diff options
| author | Junxian Huang <huangjunxian6@hisilicon.com> | 2023-12-07 19:42:28 +0800 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2023-12-07 15:09:16 +0200 |
| commit | d3f4020a213e1cb125eed2363fca372a23f7de7a (patch) | |
| tree | 0c06f75083f4ec1e6d8d199dd20c984abda06c77 | |
| parent | 95f6b40082aaf37fd0553828982402af36f81685 (diff) | |
RDMA/hns: Response dmac to userspace
While creating AH, dmac is already resolved in kernel. Response dmac
to userspace so that userspace doesn't need to resolve dmac repeatedly.
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://lore.kernel.org/r/20231207114231.2872104-3-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_ah.c | 7 | ||||
| -rw-r--r-- | include/uapi/rdma/hns-abi.h | 5 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c index fbf046982374..b4209b6aed8d 100644 --- a/drivers/infiniband/hw/hns/hns_roce_ah.c +++ b/drivers/infiniband/hw/hns/hns_roce_ah.c @@ -57,6 +57,7 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, struct rdma_ah_attr *ah_attr = init_attr->ah_attr; const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr); struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device); + struct hns_roce_ib_create_ah_resp resp = {}; struct hns_roce_ah *ah = to_hr_ah(ibah); int ret = 0; u32 max_sl; @@ -97,6 +98,12 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID; } + if (udata) { + memcpy(resp.dmac, ah_attr->roce.dmac, ETH_ALEN); + ret = ib_copy_to_udata(udata, &resp, + min(udata->outlen, sizeof(resp))); + } + err_out: if (ret) atomic64_inc(&hr_dev->dfx_cnt[HNS_ROCE_DFX_AH_CREATE_ERR_CNT]); diff --git a/include/uapi/rdma/hns-abi.h b/include/uapi/rdma/hns-abi.h index ce0f37f83416..c996e151081e 100644 --- a/include/uapi/rdma/hns-abi.h +++ b/include/uapi/rdma/hns-abi.h @@ -125,4 +125,9 @@ struct hns_roce_ib_alloc_pd_resp { __u32 pdn; }; +struct hns_roce_ib_create_ah_resp { + __u8 dmac[6]; + __u8 reserved[2]; +}; + #endif /* HNS_ABI_USER_H */ |