From: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Some user space application would like to do RSS on the inner
packet fields instead on the outer.
When MLX5_RX_HASH_INNER is set with one or more of the other
hash fields, then the RSS will be done using the inner packet.
Signed-off-by: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Reviewed-by: Mark Bloch <markb@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/qp.c | 11 +++++++++++
include/uapi/rdma/mlx5-abi.h | 4 +++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 0f1106040a45..c6735a2979a8 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -1405,6 +1405,12 @@ static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
return -EOPNOTSUPP;
}
+ if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER &&
+ !(ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)) {
+ mlx5_ib_dbg(dev, "Tunnel offloads must be set for inner RSS\n");
+ return -EOPNOTSUPP;
+ }
+
err = ib_copy_to_udata(udata, &resp, min_resp_len);
if (err) {
mlx5_ib_dbg(dev, "copy failed\n");
@@ -1428,6 +1434,11 @@ static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
+ if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER)
+ hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner);
+ else
+ hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
+
switch (ucmd.rx_hash_function) {
case MLX5_RX_HASH_FUNC_TOEPLITZ:
{
diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h
index 791655ec4aff..442b46b74a3a 100644
--- a/include/uapi/rdma/mlx5-abi.h
+++ b/include/uapi/rdma/mlx5-abi.h
@@ -303,7 +303,9 @@ enum mlx5_rx_hash_fields {
MLX5_RX_HASH_SRC_PORT_TCP = 1 << 4,
MLX5_RX_HASH_DST_PORT_TCP = 1 << 5,
MLX5_RX_HASH_SRC_PORT_UDP = 1 << 6,
- MLX5_RX_HASH_DST_PORT_UDP = 1 << 7
+ MLX5_RX_HASH_DST_PORT_UDP = 1 << 7,
+ /* Save bits for future fields */
+ MLX5_RX_HASH_INNER = 1 << 31
};
struct mlx5_ib_create_qp_rss {
--
2.14.2
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
