xref: /trueos/sys/ofed/drivers/net/mlx4/port.c (revision 7a1ab70b9590c4c122be3d913b579be45424f95a)
1 /*
2  * Copyright (c) 2007, 2014 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>
35 #include <linux/module.h>
36 #include <linux/err.h>
37 
38 #include <linux/mlx4/cmd.h>
39 #include <linux/moduleparam.h>
40 #include "mlx4.h"
41 #include "mlx4_stats.h"
42 
43 
44 int mlx4_set_4k_mtu = -1;
45 module_param_named(set_4k_mtu, mlx4_set_4k_mtu, int, 0444);
46 MODULE_PARM_DESC(set_4k_mtu,
47 	"(Obsolete) attempt to set 4K MTU to all ConnectX ports");
48 
49 
50 #define MLX4_MAC_VALID		(1ull << 63)
51 
52 #define MLX4_VLAN_VALID		(1u << 31)
53 #define MLX4_VLAN_MASK		0xfff
54 
mlx4_init_mac_table(struct mlx4_dev * dev,struct mlx4_mac_table * table)55 void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
56 {
57 	int i;
58 
59 	mutex_init(&table->mutex);
60 	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
61 		table->entries[i] = 0;
62 		table->refs[i]	 = 0;
63 	}
64 	table->max   = 1 << dev->caps.log_num_macs;
65 	table->total = 0;
66 }
67 
mlx4_init_vlan_table(struct mlx4_dev * dev,struct mlx4_vlan_table * table)68 void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
69 {
70 	int i;
71 
72 	mutex_init(&table->mutex);
73 	for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
74 		table->entries[i] = 0;
75 		table->refs[i]	 = 0;
76 	}
77 	table->max   = (1 << dev->caps.log_num_vlans) - MLX4_VLAN_REGULAR;
78 	table->total = 0;
79 }
80 
validate_index(struct mlx4_dev * dev,struct mlx4_mac_table * table,int index)81 static int validate_index(struct mlx4_dev *dev,
82 			  struct mlx4_mac_table *table, int index)
83 {
84 	int err = 0;
85 
86 	if (index < 0 || index >= table->max || !table->refs[index]) {
87 		mlx4_warn(dev, "No valid Mac entry for the given index\n");
88 		err = -EINVAL;
89 	}
90 	return err;
91 }
92 
find_index(struct mlx4_dev * dev,struct mlx4_mac_table * table,u64 mac)93 static int find_index(struct mlx4_dev *dev,
94 		      struct mlx4_mac_table *table, u64 mac)
95 {
96 	int i;
97 
98 	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
99 		if ((mac & MLX4_MAC_MASK) ==
100 		    (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
101 			return i;
102 	}
103 	/* Mac not found */
104 	return -EINVAL;
105 }
106 
mlx4_set_port_mac_table(struct mlx4_dev * dev,u8 port,__be64 * entries)107 static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
108 				   __be64 *entries)
109 {
110 	struct mlx4_cmd_mailbox *mailbox;
111 	u32 in_mod;
112 	int err;
113 
114 	mailbox = mlx4_alloc_cmd_mailbox(dev);
115 	if (IS_ERR(mailbox))
116 		return PTR_ERR(mailbox);
117 
118 	memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
119 
120 	in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
121 
122 	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
123 		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
124 
125 	mlx4_free_cmd_mailbox(dev, mailbox);
126 	return err;
127 }
128 
__mlx4_register_mac(struct mlx4_dev * dev,u8 port,u64 mac)129 int __mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
130 {
131 	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
132 	struct mlx4_mac_table *table = &info->mac_table;
133 	int i, err = 0;
134 	int free = -1;
135 
136 	mlx4_dbg(dev, "Registering MAC: 0x%llx for port %d\n",
137 		 (unsigned long long) mac, port);
138 
139 	mutex_lock(&table->mutex);
140 	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
141 		if (free < 0 && !table->refs[i]) {
142 			free = i;
143 			continue;
144 		}
145 
146 		if ((mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) &&
147 		    table->refs[i]) {
148 			/* MAC already registered, Must not have duplicates */
149 			err = i;
150 			++table->refs[i];
151 			goto out;
152 		}
153 	}
154 
155 	mlx4_dbg(dev, "Free MAC index is %d\n", free);
156 
157 	if (table->total == table->max) {
158 		/* No free mac entries */
159 		err = -ENOSPC;
160 		goto out;
161 	}
162 
163 	/* Register new MAC */
164 	table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
165 
166 	err = mlx4_set_port_mac_table(dev, port, table->entries);
167 	if (unlikely(err)) {
168 		mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
169 			 (unsigned long long) mac);
170 		table->entries[free] = 0;
171 		goto out;
172 	}
173 	table->refs[free] = 1;
174 
175 	err = free;
176 	++table->total;
177 out:
178 	mutex_unlock(&table->mutex);
179 	return err;
180 }
181 EXPORT_SYMBOL_GPL(__mlx4_register_mac);
182 
mlx4_register_mac(struct mlx4_dev * dev,u8 port,u64 mac)183 int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
184 {
185 	u64 out_param = 0;
186 	int err = -EINVAL;
187 
188 	if (mlx4_is_mfunc(dev)) {
189 		if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
190 			err = mlx4_cmd_imm(dev, mac, &out_param,
191 					   ((u32) port) << 8 | (u32) RES_MAC,
192 					   RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
193 					   MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
194 		}
195 		if (err && err == -EINVAL && mlx4_is_slave(dev)) {
196 			/* retry using old REG_MAC format */
197 			set_param_l(&out_param, port);
198 			err = mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
199 					   RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
200 					   MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
201 			if (!err)
202 				dev->flags |= MLX4_FLAG_OLD_REG_MAC;
203 		}
204 		if (err)
205 			return err;
206 
207 		return get_param_l(&out_param);
208 	}
209 	return __mlx4_register_mac(dev, port, mac);
210 }
211 EXPORT_SYMBOL_GPL(mlx4_register_mac);
212 
mlx4_get_base_qpn(struct mlx4_dev * dev,u8 port)213 int mlx4_get_base_qpn(struct mlx4_dev *dev, u8 port)
214 {
215 	return dev->caps.reserved_qps_base[MLX4_QP_REGION_ETH_ADDR] +
216 			(port - 1) * (1 << dev->caps.log_num_macs);
217 }
218 EXPORT_SYMBOL_GPL(mlx4_get_base_qpn);
219 
__mlx4_unregister_mac(struct mlx4_dev * dev,u8 port,u64 mac)220 void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
221 {
222 	struct mlx4_port_info *info;
223 	struct mlx4_mac_table *table;
224 	int index;
225 
226 	if (port < 1 || port > dev->caps.num_ports) {
227 		mlx4_warn(dev, "invalid port number (%d), aborting...\n", port);
228 		return;
229 	}
230 	info = &mlx4_priv(dev)->port[port];
231 	table = &info->mac_table;
232 	mutex_lock(&table->mutex);
233 
234 	index = find_index(dev, table, mac);
235 
236 	if (validate_index(dev, table, index))
237 		goto out;
238 
239 	if (--table->refs[index]) {
240 		mlx4_dbg(dev, "Have more references for index %d,"
241 			 "no need to modify mac table\n", index);
242 		goto out;
243 	}
244 
245 	table->entries[index] = 0;
246 	mlx4_set_port_mac_table(dev, port, table->entries);
247 	--table->total;
248 out:
249 	mutex_unlock(&table->mutex);
250 }
251 EXPORT_SYMBOL_GPL(__mlx4_unregister_mac);
252 
mlx4_unregister_mac(struct mlx4_dev * dev,u8 port,u64 mac)253 void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
254 {
255 	u64 out_param = 0;
256 
257 	if (mlx4_is_mfunc(dev)) {
258 		if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
259 			(void) mlx4_cmd_imm(dev, mac, &out_param,
260 					    ((u32) port) << 8 | (u32) RES_MAC,
261 					    RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
262 					    MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
263 		} else {
264 			/* use old unregister mac format */
265 			set_param_l(&out_param, port);
266 			(void) mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
267 					    RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
268 					    MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
269 		}
270 		return;
271 	}
272 	__mlx4_unregister_mac(dev, port, mac);
273 	return;
274 }
275 EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
276 
__mlx4_replace_mac(struct mlx4_dev * dev,u8 port,int qpn,u64 new_mac)277 int __mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac)
278 {
279 	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
280 	struct mlx4_mac_table *table = &info->mac_table;
281 	int index = qpn - info->base_qpn;
282 	int err = 0;
283 
284 	/* CX1 doesn't support multi-functions */
285 	mutex_lock(&table->mutex);
286 
287 	err = validate_index(dev, table, index);
288 	if (err)
289 		goto out;
290 
291 	table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
292 
293 	err = mlx4_set_port_mac_table(dev, port, table->entries);
294 	if (unlikely(err)) {
295 		mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
296 			 (unsigned long long) new_mac);
297 		table->entries[index] = 0;
298 	}
299 out:
300 	mutex_unlock(&table->mutex);
301 	return err;
302 }
303 EXPORT_SYMBOL_GPL(__mlx4_replace_mac);
304 
mlx4_set_port_vlan_table(struct mlx4_dev * dev,u8 port,__be32 * entries)305 static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
306 				    __be32 *entries)
307 {
308 	struct mlx4_cmd_mailbox *mailbox;
309 	u32 in_mod;
310 	int err;
311 
312 	mailbox = mlx4_alloc_cmd_mailbox(dev);
313 	if (IS_ERR(mailbox))
314 		return PTR_ERR(mailbox);
315 
316 	memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
317 	in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
318 	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
319 		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
320 
321 	mlx4_free_cmd_mailbox(dev, mailbox);
322 
323 	return err;
324 }
325 
mlx4_find_cached_vlan(struct mlx4_dev * dev,u8 port,u16 vid,int * idx)326 int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
327 {
328 	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
329 	int i;
330 
331 	for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
332 		if (table->refs[i] &&
333 		    (vid == (MLX4_VLAN_MASK &
334 			      be32_to_cpu(table->entries[i])))) {
335 			/* VLAN already registered, increase reference count */
336 			*idx = i;
337 			return 0;
338 		}
339 	}
340 
341 	return -ENOENT;
342 }
343 EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
344 
__mlx4_register_vlan(struct mlx4_dev * dev,u8 port,u16 vlan,int * index)345 int __mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan,
346 				int *index)
347 {
348 	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
349 	int i, err = 0;
350 	int free = -1;
351 
352 	mutex_lock(&table->mutex);
353 
354 	if (table->total == table->max) {
355 		/* No free vlan entries */
356 		err = -ENOSPC;
357 		goto out;
358 	}
359 
360 	for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
361 		if (free < 0 && (table->refs[i] == 0)) {
362 			free = i;
363 			continue;
364 		}
365 
366 		if (table->refs[i] &&
367 		    (vlan == (MLX4_VLAN_MASK &
368 			      be32_to_cpu(table->entries[i])))) {
369 			/* Vlan already registered, increase references count */
370 			*index = i;
371 			++table->refs[i];
372 			goto out;
373 		}
374 	}
375 
376 	if (free < 0) {
377 		err = -ENOMEM;
378 		goto out;
379 	}
380 
381 	/* Register new VLAN */
382 	table->refs[free] = 1;
383 	table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
384 
385 	err = mlx4_set_port_vlan_table(dev, port, table->entries);
386 	if (unlikely(err)) {
387 		mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
388 		table->refs[free] = 0;
389 		table->entries[free] = 0;
390 		goto out;
391 	}
392 
393 	*index = free;
394 	++table->total;
395 out:
396 	mutex_unlock(&table->mutex);
397 	return err;
398 }
399 
mlx4_register_vlan(struct mlx4_dev * dev,u8 port,u16 vlan,int * index)400 int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
401 {
402 	u64 out_param = 0;
403 	int err;
404 
405 	if (vlan > 4095)
406 		return -EINVAL;
407 
408 	if (mlx4_is_mfunc(dev)) {
409 		err = mlx4_cmd_imm(dev, vlan, &out_param,
410 				   ((u32) port) << 8 | (u32) RES_VLAN,
411 				   RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
412 				   MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
413 		if (!err)
414 			*index = get_param_l(&out_param);
415 
416 		return err;
417 	}
418 	return __mlx4_register_vlan(dev, port, vlan, index);
419 }
420 EXPORT_SYMBOL_GPL(mlx4_register_vlan);
421 
__mlx4_unregister_vlan(struct mlx4_dev * dev,u8 port,u16 vlan)422 void __mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
423 {
424 	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
425 	int index;
426 
427 	mutex_lock(&table->mutex);
428 	if (mlx4_find_cached_vlan(dev, port, vlan, &index)) {
429 		mlx4_warn(dev, "vlan 0x%x is not in the vlan table\n", vlan);
430 		goto out;
431 	}
432 
433 	if (index < MLX4_VLAN_REGULAR) {
434 		mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
435 		goto out;
436 	}
437 
438 	if (--table->refs[index]) {
439 		mlx4_dbg(dev, "Have %d more references for index %d, "
440 			 "no need to modify vlan table\n", table->refs[index],
441 			 index);
442 		goto out;
443 	}
444 	table->entries[index] = 0;
445 	mlx4_set_port_vlan_table(dev, port, table->entries);
446 	--table->total;
447 out:
448 	mutex_unlock(&table->mutex);
449 }
450 
mlx4_unregister_vlan(struct mlx4_dev * dev,u8 port,u16 vlan)451 void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
452 {
453 	u64 out_param = 0;
454 
455 	if (mlx4_is_mfunc(dev)) {
456 		(void) mlx4_cmd_imm(dev, vlan, &out_param,
457 				    ((u32) port) << 8 | (u32) RES_VLAN,
458 				    RES_OP_RESERVE_AND_MAP,
459 				    MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
460 				    MLX4_CMD_WRAPPED);
461 		return;
462 	}
463 	__mlx4_unregister_vlan(dev, port, vlan);
464 }
465 EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
466 
mlx4_get_port_ib_caps(struct mlx4_dev * dev,u8 port,__be32 * caps)467 int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps)
468 {
469 	struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
470 	u8 *inbuf, *outbuf;
471 	int err;
472 
473 	inmailbox = mlx4_alloc_cmd_mailbox(dev);
474 	if (IS_ERR(inmailbox))
475 		return PTR_ERR(inmailbox);
476 
477 	outmailbox = mlx4_alloc_cmd_mailbox(dev);
478 	if (IS_ERR(outmailbox)) {
479 		mlx4_free_cmd_mailbox(dev, inmailbox);
480 		return PTR_ERR(outmailbox);
481 	}
482 
483 	inbuf = inmailbox->buf;
484 	outbuf = outmailbox->buf;
485 	memset(inbuf, 0, 256);
486 	memset(outbuf, 0, 256);
487 	inbuf[0] = 1;
488 	inbuf[1] = 1;
489 	inbuf[2] = 1;
490 	inbuf[3] = 1;
491 	*(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015);
492 	*(__be32 *) (&inbuf[20]) = cpu_to_be32(port);
493 
494 	err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
495 			   MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
496 			   MLX4_CMD_NATIVE);
497 	if (!err)
498 		*caps = *(__be32 *) (outbuf + 84);
499 	mlx4_free_cmd_mailbox(dev, inmailbox);
500 	mlx4_free_cmd_mailbox(dev, outmailbox);
501 	return err;
502 }
503 static struct mlx4_roce_gid_entry zgid_entry;
504 
mlx4_get_slave_num_gids(struct mlx4_dev * dev,int slave)505 int mlx4_get_slave_num_gids(struct mlx4_dev *dev, int slave)
506 {
507 	if (slave == 0)
508 		return MLX4_ROCE_PF_GIDS;
509 	if (slave <= ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) % dev->num_vfs))
510 		return ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / dev->num_vfs) + 1;
511 	return (MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / dev->num_vfs;
512 }
513 
mlx4_get_base_gid_ix(struct mlx4_dev * dev,int slave)514 int mlx4_get_base_gid_ix(struct mlx4_dev *dev, int slave)
515 {
516 	int gids;
517 	int vfs;
518 
519 	gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
520 	vfs = dev->num_vfs;
521 
522 	if (slave == 0)
523 		return 0;
524 	if (slave <= gids % vfs)
525 		return MLX4_ROCE_PF_GIDS + ((gids / vfs) + 1) * (slave - 1);
526 
527 	return MLX4_ROCE_PF_GIDS + (gids % vfs) + ((gids / vfs) * (slave - 1));
528 }
529 
mlx4_common_set_port(struct mlx4_dev * dev,int slave,u32 in_mod,u8 op_mod,struct mlx4_cmd_mailbox * inbox)530 static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod,
531 				u8 op_mod, struct mlx4_cmd_mailbox *inbox)
532 {
533 	struct mlx4_priv *priv = mlx4_priv(dev);
534 	struct mlx4_port_info *port_info;
535 	struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master;
536 	struct mlx4_slave_state *slave_st = &master->slave_state[slave];
537 	struct mlx4_set_port_rqp_calc_context *qpn_context;
538 	struct mlx4_set_port_general_context *gen_context;
539 	struct mlx4_roce_gid_entry *gid_entry_tbl, *gid_entry_mbox, *gid_entry_mb1;
540 	int reset_qkey_viols;
541 	int port;
542 	int is_eth;
543 	int num_gids;
544 	int base;
545 	u32 in_modifier;
546 	u32 promisc;
547 	u16 mtu, prev_mtu;
548 	int err;
549 	int i, j;
550 	int offset;
551 	__be32 agg_cap_mask;
552 	__be32 slave_cap_mask;
553 	__be32 new_cap_mask;
554 
555 	port = in_mod & 0xff;
556 	in_modifier = (in_mod >> 8) & 0xff;
557 	is_eth = op_mod;
558 	port_info = &priv->port[port];
559 
560 	if (op_mod > 1)
561 		return -EINVAL;
562 
563 	/* Slaves cannot perform SET_PORT operations except changing MTU */
564 	if (is_eth) {
565 		if (slave != dev->caps.function &&
566 		    in_modifier != MLX4_SET_PORT_GENERAL &&
567 		    in_modifier != MLX4_SET_PORT_GID_TABLE) {
568 			mlx4_warn(dev, "denying SET_PORT for slave:%d,"
569 				  "port %d, config_select 0x%x\n",
570 				  slave, port, in_modifier);
571 			return -EINVAL;
572 		}
573 		switch (in_modifier) {
574 		case MLX4_SET_PORT_RQP_CALC:
575 			qpn_context = inbox->buf;
576 			qpn_context->base_qpn =
577 				cpu_to_be32(port_info->base_qpn);
578 			qpn_context->n_mac = 0x7;
579 			promisc = be32_to_cpu(qpn_context->promisc) >>
580 				SET_PORT_PROMISC_SHIFT;
581 			qpn_context->promisc = cpu_to_be32(
582 				promisc << SET_PORT_PROMISC_SHIFT |
583 				port_info->base_qpn);
584 			promisc = be32_to_cpu(qpn_context->mcast) >>
585 				SET_PORT_MC_PROMISC_SHIFT;
586 			qpn_context->mcast = cpu_to_be32(
587 				promisc << SET_PORT_MC_PROMISC_SHIFT |
588 				port_info->base_qpn);
589 			break;
590 		case MLX4_SET_PORT_GENERAL:
591 			gen_context = inbox->buf;
592 			/* Mtu is configured as the max MTU among all the
593 			 * the functions on the port. */
594 			mtu = be16_to_cpu(gen_context->mtu);
595 			mtu = min_t(int, mtu, dev->caps.eth_mtu_cap[port] +
596 				    ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
597 			prev_mtu = slave_st->mtu[port];
598 			slave_st->mtu[port] = mtu;
599 			if (mtu > master->max_mtu[port])
600 				master->max_mtu[port] = mtu;
601 			if (mtu < prev_mtu && prev_mtu ==
602 						master->max_mtu[port]) {
603 				slave_st->mtu[port] = mtu;
604 				master->max_mtu[port] = mtu;
605 				for (i = 0; i < dev->num_slaves; i++) {
606 					master->max_mtu[port] =
607 					max(master->max_mtu[port],
608 					    master->slave_state[i].mtu[port]);
609 				}
610 			}
611 
612 			gen_context->mtu = cpu_to_be16(master->max_mtu[port]);
613 			break;
614 		case MLX4_SET_PORT_GID_TABLE:
615 			/* change to MULTIPLE entries: number of guest's gids
616 			 * need a FOR-loop here over number of gids the guest has.
617 			 * 1. Check no duplicates in gids passed by slave
618 			 */
619 			num_gids = mlx4_get_slave_num_gids(dev, slave);
620 			base = mlx4_get_base_gid_ix(dev, slave);
621 			gid_entry_mbox = (struct mlx4_roce_gid_entry *) (inbox->buf);
622 			for (i = 0; i < num_gids; gid_entry_mbox++, i++) {
623 				if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
624 					    sizeof(zgid_entry)))
625 					continue;
626 				gid_entry_mb1 = gid_entry_mbox + 1;
627 				for (j = i + 1; j < num_gids; gid_entry_mb1++, j++) {
628 					if (!memcmp(gid_entry_mb1->raw,
629 						    zgid_entry.raw, sizeof(zgid_entry)))
630 						continue;
631 					if (!memcmp(gid_entry_mb1->raw, gid_entry_mbox->raw,
632 						    sizeof(gid_entry_mbox->raw))) {
633 						/* found duplicate */
634 						return -EINVAL;
635 					}
636 				}
637 			}
638 
639 			/* 2. Check that do not have duplicates in OTHER
640 			 *    entries in the port GID table
641 			 */
642 			for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
643 				if (i >= base && i < base + num_gids)
644 					continue; /* don't compare to slave's current gids */
645 				gid_entry_tbl = &priv->roce_gids[port - 1][i];
646 				if (!memcmp(gid_entry_tbl->raw, zgid_entry.raw, sizeof(zgid_entry)))
647 					continue;
648 				gid_entry_mbox = (struct mlx4_roce_gid_entry *) (inbox->buf);
649 				for (j = 0; j < num_gids; gid_entry_mbox++, j++) {
650 					if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
651 						    sizeof(zgid_entry)))
652 						continue;
653 					if (!memcmp(gid_entry_mbox->raw, gid_entry_tbl->raw,
654 						    sizeof(gid_entry_tbl->raw))) {
655 						/* found duplicate */
656 						mlx4_warn(dev, "requested gid entry for slave:%d "
657 							  "is a duplicate of gid at index %d\n",
658 							  slave, i);
659 						return -EINVAL;
660 					}
661 				}
662 			}
663 
664 			/* insert slave GIDs with memcpy, starting at slave's base index */
665 			gid_entry_mbox = (struct mlx4_roce_gid_entry *) (inbox->buf);
666 			for (i = 0, offset = base; i < num_gids; gid_entry_mbox++, offset++, i++)
667 				memcpy(priv->roce_gids[port - 1][offset].raw, gid_entry_mbox->raw, 16);
668 
669 			/* Now, copy roce port gids table to current mailbox for passing to FW */
670 			gid_entry_mbox = (struct mlx4_roce_gid_entry *) (inbox->buf);
671 			for (i = 0; i < MLX4_ROCE_MAX_GIDS; gid_entry_mbox++, i++)
672 				memcpy(gid_entry_mbox->raw, priv->roce_gids[port - 1][i].raw, 16);
673 
674 			break;
675 		}
676 		return mlx4_cmd(dev, inbox->dma, in_mod & 0xffff, op_mod,
677 				MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
678 				MLX4_CMD_NATIVE);
679 	}
680 
681 	/* For IB, we only consider:
682 	 * - The capability mask, which is set to the aggregate of all
683 	 *   slave function capabilities
684 	 * - The QKey violatin counter - reset according to each request.
685 	 */
686 
687 	if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
688 		reset_qkey_viols = (*(u8 *) inbox->buf) & 0x40;
689 		new_cap_mask = ((__be32 *) inbox->buf)[2];
690 	} else {
691 		reset_qkey_viols = ((u8 *) inbox->buf)[3] & 0x1;
692 		new_cap_mask = ((__be32 *) inbox->buf)[1];
693 	}
694 
695 	/* slave may not set the IS_SM capability for the port */
696 	if (slave != mlx4_master_func_num(dev) &&
697 	    (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_IS_SM))
698 		return -EINVAL;
699 
700 	/* No DEV_MGMT in multifunc mode */
701 	if (mlx4_is_mfunc(dev) &&
702 	    (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_DEV_MGMT_SUP))
703 		return -EINVAL;
704 
705 	agg_cap_mask = 0;
706 	slave_cap_mask =
707 		priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
708 	priv->mfunc.master.slave_state[slave].ib_cap_mask[port] = new_cap_mask;
709 	for (i = 0; i < dev->num_slaves; i++)
710 		agg_cap_mask |=
711 			priv->mfunc.master.slave_state[i].ib_cap_mask[port];
712 
713 	/* only clear mailbox for guests.  Master may be setting
714 	* MTU or PKEY table size
715 	*/
716 	if (slave != dev->caps.function)
717 		memset(inbox->buf, 0, 256);
718 	if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
719 		*(u8 *) inbox->buf	   |= !!reset_qkey_viols << 6;
720 		((__be32 *) inbox->buf)[2] = agg_cap_mask;
721 	} else {
722 		((u8 *) inbox->buf)[3]     |= !!reset_qkey_viols;
723 		((__be32 *) inbox->buf)[1] = agg_cap_mask;
724 	}
725 
726 	err = mlx4_cmd(dev, inbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
727 		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
728 	if (err)
729 		priv->mfunc.master.slave_state[slave].ib_cap_mask[port] =
730 			slave_cap_mask;
731 	return err;
732 }
733 
mlx4_SET_PORT_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)734 int mlx4_SET_PORT_wrapper(struct mlx4_dev *dev, int slave,
735 			  struct mlx4_vhcr *vhcr,
736 			  struct mlx4_cmd_mailbox *inbox,
737 			  struct mlx4_cmd_mailbox *outbox,
738 			  struct mlx4_cmd_info *cmd)
739 {
740 	return mlx4_common_set_port(dev, slave, vhcr->in_modifier,
741 				    vhcr->op_modifier, inbox);
742 }
743 
744 /* bit locations for set port command with zero op modifier */
745 enum {
746 	MLX4_SET_PORT_VL_CAP	 = 4, /* bits 7:4 */
747 	MLX4_SET_PORT_MTU_CAP	 = 12, /* bits 15:12 */
748 	MLX4_CHANGE_PORT_PKEY_TBL_SZ = 20,
749 	MLX4_CHANGE_PORT_VL_CAP	 = 21,
750 	MLX4_CHANGE_PORT_MTU_CAP = 22,
751 };
752 
mlx4_SET_PORT(struct mlx4_dev * dev,u8 port,int pkey_tbl_sz)753 int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port, int pkey_tbl_sz)
754 {
755 	struct mlx4_cmd_mailbox *mailbox;
756 	int err = -EINVAL, vl_cap, pkey_tbl_flag = 0;
757 	u32 in_mod;
758 
759 	if (dev->caps.port_type[port] == MLX4_PORT_TYPE_NONE)
760 		return 0;
761 
762 	mailbox = mlx4_alloc_cmd_mailbox(dev);
763 	if (IS_ERR(mailbox))
764 		return PTR_ERR(mailbox);
765 
766 	memset(mailbox->buf, 0, 256);
767 
768 	if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) {
769 		in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
770 		err = mlx4_cmd(dev, mailbox->dma, in_mod, 1,
771 			       MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
772 			       MLX4_CMD_WRAPPED);
773 	} else {
774 		((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
775 
776 		if (pkey_tbl_sz >= 0 && mlx4_is_master(dev)) {
777 			pkey_tbl_flag = 1;
778 			((__be16 *) mailbox->buf)[20] = cpu_to_be16(pkey_tbl_sz);
779 		}
780 
781 		/* IB VL CAP enum isn't used by the firmware, just numerical values */
782 		for (vl_cap = dev->caps.vl_cap[port];
783 				vl_cap >= 1; vl_cap >>= 1) {
784 			((__be32 *) mailbox->buf)[0] = cpu_to_be32(
785 				(1 << MLX4_CHANGE_PORT_MTU_CAP) |
786 				(1 << MLX4_CHANGE_PORT_VL_CAP)  |
787 				(pkey_tbl_flag << MLX4_CHANGE_PORT_PKEY_TBL_SZ) |
788 				(dev->caps.port_ib_mtu[port] << MLX4_SET_PORT_MTU_CAP) |
789 				(vl_cap << MLX4_SET_PORT_VL_CAP));
790 			err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
791 					MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
792 			if (err != -ENOMEM)
793 				break;
794 		}
795 	}
796 
797 	mlx4_free_cmd_mailbox(dev, mailbox);
798 	return err;
799 }
800 
mlx4_SET_PORT_general(struct mlx4_dev * dev,u8 port,int mtu,u8 pptx,u8 pfctx,u8 pprx,u8 pfcrx)801 int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
802 			  u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx)
803 {
804 	struct mlx4_cmd_mailbox *mailbox;
805 	struct mlx4_set_port_general_context *context;
806 	int err;
807 	u32 in_mod;
808 
809 	mailbox = mlx4_alloc_cmd_mailbox(dev);
810 	if (IS_ERR(mailbox))
811 		return PTR_ERR(mailbox);
812 	context = mailbox->buf;
813 	memset(context, 0, sizeof *context);
814 
815 	context->flags = SET_PORT_GEN_ALL_VALID;
816 	context->mtu = cpu_to_be16(mtu);
817 	context->pptx = (pptx * (!pfctx)) << 7;
818 	context->pfctx = pfctx;
819 	context->pprx = (pprx * (!pfcrx)) << 7;
820 	context->pfcrx = pfcrx;
821 
822 	in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
823 	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
824 		       MLX4_CMD_TIME_CLASS_B,  MLX4_CMD_WRAPPED);
825 
826 	mlx4_free_cmd_mailbox(dev, mailbox);
827 	return err;
828 }
829 EXPORT_SYMBOL(mlx4_SET_PORT_general);
830 
mlx4_SET_PORT_qpn_calc(struct mlx4_dev * dev,u8 port,u32 base_qpn,u8 promisc)831 int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
832 			   u8 promisc)
833 {
834 	struct mlx4_cmd_mailbox *mailbox;
835 	struct mlx4_set_port_rqp_calc_context *context;
836 	int err;
837 	u32 in_mod;
838 	u32 m_promisc = (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) ?
839 		MCAST_DIRECT : MCAST_DEFAULT;
840 
841 	if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
842 		return 0;
843 
844 	mailbox = mlx4_alloc_cmd_mailbox(dev);
845 	if (IS_ERR(mailbox))
846 		return PTR_ERR(mailbox);
847 	context = mailbox->buf;
848 	memset(context, 0, sizeof *context);
849 
850 	context->base_qpn = cpu_to_be32(base_qpn);
851 	context->n_mac = dev->caps.log_num_macs;
852 	context->promisc = cpu_to_be32(promisc << SET_PORT_PROMISC_SHIFT |
853 				       base_qpn);
854 	context->mcast = cpu_to_be32(m_promisc << SET_PORT_MC_PROMISC_SHIFT |
855 				     base_qpn);
856 	context->intra_no_vlan = 0;
857 	context->no_vlan = MLX4_NO_VLAN_IDX;
858 	context->intra_vlan_miss = 0;
859 	context->vlan_miss = MLX4_VLAN_MISS_IDX;
860 
861 	in_mod = MLX4_SET_PORT_RQP_CALC << 8 | port;
862 	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
863 		       MLX4_CMD_TIME_CLASS_B,  MLX4_CMD_WRAPPED);
864 
865 	mlx4_free_cmd_mailbox(dev, mailbox);
866 	return err;
867 }
868 EXPORT_SYMBOL(mlx4_SET_PORT_qpn_calc);
869 
mlx4_SET_PORT_PRIO2TC(struct mlx4_dev * dev,u8 port,u8 * prio2tc)870 int mlx4_SET_PORT_PRIO2TC(struct mlx4_dev *dev, u8 port, u8 *prio2tc)
871 {
872 	struct mlx4_cmd_mailbox *mailbox;
873 	struct mlx4_set_port_prio2tc_context *context;
874 	int err;
875 	u32 in_mod;
876 	int i;
877 
878 	mailbox = mlx4_alloc_cmd_mailbox(dev);
879 	if (IS_ERR(mailbox))
880 		return PTR_ERR(mailbox);
881 	context = mailbox->buf;
882 	memset(context, 0, sizeof *context);
883 
884 	for (i = 0; i < MLX4_NUM_UP; i += 2)
885 		context->prio2tc[i >> 1] = prio2tc[i] << 4 | prio2tc[i + 1];
886 
887 	in_mod = MLX4_SET_PORT_PRIO2TC << 8 | port;
888 	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
889 		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
890 
891 	mlx4_free_cmd_mailbox(dev, mailbox);
892 	return err;
893 }
894 EXPORT_SYMBOL(mlx4_SET_PORT_PRIO2TC);
895 
mlx4_SET_PORT_SCHEDULER(struct mlx4_dev * dev,u8 port,u8 * tc_tx_bw,u8 * pg,u16 * ratelimit)896 int mlx4_SET_PORT_SCHEDULER(struct mlx4_dev *dev, u8 port, u8 *tc_tx_bw,
897 		u8 *pg, u16 *ratelimit)
898 {
899 	struct mlx4_cmd_mailbox *mailbox;
900 	struct mlx4_set_port_scheduler_context *context;
901 	int err;
902 	u32 in_mod;
903 	int i;
904 
905 	mailbox = mlx4_alloc_cmd_mailbox(dev);
906 	if (IS_ERR(mailbox))
907 		return PTR_ERR(mailbox);
908 	context = mailbox->buf;
909 	memset(context, 0, sizeof *context);
910 
911 	for (i = 0; i < MLX4_NUM_TC; i++) {
912 		struct mlx4_port_scheduler_tc_cfg_be *tc = &context->tc[i];
913 		u16 r;
914 		if (ratelimit && ratelimit[i]) {
915 			if (ratelimit[i] <= MLX4_MAX_100M_UNITS_VAL) {
916 				r = ratelimit[i];
917 				tc->max_bw_units =
918 					htons(MLX4_RATELIMIT_100M_UNITS);
919 			} else {
920 				r = ratelimit[i]/10;
921 				tc->max_bw_units =
922 					htons(MLX4_RATELIMIT_1G_UNITS);
923 			}
924 			tc->max_bw_value = htons(r);
925 		} else {
926 			tc->max_bw_value = htons(MLX4_RATELIMIT_DEFAULT);
927 			tc->max_bw_units = htons(MLX4_RATELIMIT_1G_UNITS);
928 		}
929 
930 		tc->pg = htons(pg[i]);
931 		tc->bw_precentage = htons(tc_tx_bw[i]);
932 	}
933 
934 	in_mod = MLX4_SET_PORT_SCHEDULER << 8 | port;
935 	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
936 		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
937 
938 	mlx4_free_cmd_mailbox(dev, mailbox);
939 	return err;
940 }
941 EXPORT_SYMBOL(mlx4_SET_PORT_SCHEDULER);
942 
mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)943 int mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev *dev, int slave,
944 				struct mlx4_vhcr *vhcr,
945 				struct mlx4_cmd_mailbox *inbox,
946 				struct mlx4_cmd_mailbox *outbox,
947 				struct mlx4_cmd_info *cmd)
948 {
949 	int err = 0;
950 
951 	return err;
952 }
953 
mlx4_SET_MCAST_FLTR(struct mlx4_dev * dev,u8 port,u64 mac,u64 clear,u8 mode)954 int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port,
955 			u64 mac, u64 clear, u8 mode)
956 {
957 	return mlx4_cmd(dev, (mac | (clear << 63)), port, mode,
958 			MLX4_CMD_SET_MCAST_FLTR, MLX4_CMD_TIME_CLASS_B,
959 			MLX4_CMD_WRAPPED);
960 }
961 EXPORT_SYMBOL(mlx4_SET_MCAST_FLTR);
962 
mlx4_SET_VLAN_FLTR_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)963 int mlx4_SET_VLAN_FLTR_wrapper(struct mlx4_dev *dev, int slave,
964 			       struct mlx4_vhcr *vhcr,
965 			       struct mlx4_cmd_mailbox *inbox,
966 			       struct mlx4_cmd_mailbox *outbox,
967 			       struct mlx4_cmd_info *cmd)
968 {
969 	int err = 0;
970 
971 	return err;
972 }
973 
mlx4_DUMP_ETH_STATS_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)974 int mlx4_DUMP_ETH_STATS_wrapper(struct mlx4_dev *dev, int slave,
975 				struct mlx4_vhcr *vhcr,
976 				struct mlx4_cmd_mailbox *inbox,
977 				struct mlx4_cmd_mailbox *outbox,
978 				struct mlx4_cmd_info *cmd)
979 {
980 	return 0;
981 }
982 
mlx4_set_stats_bitmap(struct mlx4_dev * dev,unsigned long * stats_bitmap)983 void mlx4_set_stats_bitmap(struct mlx4_dev *dev, unsigned long *stats_bitmap)
984 {
985 	int last_i = 0;
986 
987 	bitmap_zero(stats_bitmap, NUM_ALL_STATS);
988 
989 	if (mlx4_is_slave(dev)) {
990 		last_i = dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN ?
991 			NUM_PKT_STATS + NUM_FLOW_STATS : NUM_PKT_STATS;
992 	} else {
993 		bitmap_set(stats_bitmap, last_i, NUM_PKT_STATS);
994 		last_i = NUM_PKT_STATS;
995 
996 		if (dev->caps.flags2 &
997 		    MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN) {
998 			bitmap_set(stats_bitmap, last_i, NUM_FLOW_STATS);
999 			last_i += NUM_FLOW_STATS;
1000 		}
1001 	}
1002 
1003 	if (mlx4_is_slave(dev))
1004 		bitmap_set(stats_bitmap, last_i, NUM_VF_STATS);
1005 	last_i += NUM_VF_STATS;
1006 
1007 	if (mlx4_is_master(dev))
1008 		bitmap_set(stats_bitmap, last_i, NUM_VPORT_STATS);
1009 	last_i += NUM_VPORT_STATS;
1010 
1011 	bitmap_set(stats_bitmap, last_i, NUM_PORT_STATS);
1012 }
1013 EXPORT_SYMBOL(mlx4_set_stats_bitmap);
1014 
mlx4_get_slave_from_roce_gid(struct mlx4_dev * dev,int port,u8 * gid,int * slave_id)1015 int mlx4_get_slave_from_roce_gid(struct mlx4_dev *dev, int port, u8 *gid, int *slave_id)
1016 {
1017 	struct mlx4_priv *priv = mlx4_priv(dev);
1018 	int i, found_ix = -1;
1019 	int vf_gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
1020 
1021 	if (!mlx4_is_mfunc(dev))
1022 		return -EINVAL;
1023 
1024 	for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1025 		if (!memcmp(priv->roce_gids[port - 1][i].raw, gid, 16)) {
1026 			found_ix = i;
1027 			break;
1028 		}
1029 	}
1030 
1031 	if (found_ix >= 0) {
1032 		if (found_ix < MLX4_ROCE_PF_GIDS)
1033 			*slave_id = 0;
1034 		else if (found_ix < MLX4_ROCE_PF_GIDS + (vf_gids % dev->num_vfs) *
1035 			 (vf_gids / dev->num_vfs + 1))
1036 			*slave_id = ((found_ix - MLX4_ROCE_PF_GIDS) /
1037 				     (vf_gids / dev->num_vfs + 1)) + 1;
1038 		else
1039 			*slave_id =
1040 			((found_ix - MLX4_ROCE_PF_GIDS -
1041 			  ((vf_gids % dev->num_vfs) * ((vf_gids / dev->num_vfs + 1)))) /
1042 			 (vf_gids / dev->num_vfs)) + vf_gids % dev->num_vfs + 1;
1043 	}
1044 
1045 	return (found_ix >= 0) ? 0 : -EINVAL;
1046 }
1047 EXPORT_SYMBOL(mlx4_get_slave_from_roce_gid);
1048 
mlx4_get_roce_gid_from_slave(struct mlx4_dev * dev,int port,int slave_id,u8 * gid)1049 int mlx4_get_roce_gid_from_slave(struct mlx4_dev *dev, int port, int slave_id, u8 *gid)
1050 {
1051 	struct mlx4_priv *priv = mlx4_priv(dev);
1052 
1053 	if (!mlx4_is_master(dev))
1054 		return -EINVAL;
1055 
1056 	memcpy(gid, priv->roce_gids[port - 1][slave_id].raw, 16);
1057 	return 0;
1058 }
1059 EXPORT_SYMBOL(mlx4_get_roce_gid_from_slave);
1060 
1061