag) >> 13);
2362 }
2363 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2364 ethertype, ntohs(ib_spec->eth.mask.ether_type));
2365 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2366 ethertype, ntohs(ib_spec->eth.val.ether_type));
2367 break;
2368 case IB_FLOW_SPEC_IPV4:
2369 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
2370 return -EOPNOTSUPP;
2371
2372 if (match_ipv) {
2373 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2374 ip_version, 0xf);
2375 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2376 ip_version, IPV4_VERSION);
2377 } else {
2378 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2379 ethertype, 0xffff);
2380 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2381 ethertype, ETH_P_IP);
2382 }
2383
2384 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2385 src_ipv4_src_ipv6.ipv4_layout.ipv4),
2386 &ib_spec->ipv4.mask.src_ip,
2387 sizeof(ib_spec->ipv4.mask.src_ip));
2388 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2389 src_ipv4_src_ipv6.ipv4_layout.ipv4),
2390 &ib_spec->ipv4.val.src_ip,
2391 sizeof(ib_spec->ipv4.val.src_ip));
2392 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2393 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2394 &ib_spec->ipv4.mask.dst_ip,
2395 sizeof(ib_spec->ipv4.mask.dst_ip));
2396 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2397 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2398 &ib_spec->ipv4.val.dst_ip,
2399 sizeof(ib_spec->ipv4.val.dst_ip));
2400
2401 set_tos(headers_c, headers_v,
2402 ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos);
2403
2404 set_proto(headers_c, headers_v,
2405 ib_spec->ipv4.mask.proto, ib_spec->ipv4.val.proto);
2406 break;
2407 case IB_FLOW_SPEC_IPV6:
2408 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD))
2409 return -EOPNOTSUPP;
2410
2411 if (match_ipv) {
2412 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2413 ip_version, 0xf);
2414 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2415 ip_version, IPV6_VERSION);
2416 } else {
2417 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2418 ethertype, 0xffff);
2419 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2420 ethertype, ETH_P_IPV6);
2421 }
2422
2423 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2424 src_ipv4_src_ipv6.ipv6_layout.ipv6),
2425 &ib_spec->ipv6.mask.src_ip,
2426 sizeof(ib_spec->ipv6.mask.src_ip));
2427 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2428 src_ipv4_src_ipv6.ipv6_layout.ipv6),
2429 &ib_spec->ipv6.val.src_ip,
2430 sizeof(ib_spec->ipv6.val.src_ip));
2431 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2432 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2433 &ib_spec->ipv6.mask.dst_ip,
2434 sizeof(ib_spec->ipv6.mask.dst_ip));
2435 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2436 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2437 &ib_spec->ipv6.val.dst_ip,
2438 sizeof(ib_spec->ipv6.val.dst_ip));
2439
2440 set_tos(headers_c, headers_v,
2441 ib_spec->ipv6.mask.traffic_class,
2442 ib_spec->ipv6.val.traffic_class);
2443
2444 set_proto(headers_c, headers_v,
2445 ib_spec->ipv6.mask.next_hdr,
2446 ib_spec->ipv6.val.next_hdr);
2447
2448 set_flow_label(misc_params_c, misc_params_v,
2449 ntohl(ib_spec->ipv6.mask.flow_label),
2450 ntohl(ib_spec->ipv6.val.flow_label),
2451 ib_spec->type & IB_FLOW_SPEC_INNER);
2452
2453 break;
2454 case IB_FLOW_SPEC_TCP:
2455 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
2456 LAST_TCP_UDP_FIELD))
2457 return -EOPNOTSUPP;
2458
2459 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2460 0xff);
2461 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2462 IPPROTO_TCP);
2463
2464 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport,
2465 ntohs(ib_spec->tcp_udp.mask.src_port));
2466 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport,
2467 ntohs(ib_spec->tcp_udp.val.src_port));
2468
2469 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport,
2470 ntohs(ib_spec->tcp_udp.mask.dst_port));
2471 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
2472 ntohs(ib_spec->tcp_udp.val.dst_port));
2473 break;
2474 case IB_FLOW_SPEC_UDP:
2475 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
2476 LAST_TCP_UDP_FIELD))
2477 return -EOPNOTSUPP;
2478
2479 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2480 0xff);
2481 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2482 IPPROTO_UDP);
2483
2484 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport,
2485 ntohs(ib_spec->tcp_udp.mask.src_port));
2486 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport,
2487 ntohs(ib_spec->tcp_udp.val.src_port));
2488
2489 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport,
2490 ntohs(ib_spec->tcp_udp.mask.dst_port));
2491 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
2492 ntohs(ib_spec->tcp_udp.val.dst_port));
2493 break;
2494 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2495 if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask,
2496 LAST_TUNNEL_FIELD))
2497 return -EOPNOTSUPP;
2498
2499 MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni,
2500 ntohl(ib_spec->tunnel.mask.tunnel_id));
2501 MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni,
2502 ntohl(ib_spec->tunnel.val.tunnel_id));
2503 break;
2504 case IB_FLOW_SPEC_ACTION_TAG:
2505 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag,
2506 LAST_FLOW_TAG_FIELD))
2507 return -EOPNOTSUPP;
2508 if (ib_spec->flow_tag.tag_id >= BIT(24))
2509 return -EINVAL;
2510
2511 *tag_id = ib_spec->flow_tag.tag_id;
2512 break;
2513 case IB_FLOW_SPEC_ACTION_DROP:
2514 if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
2515 LAST_DROP_FIELD))
2516 return -EOPNOTSUPP;
2517 *is_drop = true;
2518 break;
2519 default:
2520 return -EINVAL;
2521 }
2522
2523 return 0;
2524 }
2525
2526 /* If a flow could catch both multicast and unicast packets,
2527 * it won't fall into the multicast flow steering table and this rule
2528 * could steal other multicast packets.
2529 */
2530 static bool flow_is_multicast_only(const struct ib_flow_attr *ib_attr)
2531 {
2532 union ib_flow_spec *flow_spec;
2533
2534 if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
2535 ib_attr->num_of_specs < 1)
2536 return false;
2537
2538 flow_spec = (union ib_flow_spec *)(ib_attr + 1);
2539 if (flow_spec->type == IB_FLOW_SPEC_IPV4) {
2540 struct ib_flow_spec_ipv4 *ipv4_spec;
2541
2542 ipv4_spec = (struct ib_flow_spec_ipv4 *)flow_spec;
2543 if (ipv4_is_multicast(ipv4_spec->val.dst_ip))
2544 return true;
2545
2546 return false;
2547 }
2548
2549 if (flow_spec->type == IB_FLOW_SPEC_ETH) {
2550 struct ib_flow_spec_eth *eth_spec;
2551
2552 eth_spec = (struct ib_flow_spec_eth *)flow_spec;
2553 return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
2554 is_multicast_ether_addr(eth_spec->val.dst_mac);
2555 }
2556
2557 return false;
2558 }
2559
2560 static bool is_valid_ethertype(struct mlx5_core_dev *mdev,
2561 const struct ib_flow_attr *flow_attr,
2562 bool check_inner)
2563 {
2564 union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
2565 int match_ipv = check_inner ?
2566 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2567 ft_field_support.inner_ip_version) :
2568 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2569 ft_field_support.outer_ip_version);
2570 int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0;
2571 bool ipv4_spec_valid, ipv6_spec_valid;
2572 unsigned int ip_spec_type = 0;
2573 bool has_ethertype = false;
2574 unsigned int spec_index;
2575 bool mask_valid = true;
2576 u16 eth_type = 0;
2577 bool type_valid;
2578
2579 /* Validate that ethertype is correct */
2580 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
2581 if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) &&
2582 ib_spec->eth.mask.ether_type) {
2583 mask_valid = (ib_spec->eth.mask.ether_type ==
2584 htons(0xffff));
2585 has_ethertype = true;
2586 eth_type = ntohs(ib_spec->eth.val.ether_type);
2587 } else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) ||
2588 (ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) {
2589 ip_spec_type = ib_spec->type;
2590 }
2591 ib_spec = (void *)ib_spec + ib_spec->size;
2592 }
2593
2594 type_valid = (!has_ethertype) || (!ip_spec_type);
2595 if (!type_valid && mask_valid) {
2596 ipv4_spec_valid = (eth_type == ETH_P_IP) &&
2597 (ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit));
2598 ipv6_spec_valid = (eth_type == ETH_P_IPV6) &&
2599 (ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit));
2600
2601 type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) ||
2602 (((eth_type == ETH_P_MPLS_UC) ||
2603 (eth_type == ETH_P_MPLS_MC)) && match_ipv);
2604 }
2605
2606 return type_valid;
2607 }
2608
2609 static bool is_valid_attr(struct mlx5_core_dev *mdev,
2610 const struct ib_flow_attr *flow_attr)
2611 {
2612 return is_valid_ethertype(mdev, flow_attr, false) &&
2613 is_valid_ethertype(mdev, flow_attr, true);
2614 }
2615
2616 static void put_flow_table(struct mlx5_ib_dev *dev,
2617 struct mlx5_ib_flow_prio *prio, bool ft_added)
2618 {
2619 prio->refcount -= !!ft_added;
2620 if (!prio->refcount) {
2621 mlx5_destroy_flow_table(prio->flow_table);
2622 prio->flow_table = NULL;
2623 }
2624 }
2625
2626 static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
2627 {
2628 struct mlx5_ib_dev *dev = to_mdev(flow_id->qp->device);
2629 struct mlx5_ib_flow_handler *handler = container_of(flow_id,
2630 struct mlx5_ib_flow_handler,
2631 ibflow);
2632 struct mlx5_ib_flow_handler *iter, *tmp;
2633
2634 mutex_lock(&dev->flow_db.lock);
2635
2636 list_for_each_entry_safe(iter, tmp, &handler->list, list) {
2637 mlx5_del_flow_rules(iter->rule);
2638 put_flow_table(dev, iter->prio, true);
2639 list_del(&iter->list);
2640 kfree(iter);
2641 }
2642
2643 mlx5_del_flow_rules(handler->rule);
2644 put_flow_table(dev, handler->prio, true);
2645 mutex_unlock(&dev->flow_db.lock);
2646
2647 kfree(handler);
2648
2649 return 0;
2650 }
2651
2652 static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
2653 {
2654 priority *= 2;
2655 if (!dont_trap)
2656 priority++;
2657 return priority;
2658 }
2659
2660 enum flow_table_type {
2661 MLX5_IB_FT_RX,
2662 MLX5_IB_FT_TX
2663 };
2664
2665 #define MLX5_FS_MAX_TYPES 6
2666 #define MLX5_FS_MAX_ENTRIES BIT(16)
2667 static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
2668 struct ib_flow_attr *flow_attr,
2669 enum flow_table_type ft_type)
2670 {
2671 bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
2672 struct mlx5_flow_namespace *ns = NULL;
2673 struct mlx5_ib_flow_prio *prio;
2674 struct mlx5_flow_table *ft;
2675 int max_table_size;
2676 int num_entries;
2677 int num_groups;
2678 int priority;
2679 int err = 0;
2680
2681 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
2682 log_max_ft_size));
2683 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
2684 if (flow_is_multicast_only(flow_attr) &&
2685 !dont_trap)
2686 priority = MLX5_IB_FLOW_MCAST_PRIO;
2687 else
2688 priority = ib_prio_to_core_prio(flow_attr->priority,
2689 dont_trap);
2690 ns = mlx5_get_flow_namespace(dev->mdev,
2691 MLX5_FLOW_NAMESPACE_BYPASS);
2692 num_entries = MLX5_FS_MAX_ENTRIES;
2693 num_groups = MLX5_FS_MAX_TYPES;
2694 prio = &dev->flow_db.prios[priority];
2695 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
2696 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
2697 ns = mlx5_get_flow_namespace(dev->mdev,
2698 MLX5_FLOW_NAMESPACE_LEFTOVERS);
2699 build_leftovers_ft_param(&priority,
2700 &num_entries,
2701 &num_groups);
2702 prio = &dev->flow_db.prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
2703 } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
2704 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
2705 allow_sniffer_and_nic_rx_shared_tir))
2706 return ERR_PTR(-ENOTSUPP);
2707
2708 ns = mlx5_get_flow_namespace(dev->mdev, ft_type == MLX5_IB_FT_RX ?
2709 MLX5_FLOW_NAMESPACE_SNIFFER_RX :
2710 MLX5_FLOW_NAMESPACE_SNIFFER_TX);
2711
2712 prio = &dev->flow_db.sniffer[ft_type];
2713 priority = 0;
2714 num_entries = 1;
2715 num_groups = 1;
2716 }
2717
2718 if (!ns)
2719 return ERR_PTR(-ENOTSUPP);
2720
2721 if (num_entries > max_table_size)
2722 return ERR_PTR(-ENOMEM);
2723
2724 ft = prio->flow_table;
2725 if (!ft) {
2726 ft = mlx5_create_auto_grouped_flow_table(ns, priority,
2727 num_entries,
2728 num_groups,
2729 0, 0);
2730
2731 if (!IS_ERR(ft)) {
2732 prio->refcount = 0;
2733 prio->flow_table = ft;
2734 } else {
2735 err = PTR_ERR(ft);
2736 }
2737 }
2738
2739 return err ? ERR_PTR(err) : prio;
2740 }
2741
2742 static void set_underlay_qp(struct mlx5_ib_dev *dev,
2743 struct mlx5_flow_spec *spec,
2744 u32 underlay_qpn)
2745 {
2746 void *misc_params_c = MLX5_ADDR_OF(fte_match_param,
2747 spec->match_criteria,
2748 misc_parameters);
2749 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
2750 misc_parameters);
2751
2752 if (underlay_qpn &&
2753 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
2754 ft_field_support.bth_dst_qp)) {
2755 MLX5_SET(fte_match_set_misc,
2756 misc_params_v, bth_dst_qp, underlay_qpn);
2757 MLX5_SET(fte_match_set_misc,
2758 misc_params_c, bth_dst_qp, 0xffffff);
2759 }
2760 }
2761
2762 static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
2763 struct mlx5_ib_flow_prio *ft_prio,
2764 const struct ib_flow_attr *flow_attr,
2765 struct mlx5_flow_destination *dst,
2766 u32 underlay_qpn)
2767 {
2768 struct mlx5_flow_table *ft = ft_prio->flow_table;
2769 struct mlx5_ib_flow_handler *handler;
2770 struct mlx5_flow_act flow_act = {0};
2771 struct mlx5_flow_spec *spec;
2772 struct mlx5_flow_destination *rule_dst = dst;
2773 const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
2774 unsigned int spec_index;
2775 u32 flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
2776 bool is_drop = false;
2777 int err = 0;
2778 int dest_num = 1;
2779
2780 if (!is_valid_attr(dev->mdev, flow_attr))
2781 return ERR_PTR(-EINVAL);
2782
2783 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
2784 handler = kzalloc(sizeof(*handler), GFP_KERNEL);
2785 if (!handler || !spec) {
2786 err = -ENOMEM;
2787 goto free;
2788 }
2789
2790 INIT_LIST_HEAD(&handler->list);
2791
2792 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
2793 err = parse_flow_attr(dev->mdev, spec->match_criteria,
2794 spec->match_value,
2795 ib_flow, &flow_tag, &is_drop);
2796 if (err < 0)
2797 goto free;
2798
2799 ib_flow += ((union ib_flow_spec *)ib_flow)->size;
2800 }
2801
2802 if (!flow_is_multicast_only(flow_attr))
2803 set_underlay_qp(dev, spec, underlay_qpn);
2804
2805 spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
2806 if (is_drop) {
2807 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
2808 rule_dst = NULL;
2809 dest_num = 0;
2810 } else {
2811 flow_act.action = dst ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST :
2812 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
2813 }
2814
2815 if (flow_tag != MLX5_FS_DEFAULT_FLOW_TAG &&
2816 (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
2817 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
2818 mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n",
2819 flow_tag, flow_attr->type);
2820 err = -EINVAL;
2821 goto free;
2822 }
2823 flow_act.flow_tag = flow_tag;
2824 handler->rule = mlx5_add_flow_rules(ft, spec,
2825 &flow_act,
2826 rule_dst, dest_num);
2827
2828 if (IS_ERR(handler->rule)) {
2829 err = PTR_ERR(handler->rule);
2830 goto free;
2831 }
2832
2833 ft_prio->refcount++;
2834 handler->prio = ft_prio;
2835
2836 ft_prio->flow_table = ft;
2837 free:
2838 if (err)
2839 kfree(handler);
2840 kvfree(spec);
2841 return err ? ERR_PTR(err) : handler;
2842 }
2843
2844 static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
2845 struct mlx5_ib_flow_prio *ft_prio,
2846 const struct ib_flow_attr *flow_attr,
2847 struct mlx5_flow_destination *dst)
2848 {
2849 return _create_flow_rule(dev, ft_prio, flow_attr, dst, 0);
2850 }
2851
2852 static struct mlx5_ib_flow_handler *create_dont_trap_rule(struct mlx5_ib_dev *dev,
2853 struct mlx5_ib_flow_prio *ft_prio,
2854 struct ib_flow_attr *flow_attr,
2855 struct mlx5_flow_destination *dst)
2856 {
2857 struct mlx5_ib_flow_handler *handler_dst = NULL;
2858 struct mlx5_ib_flow_handler *handler = NULL;
2859
2860 handler = create_flow_rule(dev, ft_prio, flow_attr, NULL);
2861 if (!IS_ERR(handler)) {
2862 handler_dst = create_flow_rule(dev, ft_prio,
2863 flow_attr, dst);
2864 if (IS_ERR(handler_dst)) {
2865 mlx5_del_flow_rules(handler->rule);
2866 ft_prio->refcount--;
2867 kfree(handler);
2868 handler = handler_dst;
2869 } else {
2870 list_add(&handler_dst->list, &handler->list);
2871 }
2872 }
2873
2874 return handler;
2875 }
2876 enum {
2877 LEFTOVERS_MC,
2878 LEFTOVERS_UC,
2879 };
2880
2881 static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
2882 struct mlx5_ib_flow_prio *ft_prio,
2883 struct ib_flow_attr *flow_attr,
2884 struct mlx5_flow_destination *dst)
2885 {
2886 struct mlx5_ib_flow_handler *handler_ucast = NULL;
2887 struct mlx5_ib_flow_handler *handler = NULL;
2888
2889 static struct {
2890 struct ib_flow_attr flow_attr;
2891 struct ib_flow_spec_eth eth_flow;
2892 } leftovers_specs[] = {
2893 [LEFTOVERS_MC] = {
2894 .flow_attr = {
2895 .num_of_specs = 1,
2896 .size = sizeof(leftovers_specs[0])
2897 },
2898 .eth_flow = {
2899 .type = IB_FLOW_SPEC_ETH,
2900 .size = sizeof(struct ib_flow_spec_eth),
2901 .mask = {.dst_mac = {0x1} },
2902 .val = {.dst_mac = {0x1} }
2903 }
2904 },
2905 [LEFTOVERS_UC] = {
2906 .flow_attr = {
2907 .num_of_specs = 1,
2908 .size = sizeof(leftovers_specs[0])
2909 },
2910 .eth_flow = {
2911 .type = IB_FLOW_SPEC_ETH,
2912 .size = sizeof(struct ib_flow_spec_eth),
2913 .mask = {.dst_mac = {0x1} },
2914 .val = {.dst_mac = {} }
2915 }
2916 }
2917 };
2918
2919 handler = create_flow_rule(dev, ft_prio,
2920 &leftovers_specs[LEFTOVERS_MC].flow_attr,
2921 dst);
2922 if (!IS_ERR(handler) &&
2923 flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
2924 handler_ucast = create_flow_rule(dev, ft_prio,
2925 &leftovers_specs[LEFTOVERS_UC].flow_attr,
2926 dst);
2927 if (IS_ERR(handler_ucast)) {
2928 mlx5_del_flow_rules(handler->rule);
2929 ft_prio->refcount--;
2930 kfree(handler);
2931 handler = handler_ucast;
2932 } else {
2933 list_add(&handler_ucast->list, &handler->list);
2934 }
2935 }
2936
2937 return handler;
2938 }
2939
2940 static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev,
2941 struct mlx5_ib_flow_prio *ft_rx,
2942 struct mlx5_ib_flow_prio *ft_tx,
2943 struct mlx5_flow_destination *dst)
2944 {
2945 struct mlx5_ib_flow_handler *handler_rx;
2946 struct mlx5_ib_flow_handler *handler_tx;
2947 int err;
2948 static const struct ib_flow_attr flow_attr = {
2949 .num_of_specs = 0,
2950 .size = sizeof(flow_attr)
2951 };
2952
2953 handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst);
2954 if (IS_ERR(handler_rx)) {
2955 err = PTR_ERR(handler_rx);
2956 goto err;
2957 }
2958
2959 handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst);
2960 if (IS_ERR(handler_tx)) {
2961 err = PTR_ERR(handler_tx);
2962 goto err_tx;
2963 }
2964
2965 list_add(&handler_tx->list, &handler_rx->list);
2966
2967 return handler_rx;
2968
2969 err_tx:
2970 mlx5_del_flow_rules(handler_rx->rule);
2971 ft_rx->refcount--;
2972 kfree(handler_rx);
2973 err:
2974 return ERR_PTR(err);
2975 }
2976
2977 static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
2978 struct ib_flow_attr *flow_attr,
2979 int domain)
2980 {
2981 struct mlx5_ib_dev *dev = to_mdev(qp->device);
2982 struct mlx5_ib_qp *mqp = to_mqp(qp);
2983 struct mlx5_ib_flow_handler *handler = NULL;
2984 struct mlx5_flow_destination *dst = NULL;
2985 struct mlx5_ib_flow_prio *ft_prio_tx = NULL;
2986 struct mlx5_ib_flow_prio *ft_prio;
2987 int err;
2988 int underlay_qpn;
2989
2990 if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO)
2991 return ERR_PTR(-ENOMEM);
2992
2993 if (domain != IB_FLOW_DOMAIN_USER ||
2994 flow_attr->port > dev->num_ports ||
2995 (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP))
2996 return ERR_PTR(-EINVAL);
2997
2998 dst = kzalloc(sizeof(*dst), GFP_KERNEL);
2999 if (!dst)
3000 return ERR_PTR(-ENOMEM);
3001
3002 mutex_lock(&dev->flow_db.lock);
3003
3004 ft_prio = get_flow_table(dev, flow_attr, MLX5_IB_FT_RX);
3005 if (IS_ERR(ft_prio)) {
3006 err = PTR_ERR(ft_prio);
3007 goto unlock;
3008 }
3009 if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
3010 ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX);
3011 if (IS_ERR(ft_prio_tx)) {
3012 err = PTR_ERR(ft_prio_tx);
3013 ft_prio_tx = NULL;
3014 goto destroy_ft;
3015 }
3016 }
3017
3018 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
3019 if (mqp->flags & MLX5_IB_QP_RSS)
3020 dst->tir_num = mqp->rss_qp.tirn;
3021 else
3022 dst->tir_num = mqp->raw_packet_qp.rq.tirn;
3023
3024 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
3025 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) {
3026 handler = create_dont_trap_rule(dev, ft_prio,
3027 flow_attr, dst);
3028 } else {
3029 underlay_qpn = (mqp->flags & MLX5_IB_QP_UNDERLAY) ?
3030 mqp->underlay_qpn : 0;
3031 handler = _create_flow_rule(dev, ft_prio, flow_attr,
3032 dst, underlay_qpn);
3033 }
3034 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
3035 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
3036 handler = create_leftovers_rule(dev, ft_prio, flow_attr,
3037 dst);
3038 } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
3039 handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst);
3040 } else {
3041 err = -EINVAL;
3042 goto destroy_ft;
3043 }
3044
3045 if (IS_ERR(handler)) {
3046 err = PTR_ERR(handler);
3047 handler = NULL;
3048 goto destroy_ft;
3049 }
3050
3051 mutex_unlock(&dev->flow_db.lock);
3052 kfree(dst);
3053
3054 return &handler->ibflow;
3055
3056 destroy_ft:
3057 put_flow_table(dev, ft_prio, false);
3058 if (ft_prio_tx)
3059 put_flow_table(dev, ft_prio_tx, false);
3060 unlock:
3061 mutex_unlock(&dev->flow_db.lock);
3062 kfree(dst);
3063 kfree(handler);
3064 return ERR_PTR(err);
3065 }
3066
3067 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3068 {
3069 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3070 struct mlx5_ib_qp *mqp = to_mqp(ibqp);
3071 int err;
3072
3073 if (mqp->flags & MLX5_IB_QP_UNDERLAY) {
3074 mlx5_ib_dbg(dev, "Attaching a multi cast group to underlay QP is not supported\n");
3075 return -EOPNOTSUPP;
3076 }
3077
3078 err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num);
3079 if (err)
3080 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
3081 ibqp->qp_num, gid->raw);
3082
3083 return err;
3084 }
3085
3086 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3087 {
3088 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3089 int err;
3090
3091 err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num);
3092 if (err)
3093 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
3094 ibqp->qp_num, gid->raw);
3095
3096 return err;
3097 }
3098
3099 static int init_node_data(struct mlx5_ib_dev *dev)
3100 {
3101 int err;
3102
3103 err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc);
3104 if (err)
3105 return err;
3106
3107 dev->mdev->rev_id = dev->mdev->pdev->revision;
3108
3109 return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid);
3110 }
3111
3112 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
3113 char *buf)
3114 {
3115 struct mlx5_ib_dev *dev =
3116 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
3117
3118 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages);
3119 }
3120
3121 static ssize_t show_reg_pages(struct device *device,
3122 struct device_attribute *attr, char *buf)
3123 {
3124 struct mlx5_ib_dev *dev =
3125 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
3126
3127 return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages));
3128 }
3129
3130 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
3131 char *buf)
3132 {
3133 struct mlx5_ib_dev *dev =
3134 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
3135 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
3136 }
3137
3138 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
3139 char *buf)
3140 {
3141 struct mlx5_ib_dev *dev =
3142 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
3143 return sprintf(buf, "%x\n", dev->mdev->rev_id);
3144 }
3145
3146 static ssize_t show_board(struct device *device, struct device_attribute *attr,
3147 char *buf)
3148 {
3149 struct mlx5_ib_dev *dev =
3150 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
3151 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
3152 dev->mdev->board_id);
3153 }
3154
3155 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
3156 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
3157 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
3158 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
3159 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
3160
3161 static struct device_attribute *mlx5_class_attributes[] = {
3162 &dev_attr_hw_rev,
3163 &dev_attr_hca_type,
3164 &dev_attr_board_id,
3165 &dev_attr_fw_pages,
3166 &dev_attr_reg_pages,
3167 };
3168
3169 static void pkey_change_handler(struct work_struct *work)
3170 {
3171 struct mlx5_ib_port_resources *ports =
3172 container_of(work, struct mlx5_ib_port_resources,
3173 pkey_change_work);
3174
3175 mutex_lock(&ports->devr->mutex);
3176 mlx5_ib_gsi_pkey_change(ports->gsi);
3177 mutex_unlock(&ports->devr->mutex);
3178 }
3179
3180 static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev)
3181 {
3182 struct mlx5_ib_qp *mqp;
3183 struct mlx5_ib_cq *send_mcq, *recv_mcq;
3184 struct mlx5_core_cq *mcq;
3185 struct list_head cq_armed_list;
3186 unsigned long flags_qp;
3187 unsigned long flags_cq;
3188 unsigned long flags;
3189
3190 INIT_LIST_HEAD(&cq_armed_list);
3191
3192 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3193 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3194 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3195 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3196 if (mqp->sq.tail != mqp->sq.head) {
3197 send_mcq = to_mcq(mqp->ibqp.send_cq);
3198 spin_lock_irqsave(&send_mcq->lock, flags_cq);
3199 if (send_mcq->mcq.comp &&
3200 mqp->ibqp.send_cq->comp_handler) {
3201 if (!send_mcq->mcq.reset_notify_added) {
3202 send_mcq->mcq.reset_notify_added = 1;
3203 list_add_tail(&send_mcq->mcq.reset_notify,
3204 &cq_armed_list);
3205 }
3206 }
3207 spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3208 }
3209 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3210 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3211 /* no handling is needed for SRQ */
3212 if (!mqp->ibqp.srq) {
3213 if (mqp->rq.tail != mqp->rq.head) {
3214 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3215 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3216 if (recv_mcq->mcq.comp &&
3217 mqp->ibqp.recv_cq->comp_handler) {
3218 if (!recv_mcq->mcq.reset_notify_added) {
3219 recv_mcq->mcq.reset_notify_added = 1;
3220 list_add_tail(&recv_mcq->mcq.reset_notify,
3221 &cq_armed_list);
3222 }
3223 }
3224 spin_unlock_irqrestore(&recv_mcq->lock,
3225 flags_cq);
3226 }
3227 }
3228 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3229 }
3230 /*At that point all inflight post send were put to be executed as of we
3231 * lock/unlock above locks Now need to arm all involved CQs.
3232 */
3233 list_for_each_entry(mcq, &cq_armed_list, reset_notify) {
3234 mcq->comp(mcq);
3235 }
3236 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3237 }
3238
3239 static void delay_drop_handler(struct work_struct *work)
3240 {
3241 int err;
3242 struct mlx5_ib_delay_drop *delay_drop =
3243 container_of(work, struct mlx5_ib_delay_drop,
3244 delay_drop_work);
3245
3246 atomic_inc(&delay_drop->events_cnt);
3247
3248 mutex_lock(&delay_drop->lock);
3249 err = mlx5_core_set_delay_drop(delay_drop->dev->mdev,
3250 delay_drop->timeout);
3251 if (err) {
3252 mlx5_ib_warn(delay_drop->dev, "Failed to set delay drop, timeout=%u\n",
3253 delay_drop->timeout);
3254 delay_drop->activate = false;
3255 }
3256 mutex_unlock(&delay_drop->lock);
3257 }
3258
3259 static void mlx5_ib_handle_event(struct work_struct *_work)
3260 {
3261 struct mlx5_ib_event_work *work =
3262 container_of(_work, struct mlx5_ib_event_work, work);
3263 struct mlx5_ib_dev *ibdev;
3264 struct ib_event ibev;
3265 bool fatal = false;
3266 u8 port = 0;
3267
3268 if (mlx5_core_is_mp_slave(work->dev)) {
3269 ibdev = mlx5_ib_get_ibdev_from_mpi(work->context);
3270 if (!ibdev)
3271 goto out;
3272 } else {
3273 ibdev = work->context;
3274 }
3275
3276 switch (work->event) {
3277 case MLX5_DEV_EVENT_SYS_ERROR:
3278 ibev.event = IB_EVENT_DEVICE_FATAL;
3279 mlx5_ib_handle_internal_error(ibdev);
3280 fatal = true;
3281 break;
3282
3283 case MLX5_DEV_EVENT_PORT_UP:
3284 case MLX5_DEV_EVENT_PORT_DOWN:
3285 case MLX5_DEV_EVENT_PORT_INITIALIZED:
3286 port = (u8)work->param;
3287
3288 /* In RoCE, port up/down events are handled in
3289 * mlx5_netdev_event().
3290 */
3291 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) ==
3292 IB_LINK_LAYER_ETHERNET)
3293 goto out;
3294
3295 ibev.event = (work->event == MLX5_DEV_EVENT_PORT_UP) ?
3296 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3297 break;
3298
3299 case MLX5_DEV_EVENT_LID_CHANGE:
3300 ibev.event = IB_EVENT_LID_CHANGE;
3301 port = (u8)work->param;
3302 break;
3303
3304 case MLX5_DEV_EVENT_PKEY_CHANGE:
3305 ibev.event = IB_EVENT_PKEY_CHANGE;
3306 port = (u8)work->param;
3307
3308 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work);
3309 break;
3310
3311 case MLX5_DEV_EVENT_GUID_CHANGE:
3312 ibev.event = IB_EVENT_GID_CHANGE;
3313 port = (u8)work->param;
3314 break;
3315
3316 case MLX5_DEV_EVENT_CLIENT_REREG:
3317 ibev.event = IB_EVENT_CLIENT_REREGISTER;
3318 port = (u8)work->param;
3319 break;
3320 case MLX5_DEV_EVENT_DELAY_DROP_TIMEOUT:
3321 schedule_work(&ibdev->delay_drop.delay_drop_work);
3322 goto out;
3323 default:
3324 goto out;
3325 }
3326
3327 ibev.device = &ibdev->ib_dev;
3328 ibev.element.port_num = port;
3329
3330 if (port < 1 || port > ibdev->num_ports) {
3331 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
3332 goto out;
3333 }
3334
3335 if (ibdev->ib_active)
3336 ib_dispatch_event(&ibev);
3337
3338 if (fatal)
3339 ibdev->ib_active = false;
3340 out:
3341 kfree(work);
3342 }
3343
3344 static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
3345 enum mlx5_dev_event event, unsigned long param)
3346 {
3347 struct mlx5_ib_event_work *work;
3348
3349 work = kmalloc(sizeof(*work), GFP_ATOMIC);
3350 if (!work)
3351 return;
3352
3353 INIT_WORK(&work->work, mlx5_ib_handle_event);
3354 work->dev = dev;
3355 work->param = param;
3356 work->context = context;
3357 work->event = event;
3358
3359 queue_work(mlx5_ib_event_wq, &work->work);
3360 }
3361
3362 static int set_has_smi_cap(struct mlx5_ib_dev *dev)
3363 {
3364 struct mlx5_hca_vport_context vport_ctx;
3365 int err;
3366 int port;
3367
3368 for (port = 1; port <= dev->num_ports; port++) {
3369 dev->mdev->port_caps[port - 1].has_smi = false;
3370 if (MLX5_CAP_GEN(dev->mdev, port_type) ==
3371 MLX5_CAP_PORT_TYPE_IB) {
3372 if (MLX5_CAP_GEN(dev->mdev, ib_virt)) {
3373 err = mlx5_query_hca_vport_context(dev->mdev, 0,
3374 port, 0,
3375 &vport_ctx);
3376 if (err) {
3377 mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n",
3378 port, err);
3379 return err;
3380 }
3381 dev->mdev->port_caps[port - 1].has_smi =
3382 vport_ctx.has_smi;
3383 } else {
3384 dev->mdev->port_caps[port - 1].has_smi = true;
3385 }
3386 }
3387 }
3388 return 0;
3389 }
3390
3391 static void get_ext_port_caps(struct mlx5_ib_dev *dev)
3392 {
3393 int port;
3394
3395 for (port = 1; port <= dev->num_ports; port++)
3396 mlx5_query_ext_port_caps(dev, port);
3397 }
3398
3399 static int get_port_caps(struct mlx5_ib_dev *dev, u8 port)
3400 {
3401 struct ib_device_attr *dprops = NULL;
3402 struct ib_port_attr *pprops = NULL;
3403 int err = -ENOMEM;
3404 struct ib_udata uhw = {.inlen = 0, .outlen = 0};
3405
3406 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
3407 if (!pprops)
3408 goto out;
3409
3410 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
3411 if (!dprops)
3412 goto out;
3413
3414 err = set_has_smi_cap(dev);
3415 if (err)
3416 goto out;
3417
3418 err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw);
3419 if (err) {
3420 mlx5_ib_warn(dev, "query_device failed %d\n", err);
3421 goto out;
3422 }
3423
3424 memset(pprops, 0, sizeof(*pprops));
3425 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
3426 if (err) {
3427 mlx5_ib_warn(dev, "query_port %d failed %d\n",
3428 port, err);
3429 goto out;
3430 }
3431
3432 dev->mdev->port_caps[port - 1].pkey_table_len =
3433 dprops->max_pkeys;
3434 dev->mdev->port_caps[port - 1].gid_table_len =
3435 pprops->gid_tbl_len;
3436 mlx5_ib_dbg(dev, "port %d: pkey_table_len %d, gid_table_len %d\n",
3437 port, dprops->max_pkeys, pprops->gid_tbl_len);
3438
3439 out:
3440 kfree(pprops);
3441 kfree(dprops);
3442
3443 return err;
3444 }
3445
3446 static void destroy_umrc_res(struct mlx5_ib_dev *dev)
3447 {
3448 int err;
3449
3450 err = mlx5_mr_cache_cleanup(dev);
3451 if (err)
3452 mlx5_ib_warn(dev, "mr cache cleanup failed\n");
3453
3454 mlx5_ib_destroy_qp(dev->umrc.qp);
3455 ib_free_cq(dev->umrc.cq);
3456 ib_dealloc_pd(dev->umrc.pd);
3457 }
3458
3459 enum {
3460 MAX_UMR_WR = 128,
3461 };
3462
3463 static int create_umr_res(struct mlx5_ib_dev *dev)
3464 {
3465 struct ib_qp_init_attr *init_attr = NULL;
3466 struct ib_qp_attr *attr = NULL;
3467 struct ib_pd *pd;
3468 struct ib_cq *cq;
3469 struct ib_qp *qp;
3470 int ret;
3471
3472 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
3473 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
3474 if (!attr || !init_attr) {
3475 ret = -ENOMEM;
3476 goto error_0;
3477 }
3478
3479 pd = ib_alloc_pd(&dev->ib_dev, 0);
3480 if (IS_ERR(pd)) {
3481 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
3482 ret = PTR_ERR(pd);
3483 goto error_0;
3484 }
3485
3486 cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ);
3487 if (IS_ERR(cq)) {
3488 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
3489 ret = PTR_ERR(cq);
3490 goto error_2;
3491 }
3492
3493 init_attr->send_cq = cq;
3494 init_attr->recv_cq = cq;
3495 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
3496 init_attr->cap.max_send_wr = MAX_UMR_WR;
3497 init_attr->cap.max_send_sge = 1;
3498 init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
3499 init_attr->port_num = 1;
3500 qp = mlx5_ib_create_qp(pd, init_attr, NULL);
3501 if (IS_ERR(qp)) {
3502 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
3503 ret = PTR_ERR(qp);
3504 goto error_3;
3505 }
3506 qp->device = &dev->ib_dev;
3507 qp->real_qp = qp;
3508 qp->uobject = NULL;
3509 qp->qp_type = MLX5_IB_QPT_REG_UMR;
3510 qp->send_cq = init_attr->send_cq;
3511 qp->recv_cq = init_attr->recv_cq;
3512
3513 attr->qp_state = IB_QPS_INIT;
3514 attr->port_num = 1;
3515 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
3516 IB_QP_PORT, NULL);
3517 if (ret) {
3518 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
3519 goto error_4;
3520 }
3521
3522 memset(attr, 0, sizeof(*attr));
3523 attr->qp_state = IB_QPS_RTR;
3524 attr->path_mtu = IB_MTU_256;
3525
3526 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
3527 if (ret) {
3528 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
3529 goto error_4;
3530 }
3531
3532 memset(attr, 0, sizeof(*attr));
3533 attr->qp_state = IB_QPS_RTS;
3534 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
3535 if (ret) {
3536 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
3537 goto error_4;
3538 }
3539
3540 dev->umrc.qp = qp;
3541 dev->umrc.cq = cq;
3542 dev->umrc.pd = pd;
3543
3544 sema_init(&dev->umrc.sem, MAX_UMR_WR);
3545 ret = mlx5_mr_cache_init(dev);
3546 if (ret) {
3547 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
3548 goto error_4;
3549 }
3550
3551 kfree(attr);
3552 kfree(init_attr);
3553
3554 return 0;
3555
3556 error_4:
3557 mlx5_ib_destroy_qp(qp);
3558
3559 error_3:
3560 ib_free_cq(cq);
3561
3562 error_2:
3563 ib_dealloc_pd(pd);
3564
3565 error_0:
3566 kfree(attr);
3567 kfree(init_attr);
3568 return ret;
3569 }
3570
3571 static u8 mlx5_get_umr_fence(u8 umr_fence_cap)
3572 {
3573 switch (umr_fence_cap) {
3574 case MLX5_CAP_UMR_FENCE_NONE:
3575 return MLX5_FENCE_MODE_NONE;
3576 case MLX5_CAP_UMR_FENCE_SMALL:
3577 return MLX5_FENCE_MODE_INITIATOR_SMALL;
3578 default:
3579 return MLX5_FENCE_MODE_STRONG_ORDERING;
3580 }
3581 }
3582
3583 static int create_dev_resources(struct mlx5_ib_resources *devr)
3584 {
3585 struct ib_srq_init_attr attr;
3586 struct mlx5_ib_dev *dev;
3587 struct ib_cq_init_attr cq_attr = {.cqe = 1};
3588 int port;
3589 int ret = 0;
3590
3591 dev = container_of(devr, struct mlx5_ib_dev, devr);
3592
3593 mutex_init(&devr->mutex);
3594
3595 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
3596 if (IS_ERR(devr->p0)) {
3597 ret = PTR_ERR(devr->p0);
3598 goto error0;
3599 }
3600 devr->p0->device = &dev->ib_dev;
3601 devr->p0->uobject = NULL;
3602 atomic_set(&devr->p0->usecnt, 0);
3603
3604 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, &cq_attr, NULL, NULL);
3605 if (IS_ERR(devr->c0)) {
3606 ret = PTR_ERR(devr->c0);
3607 goto error1;
3608 }
3609 devr->c0->device = &dev->ib_dev;
3610 devr->c0->uobject = NULL;
3611 devr->c0->comp_handler = NULL;
3612 devr->c0->event_handler = NULL;
3613 devr->c0->cq_context = NULL;
3614 atomic_set(&devr->c0->usecnt, 0);
3615
3616 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
3617 if (IS_ERR(devr->x0)) {
3618 ret = PTR_ERR(devr->x0);
3619 goto error2;
3620 }
3621 devr->x0->device = &dev->ib_dev;
3622 devr->x0->inode = NULL;
3623 atomic_set(&devr->x0->usecnt, 0);
3624 mutex_init(&devr->x0->tgt_qp_mutex);
3625 INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
3626
3627 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
3628 if (IS_ERR(devr->x1)) {
3629 ret = PTR_ERR(devr->x1);
3630 goto error3;
3631 }
3632 devr->x1->device = &dev->ib_dev;
3633 devr->x1->inode = NULL;
3634 atomic_set(&devr->x1->usecnt, 0);
3635 mutex_init(&devr->x1->tgt_qp_mutex);
3636 INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
3637
3638 memset(&attr, 0, sizeof(attr));
3639 attr.attr.max_sge = 1;
3640 attr.attr.max_wr = 1;
3641 attr.srq_type = IB_SRQT_XRC;
3642 attr.ext.cq = devr->c0;
3643 attr.ext.xrc.xrcd = devr->x0;
3644
3645 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
3646 if (IS_ERR(devr->s0)) {
3647 ret = PTR_ERR(devr->s0);
3648 goto error4;
3649 }
3650 devr->s0->device = &dev->ib_dev;
3651 devr->s0->pd = devr->p0;
3652 devr->s0->uobject = NULL;
3653 devr->s0->event_handler = NULL;
3654 devr->s0->srq_context = NULL;
3655 devr->s0->srq_type = IB_SRQT_XRC;
3656 devr->s0->ext.xrc.xrcd = devr->x0;
3657 devr->s0->ext.cq = devr->c0;
3658 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
3659 atomic_inc(&devr->s0->ext.cq->usecnt);
3660 atomic_inc(&devr->p0->usecnt);
3661 atomic_set(&devr->s0->usecnt, 0);
3662
3663 memset(&attr, 0, sizeof(attr));
3664 attr.attr.max_sge = 1;
3665 attr.attr.max_wr = 1;
3666 attr.srq_type = IB_SRQT_BASIC;
3667 devr->s1 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
3668 if (IS_ERR(devr->s1)) {
3669 ret = PTR_ERR(devr->s1);
3670 goto error5;
3671 }
3672 devr->s1->device = &dev->ib_dev;
3673 devr->s1->pd = devr->p0;
3674 devr->s1->uobject = NULL;
3675 devr->s1->event_handler = NULL;
3676 devr->s1->srq_context = NULL;
3677 devr->s1->srq_type = IB_SRQT_BASIC;
3678 devr->s1->ext.cq = devr->c0;
3679 atomic_inc(&devr->p0->usecnt);
3680 atomic_set(&devr->s1->usecnt, 0);
3681
3682 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) {
3683 INIT_WORK(&devr->ports[port].pkey_change_work,
3684 pkey_change_handler);
3685 devr->ports[port].devr = devr;
3686 }
3687
3688 return 0;
3689
3690 error5:
3691 mlx5_ib_destroy_srq(devr->s0);
3692 error4:
3693 mlx5_ib_dealloc_xrcd(devr->x1);
3694 error3:
3695 mlx5_ib_dealloc_xrcd(devr->x0);
3696 error2:
3697 mlx5_ib_destroy_cq(devr->c0);
3698 error1:
3699 mlx5_ib_dealloc_pd(devr->p0);
3700 error0:
3701 return ret;
3702 }
3703
3704 static void destroy_dev_resources(struct mlx5_ib_resources *devr)
3705 {
3706 struct mlx5_ib_dev *dev =
3707 container_of(devr, struct mlx5_ib_dev, devr);
3708 int port;
3709
3710 mlx5_ib_destroy_srq(devr->s1);
3711 mlx5_ib_destroy_srq(devr->s0);
3712 mlx5_ib_dealloc_xrcd(devr->x0);
3713 mlx5_ib_dealloc_xrcd(devr->x1);
3714 mlx5_ib_destroy_cq(devr->c0);
3715 mlx5_ib_dealloc_pd(devr->p0);
3716
3717 /* Make sure no change P_Key work items are still executing */
3718 for (port = 0; port < dev->num_ports; ++port)
3719 cancel_work_sync(&devr->ports[port].pkey_change_work);
3720 }
3721
3722 static u32 get_core_cap_flags(struct ib_device *ibdev)
3723 {
3724 struct mlx5_ib_dev *dev = to_mdev(ibdev);
3725 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1);
3726 u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type);
3727 u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version);
3728 bool raw_support = !mlx5_core_mp_enabled(dev->mdev);
3729 u32 ret = 0;
3730
3731 if (ll == IB_LINK_LAYER_INFINIBAND)
3732 return RDMA_CORE_PORT_IBA_IB;
3733
3734 if (raw_support)
3735 ret = RDMA_CORE_PORT_RAW_PACKET;
3736
3737 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP))
3738 return ret;
3739
3740 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP))
3741 return ret;
3742
3743 if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP)
3744 ret |= RDMA_CORE_PORT_IBA_ROCE;
3745
3746 if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP)
3747 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
3748
3749 return ret;
3750 }
3751
3752 static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
3753 struct ib_port_immutable *immutable)
3754 {
3755 struct ib_port_attr attr;
3756 struct mlx5_ib_dev *dev = to_mdev(ibdev);
3757 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num);
3758 int err;
3759
3760 immutable->core_cap_flags = get_core_cap_flags(ibdev);
3761
3762 err = ib_query_port(ibdev, port_num, &attr);
3763 if (err)
3764 return err;
3765
3766 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3767 immutable->gid_tbl_len = attr.gid_tbl_len;
3768 immutable->core_cap_flags = get_core_cap_flags(ibdev);
3769 if ((ll == IB_LINK_LAYER_INFINIBAND) || MLX5_CAP_GEN(dev->mdev, roce))
3770 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
3771
3772 return 0;
3773 }
3774
3775 static void get_dev_fw_str(struct ib_device *ibdev, char *str)
3776 {
3777 struct mlx5_ib_dev *dev =
3778 container_of(ibdev, struct mlx5_ib_dev, ib_dev);
3779 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%04d",
3780 fw_rev_maj(dev->mdev), fw_rev_min(dev->mdev),
3781 fw_rev_sub(dev->mdev));
3782 }
3783
3784 static int mlx5_eth_lag_init(struct mlx5_ib_dev *dev)
3785 {
3786 struct mlx5_core_dev *mdev = dev->mdev;
3787 struct mlx5_flow_namespace *ns = mlx5_get_flow_namespace(mdev,
3788 MLX5_FLOW_NAMESPACE_LAG);
3789 struct mlx5_flow_table *ft;
3790 int err;
3791
3792 if (!ns || !mlx5_lag_is_active(mdev))
3793 return 0;
3794
3795 err = mlx5_cmd_create_vport_lag(mdev);
3796 if (err)
3797 return err;
3798
3799 ft = mlx5_create_lag_demux_flow_table(ns, 0, 0);
3800 if (IS_ERR(ft)) {
3801 err = PTR_ERR(ft);
3802 goto err_destroy_vport_lag;
3803 }
3804
3805 dev->flow_db.lag_demux_ft = ft;
3806 return 0;
3807
3808 err_destroy_vport_lag:
3809 mlx5_cmd_destroy_vport_lag(mdev);
3810 return err;
3811 }
3812
3813 static void mlx5_eth_lag_cleanup(struct mlx5_ib_dev *dev)
3814 {
3815 struct mlx5_core_dev *mdev = dev->mdev;
3816
3817 if (dev->flow_db.lag_demux_ft) {
3818 mlx5_destroy_flow_table(dev->flow_db.lag_demux_ft);
3819 dev->flow_db.lag_demux_ft = NULL;
3820
3821 mlx5_cmd_destroy_vport_lag(mdev);
3822 }
3823 }
3824
3825 static int mlx5_add_netdev_notifier(struct mlx5_ib_dev *dev, u8 port_num)
3826 {
3827 int err;
3828
3829 dev->roce[port_num].nb.notifier_call = mlx5_netdev_event;
3830 err = register_netdevice_notifier(&dev->roce[port_num].nb);
3831 if (err) {
3832 dev->roce[port_num].nb.notifier_call = NULL;
3833 return err;
3834 }
3835
3836 return 0;
3837 }
3838
3839 static void mlx5_remove_netdev_notifier(struct mlx5_ib_dev *dev, u8 port_num)
3840 {
3841 if (dev->roce[port_num].nb.notifier_call) {
3842 unregister_netdevice_notifier(&dev->roce[port_num].nb);
3843 dev->roce[port_num].nb.notifier_call = NULL;
3844 }
3845 }
3846
3847 static int mlx5_enable_eth(struct mlx5_ib_dev *dev, u8 port_num)
3848 {
3849 int err;
3850
3851 err = mlx5_add_netdev_notifier(dev, port_num);
3852 if (err)
3853 return err;
3854
3855 if (MLX5_CAP_GEN(dev->mdev, roce)) {
3856 err = mlx5_nic_vport_enable_roce(dev->mdev);
3857 if (err)
3858 goto err_unregister_netdevice_notifier;
3859 }
3860
3861 err = mlx5_eth_lag_init(dev);
3862 if (err)
3863 goto err_disable_roce;
3864
3865 return 0;
3866
3867 err_disable_roce:
3868 if (MLX5_CAP_GEN(dev->mdev, roce))
3869 mlx5_nic_vport_disable_roce(dev->mdev);
3870
3871 err_unregister_netdevice_notifier:
3872 mlx5_remove_netdev_notifier(dev, port_num);
3873 return err;
3874 }
3875
3876 static void mlx5_disable_eth(struct mlx5_ib_dev *dev)
3877 {
3878 mlx5_eth_lag_cleanup(dev);
3879 if (MLX5_CAP_GEN(dev->mdev, roce))
3880 mlx5_nic_vport_disable_roce(dev->mdev);
3881 }
3882
3883 struct mlx5_ib_counter {
3884 const char *name;
3885 size_t offset;
3886 };
3887
3888 #define INIT_Q_COUNTER(_name) \
3889 { .name = #_name, .offset = MLX5_BYTE_OFF(query_q_counter_out, _name)}
3890
3891 static const struct mlx5_ib_counter basic_q_cnts[] = {
3892 INIT_Q_COUNTER(rx_write_requests),
3893 INIT_Q_COUNTER(rx_read_requests),
3894 INIT_Q_COUNTER(rx_atomic_requests),
3895 INIT_Q_COUNTER(out_of_buffer),
3896 };
3897
3898 static const struct mlx5_ib_counter out_of_seq_q_cnts[] = {
3899 INIT_Q_COUNTER(out_of_sequence),
3900 };
3901
3902 static const struct mlx5_ib_counter retrans_q_cnts[] = {
3903 INIT_Q_COUNTER(duplicate_request),
3904 INIT_Q_COUNTER(rnr_nak_retry_err),
3905 INIT_Q_COUNTER(packet_seq_err),
3906 INIT_Q_COUNTER(implied_nak_seq_err),
3907 INIT_Q_COUNTER(local_ack_timeout_err),
3908 };
3909
3910 #define INIT_CONG_COUNTER(_name) \
3911 { .name = #_name, .offset = \
3912 MLX5_BYTE_OFF(query_cong_statistics_out, _name ## _high)}
3913
3914 static const struct mlx5_ib_counter cong_cnts[] = {
3915 INIT_CONG_COUNTER(rp_cnp_ignored),
3916 INIT_CONG_COUNTER(rp_cnp_handled),
3917 INIT_CONG_COUNTER(np_ecn_marked_roce_packets),
3918 INIT_CONG_COUNTER(np_cnp_sent),
3919 };
3920
3921 static const struct mlx5_ib_counter extended_err_cnts[] = {
3922 INIT_Q_COUNTER(resp_local_length_error),
3923 INIT_Q_COUNTER(resp_cqe_error),
3924 INIT_Q_COUNTER(req_cqe_error),
3925 INIT_Q_COUNTER(req_remote_invalid_request),
3926 INIT_Q_COUNTER(req_remote_access_errors),
3927 INIT_Q_COUNTER(resp_remote_access_errors),
3928 INIT_Q_COUNTER(resp_cqe_flush_error),
3929 INIT_Q_COUNTER(req_cqe_flush_error),
3930 };
3931
3932 static void mlx5_ib_dealloc_counters(struct mlx5_ib_dev *dev)
3933 {
3934 int i;
3935
3936 for (i = 0; i < dev->num_ports; i++) {
3937 if (dev->port[i].cnts.set_id)
3938 mlx5_core_dealloc_q_counter(dev->mdev,
3939 dev->port[i].cnts.set_id);
3940 kfree(dev->port[i].cnts.names);
3941 kfree(dev->port[i].cnts.offsets);
3942 }
3943 }
3944
3945 static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev,
3946 struct mlx5_ib_counters *cnts)
3947 {
3948 u32 num_counters;
3949
3950 num_counters = ARRAY_SIZE(basic_q_cnts);
3951
3952 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt))
3953 num_counters += ARRAY_SIZE(out_of_seq_q_cnts);
3954
3955 if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters))
3956 num_counters += ARRAY_SIZE(retrans_q_cnts);
3957
3958 if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters))
3959 num_counters += ARRAY_SIZE(extended_err_cnts);
3960
3961 cnts->num_q_counters = num_counters;
3962
3963 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
3964 cnts->num_cong_counters = ARRAY_SIZE(cong_cnts);
3965 num_counters += ARRAY_SIZE(cong_cnts);
3966 }
3967
3968 cnts->names = kcalloc(num_counters, sizeof(cnts->names), GFP_KERNEL);
3969 if (!cnts->names)
3970 return -ENOMEM;
3971
3972 cnts->offsets = kcalloc(num_counters,
3973 sizeof(cnts->offsets), GFP_KERNEL);
3974 if (!cnts->offsets)
3975 goto err_names;
3976
3977 return 0;
3978
3979 err_names:
3980 kfree(cnts->names);
3981 cnts->names = NULL;
3982 return -ENOMEM;
3983 }
3984
3985 static void mlx5_ib_fill_counters(struct mlx5_ib_dev *dev,
3986 const char **names,
3987 size_t *offsets)
3988 {
3989 int i;
3990 int j = 0;
3991
3992 for (i = 0; i < ARRAY_SIZE(basic_q_cnts); i++, j++) {
3993 names[j] = basic_q_cnts[i].name;
3994 offsets[j] = basic_q_cnts[i].offset;
3995 }
3996
3997 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt)) {
3998 for (i = 0; i < ARRAY_SIZE(out_of_seq_q_cnts); i++, j++) {
3999 names[j] = out_of_seq_q_cnts[i].name;
4000 offsets[j] = out_of_seq_q_cnts[i].offset;
4001 }
4002 }
4003
4004 if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) {
4005 for (i = 0; i < ARRAY_SIZE(retrans_q_cnts); i++, j++) {
4006 names[j] = retrans_q_cnts[i].name;
4007 offsets[j] = retrans_q_cnts[i].offset;
4008 }
4009 }
4010
4011 if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters)) {
4012 for (i = 0; i < ARRAY_SIZE(extended_err_cnts); i++, j++) {
4013 names[j] = extended_err_cnts[i].name;
4014 offsets[j] = extended_err_cnts[i].offset;
4015 }
4016 }
4017
4018 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
4019 for (i = 0; i < ARRAY_SIZE(cong_cnts); i++, j++) {
4020 names[j] = cong_cnts[i].name;
4021 offsets[j] = cong_cnts[i].offset;
4022 }
4023 }
4024 }
4025
4026 static int mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev)
4027 {
4028 int err = 0;
4029 int i;
4030
4031 for (i = 0; i < dev->num_ports; i++) {
4032 err = __mlx5_ib_alloc_counters(dev, &dev->port[i].cnts);
4033 if (err)
4034 goto err_alloc;
4035
4036 mlx5_ib_fill_counters(dev, dev->port[i].cnts.names,
4037 dev->port[i].cnts.offsets);
4038
4039 err = mlx5_core_alloc_q_counter(dev->mdev,
4040 &dev->port[i].cnts.set_id);
4041 if (err) {
4042 mlx5_ib_warn(dev,
4043 "couldn't allocate queue counter for port %d, err %d\n",
4044 i + 1, err);
4045 goto err_alloc;
4046 }
4047 dev->port[i].cnts.set_id_valid = true;
4048 }
4049
4050 return 0;
4051
4052 err_alloc:
4053 mlx5_ib_dealloc_counters(dev);
4054 return err;
4055 }
4056
4057 static struct rdma_hw_stats *mlx5_ib_alloc_hw_stats(struct ib_device *ibdev,
4058 u8 port_num)
4059 {
4060 struct mlx5_ib_dev *dev = to_mdev(ibdev);
4061 struct mlx5_ib_port *port = &dev->port[port_num - 1];
4062
4063 /* We support only per port stats */
4064 if (port_num == 0)
4065 return NULL;
4066
4067 return rdma_alloc_hw_stats_struct(port->cnts.names,
4068 port->cnts.num_q_counters +
4069 port->cnts.num_cong_counters,
4070 RDMA_HW_STATS_DEFAULT_LIFESPAN);
4071 }
4072
4073 static int mlx5_ib_query_q_counters(struct mlx5_core_dev *mdev,
4074 struct mlx5_ib_port *port,
4075 struct rdma_hw_stats *stats)
4076 {
4077 int outlen = MLX5_ST_SZ_BYTES(query_q_counter_out);
4078 void *out;
4079 __be32 val;
4080 int ret, i;
4081
4082 out = kvzalloc(outlen, GFP_KERNEL);
4083 if (!out)
4084 return -ENOMEM;
4085
4086 ret = mlx5_core_query_q_counter(mdev,
4087 port->cnts.set_id, 0,
4088 out, outlen);
4089 if (ret)
4090 goto free;
4091
4092 for (i = 0; i < port->cnts.num_q_counters; i++) {
4093 val = *(__be32 *)(out + port->cnts.offsets[i]);
4094 stats->value[i] = (u64)be32_to_cpu(val);
4095 }
4096
4097 free:
4098 kvfree(out);
4099 return ret;
4100 }
4101
4102 static int mlx5_ib_get_hw_stats(struct ib_device *ibdev,
4103 struct rdma_hw_stats *stats,
4104 u8 port_num, int index)
4105 {
4106 struct mlx5_ib_dev *dev = to_mdev(ibdev);
4107 struct mlx5_ib_port *port = &dev->port[port_num - 1];
4108 struct mlx5_core_dev *mdev;
4109 int ret, num_counters;
4110 u8 mdev_port_num;
4111
4112 if (!stats)
4113 return -EINVAL;
4114
4115 num_counters = port->cnts.num_q_counters + port->cnts.num_cong_counters;
4116
4117 /* q_counters are per IB device, query the master mdev */
4118 ret = mlx5_ib_query_q_counters(dev->mdev, port, stats);
4119 if (ret)
4120 return ret;
4121
4122 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
4123 mdev = mlx5_ib_get_native_port_mdev(dev, port_num,
4124 &mdev_port_num);
4125 if (!mdev) {
4126 /* If port is not affiliated yet, its in down state
4127 * which doesn't have any counters yet, so it would be
4128 * zero. So no need to read from the HCA.
4129 */
4130 goto done;
4131 }
4132 ret = mlx5_lag_query_cong_counters(dev->mdev,
4133 stats->value +
4134 port->cnts.num_q_counters,
4135 port->cnts.num_cong_counters,
4136 port->cnts.offsets +
4137 port->cnts.num_q_counters);
4138
4139 mlx5_ib_put_native_port_mdev(dev, port_num);
4140 if (ret)
4141 return ret;
4142 }
4143
4144 done:
4145 return num_counters;
4146 }
4147
4148 static void mlx5_ib_free_rdma_netdev(struct net_device *netdev)
4149 {
4150 return mlx5_rdma_netdev_free(netdev);
4151 }
4152
4153 static struct net_device*
4154 mlx5_ib_alloc_rdma_netdev(struct ib_device *hca,
4155 u8 port_num,
4156 enum rdma_netdev_t type,
4157 const char *name,
4158 unsigned char name_assign_type,
4159 void (*setup)(struct net_device *))
4160 {
4161 struct net_device *netdev;
4162 struct rdma_netdev *rn;
4163
4164 if (type != RDMA_NETDEV_IPOIB)
4165 return ERR_PTR(-EOPNOTSUPP);
4166
4167 netdev = mlx5_rdma_netdev_alloc(to_mdev(hca)->mdev, hca,
4168 name, setup);
4169 if (likely(!IS_ERR_OR_NULL(netdev))) {
4170 rn = netdev_priv(netdev);
4171 rn->free_rdma_netdev = mlx5_ib_free_rdma_netdev;
4172 }
4173 return netdev;
4174 }
4175
4176 static void delay_drop_debugfs_cleanup(struct mlx5_ib_dev *dev)
4177 {
4178 if (!dev->delay_drop.dbg)
4179 return;
4180 debugfs_remove_recursive(dev->delay_drop.dbg->dir_debugfs);
4181 kfree(dev->delay_drop.dbg);
4182 dev->delay_drop.dbg = NULL;
4183 }
4184
4185 static void cancel_delay_drop(struct mlx5_ib_dev *dev)
4186 {
4187 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP))
4188 return;
4189
4190 cancel_work_sync(&dev->delay_drop.delay_drop_work);
4191 delay_drop_debugfs_cleanup(dev);
4192 }
4193
4194 static ssize_t delay_drop_timeout_read(struct file *filp, char __user *buf,
4195 size_t count, loff_t *pos)
4196 {
4197 struct mlx5_ib_delay_drop *delay_drop = filp->private_data;
4198 char lbuf[20];
4199 int len;
4200
4201 len = snprintf(lbuf, sizeof(lbuf), "%u\n", delay_drop->timeout);
4202 return simple_read_from_buffer(buf, count, pos, lbuf, len);
4203 }
4204
4205 static ssize_t delay_drop_timeout_write(struct file *filp, const char __user *buf,
4206 size_t count, loff_t *pos)
4207 {
4208 struct mlx5_ib_delay_drop *delay_drop = filp->private_data;
4209 u32 timeout;
4210 u32 var;
4211
4212 if (kstrtouint_from_user(buf, count, 0, &var))
4213 return -EFAULT;
4214
4215 timeout = min_t(u32, roundup(var, 100), MLX5_MAX_DELAY_DROP_TIMEOUT_MS *
4216 1000);
4217 if (timeout != var)
4218 mlx5_ib_dbg(delay_drop->dev, "Round delay drop timeout to %u usec\n",
4219 timeout);
4220
4221 delay_drop->timeout = timeout;
4222
4223 return count;
4224 }
4225
4226 static const struct file_operations fops_delay_drop_timeout = {
4227 .owner = THIS_MODULE,
4228 .open = simple_open,
4229 .write = delay_drop_timeout_write,
4230 .read = delay_drop_timeout_read,
4231 };
4232
4233 static int delay_drop_debugfs_init(struct mlx5_ib_dev *dev)
4234 {
4235 struct mlx5_ib_dbg_delay_drop *dbg;
4236
4237 if (!mlx5_debugfs_root)
4238 return 0;
4239
4240 dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
4241 if (!dbg)
4242 return -ENOMEM;
4243
4244 dev->delay_drop.dbg = dbg;
4245
4246 dbg->dir_debugfs =
4247 debugfs_create_dir("delay_drop",
4248 dev->mdev->priv.dbg_root);
4249 if (!dbg->dir_debugfs)
4250 goto out_debugfs;
4251
4252 dbg->events_cnt_debugfs =
4253 debugfs_create_atomic_t("num_timeout_events", 0400,
4254 dbg->dir_debugfs,
4255 &dev->delay_drop.events_cnt);
4256 if (!dbg->events_cnt_debugfs)
4257 goto out_debugfs;
4258
4259 dbg->rqs_cnt_debugfs =
4260 debugfs_create_atomic_t("num_rqs", 0400,
4261 dbg->dir_debugfs,
4262 &dev->delay_drop.rqs_cnt);
4263 if (!dbg->rqs_cnt_debugfs)
4264 goto out_debugfs;
4265
4266 dbg->timeout_debugfs =
4267 debugfs_create_file("timeout", 0600,
4268 dbg->dir_debugfs,
4269 &dev->delay_drop,
4270 &fops_delay_drop_timeout);
4271 if (!dbg->timeout_debugfs)
4272 goto out_debugfs;
4273
4274 return 0;
4275
4276 out_debugfs:
4277 delay_drop_debugfs_cleanup(dev);
4278 return -ENOMEM;
4279 }
4280
4281 static void init_delay_drop(struct mlx5_ib_dev *dev)
4282 {
4283 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP))
4284 return;
4285
4286 mutex_init(&dev->delay_drop.lock);
4287 dev->delay_drop.dev = dev;
4288 dev->delay_drop.activate = false;
4289 dev->delay_drop.timeout = MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 1000;
4290 INIT_WORK(&dev->delay_drop.delay_drop_work, delay_drop_handler);
4291 atomic_set(&dev->delay_drop.rqs_cnt, 0);
4292 atomic_set(&dev->delay_drop.events_cnt, 0);
4293
4294 if (delay_drop_debugfs_init(dev))
4295 mlx5_ib_warn(dev, "Failed to init delay drop debugfs\n");
4296 }
4297
4298 static const struct cpumask *
4299 mlx5_ib_get_vector_affinity(struct ib_device *ibdev, int comp_vector)
4300 {
4301 struct mlx5_ib_dev *dev = to_mdev(ibdev);
4302
4303 return mlx5_get_vector_affinity(dev->mdev, comp_vector);
4304 }
4305
4306 /* The mlx5_ib_multiport_mutex should be held when calling this function */
4307 static void mlx5_ib_unbind_slave_port(struct mlx5_ib_dev *ibdev,
4308 struct mlx5_ib_multiport_info *mpi)
4309 {
4310 u8 port_num = mlx5_core_native_port_num(mpi->mdev) - 1;
4311 struct mlx5_ib_port *port = &ibdev->port[port_num];
4312 int comps;
4313 int err;
4314 int i;
4315
4316 mlx5_ib_cleanup_cong_debugfs(ibdev, port_num);
4317
4318 spin_lock(&port->mp.mpi_lock);
4319 if (!mpi->ibdev) {
4320 spin_unlock(&port->mp.mpi_lock);
4321 return;
4322 }
4323 mpi->ibdev = NULL;
4324
4325 spin_unlock(&port->mp.mpi_lock);
4326 mlx5_remove_netdev_notifier(ibdev, port_num);
4327 spin_lock(&port->mp.mpi_lock);
4328
4329 comps = mpi->mdev_refcnt;
4330 if (comps) {
4331 mpi->unaffiliate = true;
4332 init_completion(&mpi->unref_comp);
4333 spin_unlock(&port->mp.mpi_lock);
4334
4335 for (i = 0; i < comps; i++)
4336 wait_for_completion(&mpi->unref_comp);
4337
4338 spin_lock(&port->mp.mpi_lock);
4339 mpi->unaffiliate = false;
4340 }
4341
4342 port->mp.mpi = NULL;
4343
4344 list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list);
4345
4346 spin_unlock(&port->mp.mpi_lock);
4347
4348 err = mlx5_nic_vport_unaffiliate_multiport(mpi->mdev);
4349
4350 mlx5_ib_dbg(ibdev, "unaffiliated port %d\n", port_num + 1);
4351 /* Log an error, still needed to cleanup the pointers and add
4352 * it back to the list.
4353 */
4354 if (err)
4355 mlx5_ib_err(ibdev, "Failed to unaffiliate port %u\n",
4356 port_num + 1);
4357
4358 ibdev->roce[port_num].last_port_state = IB_PORT_DOWN;
4359 }
4360
4361 /* The mlx5_ib_multiport_mutex should be held when calling this function */
4362 static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev,
4363 struct mlx5_ib_multiport_info *mpi)
4364 {
4365 u8 port_num = mlx5_core_native_port_num(mpi->mdev) - 1;
4366 int err;
4367
4368 spin_lock(&ibdev->port[port_num].mp.mpi_lock);
4369 if (ibdev->port[port_num].mp.mpi) {
4370 mlx5_ib_warn(ibdev, "port %d already affiliated.\n",
4371 port_num + 1);
4372 spin_unlock(&ibdev->port[port_num].mp.mpi_lock);
4373 return false;
4374 }
4375
4376 ibdev->port[port_num].mp.mpi = mpi;
4377 mpi->ibdev = ibdev;
4378 spin_unlock(&ibdev->port[port_num].mp.mpi_lock);
4379
4380 err = mlx5_nic_vport_affiliate_multiport(ibdev->mdev, mpi->mdev);
4381 if (err)
4382 goto unbind;
4383
4384 err = get_port_caps(ibdev, mlx5_core_native_port_num(mpi->mdev));
4385 if (err)
4386 goto unbind;
4387
4388 err = mlx5_add_netdev_notifier(ibdev, port_num);
4389 if (err) {
4390 mlx5_ib_err(ibdev, "failed adding netdev notifier for port %u\n",
4391 port_num + 1);
4392 goto unbind;
4393 }
4394
4395 err = mlx5_ib_init_cong_debugfs(ibdev, port_num);
4396 if (err)
4397 goto unbind;
4398
4399 return true;
4400
4401 unbind:
4402 mlx5_ib_unbind_slave_port(ibdev, mpi);
4403 return false;
4404 }
4405
4406 static int mlx5_ib_init_multiport_master(struct mlx5_ib_dev *dev)
4407 {
4408 int port_num = mlx5_core_native_port_num(dev->mdev) - 1;
4409 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev,
4410 port_num + 1);
4411 struct mlx5_ib_multiport_info *mpi;
4412 int err;
4413 int i;
4414
4415 if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
4416 return 0;
4417
4418 err = mlx5_query_nic_vport_system_image_guid(dev->mdev,
4419 &dev->sys_image_guid);
4420 if (err)
4421 return err;
4422
4423 err = mlx5_nic_vport_enable_roce(dev->mdev);
4424 if (err)
4425 return err;
4426
4427 mutex_lock(&mlx5_ib_multiport_mutex);
4428 for (i = 0; i < dev->num_ports; i++) {
4429 bool bound = false;
4430
4431 /* build a stub multiport info struct for the native port. */
4432 if (i == port_num) {
4433 mpi = kzalloc(sizeof(*mpi), GFP_KERNEL);
4434 if (!mpi) {
4435 mutex_unlock(&mlx5_ib_multiport_mutex);
4436 mlx5_nic_vport_disable_roce(dev->mdev);
4437 return -ENOMEM;
4438 }
4439
4440 mpi->is_master = true;
4441 mpi->mdev = dev->mdev;
4442 mpi->sys_image_guid = dev->sys_image_guid;
4443 dev->port[i].mp.mpi = mpi;
4444 mpi->ibdev = dev;
4445 mpi = NULL;
4446 continue;
4447 }
4448
4449 list_for_each_entry(mpi, &mlx5_ib_unaffiliated_port_list,
4450 list) {
4451 if (dev->sys_image_guid == mpi->sys_image_guid &&
4452 (mlx5_core_native_port_num(mpi->mdev) - 1) == i) {
4453 bound = mlx5_ib_bind_slave_port(dev, mpi);
4454 }
4455
4456 if (bound) {
4457 dev_dbg(&mpi->mdev->pdev->dev, "removing port from unaffiliated list.\n");
4458 mlx5_ib_dbg(dev, "port %d bound\n", i + 1);
4459 list_del(&mpi->list);
4460 break;
4461 }
4462 }
4463 if (!bound) {
4464 get_port_caps(dev, i + 1);
4465 mlx5_ib_dbg(dev, "no free port found for port %d\n",
4466 i + 1);
4467 }
4468 }
4469
4470 list_add_tail(&dev->ib_dev_list, &mlx5_ib_dev_list);
4471 mutex_unlock(&mlx5_ib_multiport_mutex);
4472 return err;
4473 }
4474
4475 static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev)
4476 {
4477 int port_num = mlx5_core_native_port_num(dev->mdev) - 1;
4478 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev,
4479 port_num + 1);
4480 int i;
4481
4482 if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
4483 return;
4484
4485 mutex_lock(&mlx5_ib_multiport_mutex);
4486 for (i = 0; i < dev->num_ports; i++) {
4487 if (dev->port[i].mp.mpi) {
4488 /* Destroy the native port stub */
4489 if (i == port_num) {
4490 kfree(dev->port[i].mp.mpi);
4491 dev->port[i].mp.mpi = NULL;
4492 } else {
4493 mlx5_ib_dbg(dev, "unbinding port_num: %d\n", i + 1);
4494 mlx5_ib_unbind_slave_port(dev, dev->port[i].mp.mpi);
4495 }
4496 }
4497 }
4498
4499 mlx5_ib_dbg(dev, "removing from devlist\n");
4500 list_del(&dev->ib_dev_list);
4501 mutex_unlock(&mlx5_ib_multiport_mutex);
4502
4503 mlx5_nic_vport_disable_roce(dev->mdev);
4504 }
4505
4506 static void mlx5_ib_stage_init_cleanup(struct mlx5_ib_dev *dev)
4507 {
4508 mlx5_ib_cleanup_multiport_master(dev);
4509 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
4510 cleanup_srcu_struct(&dev->mr_srcu);
4511 #endif
4512 kfree(dev->port);
4513 }
4514
4515 static int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
4516 {
4517 struct mlx5_core_dev *mdev = dev->mdev;
4518 const char *name;
4519 int err;
4520 int i;
4521
4522 dev->port = kcalloc(dev->num_ports, sizeof(*dev->port),
4523 GFP_KERNEL);
4524 if (!dev->port)
4525 return -ENOMEM;
4526
4527 for (i = 0; i < dev->num_ports; i++) {
4528 spin_lock_init(&dev->port[i].mp.mpi_lock);
4529 rwlock_init(&dev->roce[i].netdev_lock);
4530 }
4531
4532 err = mlx5_ib_init_multiport_master(dev);
4533 if (err)
4534 goto err_free_port;
4535
4536 if (!mlx5_core_mp_enabled(mdev)) {
4537 int i;
4538
4539 for (i = 1; i <= dev->num_ports; i++) {
4540 err = get_port_caps(dev, i);
4541 if (err)
4542 break;
4543 }
4544 } else {
4545 err = get_port_caps(dev, mlx5_core_native_port_num(mdev));
4546 }
4547 if (err)
4548 goto err_mp;
4549
4550 if (mlx5_use_mad_ifc(dev))
4551 get_ext_port_caps(dev);
4552
4553 if (!mlx5_lag_is_active(mdev))
4554 name = "mlx5_%d";
4555 else
4556 name = "mlx5_bond_%d";
4557
4558 strlcpy(dev->ib_dev.name, name, IB_DEVICE_NAME_MAX);
4559 dev->ib_dev.owner = THIS_MODULE;
4560 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
4561 dev->ib_dev.local_dma_lkey = 0 /* not supported for now */;
4562 dev->ib_dev.phys_port_cnt = dev->num_ports;
4563 dev->ib_dev.num_comp_vectors =
4564 dev->mdev->priv.eq_table.num_comp_vectors;
4565 dev->ib_dev.dev.parent = &mdev->pdev->dev;
4566
4567 mutex_init(&dev->flow_db.lock);
4568 mutex_init(&dev->cap_mask_mutex);
4569 INIT_LIST_HEAD(&dev->qp_list);
4570 spin_lock_init(&dev->reset_flow_resource_lock);
4571
4572 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
4573 err = init_srcu_struct(&dev->mr_srcu);
4574 if (err)
4575 goto err_free_port;
4576 #endif
4577
4578 return 0;
4579 err_mp:
4580 mlx5_ib_cleanup_multiport_master(dev);
4581
4582 err_free_port:
4583 kfree(dev->port);
4584
4585 return -ENOMEM;
4586 }
4587
4588 static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
4589 {
4590 struct mlx5_core_dev *mdev = dev->mdev;
4591 int err;
4592
4593 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
4594 dev->ib_dev.uverbs_cmd_mask =
4595 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
4596 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
4597 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
4598 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
4599 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
4600 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
4601 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
4602 (1ull << IB_USER_VERBS_CMD_REG_MR) |
4603 (1ull << IB_USER_VERBS_CMD_REREG_MR) |
4604 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
4605 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
4606 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
4607 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
4608 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
4609 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
4610 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
4611 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
4612 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
4613 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
4614 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
4615 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
4616 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
4617 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
4618 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
4619 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
4620 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
4621 dev->ib_dev.uverbs_ex_cmd_mask =
4622 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
4623 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
4624 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP) |
4625 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_QP) |
4626 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ);
4627
4628 dev->ib_dev.query_device = mlx5_ib_query_device;
4629 dev->ib_dev.query_port = mlx5_ib_query_port;
4630 dev->ib_dev.get_link_layer = mlx5_ib_port_link_layer;
4631 dev->ib_dev.query_gid = mlx5_ib_query_gid;
4632 dev->ib_dev.add_gid = mlx5_ib_add_gid;
4633 dev->ib_dev.del_gid = mlx5_ib_del_gid;
4634 dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
4635 dev->ib_dev.modify_device = mlx5_ib_modify_device;
4636 dev->ib_dev.modify_port = mlx5_ib_modify_port;
4637 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
4638 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
4639 dev->ib_dev.mmap = mlx5_ib_mmap;
4640 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
4641 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
4642 dev->ib_dev.create_ah = mlx5_ib_create_ah;
4643 dev->ib_dev.query_ah = mlx5_ib_query_ah;
4644 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
4645 dev->ib_dev.create_srq = mlx5_ib_create_srq;
4646 dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
4647 dev->ib_dev.query_srq = mlx5_ib_query_srq;
4648 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
4649 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
4650 dev->ib_dev.create_qp = mlx5_ib_create_qp;
4651 dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
4652 dev->ib_dev.query_qp = mlx5_ib_query_qp;
4653 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
4654 dev->ib_dev.post_send = mlx5_ib_post_send;
4655 dev->ib_dev.post_recv = mlx5_ib_post_recv;
4656 dev->ib_dev.create_cq = mlx5_ib_create_cq;
4657 dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
4658 dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
4659 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
4660 dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
4661 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
4662 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
4663 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
4664 dev->ib_dev.rereg_user_mr = mlx5_ib_rereg_user_mr;
4665 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
4666 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
4667 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
4668 dev->ib_dev.process_mad = mlx5_ib_process_mad;
4669 dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
4670 dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg;
4671 dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
4672 dev->ib_dev.get_port_immutable = mlx5_port_immutable;
4673 dev->ib_dev.get_dev_fw_str = get_dev_fw_str;
4674 dev->ib_dev.get_vector_affinity = mlx5_ib_get_vector_affinity;
4675 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads))
4676 dev->ib_dev.alloc_rdma_netdev = mlx5_ib_alloc_rdma_netdev;
4677
4678 if (mlx5_core_is_pf(mdev)) {
4679 dev->ib_dev.get_vf_config = mlx5_ib_get_vf_config;
4680 dev->ib_dev.set_vf_link_state = mlx5_ib_set_vf_link_state;
4681 dev->ib_dev.get_vf_stats = mlx5_ib_get_vf_stats;
4682 dev->ib_dev.set_vf_guid = mlx5_ib_set_vf_guid;
4683 }
4684
4685 dev->ib_dev.disassociate_ucontext = mlx5_ib_disassociate_ucontext;
4686
4687 dev->umr_fence = mlx5_get_umr_fence(MLX5_CAP_GEN(mdev, umr_fence));
4688
4689 if (MLX5_CAP_GEN(mdev, imaicl)) {
4690 dev->ib_dev.alloc_mw = mlx5_ib_alloc_mw;
4691 dev->ib_dev.dealloc_mw = mlx5_ib_dealloc_mw;
4692 dev->ib_dev.uverbs_cmd_mask |=
4693 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
4694 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
4695 }
4696
4697 if (MLX5_CAP_GEN(mdev, xrc)) {
4698 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
4699 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
4700 dev->ib_dev.uverbs_cmd_mask |=
4701 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
4702 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
4703 }
4704
4705 dev->ib_dev.create_flow = mlx5_ib_create_flow;
4706 dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow;
4707 dev->ib_dev.uverbs_ex_cmd_mask |=
4708 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
4709 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
4710
4711 err = init_node_data(dev);
4712 if (err)
4713 return err;
4714
4715 if ((MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) &&
4716 (MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) ||
4717 MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
4718 mutex_init(&dev->lb_mutex);
4719
4720 return 0;
4721 }
4722
4723 static int mlx5_ib_stage_roce_init(struct mlx5_ib_dev *dev)
4724 {
4725 struct mlx5_core_dev *mdev = dev->mdev;
4726 enum rdma_link_layer ll;
4727 int port_type_cap;
4728 u8 port_num;
4729 int err;
4730 int i;
4731
4732 port_num = mlx5_core_native_port_num(dev->mdev) - 1;
4733 port_type_cap = MLX5_CAP_GEN(mdev, port_type);
4734 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
4735
4736 if (ll == IB_LINK_LAYER_ETHERNET) {
4737 for (i = 0; i < dev->num_ports; i++) {
4738 dev->roce[i].dev = dev;
4739 dev->roce[i].native_port_num = i + 1;
4740 dev->roce[i].last_port_state = IB_PORT_DOWN;
4741 }
4742
4743 dev->ib_dev.get_netdev = mlx5_ib_get_netdev;
4744 dev->ib_dev.create_wq = mlx5_ib_create_wq;
4745 dev->ib_dev.modify_wq = mlx5_ib_modify_wq;
4746 dev->ib_dev.destroy_wq = mlx5_ib_destroy_wq;
4747 dev->ib_dev.create_rwq_ind_table = mlx5_ib_create_rwq_ind_table;
4748 dev->ib_dev.destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table;
4749 dev->ib_dev.uverbs_ex_cmd_mask |=
4750 (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) |
4751 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) |
4752 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) |
4753 (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
4754 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
4755 err = mlx5_enable_eth(dev, port_num);
4756 if (err)
4757 return err;
4758 }
4759
4760 return 0;
4761 }
4762
4763 static void mlx5_ib_stage_roce_cleanup(struct mlx5_ib_dev *dev)
4764 {
4765 struct mlx5_core_dev *mdev = dev->mdev;
4766 enum rdma_link_layer ll;
4767 int port_type_cap;
4768 u8 port_num;
4769
4770 port_num = mlx5_core_native_port_num(dev->mdev) - 1;
4771 port_type_cap = MLX5_CAP_GEN(mdev, port_type);
4772 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
4773
4774 if (ll == IB_LINK_LAYER_ETHERNET) {
4775 mlx5_disable_eth(dev);
4776 mlx5_remove_netdev_notifier(dev, port_num);
4777 }
4778 }
4779
4780 static int mlx5_ib_stage_dev_res_init(struct mlx5_ib_dev *dev)
4781 {
4782 return create_dev_resources(&dev->devr);
4783 }
4784
4785 static void mlx5_ib_stage_dev_res_cleanup(struct mlx5_ib_dev *dev)
4786 {
4787 destroy_dev_resources(&dev->devr);
4788 }
4789
4790 static int mlx5_ib_stage_odp_init(struct mlx5_ib_dev *dev)
4791 {
4792 mlx5_ib_internal_fill_odp_caps(dev);
4793
4794 return mlx5_ib_odp_init_one(dev);
4795 }
4796
4797 static int mlx5_ib_stage_counters_init(struct mlx5_ib_dev *dev)
4798 {
4799 if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) {
4800 dev->ib_dev.get_hw_stats = mlx5_ib_get_hw_stats;
4801 dev->ib_dev.alloc_hw_stats = mlx5_ib_alloc_hw_stats;
4802
4803 return mlx5_ib_alloc_counters(dev);
4804 }
4805
4806 return 0;
4807 }
4808
4809 static void mlx5_ib_stage_counters_cleanup(struct mlx5_ib_dev *dev)
4810 {
4811 if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt))
4812 mlx5_ib_dealloc_counters(dev);
4813 }
4814
4815 static int mlx5_ib_stage_cong_debugfs_init(struct mlx5_ib_dev *dev)
4816 {
4817 return mlx5_ib_init_cong_debugfs(dev,
4818 mlx5_core_native_port_num(dev->mdev) - 1);
4819 }
4820
4821 static void mlx5_ib_stage_cong_debugfs_cleanup(struct mlx5_ib_dev *dev)
4822 {
4823 mlx5_ib_cleanup_cong_debugfs(dev,
4824 mlx5_core_native_port_num(dev->mdev) - 1);
4825 }
4826
4827 static int mlx5_ib_stage_uar_init(struct mlx5_ib_dev *dev)
4828 {
4829 dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev);
4830 if (!dev->mdev->priv.uar)
4831 return -ENOMEM;
4832 return 0;
4833 }
4834
4835 static void mlx5_ib_stage_uar_cleanup(struct mlx5_ib_dev *dev)
4836 {
4837 mlx5_put_uars_page(dev->mdev, dev->mdev->priv.uar);
4838 }
4839
4840 static int mlx5_ib_stage_bfrag_init(struct mlx5_ib_dev *dev)
4841 {
4842 int err;
4843
4844 err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false);
4845 if (err)
4846 return err;
4847
4848 err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true);
4849 if (err)
4850 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
4851
4852 return err;
4853 }
4854
4855 static void mlx5_ib_stage_bfrag_cleanup(struct mlx5_ib_dev *dev)
4856 {
4857 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
4858 mlx5_free_bfreg(dev->mdev, &dev->bfreg);
4859 }
4860
4861 static int mlx5_ib_stage_ib_reg_init(struct mlx5_ib_dev *dev)
4862 {
4863 return ib_register_device(&dev->ib_dev, NULL);
4864 }
4865
4866 static void mlx5_ib_stage_ib_reg_cleanup(struct mlx5_ib_dev *dev)
4867 {
4868 ib_unregister_device(&dev->ib_dev);
4869 }
4870
4871 static int mlx5_ib_stage_umr_res_init(struct mlx5_ib_dev *dev)
4872 {
4873 return create_umr_res(dev);
4874 }
4875
4876 static void mlx5_ib_stage_umr_res_cleanup(struct mlx5_ib_dev *dev)
4877 {
4878 destroy_umrc_res(dev);
4879 }
4880
4881 static int mlx5_ib_stage_delay_drop_init(struct mlx5_ib_dev *dev)
4882 {
4883 init_delay_drop(dev);
4884
4885 return 0;
4886 }
4887
4888 static void mlx5_ib_stage_delay_drop_cleanup(struct mlx5_ib_dev *dev)
4889 {
4890 cancel_delay_drop(dev);
4891 }
4892
4893 static int mlx5_ib_stage_class_attr_init(struct mlx5_ib_dev *dev)
4894 {
4895 int err;
4896 int i;
4897
4898 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
4899 err = device_create_file(&dev->ib_dev.dev,
4900 mlx5_class_attributes[i]);
4901 if (err)
4902 return err;
4903 }
4904
4905 return 0;
4906 }
4907
4908 static void __mlx5_ib_remove(struct mlx5_ib_dev *dev,
4909 const struct mlx5_ib_profile *profile,
4910 int stage)
4911 {
4912 /* Number of stages to cleanup */
4913 while (stage) {
4914 stage--;
4915 if (profile->stage[stage].cleanup)
4916 profile->stage[stage].cleanup(dev);
4917 }
4918
4919 ib_dealloc_device((struct ib_device *)dev);
4920 }
4921
4922 static void *mlx5_ib_add_slave_port(struct mlx5_core_dev *mdev, u8 port_num);
4923
4924 static void *__mlx5_ib_add(struct mlx5_core_dev *mdev,
4925 const struct mlx5_ib_profile *profile)
4926 {
4927 struct mlx5_ib_dev *dev;
4928 int err;
4929 int i;
4930
4931 printk_once(KERN_INFO "%s", mlx5_version);
4932
4933 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
4934 if (!dev)
4935 return NULL;
4936
4937 dev->mdev = mdev;
4938 dev->num_ports = max(MLX5_CAP_GEN(mdev, num_ports),
4939 MLX5_CAP_GEN(mdev, num_vhca_ports));
4940
4941 for (i = 0; i < MLX5_IB_STAGE_MAX; i++) {
4942 if (profile->stage[i].init) {
4943 err = profile->stage[i].init(dev);
4944 if (err)
4945 goto err_out;
4946 }
4947 }
4948
4949 dev->profile = profile;
4950 dev->ib_active = true;
4951
4952 return dev;
4953
4954 err_out:
4955 __mlx5_ib_remove(dev, profile, i);
4956
4957 return NULL;
4958 }
4959
4960 static const struct mlx5_ib_profile pf_profile = {
4961 STAGE_CREATE(MLX5_IB_STAGE_INIT,
4962 mlx5_ib_stage_init_init,
4963 mlx5_ib_stage_init_cleanup),
4964 STAGE_CREATE(MLX5_IB_STAGE_CAPS,
4965 mlx5_ib_stage_caps_init,
4966 NULL),
4967 STAGE_CREATE(MLX5_IB_STAGE_ROCE,
4968 mlx5_ib_stage_roce_init,
4969 mlx5_ib_stage_roce_cleanup),
4970 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES,
4971 mlx5_ib_stage_dev_res_init,
4972 mlx5_ib_stage_dev_res_cleanup),
4973 STAGE_CREATE(MLX5_IB_STAGE_ODP,
4974 mlx5_ib_stage_odp_init,
4975 NULL),
4976 STAGE_CREATE(MLX5_IB_STAGE_COUNTERS,
4977 mlx5_ib_stage_counters_init,
4978 mlx5_ib_stage_counters_cleanup),
4979 STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS,
4980 mlx5_ib_stage_cong_debugfs_init,
4981 mlx5_ib_stage_cong_debugfs_cleanup),
4982 STAGE_CREATE(MLX5_IB_STAGE_UAR,
4983 mlx5_ib_stage_uar_init,
4984 mlx5_ib_stage_uar_cleanup),
4985 STAGE_CREATE(MLX5_IB_STAGE_BFREG,
4986 mlx5_ib_stage_bfrag_init,
4987 mlx5_ib_stage_bfrag_cleanup),
4988 STAGE_CREATE(MLX5_IB_STAGE_IB_REG,
4989 mlx5_ib_stage_ib_reg_init,
4990 mlx5_ib_stage_ib_reg_cleanup),
4991 STAGE_CREATE(MLX5_IB_STAGE_UMR_RESOURCES,
4992 mlx5_ib_stage_umr_res_init,
4993 mlx5_ib_stage_umr_res_cleanup),
4994 STAGE_CREATE(MLX5_IB_STAGE_DELAY_DROP,
4995 mlx5_ib_stage_delay_drop_init,
4996 mlx5_ib_stage_delay_drop_cleanup),
4997 STAGE_CREATE(MLX5_IB_STAGE_CLASS_ATTR,
4998 mlx5_ib_stage_class_attr_init,
4999 NULL),
5000 };
5001
5002 static void *mlx5_ib_add_slave_port(struct mlx5_core_dev *mdev, u8 port_num)
5003 {
5004 struct mlx5_ib_multiport_info *mpi;
5005 struct mlx5_ib_dev *dev;
5006 bool bound = false;
5007 int err;
5008
5009 mpi = kzalloc(sizeof(*mpi), GFP_KERNEL);
5010 if (!mpi)
5011 return NULL;
5012
5013 mpi->mdev = mdev;
5014
5015 err = mlx5_query_nic_vport_system_image_guid(mdev,
5016 &mpi->sys_image_guid);
5017 if (err) {
5018 kfree(mpi);
5019 return NULL;
5020 }
5021
5022 mutex_lock(&mlx5_ib_multiport_mutex);
5023 list_for_each_entry(dev, &mlx5_ib_dev_list, ib_dev_list) {
5024 if (dev->sys_image_guid == mpi->sys_image_guid)
5025 bound = mlx5_ib_bind_slave_port(dev, mpi);
5026
5027 if (bound) {
5028 rdma_roce_rescan_device(&dev->ib_dev);
5029 break;
5030 }
5031 }
5032
5033 if (!bound) {
5034 list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list);
5035 dev_dbg(&mdev->pdev->dev, "no suitable IB device found to bind to, added to unaffiliated list.\n");
5036 } else {
5037 mlx5_ib_dbg(dev, "bound port %u\n", port_num + 1);
5038 }
5039 mutex_unlock(&mlx5_ib_multiport_mutex);
5040
5041 return mpi;
5042 }
5043
5044 static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
5045 {
5046 enum rdma_link_layer ll;
5047 int port_type_cap;
5048
5049 port_type_cap = MLX5_CAP_GEN(mdev, port_type);
5050 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
5051
5052 if (mlx5_core_is_mp_slave(mdev) && ll == IB_LINK_LAYER_ETHERNET) {
5053 u8 port_num = mlx5_core_native_port_num(mdev) - 1;
5054
5055 return mlx5_ib_add_slave_port(mdev, port_num);
5056 }
5057
5058 return __mlx5_ib_add(mdev, &pf_profile);
5059 }
5060
5061 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
5062 {
5063 struct mlx5_ib_multiport_info *mpi;
5064 struct mlx5_ib_dev *dev;
5065
5066 if (mlx5_core_is_mp_slave(mdev)) {
5067 mpi = context;
5068 mutex_lock(&mlx5_ib_multiport_mutex);
5069 if (mpi->ibdev)
5070 mlx5_ib_unbind_slave_port(mpi->ibdev, mpi);
5071 list_del(&mpi->list);
5072 mutex_unlock(&mlx5_ib_multiport_mutex);
5073 return;
5074 }
5075
5076 dev = context;
5077 __mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX);
5078 }
5079
5080 static struct mlx5_interface mlx5_ib_interface = {
5081 .add = mlx5_ib_add,
5082 .remove = mlx5_ib_remove,
5083 .event = mlx5_ib_event,
5084 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
5085 .pfault = mlx5_ib_pfault,
5086 #endif
5087 .protocol = MLX5_INTERFACE_PROTOCOL_IB,
5088 };
5089
5090 static int __init mlx5_ib_init(void)
5091 {
5092 int err;
5093
5094 mlx5_ib_event_wq = alloc_ordered_workqueue("mlx5_ib_event_wq", 0);
5095 if (!mlx5_ib_event_wq)
5096 return -ENOMEM;
5097
5098 mlx5_ib_odp_init();
5099
5100 err = mlx5_register_interface(&mlx5_ib_interface);
5101
5102 return err;
5103 }
5104
5105 static void __exit mlx5_ib_cleanup(void)
5106 {
5107 mlx5_unregister_interface(&mlx5_ib_interface);
5108 destroy_workqueue(mlx5_ib_event_wq);
5109 }
5110
5111 module_init(mlx5_ib_init);
5112 module_exit(mlx5_ib_cleanup);
CRIS linux kernel tree