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main.c
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main.c
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/*
* 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 <linux/sched/mm.h>
#include <linux/sched/task.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 <rdma/mlx4-abi.h>
#define DRV_NAME MLX4_IB_DRV_NAME
#define DRV_VERSION "4.0-0"
#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");
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 "\n";
static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device,
u8 port_num);
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;
}
}
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 void free_gid_entry(struct gid_entry *entry)
{
memset(&entry->gid, 0, sizeof(entry->gid));
kfree(entry->ctx);
entry->ctx = NULL;
}
static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context)
{
struct mlx4_ib_dev *ibdev = to_mdev(attr->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;
u16 vlan_id = 0xffff;
u8 mac[ETH_ALEN];
if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
return -EINVAL;
if (attr->port_num > MLX4_MAX_PORTS)
return -EINVAL;
if (!context)
return -EINVAL;
ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]);
if (ret)
return ret;
port_gid_table = &iboe->gids[attr->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,
&attr->gid, sizeof(attr->gid)) &&
port_gid_table->gids[i].gid_type == attr->gid_type &&
port_gid_table->gids[i].vlan_id == vlan_id) {
found = i;
break;
}
if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].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,
&attr->gid, sizeof(attr->gid));
port_gid_table->gids[free].gid_type = attr->gid_type;
port_gid_table->gids[free].vlan_id = vlan_id;
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_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
GFP_ATOMIC);
if (!gids) {
ret = -ENOMEM;
*context = NULL;
free_gid_entry(&port_gid_table->gids[free]);
} 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, attr->port_num);
if (ret) {
spin_lock_bh(&iboe->lock);
*context = NULL;
free_gid_entry(&port_gid_table->gids[free]);
spin_unlock_bh(&iboe->lock);
}
kfree(gids);
}
return ret;
}
static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context)
{
struct gid_cache_context *ctx = *context;
struct mlx4_ib_dev *ibdev = to_mdev(attr->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(attr->device, attr->port_num))
return -EINVAL;
if (attr->port_num > MLX4_MAX_PORTS)
return -EINVAL;
port_gid_table = &iboe->gids[attr->port_num - 1];
spin_lock_bh(&iboe->lock);
if (ctx) {
ctx->refcount--;
if (!ctx->refcount) {
unsigned int real_index = ctx->real_index;
free_gid_entry(&port_gid_table->gids[real_index]);
hw_update = 1;
}
}
if (!ret && hw_update) {
int i;
gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*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, attr->port_num);
kfree(gids);
}
return ret;
}
int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
const struct ib_gid_attr *attr)
{
struct mlx4_ib_iboe *iboe = &ibdev->iboe;
struct gid_cache_context *ctx = NULL;
struct mlx4_port_gid_table *port_gid_table;
int real_index = -EINVAL;
int i;
unsigned long flags;
u8 port_num = attr->port_num;
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 attr->index;
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,
&attr->gid, sizeof(attr->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;
int have_ib_ports;
struct mlx4_uverbs_ex_query_device cmd;
struct mlx4_uverbs_ex_query_device_resp resp = {};
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);
err = -ENOMEM;
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_send_sge =
min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
props->max_recv_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->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
props->timestamp_mask = 0xFFFFFFFFFFFFULL;
props->max_ah = INT_MAX;
if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) {
if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) {
props->rss_caps.max_rwq_indirection_tables =
props->max_qp;
props->rss_caps.max_rwq_indirection_table_size =
dev->dev->caps.max_rss_tbl_sz;
props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
props->max_wq_type_rq = props->max_qp;
}
if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
}
props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
resp.response_length += sizeof(resp.hca_core_clock_offset);
if (!mlx4_get_internal_clock_params(dev->dev, &clock_params)) {
resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET;
resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
}
}
if (uhw->outlen >= resp.response_length +
sizeof(resp.max_inl_recv_sz)) {
resp.response_length += sizeof(resp.max_inl_recv_sz);
resp.max_inl_recv_sz = dev->dev->caps.max_rq_sg *
sizeof(struct mlx4_wqe_data_seg);
}
if (offsetofend(typeof(resp), rss_caps) <= uhw->outlen) {
if (props->rss_caps.supported_qpts) {
resp.rss_caps.rx_hash_function =
MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
resp.rss_caps.rx_hash_fields_mask =
MLX4_IB_RX_HASH_SRC_IPV4 |
MLX4_IB_RX_HASH_DST_IPV4 |
MLX4_IB_RX_HASH_SRC_IPV6 |
MLX4_IB_RX_HASH_DST_IPV6 |
MLX4_IB_RX_HASH_SRC_PORT_TCP |
MLX4_IB_RX_HASH_DST_PORT_TCP |
MLX4_IB_RX_HASH_SRC_PORT_UDP |
MLX4_IB_RX_HASH_DST_PORT_UDP;
if (dev->dev->caps.tunnel_offload_mode ==
MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
resp.rss_caps.rx_hash_fields_mask |=
MLX4_IB_RX_HASH_INNER;
}
resp.response_length = offsetof(typeof(resp), rss_caps) +
sizeof(resp.rss_caps);
}
if (offsetofend(typeof(resp), tso_caps) <= uhw->outlen) {
if (dev->dev->caps.max_gso_sz &&
((mlx4_ib_port_link_layer(ibdev, 1) ==
IB_LINK_LAYER_ETHERNET) ||
(mlx4_ib_port_link_layer(ibdev, 2) ==
IB_LINK_LAYER_ETHERNET))) {
resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz;
resp.tso_caps.supported_qpts |=
1 << IB_QPT_RAW_PACKET;
}
resp.response_length = offsetof(typeof(resp), tso_caps) +
sizeof(resp.tso_caps);
}
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 ?
IB_PORT_PHYS_STATE_LINK_UP : IB_PORT_PHYS_STATE_DISABLED;
}
static int eth_link_query_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props)
{
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) ||
(((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
IB_WIDTH_4X : IB_WIDTH_1X;
props->active_speed = (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
IB_SPEED_FDR : IB_SPEED_QDR;
props->port_cap_flags = IB_PORT_CM_SUP;
props->ip_gids = true;
props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
props->max_msg_sz = mdev->dev->caps.max_msg_sz;
if (mdev->dev->caps.pkey_table_len[port])
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;
/* props being zeroed by the caller, avoid zeroing it here */
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);
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)
{
if (rdma_protocol_ib(ibdev, port))
return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
return 0;
}
static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
{
union sl2vl_tbl_to_u64 sl2vl64;
struct ib_smp *in_mad = NULL;
struct ib_smp *out_mad = NULL;
int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
int err = -ENOMEM;
int jj;
if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
*sl2vl_tbl = 0;
return 0;
}
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_SL_TO_VL_TABLE;
in_mad->attr_mod = 0;
if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
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;
for (jj = 0; jj < 8; jj++)
sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
*sl2vl_tbl = sl2vl64.sl64;
out:
kfree(in_mad);
kfree(out_mad);
return err;
}
static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
{
u64 sl2vl;
int i;
int err;
for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
continue;
err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
if (err) {
pr_err("Unable to get default sl to vl mapping for port %d. Using all zeroes (%d)\n",
i, err);
sl2vl = 0;
}
atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
}
}
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;