main.c 33.2 KB
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/*
 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
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 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
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 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/module.h>
#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/rtnetlink.h>
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#include <linux/if_vlan.h>
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#include <rdma/ib_smi.h>
#include <rdma/ib_user_verbs.h>
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#include <rdma/ib_addr.h>
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#include <linux/mlx4/driver.h>
#include <linux/mlx4/cmd.h>

#include "mlx4_ib.h"
#include "user.h"

#define DRV_NAME	"mlx4_ib"
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#define DRV_VERSION	"1.0"
#define DRV_RELDATE	"April 4, 2008"
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MODULE_AUTHOR("Roland Dreier");
MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION);

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static const char mlx4_ib_version[] =
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	DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
	DRV_VERSION " (" DRV_RELDATE ")\n";

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struct update_gid_work {
	struct work_struct	work;
	union ib_gid		gids[128];
	struct mlx4_ib_dev     *dev;
	int			port;
};

static struct workqueue_struct *wq;

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static void init_query_mad(struct ib_smp *mad)
{
	mad->base_version  = 1;
	mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
	mad->class_version = 1;
	mad->method	   = IB_MGMT_METHOD_GET;
}

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static union ib_gid zgid;

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static int mlx4_ib_query_device(struct ib_device *ibdev,
				struct ib_device_attr *props)
{
	struct mlx4_ib_dev *dev = to_mdev(ibdev);
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memset(props, 0, sizeof *props);

	props->fw_ver = dev->dev->caps.fw_ver;
	props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
		IB_DEVICE_PORT_ACTIVE_EVENT		|
		IB_DEVICE_SYS_IMAGE_GUID		|
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		IB_DEVICE_RC_RNR_NAK_GEN		|
		IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
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	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
		props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
		props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
		props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
		props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
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	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
		props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
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	if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
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		props->device_cap_flags |= IB_DEVICE_UD_TSO;
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	if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
		props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
	if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
	    (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
	    (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
		props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
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	props->vendor_id	   = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
		0xffffff;
	props->vendor_part_id	   = be16_to_cpup((__be16 *) (out_mad->data + 30));
	props->hw_ver		   = be32_to_cpup((__be32 *) (out_mad->data + 32));
	memcpy(&props->sys_image_guid, out_mad->data +	4, 8);

	props->max_mr_size	   = ~0ull;
	props->page_size_cap	   = dev->dev->caps.page_size_cap;
	props->max_qp		   = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
	props->max_qp_wr	   = dev->dev->caps.max_wqes;
	props->max_sge		   = min(dev->dev->caps.max_sq_sg,
					 dev->dev->caps.max_rq_sg);
	props->max_cq		   = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
	props->max_cqe		   = dev->dev->caps.max_cqes;
	props->max_mr		   = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
	props->max_pd		   = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
	props->max_qp_rd_atom	   = dev->dev->caps.max_qp_dest_rdma;
	props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
	props->max_res_rd_atom	   = props->max_qp_rd_atom * props->max_qp;
	props->max_srq		   = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
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	props->max_srq_wr	   = dev->dev->caps.max_srq_wqes - 1;
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	props->max_srq_sge	   = dev->dev->caps.max_srq_sge;
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	props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
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	props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
	props->atomic_cap	   = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
		IB_ATOMIC_HCA : IB_ATOMIC_NONE;
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	props->masked_atomic_cap   = IB_ATOMIC_HCA;
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	props->max_pkeys	   = dev->dev->caps.pkey_table_len[1];
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	props->max_mcast_grp	   = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
	props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
	props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
					   props->max_mcast_grp;
	props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;

out:
	kfree(in_mad);
	kfree(out_mad);

	return err;
}

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static enum rdma_link_layer
mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
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{
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	struct mlx4_dev *dev = to_mdev(device)->dev;
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	return dev->caps.port_mask & (1 << (port_num - 1)) ?
		IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
}
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static int ib_link_query_port(struct ib_device *ibdev, u8 port,
			      struct ib_port_attr *props,
			      struct ib_smp *out_mad)
{
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	props->lid		= be16_to_cpup((__be16 *) (out_mad->data + 16));
	props->lmc		= out_mad->data[34] & 0x7;
	props->sm_lid		= be16_to_cpup((__be16 *) (out_mad->data + 18));
	props->sm_sl		= out_mad->data[36] & 0xf;
	props->state		= out_mad->data[32] & 0xf;
	props->phys_state	= out_mad->data[33] >> 4;
	props->port_cap_flags	= be32_to_cpup((__be32 *) (out_mad->data + 20));
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	props->gid_tbl_len	= to_mdev(ibdev)->dev->caps.gid_table_len[port];
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	props->max_msg_sz	= to_mdev(ibdev)->dev->caps.max_msg_sz;
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	props->pkey_tbl_len	= to_mdev(ibdev)->dev->caps.pkey_table_len[port];
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	props->bad_pkey_cntr	= be16_to_cpup((__be16 *) (out_mad->data + 46));
	props->qkey_viol_cntr	= be16_to_cpup((__be16 *) (out_mad->data + 48));
	props->active_width	= out_mad->data[31] & 0xf;
	props->active_speed	= out_mad->data[35] >> 4;
	props->max_mtu		= out_mad->data[41] & 0xf;
	props->active_mtu	= out_mad->data[36] >> 4;
	props->subnet_timeout	= out_mad->data[51] & 0x1f;
	props->max_vl_num	= out_mad->data[37] >> 4;
	props->init_type_reply	= out_mad->data[41] >> 4;

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	return 0;
}

static u8 state_to_phys_state(enum ib_port_state state)
{
	return state == IB_PORT_ACTIVE ? 5 : 3;
}

static int eth_link_query_port(struct ib_device *ibdev, u8 port,
			       struct ib_port_attr *props,
			       struct ib_smp *out_mad)
{
	struct mlx4_ib_iboe *iboe = &to_mdev(ibdev)->iboe;
	struct net_device *ndev;
	enum ib_mtu tmp;

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	props->active_width	= IB_WIDTH_1X;
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	props->active_speed	= 4;
	props->port_cap_flags	= IB_PORT_CM_SUP;
	props->gid_tbl_len	= to_mdev(ibdev)->dev->caps.gid_table_len[port];
	props->max_msg_sz	= to_mdev(ibdev)->dev->caps.max_msg_sz;
	props->pkey_tbl_len	= 1;
	props->bad_pkey_cntr	= be16_to_cpup((__be16 *) (out_mad->data + 46));
	props->qkey_viol_cntr	= be16_to_cpup((__be16 *) (out_mad->data + 48));
	props->max_mtu		= IB_MTU_2048;
	props->subnet_timeout	= 0;
	props->max_vl_num	= out_mad->data[37] >> 4;
	props->init_type_reply	= 0;
	props->state		= IB_PORT_DOWN;
	props->phys_state	= state_to_phys_state(props->state);
	props->active_mtu	= IB_MTU_256;
	spin_lock(&iboe->lock);
	ndev = iboe->netdevs[port - 1];
	if (!ndev)
		goto out;

	tmp = iboe_get_mtu(ndev->mtu);
	props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;

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	props->state		= (netif_running(ndev) && netif_carrier_ok(ndev)) ?
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					IB_PORT_ACTIVE : IB_PORT_DOWN;
	props->phys_state	= state_to_phys_state(props->state);

out:
	spin_unlock(&iboe->lock);
	return 0;
}

static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
			      struct ib_port_attr *props)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	memset(props, 0, sizeof *props);

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
	in_mad->attr_mod = cpu_to_be32(port);

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
		ib_link_query_port(ibdev, port, props, out_mad) :
		eth_link_query_port(ibdev, port, props, out_mad);

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out:
	kfree(in_mad);
	kfree(out_mad);

	return err;
}

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static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
			       union ib_gid *gid)
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{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
	in_mad->attr_mod = cpu_to_be32(port);

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(gid->raw, out_mad->data + 8, 8);

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
	in_mad->attr_mod = cpu_to_be32(index / 8);

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

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static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
			  union ib_gid *gid)
{
	struct mlx4_ib_dev *dev = to_mdev(ibdev);

	*gid = dev->iboe.gid_table[port - 1][index];

	return 0;
}

static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
			     union ib_gid *gid)
{
	if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
		return __mlx4_ib_query_gid(ibdev, port, index, gid);
	else
		return iboe_query_gid(ibdev, port, index, gid);
}

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static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
			      u16 *pkey)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
	in_mad->attr_mod = cpu_to_be32(index / 32);

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	*pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
				 struct ib_device_modify *props)
{
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	struct mlx4_cmd_mailbox *mailbox;

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	if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
		return -EOPNOTSUPP;

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	if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
		return 0;

	spin_lock(&to_mdev(ibdev)->sm_lock);
	memcpy(ibdev->node_desc, props->node_desc, 64);
	spin_unlock(&to_mdev(ibdev)->sm_lock);

	/*
	 * If possible, pass node desc to FW, so it can generate
	 * a 144 trap.  If cmd fails, just ignore.
	 */
	mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
	if (IS_ERR(mailbox))
		return 0;

	memset(mailbox->buf, 0, 256);
	memcpy(mailbox->buf, props->node_desc, 64);
	mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
		 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A);

	mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
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	return 0;
}

static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
			 u32 cap_mask)
{
	struct mlx4_cmd_mailbox *mailbox;
	int err;
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	u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
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	mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);

	memset(mailbox->buf, 0, 256);
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	if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
		*(u8 *) mailbox->buf	     = !!reset_qkey_viols << 6;
		((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
	} else {
		((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
		((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
	}
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	err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
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		       MLX4_CMD_TIME_CLASS_B);

	mlx4_free_cmd_mailbox(dev->dev, mailbox);
	return err;
}

static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
			       struct ib_port_modify *props)
{
	struct ib_port_attr attr;
	u32 cap_mask;
	int err;

	mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);

	err = mlx4_ib_query_port(ibdev, port, &attr);
	if (err)
		goto out;

	cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
		~props->clr_port_cap_mask;

	err = mlx4_SET_PORT(to_mdev(ibdev), port,
			    !!(mask & IB_PORT_RESET_QKEY_CNTR),
			    cap_mask);

out:
	mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
	return err;
}

static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
						  struct ib_udata *udata)
{
	struct mlx4_ib_dev *dev = to_mdev(ibdev);
	struct mlx4_ib_ucontext *context;
	struct mlx4_ib_alloc_ucontext_resp resp;
	int err;

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	if (!dev->ib_active)
		return ERR_PTR(-EAGAIN);

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	resp.qp_tab_size      = dev->dev->caps.num_qps;
	resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
	resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;

	context = kmalloc(sizeof *context, GFP_KERNEL);
	if (!context)
		return ERR_PTR(-ENOMEM);

	err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
	if (err) {
		kfree(context);
		return ERR_PTR(err);
	}

	INIT_LIST_HEAD(&context->db_page_list);
	mutex_init(&context->db_page_mutex);

	err = ib_copy_to_udata(udata, &resp, sizeof resp);
	if (err) {
		mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
		kfree(context);
		return ERR_PTR(-EFAULT);
	}

	return &context->ibucontext;
}

static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
{
	struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);

	mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
	kfree(context);

	return 0;
}

static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
	struct mlx4_ib_dev *dev = to_mdev(context->device);

	if (vma->vm_end - vma->vm_start != PAGE_SIZE)
		return -EINVAL;

	if (vma->vm_pgoff == 0) {
		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);

		if (io_remap_pfn_range(vma, vma->vm_start,
				       to_mucontext(context)->uar.pfn,
				       PAGE_SIZE, vma->vm_page_prot))
			return -EAGAIN;
	} else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
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		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568

		if (io_remap_pfn_range(vma, vma->vm_start,
				       to_mucontext(context)->uar.pfn +
				       dev->dev->caps.num_uars,
				       PAGE_SIZE, vma->vm_page_prot))
			return -EAGAIN;
	} else
		return -EINVAL;

	return 0;
}

static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
				      struct ib_ucontext *context,
				      struct ib_udata *udata)
{
	struct mlx4_ib_pd *pd;
	int err;

	pd = kmalloc(sizeof *pd, GFP_KERNEL);
	if (!pd)
		return ERR_PTR(-ENOMEM);

	err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
	if (err) {
		kfree(pd);
		return ERR_PTR(err);
	}

	if (context)
		if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
			mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
			kfree(pd);
			return ERR_PTR(-EFAULT);
		}

	return &pd->ibpd;
}

static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
{
	mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
	kfree(pd);

	return 0;
}

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static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
{
	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
	struct mlx4_ib_gid_entry *ge;

	ge = kzalloc(sizeof *ge, GFP_KERNEL);
	if (!ge)
		return -ENOMEM;

	ge->gid = *gid;
	if (mlx4_ib_add_mc(mdev, mqp, gid)) {
		ge->port = mqp->port;
		ge->added = 1;
	}

	mutex_lock(&mqp->mutex);
	list_add_tail(&ge->list, &mqp->gid_list);
	mutex_unlock(&mqp->mutex);

	return 0;
}

int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
		   union ib_gid *gid)
{
	u8 mac[6];
	struct net_device *ndev;
	int ret = 0;

	if (!mqp->port)
		return 0;

	spin_lock(&mdev->iboe.lock);
	ndev = mdev->iboe.netdevs[mqp->port - 1];
	if (ndev)
		dev_hold(ndev);
	spin_unlock(&mdev->iboe.lock);

	if (ndev) {
		rdma_get_mcast_mac((struct in6_addr *)gid, mac);
		rtnl_lock();
		dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
		ret = 1;
		rtnl_unlock();
		dev_put(ndev);
	}

	return ret;
}

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static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
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	int err;
	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
	struct mlx4_ib_qp *mqp = to_mqp(ibqp);

626 627
	err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
				    !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
628
				    MLX4_PROT_IB_IPV6);
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	if (err)
		return err;

	err = add_gid_entry(ibqp, gid);
	if (err)
		goto err_add;

	return 0;

err_add:
639
	mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
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	return err;
}

static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
{
	struct mlx4_ib_gid_entry *ge;
	struct mlx4_ib_gid_entry *tmp;
	struct mlx4_ib_gid_entry *ret = NULL;

	list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
		if (!memcmp(raw, ge->gid.raw, 16)) {
			ret = ge;
			break;
		}
	}

	return ret;
657 658 659 660
}

static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
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	int err;
	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
	u8 mac[6];
	struct net_device *ndev;
	struct mlx4_ib_gid_entry *ge;

	err = mlx4_multicast_detach(mdev->dev,
669
				    &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
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	if (err)
		return err;

	mutex_lock(&mqp->mutex);
	ge = find_gid_entry(mqp, gid->raw);
	if (ge) {
		spin_lock(&mdev->iboe.lock);
		ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
		if (ndev)
			dev_hold(ndev);
		spin_unlock(&mdev->iboe.lock);
		rdma_get_mcast_mac((struct in6_addr *)gid, mac);
		if (ndev) {
			rtnl_lock();
			dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
			rtnl_unlock();
			dev_put(ndev);
		}
		list_del(&ge->list);
		kfree(ge);
	} else
		printk(KERN_WARNING "could not find mgid entry\n");

	mutex_unlock(&mqp->mutex);

	return 0;
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}

static int init_node_data(struct mlx4_ib_dev *dev)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;

	err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(dev->ib_dev.node_desc, out_mad->data, 64);

	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;

	err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

732 733
static ssize_t show_hca(struct device *device, struct device_attribute *attr,
			char *buf)
734
{
735 736
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
737 738 739
	return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
}

740 741
static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
			   char *buf)
742
{
743 744
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
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	return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
		       (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
		       (int) dev->dev->caps.fw_ver & 0xffff);
}

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static ssize_t show_rev(struct device *device, struct device_attribute *attr,
			char *buf)
752
{
753 754
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
755 756 757
	return sprintf(buf, "%x\n", dev->dev->rev_id);
}

758 759
static ssize_t show_board(struct device *device, struct device_attribute *attr,
			  char *buf)
760
{
761 762 763 764
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
	return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
		       dev->dev->board_id);
765 766
}

767 768 769 770
static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
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772 773 774 775 776
static struct device_attribute *mlx4_class_attributes[] = {
	&dev_attr_hw_rev,
	&dev_attr_fw_ver,
	&dev_attr_hca_type,
	&dev_attr_board_id
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};

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static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
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{
	memcpy(eui, dev->dev_addr, 3);
	memcpy(eui + 5, dev->dev_addr + 3, 3);
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	if (vlan_id < 0x1000) {
		eui[3] = vlan_id >> 8;
		eui[4] = vlan_id & 0xff;
	} else {
		eui[3] = 0xff;
		eui[4] = 0xfe;
	}
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	eui[0] ^= 2;
}

static void update_gids_task(struct work_struct *work)
{
	struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
	struct mlx4_cmd_mailbox *mailbox;
	union ib_gid *gids;
	int err;
	struct mlx4_dev	*dev = gw->dev->dev;
	struct ib_event event;

	mailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(mailbox)) {
		printk(KERN_WARNING "update gid table failed %ld\n", PTR_ERR(mailbox));
		return;
	}

	gids = mailbox->buf;
	memcpy(gids, gw->gids, sizeof gw->gids);

	err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
		       1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B);
	if (err)
		printk(KERN_WARNING "set port command failed\n");
	else {
		memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
		event.device = &gw->dev->ib_dev;
		event.element.port_num = gw->port;
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		event.event    = IB_EVENT_GID_CHANGE;
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		ib_dispatch_event(&event);
	}

	mlx4_free_cmd_mailbox(dev, mailbox);
	kfree(gw);
}

static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
{
	struct net_device *ndev = dev->iboe.netdevs[port - 1];
	struct update_gid_work *work;
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	struct net_device *tmp;
	int i;
	u8 *hits;
	int ret;
	union ib_gid gid;
	int free;
	int found;
	int need_update = 0;
	u16 vid;
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	work = kzalloc(sizeof *work, GFP_ATOMIC);
	if (!work)
		return -ENOMEM;

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	hits = kzalloc(128, GFP_ATOMIC);
	if (!hits) {
		ret = -ENOMEM;
		goto out;
	}

851 852
	rcu_read_lock();
	for_each_netdev_rcu(&init_net, tmp) {
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		if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
			gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
			vid = rdma_vlan_dev_vlan_id(tmp);
			mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
			found = 0;
			free = -1;
			for (i = 0; i < 128; ++i) {
				if (free < 0 &&
				    !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
					free = i;
				if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
					hits[i] = 1;
					found = 1;
					break;
				}
			}

			if (!found) {
				if (tmp == ndev &&
				    (memcmp(&dev->iboe.gid_table[port - 1][0],
					    &gid, sizeof gid) ||
				     !memcmp(&dev->iboe.gid_table[port - 1][0],
					     &zgid, sizeof gid))) {
					dev->iboe.gid_table[port - 1][0] = gid;
					++need_update;
					hits[0] = 1;
				} else if (free >= 0) {
					dev->iboe.gid_table[port - 1][free] = gid;
					hits[free] = 1;
					++need_update;
				}
			}
		}
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	}
887
	rcu_read_unlock();
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	for (i = 0; i < 128; ++i)
		if (!hits[i]) {
			if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
				++need_update;
			dev->iboe.gid_table[port - 1][i] = zgid;
		}
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	if (need_update) {
		memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
		INIT_WORK(&work->work, update_gids_task);
		work->port = port;
		work->dev = dev;
		queue_work(wq, &work->work);
	} else
		kfree(work);
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	kfree(hits);
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	return 0;
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out:
	kfree(work);
	return ret;
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}

static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
{
	switch (event) {
	case NETDEV_UP:
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	case NETDEV_CHANGEADDR:
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		update_ipv6_gids(dev, port, 0);
		break;

	case NETDEV_DOWN:
		update_ipv6_gids(dev, port, 1);
		dev->iboe.netdevs[port - 1] = NULL;
	}
}

static void netdev_added(struct mlx4_ib_dev *dev, int port)
{
	update_ipv6_gids(dev, port, 0);
}

static void netdev_removed(struct mlx4_ib_dev *dev, int port)
{
	update_ipv6_gids(dev, port, 1);
}

static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
				void *ptr)
{
	struct net_device *dev = ptr;
	struct mlx4_ib_dev *ibdev;
	struct net_device *oldnd;
	struct mlx4_ib_iboe *iboe;
	int port;

	if (!net_eq(dev_net(dev), &init_net))
		return NOTIFY_DONE;

	ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
	iboe = &ibdev->iboe;

	spin_lock(&iboe->lock);
	mlx4_foreach_ib_transport_port(port, ibdev->dev) {
		oldnd = iboe->netdevs[port - 1];
		iboe->netdevs[port - 1] =
956
			mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
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		if (oldnd != iboe->netdevs[port - 1]) {
			if (iboe->netdevs[port - 1])
				netdev_added(ibdev, port);
			else
				netdev_removed(ibdev, port);
		}
	}

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	if (dev == iboe->netdevs[0] ||
	    (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
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		handle_en_event(ibdev, 1, event);
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	else if (dev == iboe->netdevs[1]
		 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
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		handle_en_event(ibdev, 2, event);

	spin_unlock(&iboe->lock);

	return NOTIFY_DONE;
}

977 978 979
static void *mlx4_ib_add(struct mlx4_dev *dev)
{
	struct mlx4_ib_dev *ibdev;
980
	int num_ports = 0;
981
	int i;
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	int err;
	struct mlx4_ib_iboe *iboe;
984

985
	printk_once(KERN_INFO "%s", mlx4_ib_version);
986

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	mlx4_foreach_ib_transport_port(i, dev)
988 989 990 991 992 993
		num_ports++;

	/* No point in registering a device with no ports... */
	if (num_ports == 0)
		return NULL;

994 995 996 997 998 999
	ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
	if (!ibdev) {
		dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
		return NULL;
	}

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	iboe = &ibdev->iboe;

1002 1003 1004 1005 1006 1007
	if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
		goto err_dealloc;

	if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
		goto err_pd;

1008 1009
	ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
				 PAGE_SIZE);
1010 1011
	if (!ibdev->uar_map)
		goto err_uar;
1012
	MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1013 1014 1015 1016 1017 1018

	ibdev->dev = dev;

	strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
	ibdev->ib_dev.owner		= THIS_MODULE;
	ibdev->ib_dev.node_type		= RDMA_NODE_IB_CA;
1019
	ibdev->ib_dev.local_dma_lkey	= dev->caps.reserved_lkey;
1020
	ibdev->num_ports		= num_ports;
1021
	ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1022
	ibdev->ib_dev.num_comp_vectors	= dev->caps.num_comp_vectors;
1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035
	ibdev->ib_dev.dma_device	= &dev->pdev->dev;

	ibdev->ib_dev.uverbs_abi_ver	= MLX4_IB_UVERBS_ABI_VERSION;
	ibdev->ib_dev.uverbs_cmd_mask	=
		(1ull << IB_USER_VERBS_CMD_GET_CONTEXT)		|
		(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)	|
		(1ull << IB_USER_VERBS_CMD_QUERY_PORT)		|
		(1ull << IB_USER_VERBS_CMD_ALLOC_PD)		|
		(1ull << IB_USER_VERBS_CMD_DEALLOC_PD)		|
		(1ull << IB_USER_VERBS_CMD_REG_MR)		|
		(1ull << IB_USER_VERBS_CMD_DEREG_MR)		|
		(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL)	|
		(1ull << IB_USER_VERBS_CMD_CREATE_CQ)		|
1036
		(1ull << IB_USER_VERBS_CMD_RESIZE_CQ)		|
1037 1038 1039
		(1ull << IB_USER_VERBS_CMD_DESTROY_CQ)		|
		(1ull << IB_USER_VERBS_CMD_CREATE_QP)		|
		(1ull << IB_USER_VERBS_CMD_MODIFY_QP)		|
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		(1ull << IB_USER_VERBS_CMD_QUERY_QP)		|
1041 1042 1043 1044 1045
		(1ull << IB_USER_VERBS_CMD_DESTROY_QP)		|
		(1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)	|
		(1ull << IB_USER_VERBS_CMD_DETACH_MCAST)	|
		(1ull << IB_USER_VERBS_CMD_CREATE_SRQ)		|
		(1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)		|
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		(1ull << IB_USER_VERBS_CMD_QUERY_SRQ)		|
1047 1048 1049 1050
		(1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);

	ibdev->ib_dev.query_device	= mlx4_ib_query_device;
	ibdev->ib_dev.query_port	= mlx4_ib_query_port;
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	ibdev->ib_dev.get_link_layer	= mlx4_ib_port_link_layer;
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065
	ibdev->ib_dev.query_gid		= mlx4_ib_query_gid;
	ibdev->ib_dev.query_pkey	= mlx4_ib_query_pkey;
	ibdev->ib_dev.modify_device	= mlx4_ib_modify_device;
	ibdev->ib_dev.modify_port	= mlx4_ib_modify_port;
	ibdev->ib_dev.alloc_ucontext	= mlx4_ib_alloc_ucontext;
	ibdev->ib_dev.dealloc_ucontext	= mlx4_ib_dealloc_ucontext;
	ibdev->ib_dev.mmap		= mlx4_ib_mmap;
	ibdev->ib_dev.alloc_pd		= mlx4_ib_alloc_pd;
	ibdev->ib_dev.dealloc_pd	= mlx4_ib_dealloc_pd;
	ibdev->ib_dev.create_ah		= mlx4_ib_create_ah;
	ibdev->ib_dev.query_ah		= mlx4_ib_query_ah;
	ibdev->ib_dev.destroy_ah	= mlx4_ib_destroy_ah;
	ibdev->ib_dev.create_srq	= mlx4_ib_create_srq;
	ibdev->ib_dev.modify_srq	= mlx4_ib_modify_srq;
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	ibdev->ib_dev.query_srq		= mlx4_ib_query_srq;
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	ibdev->ib_dev.destroy_srq	= mlx4_ib_destroy_srq;
	ibdev->ib_dev.post_srq_recv	= mlx4_ib_post_srq_recv;
	ibdev->ib_dev.create_qp		= mlx4_ib_create_qp;
	ibdev->ib_dev.modify_qp		= mlx4_ib_modify_qp;
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	ibdev->ib_dev.query_qp		= mlx4_ib_query_qp;
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	ibdev->ib_dev.destroy_qp	= mlx4_ib_destroy_qp;
	ibdev->ib_dev.post_send		= mlx4_ib_post_send;
	ibdev->ib_dev.post_recv		= mlx4_ib_post_recv;
	ibdev->ib_dev.create_cq		= mlx4_ib_create_cq;
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	ibdev->ib_dev.modify_cq		= mlx4_ib_modify_cq;
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	ibdev->ib_dev.resize_cq		= mlx4_ib_resize_cq;
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	ibdev->ib_dev.destroy_cq	= mlx4_ib_destroy_cq;
	ibdev->ib_dev.poll_cq		= mlx4_ib_poll_cq;
	ibdev->ib_dev.req_notify_cq	= mlx4_ib_arm_cq;
	ibdev->ib_dev.get_dma_mr	= mlx4_ib_get_dma_mr;
	ibdev->ib_dev.reg_user_mr	= mlx4_ib_reg_user_mr;
	ibdev->ib_dev.dereg_mr		= mlx4_ib_dereg_mr;
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	ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
	ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
	ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
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	ibdev->ib_dev.attach_mcast	= mlx4_ib_mcg_attach;
	ibdev->ib_dev.detach_mcast	= mlx4_ib_mcg_detach;
	ibdev->ib_dev.process_mad	= mlx4_ib_process_mad;

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	ibdev->ib_dev.alloc_fmr		= mlx4_ib_fmr_alloc;
	ibdev->ib_dev.map_phys_fmr	= mlx4_ib_map_phys_fmr;
	ibdev->ib_dev.unmap_fmr		= mlx4_ib_unmap_fmr;
	ibdev->ib_dev.dealloc_fmr	= mlx4_ib_fmr_dealloc;

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	spin_lock_init(&iboe->lock);

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	if (init_node_data(ibdev))
		goto err_map;

	spin_lock_init(&ibdev->sm_lock);
	mutex_init(&ibdev->cap_mask_mutex);

1104
	if (ib_register_device(&ibdev->ib_dev, NULL))
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		goto err_map;

	if (mlx4_ib_mad_init(ibdev))
		goto err_reg;

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	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
		iboe->nb.notifier_call = mlx4_ib_netdev_event;
		err = register_netdevice_notifier(&iboe->nb);
		if (err)
			goto err_reg;
	}

1117
	for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
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		if (device_create_file(&ibdev->ib_dev.dev,
				       mlx4_class_attributes[i]))
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			goto err_notif;
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	}

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	ibdev->ib_active = true;

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	return ibdev;

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err_notif:
	if (unregister_netdevice_notifier(&ibdev->iboe.nb))
		printk(KERN_WARNING "failure unregistering notifier\n");
	flush_workqueue(wq);

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err_reg:
	ib_unregister_device(&ibdev->ib_dev);

err_map:
	iounmap(ibdev->uar_map);

err_uar:
	mlx4_uar_free(dev, &ibdev->priv_uar);

err_pd:
	mlx4_pd_free(dev, ibdev->priv_pdn);

err_dealloc:
	ib_dealloc_device(&ibdev->ib_dev);

	return NULL;
}

static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
{
	struct mlx4_ib_dev *ibdev = ibdev_ptr;
	int p;

1155 1156
	mlx4_ib_mad_cleanup(ibdev);
	ib_unregister_device(&ibdev->ib_dev);
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	if (ibdev->iboe.nb.notifier_call) {
		if (unregister_netdevice_notifier(&ibdev->iboe.nb))
			printk(KERN_WARNING "failure unregistering notifier\n");
		ibdev->iboe.nb.notifier_call = NULL;
	}
	iounmap(ibdev->uar_map);
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	mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
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		mlx4_CLOSE_PORT(dev, p);

	mlx4_uar_free(dev, &ibdev->priv_uar);
	mlx4_pd_free(dev, ibdev->priv_pdn);
	ib_dealloc_device(&ibdev->ib_dev);
}

static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1173
			  enum mlx4_dev_event event, int port)
1174 1175
{
	struct ib_event ibev;
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	struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);

	if (port > ibdev->num_ports)
		return;
1180 1181

	switch (event) {
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	case MLX4_DEV_EVENT_PORT_UP:
		ibev.event = IB_EVENT_PORT_ACTIVE;
1184 1185
		break;

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	case MLX4_DEV_EVENT_PORT_DOWN:
		ibev.event = IB_EVENT_PORT_ERR;
		break;

	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1191
		ibdev->ib_active = false;
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		ibev.event = IB_EVENT_DEVICE_FATAL;
		break;

	default:
		return;
	}

	ibev.device	      = ibdev_ptr;
	ibev.element.port_num = port;

	ib_dispatch_event(&ibev);
}

static struct mlx4_interface mlx4_ib_interface = {
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	.add		= mlx4_ib_add,
	.remove		= mlx4_ib_remove,
	.event		= mlx4_ib_event,
1209
	.protocol	= MLX4_PROT_IB_IPV6
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};

static int __init mlx4_ib_init(void)
{
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	int err;

	wq = create_singlethread_workqueue("mlx4_ib");
	if (!wq)
		return -ENOMEM;

	err = mlx4_register_interface(&mlx4_ib_interface);
	if (err) {
		destroy_workqueue(wq);
		return err;
	}

	return 0;
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}

static void __exit mlx4_ib_cleanup(void)
{
	mlx4_unregister_interface(&mlx4_ib_interface);
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	destroy_workqueue(wq);
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}

module_init(mlx4_ib_init);
module_exit(mlx4_ib_cleanup);