* Copyright (c) 1982 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
* @(#)in_pcb.c 6.8 (Berkeley) %G%
#include "../net/route.h"
struct in_addr zeroin_addr
;
register struct inpcb
*inp
;
m
= m_getclr(M_DONTWAIT
, MT_PCB
);
inp
= mtod(m
, struct inpcb
*);
so
->so_pcb
= (caddr_t
)inp
;
register struct inpcb
*inp
;
register struct socket
*so
= inp
->inp_socket
;
register struct inpcb
*head
= inp
->inp_head
;
register struct sockaddr_in
*sin
;
if (inp
->inp_lport
|| inp
->inp_laddr
.s_addr
!= INADDR_ANY
)
sin
= mtod(nam
, struct sockaddr_in
*);
if (nam
->m_len
!= sizeof (*sin
))
if (sin
->sin_addr
.s_addr
!= INADDR_ANY
) {
int tport
= sin
->sin_port
;
sin
->sin_port
= 0; /* yech... */
if (ifa_ifwithaddr((struct sockaddr
*)sin
) == 0)
u_short aport
= ntohs(lport
);
if (aport
< IPPORT_RESERVED
&& u
.u_uid
!= 0)
/* even GROSSER, but this is the Internet */
if ((so
->so_options
& SO_REUSEADDR
) == 0 &&
((so
->so_proto
->pr_flags
& PR_CONNREQUIRED
) == 0 ||
(so
->so_options
& SO_ACCEPTCONN
) == 0))
wild
= INPLOOKUP_WILDCARD
;
zeroin_addr
, 0, sin
->sin_addr
, lport
, wild
))
inp
->inp_laddr
= sin
->sin_addr
;
if (head
->inp_lport
++ < IPPORT_RESERVED
)
head
->inp_lport
= IPPORT_RESERVED
;
lport
= htons(head
->inp_lport
);
} while (in_pcblookup(head
,
zeroin_addr
, 0, inp
->inp_laddr
, lport
, 0));
* Connect from a socket to a specified address.
* Both address and port must be specified in argument sin.
* If don't have a local address for this socket yet,
struct sockaddr_in
*ifaddr
;
register struct sockaddr_in
*sin
= mtod(nam
, struct sockaddr_in
*);
if (nam
->m_len
!= sizeof (*sin
))
if (sin
->sin_family
!= AF_INET
)
* If the destination address is INADDR_ANY,
* use the primary local address.
* If the supplied address is INADDR_BROADCAST,
* and the primary interface supports broadcast,
* choose the broadcast address for that interface.
#define satosin(sa) ((struct sockaddr_in *)(sa))
if (sin
->sin_addr
.s_addr
== INADDR_ANY
)
sin
->sin_addr
= IA_SIN(in_ifaddr
)->sin_addr
;
else if (sin
->sin_addr
.s_addr
== INADDR_BROADCAST
&&
(in_ifaddr
->ia_ifp
->if_flags
& IFF_BROADCAST
))
sin
->sin_addr
= satosin(&in_ifaddr
->ia_broadaddr
)->sin_addr
;
if (inp
->inp_laddr
.s_addr
== INADDR_ANY
) {
ia
= (struct in_ifaddr
*)ifa_ifwithnet((struct sockaddr
*)sin
);
if (ia
== (struct in_ifaddr
*)0) {
register struct route
*ro
;
* If route is known or can be allocated now,
* our src addr is taken from the i/f, else punt.
satosin(&ro
->ro_dst
)->sin_addr
.s_addr
!=
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_INET
;
((struct sockaddr_in
*) &ro
->ro_dst
)->sin_addr
=
for (ia
= in_ifaddr
; ia
; ia
= ia
->ia_next
)
ia
= (struct in_ifaddr
*)0;
ifaddr
= (struct sockaddr_in
*)&ia
->ia_addr
;
if (in_pcblookup(inp
->inp_head
,
inp
->inp_laddr
.s_addr
? inp
->inp_laddr
: ifaddr
->sin_addr
,
if (inp
->inp_laddr
.s_addr
== INADDR_ANY
) {
in_pcbbind(inp
, (struct mbuf
*)0);
inp
->inp_laddr
= ifaddr
->sin_addr
;
inp
->inp_faddr
= sin
->sin_addr
;
inp
->inp_fport
= sin
->sin_port
;
inp
->inp_faddr
.s_addr
= INADDR_ANY
;
if (inp
->inp_socket
->so_state
& SS_NOFDREF
)
struct socket
*so
= inp
->inp_socket
;
if (inp
->inp_route
.ro_rt
)
rtfree(inp
->inp_route
.ro_rt
);
(void) m_free(dtom(inp
));
register struct inpcb
*inp
;
register struct sockaddr_in
*sin
= mtod(nam
, struct sockaddr_in
*);
nam
->m_len
= sizeof (*sin
);
sin
= mtod(nam
, struct sockaddr_in
*);
bzero((caddr_t
)sin
, sizeof (*sin
));
sin
->sin_family
= AF_INET
;
sin
->sin_port
= inp
->inp_lport
;
sin
->sin_addr
= inp
->inp_laddr
;
register struct inpcb
*inp
;
register struct sockaddr_in
*sin
= mtod(nam
, struct sockaddr_in
*);
nam
->m_len
= sizeof (*sin
);
sin
= mtod(nam
, struct sockaddr_in
*);
bzero((caddr_t
)sin
, sizeof (*sin
));
sin
->sin_family
= AF_INET
;
sin
->sin_port
= inp
->inp_fport
;
sin
->sin_addr
= inp
->inp_faddr
;
* Pass some notification to all connections of a protocol
* associated with address dst. Call the
* protocol specific routine to handle each connection.
in_pcbnotify(head
, dst
, errno
, notify
)
register struct in_addr
*dst
;
register struct inpcb
*inp
, *oinp
;
for (inp
= head
->inp_next
; inp
!= head
;) {
if (inp
->inp_faddr
.s_addr
!= dst
->s_addr
) {
if (inp
->inp_socket
== 0)
inp
->inp_socket
->so_error
= errno
;
* After a routing change, flush old routing
* and allocate a (hopefully) better one.
if (inp
->inp_route
.ro_rt
) {
rtfree(inp
->inp_route
.ro_rt
);
inp
->inp_route
.ro_rt
= 0;
* A new route can be allocated the next time
/* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
in_pcblookup(head
, faddr
, fport
, laddr
, lport
, flags
)
struct in_addr faddr
, laddr
;
register struct inpcb
*inp
, *match
= 0;
int matchwild
= 3, wildcard
;
for (inp
= head
->inp_next
; inp
!= head
; inp
= inp
->inp_next
) {
if (inp
->inp_lport
!= lport
)
if (inp
->inp_laddr
.s_addr
!= INADDR_ANY
) {
if (laddr
.s_addr
== INADDR_ANY
)
else if (inp
->inp_laddr
.s_addr
!= laddr
.s_addr
)
if (laddr
.s_addr
!= INADDR_ANY
)
if (inp
->inp_faddr
.s_addr
!= INADDR_ANY
) {
if (faddr
.s_addr
== INADDR_ANY
)
else if (inp
->inp_faddr
.s_addr
!= faddr
.s_addr
||
if (faddr
.s_addr
!= INADDR_ANY
)
if (wildcard
&& (flags
& INPLOOKUP_WILDCARD
) == 0)
if (wildcard
< matchwild
) {