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BGP: Partial support for IPv4 routes with IPv6 next hop (RFC 5549)

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Mostly capability signalling
This commit is contained in:
Ondrej Zajicek (work)
2017-01-24 02:00:35 +01:00
parent 5509e17d0c
commit d8022d26fc
5 changed files with 60 additions and 0 deletions
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15
proto/bgp/bgp.c
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@@ -521,6 +521,7 @@ bgp_conn_enter_established_state(struct bgp_conn *conn)
if (peer->gr_aware)
c->load_state = BFS_LOADING;
c->ext_next_hop = c->cf->ext_next_hop && (bgp_channel_is_ipv6(c) || rem->ext_next_hop);
c->add_path_rx = (loc->add_path & BGP_ADD_PATH_RX) && (rem->add_path & BGP_ADD_PATH_TX);
c->add_path_tx = (loc->add_path & BGP_ADD_PATH_TX) && (rem->add_path & BGP_ADD_PATH_RX);
@@ -1788,6 +1789,7 @@ bgp_show_capabilities(struct bgp_proto *p UNUSED, struct bgp_caps *caps)
uint any_mp_bgp = 0;
uint any_gr_able = 0;
uint any_add_path = 0;
uint any_ext_next_hop = 0;
u32 *afl1 = alloca(caps->af_count * sizeof(u32));
u32 *afl2 = alloca(caps->af_count * sizeof(u32));
uint afn1, afn2;
@@ -1797,6 +1799,7 @@ bgp_show_capabilities(struct bgp_proto *p UNUSED, struct bgp_caps *caps)
any_mp_bgp |= ac->ready;
any_gr_able |= ac->gr_able;
any_add_path |= ac->add_path;
any_ext_next_hop |= ac->ext_next_hop;
}
if (any_mp_bgp)
@@ -1814,6 +1817,18 @@ bgp_show_capabilities(struct bgp_proto *p UNUSED, struct bgp_caps *caps)
if (caps->route_refresh)
cli_msg(-1006, " Route refresh");
if (any_ext_next_hop)
{
cli_msg(-1006, " Extended next hop");
afn1 = 0;
WALK_AF_CAPS(caps, ac)
if (ac->ext_next_hop)
afl1[afn1++] = ac->afi;
bgp_show_afis(-1006, " IPv6 nexthop:", afl1, afn1);
}
if (caps->ext_messages)
cli_msg(-1006, " Extended message");