date and time created 92/11/17 19:59:32 by sklower

SCCS-vsn: sys/netiso/idrp_usrreq.c 7.1

diff --git a/usr/src/sys/netiso/idrp_usrreq.c b/usr/src/sys/netiso/idrp_usrreq.c
new file mode 100644 (file)
index 0000000..99dd065
--- /dev/null
+++ b/usr/src/sys/netiso/idrp_usrreq.c
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 1992 Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ *
+ *     @(#)idrp_usrreq.c       7.1 (Berkeley) %G%
+ */
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/protosw.h>
+#include <sys/errno.h>
+
+#include <net/route.h>
+#include <net/if.h>
+
+#include <netiso/argo_debug.h>
+#include <netiso/iso.h>
+#include <netiso/clnp.h>
+#include <netiso/clnl.h>
+#include <netiso/iso_pcb.h>
+#include <netiso/iso_var.h>
+
+int idrp_input();
+struct isopcb  idrp_isop;
+static struct  sockaddr_iso idrp_addrs[2] =
+{  { sizeof(idrp_addrs), AF_ISO, }, { sizeof(idrp_addrs[1]), AF_ISO, } };
+/*
+ * IDRP initialization
+ */
+idrp_init()
+{
+       extern struct clnl_protosw clnl_protox[256];
+
+       idrp_isop.isop_next = idrp_isop.isop_prev = &idrp_isop;
+       idrp_isop.isop_faddr = &idrp_isop.isop_sfaddr;
+       idrp_isop.isop_laddr = &idrp_isop.isop_sladdr;
+       idrp_isop.isop_sladdr = idrp_addrs[1];
+       idrp_isop.isop_sfaddr = idrp_addrs[1];
+       clnl_protox[ISO10747_IDRP].clnl_input = idrp_input;
+}
+
+/*
+ * CALLED FROM:
+ *     tpclnp_input().
+ * FUNCTION and ARGUMENTS:
+ * Take a packet (m) from clnp, strip off the clnp header
+ * and mke suitable for the idrp socket.
+ * No return value.  
+ */
+idrp_input(m, src, dst)
+       register struct mbuf *m;
+       struct sockaddr_iso *src, *dst;
+{
+       if (idrp_isop.isop_socket == 0) {
+       bad:    m_freem(m);
+               return 0;
+       }
+       bzero(idrp_addrs[0].siso_data, sizeof(idrp_addrs[0].siso_data));
+       bcopy((caddr_t)&(src->siso_addr), (caddr_t)&idrp_addrs[0].siso_addr,
+               1 + src->siso_nlen);
+       bzero(idrp_addrs[1].siso_data, sizeof(idrp_addrs[1].siso_data));
+       bcopy((caddr_t)&(dst->siso_addr), (caddr_t)&idrp_addrs[1].siso_addr,
+               1 + dst->siso_nlen);
+       if (sbappendaddr(&idrp_isop.isop_socket->so_rcv,
+               (struct sockaddr *)idrp_addrs, m, (struct mbuf *)0) == 0)
+               goto bad;
+       sorwakeup(idrp_isop.isop_socket);
+       return 0;
+}
+
+idrp_output(m, addr)
+       struct mbuf *m, *addr;
+{
+       register struct sockaddr_iso *siso = mtod(addr, struct sockaddr_iso *);
+       int s = splnet(), i;
+
+       bcopy((caddr_t)&(siso->siso_addr),
+             (caddr_t)&idrp_isop.isop_sfaddr.siso_addr, 1 + siso->siso_nlen);
+       siso++;
+       bcopy((caddr_t)&(siso->siso_addr),
+             (caddr_t)&idrp_isop.isop_sladdr.siso_addr, 1 + siso->siso_nlen);
+       i = clnp_output(m, idrp_isop, m->m_pkthdr.len, 0);
+       splx(s);
+       return (i);
+}
+
+u_long idrp_sendspace = 3072;          /* really max datagram size */
+u_long idrp_recvspace = 40 * 1024;     /* 40 1K datagrams */
+
+/*ARGSUSED*/
+idrp_usrreq(so, req, m, addr, control)
+       struct socket *so;
+       int req;
+       struct mbuf *m, *addr, *control;
+{
+       int error = 0;
+
+        /* Note: need to block idrp_input while changing
+        * the udp pcb queue and/or pcb addresses.
+        */
+       switch (req) {
+
+       case PRU_ATTACH:
+               if (idrp_isop.isop_socket != NULL) {
+                       error = ENXIO;
+                       break;
+               }
+               idrp_isop.isop_socket = so;
+               error = soreserve(so, idrp_sendspace, idrp_recvspace);
+               break;
+
+       case PRU_SHUTDOWN:
+               socantsendmore(so);
+               break;
+
+       case PRU_SEND:
+               return (idrp_output(m, addr));
+
+       case PRU_ABORT:
+               soisdisconnected(so);
+       case PRU_DETACH:
+               idrp_isop.isop_socket = 0;
+               break;
+
+
+       case PRU_SENSE:
+               /*
+                * stat: don't bother with a blocksize.
+                */
+               return (0);
+
+       default:
+               return (EOPNOTSUPP);    /* do not free mbuf's */
+       }
+
+release:
+       if (control) {
+               printf("idrp control data unexpectedly retained\n");
+               m_freem(control);
+       }
+       if (m)
+               m_freem(m);
+       return (error);
+}