xnu-1504.3.12.tar.gz

[apple/xnu.git] / bsd / netinet / ip_output.c

diff --git a/bsd/netinet/ip_output.c b/bsd/netinet/ip_output.c
index eaf005f60cdd87b7532d5731f648a7920e72babd..a989e64e33da6224275720ec668870ec9deeac80 100644 (file)
--- a/bsd/netinet/ip_output.c
+++ b/bsd/netinet/ip_output.c
@@ -2633,7 +2633,6 @@ ip_setmoptions(sopt, imop)
        struct ip_moptions **imop;
 {
        int error = 0;
-       int i;
        struct in_addr addr;
        struct ip_mreq mreq;
        struct ifnet *ifp = NULL;
@@ -2654,20 +2653,23 @@ ip_setmoptions(sopt, imop)
        switch (sopt->sopt_name) {
        /* store an index number for the vif you wanna use in the send */
 #if MROUTING
-       case IP_MULTICAST_VIF:
-               if (legal_vif_num == 0) {
-                       error = EOPNOTSUPP;
-                       break;
-               }
-               error = sooptcopyin(sopt, &i, sizeof i, sizeof i);
-               if (error)
-                       break;
-               if (!legal_vif_num(i) && (i != -1)) {
-                       error = EINVAL;
+       case IP_MULTICAST_VIF: 
+               {
+                       int i;
+                       if (legal_vif_num == 0) {
+                               error = EOPNOTSUPP;
+                               break;
+                       }
+                       error = sooptcopyin(sopt, &i, sizeof i, sizeof i);
+                       if (error)
+                               break;
+                       if (!legal_vif_num(i) && (i != -1)) {
+                               error = EINVAL;
+                               break;
+                       }
+                       imo->imo_multicast_vif = i;
                        break;
                }
-               imo->imo_multicast_vif = i;
-               break;
 #endif /* MROUTING */
 
        case IP_MULTICAST_IF: