kludge to properly restrict broadcast

SCCS-vsn: sys/vax/if/if_en.c 4.52

diff --git a/usr/src/sys/vax/if/if_en.c b/usr/src/sys/vax/if/if_en.c
index b9fe1c5..30d3212 100644 (file)
--- a/usr/src/sys/vax/if/if_en.c
+++ b/usr/src/sys/vax/if/if_en.c
@@ -1,4 +1,4 @@
-/*     if_en.c 4.51    82/04/04        */
+/*     if_en.c 4.52    82/04/07        */

 
 #include "en.h"
 #include "imp.h"
 
 #include "en.h"
 #include "imp.h"


@@ -463,7 +463,10 @@ COUNT(ENOUTPUT);
 
 #ifdef INET
        case AF_INET:
 
 #ifdef INET
        case AF_INET:

-               dest = ((struct sockaddr_in *)dst)->sin_addr.s_addr >> 24;
+               dest = ((struct sockaddr_in *)dst)->sin_addr.s_addr;
+               if (dest & 0x00ffff00)
+                       goto drop;
+               dest = (dest >> 24) & 0xff;

                off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len;
                if (off > 0 && (off & 0x1ff) == 0 &&
                    m->m_off >= MMINOFF + 2 * sizeof (u_short)) {
                off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len;
                if (off > 0 && (off & 0x1ff) == 0 &&
                    m->m_off >= MMINOFF + 2 * sizeof (u_short)) {


@@ -536,15 +539,17 @@ gottype:
        s = splimp();
        if (IF_QFULL(&ifp->if_snd)) {
                IF_DROP(&ifp->if_snd);
        s = splimp();
        if (IF_QFULL(&ifp->if_snd)) {
                IF_DROP(&ifp->if_snd);

-               m_freem(m);
-               splx(s);
-               return (0);
+               goto bad;

        }
        IF_ENQUEUE(&ifp->if_snd, m);
        if (en_softc[ifp->if_unit].es_oactive == 0)
                enstart(ifp->if_unit);
        splx(s);
        return (1);
        }
        IF_ENQUEUE(&ifp->if_snd, m);
        if (en_softc[ifp->if_unit].es_oactive == 0)
                enstart(ifp->if_unit);
        splx(s);
        return (1);

+bad:
+       m_freem(m);
+       splx(s);
+       return (0);

 }
 
 #if NIMP == 0 && NEN > 0
 }
 
 #if NIMP == 0 && NEN > 0