From: Liang Zhen <liang.zhen@intel.com>
Date: Thu, 15 Jan 2015 17:34:24 +0000 (-0800)
Subject: LU-6060 lnet: set downis to 1 if there's no NI for remote net
X-Git-Tag: 2.6.93~36
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=749dc54622b2c3267c6c97eb770702b437a7897d;ds=sidebyside

LU-6060 lnet: set downis to 1 if there's no NI for remote net

lnet_route_t::lr_downis is marked as zero even if there is no NI to
target network, this is wrong and breaks logic of ARF. This patch
fixes this problem.

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Change-Id: I7831e258d0098e2a4bee650e69bb4f1a12429f46
Reviewed-on: http://review.whamcloud.com/13417
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---

diff --git a/lnet/lnet/router.c b/lnet/lnet/router.c
index edfa384..ddd83aa 100644
--- a/lnet/lnet/router.c
+++ b/lnet/lnet/router.c
@@ -735,6 +735,11 @@ lnet_parse_rc_info(lnet_rc_data_t *rcd)
 			rte->lr_downis = 0;
 			continue;
 		}
+		/* if @down is zero and this route is single-hop, it means
+		 * we can't find NI for target network */
+		if (down == 0 && rte->lr_hops == 1)
+			down = 1;
+
 		rte->lr_downis = down;
 	}
 }