Release FreeBSD 1.0upstream/1.0.0_cvsrelease/1.0.0_cvs

This commit was manufactured to restore the state of the 1.0-RELEASE image.
Releases prior to 5.3-RELEASE are omitting the secure/ and crypto/ subdirs.

1 files changed, 515 insertions, 0 deletions

diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
new file mode 100644
index 000000000000..726988226d78
--- /dev/null
+++ b/sys/netinet/udp_usrreq.c
@@ -0,0 +1,515 @@
+/*
+ * Copyright (c) 1982, 1986, 1988, 1990 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.
+ *
+ *	from: @(#)udp_usrreq.c	7.20 (Berkeley) 4/20/91
+ *	$Id: udp_usrreq.c,v 1.2 1993/10/16 18:26:43 rgrimes Exp $
+ */
+
+#include "param.h"
+#include "malloc.h"
+#include "mbuf.h"
+#include "protosw.h"
+#include "socket.h"
+#include "socketvar.h"
+#include "stat.h"
+
+#include "../net/if.h"
+#include "../net/route.h"
+
+#include "in.h"
+#include "in_systm.h"
+#include "ip.h"
+#include "in_pcb.h"
+#include "ip_var.h"
+#include "ip_icmp.h"
+#include "udp.h"
+#include "udp_var.h"
+
+struct	inpcb *udp_last_inpcb = &udb;
+
+/*
+ * UDP protocol implementation.
+ * Per RFC 768, August, 1980.
+ */
+udp_init()
+{
+
+	udb.inp_next = udb.inp_prev = &udb;
+}
+
+#ifndef	COMPAT_42
+int	udpcksum = 1;
+#else
+int	udpcksum = 0;		/* XXX */
+#endif
+int	udp_ttl = UDP_TTL;
+
+struct	sockaddr_in udp_in = { sizeof(udp_in), AF_INET };
+
+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) {
+			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 (udpcksum && 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;
+		if (uh->uh_sum = in_cksum(m, len + sizeof (struct ip))) {
+			udpstat.udps_badsum++;
+			m_freem(m);
+			return;
+		}
+	}
+
+	/*
+	 * Locate pcb for datagram.
+	 */
+	inp = udp_last_inpcb;
+	if (inp->inp_lport != uh->uh_dport ||
+	    inp->inp_fport != uh->uh_sport ||
+	    inp->inp_faddr.s_addr != ip->ip_src.s_addr ||
+	    inp->inp_laddr.s_addr != ip->ip_dst.s_addr) {
+		inp = in_pcblookup(&udb, ip->ip_src, uh->uh_sport,
+		    ip->ip_dst, uh->uh_dport, INPLOOKUP_WILDCARD);
+		if (inp)
+			udp_last_inpcb = inp;
+		udpstat.udpps_pcbcachemiss++;
+	}
+	if (inp == 0) {
+		/* don't send ICMP response for broadcast packet */
+		udpstat.udps_noport++;
+		if (m->m_flags & M_BCAST) {
+			udpstat.udps_noportbcast++;
+			goto bad;
+		}
+		*ip = save_ip;
+		ip->ip_len += iphlen;
+		icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT);
+		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) {
+		struct mbuf **mp = &opts;
+		struct mbuf *udp_saveopt();
+
+		if (inp->inp_flags & INP_RECVDSTADDR) {
+			*mp = udp_saveopt((caddr_t) &ip->ip_dst,
+			    sizeof(struct in_addr), IP_RECVDSTADDR);
+			if (*mp)
+				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);
+	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);
+}
+
+/*
+ * 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, (caddr_t)(cp + 1), 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;
+ * just wake up so that he can collect error status.
+ */
+udp_notify(inp, errno)
+	register struct inpcb *inp;
+{
+
+	inp->inp_socket->so_error = errno;
+	sorwakeup(inp->inp_socket);
+	sowwakeup(inp->inp_socket);
+}
+
+udp_ctlinput(cmd, sa, ip)
+	int cmd;
+	struct sockaddr *sa;
+	register struct ip *ip;
+{
+	register struct udphdr *uh;
+	extern struct in_addr zeroin_addr;
+	extern u_char inetctlerrmap[];
+
+	if ((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);
+}
+
+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, error = 0;
+
+	if (control)
+		m_freem(control);		/* XXX */
+
+	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_WAIT);
+
+	/*
+	 * 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.ip_ttl;	/* XXX */
+	((struct ip *)ui)->ip_tos = inp->inp_ip.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));
+
+	if (addr) {
+		in_pcbdisconnect(inp);
+		inp->inp_laddr = laddr;
+		splx(s);
+	}
+	return (error);
+
+release:
+	m_freem(m);
+	return (error);
+}
+
+u_long	udp_sendspace = 9216;		/* really max datagram size */
+u_long	udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
+					/* 40 1K datagrams */
+
+/*ARGSUSED*/
+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, (int)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, &udb);
+		splx(s);
+		if (error)
+			break;
+		error = soreserve(so, udp_sendspace, udp_recvspace);
+		if (error)
+			break;
+		((struct inpcb *) so->so_pcb)->inp_ip.ip_ttl = udp_ttl;
+		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);
+}
+
+udp_detach(inp)
+	struct inpcb *inp;
+{
+	int s = splnet();
+
+	if (inp == udp_last_inpcb)
+		udp_last_inpcb = &udb;
+	in_pcbdetach(inp);
+	splx(s);
+}