From: Serguei Smirnov <ssmirnov@whamcloud.com>
Date: Mon, 12 Sep 2022 20:50:07 +0000 (-0700)
Subject: LU-16106 lnet: allow direct messages regardless of peer NI status
X-Git-Tag: 2.15.2-RC1~29
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F29%2F48529%2F3;p=fs%2Flustre-release.git

LU-16106 lnet: allow direct messages regardless of peer NI status

If check_routers_before_use is enabled, the router needs to
be pinged before it is used, which is not possible because
its NIs are assumed to be down at start-up. Don't prevent
discovery of the router in this case.

This change allows non-routed traffic to peer NIs with "down"
status.

Lustre-commit: 4c6d1491d1df078a4477b3fcfeddadf3d1fd7239
Lustre-change: https://review.whamcloud.com/c/48355

Test-Parameters: trivial
Signed-off-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Change-Id: I36fa60e37ef4f47c82c69855c9b0b80bad8a36f4
Signed-off-by: Gian-Carlo DeFazio <defazio1@llnl.gov>
Reviewed-on: https://review.whamcloud.com/48529
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lnet/lnet/lib-move.c b/lnet/lnet/lib-move.c
index 9aae6ac..5c50c9e 100644
--- a/lnet/lnet/lib-move.c
+++ b/lnet/lnet/lib-move.c
@@ -813,6 +813,10 @@ lnet_peer_alive_locked(struct lnet_ni *ni, struct lnet_peer_ni *lpni,
 	if (lnet_msg_is_response(msg))
 		return 1;
 
+	/* always send non-routed messages */
+	if (!msg->msg_routing)
+		return 1;
+
 	if (!lnet_is_peer_deadline_passed(lpni, now))
 		return true;