* [PATCH rdma-next 1/2] IB/mlx4: Add support to RSS hash for inner headers
[not found] ` <20171224125125.15661-1-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
@ 2017-12-24 12:51 ` Leon Romanovsky
2017-12-24 12:51 ` [PATCH rdma-next 2/2] IB/mlx5: Report inner RSS capability Leon Romanovsky
2017-12-28 20:00 ` [PATCH rdma-next 0/2] mlx4/mlx5 RSS improvements Jason Gunthorpe
2 siblings, 0 replies; 4+ messages in thread
From: Leon Romanovsky @ 2017-12-24 12:51 UTC (permalink / raw)
To: Doug Ledford, Jason Gunthorpe
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA, Guy Levi, Maor Gottlieb, Yishai Hadas
From: Guy Levi <guyle-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
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-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Yishai Hadas <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
drivers/infiniband/hw/mlx4/main.c | 6 ++++++
drivers/infiniband/hw/mlx4/qp.c | 14 ++++++++++++++
include/uapi/rdma/mlx4-abi.h | 7 ++++---
3 files changed, 24 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 8c8a16791a3f..5695ce53fddb 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;
}
}
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 16dea0e3d50f..c305189eb4af 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -722,6 +722,20 @@ static int set_qp_rss(struct mlx4_ib_dev *dev, struct mlx4_ib_rss *rss_ctx,
return (-EOPNOTSUPP);
}
+ if (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_INNER) {
+ if (dev->dev->caps.tunnel_offload_mode ==
+ MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
+ /*
+ * Hash according to inner headers if exist, otherwise
+ * according to outer headers.
+ */
+ rss_ctx->flags |= MLX4_RSS_BY_INNER_HEADERS_IPONLY;
+ } else {
+ pr_debug("RSS Hash for inner headers isn't supported\n");
+ return (-EOPNOTSUPP);
+ }
+ }
+
return 0;
}
diff --git a/include/uapi/rdma/mlx4-abi.h b/include/uapi/rdma/mlx4-abi.h
index 224b52b6279c..7f9c37346613 100644
--- a/include/uapi/rdma/mlx4-abi.h
+++ b/include/uapi/rdma/mlx4-abi.h
@@ -97,8 +97,8 @@ struct mlx4_ib_create_srq_resp {
};
struct mlx4_ib_create_qp_rss {
- __u64 rx_hash_fields_mask;
- __u8 rx_hash_function;
+ __u64 rx_hash_fields_mask; /* Use enum mlx4_ib_rx_hash_fields */
+ __u8 rx_hash_function; /* Use enum mlx4_ib_rx_hash_function_flags */
__u8 reserved[7];
__u8 rx_hash_key[40];
__u32 comp_mask;
@@ -152,7 +152,8 @@ enum mlx4_ib_rx_hash_fields {
MLX4_IB_RX_HASH_SRC_PORT_TCP = 1 << 4,
MLX4_IB_RX_HASH_DST_PORT_TCP = 1 << 5,
MLX4_IB_RX_HASH_SRC_PORT_UDP = 1 << 6,
- MLX4_IB_RX_HASH_DST_PORT_UDP = 1 << 7
+ MLX4_IB_RX_HASH_DST_PORT_UDP = 1 << 7,
+ MLX4_IB_RX_HASH_INNER = 1ULL << 31,
};
#endif /* MLX4_ABI_USER_H */
--
2.15.1
--
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^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH rdma-next 2/2] IB/mlx5: Report inner RSS capability
[not found] ` <20171224125125.15661-1-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2017-12-24 12:51 ` [PATCH rdma-next 1/2] IB/mlx4: Add support to RSS hash for inner headers Leon Romanovsky
@ 2017-12-24 12:51 ` Leon Romanovsky
2017-12-28 20:00 ` [PATCH rdma-next 0/2] mlx4/mlx5 RSS improvements Jason Gunthorpe
2 siblings, 0 replies; 4+ messages in thread
From: Leon Romanovsky @ 2017-12-24 12:51 UTC (permalink / raw)
To: Doug Ledford, Jason Gunthorpe
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA, Guy Levi, Maor Gottlieb, Yishai Hadas
From: Maor Gottlieb <maorg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Add missing inner RSS support capability as part of
the RSS supported fields.
In addition change MLX5_RX_HASH_INNER to 1UL << 31 in
order to define it as unsigned.
Fixes: 309fa3470fca ("IB/mlx5: Add support for RSS on the inner packet")
Signed-off-by: Maor Gottlieb <maorg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
drivers/infiniband/hw/mlx5/main.c | 3 ++-
include/uapi/rdma/mlx5-abi.h | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 6775e440e23f..96cc51455b09 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -682,7 +682,8 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
MLX5_RX_HASH_SRC_PORT_TCP |
MLX5_RX_HASH_DST_PORT_TCP |
MLX5_RX_HASH_SRC_PORT_UDP |
- MLX5_RX_HASH_DST_PORT_UDP;
+ MLX5_RX_HASH_DST_PORT_UDP |
+ MLX5_RX_HASH_INNER;
resp.response_length += sizeof(resp.rss_caps);
}
} else {
diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h
index a33e0517d3fd..062d14f07b61 100644
--- a/include/uapi/rdma/mlx5-abi.h
+++ b/include/uapi/rdma/mlx5-abi.h
@@ -307,7 +307,7 @@ enum mlx5_rx_hash_fields {
MLX5_RX_HASH_SRC_PORT_UDP = 1 << 6,
MLX5_RX_HASH_DST_PORT_UDP = 1 << 7,
/* Save bits for future fields */
- MLX5_RX_HASH_INNER = 1 << 31
+ MLX5_RX_HASH_INNER = (1UL << 31),
};
struct mlx5_ib_create_qp_rss {
--
2.15.1
--
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^ permalink raw reply related [flat|nested] 4+ messages in thread