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Diffstat (limited to 'c/src/exec/libnetworking/netinet/udp_usrreq.c')
-rw-r--r--c/src/exec/libnetworking/netinet/udp_usrreq.c613
1 files changed, 0 insertions, 613 deletions
diff --git a/c/src/exec/libnetworking/netinet/udp_usrreq.c b/c/src/exec/libnetworking/netinet/udp_usrreq.c
deleted file mode 100644
index 16c5fce2df..0000000000
--- a/c/src/exec/libnetworking/netinet/udp_usrreq.c
+++ /dev/null
@@ -1,613 +0,0 @@
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
- * $Id$
- */
-
-#include <sys/param.h>
-#include <sys/queue.h>
-#include <sys/systm.h>
-#include <sys/malloc.h>
-#include <sys/mbuf.h>
-#include <sys/protosw.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
-#include <sys/errno.h>
-#include <sys/stat.h>
-#include <sys/kernel.h>
-#include <sys/sysctl.h>
-#include <sys/syslog.h>
-
-#include <net/if.h>
-#include <net/route.h>
-
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/in_pcb.h>
-#include <netinet/in_var.h>
-#include <netinet/ip_var.h>
-#include <netinet/ip_icmp.h>
-#include <netinet/udp.h>
-#include <netinet/udp_var.h>
-
-/*
- * UDP protocol implementation.
- * Per RFC 768, August, 1980.
- */
-#ifndef COMPAT_42
-static int udpcksum = 1;
-#else
-static int udpcksum = 0; /* XXX */
-#endif
-SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum, CTLFLAG_RW,
- &udpcksum, 0, "");
-
-static int log_in_vain = 0;
-SYSCTL_INT(_net_inet_udp, OID_AUTO, log_in_vain, CTLFLAG_RW,
- &log_in_vain, 0, "");
-
-static struct inpcbhead udb; /* from udp_var.h */
-static struct inpcbinfo udbinfo;
-
-#ifndef UDBHASHSIZE
-#define UDBHASHSIZE 64
-#endif
-
- struct udpstat udpstat; /* from udp_var.h */
-SYSCTL_STRUCT(_net_inet_udp, UDPCTL_STATS, stats, CTLFLAG_RD,
- &udpstat, udpstat, "");
-
-static struct sockaddr_in udp_in = { sizeof(udp_in), AF_INET };
-
-static void udp_detach __P((struct inpcb *));
-static int udp_output __P((struct inpcb *, struct mbuf *, struct mbuf *,
- struct mbuf *));
-static void udp_notify __P((struct inpcb *, int));
-
-void
-udp_init()
-{
- LIST_INIT(&udb);
- udbinfo.listhead = &udb;
- udbinfo.hashbase = hashinit(UDBHASHSIZE, M_PCB, &udbinfo.hashmask);
-}
-
-void
-udp_input(m, iphlen)
- register struct mbuf *m;
- int iphlen;
-{
- register struct ip *ip;
- register struct udphdr *uh;
- register struct inpcb *inp;
- struct mbuf *opts = 0;
- int len;
- struct ip save_ip;
-
- udpstat.udps_ipackets++;
-
- /*
- * Strip IP options, if any; should skip this,
- * make available to user, and use on returned packets,
- * but we don't yet have a way to check the checksum
- * with options still present.
- */
- if (iphlen > sizeof (struct ip)) {
- ip_stripoptions(m, (struct mbuf *)0);
- iphlen = sizeof(struct ip);
- }
-
- /*
- * Get IP and UDP header together in first mbuf.
- */
- ip = mtod(m, struct ip *);
- if (m->m_len < iphlen + sizeof(struct udphdr)) {
- if ((m = m_pullup(m, iphlen + sizeof(struct udphdr))) == 0) {
- udpstat.udps_hdrops++;
- return;
- }
- ip = mtod(m, struct ip *);
- }
- uh = (struct udphdr *)((caddr_t)ip + iphlen);
-
- /*
- * Make mbuf data length reflect UDP length.
- * If not enough data to reflect UDP length, drop.
- */
- len = ntohs((u_short)uh->uh_ulen);
- if (ip->ip_len != len) {
- if (len > ip->ip_len || len < sizeof(struct udphdr)) {
- udpstat.udps_badlen++;
- goto bad;
- }
- m_adj(m, len - ip->ip_len);
- /* ip->ip_len = len; */
- }
- /*
- * Save a copy of the IP header in case we want restore it
- * for sending an ICMP error message in response.
- */
- save_ip = *ip;
-
- /*
- * Checksum extended UDP header and data.
- */
- if (uh->uh_sum) {
- ((struct ipovly *)ip)->ih_next = 0;
- ((struct ipovly *)ip)->ih_prev = 0;
- ((struct ipovly *)ip)->ih_x1 = 0;
- ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
- uh->uh_sum = in_cksum(m, len + sizeof (struct ip));
- if (uh->uh_sum) {
- udpstat.udps_badsum++;
- m_freem(m);
- return;
- }
- }
-
- if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) ||
- in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
- struct inpcb *last;
- /*
- * Deliver a multicast or broadcast datagram to *all* sockets
- * for which the local and remote addresses and ports match
- * those of the incoming datagram. This allows more than
- * one process to receive multi/broadcasts on the same port.
- * (This really ought to be done for unicast datagrams as
- * well, but that would cause problems with existing
- * applications that open both address-specific sockets and
- * a wildcard socket listening to the same port -- they would
- * end up receiving duplicates of every unicast datagram.
- * Those applications open the multiple sockets to overcome an
- * inadequacy of the UDP socket interface, but for backwards
- * compatibility we avoid the problem here rather than
- * fixing the interface. Maybe 4.5BSD will remedy this?)
- */
-
- /*
- * Construct sockaddr format source address.
- */
- udp_in.sin_port = uh->uh_sport;
- udp_in.sin_addr = ip->ip_src;
- m->m_len -= sizeof (struct udpiphdr);
- m->m_data += sizeof (struct udpiphdr);
- /*
- * Locate pcb(s) for datagram.
- * (Algorithm copied from raw_intr().)
- */
- last = NULL;
- for (inp = udb.lh_first; inp != NULL; inp = inp->inp_list.le_next) {
- if (inp->inp_lport != uh->uh_dport)
- continue;
- if (inp->inp_laddr.s_addr != INADDR_ANY) {
- if (inp->inp_laddr.s_addr !=
- ip->ip_dst.s_addr)
- continue;
- }
- if (inp->inp_faddr.s_addr != INADDR_ANY) {
- if (inp->inp_faddr.s_addr !=
- ip->ip_src.s_addr ||
- inp->inp_fport != uh->uh_sport)
- continue;
- }
-
- if (last != NULL) {
- struct mbuf *n;
-
- if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
- if (last->inp_flags & INP_CONTROLOPTS
- || last->inp_socket->so_options & SO_TIMESTAMP)
- ip_savecontrol(last, &opts, ip, n);
- if (sbappendaddr(&last->inp_socket->so_rcv,
- (struct sockaddr *)&udp_in,
- n, opts) == 0) {
- m_freem(n);
- if (opts)
- m_freem(opts);
- udpstat.udps_fullsock++;
- } else
- sorwakeup(last->inp_socket);
- opts = 0;
- }
- }
- last = inp;
- /*
- * Don't look for additional matches if this one does
- * not have either the SO_REUSEPORT or SO_REUSEADDR
- * socket options set. This heuristic avoids searching
- * through all pcbs in the common case of a non-shared
- * port. It * assumes that an application will never
- * clear these options after setting them.
- */
- if (((last->inp_socket->so_options&(SO_REUSEPORT|SO_REUSEADDR)) == 0))
- break;
- }
-
- if (last == NULL) {
- /*
- * No matching pcb found; discard datagram.
- * (No need to send an ICMP Port Unreachable
- * for a broadcast or multicast datgram.)
- */
- udpstat.udps_noportbcast++;
- goto bad;
- }
- if (last->inp_flags & INP_CONTROLOPTS
- || last->inp_socket->so_options & SO_TIMESTAMP)
- ip_savecontrol(last, &opts, ip, m);
- if (sbappendaddr(&last->inp_socket->so_rcv,
- (struct sockaddr *)&udp_in,
- m, opts) == 0) {
- udpstat.udps_fullsock++;
- goto bad;
- }
- sorwakeup(last->inp_socket);
- return;
- }
- /*
- * Locate pcb for datagram.
- */
- inp = in_pcblookuphash(&udbinfo, ip->ip_src, uh->uh_sport,
- ip->ip_dst, uh->uh_dport, 1);
- if (inp == NULL) {
- if (log_in_vain) {
- char buf[4*sizeof "123"];
-
- strcpy(buf, inet_ntoa(ip->ip_dst));
- log(LOG_INFO, "Connection attempt to UDP %s:%d"
- " from %s:%d\n",
- buf, ntohs(uh->uh_dport),
- inet_ntoa(ip->ip_src), ntohs(uh->uh_sport));
- }
- udpstat.udps_noport++;
- if (m->m_flags & (M_BCAST | M_MCAST)) {
- udpstat.udps_noportbcast++;
- goto bad;
- }
- *ip = save_ip;
- icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
- return;
- }
-
- /*
- * Construct sockaddr format source address.
- * Stuff source address and datagram in user buffer.
- */
- udp_in.sin_port = uh->uh_sport;
- udp_in.sin_addr = ip->ip_src;
- if (inp->inp_flags & INP_CONTROLOPTS
- || inp->inp_socket->so_options & SO_TIMESTAMP)
- ip_savecontrol(inp, &opts, ip, m);
- iphlen += sizeof(struct udphdr);
- m->m_len -= iphlen;
- m->m_pkthdr.len -= iphlen;
- m->m_data += iphlen;
- if (sbappendaddr(&inp->inp_socket->so_rcv, (struct sockaddr *)&udp_in,
- m, opts) == 0) {
- udpstat.udps_fullsock++;
- goto bad;
- }
- sorwakeup(inp->inp_socket);
- return;
-bad:
- m_freem(m);
- if (opts)
- m_freem(opts);
-}
-
-/*
- * Notify a udp user of an asynchronous error;
- * just wake up so that he can collect error status.
- */
-static void
-udp_notify(inp, errnum)
- register struct inpcb *inp;
- int errnum;
-{
- inp->inp_socket->so_error = errnum;
- sorwakeup(inp->inp_socket);
- sowwakeup(inp->inp_socket);
-}
-
-void
-udp_ctlinput(cmd, sa, vip)
- int cmd;
- struct sockaddr *sa;
- void *vip;
-{
- register struct ip *ip = vip;
- register struct udphdr *uh;
-
- if (!PRC_IS_REDIRECT(cmd) &&
- ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0))
- return;
- if (ip) {
- uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
- in_pcbnotify(&udb, sa, uh->uh_dport, ip->ip_src, uh->uh_sport,
- cmd, udp_notify);
- } else
- in_pcbnotify(&udb, sa, 0, zeroin_addr, 0, cmd, udp_notify);
-}
-
-static int
-udp_output(inp, m, addr, control)
- register struct inpcb *inp;
- register struct mbuf *m;
- struct mbuf *addr, *control;
-{
- register struct udpiphdr *ui;
- register int len = m->m_pkthdr.len;
- struct in_addr laddr;
- int s = 0, error = 0;
-
- if (control)
- m_freem(control); /* XXX */
-
- if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
- error = EMSGSIZE;
- goto release;
- }
-
- 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
- * for UDP and IP headers.
- */
- M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
- if (m == 0) {
- error = ENOBUFS;
- if (addr)
- splx(s);
- goto release;
- }
-
- /*
- * Fill in mbuf with extended UDP header
- * and addresses and length put into network format.
- */
- ui = mtod(m, struct udpiphdr *);
- ui->ui_next = ui->ui_prev = 0;
- ui->ui_x1 = 0;
- ui->ui_pr = IPPROTO_UDP;
- ui->ui_len = htons((u_short)len + sizeof (struct udphdr));
- ui->ui_src = inp->inp_laddr;
- ui->ui_dst = inp->inp_faddr;
- ui->ui_sport = inp->inp_lport;
- ui->ui_dport = inp->inp_fport;
- ui->ui_ulen = ui->ui_len;
-
- /*
- * Stuff checksum and output datagram.
- */
- ui->ui_sum = 0;
- if (udpcksum) {
- if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0)
- ui->ui_sum = 0xffff;
- }
- ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
- ((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */
- ((struct ip *)ui)->ip_tos = inp->inp_ip_tos; /* XXX */
- udpstat.udps_opackets++;
- error = ip_output(m, inp->inp_options, &inp->inp_route,
- inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
- inp->inp_moptions);
-
- if (addr) {
- in_pcbdisconnect(inp);
- inp->inp_laddr = laddr;
- splx(s);
- }
- return (error);
-
-release:
- m_freem(m);
- return (error);
-}
-
-static u_long udp_sendspace = 9216; /* really max datagram size */
- /* 40 1K datagrams */
-SYSCTL_INT(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLFLAG_RW,
- &udp_sendspace, 0, "");
-
-static u_long udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
-SYSCTL_INT(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW,
- &udp_recvspace, 0, "");
-
-/*ARGSUSED*/
-int
-udp_usrreq(so, req, m, addr, control)
- struct socket *so;
- int req;
- struct mbuf *m, *addr, *control;
-{
- struct inpcb *inp = sotoinpcb(so);
- int error = 0;
- int s;
-
- if (req == PRU_CONTROL)
- return (in_control(so, (u_long)m, (caddr_t)addr,
- (struct ifnet *)control));
- if (inp == NULL && req != PRU_ATTACH) {
- error = EINVAL;
- goto release;
- }
- /*
- * Note: need to block udp_input while changing
- * the udp pcb queue and/or pcb addresses.
- */
- switch (req) {
-
- case PRU_ATTACH:
- if (inp != NULL) {
- error = EINVAL;
- break;
- }
- s = splnet();
- error = in_pcballoc(so, &udbinfo);
- splx(s);
- if (error)
- break;
- error = soreserve(so, udp_sendspace, udp_recvspace);
- if (error)
- break;
- ((struct inpcb *) so->so_pcb)->inp_ip_ttl = ip_defttl;
- break;
-
- case PRU_DETACH:
- udp_detach(inp);
- break;
-
- case PRU_BIND:
- s = splnet();
- error = in_pcbbind(inp, addr);
- splx(s);
- break;
-
- case PRU_LISTEN:
- error = EOPNOTSUPP;
- break;
-
- case PRU_CONNECT:
- if (inp->inp_faddr.s_addr != INADDR_ANY) {
- error = EISCONN;
- break;
- }
- s = splnet();
- error = in_pcbconnect(inp, addr);
- splx(s);
- if (error == 0)
- soisconnected(so);
- break;
-
- case PRU_CONNECT2:
- error = EOPNOTSUPP;
- break;
-
- case PRU_ACCEPT:
- error = EOPNOTSUPP;
- break;
-
- case PRU_DISCONNECT:
- if (inp->inp_faddr.s_addr == INADDR_ANY) {
- error = ENOTCONN;
- break;
- }
- s = splnet();
- in_pcbdisconnect(inp);
- inp->inp_laddr.s_addr = INADDR_ANY;
- splx(s);
- so->so_state &= ~SS_ISCONNECTED; /* XXX */
- break;
-
- case PRU_SHUTDOWN:
- socantsendmore(so);
- break;
-
- case PRU_SEND:
- return (udp_output(inp, m, addr, control));
-
- case PRU_ABORT:
- soisdisconnected(so);
- udp_detach(inp);
- break;
-
- case PRU_SOCKADDR:
- in_setsockaddr(inp, addr);
- break;
-
- case PRU_PEERADDR:
- in_setpeeraddr(inp, addr);
- break;
-
- case PRU_SENSE:
- /*
- * stat: don't bother with a blocksize.
- */
- return (0);
-
- case PRU_SENDOOB:
- case PRU_FASTTIMO:
- case PRU_SLOWTIMO:
- case PRU_PROTORCV:
- case PRU_PROTOSEND:
- error = EOPNOTSUPP;
- break;
-
- case PRU_RCVD:
- case PRU_RCVOOB:
- return (EOPNOTSUPP); /* do not free mbuf's */
-
- default:
- panic("udp_usrreq");
- }
-
-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();
-
- in_pcbdetach(inp);
- splx(s);
-}