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| author | Donald Sharp <sharpd@cumulusnetworks.com> | 2015-06-12 16:59:11 +0200 |
|---|---|---|
| committer | Donald Sharp <sharpd@cumulusnetworks.com> | 2015-06-12 16:59:11 +0200 |
| commit | ed40466af80c9d0b88436c637a1d54b28a669b1c (patch) | |
| tree | b092d22e9591da81776a56006dc2883f445b0ddd /bgpd | |
| parent | This patch changes BGP from only listening mode for BFD status updates to int... (diff) | |
| download | frr-ed40466af80c9d0b88436c637a1d54b28a669b1c.tar.xz frr-ed40466af80c9d0b88436c637a1d54b28a669b1c.zip | |
bgpd-set-somark.patch
BGP: Set SO_MARK on connecting sockets to ensure lookup in right routing table
In the presence of a function such as management VRF/MRF, bgpd needs to be able
to specify that it intends to run in the dataplane and not the front panel.
To ensure this, we add a mark in the connecting socket so that the kernel
does the routing lookup in the right table. This assumes that an appropriate
ip rule has been configured (outside the scope of this package).
While we've forced the mark to be 254 for now, it maybe required to make it
configurable at a later time.
Diffstat (limited to 'bgpd')
| -rw-r--r-- | bgpd/bgp_network.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/bgpd/bgp_network.c b/bgpd/bgp_network.c index 68934655f..c65119489 100644 --- a/bgpd/bgp_network.c +++ b/bgpd/bgp_network.c @@ -440,6 +440,8 @@ bgp_update_source (struct peer *peer) sockunion_bind (peer->fd, peer->update_source, 0, peer->update_source); } +#define DATAPLANE_MARK 254 /* main table ID */ + /* BGP try to connect to the peer. */ int bgp_connect (struct peer *peer) @@ -466,6 +468,9 @@ bgp_connect (struct peer *peer) sockopt_reuseaddr (peer->fd); sockopt_reuseport (peer->fd); + if (sockopt_mark_default(peer->fd, DATAPLANE_MARK, &bgpd_privs) < 0) + zlog_warn("Unable to set mark on FD for peer %s, err=%s", peer->host, + safe_strerror(errno)); #ifdef IPTOS_PREC_INTERNETCONTROL if (bgpd_privs.change (ZPRIVS_RAISE)) |