Extend route command:

	- add show as alias for get
	- add weights to allow mpath to do more than equal cost
	- add sticky / nostick to disable / re-enable per-connection load balancing

This adds a field to rt_metrics_lite so network bits of world will need to be re-built.

Reviewed by:	jeli & qingli

1 files changed, 20 insertions, 11 deletions

diff --git a/sbin/route/route.c b/sbin/route/route.c
index 1b0985e..e20cedb 100644
--- a/sbin/route/route.c
+++ b/sbin/route/route.c
@@ -169,6 +169,7 @@ main(argc, argv)
 	if (*argv)
 		switch (keyword(*argv)) {
 		case K_GET:
+		case K_SHOW:
 			uid = 0;
 			/* FALLTHROUGH */
 
@@ -548,6 +549,7 @@ set_metric(value, key)
 	caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
 	caseof(K_RTT, RTV_RTT, rmx_rtt);
 	caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
+	caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
 	}
 	rtm_inits |= flag;
 	if (lockrest || locking)
@@ -571,8 +573,9 @@ newroute(argc, argv)
 		errx(EX_NOPERM, "must be root to alter routing table");
 	}
 	cmd = argv[0];
-	if (*cmd != 'g')
+	if (*cmd != 'g' && *cmd != 's')
 		shutdown(s, SHUT_RD); /* Don't want to read back our messages */
+
 	while (--argc > 0) {
 		if (**(++argv)== '-') {
 			switch (key = keyword(1 + *argv)) {
@@ -635,6 +638,12 @@ newroute(argc, argv)
 			case K_STATIC:
 				flags |= RTF_STATIC;
 				break;
+			case K_STICKY:
+				flags |= RTF_STICKY;
+				break;
+			case K_NOSTICK:
+				flags &= ~RTF_STICKY;
+				break;
 			case K_IFA:
 				if (!--argc)
 					usage((char *)NULL);
@@ -688,6 +697,7 @@ newroute(argc, argv)
 			case K_SSTHRESH:
 			case K_RTT:
 			case K_RTTVAR:
+			case K_WEIGHT:
 				if (!--argc)
 					usage((char *)NULL);
 				set_metric(*++argv, key);
@@ -741,7 +751,7 @@ newroute(argc, argv)
 		} else
 			break;
 	}
-	if (*cmd == 'g')
+	if (*cmd == 'g' || *cmd == 's')
 		exit(ret != 0);
 	if (!qflag) {
 		oerrno = errno;
@@ -1193,7 +1203,7 @@ rtmsg(cmd, flags)
 		cmd = RTM_ADD;
 	else if (cmd == 'c')
 		cmd = RTM_CHANGE;
-	else if (cmd == 'g') {
+	else if (cmd == 'g' || cmd == 's') {
 		cmd = RTM_GET;
 		if (so_ifp.sa.sa_family == 0) {
 			so_ifp.sa.sa_family = AF_LINK;
@@ -1297,13 +1307,13 @@ char *msgtypes[] = {
 };
 
 char metricnames[] =
-"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount"
+"\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
 "\1mtu";
 char routeflags[] =
-"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
-"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
-"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
-"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
+"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
+"\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
+"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
+"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
 char ifnetflags[] =
 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
@@ -1466,14 +1476,13 @@ print_getmsg(rtm, msglen)
 #define msec(u)	(((u) + 500) / 1000)		/* usec to msec */
 
 	(void) printf("\n%s\n", "\
- recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount      mtu     expire");
+ recvpipe  sendpipe  ssthresh  rtt,msec    mtu        weight    expire");
 	printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
 	printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
 	printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
 	printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
-	printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
-	printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
 	printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
+	printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
 	if (rtm->rtm_rmx.rmx_expire)
 		rtm->rtm_rmx.rmx_expire -= time(0);
 	printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));