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RDMA/mlx5: RDMA_RX flow type support for user applications

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Currently user applications can only steer TCP/IP(NIC RX/RX) traffic.
This patch adds RDMA_RX as a new flow type to allow the user to insert
steering rules to control RDMA traffic.
Two destinations are supported(but not set at the same time): devx
flow table object and QP.

Signed-off-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Link: https://lore.kernel.org/r/20190819113626.20284-4-leon@kernel.org
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mark Zhang 2019-08-19 14:36:26 +03:00 committed by Doug Ledford
parent 973ca46d5c
commit d8abe88450
4 changed files with 20 additions and 2 deletions
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13
drivers/infiniband/hw/mlx5/flow.c
View File

@ -32,6 +32,9 @@ mlx5_ib_ft_type_to_namespace(enum mlx5_ib_uapi_flow_table_type table_type,
case MLX5_IB_UAPI_FLOW_TABLE_TYPE_FDB:
*namespace = MLX5_FLOW_NAMESPACE_FDB;
break;
case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_RX:
*namespace = MLX5_FLOW_NAMESPACE_RDMA_RX;
break;
default:
return -EINVAL;
}
@ -101,6 +104,11 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB && !dest_devx)
return -EINVAL;
/* Allow only DEVX object or QP as dest when inserting to RDMA_RX */
if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
((!dest_devx && !dest_qp) || (dest_devx && dest_qp)))
return -EINVAL;
if (dest_devx) {
devx_obj = uverbs_attr_get_obj(
attrs, MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
@ -112,8 +120,9 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
*/
if (!mlx5_ib_devx_is_flow_dest(devx_obj, &dest_id, &dest_type))
return -EINVAL;
/* Allow only flow table as dest when inserting to FDB */
if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB &&
/* Allow only flow table as dest when inserting to FDB or RDMA_RX */
if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB ||
fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
dest_type != MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
return -EINVAL;
} else if (dest_qp) {

7
drivers/infiniband/hw/mlx5/main.c
View File

@ -3963,6 +3963,11 @@ _get_flow_table(struct mlx5_ib_dev *dev,
esw_encap)
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
priority = FDB_BYPASS_PATH;
} else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) {
max_table_size =
BIT(MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev,
log_max_ft_size));
priority = fs_matcher->priority;
}
max_table_size = min_t(int, max_table_size, MLX5_FS_MAX_ENTRIES);
@ -3977,6 +3982,8 @@ _get_flow_table(struct mlx5_ib_dev *dev,
prio = &dev->flow_db->egress_prios[priority];
else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB)
prio = &dev->flow_db->fdb;
else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX)
prio = &dev->flow_db->rdma_rx[priority];
if (!prio)
return ERR_PTR(-EINVAL);

1
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -200,6 +200,7 @@ struct mlx5_ib_flow_db {
struct mlx5_ib_flow_prio sniffer[MLX5_IB_NUM_SNIFFER_FTS];
struct mlx5_ib_flow_prio egress[MLX5_IB_NUM_EGRESS_FTS];
struct mlx5_ib_flow_prio fdb;
struct mlx5_ib_flow_prio rdma_rx[MLX5_IB_NUM_FLOW_FT];
struct mlx5_flow_table *lag_demux_ft;
/* Protect flow steering bypass flow tables
* when add/del flow rules.

1
include/uapi/rdma/mlx5_user_ioctl_verbs.h
View File

@ -43,6 +43,7 @@ enum mlx5_ib_uapi_flow_table_type {
MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX = 0x0,
MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX = 0x1,
MLX5_IB_UAPI_FLOW_TABLE_TYPE_FDB = 0x2,
MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_RX = 0x3,
};
enum mlx5_ib_uapi_flow_action_packet_reformat_type {