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
  70MODULE_AUTHOR("Roland Dreier");
  71MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  72MODULE_LICENSE("Dual BSD/GPL");
 
  73
  74int mlx4_ib_sm_guid_assign = 0;
  75module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  76MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  77
  78static const char mlx4_ib_version[] =
  79	DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  80	DRV_VERSION "\n";
  81
  82static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  83static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device,
  84						    u32 port_num);
  85static int mlx4_ib_event(struct notifier_block *this, unsigned long event,
  86			 void *param);
  87
  88static struct workqueue_struct *wq;
  89
 
 
 
 
 
 
 
 
  90static 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
 115static 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
 126static 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
 160static 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
 193static 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
 238static 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
 248static 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
 255static 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
 346static 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
 399int 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
 435static 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	}
 639out:
 640	kfree(in_mad);
 641	kfree(out_mad);
 642
 643	return err;
 644}
 645
 646static enum rdma_link_layer
 647mlx4_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
 655static 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
 739out:
 740	kfree(in_mad);
 741	kfree(out_mad);
 742	return err;
 743}
 744
 745static 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
 751static 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);
 805out_unlock:
 806	spin_unlock_bh(&iboe->lock);
 807out:
 808	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 809	return err;
 810}
 811
 812int __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
 826static 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
 833int __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
 881out:
 882	if (clear)
 883		memset(gid->raw + 8, 0, 8);
 884	kfree(in_mad);
 885	kfree(out_mad);
 886	return err;
 887}
 888
 889static 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
 897static 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
 933out:
 934	kfree(in_mad);
 935	kfree(out_mad);
 936	return err;
 937}
 938
 939static 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
 958int __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
 985out:
 986	kfree(in_mad);
 987	kfree(out_mad);
 988	return err;
 989}
 990
 991static 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
 997static 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
1033static 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
1059static 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
1088out:
1089	mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1090	return err;
1091}
1092
1093static 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
1142static 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
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1149static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1150{
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1151}
1152
1153static 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
1198static 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
1215static 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
1221static 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
1250err3:
1251	ib_dealloc_pd(xrcd->pd);
1252err2:
1253	mlx4_xrcd_free(dev->dev, xrcd->xrcdn);
1254	return err;
 
 
1255}
1256
1257static 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
1265static 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
1288static 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
1304int 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
1326struct 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
1345static 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
1413struct 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};
1419static 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
1428static 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	}
1478out:
1479	return -1;
1480}
1481
1482static 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
1521static 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
1601static 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
1613static 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
1638static 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
1688static 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
1795err_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	}
1807err_free:
1808	kfree(mflow);
1809	return ERR_PTR(err);
1810}
1811
1812static 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
1836static 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
1886err_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);
1892err_malloc:
1893	kfree(ib_steering);
1894
1895	return err;
1896}
1897
1898static 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
1914static 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
1975static 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
2007out:
2008	kfree(in_mad);
2009	kfree(out_mad);
2010	return err;
2011}
2012
2013static 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}
2021static DEVICE_ATTR_RO(hca_type);
2022
2023static 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}
2031static DEVICE_ATTR_RO(hw_rev);
2032
2033static 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}
2041static DEVICE_ATTR_RO(board_id);
2042
2043static 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
2050static const struct attribute_group mlx4_attr_group = {
2051	.attrs = mlx4_class_attributes,
2052};
2053
2054struct diag_counter {
2055	const char *name;
2056	u32 offset;
2057};
2058
2059#define DIAG_COUNTER(_name, _offset)			\
2060	{ .name = #_name, .offset = _offset }
2061
2062static 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
2086static const struct diag_counter diag_ext[] = {
2087	DIAG_COUNTER(rq_num_dup, 0x130),
2088	DIAG_COUNTER(sq_num_to, 0x134),
2089};
2090
2091static const struct diag_counter diag_device_only[] = {
2092	DIAG_COUNTER(num_cqovf, 0x1A0),
2093	DIAG_COUNTER(rq_num_udsdprd, 0x118),
2094};
2095
2096static struct rdma_hw_stats *
2097mlx4_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
2109static struct rdma_hw_stats *
2110mlx4_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
2122static 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
2147static 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
2174err:
2175	kfree(*pdescs);
2176	return -ENOMEM;
2177}
2178
2179static 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
2206static 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
2212static 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
2217static 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
2254err_alloc:
2255	if (i) {
2256		kfree(diag[i - 1].descs);
2257		kfree(diag[i - 1].offset);
2258	}
2259
2260	return ret;
2261}
2262
2263static 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)
2274static 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
2320unlock:
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
2328static 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
2369iboe_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
2377static 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
2392static 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
2425static 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
2456static 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
2475static 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
2507static 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
2517static 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
2581static 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
2592static 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
2599static 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
2606static 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
2611static 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
2866err_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
2876err_mad:
2877	mlx4_ib_mad_cleanup(ibdev);
2878
2879err_reg:
2880	ib_unregister_device(&ibdev->ib_dev);
2881
2882err_diag_counters:
2883	mlx4_ib_diag_cleanup(ibdev);
2884
2885err_steer_free_bitmap:
2886	bitmap_free(ibdev->ib_uc_qpns_bitmap);
2887
2888err_steer_qp_release:
2889	mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2890			      ibdev->steer_qpn_count);
 
2891err_counter:
2892	for (i = 0; i < ibdev->num_ports; ++i)
2893		mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2894
2895err_map:
2896	mlx4_ib_free_eqs(dev, ibdev);
2897	iounmap(ibdev->uar_map);
2898
2899err_uar:
2900	mlx4_uar_free(dev, &ibdev->priv_uar);
2901
2902err_pd:
2903	mlx4_pd_free(dev, ibdev->priv_pdn);
2904
2905err_dealloc:
2906	ib_dealloc_device(&ibdev->ib_dev);
2907
2908	return err;
2909}
2910
2911int 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
2927void 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
2943int 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
2975static 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
3019static 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	}
3064out:
3065	kfree(dm);
3066	return;
3067}
3068
3069static 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
3130static 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
3166void 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
3180static 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
3191void 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
3205static 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
3325static const struct auxiliary_device_id mlx4_ib_id_table[] = {
3326	{ .name = MLX4_ADEV_NAME ".ib" },
3327	{},
3328};
3329
3330MODULE_DEVICE_TABLE(auxiliary, mlx4_ib_id_table);
3331
3332static 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
3343static 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
3369clean_mcg:
3370	mlx4_ib_mcg_destroy();
3371
3372clean_cm:
3373	mlx4_ib_cm_destroy();
3374
3375clean_wq:
3376	mlx4_ib_qp_event_cleanup();
3377
3378clean_qp_event:
3379	destroy_workqueue(wq);
3380	return err;
3381}
3382
3383static 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
3392module_init(mlx4_ib_init);
3393module_exit(mlx4_ib_cleanup);