From: Ursula Braun <ubraun@linux.vnet.ibm.com>
Date: Thu, 25 Jan 2018 11:15:33 +0100
Subject: net/smc: terminate link group for ib_post_send problems
Patch-mainline: v4.16-rc1
Git-commit: b4772b3a87b772401e2af1c894fef323fb5c6e7c
References: bsc#1103992 FATE#326009

If ib_post_send() fails, terminate all connections of this
link group.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/smc/smc_tx.c |    4 +++-
 net/smc/smc_wr.c |    8 +++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

--- a/net/smc/smc_tx.c
+++ b/net/smc/smc_tx.c
@@ -244,8 +244,10 @@ static int smc_tx_rdma_write(struct smc_
 		peer_rmbe_offset;
 	rdma_wr.rkey = lgr->rtokens[conn->rtoken_idx][SMC_SINGLE_LINK].rkey;
 	rc = ib_post_send(link->roce_qp, &rdma_wr.wr, &failed_wr);
-	if (rc)
+	if (rc) {
 		conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
+		smc_lgr_terminate(lgr);
+	}
 	return rc;
 }
 
--- a/net/smc/smc_wr.c
+++ b/net/smc/smc_wr.c
@@ -238,8 +238,14 @@ int smc_wr_tx_send(struct smc_link *link
 	pend = container_of(priv, struct smc_wr_tx_pend, priv);
 	rc = ib_post_send(link->roce_qp, &link->wr_tx_ibs[pend->idx],
 			  &failed_wr);
-	if (rc)
+	if (rc) {
+		struct smc_link_group *lgr =
+			container_of(link, struct smc_link_group,
+				     lnk[SMC_SINGLE_LINK]);
+
 		smc_wr_tx_put_slot(link, priv);
+		smc_lgr_terminate(lgr);
+	}
 	return rc;
 }