ldpd: LDP does not always send traffic with correct DSCP value.

Adding code so that the LDP neighbor that does not initiate the
TCP connection also sets the DSCP (via setsocketopt).

Signed-off-by: Karen Schoener <karen@voltanet.io>

diff --git a/ldpd/neighbor.c b/ldpd/neighbor.c
index ae51490c0750cde948121c3ec18e1aaf716cc34f..1aa53151e648210d92b94ebbf41d390bc5cb0dac 100644 (file)
--- a/ldpd/neighbor.c
+++ b/ldpd/neighbor.c
@@ -619,6 +619,16 @@ nbr_establish_connection(struct nbr *nbr)
 #endif
        }
 
+       if (nbr->af == AF_INET) {
+               if (sock_set_ipv4_tos(nbr->fd, IPTOS_PREC_INTERNETCONTROL) == -1)
+                       log_warn("%s: lsr-id %s, sock_set_ipv4_tos error",
+                               __func__, inet_ntoa(nbr->id));
+       } else if (nbr->af == AF_INET6) {
+               if (sock_set_ipv6_dscp(nbr->fd, IPTOS_PREC_INTERNETCONTROL) == -1)
+                       log_warn("%s: lsr-id %s, sock_set_ipv6_dscp error",
+                               __func__, inet_ntoa(nbr->id));
+       }
+
        addr2sa(nbr->af, &nbr->laddr, 0, &local_su);
        addr2sa(nbr->af, &nbr->raddr, LDP_PORT, &remote_su);
        if (nbr->af == AF_INET6 && nbr->raddr_scope)