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1 /*
2  * Copyright (c) 2015, Mellanox Technologies. All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32 
33 #include <linux/etherdevice.h>
34 #include <linux/mlx5/driver.h>
35 #include <linux/mlx5/mlx5_ifc.h>
36 #include <linux/mlx5/vport.h>
37 #include <linux/mlx5/fs.h>
38 #include <linux/mlx5/mpfs.h>
39 #include "esw/acl/lgcy.h"
40 #include "esw/legacy.h"
41 #include "esw/qos.h"
42 #include "mlx5_core.h"
43 #include "lib/eq.h"
44 #include "eswitch.h"
45 #include "fs_core.h"
46 #include "devlink.h"
47 #include "ecpf.h"
48 #include "en/mod_hdr.h"
49 
50 enum {
51 	MLX5_ACTION_NONE = 0,
52 	MLX5_ACTION_ADD  = 1,
53 	MLX5_ACTION_DEL  = 2,
54 };
55 
56 /* Vport UC/MC hash node */
57 struct vport_addr {
58 	struct l2addr_node     node;
59 	u8                     action;
60 	u16                    vport;
61 	struct mlx5_flow_handle *flow_rule;
62 	bool mpfs; /* UC MAC was added to MPFs */
63 	/* A flag indicating that mac was added due to mc promiscuous vport */
64 	bool mc_promisc;
65 };
66 
mlx5_eswitch_check(const struct mlx5_core_dev * dev)67 static int mlx5_eswitch_check(const struct mlx5_core_dev *dev)
68 {
69 	if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
70 		return -EOPNOTSUPP;
71 
72 	if (!MLX5_ESWITCH_MANAGER(dev))
73 		return -EOPNOTSUPP;
74 
75 	return 0;
76 }
77 
mlx5_devlink_eswitch_get(struct devlink * devlink)78 struct mlx5_eswitch *mlx5_devlink_eswitch_get(struct devlink *devlink)
79 {
80 	struct mlx5_core_dev *dev = devlink_priv(devlink);
81 	int err;
82 
83 	err = mlx5_eswitch_check(dev);
84 	if (err)
85 		return ERR_PTR(err);
86 
87 	return dev->priv.eswitch;
88 }
89 
90 struct mlx5_vport *__must_check
mlx5_eswitch_get_vport(struct mlx5_eswitch * esw,u16 vport_num)91 mlx5_eswitch_get_vport(struct mlx5_eswitch *esw, u16 vport_num)
92 {
93 	struct mlx5_vport *vport;
94 
95 	if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager))
96 		return ERR_PTR(-EPERM);
97 
98 	vport = xa_load(&esw->vports, vport_num);
99 	if (!vport) {
100 		esw_debug(esw->dev, "vport out of range: num(0x%x)\n", vport_num);
101 		return ERR_PTR(-EINVAL);
102 	}
103 	return vport;
104 }
105 
arm_vport_context_events_cmd(struct mlx5_core_dev * dev,u16 vport,u32 events_mask)106 static int arm_vport_context_events_cmd(struct mlx5_core_dev *dev, u16 vport,
107 					u32 events_mask)
108 {
109 	u32 in[MLX5_ST_SZ_DW(modify_nic_vport_context_in)] = {};
110 	void *nic_vport_ctx;
111 
112 	MLX5_SET(modify_nic_vport_context_in, in,
113 		 opcode, MLX5_CMD_OP_MODIFY_NIC_VPORT_CONTEXT);
114 	MLX5_SET(modify_nic_vport_context_in, in, field_select.change_event, 1);
115 	MLX5_SET(modify_nic_vport_context_in, in, vport_number, vport);
116 	MLX5_SET(modify_nic_vport_context_in, in, other_vport, 1);
117 	nic_vport_ctx = MLX5_ADDR_OF(modify_nic_vport_context_in,
118 				     in, nic_vport_context);
119 
120 	MLX5_SET(nic_vport_context, nic_vport_ctx, arm_change_event, 1);
121 
122 	if (events_mask & MLX5_VPORT_UC_ADDR_CHANGE)
123 		MLX5_SET(nic_vport_context, nic_vport_ctx,
124 			 event_on_uc_address_change, 1);
125 	if (events_mask & MLX5_VPORT_MC_ADDR_CHANGE)
126 		MLX5_SET(nic_vport_context, nic_vport_ctx,
127 			 event_on_mc_address_change, 1);
128 	if (events_mask & MLX5_VPORT_PROMISC_CHANGE)
129 		MLX5_SET(nic_vport_context, nic_vport_ctx,
130 			 event_on_promisc_change, 1);
131 
132 	return mlx5_cmd_exec_in(dev, modify_nic_vport_context, in);
133 }
134 
135 /* E-Switch vport context HW commands */
mlx5_eswitch_modify_esw_vport_context(struct mlx5_core_dev * dev,u16 vport,bool other_vport,void * in)136 int mlx5_eswitch_modify_esw_vport_context(struct mlx5_core_dev *dev, u16 vport,
137 					  bool other_vport, void *in)
138 {
139 	MLX5_SET(modify_esw_vport_context_in, in, opcode,
140 		 MLX5_CMD_OP_MODIFY_ESW_VPORT_CONTEXT);
141 	MLX5_SET(modify_esw_vport_context_in, in, vport_number, vport);
142 	MLX5_SET(modify_esw_vport_context_in, in, other_vport, other_vport);
143 	return mlx5_cmd_exec_in(dev, modify_esw_vport_context, in);
144 }
145 
modify_esw_vport_cvlan(struct mlx5_core_dev * dev,u16 vport,u16 vlan,u8 qos,u8 set_flags)146 static int modify_esw_vport_cvlan(struct mlx5_core_dev *dev, u16 vport,
147 				  u16 vlan, u8 qos, u8 set_flags)
148 {
149 	u32 in[MLX5_ST_SZ_DW(modify_esw_vport_context_in)] = {};
150 
151 	if (!MLX5_CAP_ESW(dev, vport_cvlan_strip) ||
152 	    !MLX5_CAP_ESW(dev, vport_cvlan_insert_if_not_exist))
153 		return -EOPNOTSUPP;
154 
155 	esw_debug(dev, "Set Vport[%d] VLAN %d qos %d set=%x\n",
156 		  vport, vlan, qos, set_flags);
157 
158 	if (set_flags & SET_VLAN_STRIP)
159 		MLX5_SET(modify_esw_vport_context_in, in,
160 			 esw_vport_context.vport_cvlan_strip, 1);
161 
162 	if (set_flags & SET_VLAN_INSERT) {
163 		if (MLX5_CAP_ESW(dev, vport_cvlan_insert_always)) {
164 			/* insert either if vlan exist in packet or not */
165 			MLX5_SET(modify_esw_vport_context_in, in,
166 				 esw_vport_context.vport_cvlan_insert,
167 				 MLX5_VPORT_CVLAN_INSERT_ALWAYS);
168 		} else {
169 			/* insert only if no vlan in packet */
170 			MLX5_SET(modify_esw_vport_context_in, in,
171 				 esw_vport_context.vport_cvlan_insert,
172 				 MLX5_VPORT_CVLAN_INSERT_WHEN_NO_CVLAN);
173 		}
174 		MLX5_SET(modify_esw_vport_context_in, in,
175 			 esw_vport_context.cvlan_pcp, qos);
176 		MLX5_SET(modify_esw_vport_context_in, in,
177 			 esw_vport_context.cvlan_id, vlan);
178 	}
179 
180 	MLX5_SET(modify_esw_vport_context_in, in,
181 		 field_select.vport_cvlan_strip, 1);
182 	MLX5_SET(modify_esw_vport_context_in, in,
183 		 field_select.vport_cvlan_insert, 1);
184 
185 	return mlx5_eswitch_modify_esw_vport_context(dev, vport, true, in);
186 }
187 
188 /* E-Switch FDB */
189 static struct mlx5_flow_handle *
__esw_fdb_set_vport_rule(struct mlx5_eswitch * esw,u16 vport,bool rx_rule,u8 mac_c[ETH_ALEN],u8 mac_v[ETH_ALEN])190 __esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u16 vport, bool rx_rule,
191 			 u8 mac_c[ETH_ALEN], u8 mac_v[ETH_ALEN])
192 {
193 	int match_header = (is_zero_ether_addr(mac_c) ? 0 :
194 			    MLX5_MATCH_OUTER_HEADERS);
195 	struct mlx5_flow_handle *flow_rule = NULL;
196 	struct mlx5_flow_act flow_act = {0};
197 	struct mlx5_flow_destination dest = {};
198 	struct mlx5_flow_spec *spec;
199 	void *mv_misc = NULL;
200 	void *mc_misc = NULL;
201 	u8 *dmac_v = NULL;
202 	u8 *dmac_c = NULL;
203 
204 	if (rx_rule)
205 		match_header |= MLX5_MATCH_MISC_PARAMETERS;
206 
207 	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
208 	if (!spec)
209 		return NULL;
210 
211 	dmac_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
212 			      outer_headers.dmac_47_16);
213 	dmac_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
214 			      outer_headers.dmac_47_16);
215 
216 	if (match_header & MLX5_MATCH_OUTER_HEADERS) {
217 		ether_addr_copy(dmac_v, mac_v);
218 		ether_addr_copy(dmac_c, mac_c);
219 	}
220 
221 	if (match_header & MLX5_MATCH_MISC_PARAMETERS) {
222 		mv_misc  = MLX5_ADDR_OF(fte_match_param, spec->match_value,
223 					misc_parameters);
224 		mc_misc  = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
225 					misc_parameters);
226 		MLX5_SET(fte_match_set_misc, mv_misc, source_port, MLX5_VPORT_UPLINK);
227 		MLX5_SET_TO_ONES(fte_match_set_misc, mc_misc, source_port);
228 	}
229 
230 	dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
231 	dest.vport.num = vport;
232 
233 	esw_debug(esw->dev,
234 		  "\tFDB add rule dmac_v(%pM) dmac_c(%pM) -> vport(%d)\n",
235 		  dmac_v, dmac_c, vport);
236 	spec->match_criteria_enable = match_header;
237 	flow_act.action =  MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
238 	flow_rule =
239 		mlx5_add_flow_rules(esw->fdb_table.legacy.fdb, spec,
240 				    &flow_act, &dest, 1);
241 	if (IS_ERR(flow_rule)) {
242 		esw_warn(esw->dev,
243 			 "FDB: Failed to add flow rule: dmac_v(%pM) dmac_c(%pM) -> vport(%d), err(%ld)\n",
244 			 dmac_v, dmac_c, vport, PTR_ERR(flow_rule));
245 		flow_rule = NULL;
246 	}
247 
248 	kvfree(spec);
249 	return flow_rule;
250 }
251 
252 static struct mlx5_flow_handle *
esw_fdb_set_vport_rule(struct mlx5_eswitch * esw,u8 mac[ETH_ALEN],u16 vport)253 esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u8 mac[ETH_ALEN], u16 vport)
254 {
255 	u8 mac_c[ETH_ALEN];
256 
257 	eth_broadcast_addr(mac_c);
258 	return __esw_fdb_set_vport_rule(esw, vport, false, mac_c, mac);
259 }
260 
261 static struct mlx5_flow_handle *
esw_fdb_set_vport_allmulti_rule(struct mlx5_eswitch * esw,u16 vport)262 esw_fdb_set_vport_allmulti_rule(struct mlx5_eswitch *esw, u16 vport)
263 {
264 	u8 mac_c[ETH_ALEN];
265 	u8 mac_v[ETH_ALEN];
266 
267 	eth_zero_addr(mac_c);
268 	eth_zero_addr(mac_v);
269 	mac_c[0] = 0x01;
270 	mac_v[0] = 0x01;
271 	return __esw_fdb_set_vport_rule(esw, vport, false, mac_c, mac_v);
272 }
273 
274 static struct mlx5_flow_handle *
esw_fdb_set_vport_promisc_rule(struct mlx5_eswitch * esw,u16 vport)275 esw_fdb_set_vport_promisc_rule(struct mlx5_eswitch *esw, u16 vport)
276 {
277 	u8 mac_c[ETH_ALEN];
278 	u8 mac_v[ETH_ALEN];
279 
280 	eth_zero_addr(mac_c);
281 	eth_zero_addr(mac_v);
282 	return __esw_fdb_set_vport_rule(esw, vport, true, mac_c, mac_v);
283 }
284 
285 /* E-Switch vport UC/MC lists management */
286 typedef int (*vport_addr_action)(struct mlx5_eswitch *esw,
287 				 struct vport_addr *vaddr);
288 
esw_add_uc_addr(struct mlx5_eswitch * esw,struct vport_addr * vaddr)289 static int esw_add_uc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
290 {
291 	u8 *mac = vaddr->node.addr;
292 	u16 vport = vaddr->vport;
293 	int err;
294 
295 	/* Skip mlx5_mpfs_add_mac for eswitch_managers,
296 	 * it is already done by its netdev in mlx5e_execute_l2_action
297 	 */
298 	if (mlx5_esw_is_manager_vport(esw, vport))
299 		goto fdb_add;
300 
301 	err = mlx5_mpfs_add_mac(esw->dev, mac);
302 	if (err) {
303 		esw_warn(esw->dev,
304 			 "Failed to add L2 table mac(%pM) for vport(0x%x), err(%d)\n",
305 			 mac, vport, err);
306 		return err;
307 	}
308 	vaddr->mpfs = true;
309 
310 fdb_add:
311 	/* SRIOV is enabled: Forward UC MAC to vport */
312 	if (esw->fdb_table.legacy.fdb && esw->mode == MLX5_ESWITCH_LEGACY)
313 		vaddr->flow_rule = esw_fdb_set_vport_rule(esw, mac, vport);
314 
315 	esw_debug(esw->dev, "\tADDED UC MAC: vport[%d] %pM fr(%p)\n",
316 		  vport, mac, vaddr->flow_rule);
317 
318 	return 0;
319 }
320 
esw_del_uc_addr(struct mlx5_eswitch * esw,struct vport_addr * vaddr)321 static int esw_del_uc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
322 {
323 	u8 *mac = vaddr->node.addr;
324 	u16 vport = vaddr->vport;
325 	int err = 0;
326 
327 	/* Skip mlx5_mpfs_del_mac for eswitch managers,
328 	 * it is already done by its netdev in mlx5e_execute_l2_action
329 	 */
330 	if (!vaddr->mpfs || mlx5_esw_is_manager_vport(esw, vport))
331 		goto fdb_del;
332 
333 	err = mlx5_mpfs_del_mac(esw->dev, mac);
334 	if (err)
335 		esw_warn(esw->dev,
336 			 "Failed to del L2 table mac(%pM) for vport(%d), err(%d)\n",
337 			 mac, vport, err);
338 	vaddr->mpfs = false;
339 
340 fdb_del:
341 	if (vaddr->flow_rule)
342 		mlx5_del_flow_rules(vaddr->flow_rule);
343 	vaddr->flow_rule = NULL;
344 
345 	return 0;
346 }
347 
update_allmulti_vports(struct mlx5_eswitch * esw,struct vport_addr * vaddr,struct esw_mc_addr * esw_mc)348 static void update_allmulti_vports(struct mlx5_eswitch *esw,
349 				   struct vport_addr *vaddr,
350 				   struct esw_mc_addr *esw_mc)
351 {
352 	u8 *mac = vaddr->node.addr;
353 	struct mlx5_vport *vport;
354 	unsigned long i;
355 	u16 vport_num;
356 
357 	mlx5_esw_for_each_vport(esw, i, vport) {
358 		struct hlist_head *vport_hash = vport->mc_list;
359 		struct vport_addr *iter_vaddr =
360 					l2addr_hash_find(vport_hash,
361 							 mac,
362 							 struct vport_addr);
363 		vport_num = vport->vport;
364 		if (IS_ERR_OR_NULL(vport->allmulti_rule) ||
365 		    vaddr->vport == vport_num)
366 			continue;
367 		switch (vaddr->action) {
368 		case MLX5_ACTION_ADD:
369 			if (iter_vaddr)
370 				continue;
371 			iter_vaddr = l2addr_hash_add(vport_hash, mac,
372 						     struct vport_addr,
373 						     GFP_KERNEL);
374 			if (!iter_vaddr) {
375 				esw_warn(esw->dev,
376 					 "ALL-MULTI: Failed to add MAC(%pM) to vport[%d] DB\n",
377 					 mac, vport_num);
378 				continue;
379 			}
380 			iter_vaddr->vport = vport_num;
381 			iter_vaddr->flow_rule =
382 					esw_fdb_set_vport_rule(esw,
383 							       mac,
384 							       vport_num);
385 			iter_vaddr->mc_promisc = true;
386 			break;
387 		case MLX5_ACTION_DEL:
388 			if (!iter_vaddr)
389 				continue;
390 			mlx5_del_flow_rules(iter_vaddr->flow_rule);
391 			l2addr_hash_del(iter_vaddr);
392 			break;
393 		}
394 	}
395 }
396 
esw_add_mc_addr(struct mlx5_eswitch * esw,struct vport_addr * vaddr)397 static int esw_add_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
398 {
399 	struct hlist_head *hash = esw->mc_table;
400 	struct esw_mc_addr *esw_mc;
401 	u8 *mac = vaddr->node.addr;
402 	u16 vport = vaddr->vport;
403 
404 	if (!esw->fdb_table.legacy.fdb)
405 		return 0;
406 
407 	esw_mc = l2addr_hash_find(hash, mac, struct esw_mc_addr);
408 	if (esw_mc)
409 		goto add;
410 
411 	esw_mc = l2addr_hash_add(hash, mac, struct esw_mc_addr, GFP_KERNEL);
412 	if (!esw_mc)
413 		return -ENOMEM;
414 
415 	esw_mc->uplink_rule = /* Forward MC MAC to Uplink */
416 		esw_fdb_set_vport_rule(esw, mac, MLX5_VPORT_UPLINK);
417 
418 	/* Add this multicast mac to all the mc promiscuous vports */
419 	update_allmulti_vports(esw, vaddr, esw_mc);
420 
421 add:
422 	/* If the multicast mac is added as a result of mc promiscuous vport,
423 	 * don't increment the multicast ref count
424 	 */
425 	if (!vaddr->mc_promisc)
426 		esw_mc->refcnt++;
427 
428 	/* Forward MC MAC to vport */
429 	vaddr->flow_rule = esw_fdb_set_vport_rule(esw, mac, vport);
430 	esw_debug(esw->dev,
431 		  "\tADDED MC MAC: vport[%d] %pM fr(%p) refcnt(%d) uplinkfr(%p)\n",
432 		  vport, mac, vaddr->flow_rule,
433 		  esw_mc->refcnt, esw_mc->uplink_rule);
434 	return 0;
435 }
436 
esw_del_mc_addr(struct mlx5_eswitch * esw,struct vport_addr * vaddr)437 static int esw_del_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
438 {
439 	struct hlist_head *hash = esw->mc_table;
440 	struct esw_mc_addr *esw_mc;
441 	u8 *mac = vaddr->node.addr;
442 	u16 vport = vaddr->vport;
443 
444 	if (!esw->fdb_table.legacy.fdb)
445 		return 0;
446 
447 	esw_mc = l2addr_hash_find(hash, mac, struct esw_mc_addr);
448 	if (!esw_mc) {
449 		esw_warn(esw->dev,
450 			 "Failed to find eswitch MC addr for MAC(%pM) vport(%d)",
451 			 mac, vport);
452 		return -EINVAL;
453 	}
454 	esw_debug(esw->dev,
455 		  "\tDELETE MC MAC: vport[%d] %pM fr(%p) refcnt(%d) uplinkfr(%p)\n",
456 		  vport, mac, vaddr->flow_rule, esw_mc->refcnt,
457 		  esw_mc->uplink_rule);
458 
459 	if (vaddr->flow_rule)
460 		mlx5_del_flow_rules(vaddr->flow_rule);
461 	vaddr->flow_rule = NULL;
462 
463 	/* If the multicast mac is added as a result of mc promiscuous vport,
464 	 * don't decrement the multicast ref count.
465 	 */
466 	if (vaddr->mc_promisc || (--esw_mc->refcnt > 0))
467 		return 0;
468 
469 	/* Remove this multicast mac from all the mc promiscuous vports */
470 	update_allmulti_vports(esw, vaddr, esw_mc);
471 
472 	if (esw_mc->uplink_rule)
473 		mlx5_del_flow_rules(esw_mc->uplink_rule);
474 
475 	l2addr_hash_del(esw_mc);
476 	return 0;
477 }
478 
479 /* Apply vport UC/MC list to HW l2 table and FDB table */
esw_apply_vport_addr_list(struct mlx5_eswitch * esw,struct mlx5_vport * vport,int list_type)480 static void esw_apply_vport_addr_list(struct mlx5_eswitch *esw,
481 				      struct mlx5_vport *vport, int list_type)
482 {
483 	bool is_uc = list_type == MLX5_NVPRT_LIST_TYPE_UC;
484 	vport_addr_action vport_addr_add;
485 	vport_addr_action vport_addr_del;
486 	struct vport_addr *addr;
487 	struct l2addr_node *node;
488 	struct hlist_head *hash;
489 	struct hlist_node *tmp;
490 	int hi;
491 
492 	vport_addr_add = is_uc ? esw_add_uc_addr :
493 				 esw_add_mc_addr;
494 	vport_addr_del = is_uc ? esw_del_uc_addr :
495 				 esw_del_mc_addr;
496 
497 	hash = is_uc ? vport->uc_list : vport->mc_list;
498 	for_each_l2hash_node(node, tmp, hash, hi) {
499 		addr = container_of(node, struct vport_addr, node);
500 		switch (addr->action) {
501 		case MLX5_ACTION_ADD:
502 			vport_addr_add(esw, addr);
503 			addr->action = MLX5_ACTION_NONE;
504 			break;
505 		case MLX5_ACTION_DEL:
506 			vport_addr_del(esw, addr);
507 			l2addr_hash_del(addr);
508 			break;
509 		}
510 	}
511 }
512 
513 /* Sync vport UC/MC list from vport context */
esw_update_vport_addr_list(struct mlx5_eswitch * esw,struct mlx5_vport * vport,int list_type)514 static void esw_update_vport_addr_list(struct mlx5_eswitch *esw,
515 				       struct mlx5_vport *vport, int list_type)
516 {
517 	bool is_uc = list_type == MLX5_NVPRT_LIST_TYPE_UC;
518 	u8 (*mac_list)[ETH_ALEN];
519 	struct l2addr_node *node;
520 	struct vport_addr *addr;
521 	struct hlist_head *hash;
522 	struct hlist_node *tmp;
523 	int size;
524 	int err;
525 	int hi;
526 	int i;
527 
528 	size = is_uc ? MLX5_MAX_UC_PER_VPORT(esw->dev) :
529 		       MLX5_MAX_MC_PER_VPORT(esw->dev);
530 
531 	mac_list = kcalloc(size, ETH_ALEN, GFP_KERNEL);
532 	if (!mac_list)
533 		return;
534 
535 	hash = is_uc ? vport->uc_list : vport->mc_list;
536 
537 	for_each_l2hash_node(node, tmp, hash, hi) {
538 		addr = container_of(node, struct vport_addr, node);
539 		addr->action = MLX5_ACTION_DEL;
540 	}
541 
542 	if (!vport->enabled)
543 		goto out;
544 
545 	err = mlx5_query_nic_vport_mac_list(esw->dev, vport->vport, list_type,
546 					    mac_list, &size);
547 	if (err)
548 		goto out;
549 	esw_debug(esw->dev, "vport[%d] context update %s list size (%d)\n",
550 		  vport->vport, is_uc ? "UC" : "MC", size);
551 
552 	for (i = 0; i < size; i++) {
553 		if (is_uc && !is_valid_ether_addr(mac_list[i]))
554 			continue;
555 
556 		if (!is_uc && !is_multicast_ether_addr(mac_list[i]))
557 			continue;
558 
559 		addr = l2addr_hash_find(hash, mac_list[i], struct vport_addr);
560 		if (addr) {
561 			addr->action = MLX5_ACTION_NONE;
562 			/* If this mac was previously added because of allmulti
563 			 * promiscuous rx mode, its now converted to be original
564 			 * vport mac.
565 			 */
566 			if (addr->mc_promisc) {
567 				struct esw_mc_addr *esw_mc =
568 					l2addr_hash_find(esw->mc_table,
569 							 mac_list[i],
570 							 struct esw_mc_addr);
571 				if (!esw_mc) {
572 					esw_warn(esw->dev,
573 						 "Failed to MAC(%pM) in mcast DB\n",
574 						 mac_list[i]);
575 					continue;
576 				}
577 				esw_mc->refcnt++;
578 				addr->mc_promisc = false;
579 			}
580 			continue;
581 		}
582 
583 		addr = l2addr_hash_add(hash, mac_list[i], struct vport_addr,
584 				       GFP_KERNEL);
585 		if (!addr) {
586 			esw_warn(esw->dev,
587 				 "Failed to add MAC(%pM) to vport[%d] DB\n",
588 				 mac_list[i], vport->vport);
589 			continue;
590 		}
591 		addr->vport = vport->vport;
592 		addr->action = MLX5_ACTION_ADD;
593 	}
594 out:
595 	kfree(mac_list);
596 }
597 
598 /* Sync vport UC/MC list from vport context
599  * Must be called after esw_update_vport_addr_list
600  */
esw_update_vport_mc_promisc(struct mlx5_eswitch * esw,struct mlx5_vport * vport)601 static void esw_update_vport_mc_promisc(struct mlx5_eswitch *esw,
602 					struct mlx5_vport *vport)
603 {
604 	struct l2addr_node *node;
605 	struct vport_addr *addr;
606 	struct hlist_head *hash;
607 	struct hlist_node *tmp;
608 	int hi;
609 
610 	hash = vport->mc_list;
611 
612 	for_each_l2hash_node(node, tmp, esw->mc_table, hi) {
613 		u8 *mac = node->addr;
614 
615 		addr = l2addr_hash_find(hash, mac, struct vport_addr);
616 		if (addr) {
617 			if (addr->action == MLX5_ACTION_DEL)
618 				addr->action = MLX5_ACTION_NONE;
619 			continue;
620 		}
621 		addr = l2addr_hash_add(hash, mac, struct vport_addr,
622 				       GFP_KERNEL);
623 		if (!addr) {
624 			esw_warn(esw->dev,
625 				 "Failed to add allmulti MAC(%pM) to vport[%d] DB\n",
626 				 mac, vport->vport);
627 			continue;
628 		}
629 		addr->vport = vport->vport;
630 		addr->action = MLX5_ACTION_ADD;
631 		addr->mc_promisc = true;
632 	}
633 }
634 
635 /* Apply vport rx mode to HW FDB table */
esw_apply_vport_rx_mode(struct mlx5_eswitch * esw,struct mlx5_vport * vport,bool promisc,bool mc_promisc)636 static void esw_apply_vport_rx_mode(struct mlx5_eswitch *esw,
637 				    struct mlx5_vport *vport,
638 				    bool promisc, bool mc_promisc)
639 {
640 	struct esw_mc_addr *allmulti_addr = &esw->mc_promisc;
641 
642 	if (IS_ERR_OR_NULL(vport->allmulti_rule) != mc_promisc)
643 		goto promisc;
644 
645 	if (mc_promisc) {
646 		vport->allmulti_rule =
647 			esw_fdb_set_vport_allmulti_rule(esw, vport->vport);
648 		if (!allmulti_addr->uplink_rule)
649 			allmulti_addr->uplink_rule =
650 				esw_fdb_set_vport_allmulti_rule(esw,
651 								MLX5_VPORT_UPLINK);
652 		allmulti_addr->refcnt++;
653 	} else if (vport->allmulti_rule) {
654 		mlx5_del_flow_rules(vport->allmulti_rule);
655 		vport->allmulti_rule = NULL;
656 
657 		if (--allmulti_addr->refcnt > 0)
658 			goto promisc;
659 
660 		if (allmulti_addr->uplink_rule)
661 			mlx5_del_flow_rules(allmulti_addr->uplink_rule);
662 		allmulti_addr->uplink_rule = NULL;
663 	}
664 
665 promisc:
666 	if (IS_ERR_OR_NULL(vport->promisc_rule) != promisc)
667 		return;
668 
669 	if (promisc) {
670 		vport->promisc_rule =
671 			esw_fdb_set_vport_promisc_rule(esw, vport->vport);
672 	} else if (vport->promisc_rule) {
673 		mlx5_del_flow_rules(vport->promisc_rule);
674 		vport->promisc_rule = NULL;
675 	}
676 }
677 
678 /* Sync vport rx mode from vport context */
esw_update_vport_rx_mode(struct mlx5_eswitch * esw,struct mlx5_vport * vport)679 static void esw_update_vport_rx_mode(struct mlx5_eswitch *esw,
680 				     struct mlx5_vport *vport)
681 {
682 	int promisc_all = 0;
683 	int promisc_uc = 0;
684 	int promisc_mc = 0;
685 	int err;
686 
687 	err = mlx5_query_nic_vport_promisc(esw->dev,
688 					   vport->vport,
689 					   &promisc_uc,
690 					   &promisc_mc,
691 					   &promisc_all);
692 	if (err)
693 		return;
694 	esw_debug(esw->dev, "vport[%d] context update rx mode promisc_all=%d, all_multi=%d\n",
695 		  vport->vport, promisc_all, promisc_mc);
696 
697 	if (!vport->info.trusted || !vport->enabled) {
698 		promisc_uc = 0;
699 		promisc_mc = 0;
700 		promisc_all = 0;
701 	}
702 
703 	esw_apply_vport_rx_mode(esw, vport, promisc_all,
704 				(promisc_all || promisc_mc));
705 }
706 
esw_vport_change_handle_locked(struct mlx5_vport * vport)707 void esw_vport_change_handle_locked(struct mlx5_vport *vport)
708 {
709 	struct mlx5_core_dev *dev = vport->dev;
710 	struct mlx5_eswitch *esw = dev->priv.eswitch;
711 	u8 mac[ETH_ALEN];
712 
713 	mlx5_query_nic_vport_mac_address(dev, vport->vport, true, mac);
714 	esw_debug(dev, "vport[%d] Context Changed: perm mac: %pM\n",
715 		  vport->vport, mac);
716 
717 	if (vport->enabled_events & MLX5_VPORT_UC_ADDR_CHANGE) {
718 		esw_update_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_UC);
719 		esw_apply_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_UC);
720 	}
721 
722 	if (vport->enabled_events & MLX5_VPORT_MC_ADDR_CHANGE)
723 		esw_update_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_MC);
724 
725 	if (vport->enabled_events & MLX5_VPORT_PROMISC_CHANGE) {
726 		esw_update_vport_rx_mode(esw, vport);
727 		if (!IS_ERR_OR_NULL(vport->allmulti_rule))
728 			esw_update_vport_mc_promisc(esw, vport);
729 	}
730 
731 	if (vport->enabled_events & (MLX5_VPORT_PROMISC_CHANGE | MLX5_VPORT_MC_ADDR_CHANGE))
732 		esw_apply_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_MC);
733 
734 	esw_debug(esw->dev, "vport[%d] Context Changed: Done\n", vport->vport);
735 	if (vport->enabled)
736 		arm_vport_context_events_cmd(dev, vport->vport,
737 					     vport->enabled_events);
738 }
739 
esw_vport_change_handler(struct work_struct * work)740 static void esw_vport_change_handler(struct work_struct *work)
741 {
742 	struct mlx5_vport *vport =
743 		container_of(work, struct mlx5_vport, vport_change_handler);
744 	struct mlx5_eswitch *esw = vport->dev->priv.eswitch;
745 
746 	mutex_lock(&esw->state_lock);
747 	esw_vport_change_handle_locked(vport);
748 	mutex_unlock(&esw->state_lock);
749 }
750 
node_guid_gen_from_mac(u64 * node_guid,const u8 * mac)751 static void node_guid_gen_from_mac(u64 *node_guid, const u8 *mac)
752 {
753 	((u8 *)node_guid)[7] = mac[0];
754 	((u8 *)node_guid)[6] = mac[1];
755 	((u8 *)node_guid)[5] = mac[2];
756 	((u8 *)node_guid)[4] = 0xff;
757 	((u8 *)node_guid)[3] = 0xfe;
758 	((u8 *)node_guid)[2] = mac[3];
759 	((u8 *)node_guid)[1] = mac[4];
760 	((u8 *)node_guid)[0] = mac[5];
761 }
762 
esw_vport_setup_acl(struct mlx5_eswitch * esw,struct mlx5_vport * vport)763 static int esw_vport_setup_acl(struct mlx5_eswitch *esw,
764 			       struct mlx5_vport *vport)
765 {
766 	if (esw->mode == MLX5_ESWITCH_LEGACY)
767 		return esw_legacy_vport_acl_setup(esw, vport);
768 	else
769 		return esw_vport_create_offloads_acl_tables(esw, vport);
770 }
771 
esw_vport_cleanup_acl(struct mlx5_eswitch * esw,struct mlx5_vport * vport)772 static void esw_vport_cleanup_acl(struct mlx5_eswitch *esw,
773 				  struct mlx5_vport *vport)
774 {
775 	if (esw->mode == MLX5_ESWITCH_LEGACY)
776 		esw_legacy_vport_acl_cleanup(esw, vport);
777 	else
778 		esw_vport_destroy_offloads_acl_tables(esw, vport);
779 }
780 
esw_vport_setup(struct mlx5_eswitch * esw,struct mlx5_vport * vport)781 static int esw_vport_setup(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
782 {
783 	bool vst_mode_steering = esw_vst_mode_is_steering(esw);
784 	u16 vport_num = vport->vport;
785 	int flags;
786 	int err;
787 
788 	err = esw_vport_setup_acl(esw, vport);
789 	if (err)
790 		return err;
791 
792 	/* Attach vport to the eswitch rate limiter */
793 	mlx5_esw_qos_vport_enable(esw, vport, vport->qos.max_rate, vport->qos.bw_share);
794 
795 	if (mlx5_esw_is_manager_vport(esw, vport_num))
796 		return 0;
797 
798 	mlx5_modify_vport_admin_state(esw->dev,
799 				      MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
800 				      vport_num, 1,
801 				      vport->info.link_state);
802 
803 	/* Host PF has its own mac/guid. */
804 	if (vport_num) {
805 		mlx5_modify_nic_vport_mac_address(esw->dev, vport_num,
806 						  vport->info.mac);
807 		mlx5_modify_nic_vport_node_guid(esw->dev, vport_num,
808 						vport->info.node_guid);
809 	}
810 
811 	flags = (vport->info.vlan || vport->info.qos) ?
812 		SET_VLAN_STRIP | SET_VLAN_INSERT : 0;
813 	if (esw->mode == MLX5_ESWITCH_OFFLOADS || !vst_mode_steering)
814 		modify_esw_vport_cvlan(esw->dev, vport_num, vport->info.vlan,
815 				       vport->info.qos, flags);
816 
817 	return 0;
818 }
819 
820 /* Don't cleanup vport->info, it's needed to restore vport configuration */
esw_vport_cleanup(struct mlx5_eswitch * esw,struct mlx5_vport * vport)821 static void esw_vport_cleanup(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
822 {
823 	u16 vport_num = vport->vport;
824 
825 	if (!mlx5_esw_is_manager_vport(esw, vport_num))
826 		mlx5_modify_vport_admin_state(esw->dev,
827 					      MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
828 					      vport_num, 1,
829 					      MLX5_VPORT_ADMIN_STATE_DOWN);
830 
831 	mlx5_esw_qos_vport_disable(esw, vport);
832 	esw_vport_cleanup_acl(esw, vport);
833 }
834 
mlx5_esw_vport_enable(struct mlx5_eswitch * esw,u16 vport_num,enum mlx5_eswitch_vport_event enabled_events)835 int mlx5_esw_vport_enable(struct mlx5_eswitch *esw, u16 vport_num,
836 			  enum mlx5_eswitch_vport_event enabled_events)
837 {
838 	struct mlx5_vport *vport;
839 	int ret;
840 
841 	vport = mlx5_eswitch_get_vport(esw, vport_num);
842 	if (IS_ERR(vport))
843 		return PTR_ERR(vport);
844 
845 	mutex_lock(&esw->state_lock);
846 	WARN_ON(vport->enabled);
847 
848 	esw_debug(esw->dev, "Enabling VPORT(%d)\n", vport_num);
849 
850 	ret = esw_vport_setup(esw, vport);
851 	if (ret)
852 		goto done;
853 
854 	/* Sync with current vport context */
855 	vport->enabled_events = enabled_events;
856 	vport->enabled = true;
857 
858 	/* Esw manager is trusted by default. Host PF (vport 0) is trusted as well
859 	 * in smartNIC as it's a vport group manager.
860 	 */
861 	if (mlx5_esw_is_manager_vport(esw, vport_num) ||
862 	    (!vport_num && mlx5_core_is_ecpf(esw->dev)))
863 		vport->info.trusted = true;
864 
865 	if (!mlx5_esw_is_manager_vport(esw, vport->vport) &&
866 	    MLX5_CAP_GEN(esw->dev, vhca_resource_manager)) {
867 		ret = mlx5_esw_vport_vhca_id_set(esw, vport_num);
868 		if (ret)
869 			goto err_vhca_mapping;
870 	}
871 
872 	/* External controller host PF has factory programmed MAC.
873 	 * Read it from the device.
874 	 */
875 	if (mlx5_core_is_ecpf(esw->dev) && vport_num == MLX5_VPORT_PF)
876 		mlx5_query_nic_vport_mac_address(esw->dev, vport_num, true, vport->info.mac);
877 
878 	esw_vport_change_handle_locked(vport);
879 
880 	esw->enabled_vports++;
881 	esw_debug(esw->dev, "Enabled VPORT(%d)\n", vport_num);
882 done:
883 	mutex_unlock(&esw->state_lock);
884 	return ret;
885 
886 err_vhca_mapping:
887 	esw_vport_cleanup(esw, vport);
888 	mutex_unlock(&esw->state_lock);
889 	return ret;
890 }
891 
mlx5_esw_vport_disable(struct mlx5_eswitch * esw,u16 vport_num)892 void mlx5_esw_vport_disable(struct mlx5_eswitch *esw, u16 vport_num)
893 {
894 	struct mlx5_vport *vport;
895 
896 	vport = mlx5_eswitch_get_vport(esw, vport_num);
897 	if (IS_ERR(vport))
898 		return;
899 
900 	mutex_lock(&esw->state_lock);
901 	if (!vport->enabled)
902 		goto done;
903 
904 	esw_debug(esw->dev, "Disabling vport(%d)\n", vport_num);
905 	/* Mark this vport as disabled to discard new events */
906 	vport->enabled = false;
907 
908 	/* Disable events from this vport */
909 	arm_vport_context_events_cmd(esw->dev, vport->vport, 0);
910 
911 	if (!mlx5_esw_is_manager_vport(esw, vport->vport) &&
912 	    MLX5_CAP_GEN(esw->dev, vhca_resource_manager))
913 		mlx5_esw_vport_vhca_id_clear(esw, vport_num);
914 
915 	/* We don't assume VFs will cleanup after themselves.
916 	 * Calling vport change handler while vport is disabled will cleanup
917 	 * the vport resources.
918 	 */
919 	esw_vport_change_handle_locked(vport);
920 	vport->enabled_events = 0;
921 	esw_apply_vport_rx_mode(esw, vport, false, false);
922 	esw_vport_cleanup(esw, vport);
923 	esw->enabled_vports--;
924 
925 done:
926 	mutex_unlock(&esw->state_lock);
927 }
928 
eswitch_vport_event(struct notifier_block * nb,unsigned long type,void * data)929 static int eswitch_vport_event(struct notifier_block *nb,
930 			       unsigned long type, void *data)
931 {
932 	struct mlx5_eswitch *esw = mlx5_nb_cof(nb, struct mlx5_eswitch, nb);
933 	struct mlx5_eqe *eqe = data;
934 	struct mlx5_vport *vport;
935 	u16 vport_num;
936 
937 	vport_num = be16_to_cpu(eqe->data.vport_change.vport_num);
938 	vport = mlx5_eswitch_get_vport(esw, vport_num);
939 	if (!IS_ERR(vport))
940 		queue_work(esw->work_queue, &vport->vport_change_handler);
941 	return NOTIFY_OK;
942 }
943 
944 /**
945  * mlx5_esw_query_functions - Returns raw output about functions state
946  * @dev:	Pointer to device to query
947  *
948  * mlx5_esw_query_functions() allocates and returns functions changed
949  * raw output memory pointer from device on success. Otherwise returns ERR_PTR.
950  * Caller must free the memory using kvfree() when valid pointer is returned.
951  */
mlx5_esw_query_functions(struct mlx5_core_dev * dev)952 const u32 *mlx5_esw_query_functions(struct mlx5_core_dev *dev)
953 {
954 	int outlen = MLX5_ST_SZ_BYTES(query_esw_functions_out);
955 	u32 in[MLX5_ST_SZ_DW(query_esw_functions_in)] = {};
956 	u32 *out;
957 	int err;
958 
959 	out = kvzalloc(outlen, GFP_KERNEL);
960 	if (!out)
961 		return ERR_PTR(-ENOMEM);
962 
963 	MLX5_SET(query_esw_functions_in, in, opcode,
964 		 MLX5_CMD_OP_QUERY_ESW_FUNCTIONS);
965 
966 	err = mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
967 	if (!err)
968 		return out;
969 
970 	kvfree(out);
971 	return ERR_PTR(err);
972 }
973 
mlx5_eswitch_event_handlers_register(struct mlx5_eswitch * esw)974 static void mlx5_eswitch_event_handlers_register(struct mlx5_eswitch *esw)
975 {
976 	MLX5_NB_INIT(&esw->nb, eswitch_vport_event, NIC_VPORT_CHANGE);
977 	mlx5_eq_notifier_register(esw->dev, &esw->nb);
978 
979 	if (esw->mode == MLX5_ESWITCH_OFFLOADS && mlx5_eswitch_is_funcs_handler(esw->dev)) {
980 		MLX5_NB_INIT(&esw->esw_funcs.nb, mlx5_esw_funcs_changed_handler,
981 			     ESW_FUNCTIONS_CHANGED);
982 		mlx5_eq_notifier_register(esw->dev, &esw->esw_funcs.nb);
983 	}
984 }
985 
mlx5_eswitch_event_handlers_unregister(struct mlx5_eswitch * esw)986 static void mlx5_eswitch_event_handlers_unregister(struct mlx5_eswitch *esw)
987 {
988 	if (esw->mode == MLX5_ESWITCH_OFFLOADS && mlx5_eswitch_is_funcs_handler(esw->dev))
989 		mlx5_eq_notifier_unregister(esw->dev, &esw->esw_funcs.nb);
990 
991 	mlx5_eq_notifier_unregister(esw->dev, &esw->nb);
992 
993 	flush_workqueue(esw->work_queue);
994 }
995 
mlx5_eswitch_clear_vf_vports_info(struct mlx5_eswitch * esw)996 static void mlx5_eswitch_clear_vf_vports_info(struct mlx5_eswitch *esw)
997 {
998 	struct mlx5_vport *vport;
999 	unsigned long i;
1000 
1001 	mlx5_esw_for_each_vf_vport(esw, i, vport, esw->esw_funcs.num_vfs) {
1002 		memset(&vport->qos, 0, sizeof(vport->qos));
1003 		memset(&vport->info, 0, sizeof(vport->info));
1004 		vport->info.link_state = MLX5_VPORT_ADMIN_STATE_AUTO;
1005 	}
1006 }
1007 
1008 /* Public E-Switch API */
mlx5_eswitch_load_vport(struct mlx5_eswitch * esw,u16 vport_num,enum mlx5_eswitch_vport_event enabled_events)1009 int mlx5_eswitch_load_vport(struct mlx5_eswitch *esw, u16 vport_num,
1010 			    enum mlx5_eswitch_vport_event enabled_events)
1011 {
1012 	int err;
1013 
1014 	err = mlx5_esw_vport_enable(esw, vport_num, enabled_events);
1015 	if (err)
1016 		return err;
1017 
1018 	err = esw_offloads_load_rep(esw, vport_num);
1019 	if (err)
1020 		goto err_rep;
1021 
1022 	return err;
1023 
1024 err_rep:
1025 	mlx5_esw_vport_disable(esw, vport_num);
1026 	return err;
1027 }
1028 
mlx5_eswitch_unload_vport(struct mlx5_eswitch * esw,u16 vport_num)1029 void mlx5_eswitch_unload_vport(struct mlx5_eswitch *esw, u16 vport_num)
1030 {
1031 	esw_offloads_unload_rep(esw, vport_num);
1032 	mlx5_esw_vport_disable(esw, vport_num);
1033 }
1034 
mlx5_eswitch_unload_vf_vports(struct mlx5_eswitch * esw,u16 num_vfs)1035 void mlx5_eswitch_unload_vf_vports(struct mlx5_eswitch *esw, u16 num_vfs)
1036 {
1037 	struct mlx5_vport *vport;
1038 	unsigned long i;
1039 
1040 	mlx5_esw_for_each_vf_vport(esw, i, vport, num_vfs) {
1041 		if (!vport->enabled)
1042 			continue;
1043 		mlx5_eswitch_unload_vport(esw, vport->vport);
1044 	}
1045 }
1046 
mlx5_eswitch_load_vf_vports(struct mlx5_eswitch * esw,u16 num_vfs,enum mlx5_eswitch_vport_event enabled_events)1047 int mlx5_eswitch_load_vf_vports(struct mlx5_eswitch *esw, u16 num_vfs,
1048 				enum mlx5_eswitch_vport_event enabled_events)
1049 {
1050 	struct mlx5_vport *vport;
1051 	unsigned long i;
1052 	int err;
1053 
1054 	mlx5_esw_for_each_vf_vport(esw, i, vport, num_vfs) {
1055 		err = mlx5_eswitch_load_vport(esw, vport->vport, enabled_events);
1056 		if (err)
1057 			goto vf_err;
1058 	}
1059 
1060 	return 0;
1061 
1062 vf_err:
1063 	mlx5_eswitch_unload_vf_vports(esw, num_vfs);
1064 	return err;
1065 }
1066 
host_pf_enable_hca(struct mlx5_core_dev * dev)1067 static int host_pf_enable_hca(struct mlx5_core_dev *dev)
1068 {
1069 	if (!mlx5_core_is_ecpf(dev))
1070 		return 0;
1071 
1072 	/* Once vport and representor are ready, take out the external host PF
1073 	 * out of initializing state. Enabling HCA clears the iser->initializing
1074 	 * bit and host PF driver loading can progress.
1075 	 */
1076 	return mlx5_cmd_host_pf_enable_hca(dev);
1077 }
1078 
host_pf_disable_hca(struct mlx5_core_dev * dev)1079 static void host_pf_disable_hca(struct mlx5_core_dev *dev)
1080 {
1081 	if (!mlx5_core_is_ecpf(dev))
1082 		return;
1083 
1084 	mlx5_cmd_host_pf_disable_hca(dev);
1085 }
1086 
1087 /* mlx5_eswitch_enable_pf_vf_vports() enables vports of PF, ECPF and VFs
1088  * whichever are present on the eswitch.
1089  */
1090 int
mlx5_eswitch_enable_pf_vf_vports(struct mlx5_eswitch * esw,enum mlx5_eswitch_vport_event enabled_events)1091 mlx5_eswitch_enable_pf_vf_vports(struct mlx5_eswitch *esw,
1092 				 enum mlx5_eswitch_vport_event enabled_events)
1093 {
1094 	int ret;
1095 
1096 	/* Enable PF vport */
1097 	ret = mlx5_eswitch_load_vport(esw, MLX5_VPORT_PF, enabled_events);
1098 	if (ret)
1099 		return ret;
1100 
1101 	/* Enable external host PF HCA */
1102 	ret = host_pf_enable_hca(esw->dev);
1103 	if (ret)
1104 		goto pf_hca_err;
1105 
1106 	/* Enable ECPF vport */
1107 	if (mlx5_ecpf_vport_exists(esw->dev)) {
1108 		ret = mlx5_eswitch_load_vport(esw, MLX5_VPORT_ECPF, enabled_events);
1109 		if (ret)
1110 			goto ecpf_err;
1111 	}
1112 
1113 	/* Enable VF vports */
1114 	ret = mlx5_eswitch_load_vf_vports(esw, esw->esw_funcs.num_vfs,
1115 					  enabled_events);
1116 	if (ret)
1117 		goto vf_err;
1118 	return 0;
1119 
1120 vf_err:
1121 	if (mlx5_ecpf_vport_exists(esw->dev))
1122 		mlx5_eswitch_unload_vport(esw, MLX5_VPORT_ECPF);
1123 ecpf_err:
1124 	host_pf_disable_hca(esw->dev);
1125 pf_hca_err:
1126 	mlx5_eswitch_unload_vport(esw, MLX5_VPORT_PF);
1127 	return ret;
1128 }
1129 
1130 /* mlx5_eswitch_disable_pf_vf_vports() disables vports of PF, ECPF and VFs
1131  * whichever are previously enabled on the eswitch.
1132  */
mlx5_eswitch_disable_pf_vf_vports(struct mlx5_eswitch * esw)1133 void mlx5_eswitch_disable_pf_vf_vports(struct mlx5_eswitch *esw)
1134 {
1135 	mlx5_eswitch_unload_vf_vports(esw, esw->esw_funcs.num_vfs);
1136 
1137 	if (mlx5_ecpf_vport_exists(esw->dev))
1138 		mlx5_eswitch_unload_vport(esw, MLX5_VPORT_ECPF);
1139 
1140 	host_pf_disable_hca(esw->dev);
1141 	mlx5_eswitch_unload_vport(esw, MLX5_VPORT_PF);
1142 }
1143 
mlx5_eswitch_get_devlink_param(struct mlx5_eswitch * esw)1144 static void mlx5_eswitch_get_devlink_param(struct mlx5_eswitch *esw)
1145 {
1146 	struct devlink *devlink = priv_to_devlink(esw->dev);
1147 	union devlink_param_value val;
1148 	int err;
1149 
1150 	err = devlink_param_driverinit_value_get(devlink,
1151 						 MLX5_DEVLINK_PARAM_ID_ESW_LARGE_GROUP_NUM,
1152 						 &val);
1153 	if (!err) {
1154 		esw->params.large_group_num = val.vu32;
1155 	} else {
1156 		esw_warn(esw->dev,
1157 			 "Devlink can't get param fdb_large_groups, uses default (%d).\n",
1158 			 ESW_OFFLOADS_DEFAULT_NUM_GROUPS);
1159 		esw->params.large_group_num = ESW_OFFLOADS_DEFAULT_NUM_GROUPS;
1160 	}
1161 }
1162 
1163 static void
mlx5_eswitch_update_num_of_vfs(struct mlx5_eswitch * esw,int num_vfs)1164 mlx5_eswitch_update_num_of_vfs(struct mlx5_eswitch *esw, int num_vfs)
1165 {
1166 	const u32 *out;
1167 
1168 	WARN_ON_ONCE(esw->mode != MLX5_ESWITCH_NONE);
1169 
1170 	if (num_vfs < 0)
1171 		return;
1172 
1173 	if (!mlx5_core_is_ecpf_esw_manager(esw->dev)) {
1174 		esw->esw_funcs.num_vfs = num_vfs;
1175 		return;
1176 	}
1177 
1178 	out = mlx5_esw_query_functions(esw->dev);
1179 	if (IS_ERR(out))
1180 		return;
1181 
1182 	esw->esw_funcs.num_vfs = MLX5_GET(query_esw_functions_out, out,
1183 					  host_params_context.host_num_of_vfs);
1184 	kvfree(out);
1185 }
1186 
mlx5_esw_mode_change_notify(struct mlx5_eswitch * esw,u16 mode)1187 static void mlx5_esw_mode_change_notify(struct mlx5_eswitch *esw, u16 mode)
1188 {
1189 	struct mlx5_esw_event_info info = {};
1190 
1191 	info.new_mode = mode;
1192 
1193 	blocking_notifier_call_chain(&esw->n_head, 0, &info);
1194 }
1195 
mlx5_esw_acls_ns_init(struct mlx5_eswitch * esw)1196 static int mlx5_esw_acls_ns_init(struct mlx5_eswitch *esw)
1197 {
1198 	struct mlx5_core_dev *dev = esw->dev;
1199 	int total_vports;
1200 	int err;
1201 
1202 	total_vports = mlx5_eswitch_get_total_vports(dev);
1203 
1204 	if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support)) {
1205 		err = mlx5_fs_egress_acls_init(dev, total_vports);
1206 		if (err)
1207 			return err;
1208 	} else {
1209 		esw_warn(dev, "engress ACL is not supported by FW\n");
1210 	}
1211 
1212 	if (MLX5_CAP_ESW_INGRESS_ACL(dev, ft_support)) {
1213 		err = mlx5_fs_ingress_acls_init(dev, total_vports);
1214 		if (err)
1215 			goto err;
1216 	} else {
1217 		esw_warn(dev, "ingress ACL is not supported by FW\n");
1218 	}
1219 	return 0;
1220 
1221 err:
1222 	if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support))
1223 		mlx5_fs_egress_acls_cleanup(dev);
1224 	return err;
1225 }
1226 
mlx5_esw_acls_ns_cleanup(struct mlx5_eswitch * esw)1227 static void mlx5_esw_acls_ns_cleanup(struct mlx5_eswitch *esw)
1228 {
1229 	struct mlx5_core_dev *dev = esw->dev;
1230 
1231 	if (MLX5_CAP_ESW_INGRESS_ACL(dev, ft_support))
1232 		mlx5_fs_ingress_acls_cleanup(dev);
1233 	if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support))
1234 		mlx5_fs_egress_acls_cleanup(dev);
1235 }
1236 
1237 /**
1238  * mlx5_eswitch_enable_locked - Enable eswitch
1239  * @esw:	Pointer to eswitch
1240  * @mode:	Eswitch mode to enable
1241  * @num_vfs:	Enable eswitch for given number of VFs. This is optional.
1242  *		Valid value are 0, > 0 and MLX5_ESWITCH_IGNORE_NUM_VFS.
1243  *		Caller should pass num_vfs > 0 when enabling eswitch for
1244  *		vf vports. Caller should pass num_vfs = 0, when eswitch
1245  *		is enabled without sriov VFs or when caller
1246  *		is unaware of the sriov state of the host PF on ECPF based
1247  *		eswitch. Caller should pass < 0 when num_vfs should be
1248  *		completely ignored. This is typically the case when eswitch
1249  *		is enabled without sriov regardless of PF/ECPF system.
1250  * mlx5_eswitch_enable_locked() Enables eswitch in either legacy or offloads
1251  * mode. If num_vfs >=0 is provided, it setup VF related eswitch vports.
1252  * It returns 0 on success or error code on failure.
1253  */
mlx5_eswitch_enable_locked(struct mlx5_eswitch * esw,int mode,int num_vfs)1254 int mlx5_eswitch_enable_locked(struct mlx5_eswitch *esw, int mode, int num_vfs)
1255 {
1256 	int err;
1257 
1258 	lockdep_assert_held(&esw->mode_lock);
1259 
1260 	if (!MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ft_support)) {
1261 		esw_warn(esw->dev, "FDB is not supported, aborting ...\n");
1262 		return -EOPNOTSUPP;
1263 	}
1264 
1265 	mlx5_eswitch_get_devlink_param(esw);
1266 
1267 	err = mlx5_esw_acls_ns_init(esw);
1268 	if (err)
1269 		return err;
1270 
1271 	mlx5_eswitch_update_num_of_vfs(esw, num_vfs);
1272 
1273 	mlx5_esw_qos_create(esw);
1274 
1275 	esw->mode = mode;
1276 
1277 	if (mode == MLX5_ESWITCH_LEGACY) {
1278 		err = esw_legacy_enable(esw);
1279 	} else {
1280 		mlx5_rescan_drivers(esw->dev);
1281 		err = esw_offloads_enable(esw);
1282 	}
1283 
1284 	if (err)
1285 		goto abort;
1286 
1287 	mlx5_eswitch_event_handlers_register(esw);
1288 
1289 	esw_info(esw->dev, "Enable: mode(%s), nvfs(%d), active vports(%d)\n",
1290 		 mode == MLX5_ESWITCH_LEGACY ? "LEGACY" : "OFFLOADS",
1291 		 esw->esw_funcs.num_vfs, esw->enabled_vports);
1292 
1293 	mlx5_esw_mode_change_notify(esw, mode);
1294 
1295 	return 0;
1296 
1297 abort:
1298 	esw->mode = MLX5_ESWITCH_NONE;
1299 
1300 	if (mode == MLX5_ESWITCH_OFFLOADS)
1301 		mlx5_rescan_drivers(esw->dev);
1302 
1303 	mlx5_esw_qos_destroy(esw);
1304 	mlx5_esw_acls_ns_cleanup(esw);
1305 	return err;
1306 }
1307 
1308 /**
1309  * mlx5_eswitch_enable - Enable eswitch
1310  * @esw:	Pointer to eswitch
1311  * @num_vfs:	Enable eswitch switch for given number of VFs.
1312  *		Caller must pass num_vfs > 0 when enabling eswitch for
1313  *		vf vports.
1314  * mlx5_eswitch_enable() returns 0 on success or error code on failure.
1315  */
mlx5_eswitch_enable(struct mlx5_eswitch * esw,int num_vfs)1316 int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int num_vfs)
1317 {
1318 	bool toggle_lag;
1319 	int ret;
1320 
1321 	if (!mlx5_esw_allowed(esw))
1322 		return 0;
1323 
1324 	toggle_lag = esw->mode == MLX5_ESWITCH_NONE;
1325 
1326 	if (toggle_lag)
1327 		mlx5_lag_disable_change(esw->dev);
1328 
1329 	down_write(&esw->mode_lock);
1330 	if (esw->mode == MLX5_ESWITCH_NONE) {
1331 		ret = mlx5_eswitch_enable_locked(esw, MLX5_ESWITCH_LEGACY, num_vfs);
1332 	} else {
1333 		enum mlx5_eswitch_vport_event vport_events;
1334 
1335 		vport_events = (esw->mode == MLX5_ESWITCH_LEGACY) ?
1336 					MLX5_LEGACY_SRIOV_VPORT_EVENTS : MLX5_VPORT_UC_ADDR_CHANGE;
1337 		ret = mlx5_eswitch_load_vf_vports(esw, num_vfs, vport_events);
1338 		if (!ret)
1339 			esw->esw_funcs.num_vfs = num_vfs;
1340 	}
1341 	up_write(&esw->mode_lock);
1342 
1343 	if (toggle_lag)
1344 		mlx5_lag_enable_change(esw->dev);
1345 
1346 	return ret;
1347 }
1348 
mlx5_eswitch_disable_locked(struct mlx5_eswitch * esw,bool clear_vf)1349 void mlx5_eswitch_disable_locked(struct mlx5_eswitch *esw, bool clear_vf)
1350 {
1351 	int old_mode;
1352 
1353 	lockdep_assert_held_write(&esw->mode_lock);
1354 
1355 	if (esw->mode == MLX5_ESWITCH_NONE)
1356 		return;
1357 
1358 	esw_info(esw->dev, "Disable: mode(%s), nvfs(%d), active vports(%d)\n",
1359 		 esw->mode == MLX5_ESWITCH_LEGACY ? "LEGACY" : "OFFLOADS",
1360 		 esw->esw_funcs.num_vfs, esw->enabled_vports);
1361 
1362 	/* Notify eswitch users that it is exiting from current mode.
1363 	 * So that it can do necessary cleanup before the eswitch is disabled.
1364 	 */
1365 	mlx5_esw_mode_change_notify(esw, MLX5_ESWITCH_NONE);
1366 
1367 	mlx5_eswitch_event_handlers_unregister(esw);
1368 
1369 	if (esw->mode == MLX5_ESWITCH_LEGACY)
1370 		esw_legacy_disable(esw);
1371 	else if (esw->mode == MLX5_ESWITCH_OFFLOADS)
1372 		esw_offloads_disable(esw);
1373 
1374 	old_mode = esw->mode;
1375 	esw->mode = MLX5_ESWITCH_NONE;
1376 
1377 	if (old_mode == MLX5_ESWITCH_OFFLOADS)
1378 		mlx5_rescan_drivers(esw->dev);
1379 
1380 	mlx5_esw_qos_destroy(esw);
1381 	mlx5_esw_acls_ns_cleanup(esw);
1382 
1383 	if (clear_vf)
1384 		mlx5_eswitch_clear_vf_vports_info(esw);
1385 }
1386 
mlx5_eswitch_disable(struct mlx5_eswitch * esw,bool clear_vf)1387 void mlx5_eswitch_disable(struct mlx5_eswitch *esw, bool clear_vf)
1388 {
1389 	if (!mlx5_esw_allowed(esw))
1390 		return;
1391 
1392 	mlx5_lag_disable_change(esw->dev);
1393 	down_write(&esw->mode_lock);
1394 	mlx5_eswitch_disable_locked(esw, clear_vf);
1395 	esw->esw_funcs.num_vfs = 0;
1396 	up_write(&esw->mode_lock);
1397 	mlx5_lag_enable_change(esw->dev);
1398 }
1399 
mlx5_query_hca_cap_host_pf(struct mlx5_core_dev * dev,void * out)1400 static int mlx5_query_hca_cap_host_pf(struct mlx5_core_dev *dev, void *out)
1401 {
1402 	u16 opmod = (MLX5_CAP_GENERAL << 1) | (HCA_CAP_OPMOD_GET_MAX & 0x01);
1403 	u8 in[MLX5_ST_SZ_BYTES(query_hca_cap_in)] = {};
1404 
1405 	MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
1406 	MLX5_SET(query_hca_cap_in, in, op_mod, opmod);
1407 	MLX5_SET(query_hca_cap_in, in, function_id, MLX5_VPORT_PF);
1408 	MLX5_SET(query_hca_cap_in, in, other_function, true);
1409 	return mlx5_cmd_exec_inout(dev, query_hca_cap, in, out);
1410 }
1411 
mlx5_esw_sf_max_hpf_functions(struct mlx5_core_dev * dev,u16 * max_sfs,u16 * sf_base_id)1412 int mlx5_esw_sf_max_hpf_functions(struct mlx5_core_dev *dev, u16 *max_sfs, u16 *sf_base_id)
1413 
1414 {
1415 	int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
1416 	void *query_ctx;
1417 	void *hca_caps;
1418 	int err;
1419 
1420 	if (!mlx5_core_is_ecpf(dev)) {
1421 		*max_sfs = 0;
1422 		return 0;
1423 	}
1424 
1425 	query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
1426 	if (!query_ctx)
1427 		return -ENOMEM;
1428 
1429 	err = mlx5_query_hca_cap_host_pf(dev, query_ctx);
1430 	if (err)
1431 		goto out_free;
1432 
1433 	hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
1434 	*max_sfs = MLX5_GET(cmd_hca_cap, hca_caps, max_num_sf);
1435 	*sf_base_id = MLX5_GET(cmd_hca_cap, hca_caps, sf_base_id);
1436 
1437 out_free:
1438 	kfree(query_ctx);
1439 	return err;
1440 }
1441 
mlx5_esw_vport_alloc(struct mlx5_eswitch * esw,struct mlx5_core_dev * dev,int index,u16 vport_num)1442 static int mlx5_esw_vport_alloc(struct mlx5_eswitch *esw, struct mlx5_core_dev *dev,
1443 				int index, u16 vport_num)
1444 {
1445 	struct mlx5_vport *vport;
1446 	int err;
1447 
1448 	vport = kzalloc(sizeof(*vport), GFP_KERNEL);
1449 	if (!vport)
1450 		return -ENOMEM;
1451 
1452 	vport->dev = esw->dev;
1453 	vport->vport = vport_num;
1454 	vport->index = index;
1455 	vport->info.link_state = MLX5_VPORT_ADMIN_STATE_AUTO;
1456 	INIT_WORK(&vport->vport_change_handler, esw_vport_change_handler);
1457 	err = xa_insert(&esw->vports, vport_num, vport, GFP_KERNEL);
1458 	if (err)
1459 		goto insert_err;
1460 
1461 	esw->total_vports++;
1462 	return 0;
1463 
1464 insert_err:
1465 	kfree(vport);
1466 	return err;
1467 }
1468 
mlx5_esw_vport_free(struct mlx5_eswitch * esw,struct mlx5_vport * vport)1469 static void mlx5_esw_vport_free(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
1470 {
1471 	xa_erase(&esw->vports, vport->vport);
1472 	kfree(vport);
1473 }
1474 
mlx5_esw_vports_cleanup(struct mlx5_eswitch * esw)1475 static void mlx5_esw_vports_cleanup(struct mlx5_eswitch *esw)
1476 {
1477 	struct mlx5_vport *vport;
1478 	unsigned long i;
1479 
1480 	mlx5_esw_for_each_vport(esw, i, vport)
1481 		mlx5_esw_vport_free(esw, vport);
1482 	xa_destroy(&esw->vports);
1483 }
1484 
mlx5_esw_vports_init(struct mlx5_eswitch * esw)1485 static int mlx5_esw_vports_init(struct mlx5_eswitch *esw)
1486 {
1487 	struct mlx5_core_dev *dev = esw->dev;
1488 	u16 max_host_pf_sfs;
1489 	u16 base_sf_num;
1490 	int idx = 0;
1491 	int err;
1492 	int i;
1493 
1494 	xa_init(&esw->vports);
1495 
1496 	err = mlx5_esw_vport_alloc(esw, dev, idx, MLX5_VPORT_PF);
1497 	if (err)
1498 		goto err;
1499 	if (esw->first_host_vport == MLX5_VPORT_PF)
1500 		xa_set_mark(&esw->vports, idx, MLX5_ESW_VPT_HOST_FN);
1501 	idx++;
1502 
1503 	for (i = 0; i < mlx5_core_max_vfs(dev); i++) {
1504 		err = mlx5_esw_vport_alloc(esw, dev, idx, idx);
1505 		if (err)
1506 			goto err;
1507 		xa_set_mark(&esw->vports, idx, MLX5_ESW_VPT_VF);
1508 		xa_set_mark(&esw->vports, idx, MLX5_ESW_VPT_HOST_FN);
1509 		idx++;
1510 	}
1511 	base_sf_num = mlx5_sf_start_function_id(dev);
1512 	for (i = 0; i < mlx5_sf_max_functions(dev); i++) {
1513 		err = mlx5_esw_vport_alloc(esw, dev, idx, base_sf_num + i);
1514 		if (err)
1515 			goto err;
1516 		xa_set_mark(&esw->vports, base_sf_num + i, MLX5_ESW_VPT_SF);
1517 		idx++;
1518 	}
1519 
1520 	err = mlx5_esw_sf_max_hpf_functions(dev, &max_host_pf_sfs, &base_sf_num);
1521 	if (err)
1522 		goto err;
1523 	for (i = 0; i < max_host_pf_sfs; i++) {
1524 		err = mlx5_esw_vport_alloc(esw, dev, idx, base_sf_num + i);
1525 		if (err)
1526 			goto err;
1527 		xa_set_mark(&esw->vports, base_sf_num + i, MLX5_ESW_VPT_SF);
1528 		idx++;
1529 	}
1530 
1531 	if (mlx5_ecpf_vport_exists(dev)) {
1532 		err = mlx5_esw_vport_alloc(esw, dev, idx, MLX5_VPORT_ECPF);
1533 		if (err)
1534 			goto err;
1535 		idx++;
1536 	}
1537 	err = mlx5_esw_vport_alloc(esw, dev, idx, MLX5_VPORT_UPLINK);
1538 	if (err)
1539 		goto err;
1540 	return 0;
1541 
1542 err:
1543 	mlx5_esw_vports_cleanup(esw);
1544 	return err;
1545 }
1546 
mlx5_eswitch_init(struct mlx5_core_dev * dev)1547 int mlx5_eswitch_init(struct mlx5_core_dev *dev)
1548 {
1549 	struct mlx5_eswitch *esw;
1550 	int err;
1551 
1552 	if (!MLX5_VPORT_MANAGER(dev))
1553 		return 0;
1554 
1555 	esw = kzalloc(sizeof(*esw), GFP_KERNEL);
1556 	if (!esw)
1557 		return -ENOMEM;
1558 
1559 	esw->dev = dev;
1560 	esw->manager_vport = mlx5_eswitch_manager_vport(dev);
1561 	esw->first_host_vport = mlx5_eswitch_first_host_vport_num(dev);
1562 
1563 	esw->work_queue = create_singlethread_workqueue("mlx5_esw_wq");
1564 	if (!esw->work_queue) {
1565 		err = -ENOMEM;
1566 		goto abort;
1567 	}
1568 
1569 	err = mlx5_esw_vports_init(esw);
1570 	if (err)
1571 		goto abort;
1572 
1573 	err = esw_offloads_init_reps(esw);
1574 	if (err)
1575 		goto reps_err;
1576 
1577 	mutex_init(&esw->offloads.encap_tbl_lock);
1578 	hash_init(esw->offloads.encap_tbl);
1579 	mutex_init(&esw->offloads.decap_tbl_lock);
1580 	hash_init(esw->offloads.decap_tbl);
1581 	mlx5e_mod_hdr_tbl_init(&esw->offloads.mod_hdr);
1582 	atomic64_set(&esw->offloads.num_flows, 0);
1583 	ida_init(&esw->offloads.vport_metadata_ida);
1584 	xa_init_flags(&esw->offloads.vhca_map, XA_FLAGS_ALLOC);
1585 	mutex_init(&esw->state_lock);
1586 	lockdep_register_key(&esw->mode_lock_key);
1587 	init_rwsem(&esw->mode_lock);
1588 	lockdep_set_class(&esw->mode_lock, &esw->mode_lock_key);
1589 
1590 	esw->enabled_vports = 0;
1591 	esw->mode = MLX5_ESWITCH_NONE;
1592 	esw->offloads.inline_mode = MLX5_INLINE_MODE_NONE;
1593 	if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, reformat) &&
1594 	    MLX5_CAP_ESW_FLOWTABLE_FDB(dev, decap))
1595 		esw->offloads.encap = DEVLINK_ESWITCH_ENCAP_MODE_BASIC;
1596 	else
1597 		esw->offloads.encap = DEVLINK_ESWITCH_ENCAP_MODE_NONE;
1598 
1599 	dev->priv.eswitch = esw;
1600 	BLOCKING_INIT_NOTIFIER_HEAD(&esw->n_head);
1601 
1602 	esw_info(dev,
1603 		 "Total vports %d, per vport: max uc(%d) max mc(%d)\n",
1604 		 esw->total_vports,
1605 		 MLX5_MAX_UC_PER_VPORT(dev),
1606 		 MLX5_MAX_MC_PER_VPORT(dev));
1607 	return 0;
1608 
1609 reps_err:
1610 	mlx5_esw_vports_cleanup(esw);
1611 abort:
1612 	if (esw->work_queue)
1613 		destroy_workqueue(esw->work_queue);
1614 	kfree(esw);
1615 	return err;
1616 }
1617 
mlx5_eswitch_cleanup(struct mlx5_eswitch * esw)1618 void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw)
1619 {
1620 	if (!esw || !MLX5_VPORT_MANAGER(esw->dev))
1621 		return;
1622 
1623 	esw_info(esw->dev, "cleanup\n");
1624 
1625 	esw->dev->priv.eswitch = NULL;
1626 	destroy_workqueue(esw->work_queue);
1627 	lockdep_unregister_key(&esw->mode_lock_key);
1628 	mutex_destroy(&esw->state_lock);
1629 	WARN_ON(!xa_empty(&esw->offloads.vhca_map));
1630 	xa_destroy(&esw->offloads.vhca_map);
1631 	ida_destroy(&esw->offloads.vport_metadata_ida);
1632 	mlx5e_mod_hdr_tbl_destroy(&esw->offloads.mod_hdr);
1633 	mutex_destroy(&esw->offloads.encap_tbl_lock);
1634 	mutex_destroy(&esw->offloads.decap_tbl_lock);
1635 	esw_offloads_cleanup_reps(esw);
1636 	mlx5_esw_vports_cleanup(esw);
1637 	kfree(esw);
1638 }
1639 
1640 /* Vport Administration */
1641 static int
mlx5_esw_set_vport_mac_locked(struct mlx5_eswitch * esw,struct mlx5_vport * evport,const u8 * mac)1642 mlx5_esw_set_vport_mac_locked(struct mlx5_eswitch *esw,
1643 			      struct mlx5_vport *evport, const u8 *mac)
1644 {
1645 	u16 vport_num = evport->vport;
1646 	u64 node_guid;
1647 	int err = 0;
1648 
1649 	if (is_multicast_ether_addr(mac))
1650 		return -EINVAL;
1651 
1652 	if (evport->info.spoofchk && !is_valid_ether_addr(mac))
1653 		mlx5_core_warn(esw->dev,
1654 			       "Set invalid MAC while spoofchk is on, vport(%d)\n",
1655 			       vport_num);
1656 
1657 	err = mlx5_modify_nic_vport_mac_address(esw->dev, vport_num, mac);
1658 	if (err) {
1659 		mlx5_core_warn(esw->dev,
1660 			       "Failed to mlx5_modify_nic_vport_mac vport(%d) err=(%d)\n",
1661 			       vport_num, err);
1662 		return err;
1663 	}
1664 
1665 	node_guid_gen_from_mac(&node_guid, mac);
1666 	err = mlx5_modify_nic_vport_node_guid(esw->dev, vport_num, node_guid);
1667 	if (err)
1668 		mlx5_core_warn(esw->dev,
1669 			       "Failed to set vport %d node guid, err = %d. RDMA_CM will not function properly for this VF.\n",
1670 			       vport_num, err);
1671 
1672 	ether_addr_copy(evport->info.mac, mac);
1673 	evport->info.node_guid = node_guid;
1674 	if (evport->enabled && esw->mode == MLX5_ESWITCH_LEGACY)
1675 		err = esw_acl_ingress_lgcy_setup(esw, evport);
1676 
1677 	return err;
1678 }
1679 
mlx5_eswitch_set_vport_mac(struct mlx5_eswitch * esw,u16 vport,const u8 * mac)1680 int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
1681 			       u16 vport, const u8 *mac)
1682 {
1683 	struct mlx5_vport *evport = mlx5_eswitch_get_vport(esw, vport);
1684 	int err = 0;
1685 
1686 	if (IS_ERR(evport))
1687 		return PTR_ERR(evport);
1688 
1689 	mutex_lock(&esw->state_lock);
1690 	err = mlx5_esw_set_vport_mac_locked(esw, evport, mac);
1691 	mutex_unlock(&esw->state_lock);
1692 	return err;
1693 }
1694 
mlx5_esw_check_port_type(struct mlx5_eswitch * esw,u16 vport_num,xa_mark_t mark)1695 static bool mlx5_esw_check_port_type(struct mlx5_eswitch *esw, u16 vport_num, xa_mark_t mark)
1696 {
1697 	struct mlx5_vport *vport;
1698 
1699 	vport = mlx5_eswitch_get_vport(esw, vport_num);
1700 	if (IS_ERR(vport))
1701 		return false;
1702 
1703 	return xa_get_mark(&esw->vports, vport_num, mark);
1704 }
1705 
mlx5_eswitch_is_vf_vport(struct mlx5_eswitch * esw,u16 vport_num)1706 bool mlx5_eswitch_is_vf_vport(struct mlx5_eswitch *esw, u16 vport_num)
1707 {
1708 	return mlx5_esw_check_port_type(esw, vport_num, MLX5_ESW_VPT_VF);
1709 }
1710 
mlx5_esw_is_sf_vport(struct mlx5_eswitch * esw,u16 vport_num)1711 bool mlx5_esw_is_sf_vport(struct mlx5_eswitch *esw, u16 vport_num)
1712 {
1713 	return mlx5_esw_check_port_type(esw, vport_num, MLX5_ESW_VPT_SF);
1714 }
1715 
1716 static bool
is_port_function_supported(struct mlx5_eswitch * esw,u16 vport_num)1717 is_port_function_supported(struct mlx5_eswitch *esw, u16 vport_num)
1718 {
1719 	return vport_num == MLX5_VPORT_PF ||
1720 	       mlx5_eswitch_is_vf_vport(esw, vport_num) ||
1721 	       mlx5_esw_is_sf_vport(esw, vport_num);
1722 }
1723 
mlx5_devlink_port_function_hw_addr_get(struct devlink_port * port,u8 * hw_addr,int * hw_addr_len,struct netlink_ext_ack * extack)1724 int mlx5_devlink_port_function_hw_addr_get(struct devlink_port *port,
1725 					   u8 *hw_addr, int *hw_addr_len,
1726 					   struct netlink_ext_ack *extack)
1727 {
1728 	struct mlx5_eswitch *esw;
1729 	struct mlx5_vport *vport;
1730 	int err = -EOPNOTSUPP;
1731 	u16 vport_num;
1732 
1733 	esw = mlx5_devlink_eswitch_get(port->devlink);
1734 	if (IS_ERR(esw))
1735 		return PTR_ERR(esw);
1736 
1737 	vport_num = mlx5_esw_devlink_port_index_to_vport_num(port->index);
1738 	if (!is_port_function_supported(esw, vport_num))
1739 		return -EOPNOTSUPP;
1740 
1741 	vport = mlx5_eswitch_get_vport(esw, vport_num);
1742 	if (IS_ERR(vport)) {
1743 		NL_SET_ERR_MSG_MOD(extack, "Invalid port");
1744 		return PTR_ERR(vport);
1745 	}
1746 
1747 	mutex_lock(&esw->state_lock);
1748 	if (vport->enabled) {
1749 		ether_addr_copy(hw_addr, vport->info.mac);
1750 		*hw_addr_len = ETH_ALEN;
1751 		err = 0;
1752 	}
1753 	mutex_unlock(&esw->state_lock);
1754 	return err;
1755 }
1756 
mlx5_devlink_port_function_hw_addr_set(struct devlink_port * port,const u8 * hw_addr,int hw_addr_len,struct netlink_ext_ack * extack)1757 int mlx5_devlink_port_function_hw_addr_set(struct devlink_port *port,
1758 					   const u8 *hw_addr, int hw_addr_len,
1759 					   struct netlink_ext_ack *extack)
1760 {
1761 	struct mlx5_eswitch *esw;
1762 	struct mlx5_vport *vport;
1763 	int err = -EOPNOTSUPP;
1764 	u16 vport_num;
1765 
1766 	esw = mlx5_devlink_eswitch_get(port->devlink);
1767 	if (IS_ERR(esw)) {
1768 		NL_SET_ERR_MSG_MOD(extack, "Eswitch doesn't support set hw_addr");
1769 		return PTR_ERR(esw);
1770 	}
1771 
1772 	vport_num = mlx5_esw_devlink_port_index_to_vport_num(port->index);
1773 	if (!is_port_function_supported(esw, vport_num)) {
1774 		NL_SET_ERR_MSG_MOD(extack, "Port doesn't support set hw_addr");
1775 		return -EINVAL;
1776 	}
1777 	vport = mlx5_eswitch_get_vport(esw, vport_num);
1778 	if (IS_ERR(vport)) {
1779 		NL_SET_ERR_MSG_MOD(extack, "Invalid port");
1780 		return PTR_ERR(vport);
1781 	}
1782 
1783 	mutex_lock(&esw->state_lock);
1784 	if (vport->enabled)
1785 		err = mlx5_esw_set_vport_mac_locked(esw, vport, hw_addr);
1786 	else
1787 		NL_SET_ERR_MSG_MOD(extack, "Eswitch vport is disabled");
1788 	mutex_unlock(&esw->state_lock);
1789 	return err;
1790 }
1791 
mlx5_eswitch_set_vport_state(struct mlx5_eswitch * esw,u16 vport,int link_state)1792 int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
1793 				 u16 vport, int link_state)
1794 {
1795 	struct mlx5_vport *evport = mlx5_eswitch_get_vport(esw, vport);
1796 	int opmod = MLX5_VPORT_STATE_OP_MOD_ESW_VPORT;
1797 	int other_vport = 1;
1798 	int err = 0;
1799 
1800 	if (!mlx5_esw_allowed(esw))
1801 		return -EPERM;
1802 	if (IS_ERR(evport))
1803 		return PTR_ERR(evport);
1804 
1805 	if (vport == MLX5_VPORT_UPLINK) {
1806 		opmod = MLX5_VPORT_STATE_OP_MOD_UPLINK;
1807 		other_vport = 0;
1808 		vport = 0;
1809 	}
1810 	mutex_lock(&esw->state_lock);
1811 	if (esw->mode != MLX5_ESWITCH_LEGACY) {
1812 		err = -EOPNOTSUPP;
1813 		goto unlock;
1814 	}
1815 
1816 	err = mlx5_modify_vport_admin_state(esw->dev, opmod, vport, other_vport, link_state);
1817 	if (err) {
1818 		mlx5_core_warn(esw->dev, "Failed to set vport %d link state, opmod = %d, err = %d",
1819 			       vport, opmod, err);
1820 		goto unlock;
1821 	}
1822 
1823 	evport->info.link_state = link_state;
1824 
1825 unlock:
1826 	mutex_unlock(&esw->state_lock);
1827 	return err;
1828 }
1829 
mlx5_eswitch_get_vport_config(struct mlx5_eswitch * esw,u16 vport,struct ifla_vf_info * ivi)1830 int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
1831 				  u16 vport, struct ifla_vf_info *ivi)
1832 {
1833 	struct mlx5_vport *evport = mlx5_eswitch_get_vport(esw, vport);
1834 
1835 	if (IS_ERR(evport))
1836 		return PTR_ERR(evport);
1837 
1838 	memset(ivi, 0, sizeof(*ivi));
1839 	ivi->vf = vport - 1;
1840 
1841 	mutex_lock(&esw->state_lock);
1842 	ether_addr_copy(ivi->mac, evport->info.mac);
1843 	ivi->linkstate = evport->info.link_state;
1844 	ivi->vlan = evport->info.vlan;
1845 	ivi->qos = evport->info.qos;
1846 	ivi->spoofchk = evport->info.spoofchk;
1847 	ivi->trusted = evport->info.trusted;
1848 	ivi->min_tx_rate = evport->qos.min_rate;
1849 	ivi->max_tx_rate = evport->qos.max_rate;
1850 	mutex_unlock(&esw->state_lock);
1851 
1852 	return 0;
1853 }
1854 
__mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch * esw,u16 vport,u16 vlan,u8 qos,u8 set_flags)1855 int __mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
1856 				  u16 vport, u16 vlan, u8 qos, u8 set_flags)
1857 {
1858 	struct mlx5_vport *evport = mlx5_eswitch_get_vport(esw, vport);
1859 	bool vst_mode_steering = esw_vst_mode_is_steering(esw);
1860 	int err = 0;
1861 
1862 	if (IS_ERR(evport))
1863 		return PTR_ERR(evport);
1864 	if (vlan > 4095 || qos > 7)
1865 		return -EINVAL;
1866 
1867 	if (esw->mode == MLX5_ESWITCH_OFFLOADS || !vst_mode_steering) {
1868 		err = modify_esw_vport_cvlan(esw->dev, vport, vlan, qos, set_flags);
1869 		if (err)
1870 			return err;
1871 	}
1872 
1873 	evport->info.vlan = vlan;
1874 	evport->info.qos = qos;
1875 	if (evport->enabled && esw->mode == MLX5_ESWITCH_LEGACY) {
1876 		err = esw_acl_ingress_lgcy_setup(esw, evport);
1877 		if (err)
1878 			return err;
1879 		err = esw_acl_egress_lgcy_setup(esw, evport);
1880 	}
1881 
1882 	return err;
1883 }
1884 
mlx5_eswitch_get_vport_stats(struct mlx5_eswitch * esw,u16 vport_num,struct ifla_vf_stats * vf_stats)1885 int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,
1886 				 u16 vport_num,
1887 				 struct ifla_vf_stats *vf_stats)
1888 {
1889 	struct mlx5_vport *vport = mlx5_eswitch_get_vport(esw, vport_num);
1890 	int outlen = MLX5_ST_SZ_BYTES(query_vport_counter_out);
1891 	u32 in[MLX5_ST_SZ_DW(query_vport_counter_in)] = {};
1892 	struct mlx5_vport_drop_stats stats = {};
1893 	int err = 0;
1894 	u32 *out;
1895 
1896 	if (IS_ERR(vport))
1897 		return PTR_ERR(vport);
1898 
1899 	out = kvzalloc(outlen, GFP_KERNEL);
1900 	if (!out)
1901 		return -ENOMEM;
1902 
1903 	MLX5_SET(query_vport_counter_in, in, opcode,
1904 		 MLX5_CMD_OP_QUERY_VPORT_COUNTER);
1905 	MLX5_SET(query_vport_counter_in, in, op_mod, 0);
1906 	MLX5_SET(query_vport_counter_in, in, vport_number, vport->vport);
1907 	MLX5_SET(query_vport_counter_in, in, other_vport, 1);
1908 
1909 	err = mlx5_cmd_exec_inout(esw->dev, query_vport_counter, in, out);
1910 	if (err)
1911 		goto free_out;
1912 
1913 	#define MLX5_GET_CTR(p, x) \
1914 		MLX5_GET64(query_vport_counter_out, p, x)
1915 
1916 	memset(vf_stats, 0, sizeof(*vf_stats));
1917 	vf_stats->rx_packets =
1918 		MLX5_GET_CTR(out, received_eth_unicast.packets) +
1919 		MLX5_GET_CTR(out, received_ib_unicast.packets) +
1920 		MLX5_GET_CTR(out, received_eth_multicast.packets) +
1921 		MLX5_GET_CTR(out, received_ib_multicast.packets) +
1922 		MLX5_GET_CTR(out, received_eth_broadcast.packets);
1923 
1924 	vf_stats->rx_bytes =
1925 		MLX5_GET_CTR(out, received_eth_unicast.octets) +
1926 		MLX5_GET_CTR(out, received_ib_unicast.octets) +
1927 		MLX5_GET_CTR(out, received_eth_multicast.octets) +
1928 		MLX5_GET_CTR(out, received_ib_multicast.octets) +
1929 		MLX5_GET_CTR(out, received_eth_broadcast.octets);
1930 
1931 	vf_stats->tx_packets =
1932 		MLX5_GET_CTR(out, transmitted_eth_unicast.packets) +
1933 		MLX5_GET_CTR(out, transmitted_ib_unicast.packets) +
1934 		MLX5_GET_CTR(out, transmitted_eth_multicast.packets) +
1935 		MLX5_GET_CTR(out, transmitted_ib_multicast.packets) +
1936 		MLX5_GET_CTR(out, transmitted_eth_broadcast.packets);
1937 
1938 	vf_stats->tx_bytes =
1939 		MLX5_GET_CTR(out, transmitted_eth_unicast.octets) +
1940 		MLX5_GET_CTR(out, transmitted_ib_unicast.octets) +
1941 		MLX5_GET_CTR(out, transmitted_eth_multicast.octets) +
1942 		MLX5_GET_CTR(out, transmitted_ib_multicast.octets) +
1943 		MLX5_GET_CTR(out, transmitted_eth_broadcast.octets);
1944 
1945 	vf_stats->multicast =
1946 		MLX5_GET_CTR(out, received_eth_multicast.packets) +
1947 		MLX5_GET_CTR(out, received_ib_multicast.packets);
1948 
1949 	vf_stats->broadcast =
1950 		MLX5_GET_CTR(out, received_eth_broadcast.packets);
1951 
1952 	err = mlx5_esw_query_vport_drop_stats(esw->dev, vport, &stats);
1953 	if (err)
1954 		goto free_out;
1955 	vf_stats->rx_dropped = stats.rx_dropped;
1956 	vf_stats->tx_dropped = stats.tx_dropped;
1957 
1958 free_out:
1959 	kvfree(out);
1960 	return err;
1961 }
1962 
mlx5_eswitch_mode(const struct mlx5_core_dev * dev)1963 u8 mlx5_eswitch_mode(const struct mlx5_core_dev *dev)
1964 {
1965 	struct mlx5_eswitch *esw = dev->priv.eswitch;
1966 
1967 	return mlx5_esw_allowed(esw) ? esw->mode : MLX5_ESWITCH_NONE;
1968 }
1969 EXPORT_SYMBOL_GPL(mlx5_eswitch_mode);
1970 
1971 enum devlink_eswitch_encap_mode
mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev * dev)1972 mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev)
1973 {
1974 	struct mlx5_eswitch *esw;
1975 
1976 	esw = dev->priv.eswitch;
1977 	return (mlx5_eswitch_mode(dev) == MLX5_ESWITCH_OFFLOADS)  ? esw->offloads.encap :
1978 		DEVLINK_ESWITCH_ENCAP_MODE_NONE;
1979 }
1980 EXPORT_SYMBOL(mlx5_eswitch_get_encap_mode);
1981 
mlx5_esw_lag_prereq(struct mlx5_core_dev * dev0,struct mlx5_core_dev * dev1)1982 bool mlx5_esw_lag_prereq(struct mlx5_core_dev *dev0, struct mlx5_core_dev *dev1)
1983 {
1984 	if ((dev0->priv.eswitch->mode == MLX5_ESWITCH_NONE &&
1985 	     dev1->priv.eswitch->mode == MLX5_ESWITCH_NONE) ||
1986 	    (dev0->priv.eswitch->mode == MLX5_ESWITCH_OFFLOADS &&
1987 	     dev1->priv.eswitch->mode == MLX5_ESWITCH_OFFLOADS))
1988 		return true;
1989 
1990 	return false;
1991 }
1992 
mlx5_esw_multipath_prereq(struct mlx5_core_dev * dev0,struct mlx5_core_dev * dev1)1993 bool mlx5_esw_multipath_prereq(struct mlx5_core_dev *dev0,
1994 			       struct mlx5_core_dev *dev1)
1995 {
1996 	return (dev0->priv.eswitch->mode == MLX5_ESWITCH_OFFLOADS &&
1997 		dev1->priv.eswitch->mode == MLX5_ESWITCH_OFFLOADS);
1998 }
1999 
mlx5_esw_event_notifier_register(struct mlx5_eswitch * esw,struct notifier_block * nb)2000 int mlx5_esw_event_notifier_register(struct mlx5_eswitch *esw, struct notifier_block *nb)
2001 {
2002 	return blocking_notifier_chain_register(&esw->n_head, nb);
2003 }
2004 
mlx5_esw_event_notifier_unregister(struct mlx5_eswitch * esw,struct notifier_block * nb)2005 void mlx5_esw_event_notifier_unregister(struct mlx5_eswitch *esw, struct notifier_block *nb)
2006 {
2007 	blocking_notifier_chain_unregister(&esw->n_head, nb);
2008 }
2009 
2010 /**
2011  * mlx5_esw_hold() - Try to take a read lock on esw mode lock.
2012  * @mdev: mlx5 core device.
2013  *
2014  * Should be called by esw resources callers.
2015  *
2016  * Return: true on success or false.
2017  */
mlx5_esw_hold(struct mlx5_core_dev * mdev)2018 bool mlx5_esw_hold(struct mlx5_core_dev *mdev)
2019 {
2020 	struct mlx5_eswitch *esw = mdev->priv.eswitch;
2021 
2022 	/* e.g. VF doesn't have eswitch so nothing to do */
2023 	if (!mlx5_esw_allowed(esw))
2024 		return true;
2025 
2026 	if (down_read_trylock(&esw->mode_lock) != 0)
2027 		return true;
2028 
2029 	return false;
2030 }
2031 
2032 /**
2033  * mlx5_esw_release() - Release a read lock on esw mode lock.
2034  * @mdev: mlx5 core device.
2035  */
mlx5_esw_release(struct mlx5_core_dev * mdev)2036 void mlx5_esw_release(struct mlx5_core_dev *mdev)
2037 {
2038 	struct mlx5_eswitch *esw = mdev->priv.eswitch;
2039 
2040 	if (mlx5_esw_allowed(esw))
2041 		up_read(&esw->mode_lock);
2042 }
2043 
2044 /**
2045  * mlx5_esw_get() - Increase esw user count.
2046  * @mdev: mlx5 core device.
2047  */
mlx5_esw_get(struct mlx5_core_dev * mdev)2048 void mlx5_esw_get(struct mlx5_core_dev *mdev)
2049 {
2050 	struct mlx5_eswitch *esw = mdev->priv.eswitch;
2051 
2052 	if (mlx5_esw_allowed(esw))
2053 		atomic64_inc(&esw->user_count);
2054 }
2055 
2056 /**
2057  * mlx5_esw_put() - Decrease esw user count.
2058  * @mdev: mlx5 core device.
2059  */
mlx5_esw_put(struct mlx5_core_dev * mdev)2060 void mlx5_esw_put(struct mlx5_core_dev *mdev)
2061 {
2062 	struct mlx5_eswitch *esw = mdev->priv.eswitch;
2063 
2064 	if (mlx5_esw_allowed(esw))
2065 		atomic64_dec_if_positive(&esw->user_count);
2066 }
2067 
2068 /**
2069  * mlx5_esw_try_lock() - Take a write lock on esw mode lock.
2070  * @esw: eswitch device.
2071  *
2072  * Should be called by esw mode change routine.
2073  *
2074  * Return:
2075  * * 0       - esw mode if successfully locked and refcount is 0.
2076  * * -EBUSY  - refcount is not 0.
2077  * * -EINVAL - In the middle of switching mode or lock is already held.
2078  */
mlx5_esw_try_lock(struct mlx5_eswitch * esw)2079 int mlx5_esw_try_lock(struct mlx5_eswitch *esw)
2080 {
2081 	if (down_write_trylock(&esw->mode_lock) == 0)
2082 		return -EINVAL;
2083 
2084 	if (atomic64_read(&esw->user_count) > 0) {
2085 		up_write(&esw->mode_lock);
2086 		return -EBUSY;
2087 	}
2088 
2089 	return esw->mode;
2090 }
2091 
2092 /**
2093  * mlx5_esw_unlock() - Release write lock on esw mode lock
2094  * @esw: eswitch device.
2095  */
mlx5_esw_unlock(struct mlx5_eswitch * esw)2096 void mlx5_esw_unlock(struct mlx5_eswitch *esw)
2097 {
2098 	if (!mlx5_esw_allowed(esw))
2099 		return;
2100 	up_write(&esw->mode_lock);
2101 }
2102 
2103 /**
2104  * mlx5_esw_lock() - Take write lock on esw mode lock
2105  * @esw: eswitch device.
2106  */
mlx5_esw_lock(struct mlx5_eswitch * esw)2107 void mlx5_esw_lock(struct mlx5_eswitch *esw)
2108 {
2109 	if (!mlx5_esw_allowed(esw))
2110 		return;
2111 	down_write(&esw->mode_lock);
2112 }
2113 
2114 /**
2115  * mlx5_eswitch_get_total_vports - Get total vports of the eswitch
2116  *
2117  * @dev: Pointer to core device
2118  *
2119  * mlx5_eswitch_get_total_vports returns total number of eswitch vports.
2120  */
mlx5_eswitch_get_total_vports(const struct mlx5_core_dev * dev)2121 u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev)
2122 {
2123 	struct mlx5_eswitch *esw;
2124 
2125 	esw = dev->priv.eswitch;
2126 	return mlx5_esw_allowed(esw) ? esw->total_vports : 0;
2127 }
2128 EXPORT_SYMBOL_GPL(mlx5_eswitch_get_total_vports);
2129 
2130 /**
2131  * mlx5_eswitch_get_core_dev - Get the mdev device
2132  * @esw : eswitch device.
2133  *
2134  * Return the mellanox core device which manages the eswitch.
2135  */
mlx5_eswitch_get_core_dev(struct mlx5_eswitch * esw)2136 struct mlx5_core_dev *mlx5_eswitch_get_core_dev(struct mlx5_eswitch *esw)
2137 {
2138 	return mlx5_esw_allowed(esw) ? esw->dev : NULL;
2139 }
2140 EXPORT_SYMBOL(mlx5_eswitch_get_core_dev);
2141