From 28b7b3ac46fb9369695f70ad210291f7a919568d Mon Sep 17 00:00:00 2001
From: Henning Brauer <henning@cvs.openbsd.org>
Date: Sun, 4 Jan 2004 18:51:24 +0000
Subject: allow "show neighbor" to be limited to one specific neighbor

---
 usr.sbin/bgpd/bgpd.h    | 12 +++++++++++-
 usr.sbin/bgpd/control.c | 19 +++++++++++++++----
 usr.sbin/bgpd/session.c |  4 +---
 usr.sbin/bgpd/session.h |  8 +++++---
 4 files changed, 32 insertions(+), 11 deletions(-)

(limited to 'usr.sbin/bgpd')

diff --git a/usr.sbin/bgpd/bgpd.h b/usr.sbin/bgpd/bgpd.h
index f7d8f6ba2bf..2f97b8a0c74 100644
--- a/usr.sbin/bgpd/bgpd.h
+++ b/usr.sbin/bgpd/bgpd.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bgpd.h,v 1.50 2004/01/03 20:37:34 henning Exp $ */
+/*	$OpenBSD: bgpd.h,v 1.51 2004/01/04 18:51:23 henning Exp $ */
 
 /*
  * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
@@ -75,6 +75,16 @@ struct msgbuf {
 	TAILQ_HEAD(bufs, buf)	 bufs;
 };
 
+struct bgpd_addr {
+	sa_family_t	af;
+	union {
+		struct in_addr		v4;
+		struct in6_addr		v6;
+	} ba;		    /* 128-bit address */
+#define v4	ba.v4
+#define v6	ba.v6
+};
+
 struct bgpd_config {
 	int			 opts;
 	u_int16_t		 as;
diff --git a/usr.sbin/bgpd/control.c b/usr.sbin/bgpd/control.c
index fbeb4f22f24..7eb6dda7f69 100644
--- a/usr.sbin/bgpd/control.c
+++ b/usr.sbin/bgpd/control.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: control.c,v 1.7 2004/01/03 20:22:07 henning Exp $ */
+/*	$OpenBSD: control.c,v 1.8 2004/01/04 18:51:23 henning Exp $ */
 
 /*
  * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
@@ -173,6 +173,7 @@ control_dispatch_msg(struct pollfd *pfd, int i)
 	struct ctl_conn		*c;
 	int			 n;
 	struct peer		*p;
+	struct bgpd_addr	*addr;
 
 	if ((c = control_connbyfd(pfd->fd)) == NULL) {
 		log_err("control_dispatch_msg: fd %d: not found", pfd->fd);
@@ -195,9 +196,19 @@ control_dispatch_msg(struct pollfd *pfd, int i)
 
 		switch (imsg.hdr.type) {
 		case IMSG_CTL_SHOW_NEIGHBOR:
-			for (p = peers; p != NULL; p = p->next)
-				imsg_compose(&c->ibuf, IMSG_CTL_SHOW_NEIGHBOR,
-				    0, p, sizeof(struct peer));
+			if (imsg.hdr.len == IMSG_HEADER_SIZE +
+			    sizeof(struct bgpd_addr)) {
+				addr = imsg.data;
+				p = getpeerbyip(addr->v4.s_addr);
+				if (p != NULL)
+					imsg_compose(&c->ibuf,
+					    IMSG_CTL_SHOW_NEIGHBOR,
+					    0, p, sizeof(struct peer));
+			} else
+				for (p = peers; p != NULL; p = p->next)
+					imsg_compose(&c->ibuf,
+					    IMSG_CTL_SHOW_NEIGHBOR,
+					    0, p, sizeof(struct peer));
 			imsg_compose(&c->ibuf, IMSG_CTL_END, 0, NULL, 0);
 			break;
 		default:
diff --git a/usr.sbin/bgpd/session.c b/usr.sbin/bgpd/session.c
index 25c01842f45..f7df8dfbc99 100644
--- a/usr.sbin/bgpd/session.c
+++ b/usr.sbin/bgpd/session.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: session.c,v 1.59 2004/01/04 17:19:41 henning Exp $ */
+/*	$OpenBSD: session.c,v 1.60 2004/01/04 18:51:23 henning Exp $ */
 
 /*
  * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
@@ -78,8 +78,6 @@ void	session_dispatch_imsg(struct imsgbuf *, int);
 void	session_up(struct peer *);
 void	session_down(struct peer *);
 
-struct peer	*getpeerbyip(in_addr_t);
-
 struct bgpd_config	*conf, *nconf = NULL;
 struct peer		*npeers;
 volatile sig_atomic_t	 session_quit = 0;
diff --git a/usr.sbin/bgpd/session.h b/usr.sbin/bgpd/session.h
index 8ad48abdd65..96be2a88899 100644
--- a/usr.sbin/bgpd/session.h
+++ b/usr.sbin/bgpd/session.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: session.h,v 1.7 2004/01/03 22:44:29 henning Exp $ */
+/*	$OpenBSD: session.h,v 1.8 2004/01/04 18:51:23 henning Exp $ */
 
 /*
  * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
@@ -144,9 +144,11 @@ struct peer {
 struct peer	*peers;
 
 /* session.c */
-void		 session_socket_blockmode(int, enum blockmodes);
-int		 session_main(struct bgpd_config *, struct peer *, int[2],
+void		  session_socket_blockmode(int, enum blockmodes);
+int		  session_main(struct bgpd_config *, struct peer *, int[2],
 		    int[2]);
+struct peer	*getpeerbyip(in_addr_t);
+
 
 /* log.c */
 void		 log_peer_err(const struct peer *, const char *, ...);
-- 
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