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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>
This commit is contained in:
Mark Zhang 2020-05-04 08:19:35 +03:00 committed by Jason Gunthorpe
parent f665340519
commit 5ac55dfc6d
3 changed files with 23 additions and 6 deletions
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21
drivers/infiniband/hw/mlx5/ah.c
View File

@ -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)

4
drivers/infiniband/hw/mlx5/main.c
View File

@ -629,8 +629,8 @@ static int mlx5_ib_del_gid(const struct ib_gid_attr *attr,
attr->index, NULL, NULL);
}
__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev,
const struct ib_gid_attr *attr)
__be16 mlx5_get_roce_udp_sport_min(const struct mlx5_ib_dev *dev,
const struct ib_gid_attr *attr)
{
if (attr->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
return 0;

4
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -1356,8 +1356,8 @@ int mlx5_ib_get_vf_guid(struct ib_device *device, int vf, u8 port,
int mlx5_ib_set_vf_guid(struct ib_device *device, int vf, u8 port,
u64 guid, int type);
__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev,
const struct ib_gid_attr *attr);
__be16 mlx5_get_roce_udp_sport_min(const struct mlx5_ib_dev *dev,
const struct ib_gid_attr *attr);
void mlx5_ib_cleanup_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);
void mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);