diff options
Diffstat (limited to 'bgpd/bgp_network.c')
| -rw-r--r-- | bgpd/bgp_network.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/bgpd/bgp_network.c b/bgpd/bgp_network.c index 4c79aa63..502f5679 100644 --- a/bgpd/bgp_network.c +++ b/bgpd/bgp_network.c @@ -173,8 +173,11 @@ bgp_accept (struct thread *thread) } /* In case of peer is EBGP, we should set TTL for this connection. */ - if (peer_sort (peer1) == BGP_PEER_EBGP) + if (peer_sort (peer1) == BGP_PEER_EBGP) { sockopt_ttl (peer1->su.sa.sa_family, bgp_sock, peer1->ttl); + if (peer1->gtsm_hops) + sockopt_minttl (peer1->su.sa.sa_family, bgp_sock, MAXTTL + 1 - peer1->gtsm_hops); + } /* Make dummy peer until read Open packet. */ if (BGP_DEBUG (events, EVENTS)) @@ -314,8 +317,11 @@ bgp_connect (struct peer *peer) return -1; /* If we can get socket for the peer, adjest TTL and make connection. */ - if (peer_sort (peer) == BGP_PEER_EBGP) + if (peer_sort (peer) == BGP_PEER_EBGP) { sockopt_ttl (peer->su.sa.sa_family, peer->fd, peer->ttl); + if (peer->gtsm_hops) + sockopt_minttl (peer->su.sa.sa_family, peer->fd, MAXTTL + 1 - peer->gtsm_hops); + } sockopt_reuseaddr (peer->fd); sockopt_reuseport (peer->fd); @@ -462,7 +468,10 @@ bgp_socket (unsigned short port, const char *address) zlog_err ("socket: %s", safe_strerror (errno)); continue; } - + + /* if we intend to implement ttl-security, this socket needs ttl=255 */ + sockopt_ttl (ainfo->ai_family, sock, MAXTTL); + ret = bgp_listener (sock, ainfo->ai_addr, ainfo->ai_addrlen); if (ret == 0) ++count; @@ -495,6 +504,9 @@ bgp_socket (unsigned short port, const char *address) return sock; } + /* if we intend to implement ttl-security, this socket needs ttl=255 */ + sockopt_ttl (AF_INET, sock, MAXTTL); + memset (&sin, 0, sizeof (struct sockaddr_in)); sin.sin_family = AF_INET; sin.sin_port = htons (port); |