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-rw-r--r--bgpd/bgp_nexthop.c168
1 files changed, 118 insertions, 50 deletions
diff --git a/bgpd/bgp_nexthop.c b/bgpd/bgp_nexthop.c
index bfce61c2af..ff238d71b1 100644
--- a/bgpd/bgp_nexthop.c
+++ b/bgpd/bgp_nexthop.c
@@ -44,6 +44,7 @@
#include "bgpd/bgp_damp.h"
#include "bgpd/bgp_fsm.h"
#include "bgpd/bgp_vty.h"
+#include "bgpd/bgp_rd.h"
DEFINE_MTYPE_STATIC(BGPD, MARTIAN_STRING, "BGP Martian Address Intf String");
@@ -695,13 +696,44 @@ bool bgp_subgrp_multiaccess_check_v4(struct in_addr nexthop,
return false;
}
+static void bgp_show_nexthop_paths(struct vty *vty, struct bgp *bgp,
+ struct bgp_nexthop_cache *bnc)
+{
+ struct bgp_node *rn;
+ struct bgp_path_info *path;
+ int afi;
+ safi_t safi;
+ struct bgp_table *table;
+ struct bgp *bgp_path;
+ char buf1[BUFSIZ];
+
+ vty_out(vty, " Paths:\n");
+ LIST_FOREACH (path, &(bnc->paths), nh_thread) {
+ rn = path->net;
+ assert(rn && bgp_node_table(rn));
+ afi = family2afi(rn->p.family);
+ table = bgp_node_table(rn);
+ safi = table->safi;
+ bgp_path = table->bgp;
+
+ if (rn->prn) {
+ prefix_rd2str((struct prefix_rd *)&rn->prn->p,
+ buf1, sizeof(buf1));
+ vty_out(vty, " %d/%d %pRN RD %s %s flags 0x%x\n",
+ afi, safi, rn, buf1, bgp_path->name_pretty, path->flags);
+ } else
+ vty_out(vty, " %d/%d %pRN %s flags 0x%x\n",
+ afi, safi, rn, bgp_path->name_pretty, path->flags);
+ }
+}
+
static void bgp_show_nexthops_detail(struct vty *vty, struct bgp *bgp,
struct bgp_nexthop_cache *bnc)
{
char buf[PREFIX2STR_BUFFER];
struct nexthop *nexthop;
- for (nexthop = bnc->nexthop; nexthop; nexthop = nexthop->next)
+ for (nexthop = bnc->nexthop; nexthop; nexthop = nexthop->next) {
switch (nexthop->type) {
case NEXTHOP_TYPE_IPV6:
vty_out(vty, " gate %s\n",
@@ -736,15 +768,55 @@ static void bgp_show_nexthops_detail(struct vty *vty, struct bgp *bgp,
vty_out(vty, " invalid nexthop type %u\n",
nexthop->type);
}
+ }
}
-static void bgp_show_nexthops(struct vty *vty, struct bgp *bgp, int detail,
- bool import_table)
+static void bgp_show_nexthop(struct vty *vty, struct bgp *bgp,
+ struct bgp_node *rn,
+ struct bgp_nexthop_cache *bnc,
+ bool specific)
{
- struct bgp_node *rn;
- struct bgp_nexthop_cache *bnc;
char buf[PREFIX2STR_BUFFER];
time_t tbuf;
+ struct peer *peer;
+ const struct prefix *p = bgp_node_get_prefix(rn);
+
+ peer = (struct peer *)bnc->nht_info;
+
+ if (CHECK_FLAG(bnc->flags, BGP_NEXTHOP_VALID)) {
+ vty_out(vty, " %s valid [IGP metric %d], #paths %d",
+ inet_ntop(p->family, &p->u.prefix, buf, sizeof(buf)),
+ bnc->metric, bnc->path_count);
+ if (peer)
+ vty_out(vty, ", peer %s", peer->host);
+ vty_out(vty, "\n");
+ bgp_show_nexthops_detail(vty, bgp, bnc);
+ } else {
+ vty_out(vty, " %s invalid, #paths %d",
+ inet_ntop(p->family, &p->u.prefix, buf, sizeof(buf)),
+ bnc->path_count);
+ if (peer)
+ vty_out(vty, ", peer %s", peer->host);
+ vty_out(vty, "\n");
+ if (CHECK_FLAG(bnc->flags, BGP_NEXTHOP_CONNECTED))
+ vty_out(vty, " Must be Connected\n");
+ if (!CHECK_FLAG(bnc->flags, BGP_NEXTHOP_REGISTERED))
+ vty_out(vty, " Is not Registered\n");
+ }
+ tbuf = time(NULL) - (bgp_clock() - bnc->last_update);
+ vty_out(vty, " Last update: %s", ctime(&tbuf));
+ vty_out(vty, "\n");
+
+ /* show paths dependent on nexthop, if needed. */
+ if (specific)
+ bgp_show_nexthop_paths(vty, bgp, bnc);
+}
+
+static void bgp_show_nexthops(struct vty *vty, struct bgp *bgp,
+ bool import_table)
+{
+ struct bgp_node *rn;
+ struct bgp_nexthop_cache *bnc;
afi_t afi;
struct bgp_table **table;
@@ -761,52 +833,17 @@ static void bgp_show_nexthops(struct vty *vty, struct bgp *bgp, int detail,
continue;
for (rn = bgp_table_top(table[afi]); rn;
rn = bgp_route_next(rn)) {
- struct peer *peer;
- const struct prefix *p = bgp_node_get_prefix(rn);
-
bnc = bgp_node_get_bgp_nexthop_info(rn);
if (!bnc)
continue;
- peer = (struct peer *)bnc->nht_info;
-
- if (CHECK_FLAG(bnc->flags, BGP_NEXTHOP_VALID)) {
- vty_out(vty,
- " %s valid [IGP metric %d], #paths %d",
- inet_ntop(p->family, &p->u.prefix, buf,
- sizeof(buf)),
- bnc->metric, bnc->path_count);
- if (peer)
- vty_out(vty, ", peer %s", peer->host);
- vty_out(vty, "\n");
-
- if (!detail)
- continue;
-
- bgp_show_nexthops_detail(vty, bgp, bnc);
-
- } else {
- vty_out(vty, " %s invalid",
- inet_ntop(p->family, &p->u.prefix, buf,
- sizeof(buf)));
- if (peer)
- vty_out(vty, ", peer %s", peer->host);
- vty_out(vty, "\n");
- if (CHECK_FLAG(bnc->flags,
- BGP_NEXTHOP_CONNECTED))
- vty_out(vty, " Must be Connected\n");
- if (!CHECK_FLAG(bnc->flags,
- BGP_NEXTHOP_REGISTERED))
- vty_out(vty, " Is not Registered\n");
- }
- tbuf = time(NULL) - (bgp_clock() - bnc->last_update);
- vty_out(vty, " Last update: %s", ctime(&tbuf));
- vty_out(vty, "\n");
+ bgp_show_nexthop(vty, bgp, rn, bnc, false);
}
}
}
static int show_ip_bgp_nexthop_table(struct vty *vty, const char *name,
- int detail, bool import_table)
+ const char *nhopip_str,
+ bool import_table)
{
struct bgp *bgp;
@@ -819,7 +856,31 @@ static int show_ip_bgp_nexthop_table(struct vty *vty, const char *name,
return CMD_WARNING;
}
- bgp_show_nexthops(vty, bgp, detail, import_table);
+ if (nhopip_str) {
+ struct prefix nhop;
+ struct bgp_table **table;
+ struct bgp_node *rn;
+ struct bgp_nexthop_cache *bnc;
+
+ if (!str2prefix(nhopip_str, &nhop)) {
+ vty_out(vty, "nexthop address is malformed\n");
+ return CMD_WARNING;
+ }
+ table = import_table ? \
+ bgp->import_check_table : bgp->nexthop_cache_table;
+ rn = bgp_node_lookup(table[family2afi(nhop.family)], &nhop);
+ if (!rn) {
+ vty_out(vty, "specified nexthop is not found\n");
+ return CMD_SUCCESS;
+ }
+ bnc = bgp_node_get_bgp_nexthop_info(rn);
+ if (!bnc) {
+ vty_out(vty, "specified nexthop does not have entry\n");
+ return CMD_SUCCESS;
+ }
+ bgp_show_nexthop(vty, bgp, rn, bnc, true);
+ } else
+ bgp_show_nexthops(vty, bgp, import_table);
return CMD_SUCCESS;
}
@@ -834,29 +895,36 @@ static void bgp_show_all_instances_nexthops_vty(struct vty *vty)
(bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
? VRF_DEFAULT_NAME
: bgp->name);
- bgp_show_nexthops(vty, bgp, 0, false);
+ bgp_show_nexthops(vty, bgp, false);
}
}
DEFUN (show_ip_bgp_nexthop,
show_ip_bgp_nexthop_cmd,
- "show [ip] bgp [<view|vrf> VIEWVRFNAME] nexthop [detail]",
+ "show [ip] bgp [<view|vrf> VIEWVRFNAME] nexthop [<A.B.C.D|X:X::X:X>] [detail]",
SHOW_STR
IP_STR
BGP_STR
BGP_INSTANCE_HELP_STR
"BGP nexthop table\n"
+ "IPv4 nexthop address\n"
+ "IPv6 nexthop address\n"
"Show detailed information\n")
{
int idx = 0;
+ int nh_idx = 0;
char *vrf = NULL;
+ char *nhop_ip = NULL;
if (argv_find(argv, argc, "view", &idx)
|| argv_find(argv, argc, "vrf", &idx))
vrf = argv[++idx]->arg;
- int detail = argv_find(argv, argc, "detail", &idx) ? 1 : 0;
- return show_ip_bgp_nexthop_table(vty, vrf, detail, false);
+ if (argv_find(argv, argc, "A.B.C.D", &nh_idx)
+ || argv_find(argv, argc, "X:X::X:X", &nh_idx))
+ nhop_ip = argv[nh_idx]->arg;
+
+ return show_ip_bgp_nexthop_table(vty, vrf, nhop_ip, false);
}
DEFUN (show_ip_bgp_import_check,
@@ -875,8 +943,8 @@ DEFUN (show_ip_bgp_import_check,
if (argv_find(argv, argc, "view", &idx)
|| argv_find(argv, argc, "vrf", &idx))
vrf = argv[++idx]->arg;
- int detail = argv_find(argv, argc, "detail", &idx) ? 1 : 0;
- return show_ip_bgp_nexthop_table(vty, vrf, detail, true);
+
+ return show_ip_bgp_nexthop_table(vty, vrf, NULL, true);
}
DEFUN (show_ip_bgp_instance_all_nexthop,
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-25 04:22:21 +0000