shithub: riscv

Info  •  Files  •  Log  •  Branches

ip/ipconfig: check for recvra 0 on timeout

--- a/sys/src/cmd/ip/ipconfig/ipv6.c

+++ b/sys/src/cmd/ip/ipconfig/ipv6.c

@@ -824,9 +824,11 @@

 		sleepfor = alarm(0);

 		/* wait for alarm to expire */

-		if(sendrscnt < 0 && sleepfor > 100)

+		if(recvracnt == 0 && sleepfor > 100)

 			continue;

+		sleepfor = Maxv6radelay;

+

 		ifc = readipifc(conf.mpoint, ifc, myifc);

 		if(ifc == nil) {

 			warning("recvra6: can't read router params on %s, quitting on %s",

@@ -836,6 +838,13 @@

 			exits(nil);

 		}

+		if(recvra6on(ifc) == IsHostNoRecv){

+			warning("recvra6: recvra off, quitting on %s", conf.dev);

+			if(sendrscnt >= 0)

+				rendezvous(recvra6, (void*)-1);

+			exits(nil);

+		}

+

 		if(n <= 0) {

 			if(sendrscnt > 0) {

 				sendrscnt--;

@@ -847,7 +856,6 @@

 				warning("recvra6: no router advs after %d sols on %s",

 					Maxv6rss, conf.dev);

 				rendezvous(recvra6, (void*)0);

-				sleepfor = 0;

 			}

 			continue;

 		}

@@ -859,11 +867,6 @@

 		case IsHostRecv:

 			recvrahost(buf, n);

 			break;

-		case IsHostNoRecv:

-			warning("recvra6: recvra off, quitting on %s", conf.dev);

-			if(sendrscnt >= 0)

-				rendezvous(recvra6, (void*)-1);

-			exits(nil);

 		}

 		/* got at least initial ra; no whining */

@@ -870,14 +873,11 @@

 		if(sendrscnt >= 0)

 			rendezvous(recvra6, (void*)1);

 		sendrscnt = -1;

-		sleepfor = 0;

 		if(recvracnt > 0)

 			recvracnt--;

-		else {

+		else

 			recvracnt = Maxv6initras;

-			sleepfor = Maxv6radelay;

-		}

 	}

 }