From: Patrisious Haddad phaddad@nvidia.com
commit 1ab52ac1e9bc9391f592c9fa8340a6e3e9c36286 upstream.
Currently, the driver doesn't set the PCP-based priority for DCT, hence DCT response packets are transmitted without user priority.
Fix it by setting user provided priority in the eth_prio field in the DCT context, which in turn sets the value in the transmitted packet.
Fixes: 776a3906b692 ("IB/mlx5: Add support for DC target QP") Link: https://lore.kernel.org/r/5fd2d94a13f5742d8803c218927322257d53205c.163351267... Signed-off-by: Patrisious Haddad phaddad@nvidia.com Reviewed-by: Maor Gottlieb maorg@nvidia.com Signed-off-by: Leon Romanovsky leonro@nvidia.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/hw/mlx5/qp.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -3387,6 +3387,8 @@ static int mlx5_ib_modify_dct(struct ib_ MLX5_SET(dctc, dctc, mtu, attr->path_mtu); MLX5_SET(dctc, dctc, my_addr_index, attr->ah_attr.grh.sgid_index); MLX5_SET(dctc, dctc, hop_limit, attr->ah_attr.grh.hop_limit); + if (attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE) + MLX5_SET(dctc, dctc, eth_prio, attr->ah_attr.sl & 0x7);
err = mlx5_core_create_dct(dev->mdev, &qp->dct.mdct, qp->dct.in, MLX5_ST_SZ_BYTES(create_dct_in));