forked from Mirror/frr
7e24fdf333
This is the start of separating out the static handling code from zebra -> staticd. This will help simplify the zebra code and isolate static route handling to it's own code base. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
76 lines
2 KiB
C
76 lines
2 KiB
C
/*
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* Static NHT code.
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* Copyright (C) 2018 Cumulus Networks, Inc.
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* Donald Sharp
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*
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* FRR 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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* FRR 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 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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#include <zebra.h>
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#include "prefix.h"
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#include "table.h"
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#include "vrf.h"
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#include "nexthop.h"
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#include "static_vrf.h"
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#include "static_routes.h"
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#include "static_zebra.h"
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#include "static_nht.h"
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void static_nht_update(struct prefix *p, uint32_t nh_num,
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afi_t afi, vrf_id_t vrf_id)
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{
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struct route_table *stable;
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struct static_route *si;
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struct static_vrf *svrf;
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struct route_node *rn;
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struct vrf *vrf;
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bool orig;
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bool reinstall;
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vrf = vrf_lookup_by_id(vrf_id);
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if (!vrf->info)
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return;
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svrf = vrf->info;
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stable = static_vrf_static_table(afi, SAFI_UNICAST, svrf);
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if (!stable)
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return;
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for (rn = route_top(stable); rn; rn = route_next(rn)) {
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reinstall = false;
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for (si = rn->info; si; si = si->next) {
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if (si->type != STATIC_IPV4_GATEWAY &&
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si->type != STATIC_IPV6_GATEWAY)
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continue;
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orig = si->nh_valid;
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if (p->family == AF_INET &&
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p->u.prefix4.s_addr == si->addr.ipv4.s_addr)
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si->nh_valid = !!nh_num;
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if (p->family == AF_INET6 &&
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memcmp(&p->u.prefix6, &si->addr.ipv6, 16) == 0)
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si->nh_valid = !!nh_num;
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if (orig != si->nh_valid)
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reinstall = true;
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}
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if (reinstall)
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static_zebra_route_add(rn, vrf_id, SAFI_UNICAST, true);
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}
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}
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