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Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
[linux/fpc-iii.git] / drivers / infiniband / hw / mlx4 / main.c
blobac6e2b710ea6fef928271869f0e170f2bbdb158d
1 /*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/errno.h>
38 #include <linux/netdevice.h>
39 #include <linux/inetdevice.h>
40 #include <linux/rtnetlink.h>
41 #include <linux/if_vlan.h>
42 #include <net/ipv6.h>
43 #include <net/addrconf.h>
44
45 #include <rdma/ib_smi.h>
46 #include <rdma/ib_user_verbs.h>
47 #include <rdma/ib_addr.h>
48
49 #include <linux/mlx4/driver.h>
50 #include <linux/mlx4/cmd.h>
51 #include <linux/mlx4/qp.h>
52
53 #include "mlx4_ib.h"
54 #include "user.h"
55
56 #define DRV_NAME MLX4_IB_DRV_NAME
57 #define DRV_VERSION "2.2-1"
58 #define DRV_RELDATE "Feb 2014"
59
60 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
61 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
62 #define MLX4_IB_CARD_REV_A0 0xA0
63
64 MODULE_AUTHOR("Roland Dreier");
65 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
66 MODULE_LICENSE("Dual BSD/GPL");
67 MODULE_VERSION(DRV_VERSION);
68
69 int mlx4_ib_sm_guid_assign = 1;
70 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
71 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)");
72
73 static const char mlx4_ib_version[] =
74 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
75 DRV_VERSION " (" DRV_RELDATE ")\n";
76
77 struct update_gid_work {
78 struct work_struct work;
79 union ib_gid gids[128];
80 struct mlx4_ib_dev *dev;
81 int port;
82 };
83
84 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
85
86 static struct workqueue_struct *wq;
87
88 static void init_query_mad(struct ib_smp *mad)
89 {
90 mad->base_version = 1;
91 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
92 mad->class_version = 1;
93 mad->method = IB_MGMT_METHOD_GET;
94 }
95
96 static union ib_gid zgid;
97
98 static int check_flow_steering_support(struct mlx4_dev *dev)
99 {
100 int eth_num_ports = 0;
101 int ib_num_ports = 0;
102
103 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
104
105 if (dmfs) {
106 int i;
107 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
108 eth_num_ports++;
109 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
110 ib_num_ports++;
111 dmfs &= (!ib_num_ports ||
112 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
113 (!eth_num_ports ||
114 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
115 if (ib_num_ports && mlx4_is_mfunc(dev)) {
116 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
117 dmfs = 0;
118 }
119 }
120 return dmfs;
121 }
122
123 static int num_ib_ports(struct mlx4_dev *dev)
124 {
125 int ib_ports = 0;
126 int i;
127
128 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
129 ib_ports++;
130
131 return ib_ports;
132 }
133
134 static int mlx4_ib_query_device(struct ib_device *ibdev,
135 struct ib_device_attr *props)
136 {
137 struct mlx4_ib_dev *dev = to_mdev(ibdev);
138 struct ib_smp *in_mad = NULL;
139 struct ib_smp *out_mad = NULL;
140 int err = -ENOMEM;
141 int have_ib_ports;
142
143 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
144 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
145 if (!in_mad || !out_mad)
146 goto out;
147
148 init_query_mad(in_mad);
149 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
150
151 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
152 1, NULL, NULL, in_mad, out_mad);
153 if (err)
154 goto out;
155
156 memset(props, 0, sizeof *props);
157
158 have_ib_ports = num_ib_ports(dev->dev);
159
160 props->fw_ver = dev->dev->caps.fw_ver;
161 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
162 IB_DEVICE_PORT_ACTIVE_EVENT |
163 IB_DEVICE_SYS_IMAGE_GUID |
164 IB_DEVICE_RC_RNR_NAK_GEN |
165 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
166 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
167 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
168 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
169 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
170 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
171 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
172 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
173 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
174 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
175 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
176 if (dev->dev->caps.max_gso_sz &&
177 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
178 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
179 props->device_cap_flags |= IB_DEVICE_UD_TSO;
180 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
181 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
182 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
183 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
184 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
185 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
186 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
187 props->device_cap_flags |= IB_DEVICE_XRC;
188 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
189 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
190 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
191 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
192 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
193 else
194 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
195 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
196 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
197 }
198
199 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
200 0xffffff;
201 props->vendor_part_id = dev->dev->persist->pdev->device;
202 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
203 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
204
205 props->max_mr_size = ~0ull;
206 props->page_size_cap = dev->dev->caps.page_size_cap;
207 props->max_qp = dev->dev->quotas.qp;
208 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
209 props->max_sge = min(dev->dev->caps.max_sq_sg,
210 dev->dev->caps.max_rq_sg);
211 props->max_cq = dev->dev->quotas.cq;
212 props->max_cqe = dev->dev->caps.max_cqes;
213 props->max_mr = dev->dev->quotas.mpt;
214 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
215 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
216 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
217 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
218 props->max_srq = dev->dev->quotas.srq;
219 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
220 props->max_srq_sge = dev->dev->caps.max_srq_sge;
221 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
222 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
223 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
224 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
225 props->masked_atomic_cap = props->atomic_cap;
226 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
227 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
228 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
229 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
230 props->max_mcast_grp;
231 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
232
233 out:
234 kfree(in_mad);
235 kfree(out_mad);
236
237 return err;
238 }
239
240 static enum rdma_link_layer
241 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
242 {
243 struct mlx4_dev *dev = to_mdev(device)->dev;
244
245 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
246 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
247 }
248
249 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
250 struct ib_port_attr *props, int netw_view)
251 {
252 struct ib_smp *in_mad = NULL;
253 struct ib_smp *out_mad = NULL;
254 int ext_active_speed;
255 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
256 int err = -ENOMEM;
257
258 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
259 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
260 if (!in_mad || !out_mad)
261 goto out;
262
263 init_query_mad(in_mad);
264 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
265 in_mad->attr_mod = cpu_to_be32(port);
266
267 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
268 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
269
270 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
271 in_mad, out_mad);
272 if (err)
273 goto out;
274
275
276 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
277 props->lmc = out_mad->data[34] & 0x7;
278 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
279 props->sm_sl = out_mad->data[36] & 0xf;
280 props->state = out_mad->data[32] & 0xf;
281 props->phys_state = out_mad->data[33] >> 4;
282 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
283 if (netw_view)
284 props->gid_tbl_len = out_mad->data[50];
285 else
286 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
287 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
288 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
289 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
290 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
291 props->active_width = out_mad->data[31] & 0xf;
292 props->active_speed = out_mad->data[35] >> 4;
293 props->max_mtu = out_mad->data[41] & 0xf;
294 props->active_mtu = out_mad->data[36] >> 4;
295 props->subnet_timeout = out_mad->data[51] & 0x1f;
296 props->max_vl_num = out_mad->data[37] >> 4;
297 props->init_type_reply = out_mad->data[41] >> 4;
298
299 /* Check if extended speeds (EDR/FDR/...) are supported */
300 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
301 ext_active_speed = out_mad->data[62] >> 4;
302
303 switch (ext_active_speed) {
304 case 1:
305 props->active_speed = IB_SPEED_FDR;
306 break;
307 case 2:
308 props->active_speed = IB_SPEED_EDR;
309 break;
310 }
311 }
312
313 /* If reported active speed is QDR, check if is FDR-10 */
314 if (props->active_speed == IB_SPEED_QDR) {
315 init_query_mad(in_mad);
316 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
317 in_mad->attr_mod = cpu_to_be32(port);
318
319 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
320 NULL, NULL, in_mad, out_mad);
321 if (err)
322 goto out;
323
324 /* Checking LinkSpeedActive for FDR-10 */
325 if (out_mad->data[15] & 0x1)
326 props->active_speed = IB_SPEED_FDR10;
327 }
328
329 /* Avoid wrong speed value returned by FW if the IB link is down. */
330 if (props->state == IB_PORT_DOWN)
331 props->active_speed = IB_SPEED_SDR;
332
333 out:
334 kfree(in_mad);
335 kfree(out_mad);
336 return err;
337 }
338
339 static u8 state_to_phys_state(enum ib_port_state state)
340 {
341 return state == IB_PORT_ACTIVE ? 5 : 3;
342 }
343
344 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
345 struct ib_port_attr *props, int netw_view)
346 {
347
348 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
349 struct mlx4_ib_iboe *iboe = &mdev->iboe;
350 struct net_device *ndev;
351 enum ib_mtu tmp;
352 struct mlx4_cmd_mailbox *mailbox;
353 int err = 0;
354 int is_bonded = mlx4_is_bonded(mdev->dev);
355
356 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
357 if (IS_ERR(mailbox))
358 return PTR_ERR(mailbox);
359
360 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
361 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
362 MLX4_CMD_WRAPPED);
363 if (err)
364 goto out;
365
366 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ?
367 IB_WIDTH_4X : IB_WIDTH_1X;
368 props->active_speed = IB_SPEED_QDR;
369 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
370 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
371 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
372 props->pkey_tbl_len = 1;
373 props->max_mtu = IB_MTU_4096;
374 props->max_vl_num = 2;
375 props->state = IB_PORT_DOWN;
376 props->phys_state = state_to_phys_state(props->state);
377 props->active_mtu = IB_MTU_256;
378 if (is_bonded)
379 rtnl_lock(); /* required to get upper dev */
380 spin_lock_bh(&iboe->lock);
381 ndev = iboe->netdevs[port - 1];
382 if (ndev && is_bonded)
383 ndev = netdev_master_upper_dev_get(ndev);
384 if (!ndev)
385 goto out_unlock;
386
387 tmp = iboe_get_mtu(ndev->mtu);
388 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
389
390 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
391 IB_PORT_ACTIVE : IB_PORT_DOWN;
392 props->phys_state = state_to_phys_state(props->state);
393 out_unlock:
394 spin_unlock_bh(&iboe->lock);
395 if (is_bonded)
396 rtnl_unlock();
397 out:
398 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
399 return err;
400 }
401
402 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
403 struct ib_port_attr *props, int netw_view)
404 {
405 int err;
406
407 memset(props, 0, sizeof *props);
408
409 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
410 ib_link_query_port(ibdev, port, props, netw_view) :
411 eth_link_query_port(ibdev, port, props, netw_view);
412
413 return err;
414 }
415
416 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
417 struct ib_port_attr *props)
418 {
419 /* returns host view */
420 return __mlx4_ib_query_port(ibdev, port, props, 0);
421 }
422
423 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
424 union ib_gid *gid, int netw_view)
425 {
426 struct ib_smp *in_mad = NULL;
427 struct ib_smp *out_mad = NULL;
428 int err = -ENOMEM;
429 struct mlx4_ib_dev *dev = to_mdev(ibdev);
430 int clear = 0;
431 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
432
433 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
434 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
435 if (!in_mad || !out_mad)
436 goto out;
437
438 init_query_mad(in_mad);
439 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
440 in_mad->attr_mod = cpu_to_be32(port);
441
442 if (mlx4_is_mfunc(dev->dev) && netw_view)
443 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
444
445 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
446 if (err)
447 goto out;
448
449 memcpy(gid->raw, out_mad->data + 8, 8);
450
451 if (mlx4_is_mfunc(dev->dev) && !netw_view) {
452 if (index) {
453 /* For any index > 0, return the null guid */
454 err = 0;
455 clear = 1;
456 goto out;
457 }
458 }
459
460 init_query_mad(in_mad);
461 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
462 in_mad->attr_mod = cpu_to_be32(index / 8);
463
464 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
465 NULL, NULL, in_mad, out_mad);
466 if (err)
467 goto out;
468
469 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
470
471 out:
472 if (clear)
473 memset(gid->raw + 8, 0, 8);
474 kfree(in_mad);
475 kfree(out_mad);
476 return err;
477 }
478
479 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
480 union ib_gid *gid)
481 {
482 struct mlx4_ib_dev *dev = to_mdev(ibdev);
483
484 *gid = dev->iboe.gid_table[port - 1][index];
485
486 return 0;
487 }
488
489 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
490 union ib_gid *gid)
491 {
492 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
493 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
494 else
495 return iboe_query_gid(ibdev, port, index, gid);
496 }
497
498 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
499 u16 *pkey, int netw_view)
500 {
501 struct ib_smp *in_mad = NULL;
502 struct ib_smp *out_mad = NULL;
503 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
504 int err = -ENOMEM;
505
506 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
507 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
508 if (!in_mad || !out_mad)
509 goto out;
510
511 init_query_mad(in_mad);
512 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
513 in_mad->attr_mod = cpu_to_be32(index / 32);
514
515 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
516 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
517
518 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
519 in_mad, out_mad);
520 if (err)
521 goto out;
522
523 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
524
525 out:
526 kfree(in_mad);
527 kfree(out_mad);
528 return err;
529 }
530
531 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
532 {
533 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
534 }
535
536 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
537 struct ib_device_modify *props)
538 {
539 struct mlx4_cmd_mailbox *mailbox;
540 unsigned long flags;
541
542 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
543 return -EOPNOTSUPP;
544
545 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
546 return 0;
547
548 if (mlx4_is_slave(to_mdev(ibdev)->dev))
549 return -EOPNOTSUPP;
550
551 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
552 memcpy(ibdev->node_desc, props->node_desc, 64);
553 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
554
555 /*
556 * If possible, pass node desc to FW, so it can generate
557 * a 144 trap. If cmd fails, just ignore.
558 */
559 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
560 if (IS_ERR(mailbox))
561 return 0;
562
563 memcpy(mailbox->buf, props->node_desc, 64);
564 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
565 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
566
567 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
568
569 return 0;
570 }
571
572 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
573 u32 cap_mask)
574 {
575 struct mlx4_cmd_mailbox *mailbox;
576 int err;
577
578 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
579 if (IS_ERR(mailbox))
580 return PTR_ERR(mailbox);
581
582 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
583 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
584 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
585 } else {
586 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
587 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
588 }
589
590 err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
591 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
592
593 mlx4_free_cmd_mailbox(dev->dev, mailbox);
594 return err;
595 }
596
597 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
598 struct ib_port_modify *props)
599 {
600 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
601 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
602 struct ib_port_attr attr;
603 u32 cap_mask;
604 int err;
605
606 /* return OK if this is RoCE. CM calls ib_modify_port() regardless
607 * of whether port link layer is ETH or IB. For ETH ports, qkey
608 * violations and port capabilities are not meaningful.
609 */
610 if (is_eth)
611 return 0;
612
613 mutex_lock(&mdev->cap_mask_mutex);
614
615 err = mlx4_ib_query_port(ibdev, port, &attr);
616 if (err)
617 goto out;
618
619 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
620 ~props->clr_port_cap_mask;
621
622 err = mlx4_ib_SET_PORT(mdev, port,
623 !!(mask & IB_PORT_RESET_QKEY_CNTR),
624 cap_mask);
625
626 out:
627 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
628 return err;
629 }
630
631 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
632 struct ib_udata *udata)
633 {
634 struct mlx4_ib_dev *dev = to_mdev(ibdev);
635 struct mlx4_ib_ucontext *context;
636 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
637 struct mlx4_ib_alloc_ucontext_resp resp;
638 int err;
639
640 if (!dev->ib_active)
641 return ERR_PTR(-EAGAIN);
642
643 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
644 resp_v3.qp_tab_size = dev->dev->caps.num_qps;
645 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size;
646 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
647 } else {
648 resp.dev_caps = dev->dev->caps.userspace_caps;
649 resp.qp_tab_size = dev->dev->caps.num_qps;
650 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
651 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
652 resp.cqe_size = dev->dev->caps.cqe_size;
653 }
654
655 context = kmalloc(sizeof *context, GFP_KERNEL);
656 if (!context)
657 return ERR_PTR(-ENOMEM);
658
659 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
660 if (err) {
661 kfree(context);
662 return ERR_PTR(err);
663 }
664
665 INIT_LIST_HEAD(&context->db_page_list);
666 mutex_init(&context->db_page_mutex);
667
668 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
669 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
670 else
671 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
672
673 if (err) {
674 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
675 kfree(context);
676 return ERR_PTR(-EFAULT);
677 }
678
679 return &context->ibucontext;
680 }
681
682 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
683 {
684 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
685
686 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
687 kfree(context);
688
689 return 0;
690 }
691
692 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
693 {
694 struct mlx4_ib_dev *dev = to_mdev(context->device);
695
696 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
697 return -EINVAL;
698
699 if (vma->vm_pgoff == 0) {
700 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
701
702 if (io_remap_pfn_range(vma, vma->vm_start,
703 to_mucontext(context)->uar.pfn,
704 PAGE_SIZE, vma->vm_page_prot))
705 return -EAGAIN;
706 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
707 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
708
709 if (io_remap_pfn_range(vma, vma->vm_start,
710 to_mucontext(context)->uar.pfn +
711 dev->dev->caps.num_uars,
712 PAGE_SIZE, vma->vm_page_prot))
713 return -EAGAIN;
714 } else
715 return -EINVAL;
716
717 return 0;
718 }
719
720 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
721 struct ib_ucontext *context,
722 struct ib_udata *udata)
723 {
724 struct mlx4_ib_pd *pd;
725 int err;
726
727 pd = kmalloc(sizeof *pd, GFP_KERNEL);
728 if (!pd)
729 return ERR_PTR(-ENOMEM);
730
731 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
732 if (err) {
733 kfree(pd);
734 return ERR_PTR(err);
735 }
736
737 if (context)
738 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
739 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
740 kfree(pd);
741 return ERR_PTR(-EFAULT);
742 }
743
744 return &pd->ibpd;
745 }
746
747 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
748 {
749 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
750 kfree(pd);
751
752 return 0;
753 }
754
755 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
756 struct ib_ucontext *context,
757 struct ib_udata *udata)
758 {
759 struct mlx4_ib_xrcd *xrcd;
760 int err;
761
762 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
763 return ERR_PTR(-ENOSYS);
764
765 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
766 if (!xrcd)
767 return ERR_PTR(-ENOMEM);
768
769 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
770 if (err)
771 goto err1;
772
773 xrcd->pd = ib_alloc_pd(ibdev);
774 if (IS_ERR(xrcd->pd)) {
775 err = PTR_ERR(xrcd->pd);
776 goto err2;
777 }
778
779 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
780 if (IS_ERR(xrcd->cq)) {
781 err = PTR_ERR(xrcd->cq);
782 goto err3;
783 }
784
785 return &xrcd->ibxrcd;
786
787 err3:
788 ib_dealloc_pd(xrcd->pd);
789 err2:
790 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
791 err1:
792 kfree(xrcd);
793 return ERR_PTR(err);
794 }
795
796 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
797 {
798 ib_destroy_cq(to_mxrcd(xrcd)->cq);
799 ib_dealloc_pd(to_mxrcd(xrcd)->pd);
800 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
801 kfree(xrcd);
802
803 return 0;
804 }
805
806 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
807 {
808 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
809 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
810 struct mlx4_ib_gid_entry *ge;
811
812 ge = kzalloc(sizeof *ge, GFP_KERNEL);
813 if (!ge)
814 return -ENOMEM;
815
816 ge->gid = *gid;
817 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
818 ge->port = mqp->port;
819 ge->added = 1;
820 }
821
822 mutex_lock(&mqp->mutex);
823 list_add_tail(&ge->list, &mqp->gid_list);
824 mutex_unlock(&mqp->mutex);
825
826 return 0;
827 }
828
829 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
830 union ib_gid *gid)
831 {
832 struct net_device *ndev;
833 int ret = 0;
834
835 if (!mqp->port)
836 return 0;
837
838 spin_lock_bh(&mdev->iboe.lock);
839 ndev = mdev->iboe.netdevs[mqp->port - 1];
840 if (ndev)
841 dev_hold(ndev);
842 spin_unlock_bh(&mdev->iboe.lock);
843
844 if (ndev) {
845 ret = 1;
846 dev_put(ndev);
847 }
848
849 return ret;
850 }
851
852 struct mlx4_ib_steering {
853 struct list_head list;
854 struct mlx4_flow_reg_id reg_id;
855 union ib_gid gid;
856 };
857
858 static int parse_flow_attr(struct mlx4_dev *dev,
859 u32 qp_num,
860 union ib_flow_spec *ib_spec,
861 struct _rule_hw *mlx4_spec)
862 {
863 enum mlx4_net_trans_rule_id type;
864
865 switch (ib_spec->type) {
866 case IB_FLOW_SPEC_ETH:
867 type = MLX4_NET_TRANS_RULE_ID_ETH;
868 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
869 ETH_ALEN);
870 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
871 ETH_ALEN);
872 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
873 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
874 break;
875 case IB_FLOW_SPEC_IB:
876 type = MLX4_NET_TRANS_RULE_ID_IB;
877 mlx4_spec->ib.l3_qpn =
878 cpu_to_be32(qp_num);
879 mlx4_spec->ib.qpn_mask =
880 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
881 break;
882
883
884 case IB_FLOW_SPEC_IPV4:
885 type = MLX4_NET_TRANS_RULE_ID_IPV4;
886 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
887 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
888 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
889 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
890 break;
891
892 case IB_FLOW_SPEC_TCP:
893 case IB_FLOW_SPEC_UDP:
894 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
895 MLX4_NET_TRANS_RULE_ID_TCP :
896 MLX4_NET_TRANS_RULE_ID_UDP;
897 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
898 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
899 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
900 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
901 break;
902
903 default:
904 return -EINVAL;
905 }
906 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
907 mlx4_hw_rule_sz(dev, type) < 0)
908 return -EINVAL;
909 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
910 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
911 return mlx4_hw_rule_sz(dev, type);
912 }
913
914 struct default_rules {
915 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
916 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
917 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
918 __u8 link_layer;
919 };
920 static const struct default_rules default_table[] = {
921 {
922 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
923 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
924 .rules_create_list = {IB_FLOW_SPEC_IB},
925 .link_layer = IB_LINK_LAYER_INFINIBAND
926 }
927 };
928
929 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
930 struct ib_flow_attr *flow_attr)
931 {
932 int i, j, k;
933 void *ib_flow;
934 const struct default_rules *pdefault_rules = default_table;
935 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
936
937 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
938 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
939 memset(&field_types, 0, sizeof(field_types));
940
941 if (link_layer != pdefault_rules->link_layer)
942 continue;
943
944 ib_flow = flow_attr + 1;
945 /* we assume the specs are sorted */
946 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
947 j < flow_attr->num_of_specs; k++) {
948 union ib_flow_spec *current_flow =
949 (union ib_flow_spec *)ib_flow;
950
951 /* same layer but different type */
952 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
953 (pdefault_rules->mandatory_fields[k] &
954 IB_FLOW_SPEC_LAYER_MASK)) &&
955 (current_flow->type !=
956 pdefault_rules->mandatory_fields[k]))
957 goto out;
958
959 /* same layer, try match next one */
960 if (current_flow->type ==
961 pdefault_rules->mandatory_fields[k]) {
962 j++;
963 ib_flow +=
964 ((union ib_flow_spec *)ib_flow)->size;
965 }
966 }
967
968 ib_flow = flow_attr + 1;
969 for (j = 0; j < flow_attr->num_of_specs;
970 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
971 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
972 /* same layer and same type */
973 if (((union ib_flow_spec *)ib_flow)->type ==
974 pdefault_rules->mandatory_not_fields[k])
975 goto out;
976
977 return i;
978 }
979 out:
980 return -1;
981 }
982
983 static int __mlx4_ib_create_default_rules(
984 struct mlx4_ib_dev *mdev,
985 struct ib_qp *qp,
986 const struct default_rules *pdefault_rules,
987 struct _rule_hw *mlx4_spec) {
988 int size = 0;
989 int i;
990
991 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
992 int ret;
993 union ib_flow_spec ib_spec;
994 switch (pdefault_rules->rules_create_list[i]) {
995 case 0:
996 /* no rule */
997 continue;
998 case IB_FLOW_SPEC_IB:
999 ib_spec.type = IB_FLOW_SPEC_IB;
1000 ib_spec.size = sizeof(struct ib_flow_spec_ib);
1001
1002 break;
1003 default:
1004 /* invalid rule */
1005 return -EINVAL;
1006 }
1007 /* We must put empty rule, qpn is being ignored */
1008 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1009 mlx4_spec);
1010 if (ret < 0) {
1011 pr_info("invalid parsing\n");
1012 return -EINVAL;
1013 }
1014
1015 mlx4_spec = (void *)mlx4_spec + ret;
1016 size += ret;
1017 }
1018 return size;
1019 }
1020
1021 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1022 int domain,
1023 enum mlx4_net_trans_promisc_mode flow_type,
1024 u64 *reg_id)
1025 {
1026 int ret, i;
1027 int size = 0;
1028 void *ib_flow;
1029 struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1030 struct mlx4_cmd_mailbox *mailbox;
1031 struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1032 int default_flow;
1033
1034 static const u16 __mlx4_domain[] = {
1035 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1036 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1037 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1038 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1039 };
1040
1041 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1042 pr_err("Invalid priority value %d\n", flow_attr->priority);
1043 return -EINVAL;
1044 }
1045
1046 if (domain >= IB_FLOW_DOMAIN_NUM) {
1047 pr_err("Invalid domain value %d\n", domain);
1048 return -EINVAL;
1049 }
1050
1051 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1052 return -EINVAL;
1053
1054 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1055 if (IS_ERR(mailbox))
1056 return PTR_ERR(mailbox);
1057 ctrl = mailbox->buf;
1058
1059 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1060 flow_attr->priority);
1061 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1062 ctrl->port = flow_attr->port;
1063 ctrl->qpn = cpu_to_be32(qp->qp_num);
1064
1065 ib_flow = flow_attr + 1;
1066 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1067 /* Add default flows */
1068 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1069 if (default_flow >= 0) {
1070 ret = __mlx4_ib_create_default_rules(
1071 mdev, qp, default_table + default_flow,
1072 mailbox->buf + size);
1073 if (ret < 0) {
1074 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1075 return -EINVAL;
1076 }
1077 size += ret;
1078 }
1079 for (i = 0; i < flow_attr->num_of_specs; i++) {
1080 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1081 mailbox->buf + size);
1082 if (ret < 0) {
1083 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1084 return -EINVAL;
1085 }
1086 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1087 size += ret;
1088 }
1089
1090 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1091 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1092 MLX4_CMD_NATIVE);
1093 if (ret == -ENOMEM)
1094 pr_err("mcg table is full. Fail to register network rule.\n");
1095 else if (ret == -ENXIO)
1096 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1097 else if (ret)
1098 pr_err("Invalid argumant. Fail to register network rule.\n");
1099
1100 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1101 return ret;
1102 }
1103
1104 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1105 {
1106 int err;
1107 err = mlx4_cmd(dev, reg_id, 0, 0,
1108 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1109 MLX4_CMD_NATIVE);
1110 if (err)
1111 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1112 reg_id);
1113 return err;
1114 }
1115
1116 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1117 u64 *reg_id)
1118 {
1119 void *ib_flow;
1120 union ib_flow_spec *ib_spec;
1121 struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1122 int err = 0;
1123
1124 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1125 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1126 return 0; /* do nothing */
1127
1128 ib_flow = flow_attr + 1;
1129 ib_spec = (union ib_flow_spec *)ib_flow;
1130
1131 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1132 return 0; /* do nothing */
1133
1134 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1135 flow_attr->port, qp->qp_num,
1136 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1137 reg_id);
1138 return err;
1139 }
1140
1141 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1142 struct ib_flow_attr *flow_attr,
1143 int domain)
1144 {
1145 int err = 0, i = 0, j = 0;
1146 struct mlx4_ib_flow *mflow;
1147 enum mlx4_net_trans_promisc_mode type[2];
1148 struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1149 int is_bonded = mlx4_is_bonded(dev);
1150
1151 memset(type, 0, sizeof(type));
1152
1153 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1154 if (!mflow) {
1155 err = -ENOMEM;
1156 goto err_free;
1157 }
1158
1159 switch (flow_attr->type) {
1160 case IB_FLOW_ATTR_NORMAL:
1161 type[0] = MLX4_FS_REGULAR;
1162 break;
1163
1164 case IB_FLOW_ATTR_ALL_DEFAULT:
1165 type[0] = MLX4_FS_ALL_DEFAULT;
1166 break;
1167
1168 case IB_FLOW_ATTR_MC_DEFAULT:
1169 type[0] = MLX4_FS_MC_DEFAULT;
1170 break;
1171
1172 case IB_FLOW_ATTR_SNIFFER:
1173 type[0] = MLX4_FS_UC_SNIFFER;
1174 type[1] = MLX4_FS_MC_SNIFFER;
1175 break;
1176
1177 default:
1178 err = -EINVAL;
1179 goto err_free;
1180 }
1181
1182 while (i < ARRAY_SIZE(type) && type[i]) {
1183 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1184 &mflow->reg_id[i].id);
1185 if (err)
1186 goto err_create_flow;
1187 i++;
1188 if (is_bonded) {
1189 /* Application always sees one port so the mirror rule
1190 * must be on port #2
1191 */
1192 flow_attr->port = 2;
1193 err = __mlx4_ib_create_flow(qp, flow_attr,
1194 domain, type[j],
1195 &mflow->reg_id[j].mirror);
1196 flow_attr->port = 1;
1197 if (err)
1198 goto err_create_flow;
1199 j++;
1200 }
1201
1202 }
1203
1204 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1205 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1206 &mflow->reg_id[i].id);
1207 if (err)
1208 goto err_create_flow;
1209 i++;
1210 if (is_bonded) {
1211 flow_attr->port = 2;
1212 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1213 &mflow->reg_id[j].mirror);
1214 flow_attr->port = 1;
1215 if (err)
1216 goto err_create_flow;
1217 j++;
1218 }
1219 /* function to create mirror rule */
1220 }
1221
1222 return &mflow->ibflow;
1223
1224 err_create_flow:
1225 while (i) {
1226 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1227 mflow->reg_id[i].id);
1228 i--;
1229 }
1230
1231 while (j) {
1232 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1233 mflow->reg_id[j].mirror);
1234 j--;
1235 }
1236 err_free:
1237 kfree(mflow);
1238 return ERR_PTR(err);
1239 }
1240
1241 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1242 {
1243 int err, ret = 0;
1244 int i = 0;
1245 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1246 struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1247
1248 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1249 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1250 if (err)
1251 ret = err;
1252 if (mflow->reg_id[i].mirror) {
1253 err = __mlx4_ib_destroy_flow(mdev->dev,
1254 mflow->reg_id[i].mirror);
1255 if (err)
1256 ret = err;
1257 }
1258 i++;
1259 }
1260
1261 kfree(mflow);
1262 return ret;
1263 }
1264
1265 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1266 {
1267 int err;
1268 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1269 struct mlx4_dev *dev = mdev->dev;
1270 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1271 struct mlx4_ib_steering *ib_steering = NULL;
1272 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1273 struct mlx4_flow_reg_id reg_id;
1274
1275 if (mdev->dev->caps.steering_mode ==
1276 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1277 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1278 if (!ib_steering)
1279 return -ENOMEM;
1280 }
1281
1282 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1283 !!(mqp->flags &
1284 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1285 prot, &reg_id.id);
1286 if (err) {
1287 pr_err("multicast attach op failed, err %d\n", err);
1288 goto err_malloc;
1289 }
1290
1291 reg_id.mirror = 0;
1292 if (mlx4_is_bonded(dev)) {
1293 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1294 (mqp->port == 1) ? 2 : 1,
1295 !!(mqp->flags &
1296 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1297 prot, &reg_id.mirror);
1298 if (err)
1299 goto err_add;
1300 }
1301
1302 err = add_gid_entry(ibqp, gid);
1303 if (err)
1304 goto err_add;
1305
1306 if (ib_steering) {
1307 memcpy(ib_steering->gid.raw, gid->raw, 16);
1308 ib_steering->reg_id = reg_id;
1309 mutex_lock(&mqp->mutex);
1310 list_add(&ib_steering->list, &mqp->steering_rules);
1311 mutex_unlock(&mqp->mutex);
1312 }
1313 return 0;
1314
1315 err_add:
1316 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1317 prot, reg_id.id);
1318 if (reg_id.mirror)
1319 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1320 prot, reg_id.mirror);
1321 err_malloc:
1322 kfree(ib_steering);
1323
1324 return err;
1325 }
1326
1327 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1328 {
1329 struct mlx4_ib_gid_entry *ge;
1330 struct mlx4_ib_gid_entry *tmp;
1331 struct mlx4_ib_gid_entry *ret = NULL;
1332
1333 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1334 if (!memcmp(raw, ge->gid.raw, 16)) {
1335 ret = ge;
1336 break;
1337 }
1338 }
1339
1340 return ret;
1341 }
1342
1343 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1344 {
1345 int err;
1346 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1347 struct mlx4_dev *dev = mdev->dev;
1348 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1349 struct net_device *ndev;
1350 struct mlx4_ib_gid_entry *ge;
1351 struct mlx4_flow_reg_id reg_id = {0, 0};
1352 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1353
1354 if (mdev->dev->caps.steering_mode ==
1355 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1356 struct mlx4_ib_steering *ib_steering;
1357
1358 mutex_lock(&mqp->mutex);
1359 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1360 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1361 list_del(&ib_steering->list);
1362 break;
1363 }
1364 }
1365 mutex_unlock(&mqp->mutex);
1366 if (&ib_steering->list == &mqp->steering_rules) {
1367 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1368 return -EINVAL;
1369 }
1370 reg_id = ib_steering->reg_id;
1371 kfree(ib_steering);
1372 }
1373
1374 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1375 prot, reg_id.id);
1376 if (err)
1377 return err;
1378
1379 if (mlx4_is_bonded(dev)) {
1380 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1381 prot, reg_id.mirror);
1382 if (err)
1383 return err;
1384 }
1385
1386 mutex_lock(&mqp->mutex);
1387 ge = find_gid_entry(mqp, gid->raw);
1388 if (ge) {
1389 spin_lock_bh(&mdev->iboe.lock);
1390 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1391 if (ndev)
1392 dev_hold(ndev);
1393 spin_unlock_bh(&mdev->iboe.lock);
1394 if (ndev)
1395 dev_put(ndev);
1396 list_del(&ge->list);
1397 kfree(ge);
1398 } else
1399 pr_warn("could not find mgid entry\n");
1400
1401 mutex_unlock(&mqp->mutex);
1402
1403 return 0;
1404 }
1405
1406 static int init_node_data(struct mlx4_ib_dev *dev)
1407 {
1408 struct ib_smp *in_mad = NULL;
1409 struct ib_smp *out_mad = NULL;
1410 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1411 int err = -ENOMEM;
1412
1413 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1414 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1415 if (!in_mad || !out_mad)
1416 goto out;
1417
1418 init_query_mad(in_mad);
1419 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1420 if (mlx4_is_master(dev->dev))
1421 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1422
1423 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1424 if (err)
1425 goto out;
1426
1427 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1428
1429 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1430
1431 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1432 if (err)
1433 goto out;
1434
1435 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1436 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1437
1438 out:
1439 kfree(in_mad);
1440 kfree(out_mad);
1441 return err;
1442 }
1443
1444 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1445 char *buf)
1446 {
1447 struct mlx4_ib_dev *dev =
1448 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1449 return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
1450 }
1451
1452 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1453 char *buf)
1454 {
1455 struct mlx4_ib_dev *dev =
1456 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1457 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
1458 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
1459 (int) dev->dev->caps.fw_ver & 0xffff);
1460 }
1461
1462 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1463 char *buf)
1464 {
1465 struct mlx4_ib_dev *dev =
1466 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1467 return sprintf(buf, "%x\n", dev->dev->rev_id);
1468 }
1469
1470 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1471 char *buf)
1472 {
1473 struct mlx4_ib_dev *dev =
1474 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1475 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
1476 dev->dev->board_id);
1477 }
1478
1479 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1480 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1481 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1482 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1483
1484 static struct device_attribute *mlx4_class_attributes[] = {
1485 &dev_attr_hw_rev,
1486 &dev_attr_fw_ver,
1487 &dev_attr_hca_type,
1488 &dev_attr_board_id
1489 };
1490
1491 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id,
1492 struct net_device *dev)
1493 {
1494 memcpy(eui, dev->dev_addr, 3);
1495 memcpy(eui + 5, dev->dev_addr + 3, 3);
1496 if (vlan_id < 0x1000) {
1497 eui[3] = vlan_id >> 8;
1498 eui[4] = vlan_id & 0xff;
1499 } else {
1500 eui[3] = 0xff;
1501 eui[4] = 0xfe;
1502 }
1503 eui[0] ^= 2;
1504 }
1505
1506 static void update_gids_task(struct work_struct *work)
1507 {
1508 struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
1509 struct mlx4_cmd_mailbox *mailbox;
1510 union ib_gid *gids;
1511 int err;
1512 struct mlx4_dev *dev = gw->dev->dev;
1513 int is_bonded = mlx4_is_bonded(dev);
1514
1515 if (!gw->dev->ib_active)
1516 return;
1517
1518 mailbox = mlx4_alloc_cmd_mailbox(dev);
1519 if (IS_ERR(mailbox)) {
1520 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
1521 return;
1522 }
1523
1524 gids = mailbox->buf;
1525 memcpy(gids, gw->gids, sizeof gw->gids);
1526
1527 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1528 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1529 MLX4_CMD_WRAPPED);
1530 if (err)
1531 pr_warn("set port command failed\n");
1532 else
1533 if ((gw->port == 1) || !is_bonded)
1534 mlx4_ib_dispatch_event(gw->dev,
1535 is_bonded ? 1 : gw->port,
1536 IB_EVENT_GID_CHANGE);
1537
1538 mlx4_free_cmd_mailbox(dev, mailbox);
1539 kfree(gw);
1540 }
1541
1542 static void reset_gids_task(struct work_struct *work)
1543 {
1544 struct update_gid_work *gw =
1545 container_of(work, struct update_gid_work, work);
1546 struct mlx4_cmd_mailbox *mailbox;
1547 union ib_gid *gids;
1548 int err;
1549 struct mlx4_dev *dev = gw->dev->dev;
1550
1551 if (!gw->dev->ib_active)
1552 return;
1553
1554 mailbox = mlx4_alloc_cmd_mailbox(dev);
1555 if (IS_ERR(mailbox)) {
1556 pr_warn("reset gid table failed\n");
1557 goto free;
1558 }
1559
1560 gids = mailbox->buf;
1561 memcpy(gids, gw->gids, sizeof(gw->gids));
1562
1563 if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) ==
1564 IB_LINK_LAYER_ETHERNET) {
1565 err = mlx4_cmd(dev, mailbox->dma,
1566 MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1567 1, MLX4_CMD_SET_PORT,
1568 MLX4_CMD_TIME_CLASS_B,
1569 MLX4_CMD_WRAPPED);
1570 if (err)
1571 pr_warn(KERN_WARNING
1572 "set port %d command failed\n", gw->port);
1573 }
1574
1575 mlx4_free_cmd_mailbox(dev, mailbox);
1576 free:
1577 kfree(gw);
1578 }
1579
1580 static int update_gid_table(struct mlx4_ib_dev *dev, int port,
1581 union ib_gid *gid, int clear,
1582 int default_gid)
1583 {
1584 struct update_gid_work *work;
1585 int i;
1586 int need_update = 0;
1587 int free = -1;
1588 int found = -1;
1589 int max_gids;
1590
1591 if (default_gid) {
1592 free = 0;
1593 } else {
1594 max_gids = dev->dev->caps.gid_table_len[port];
1595 for (i = 1; i < max_gids; ++i) {
1596 if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid,
1597 sizeof(*gid)))
1598 found = i;
1599
1600 if (clear) {
1601 if (found >= 0) {
1602 need_update = 1;
1603 dev->iboe.gid_table[port - 1][found] =
1604 zgid;
1605 break;
1606 }
1607 } else {
1608 if (found >= 0)
1609 break;
1610
1611 if (free < 0 &&
1612 !memcmp(&dev->iboe.gid_table[port - 1][i],
1613 &zgid, sizeof(*gid)))
1614 free = i;
1615 }
1616 }
1617 }
1618
1619 if (found == -1 && !clear && free >= 0) {
1620 dev->iboe.gid_table[port - 1][free] = *gid;
1621 need_update = 1;
1622 }
1623
1624 if (!need_update)
1625 return 0;
1626
1627 work = kzalloc(sizeof(*work), GFP_ATOMIC);
1628 if (!work)
1629 return -ENOMEM;
1630
1631 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids));
1632 INIT_WORK(&work->work, update_gids_task);
1633 work->port = port;
1634 work->dev = dev;
1635 queue_work(wq, &work->work);
1636
1637 return 0;
1638 }
1639
1640 static void mlx4_make_default_gid(struct net_device *dev, union ib_gid *gid)
1641 {
1642 gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1643 mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev);
1644 }
1645
1646
1647 static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port)
1648 {
1649 struct update_gid_work *work;
1650
1651 work = kzalloc(sizeof(*work), GFP_ATOMIC);
1652 if (!work)
1653 return -ENOMEM;
1654
1655 memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids));
1656 memset(work->gids, 0, sizeof(work->gids));
1657 INIT_WORK(&work->work, reset_gids_task);
1658 work->dev = dev;
1659 work->port = port;
1660 queue_work(wq, &work->work);
1661 return 0;
1662 }
1663
1664 static int mlx4_ib_addr_event(int event, struct net_device *event_netdev,
1665 struct mlx4_ib_dev *ibdev, union ib_gid *gid)
1666 {
1667 struct mlx4_ib_iboe *iboe;
1668 int port = 0;
1669 struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ?
1670 rdma_vlan_dev_real_dev(event_netdev) :
1671 event_netdev;
1672 union ib_gid default_gid;
1673
1674 mlx4_make_default_gid(real_dev, &default_gid);
1675
1676 if (!memcmp(gid, &default_gid, sizeof(*gid)))
1677 return 0;
1678
1679 if (event != NETDEV_DOWN && event != NETDEV_UP)
1680 return 0;
1681
1682 if ((real_dev != event_netdev) &&
1683 (event == NETDEV_DOWN) &&
1684 rdma_link_local_addr((struct in6_addr *)gid))
1685 return 0;
1686
1687 iboe = &ibdev->iboe;
1688 spin_lock_bh(&iboe->lock);
1689
1690 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1691 if ((netif_is_bond_master(real_dev) &&
1692 (real_dev == iboe->masters[port - 1])) ||
1693 (!netif_is_bond_master(real_dev) &&
1694 (real_dev == iboe->netdevs[port - 1])))
1695 update_gid_table(ibdev, port, gid,
1696 event == NETDEV_DOWN, 0);
1697
1698 spin_unlock_bh(&iboe->lock);
1699 return 0;
1700
1701 }
1702
1703 static u8 mlx4_ib_get_dev_port(struct net_device *dev,
1704 struct mlx4_ib_dev *ibdev)
1705 {
1706 u8 port = 0;
1707 struct mlx4_ib_iboe *iboe;
1708 struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ?
1709 rdma_vlan_dev_real_dev(dev) : dev;
1710
1711 iboe = &ibdev->iboe;
1712
1713 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1714 if ((netif_is_bond_master(real_dev) &&
1715 (real_dev == iboe->masters[port - 1])) ||
1716 (!netif_is_bond_master(real_dev) &&
1717 (real_dev == iboe->netdevs[port - 1])))
1718 break;
1719
1720 if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1721 return 0;
1722 else
1723 return port;
1724 }
1725
1726 static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event,
1727 void *ptr)
1728 {
1729 struct mlx4_ib_dev *ibdev;
1730 struct in_ifaddr *ifa = ptr;
1731 union ib_gid gid;
1732 struct net_device *event_netdev = ifa->ifa_dev->dev;
1733
1734 ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
1735
1736 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet);
1737
1738 mlx4_ib_addr_event(event, event_netdev, ibdev, &gid);
1739 return NOTIFY_DONE;
1740 }
1741
1742 #if IS_ENABLED(CONFIG_IPV6)
1743 static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event,
1744 void *ptr)
1745 {
1746 struct mlx4_ib_dev *ibdev;
1747 struct inet6_ifaddr *ifa = ptr;
1748 union ib_gid *gid = (union ib_gid *)&ifa->addr;
1749 struct net_device *event_netdev = ifa->idev->dev;
1750
1751 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6);
1752
1753 mlx4_ib_addr_event(event, event_netdev, ibdev, gid);
1754 return NOTIFY_DONE;
1755 }
1756 #endif
1757
1758 #define MLX4_IB_INVALID_MAC ((u64)-1)
1759 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
1760 struct net_device *dev,
1761 int port)
1762 {
1763 u64 new_smac = 0;
1764 u64 release_mac = MLX4_IB_INVALID_MAC;
1765 struct mlx4_ib_qp *qp;
1766
1767 read_lock(&dev_base_lock);
1768 new_smac = mlx4_mac_to_u64(dev->dev_addr);
1769 read_unlock(&dev_base_lock);
1770
1771 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
1772
1773 /* no need for update QP1 and mac registration in non-SRIOV */
1774 if (!mlx4_is_mfunc(ibdev->dev))
1775 return;
1776
1777 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
1778 qp = ibdev->qp1_proxy[port - 1];
1779 if (qp) {
1780 int new_smac_index;
1781 u64 old_smac;
1782 struct mlx4_update_qp_params update_params;
1783
1784 mutex_lock(&qp->mutex);
1785 old_smac = qp->pri.smac;
1786 if (new_smac == old_smac)
1787 goto unlock;
1788
1789 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
1790
1791 if (new_smac_index < 0)
1792 goto unlock;
1793
1794 update_params.smac_index = new_smac_index;
1795 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
1796 &update_params)) {
1797 release_mac = new_smac;
1798 goto unlock;
1799 }
1800 /* if old port was zero, no mac was yet registered for this QP */
1801 if (qp->pri.smac_port)
1802 release_mac = old_smac;
1803 qp->pri.smac = new_smac;
1804 qp->pri.smac_port = port;
1805 qp->pri.smac_index = new_smac_index;
1806 }
1807
1808 unlock:
1809 if (release_mac != MLX4_IB_INVALID_MAC)
1810 mlx4_unregister_mac(ibdev->dev, port, release_mac);
1811 if (qp)
1812 mutex_unlock(&qp->mutex);
1813 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
1814 }
1815
1816 static void mlx4_ib_get_dev_addr(struct net_device *dev,
1817 struct mlx4_ib_dev *ibdev, u8 port)
1818 {
1819 struct in_device *in_dev;
1820 #if IS_ENABLED(CONFIG_IPV6)
1821 struct inet6_dev *in6_dev;
1822 union ib_gid *pgid;
1823 struct inet6_ifaddr *ifp;
1824 union ib_gid default_gid;
1825 #endif
1826 union ib_gid gid;
1827
1828
1829 if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1830 return;
1831
1832 /* IPv4 gids */
1833 in_dev = in_dev_get(dev);
1834 if (in_dev) {
1835 for_ifa(in_dev) {
1836 /*ifa->ifa_address;*/
1837 ipv6_addr_set_v4mapped(ifa->ifa_address,
1838 (struct in6_addr *)&gid);
1839 update_gid_table(ibdev, port, &gid, 0, 0);
1840 }
1841 endfor_ifa(in_dev);
1842 in_dev_put(in_dev);
1843 }
1844 #if IS_ENABLED(CONFIG_IPV6)
1845 mlx4_make_default_gid(dev, &default_gid);
1846 /* IPv6 gids */
1847 in6_dev = in6_dev_get(dev);
1848 if (in6_dev) {
1849 read_lock_bh(&in6_dev->lock);
1850 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) {
1851 pgid = (union ib_gid *)&ifp->addr;
1852 if (!memcmp(pgid, &default_gid, sizeof(*pgid)))
1853 continue;
1854 update_gid_table(ibdev, port, pgid, 0, 0);
1855 }
1856 read_unlock_bh(&in6_dev->lock);
1857 in6_dev_put(in6_dev);
1858 }
1859 #endif
1860 }
1861
1862 static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev,
1863 struct net_device *dev, u8 port)
1864 {
1865 union ib_gid gid;
1866 mlx4_make_default_gid(dev, &gid);
1867 update_gid_table(ibdev, port, &gid, 0, 1);
1868 }
1869
1870 static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev)
1871 {
1872 struct net_device *dev;
1873 struct mlx4_ib_iboe *iboe = &ibdev->iboe;
1874 int i;
1875 int err = 0;
1876
1877 for (i = 1; i <= ibdev->num_ports; ++i) {
1878 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) ==
1879 IB_LINK_LAYER_ETHERNET) {
1880 err = reset_gid_table(ibdev, i);
1881 if (err)
1882 goto out;
1883 }
1884 }
1885
1886 read_lock(&dev_base_lock);
1887 spin_lock_bh(&iboe->lock);
1888
1889 for_each_netdev(&init_net, dev) {
1890 u8 port = mlx4_ib_get_dev_port(dev, ibdev);
1891 /* port will be non-zero only for ETH ports */
1892 if (port) {
1893 mlx4_ib_set_default_gid(ibdev, dev, port);
1894 mlx4_ib_get_dev_addr(dev, ibdev, port);
1895 }
1896 }
1897
1898 spin_unlock_bh(&iboe->lock);
1899 read_unlock(&dev_base_lock);
1900 out:
1901 return err;
1902 }
1903
1904 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
1905 struct net_device *dev,
1906 unsigned long event)
1907
1908 {
1909 struct mlx4_ib_iboe *iboe;
1910 int update_qps_port = -1;
1911 int port;
1912
1913 iboe = &ibdev->iboe;
1914
1915 spin_lock_bh(&iboe->lock);
1916 mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1917 enum ib_port_state port_state = IB_PORT_NOP;
1918 struct net_device *old_master = iboe->masters[port - 1];
1919 struct net_device *curr_netdev;
1920 struct net_device *curr_master;
1921
1922 iboe->netdevs[port - 1] =
1923 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1924 if (iboe->netdevs[port - 1])
1925 mlx4_ib_set_default_gid(ibdev,
1926 iboe->netdevs[port - 1], port);
1927 curr_netdev = iboe->netdevs[port - 1];
1928
1929 if (iboe->netdevs[port - 1] &&
1930 netif_is_bond_slave(iboe->netdevs[port - 1])) {
1931 iboe->masters[port - 1] = netdev_master_upper_dev_get(
1932 iboe->netdevs[port - 1]);
1933 } else {
1934 iboe->masters[port - 1] = NULL;
1935 }
1936 curr_master = iboe->masters[port - 1];
1937
1938 if (dev == iboe->netdevs[port - 1] &&
1939 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
1940 event == NETDEV_UP || event == NETDEV_CHANGE))
1941 update_qps_port = port;
1942
1943 if (curr_netdev) {
1944 port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ?
1945 IB_PORT_ACTIVE : IB_PORT_DOWN;
1946 mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1947 if (curr_master) {
1948 /* if using bonding/team and a slave port is down, we
1949 * don't want the bond IP based gids in the table since
1950 * flows that select port by gid may get the down port.
1951 */
1952 if (port_state == IB_PORT_DOWN &&
1953 !mlx4_is_bonded(ibdev->dev)) {
1954 reset_gid_table(ibdev, port);
1955 mlx4_ib_set_default_gid(ibdev,
1956 curr_netdev,
1957 port);
1958 } else {
1959 /* gids from the upper dev (bond/team)
1960 * should appear in port's gid table
1961 */
1962 mlx4_ib_get_dev_addr(curr_master,
1963 ibdev, port);
1964 }
1965 }
1966 /* if bonding is used it is possible that we add it to
1967 * masters only after IP address is assigned to the
1968 * net bonding interface.
1969 */
1970 if (curr_master && (old_master != curr_master)) {
1971 reset_gid_table(ibdev, port);
1972 mlx4_ib_set_default_gid(ibdev,
1973 curr_netdev, port);
1974 mlx4_ib_get_dev_addr(curr_master, ibdev, port);
1975 }
1976
1977 if (!curr_master && (old_master != curr_master)) {
1978 reset_gid_table(ibdev, port);
1979 mlx4_ib_set_default_gid(ibdev,
1980 curr_netdev, port);
1981 mlx4_ib_get_dev_addr(curr_netdev, ibdev, port);
1982 }
1983 } else {
1984 reset_gid_table(ibdev, port);
1985 }
1986 }
1987
1988 spin_unlock_bh(&iboe->lock);
1989
1990 if (update_qps_port > 0)
1991 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
1992 }
1993
1994 static int mlx4_ib_netdev_event(struct notifier_block *this,
1995 unsigned long event, void *ptr)
1996 {
1997 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1998 struct mlx4_ib_dev *ibdev;
1999
2000 if (!net_eq(dev_net(dev), &init_net))
2001 return NOTIFY_DONE;
2002
2003 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2004 mlx4_ib_scan_netdevs(ibdev, dev, event);
2005
2006 return NOTIFY_DONE;
2007 }
2008
2009 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2010 {
2011 int port;
2012 int slave;
2013 int i;
2014
2015 if (mlx4_is_master(ibdev->dev)) {
2016 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2017 ++slave) {
2018 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2019 for (i = 0;
2020 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2021 ++i) {
2022 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2023 /* master has the identity virt2phys pkey mapping */
2024 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2025 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2026 mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2027 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2028 }
2029 }
2030 }
2031 /* initialize pkey cache */
2032 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2033 for (i = 0;
2034 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2035 ++i)
2036 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2037 (i) ? 0 : 0xFFFF;
2038 }
2039 }
2040 }
2041
2042 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2043 {
2044 char name[80];
2045 int eq_per_port = 0;
2046 int added_eqs = 0;
2047 int total_eqs = 0;
2048 int i, j, eq;
2049
2050 /* Legacy mode or comp_pool is not large enough */
2051 if (dev->caps.comp_pool == 0 ||
2052 dev->caps.num_ports > dev->caps.comp_pool)
2053 return;
2054
2055 eq_per_port = dev->caps.comp_pool / dev->caps.num_ports;
2056
2057 /* Init eq table */
2058 added_eqs = 0;
2059 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2060 added_eqs += eq_per_port;
2061
2062 total_eqs = dev->caps.num_comp_vectors + added_eqs;
2063
2064 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
2065 if (!ibdev->eq_table)
2066 return;
2067
2068 ibdev->eq_added = added_eqs;
2069
2070 eq = 0;
2071 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
2072 for (j = 0; j < eq_per_port; j++) {
2073 snprintf(name, sizeof(name), "mlx4-ib-%d-%d@%s",
2074 i, j, dev->persist->pdev->bus->name);
2075 /* Set IRQ for specific name (per ring) */
2076 if (mlx4_assign_eq(dev, name, NULL,
2077 &ibdev->eq_table[eq])) {
2078 /* Use legacy (same as mlx4_en driver) */
2079 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
2080 ibdev->eq_table[eq] =
2081 (eq % dev->caps.num_comp_vectors);
2082 }
2083 eq++;
2084 }
2085 }
2086
2087 /* Fill the reset of the vector with legacy EQ */
2088 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
2089 ibdev->eq_table[eq++] = i;
2090
2091 /* Advertise the new number of EQs to clients */
2092 ibdev->ib_dev.num_comp_vectors = total_eqs;
2093 }
2094
2095 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2096 {
2097 int i;
2098
2099 /* no additional eqs were added */
2100 if (!ibdev->eq_table)
2101 return;
2102
2103 /* Reset the advertised EQ number */
2104 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
2105
2106 /* Free only the added eqs */
2107 for (i = 0; i < ibdev->eq_added; i++) {
2108 /* Don't free legacy eqs if used */
2109 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
2110 continue;
2111 mlx4_release_eq(dev, ibdev->eq_table[i]);
2112 }
2113
2114 kfree(ibdev->eq_table);
2115 }
2116
2117 static void *mlx4_ib_add(struct mlx4_dev *dev)
2118 {
2119 struct mlx4_ib_dev *ibdev;
2120 int num_ports = 0;
2121 int i, j;
2122 int err;
2123 struct mlx4_ib_iboe *iboe;
2124 int ib_num_ports = 0;
2125 int num_req_counters;
2126
2127 pr_info_once("%s", mlx4_ib_version);
2128
2129 num_ports = 0;
2130 mlx4_foreach_ib_transport_port(i, dev)
2131 num_ports++;
2132
2133 /* No point in registering a device with no ports... */
2134 if (num_ports == 0)
2135 return NULL;
2136
2137 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2138 if (!ibdev) {
2139 dev_err(&dev->persist->pdev->dev,
2140 "Device struct alloc failed\n");
2141 return NULL;
2142 }
2143
2144 iboe = &ibdev->iboe;
2145
2146 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2147 goto err_dealloc;
2148
2149 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2150 goto err_pd;
2151
2152 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2153 PAGE_SIZE);
2154 if (!ibdev->uar_map)
2155 goto err_uar;
2156 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2157
2158 ibdev->dev = dev;
2159 ibdev->bond_next_port = 0;
2160
2161 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2162 ibdev->ib_dev.owner = THIS_MODULE;
2163 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
2164 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
2165 ibdev->num_ports = num_ports;
2166 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ?
2167 1 : ibdev->num_ports;
2168 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
2169 ibdev->ib_dev.dma_device = &dev->persist->pdev->dev;
2170
2171 if (dev->caps.userspace_caps)
2172 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2173 else
2174 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2175
2176 ibdev->ib_dev.uverbs_cmd_mask =
2177 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
2178 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
2179 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
2180 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
2181 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
2182 (1ull << IB_USER_VERBS_CMD_REG_MR) |
2183 (1ull << IB_USER_VERBS_CMD_REREG_MR) |
2184 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
2185 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2186 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
2187 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
2188 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
2189 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
2190 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
2191 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
2192 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
2193 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
2194 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
2195 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
2196 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
2197 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
2198 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
2199 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
2200 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2201
2202 ibdev->ib_dev.query_device = mlx4_ib_query_device;
2203 ibdev->ib_dev.query_port = mlx4_ib_query_port;
2204 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
2205 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
2206 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
2207 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
2208 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
2209 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
2210 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
2211 ibdev->ib_dev.mmap = mlx4_ib_mmap;
2212 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
2213 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
2214 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
2215 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
2216 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
2217 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
2218 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
2219 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
2220 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
2221 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
2222 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
2223 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
2224 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
2225 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
2226 ibdev->ib_dev.post_send = mlx4_ib_post_send;
2227 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
2228 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
2229 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
2230 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
2231 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
2232 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
2233 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
2234 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
2235 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
2236 ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr;
2237 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
2238 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
2239 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
2240 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
2241 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
2242 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
2243 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
2244
2245 if (!mlx4_is_slave(ibdev->dev)) {
2246 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
2247 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
2248 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
2249 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
2250 }
2251
2252 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2253 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2254 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2255 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
2256 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2257
2258 ibdev->ib_dev.uverbs_cmd_mask |=
2259 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2260 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2261 }
2262
2263 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2264 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2265 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2266 ibdev->ib_dev.uverbs_cmd_mask |=
2267 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2268 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2269 }
2270
2271 if (check_flow_steering_support(dev)) {
2272 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2273 ibdev->ib_dev.create_flow = mlx4_ib_create_flow;
2274 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow;
2275
2276 ibdev->ib_dev.uverbs_ex_cmd_mask |=
2277 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2278 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2279 }
2280
2281 mlx4_ib_alloc_eqs(dev, ibdev);
2282
2283 spin_lock_init(&iboe->lock);
2284
2285 if (init_node_data(ibdev))
2286 goto err_map;
2287
2288 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2289 for (i = 0; i < num_req_counters; ++i) {
2290 mutex_init(&ibdev->qp1_proxy_lock[i]);
2291 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2292 IB_LINK_LAYER_ETHERNET) {
2293 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
2294 if (err)
2295 ibdev->counters[i] = -1;
2296 } else {
2297 ibdev->counters[i] = -1;
2298 }
2299 }
2300 if (mlx4_is_bonded(dev))
2301 for (i = 1; i < ibdev->num_ports ; ++i)
2302 ibdev->counters[i] = ibdev->counters[0];
2303
2304
2305 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2306 ib_num_ports++;
2307
2308 spin_lock_init(&ibdev->sm_lock);
2309 mutex_init(&ibdev->cap_mask_mutex);
2310 INIT_LIST_HEAD(&ibdev->qp_list);
2311 spin_lock_init(&ibdev->reset_flow_resource_lock);
2312
2313 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2314 ib_num_ports) {
2315 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2316 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2317 MLX4_IB_UC_STEER_QPN_ALIGN,
2318 &ibdev->steer_qpn_base, 0);
2319 if (err)
2320 goto err_counter;
2321
2322 ibdev->ib_uc_qpns_bitmap =
2323 kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2324 sizeof(long),
2325 GFP_KERNEL);
2326 if (!ibdev->ib_uc_qpns_bitmap) {
2327 dev_err(&dev->persist->pdev->dev,
2328 "bit map alloc failed\n");
2329 goto err_steer_qp_release;
2330 }
2331
2332 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2333
2334 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2335 dev, ibdev->steer_qpn_base,
2336 ibdev->steer_qpn_base +
2337 ibdev->steer_qpn_count - 1);
2338 if (err)
2339 goto err_steer_free_bitmap;
2340 }
2341
2342 for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2343 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2344
2345 if (ib_register_device(&ibdev->ib_dev, NULL))
2346 goto err_steer_free_bitmap;
2347
2348 if (mlx4_ib_mad_init(ibdev))
2349 goto err_reg;
2350
2351 if (mlx4_ib_init_sriov(ibdev))
2352 goto err_mad;
2353
2354 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) {
2355 if (!iboe->nb.notifier_call) {
2356 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2357 err = register_netdevice_notifier(&iboe->nb);
2358 if (err) {
2359 iboe->nb.notifier_call = NULL;
2360 goto err_notif;
2361 }
2362 }
2363 if (!iboe->nb_inet.notifier_call) {
2364 iboe->nb_inet.notifier_call = mlx4_ib_inet_event;
2365 err = register_inetaddr_notifier(&iboe->nb_inet);
2366 if (err) {
2367 iboe->nb_inet.notifier_call = NULL;
2368 goto err_notif;
2369 }
2370 }
2371 #if IS_ENABLED(CONFIG_IPV6)
2372 if (!iboe->nb_inet6.notifier_call) {
2373 iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event;
2374 err = register_inet6addr_notifier(&iboe->nb_inet6);
2375 if (err) {
2376 iboe->nb_inet6.notifier_call = NULL;
2377 goto err_notif;
2378 }
2379 }
2380 #endif
2381 if (mlx4_ib_init_gid_table(ibdev))
2382 goto err_notif;
2383 }
2384
2385 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2386 if (device_create_file(&ibdev->ib_dev.dev,
2387 mlx4_class_attributes[j]))
2388 goto err_notif;
2389 }
2390
2391 ibdev->ib_active = true;
2392
2393 if (mlx4_is_mfunc(ibdev->dev))
2394 init_pkeys(ibdev);
2395
2396 /* create paravirt contexts for any VFs which are active */
2397 if (mlx4_is_master(ibdev->dev)) {
2398 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2399 if (j == mlx4_master_func_num(ibdev->dev))
2400 continue;
2401 if (mlx4_is_slave_active(ibdev->dev, j))
2402 do_slave_init(ibdev, j, 1);
2403 }
2404 }
2405 return ibdev;
2406
2407 err_notif:
2408 if (ibdev->iboe.nb.notifier_call) {
2409 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2410 pr_warn("failure unregistering notifier\n");
2411 ibdev->iboe.nb.notifier_call = NULL;
2412 }
2413 if (ibdev->iboe.nb_inet.notifier_call) {
2414 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2415 pr_warn("failure unregistering notifier\n");
2416 ibdev->iboe.nb_inet.notifier_call = NULL;
2417 }
2418 #if IS_ENABLED(CONFIG_IPV6)
2419 if (ibdev->iboe.nb_inet6.notifier_call) {
2420 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2421 pr_warn("failure unregistering notifier\n");
2422 ibdev->iboe.nb_inet6.notifier_call = NULL;
2423 }
2424 #endif
2425 flush_workqueue(wq);
2426
2427 mlx4_ib_close_sriov(ibdev);
2428
2429 err_mad:
2430 mlx4_ib_mad_cleanup(ibdev);
2431
2432 err_reg:
2433 ib_unregister_device(&ibdev->ib_dev);
2434
2435 err_steer_free_bitmap:
2436 kfree(ibdev->ib_uc_qpns_bitmap);
2437
2438 err_steer_qp_release:
2439 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2440 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2441 ibdev->steer_qpn_count);
2442 err_counter:
2443 for (; i; --i)
2444 if (ibdev->counters[i - 1] != -1)
2445 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
2446
2447 err_map:
2448 iounmap(ibdev->uar_map);
2449
2450 err_uar:
2451 mlx4_uar_free(dev, &ibdev->priv_uar);
2452
2453 err_pd:
2454 mlx4_pd_free(dev, ibdev->priv_pdn);
2455
2456 err_dealloc:
2457 ib_dealloc_device(&ibdev->ib_dev);
2458
2459 return NULL;
2460 }
2461
2462 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2463 {
2464 int offset;
2465
2466 WARN_ON(!dev->ib_uc_qpns_bitmap);
2467
2468 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2469 dev->steer_qpn_count,
2470 get_count_order(count));
2471 if (offset < 0)
2472 return offset;
2473
2474 *qpn = dev->steer_qpn_base + offset;
2475 return 0;
2476 }
2477
2478 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2479 {
2480 if (!qpn ||
2481 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2482 return;
2483
2484 BUG_ON(qpn < dev->steer_qpn_base);
2485
2486 bitmap_release_region(dev->ib_uc_qpns_bitmap,
2487 qpn - dev->steer_qpn_base,
2488 get_count_order(count));
2489 }
2490
2491 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2492 int is_attach)
2493 {
2494 int err;
2495 size_t flow_size;
2496 struct ib_flow_attr *flow = NULL;
2497 struct ib_flow_spec_ib *ib_spec;
2498
2499 if (is_attach) {
2500 flow_size = sizeof(struct ib_flow_attr) +
2501 sizeof(struct ib_flow_spec_ib);
2502 flow = kzalloc(flow_size, GFP_KERNEL);
2503 if (!flow)
2504 return -ENOMEM;
2505 flow->port = mqp->port;
2506 flow->num_of_specs = 1;
2507 flow->size = flow_size;
2508 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2509 ib_spec->type = IB_FLOW_SPEC_IB;
2510 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2511 /* Add an empty rule for IB L2 */
2512 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2513
2514 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2515 IB_FLOW_DOMAIN_NIC,
2516 MLX4_FS_REGULAR,
2517 &mqp->reg_id);
2518 } else {
2519 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2520 }
2521 kfree(flow);
2522 return err;
2523 }
2524
2525 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2526 {
2527 struct mlx4_ib_dev *ibdev = ibdev_ptr;
2528 int p;
2529
2530 ibdev->ib_active = false;
2531 flush_workqueue(wq);
2532
2533 mlx4_ib_close_sriov(ibdev);
2534 mlx4_ib_mad_cleanup(ibdev);
2535 ib_unregister_device(&ibdev->ib_dev);
2536 if (ibdev->iboe.nb.notifier_call) {
2537 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2538 pr_warn("failure unregistering notifier\n");
2539 ibdev->iboe.nb.notifier_call = NULL;
2540 }
2541
2542 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2543 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2544 ibdev->steer_qpn_count);
2545 kfree(ibdev->ib_uc_qpns_bitmap);
2546 }
2547
2548 if (ibdev->iboe.nb_inet.notifier_call) {
2549 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2550 pr_warn("failure unregistering notifier\n");
2551 ibdev->iboe.nb_inet.notifier_call = NULL;
2552 }
2553 #if IS_ENABLED(CONFIG_IPV6)
2554 if (ibdev->iboe.nb_inet6.notifier_call) {
2555 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2556 pr_warn("failure unregistering notifier\n");
2557 ibdev->iboe.nb_inet6.notifier_call = NULL;
2558 }
2559 #endif
2560
2561 iounmap(ibdev->uar_map);
2562 for (p = 0; p < ibdev->num_ports; ++p)
2563 if (ibdev->counters[p] != -1)
2564 mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
2565 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2566 mlx4_CLOSE_PORT(dev, p);
2567
2568 mlx4_ib_free_eqs(dev, ibdev);
2569
2570 mlx4_uar_free(dev, &ibdev->priv_uar);
2571 mlx4_pd_free(dev, ibdev->priv_pdn);
2572 ib_dealloc_device(&ibdev->ib_dev);
2573 }
2574
2575 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2576 {
2577 struct mlx4_ib_demux_work **dm = NULL;
2578 struct mlx4_dev *dev = ibdev->dev;
2579 int i;
2580 unsigned long flags;
2581 struct mlx4_active_ports actv_ports;
2582 unsigned int ports;
2583 unsigned int first_port;
2584
2585 if (!mlx4_is_master(dev))
2586 return;
2587
2588 actv_ports = mlx4_get_active_ports(dev, slave);
2589 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2590 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2591
2592 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
2593 if (!dm) {
2594 pr_err("failed to allocate memory for tunneling qp update\n");
2595 goto out;
2596 }
2597
2598 for (i = 0; i < ports; i++) {
2599 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
2600 if (!dm[i]) {
2601 pr_err("failed to allocate memory for tunneling qp update work struct\n");
2602 for (i = 0; i < dev->caps.num_ports; i++) {
2603 if (dm[i])
2604 kfree(dm[i]);
2605 }
2606 goto out;
2607 }
2608 }
2609 /* initialize or tear down tunnel QPs for the slave */
2610 for (i = 0; i < ports; i++) {
2611 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
2612 dm[i]->port = first_port + i + 1;
2613 dm[i]->slave = slave;
2614 dm[i]->do_init = do_init;
2615 dm[i]->dev = ibdev;
2616 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
2617 if (!ibdev->sriov.is_going_down)
2618 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
2619 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2620 }
2621 out:
2622 kfree(dm);
2623 return;
2624 }
2625
2626 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
2627 {
2628 struct mlx4_ib_qp *mqp;
2629 unsigned long flags_qp;
2630 unsigned long flags_cq;
2631 struct mlx4_ib_cq *send_mcq, *recv_mcq;
2632 struct list_head cq_notify_list;
2633 struct mlx4_cq *mcq;
2634 unsigned long flags;
2635
2636 pr_warn("mlx4_ib_handle_catas_error was started\n");
2637 INIT_LIST_HEAD(&cq_notify_list);
2638
2639 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
2640 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
2641
2642 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
2643 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
2644 if (mqp->sq.tail != mqp->sq.head) {
2645 send_mcq = to_mcq(mqp->ibqp.send_cq);
2646 spin_lock_irqsave(&send_mcq->lock, flags_cq);
2647 if (send_mcq->mcq.comp &&
2648 mqp->ibqp.send_cq->comp_handler) {
2649 if (!send_mcq->mcq.reset_notify_added) {
2650 send_mcq->mcq.reset_notify_added = 1;
2651 list_add_tail(&send_mcq->mcq.reset_notify,
2652 &cq_notify_list);
2653 }
2654 }
2655 spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
2656 }
2657 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
2658 /* Now, handle the QP's receive queue */
2659 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
2660 /* no handling is needed for SRQ */
2661 if (!mqp->ibqp.srq) {
2662 if (mqp->rq.tail != mqp->rq.head) {
2663 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
2664 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
2665 if (recv_mcq->mcq.comp &&
2666 mqp->ibqp.recv_cq->comp_handler) {
2667 if (!recv_mcq->mcq.reset_notify_added) {
2668 recv_mcq->mcq.reset_notify_added = 1;
2669 list_add_tail(&recv_mcq->mcq.reset_notify,
2670 &cq_notify_list);
2671 }
2672 }
2673 spin_unlock_irqrestore(&recv_mcq->lock,
2674 flags_cq);
2675 }
2676 }
2677 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
2678 }
2679
2680 list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
2681 mcq->comp(mcq);
2682 }
2683 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
2684 pr_warn("mlx4_ib_handle_catas_error ended\n");
2685 }
2686
2687 static void handle_bonded_port_state_event(struct work_struct *work)
2688 {
2689 struct ib_event_work *ew =
2690 container_of(work, struct ib_event_work, work);
2691 struct mlx4_ib_dev *ibdev = ew->ib_dev;
2692 enum ib_port_state bonded_port_state = IB_PORT_NOP;
2693 int i;
2694 struct ib_event ibev;
2695
2696 kfree(ew);
2697 spin_lock_bh(&ibdev->iboe.lock);
2698 for (i = 0; i < MLX4_MAX_PORTS; ++i) {
2699 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
2700
2701 enum ib_port_state curr_port_state =
2702 (netif_running(curr_netdev) &&
2703 netif_carrier_ok(curr_netdev)) ?
2704 IB_PORT_ACTIVE : IB_PORT_DOWN;
2705
2706 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
2707 curr_port_state : IB_PORT_ACTIVE;
2708 }
2709 spin_unlock_bh(&ibdev->iboe.lock);
2710
2711 ibev.device = &ibdev->ib_dev;
2712 ibev.element.port_num = 1;
2713 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
2714 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2715
2716 ib_dispatch_event(&ibev);
2717 }
2718
2719 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2720 enum mlx4_dev_event event, unsigned long param)
2721 {
2722 struct ib_event ibev;
2723 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2724 struct mlx4_eqe *eqe = NULL;
2725 struct ib_event_work *ew;
2726 int p = 0;
2727
2728 if (mlx4_is_bonded(dev) &&
2729 ((event == MLX4_DEV_EVENT_PORT_UP) ||
2730 (event == MLX4_DEV_EVENT_PORT_DOWN))) {
2731 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
2732 if (!ew)
2733 return;
2734 INIT_WORK(&ew->work, handle_bonded_port_state_event);
2735 ew->ib_dev = ibdev;
2736 queue_work(wq, &ew->work);
2737 return;
2738 }
2739
2740 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
2741 eqe = (struct mlx4_eqe *)param;
2742 else
2743 p = (int) param;
2744
2745 switch (event) {
2746 case MLX4_DEV_EVENT_PORT_UP:
2747 if (p > ibdev->num_ports)
2748 return;
2749 if (mlx4_is_master(dev) &&
2750 rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
2751 IB_LINK_LAYER_INFINIBAND) {
2752 mlx4_ib_invalidate_all_guid_record(ibdev, p);
2753 }
2754 ibev.event = IB_EVENT_PORT_ACTIVE;
2755 break;
2756
2757 case MLX4_DEV_EVENT_PORT_DOWN:
2758 if (p > ibdev->num_ports)
2759 return;
2760 ibev.event = IB_EVENT_PORT_ERR;
2761 break;
2762
2763 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2764 ibdev->ib_active = false;
2765 ibev.event = IB_EVENT_DEVICE_FATAL;
2766 mlx4_ib_handle_catas_error(ibdev);
2767 break;
2768
2769 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
2770 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
2771 if (!ew) {
2772 pr_err("failed to allocate memory for events work\n");
2773 break;
2774 }
2775
2776 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
2777 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
2778 ew->ib_dev = ibdev;
2779 /* need to queue only for port owner, which uses GEN_EQE */
2780 if (mlx4_is_master(dev))
2781 queue_work(wq, &ew->work);
2782 else
2783 handle_port_mgmt_change_event(&ew->work);
2784 return;
2785
2786 case MLX4_DEV_EVENT_SLAVE_INIT:
2787 /* here, p is the slave id */
2788 do_slave_init(ibdev, p, 1);
2789 return;
2790
2791 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
2792 /* here, p is the slave id */
2793 do_slave_init(ibdev, p, 0);
2794 return;
2795
2796 default:
2797 return;
2798 }
2799
2800 ibev.device = ibdev_ptr;
2801 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
2802
2803 ib_dispatch_event(&ibev);
2804 }
2805
2806 static struct mlx4_interface mlx4_ib_interface = {
2807 .add = mlx4_ib_add,
2808 .remove = mlx4_ib_remove,
2809 .event = mlx4_ib_event,
2810 .protocol = MLX4_PROT_IB_IPV6,
2811 .flags = MLX4_INTFF_BONDING
2812 };
2813
2814 static int __init mlx4_ib_init(void)
2815 {
2816 int err;
2817
2818 wq = create_singlethread_workqueue("mlx4_ib");
2819 if (!wq)
2820 return -ENOMEM;
2821
2822 err = mlx4_ib_mcg_init();
2823 if (err)
2824 goto clean_wq;
2825
2826 err = mlx4_register_interface(&mlx4_ib_interface);
2827 if (err)
2828 goto clean_mcg;
2829
2830 return 0;
2831
2832 clean_mcg:
2833 mlx4_ib_mcg_destroy();
2834
2835 clean_wq:
2836 destroy_workqueue(wq);
2837 return err;
2838 }
2839
2840 static void __exit mlx4_ib_cleanup(void)
2841 {
2842 mlx4_unregister_interface(&mlx4_ib_interface);
2843 mlx4_ib_mcg_destroy();
2844 destroy_workqueue(wq);
2845 }
2846
2847 module_init(mlx4_ib_init);
2848 module_exit(mlx4_ib_cleanup);
Linux with added FPC-III support