diff options
| author | Majd Dibbiny <majd@mellanox.com> | 2017-10-07 22:36:47 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-08 09:08:33 (GMT) |
| commit | 80eabac6c53aeca0447934bec65fb97449c6b85f (patch) | |
| tree | 5be1ea358a3692d774f6b33d7fdab10e26db2662 /drivers | |
| parent | 733ab05adc1eb37e828bdd51b65704413ca25154 (diff) | |
| download | linux-80eabac6c53aeca0447934bec65fb97449c6b85f.tar.xz | |
IB/mlx5: Assign DSCP for R-RoCE QPs Address Path
[ Upstream commit ed88451e1f2d400fd6a743d0a481631cf9f97550 ]
For Routable RoCE QPs, the DSCP should be set in the QP's
address path.
The DSCP's value is derived from the traffic class.
Fixes: 2811ba51b049 ("IB/mlx5: Add RoCE fields to Address Vector")
Cc: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 21 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 7 |
3 files changed, 30 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 282c9fb..786f640 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -325,6 +325,27 @@ __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num, return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port)); } +int mlx5_get_roce_gid_type(struct mlx5_ib_dev *dev, u8 port_num, + int index, enum ib_gid_type *gid_type) +{ + struct ib_gid_attr attr; + union ib_gid gid; + int ret; + + ret = ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr); + if (ret) + return ret; + + if (!attr.ndev) + return -ENODEV; + + dev_put(attr.ndev); + + *gid_type = attr.gid_type; + + return 0; +} + static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev) { if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB) diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 7d68990..86e1e08 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -892,6 +892,8 @@ int mlx5_ib_set_vf_guid(struct ib_device *device, int vf, u8 port, __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num, int index); +int mlx5_get_roce_gid_type(struct mlx5_ib_dev *dev, u8 port_num, + int index, enum ib_gid_type *gid_type); /* GSI QP helper functions */ struct ib_qp *mlx5_ib_gsi_create_qp(struct ib_pd *pd, diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index aee3942..2665414 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -2226,6 +2226,7 @@ static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, { enum rdma_link_layer ll = rdma_port_get_link_layer(&dev->ib_dev, port); int err; + enum ib_gid_type gid_type; if (attr_mask & IB_QP_PKEY_INDEX) path->pkey_index = cpu_to_be16(alt ? attr->alt_pkey_index : @@ -2244,10 +2245,16 @@ static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, if (ll == IB_LINK_LAYER_ETHERNET) { if (!(ah->ah_flags & IB_AH_GRH)) return -EINVAL; + err = mlx5_get_roce_gid_type(dev, port, ah->grh.sgid_index, + &gid_type); + if (err) + return err; memcpy(path->rmac, ah->dmac, sizeof(ah->dmac)); path->udp_sport = mlx5_get_roce_udp_sport(dev, port, ah->grh.sgid_index); path->dci_cfi_prio_sl = (ah->sl & 0x7) << 4; + if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) + path->ecn_dscp = (ah->grh.traffic_class >> 2) & 0x3f; } else { path->fl_free_ar = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0; path->fl_free_ar |= |