From 711d617dc106a8af34c6c8f3500f337a792f1f3d Mon Sep 17 00:00:00 2001 From: "Ondrej Zajicek (work)" Date: Thu, 30 Mar 2017 14:00:08 +0200 Subject: BGP: Add support for SAFI 129 (VPN multicast) Which, in contrast to SAFI 128, does not use MPLS labels. --- proto/bgp/packets.c | 30 ++++++++++++++++++++++++++---- 1 file changed, 26 insertions(+), 4 deletions(-) (limited to 'proto/bgp/packets.c') diff --git a/proto/bgp/packets.c b/proto/bgp/packets.c index c6098e2b..0e974746 100644 --- a/proto/bgp/packets.c +++ b/proto/bgp/packets.c @@ -289,8 +289,8 @@ bgp_write_capabilities(struct bgp_conn *conn, byte *buf) /* Create capability list in buffer */ /* - * Note that max length is ~ 20+14*af_count. With max 10 channels that is - * 160. Option limit is 253 and buffer size is 4096, so we cannot overflow + * Note that max length is ~ 20+14*af_count. With max 12 channels that is + * 188. Option limit is 253 and buffer size is 4096, so we cannot overflow * unless we add new capabilities or more AFs. */ @@ -1386,7 +1386,8 @@ bgp_encode_nlri_vpn4(struct bgp_write_state *s, struct bgp_bucket *buck, byte *b ADVANCE(pos, size, 1); /* Encode MPLS labels */ - bgp_encode_mpls_labels(s, s->mpls_labels, &pos, &size, pos - 1); + if (s->mpls) + bgp_encode_mpls_labels(s, s->mpls_labels, &pos, &size, pos - 1); /* Encode route distinguisher */ put_u64(pos, net->rd); @@ -1430,7 +1431,8 @@ bgp_decode_nlri_vpn4(struct bgp_parse_state *s, byte *pos, uint len, rta *a) bgp_parse_error(s, 1); /* Decode MPLS labels */ - bgp_decode_mpls_labels(s, &pos, &len, &l, a); + if (s->mpls) + bgp_decode_mpls_labels(s, &pos, &len, &l, a); /* Decode route distinguisher */ if (l < 64) @@ -1824,6 +1826,26 @@ static const struct bgp_af_desc bgp_af_table[] = { .decode_next_hop = bgp_decode_next_hop_vpn, .update_next_hop = bgp_update_next_hop_ip, }, + { + .afi = BGP_AF_VPN4_MC, + .net = NET_VPN4, + .name = "vpn4-mc", + .encode_nlri = bgp_encode_nlri_vpn4, + .decode_nlri = bgp_decode_nlri_vpn4, + .encode_next_hop = bgp_encode_next_hop_vpn, + .decode_next_hop = bgp_decode_next_hop_vpn, + .update_next_hop = bgp_update_next_hop_ip, + }, + { + .afi = BGP_AF_VPN6_MC, + .net = NET_VPN6, + .name = "vpn6-mc", + .encode_nlri = bgp_encode_nlri_vpn6, + .decode_nlri = bgp_decode_nlri_vpn6, + .encode_next_hop = bgp_encode_next_hop_vpn, + .decode_next_hop = bgp_decode_next_hop_vpn, + .update_next_hop = bgp_update_next_hop_ip, + }, { .afi = BGP_AF_FLOW4, .net = NET_FLOW4, -- cgit v1.2.3