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gfiber / kernel / quantenna / eae3b04165f650ed5521089f8ad8c29a4bd8fbea / . / drivers / infiniband / hw / mlx4 / main.c
blob: 42a46078d7d52755109784e769f29c2e5532bbca [file] [log] [blame]
/*
* Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
*
* 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>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/rtnetlink.h>
#include <linux/if_vlan.h>
#include <net/ipv6.h>
#include <net/addrconf.h>
#include <net/devlink.h>
#include <rdma/ib_smi.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_cache.h>
#include <net/bonding.h>
#include <linux/mlx4/driver.h>
#include <linux/mlx4/cmd.h>
#include <linux/mlx4/qp.h>
#include "mlx4_ib.h"
#include "user.h"
#define DRV_NAME MLX4_IB_DRV_NAME
#define DRV_VERSION "2.2-1"
#define DRV_RELDATE "Feb 2014"
#define MLX4_IB_FLOW_MAX_PRIO 0xFFF
#define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
#define MLX4_IB_CARD_REV_A0 0xA0
MODULE_AUTHOR("Roland Dreier");
MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION);
int mlx4_ib_sm_guid_assign = 0;
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: 0)");
static const char mlx4_ib_version[] =
DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
DRV_VERSION " (" DRV_RELDATE ")\n";
static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
static struct workqueue_struct *wq;
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;
}
static int check_flow_steering_support(struct mlx4_dev *dev)
{
int eth_num_ports = 0;
int ib_num_ports = 0;
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;
}
}
return dmfs;
}
static int num_ib_ports(struct mlx4_dev *dev)
{
int ib_ports = 0;
int i;
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
ib_ports++;
return ib_ports;
}
static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
{
struct mlx4_ib_dev *ibdev = to_mdev(device);
struct net_device *dev;
rcu_read_lock();
dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
if (dev) {
if (mlx4_is_bonded(ibdev->dev)) {
struct net_device *upper = NULL;
upper = netdev_master_upper_dev_get_rcu(dev);
if (upper) {
struct net_device *active;
active = bond_option_active_slave_get_rcu(netdev_priv(upper));
if (active)
dev = active;
}
}
}
if (dev)
dev_hold(dev);
rcu_read_unlock();
return dev;
}
static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
struct mlx4_ib_dev *ibdev,
u8 port_num)
{
struct mlx4_cmd_mailbox *mailbox;
int err;
struct mlx4_dev *dev = ibdev->dev;
int i;
union ib_gid *gid_tbl;
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return -ENOMEM;
gid_tbl = mailbox->buf;
for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
err = mlx4_cmd(dev, mailbox->dma,
MLX4_SET_PORT_GID_TABLE << 8 | port_num,
1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
MLX4_CMD_WRAPPED);
if (mlx4_is_bonded(dev))
err += mlx4_cmd(dev, mailbox->dma,
MLX4_SET_PORT_GID_TABLE << 8 | 2,
1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
MLX4_CMD_WRAPPED);
mlx4_free_cmd_mailbox(dev, mailbox);
return err;
}
static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
struct mlx4_ib_dev *ibdev,
u8 port_num)
{
struct mlx4_cmd_mailbox *mailbox;
int err;
struct mlx4_dev *dev = ibdev->dev;
int i;
struct {
union ib_gid gid;
__be32 rsrvd1[2];
__be16 rsrvd2;
u8 type;
u8 version;
__be32 rsrvd3;
} *gid_tbl;
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return -ENOMEM;
gid_tbl = mailbox->buf;
for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
gid_tbl[i].version = 2;
if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
gid_tbl[i].type = 1;
else
memset(&gid_tbl[i].gid, 0, 12);
}
}
err = mlx4_cmd(dev, mailbox->dma,
MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
MLX4_CMD_WRAPPED);
if (mlx4_is_bonded(dev))
err += mlx4_cmd(dev, mailbox->dma,
MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
MLX4_CMD_WRAPPED);
mlx4_free_cmd_mailbox(dev, mailbox);
return err;
}
static int mlx4_ib_update_gids(struct gid_entry *gids,
struct mlx4_ib_dev *ibdev,
u8 port_num)
{
if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
}
static int mlx4_ib_add_gid(struct ib_device *device,
u8 port_num,
unsigned int index,
const union ib_gid *gid,
const struct ib_gid_attr *attr,
void **context)
{
struct mlx4_ib_dev *ibdev = to_mdev(device);
struct mlx4_ib_iboe *iboe = &ibdev->iboe;
struct mlx4_port_gid_table *port_gid_table;
int free = -1, found = -1;
int ret = 0;
int hw_update = 0;
int i;
struct gid_entry *gids = NULL;
if (!rdma_cap_roce_gid_table(device, port_num))
return -EINVAL;
if (port_num > MLX4_MAX_PORTS)
return -EINVAL;
if (!context)
return -EINVAL;
port_gid_table = &iboe->gids[port_num - 1];
spin_lock_bh(&iboe->lock);
for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
(port_gid_table->gids[i].gid_type == attr->gid_type)) {
found = i;
break;
}
if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
free = i; /* HW has space */
}
if (found < 0) {
if (free < 0) {
ret = -ENOSPC;
} else {
port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
if (!port_gid_table->gids[free].ctx) {
ret = -ENOMEM;
} else {
*context = port_gid_table->gids[free].ctx;
memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
port_gid_table->gids[free].gid_type = attr->gid_type;
port_gid_table->gids[free].ctx->real_index = free;
port_gid_table->gids[free].ctx->refcount = 1;
hw_update = 1;
}
}
} else {
struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
*context = ctx;
ctx->refcount++;
}
if (!ret && hw_update) {
gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
if (!gids) {
ret = -ENOMEM;
} else {
for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
gids[i].gid_type = port_gid_table->gids[i].gid_type;
}
}
}
spin_unlock_bh(&iboe->lock);
if (!ret && hw_update) {
ret = mlx4_ib_update_gids(gids, ibdev, port_num);
kfree(gids);
}
return ret;
}
static int mlx4_ib_del_gid(struct ib_device *device,
u8 port_num,
unsigned int index,
void **context)
{
struct gid_cache_context *ctx = *context;
struct mlx4_ib_dev *ibdev = to_mdev(device);
struct mlx4_ib_iboe *iboe = &ibdev->iboe;
struct mlx4_port_gid_table *port_gid_table;
int ret = 0;
int hw_update = 0;
struct gid_entry *gids = NULL;
if (!rdma_cap_roce_gid_table(device, port_num))
return -EINVAL;
if (port_num > MLX4_MAX_PORTS)
return -EINVAL;
port_gid_table = &iboe->gids[port_num - 1];
spin_lock_bh(&iboe->lock);
if (ctx) {
ctx->refcount--;
if (!ctx->refcount) {
unsigned int real_index = ctx->real_index;
memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
kfree(port_gid_table->gids[real_index].ctx);
port_gid_table->gids[real_index].ctx = NULL;
hw_update = 1;
}
}
if (!ret && hw_update) {
int i;
gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
if (!gids) {
ret = -ENOMEM;
} else {
for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
}
}
spin_unlock_bh(&iboe->lock);
if (!ret && hw_update) {
ret = mlx4_ib_update_gids(gids, ibdev, port_num);
kfree(gids);
}
return ret;
}
int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
u8 port_num, int index)
{
struct mlx4_ib_iboe *iboe = &ibdev->iboe;
struct gid_cache_context *ctx = NULL;
union ib_gid gid;
struct mlx4_port_gid_table *port_gid_table;
int real_index = -EINVAL;
int i;
int ret;
unsigned long flags;
struct ib_gid_attr attr;
if (port_num > MLX4_MAX_PORTS)
return -EINVAL;
if (mlx4_is_bonded(ibdev->dev))
port_num = 1;
if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
return index;
ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
if (ret)
return ret;
if (attr.ndev)
dev_put(attr.ndev);
if (!memcmp(&gid, &zgid, sizeof(gid)))
return -EINVAL;
spin_lock_irqsave(&iboe->lock, flags);
port_gid_table = &iboe->gids[port_num - 1];
for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
attr.gid_type == port_gid_table->gids[i].gid_type) {
ctx = port_gid_table->gids[i].ctx;
break;
}
if (ctx)
real_index = ctx->real_index;
spin_unlock_irqrestore(&iboe->lock, flags);
return real_index;
}
static int mlx4_ib_query_device(struct ib_device *ibdev,
struct ib_device_attr *props,
struct ib_udata *uhw)
{
struct mlx4_ib_dev *dev = to_mdev(ibdev);
struct ib_smp *in_mad = NULL;
struct ib_smp *out_mad = NULL;
int err = -ENOMEM;
int have_ib_ports;
struct mlx4_uverbs_ex_query_device cmd;
struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
struct mlx4_clock_params clock_params;
if (uhw->inlen) {
if (uhw->inlen < sizeof(cmd))
return -EINVAL;
err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
if (err)
return err;
if (cmd.comp_mask)
return -EINVAL;
if (cmd.reserved)
return -EINVAL;
}
resp.response_length = offsetof(typeof(resp), response_length) +
sizeof(resp.response_length);
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), MLX4_MAD_IFC_IGNORE_KEYS,
1, NULL, NULL, in_mad, out_mad);
if (err)
goto out;
memset(props, 0, sizeof *props);
have_ib_ports = num_ib_ports(dev->dev);
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 |
IB_DEVICE_RC_RNR_NAK_GEN |
IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
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 && have_ib_ports)
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;
if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
if (dev->dev->caps.max_gso_sz &&
(dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
props->device_cap_flags |= IB_DEVICE_UD_TSO;
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;
if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
props->device_cap_flags |= IB_DEVICE_XRC;
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;
}
if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
0xffffff;
props->vendor_part_id = dev->dev->persist->pdev->device;
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->quotas.qp;
props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
props->max_sge = min(dev->dev->caps.max_sq_sg,
dev->dev->caps.max_rq_sg);
props->max_sge_rd = MLX4_MAX_SGE_RD;
props->max_cq = dev->dev->quotas.cq;
props->max_cqe = dev->dev->caps.max_cqes;
props->max_mr = dev->dev->quotas.mpt;
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->quotas.srq;
props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
props->max_srq_sge = dev->dev->caps.max_srq_sge;
props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
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;
props->masked_atomic_cap = props->atomic_cap;
props->max_pkeys = dev->dev->caps.pkey_table_len[1];
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 = dev->dev->caps.max_fmr_maps;
props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
props->timestamp_mask = 0xFFFFFFFFFFFFULL;
if (!mlx4_is_slave(dev->dev))
err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
resp.response_length += sizeof(resp.hca_core_clock_offset);
if (!err && !mlx4_is_slave(dev->dev)) {
resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
}
}
if (uhw->outlen) {
err = ib_copy_to_udata(uhw, &resp, resp.response_length);
if (err)
goto out;
}
out:
kfree(in_mad);
kfree(out_mad);
return err;
}
static enum rdma_link_layer
mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
{
struct mlx4_dev *dev = to_mdev(device)->dev;
return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
}
static int ib_link_query_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props, int netw_view)
{
struct ib_smp *in_mad = NULL;
struct ib_smp *out_mad = NULL;
int ext_active_speed;
int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
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);
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);
if (err)
goto out;
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));
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];
props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
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;
/* 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:
props->active_speed = IB_SPEED_FDR;
break;
case 2:
props->active_speed = IB_SPEED_EDR;
break;
}
}
/* If reported active speed is QDR, check if is FDR-10 */
if (props->active_speed == IB_SPEED_QDR) {
init_query_mad(in_mad);
in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
in_mad->attr_mod = cpu_to_be32(port);
err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
NULL, NULL, in_mad, out_mad);
if (err)
goto out;
/* Checking LinkSpeedActive for FDR-10 */
if (out_mad->data[15] & 0x1)
props->active_speed = IB_SPEED_FDR10;
}
/* 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;
out:
kfree(in_mad);
kfree(out_mad);
return err;
}
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, int netw_view)
{
struct mlx4_ib_dev *mdev = to_mdev(ibdev);
struct mlx4_ib_iboe *iboe = &mdev->iboe;
struct net_device *ndev;
enum ib_mtu tmp;
struct mlx4_cmd_mailbox *mailbox;
int err = 0;
int is_bonded = mlx4_is_bonded(mdev->dev);
mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
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;
props->active_speed = IB_SPEED_QDR;
props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
props->max_msg_sz = mdev->dev->caps.max_msg_sz;
props->pkey_tbl_len = 1;
props->max_mtu = IB_MTU_4096;
props->max_vl_num = 2;
props->state = IB_PORT_DOWN;
props->phys_state = state_to_phys_state(props->state);
props->active_mtu = IB_MTU_256;
spin_lock_bh(&iboe->lock);
ndev = iboe->netdevs[port - 1];
if (ndev && is_bonded) {
rcu_read_lock(); /* required to get upper dev */
ndev = netdev_master_upper_dev_get_rcu(ndev);
rcu_read_unlock();
}
if (!ndev)
goto out_unlock;
tmp = iboe_get_mtu(ndev->mtu);
props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
IB_PORT_ACTIVE : IB_PORT_DOWN;
props->phys_state = state_to_phys_state(props->state);
out_unlock:
spin_unlock_bh(&iboe->lock);
out:
mlx4_free_cmd_mailbox(mdev->dev, mailbox);
return err;
}
int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props, int netw_view)
{
int err;
memset(props, 0, sizeof *props);
err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
ib_link_query_port(ibdev, port, props, netw_view) :
eth_link_query_port(ibdev, port, props, netw_view);
return err;
}
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);
}
int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
union ib_gid *gid, int netw_view)
{
struct ib_smp *in_mad = NULL;
struct ib_smp *out_mad = NULL;
int err = -ENOMEM;
struct mlx4_ib_dev *dev = to_mdev(ibdev);
int clear = 0;
int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
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);
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);
if (err)
goto out;
memcpy(gid->raw, out_mad->data + 8, 8);
if (mlx4_is_mfunc(dev->dev) && !netw_view) {
if (index) {
/* For any index > 0, return the null guid */
err = 0;
clear = 1;
goto out;
}
}
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(dev, mad_ifc_flags, port,
NULL, NULL, in_mad, out_mad);
if (err)
goto out;
memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
out:
if (clear)
memset(gid->raw + 8, 0, 8);
kfree(in_mad);
kfree(out_mad);
return err;
}
static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
union ib_gid *gid)
{
int ret;
if (rdma_protocol_ib(ibdev, port))
return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
if (!rdma_protocol_roce(ibdev, port))
return -ENODEV;
if (!rdma_cap_roce_gid_table(ibdev, port))
return -ENODEV;
ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
if (ret == -EAGAIN) {
memcpy(gid, &zgid, sizeof(*gid));
return 0;
}
return ret;
}
int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
u16 *pkey, int netw_view)
{
struct ib_smp *in_mad = NULL;
struct ib_smp *out_mad = NULL;
int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
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);
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);
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_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
{
return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
}
static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
struct ib_device_modify *props)
{
struct mlx4_cmd_mailbox *mailbox;
unsigned long flags;
if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
return -EOPNOTSUPP;
if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
return 0;
if (mlx4_is_slave(to_mdev(ibdev)->dev))
return -EOPNOTSUPP;
spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
memcpy(ibdev->node_desc, props->node_desc, 64);
spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
/*
* 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,
MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
return 0;
}
static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
u32 cap_mask)
{
struct mlx4_cmd_mailbox *mailbox;
int err;
mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
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);
}
err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
MLX4_CMD_WRAPPED);
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 mlx4_ib_dev *mdev = to_mdev(ibdev);
u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
struct ib_port_attr attr;
u32 cap_mask;
int err;
/* return OK if this is RoCE. CM calls ib_modify_port() regardless
* of whether port link layer is ETH or IB. For ETH ports, qkey
* violations and port capabilities are not meaningful.
*/
if (is_eth)
return 0;
mutex_lock(&mdev->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_ib_SET_PORT(mdev, 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_v3 resp_v3;
struct mlx4_ib_alloc_ucontext_resp resp;
int err;
if (!dev->ib_active)
return ERR_PTR(-EAGAIN);
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;
}
context = kzalloc(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);
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));
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 void mlx4_ib_vma_open(struct vm_area_struct *area)
{
/* vma_open is called when a new VMA is created on top of our VMA.
* This is done through either mremap flow or split_vma (usually due
* to mlock, madvise, munmap, etc.). We do not support a clone of the
* vma, as this VMA is strongly hardware related. Therefore we set the
* vm_ops of the newly created/cloned VMA to NULL, to prevent it from
* calling us again and trying to do incorrect actions. We assume that
* the original vma size is exactly a single page that there will be no
* "splitting" operations on.
*/
area->vm_ops = NULL;
}
static void mlx4_ib_vma_close(struct vm_area_struct *area)
{
struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
/* It's guaranteed that all VMAs opened on a FD are closed before the
* file itself is closed, therefore no sync is needed with the regular
* closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
* with accessing the vma as part of mlx4_ib_disassociate_ucontext.
* The close operation is usually called under mm->mmap_sem except when
* process is exiting. The exiting case is handled explicitly as part
* of mlx4_ib_disassociate_ucontext.
*/
mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
area->vm_private_data;
/* set the vma context pointer to null in the mlx4_ib driver's private
* data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
*/
mlx4_ib_vma_priv_data->vma = NULL;
}
static const struct vm_operations_struct mlx4_ib_vm_ops = {
.open = mlx4_ib_vma_open,
.close = mlx4_ib_vma_close
};
static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
{
int i;
int ret = 0;
struct vm_area_struct *vma;
struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
struct task_struct *owning_process = NULL;
struct mm_struct *owning_mm = NULL;
owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
if (!owning_process)
return;
owning_mm = get_task_mm(owning_process);
if (!owning_mm) {
pr_info("no mm, disassociate ucontext is pending task termination\n");
while (1) {
/* make sure that task is dead before returning, it may
* prevent a rare case of module down in parallel to a
* call to mlx4_ib_vma_close.
*/
put_task_struct(owning_process);
msleep(1);
owning_process = get_pid_task(ibcontext->tgid,
PIDTYPE_PID);
if (!owning_process ||
owning_process->state == TASK_DEAD) {
pr_info("disassociate ucontext done, task was terminated\n");
/* in case task was dead need to release the task struct */
if (owning_process)
put_task_struct(owning_process);
return;
}
}
}
/* need to protect from a race on closing the vma as part of
* mlx4_ib_vma_close().
*/
down_read(&owning_mm->mmap_sem);
for (i = 0; i < HW_BAR_COUNT; i++) {
vma = context->hw_bar_info[i].vma;
if (!vma)
continue;
ret = zap_vma_ptes(context->hw_bar_info[i].vma,
context->hw_bar_info[i].vma->vm_start,
PAGE_SIZE);
if (ret) {
pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
BUG_ON(1);
}
/* context going to be destroyed, should not access ops any more */
context->hw_bar_info[i].vma->vm_ops = NULL;
}
up_read(&owning_mm->mmap_sem);
mmput(owning_mm);
put_task_struct(owning_process);
}
static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
struct mlx4_ib_vma_private_data *vma_private_data)
{
vma_private_data->vma = vma;
vma->vm_private_data = vma_private_data;
vma->vm_ops = &mlx4_ib_vm_ops;
}
static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
struct mlx4_ib_dev *dev = to_mdev(context->device);
struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
if (vma->vm_end - vma->vm_start != PAGE_SIZE)
return -EINVAL;
if (vma->vm_pgoff == 0) {
/* We prevent double mmaping on same context */
if (mucontext->hw_bar_info[HW_BAR_DB].vma)
return -EINVAL;
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;
mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
} else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
/* We prevent double mmaping on same context */
if (mucontext->hw_bar_info[HW_BAR_BF].vma)
return -EINVAL;
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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;
mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
} else if (vma->vm_pgoff == 3) {
struct mlx4_clock_params params;
int ret;
/* We prevent double mmaping on same context */
if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
return -EINVAL;
ret = mlx4_get_internal_clock_params(dev->dev, &params);
if (ret)
return ret;
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
if (io_remap_pfn_range(vma, vma->vm_start,
(pci_resource_start(dev->dev->persist->pdev,
params.bar) +
params.offset)
>> PAGE_SHIFT,
PAGE_SIZE, vma->vm_page_prot))
return -EAGAIN;
mlx4_ib_set_vma_data(vma,
&mucontext->hw_bar_info[HW_BAR_CLOCK]);
} 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;
}
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;
struct ib_cq_init_attr cq_attr = {};
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;
}
cq_attr.cqe = 1;
xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
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;
}
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;
}
static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
struct mlx4_ib_counters *ctr_table)
{
struct counter_index *counter, *tmp_count;
mutex_lock(&ctr_table->mutex);
list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
list) {
if (counter->allocated)
mlx4_counter_free(ibdev->dev, counter->index);
list_del(&counter->list);
kfree(counter);
}
mutex_unlock(&ctr_table->mutex);
}
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_bh(&mdev->iboe.lock);
ndev = mdev->iboe.netdevs[mqp->port - 1];
if (ndev)
dev_hold(ndev);
spin_unlock_bh(&mdev->iboe.lock);
if (ndev) {
ret = 1;
dev_put(ndev);
}
return ret;
}
struct mlx4_ib_steering {
struct list_head list;
struct mlx4_flow_reg_id reg_id;
union ib_gid gid;
};
static int parse_flow_attr(struct mlx4_dev *dev,
u32 qp_num,
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;
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;
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);
}
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 < ARRAY_SIZE(default_table); 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 < ARRAY_SIZE(pdefault_rules->rules_create_list); 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;
}
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;
int default_flow;
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);
/* 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;
}
for (i = 0; i < flow_attr->num_of_specs; i++) {
ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
mailbox->buf + size);
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_WRAPPED);
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 argument. 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_WRAPPED);
if (err)
pr_err("Fail to detach network rule. registration id = 0x%llx\n",
reg_id);
return err;
}
static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
u64 *reg_id)
{
void *ib_flow;
union ib_flow_spec *ib_spec;
struct mlx4_dev *dev = to_mdev(qp->device)->dev;
int err = 0;
if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
return 0; /* do nothing */
ib_flow = flow_attr + 1;
ib_spec = (union ib_flow_spec *)ib_flow;
if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
return 0; /* do nothing */
err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
flow_attr->port, qp->qp_num,
MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
reg_id);
return err;
}
static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
struct ib_flow_attr *flow_attr,
enum mlx4_net_trans_promisc_mode *type)
{
int err = 0;
if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
(dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
(flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
return -EOPNOTSUPP;
}
if (flow_attr->num_of_specs == 0) {
type[0] = MLX4_FS_MC_SNIFFER;
type[1] = MLX4_FS_UC_SNIFFER;
} else {
union ib_flow_spec *ib_spec;
ib_spec = (union ib_flow_spec *)(flow_attr + 1);
if (ib_spec->type != IB_FLOW_SPEC_ETH)
return -EINVAL;
/* if all is zero than MC and UC */
if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
type[0] = MLX4_FS_MC_SNIFFER;
type[1] = MLX4_FS_UC_SNIFFER;
} else {
u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
ib_spec->eth.mask.dst_mac[1],
ib_spec->eth.mask.dst_mac[2],
ib_spec->eth.mask.dst_mac[3],
ib_spec->eth.mask.dst_mac[4],
ib_spec->eth.mask.dst_mac[5]};
/* Above xor was only on MC bit, non empty mask is valid
* only if this bit is set and rest are zero.
*/
if (!is_zero_ether_addr(&mac[0]))
return -EINVAL;
if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
type[0] = MLX4_FS_MC_SNIFFER;
else
type[0] = MLX4_FS_UC_SNIFFER;
}
}
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, j = 0;
struct mlx4_ib_flow *mflow;
enum mlx4_net_trans_promisc_mode type[2];
struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
int is_bonded = mlx4_is_bonded(dev);
if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
return ERR_PTR(-EINVAL);
if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
(flow_attr->type != IB_FLOW_ATTR_NORMAL))
return ERR_PTR(-EOPNOTSUPP);
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:
/* If dont trap flag (continue match) is set, under specific
* condition traffic be replicated to given qp,
* without stealing it
*/
if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
err = mlx4_ib_add_dont_trap_rule(dev,
flow_attr,
type);
if (err)
goto err_free;
} else {
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_MIRROR_RX_PORT;
type[1] = MLX4_FS_MIRROR_SX_PORT;
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].id);
if (err)
goto err_create_flow;
if (is_bonded) {
/* Application always sees one port so the mirror rule
* must be on port #2
*/
flow_attr->port = 2;
err = __mlx4_ib_create_flow(qp, flow_attr,
domain, type[j],
&mflow->reg_id[j].mirror);
flow_attr->port = 1;
if (err)
goto err_create_flow;
j++;
}
i++;
}
if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
&mflow->reg_id[i].id);
if (err)
goto err_create_flow;
if (is_bonded) {
flow_attr->port = 2;
err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
&mflow->reg_id[j].mirror);
flow_attr->port = 1;
if (err)
goto err_create_flow;
j++;
}
/* function to create mirror rule */
i++;
}
return &mflow->ibflow;
err_create_flow:
while (i) {
(void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
mflow->reg_id[i].id);
i--;
}
while (j) {
(void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
mflow->reg_id[j].mirror);
j--;
}
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].id) {
err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
if (err)
ret = err;
if (mflow->reg_id[i].mirror) {
err = __mlx4_ib_destroy_flow(mdev->dev,
mflow->reg_id[i].mirror);
if (err)
ret = err;
}
i++;
}
kfree(mflow);
return ret;
}
static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
int err;
struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
struct mlx4_dev *dev = mdev->dev;
struct mlx4_ib_qp *mqp = to_mqp(ibqp);
struct mlx4_ib_steering *ib_steering = NULL;
enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
struct mlx4_flow_reg_id reg_id;
if (mdev->dev->caps.steering_mode ==
MLX4_STEERING_MODE_DEVICE_MANAGED) {
ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
if (!ib_steering)
return -ENOMEM;
}
err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
!!(mqp->flags &
MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
prot, &reg_id.id);
if (err) {
pr_err("multicast attach op failed, err %d\n", err);
goto err_malloc;
}
reg_id.mirror = 0;
if (mlx4_is_bonded(dev)) {
err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
(mqp->port == 1) ? 2 : 1,
!!(mqp->flags &
MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
prot, &reg_id.mirror);
if (err)
goto err_add;
}
err = add_gid_entry(ibqp, gid);
if (err)
goto err_add;
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);
}
return 0;
err_add:
mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
prot, reg_id.id);
if (reg_id.mirror)
mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
prot, reg_id.mirror);
err_malloc:
kfree(ib_steering);
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;
}
static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
int err;
struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
struct mlx4_dev *dev = mdev->dev;
struct mlx4_ib_qp *mqp = to_mqp(ibqp);
struct net_device *ndev;
struct mlx4_ib_gid_entry *ge;
struct mlx4_flow_reg_id reg_id = {0, 0};
enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
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);
}
err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
prot, reg_id.id);
if (err)
return err;
if (mlx4_is_bonded(dev)) {
err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
prot, reg_id.mirror);
if (err)
return err;
}
mutex_lock(&mqp->mutex);
ge = find_gid_entry(mqp, gid->raw);
if (ge) {
spin_lock_bh(&mdev->iboe.lock);
ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
if (ndev)
dev_hold(ndev);
spin_unlock_bh(&mdev->iboe.lock);
if (ndev)
dev_put(ndev);
list_del(&ge->list);
kfree(ge);
} else
pr_warn("could not find mgid entry\n");
mutex_unlock(&mqp->mutex);
return 0;
}
static int init_node_data(struct mlx4_ib_dev *dev)
{
struct ib_smp *in_mad = NULL;
struct ib_smp *out_mad = NULL;
int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
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;
if (mlx4_is_master(dev->dev))
mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
err = mlx4_MAD_IFC(dev, mad_ifc_flags, 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, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
if (err)
goto out;
dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
out:
kfree(in_mad);
kfree(out_mad);
return err;
}
static ssize_t show_hca(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx4_ib_dev *dev =
container_of(device, struct mlx4_ib_dev, ib_dev.dev);
return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
}
static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx4_ib_dev *dev =
container_of(device, struct mlx4_ib_dev, ib_dev.dev);
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);
}
static ssize_t show_rev(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx4_ib_dev *dev =
container_of(device, struct mlx4_ib_dev, ib_dev.dev);
return sprintf(buf, "%x\n", dev->dev->rev_id);
}
static ssize_t show_board(struct device *device, struct device_attribute *attr,
char *buf)
{
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);
}
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);
static struct device_attribute *mlx4_class_attributes[] = {
&dev_attr_hw_rev,
&dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id
};
#define MLX4_IB_INVALID_MAC ((u64)-1)
static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
struct net_device *dev,
int port)
{
u64 new_smac = 0;
u64 release_mac = MLX4_IB_INVALID_MAC;
struct mlx4_ib_qp *qp;
read_lock(&dev_base_lock);
new_smac = mlx4_mac_to_u64(dev->dev_addr);
read_unlock(&dev_base_lock);
atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
/* no need for update QP1 and mac registration in non-SRIOV */
if (!mlx4_is_mfunc(ibdev->dev))
return;
mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
qp = ibdev->qp1_proxy[port - 1];
if (qp) {
int new_smac_index;
u64 old_smac;
struct mlx4_update_qp_params update_params;
mutex_lock(&qp->mutex);
old_smac = qp->pri.smac;
if (new_smac == old_smac)
goto unlock;
new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
if (new_smac_index < 0)
goto unlock;
update_params.smac_index = new_smac_index;
if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
&update_params)) {
release_mac = new_smac;
goto unlock;
}
/* if old port was zero, no mac was yet registered for this QP */
if (qp->pri.smac_port)
release_mac = old_smac;
qp->pri.smac = new_smac;
qp->pri.smac_port = port;
qp->pri.smac_index = new_smac_index;
}
unlock:
if (release_mac != MLX4_IB_INVALID_MAC)
mlx4_unregister_mac(ibdev->dev, port, release_mac);
if (qp)
mutex_unlock(&qp->mutex);
mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
}
static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
struct net_device *dev,
unsigned long event)
{
struct mlx4_ib_iboe *iboe;
int update_qps_port = -1;
int port;
ASSERT_RTNL();
iboe = &ibdev->iboe;
spin_lock_bh(&iboe->lock);
mlx4_foreach_ib_transport_port(port, ibdev->dev) {
iboe->netdevs[port - 1] =
mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
if (dev == iboe->netdevs[port - 1] &&
(event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
event == NETDEV_UP || event == NETDEV_CHANGE))
update_qps_port = port;
}
spin_unlock_bh(&iboe->lock);
if (update_qps_port > 0)
mlx4_ib_update_qps(ibdev, dev, update_qps_port);
}
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, dev, event);
return NOTIFY_DONE;
}
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->persist->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;
}
}
}
static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
{
int i, j, eq = 0, total_eqs = 0;
ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
sizeof(ibdev->eq_table[0]), GFP_KERNEL);
if (!ibdev->eq_table)
return;
for (i = 1; i <= dev->caps.num_ports; i++) {
for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
j++, total_eqs++) {
if (i > 1 && mlx4_is_eq_shared(dev, total_eqs))
continue;
ibdev->eq_table[eq] = total_eqs;
if (!mlx4_assign_eq(dev, i,
&ibdev->eq_table[eq]))
eq++;
else
ibdev->eq_table[eq] = -1;
}
}
for (i = eq; i < dev->caps.num_comp_vectors;
ibdev->eq_table[i++] = -1)
;
/* Advertise the new number of EQs to clients */
ibdev->ib_dev.num_comp_vectors = eq;
}
static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
{
int i;
int total_eqs = ibdev->ib_dev.num_comp_vectors;
/* no eqs were allocated */
if (!ibdev->eq_table)
return;
/* Reset the advertised EQ number */
ibdev->ib_dev.num_comp_vectors = 0;
for (i = 0; i < total_eqs; i++)
mlx4_release_eq(dev, ibdev->eq_table[i]);
kfree(ibdev->eq_table);
ibdev->eq_table = NULL;
}
static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
struct mlx4_ib_dev *mdev = to_mdev(ibdev);
int err;
err = mlx4_ib_query_port(ibdev, port_num, &attr);
if (err)
return err;
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
} else {
if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
}
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}
static void *mlx4_ib_add(struct mlx4_dev *dev)
{
struct mlx4_ib_dev *ibdev;
int num_ports = 0;
int i, j;
int err;
struct mlx4_ib_iboe *iboe;
int ib_num_ports = 0;
int num_req_counters;
int allocated;
u32 counter_index;
struct counter_index *new_counter_index = NULL;
pr_info_once("%s", mlx4_ib_version);
num_ports = 0;
mlx4_foreach_ib_transport_port(i, dev)
num_ports++;
/* No point in registering a device with no ports... */
if (num_ports == 0)
return NULL;
ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
if (!ibdev) {
dev_err(&dev->persist->pdev->dev,
"Device struct alloc failed\n");
return NULL;
}
iboe = &ibdev->iboe;
if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
goto err_dealloc;
if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
goto err_pd;
ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
PAGE_SIZE);
if (!ibdev->uar_map)
goto err_uar;
MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
ibdev->dev = dev;
ibdev->bond_next_port = 0;
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;
ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
ibdev->num_ports = num_ports;
ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ?
1 : ibdev->num_ports;
ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
ibdev->ib_dev.dma_device = &dev->persist->pdev->dev;
ibdev->ib_dev.get_netdev = mlx4_ib_get_netdev;
ibdev->ib_dev.add_gid = mlx4_ib_add_gid;
ibdev->ib_dev.del_gid = mlx4_ib_del_gid;
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;
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_REREG_MR) |
(1ull << IB_USER_VERBS_CMD_DEREG_MR) |
(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
(1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
(1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
(1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
(1ull << IB_USER_VERBS_CMD_CREATE_QP) |
(1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
(1ull << IB_USER_VERBS_CMD_QUERY_QP) |
(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) |
(1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
(1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
(1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
(1ull << IB_USER_VERBS_CMD_OPEN_QP);
ibdev->ib_dev.query_device = mlx4_ib_query_device;
ibdev->ib_dev.query_port = mlx4_ib_query_port;
ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
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;
ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
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;
ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
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;
ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
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.rereg_user_mr = mlx4_ib_rereg_user_mr;
ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
ibdev->ib_dev.alloc_mr = mlx4_ib_alloc_mr;
ibdev->ib_dev.map_mr_sg = mlx4_ib_map_mr_sg;
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;
ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
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;
}
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.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);
}
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);
}
if (check_flow_steering_support(dev)) {
ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
ibdev->ib_dev.create_flow = mlx4_ib_create_flow;
ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow;
ibdev->ib_dev.uverbs_ex_cmd_mask |=
(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
}
ibdev->ib_dev.uverbs_ex_cmd_mask |=
(1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
(1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
(1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
mlx4_ib_alloc_eqs(dev, ibdev);
spin_lock_init(&iboe->lock);
if (init_node_data(ibdev))
goto err_map;
for (i = 0; i < ibdev->num_ports; ++i) {
mutex_init(&ibdev->counters_table[i].mutex);
INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
}
num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
for (i = 0; i < num_req_counters; ++i) {
mutex_init(&ibdev->qp1_proxy_lock[i]);
allocated = 0;
if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
IB_LINK_LAYER_ETHERNET) {
err = mlx4_counter_alloc(ibdev->dev, &counter_index);
/* if failed to allocate a new counter, use default */
if (err)
counter_index =
mlx4_get_default_counter_index(dev,
i + 1);
else
allocated = 1;
} else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
counter_index = mlx4_get_default_counter_index(dev,
i + 1);
}
new_counter_index = kmalloc(sizeof(*new_counter_index),
GFP_KERNEL);
if (!new_counter_index) {
if (allocated)
mlx4_counter_free(ibdev->dev, counter_index);
goto err_counter;
}
new_counter_index->index = counter_index;
new_counter_index->allocated = allocated;
list_add_tail(&new_counter_index->list,
&ibdev->counters_table[i].counters_list);
ibdev->counters_table[i].default_counter = counter_index;
pr_info("counter index %d for port %d allocated %d\n",
counter_index, i + 1, allocated);
}
if (mlx4_is_bonded(dev))
for (i = 1; i < ibdev->num_ports ; ++i) {
new_counter_index =
kmalloc(sizeof(struct counter_index),
GFP_KERNEL);
if (!new_counter_index)
goto err_counter;
new_counter_index->index = counter_index;
new_counter_index->allocated = 0;
list_add_tail(&new_counter_index->list,
&ibdev->counters_table[i].counters_list);
ibdev->counters_table[i].default_counter =
counter_index;
}
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
ib_num_ports++;
spin_lock_init(&ibdev->sm_lock);
mutex_init(&ibdev->cap_mask_mutex);
INIT_LIST_HEAD(&ibdev->qp_list);
spin_lock_init(&ibdev->reset_flow_resource_lock);
if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
ib_num_ports) {
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, 0);
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->persist->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;
}
for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
if (ib_register_device(&ibdev->ib_dev, NULL))
goto err_steer_free_bitmap;
if (mlx4_ib_mad_init(ibdev))
goto err_reg;
if (mlx4_ib_init_sriov(ibdev))
goto err_mad;
if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE ||
dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
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 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
if (err) {
goto err_notif;
}
}
}
for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
if (device_create_file(&ibdev->ib_dev.dev,
mlx4_class_attributes[j]))
goto err_notif;
}
ibdev->ib_active = true;
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
&ibdev->ib_dev);
if (mlx4_is_mfunc(ibdev->dev))
init_pkeys(ibdev);
/* 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);
}
}
return ibdev;
err_notif:
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;
}
flush_workqueue(wq);
mlx4_ib_close_sriov(ibdev);
err_mad:
mlx4_ib_mad_cleanup(ibdev);
err_reg:
ib_unregister_device(&ibdev->ib_dev);
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);
err_counter:
for (i = 0; i < ibdev->num_ports; ++i)
mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
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;
}
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;
}
static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
{
struct mlx4_ib_dev *ibdev = ibdev_ptr;
int p;
int i;
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
ibdev->ib_active = false;
flush_workqueue(wq);
mlx4_ib_close_sriov(ibdev);
mlx4_ib_mad_cleanup(ibdev);
ib_unregister_device(&ibdev->ib_dev);
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->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);
}
iounmap(ibdev->uar_map);
for (p = 0; p < ibdev->num_ports; ++p)
mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
mlx4_CLOSE_PORT(dev, p);
mlx4_ib_free_eqs(dev, ibdev);
mlx4_uar_free(dev, &ibdev->priv_uar);
mlx4_pd_free(dev, ibdev->priv_pdn);
ib_dealloc_device(&ibdev->ib_dev);
}
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;
struct mlx4_active_ports actv_ports;
unsigned int ports;
unsigned int first_port;
if (!mlx4_is_master(dev))
return;
actv_ports = mlx4_get_active_ports(dev, slave);
ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
if (!dm) {
pr_err("failed to allocate memory for tunneling qp update\n");
return;
}
for (i = 0; i < 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");
while (--i >= 0)
kfree(dm[i]);
goto out;
}
INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
dm[i]->port = first_port + i + 1;
dm[i]->slave = slave;
dm[i]->do_init = do_init;
dm[i]->dev = ibdev;
}
/* initialize or tear down tunnel QPs for the slave */
spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
if (!ibdev->sriov.is_going_down) {
for (i = 0; i < ports; i++)
queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
} else {
spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
for (i = 0; i < ports; i++)
kfree(dm[i]);
}
out:
kfree(dm);
return;
}
static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
{
struct mlx4_ib_qp *mqp;
unsigned long flags_qp;
unsigned long flags_cq;
struct mlx4_ib_cq *send_mcq, *recv_mcq;
struct list_head cq_notify_list;
struct mlx4_cq *mcq;
unsigned long flags;
pr_warn("mlx4_ib_handle_catas_error was started\n");
INIT_LIST_HEAD(&cq_notify_list);
/* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
spin_lock_irqsave(&mqp->sq.lock, flags_qp);
if (mqp->sq.tail != mqp->sq.head) {
send_mcq = to_mcq(mqp->ibqp.send_cq);
spin_lock_irqsave(&send_mcq->lock, flags_cq);
if (send_mcq->mcq.comp &&
mqp->ibqp.send_cq->comp_handler) {
if (!send_mcq->mcq.reset_notify_added) {
send_mcq->mcq.reset_notify_added = 1;
list_add_tail(&send_mcq->mcq.reset_notify,
&cq_notify_list);
}
}
spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
}
spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
/* Now, handle the QP's receive queue */
spin_lock_irqsave(&mqp->rq.lock, flags_qp);
/* no handling is needed for SRQ */
if (!mqp->ibqp.srq) {
if (mqp->rq.tail != mqp->rq.head) {
recv_mcq = to_mcq(mqp->ibqp.recv_cq);
spin_lock_irqsave(&recv_mcq->lock, flags_cq);
if (recv_mcq->mcq.comp &&
mqp->ibqp.recv_cq->comp_handler) {
if (!recv_mcq->mcq.reset_notify_added) {
recv_mcq->mcq.reset_notify_added = 1;
list_add_tail(&recv_mcq->mcq.reset_notify,
&cq_notify_list);
}
}
spin_unlock_irqrestore(&recv_mcq->lock,
flags_cq);
}
}
spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
}
list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
mcq->comp(mcq);
}
spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
pr_warn("mlx4_ib_handle_catas_error ended\n");
}
static void handle_bonded_port_state_event(struct work_struct *work)
{
struct ib_event_work *ew =
container_of(work, struct ib_event_work, work);
struct mlx4_ib_dev *ibdev = ew->ib_dev;
enum ib_port_state bonded_port_state = IB_PORT_NOP;
int i;
struct ib_event ibev;
kfree(ew);
spin_lock_bh(&ibdev->iboe.lock);
for (i = 0; i < MLX4_MAX_PORTS; ++i) {
struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
enum ib_port_state curr_port_state;
if (!curr_netdev)
continue;
curr_port_state =
(netif_running(curr_netdev) &&
netif_carrier_ok(curr_netdev)) ?
IB_PORT_ACTIVE : IB_PORT_DOWN;
bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
curr_port_state : IB_PORT_ACTIVE;
}
spin_unlock_bh(&ibdev->iboe.lock);
ibev.device = &ibdev->ib_dev;
ibev.element.port_num = 1;
ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
ib_dispatch_event(&ibev);
}
static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
enum mlx4_dev_event event, unsigned long param)
{
struct ib_event ibev;
struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
struct mlx4_eqe *eqe = NULL;
struct ib_event_work *ew;
int p = 0;
if (mlx4_is_bonded(dev) &&
((event == MLX4_DEV_EVENT_PORT_UP) ||
(event == MLX4_DEV_EVENT_PORT_DOWN))) {
ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
if (!ew)
return;
INIT_WORK(&ew->work, handle_bonded_port_state_event);
ew->ib_dev = ibdev;
queue_work(wq, &ew->work);
return;
}
if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
eqe = (struct mlx4_eqe *)param;
else
p = (int) param;
switch (event) {
case MLX4_DEV_EVENT_PORT_UP:
if (p > ibdev->num_ports)
return;
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);
}
ibev.event = IB_EVENT_PORT_ACTIVE;
break;
case MLX4_DEV_EVENT_PORT_DOWN:
if (p > ibdev->num_ports)
return;
ibev.event = IB_EVENT_PORT_ERR;
break;
case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
ibdev->ib_active = false;
ibev.event = IB_EVENT_DEVICE_FATAL;
mlx4_ib_handle_catas_error(ibdev);
break;
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;
/* 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);
return;
case MLX4_DEV_EVENT_SLAVE_INIT:
/* here, p is the slave id */
do_slave_init(ibdev, p, 1);
if (mlx4_is_master(dev)) {
int i;
for (i = 1; i <= ibdev->num_ports; i++) {
if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
== IB_LINK_LAYER_INFINIBAND)
mlx4_ib_slave_alias_guid_event(ibdev,
p, i,
1);
}
}
return;
case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
if (mlx4_is_master(dev)) {
int i;
for (i = 1; i <= ibdev->num_ports; i++) {
if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
== IB_LINK_LAYER_INFINIBAND)
mlx4_ib_slave_alias_guid_event(ibdev,
p, i,
0);
}
}
/* here, p is the slave id */
do_slave_init(ibdev, p, 0);
return;
default:
return;
}
ibev.device = ibdev_ptr;
ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
ib_dispatch_event(&ibev);
}
static struct mlx4_interface mlx4_ib_interface = {
.add = mlx4_ib_add,
.remove = mlx4_ib_remove,
.event = mlx4_ib_event,
.protocol = MLX4_PROT_IB_IPV6,
.flags = MLX4_INTFF_BONDING
};
static int __init mlx4_ib_init(void)
{
int err;
wq = create_singlethread_workqueue("mlx4_ib");
if (!wq)
return -ENOMEM;
err = mlx4_ib_mcg_init();
if (err)
goto clean_wq;
err = mlx4_register_interface(&mlx4_ib_interface);
if (err)
goto clean_mcg;
return 0;
clean_mcg:
mlx4_ib_mcg_destroy();
clean_wq:
destroy_workqueue(wq);
return err;
}
static void __exit mlx4_ib_cleanup(void)
{
mlx4_unregister_interface(&mlx4_ib_interface);
mlx4_ib_mcg_destroy();
destroy_workqueue(wq);
}
module_init(mlx4_ib_init);
module_exit(mlx4_ib_cleanup);