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Revert "bgpd: store bgp link-state prefixes"

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This reverts commit 39a8d354c1.
This commit is contained in:
Donald Sharp 2023-10-10 16:45:00 -04:00
parent f75d9050fc
commit 59c3a49166
8 changed files with 2 additions and 114 deletions
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6
bgpd/bgp_errors.c
View file

@ -449,12 +449,6 @@ static struct log_ref ferr_bgp_err[] = {
.description = "The BGP flowspec subsystem has detected that there was a failure for installation/removal/modification of Flowspec from the dataplane",
.suggestion = "Gather log files from the router and open an issue, Restart FRR"
},
{
.code = EC_BGP_LINKSTATE_PACKET,
.title = "BGP Link-State packet processing error",
.description = "The BGP Link-State subsystem has detected a error in the send or receive of a packet",
.suggestion = "Gather log files from both sides of the peering relationship and open an issue"
},
{
.code = EC_BGP_DOPPELGANGER_CONFIG,
.title = "BGP has detected a configuration overwrite during peer collision resolution",

1
bgpd/bgp_errors.h
View file

@ -59,7 +59,6 @@ enum bgp_log_refs {
EC_BGP_EVPN_INSTANCE_MISMATCH,
EC_BGP_FLOWSPEC_PACKET,
EC_BGP_FLOWSPEC_INSTALLATION,
EC_BGP_LINKSTATE_PACKET,
EC_BGP_ASPATH_FEWER_HOPS,
EC_BGP_DEFUNCT_SNPA_LEN,
EC_BGP_MISSING_ATTRIBUTE,

73
bgpd/bgp_linkstate_tlv.c
View file

@ -1,73 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/* BGP Link-State TLV Serializer/Deserializer
* Copyright 2023 6WIND S.A.
*/
#include <zebra.h>
#include "bgpd/bgpd.h"
#include "bgpd/bgp_route.h"
#include "bgpd/bgp_debug.h"
#include "bgpd/bgp_errors.h"
#include "bgpd/bgp_linkstate_tlv.h"
static uint16_t pnt_decode16(uint8_t **pnt)
{
uint16_t data;
*pnt = ptr_get_be16(*pnt, &data);
return data;
}
int bgp_nlri_parse_linkstate(struct peer *peer, struct attr *attr,
struct bgp_nlri *packet, int withdraw)
{
uint8_t *pnt;
uint8_t *lim;
afi_t afi;
safi_t safi;
uint16_t length = 0;
struct prefix p;
/* Start processing the NLRI - there may be multiple in the MP_REACH */
pnt = packet->nlri;
lim = pnt + packet->length;
afi = packet->afi;
safi = packet->safi;
for (; pnt < lim; pnt += length) {
/* Clear prefix structure. */
memset(&p, 0, sizeof(p));
/* All linkstate NLRI begin with NRLI type and length. */
if (pnt + 4 > lim)
return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW;
p.u.prefix_linkstate.nlri_type = pnt_decode16(&pnt);
length = pnt_decode16(&pnt);
/* When packet overflow occur return immediately. */
if (pnt + length > lim) {
flog_err(
EC_BGP_LINKSTATE_PACKET,
"Link-State NLRI length inconsistent (size %u seen)",
length);
return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW;
}
p.family = AF_LINKSTATE;
p.u.prefix_linkstate.ptr = (uintptr_t)pnt;
p.prefixlen = length;
/* Process the route. */
if (withdraw)
bgp_withdraw(peer, &p, 0, afi, safi, ZEBRA_ROUTE_BGP,
BGP_ROUTE_NORMAL, NULL, NULL, 0, NULL);
else
bgp_update(peer, &p, 0, attr, afi, safi,
ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, NULL,
NULL, 0, 0, NULL);
}
return BGP_NLRI_PARSE_OK;
}

12
bgpd/bgp_linkstate_tlv.h
View file

@ -1,12 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/* BGP Link-State TLV Serializer/Deserializer header
* Copyright 2023 6WIND S.A.
*/
#ifndef BGP_LINKSTATE_TLV_H
#define BGP_LINKSTATE_TLV_H
extern int bgp_nlri_parse_linkstate(struct peer *peer, struct attr *attr,
struct bgp_nlri *packet, int withdraw);
#endif /* BGP_LINKSTATE_TLV_H */

5
bgpd/bgp_packet.c
View file

@ -48,7 +48,6 @@
#include "bgpd/bgp_io.h"
#include "bgpd/bgp_keepalives.h"
#include "bgpd/bgp_flowspec.h"
#include "bgpd/bgp_linkstate_tlv.h"
#include "bgpd/bgp_trace.h"
DEFINE_HOOK(bgp_packet_dump,
@ -350,11 +349,7 @@ int bgp_nlri_parse(struct peer *peer, struct attr *attr,
return bgp_nlri_parse_evpn(peer, attr, packet, mp_withdraw);
case SAFI_FLOWSPEC:
return bgp_nlri_parse_flowspec(peer, attr, packet, mp_withdraw);
case SAFI_LINKSTATE:
return bgp_nlri_parse_linkstate(peer, attr, packet,
mp_withdraw);
}
return BGP_NLRI_PARSE_ERROR;
}

3
bgpd/bgp_table.c
View file

@ -117,9 +117,6 @@ static void bgp_node_destroy(route_table_delegate_t *delegate,
node->info = NULL;
}
if (family2afi(node->p.family) == AFI_LINKSTATE)
prefix_linkstate_ptr_free(&node->p);
XFREE(MTYPE_ROUTE_NODE, node);
}

2
bgpd/subdir.am
View file

@ -51,7 +51,6 @@ bgpd_libbgp_a_SOURCES = \
bgpd/bgp_label.c \
bgpd/bgp_labelpool.c \
bgpd/bgp_lcommunity.c \
bgpd/bgp_linkstate_tlv.c \
bgpd/bgp_mac.c \
bgpd/bgp_memory.c \
bgpd/bgp_mpath.c \
@ -134,7 +133,6 @@ noinst_HEADERS += \
bgpd/bgp_label.h \
bgpd/bgp_labelpool.h \
bgpd/bgp_lcommunity.h \
bgpd/bgp_linkstate_tlv.h \
bgpd/bgp_mac.h \
bgpd/bgp_memory.h \
bgpd/bgp_mpath.h \

14
lib/table.c
View file

@ -281,22 +281,15 @@ struct route_node *route_node_get(struct route_table *table,
const uint8_t *prefix = &p->u.prefix;
node = rn_hash_node_find(&table->hash, &search);
if (node && node->info) {
if (family2afi(p->family) == AFI_LINKSTATE)
prefix_linkstate_ptr_free(p);
if (node && node->info)
return route_lock_node(node);
}
match = NULL;
node = table->top;
while (node && node->p.prefixlen <= prefixlen
&& prefix_match(&node->p, p)) {
if (node->p.prefixlen == prefixlen) {
if (family2afi(p->family) == AFI_LINKSTATE)
prefix_linkstate_ptr_free(p);
if (node->p.prefixlen == prefixlen)
return route_lock_node(node);
}
match = node;
node = node->link[prefix_bit(prefix, node->p.prefixlen)];
@ -331,9 +324,6 @@ struct route_node *route_node_get(struct route_table *table,
table->count++;
route_lock_node(new);
if (family2afi(p->family) == AFI_LINKSTATE)
prefix_linkstate_ptr_free(p);
return new;
}