check in temporary version with compatibility hacks

[unix-history] / usr / src / sys / net / if_loop.c

diff --git a/usr/src/sys/net/if_loop.c b/usr/src/sys/net/if_loop.c
index 49dd339..5ca5118 100644 (file)
--- a/usr/src/sys/net/if_loop.c
+++ b/usr/src/sys/net/if_loop.c
@@ -1,25 +1,51 @@
-/*     if_loop.c       4.4     81/12/07        */
+/*
+ * Copyright (c) 1982, 1986 Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ *
+ *     @(#)if_loop.c   7.13 (Berkeley) %G%
+ */

 
 /*
  * Loopback interface driver for protocol testing and timing.
  */
 
 
 /*
  * Loopback interface driver for protocol testing and timing.
  */
 

-#include "../h/param.h"
-#include "../h/systm.h"
-#include "../h/mbuf.h"
-#include "../h/socket.h"
-#include "../net/in.h"
-#include "../net/in_systm.h"
+#include "param.h"
+#include "systm.h"
+#include "mbuf.h"
+#include "socket.h"
+#include "errno.h"
+#include "ioctl.h"
+

 #include "../net/if.h"
 #include "../net/if.h"

-#include "../net/ip.h"
-#include "../net/ip_var.h"
-#include "../h/mtpr.h"
+#include "../net/if_types.h"
+#include "../net/netisr.h"
+#include "../net/route.h"
+
+#include "machine/mtpr.h"
+
+#ifdef INET
+#include "../netinet/in.h"
+#include "../netinet/in_systm.h"
+#include "../netinet/in_var.h"
+#include "../netinet/ip.h"
+#endif
+
+#ifdef NS
+#include "../netns/ns.h"
+#include "../netns/ns_if.h"
+#endif
+
+#ifdef ISO
+#include "../netiso/iso.h"
+#include "../netiso/iso_var.h"
+#endif

 
 

-#define        LONET   254

 #define        LOMTU   (1024+512)
 
 struct ifnet loif;
 #define        LOMTU   (1024+512)
 
 struct ifnet loif;

-int    looutput();
+int    looutput(), loioctl();

 
 loattach()
 {
 
 loattach()
 {


@@ -27,36 +53,110 @@ loattach()
 
        ifp->if_name = "lo";
        ifp->if_mtu = LOMTU;
 
        ifp->if_name = "lo";
        ifp->if_mtu = LOMTU;

-       ifp->if_net = LONET;
-       ifp->if_addr = if_makeaddr(ifp->if_net, 0);
+       ifp->if_flags = IFF_LOOPBACK;
+       ifp->if_ioctl = loioctl;

        ifp->if_output = looutput;
        ifp->if_output = looutput;

+       ifp->if_type = IFT_LOOP;
+       ifp->if_hdrlen = 0;
+       ifp->if_addrlen = 0;

        if_attach(ifp);
 }
 
        if_attach(ifp);
 }
 

-looutput(ifp, m0, pf)
+looutput(ifp, m, dst, rt)

        struct ifnet *ifp;
        struct ifnet *ifp;

-       struct mbuf *m0;
-       int pf;
+       register struct mbuf *m;
+       struct sockaddr *dst;
+       register struct rtentry *rt;

 {
 {

-       int s = splimp();
+       int s, isr;
+       register struct ifqueue *ifq = 0;

 
 

+       if ((m->m_flags & M_PKTHDR) == 0)
+               panic("looutput no HDR");
+       m->m_pkthdr.rcvif = ifp;
+
+       if (rt && rt->rt_flags & RTF_REJECT) {
+               m_freem(m);
+               return (rt->rt_flags & RTF_HOST ? EHOSTUNREACH : ENETUNREACH);
+       }

        ifp->if_opackets++;
        ifp->if_opackets++;

-       switch (pf) {
+       ifp->if_obytes += m->m_pkthdr.len;
+       switch (dst->sa_family) {

 
 #ifdef INET
 
 #ifdef INET

-       case PF_INET:
-               IF_ENQUEUE(&ipintrq, m0);
-               setipintr();
+       case AF_INET:
+               ifq = &ipintrq;
+               isr = NETISR_IP;
+               break;
+#endif
+#ifdef NS
+       case AF_NS:
+               ifq = &nsintrq;
+               isr = NETISR_NS;
+               break;
+#endif
+#ifdef ISO
+       case AF_ISO:
+               ifq = &clnlintrq;
+               isr = NETISR_ISO;

                break;
 #endif
                break;
 #endif

-

        default:
        default:

+               printf("lo%d: can't handle af%d\n", ifp->if_unit,
+                       dst->sa_family);
+               m_freem(m);
+               return (EAFNOSUPPORT);
+       }
+       s = splimp();
+       if (IF_QFULL(ifq)) {
+               IF_DROP(ifq);
+               m_freem(m);

                splx(s);
                splx(s);

-               printf("lo%d: can't encapsulate pf%d\n", ifp->if_unit, pf);
-               m_freem(m0);
-               return (0);
+               return (ENOBUFS);

        }
        }

+       IF_ENQUEUE(ifq, m);
+       schednetisr(isr);

        ifp->if_ipackets++;
        ifp->if_ipackets++;

+       ifp->if_ibytes += m->m_pkthdr.len;

        splx(s);
        splx(s);

-       return (1);
+       return (0);
+}
+
+/* ARGSUSED */
+lortrequest(cmd, rt, sa)
+struct rtentry *rt;
+struct sockaddr *sa;
+{
+       if (rt)
+               rt->rt_rmx.rmx_mtu = LOMTU;
+}
+
+/*
+ * Process an ioctl request.
+ */
+/* ARGSUSED */
+loioctl(ifp, cmd, data)
+       register struct ifnet *ifp;
+       int cmd;
+       caddr_t data;
+{
+       register struct ifaddr *ifa;
+       int error = 0;
+
+       switch (cmd) {
+
+       case SIOCSIFADDR:
+               ifp->if_flags |= IFF_UP;
+               ifa = (struct ifaddr *)data;
+               if (ifa != 0 && ifa->ifa_addr->sa_family == AF_ISO)
+                       ifa->ifa_rtrequest = lortrequest;
+               /*
+                * Everything else is done at a higher level.
+                */
+               break;
+
+       default:
+               error = EINVAL;
+       }
+       return (error);

 }
 }