From: Frank Sehr <fsehr@whamcloud.com>
Date: Thu, 9 Mar 2023 01:36:37 +0000 (-0800)
Subject: LU-16260 lnet: enforce a positive minimum for lnd_timeout
X-Git-Tag: 2.15.55~12
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=3b4bd39beb95c8988dd95b26e22b2cfae6f99f7e;p=fs%2Flustre-release.git

LU-16260 lnet: enforce a positive minimum for lnd_timeout

Set the lnet_lnd_timeout to at least 1 second. The lnd_timeout is
calculated using the following formula:
max((lnet_transaction_timeout - 1) / (lnet_retry_count + 1), 1U);

Signed-off-by: Frank Sehr <fsehr@whamcloud.com>
Change-Id: I64fd133974bd1f60ff3d7354bf9e0990c56d4c04
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50236
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Cyril Bordage <cbordage@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lnet/lnet/api-ni.c b/lnet/lnet/api-ni.c
index 3c63f94..4134add 100644
--- a/lnet/lnet/api-ni.c
+++ b/lnet/lnet/api-ni.c
@@ -278,8 +278,8 @@ MODULE_PARM_DESC(lock_prim_nid,
 unsigned int lnet_lnd_timeout = LNET_LND_TIMEOUT_DEFAULT;
 static void lnet_set_lnd_timeout(void)
 {
-	lnet_lnd_timeout = (lnet_transaction_timeout - 1) /
-			   (lnet_retry_count + 1);
+	lnet_lnd_timeout = max((lnet_transaction_timeout - 1) /
+			       (lnet_retry_count + 1), 1U);
 }
 
 /*