libibverbs: Add API to retrieve eth link layer address
PATCH v8 3/4 libibverbs: Add API to retrieve eth link layer address
Add a command to retrieve the layer 2 address of an ethernet port. The layer 2 address is comprised of the port's MAC address and the VLAN ID.This is required by libraries to build work requests when the port's link layer is Ethernet.
Signed-off-by Eli Cohen <eli-VPRAkNaXOzVS1MOuV/[email protected]>
--- include/infiniband/driver.h | 2 ++ include/infiniband/kern-abi.h | 23 ++++++++++++++++++++++- src/cmd.c | 24 ++++++++++++++++++++++++ src/libibverbs.map | 1 + 4 files changed, 49 insertions(+), 1 deletions(-)
include/infiniband/driver.h +2 -0
@@ -131,6 +131,8 @@ int ibv_cmd_create_ah(struct ibv_pd *pd, struct ibv_ah *ah,int ibv_cmd_destroy_ah (struct ibv_ah *ah);int ibv_cmd_attach_mcast (struct ibv_qp *qp,const union ibv_gid *gid,uint16_t lid);int ibv_cmd_detach_mcast (struct ibv_qp *qp,const union ibv_gid *gid,uint16_t lid); +int ibv_cmd_get_eth_l2_addr (struct ibv_pd *pd,uint8_t port,const union ibv_gid *gid, +int sgid_idx,uint8_t *mac,uint16_t *vlan_id,uint8_t *tagged);int ibv_dontfork_range (void *base,size_t size);int ibv_dofork_range (void *base,size_t size);
include/infiniband/kern-abi.h +22 -1
@@ -85,7 +85,8 @@ enum {IB_USER_VERBS_CMD_MODIFY_SRQ ,IB_USER_VERBS_CMD_QUERY_SRQ ,IB_USER_VERBS_CMD_DESTROY_SRQ , - IB_USER_VERBS_CMD_POST_SRQ_RECV +IB_USER_VERBS_CMD_POST_SRQ_RECV , + IB_USER_VERBS_CMD_GET_ETH_L2_ADDR, };/*
@@ -804,6 +805,7 @@ enum {* trick opcodes in IBV_INIT_CMD() doesn't break. */ IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL_V2 =-1 , + IB_USER_VERBS_CMD_GET_ETH_L2_ADDR_V2 = -1, }; struct ibv_destroy_cq_v1 {
@@ -879,4 +881,23 @@ struct ibv_create_srq_resp_v5 { __u32 srq_handle; }; +struct ibv_get_eth_l2_addr { +__u32 command; +__u16 in_words; +__u16 out_words; +__u64 response; +__u32 pd_handle; +__u8 port; +__u8 sgid_idx; +__u8 reserved[2 ]; +__u8 dgid[16 ]; +}; + +struct ibv_get_eth_l2_addr_resp { +__u8 mac[6 ]; +__u16 vlan_id; +__u8 tagged; +__u8 reserved[3 ]; +}; +#endif /* KERN_ABI_H */
src/cmd.c +24 -0
@@ -1123,3 +1123,27 @@ int ibv_cmd_detach_mcast(struct ibv_qp *qp, const union ibv_gid *gid, uint16_t lreturn 0 ; } + +int ibv_cmd_get_eth_l2_addr (struct ibv_pd *pd,uint8_t port,const union ibv_gid *gid, +int sgid_idx,uint8_t *mac,uint16_t *vlan_id,uint8_t *tagged) + +{ +struct ibv_get_eth_l2_addr cmd; +struct ibv_get_eth_l2_addr_resp resp; + +IBV_INIT_CMD_RESP (&cmd,sizeof cmd,GET_ETH_L2_ADDR , &resp,sizeof resp); +memcpy (cmd.dgid, gid,sizeof cmd.dgid); + cmd.pd_handle = pd->handle; + cmd.port = port; + cmd.sgid_idx = sgid_idx; + +if (write (pd->context->cmd_fd, &cmd,sizeof cmd) !=sizeof cmd) +return errno; + +memcpy (mac, resp.mac,6 ); + *vlan_id = resp.vlan_id; + *tagged = resp.tagged; + +return 0 ; +} +
src/libibverbs.map +1 -0
@@ -64,6 +64,7 @@ IBVERBS_1.0 { ibv_cmd_destroy_ah; ibv_cmd_attach_mcast; ibv_cmd_detach_mcast; + ibv_cmd_get_eth_l2_addr; ibv_copy_qp_attr_from_kern; ibv_copy_path_rec_from_kern; ibv_copy_path_rec_to_kern;
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