diff options
| -rw-r--r-- | drivers/infiniband/hw/mlx5/ah.c | 21 | ||||
| -rw-r--r-- | include/uapi/rdma/mlx5-abi.h | 6 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/ah.c b/drivers/infiniband/hw/mlx5/ah.c index ecac9ea2c85f..d090e96f6f01 100644 --- a/drivers/infiniband/hw/mlx5/ah.c +++ b/drivers/infiniband/hw/mlx5/ah.c @@ -77,6 +77,27 @@ struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr, if (ll == IB_LINK_LAYER_ETHERNET && !(ah_attr->ah_flags & IB_AH_GRH)) return ERR_PTR(-EINVAL); + if (ll == IB_LINK_LAYER_ETHERNET && udata) { + int err; + struct mlx5_ib_create_ah_resp resp = {}; + u32 min_resp_len = offsetof(typeof(resp), dmac) + + sizeof(resp.dmac); + + if (udata->outlen < min_resp_len) + return ERR_PTR(-EINVAL); + + resp.response_length = min_resp_len; + + err = ib_resolve_eth_dmac(pd->device, ah_attr); + if (err) + return ERR_PTR(err); + + memcpy(resp.dmac, ah_attr->dmac, ETH_ALEN); + err = ib_copy_to_udata(udata, &resp, resp.response_length); + if (err) + return ERR_PTR(err); + } + ah = kzalloc(sizeof(*ah), GFP_ATOMIC); if (!ah) return ERR_PTR(-ENOMEM); diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h index ac28729a1245..3ebf3db24c34 100644 --- a/include/uapi/rdma/mlx5-abi.h +++ b/include/uapi/rdma/mlx5-abi.h @@ -249,6 +249,12 @@ struct mlx5_ib_create_wq { __u32 reserved; }; +struct mlx5_ib_create_ah_resp { + __u32 response_length; + __u8 dmac[ETH_ALEN]; + __u8 reserved[6]; +}; + struct mlx5_ib_create_wq_resp { __u32 response_length; __u32 reserved; |