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5b5d66c431
Update ospfd and ospf6d to send opaque route attributes to
zebra. Those attributes are stored in the RIB and can be viewed
using the "show ip[v6] route" commands (other than that, they are
completely ignored by zebra).
Example:
```
debian# show ip route 192.168.1.0/24
Routing entry for 192.168.1.0/24
Known via "ospf", distance 110, metric 20, best
Last update 01:57:08 ago
* 10.0.1.2, via eth-rt2, weight 1
OSPF path type : External-2
OSPF tag : 0
debian#
debian# show ip route 192.168.1.0/24 json
{
"192.168.1.0\/24":[
{
"prefix":"192.168.1.0\/24",
"prefixLen":24,
"protocol":"ospf",
"vrfId":0,
"vrfName":"default",
"selected":true,
[snip]
"ospfPathType":"External-2",
"ospfTag":"0"
}
]
}
```
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/* Opaque data for Zebra from other daemons.
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*
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* Copyright (C) 2021 Donatas Abraitis <donatas.abraitis@gmail.com>
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*
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* This file is part of FRRouting (FRR).
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*
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* FRR is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2, or (at your option) any later version.
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*
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* FRR is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef FRR_ROUTE_OPAQUE_H
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#define FRR_ROUTE_OPAQUE_H
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#include "assert.h"
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#include "zclient.h"
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/* copied from bgpd/bgp_community.h */
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#define COMMUNITY_SIZE 4
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/* copied from bgpd/bgp_lcommunity.h */
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#define LCOMMUNITY_SIZE 12
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/* copied from bgpd/bgp_route.h */
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#define BGP_MAX_SELECTION_REASON_STR_BUF 32
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struct bgp_zebra_opaque {
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char aspath[256];
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/* Show at least 10 communities AA:BB */
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char community[COMMUNITY_SIZE * 20];
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/* Show at least 10 large-communities AA:BB:CC */
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char lcommunity[LCOMMUNITY_SIZE * 30];
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/* 32 bytes seems enough because of
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* bgp_path_selection_confed_as_path which is
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* `Confederation based AS Path`.
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*/
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char selection_reason[BGP_MAX_SELECTION_REASON_STR_BUF];
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};
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struct ospf_zebra_opaque {
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char path_type[32];
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char area_id[INET_ADDRSTRLEN];
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char tag[16];
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};
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static_assert(sizeof(struct bgp_zebra_opaque) <= ZAPI_MESSAGE_OPAQUE_LENGTH,
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"BGP opaque data shouldn't be larger than zebra's buffer");
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static_assert(sizeof(struct ospf_zebra_opaque) <= ZAPI_MESSAGE_OPAQUE_LENGTH,
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"OSPF opaque data shouldn't be larger than zebra's buffer");
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#endif /* FRR_ROUTE_OPAQUE_H */
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