From 4ca5bbddd3939fc95db14a51c6bb8028f7d00002 Mon Sep 17 00:00:00 2001
From: Kefu Chai <kchai@redhat.com>
Date: Fri, 14 Apr 2017 12:52:30 +0800
Subject: [PATCH] msg/async: only check errno if setsockopt() fails

Signed-off-by: Kefu Chai <kchai@redhat.com>
---
 src/msg/async/net_handler.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/msg/async/net_handler.cc b/src/msg/async/net_handler.cc
index 53ffdb7da93..059f9220948 100644
--- a/src/msg/async/net_handler.cc
+++ b/src/msg/async/net_handler.cc
@@ -139,7 +139,8 @@ void NetHandler::set_priority(int sd, int prio, int domain)
       }
     } else if (domain == AF_INET6) {
       r = ::setsockopt(sd, IPPROTO_IPV6, IPV6_TCLASS, &iptos, sizeof(iptos));
-      r = -errno;
+      if (r)
+	r = -errno;
       if (r < 0) {
         ldout(cct,0) << "couldn't set IPV6_TCLASS to " << iptos
                            << ": " << cpp_strerror(r) << dendl;
-- 
2.47.3