* Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
* All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted
- * provided that this notice is preserved and that due credit is given
- * to the University of California at Berkeley. The name of the University
- * may not be used to endorse or promote products derived from this
- * software without specific prior written permission. This software
- * is provided ``as is'' without express or implied warranty.
+ * %sccs.include.redist.c%
*
- * @(#)ns_pcb.c 7.3 (Berkeley) %G%
+ * @(#)ns_pcb.c 7.10 (Berkeley) %G%
*/
#include "param.h"
#include "systm.h"
-#include "dir.h"
#include "user.h"
#include "mbuf.h"
#include "socket.h"
register struct sockaddr_ns *sns;
u_short lport = 0;
- if(nsp->nsp_lport || !ns_nullhost(nsp->nsp_laddr))
+ if (nsp->nsp_lport || !ns_nullhost(nsp->nsp_laddr))
return (EINVAL);
if (nam == 0)
goto noname;
{
struct ns_ifaddr *ia;
register struct sockaddr_ns *sns = mtod(nam, struct sockaddr_ns *);
- struct sockaddr_ns *ifaddr;
register struct ns_addr *dst;
+ register struct route *ro;
+ struct ifnet *ifp;
if (nam->m_len != sizeof (*sns))
return (EINVAL);
return (EAFNOSUPPORT);
if (sns->sns_port==0 || ns_nullhost(sns->sns_addr))
return (EADDRNOTAVAIL);
- if (ns_nullhost(nsp->nsp_laddr)) {
- register struct route *ro;
- struct ifnet *ifp;
+ /*
+ * If we haven't bound which network number to use as ours,
+ * we will use the number of the outgoing interface.
+ * This depends on having done a routing lookup, which
+ * we will probably have to do anyway, so we might
+ * as well do it now. On the other hand if we are
+ * sending to multiple destinations we may have already
+ * done the lookup, so see if we can use the route
+ * from before. In any case, we only
+ * chose a port number once, even if sending to multiple
+ * destinations.
+ */
+ ro = &nsp->nsp_route;
+ dst = &satons_addr(ro->ro_dst);
+ if (nsp->nsp_socket->so_options & SO_DONTROUTE)
+ goto flush;
+ if (!ns_neteq(nsp->nsp_lastdst, sns->sns_addr))
+ goto flush;
+ if (!ns_hosteq(nsp->nsp_lastdst, sns->sns_addr)) {
+ if (ro->ro_rt && ! (ro->ro_rt->rt_flags & RTF_HOST)) {
+ /* can patch route to avoid rtalloc */
+ *dst = sns->sns_addr;
+ } else {
+ flush:
+ if (ro->ro_rt)
+ RTFREE(ro->ro_rt);
+ ro->ro_rt = (struct rtentry *)0;
+ nsp->nsp_laddr.x_net = ns_zeronet;
+ }
+ }/* else cached route is ok; do nothing */
+ nsp->nsp_lastdst = sns->sns_addr;
+ if ((nsp->nsp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
+ (ro->ro_rt == (struct rtentry *)0 ||
+ ro->ro_rt->rt_ifp == (struct ifnet *)0)) {
+ /* No route yet, so try to acquire one */
+ ro->ro_dst.sa_family = AF_NS;
+ ro->ro_dst.sa_len = sizeof(ro->ro_dst);
+ *dst = sns->sns_addr;
+ dst->x_port = 0;
+ rtalloc(ro);
+ }
+ if (ns_neteqnn(nsp->nsp_laddr.x_net, ns_zeronet)) {
/*
* If route is known or can be allocated now,
* our src addr is taken from the i/f, else punt.
*/
- ro = &nsp->nsp_route;
- dst = &satons_addr(ro->ro_dst);
ia = (struct ns_ifaddr *)0;
- if (ro->ro_rt) {
- if ((!ns_neteq(nsp->nsp_lastdst, sns->sns_addr)) ||
- ((ifp = ro->ro_rt->rt_ifp) &&
- (ifp->if_flags & IFF_POINTOPOINT) &&
- (!ns_hosteq(nsp->nsp_lastdst, sns->sns_addr))) ||
- (nsp->nsp_socket->so_options & SO_DONTROUTE)) {
- RTFREE(ro->ro_rt);
- ro->ro_rt = (struct rtentry *)0;
- }
- }
- if ((nsp->nsp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
- (ro->ro_rt == (struct rtentry *)0 ||
- ro->ro_rt->rt_ifp == (struct ifnet *)0)) {
- /* No route yet, so try to acquire one */
- ro->ro_dst.sa_family = AF_NS;
- *dst = sns->sns_addr;
- dst->x_port = 0;
- rtalloc(ro);
- }
/*
* If we found a route, use the address
* corresponding to the outgoing interface
return (EADDRNOTAVAIL);
}
nsp->nsp_laddr.x_net = satons_addr(ia->ia_addr).x_net;
- nsp->nsp_lastdst = sns->sns_addr;
}
if (ns_pcblookup(&sns->sns_addr, nsp->nsp_lport, 0))
return (EADDRINUSE);
nam->m_len = sizeof (*sns);
sns = mtod(nam, struct sockaddr_ns *);
bzero((caddr_t)sns, sizeof (*sns));
+ sns->sns_len = sizeof(*sns);
sns->sns_family = AF_NS;
sns->sns_addr = nsp->nsp_laddr;
}
nam->m_len = sizeof (*sns);
sns = mtod(nam, struct sockaddr_ns *);
bzero((caddr_t)sns, sizeof (*sns));
+ sns->sns_len = sizeof(*sns);
sns->sns_family = AF_NS;
sns->sns_addr = nsp->nsp_faddr;
}
else {
if (!ns_hosteq(nsp->nsp_faddr, *faddr))
continue;
- if( nsp->nsp_fport != fport) {
- if(nsp->nsp_fport != 0)
+ if (nsp->nsp_fport != fport) {
+ if (nsp->nsp_fport != 0)
continue;
else
wildcard++;