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bgpd: Show BGP prefixes by community alias

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This includes both community/large-community.

Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>
This commit is contained in:
Donatas Abraitis 2021-05-19 17:04:48 +03:00
parent 2794d40202
commit a70a28a577
2 changed files with 98 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
bgpd/bgp_route.c
View File

@ -23,6 +23,7 @@
#include <math.h>
#include "printfrr.h"
#include "frrstr.h"
#include "prefix.h"
#include "linklist.h"
#include "memory.h"
@ -10570,7 +10571,6 @@ static int bgp_show_community(struct vty *vty, struct bgp *bgp,
const char *comstr, int exact, afi_t afi,
safi_t safi, uint8_t show_flags);
static int bgp_show_table(struct vty *vty, struct bgp *bgp, safi_t safi,
struct bgp_table *table, enum bgp_show_type type,
void *output_arg, char *rd, int is_last,
@ -10647,6 +10647,48 @@ static int bgp_show_table(struct vty *vty, struct bgp *bgp, safi_t safi,
continue;
}
if (type == bgp_show_type_community_alias) {
char *alias = output_arg;
char **communities;
int num;
bool found = false;
if (pi->attr->community) {
frrstr_split(pi->attr->community->str,
" ", &communities, &num);
for (int i = 0; i < num; i++) {
const char *com2alias =
bgp_community2alias(
communities[i]);
if (strncmp(alias, com2alias,
strlen(com2alias))
== 0) {
found = true;
break;
}
}
}
if (!found && pi->attr->lcommunity) {
frrstr_split(pi->attr->lcommunity->str,
" ", &communities, &num);
for (int i = 0; i < num; i++) {
const char *com2alias =
bgp_community2alias(
communities[i]);
if (strncmp(alias, com2alias,
strlen(com2alias))
== 0) {
found = true;
break;
}
}
}
if (!found)
continue;
}
if (type == bgp_show_type_rpki) {
if (dest_p->family == AF_INET
|| dest_p->family == AF_INET6)
@ -11920,9 +11962,10 @@ DEFPY(show_ip_bgp, show_ip_bgp_cmd,
}
/* BGP route print out function with JSON */
DEFPY (show_ip_bgp_json,
show_ip_bgp_json_cmd,
"show [ip] bgp [<view|vrf> VIEWVRFNAME] ["BGP_AFI_CMD_STR" ["BGP_SAFI_WITH_LABEL_CMD_STR"]]\
DEFPY(show_ip_bgp_json, show_ip_bgp_json_cmd,
"show [ip] bgp [<view|vrf> VIEWVRFNAME] [" BGP_AFI_CMD_STR
" [" BGP_SAFI_WITH_LABEL_CMD_STR
"]]\
[all$all]\
[cidr-only\
|dampening <flap-statistics|dampened-paths>\
@ -11933,20 +11976,16 @@ DEFPY (show_ip_bgp_json,
|route-filter-translated-v4] [exact-match]\
|rpki <invalid|valid|notfound>\
|version (1-4294967295)\
|alias WORD\
] [json$uj [detail$detail] | wide$wide]",
SHOW_STR
IP_STR
BGP_STR
BGP_INSTANCE_HELP_STR
BGP_AFI_HELP_STR
SHOW_STR IP_STR BGP_STR BGP_INSTANCE_HELP_STR BGP_AFI_HELP_STR
BGP_SAFI_WITH_LABEL_HELP_STR
"Display the entries for all address families\n"
"Display only routes with non-natural netmasks\n"
"Display detailed information about dampening\n"
"Display flap statistics of routes\n"
"Display paths suppressed due to dampening\n"
"Display routes matching the communities\n"
COMMUNITY_AANN_STR
"Display routes matching the communities\n" COMMUNITY_AANN_STR
"Do not send outside local AS (well-known community)\n"
"Do not advertise to any peer (well-known community)\n"
"Do not export to next AS (well-known community)\n"
@ -11968,7 +12007,8 @@ DEFPY (show_ip_bgp_json,
"A path that has no rpki data\n"
"Display prefixes with matching version numbers\n"
"Version number and above\n"
JSON_STR
"Display prefixes with matching BGP community alias\n"
"BGP community alias\n" JSON_STR
"Display detailed version of JSON output\n"
"Increase table width for longer prefixes\n")
{
@ -11980,6 +12020,7 @@ DEFPY (show_ip_bgp_json,
int exact_match = 0;
char *community = NULL;
char *prefix_version = NULL;
char *bgp_community_alias = NULL;
bool first = true;
uint8_t show_flags = 0;
enum rpki_states rpki_target_state = RPKI_NOT_BEING_USED;
@ -12056,6 +12097,12 @@ DEFPY (show_ip_bgp_json,
prefix_version = argv[idx + 1]->arg;
}
/* Display prefixes with matching BGP community alias */
if (argv_find(argv, argc, "alias", &idx)) {
sh_type = bgp_show_type_community_alias;
bgp_community_alias = argv[idx + 1]->arg;
}
if (!all) {
/* show bgp: AFI_IP6, show ip bgp: AFI_IP */
if (community)
@ -12066,6 +12113,10 @@ DEFPY (show_ip_bgp_json,
return bgp_show(vty, bgp, afi, safi, sh_type,
prefix_version, show_flags,
rpki_target_state);
else if (bgp_community_alias)
return bgp_show(vty, bgp, afi, safi, sh_type,
bgp_community_alias, show_flags,
rpki_target_state);
else
return bgp_show(vty, bgp, afi, safi, sh_type, NULL,
show_flags, rpki_target_state);
@ -12108,6 +12159,11 @@ DEFPY (show_ip_bgp_json,
sh_type, prefix_version,
show_flags,
rpki_target_state);
else if (bgp_community_alias)
return bgp_show(
vty, bgp, afi, safi, sh_type,
bgp_community_alias, show_flags,
rpki_target_state);
else
bgp_show(vty, bgp, afi, safi, sh_type,
NULL, show_flags,

1
bgpd/bgp_route.h
View File

@ -42,6 +42,7 @@ enum bgp_show_type {
bgp_show_type_neighbor,
bgp_show_type_cidr_only,
bgp_show_type_prefix_longer,
bgp_show_type_community_alias,
bgp_show_type_community_all,
bgp_show_type_community,
bgp_show_type_community_exact,