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mlx4: In RoCE allow guests to have multiple GIDS
[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / mellanox / mlx4 / port.c
CommitLineData
2a2336f8
YP		 1/*
2 * Copyright (c) 2007 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/errno.h>
34#include <linux/if_ether.h>
c59fec20 35#include <linux/if_vlan.h>
ee40fa06 36#include <linux/export.h>
2a2336f8
YP		 37
38#include <linux/mlx4/cmd.h>
39
40#include "mlx4.h"
41
42#define MLX4_MAC_VALID (1ull << 63)
2a2336f8
YP		 43
44#define MLX4_VLAN_VALID (1u << 31)
45#define MLX4_VLAN_MASK 0xfff
46
93ece0c1
EE		 47#define MLX4_STATS_TRAFFIC_COUNTERS_MASK 0xfULL
48#define MLX4_STATS_TRAFFIC_DROPS_MASK 0xc0ULL
49#define MLX4_STATS_ERROR_COUNTERS_MASK 0x1ffc30ULL
50#define MLX4_STATS_PORT_COUNTERS_MASK 0x1fe00000ULL
51
2a2336f8
YP		 52void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
53{
54 int i;
55
56 mutex_init(&table->mutex);
57 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
58 table->entries[i] = 0;
59 table->refs[i] = 0;
60 }
61 table->max = 1 << dev->caps.log_num_macs;
62 table->total = 0;
63}
64
65void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
66{
67 int i;
68
69 mutex_init(&table->mutex);
70 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
71 table->entries[i] = 0;
72 table->refs[i] = 0;
73 }
e72ebf5a 74 table->max = (1 << dev->caps.log_num_vlans) - MLX4_VLAN_REGULAR;
2a2336f8
YP		 75 table->total = 0;
76}
77
ffe455ad
EE		 78static int validate_index(struct mlx4_dev *dev,
79 struct mlx4_mac_table *table, int index)
80{
81 int err = 0;
82
83 if (index < 0 || index >= table->max || !table->entries[index]) {
84 mlx4_warn(dev, "No valid Mac entry for the given index\n");
85 err = -EINVAL;
86 }
87 return err;
88}
89
90static int find_index(struct mlx4_dev *dev,
91 struct mlx4_mac_table *table, u64 mac)
92{
93 int i;
94
95 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
96 if ((mac & MLX4_MAC_MASK) ==
97 (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
98 return i;
99 }
100 /* Mac not found */
101 return -EINVAL;
1679200f
YP		 102}
103
ffe455ad
EE		 104static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
105 __be64 *entries)
106{
107 struct mlx4_cmd_mailbox *mailbox;
108 u32 in_mod;
109 int err;
110
111 mailbox = mlx4_alloc_cmd_mailbox(dev);
112 if (IS_ERR(mailbox))
113 return PTR_ERR(mailbox);
114
115 memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
116
117 in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
0f6740c7 118
ffe455ad
EE		 119 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
120 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
121
122 mlx4_free_cmd_mailbox(dev, mailbox);
123 return err;
124}
125
297e0dad
MS		 126int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx)
127{
128 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
129 struct mlx4_mac_table *table = &info->mac_table;
130 int i;
131
132 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
133 if (!table->refs[i])
134 continue;
135
136 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
137 *idx = i;
138 return 0;
139 }
140 }
141
142 return -ENOENT;
143}
144EXPORT_SYMBOL_GPL(mlx4_find_cached_mac);
145
ffe455ad
EE		 146int __mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
147{
148 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
149 struct mlx4_mac_table *table = &info->mac_table;
150 int i, err = 0;
151 int free = -1;
152
153 mlx4_dbg(dev, "Registering MAC: 0x%llx for port %d\n",
154 (unsigned long long) mac, port);
0f6740c7 155
2a2336f8 156 mutex_lock(&table->mutex);
ffe455ad
EE		 157 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
158 if (free < 0 && !table->entries[i]) {
2a2336f8
YP		 159 free = i;
160 continue;
161 }
162
163 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
6ce71acd
RE		 164 /* MAC already registered, increment ref count */
165 err = i;
166 ++table->refs[i];
2a2336f8
YP		 167 goto out;
168 }
169 }
0926f910 170
2a2336f8
YP		 171 mlx4_dbg(dev, "Free MAC index is %d\n", free);
172
173 if (table->total == table->max) {
174 /* No free mac entries */
175 err = -ENOSPC;
176 goto out;
177 }
178
179 /* Register new MAC */
2a2336f8
YP		 180 table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
181
182 err = mlx4_set_port_mac_table(dev, port, table->entries);
183 if (unlikely(err)) {
ffe455ad
EE		 184 mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
185 (unsigned long long) mac);
2a2336f8
YP		 186 table->entries[free] = 0;
187 goto out;
188 }
6ce71acd 189 table->refs[free] = 1;
ffe455ad 190 err = free;
2a2336f8
YP		 191 ++table->total;
192out:
193 mutex_unlock(&table->mutex);
194 return err;
195}
ffe455ad 196EXPORT_SYMBOL_GPL(__mlx4_register_mac);
2a2336f8 197
ffe455ad 198int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
2a2336f8 199{
e7dbeba8 200 u64 out_param = 0;
acddd5dd 201 int err = -EINVAL;
2a2336f8 202
ffe455ad 203 if (mlx4_is_mfunc(dev)) {
acddd5dd
JM		 204 if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
205 err = mlx4_cmd_imm(dev, mac, &out_param,
206 ((u32) port) << 8 | (u32) RES_MAC,
207 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
208 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
209 }
210 if (err && err == -EINVAL && mlx4_is_slave(dev)) {
211 /* retry using old REG_MAC format */
212 set_param_l(&out_param, port);
213 err = mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
214 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
215 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
216 if (!err)
217 dev->flags |= MLX4_FLAG_OLD_REG_MAC;
218 }
ffe455ad
EE		 219 if (err)
220 return err;
1679200f 221
ffe455ad 222 return get_param_l(&out_param);
1679200f 223 }
ffe455ad 224 return __mlx4_register_mac(dev, port, mac);
1679200f 225}
ffe455ad
EE		 226EXPORT_SYMBOL_GPL(mlx4_register_mac);
227
16a10ffd
YB		 228int mlx4_get_base_qpn(struct mlx4_dev *dev, u8 port)
229{
230 return dev->caps.reserved_qps_base[MLX4_QP_REGION_ETH_ADDR] +
231 (port - 1) * (1 << dev->caps.log_num_macs);
232}
233EXPORT_SYMBOL_GPL(mlx4_get_base_qpn);
1679200f 234
ffe455ad 235void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
1679200f
YP		 236{
237 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
238 struct mlx4_mac_table *table = &info->mac_table;
ffe455ad 239 int index;
1679200f 240
1679200f 241 mutex_lock(&table->mutex);
6ce71acd 242 index = find_index(dev, table, mac);
1679200f
YP		 243
244 if (validate_index(dev, table, index))
245 goto out;
6ce71acd
RE		 246 if (--table->refs[index]) {
247 mlx4_dbg(dev, "Have more references for index %d,"
248 "no need to modify mac table\n", index);
249 goto out;
250 }
1679200f 251
ffe455ad
EE		 252 table->entries[index] = 0;
253 mlx4_set_port_mac_table(dev, port, table->entries);
254 --table->total;
2a2336f8
YP		 255out:
256 mutex_unlock(&table->mutex);
257}
ffe455ad
EE		 258EXPORT_SYMBOL_GPL(__mlx4_unregister_mac);
259
260void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
261{
e7dbeba8 262 u64 out_param = 0;
ffe455ad
EE		 263
264 if (mlx4_is_mfunc(dev)) {
acddd5dd
JM		 265 if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
266 (void) mlx4_cmd_imm(dev, mac, &out_param,
267 ((u32) port) << 8 | (u32) RES_MAC,
268 RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
269 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
270 } else {
271 /* use old unregister mac format */
272 set_param_l(&out_param, port);
273 (void) mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
274 RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
275 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
276 }
ffe455ad
EE		 277 return;
278 }
279 __mlx4_unregister_mac(dev, port, mac);
280 return;
281}
2a2336f8
YP		 282EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
283
16a10ffd 284int __mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac)
1679200f
YP		 285{
286 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
287 struct mlx4_mac_table *table = &info->mac_table;
ffe455ad
EE		 288 int index = qpn - info->base_qpn;
289 int err = 0;
1679200f 290
ffe455ad 291 /* CX1 doesn't support multi-functions */
1679200f
YP		 292 mutex_lock(&table->mutex);
293
294 err = validate_index(dev, table, index);
295 if (err)
296 goto out;
297
298 table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
299
300 err = mlx4_set_port_mac_table(dev, port, table->entries);
301 if (unlikely(err)) {
ffe455ad
EE		 302 mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
303 (unsigned long long) new_mac);
1679200f
YP		 304 table->entries[index] = 0;
305 }
306out:
307 mutex_unlock(&table->mutex);
308 return err;
309}
16a10ffd 310EXPORT_SYMBOL_GPL(__mlx4_replace_mac);
ffe455ad 311
2a2336f8
YP		 312static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
313 __be32 *entries)
314{
315 struct mlx4_cmd_mailbox *mailbox;
316 u32 in_mod;
317 int err;
318
319 mailbox = mlx4_alloc_cmd_mailbox(dev);
320 if (IS_ERR(mailbox))
321 return PTR_ERR(mailbox);
322
323 memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
324 in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
325 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
162226a1 326 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
2a2336f8
YP		 327
328 mlx4_free_cmd_mailbox(dev, mailbox);
329
330 return err;
331}
332
4c3eb3ca
EC		 333int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
334{
335 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
336 int i;
337
338 for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
339 if (table->refs[i] &&
340 (vid == (MLX4_VLAN_MASK &
341 be32_to_cpu(table->entries[i])))) {
342 /* VLAN already registered, increase reference count */
343 *idx = i;
344 return 0;
345 }
346 }
347
348 return -ENOENT;
349}
350EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
351
3f7fb021 352int __mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan,
ffe455ad 353 int *index)
2a2336f8
YP		 354{
355 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
356 int i, err = 0;
357 int free = -1;
358
359 mutex_lock(&table->mutex);
e72ebf5a
YP		 360
361 if (table->total == table->max) {
362 /* No free vlan entries */
363 err = -ENOSPC;
364 goto out;
365 }
366
2a2336f8
YP		 367 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
368 if (free < 0 && (table->refs[i] == 0)) {
369 free = i;
370 continue;
371 }
372
373 if (table->refs[i] &&
374 (vlan == (MLX4_VLAN_MASK &
375 be32_to_cpu(table->entries[i])))) {
25985edc 376 /* Vlan already registered, increase references count */
2a2336f8
YP		 377 *index = i;
378 ++table->refs[i];
379 goto out;
380 }
381 }
382
0926f910
EC		 383 if (free < 0) {
384 err = -ENOMEM;
385 goto out;
386 }
387
ffe455ad 388 /* Register new VLAN */
2a2336f8
YP		 389 table->refs[free] = 1;
390 table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
391
392 err = mlx4_set_port_vlan_table(dev, port, table->entries);
393 if (unlikely(err)) {
394 mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
395 table->refs[free] = 0;
396 table->entries[free] = 0;
397 goto out;
398 }
399
400 *index = free;
401 ++table->total;
402out:
403 mutex_unlock(&table->mutex);
404 return err;
405}
ffe455ad
EE		 406
407int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
408{
e7dbeba8 409 u64 out_param = 0;
ffe455ad
EE		 410 int err;
411
162226a1
JM		 412 if (vlan > 4095)
413 return -EINVAL;
414
ffe455ad 415 if (mlx4_is_mfunc(dev)) {
acddd5dd
JM		 416 err = mlx4_cmd_imm(dev, vlan, &out_param,
417 ((u32) port) << 8 | (u32) RES_VLAN,
ffe455ad
EE		 418 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
419 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
420 if (!err)
421 *index = get_param_l(&out_param);
422
423 return err;
424 }
425 return __mlx4_register_vlan(dev, port, vlan, index);
426}
2a2336f8
YP		 427EXPORT_SYMBOL_GPL(mlx4_register_vlan);
428
2009d005 429void __mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
2a2336f8
YP		 430{
431 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
2009d005 432 int index;
2a2336f8 433
2009d005
JM		 434 mutex_lock(&table->mutex);
435 if (mlx4_find_cached_vlan(dev, port, vlan, &index)) {
436 mlx4_warn(dev, "vlan 0x%x is not in the vlan table\n", vlan);
437 goto out;
2a2336f8
YP		 438 }
439
2009d005
JM		 440 if (index < MLX4_VLAN_REGULAR) {
441 mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
2a2336f8
YP		 442 goto out;
443 }
2009d005 444
2a2336f8 445 if (--table->refs[index]) {
2009d005
JM		 446 mlx4_dbg(dev, "Have %d more references for index %d,"
447 "no need to modify vlan table\n", table->refs[index],
448 index);
2a2336f8
YP		 449 goto out;
450 }
451 table->entries[index] = 0;
452 mlx4_set_port_vlan_table(dev, port, table->entries);
453 --table->total;
454out:
455 mutex_unlock(&table->mutex);
456}
ffe455ad 457
2009d005 458void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
ffe455ad 459{
162226a1 460 u64 out_param = 0;
ffe455ad
EE		 461
462 if (mlx4_is_mfunc(dev)) {
2009d005 463 (void) mlx4_cmd_imm(dev, vlan, &out_param,
acddd5dd 464 ((u32) port) << 8 | (u32) RES_VLAN,
162226a1
JM		 465 RES_OP_RESERVE_AND_MAP,
466 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
467 MLX4_CMD_WRAPPED);
ffe455ad
EE		 468 return;
469 }
2009d005 470 __mlx4_unregister_vlan(dev, port, vlan);
ffe455ad 471}
2a2336f8 472EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
7ff93f8b 473
9a5aa622
JM		 474int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps)
475{
476 struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
477 u8 *inbuf, *outbuf;
478 int err;
479
480 inmailbox = mlx4_alloc_cmd_mailbox(dev);
481 if (IS_ERR(inmailbox))
482 return PTR_ERR(inmailbox);
483
484 outmailbox = mlx4_alloc_cmd_mailbox(dev);
485 if (IS_ERR(outmailbox)) {
486 mlx4_free_cmd_mailbox(dev, inmailbox);
487 return PTR_ERR(outmailbox);
488 }
489
490 inbuf = inmailbox->buf;
491 outbuf = outmailbox->buf;
9a5aa622
JM		 492 inbuf[0] = 1;
493 inbuf[1] = 1;
494 inbuf[2] = 1;
495 inbuf[3] = 1;
496 *(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015);
497 *(__be32 *) (&inbuf[20]) = cpu_to_be32(port);
498
499 err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
f9baff50
JM		 500 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
501 MLX4_CMD_NATIVE);
9a5aa622
JM		 502 if (!err)
503 *caps = *(__be32 *) (outbuf + 84);
504 mlx4_free_cmd_mailbox(dev, inmailbox);
505 mlx4_free_cmd_mailbox(dev, outmailbox);
506 return err;
507}
9cd59352 508static struct mlx4_roce_gid_entry zgid_entry;
9a5aa622 509
b6ffaeff
JM		 510int mlx4_get_slave_num_gids(struct mlx4_dev *dev, int slave)
511{
512 if (slave == 0)
513 return MLX4_ROCE_PF_GIDS;
514 if (slave <= ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) % dev->num_vfs))
515 return ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / dev->num_vfs) + 1;
516 return (MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / dev->num_vfs;
517}
518
519int mlx4_get_base_gid_ix(struct mlx4_dev *dev, int slave)
520{
521 int gids;
522 int vfs;
523
524 gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
525 vfs = dev->num_vfs;
526
527 if (slave == 0)
528 return 0;
529 if (slave <= gids % vfs)
530 return MLX4_ROCE_PF_GIDS + ((gids / vfs) + 1) * (slave - 1);
531
532 return MLX4_ROCE_PF_GIDS + (gids % vfs) + ((gids / vfs) * (slave - 1));
533}
534
ffe455ad
EE		 535static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod,
536 u8 op_mod, struct mlx4_cmd_mailbox *inbox)
537{
538 struct mlx4_priv *priv = mlx4_priv(dev);
539 struct mlx4_port_info *port_info;
540 struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master;
541 struct mlx4_slave_state *slave_st = &master->slave_state[slave];
542 struct mlx4_set_port_rqp_calc_context *qpn_context;
543 struct mlx4_set_port_general_context *gen_context;
b6ffaeff 544 struct mlx4_roce_gid_entry *gid_entry_tbl, *gid_entry_mbox, *gid_entry_mb1;
ffe455ad
EE		 545 int reset_qkey_viols;
546 int port;
547 int is_eth;
b6ffaeff
JM		 548 int num_gids;
549 int base;
ffe455ad
EE		 550 u32 in_modifier;
551 u32 promisc;
552 u16 mtu, prev_mtu;
553 int err;
b6ffaeff
JM		 554 int i, j;
555 int offset;
ffe455ad
EE		 556 __be32 agg_cap_mask;
557 __be32 slave_cap_mask;
558 __be32 new_cap_mask;
559
560 port = in_mod & 0xff;
561 in_modifier = in_mod >> 8;
562 is_eth = op_mod;
563 port_info = &priv->port[port];
564
565 /* Slaves cannot perform SET_PORT operations except changing MTU */
566 if (is_eth) {
567 if (slave != dev->caps.function &&
9cd59352
JM		 568 in_modifier != MLX4_SET_PORT_GENERAL &&
569 in_modifier != MLX4_SET_PORT_GID_TABLE) {
ffe455ad
EE		 570 mlx4_warn(dev, "denying SET_PORT for slave:%d\n",
571 slave);
572 return -EINVAL;
573 }
574 switch (in_modifier) {
575 case MLX4_SET_PORT_RQP_CALC:
576 qpn_context = inbox->buf;
577 qpn_context->base_qpn =
578 cpu_to_be32(port_info->base_qpn);
579 qpn_context->n_mac = 0x7;
580 promisc = be32_to_cpu(qpn_context->promisc) >>
581 SET_PORT_PROMISC_SHIFT;
582 qpn_context->promisc = cpu_to_be32(
583 promisc << SET_PORT_PROMISC_SHIFT |
584 port_info->base_qpn);
585 promisc = be32_to_cpu(qpn_context->mcast) >>
586 SET_PORT_MC_PROMISC_SHIFT;
587 qpn_context->mcast = cpu_to_be32(
588 promisc << SET_PORT_MC_PROMISC_SHIFT |
589 port_info->base_qpn);
590 break;
591 case MLX4_SET_PORT_GENERAL:
592 gen_context = inbox->buf;
593 /* Mtu is configured as the max MTU among all the
594 * the functions on the port. */
595 mtu = be16_to_cpu(gen_context->mtu);
c59fec20
EE		 596 mtu = min_t(int, mtu, dev->caps.eth_mtu_cap[port] +
597 ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
ffe455ad
EE		 598 prev_mtu = slave_st->mtu[port];
599 slave_st->mtu[port] = mtu;
600 if (mtu > master->max_mtu[port])
601 master->max_mtu[port] = mtu;
602 if (mtu < prev_mtu && prev_mtu ==
603 master->max_mtu[port]) {
604 slave_st->mtu[port] = mtu;
605 master->max_mtu[port] = mtu;
606 for (i = 0; i < dev->num_slaves; i++) {
607 master->max_mtu[port] =
608 max(master->max_mtu[port],
609 master->slave_state[i].mtu[port]);
610 }
611 }
612
613 gen_context->mtu = cpu_to_be16(master->max_mtu[port]);
614 break;
9cd59352 615 case MLX4_SET_PORT_GID_TABLE:
b6ffaeff
JM		 616 /* change to MULTIPLE entries: number of guest's gids
617 * need a FOR-loop here over number of gids the guest has.
618 * 1. Check no duplicates in gids passed by slave
619 */
620 num_gids = mlx4_get_slave_num_gids(dev, slave);
621 base = mlx4_get_base_gid_ix(dev, slave);
622 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
623 for (i = 0; i < num_gids; gid_entry_mbox++, i++) {
624 if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
625 sizeof(zgid_entry)))
626 continue;
627 gid_entry_mb1 = gid_entry_mbox + 1;
628 for (j = i + 1; j < num_gids; gid_entry_mb1++, j++) {
629 if (!memcmp(gid_entry_mb1->raw,
630 zgid_entry.raw, sizeof(zgid_entry)))
631 continue;
632 if (!memcmp(gid_entry_mb1->raw, gid_entry_mbox->raw,
633 sizeof(gid_entry_mbox->raw))) {
634 /* found duplicate */
635 return -EINVAL;
9cd59352
JM		 636 }
637 }
638 }
b6ffaeff
JM		 639
640 /* 2. Check that do not have duplicates in OTHER
641 * entries in the port GID table
642 */
9cd59352 643 for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
b6ffaeff
JM		 644 if (i >= base && i < base + num_gids)
645 continue; /* don't compare to slave's current gids */
646 gid_entry_tbl = &priv->roce_gids[port - 1][i];
647 if (!memcmp(gid_entry_tbl->raw, zgid_entry.raw, sizeof(zgid_entry)))
648 continue;
649 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
650 for (j = 0; j < num_gids; gid_entry_mbox++, j++) {
651 if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
652 sizeof(zgid_entry)))
653 continue;
654 if (!memcmp(gid_entry_mbox->raw, gid_entry_tbl->raw,
655 sizeof(gid_entry_tbl->raw))) {
656 /* found duplicate */
657 mlx4_warn(dev, "requested gid entry for slave:%d "
658 "is a duplicate of gid at index %d\n",
659 slave, i);
660 return -EINVAL;
661 }
662 }
9cd59352 663 }
b6ffaeff
JM		 664
665 /* insert slave GIDs with memcpy, starting at slave's base index */
666 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
667 for (i = 0, offset = base; i < num_gids; gid_entry_mbox++, offset++, i++)
668 memcpy(priv->roce_gids[port - 1][offset].raw, gid_entry_mbox->raw, 16);
669
670 /* Now, copy roce port gids table to current mailbox for passing to FW */
671 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
672 for (i = 0; i < MLX4_ROCE_MAX_GIDS; gid_entry_mbox++, i++)
673 memcpy(gid_entry_mbox->raw, priv->roce_gids[port - 1][i].raw, 16);
674
9cd59352 675 break;
ffe455ad
EE		 676 }
677 return mlx4_cmd(dev, inbox->dma, in_mod, op_mod,
678 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
679 MLX4_CMD_NATIVE);
680 }
681
682 /* For IB, we only consider:
683 * - The capability mask, which is set to the aggregate of all
684 * slave function capabilities
685 * - The QKey violatin counter - reset according to each request.
686 */
687
688 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
689 reset_qkey_viols = (*(u8 *) inbox->buf) & 0x40;
690 new_cap_mask = ((__be32 *) inbox->buf)[2];
691 } else {
692 reset_qkey_viols = ((u8 *) inbox->buf)[3] & 0x1;
693 new_cap_mask = ((__be32 *) inbox->buf)[1];
694 }
695
efcd235d
JM		 696 /* slave may not set the IS_SM capability for the port */
697 if (slave != mlx4_master_func_num(dev) &&
698 (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_IS_SM))
699 return -EINVAL;
700
701 /* No DEV_MGMT in multifunc mode */
702 if (mlx4_is_mfunc(dev) &&
703 (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_DEV_MGMT_SUP))
704 return -EINVAL;
705
ffe455ad
EE		 706 agg_cap_mask = 0;
707 slave_cap_mask =
708 priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
709 priv->mfunc.master.slave_state[slave].ib_cap_mask[port] = new_cap_mask;
710 for (i = 0; i < dev->num_slaves; i++)
711 agg_cap_mask |=
712 priv->mfunc.master.slave_state[i].ib_cap_mask[port];
713
714 /* only clear mailbox for guests. Master may be setting
715 * MTU or PKEY table size
716 */
717 if (slave != dev->caps.function)
718 memset(inbox->buf, 0, 256);
719 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
edc4a67e 720 *(u8 *) inbox->buf |= !!reset_qkey_viols << 6;
ffe455ad
EE		 721 ((__be32 *) inbox->buf)[2] = agg_cap_mask;
722 } else {
edc4a67e 723 ((u8 *) inbox->buf)[3] |= !!reset_qkey_viols;
ffe455ad
EE		 724 ((__be32 *) inbox->buf)[1] = agg_cap_mask;
725 }
726
727 err = mlx4_cmd(dev, inbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
728 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
729 if (err)
730 priv->mfunc.master.slave_state[slave].ib_cap_mask[port] =
731 slave_cap_mask;
732 return err;
733}
734
735int mlx4_SET_PORT_wrapper(struct mlx4_dev *dev, int slave,
736 struct mlx4_vhcr *vhcr,
737 struct mlx4_cmd_mailbox *inbox,
738 struct mlx4_cmd_mailbox *outbox,
739 struct mlx4_cmd_info *cmd)
740{
741 return mlx4_common_set_port(dev, slave, vhcr->in_modifier,
742 vhcr->op_modifier, inbox);
743}
744
096335b3
OG		 745/* bit locations for set port command with zero op modifier */
746enum {
747 MLX4_SET_PORT_VL_CAP = 4, /* bits 7:4 */
748 MLX4_SET_PORT_MTU_CAP = 12, /* bits 15:12 */
6634961c 749 MLX4_CHANGE_PORT_PKEY_TBL_SZ = 20,
096335b3
OG		 750 MLX4_CHANGE_PORT_VL_CAP = 21,
751 MLX4_CHANGE_PORT_MTU_CAP = 22,
752};
753
6634961c 754int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port, int pkey_tbl_sz)
7ff93f8b
YP		 755{
756 struct mlx4_cmd_mailbox *mailbox;
6634961c 757 int err, vl_cap, pkey_tbl_flag = 0;
7ff93f8b 758
352b09ed
RD		 759 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
760 return 0;
761
7ff93f8b
YP		 762 mailbox = mlx4_alloc_cmd_mailbox(dev);
763 if (IS_ERR(mailbox))
764 return PTR_ERR(mailbox);
765
793730bf 766 ((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
096335b3 767
6634961c
JM		 768 if (pkey_tbl_sz >= 0 && mlx4_is_master(dev)) {
769 pkey_tbl_flag = 1;
770 ((__be16 *) mailbox->buf)[20] = cpu_to_be16(pkey_tbl_sz);
771 }
772
096335b3
OG		 773 /* IB VL CAP enum isn't used by the firmware, just numerical values */
774 for (vl_cap = 8; vl_cap >= 1; vl_cap >>= 1) {
775 ((__be32 *) mailbox->buf)[0] = cpu_to_be32(
776 (1 << MLX4_CHANGE_PORT_MTU_CAP) |
777 (1 << MLX4_CHANGE_PORT_VL_CAP) |
6634961c 778 (pkey_tbl_flag << MLX4_CHANGE_PORT_PKEY_TBL_SZ) |
096335b3
OG		 779 (dev->caps.port_ib_mtu[port] << MLX4_SET_PORT_MTU_CAP) |
780 (vl_cap << MLX4_SET_PORT_VL_CAP));
781 err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
782 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
783 if (err != -ENOMEM)
784 break;
785 }
7ff93f8b
YP		 786
787 mlx4_free_cmd_mailbox(dev, mailbox);
788 return err;
789}
ffe455ad 790
cb9ffb76 791int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
ffe455ad
EE		 792 u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx)
793{
794 struct mlx4_cmd_mailbox *mailbox;
795 struct mlx4_set_port_general_context *context;
796 int err;
797 u32 in_mod;
798
799 mailbox = mlx4_alloc_cmd_mailbox(dev);
800 if (IS_ERR(mailbox))
801 return PTR_ERR(mailbox);
802 context = mailbox->buf;
ffe455ad
EE		 803 context->flags = SET_PORT_GEN_ALL_VALID;
804 context->mtu = cpu_to_be16(mtu);
805 context->pptx = (pptx * (!pfctx)) << 7;
806 context->pfctx = pfctx;
807 context->pprx = (pprx * (!pfcrx)) << 7;
808 context->pfcrx = pfcrx;
809
810 in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
811 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
812 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
813
814 mlx4_free_cmd_mailbox(dev, mailbox);
815 return err;
816}
817EXPORT_SYMBOL(mlx4_SET_PORT_general);
818
cb9ffb76 819int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
ffe455ad
EE		 820 u8 promisc)
821{
822 struct mlx4_cmd_mailbox *mailbox;
823 struct mlx4_set_port_rqp_calc_context *context;
824 int err;
825 u32 in_mod;
826 u32 m_promisc = (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) ?
827 MCAST_DIRECT : MCAST_DEFAULT;
828
c96d97f4 829 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
ffe455ad
EE		 830 return 0;
831
832 mailbox = mlx4_alloc_cmd_mailbox(dev);
833 if (IS_ERR(mailbox))
834 return PTR_ERR(mailbox);
835 context = mailbox->buf;
ffe455ad
EE		 836 context->base_qpn = cpu_to_be32(base_qpn);
837 context->n_mac = dev->caps.log_num_macs;
838 context->promisc = cpu_to_be32(promisc << SET_PORT_PROMISC_SHIFT |
839 base_qpn);
840 context->mcast = cpu_to_be32(m_promisc << SET_PORT_MC_PROMISC_SHIFT |
841 base_qpn);
842 context->intra_no_vlan = 0;
843 context->no_vlan = MLX4_NO_VLAN_IDX;
844 context->intra_vlan_miss = 0;
845 context->vlan_miss = MLX4_VLAN_MISS_IDX;
846
847 in_mod = MLX4_SET_PORT_RQP_CALC << 8 | port;
848 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
849 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
850
851 mlx4_free_cmd_mailbox(dev, mailbox);
852 return err;
853}
854EXPORT_SYMBOL(mlx4_SET_PORT_qpn_calc);
855
e5395e92
AV		 856int mlx4_SET_PORT_PRIO2TC(struct mlx4_dev *dev, u8 port, u8 *prio2tc)
857{
858 struct mlx4_cmd_mailbox *mailbox;
859 struct mlx4_set_port_prio2tc_context *context;
860 int err;
861 u32 in_mod;
862 int i;
863
864 mailbox = mlx4_alloc_cmd_mailbox(dev);
865 if (IS_ERR(mailbox))
866 return PTR_ERR(mailbox);
867 context = mailbox->buf;
e5395e92
AV		 868 for (i = 0; i < MLX4_NUM_UP; i += 2)
869 context->prio2tc[i >> 1] = prio2tc[i] << 4 | prio2tc[i + 1];
870
871 in_mod = MLX4_SET_PORT_PRIO2TC << 8 | port;
872 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
873 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
874
875 mlx4_free_cmd_mailbox(dev, mailbox);
876 return err;
877}
878EXPORT_SYMBOL(mlx4_SET_PORT_PRIO2TC);
879
880int mlx4_SET_PORT_SCHEDULER(struct mlx4_dev *dev, u8 port, u8 *tc_tx_bw,
881 u8 *pg, u16 *ratelimit)
882{
883 struct mlx4_cmd_mailbox *mailbox;
884 struct mlx4_set_port_scheduler_context *context;
885 int err;
886 u32 in_mod;
887 int i;
888
889 mailbox = mlx4_alloc_cmd_mailbox(dev);
890 if (IS_ERR(mailbox))
891 return PTR_ERR(mailbox);
892 context = mailbox->buf;
e5395e92
AV		 893
894 for (i = 0; i < MLX4_NUM_TC; i++) {
895 struct mlx4_port_scheduler_tc_cfg_be *tc = &context->tc[i];
896 u16 r = ratelimit && ratelimit[i] ? ratelimit[i] :
897 MLX4_RATELIMIT_DEFAULT;
898
899 tc->pg = htons(pg[i]);
900 tc->bw_precentage = htons(tc_tx_bw[i]);
901
902 tc->max_bw_units = htons(MLX4_RATELIMIT_UNITS);
903 tc->max_bw_value = htons(r);
904 }
905
906 in_mod = MLX4_SET_PORT_SCHEDULER << 8 | port;
907 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
908 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
909
910 mlx4_free_cmd_mailbox(dev, mailbox);
911 return err;
912}
913EXPORT_SYMBOL(mlx4_SET_PORT_SCHEDULER);
914
7ffdf726
OG		 915enum {
916 VXLAN_ENABLE_MODIFY = 1 << 7,
917 VXLAN_STEERING_MODIFY = 1 << 6,
918
919 VXLAN_ENABLE = 1 << 7,
920};
921
922struct mlx4_set_port_vxlan_context {
923 u32 reserved1;
924 u8 modify_flags;
925 u8 reserved2;
926 u8 enable_flags;
927 u8 steering;
928};
929
930int mlx4_SET_PORT_VXLAN(struct mlx4_dev *dev, u8 port, u8 steering)
931{
932 int err;
933 u32 in_mod;
934 struct mlx4_cmd_mailbox *mailbox;
935 struct mlx4_set_port_vxlan_context *context;
936
937 mailbox = mlx4_alloc_cmd_mailbox(dev);
938 if (IS_ERR(mailbox))
939 return PTR_ERR(mailbox);
940 context = mailbox->buf;
941 memset(context, 0, sizeof(*context));
942
943 context->modify_flags = VXLAN_ENABLE_MODIFY | VXLAN_STEERING_MODIFY;
944 context->enable_flags = VXLAN_ENABLE;
945 context->steering = steering;
946
947 in_mod = MLX4_SET_PORT_VXLAN << 8 | port;
948 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
949 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
950
951 mlx4_free_cmd_mailbox(dev, mailbox);
952 return err;
953}
954EXPORT_SYMBOL(mlx4_SET_PORT_VXLAN);
955
ffe455ad
EE		 956int mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev *dev, int slave,
957 struct mlx4_vhcr *vhcr,
958 struct mlx4_cmd_mailbox *inbox,
959 struct mlx4_cmd_mailbox *outbox,
960 struct mlx4_cmd_info *cmd)
961{
962 int err = 0;
963
964 return err;
965}
966
967int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port,
968 u64 mac, u64 clear, u8 mode)
969{
970 return mlx4_cmd(dev, (mac | (clear << 63)), port, mode,
971 MLX4_CMD_SET_MCAST_FLTR, MLX4_CMD_TIME_CLASS_B,
972 MLX4_CMD_WRAPPED);
973}
974EXPORT_SYMBOL(mlx4_SET_MCAST_FLTR);
975
976int mlx4_SET_VLAN_FLTR_wrapper(struct mlx4_dev *dev, int slave,
977 struct mlx4_vhcr *vhcr,
978 struct mlx4_cmd_mailbox *inbox,
979 struct mlx4_cmd_mailbox *outbox,
980 struct mlx4_cmd_info *cmd)
981{
982 int err = 0;
983
984 return err;
985}
986
987int mlx4_common_dump_eth_stats(struct mlx4_dev *dev, int slave,
988 u32 in_mod, struct mlx4_cmd_mailbox *outbox)
989{
990 return mlx4_cmd_box(dev, 0, outbox->dma, in_mod, 0,
991 MLX4_CMD_DUMP_ETH_STATS, MLX4_CMD_TIME_CLASS_B,
992 MLX4_CMD_NATIVE);
993}
994
995int mlx4_DUMP_ETH_STATS_wrapper(struct mlx4_dev *dev, int slave,
996 struct mlx4_vhcr *vhcr,
997 struct mlx4_cmd_mailbox *inbox,
998 struct mlx4_cmd_mailbox *outbox,
999 struct mlx4_cmd_info *cmd)
1000{
35fb9afb
EE		 1001 if (slave != dev->caps.function)
1002 return 0;
ffe455ad
EE		 1003 return mlx4_common_dump_eth_stats(dev, slave,
1004 vhcr->in_modifier, outbox);
1005}
93ece0c1
EE		 1006
1007void mlx4_set_stats_bitmap(struct mlx4_dev *dev, u64 *stats_bitmap)
1008{
1009 if (!mlx4_is_mfunc(dev)) {
1010 *stats_bitmap = 0;
1011 return;
1012 }
1013
1014 *stats_bitmap = (MLX4_STATS_TRAFFIC_COUNTERS_MASK |
1015 MLX4_STATS_TRAFFIC_DROPS_MASK |
1016 MLX4_STATS_PORT_COUNTERS_MASK);
1017
1018 if (mlx4_is_master(dev))
1019 *stats_bitmap |= MLX4_STATS_ERROR_COUNTERS_MASK;
1020}
1021EXPORT_SYMBOL(mlx4_set_stats_bitmap);
6ee51a4e 1022
9cd59352
JM		 1023int mlx4_get_slave_from_roce_gid(struct mlx4_dev *dev, int port, u8 *gid,
1024 int *slave_id)
6ee51a4e
JM		 1025{
1026 struct mlx4_priv *priv = mlx4_priv(dev);
1027 int i, found_ix = -1;
b6ffaeff 1028 int vf_gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
6ee51a4e
JM		 1029
1030 if (!mlx4_is_mfunc(dev))
1031 return -EINVAL;
1032
1033 for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1034 if (!memcmp(priv->roce_gids[port - 1][i].raw, gid, 16)) {
1035 found_ix = i;
1036 break;
1037 }
1038 }
1039
b6ffaeff
JM		 1040 if (found_ix >= 0) {
1041 if (found_ix < MLX4_ROCE_PF_GIDS)
1042 *slave_id = 0;
1043 else if (found_ix < MLX4_ROCE_PF_GIDS + (vf_gids % dev->num_vfs) *
1044 (vf_gids / dev->num_vfs + 1))
1045 *slave_id = ((found_ix - MLX4_ROCE_PF_GIDS) /
1046 (vf_gids / dev->num_vfs + 1)) + 1;
1047 else
1048 *slave_id =
1049 ((found_ix - MLX4_ROCE_PF_GIDS -
1050 ((vf_gids % dev->num_vfs) * ((vf_gids / dev->num_vfs + 1)))) /
1051 (vf_gids / dev->num_vfs)) + vf_gids % dev->num_vfs + 1;
1052 }
6ee51a4e
JM		 1053
1054 return (found_ix >= 0) ? 0 : -EINVAL;
1055}
1056EXPORT_SYMBOL(mlx4_get_slave_from_roce_gid);
1057
9cd59352
JM		 1058int mlx4_get_roce_gid_from_slave(struct mlx4_dev *dev, int port, int slave_id,
1059 u8 *gid)
6ee51a4e
JM		 1060{
1061 struct mlx4_priv *priv = mlx4_priv(dev);
1062
1063 if (!mlx4_is_master(dev))
1064 return -EINVAL;
1065
1066 memcpy(gid, priv->roce_gids[port - 1][slave_id].raw, 16);
1067 return 0;
1068}
1069EXPORT_SYMBOL(mlx4_get_roce_gid_from_slave);
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