diff options
| author | Vasilis Tsiligiannis <b_tsiligiannis@silverton.gr> | 2009-07-20 01:28:35 +0300 |
|---|---|---|
| committer | Paul Jakma <paul@quagga.net> | 2009-07-28 14:49:33 +0100 |
| commit | ca87e1d37b3c30648e9bacb476a3c89729512f6d (patch) | |
| tree | d0911b72e7d4c3c94c88a65233ee8a7fa8a4c950 /bgpd/bgp_attr.c | |
| parent | 30d205909c5a81cc306b161c16abff0fd7f566a7 (diff) | |
bgpd: Implement BGP confederation error handling (RFC5065, Par. 5)
This patch implements BGP confederation error handling in Quagga as described
in RFC5065, paragraph 5.
* bgp_aspath.c: (aspath_confed_check, aspath_left_confed_check) new functions
* bgp_attr.c: (bgp_attr_aspath_check) apply previous and NOTIFY if there's
a problem.
Diffstat (limited to 'bgpd/bgp_attr.c')
| -rw-r--r-- | bgpd/bgp_attr.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c index 94168372..a664858c 100644 --- a/bgpd/bgp_attr.c +++ b/bgpd/bgp_attr.c @@ -872,6 +872,17 @@ static int bgp_attr_aspath_check( struct peer *peer, bgp = peer->bgp; + /* Confederation sanity check. */ + if ((peer_sort (peer) == BGP_PEER_CONFED && ! aspath_left_confed_check (attr->aspath)) || + (peer_sort (peer) == BGP_PEER_EBGP && aspath_confed_check (attr->aspath))) + { + zlog (peer->log, LOG_ERR, "Malformed AS path from %s", peer->host); + bgp_notify_send (peer, + BGP_NOTIFY_UPDATE_ERR, + BGP_NOTIFY_UPDATE_MAL_AS_PATH); + return -1; + } + /* First AS check for EBGP. */ if (bgp != NULL && bgp_flag_check (bgp, BGP_FLAG_ENFORCE_FIRST_AS)) { |