/*
- * Copyright (c) 1982 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
+ * Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
+ * All rights reserved.
*
- * @(#)ns_pcb.c 6.3 (Berkeley) %G%
+ * %sccs.include.redist.c%
+ *
+ * @(#)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"
ns_pcballoc(so, head)
struct socket *so;
- struct nsp *head;
+ struct nspcb *head;
{
struct mbuf *m;
register struct nspcb *nsp;
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 mbuf *nam;
{
struct ns_ifaddr *ia;
- struct sockaddr_ns *ifaddr;
register struct sockaddr_ns *sns = mtod(nam, struct sockaddr_ns *);
+ 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) &&
- ((*(long *)&nsp->nsp_lastnet)!=ns_netof(sns->sns_addr))) {
- ia = (struct ns_ifaddr *)ifa_ifwithnet((struct sockaddr *)sns);
- if (ia == 0) {
- register struct route *ro;
- struct ifnet *ifp;
-
- /*
- * If route is known or can be allocated now,
- * our src addr is taken from the i/f, else punt.
- */
- ro = &nsp->nsp_route;
-#define satosns(sa) ((struct sockaddr_ns *)(sa))
- if (ro->ro_rt &&
- !ns_hosteq(satosns(&ro->ro_dst)->sns_addr,
- sns->sns_addr)) {
+ /*
+ * 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;
- }
- if ((ro->ro_rt == (struct rtentry *)0) ||
- (ifp = ro->ro_rt->rt_ifp) == (struct ifnet *)0) {
- /* No route yet, so try to acquire one */
- ro->ro_dst.sa_family = AF_NS;
- satosns(&ro->ro_dst)->sns_addr =
- sns->sns_addr;
- rtalloc(ro);
- if (ro->ro_rt == 0)
- ifp = (struct ifnet *)0;
- else
- ifp = ro->ro_rt->rt_ifp;
- }
- if (ifp) {
- for (ia = ns_ifaddr; ia; ia = ia->ia_next)
- if (ia->ia_ifp == ifp)
- break;
- }
+ 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.
+ */
+
+ ia = (struct ns_ifaddr *)0;
+ /*
+ * If we found a route, use the address
+ * corresponding to the outgoing interface
+ */
+ if (ro->ro_rt && (ifp = ro->ro_rt->rt_ifp))
+ for (ia = ns_ifaddr; ia; ia = ia->ia_next)
+ if (ia->ia_ifp == ifp)
+ break;
+ if (ia == 0) {
+ u_short fport = sns->sns_addr.x_port;
+ sns->sns_addr.x_port = 0;
+ ia = (struct ns_ifaddr *)
+ ifa_ifwithdstaddr((struct sockaddr *)sns);
+ sns->sns_addr.x_port = fport;
+ if (ia == 0)
+ ia = ns_iaonnetof(&sns->sns_addr);
if (ia == 0)
ia = ns_ifaddr;
if (ia == 0)
return (EADDRNOTAVAIL);
}
- ifaddr = satosns(&ia->ia_addr);
- nsp->nsp_laddr.x_net = ifaddr->sns_addr.x_net;
- nsp->nsp_lastnet = sns->sns_addr.x_net;
+ nsp->nsp_laddr.x_net = satons_addr(ia->ia_addr).x_net;
}
if (ns_pcblookup(&sns->sns_addr, nsp->nsp_lport, 0))
return (EADDRINUSE);
if (ns_nullhost(nsp->nsp_laddr)) {
if (nsp->nsp_lport == 0)
- ns_pcbbind(nsp, (struct mbuf *)0);
+ (void) ns_pcbbind(nsp, (struct mbuf *)0);
nsp->nsp_laddr.x_host = ns_thishost;
}
nsp->nsp_faddr = sns->sns_addr;
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;
}
splx(s);
}
+#ifdef notdef
/*
* After a routing change, flush old routing
* and allocate a (hopefully) better one.
}
/* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
}
+#endif
struct nspcb *
ns_pcblookup(faddr, lport, wildp)
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++;