IB/mlx4: Add support to RSS hash for inner headers
Support RSS hash for inner headers according to a new flag,
MLX4_IB_RX_HASH_INNER provided by the vendor channel.
In case the flag is set, RSS hash will be done on the inner headers of
VXLAN packets (which are encapsulated).
Non-encapsulated packets will be hashed according to the outer headers.
Signed-off-by: Guy Levi <guyle@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 8c8a167..5695ce5 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -589,6 +589,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
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 |
@@ -598,6 +599,11 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
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;
}
}