diff options
author | Ursula Braun <ubraun@linux.vnet.ibm.com> | 2017-01-09 16:55:17 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-01-09 16:07:39 -0500 |
commit | 0cfdd8f92cac01afbb12e4500514036a2b78756b (patch) | |
tree | f868a5e65725183509466c9cf16b0a343115c057 /net/smc/smc_clc.c | |
parent | a046d57da19f812216f393e7c535f5858f793ac3 (diff) | |
download | linux-0cfdd8f92cac01afbb12e4500514036a2b78756b.tar.bz2 |
smc: connection and link group creation
* create smc_connection for SMC-sockets
* determine suitable link group for a connection
* create a new link group if necessary
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_clc.c')
-rw-r--r-- | net/smc/smc_clc.c | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c index b613b866a2ef..f8e47c06d2ed 100644 --- a/net/smc/smc_clc.c +++ b/net/smc/smc_clc.c @@ -14,6 +14,7 @@ #include <net/tcp.h> #include "smc.h" +#include "smc_core.h" #include "smc_clc.h" #include "smc_ib.h" @@ -89,8 +90,13 @@ int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen, reason_code = -EPROTO; goto out; } - if (clcm->type == SMC_CLC_DECLINE) + if (clcm->type == SMC_CLC_DECLINE) { reason_code = SMC_CLC_DECL_REPLY; + if (ntohl(((struct smc_clc_msg_decline *)buf)->peer_diagnosis) + == SMC_CLC_DECL_SYNCERR) + smc->conn.lgr->sync_err = true; + } + out: return reason_code; } @@ -175,12 +181,15 @@ int smc_clc_send_proposal(struct smc_sock *smc, /* send CLC CONFIRM message across internal TCP socket */ int smc_clc_send_confirm(struct smc_sock *smc) { + struct smc_connection *conn = &smc->conn; struct smc_clc_msg_accept_confirm cclc; + struct smc_link *link; int reason_code = 0; struct msghdr msg; struct kvec vec; int len; + link = &conn->lgr->lnk[SMC_SINGLE_LINK]; /* send SMC Confirm CLC msg */ memset(&cclc, 0, sizeof(cclc)); memcpy(cclc.hdr.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER)); @@ -188,12 +197,18 @@ int smc_clc_send_confirm(struct smc_sock *smc) cclc.hdr.length = htons(sizeof(cclc)); cclc.hdr.version = SMC_CLC_V1; /* SMC version */ memcpy(cclc.lcl.id_for_peer, local_systemid, sizeof(local_systemid)); - - /* tbd in follow-on patch: fill in link-related values */ + memcpy(&cclc.lcl.gid, &link->smcibdev->gid[link->ibport - 1], + SMC_GID_SIZE); + memcpy(&cclc.lcl.mac, &link->smcibdev->mac[link->ibport - 1], + sizeof(link->smcibdev->mac)); /* tbd in follow-on patch: fill in rmb-related values */ + hton24(cclc.qpn, link->roce_qp->qp_num); cclc.conn_idx = 1; /* for now: 1 RMB = 1 RMBE */ + cclc.rmbe_alert_token = htonl(conn->alert_token_local); + cclc.qp_mtu = min(link->path_mtu, link->peer_mtu); + hton24(cclc.psn, link->psn_initial); memcpy(cclc.trl.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER)); @@ -214,26 +229,37 @@ int smc_clc_send_confirm(struct smc_sock *smc) } /* send CLC ACCEPT message across internal TCP socket */ -int smc_clc_send_accept(struct smc_sock *new_smc) +int smc_clc_send_accept(struct smc_sock *new_smc, int srv_first_contact) { + struct smc_connection *conn = &new_smc->conn; struct smc_clc_msg_accept_confirm aclc; + struct smc_link *link; struct msghdr msg; struct kvec vec; int rc = 0; int len; + link = &conn->lgr->lnk[SMC_SINGLE_LINK]; memset(&aclc, 0, sizeof(aclc)); memcpy(aclc.hdr.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER)); aclc.hdr.type = SMC_CLC_ACCEPT; aclc.hdr.length = htons(sizeof(aclc)); aclc.hdr.version = SMC_CLC_V1; /* SMC version */ + if (srv_first_contact) + aclc.hdr.flag = 1; memcpy(aclc.lcl.id_for_peer, local_systemid, sizeof(local_systemid)); - - /* tbd in follow-on patch: fill in link-related values */ + memcpy(&aclc.lcl.gid, &link->smcibdev->gid[link->ibport - 1], + SMC_GID_SIZE); + memcpy(&aclc.lcl.mac, link->smcibdev->mac[link->ibport - 1], + sizeof(link->smcibdev->mac[link->ibport - 1])); /* tbd in follow-on patch: fill in rmb-related values */ + hton24(aclc.qpn, link->roce_qp->qp_num); aclc.conn_idx = 1; /* as long as 1 RMB = 1 RMBE */ + aclc.rmbe_alert_token = htonl(conn->alert_token_local); + aclc.qp_mtu = link->path_mtu; + hton24(aclc.psn, link->psn_initial); memcpy(aclc.trl.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER)); memset(&msg, 0, sizeof(msg)); |