From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:3462 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727778AbgEBMgR (ORCPT ); Sat, 2 May 2020 08:36:17 -0400 From: Karsten Graul Subject: [PATCH net-next 06/13] net/smc: final part of add link processing as SMC server Date: Sat, 2 May 2020 14:35:45 +0200 Message-Id: <20200502123552.17204-7-kgraul@linux.ibm.com> In-Reply-To: <20200502123552.17204-1-kgraul@linux.ibm.com> References: <20200502123552.17204-1-kgraul@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, heiko.carstens@de.ibm.com, raspl@linux.ibm.com, ubraun@linux.ibm.com This patch finalizes the ADD_LINK processing of new links. Send the CONFIRM_LINK request to the peer, receive the response and set link state to ACTIVE. Signed-off-by: Karsten Graul Reviewed-by: Ursula Braun --- net/smc/smc_llc.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c index e1d61b6b083b..20ce29b88b50 100644 --- a/net/smc/smc_llc.c +++ b/net/smc/smc_llc.c @@ -904,6 +904,33 @@ static int smc_llc_srv_rkey_exchange(struct smc_link *link, return rc; } +static int smc_llc_srv_conf_link(struct smc_link *link, + struct smc_link *link_new, + enum smc_lgr_type lgr_new_t) +{ + struct smc_link_group *lgr = link->lgr; + struct smc_llc_qentry *qentry = NULL; + int rc; + + /* send CONFIRM LINK request over the RoCE fabric */ + rc = smc_llc_send_confirm_link(link_new, SMC_LLC_REQ); + if (rc) + return -ENOLINK; + /* receive CONFIRM LINK response over the RoCE fabric */ + qentry = smc_llc_wait(lgr, link, SMC_LLC_WAIT_FIRST_TIME, + SMC_LLC_CONFIRM_LINK); + if (!qentry) { + /* send DELETE LINK */ + smc_llc_send_delete_link(link, link_new->link_id, SMC_LLC_REQ, + false, SMC_LLC_DEL_LOST_PATH); + return -ENOLINK; + } + smc_llc_link_active(link_new); + lgr->type = lgr_new_t; + smc_llc_flow_qentry_del(&lgr->llc_flow_lcl); + return 0; +} + int smc_llc_srv_add_link(struct smc_link *link) { enum smc_lgr_type lgr_new_t = SMC_LGR_SYMMETRIC; @@ -967,7 +994,7 @@ int smc_llc_srv_add_link(struct smc_link *link) rc = smc_llc_srv_rkey_exchange(link, link_new); if (rc) goto out_err; - /* tbd: rc = smc_llc_srv_conf_link(link, link_new, lgr_new_t); */ + rc = smc_llc_srv_conf_link(link, link_new, lgr_new_t); if (rc) goto out_err; return 0; -- 2.17.1