main.c 65.6 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 <net/ipv6.h>
#include <net/addrconf.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"

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#define DRV_NAME	MLX4_IB_DRV_NAME
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#define DRV_VERSION	"2.2-1"
#define DRV_RELDATE	"Feb 2014"
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#define MLX4_IB_FLOW_MAX_PRIO 0xFFF
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#define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
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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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int mlx4_ib_sm_guid_assign = 1;
module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)");

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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;
};

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static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);

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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 check_flow_steering_support(struct mlx4_dev *dev)
{
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	int eth_num_ports = 0;
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	int ib_num_ports = 0;

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	int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;

	if (dmfs) {
		int i;
		mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
			eth_num_ports++;
		mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
			ib_num_ports++;
		dmfs &= (!ib_num_ports ||
			 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
			(!eth_num_ports ||
			 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
		if (ib_num_ports && mlx4_is_mfunc(dev)) {
			pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
			dmfs = 0;
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		}
	}
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	return dmfs;
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}

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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;

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	err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
			   1, NULL, NULL, in_mad, out_mad);
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	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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	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
		props->device_cap_flags |= IB_DEVICE_XRC;
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	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
		props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
	if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
		if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
			props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
		else
			props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
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	if (dev->steering_support ==  MLX4_STEERING_MODE_DEVICE_MANAGED)
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		props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
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	}
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	props->vendor_id	   = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
		0xffffff;
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	props->vendor_part_id	   = dev->dev->pdev->device;
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	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;
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	props->max_qp		   = dev->dev->quotas.qp;
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	props->max_qp_wr	   = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
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	props->max_sge		   = min(dev->dev->caps.max_sq_sg,
					 dev->dev->caps.max_rq_sg);
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	props->max_cq		   = dev->dev->quotas.cq;
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	props->max_cqe		   = dev->dev->caps.max_cqes;
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	props->max_mr		   = dev->dev->quotas.mpt;
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	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;
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	props->max_srq		   = dev->dev->quotas.srq;
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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   = props->atomic_cap;
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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;
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	props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
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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[port_num] == MLX4_PORT_TYPE_IB ?
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		IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
}
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static int ib_link_query_port(struct ib_device *ibdev, u8 port,
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			      struct ib_port_attr *props, int netw_view)
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{
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	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
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	int ext_active_speed;
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	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
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	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);

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	if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;

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

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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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	if (netw_view)
		props->gid_tbl_len = out_mad->data[50];
	else
		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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	/* Check if extended speeds (EDR/FDR/...) are supported */
	if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
		ext_active_speed = out_mad->data[62] >> 4;

		switch (ext_active_speed) {
		case 1:
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			props->active_speed = IB_SPEED_FDR;
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			break;
		case 2:
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			props->active_speed = IB_SPEED_EDR;
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			break;
		}
	}

	/* If reported active speed is QDR, check if is FDR-10 */
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	if (props->active_speed == IB_SPEED_QDR) {
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		init_query_mad(in_mad);
		in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
		in_mad->attr_mod = cpu_to_be32(port);

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		err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
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				   NULL, NULL, in_mad, out_mad);
		if (err)
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			goto out;
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		/* Checking LinkSpeedActive for FDR-10 */
		if (out_mad->data[15] & 0x1)
			props->active_speed = IB_SPEED_FDR10;
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	}
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	/* Avoid wrong speed value returned by FW if the IB link is down. */
	if (props->state == IB_PORT_DOWN)
		 props->active_speed = IB_SPEED_SDR;

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

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,
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			       struct ib_port_attr *props, int netw_view)
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{
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	struct mlx4_ib_dev *mdev = to_mdev(ibdev);
	struct mlx4_ib_iboe *iboe = &mdev->iboe;
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	struct net_device *ndev;
	enum ib_mtu tmp;
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	struct mlx4_cmd_mailbox *mailbox;
	int err = 0;

	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);
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	err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
			   MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
			   MLX4_CMD_WRAPPED);
	if (err)
		goto out;

	props->active_width	=  (((u8 *)mailbox->buf)[5] == 0x40) ?
						IB_WIDTH_4X : IB_WIDTH_1X;
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	props->active_speed	= IB_SPEED_QDR;
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	props->port_cap_flags	= IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
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	props->gid_tbl_len	= mdev->dev->caps.gid_table_len[port];
	props->max_msg_sz	= mdev->dev->caps.max_msg_sz;
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	props->pkey_tbl_len	= 1;
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	props->max_mtu		= IB_MTU_4096;
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	props->max_vl_num	= 2;
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	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)
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		goto out_unlock;
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	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);
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out_unlock:
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	spin_unlock(&iboe->lock);
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out:
	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
	return err;
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}

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int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
			 struct ib_port_attr *props, int netw_view)
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{
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	int err;
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	memset(props, 0, sizeof *props);

	err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
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		ib_link_query_port(ibdev, port, props, netw_view) :
				eth_link_query_port(ibdev, port, props, netw_view);
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	return err;
}

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static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
			      struct ib_port_attr *props)
{
	/* returns host view */
	return __mlx4_ib_query_port(ibdev, port, props, 0);
}

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int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
			union ib_gid *gid, int netw_view)
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{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;
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	struct mlx4_ib_dev *dev = to_mdev(ibdev);
	int clear = 0;
	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
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	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);

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	if (mlx4_is_mfunc(dev->dev) && netw_view)
		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;

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

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

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	if (mlx4_is_mfunc(dev->dev) && !netw_view) {
		if (index) {
			/* For any index > 0, return the null guid */
			err = 0;
			clear = 1;
			goto out;
		}
	}

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

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

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

out:
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	if (clear)
		memset(gid->raw + 8, 0, 8);
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	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)
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		return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
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	else
		return iboe_query_gid(ibdev, port, index, gid);
}

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int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
			 u16 *pkey, int netw_view)
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{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
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	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
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	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);

490 491 492 493 494
	if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;

	err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
			   in_mad, out_mad);
495 496 497 498 499 500 501 502 503 504 505
	if (err)
		goto out;

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

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

506 507 508 509 510
static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
{
	return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
}

511 512 513
static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
				 struct ib_device_modify *props)
{
514
	struct mlx4_cmd_mailbox *mailbox;
515
	unsigned long flags;
516

517 518 519
	if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
		return -EOPNOTSUPP;

520 521 522
	if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
		return 0;

523 524 525
	if (mlx4_is_slave(to_mdev(ibdev)->dev))
		return -EOPNOTSUPP;

526
	spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
527
	memcpy(ibdev->node_desc, props->node_desc, 64);
528
	spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
529 530 531 532 533 534 535 536 537 538 539

	/*
	 * 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;

	memcpy(mailbox->buf, props->node_desc, 64);
	mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
540
		 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
541 542

	mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
543 544 545 546 547 548 549 550 551

	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;
553 554 555 556 557

	mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);

558 559 560 561 562 563 564
	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,
567
		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
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	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;
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	struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
604 605 606
	struct mlx4_ib_alloc_ucontext_resp resp;
	int err;

607 608 609
	if (!dev->ib_active)
		return ERR_PTR(-EAGAIN);

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	if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
		resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
		resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
		resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
	} else {
		resp.dev_caps	      = dev->dev->caps.userspace_caps;
		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;
		resp.cqe_size	      = dev->dev->caps.cqe_size;
	}
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	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);

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	if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
		err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
	else
		err = ib_copy_to_udata(udata, &resp, sizeof(resp));

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	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) {
674
		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721

		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;
}

S
Sean Hefty 已提交
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static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
					  struct ib_ucontext *context,
					  struct ib_udata *udata)
{
	struct mlx4_ib_xrcd *xrcd;
	int err;

	if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
		return ERR_PTR(-ENOSYS);

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

	err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
	if (err)
		goto err1;

	xrcd->pd = ib_alloc_pd(ibdev);
	if (IS_ERR(xrcd->pd)) {
		err = PTR_ERR(xrcd->pd);
		goto err2;
	}

	xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
	if (IS_ERR(xrcd->cq)) {
		err = PTR_ERR(xrcd->cq);
		goto err3;
	}

	return &xrcd->ibxrcd;

err3:
	ib_dealloc_pd(xrcd->pd);
err2:
	mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
err1:
	kfree(xrcd);
	return ERR_PTR(err);
}

static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
{
	ib_destroy_cq(to_mxrcd(xrcd)->cq);
	ib_dealloc_pd(to_mxrcd(xrcd)->pd);
	mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
	kfree(xrcd);

	return 0;
}

E
Eli Cohen 已提交
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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)
{
	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) {
		ret = 1;
		dev_put(ndev);
	}

	return ret;
}

819 820 821 822 823 824
struct mlx4_ib_steering {
	struct list_head list;
	u64 reg_id;
	union ib_gid gid;
};

825
static int parse_flow_attr(struct mlx4_dev *dev,
826
			   u32 qp_num,
827 828 829 830 831 832 833 834 835 836 837 838 839 840 841
			   union ib_flow_spec *ib_spec,
			   struct _rule_hw *mlx4_spec)
{
	enum mlx4_net_trans_rule_id type;

	switch (ib_spec->type) {
	case IB_FLOW_SPEC_ETH:
		type = MLX4_NET_TRANS_RULE_ID_ETH;
		memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
		       ETH_ALEN);
		memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
		       ETH_ALEN);
		mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
		mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
		break;
842 843 844 845 846 847 848 849
	case IB_FLOW_SPEC_IB:
		type = MLX4_NET_TRANS_RULE_ID_IB;
		mlx4_spec->ib.l3_qpn =
			cpu_to_be32(qp_num);
		mlx4_spec->ib.qpn_mask =
			cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
		break;

850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880

	case IB_FLOW_SPEC_IPV4:
		type = MLX4_NET_TRANS_RULE_ID_IPV4;
		mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
		mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
		mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
		mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
		break;

	case IB_FLOW_SPEC_TCP:
	case IB_FLOW_SPEC_UDP:
		type = ib_spec->type == IB_FLOW_SPEC_TCP ?
					MLX4_NET_TRANS_RULE_ID_TCP :
					MLX4_NET_TRANS_RULE_ID_UDP;
		mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
		mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
		mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
		mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
		break;

	default:
		return -EINVAL;
	}
	if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
	    mlx4_hw_rule_sz(dev, type) < 0)
		return -EINVAL;
	mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
	mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
	return mlx4_hw_rule_sz(dev, type);
}

881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
struct default_rules {
	__u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
	__u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
	__u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
	__u8  link_layer;
};
static const struct default_rules default_table[] = {
	{
		.mandatory_fields = {IB_FLOW_SPEC_IPV4},
		.mandatory_not_fields = {IB_FLOW_SPEC_ETH},
		.rules_create_list = {IB_FLOW_SPEC_IB},
		.link_layer = IB_LINK_LAYER_INFINIBAND
	}
};

static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
					 struct ib_flow_attr *flow_attr)
{
	int i, j, k;
	void *ib_flow;
	const struct default_rules *pdefault_rules = default_table;
	u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);

	for (i = 0; i < sizeof(default_table)/sizeof(default_table[0]); i++,
	     pdefault_rules++) {
		__u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
		memset(&field_types, 0, sizeof(field_types));

		if (link_layer != pdefault_rules->link_layer)
			continue;

		ib_flow = flow_attr + 1;
		/* we assume the specs are sorted */
		for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
		     j < flow_attr->num_of_specs; k++) {
			union ib_flow_spec *current_flow =
				(union ib_flow_spec *)ib_flow;

			/* same layer but different type */
			if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
			     (pdefault_rules->mandatory_fields[k] &
			      IB_FLOW_SPEC_LAYER_MASK)) &&
			    (current_flow->type !=
			     pdefault_rules->mandatory_fields[k]))
				goto out;

			/* same layer, try match next one */
			if (current_flow->type ==
			    pdefault_rules->mandatory_fields[k]) {
				j++;
				ib_flow +=
					((union ib_flow_spec *)ib_flow)->size;
			}
		}

		ib_flow = flow_attr + 1;
		for (j = 0; j < flow_attr->num_of_specs;
		     j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
			for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
				/* same layer and same type */
				if (((union ib_flow_spec *)ib_flow)->type ==
				    pdefault_rules->mandatory_not_fields[k])
					goto out;

		return i;
	}
out:
	return -1;
}

static int __mlx4_ib_create_default_rules(
		struct mlx4_ib_dev *mdev,
		struct ib_qp *qp,
		const struct default_rules *pdefault_rules,
		struct _rule_hw *mlx4_spec) {
	int size = 0;
	int i;

	for (i = 0; i < sizeof(pdefault_rules->rules_create_list)/
			sizeof(pdefault_rules->rules_create_list[0]); i++) {
		int ret;
		union ib_flow_spec ib_spec;
		switch (pdefault_rules->rules_create_list[i]) {
		case 0:
			/* no rule */
			continue;
		case IB_FLOW_SPEC_IB:
			ib_spec.type = IB_FLOW_SPEC_IB;
			ib_spec.size = sizeof(struct ib_flow_spec_ib);

			break;
		default:
			/* invalid rule */
			return -EINVAL;
		}
		/* We must put empty rule, qpn is being ignored */
		ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
				      mlx4_spec);
		if (ret < 0) {
			pr_info("invalid parsing\n");
			return -EINVAL;
		}

		mlx4_spec = (void *)mlx4_spec + ret;
		size += ret;
	}
	return size;
}

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static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
			  int domain,
			  enum mlx4_net_trans_promisc_mode flow_type,
			  u64 *reg_id)
{
	int ret, i;
	int size = 0;
	void *ib_flow;
	struct mlx4_ib_dev *mdev = to_mdev(qp->device);
	struct mlx4_cmd_mailbox *mailbox;
	struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1001
	int default_flow;
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035

	static const u16 __mlx4_domain[] = {
		[IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
		[IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
		[IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
		[IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
	};

	if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
		pr_err("Invalid priority value %d\n", flow_attr->priority);
		return -EINVAL;
	}

	if (domain >= IB_FLOW_DOMAIN_NUM) {
		pr_err("Invalid domain value %d\n", domain);
		return -EINVAL;
	}

	if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
		return -EINVAL;

	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);
	ctrl = mailbox->buf;

	ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
				 flow_attr->priority);
	ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
	ctrl->port = flow_attr->port;
	ctrl->qpn = cpu_to_be32(qp->qp_num);

	ib_flow = flow_attr + 1;
	size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
	/* Add default flows */
	default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
	if (default_flow >= 0) {
		ret = __mlx4_ib_create_default_rules(
				mdev, qp, default_table + default_flow,
				mailbox->buf + size);
		if (ret < 0) {
			mlx4_free_cmd_mailbox(mdev->dev, mailbox);
			return -EINVAL;
		}
		size += ret;
	}
1048
	for (i = 0; i < flow_attr->num_of_specs; i++) {
1049 1050
		ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
				      mailbox->buf + size);
1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156
		if (ret < 0) {
			mlx4_free_cmd_mailbox(mdev->dev, mailbox);
			return -EINVAL;
		}
		ib_flow += ((union ib_flow_spec *) ib_flow)->size;
		size += ret;
	}

	ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
			   MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
			   MLX4_CMD_NATIVE);
	if (ret == -ENOMEM)
		pr_err("mcg table is full. Fail to register network rule.\n");
	else if (ret == -ENXIO)
		pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
	else if (ret)
		pr_err("Invalid argumant. Fail to register network rule.\n");

	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
	return ret;
}

static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
{
	int err;
	err = mlx4_cmd(dev, reg_id, 0, 0,
		       MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
		       MLX4_CMD_NATIVE);
	if (err)
		pr_err("Fail to detach network rule. registration id = 0x%llx\n",
		       reg_id);
	return err;
}

static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
				    struct ib_flow_attr *flow_attr,
				    int domain)
{
	int err = 0, i = 0;
	struct mlx4_ib_flow *mflow;
	enum mlx4_net_trans_promisc_mode type[2];

	memset(type, 0, sizeof(type));

	mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
	if (!mflow) {
		err = -ENOMEM;
		goto err_free;
	}

	switch (flow_attr->type) {
	case IB_FLOW_ATTR_NORMAL:
		type[0] = MLX4_FS_REGULAR;
		break;

	case IB_FLOW_ATTR_ALL_DEFAULT:
		type[0] = MLX4_FS_ALL_DEFAULT;
		break;

	case IB_FLOW_ATTR_MC_DEFAULT:
		type[0] = MLX4_FS_MC_DEFAULT;
		break;

	case IB_FLOW_ATTR_SNIFFER:
		type[0] = MLX4_FS_UC_SNIFFER;
		type[1] = MLX4_FS_MC_SNIFFER;
		break;

	default:
		err = -EINVAL;
		goto err_free;
	}

	while (i < ARRAY_SIZE(type) && type[i]) {
		err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
					    &mflow->reg_id[i]);
		if (err)
			goto err_free;
		i++;
	}

	return &mflow->ibflow;

err_free:
	kfree(mflow);
	return ERR_PTR(err);
}

static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
{
	int err, ret = 0;
	int i = 0;
	struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
	struct mlx4_ib_flow *mflow = to_mflow(flow_id);

	while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) {
		err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]);
		if (err)
			ret = err;
		i++;
	}

	kfree(mflow);
	return ret;
}

1157 1158
static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
E
Eli Cohen 已提交
1159 1160 1161
	int err;
	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1162 1163
	u64 reg_id;
	struct mlx4_ib_steering *ib_steering = NULL;
1164 1165
	enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
		MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
1166 1167 1168 1169 1170 1171 1172

	if (mdev->dev->caps.steering_mode ==
	    MLX4_STEERING_MODE_DEVICE_MANAGED) {
		ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
		if (!ib_steering)
			return -ENOMEM;
	}
E
Eli Cohen 已提交
1173

1174 1175 1176
	err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
				    !!(mqp->flags &
				       MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1177
				    prot, &reg_id);
E
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1178
	if (err)
1179
		goto err_malloc;
E
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1180 1181 1182 1183 1184

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

1185 1186 1187 1188 1189 1190 1191
	if (ib_steering) {
		memcpy(ib_steering->gid.raw, gid->raw, 16);
		ib_steering->reg_id = reg_id;
		mutex_lock(&mqp->mutex);
		list_add(&ib_steering->list, &mqp->steering_rules);
		mutex_unlock(&mqp->mutex);
	}
E
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1192 1193 1194
	return 0;

err_add:
1195
	mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1196
			      prot, reg_id);
1197 1198 1199
err_malloc:
	kfree(ib_steering);

E
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1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216
	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;
1217 1218 1219 1220
}

static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
E
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1221 1222 1223 1224 1225
	int err;
	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
	struct net_device *ndev;
	struct mlx4_ib_gid_entry *ge;
1226
	u64 reg_id = 0;
1227 1228
	enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
		MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248

	if (mdev->dev->caps.steering_mode ==
	    MLX4_STEERING_MODE_DEVICE_MANAGED) {
		struct mlx4_ib_steering *ib_steering;

		mutex_lock(&mqp->mutex);
		list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
			if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
				list_del(&ib_steering->list);
				break;
			}
		}
		mutex_unlock(&mqp->mutex);
		if (&ib_steering->list == &mqp->steering_rules) {
			pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
			return -EINVAL;
		}
		reg_id = ib_steering->reg_id;
		kfree(ib_steering);
	}
E
Eli Cohen 已提交
1249

1250
	err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1251
				    prot, reg_id);
E
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1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262
	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);
1263
		if (ndev)
E
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1264 1265 1266 1267
			dev_put(ndev);
		list_del(&ge->list);
		kfree(ge);
	} else
1268
		pr_warn("could not find mgid entry\n");
E
Eli Cohen 已提交
1269 1270 1271 1272

	mutex_unlock(&mqp->mutex);

	return 0;
1273 1274 1275 1276 1277 1278
}

static int init_node_data(struct mlx4_ib_dev *dev)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
1279
	int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1280 1281 1282 1283 1284 1285 1286 1287 1288
	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;
1289 1290
	if (mlx4_is_master(dev->dev))
		mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1291

1292
	err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1293 1294 1295 1296 1297 1298 1299
	if (err)
		goto out;

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

	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;

1300
	err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1301 1302 1303
	if (err)
		goto out;

1304
	dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1305 1306 1307 1308 1309 1310 1311 1312
	memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);

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

1313 1314
static ssize_t show_hca(struct device *device, struct device_attribute *attr,
			char *buf)
1315
{
1316 1317
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1318 1319 1320
	return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
}

1321 1322
static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
			   char *buf)
1323
{
1324 1325
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1326 1327 1328 1329 1330
	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);
}

1331 1332
static ssize_t show_rev(struct device *device, struct device_attribute *attr,
			char *buf)
1333
{
1334 1335
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1336 1337 1338
	return sprintf(buf, "%x\n", dev->dev->rev_id);
}

1339 1340
static ssize_t show_board(struct device *device, struct device_attribute *attr,
			  char *buf)
1341
{
1342 1343 1344 1345
	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);
1346 1347
}

1348 1349 1350 1351
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);
1352

1353 1354 1355 1356 1357
static struct device_attribute *mlx4_class_attributes[] = {
	&dev_attr_hw_rev,
	&dev_attr_fw_ver,
	&dev_attr_hca_type,
	&dev_attr_board_id
1358 1359
};

1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374
static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id,
				     struct net_device *dev)
{
	memcpy(eui, dev->dev_addr, 3);
	memcpy(eui + 5, dev->dev_addr + 3, 3);
	if (vlan_id < 0x1000) {
		eui[3] = vlan_id >> 8;
		eui[4] = vlan_id & 0xff;
	} else {
		eui[3] = 0xff;
		eui[4] = 0xfe;
	}
	eui[0] ^= 2;
}

E
Eli Cohen 已提交
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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;

	mailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(mailbox)) {
1385
		pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
E
Eli Cohen 已提交
1386 1387 1388 1389 1390 1391 1392
		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,
1393
		       1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1394
		       MLX4_CMD_WRAPPED);
E
Eli Cohen 已提交
1395
	if (err)
1396
		pr_warn("set port command failed\n");
1397
	else
1398
		mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
E
Eli Cohen 已提交
1399 1400 1401 1402 1403

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

1404
static void reset_gids_task(struct work_struct *work)
E
Eli Cohen 已提交
1405
{
1406 1407 1408 1409 1410 1411
	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;
E
Eli Cohen 已提交
1412

1413 1414 1415 1416 1417
	mailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(mailbox)) {
		pr_warn("reset gid table failed\n");
		goto free;
	}
E
Eli Cohen 已提交
1418

1419 1420 1421
	gids = mailbox->buf;
	memcpy(gids, gw->gids, sizeof(gw->gids));

1422 1423 1424 1425 1426 1427 1428 1429 1430 1431
	if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) ==
				    IB_LINK_LAYER_ETHERNET) {
		err = mlx4_cmd(dev, mailbox->dma,
			       MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
			       1, MLX4_CMD_SET_PORT,
			       MLX4_CMD_TIME_CLASS_B,
			       MLX4_CMD_WRAPPED);
		if (err)
			pr_warn(KERN_WARNING
				"set port %d command failed\n", gw->port);
E
Eli Cohen 已提交
1432 1433
	}

1434 1435 1436 1437
	mlx4_free_cmd_mailbox(dev, mailbox);
free:
	kfree(gw);
}
E
Eli Cohen 已提交
1438

1439
static int update_gid_table(struct mlx4_ib_dev *dev, int port,
1440 1441
			    union ib_gid *gid, int clear,
			    int default_gid)
1442 1443 1444 1445 1446 1447 1448 1449
{
	struct update_gid_work *work;
	int i;
	int need_update = 0;
	int free = -1;
	int found = -1;
	int max_gids;

1450 1451 1452 1453 1454 1455
	if (default_gid) {
		free = 0;
	} else {
		max_gids = dev->dev->caps.gid_table_len[port];
		for (i = 1; i < max_gids; ++i) {
			if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid,
1456
				    sizeof(*gid)))
1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474
				found = i;

			if (clear) {
				if (found >= 0) {
					need_update = 1;
					dev->iboe.gid_table[port - 1][found] =
						zgid;
					break;
				}
			} else {
				if (found >= 0)
					break;

				if (free < 0 &&
				    !memcmp(&dev->iboe.gid_table[port - 1][i],
					    &zgid, sizeof(*gid)))
					free = i;
			}
E
Eli Cohen 已提交
1475
		}
E
Eli Cohen 已提交
1476
	}
E
Eli Cohen 已提交
1477

1478 1479 1480 1481
	if (found == -1 && !clear && free >= 0) {
		dev->iboe.gid_table[port - 1][free] = *gid;
		need_update = 1;
	}
E
Eli Cohen 已提交
1482

1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494
	if (!need_update)
		return 0;

	work = kzalloc(sizeof(*work), GFP_ATOMIC);
	if (!work)
		return -ENOMEM;

	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);
E
Eli Cohen 已提交
1495 1496

	return 0;
1497
}
E
Eli Cohen 已提交
1498

1499
static void mlx4_make_default_gid(struct  net_device *dev, union ib_gid *gid)
1500
{
1501 1502 1503 1504
	gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
	mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev);
}

1505

1506
static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port)
1507 1508 1509 1510 1511 1512
{
	struct update_gid_work *work;

	work = kzalloc(sizeof(*work), GFP_ATOMIC);
	if (!work)
		return -ENOMEM;
1513 1514

	memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids));
1515 1516 1517
	memset(work->gids, 0, sizeof(work->gids));
	INIT_WORK(&work->work, reset_gids_task);
	work->dev = dev;
1518
	work->port = port;
1519 1520
	queue_work(wq, &work->work);
	return 0;
E
Eli Cohen 已提交
1521 1522
}

1523 1524
static int mlx4_ib_addr_event(int event, struct net_device *event_netdev,
			      struct mlx4_ib_dev *ibdev, union ib_gid *gid)
E
Eli Cohen 已提交
1525
{
1526 1527 1528 1529 1530
	struct mlx4_ib_iboe *iboe;
	int port = 0;
	struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ?
				rdma_vlan_dev_real_dev(event_netdev) :
				event_netdev;
1531 1532 1533 1534 1535 1536
	union ib_gid default_gid;

	mlx4_make_default_gid(real_dev, &default_gid);

	if (!memcmp(gid, &default_gid, sizeof(*gid)))
		return 0;
1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554

	if (event != NETDEV_DOWN && event != NETDEV_UP)
		return 0;

	if ((real_dev != event_netdev) &&
	    (event == NETDEV_DOWN) &&
	    rdma_link_local_addr((struct in6_addr *)gid))
		return 0;

	iboe = &ibdev->iboe;
	spin_lock(&iboe->lock);

	for (port = 1; port <= MLX4_MAX_PORTS; ++port)
		if ((netif_is_bond_master(real_dev) &&
		     (real_dev == iboe->masters[port - 1])) ||
		     (!netif_is_bond_master(real_dev) &&
		     (real_dev == iboe->netdevs[port - 1])))
			update_gid_table(ibdev, port, gid,
1555
					 event == NETDEV_DOWN, 0);
1556 1557 1558

	spin_unlock(&iboe->lock);
	return 0;
E
Eli Cohen 已提交
1559 1560 1561

}

1562 1563
static u8 mlx4_ib_get_dev_port(struct net_device *dev,
			       struct mlx4_ib_dev *ibdev)
E
Eli Cohen 已提交
1564
{
1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582
	u8 port = 0;
	struct mlx4_ib_iboe *iboe;
	struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ?
				rdma_vlan_dev_real_dev(dev) : dev;

	iboe = &ibdev->iboe;

	for (port = 1; port <= MLX4_MAX_PORTS; ++port)
		if ((netif_is_bond_master(real_dev) &&
		     (real_dev == iboe->masters[port - 1])) ||
		     (!netif_is_bond_master(real_dev) &&
		     (real_dev == iboe->netdevs[port - 1])))
			break;

	if ((port == 0) || (port > MLX4_MAX_PORTS))
		return 0;
	else
		return port;
E
Eli Cohen 已提交
1583 1584
}

1585 1586
static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event,
				void *ptr)
E
Eli Cohen 已提交
1587
{
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598
	struct mlx4_ib_dev *ibdev;
	struct in_ifaddr *ifa = ptr;
	union ib_gid gid;
	struct net_device *event_netdev = ifa->ifa_dev->dev;

	ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);

	ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet);

	mlx4_ib_addr_event(event, event_netdev, ibdev, &gid);
	return NOTIFY_DONE;
E
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1599 1600
}

1601
#if IS_ENABLED(CONFIG_IPV6)
1602
static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event,
E
Eli Cohen 已提交
1603 1604 1605
				void *ptr)
{
	struct mlx4_ib_dev *ibdev;
1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620
	struct inet6_ifaddr *ifa = ptr;
	union  ib_gid *gid = (union ib_gid *)&ifa->addr;
	struct net_device *event_netdev = ifa->idev->dev;

	ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6);

	mlx4_ib_addr_event(event, event_netdev, ibdev, gid);
	return NOTIFY_DONE;
}
#endif

static void mlx4_ib_get_dev_addr(struct net_device *dev,
				 struct mlx4_ib_dev *ibdev, u8 port)
{
	struct in_device *in_dev;
1621
#if IS_ENABLED(CONFIG_IPV6)
1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638
	struct inet6_dev *in6_dev;
	union ib_gid  *pgid;
	struct inet6_ifaddr *ifp;
#endif
	union ib_gid gid;


	if ((port == 0) || (port > MLX4_MAX_PORTS))
		return;

	/* IPv4 gids */
	in_dev = in_dev_get(dev);
	if (in_dev) {
		for_ifa(in_dev) {
			/*ifa->ifa_address;*/
			ipv6_addr_set_v4mapped(ifa->ifa_address,
					       (struct in6_addr *)&gid);
1639
			update_gid_table(ibdev, port, &gid, 0, 0);
1640 1641 1642 1643
		}
		endfor_ifa(in_dev);
		in_dev_put(in_dev);
	}
1644
#if IS_ENABLED(CONFIG_IPV6)
1645 1646 1647 1648 1649 1650
	/* IPv6 gids */
	in6_dev = in6_dev_get(dev);
	if (in6_dev) {
		read_lock_bh(&in6_dev->lock);
		list_for_each_entry(ifp, &in6_dev->addr_list, if_list) {
			pgid = (union ib_gid *)&ifp->addr;
1651
			update_gid_table(ibdev, port, pgid, 0, 0);
1652 1653 1654 1655 1656 1657 1658
		}
		read_unlock_bh(&in6_dev->lock);
		in6_dev_put(in6_dev);
	}
#endif
}

1659 1660 1661 1662 1663 1664 1665 1666
static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev,
				 struct  net_device *dev, u8 port)
{
	union ib_gid gid;
	mlx4_make_default_gid(dev, &gid);
	update_gid_table(ibdev, port, &gid, 0, 1);
}

1667 1668 1669
static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev)
{
	struct	net_device *dev;
1670
	struct mlx4_ib_iboe *iboe = &ibdev->iboe;
1671
	int i;
1672

1673 1674 1675
	for (i = 1; i <= ibdev->num_ports; ++i)
		if (reset_gid_table(ibdev, i))
			return -1;
1676 1677

	read_lock(&dev_base_lock);
1678
	spin_lock(&iboe->lock);
1679 1680 1681 1682 1683 1684 1685

	for_each_netdev(&init_net, dev) {
		u8 port = mlx4_ib_get_dev_port(dev, ibdev);
		if (port)
			mlx4_ib_get_dev_addr(dev, ibdev, port);
	}

1686
	spin_unlock(&iboe->lock);
1687 1688 1689 1690 1691 1692 1693
	read_unlock(&dev_base_lock);

	return 0;
}

static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev)
{
E
Eli Cohen 已提交
1694 1695 1696 1697 1698 1699 1700
	struct mlx4_ib_iboe *iboe;
	int port;

	iboe = &ibdev->iboe;

	spin_lock(&iboe->lock);
	mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1701
		enum ib_port_state	port_state = IB_PORT_NOP;
1702
		struct net_device *old_master = iboe->masters[port - 1];
1703
		struct net_device *curr_netdev;
1704
		struct net_device *curr_master;
1705

E
Eli Cohen 已提交
1706
		iboe->netdevs[port - 1] =
1707
			mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1708 1709 1710
		if (iboe->netdevs[port - 1])
			mlx4_ib_set_default_gid(ibdev,
						iboe->netdevs[port - 1], port);
1711
		curr_netdev = iboe->netdevs[port - 1];
1712 1713 1714 1715 1716

		if (iboe->netdevs[port - 1] &&
		    netif_is_bond_slave(iboe->netdevs[port - 1])) {
			iboe->masters[port - 1] = netdev_master_upper_dev_get(
				iboe->netdevs[port - 1]);
1717 1718
		} else {
			iboe->masters[port - 1] = NULL;
E
Eli Cohen 已提交
1719
		}
1720
		curr_master = iboe->masters[port - 1];
E
Eli Cohen 已提交
1721

1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736
		if (curr_netdev) {
			port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ?
						IB_PORT_ACTIVE : IB_PORT_DOWN;
			mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
		} else {
			reset_gid_table(ibdev, port);
		}
		/* if using bonding/team and a slave port is down, we don't the bond IP
		 * based gids in the table since flows that select port by gid may get
		 * the down port.
		 */
		if (curr_master && (port_state == IB_PORT_DOWN)) {
			reset_gid_table(ibdev, port);
			mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
		}
1737
		/* if bonding is used it is possible that we add it to masters
1738 1739 1740 1741 1742 1743
		 * only after IP address is assigned to the net bonding
		 * interface.
		*/
		if (curr_master && (old_master != curr_master)) {
			reset_gid_table(ibdev, port);
			mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1744
			mlx4_ib_get_dev_addr(curr_master, ibdev, port);
1745 1746 1747 1748 1749 1750 1751
		}

		if (!curr_master && (old_master != curr_master)) {
			reset_gid_table(ibdev, port);
			mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
			mlx4_ib_get_dev_addr(curr_netdev, ibdev, port);
		}
1752
	}
E
Eli Cohen 已提交
1753 1754

	spin_unlock(&iboe->lock);
1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767
}

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

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

	ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
	mlx4_ib_scan_netdevs(ibdev);
E
Eli Cohen 已提交
1768 1769 1770 1771

	return NOTIFY_DONE;
}

1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803
static void init_pkeys(struct mlx4_ib_dev *ibdev)
{
	int port;
	int slave;
	int i;

	if (mlx4_is_master(ibdev->dev)) {
		for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) {
			for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
				for (i = 0;
				     i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
				     ++i) {
					ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
					/* master has the identity virt2phys pkey mapping */
						(slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
							ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
					mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
							     ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
				}
			}
		}
		/* initialize pkey cache */
		for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
			for (i = 0;
			     i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
			     ++i)
				ibdev->pkeys.phys_pkey_cache[port-1][i] =
					(i) ? 0 : 0xFFFF;
		}
	}
}

1804 1805 1806 1807 1808 1809 1810 1811
static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
{
	char name[32];
	int eq_per_port = 0;
	int added_eqs = 0;
	int total_eqs = 0;
	int i, j, eq;

1812 1813 1814
	/* Legacy mode or comp_pool is not large enough */
	if (dev->caps.comp_pool == 0 ||
	    dev->caps.num_ports > dev->caps.comp_pool)
1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838
		return;

	eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
					dev->caps.num_ports);

	/* Init eq table */
	added_eqs = 0;
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
		added_eqs += eq_per_port;

	total_eqs = dev->caps.num_comp_vectors + added_eqs;

	ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
	if (!ibdev->eq_table)
		return;

	ibdev->eq_added = added_eqs;

	eq = 0;
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
		for (j = 0; j < eq_per_port; j++) {
			sprintf(name, "mlx4-ib-%d-%d@%s",
				i, j, dev->pdev->bus->name);
			/* Set IRQ for specific name (per ring) */
1839 1840
			if (mlx4_assign_eq(dev, name, NULL,
					   &ibdev->eq_table[eq])) {
1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860
				/* Use legacy (same as mlx4_en driver) */
				pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
				ibdev->eq_table[eq] =
					(eq % dev->caps.num_comp_vectors);
			}
			eq++;
		}
	}

	/* Fill the reset of the vector with legacy EQ */
	for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
		ibdev->eq_table[eq++] = i;

	/* Advertise the new number of EQs to clients */
	ibdev->ib_dev.num_comp_vectors = total_eqs;
}

static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
{
	int i;
1861 1862 1863 1864

	/* no additional eqs were added */
	if (!ibdev->eq_table)
		return;
1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879

	/* Reset the advertised EQ number */
	ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;

	/* Free only the added eqs */
	for (i = 0; i < ibdev->eq_added; i++) {
		/* Don't free legacy eqs if used */
		if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
			continue;
		mlx4_release_eq(dev, ibdev->eq_table[i]);
	}

	kfree(ibdev->eq_table);
}

1880 1881 1882
static void *mlx4_ib_add(struct mlx4_dev *dev)
{
	struct mlx4_ib_dev *ibdev;
1883
	int num_ports = 0;
1884
	int i, j;
E
Eli Cohen 已提交
1885 1886
	int err;
	struct mlx4_ib_iboe *iboe;
1887
	int ib_num_ports = 0;
1888

1889
	pr_info_once("%s", mlx4_ib_version);
1890

1891
	num_ports = 0;
E
Eli Cohen 已提交
1892
	mlx4_foreach_ib_transport_port(i, dev)
1893 1894 1895 1896 1897 1898
		num_ports++;

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

1899 1900 1901 1902 1903 1904
	ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
	if (!ibdev) {
		dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
		return NULL;
	}

E
Eli Cohen 已提交
1905 1906
	iboe = &ibdev->iboe;

1907 1908 1909 1910 1911 1912
	if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
		goto err_dealloc;

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

1913 1914
	ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
				 PAGE_SIZE);
1915 1916
	if (!ibdev->uar_map)
		goto err_uar;
1917
	MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1918 1919 1920 1921 1922 1923

	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;
1924
	ibdev->ib_dev.local_dma_lkey	= dev->caps.reserved_lkey;
1925
	ibdev->num_ports		= num_ports;
1926
	ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1927
	ibdev->ib_dev.num_comp_vectors	= dev->caps.num_comp_vectors;
1928 1929
	ibdev->ib_dev.dma_device	= &dev->pdev->dev;

O
Or Gerlitz 已提交
1930 1931 1932 1933 1934
	if (dev->caps.userspace_caps)
		ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
	else
		ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;

1935 1936 1937 1938 1939 1940 1941 1942 1943 1944
	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)		|
1945
		(1ull << IB_USER_VERBS_CMD_RESIZE_CQ)		|
1946 1947 1948
		(1ull << IB_USER_VERBS_CMD_DESTROY_CQ)		|
		(1ull << IB_USER_VERBS_CMD_CREATE_QP)		|
		(1ull << IB_USER_VERBS_CMD_MODIFY_QP)		|
J
Jack Morgenstein 已提交
1949
		(1ull << IB_USER_VERBS_CMD_QUERY_QP)		|
1950 1951 1952 1953 1954
		(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)		|
J
Jack Morgenstein 已提交
1955
		(1ull << IB_USER_VERBS_CMD_QUERY_SRQ)		|
S
Sean Hefty 已提交
1956
		(1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)		|
1957 1958
		(1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)		|
		(1ull << IB_USER_VERBS_CMD_OPEN_QP);
1959 1960 1961

	ibdev->ib_dev.query_device	= mlx4_ib_query_device;
	ibdev->ib_dev.query_port	= mlx4_ib_query_port;
E
Eli Cohen 已提交
1962
	ibdev->ib_dev.get_link_layer	= mlx4_ib_port_link_layer;
1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976
	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;
J
Jack Morgenstein 已提交
1977
	ibdev->ib_dev.query_srq		= mlx4_ib_query_srq;
1978 1979 1980 1981
	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;
J
Jack Morgenstein 已提交
1982
	ibdev->ib_dev.query_qp		= mlx4_ib_query_qp;
1983 1984 1985 1986
	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;
1987
	ibdev->ib_dev.modify_cq		= mlx4_ib_modify_cq;
1988
	ibdev->ib_dev.resize_cq		= mlx4_ib_resize_cq;
1989 1990 1991 1992 1993 1994
	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;
1995 1996 1997
	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;
1998 1999 2000 2001
	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;

2002 2003 2004 2005 2006 2007
	if (!mlx4_is_slave(ibdev->dev)) {
		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;
	}
J
Jack Morgenstein 已提交
2008

S
Shani Michaeli 已提交
2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
	    dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
		ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
		ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
		ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;

		ibdev->ib_dev.uverbs_cmd_mask |=
			(1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
			(1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
	}

S
Sean Hefty 已提交
2020 2021 2022 2023 2024 2025 2026 2027
	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
		ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
		ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
		ibdev->ib_dev.uverbs_cmd_mask |=
			(1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
			(1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
	}

2028
	if (check_flow_steering_support(dev)) {
2029
		ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2030 2031 2032
		ibdev->ib_dev.create_flow	= mlx4_ib_create_flow;
		ibdev->ib_dev.destroy_flow	= mlx4_ib_destroy_flow;

2033 2034 2035
		ibdev->ib_dev.uverbs_ex_cmd_mask	|=
			(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
			(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2036 2037
	}

2038 2039
	mlx4_ib_alloc_eqs(dev, ibdev);

E
Eli Cohen 已提交
2040 2041
	spin_lock_init(&iboe->lock);

2042 2043 2044
	if (init_node_data(ibdev))
		goto err_map;

2045 2046 2047 2048 2049 2050 2051 2052 2053 2054
	for (i = 0; i < ibdev->num_ports; ++i) {
		if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
						IB_LINK_LAYER_ETHERNET) {
			err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
			if (err)
				ibdev->counters[i] = -1;
		} else
				ibdev->counters[i] = -1;
	}

2055 2056 2057
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
		ib_num_ports++;

2058 2059 2060
	spin_lock_init(&ibdev->sm_lock);
	mutex_init(&ibdev->cap_mask_mutex);

2061 2062
	if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
	    ib_num_ports) {
2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088
		ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
		err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
					    MLX4_IB_UC_STEER_QPN_ALIGN,
					    &ibdev->steer_qpn_base);
		if (err)
			goto err_counter;

		ibdev->ib_uc_qpns_bitmap =
			kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
				sizeof(long),
				GFP_KERNEL);
		if (!ibdev->ib_uc_qpns_bitmap) {
			dev_err(&dev->pdev->dev, "bit map alloc failed\n");
			goto err_steer_qp_release;
		}

		bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);

		err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
				dev, ibdev->steer_qpn_base,
				ibdev->steer_qpn_base +
				ibdev->steer_qpn_count - 1);
		if (err)
			goto err_steer_free_bitmap;
	}

2089
	if (ib_register_device(&ibdev->ib_dev, NULL))
2090
		goto err_steer_free_bitmap;
2091 2092 2093 2094

	if (mlx4_ib_mad_init(ibdev))
		goto err_reg;

2095 2096 2097
	if (mlx4_ib_init_sriov(ibdev))
		goto err_mad;

2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114
	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) {
		if (!iboe->nb.notifier_call) {
			iboe->nb.notifier_call = mlx4_ib_netdev_event;
			err = register_netdevice_notifier(&iboe->nb);
			if (err) {
				iboe->nb.notifier_call = NULL;
				goto err_notif;
			}
		}
		if (!iboe->nb_inet.notifier_call) {
			iboe->nb_inet.notifier_call = mlx4_ib_inet_event;
			err = register_inetaddr_notifier(&iboe->nb_inet);
			if (err) {
				iboe->nb_inet.notifier_call = NULL;
				goto err_notif;
			}
		}
2115
#if IS_ENABLED(CONFIG_IPV6)
2116 2117 2118 2119 2120 2121 2122 2123 2124
		if (!iboe->nb_inet6.notifier_call) {
			iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event;
			err = register_inet6addr_notifier(&iboe->nb_inet6);
			if (err) {
				iboe->nb_inet6.notifier_call = NULL;
				goto err_notif;
			}
		}
#endif
2125 2126
		for (i = 1 ; i <= ibdev->num_ports ; ++i)
			reset_gid_table(ibdev, i);
2127
		rtnl_lock();
2128
		mlx4_ib_scan_netdevs(ibdev);
2129
		rtnl_unlock();
2130
		mlx4_ib_init_gid_table(ibdev);
E
Eli Cohen 已提交
2131 2132
	}

2133
	for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2134
		if (device_create_file(&ibdev->ib_dev.dev,
2135
				       mlx4_class_attributes[j]))
E
Eli Cohen 已提交
2136
			goto err_notif;
2137 2138
	}

2139 2140
	ibdev->ib_active = true;

2141 2142 2143
	if (mlx4_is_mfunc(ibdev->dev))
		init_pkeys(ibdev);

2144 2145 2146 2147 2148 2149 2150 2151 2152
	/* create paravirt contexts for any VFs which are active */
	if (mlx4_is_master(ibdev->dev)) {
		for (j = 0; j < MLX4_MFUNC_MAX; j++) {
			if (j == mlx4_master_func_num(ibdev->dev))
				continue;
			if (mlx4_is_slave_active(ibdev->dev, j))
				do_slave_init(ibdev, j, 1);
		}
	}
2153 2154
	return ibdev;

E
Eli Cohen 已提交
2155
err_notif:
2156 2157 2158 2159 2160 2161 2162 2163 2164 2165
	if (ibdev->iboe.nb.notifier_call) {
		if (unregister_netdevice_notifier(&ibdev->iboe.nb))
			pr_warn("failure unregistering notifier\n");
		ibdev->iboe.nb.notifier_call = NULL;
	}
	if (ibdev->iboe.nb_inet.notifier_call) {
		if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
			pr_warn("failure unregistering notifier\n");
		ibdev->iboe.nb_inet.notifier_call = NULL;
	}
2166
#if IS_ENABLED(CONFIG_IPV6)
2167 2168 2169 2170 2171 2172
	if (ibdev->iboe.nb_inet6.notifier_call) {
		if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
			pr_warn("failure unregistering notifier\n");
		ibdev->iboe.nb_inet6.notifier_call = NULL;
	}
#endif
E
Eli Cohen 已提交
2173 2174
	flush_workqueue(wq);

2175 2176 2177 2178 2179
	mlx4_ib_close_sriov(ibdev);

err_mad:
	mlx4_ib_mad_cleanup(ibdev);

2180 2181 2182
err_reg:
	ib_unregister_device(&ibdev->ib_dev);

2183 2184 2185 2186 2187 2188 2189
err_steer_free_bitmap:
	kfree(ibdev->ib_uc_qpns_bitmap);

err_steer_qp_release:
	if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
		mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
				      ibdev->steer_qpn_count);
2190 2191
err_counter:
	for (; i; --i)
2192 2193
		if (ibdev->counters[i - 1] != -1)
			mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
2194

2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209
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;
}

2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272
int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
{
	int offset;

	WARN_ON(!dev->ib_uc_qpns_bitmap);

	offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
					 dev->steer_qpn_count,
					 get_count_order(count));
	if (offset < 0)
		return offset;

	*qpn = dev->steer_qpn_base + offset;
	return 0;
}

void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
{
	if (!qpn ||
	    dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
		return;

	BUG_ON(qpn < dev->steer_qpn_base);

	bitmap_release_region(dev->ib_uc_qpns_bitmap,
			      qpn - dev->steer_qpn_base,
			      get_count_order(count));
}

int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
			 int is_attach)
{
	int err;
	size_t flow_size;
	struct ib_flow_attr *flow = NULL;
	struct ib_flow_spec_ib *ib_spec;

	if (is_attach) {
		flow_size = sizeof(struct ib_flow_attr) +
			    sizeof(struct ib_flow_spec_ib);
		flow = kzalloc(flow_size, GFP_KERNEL);
		if (!flow)
			return -ENOMEM;
		flow->port = mqp->port;
		flow->num_of_specs = 1;
		flow->size = flow_size;
		ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
		ib_spec->type = IB_FLOW_SPEC_IB;
		ib_spec->size = sizeof(struct ib_flow_spec_ib);
		/* Add an empty rule for IB L2 */
		memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));

		err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
					    IB_FLOW_DOMAIN_NIC,
					    MLX4_FS_REGULAR,
					    &mqp->reg_id);
	} else {
		err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
	}
	kfree(flow);
	return err;
}

2273 2274 2275 2276 2277
static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
{
	struct mlx4_ib_dev *ibdev = ibdev_ptr;
	int p;

2278
	mlx4_ib_close_sriov(ibdev);
2279 2280
	mlx4_ib_mad_cleanup(ibdev);
	ib_unregister_device(&ibdev->ib_dev);
E
Eli Cohen 已提交
2281 2282
	if (ibdev->iboe.nb.notifier_call) {
		if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2283
			pr_warn("failure unregistering notifier\n");
E
Eli Cohen 已提交
2284 2285
		ibdev->iboe.nb.notifier_call = NULL;
	}
2286 2287 2288 2289 2290 2291 2292

	if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
		mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
				      ibdev->steer_qpn_count);
		kfree(ibdev->ib_uc_qpns_bitmap);
	}

2293 2294 2295 2296 2297
	if (ibdev->iboe.nb_inet.notifier_call) {
		if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
			pr_warn("failure unregistering notifier\n");
		ibdev->iboe.nb_inet.notifier_call = NULL;
	}
2298
#if IS_ENABLED(CONFIG_IPV6)
2299 2300 2301 2302 2303 2304
	if (ibdev->iboe.nb_inet6.notifier_call) {
		if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
			pr_warn("failure unregistering notifier\n");
		ibdev->iboe.nb_inet6.notifier_call = NULL;
	}
#endif
2305

E
Eli Cohen 已提交
2306
	iounmap(ibdev->uar_map);
2307
	for (p = 0; p < ibdev->num_ports; ++p)
2308 2309
		if (ibdev->counters[p] != -1)
			mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
E
Eli Cohen 已提交
2310
	mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2311 2312
		mlx4_CLOSE_PORT(dev, p);

2313 2314
	mlx4_ib_free_eqs(dev, ibdev);

2315 2316 2317 2318 2319
	mlx4_uar_free(dev, &ibdev->priv_uar);
	mlx4_pd_free(dev, ibdev->priv_pdn);
	ib_dealloc_device(&ibdev->ib_dev);
}

2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359
static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
{
	struct mlx4_ib_demux_work **dm = NULL;
	struct mlx4_dev *dev = ibdev->dev;
	int i;
	unsigned long flags;

	if (!mlx4_is_master(dev))
		return;

	dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC);
	if (!dm) {
		pr_err("failed to allocate memory for tunneling qp update\n");
		goto out;
	}

	for (i = 0; i < dev->caps.num_ports; i++) {
		dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
		if (!dm[i]) {
			pr_err("failed to allocate memory for tunneling qp update work struct\n");
			for (i = 0; i < dev->caps.num_ports; i++) {
				if (dm[i])
					kfree(dm[i]);
			}
			goto out;
		}
	}
	/* initialize or tear down tunnel QPs for the slave */
	for (i = 0; i < dev->caps.num_ports; i++) {
		INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
		dm[i]->port = i + 1;
		dm[i]->slave = slave;
		dm[i]->do_init = do_init;
		dm[i]->dev = ibdev;
		spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
		if (!ibdev->sriov.is_going_down)
			queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
		spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
	}
out:
2360
	kfree(dm);
2361 2362 2363
	return;
}

2364
static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2365
			  enum mlx4_dev_event event, unsigned long param)
2366 2367
{
	struct ib_event ibev;
2368
	struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2369 2370
	struct mlx4_eqe *eqe = NULL;
	struct ib_event_work *ew;
2371
	int p = 0;
2372 2373 2374 2375

	if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
		eqe = (struct mlx4_eqe *)param;
	else
2376
		p = (int) param;
2377 2378

	switch (event) {
2379
	case MLX4_DEV_EVENT_PORT_UP:
2380 2381
		if (p > ibdev->num_ports)
			return;
2382 2383 2384 2385 2386
		if (mlx4_is_master(dev) &&
		    rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
			IB_LINK_LAYER_INFINIBAND) {
			mlx4_ib_invalidate_all_guid_record(ibdev, p);
		}
2387
		ibev.event = IB_EVENT_PORT_ACTIVE;
2388 2389
		break;

2390
	case MLX4_DEV_EVENT_PORT_DOWN:
2391 2392
		if (p > ibdev->num_ports)
			return;
2393 2394 2395 2396
		ibev.event = IB_EVENT_PORT_ERR;
		break;

	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2397
		ibdev->ib_active = false;
2398 2399 2400
		ibev.event = IB_EVENT_DEVICE_FATAL;
		break;

2401 2402 2403 2404 2405 2406 2407 2408 2409 2410
	case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
		ew = kmalloc(sizeof *ew, GFP_ATOMIC);
		if (!ew) {
			pr_err("failed to allocate memory for events work\n");
			break;
		}

		INIT_WORK(&ew->work, handle_port_mgmt_change_event);
		memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
		ew->ib_dev = ibdev;
2411 2412 2413 2414 2415
		/* need to queue only for port owner, which uses GEN_EQE */
		if (mlx4_is_master(dev))
			queue_work(wq, &ew->work);
		else
			handle_port_mgmt_change_event(&ew->work);
2416 2417
		return;

2418 2419 2420 2421 2422 2423 2424 2425 2426 2427
	case MLX4_DEV_EVENT_SLAVE_INIT:
		/* here, p is the slave id */
		do_slave_init(ibdev, p, 1);
		return;

	case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
		/* here, p is the slave id */
		do_slave_init(ibdev, p, 0);
		return;

2428 2429 2430 2431 2432
	default:
		return;
	}

	ibev.device	      = ibdev_ptr;
2433
	ibev.element.port_num = (u8) p;
2434 2435 2436 2437 2438

	ib_dispatch_event(&ibev);
}

static struct mlx4_interface mlx4_ib_interface = {
E
Eli Cohen 已提交
2439 2440 2441
	.add		= mlx4_ib_add,
	.remove		= mlx4_ib_remove,
	.event		= mlx4_ib_event,
2442
	.protocol	= MLX4_PROT_IB_IPV6
2443 2444 2445 2446
};

static int __init mlx4_ib_init(void)
{
E
Eli Cohen 已提交
2447 2448 2449 2450 2451 2452
	int err;

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

2453 2454 2455 2456
	err = mlx4_ib_mcg_init();
	if (err)
		goto clean_wq;

E
Eli Cohen 已提交
2457
	err = mlx4_register_interface(&mlx4_ib_interface);
2458 2459
	if (err)
		goto clean_mcg;
E
Eli Cohen 已提交
2460 2461

	return 0;
2462 2463 2464 2465 2466 2467 2468

clean_mcg:
	mlx4_ib_mcg_destroy();

clean_wq:
	destroy_workqueue(wq);
	return err;
2469 2470 2471 2472 2473
}

static void __exit mlx4_ib_cleanup(void)
{
	mlx4_unregister_interface(&mlx4_ib_interface);
2474
	mlx4_ib_mcg_destroy();
E
Eli Cohen 已提交
2475
	destroy_workqueue(wq);
2476 2477 2478 2479
}

module_init(mlx4_ib_init);
module_exit(mlx4_ib_cleanup);