xref: /openbmc/linux/drivers/infiniband/hw/mlx4/main.c (revision 7d22b1cb)
1 /*
2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses.  You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  *     Redistribution and use in source and binary forms, with or
12  *     without modification, are permitted provided that the following
13  *     conditions are met:
14  *
15  *      - Redistributions of source code must retain the above
16  *        copyright notice, this list of conditions and the following
17  *        disclaimer.
18  *
19  *      - Redistributions in binary form must reproduce the above
20  *        copyright notice, this list of conditions and the following
21  *        disclaimer in the documentation and/or other materials
22  *        provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  */
33 
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/errno.h>
38 #include <linux/netdevice.h>
39 #include <linux/inetdevice.h>
40 #include <linux/rtnetlink.h>
41 #include <linux/if_vlan.h>
42 #include <linux/sched/mm.h>
43 #include <linux/sched/task.h>
44 
45 #include <net/ipv6.h>
46 #include <net/addrconf.h>
47 #include <net/devlink.h>
48 
49 #include <rdma/ib_smi.h>
50 #include <rdma/ib_user_verbs.h>
51 #include <rdma/ib_addr.h>
52 #include <rdma/ib_cache.h>
53 
54 #include <net/bonding.h>
55 
56 #include <linux/mlx4/driver.h>
57 #include <linux/mlx4/cmd.h>
58 #include <linux/mlx4/qp.h>
59 
60 #include "mlx4_ib.h"
61 #include <rdma/mlx4-abi.h>
62 
63 #define DRV_NAME	MLX4_IB_DRV_NAME
64 #define DRV_VERSION	"4.0-0"
65 
66 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
67 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
68 #define MLX4_IB_CARD_REV_A0   0xA0
69 
70 MODULE_AUTHOR("Roland Dreier");
71 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
72 MODULE_LICENSE("Dual BSD/GPL");
73 
74 int mlx4_ib_sm_guid_assign = 0;
75 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
76 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
77 
78 static const char mlx4_ib_version[] =
79 	DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
80 	DRV_VERSION "\n";
81 
82 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
83 static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device,
84 						    u32 port_num);
85 static int mlx4_ib_event(struct notifier_block *this, unsigned long event,
86 			 void *param);
87 
88 static struct workqueue_struct *wq;
89 
check_flow_steering_support(struct mlx4_dev * dev)90 static int check_flow_steering_support(struct mlx4_dev *dev)
91 {
92 	int eth_num_ports = 0;
93 	int ib_num_ports = 0;
94 
95 	int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
96 
97 	if (dmfs) {
98 		int i;
99 		mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
100 			eth_num_ports++;
101 		mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
102 			ib_num_ports++;
103 		dmfs &= (!ib_num_ports ||
104 			 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
105 			(!eth_num_ports ||
106 			 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
107 		if (ib_num_ports && mlx4_is_mfunc(dev)) {
108 			pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
109 			dmfs = 0;
110 		}
111 	}
112 	return dmfs;
113 }
114 
num_ib_ports(struct mlx4_dev * dev)115 static int num_ib_ports(struct mlx4_dev *dev)
116 {
117 	int ib_ports = 0;
118 	int i;
119 
120 	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
121 		ib_ports++;
122 
123 	return ib_ports;
124 }
125 
mlx4_ib_get_netdev(struct ib_device * device,u32 port_num)126 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device,
127 					     u32 port_num)
128 {
129 	struct mlx4_ib_dev *ibdev = to_mdev(device);
130 	struct net_device *dev, *ret = NULL;
131 
132 	rcu_read_lock();
133 	for_each_netdev_rcu(&init_net, dev) {
134 		if (dev->dev.parent != ibdev->ib_dev.dev.parent ||
135 		    dev->dev_port + 1 != port_num)
136 			continue;
137 
138 		if (mlx4_is_bonded(ibdev->dev)) {
139 			struct net_device *upper;
140 
141 			upper = netdev_master_upper_dev_get_rcu(dev);
142 			if (upper) {
143 				struct net_device *active;
144 
145 				active = bond_option_active_slave_get_rcu(netdev_priv(upper));
146 				if (active)
147 					dev = active;
148 			}
149 		}
150 
151 		dev_hold(dev);
152 		ret = dev;
153 		break;
154 	}
155 
156 	rcu_read_unlock();
157 	return ret;
158 }
159 
mlx4_ib_update_gids_v1(struct gid_entry * gids,struct mlx4_ib_dev * ibdev,u32 port_num)160 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
161 				  struct mlx4_ib_dev *ibdev,
162 				  u32 port_num)
163 {
164 	struct mlx4_cmd_mailbox *mailbox;
165 	int err;
166 	struct mlx4_dev *dev = ibdev->dev;
167 	int i;
168 	union ib_gid *gid_tbl;
169 
170 	mailbox = mlx4_alloc_cmd_mailbox(dev);
171 	if (IS_ERR(mailbox))
172 		return -ENOMEM;
173 
174 	gid_tbl = mailbox->buf;
175 
176 	for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
177 		memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
178 
179 	err = mlx4_cmd(dev, mailbox->dma,
180 		       MLX4_SET_PORT_GID_TABLE << 8 | port_num,
181 		       1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
182 		       MLX4_CMD_WRAPPED);
183 	if (mlx4_is_bonded(dev))
184 		err += mlx4_cmd(dev, mailbox->dma,
185 				MLX4_SET_PORT_GID_TABLE << 8 | 2,
186 				1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
187 				MLX4_CMD_WRAPPED);
188 
189 	mlx4_free_cmd_mailbox(dev, mailbox);
190 	return err;
191 }
192 
mlx4_ib_update_gids_v1_v2(struct gid_entry * gids,struct mlx4_ib_dev * ibdev,u32 port_num)193 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
194 				     struct mlx4_ib_dev *ibdev,
195 				     u32 port_num)
196 {
197 	struct mlx4_cmd_mailbox *mailbox;
198 	int err;
199 	struct mlx4_dev *dev = ibdev->dev;
200 	int i;
201 	struct {
202 		union ib_gid	gid;
203 		__be32		rsrvd1[2];
204 		__be16		rsrvd2;
205 		u8		type;
206 		u8		version;
207 		__be32		rsrvd3;
208 	} *gid_tbl;
209 
210 	mailbox = mlx4_alloc_cmd_mailbox(dev);
211 	if (IS_ERR(mailbox))
212 		return -ENOMEM;
213 
214 	gid_tbl = mailbox->buf;
215 	for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
216 		memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
217 		if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
218 			gid_tbl[i].version = 2;
219 			if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
220 				gid_tbl[i].type = 1;
221 		}
222 	}
223 
224 	err = mlx4_cmd(dev, mailbox->dma,
225 		       MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
226 		       1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
227 		       MLX4_CMD_WRAPPED);
228 	if (mlx4_is_bonded(dev))
229 		err += mlx4_cmd(dev, mailbox->dma,
230 				MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
231 				1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
232 				MLX4_CMD_WRAPPED);
233 
234 	mlx4_free_cmd_mailbox(dev, mailbox);
235 	return err;
236 }
237 
mlx4_ib_update_gids(struct gid_entry * gids,struct mlx4_ib_dev * ibdev,u32 port_num)238 static int mlx4_ib_update_gids(struct gid_entry *gids,
239 			       struct mlx4_ib_dev *ibdev,
240 			       u32 port_num)
241 {
242 	if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
243 		return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
244 
245 	return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
246 }
247 
free_gid_entry(struct gid_entry * entry)248 static void free_gid_entry(struct gid_entry *entry)
249 {
250 	memset(&entry->gid, 0, sizeof(entry->gid));
251 	kfree(entry->ctx);
252 	entry->ctx = NULL;
253 }
254 
mlx4_ib_add_gid(const struct ib_gid_attr * attr,void ** context)255 static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context)
256 {
257 	struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
258 	struct mlx4_ib_iboe *iboe = &ibdev->iboe;
259 	struct mlx4_port_gid_table   *port_gid_table;
260 	int free = -1, found = -1;
261 	int ret = 0;
262 	int hw_update = 0;
263 	int i;
264 	struct gid_entry *gids;
265 	u16 vlan_id = 0xffff;
266 	u8 mac[ETH_ALEN];
267 
268 	if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
269 		return -EINVAL;
270 
271 	if (attr->port_num > MLX4_MAX_PORTS)
272 		return -EINVAL;
273 
274 	if (!context)
275 		return -EINVAL;
276 
277 	ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]);
278 	if (ret)
279 		return ret;
280 	port_gid_table = &iboe->gids[attr->port_num - 1];
281 	spin_lock_bh(&iboe->lock);
282 	for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
283 		if (!memcmp(&port_gid_table->gids[i].gid,
284 			    &attr->gid, sizeof(attr->gid)) &&
285 		    port_gid_table->gids[i].gid_type == attr->gid_type &&
286 		    port_gid_table->gids[i].vlan_id == vlan_id)  {
287 			found = i;
288 			break;
289 		}
290 		if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid))
291 			free = i; /* HW has space */
292 	}
293 
294 	if (found < 0) {
295 		if (free < 0) {
296 			ret = -ENOSPC;
297 		} else {
298 			port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
299 			if (!port_gid_table->gids[free].ctx) {
300 				ret = -ENOMEM;
301 			} else {
302 				*context = port_gid_table->gids[free].ctx;
303 				port_gid_table->gids[free].gid = attr->gid;
304 				port_gid_table->gids[free].gid_type = attr->gid_type;
305 				port_gid_table->gids[free].vlan_id = vlan_id;
306 				port_gid_table->gids[free].ctx->real_index = free;
307 				port_gid_table->gids[free].ctx->refcount = 1;
308 				hw_update = 1;
309 			}
310 		}
311 	} else {
312 		struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
313 		*context = ctx;
314 		ctx->refcount++;
315 	}
316 	if (!ret && hw_update) {
317 		gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
318 				     GFP_ATOMIC);
319 		if (!gids) {
320 			ret = -ENOMEM;
321 			*context = NULL;
322 			free_gid_entry(&port_gid_table->gids[free]);
323 		} else {
324 			for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
325 				memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
326 				gids[i].gid_type = port_gid_table->gids[i].gid_type;
327 			}
328 		}
329 	}
330 	spin_unlock_bh(&iboe->lock);
331 
332 	if (!ret && hw_update) {
333 		ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
334 		if (ret) {
335 			spin_lock_bh(&iboe->lock);
336 			*context = NULL;
337 			free_gid_entry(&port_gid_table->gids[free]);
338 			spin_unlock_bh(&iboe->lock);
339 		}
340 		kfree(gids);
341 	}
342 
343 	return ret;
344 }
345 
mlx4_ib_del_gid(const struct ib_gid_attr * attr,void ** context)346 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context)
347 {
348 	struct gid_cache_context *ctx = *context;
349 	struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
350 	struct mlx4_ib_iboe *iboe = &ibdev->iboe;
351 	struct mlx4_port_gid_table   *port_gid_table;
352 	int ret = 0;
353 	int hw_update = 0;
354 	struct gid_entry *gids;
355 
356 	if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
357 		return -EINVAL;
358 
359 	if (attr->port_num > MLX4_MAX_PORTS)
360 		return -EINVAL;
361 
362 	port_gid_table = &iboe->gids[attr->port_num - 1];
363 	spin_lock_bh(&iboe->lock);
364 	if (ctx) {
365 		ctx->refcount--;
366 		if (!ctx->refcount) {
367 			unsigned int real_index = ctx->real_index;
368 
369 			free_gid_entry(&port_gid_table->gids[real_index]);
370 			hw_update = 1;
371 		}
372 	}
373 	if (!ret && hw_update) {
374 		int i;
375 
376 		gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
377 				     GFP_ATOMIC);
378 		if (!gids) {
379 			ret = -ENOMEM;
380 		} else {
381 			for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
382 				memcpy(&gids[i].gid,
383 				       &port_gid_table->gids[i].gid,
384 				       sizeof(union ib_gid));
385 				gids[i].gid_type =
386 				    port_gid_table->gids[i].gid_type;
387 			}
388 		}
389 	}
390 	spin_unlock_bh(&iboe->lock);
391 
392 	if (!ret && hw_update) {
393 		ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
394 		kfree(gids);
395 	}
396 	return ret;
397 }
398 
mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev * ibdev,const struct ib_gid_attr * attr)399 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
400 				    const struct ib_gid_attr *attr)
401 {
402 	struct mlx4_ib_iboe *iboe = &ibdev->iboe;
403 	struct gid_cache_context *ctx = NULL;
404 	struct mlx4_port_gid_table   *port_gid_table;
405 	int real_index = -EINVAL;
406 	int i;
407 	unsigned long flags;
408 	u32 port_num = attr->port_num;
409 
410 	if (port_num > MLX4_MAX_PORTS)
411 		return -EINVAL;
412 
413 	if (mlx4_is_bonded(ibdev->dev))
414 		port_num = 1;
415 
416 	if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
417 		return attr->index;
418 
419 	spin_lock_irqsave(&iboe->lock, flags);
420 	port_gid_table = &iboe->gids[port_num - 1];
421 
422 	for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
423 		if (!memcmp(&port_gid_table->gids[i].gid,
424 			    &attr->gid, sizeof(attr->gid)) &&
425 		    attr->gid_type == port_gid_table->gids[i].gid_type) {
426 			ctx = port_gid_table->gids[i].ctx;
427 			break;
428 		}
429 	if (ctx)
430 		real_index = ctx->real_index;
431 	spin_unlock_irqrestore(&iboe->lock, flags);
432 	return real_index;
433 }
434 
mlx4_ib_query_device(struct ib_device * ibdev,struct ib_device_attr * props,struct ib_udata * uhw)435 static int mlx4_ib_query_device(struct ib_device *ibdev,
436 				struct ib_device_attr *props,
437 				struct ib_udata *uhw)
438 {
439 	struct mlx4_ib_dev *dev = to_mdev(ibdev);
440 	struct ib_smp *in_mad;
441 	struct ib_smp *out_mad;
442 	int err;
443 	int have_ib_ports;
444 	struct mlx4_uverbs_ex_query_device cmd;
445 	struct mlx4_uverbs_ex_query_device_resp resp = {};
446 	struct mlx4_clock_params clock_params;
447 
448 	if (uhw->inlen) {
449 		if (uhw->inlen < sizeof(cmd))
450 			return -EINVAL;
451 
452 		err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
453 		if (err)
454 			return err;
455 
456 		if (cmd.comp_mask)
457 			return -EINVAL;
458 
459 		if (cmd.reserved)
460 			return -EINVAL;
461 	}
462 
463 	resp.response_length = offsetof(typeof(resp), response_length) +
464 		sizeof(resp.response_length);
465 	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
466 	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
467 	err = -ENOMEM;
468 	if (!in_mad || !out_mad)
469 		goto out;
470 
471 	ib_init_query_mad(in_mad);
472 	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
473 
474 	err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
475 			   1, NULL, NULL, in_mad, out_mad);
476 	if (err)
477 		goto out;
478 
479 	memset(props, 0, sizeof *props);
480 
481 	have_ib_ports = num_ib_ports(dev->dev);
482 
483 	props->fw_ver = dev->dev->caps.fw_ver;
484 	props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
485 		IB_DEVICE_PORT_ACTIVE_EVENT		|
486 		IB_DEVICE_SYS_IMAGE_GUID		|
487 		IB_DEVICE_RC_RNR_NAK_GEN;
488 	props->kernel_cap_flags = IBK_BLOCK_MULTICAST_LOOPBACK;
489 	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
490 		props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
491 	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
492 		props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
493 	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
494 		props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
495 	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
496 		props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
497 	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
498 		props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
499 	if (dev->dev->caps.max_gso_sz &&
500 	    (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
501 	    (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
502 		props->kernel_cap_flags |= IBK_UD_TSO;
503 	if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
504 		props->kernel_cap_flags |= IBK_LOCAL_DMA_LKEY;
505 	if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
506 	    (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
507 	    (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
508 		props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
509 	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
510 		props->device_cap_flags |= IB_DEVICE_XRC;
511 	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
512 		props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
513 	if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
514 		if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
515 			props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
516 		else
517 			props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
518 	}
519 	if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
520 		props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
521 
522 	props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
523 
524 	props->vendor_id	   = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
525 		0xffffff;
526 	props->vendor_part_id	   = dev->dev->persist->pdev->device;
527 	props->hw_ver		   = be32_to_cpup((__be32 *) (out_mad->data + 32));
528 	memcpy(&props->sys_image_guid, out_mad->data +	4, 8);
529 
530 	props->max_mr_size	   = ~0ull;
531 	props->page_size_cap	   = dev->dev->caps.page_size_cap;
532 	props->max_qp		   = dev->dev->quotas.qp;
533 	props->max_qp_wr	   = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
534 	props->max_send_sge =
535 		min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
536 	props->max_recv_sge =
537 		min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
538 	props->max_sge_rd = MLX4_MAX_SGE_RD;
539 	props->max_cq		   = dev->dev->quotas.cq;
540 	props->max_cqe		   = dev->dev->caps.max_cqes;
541 	props->max_mr		   = dev->dev->quotas.mpt;
542 	props->max_pd		   = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
543 	props->max_qp_rd_atom	   = dev->dev->caps.max_qp_dest_rdma;
544 	props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
545 	props->max_res_rd_atom	   = props->max_qp_rd_atom * props->max_qp;
546 	props->max_srq		   = dev->dev->quotas.srq;
547 	props->max_srq_wr	   = dev->dev->caps.max_srq_wqes - 1;
548 	props->max_srq_sge	   = dev->dev->caps.max_srq_sge;
549 	props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
550 	props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
551 	props->atomic_cap	   = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
552 		IB_ATOMIC_HCA : IB_ATOMIC_NONE;
553 	props->masked_atomic_cap   = props->atomic_cap;
554 	props->max_pkeys	   = dev->dev->caps.pkey_table_len[1];
555 	props->max_mcast_grp	   = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
556 	props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
557 	props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
558 					   props->max_mcast_grp;
559 	props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
560 	props->timestamp_mask = 0xFFFFFFFFFFFFULL;
561 	props->max_ah = INT_MAX;
562 
563 	if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
564 	    mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) {
565 		if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) {
566 			props->rss_caps.max_rwq_indirection_tables =
567 				props->max_qp;
568 			props->rss_caps.max_rwq_indirection_table_size =
569 				dev->dev->caps.max_rss_tbl_sz;
570 			props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
571 			props->max_wq_type_rq = props->max_qp;
572 		}
573 
574 		if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
575 			props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
576 	}
577 
578 	props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
579 	props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
580 
581 	if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
582 		resp.response_length += sizeof(resp.hca_core_clock_offset);
583 		if (!mlx4_get_internal_clock_params(dev->dev, &clock_params)) {
584 			resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET;
585 			resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
586 		}
587 	}
588 
589 	if (uhw->outlen >= resp.response_length +
590 	    sizeof(resp.max_inl_recv_sz)) {
591 		resp.response_length += sizeof(resp.max_inl_recv_sz);
592 		resp.max_inl_recv_sz  = dev->dev->caps.max_rq_sg *
593 			sizeof(struct mlx4_wqe_data_seg);
594 	}
595 
596 	if (offsetofend(typeof(resp), rss_caps) <= uhw->outlen) {
597 		if (props->rss_caps.supported_qpts) {
598 			resp.rss_caps.rx_hash_function =
599 				MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
600 
601 			resp.rss_caps.rx_hash_fields_mask =
602 				MLX4_IB_RX_HASH_SRC_IPV4 |
603 				MLX4_IB_RX_HASH_DST_IPV4 |
604 				MLX4_IB_RX_HASH_SRC_IPV6 |
605 				MLX4_IB_RX_HASH_DST_IPV6 |
606 				MLX4_IB_RX_HASH_SRC_PORT_TCP |
607 				MLX4_IB_RX_HASH_DST_PORT_TCP |
608 				MLX4_IB_RX_HASH_SRC_PORT_UDP |
609 				MLX4_IB_RX_HASH_DST_PORT_UDP;
610 
611 			if (dev->dev->caps.tunnel_offload_mode ==
612 			    MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
613 				resp.rss_caps.rx_hash_fields_mask |=
614 					MLX4_IB_RX_HASH_INNER;
615 		}
616 		resp.response_length = offsetof(typeof(resp), rss_caps) +
617 				       sizeof(resp.rss_caps);
618 	}
619 
620 	if (offsetofend(typeof(resp), tso_caps) <= uhw->outlen) {
621 		if (dev->dev->caps.max_gso_sz &&
622 		    ((mlx4_ib_port_link_layer(ibdev, 1) ==
623 		    IB_LINK_LAYER_ETHERNET) ||
624 		    (mlx4_ib_port_link_layer(ibdev, 2) ==
625 		    IB_LINK_LAYER_ETHERNET))) {
626 			resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz;
627 			resp.tso_caps.supported_qpts |=
628 				1 << IB_QPT_RAW_PACKET;
629 		}
630 		resp.response_length = offsetof(typeof(resp), tso_caps) +
631 				       sizeof(resp.tso_caps);
632 	}
633 
634 	if (uhw->outlen) {
635 		err = ib_copy_to_udata(uhw, &resp, resp.response_length);
636 		if (err)
637 			goto out;
638 	}
639 out:
640 	kfree(in_mad);
641 	kfree(out_mad);
642 
643 	return err;
644 }
645 
646 static enum rdma_link_layer
mlx4_ib_port_link_layer(struct ib_device * device,u32 port_num)647 mlx4_ib_port_link_layer(struct ib_device *device, u32 port_num)
648 {
649 	struct mlx4_dev *dev = to_mdev(device)->dev;
650 
651 	return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
652 		IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
653 }
654 
ib_link_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props,int netw_view)655 static int ib_link_query_port(struct ib_device *ibdev, u32 port,
656 			      struct ib_port_attr *props, int netw_view)
657 {
658 	struct ib_smp *in_mad;
659 	struct ib_smp *out_mad;
660 	int ext_active_speed;
661 	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
662 	int err = -ENOMEM;
663 
664 	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
665 	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
666 	if (!in_mad || !out_mad)
667 		goto out;
668 
669 	ib_init_query_mad(in_mad);
670 	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
671 	in_mad->attr_mod = cpu_to_be32(port);
672 
673 	if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
674 		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
675 
676 	err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
677 				in_mad, out_mad);
678 	if (err)
679 		goto out;
680 
681 
682 	props->lid		= be16_to_cpup((__be16 *) (out_mad->data + 16));
683 	props->lmc		= out_mad->data[34] & 0x7;
684 	props->sm_lid		= be16_to_cpup((__be16 *) (out_mad->data + 18));
685 	props->sm_sl		= out_mad->data[36] & 0xf;
686 	props->state		= out_mad->data[32] & 0xf;
687 	props->phys_state	= out_mad->data[33] >> 4;
688 	props->port_cap_flags	= be32_to_cpup((__be32 *) (out_mad->data + 20));
689 	if (netw_view)
690 		props->gid_tbl_len = out_mad->data[50];
691 	else
692 		props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
693 	props->max_msg_sz	= to_mdev(ibdev)->dev->caps.max_msg_sz;
694 	props->pkey_tbl_len	= to_mdev(ibdev)->dev->caps.pkey_table_len[port];
695 	props->bad_pkey_cntr	= be16_to_cpup((__be16 *) (out_mad->data + 46));
696 	props->qkey_viol_cntr	= be16_to_cpup((__be16 *) (out_mad->data + 48));
697 	props->active_width	= out_mad->data[31] & 0xf;
698 	props->active_speed	= out_mad->data[35] >> 4;
699 	props->max_mtu		= out_mad->data[41] & 0xf;
700 	props->active_mtu	= out_mad->data[36] >> 4;
701 	props->subnet_timeout	= out_mad->data[51] & 0x1f;
702 	props->max_vl_num	= out_mad->data[37] >> 4;
703 	props->init_type_reply	= out_mad->data[41] >> 4;
704 
705 	/* Check if extended speeds (EDR/FDR/...) are supported */
706 	if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
707 		ext_active_speed = out_mad->data[62] >> 4;
708 
709 		switch (ext_active_speed) {
710 		case 1:
711 			props->active_speed = IB_SPEED_FDR;
712 			break;
713 		case 2:
714 			props->active_speed = IB_SPEED_EDR;
715 			break;
716 		}
717 	}
718 
719 	/* If reported active speed is QDR, check if is FDR-10 */
720 	if (props->active_speed == IB_SPEED_QDR) {
721 		ib_init_query_mad(in_mad);
722 		in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
723 		in_mad->attr_mod = cpu_to_be32(port);
724 
725 		err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
726 				   NULL, NULL, in_mad, out_mad);
727 		if (err)
728 			goto out;
729 
730 		/* Checking LinkSpeedActive for FDR-10 */
731 		if (out_mad->data[15] & 0x1)
732 			props->active_speed = IB_SPEED_FDR10;
733 	}
734 
735 	/* Avoid wrong speed value returned by FW if the IB link is down. */
736 	if (props->state == IB_PORT_DOWN)
737 		 props->active_speed = IB_SPEED_SDR;
738 
739 out:
740 	kfree(in_mad);
741 	kfree(out_mad);
742 	return err;
743 }
744 
state_to_phys_state(enum ib_port_state state)745 static u8 state_to_phys_state(enum ib_port_state state)
746 {
747 	return state == IB_PORT_ACTIVE ?
748 		IB_PORT_PHYS_STATE_LINK_UP : IB_PORT_PHYS_STATE_DISABLED;
749 }
750 
eth_link_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props)751 static int eth_link_query_port(struct ib_device *ibdev, u32 port,
752 			       struct ib_port_attr *props)
753 {
754 
755 	struct mlx4_ib_dev *mdev = to_mdev(ibdev);
756 	struct mlx4_ib_iboe *iboe = &mdev->iboe;
757 	struct net_device *ndev;
758 	enum ib_mtu tmp;
759 	struct mlx4_cmd_mailbox *mailbox;
760 	int err = 0;
761 	int is_bonded = mlx4_is_bonded(mdev->dev);
762 
763 	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
764 	if (IS_ERR(mailbox))
765 		return PTR_ERR(mailbox);
766 
767 	err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
768 			   MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
769 			   MLX4_CMD_WRAPPED);
770 	if (err)
771 		goto out;
772 
773 	props->active_width	=  (((u8 *)mailbox->buf)[5] == 0x40) ||
774 				   (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
775 					   IB_WIDTH_4X : IB_WIDTH_1X;
776 	props->active_speed	=  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
777 					   IB_SPEED_FDR : IB_SPEED_QDR;
778 	props->port_cap_flags	= IB_PORT_CM_SUP;
779 	props->ip_gids = true;
780 	props->gid_tbl_len	= mdev->dev->caps.gid_table_len[port];
781 	props->max_msg_sz	= mdev->dev->caps.max_msg_sz;
782 	if (mdev->dev->caps.pkey_table_len[port])
783 		props->pkey_tbl_len = 1;
784 	props->max_mtu		= IB_MTU_4096;
785 	props->max_vl_num	= 2;
786 	props->state		= IB_PORT_DOWN;
787 	props->phys_state	= state_to_phys_state(props->state);
788 	props->active_mtu	= IB_MTU_256;
789 	spin_lock_bh(&iboe->lock);
790 	ndev = iboe->netdevs[port - 1];
791 	if (ndev && is_bonded) {
792 		rcu_read_lock(); /* required to get upper dev */
793 		ndev = netdev_master_upper_dev_get_rcu(ndev);
794 		rcu_read_unlock();
795 	}
796 	if (!ndev)
797 		goto out_unlock;
798 
799 	tmp = iboe_get_mtu(ndev->mtu);
800 	props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
801 
802 	props->state		= (netif_running(ndev) && netif_carrier_ok(ndev)) ?
803 					IB_PORT_ACTIVE : IB_PORT_DOWN;
804 	props->phys_state	= state_to_phys_state(props->state);
805 out_unlock:
806 	spin_unlock_bh(&iboe->lock);
807 out:
808 	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
809 	return err;
810 }
811 
__mlx4_ib_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props,int netw_view)812 int __mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
813 			 struct ib_port_attr *props, int netw_view)
814 {
815 	int err;
816 
817 	/* props being zeroed by the caller, avoid zeroing it here */
818 
819 	err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
820 		ib_link_query_port(ibdev, port, props, netw_view) :
821 				eth_link_query_port(ibdev, port, props);
822 
823 	return err;
824 }
825 
mlx4_ib_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props)826 static int mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
827 			      struct ib_port_attr *props)
828 {
829 	/* returns host view */
830 	return __mlx4_ib_query_port(ibdev, port, props, 0);
831 }
832 
__mlx4_ib_query_gid(struct ib_device * ibdev,u32 port,int index,union ib_gid * gid,int netw_view)833 int __mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
834 			union ib_gid *gid, int netw_view)
835 {
836 	struct ib_smp *in_mad;
837 	struct ib_smp *out_mad;
838 	int err = -ENOMEM;
839 	struct mlx4_ib_dev *dev = to_mdev(ibdev);
840 	int clear = 0;
841 	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
842 
843 	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
844 	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
845 	if (!in_mad || !out_mad)
846 		goto out;
847 
848 	ib_init_query_mad(in_mad);
849 	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
850 	in_mad->attr_mod = cpu_to_be32(port);
851 
852 	if (mlx4_is_mfunc(dev->dev) && netw_view)
853 		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
854 
855 	err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
856 	if (err)
857 		goto out;
858 
859 	memcpy(gid->raw, out_mad->data + 8, 8);
860 
861 	if (mlx4_is_mfunc(dev->dev) && !netw_view) {
862 		if (index) {
863 			/* For any index > 0, return the null guid */
864 			err = 0;
865 			clear = 1;
866 			goto out;
867 		}
868 	}
869 
870 	ib_init_query_mad(in_mad);
871 	in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
872 	in_mad->attr_mod = cpu_to_be32(index / 8);
873 
874 	err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
875 			   NULL, NULL, in_mad, out_mad);
876 	if (err)
877 		goto out;
878 
879 	memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
880 
881 out:
882 	if (clear)
883 		memset(gid->raw + 8, 0, 8);
884 	kfree(in_mad);
885 	kfree(out_mad);
886 	return err;
887 }
888 
mlx4_ib_query_gid(struct ib_device * ibdev,u32 port,int index,union ib_gid * gid)889 static int mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
890 			     union ib_gid *gid)
891 {
892 	if (rdma_protocol_ib(ibdev, port))
893 		return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
894 	return 0;
895 }
896 
mlx4_ib_query_sl2vl(struct ib_device * ibdev,u32 port,u64 * sl2vl_tbl)897 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u32 port,
898 			       u64 *sl2vl_tbl)
899 {
900 	union sl2vl_tbl_to_u64 sl2vl64;
901 	struct ib_smp *in_mad;
902 	struct ib_smp *out_mad;
903 	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
904 	int err = -ENOMEM;
905 	int jj;
906 
907 	if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
908 		*sl2vl_tbl = 0;
909 		return 0;
910 	}
911 
912 	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
913 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
914 	if (!in_mad || !out_mad)
915 		goto out;
916 
917 	ib_init_query_mad(in_mad);
918 	in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
919 	in_mad->attr_mod = 0;
920 
921 	if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
922 		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
923 
924 	err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
925 			   in_mad, out_mad);
926 	if (err)
927 		goto out;
928 
929 	for (jj = 0; jj < 8; jj++)
930 		sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
931 	*sl2vl_tbl = sl2vl64.sl64;
932 
933 out:
934 	kfree(in_mad);
935 	kfree(out_mad);
936 	return err;
937 }
938 
mlx4_init_sl2vl_tbl(struct mlx4_ib_dev * mdev)939 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
940 {
941 	u64 sl2vl;
942 	int i;
943 	int err;
944 
945 	for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
946 		if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
947 			continue;
948 		err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
949 		if (err) {
950 			pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
951 			       i, err);
952 			sl2vl = 0;
953 		}
954 		atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
955 	}
956 }
957 
__mlx4_ib_query_pkey(struct ib_device * ibdev,u32 port,u16 index,u16 * pkey,int netw_view)958 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
959 			 u16 *pkey, int netw_view)
960 {
961 	struct ib_smp *in_mad;
962 	struct ib_smp *out_mad;
963 	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
964 	int err = -ENOMEM;
965 
966 	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
967 	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
968 	if (!in_mad || !out_mad)
969 		goto out;
970 
971 	ib_init_query_mad(in_mad);
972 	in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
973 	in_mad->attr_mod = cpu_to_be32(index / 32);
974 
975 	if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
976 		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
977 
978 	err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
979 			   in_mad, out_mad);
980 	if (err)
981 		goto out;
982 
983 	*pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
984 
985 out:
986 	kfree(in_mad);
987 	kfree(out_mad);
988 	return err;
989 }
990 
mlx4_ib_query_pkey(struct ib_device * ibdev,u32 port,u16 index,u16 * pkey)991 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
992 			      u16 *pkey)
993 {
994 	return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
995 }
996 
mlx4_ib_modify_device(struct ib_device * ibdev,int mask,struct ib_device_modify * props)997 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
998 				 struct ib_device_modify *props)
999 {
1000 	struct mlx4_cmd_mailbox *mailbox;
1001 	unsigned long flags;
1002 
1003 	if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
1004 		return -EOPNOTSUPP;
1005 
1006 	if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1007 		return 0;
1008 
1009 	if (mlx4_is_slave(to_mdev(ibdev)->dev))
1010 		return -EOPNOTSUPP;
1011 
1012 	spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
1013 	memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1014 	spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
1015 
1016 	/*
1017 	 * If possible, pass node desc to FW, so it can generate
1018 	 * a 144 trap.  If cmd fails, just ignore.
1019 	 */
1020 	mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
1021 	if (IS_ERR(mailbox))
1022 		return 0;
1023 
1024 	memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1025 	mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
1026 		 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1027 
1028 	mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
1029 
1030 	return 0;
1031 }
1032 
mlx4_ib_SET_PORT(struct mlx4_ib_dev * dev,u32 port,int reset_qkey_viols,u32 cap_mask)1033 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u32 port,
1034 			    int reset_qkey_viols, u32 cap_mask)
1035 {
1036 	struct mlx4_cmd_mailbox *mailbox;
1037 	int err;
1038 
1039 	mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
1040 	if (IS_ERR(mailbox))
1041 		return PTR_ERR(mailbox);
1042 
1043 	if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1044 		*(u8 *) mailbox->buf	     = !!reset_qkey_viols << 6;
1045 		((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
1046 	} else {
1047 		((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
1048 		((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
1049 	}
1050 
1051 	err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
1052 		       MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1053 		       MLX4_CMD_WRAPPED);
1054 
1055 	mlx4_free_cmd_mailbox(dev->dev, mailbox);
1056 	return err;
1057 }
1058 
mlx4_ib_modify_port(struct ib_device * ibdev,u32 port,int mask,struct ib_port_modify * props)1059 static int mlx4_ib_modify_port(struct ib_device *ibdev, u32 port, int mask,
1060 			       struct ib_port_modify *props)
1061 {
1062 	struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1063 	u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1064 	struct ib_port_attr attr;
1065 	u32 cap_mask;
1066 	int err;
1067 
1068 	/* return OK if this is RoCE. CM calls ib_modify_port() regardless
1069 	 * of whether port link layer is ETH or IB. For ETH ports, qkey
1070 	 * violations and port capabilities are not meaningful.
1071 	 */
1072 	if (is_eth)
1073 		return 0;
1074 
1075 	mutex_lock(&mdev->cap_mask_mutex);
1076 
1077 	err = ib_query_port(ibdev, port, &attr);
1078 	if (err)
1079 		goto out;
1080 
1081 	cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1082 		~props->clr_port_cap_mask;
1083 
1084 	err = mlx4_ib_SET_PORT(mdev, port,
1085 			       !!(mask & IB_PORT_RESET_QKEY_CNTR),
1086 			       cap_mask);
1087 
1088 out:
1089 	mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1090 	return err;
1091 }
1092 
mlx4_ib_alloc_ucontext(struct ib_ucontext * uctx,struct ib_udata * udata)1093 static int mlx4_ib_alloc_ucontext(struct ib_ucontext *uctx,
1094 				  struct ib_udata *udata)
1095 {
1096 	struct ib_device *ibdev = uctx->device;
1097 	struct mlx4_ib_dev *dev = to_mdev(ibdev);
1098 	struct mlx4_ib_ucontext *context = to_mucontext(uctx);
1099 	struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1100 	struct mlx4_ib_alloc_ucontext_resp resp;
1101 	int err;
1102 
1103 	if (!dev->ib_active)
1104 		return -EAGAIN;
1105 
1106 	if (ibdev->ops.uverbs_abi_ver ==
1107 	    MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1108 		resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1109 		resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1110 		resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1111 	} else {
1112 		resp.dev_caps	      = dev->dev->caps.userspace_caps;
1113 		resp.qp_tab_size      = dev->dev->caps.num_qps;
1114 		resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1115 		resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1116 		resp.cqe_size	      = dev->dev->caps.cqe_size;
1117 	}
1118 
1119 	err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1120 	if (err)
1121 		return err;
1122 
1123 	INIT_LIST_HEAD(&context->db_page_list);
1124 	mutex_init(&context->db_page_mutex);
1125 
1126 	INIT_LIST_HEAD(&context->wqn_ranges_list);
1127 	mutex_init(&context->wqn_ranges_mutex);
1128 
1129 	if (ibdev->ops.uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1130 		err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1131 	else
1132 		err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1133 
1134 	if (err) {
1135 		mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1136 		return -EFAULT;
1137 	}
1138 
1139 	return err;
1140 }
1141 
mlx4_ib_dealloc_ucontext(struct ib_ucontext * ibcontext)1142 static void mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1143 {
1144 	struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1145 
1146 	mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1147 }
1148 
mlx4_ib_disassociate_ucontext(struct ib_ucontext * ibcontext)1149 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1150 {
1151 }
1152 
mlx4_ib_mmap(struct ib_ucontext * context,struct vm_area_struct * vma)1153 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1154 {
1155 	struct mlx4_ib_dev *dev = to_mdev(context->device);
1156 
1157 	switch (vma->vm_pgoff) {
1158 	case 0:
1159 		return rdma_user_mmap_io(context, vma,
1160 					 to_mucontext(context)->uar.pfn,
1161 					 PAGE_SIZE,
1162 					 pgprot_noncached(vma->vm_page_prot),
1163 					 NULL);
1164 
1165 	case 1:
1166 		if (dev->dev->caps.bf_reg_size == 0)
1167 			return -EINVAL;
1168 		return rdma_user_mmap_io(
1169 			context, vma,
1170 			to_mucontext(context)->uar.pfn +
1171 				dev->dev->caps.num_uars,
1172 			PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot),
1173 			NULL);
1174 
1175 	case 3: {
1176 		struct mlx4_clock_params params;
1177 		int ret;
1178 
1179 		ret = mlx4_get_internal_clock_params(dev->dev, &params);
1180 		if (ret)
1181 			return ret;
1182 
1183 		return rdma_user_mmap_io(
1184 			context, vma,
1185 			(pci_resource_start(dev->dev->persist->pdev,
1186 					    params.bar) +
1187 			 params.offset) >>
1188 				PAGE_SHIFT,
1189 			PAGE_SIZE, pgprot_noncached(vma->vm_page_prot),
1190 			NULL);
1191 	}
1192 
1193 	default:
1194 		return -EINVAL;
1195 	}
1196 }
1197 
mlx4_ib_alloc_pd(struct ib_pd * ibpd,struct ib_udata * udata)1198 static int mlx4_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
1199 {
1200 	struct mlx4_ib_pd *pd = to_mpd(ibpd);
1201 	struct ib_device *ibdev = ibpd->device;
1202 	int err;
1203 
1204 	err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1205 	if (err)
1206 		return err;
1207 
1208 	if (udata && ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) {
1209 		mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1210 		return -EFAULT;
1211 	}
1212 	return 0;
1213 }
1214 
mlx4_ib_dealloc_pd(struct ib_pd * pd,struct ib_udata * udata)1215 static int mlx4_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
1216 {
1217 	mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1218 	return 0;
1219 }
1220 
mlx4_ib_alloc_xrcd(struct ib_xrcd * ibxrcd,struct ib_udata * udata)1221 static int mlx4_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
1222 {
1223 	struct mlx4_ib_dev *dev = to_mdev(ibxrcd->device);
1224 	struct mlx4_ib_xrcd *xrcd = to_mxrcd(ibxrcd);
1225 	struct ib_cq_init_attr cq_attr = {};
1226 	int err;
1227 
1228 	if (!(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1229 		return -EOPNOTSUPP;
1230 
1231 	err = mlx4_xrcd_alloc(dev->dev, &xrcd->xrcdn);
1232 	if (err)
1233 		return err;
1234 
1235 	xrcd->pd = ib_alloc_pd(ibxrcd->device, 0);
1236 	if (IS_ERR(xrcd->pd)) {
1237 		err = PTR_ERR(xrcd->pd);
1238 		goto err2;
1239 	}
1240 
1241 	cq_attr.cqe = 1;
1242 	xrcd->cq = ib_create_cq(ibxrcd->device, NULL, NULL, xrcd, &cq_attr);
1243 	if (IS_ERR(xrcd->cq)) {
1244 		err = PTR_ERR(xrcd->cq);
1245 		goto err3;
1246 	}
1247 
1248 	return 0;
1249 
1250 err3:
1251 	ib_dealloc_pd(xrcd->pd);
1252 err2:
1253 	mlx4_xrcd_free(dev->dev, xrcd->xrcdn);
1254 	return err;
1255 }
1256 
mlx4_ib_dealloc_xrcd(struct ib_xrcd * xrcd,struct ib_udata * udata)1257 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
1258 {
1259 	ib_destroy_cq(to_mxrcd(xrcd)->cq);
1260 	ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1261 	mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1262 	return 0;
1263 }
1264 
add_gid_entry(struct ib_qp * ibqp,union ib_gid * gid)1265 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1266 {
1267 	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1268 	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1269 	struct mlx4_ib_gid_entry *ge;
1270 
1271 	ge = kzalloc(sizeof *ge, GFP_KERNEL);
1272 	if (!ge)
1273 		return -ENOMEM;
1274 
1275 	ge->gid = *gid;
1276 	if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1277 		ge->port = mqp->port;
1278 		ge->added = 1;
1279 	}
1280 
1281 	mutex_lock(&mqp->mutex);
1282 	list_add_tail(&ge->list, &mqp->gid_list);
1283 	mutex_unlock(&mqp->mutex);
1284 
1285 	return 0;
1286 }
1287 
mlx4_ib_delete_counters_table(struct mlx4_ib_dev * ibdev,struct mlx4_ib_counters * ctr_table)1288 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1289 					  struct mlx4_ib_counters *ctr_table)
1290 {
1291 	struct counter_index *counter, *tmp_count;
1292 
1293 	mutex_lock(&ctr_table->mutex);
1294 	list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1295 				 list) {
1296 		if (counter->allocated)
1297 			mlx4_counter_free(ibdev->dev, counter->index);
1298 		list_del(&counter->list);
1299 		kfree(counter);
1300 	}
1301 	mutex_unlock(&ctr_table->mutex);
1302 }
1303 
mlx4_ib_add_mc(struct mlx4_ib_dev * mdev,struct mlx4_ib_qp * mqp,union ib_gid * gid)1304 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1305 		   union ib_gid *gid)
1306 {
1307 	struct net_device *ndev;
1308 	int ret = 0;
1309 
1310 	if (!mqp->port)
1311 		return 0;
1312 
1313 	spin_lock_bh(&mdev->iboe.lock);
1314 	ndev = mdev->iboe.netdevs[mqp->port - 1];
1315 	dev_hold(ndev);
1316 	spin_unlock_bh(&mdev->iboe.lock);
1317 
1318 	if (ndev) {
1319 		ret = 1;
1320 		dev_put(ndev);
1321 	}
1322 
1323 	return ret;
1324 }
1325 
1326 struct mlx4_ib_steering {
1327 	struct list_head list;
1328 	struct mlx4_flow_reg_id reg_id;
1329 	union ib_gid gid;
1330 };
1331 
1332 #define LAST_ETH_FIELD vlan_tag
1333 #define LAST_IB_FIELD sl
1334 #define LAST_IPV4_FIELD dst_ip
1335 #define LAST_TCP_UDP_FIELD src_port
1336 
1337 /* Field is the last supported field */
1338 #define FIELDS_NOT_SUPPORTED(filter, field)\
1339 	memchr_inv((void *)&filter.field  +\
1340 		   sizeof(filter.field), 0,\
1341 		   sizeof(filter) -\
1342 		   offsetof(typeof(filter), field) -\
1343 		   sizeof(filter.field))
1344 
parse_flow_attr(struct mlx4_dev * dev,u32 qp_num,union ib_flow_spec * ib_spec,struct _rule_hw * mlx4_spec)1345 static int parse_flow_attr(struct mlx4_dev *dev,
1346 			   u32 qp_num,
1347 			   union ib_flow_spec *ib_spec,
1348 			   struct _rule_hw *mlx4_spec)
1349 {
1350 	enum mlx4_net_trans_rule_id type;
1351 
1352 	switch (ib_spec->type) {
1353 	case IB_FLOW_SPEC_ETH:
1354 		if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1355 			return -ENOTSUPP;
1356 
1357 		type = MLX4_NET_TRANS_RULE_ID_ETH;
1358 		memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1359 		       ETH_ALEN);
1360 		memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1361 		       ETH_ALEN);
1362 		mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1363 		mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1364 		break;
1365 	case IB_FLOW_SPEC_IB:
1366 		if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1367 			return -ENOTSUPP;
1368 
1369 		type = MLX4_NET_TRANS_RULE_ID_IB;
1370 		mlx4_spec->ib.l3_qpn =
1371 			cpu_to_be32(qp_num);
1372 		mlx4_spec->ib.qpn_mask =
1373 			cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1374 		break;
1375 
1376 
1377 	case IB_FLOW_SPEC_IPV4:
1378 		if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1379 			return -ENOTSUPP;
1380 
1381 		type = MLX4_NET_TRANS_RULE_ID_IPV4;
1382 		mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1383 		mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1384 		mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1385 		mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1386 		break;
1387 
1388 	case IB_FLOW_SPEC_TCP:
1389 	case IB_FLOW_SPEC_UDP:
1390 		if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1391 			return -ENOTSUPP;
1392 
1393 		type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1394 					MLX4_NET_TRANS_RULE_ID_TCP :
1395 					MLX4_NET_TRANS_RULE_ID_UDP;
1396 		mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1397 		mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1398 		mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1399 		mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1400 		break;
1401 
1402 	default:
1403 		return -EINVAL;
1404 	}
1405 	if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1406 	    mlx4_hw_rule_sz(dev, type) < 0)
1407 		return -EINVAL;
1408 	mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1409 	mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1410 	return mlx4_hw_rule_sz(dev, type);
1411 }
1412 
1413 struct default_rules {
1414 	__u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1415 	__u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1416 	__u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1417 	__u8  link_layer;
1418 };
1419 static const struct default_rules default_table[] = {
1420 	{
1421 		.mandatory_fields = {IB_FLOW_SPEC_IPV4},
1422 		.mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1423 		.rules_create_list = {IB_FLOW_SPEC_IB},
1424 		.link_layer = IB_LINK_LAYER_INFINIBAND
1425 	}
1426 };
1427 
__mlx4_ib_default_rules_match(struct ib_qp * qp,struct ib_flow_attr * flow_attr)1428 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1429 					 struct ib_flow_attr *flow_attr)
1430 {
1431 	int i, j, k;
1432 	void *ib_flow;
1433 	const struct default_rules *pdefault_rules = default_table;
1434 	u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1435 
1436 	for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1437 		__u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1438 		memset(&field_types, 0, sizeof(field_types));
1439 
1440 		if (link_layer != pdefault_rules->link_layer)
1441 			continue;
1442 
1443 		ib_flow = flow_attr + 1;
1444 		/* we assume the specs are sorted */
1445 		for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1446 		     j < flow_attr->num_of_specs; k++) {
1447 			union ib_flow_spec *current_flow =
1448 				(union ib_flow_spec *)ib_flow;
1449 
1450 			/* same layer but different type */
1451 			if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1452 			     (pdefault_rules->mandatory_fields[k] &
1453 			      IB_FLOW_SPEC_LAYER_MASK)) &&
1454 			    (current_flow->type !=
1455 			     pdefault_rules->mandatory_fields[k]))
1456 				goto out;
1457 
1458 			/* same layer, try match next one */
1459 			if (current_flow->type ==
1460 			    pdefault_rules->mandatory_fields[k]) {
1461 				j++;
1462 				ib_flow +=
1463 					((union ib_flow_spec *)ib_flow)->size;
1464 			}
1465 		}
1466 
1467 		ib_flow = flow_attr + 1;
1468 		for (j = 0; j < flow_attr->num_of_specs;
1469 		     j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1470 			for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1471 				/* same layer and same type */
1472 				if (((union ib_flow_spec *)ib_flow)->type ==
1473 				    pdefault_rules->mandatory_not_fields[k])
1474 					goto out;
1475 
1476 		return i;
1477 	}
1478 out:
1479 	return -1;
1480 }
1481 
__mlx4_ib_create_default_rules(struct mlx4_ib_dev * mdev,struct ib_qp * qp,const struct default_rules * pdefault_rules,struct _rule_hw * mlx4_spec)1482 static int __mlx4_ib_create_default_rules(
1483 		struct mlx4_ib_dev *mdev,
1484 		struct ib_qp *qp,
1485 		const struct default_rules *pdefault_rules,
1486 		struct _rule_hw *mlx4_spec) {
1487 	int size = 0;
1488 	int i;
1489 
1490 	for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1491 		union ib_flow_spec ib_spec = {};
1492 		int ret;
1493 
1494 		switch (pdefault_rules->rules_create_list[i]) {
1495 		case 0:
1496 			/* no rule */
1497 			continue;
1498 		case IB_FLOW_SPEC_IB:
1499 			ib_spec.type = IB_FLOW_SPEC_IB;
1500 			ib_spec.size = sizeof(struct ib_flow_spec_ib);
1501 
1502 			break;
1503 		default:
1504 			/* invalid rule */
1505 			return -EINVAL;
1506 		}
1507 		/* We must put empty rule, qpn is being ignored */
1508 		ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1509 				      mlx4_spec);
1510 		if (ret < 0) {
1511 			pr_info("invalid parsing\n");
1512 			return -EINVAL;
1513 		}
1514 
1515 		mlx4_spec = (void *)mlx4_spec + ret;
1516 		size += ret;
1517 	}
1518 	return size;
1519 }
1520 
__mlx4_ib_create_flow(struct ib_qp * qp,struct ib_flow_attr * flow_attr,int domain,enum mlx4_net_trans_promisc_mode flow_type,u64 * reg_id)1521 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1522 			  int domain,
1523 			  enum mlx4_net_trans_promisc_mode flow_type,
1524 			  u64 *reg_id)
1525 {
1526 	int ret, i;
1527 	int size = 0;
1528 	void *ib_flow;
1529 	struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1530 	struct mlx4_cmd_mailbox *mailbox;
1531 	struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1532 	int default_flow;
1533 
1534 	if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1535 		pr_err("Invalid priority value %d\n", flow_attr->priority);
1536 		return -EINVAL;
1537 	}
1538 
1539 	if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1540 		return -EINVAL;
1541 
1542 	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1543 	if (IS_ERR(mailbox))
1544 		return PTR_ERR(mailbox);
1545 	ctrl = mailbox->buf;
1546 
1547 	ctrl->prio = cpu_to_be16(domain | flow_attr->priority);
1548 	ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1549 	ctrl->port = flow_attr->port;
1550 	ctrl->qpn = cpu_to_be32(qp->qp_num);
1551 
1552 	ib_flow = flow_attr + 1;
1553 	size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1554 	/* Add default flows */
1555 	default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1556 	if (default_flow >= 0) {
1557 		ret = __mlx4_ib_create_default_rules(
1558 				mdev, qp, default_table + default_flow,
1559 				mailbox->buf + size);
1560 		if (ret < 0) {
1561 			mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1562 			return -EINVAL;
1563 		}
1564 		size += ret;
1565 	}
1566 	for (i = 0; i < flow_attr->num_of_specs; i++) {
1567 		ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1568 				      mailbox->buf + size);
1569 		if (ret < 0) {
1570 			mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1571 			return -EINVAL;
1572 		}
1573 		ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1574 		size += ret;
1575 	}
1576 
1577 	if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1578 	    flow_attr->num_of_specs == 1) {
1579 		struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1580 		enum ib_flow_spec_type header_spec =
1581 			((union ib_flow_spec *)(flow_attr + 1))->type;
1582 
1583 		if (header_spec == IB_FLOW_SPEC_ETH)
1584 			mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1585 	}
1586 
1587 	ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1588 			   MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1589 			   MLX4_CMD_NATIVE);
1590 	if (ret == -ENOMEM)
1591 		pr_err("mcg table is full. Fail to register network rule.\n");
1592 	else if (ret == -ENXIO)
1593 		pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1594 	else if (ret)
1595 		pr_err("Invalid argument. Fail to register network rule.\n");
1596 
1597 	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1598 	return ret;
1599 }
1600 
__mlx4_ib_destroy_flow(struct mlx4_dev * dev,u64 reg_id)1601 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1602 {
1603 	int err;
1604 	err = mlx4_cmd(dev, reg_id, 0, 0,
1605 		       MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1606 		       MLX4_CMD_NATIVE);
1607 	if (err)
1608 		pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1609 		       reg_id);
1610 	return err;
1611 }
1612 
mlx4_ib_tunnel_steer_add(struct ib_qp * qp,struct ib_flow_attr * flow_attr,u64 * reg_id)1613 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1614 				    u64 *reg_id)
1615 {
1616 	void *ib_flow;
1617 	union ib_flow_spec *ib_spec;
1618 	struct mlx4_dev	*dev = to_mdev(qp->device)->dev;
1619 	int err = 0;
1620 
1621 	if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1622 	    dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1623 		return 0; /* do nothing */
1624 
1625 	ib_flow = flow_attr + 1;
1626 	ib_spec = (union ib_flow_spec *)ib_flow;
1627 
1628 	if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1629 		return 0; /* do nothing */
1630 
1631 	err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1632 				    flow_attr->port, qp->qp_num,
1633 				    MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1634 				    reg_id);
1635 	return err;
1636 }
1637 
mlx4_ib_add_dont_trap_rule(struct mlx4_dev * dev,struct ib_flow_attr * flow_attr,enum mlx4_net_trans_promisc_mode * type)1638 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1639 				      struct ib_flow_attr *flow_attr,
1640 				      enum mlx4_net_trans_promisc_mode *type)
1641 {
1642 	int err = 0;
1643 
1644 	if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1645 	    (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1646 	    (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1647 		return -EOPNOTSUPP;
1648 	}
1649 
1650 	if (flow_attr->num_of_specs == 0) {
1651 		type[0] = MLX4_FS_MC_SNIFFER;
1652 		type[1] = MLX4_FS_UC_SNIFFER;
1653 	} else {
1654 		union ib_flow_spec *ib_spec;
1655 
1656 		ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1657 		if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1658 			return -EINVAL;
1659 
1660 		/* if all is zero than MC and UC */
1661 		if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1662 			type[0] = MLX4_FS_MC_SNIFFER;
1663 			type[1] = MLX4_FS_UC_SNIFFER;
1664 		} else {
1665 			u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1666 					    ib_spec->eth.mask.dst_mac[1],
1667 					    ib_spec->eth.mask.dst_mac[2],
1668 					    ib_spec->eth.mask.dst_mac[3],
1669 					    ib_spec->eth.mask.dst_mac[4],
1670 					    ib_spec->eth.mask.dst_mac[5]};
1671 
1672 			/* Above xor was only on MC bit, non empty mask is valid
1673 			 * only if this bit is set and rest are zero.
1674 			 */
1675 			if (!is_zero_ether_addr(&mac[0]))
1676 				return -EINVAL;
1677 
1678 			if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1679 				type[0] = MLX4_FS_MC_SNIFFER;
1680 			else
1681 				type[0] = MLX4_FS_UC_SNIFFER;
1682 		}
1683 	}
1684 
1685 	return err;
1686 }
1687 
mlx4_ib_create_flow(struct ib_qp * qp,struct ib_flow_attr * flow_attr,struct ib_udata * udata)1688 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1689 					   struct ib_flow_attr *flow_attr,
1690 					   struct ib_udata *udata)
1691 {
1692 	int err = 0, i = 0, j = 0;
1693 	struct mlx4_ib_flow *mflow;
1694 	enum mlx4_net_trans_promisc_mode type[2];
1695 	struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1696 	int is_bonded = mlx4_is_bonded(dev);
1697 
1698 	if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)
1699 		return ERR_PTR(-EOPNOTSUPP);
1700 
1701 	if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1702 	    (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1703 		return ERR_PTR(-EOPNOTSUPP);
1704 
1705 	if (udata &&
1706 	    udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen))
1707 		return ERR_PTR(-EOPNOTSUPP);
1708 
1709 	memset(type, 0, sizeof(type));
1710 
1711 	mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1712 	if (!mflow) {
1713 		err = -ENOMEM;
1714 		goto err_free;
1715 	}
1716 
1717 	switch (flow_attr->type) {
1718 	case IB_FLOW_ATTR_NORMAL:
1719 		/* If dont trap flag (continue match) is set, under specific
1720 		 * condition traffic be replicated to given qp,
1721 		 * without stealing it
1722 		 */
1723 		if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1724 			err = mlx4_ib_add_dont_trap_rule(dev,
1725 							 flow_attr,
1726 							 type);
1727 			if (err)
1728 				goto err_free;
1729 		} else {
1730 			type[0] = MLX4_FS_REGULAR;
1731 		}
1732 		break;
1733 
1734 	case IB_FLOW_ATTR_ALL_DEFAULT:
1735 		type[0] = MLX4_FS_ALL_DEFAULT;
1736 		break;
1737 
1738 	case IB_FLOW_ATTR_MC_DEFAULT:
1739 		type[0] = MLX4_FS_MC_DEFAULT;
1740 		break;
1741 
1742 	case IB_FLOW_ATTR_SNIFFER:
1743 		type[0] = MLX4_FS_MIRROR_RX_PORT;
1744 		type[1] = MLX4_FS_MIRROR_SX_PORT;
1745 		break;
1746 
1747 	default:
1748 		err = -EINVAL;
1749 		goto err_free;
1750 	}
1751 
1752 	while (i < ARRAY_SIZE(type) && type[i]) {
1753 		err = __mlx4_ib_create_flow(qp, flow_attr, MLX4_DOMAIN_UVERBS,
1754 					    type[i], &mflow->reg_id[i].id);
1755 		if (err)
1756 			goto err_create_flow;
1757 		if (is_bonded) {
1758 			/* Application always sees one port so the mirror rule
1759 			 * must be on port #2
1760 			 */
1761 			flow_attr->port = 2;
1762 			err = __mlx4_ib_create_flow(qp, flow_attr,
1763 						    MLX4_DOMAIN_UVERBS, type[j],
1764 						    &mflow->reg_id[j].mirror);
1765 			flow_attr->port = 1;
1766 			if (err)
1767 				goto err_create_flow;
1768 			j++;
1769 		}
1770 
1771 		i++;
1772 	}
1773 
1774 	if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1775 		err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1776 					       &mflow->reg_id[i].id);
1777 		if (err)
1778 			goto err_create_flow;
1779 
1780 		if (is_bonded) {
1781 			flow_attr->port = 2;
1782 			err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1783 						       &mflow->reg_id[j].mirror);
1784 			flow_attr->port = 1;
1785 			if (err)
1786 				goto err_create_flow;
1787 			j++;
1788 		}
1789 		/* function to create mirror rule */
1790 		i++;
1791 	}
1792 
1793 	return &mflow->ibflow;
1794 
1795 err_create_flow:
1796 	while (i) {
1797 		(void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1798 					     mflow->reg_id[i].id);
1799 		i--;
1800 	}
1801 
1802 	while (j) {
1803 		(void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1804 					     mflow->reg_id[j].mirror);
1805 		j--;
1806 	}
1807 err_free:
1808 	kfree(mflow);
1809 	return ERR_PTR(err);
1810 }
1811 
mlx4_ib_destroy_flow(struct ib_flow * flow_id)1812 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1813 {
1814 	int err, ret = 0;
1815 	int i = 0;
1816 	struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1817 	struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1818 
1819 	while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1820 		err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1821 		if (err)
1822 			ret = err;
1823 		if (mflow->reg_id[i].mirror) {
1824 			err = __mlx4_ib_destroy_flow(mdev->dev,
1825 						     mflow->reg_id[i].mirror);
1826 			if (err)
1827 				ret = err;
1828 		}
1829 		i++;
1830 	}
1831 
1832 	kfree(mflow);
1833 	return ret;
1834 }
1835 
mlx4_ib_mcg_attach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)1836 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1837 {
1838 	int err;
1839 	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1840 	struct mlx4_dev	*dev = mdev->dev;
1841 	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1842 	struct mlx4_ib_steering *ib_steering = NULL;
1843 	enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1844 	struct mlx4_flow_reg_id	reg_id;
1845 
1846 	if (mdev->dev->caps.steering_mode ==
1847 	    MLX4_STEERING_MODE_DEVICE_MANAGED) {
1848 		ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1849 		if (!ib_steering)
1850 			return -ENOMEM;
1851 	}
1852 
1853 	err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1854 				    !!(mqp->flags &
1855 				       MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1856 				    prot, &reg_id.id);
1857 	if (err) {
1858 		pr_err("multicast attach op failed, err %d\n", err);
1859 		goto err_malloc;
1860 	}
1861 
1862 	reg_id.mirror = 0;
1863 	if (mlx4_is_bonded(dev)) {
1864 		err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1865 					    (mqp->port == 1) ? 2 : 1,
1866 					    !!(mqp->flags &
1867 					    MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1868 					    prot, &reg_id.mirror);
1869 		if (err)
1870 			goto err_add;
1871 	}
1872 
1873 	err = add_gid_entry(ibqp, gid);
1874 	if (err)
1875 		goto err_add;
1876 
1877 	if (ib_steering) {
1878 		memcpy(ib_steering->gid.raw, gid->raw, 16);
1879 		ib_steering->reg_id = reg_id;
1880 		mutex_lock(&mqp->mutex);
1881 		list_add(&ib_steering->list, &mqp->steering_rules);
1882 		mutex_unlock(&mqp->mutex);
1883 	}
1884 	return 0;
1885 
1886 err_add:
1887 	mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1888 			      prot, reg_id.id);
1889 	if (reg_id.mirror)
1890 		mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1891 				      prot, reg_id.mirror);
1892 err_malloc:
1893 	kfree(ib_steering);
1894 
1895 	return err;
1896 }
1897 
find_gid_entry(struct mlx4_ib_qp * qp,u8 * raw)1898 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1899 {
1900 	struct mlx4_ib_gid_entry *ge;
1901 	struct mlx4_ib_gid_entry *tmp;
1902 	struct mlx4_ib_gid_entry *ret = NULL;
1903 
1904 	list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1905 		if (!memcmp(raw, ge->gid.raw, 16)) {
1906 			ret = ge;
1907 			break;
1908 		}
1909 	}
1910 
1911 	return ret;
1912 }
1913 
mlx4_ib_mcg_detach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)1914 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1915 {
1916 	int err;
1917 	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1918 	struct mlx4_dev *dev = mdev->dev;
1919 	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1920 	struct net_device *ndev;
1921 	struct mlx4_ib_gid_entry *ge;
1922 	struct mlx4_flow_reg_id reg_id = {0, 0};
1923 	enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1924 
1925 	if (mdev->dev->caps.steering_mode ==
1926 	    MLX4_STEERING_MODE_DEVICE_MANAGED) {
1927 		struct mlx4_ib_steering *ib_steering;
1928 
1929 		mutex_lock(&mqp->mutex);
1930 		list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1931 			if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1932 				list_del(&ib_steering->list);
1933 				break;
1934 			}
1935 		}
1936 		mutex_unlock(&mqp->mutex);
1937 		if (&ib_steering->list == &mqp->steering_rules) {
1938 			pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1939 			return -EINVAL;
1940 		}
1941 		reg_id = ib_steering->reg_id;
1942 		kfree(ib_steering);
1943 	}
1944 
1945 	err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1946 				    prot, reg_id.id);
1947 	if (err)
1948 		return err;
1949 
1950 	if (mlx4_is_bonded(dev)) {
1951 		err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1952 					    prot, reg_id.mirror);
1953 		if (err)
1954 			return err;
1955 	}
1956 
1957 	mutex_lock(&mqp->mutex);
1958 	ge = find_gid_entry(mqp, gid->raw);
1959 	if (ge) {
1960 		spin_lock_bh(&mdev->iboe.lock);
1961 		ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1962 		dev_hold(ndev);
1963 		spin_unlock_bh(&mdev->iboe.lock);
1964 		dev_put(ndev);
1965 		list_del(&ge->list);
1966 		kfree(ge);
1967 	} else
1968 		pr_warn("could not find mgid entry\n");
1969 
1970 	mutex_unlock(&mqp->mutex);
1971 
1972 	return 0;
1973 }
1974 
init_node_data(struct mlx4_ib_dev * dev)1975 static int init_node_data(struct mlx4_ib_dev *dev)
1976 {
1977 	struct ib_smp *in_mad;
1978 	struct ib_smp *out_mad;
1979 	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1980 	int err = -ENOMEM;
1981 
1982 	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1983 	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1984 	if (!in_mad || !out_mad)
1985 		goto out;
1986 
1987 	ib_init_query_mad(in_mad);
1988 	in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1989 	if (mlx4_is_master(dev->dev))
1990 		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1991 
1992 	err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1993 	if (err)
1994 		goto out;
1995 
1996 	memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1997 
1998 	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1999 
2000 	err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2001 	if (err)
2002 		goto out;
2003 
2004 	dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2005 	memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2006 
2007 out:
2008 	kfree(in_mad);
2009 	kfree(out_mad);
2010 	return err;
2011 }
2012 
hca_type_show(struct device * device,struct device_attribute * attr,char * buf)2013 static ssize_t hca_type_show(struct device *device,
2014 			     struct device_attribute *attr, char *buf)
2015 {
2016 	struct mlx4_ib_dev *dev =
2017 		rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2018 
2019 	return sysfs_emit(buf, "MT%d\n", dev->dev->persist->pdev->device);
2020 }
2021 static DEVICE_ATTR_RO(hca_type);
2022 
hw_rev_show(struct device * device,struct device_attribute * attr,char * buf)2023 static ssize_t hw_rev_show(struct device *device,
2024 			   struct device_attribute *attr, char *buf)
2025 {
2026 	struct mlx4_ib_dev *dev =
2027 		rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2028 
2029 	return sysfs_emit(buf, "%x\n", dev->dev->rev_id);
2030 }
2031 static DEVICE_ATTR_RO(hw_rev);
2032 
board_id_show(struct device * device,struct device_attribute * attr,char * buf)2033 static ssize_t board_id_show(struct device *device,
2034 			     struct device_attribute *attr, char *buf)
2035 {
2036 	struct mlx4_ib_dev *dev =
2037 		rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2038 
2039 	return sysfs_emit(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id);
2040 }
2041 static DEVICE_ATTR_RO(board_id);
2042 
2043 static struct attribute *mlx4_class_attributes[] = {
2044 	&dev_attr_hw_rev.attr,
2045 	&dev_attr_hca_type.attr,
2046 	&dev_attr_board_id.attr,
2047 	NULL
2048 };
2049 
2050 static const struct attribute_group mlx4_attr_group = {
2051 	.attrs = mlx4_class_attributes,
2052 };
2053 
2054 struct diag_counter {
2055 	const char *name;
2056 	u32 offset;
2057 };
2058 
2059 #define DIAG_COUNTER(_name, _offset)			\
2060 	{ .name = #_name, .offset = _offset }
2061 
2062 static const struct diag_counter diag_basic[] = {
2063 	DIAG_COUNTER(rq_num_lle, 0x00),
2064 	DIAG_COUNTER(sq_num_lle, 0x04),
2065 	DIAG_COUNTER(rq_num_lqpoe, 0x08),
2066 	DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2067 	DIAG_COUNTER(rq_num_lpe, 0x18),
2068 	DIAG_COUNTER(sq_num_lpe, 0x1C),
2069 	DIAG_COUNTER(rq_num_wrfe, 0x20),
2070 	DIAG_COUNTER(sq_num_wrfe, 0x24),
2071 	DIAG_COUNTER(sq_num_mwbe, 0x2C),
2072 	DIAG_COUNTER(sq_num_bre, 0x34),
2073 	DIAG_COUNTER(sq_num_rire, 0x44),
2074 	DIAG_COUNTER(rq_num_rire, 0x48),
2075 	DIAG_COUNTER(sq_num_rae, 0x4C),
2076 	DIAG_COUNTER(rq_num_rae, 0x50),
2077 	DIAG_COUNTER(sq_num_roe, 0x54),
2078 	DIAG_COUNTER(sq_num_tree, 0x5C),
2079 	DIAG_COUNTER(sq_num_rree, 0x64),
2080 	DIAG_COUNTER(rq_num_rnr, 0x68),
2081 	DIAG_COUNTER(sq_num_rnr, 0x6C),
2082 	DIAG_COUNTER(rq_num_oos, 0x100),
2083 	DIAG_COUNTER(sq_num_oos, 0x104),
2084 };
2085 
2086 static const struct diag_counter diag_ext[] = {
2087 	DIAG_COUNTER(rq_num_dup, 0x130),
2088 	DIAG_COUNTER(sq_num_to, 0x134),
2089 };
2090 
2091 static const struct diag_counter diag_device_only[] = {
2092 	DIAG_COUNTER(num_cqovf, 0x1A0),
2093 	DIAG_COUNTER(rq_num_udsdprd, 0x118),
2094 };
2095 
2096 static struct rdma_hw_stats *
mlx4_ib_alloc_hw_device_stats(struct ib_device * ibdev)2097 mlx4_ib_alloc_hw_device_stats(struct ib_device *ibdev)
2098 {
2099 	struct mlx4_ib_dev *dev = to_mdev(ibdev);
2100 	struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2101 
2102 	if (!diag[0].descs)
2103 		return NULL;
2104 
2105 	return rdma_alloc_hw_stats_struct(diag[0].descs, diag[0].num_counters,
2106 					  RDMA_HW_STATS_DEFAULT_LIFESPAN);
2107 }
2108 
2109 static struct rdma_hw_stats *
mlx4_ib_alloc_hw_port_stats(struct ib_device * ibdev,u32 port_num)2110 mlx4_ib_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num)
2111 {
2112 	struct mlx4_ib_dev *dev = to_mdev(ibdev);
2113 	struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2114 
2115 	if (!diag[1].descs)
2116 		return NULL;
2117 
2118 	return rdma_alloc_hw_stats_struct(diag[1].descs, diag[1].num_counters,
2119 					  RDMA_HW_STATS_DEFAULT_LIFESPAN);
2120 }
2121 
mlx4_ib_get_hw_stats(struct ib_device * ibdev,struct rdma_hw_stats * stats,u32 port,int index)2122 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2123 				struct rdma_hw_stats *stats,
2124 				u32 port, int index)
2125 {
2126 	struct mlx4_ib_dev *dev = to_mdev(ibdev);
2127 	struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2128 	u32 hw_value[ARRAY_SIZE(diag_device_only) +
2129 		ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2130 	int ret;
2131 	int i;
2132 
2133 	ret = mlx4_query_diag_counters(dev->dev,
2134 				       MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2135 				       diag[!!port].offset, hw_value,
2136 				       diag[!!port].num_counters, port);
2137 
2138 	if (ret)
2139 		return ret;
2140 
2141 	for (i = 0; i < diag[!!port].num_counters; i++)
2142 		stats->value[i] = hw_value[i];
2143 
2144 	return diag[!!port].num_counters;
2145 }
2146 
__mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev * ibdev,struct rdma_stat_desc ** pdescs,u32 ** offset,u32 * num,bool port)2147 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2148 					 struct rdma_stat_desc **pdescs,
2149 					 u32 **offset, u32 *num, bool port)
2150 {
2151 	u32 num_counters;
2152 
2153 	num_counters = ARRAY_SIZE(diag_basic);
2154 
2155 	if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2156 		num_counters += ARRAY_SIZE(diag_ext);
2157 
2158 	if (!port)
2159 		num_counters += ARRAY_SIZE(diag_device_only);
2160 
2161 	*pdescs = kcalloc(num_counters, sizeof(struct rdma_stat_desc),
2162 			  GFP_KERNEL);
2163 	if (!*pdescs)
2164 		return -ENOMEM;
2165 
2166 	*offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2167 	if (!*offset)
2168 		goto err;
2169 
2170 	*num = num_counters;
2171 
2172 	return 0;
2173 
2174 err:
2175 	kfree(*pdescs);
2176 	return -ENOMEM;
2177 }
2178 
mlx4_ib_fill_diag_counters(struct mlx4_ib_dev * ibdev,struct rdma_stat_desc * descs,u32 * offset,bool port)2179 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2180 				       struct rdma_stat_desc *descs,
2181 				       u32 *offset, bool port)
2182 {
2183 	int i;
2184 	int j;
2185 
2186 	for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2187 		descs[i].name = diag_basic[i].name;
2188 		offset[i] = diag_basic[i].offset;
2189 	}
2190 
2191 	if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2192 		for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2193 			descs[j].name = diag_ext[i].name;
2194 			offset[j] = diag_ext[i].offset;
2195 		}
2196 	}
2197 
2198 	if (!port) {
2199 		for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2200 			descs[j].name = diag_device_only[i].name;
2201 			offset[j] = diag_device_only[i].offset;
2202 		}
2203 	}
2204 }
2205 
2206 static const struct ib_device_ops mlx4_ib_hw_stats_ops = {
2207 	.alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats,
2208 	.alloc_hw_port_stats = mlx4_ib_alloc_hw_port_stats,
2209 	.get_hw_stats = mlx4_ib_get_hw_stats,
2210 };
2211 
2212 static const struct ib_device_ops mlx4_ib_hw_stats_ops1 = {
2213 	.alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats,
2214 	.get_hw_stats = mlx4_ib_get_hw_stats,
2215 };
2216 
mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev * ibdev)2217 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2218 {
2219 	struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2220 	int i;
2221 	int ret;
2222 	bool per_port = !!(ibdev->dev->caps.flags2 &
2223 		MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2224 
2225 	if (mlx4_is_slave(ibdev->dev))
2226 		return 0;
2227 
2228 	for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2229 		/*
2230 		 * i == 1 means we are building port counters, set a different
2231 		 * stats ops without port stats callback.
2232 		 */
2233 		if (i && !per_port) {
2234 			ib_set_device_ops(&ibdev->ib_dev,
2235 					  &mlx4_ib_hw_stats_ops1);
2236 
2237 			return 0;
2238 		}
2239 
2240 		ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].descs,
2241 						    &diag[i].offset,
2242 						    &diag[i].num_counters, i);
2243 		if (ret)
2244 			goto err_alloc;
2245 
2246 		mlx4_ib_fill_diag_counters(ibdev, diag[i].descs,
2247 					   diag[i].offset, i);
2248 	}
2249 
2250 	ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops);
2251 
2252 	return 0;
2253 
2254 err_alloc:
2255 	if (i) {
2256 		kfree(diag[i - 1].descs);
2257 		kfree(diag[i - 1].offset);
2258 	}
2259 
2260 	return ret;
2261 }
2262 
mlx4_ib_diag_cleanup(struct mlx4_ib_dev * ibdev)2263 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2264 {
2265 	int i;
2266 
2267 	for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2268 		kfree(ibdev->diag_counters[i].offset);
2269 		kfree(ibdev->diag_counters[i].descs);
2270 	}
2271 }
2272 
2273 #define MLX4_IB_INVALID_MAC	((u64)-1)
mlx4_ib_update_qps(struct mlx4_ib_dev * ibdev,struct net_device * dev,int port)2274 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2275 			       struct net_device *dev,
2276 			       int port)
2277 {
2278 	u64 new_smac = 0;
2279 	u64 release_mac = MLX4_IB_INVALID_MAC;
2280 	struct mlx4_ib_qp *qp;
2281 
2282 	new_smac = ether_addr_to_u64(dev->dev_addr);
2283 	atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2284 
2285 	/* no need for update QP1 and mac registration in non-SRIOV */
2286 	if (!mlx4_is_mfunc(ibdev->dev))
2287 		return;
2288 
2289 	mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2290 	qp = ibdev->qp1_proxy[port - 1];
2291 	if (qp) {
2292 		int new_smac_index;
2293 		u64 old_smac;
2294 		struct mlx4_update_qp_params update_params;
2295 
2296 		mutex_lock(&qp->mutex);
2297 		old_smac = qp->pri.smac;
2298 		if (new_smac == old_smac)
2299 			goto unlock;
2300 
2301 		new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2302 
2303 		if (new_smac_index < 0)
2304 			goto unlock;
2305 
2306 		update_params.smac_index = new_smac_index;
2307 		if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2308 				   &update_params)) {
2309 			release_mac = new_smac;
2310 			goto unlock;
2311 		}
2312 		/* if old port was zero, no mac was yet registered for this QP */
2313 		if (qp->pri.smac_port)
2314 			release_mac = old_smac;
2315 		qp->pri.smac = new_smac;
2316 		qp->pri.smac_port = port;
2317 		qp->pri.smac_index = new_smac_index;
2318 	}
2319 
2320 unlock:
2321 	if (release_mac != MLX4_IB_INVALID_MAC)
2322 		mlx4_unregister_mac(ibdev->dev, port, release_mac);
2323 	if (qp)
2324 		mutex_unlock(&qp->mutex);
2325 	mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2326 }
2327 
mlx4_ib_scan_netdev(struct mlx4_ib_dev * ibdev,struct net_device * dev,unsigned long event)2328 static void mlx4_ib_scan_netdev(struct mlx4_ib_dev *ibdev,
2329 				struct net_device *dev,
2330 				unsigned long event)
2331 
2332 {
2333 	struct mlx4_ib_iboe *iboe = &ibdev->iboe;
2334 
2335 	ASSERT_RTNL();
2336 
2337 	if (dev->dev.parent != ibdev->ib_dev.dev.parent)
2338 		return;
2339 
2340 	spin_lock_bh(&iboe->lock);
2341 
2342 	iboe->netdevs[dev->dev_port] = event != NETDEV_UNREGISTER ? dev : NULL;
2343 
2344 	if (event == NETDEV_UP || event == NETDEV_DOWN) {
2345 		enum ib_port_state port_state;
2346 		struct ib_event ibev = { };
2347 
2348 		if (ib_get_cached_port_state(&ibdev->ib_dev, dev->dev_port + 1,
2349 					     &port_state))
2350 			goto iboe_out;
2351 
2352 		if (event == NETDEV_UP &&
2353 		    (port_state != IB_PORT_ACTIVE ||
2354 		     iboe->last_port_state[dev->dev_port] != IB_PORT_DOWN))
2355 			goto iboe_out;
2356 		if (event == NETDEV_DOWN &&
2357 		    (port_state != IB_PORT_DOWN ||
2358 		     iboe->last_port_state[dev->dev_port] != IB_PORT_ACTIVE))
2359 			goto iboe_out;
2360 		iboe->last_port_state[dev->dev_port] = port_state;
2361 
2362 		ibev.device = &ibdev->ib_dev;
2363 		ibev.element.port_num = dev->dev_port + 1;
2364 		ibev.event = event == NETDEV_UP ? IB_EVENT_PORT_ACTIVE :
2365 						  IB_EVENT_PORT_ERR;
2366 		ib_dispatch_event(&ibev);
2367 	}
2368 
2369 iboe_out:
2370 	spin_unlock_bh(&iboe->lock);
2371 
2372 	if (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2373 	    event == NETDEV_UP || event == NETDEV_CHANGE)
2374 		mlx4_ib_update_qps(ibdev, dev, dev->dev_port + 1);
2375 }
2376 
mlx4_ib_netdev_event(struct notifier_block * this,unsigned long event,void * ptr)2377 static int mlx4_ib_netdev_event(struct notifier_block *this,
2378 				unsigned long event, void *ptr)
2379 {
2380 	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2381 	struct mlx4_ib_dev *ibdev;
2382 
2383 	if (!net_eq(dev_net(dev), &init_net))
2384 		return NOTIFY_DONE;
2385 
2386 	ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2387 	mlx4_ib_scan_netdev(ibdev, dev, event);
2388 
2389 	return NOTIFY_DONE;
2390 }
2391 
init_pkeys(struct mlx4_ib_dev * ibdev)2392 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2393 {
2394 	int port;
2395 	int slave;
2396 	int i;
2397 
2398 	if (mlx4_is_master(ibdev->dev)) {
2399 		for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2400 		     ++slave) {
2401 			for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2402 				for (i = 0;
2403 				     i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2404 				     ++i) {
2405 					ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2406 					/* master has the identity virt2phys pkey mapping */
2407 						(slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2408 							ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2409 					mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2410 							     ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2411 				}
2412 			}
2413 		}
2414 		/* initialize pkey cache */
2415 		for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2416 			for (i = 0;
2417 			     i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2418 			     ++i)
2419 				ibdev->pkeys.phys_pkey_cache[port-1][i] =
2420 					(i) ? 0 : 0xFFFF;
2421 		}
2422 	}
2423 }
2424 
mlx4_ib_alloc_eqs(struct mlx4_dev * dev,struct mlx4_ib_dev * ibdev)2425 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2426 {
2427 	int i, j, eq = 0, total_eqs = 0;
2428 
2429 	ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2430 				  sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2431 	if (!ibdev->eq_table)
2432 		return;
2433 
2434 	for (i = 1; i <= dev->caps.num_ports; i++) {
2435 		for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2436 		     j++, total_eqs++) {
2437 			if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2438 				continue;
2439 			ibdev->eq_table[eq] = total_eqs;
2440 			if (!mlx4_assign_eq(dev, i,
2441 					    &ibdev->eq_table[eq]))
2442 				eq++;
2443 			else
2444 				ibdev->eq_table[eq] = -1;
2445 		}
2446 	}
2447 
2448 	for (i = eq; i < dev->caps.num_comp_vectors;
2449 	     ibdev->eq_table[i++] = -1)
2450 		;
2451 
2452 	/* Advertise the new number of EQs to clients */
2453 	ibdev->ib_dev.num_comp_vectors = eq;
2454 }
2455 
mlx4_ib_free_eqs(struct mlx4_dev * dev,struct mlx4_ib_dev * ibdev)2456 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2457 {
2458 	int i;
2459 	int total_eqs = ibdev->ib_dev.num_comp_vectors;
2460 
2461 	/* no eqs were allocated */
2462 	if (!ibdev->eq_table)
2463 		return;
2464 
2465 	/* Reset the advertised EQ number */
2466 	ibdev->ib_dev.num_comp_vectors = 0;
2467 
2468 	for (i = 0; i < total_eqs; i++)
2469 		mlx4_release_eq(dev, ibdev->eq_table[i]);
2470 
2471 	kfree(ibdev->eq_table);
2472 	ibdev->eq_table = NULL;
2473 }
2474 
mlx4_port_immutable(struct ib_device * ibdev,u32 port_num,struct ib_port_immutable * immutable)2475 static int mlx4_port_immutable(struct ib_device *ibdev, u32 port_num,
2476 			       struct ib_port_immutable *immutable)
2477 {
2478 	struct ib_port_attr attr;
2479 	struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2480 	int err;
2481 
2482 	if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2483 		immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2484 		immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2485 	} else {
2486 		if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2487 			immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2488 		if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2489 			immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2490 				RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2491 		immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2492 		if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2493 		    RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2494 			immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2495 	}
2496 
2497 	err = ib_query_port(ibdev, port_num, &attr);
2498 	if (err)
2499 		return err;
2500 
2501 	immutable->pkey_tbl_len = attr.pkey_tbl_len;
2502 	immutable->gid_tbl_len = attr.gid_tbl_len;
2503 
2504 	return 0;
2505 }
2506 
get_fw_ver_str(struct ib_device * device,char * str)2507 static void get_fw_ver_str(struct ib_device *device, char *str)
2508 {
2509 	struct mlx4_ib_dev *dev =
2510 		container_of(device, struct mlx4_ib_dev, ib_dev);
2511 	snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
2512 		 (int) (dev->dev->caps.fw_ver >> 32),
2513 		 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2514 		 (int) dev->dev->caps.fw_ver & 0xffff);
2515 }
2516 
2517 static const struct ib_device_ops mlx4_ib_dev_ops = {
2518 	.owner = THIS_MODULE,
2519 	.driver_id = RDMA_DRIVER_MLX4,
2520 	.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION,
2521 
2522 	.add_gid = mlx4_ib_add_gid,
2523 	.alloc_mr = mlx4_ib_alloc_mr,
2524 	.alloc_pd = mlx4_ib_alloc_pd,
2525 	.alloc_ucontext = mlx4_ib_alloc_ucontext,
2526 	.attach_mcast = mlx4_ib_mcg_attach,
2527 	.create_ah = mlx4_ib_create_ah,
2528 	.create_cq = mlx4_ib_create_cq,
2529 	.create_qp = mlx4_ib_create_qp,
2530 	.create_srq = mlx4_ib_create_srq,
2531 	.dealloc_pd = mlx4_ib_dealloc_pd,
2532 	.dealloc_ucontext = mlx4_ib_dealloc_ucontext,
2533 	.del_gid = mlx4_ib_del_gid,
2534 	.dereg_mr = mlx4_ib_dereg_mr,
2535 	.destroy_ah = mlx4_ib_destroy_ah,
2536 	.destroy_cq = mlx4_ib_destroy_cq,
2537 	.destroy_qp = mlx4_ib_destroy_qp,
2538 	.destroy_srq = mlx4_ib_destroy_srq,
2539 	.detach_mcast = mlx4_ib_mcg_detach,
2540 	.device_group = &mlx4_attr_group,
2541 	.disassociate_ucontext = mlx4_ib_disassociate_ucontext,
2542 	.drain_rq = mlx4_ib_drain_rq,
2543 	.drain_sq = mlx4_ib_drain_sq,
2544 	.get_dev_fw_str = get_fw_ver_str,
2545 	.get_dma_mr = mlx4_ib_get_dma_mr,
2546 	.get_link_layer = mlx4_ib_port_link_layer,
2547 	.get_netdev = mlx4_ib_get_netdev,
2548 	.get_port_immutable = mlx4_port_immutable,
2549 	.map_mr_sg = mlx4_ib_map_mr_sg,
2550 	.mmap = mlx4_ib_mmap,
2551 	.modify_cq = mlx4_ib_modify_cq,
2552 	.modify_device = mlx4_ib_modify_device,
2553 	.modify_port = mlx4_ib_modify_port,
2554 	.modify_qp = mlx4_ib_modify_qp,
2555 	.modify_srq = mlx4_ib_modify_srq,
2556 	.poll_cq = mlx4_ib_poll_cq,
2557 	.post_recv = mlx4_ib_post_recv,
2558 	.post_send = mlx4_ib_post_send,
2559 	.post_srq_recv = mlx4_ib_post_srq_recv,
2560 	.process_mad = mlx4_ib_process_mad,
2561 	.query_ah = mlx4_ib_query_ah,
2562 	.query_device = mlx4_ib_query_device,
2563 	.query_gid = mlx4_ib_query_gid,
2564 	.query_pkey = mlx4_ib_query_pkey,
2565 	.query_port = mlx4_ib_query_port,
2566 	.query_qp = mlx4_ib_query_qp,
2567 	.query_srq = mlx4_ib_query_srq,
2568 	.reg_user_mr = mlx4_ib_reg_user_mr,
2569 	.req_notify_cq = mlx4_ib_arm_cq,
2570 	.rereg_user_mr = mlx4_ib_rereg_user_mr,
2571 	.resize_cq = mlx4_ib_resize_cq,
2572 
2573 	INIT_RDMA_OBJ_SIZE(ib_ah, mlx4_ib_ah, ibah),
2574 	INIT_RDMA_OBJ_SIZE(ib_cq, mlx4_ib_cq, ibcq),
2575 	INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd),
2576 	INIT_RDMA_OBJ_SIZE(ib_qp, mlx4_ib_qp, ibqp),
2577 	INIT_RDMA_OBJ_SIZE(ib_srq, mlx4_ib_srq, ibsrq),
2578 	INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext),
2579 };
2580 
2581 static const struct ib_device_ops mlx4_ib_dev_wq_ops = {
2582 	.create_rwq_ind_table = mlx4_ib_create_rwq_ind_table,
2583 	.create_wq = mlx4_ib_create_wq,
2584 	.destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table,
2585 	.destroy_wq = mlx4_ib_destroy_wq,
2586 	.modify_wq = mlx4_ib_modify_wq,
2587 
2588 	INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx4_ib_rwq_ind_table,
2589 			   ib_rwq_ind_tbl),
2590 };
2591 
2592 static const struct ib_device_ops mlx4_ib_dev_mw_ops = {
2593 	.alloc_mw = mlx4_ib_alloc_mw,
2594 	.dealloc_mw = mlx4_ib_dealloc_mw,
2595 
2596 	INIT_RDMA_OBJ_SIZE(ib_mw, mlx4_ib_mw, ibmw),
2597 };
2598 
2599 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = {
2600 	.alloc_xrcd = mlx4_ib_alloc_xrcd,
2601 	.dealloc_xrcd = mlx4_ib_dealloc_xrcd,
2602 
2603 	INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx4_ib_xrcd, ibxrcd),
2604 };
2605 
2606 static const struct ib_device_ops mlx4_ib_dev_fs_ops = {
2607 	.create_flow = mlx4_ib_create_flow,
2608 	.destroy_flow = mlx4_ib_destroy_flow,
2609 };
2610 
mlx4_ib_probe(struct auxiliary_device * adev,const struct auxiliary_device_id * id)2611 static int mlx4_ib_probe(struct auxiliary_device *adev,
2612 			 const struct auxiliary_device_id *id)
2613 {
2614 	struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
2615 	struct mlx4_dev *dev = madev->mdev;
2616 	struct mlx4_ib_dev *ibdev;
2617 	int num_ports = 0;
2618 	int i, j;
2619 	int err;
2620 	struct mlx4_ib_iboe *iboe;
2621 	int ib_num_ports = 0;
2622 	int num_req_counters;
2623 	int allocated;
2624 	u32 counter_index;
2625 	struct counter_index *new_counter_index;
2626 
2627 	pr_info_once("%s", mlx4_ib_version);
2628 
2629 	num_ports = 0;
2630 	mlx4_foreach_ib_transport_port(i, dev)
2631 		num_ports++;
2632 
2633 	/* No point in registering a device with no ports... */
2634 	if (num_ports == 0)
2635 		return -ENODEV;
2636 
2637 	ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev);
2638 	if (!ibdev) {
2639 		dev_err(&dev->persist->pdev->dev,
2640 			"Device struct alloc failed\n");
2641 		return -ENOMEM;
2642 	}
2643 
2644 	iboe = &ibdev->iboe;
2645 
2646 	err = mlx4_pd_alloc(dev, &ibdev->priv_pdn);
2647 	if (err)
2648 		goto err_dealloc;
2649 
2650 	err = mlx4_uar_alloc(dev, &ibdev->priv_uar);
2651 	if (err)
2652 		goto err_pd;
2653 
2654 	ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2655 				 PAGE_SIZE);
2656 	if (!ibdev->uar_map) {
2657 		err = -ENOMEM;
2658 		goto err_uar;
2659 	}
2660 	MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2661 
2662 	ibdev->dev = dev;
2663 	ibdev->bond_next_port	= 0;
2664 
2665 	ibdev->ib_dev.node_type		= RDMA_NODE_IB_CA;
2666 	ibdev->ib_dev.local_dma_lkey	= dev->caps.reserved_lkey;
2667 	ibdev->num_ports		= num_ports;
2668 	ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2669 						1 : ibdev->num_ports;
2670 	ibdev->ib_dev.num_comp_vectors	= dev->caps.num_comp_vectors;
2671 	ibdev->ib_dev.dev.parent	= &dev->persist->pdev->dev;
2672 
2673 	ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops);
2674 
2675 	if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
2676 	    ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) ==
2677 	    IB_LINK_LAYER_ETHERNET) ||
2678 	    (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) ==
2679 	    IB_LINK_LAYER_ETHERNET)))
2680 		ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops);
2681 
2682 	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2683 	    dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2684 		ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops);
2685 
2686 	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2687 		ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops);
2688 	}
2689 
2690 	if (check_flow_steering_support(dev)) {
2691 		ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2692 		ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops);
2693 	}
2694 
2695 	if (!dev->caps.userspace_caps)
2696 		ibdev->ib_dev.ops.uverbs_abi_ver =
2697 			MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2698 
2699 	mlx4_ib_alloc_eqs(dev, ibdev);
2700 
2701 	spin_lock_init(&iboe->lock);
2702 
2703 	err = init_node_data(ibdev);
2704 	if (err)
2705 		goto err_map;
2706 	mlx4_init_sl2vl_tbl(ibdev);
2707 
2708 	for (i = 0; i < ibdev->num_ports; ++i) {
2709 		mutex_init(&ibdev->counters_table[i].mutex);
2710 		INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2711 		iboe->last_port_state[i] = IB_PORT_DOWN;
2712 	}
2713 
2714 	num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2715 	for (i = 0; i < num_req_counters; ++i) {
2716 		mutex_init(&ibdev->qp1_proxy_lock[i]);
2717 		allocated = 0;
2718 		if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2719 						IB_LINK_LAYER_ETHERNET) {
2720 			err = mlx4_counter_alloc(ibdev->dev, &counter_index,
2721 						 MLX4_RES_USAGE_DRIVER);
2722 			/* if failed to allocate a new counter, use default */
2723 			if (err)
2724 				counter_index =
2725 					mlx4_get_default_counter_index(dev,
2726 								       i + 1);
2727 			else
2728 				allocated = 1;
2729 		} else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2730 			counter_index = mlx4_get_default_counter_index(dev,
2731 								       i + 1);
2732 		}
2733 		new_counter_index = kmalloc(sizeof(*new_counter_index),
2734 					    GFP_KERNEL);
2735 		if (!new_counter_index) {
2736 			err = -ENOMEM;
2737 			if (allocated)
2738 				mlx4_counter_free(ibdev->dev, counter_index);
2739 			goto err_counter;
2740 		}
2741 		new_counter_index->index = counter_index;
2742 		new_counter_index->allocated = allocated;
2743 		list_add_tail(&new_counter_index->list,
2744 			      &ibdev->counters_table[i].counters_list);
2745 		ibdev->counters_table[i].default_counter = counter_index;
2746 		pr_info("counter index %d for port %d allocated %d\n",
2747 			counter_index, i + 1, allocated);
2748 	}
2749 	if (mlx4_is_bonded(dev))
2750 		for (i = 1; i < ibdev->num_ports ; ++i) {
2751 			new_counter_index =
2752 					kmalloc(sizeof(struct counter_index),
2753 						GFP_KERNEL);
2754 			if (!new_counter_index) {
2755 				err = -ENOMEM;
2756 				goto err_counter;
2757 			}
2758 			new_counter_index->index = counter_index;
2759 			new_counter_index->allocated = 0;
2760 			list_add_tail(&new_counter_index->list,
2761 				      &ibdev->counters_table[i].counters_list);
2762 			ibdev->counters_table[i].default_counter =
2763 								counter_index;
2764 		}
2765 
2766 	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2767 		ib_num_ports++;
2768 
2769 	spin_lock_init(&ibdev->sm_lock);
2770 	mutex_init(&ibdev->cap_mask_mutex);
2771 	INIT_LIST_HEAD(&ibdev->qp_list);
2772 	spin_lock_init(&ibdev->reset_flow_resource_lock);
2773 
2774 	if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2775 	    ib_num_ports) {
2776 		ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2777 		err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2778 					    MLX4_IB_UC_STEER_QPN_ALIGN,
2779 					    &ibdev->steer_qpn_base, 0,
2780 					    MLX4_RES_USAGE_DRIVER);
2781 		if (err)
2782 			goto err_counter;
2783 
2784 		ibdev->ib_uc_qpns_bitmap = bitmap_alloc(ibdev->steer_qpn_count,
2785 							GFP_KERNEL);
2786 		if (!ibdev->ib_uc_qpns_bitmap) {
2787 			err = -ENOMEM;
2788 			goto err_steer_qp_release;
2789 		}
2790 
2791 		if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2792 			bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2793 				    ibdev->steer_qpn_count);
2794 			err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2795 					dev, ibdev->steer_qpn_base,
2796 					ibdev->steer_qpn_base +
2797 					ibdev->steer_qpn_count - 1);
2798 			if (err)
2799 				goto err_steer_free_bitmap;
2800 		} else {
2801 			bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2802 				    ibdev->steer_qpn_count);
2803 		}
2804 	}
2805 
2806 	for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2807 		atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2808 
2809 	err = mlx4_ib_alloc_diag_counters(ibdev);
2810 	if (err)
2811 		goto err_steer_free_bitmap;
2812 
2813 	err = ib_register_device(&ibdev->ib_dev, "mlx4_%d",
2814 				 &dev->persist->pdev->dev);
2815 	if (err)
2816 		goto err_diag_counters;
2817 
2818 	err = mlx4_ib_mad_init(ibdev);
2819 	if (err)
2820 		goto err_reg;
2821 
2822 	err = mlx4_ib_init_sriov(ibdev);
2823 	if (err)
2824 		goto err_mad;
2825 
2826 	if (!iboe->nb.notifier_call) {
2827 		iboe->nb.notifier_call = mlx4_ib_netdev_event;
2828 		err = register_netdevice_notifier(&iboe->nb);
2829 		if (err) {
2830 			iboe->nb.notifier_call = NULL;
2831 			goto err_notif;
2832 		}
2833 	}
2834 	if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2835 		err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2836 		if (err)
2837 			goto err_notif;
2838 	}
2839 
2840 	ibdev->ib_active = true;
2841 	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2842 		devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2843 					 &ibdev->ib_dev);
2844 
2845 	if (mlx4_is_mfunc(ibdev->dev))
2846 		init_pkeys(ibdev);
2847 
2848 	/* create paravirt contexts for any VFs which are active */
2849 	if (mlx4_is_master(ibdev->dev)) {
2850 		for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2851 			if (j == mlx4_master_func_num(ibdev->dev))
2852 				continue;
2853 			if (mlx4_is_slave_active(ibdev->dev, j))
2854 				do_slave_init(ibdev, j, 1);
2855 		}
2856 	}
2857 
2858 	/* register mlx4 core notifier */
2859 	ibdev->mlx_nb.notifier_call = mlx4_ib_event;
2860 	err = mlx4_register_event_notifier(dev, &ibdev->mlx_nb);
2861 	WARN(err, "failed to register mlx4 event notifier (%d)", err);
2862 
2863 	auxiliary_set_drvdata(adev, ibdev);
2864 	return 0;
2865 
2866 err_notif:
2867 	if (ibdev->iboe.nb.notifier_call) {
2868 		if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2869 			pr_warn("failure unregistering notifier\n");
2870 		ibdev->iboe.nb.notifier_call = NULL;
2871 	}
2872 	flush_workqueue(wq);
2873 
2874 	mlx4_ib_close_sriov(ibdev);
2875 
2876 err_mad:
2877 	mlx4_ib_mad_cleanup(ibdev);
2878 
2879 err_reg:
2880 	ib_unregister_device(&ibdev->ib_dev);
2881 
2882 err_diag_counters:
2883 	mlx4_ib_diag_cleanup(ibdev);
2884 
2885 err_steer_free_bitmap:
2886 	bitmap_free(ibdev->ib_uc_qpns_bitmap);
2887 
2888 err_steer_qp_release:
2889 	mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2890 			      ibdev->steer_qpn_count);
2891 err_counter:
2892 	for (i = 0; i < ibdev->num_ports; ++i)
2893 		mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2894 
2895 err_map:
2896 	mlx4_ib_free_eqs(dev, ibdev);
2897 	iounmap(ibdev->uar_map);
2898 
2899 err_uar:
2900 	mlx4_uar_free(dev, &ibdev->priv_uar);
2901 
2902 err_pd:
2903 	mlx4_pd_free(dev, ibdev->priv_pdn);
2904 
2905 err_dealloc:
2906 	ib_dealloc_device(&ibdev->ib_dev);
2907 
2908 	return err;
2909 }
2910 
mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev * dev,int count,int * qpn)2911 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2912 {
2913 	int offset;
2914 
2915 	WARN_ON(!dev->ib_uc_qpns_bitmap);
2916 
2917 	offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2918 					 dev->steer_qpn_count,
2919 					 get_count_order(count));
2920 	if (offset < 0)
2921 		return offset;
2922 
2923 	*qpn = dev->steer_qpn_base + offset;
2924 	return 0;
2925 }
2926 
mlx4_ib_steer_qp_free(struct mlx4_ib_dev * dev,u32 qpn,int count)2927 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2928 {
2929 	if (!qpn ||
2930 	    dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2931 		return;
2932 
2933 	if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n",
2934 		 qpn, dev->steer_qpn_base))
2935 		/* not supposed to be here */
2936 		return;
2937 
2938 	bitmap_release_region(dev->ib_uc_qpns_bitmap,
2939 			      qpn - dev->steer_qpn_base,
2940 			      get_count_order(count));
2941 }
2942 
mlx4_ib_steer_qp_reg(struct mlx4_ib_dev * mdev,struct mlx4_ib_qp * mqp,int is_attach)2943 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2944 			 int is_attach)
2945 {
2946 	int err;
2947 	size_t flow_size;
2948 	struct ib_flow_attr *flow;
2949 	struct ib_flow_spec_ib *ib_spec;
2950 
2951 	if (is_attach) {
2952 		flow_size = sizeof(struct ib_flow_attr) +
2953 			    sizeof(struct ib_flow_spec_ib);
2954 		flow = kzalloc(flow_size, GFP_KERNEL);
2955 		if (!flow)
2956 			return -ENOMEM;
2957 		flow->port = mqp->port;
2958 		flow->num_of_specs = 1;
2959 		flow->size = flow_size;
2960 		ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2961 		ib_spec->type = IB_FLOW_SPEC_IB;
2962 		ib_spec->size = sizeof(struct ib_flow_spec_ib);
2963 		/* Add an empty rule for IB L2 */
2964 		memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2965 
2966 		err = __mlx4_ib_create_flow(&mqp->ibqp, flow, MLX4_DOMAIN_NIC,
2967 					    MLX4_FS_REGULAR, &mqp->reg_id);
2968 		kfree(flow);
2969 		return err;
2970 	}
2971 
2972 	return __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2973 }
2974 
mlx4_ib_remove(struct auxiliary_device * adev)2975 static void mlx4_ib_remove(struct auxiliary_device *adev)
2976 {
2977 	struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
2978 	struct mlx4_dev *dev = madev->mdev;
2979 	struct mlx4_ib_dev *ibdev = auxiliary_get_drvdata(adev);
2980 	int p;
2981 	int i;
2982 
2983 	mlx4_unregister_event_notifier(dev, &ibdev->mlx_nb);
2984 
2985 	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2986 		devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
2987 	ibdev->ib_active = false;
2988 	flush_workqueue(wq);
2989 
2990 	if (ibdev->iboe.nb.notifier_call) {
2991 		if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2992 			pr_warn("failure unregistering notifier\n");
2993 		ibdev->iboe.nb.notifier_call = NULL;
2994 	}
2995 
2996 	mlx4_ib_close_sriov(ibdev);
2997 	mlx4_ib_mad_cleanup(ibdev);
2998 	ib_unregister_device(&ibdev->ib_dev);
2999 	mlx4_ib_diag_cleanup(ibdev);
3000 
3001 	mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3002 			      ibdev->steer_qpn_count);
3003 	bitmap_free(ibdev->ib_uc_qpns_bitmap);
3004 
3005 	iounmap(ibdev->uar_map);
3006 	for (p = 0; p < ibdev->num_ports; ++p)
3007 		mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3008 
3009 	mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3010 		mlx4_CLOSE_PORT(dev, p);
3011 
3012 	mlx4_ib_free_eqs(dev, ibdev);
3013 
3014 	mlx4_uar_free(dev, &ibdev->priv_uar);
3015 	mlx4_pd_free(dev, ibdev->priv_pdn);
3016 	ib_dealloc_device(&ibdev->ib_dev);
3017 }
3018 
do_slave_init(struct mlx4_ib_dev * ibdev,int slave,int do_init)3019 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3020 {
3021 	struct mlx4_ib_demux_work **dm;
3022 	struct mlx4_dev *dev = ibdev->dev;
3023 	int i;
3024 	unsigned long flags;
3025 	struct mlx4_active_ports actv_ports;
3026 	unsigned int ports;
3027 	unsigned int first_port;
3028 
3029 	if (!mlx4_is_master(dev))
3030 		return;
3031 
3032 	actv_ports = mlx4_get_active_ports(dev, slave);
3033 	ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3034 	first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3035 
3036 	dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3037 	if (!dm)
3038 		return;
3039 
3040 	for (i = 0; i < ports; i++) {
3041 		dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3042 		if (!dm[i]) {
3043 			while (--i >= 0)
3044 				kfree(dm[i]);
3045 			goto out;
3046 		}
3047 		INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3048 		dm[i]->port = first_port + i + 1;
3049 		dm[i]->slave = slave;
3050 		dm[i]->do_init = do_init;
3051 		dm[i]->dev = ibdev;
3052 	}
3053 	/* initialize or tear down tunnel QPs for the slave */
3054 	spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3055 	if (!ibdev->sriov.is_going_down) {
3056 		for (i = 0; i < ports; i++)
3057 			queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3058 		spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3059 	} else {
3060 		spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3061 		for (i = 0; i < ports; i++)
3062 			kfree(dm[i]);
3063 	}
3064 out:
3065 	kfree(dm);
3066 	return;
3067 }
3068 
mlx4_ib_handle_catas_error(struct mlx4_ib_dev * ibdev)3069 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3070 {
3071 	struct mlx4_ib_qp *mqp;
3072 	unsigned long flags_qp;
3073 	unsigned long flags_cq;
3074 	struct mlx4_ib_cq *send_mcq, *recv_mcq;
3075 	struct list_head    cq_notify_list;
3076 	struct mlx4_cq *mcq;
3077 	unsigned long flags;
3078 
3079 	pr_warn("mlx4_ib_handle_catas_error was started\n");
3080 	INIT_LIST_HEAD(&cq_notify_list);
3081 
3082 	/* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3083 	spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3084 
3085 	list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3086 		spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3087 		if (mqp->sq.tail != mqp->sq.head) {
3088 			send_mcq = to_mcq(mqp->ibqp.send_cq);
3089 			spin_lock_irqsave(&send_mcq->lock, flags_cq);
3090 			if (send_mcq->mcq.comp &&
3091 			    mqp->ibqp.send_cq->comp_handler) {
3092 				if (!send_mcq->mcq.reset_notify_added) {
3093 					send_mcq->mcq.reset_notify_added = 1;
3094 					list_add_tail(&send_mcq->mcq.reset_notify,
3095 						      &cq_notify_list);
3096 				}
3097 			}
3098 			spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3099 		}
3100 		spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3101 		/* Now, handle the QP's receive queue */
3102 		spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3103 		/* no handling is needed for SRQ */
3104 		if (!mqp->ibqp.srq) {
3105 			if (mqp->rq.tail != mqp->rq.head) {
3106 				recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3107 				spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3108 				if (recv_mcq->mcq.comp &&
3109 				    mqp->ibqp.recv_cq->comp_handler) {
3110 					if (!recv_mcq->mcq.reset_notify_added) {
3111 						recv_mcq->mcq.reset_notify_added = 1;
3112 						list_add_tail(&recv_mcq->mcq.reset_notify,
3113 							      &cq_notify_list);
3114 					}
3115 				}
3116 				spin_unlock_irqrestore(&recv_mcq->lock,
3117 						       flags_cq);
3118 			}
3119 		}
3120 		spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3121 	}
3122 
3123 	list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3124 		mcq->comp(mcq);
3125 	}
3126 	spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3127 	pr_warn("mlx4_ib_handle_catas_error ended\n");
3128 }
3129 
handle_bonded_port_state_event(struct work_struct * work)3130 static void handle_bonded_port_state_event(struct work_struct *work)
3131 {
3132 	struct ib_event_work *ew =
3133 		container_of(work, struct ib_event_work, work);
3134 	struct mlx4_ib_dev *ibdev = ew->ib_dev;
3135 	enum ib_port_state bonded_port_state = IB_PORT_NOP;
3136 	int i;
3137 	struct ib_event ibev;
3138 
3139 	kfree(ew);
3140 	spin_lock_bh(&ibdev->iboe.lock);
3141 	for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3142 		struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3143 		enum ib_port_state curr_port_state;
3144 
3145 		if (!curr_netdev)
3146 			continue;
3147 
3148 		curr_port_state =
3149 			(netif_running(curr_netdev) &&
3150 			 netif_carrier_ok(curr_netdev)) ?
3151 			IB_PORT_ACTIVE : IB_PORT_DOWN;
3152 
3153 		bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3154 			curr_port_state : IB_PORT_ACTIVE;
3155 	}
3156 	spin_unlock_bh(&ibdev->iboe.lock);
3157 
3158 	ibev.device = &ibdev->ib_dev;
3159 	ibev.element.port_num = 1;
3160 	ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3161 		IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3162 
3163 	ib_dispatch_event(&ibev);
3164 }
3165 
mlx4_ib_sl2vl_update(struct mlx4_ib_dev * mdev,int port)3166 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3167 {
3168 	u64 sl2vl;
3169 	int err;
3170 
3171 	err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3172 	if (err) {
3173 		pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3174 		       port, err);
3175 		sl2vl = 0;
3176 	}
3177 	atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3178 }
3179 
ib_sl2vl_update_work(struct work_struct * work)3180 static void ib_sl2vl_update_work(struct work_struct *work)
3181 {
3182 	struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3183 	struct mlx4_ib_dev *mdev = ew->ib_dev;
3184 	int port = ew->port;
3185 
3186 	mlx4_ib_sl2vl_update(mdev, port);
3187 
3188 	kfree(ew);
3189 }
3190 
mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev * ibdev,int port)3191 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3192 				     int port)
3193 {
3194 	struct ib_event_work *ew;
3195 
3196 	ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3197 	if (ew) {
3198 		INIT_WORK(&ew->work, ib_sl2vl_update_work);
3199 		ew->port = port;
3200 		ew->ib_dev = ibdev;
3201 		queue_work(wq, &ew->work);
3202 	}
3203 }
3204 
mlx4_ib_event(struct notifier_block * this,unsigned long event,void * param)3205 static int mlx4_ib_event(struct notifier_block *this, unsigned long event,
3206 			 void *param)
3207 {
3208 	struct mlx4_ib_dev *ibdev =
3209 		container_of(this, struct mlx4_ib_dev, mlx_nb);
3210 	struct mlx4_dev *dev = ibdev->dev;
3211 	struct ib_event ibev;
3212 	struct mlx4_eqe *eqe = NULL;
3213 	struct ib_event_work *ew;
3214 	int p = 0;
3215 
3216 	if (mlx4_is_bonded(dev) &&
3217 	    ((event == MLX4_DEV_EVENT_PORT_UP) ||
3218 	    (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3219 		ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3220 		if (!ew)
3221 			return NOTIFY_DONE;
3222 		INIT_WORK(&ew->work, handle_bonded_port_state_event);
3223 		ew->ib_dev = ibdev;
3224 		queue_work(wq, &ew->work);
3225 		return NOTIFY_DONE;
3226 	}
3227 
3228 	switch (event) {
3229 	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3230 		break;
3231 	case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3232 		eqe = (struct mlx4_eqe *)param;
3233 		break;
3234 	default:
3235 		p = *(int *)param;
3236 		break;
3237 	}
3238 
3239 	switch (event) {
3240 	case MLX4_DEV_EVENT_PORT_UP:
3241 		if (p > ibdev->num_ports)
3242 			return NOTIFY_DONE;
3243 		if (!mlx4_is_slave(dev) &&
3244 		    rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3245 			IB_LINK_LAYER_INFINIBAND) {
3246 			if (mlx4_is_master(dev))
3247 				mlx4_ib_invalidate_all_guid_record(ibdev, p);
3248 			if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3249 			    !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3250 				mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3251 		}
3252 		ibev.event = IB_EVENT_PORT_ACTIVE;
3253 		break;
3254 
3255 	case MLX4_DEV_EVENT_PORT_DOWN:
3256 		if (p > ibdev->num_ports)
3257 			return NOTIFY_DONE;
3258 		ibev.event = IB_EVENT_PORT_ERR;
3259 		break;
3260 
3261 	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3262 		ibdev->ib_active = false;
3263 		ibev.event = IB_EVENT_DEVICE_FATAL;
3264 		mlx4_ib_handle_catas_error(ibdev);
3265 		break;
3266 
3267 	case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3268 		ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3269 		if (!ew)
3270 			return NOTIFY_DONE;
3271 
3272 		INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3273 		memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3274 		ew->ib_dev = ibdev;
3275 		/* need to queue only for port owner, which uses GEN_EQE */
3276 		if (mlx4_is_master(dev))
3277 			queue_work(wq, &ew->work);
3278 		else
3279 			handle_port_mgmt_change_event(&ew->work);
3280 		return NOTIFY_DONE;
3281 
3282 	case MLX4_DEV_EVENT_SLAVE_INIT:
3283 		/* here, p is the slave id */
3284 		do_slave_init(ibdev, p, 1);
3285 		if (mlx4_is_master(dev)) {
3286 			int i;
3287 
3288 			for (i = 1; i <= ibdev->num_ports; i++) {
3289 				if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3290 					== IB_LINK_LAYER_INFINIBAND)
3291 					mlx4_ib_slave_alias_guid_event(ibdev,
3292 								       p, i,
3293 								       1);
3294 			}
3295 		}
3296 		return NOTIFY_DONE;
3297 
3298 	case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3299 		if (mlx4_is_master(dev)) {
3300 			int i;
3301 
3302 			for (i = 1; i <= ibdev->num_ports; i++) {
3303 				if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3304 					== IB_LINK_LAYER_INFINIBAND)
3305 					mlx4_ib_slave_alias_guid_event(ibdev,
3306 								       p, i,
3307 								       0);
3308 			}
3309 		}
3310 		/* here, p is the slave id */
3311 		do_slave_init(ibdev, p, 0);
3312 		return NOTIFY_DONE;
3313 
3314 	default:
3315 		return NOTIFY_DONE;
3316 	}
3317 
3318 	ibev.device	      = &ibdev->ib_dev;
3319 	ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3320 
3321 	ib_dispatch_event(&ibev);
3322 	return NOTIFY_DONE;
3323 }
3324 
3325 static const struct auxiliary_device_id mlx4_ib_id_table[] = {
3326 	{ .name = MLX4_ADEV_NAME ".ib" },
3327 	{},
3328 };
3329 
3330 MODULE_DEVICE_TABLE(auxiliary, mlx4_ib_id_table);
3331 
3332 static struct mlx4_adrv mlx4_ib_adrv = {
3333 	.adrv = {
3334 		.name	= "ib",
3335 		.probe	= mlx4_ib_probe,
3336 		.remove	= mlx4_ib_remove,
3337 		.id_table = mlx4_ib_id_table,
3338 	},
3339 	.protocol	= MLX4_PROT_IB_IPV6,
3340 	.flags		= MLX4_INTFF_BONDING
3341 };
3342 
mlx4_ib_init(void)3343 static int __init mlx4_ib_init(void)
3344 {
3345 	int err;
3346 
3347 	wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3348 	if (!wq)
3349 		return -ENOMEM;
3350 
3351 	err = mlx4_ib_qp_event_init();
3352 	if (err)
3353 		goto clean_qp_event;
3354 
3355 	err = mlx4_ib_cm_init();
3356 	if (err)
3357 		goto clean_wq;
3358 
3359 	err = mlx4_ib_mcg_init();
3360 	if (err)
3361 		goto clean_cm;
3362 
3363 	err = mlx4_register_auxiliary_driver(&mlx4_ib_adrv);
3364 	if (err)
3365 		goto clean_mcg;
3366 
3367 	return 0;
3368 
3369 clean_mcg:
3370 	mlx4_ib_mcg_destroy();
3371 
3372 clean_cm:
3373 	mlx4_ib_cm_destroy();
3374 
3375 clean_wq:
3376 	mlx4_ib_qp_event_cleanup();
3377 
3378 clean_qp_event:
3379 	destroy_workqueue(wq);
3380 	return err;
3381 }
3382 
mlx4_ib_cleanup(void)3383 static void __exit mlx4_ib_cleanup(void)
3384 {
3385 	mlx4_unregister_auxiliary_driver(&mlx4_ib_adrv);
3386 	mlx4_ib_mcg_destroy();
3387 	mlx4_ib_cm_destroy();
3388 	mlx4_ib_qp_event_cleanup();
3389 	destroy_workqueue(wq);
3390 }
3391 
3392 module_init(mlx4_ib_init);
3393 module_exit(mlx4_ib_cleanup);
3394