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c43ed2e48a
This patch also adds BFD multihop support for BGP. Whether a peer is multi-hop or single hop is determined internally. All IGP peers are considered as multi-hop peers. EBGP peers are considered as single hop unless configured as multi-hop. BGP BFD command enhancement to configure BFD parameters (detect multiplier, min rx and min tx). router bgp <as-number> neighbor <name/ip-address> bfd <detect mult> <min rx> <min tx> Signed-off-by: Radhika Mahankali <radhika@cumulusnetworks.com> Reviewed-by: Dinesh G Dutt <ddutt@cumulusnetworks.com> Reviewed-by: Vipin Kumar <vipin@cumulusnetworks.com> Reviewed-by: Kanna Rajagopal <kanna@cumulusnetworks.com>
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/**
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* @copyright Copyright (C) 2015 Cumulus Networks, Inc.
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <zebra.h>
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#include "prefix.h"
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#include "vty.h"
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#include "stream.h"
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#include "zebra/zserv.h"
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/* master zebra server structure */
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extern struct zebra_t zebrad;
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int
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zsend_interface_bfd_update (int cmd, struct zserv *client,
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struct interface *ifp, struct prefix *dp,
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struct prefix *sp)
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{
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int blen;
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struct stream *s;
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/* Check this client need interface information. */
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if (! client->ifinfo)
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return 0;
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s = client->obuf;
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stream_reset (s);
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zserv_create_header (s, cmd);
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if (ifp)
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stream_putl (s, ifp->ifindex);
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else
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stream_putl (s, 0);
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/* BFD destination prefix information. */
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stream_putc (s, dp->family);
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blen = prefix_blen (dp);
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stream_put (s, &dp->u.prefix, blen);
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stream_putc (s, dp->prefixlen);
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/* BFD source prefix information. */
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stream_putc (s, sp->family);
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blen = prefix_blen (sp);
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stream_put (s, &sp->u.prefix, blen);
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stream_putc (s, sp->prefixlen);
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/* Write packet size. */
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stream_putw_at (s, 0, stream_get_endp (s));
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client->if_bfd_cnt++;
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return zebra_server_send_message(client);
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}
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void
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zebra_interface_bfd_update (struct interface *ifp, struct prefix *dp,
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struct prefix *sp)
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{
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struct listnode *node, *nnode;
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struct zserv *client;
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for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))
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{
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/* Supporting for OSPF and BGP */
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if (client->proto != ZEBRA_ROUTE_OSPF && client->proto != ZEBRA_ROUTE_BGP)
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continue;
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/* Notify to the protocol daemons. */
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zsend_interface_bfd_update (ZEBRA_INTERFACE_BFD_DEST_DOWN, client, ifp,
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dp, sp);
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}
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}
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int
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zsend_bfd_peer_replay (int cmd, struct zserv *client)
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{
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struct stream *s;
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s = client->obuf;
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stream_reset (s);
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zserv_create_header (s, cmd);
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/* Write packet size. */
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stream_putw_at (s, 0, stream_get_endp (s));
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client->bfd_peer_replay_cnt++;
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return zebra_server_send_message(client);
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}
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void
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zebra_bfd_peer_replay_req (void)
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{
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struct listnode *node, *nnode;
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struct zserv *client;
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for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))
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{
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/* Supporting for BGP */
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if (client->proto != ZEBRA_ROUTE_BGP)
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continue;
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/* Notify to the protocol daemons. */
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zsend_bfd_peer_replay (ZEBRA_BFD_DEST_REPLAY, client);
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}
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}
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