diff options
| author | Donatas Abraitis <donatas@opensourcerouting.org> | 2024-11-12 13:09:09 +0200 |
|---|---|---|
| committer | Donatas Abraitis <donatas@opensourcerouting.org> | 2025-02-13 20:44:15 +0200 |
| commit | 5eb7047e2798e56c89c650434d3c6e7dc7533328 (patch) | |
| tree | 8ca0af8b9f806de13f5022b9cc3e298c8391b549 /bgpd/bgp_bfd.c | |
| parent | 4f7e8c269dfb26ad8338aa118b6b7d504294821b (diff) | |
bgpd: Update source address for BFD session
If BFD is down, we should try to detect the source automatically from the given
interface.
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
Diffstat (limited to 'bgpd/bgp_bfd.c')
| -rw-r--r-- | bgpd/bgp_bfd.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/bgpd/bgp_bfd.c b/bgpd/bgp_bfd.c index 88ffb68206..3a1459b8a5 100644 --- a/bgpd/bgp_bfd.c +++ b/bgpd/bgp_bfd.c @@ -26,6 +26,7 @@ #include "bgpd/bgp_debug.h" #include "bgpd/bgp_vty.h" #include "bgpd/bgp_packet.h" +#include "bgpd/bgp_network.h" DEFINE_MTYPE_STATIC(BGPD, BFD_CONFIG, "BFD configuration data"); @@ -158,16 +159,33 @@ void bgp_peer_bfd_update_source(struct peer *p) struct in_addr v4; struct in6_addr v6; } src, dst; + struct interface *ifp; + union sockunion addr; /* Nothing to do for groups. */ if (CHECK_FLAG(p->sflags, PEER_STATUS_GROUP)) return; /* Figure out the correct source to use. */ - if (CHECK_FLAG(p->flags, PEER_FLAG_UPDATE_SOURCE) && p->update_source) - source = p->update_source; - else + if (CHECK_FLAG(p->flags, PEER_FLAG_UPDATE_SOURCE)) { + if (p->update_source) { + source = p->update_source; + } else if (p->update_if) { + ifp = if_lookup_by_name(p->update_if, p->bgp->vrf_id); + if (ifp) { + sockunion_init(&addr); + if (bgp_update_address(ifp, &p->connection->su, &addr)) { + if (BGP_DEBUG(bfd, BFD_LIB)) + zlog_debug("%s: can't find the source address for interface %s", + __func__, p->update_if); + } + + source = &addr; + } + } + } else { source = p->su_local; + } /* Update peer's source/destination addresses. */ bfd_sess_addresses(session, &family, &src.v6, &dst.v6); |