X-Git-Url: https://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fmultilink.c;h=c3a782f284662df0fce296d1e83518bd9a654f5f;hp=23f0fa084962a4ffb7baa345919f58b9b2ab6068;hb=cffe80dd87a8ba3fba8f56fda45d2c0cfd62ba4d;hpb=141e4209b6e794a91035fa1cb63ab88fca0fb150

diff --git a/pppd/multilink.c b/pppd/multilink.c
index 23f0fa0..c3a782f 100644
--- a/pppd/multilink.c
+++ b/pppd/multilink.c
@@ -49,7 +49,7 @@ static int owns_unit __P((TDB_DATA pid, int unit));
 	 || ((addr) & 0xfff00000) == 0xac100000		/* 172.16.x.x */  \
 	 || ((addr) & 0xffff0000) == 0xc0a80000)	/* 192.168.x.x */
 
-#define process_exists(n)	(kill(0, (n)) == 0 || errno != ESRCH)
+#define process_exists(n)	(kill((n), 0) == 0 || errno != ESRCH)
 
 void
 mp_check_options()
@@ -86,8 +86,9 @@ mp_join_bundle()
 {
 	lcp_options *go = &lcp_gotoptions[0];
 	lcp_options *ho = &lcp_hisoptions[0];
+	lcp_options *ao = &lcp_allowoptions[0];
 	int unit, pppd_pid;
-	int l;
+	int l, mtu;
 	char *p;
 	TDB_DATA key, pid, rec;
 
@@ -95,12 +96,17 @@ mp_join_bundle()
 		/* not doing multilink */
 		if (go->neg_mrru)
 			notice("oops, multilink negotiated only for receive");
+		mtu = ho->neg_mru? ho->mru: PPP_MRU;
+		if (mtu > ao->mru)
+			mtu = ao->mru;
 		if (demand) {
 			/* already have a bundle */
 			cfg_bundle(0, 0, 0, 0);
+			netif_set_mtu(0, mtu);
 			return 0;
 		}
 		make_new_bundle(0, 0, 0, 0);
+		netif_set_mtu(0, mtu);
 		set_ifunit(1);
 		return 0;
 	}
@@ -134,8 +140,10 @@ mp_join_bundle()
 	 * For demand mode, we only need to configure the bundle
 	 * and attach the link.
 	 */
+	mtu = MIN(ho->mrru, ao->mru);
 	if (demand) {
 		cfg_bundle(go->mrru, ho->mrru, go->neg_ssnhf, ho->neg_ssnhf);
+		netif_set_mtu(0, mtu);
 		script_setenv("BUNDLE", bundle_id + 7, 1);
 		return 0;
 	}
@@ -178,6 +186,7 @@ mp_join_bundle()
 
 	/* we have to make a new bundle */
 	make_new_bundle(go->mrru, ho->mrru, go->neg_ssnhf, ho->neg_ssnhf);
+	netif_set_mtu(0, mtu);
 	set_ifunit(1);
 	script_setenv("BUNDLE", bundle_id + 7, 1);
 	tdb_writeunlock(pppdb);