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bgpd: Add 'show bgp listeners' command for diagnostics

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Add a command to display listen sockets and the vrf that they
are associated with.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2019-04-19 08:52:01 -04:00
parent 2bdced5ab3
commit 2a0e69ae3c
3 changed files with 36 additions and 0 deletions
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21
bgpd/bgp_network.c
View File

@ -57,8 +57,26 @@ struct bgp_listener {
union sockunion su;
struct thread *thread;
struct bgp *bgp;
char *name;
};
void bgp_dump_listener_info(struct vty *vty)
{
struct listnode *node;
struct bgp_listener *listener;
vty_out(vty, "Name fd Address\n");
vty_out(vty, "---------------------------\n");
for (ALL_LIST_ELEMENTS_RO(bm->listen_sockets, node, listener)) {
char buf[SU_ADDRSTRLEN];
vty_out(vty, "%-16s %d %s\n",
listener->name ? listener->name : VRF_DEFAULT_NAME,
listener->fd,
sockunion2str(&listener->su, buf, sizeof(buf)));
}
}
/*
* Set MD5 key for the socket, for the given IPv4 peer address.
* If the password is NULL or zero-length, the option will be disabled.
@ -762,6 +780,7 @@ static int bgp_listener(int sock, struct sockaddr *sa, socklen_t salen,
listener = XCALLOC(MTYPE_BGP_LISTENER, sizeof(*listener));
listener->fd = sock;
listener->name = XSTRDUP(MTYPE_BGP_LISTENER, bgp->name);
/* this socket needs a change of ns. record bgp back pointer */
if (bgp->vrf_id != VRF_DEFAULT && vrf_is_backend_netns())
@ -871,6 +890,7 @@ void bgp_close_vrf_socket(struct bgp *bgp)
thread_cancel(listener->thread);
close(listener->fd);
listnode_delete(bm->listen_sockets, listener);
XFREE(MTYPE_BGP_LISTENER, listener->name);
XFREE(MTYPE_BGP_LISTENER, listener);
}
}
@ -892,6 +912,7 @@ void bgp_close(void)
thread_cancel(listener->thread);
close(listener->fd);
listnode_delete(bm->listen_sockets, listener);
XFREE(MTYPE_BGP_LISTENER, listener->name);
XFREE(MTYPE_BGP_LISTENER, listener);
}
}

1
bgpd/bgp_network.h
View File

@ -23,6 +23,7 @@
#define BGP_SOCKET_SNDBUF_SIZE 65536
extern void bgp_dump_listener_info(struct vty *vty);
extern int bgp_socket(struct bgp *bgp, unsigned short port,
const char *address);
extern void bgp_close_vrf_socket(struct bgp *bgp);

14
bgpd/bgp_route.c
View File

@ -69,6 +69,7 @@
#include "bgpd/bgp_label.h"
#include "bgpd/bgp_addpath.h"
#include "bgpd/bgp_mac.h"
#include "bgpd/bgp_network.h"
#if ENABLE_BGP_VNC
#include "bgpd/rfapi/rfapi_backend.h"
@ -12766,6 +12767,18 @@ static void show_bgp_peerhash_entry(struct hash_bucket *bucket, void *arg)
sockunion2str(&peer->su, buf, sizeof(buf)));
}
DEFUN (show_bgp_listeners,
show_bgp_listeners_cmd,
"show bgp listeners",
SHOW_STR
BGP_STR
"Display Listen Sockets and who created them\n")
{
bgp_dump_listener_info(vty);
return CMD_SUCCESS;
}
DEFUN (show_bgp_peerhash,
show_bgp_peerhash_cmd,
"show bgp peerhash",
@ -13155,6 +13168,7 @@ void bgp_route_init(void)
/* show bgp ipv4 flowspec detailed */
install_element(VIEW_NODE, &show_ip_bgp_flowspec_routes_detailed_cmd);
install_element(VIEW_NODE, &show_bgp_listeners_cmd);
install_element(VIEW_NODE, &show_bgp_peerhash_cmd);
}