[lustre-devel] [PATCH 12/39] lnet: lnd: Use NETWORK_TIMEOUT for some conn failures

[James Simmons <jsimmons@infradead.org>]

From: Chris Horn <chris.horn@hpe.com>

For -EHOSTUNREACH and -ETIMEDOUT we cannot tell whether the
connection failure was due to a problem with the remote or local NI,
so we should return the LNET_MSG_STATUS_NETWORK_TIMEOUT to LNet in
these cases.

HPE-bug-id: LUS-9342
WC-bug-id: https://jira.whamcloud.com/browse/LU-13571
Lustre-commit: 12333c1fecc00e ("LU-13571 lnd: Use NETWORK_TIMEOUT for some conn failures")
Signed-off-by: Chris Horn <chris.horn@hpe.com>
Reviewed-on: https://review.whamcloud.com/39900
Reviewed-by: Amir Shehata <ashehata@whamcloud.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
 net/lnet/klnds/o2iblnd/o2iblnd_cb.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/net/lnet/klnds/o2iblnd/o2iblnd_cb.c b/net/lnet/klnds/o2iblnd/o2iblnd_cb.c
index 9766aa2..20d555f 100644
--- a/net/lnet/klnds/o2iblnd/o2iblnd_cb.c
+++ b/net/lnet/klnds/o2iblnd/o2iblnd_cb.c
@@ -2143,8 +2143,12 @@ static int kiblnd_map_tx(struct lnet_ni *ni, struct kib_tx *tx,
 	CNETERR("Deleting messages for %s: connection failed\n",
 		libcfs_nid2str(peer_ni->ibp_nid));
 
-	kiblnd_txlist_done(&zombies, error,
-			   LNET_MSG_STATUS_LOCAL_DROPPED);
+	if (error == -EHOSTUNREACH || error == -ETIMEDOUT)
+		kiblnd_txlist_done(&zombies, error,
+				   LNET_MSG_STATUS_NETWORK_TIMEOUT);
+	else
+		kiblnd_txlist_done(&zombies, error,
+				   LNET_MSG_STATUS_LOCAL_DROPPED);
 }
 
 static void
-- 
1.8.3.1

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