diff options
| author | Timo Teräs <timo.teras@iki.fi> | 2015-11-02 16:50:07 +0200 |
|---|---|---|
| committer | Donald Sharp <sharpd@cumulusnetworks.com> | 2016-08-21 13:11:42 -0400 |
| commit | c50ca33acf29bb269e8f26be19a8ccd06ab41d3e (patch) | |
| tree | 82c05cf8767f6b9096a58d57f5fed9bf8c82e8ef /zebra/zebra_rib.c | |
| parent | 2b50b6031ceb1c960337dd263c91095c4fd27696 (diff) | |
zebra: implement per-route mtu handling
This commits allow overriding MTU using netlink attributes on
per-route basis. This is useful for routing protocols that can
advertice prefix specific MTUs between routers (e.g. NHRP).
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
(cherry picked from commit b11f3b54c842117e22e2f5cf1561ea34eee8dfcc)
Diffstat (limited to 'zebra/zebra_rib.c')
| -rw-r--r-- | zebra/zebra_rib.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c index 0dc8086906..195d3633e1 100644 --- a/zebra/zebra_rib.c +++ b/zebra/zebra_rib.c @@ -352,6 +352,7 @@ nexthop_active_ipv4 (struct rib *rib, struct nexthop *nexthop, int set, zebra_deregister_rnh_static_nexthops(rib->vrf_id, nexthop->resolved, top); nexthops_free(nexthop->resolved); nexthop->resolved = NULL; + rib->nexthop_mtu = 0; } /* Skip nexthops that have been filtered out due to route-map */ @@ -545,6 +546,8 @@ nexthop_active_ipv4 (struct rib *rib, struct nexthop *nexthop, int set, } resolved = 1; } + if (resolved && set) + rib->nexthop_mtu = match->mtu; return resolved; } else @@ -2414,7 +2417,7 @@ int rib_add_ipv4 (int type, u_short instance, int flags, struct prefix_ipv4 *p, struct in_addr *gate, struct in_addr *src, ifindex_t ifindex, vrf_id_t vrf_id, u_int32_t table_id, - u_int32_t metric, u_char distance, safi_t safi) + u_int32_t metric, u_int32_t mtu, u_char distance, safi_t safi) { struct rib *rib; struct rib *same = NULL; @@ -2481,6 +2484,7 @@ rib_add_ipv4 (int type, u_short instance, int flags, struct prefix_ipv4 *p, rib->distance = distance; rib->flags = flags; rib->metric = metric; + rib->mtu = mtu; rib->table = table_id; rib->vrf_id = vrf_id; rib->nexthop_num = 0; @@ -2554,9 +2558,10 @@ void _rib_dump (const char * func, ); zlog_debug ( - "%s: metric == %u, distance == %u, flags == %u, status == %u", + "%s: metric == %u, mtu == %u, distance == %u, flags == %u, status == %u", func, rib->metric, + rib->mtu, rib->distance, rib->flags, rib->status @@ -2992,6 +2997,7 @@ static_install_route (afi_t afi, safi_t safi, struct prefix *p, struct static_ro rib->instance = 0; rib->distance = si->distance; rib->metric = 0; + rib->mtu = 0; rib->vrf_id = si->vrf_id; rib->table = si->vrf_id ? (zebra_vrf_lookup(si->vrf_id))->table_id : zebrad.rtm_table_default; rib->nexthop_num = 0; @@ -3342,7 +3348,8 @@ static_delete_ipv4 (safi_t safi, struct prefix *p, struct in_addr *gate, ifindex int rib_add_ipv6 (int type, u_short instance, int flags, struct prefix_ipv6 *p, struct in6_addr *gate, ifindex_t ifindex, vrf_id_t vrf_id, - u_int32_t table_id, u_int32_t metric, u_char distance, safi_t safi) + u_int32_t table_id, u_int32_t metric, u_int32_t mtu, + u_char distance, safi_t safi) { struct rib *rib; struct rib *same = NULL; @@ -3401,6 +3408,7 @@ rib_add_ipv6 (int type, u_short instance, int flags, struct prefix_ipv6 *p, rib->distance = distance; rib->flags = flags; rib->metric = metric; + rib->mtu = mtu; rib->table = table_id; rib->vrf_id = vrf_id; rib->nexthop_num = 0; |