net/smc: save SMC-R peer link_uid
During SMC-R link establishment the peers exchange the link_uid that is used for debugging purposes. Save the peer link_uid in smc_link so it can be retrieved by the smc_diag netlink interface. Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Reviewed-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -390,6 +390,7 @@ static int smcr_clnt_conf_first_link(struct smc_sock *smc)
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SMC_CLC_DECLINE, CLC_WAIT_TIME_SHORT);
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return rc == -EAGAIN ? SMC_CLC_DECL_TIMEOUT_CL : rc;
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}
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smc_llc_save_peer_uid(qentry);
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rc = smc_llc_eval_conf_link(qentry, SMC_LLC_REQ);
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smc_llc_flow_qentry_del(&link->lgr->llc_flow_lcl);
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if (rc)
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@ -1056,6 +1057,7 @@ static int smcr_serv_conf_first_link(struct smc_sock *smc)
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SMC_CLC_DECLINE, CLC_WAIT_TIME_SHORT);
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return rc == -EAGAIN ? SMC_CLC_DECL_TIMEOUT_CL : rc;
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}
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smc_llc_save_peer_uid(qentry);
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rc = smc_llc_eval_conf_link(qentry, SMC_LLC_RESP);
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smc_llc_flow_qentry_del(&link->lgr->llc_flow_lcl);
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if (rc)
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@ -119,6 +119,7 @@ struct smc_link {
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u8 peer_gid[SMC_GID_SIZE]; /* gid of peer*/
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u8 link_id; /* unique # within link group */
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u8 link_uid[SMC_LGR_ID_SIZE]; /* unique lnk id */
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u8 peer_link_uid[SMC_LGR_ID_SIZE]; /* peer uid */
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u8 link_idx; /* index in lgr link array */
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u8 link_is_asym; /* is link asymmetric? */
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struct smc_link_group *lgr; /* parent link group */
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@ -770,6 +770,7 @@ static int smc_llc_cli_conf_link(struct smc_link *link,
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smc_llc_flow_qentry_del(&lgr->llc_flow_lcl);
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return -ENOLINK;
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}
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smc_llc_save_peer_uid(qentry);
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smc_llc_flow_qentry_del(&lgr->llc_flow_lcl);
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rc = smc_ib_modify_qp_rts(link_new);
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@ -1041,6 +1042,7 @@ static int smc_llc_srv_conf_link(struct smc_link *link,
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false, SMC_LLC_DEL_LOST_PATH);
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return -ENOLINK;
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}
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smc_llc_save_peer_uid(qentry);
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smc_llc_link_active(link_new);
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if (lgr_new_t == SMC_LGR_ASYMMETRIC_LOCAL ||
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lgr_new_t == SMC_LGR_ASYMMETRIC_PEER)
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@ -1783,6 +1785,13 @@ void smc_llc_link_set_uid(struct smc_link *link)
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memcpy(link->link_uid, &link_uid, SMC_LGR_ID_SIZE);
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}
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/* save peers link user id, used for debug purposes */
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void smc_llc_save_peer_uid(struct smc_llc_qentry *qentry)
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{
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memcpy(qentry->link->peer_link_uid, qentry->msg.confirm_link.link_uid,
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SMC_LGR_ID_SIZE);
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}
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/* evaluate confirm link request or response */
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int smc_llc_eval_conf_link(struct smc_llc_qentry *qentry,
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enum smc_llc_reqresp type)
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@ -93,6 +93,7 @@ void smc_llc_flow_stop(struct smc_link_group *lgr, struct smc_llc_flow *flow);
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int smc_llc_eval_conf_link(struct smc_llc_qentry *qentry,
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enum smc_llc_reqresp type);
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void smc_llc_link_set_uid(struct smc_link *link);
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void smc_llc_save_peer_uid(struct smc_llc_qentry *qentry);
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struct smc_llc_qentry *smc_llc_wait(struct smc_link_group *lgr,
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struct smc_link *lnk,
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int time_out, u8 exp_msg);
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