version 1.1.1.3, 1998/01/05 09:56:15 |
version 1.40, 1997/01/11 05:21:14 |
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/* $NetBSD$ */ |
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/* |
/* |
* Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995 |
* Copyright (c) 1982, 1986, 1988, 1990, 1993 |
* The Regents of the University of California. All rights reserved. |
* The Regents of the University of California. All rights reserved. |
* |
* |
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
* |
* |
* @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95 |
* @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94 |
*/ |
*/ |
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#include "ipkdb.h" |
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#include <sys/param.h> |
#include <sys/param.h> |
#include <sys/malloc.h> |
#include <sys/malloc.h> |
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#include <sys/socketvar.h> |
#include <sys/socketvar.h> |
#include <sys/errno.h> |
#include <sys/errno.h> |
#include <sys/stat.h> |
#include <sys/stat.h> |
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#include <sys/systm.h> |
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#include <sys/proc.h> |
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#include <vm/vm.h> |
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#include <sys/sysctl.h> |
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#include <net/if.h> |
#include <net/if.h> |
#include <net/route.h> |
#include <net/route.h> |
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#include <netinet/in.h> |
#include <netinet/in.h> |
#include <netinet/in_systm.h> |
#include <netinet/in_systm.h> |
|
#include <netinet/in_var.h> |
#include <netinet/ip.h> |
#include <netinet/ip.h> |
#include <netinet/in_pcb.h> |
#include <netinet/in_pcb.h> |
#include <netinet/ip_var.h> |
#include <netinet/ip_var.h> |
|
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#include <netinet/udp.h> |
#include <netinet/udp.h> |
#include <netinet/udp_var.h> |
#include <netinet/udp_var.h> |
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#include <machine/stdarg.h> |
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/* |
/* |
* UDP protocol implementation. |
* UDP protocol implementation. |
* Per RFC 768, August, 1980. |
* Per RFC 768, August, 1980. |
Line 64 int udpcksum = 1; |
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Line 75 int udpcksum = 1; |
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int udpcksum = 0; /* XXX */ |
int udpcksum = 0; /* XXX */ |
#endif |
#endif |
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struct sockaddr_in udp_in = { sizeof(udp_in), AF_INET }; |
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struct inpcb *udp_last_inpcb = &udb; |
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static void udp_detach __P((struct inpcb *)); |
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static void udp_notify __P((struct inpcb *, int)); |
static void udp_notify __P((struct inpcb *, int)); |
static struct mbuf *udp_saveopt __P((caddr_t, int, int)); |
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#ifndef UDBHASHSIZE |
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#define UDBHASHSIZE 128 |
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#endif |
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int udbhashsize = UDBHASHSIZE; |
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void |
void |
udp_init() |
udp_init() |
{ |
{ |
udb.inp_next = udb.inp_prev = &udb; |
|
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in_pcbinit(&udbtable, udbhashsize, udbhashsize); |
} |
} |
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void |
void |
udp_input(m, iphlen) |
#if __STDC__ |
register struct mbuf *m; |
udp_input(struct mbuf *m, ...) |
int iphlen; |
#else |
|
udp_input(m, va_alist) |
|
struct mbuf *m; |
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va_dcl |
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#endif |
{ |
{ |
register struct ip *ip; |
register struct ip *ip; |
register struct udphdr *uh; |
register struct udphdr *uh; |
Line 88 udp_input(m, iphlen) |
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Line 104 udp_input(m, iphlen) |
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struct mbuf *opts = 0; |
struct mbuf *opts = 0; |
int len; |
int len; |
struct ip save_ip; |
struct ip save_ip; |
|
int iphlen; |
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va_list ap; |
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struct sockaddr_in udpsrc; |
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va_start(ap, m); |
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iphlen = va_arg(ap, int); |
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va_end(ap); |
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udpstat.udps_ipackets++; |
udpstat.udps_ipackets++; |
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Line 119 udp_input(m, iphlen) |
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Line 142 udp_input(m, iphlen) |
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* Make mbuf data length reflect UDP length. |
* Make mbuf data length reflect UDP length. |
* If not enough data to reflect UDP length, drop. |
* If not enough data to reflect UDP length, drop. |
*/ |
*/ |
len = ntohs((u_short)uh->uh_ulen); |
len = ntohs((u_int16_t)uh->uh_ulen); |
if (ip->ip_len != len) { |
if (ip->ip_len != len) { |
if (len > ip->ip_len) { |
if (len > ip->ip_len) { |
udpstat.udps_badlen++; |
udpstat.udps_badlen++; |
Line 138 udp_input(m, iphlen) |
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Line 161 udp_input(m, iphlen) |
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* Checksum extended UDP header and data. |
* Checksum extended UDP header and data. |
*/ |
*/ |
if (uh->uh_sum) { |
if (uh->uh_sum) { |
((struct ipovly *)ip)->ih_next = 0; |
bzero(((struct ipovly *)ip)->ih_x1, |
((struct ipovly *)ip)->ih_prev = 0; |
sizeof ((struct ipovly *)ip)->ih_x1); |
((struct ipovly *)ip)->ih_x1 = 0; |
|
((struct ipovly *)ip)->ih_len = uh->uh_ulen; |
((struct ipovly *)ip)->ih_len = uh->uh_ulen; |
if (uh->uh_sum = in_cksum(m, len + sizeof (struct ip))) { |
if ((uh->uh_sum = in_cksum(m, len + sizeof (struct ip))) != 0) { |
udpstat.udps_badsum++; |
udpstat.udps_badsum++; |
m_freem(m); |
m_freem(m); |
return; |
return; |
} |
} |
} |
} |
|
|
if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) || |
if (IN_MULTICAST(ip->ip_dst.s_addr) || |
in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) { |
in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) { |
struct socket *last; |
struct inpcb *last; |
/* |
/* |
* Deliver a multicast or broadcast datagram to *all* sockets |
* Deliver a multicast or broadcast datagram to *all* sockets |
* for which the local and remote addresses and ports match |
* for which the local and remote addresses and ports match |
Line 171 udp_input(m, iphlen) |
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Line 193 udp_input(m, iphlen) |
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/* |
/* |
* Construct sockaddr format source address. |
* Construct sockaddr format source address. |
*/ |
*/ |
udp_in.sin_port = uh->uh_sport; |
udpsrc.sin_family = AF_INET; |
udp_in.sin_addr = ip->ip_src; |
udpsrc.sin_len = sizeof(struct sockaddr_in); |
|
udpsrc.sin_addr = ip->ip_src; |
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udpsrc.sin_port = uh->uh_sport; |
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bzero((caddr_t)udpsrc.sin_zero, sizeof(udpsrc.sin_zero)); |
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m->m_len -= sizeof (struct udpiphdr); |
m->m_len -= sizeof (struct udpiphdr); |
m->m_data += sizeof (struct udpiphdr); |
m->m_data += sizeof (struct udpiphdr); |
/* |
/* |
Line 180 udp_input(m, iphlen) |
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Line 206 udp_input(m, iphlen) |
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* (Algorithm copied from raw_intr().) |
* (Algorithm copied from raw_intr().) |
*/ |
*/ |
last = NULL; |
last = NULL; |
for (inp = udb.inp_next; inp != &udb; inp = inp->inp_next) { |
for (inp = udbtable.inpt_queue.cqh_first; |
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inp != (struct inpcb *)&udbtable.inpt_queue; |
|
inp = inp->inp_queue.cqe_next) { |
if (inp->inp_lport != uh->uh_dport) |
if (inp->inp_lport != uh->uh_dport) |
continue; |
continue; |
if (inp->inp_laddr.s_addr != INADDR_ANY) { |
if (!in_nullhost(inp->inp_laddr)) { |
if (inp->inp_laddr.s_addr != |
if (!in_hosteq(inp->inp_laddr, ip->ip_dst)) |
ip->ip_dst.s_addr) |
|
continue; |
continue; |
} |
} |
if (inp->inp_faddr.s_addr != INADDR_ANY) { |
if (!in_nullhost(inp->inp_faddr)) { |
if (inp->inp_faddr.s_addr != |
if (!in_hosteq(inp->inp_faddr, ip->ip_src) || |
ip->ip_src.s_addr || |
|
inp->inp_fport != uh->uh_sport) |
inp->inp_fport != uh->uh_sport) |
continue; |
continue; |
} |
} |
Line 199 udp_input(m, iphlen) |
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Line 225 udp_input(m, iphlen) |
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struct mbuf *n; |
struct mbuf *n; |
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|
if ((n = m_copy(m, 0, M_COPYALL)) != NULL) { |
if ((n = m_copy(m, 0, M_COPYALL)) != NULL) { |
if (sbappendaddr(&last->so_rcv, |
if (last->inp_flags & INP_CONTROLOPTS |
(struct sockaddr *)&udp_in, |
|| last->inp_socket->so_options & |
n, (struct mbuf *)0) == 0) { |
SO_TIMESTAMP) { |
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ip_savecontrol(last, &opts, |
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ip, n); |
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} |
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if (sbappendaddr( |
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&last->inp_socket->so_rcv, |
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sintosa(&udpsrc), n, opts) == 0) { |
m_freem(n); |
m_freem(n); |
udpstat.udps_fullsock++; |
if (opts) |
|
m_freem(opts); |
} else |
} else |
sorwakeup(last); |
sorwakeup(last->inp_socket); |
|
opts = 0; |
} |
} |
} |
} |
last = inp->inp_socket; |
last = inp; |
/* |
/* |
* Don't look for additional matches if this one does |
* Don't look for additional matches if this one does |
* not have either the SO_REUSEPORT or SO_REUSEADDR |
* not have either the SO_REUSEPORT or SO_REUSEADDR |
Line 217 udp_input(m, iphlen) |
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Line 251 udp_input(m, iphlen) |
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* port. It * assumes that an application will never |
* port. It * assumes that an application will never |
* clear these options after setting them. |
* clear these options after setting them. |
*/ |
*/ |
if ((last->so_options&(SO_REUSEPORT|SO_REUSEADDR) == 0)) |
if ((last->inp_socket->so_options & |
|
(SO_REUSEPORT|SO_REUSEADDR)) == 0) |
break; |
break; |
} |
} |
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Line 230 udp_input(m, iphlen) |
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Line 265 udp_input(m, iphlen) |
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udpstat.udps_noportbcast++; |
udpstat.udps_noportbcast++; |
goto bad; |
goto bad; |
} |
} |
if (sbappendaddr(&last->so_rcv, (struct sockaddr *)&udp_in, |
if (last->inp_flags & INP_CONTROLOPTS || |
m, (struct mbuf *)0) == 0) { |
last->inp_socket->so_options & SO_TIMESTAMP) |
|
ip_savecontrol(last, &opts, ip, m); |
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if (sbappendaddr(&last->inp_socket->so_rcv, |
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sintosa(&udpsrc), m, opts) == 0) { |
udpstat.udps_fullsock++; |
udpstat.udps_fullsock++; |
goto bad; |
goto bad; |
} |
} |
sorwakeup(last); |
sorwakeup(last->inp_socket); |
return; |
return; |
} |
} |
/* |
/* |
* Locate pcb for datagram. |
* Locate pcb for datagram. |
*/ |
*/ |
inp = udp_last_inpcb; |
inp = in_pcblookup_connect(&udbtable, ip->ip_src, uh->uh_sport, |
if (inp->inp_lport != uh->uh_dport || |
ip->ip_dst, uh->uh_dport); |
inp->inp_fport != uh->uh_sport || |
|
inp->inp_faddr.s_addr != ip->ip_src.s_addr || |
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inp->inp_laddr.s_addr != ip->ip_dst.s_addr) { |
|
inp = in_pcblookup(&udb, ip->ip_src, uh->uh_sport, |
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ip->ip_dst, uh->uh_dport, INPLOOKUP_WILDCARD); |
|
if (inp) |
|
udp_last_inpcb = inp; |
|
udpstat.udpps_pcbcachemiss++; |
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} |
|
if (inp == 0) { |
if (inp == 0) { |
udpstat.udps_noport++; |
++udpstat.udps_pcbhashmiss; |
if (m->m_flags & (M_BCAST | M_MCAST)) { |
inp = in_pcblookup_bind(&udbtable, ip->ip_dst, uh->uh_dport); |
udpstat.udps_noportbcast++; |
if (inp == 0) { |
goto bad; |
udpstat.udps_noport++; |
|
if (m->m_flags & (M_BCAST | M_MCAST)) { |
|
udpstat.udps_noportbcast++; |
|
goto bad; |
|
} |
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*ip = save_ip; |
|
ip->ip_len += iphlen; |
|
#if NIPKDB > 0 |
|
if (checkipkdb(&ip->ip_src, |
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uh->uh_sport, |
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uh->uh_dport, |
|
m, |
|
iphlen + sizeof(struct udphdr), |
|
len - sizeof(struct udphdr))) |
|
/* It was a debugger connect packet, just drop it now */ |
|
goto bad; |
|
#endif |
|
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0); |
|
return; |
} |
} |
*ip = save_ip; |
|
ip->ip_len += iphlen; |
|
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0); |
|
return; |
|
} |
} |
|
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/* |
/* |
* Construct sockaddr format source address. |
* Construct sockaddr format source address. |
* Stuff source address and datagram in user buffer. |
* Stuff source address and datagram in user buffer. |
*/ |
*/ |
udp_in.sin_port = uh->uh_sport; |
udpsrc.sin_family = AF_INET; |
udp_in.sin_addr = ip->ip_src; |
udpsrc.sin_len = sizeof(struct sockaddr_in); |
if (inp->inp_flags & INP_CONTROLOPTS) { |
udpsrc.sin_addr = ip->ip_src; |
struct mbuf **mp = &opts; |
udpsrc.sin_port = uh->uh_sport; |
|
bzero((caddr_t)udpsrc.sin_zero, sizeof(udpsrc.sin_zero)); |
if (inp->inp_flags & INP_RECVDSTADDR) { |
|
*mp = udp_saveopt((caddr_t) &ip->ip_dst, |
if (inp->inp_flags & INP_CONTROLOPTS || |
sizeof(struct in_addr), IP_RECVDSTADDR); |
inp->inp_socket->so_options & SO_TIMESTAMP) |
if (*mp) |
ip_savecontrol(inp, &opts, ip, m); |
mp = &(*mp)->m_next; |
|
} |
|
#ifdef notyet |
|
/* options were tossed above */ |
|
if (inp->inp_flags & INP_RECVOPTS) { |
|
*mp = udp_saveopt((caddr_t) opts_deleted_above, |
|
sizeof(struct in_addr), IP_RECVOPTS); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
/* ip_srcroute doesn't do what we want here, need to fix */ |
|
if (inp->inp_flags & INP_RECVRETOPTS) { |
|
*mp = udp_saveopt((caddr_t) ip_srcroute(), |
|
sizeof(struct in_addr), IP_RECVRETOPTS); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
#endif |
|
} |
|
iphlen += sizeof(struct udphdr); |
iphlen += sizeof(struct udphdr); |
m->m_len -= iphlen; |
m->m_len -= iphlen; |
m->m_pkthdr.len -= iphlen; |
m->m_pkthdr.len -= iphlen; |
m->m_data += iphlen; |
m->m_data += iphlen; |
if (sbappendaddr(&inp->inp_socket->so_rcv, (struct sockaddr *)&udp_in, |
if (sbappendaddr(&inp->inp_socket->so_rcv, sintosa(&udpsrc), m, |
m, opts) == 0) { |
opts) == 0) { |
udpstat.udps_fullsock++; |
udpstat.udps_fullsock++; |
goto bad; |
goto bad; |
} |
} |
|
|
} |
} |
|
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/* |
/* |
* Create a "control" mbuf containing the specified data |
|
* with the specified type for presentation with a datagram. |
|
*/ |
|
struct mbuf * |
|
udp_saveopt(p, size, type) |
|
caddr_t p; |
|
register int size; |
|
int type; |
|
{ |
|
register struct cmsghdr *cp; |
|
struct mbuf *m; |
|
|
|
if ((m = m_get(M_DONTWAIT, MT_CONTROL)) == NULL) |
|
return ((struct mbuf *) NULL); |
|
cp = (struct cmsghdr *) mtod(m, struct cmsghdr *); |
|
bcopy(p, CMSG_DATA(cp), size); |
|
size += sizeof(*cp); |
|
m->m_len = size; |
|
cp->cmsg_len = size; |
|
cp->cmsg_level = IPPROTO_IP; |
|
cp->cmsg_type = type; |
|
return (m); |
|
} |
|
|
|
/* |
|
* Notify a udp user of an asynchronous error; |
* Notify a udp user of an asynchronous error; |
* just wake up so that he can collect error status. |
* just wake up so that he can collect error status. |
*/ |
*/ |
Line 347 udp_notify(inp, errno) |
|
Line 346 udp_notify(inp, errno) |
|
register struct inpcb *inp; |
register struct inpcb *inp; |
int errno; |
int errno; |
{ |
{ |
|
|
inp->inp_socket->so_error = errno; |
inp->inp_socket->so_error = errno; |
sorwakeup(inp->inp_socket); |
sorwakeup(inp->inp_socket); |
sowwakeup(inp->inp_socket); |
sowwakeup(inp->inp_socket); |
} |
} |
|
|
void |
void * |
udp_ctlinput(cmd, sa, ip) |
udp_ctlinput(cmd, sa, v) |
int cmd; |
int cmd; |
struct sockaddr *sa; |
struct sockaddr *sa; |
register struct ip *ip; |
void *v; |
{ |
{ |
|
register struct ip *ip = v; |
register struct udphdr *uh; |
register struct udphdr *uh; |
extern struct in_addr zeroin_addr; |
extern int inetctlerrmap[]; |
extern u_char inetctlerrmap[]; |
void (*notify) __P((struct inpcb *, int)) = udp_notify; |
|
int errno; |
|
|
if (!PRC_IS_REDIRECT(cmd) && |
if ((unsigned)cmd >= PRC_NCMDS) |
((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0)) |
return NULL; |
return; |
errno = inetctlerrmap[cmd]; |
|
if (PRC_IS_REDIRECT(cmd)) |
|
notify = in_rtchange, ip = 0; |
|
else if (cmd == PRC_HOSTDEAD) |
|
ip = 0; |
|
else if (errno == 0) |
|
return NULL; |
if (ip) { |
if (ip) { |
uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2)); |
uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2)); |
in_pcbnotify(&udb, sa, uh->uh_dport, ip->ip_src, uh->uh_sport, |
in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport, |
cmd, udp_notify); |
ip->ip_src, uh->uh_sport, errno, notify); |
} else |
} else |
in_pcbnotify(&udb, sa, 0, zeroin_addr, 0, cmd, udp_notify); |
in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno, |
|
notify); |
|
return NULL; |
} |
} |
|
|
int |
int |
udp_output(inp, m, addr, control) |
#if __STDC__ |
register struct inpcb *inp; |
udp_output(struct mbuf *m, ...) |
register struct mbuf *m; |
#else |
struct mbuf *addr, *control; |
udp_output(m, va_alist) |
|
struct mbuf *m; |
|
va_dcl |
|
#endif |
{ |
{ |
|
register struct inpcb *inp; |
register struct udpiphdr *ui; |
register struct udpiphdr *ui; |
register int len = m->m_pkthdr.len; |
register int len = m->m_pkthdr.len; |
struct in_addr laddr; |
int error = 0; |
int s, error = 0; |
va_list ap; |
|
|
if (control) |
va_start(ap, m); |
m_freem(control); /* XXX */ |
inp = va_arg(ap, struct inpcb *); |
|
va_end(ap); |
|
|
if (addr) { |
|
laddr = inp->inp_laddr; |
|
if (inp->inp_faddr.s_addr != INADDR_ANY) { |
|
error = EISCONN; |
|
goto release; |
|
} |
|
/* |
|
* Must block input while temporarily connected. |
|
*/ |
|
s = splnet(); |
|
error = in_pcbconnect(inp, addr); |
|
if (error) { |
|
splx(s); |
|
goto release; |
|
} |
|
} else { |
|
if (inp->inp_faddr.s_addr == INADDR_ANY) { |
|
error = ENOTCONN; |
|
goto release; |
|
} |
|
} |
|
/* |
/* |
* Calculate data length and get a mbuf |
* Calculate data length and get a mbuf |
* for UDP and IP headers. |
* for UDP and IP headers. |
Line 419 udp_output(inp, m, addr, control) |
|
Line 413 udp_output(inp, m, addr, control) |
|
} |
} |
|
|
/* |
/* |
|
* Compute the packet length of the IP header, and |
|
* punt if the length looks bogus. |
|
*/ |
|
if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) { |
|
error = EMSGSIZE; |
|
goto release; |
|
} |
|
|
|
/* |
* Fill in mbuf with extended UDP header |
* Fill in mbuf with extended UDP header |
* and addresses and length put into network format. |
* and addresses and length put into network format. |
*/ |
*/ |
ui = mtod(m, struct udpiphdr *); |
ui = mtod(m, struct udpiphdr *); |
ui->ui_next = ui->ui_prev = 0; |
bzero(ui->ui_x1, sizeof ui->ui_x1); |
ui->ui_x1 = 0; |
|
ui->ui_pr = IPPROTO_UDP; |
ui->ui_pr = IPPROTO_UDP; |
ui->ui_len = htons((u_short)len + sizeof (struct udphdr)); |
ui->ui_len = htons((u_int16_t)len + sizeof (struct udphdr)); |
ui->ui_src = inp->inp_laddr; |
ui->ui_src = inp->inp_laddr; |
ui->ui_dst = inp->inp_faddr; |
ui->ui_dst = inp->inp_faddr; |
ui->ui_sport = inp->inp_lport; |
ui->ui_sport = inp->inp_lport; |
Line 445 udp_output(inp, m, addr, control) |
|
Line 447 udp_output(inp, m, addr, control) |
|
((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ |
((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ |
((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ |
((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ |
udpstat.udps_opackets++; |
udpstat.udps_opackets++; |
error = ip_output(m, inp->inp_options, &inp->inp_route, |
return (ip_output(m, inp->inp_options, &inp->inp_route, |
inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST), |
inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST), |
inp->inp_moptions); |
inp->inp_moptions)); |
|
|
if (addr) { |
|
in_pcbdisconnect(inp); |
|
inp->inp_laddr = laddr; |
|
splx(s); |
|
} |
|
return (error); |
|
|
|
release: |
release: |
m_freem(m); |
m_freem(m); |
Line 467 u_long udp_recvspace = 40 * (1024 + size |
|
Line 462 u_long udp_recvspace = 40 * (1024 + size |
|
|
|
/*ARGSUSED*/ |
/*ARGSUSED*/ |
int |
int |
udp_usrreq(so, req, m, addr, control) |
udp_usrreq(so, req, m, nam, control, p) |
struct socket *so; |
struct socket *so; |
int req; |
int req; |
struct mbuf *m, *addr, *control; |
struct mbuf *m, *nam, *control; |
|
struct proc *p; |
{ |
{ |
struct inpcb *inp = sotoinpcb(so); |
register struct inpcb *inp; |
int error = 0; |
|
int s; |
int s; |
|
register int error = 0; |
|
|
if (req == PRU_CONTROL) |
if (req == PRU_CONTROL) |
return (in_control(so, (u_long)m, (caddr_t)addr, |
return (in_control(so, (long)m, (caddr_t)nam, |
(struct ifnet *)control)); |
(struct ifnet *)control, p)); |
if (inp == NULL && req != PRU_ATTACH) { |
|
|
s = splsoftnet(); |
|
inp = sotoinpcb(so); |
|
#ifdef DIAGNOSTIC |
|
if (req != PRU_SEND && req != PRU_SENDOOB && control) |
|
panic("udp_usrreq: unexpected control mbuf"); |
|
#endif |
|
if (inp == 0 && req != PRU_ATTACH) { |
error = EINVAL; |
error = EINVAL; |
goto release; |
goto release; |
} |
} |
|
|
/* |
/* |
* Note: need to block udp_input while changing |
* Note: need to block udp_input while changing |
* the udp pcb queue and/or pcb addresses. |
* the udp pcb queue and/or pcb addresses. |
Line 490 udp_usrreq(so, req, m, addr, control) |
|
Line 494 udp_usrreq(so, req, m, addr, control) |
|
switch (req) { |
switch (req) { |
|
|
case PRU_ATTACH: |
case PRU_ATTACH: |
if (inp != NULL) { |
if (inp != 0) { |
error = EINVAL; |
error = EISCONN; |
break; |
break; |
} |
} |
s = splnet(); |
if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { |
error = in_pcballoc(so, &udb); |
error = soreserve(so, udp_sendspace, udp_recvspace); |
splx(s); |
if (error) |
if (error) |
break; |
break; |
} |
error = soreserve(so, udp_sendspace, udp_recvspace); |
error = in_pcballoc(so, &udbtable); |
if (error) |
if (error) |
break; |
break; |
((struct inpcb *) so->so_pcb)->inp_ip.ip_ttl = ip_defttl; |
inp = sotoinpcb(so); |
|
inp->inp_ip.ip_ttl = ip_defttl; |
break; |
break; |
|
|
case PRU_DETACH: |
case PRU_DETACH: |
udp_detach(inp); |
in_pcbdetach(inp); |
break; |
break; |
|
|
case PRU_BIND: |
case PRU_BIND: |
s = splnet(); |
error = in_pcbbind(inp, nam, p); |
error = in_pcbbind(inp, addr); |
|
splx(s); |
|
break; |
break; |
|
|
case PRU_LISTEN: |
case PRU_LISTEN: |
Line 520 udp_usrreq(so, req, m, addr, control) |
|
Line 523 udp_usrreq(so, req, m, addr, control) |
|
break; |
break; |
|
|
case PRU_CONNECT: |
case PRU_CONNECT: |
if (inp->inp_faddr.s_addr != INADDR_ANY) { |
error = in_pcbconnect(inp, nam); |
error = EISCONN; |
if (error) |
break; |
break; |
} |
soisconnected(so); |
s = splnet(); |
|
error = in_pcbconnect(inp, addr); |
|
splx(s); |
|
if (error == 0) |
|
soisconnected(so); |
|
break; |
break; |
|
|
case PRU_CONNECT2: |
case PRU_CONNECT2: |
error = EOPNOTSUPP; |
error = EOPNOTSUPP; |
break; |
break; |
|
|
case PRU_ACCEPT: |
|
error = EOPNOTSUPP; |
|
break; |
|
|
|
case PRU_DISCONNECT: |
case PRU_DISCONNECT: |
if (inp->inp_faddr.s_addr == INADDR_ANY) { |
/*soisdisconnected(so);*/ |
error = ENOTCONN; |
so->so_state &= ~SS_ISCONNECTED; /* XXX */ |
break; |
|
} |
|
s = splnet(); |
|
in_pcbdisconnect(inp); |
in_pcbdisconnect(inp); |
inp->inp_laddr.s_addr = INADDR_ANY; |
inp->inp_laddr = zeroin_addr; /* XXX */ |
splx(s); |
in_pcbstate(inp, INP_BOUND); /* XXX */ |
so->so_state &= ~SS_ISCONNECTED; /* XXX */ |
|
break; |
break; |
|
|
case PRU_SHUTDOWN: |
case PRU_SHUTDOWN: |
socantsendmore(so); |
socantsendmore(so); |
break; |
break; |
|
|
case PRU_SEND: |
case PRU_RCVD: |
return (udp_output(inp, m, addr, control)); |
error = EOPNOTSUPP; |
|
|
case PRU_ABORT: |
|
soisdisconnected(so); |
|
udp_detach(inp); |
|
break; |
break; |
|
|
case PRU_SOCKADDR: |
case PRU_SEND: |
in_setsockaddr(inp, addr); |
if (control && control->m_len) { |
break; |
m_freem(control); |
|
m_freem(m); |
|
error = EINVAL; |
|
break; |
|
} |
|
{ |
|
struct in_addr laddr; /* XXX */ |
|
|
case PRU_PEERADDR: |
if (nam) { |
in_setpeeraddr(inp, addr); |
laddr = inp->inp_laddr; /* XXX */ |
|
if ((so->so_state & SS_ISCONNECTED) != 0) { |
|
error = EISCONN; |
|
goto die; |
|
} |
|
error = in_pcbconnect(inp, nam); |
|
if (error) { |
|
die: |
|
m_freem(m); |
|
break; |
|
} |
|
} else { |
|
if ((so->so_state & SS_ISCONNECTED) == 0) { |
|
error = ENOTCONN; |
|
goto die; |
|
} |
|
} |
|
error = udp_output(m, inp); |
|
if (nam) { |
|
in_pcbdisconnect(inp); |
|
inp->inp_laddr = laddr; /* XXX */ |
|
in_pcbstate(inp, INP_BOUND); /* XXX */ |
|
} |
|
} |
break; |
break; |
|
|
case PRU_SENSE: |
case PRU_SENSE: |
/* |
/* |
* stat: don't bother with a blocksize. |
* stat: don't bother with a blocksize. |
*/ |
*/ |
|
splx(s); |
return (0); |
return (0); |
|
|
|
case PRU_RCVOOB: |
|
error = EOPNOTSUPP; |
|
break; |
|
|
case PRU_SENDOOB: |
case PRU_SENDOOB: |
case PRU_FASTTIMO: |
m_freem(control); |
case PRU_SLOWTIMO: |
m_freem(m); |
case PRU_PROTORCV: |
|
case PRU_PROTOSEND: |
|
error = EOPNOTSUPP; |
error = EOPNOTSUPP; |
break; |
break; |
|
|
case PRU_RCVD: |
case PRU_SOCKADDR: |
case PRU_RCVOOB: |
in_setsockaddr(inp, nam); |
return (EOPNOTSUPP); /* do not free mbuf's */ |
break; |
|
|
|
case PRU_PEERADDR: |
|
in_setpeeraddr(inp, nam); |
|
break; |
|
|
default: |
default: |
panic("udp_usrreq"); |
panic("udp_usrreq"); |
} |
} |
|
|
release: |
release: |
if (control) { |
|
printf("udp control data unexpectedly retained\n"); |
|
m_freem(control); |
|
} |
|
if (m) |
|
m_freem(m); |
|
return (error); |
|
} |
|
|
|
static void |
|
udp_detach(inp) |
|
struct inpcb *inp; |
|
{ |
|
int s = splnet(); |
|
|
|
if (inp == udp_last_inpcb) |
|
udp_last_inpcb = &udb; |
|
in_pcbdetach(inp); |
|
splx(s); |
splx(s); |
|
return (error); |
} |
} |
|
|
/* |
/* |
* Sysctl for udp variables. |
* Sysctl for udp variables. |
*/ |
*/ |
|
int |
udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
int *name; |
int *name; |
u_int namelen; |
u_int namelen; |