msg/async: only check errno if setsockopt() fails

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/src/msg/async/net_handler.cc b/src/msg/async/net_handler.cc
index 53ffdb7da9326654fda45c04f492983cf65abc49..059f9220948aa46b99d98108fd511b81ef0af7a2 100644 (file)
--- 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;