diff options
| author | Mark Zhang <markz@mellanox.com> | 2020-05-04 08:19:35 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-05-06 22:51:44 +0300 |
| commit | 5ac55dfc6d92c12d5ef423cd16165eb0350f8f51 (patch) | |
| tree | b3279b993aab63db6d55f780c5abc2090351cbb7 /drivers/infiniband/hw/mlx5/ah.c | |
| parent | f66534051936044728e2be9937eb408494ca4007 (diff) | |
| download | linux-5ac55dfc6d92c12d5ef423cd16165eb0350f8f51.tar.xz | |
RDMA/mlx5: Set UDP source port based on the grh.flow_label
Calculate UDP source port based on the grh.flow_label. If grh.flow_label
is not valid, we will use minimal supported UDP source port.
Link: https://lore.kernel.org/r/20200504051935.269708-6-leon@kernel.org
Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/ah.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/ah.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/ah.c b/drivers/infiniband/hw/mlx5/ah.c index cc858f658567..59e5ec39b447 100644 --- a/drivers/infiniband/hw/mlx5/ah.c +++ b/drivers/infiniband/hw/mlx5/ah.c @@ -32,6 +32,24 @@ #include "mlx5_ib.h" +static __be16 mlx5_ah_get_udp_sport(const struct mlx5_ib_dev *dev, + const struct rdma_ah_attr *ah_attr) +{ + enum ib_gid_type gid_type = ah_attr->grh.sgid_attr->gid_type; + __be16 sport; + + if ((gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) && + (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) && + (ah_attr->grh.flow_label & IB_GRH_FLOWLABEL_MASK)) + sport = cpu_to_be16( + rdma_flow_label_to_udp_sport(ah_attr->grh.flow_label)); + else + sport = mlx5_get_roce_udp_sport_min(dev, + ah_attr->grh.sgid_attr); + + return sport; +} + static void create_ib_ah(struct mlx5_ib_dev *dev, struct mlx5_ib_ah *ah, struct rdma_ah_init_attr *init_attr) { @@ -60,8 +78,7 @@ static void create_ib_ah(struct mlx5_ib_dev *dev, struct mlx5_ib_ah *ah, memcpy(ah->av.rmac, ah_attr->roce.dmac, sizeof(ah_attr->roce.dmac)); - ah->av.udp_sport = - mlx5_get_roce_udp_sport(dev, ah_attr->grh.sgid_attr); + ah->av.udp_sport = mlx5_ah_get_udp_sport(dev, ah_attr); ah->av.stat_rate_sl |= (rdma_ah_get_sl(ah_attr) & 0x7) << 1; if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) #define MLX5_ECN_ENABLED BIT(1) |