Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

===================================================================
RCS file: /ftp/cvs/cvsroot/src/sys/netinet/ip_input.c,v
rcsdiff: /ftp/cvs/cvsroot/src/sys/netinet/ip_input.c,v: warning: Unknown phrases like `commitid ...;' are present.
retrieving revision 1.218.2.6
retrieving revision 1.251
diff -u -p -r1.218.2.6 -r1.251
--- src/sys/netinet/ip_input.c	2007/11/15 11:45:07	1.218.2.6
+++ src/sys/netinet/ip_input.c	2007/08/10 22:46:16	1.251
@@ -1,4 +1,4 @@
-/*	$NetBSD: ip_input.c,v 1.218.2.6 2007/11/15 11:45:07 yamt Exp $	*/
+/*	$NetBSD: ip_input.c,v 1.251 2007/08/10 22:46:16 dyoung Exp $	*/
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -98,7 +98,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.218.2.6 2007/11/15 11:45:07 yamt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.251 2007/08/10 22:46:16 dyoung Exp $");
 
 #include "opt_inet.h"
 #include "opt_gateway.h"
@@ -469,6 +469,7 @@ ipintr(void)
 		splx(s);
 		if (m == 0)
 			return;
+		MCLAIM(m, &ip_rx_mowner);
 		ip_input(m);
 	}
 }
@@ -1012,6 +1013,7 @@ found:
 			/* XXX error stat??? */
 			error = EINVAL;
 DPRINTF(("ip_input: no SP, packet discarded\n"));/*XXX*/
+			goto bad;
 		}
 		splx(s);
 		if (error)
@@ -1775,6 +1777,32 @@ ip_srcroute(void)
 	return (m);
 }
 
+/*
+ * Strip out IP options, at higher
+ * level protocol in the kernel.
+ * Second argument is buffer to which options
+ * will be moved, and return value is their length.
+ * XXX should be deleted; last arg currently ignored.
+ */
+void
+ip_stripoptions(struct mbuf *m, struct mbuf *mopt)
+{
+	int i;
+	struct ip *ip = mtod(m, struct ip *);
+	void *opts;
+	int olen;
+
+	olen = (ip->ip_hl << 2) - sizeof (struct ip);
+	opts = (void *)(ip + 1);
+	i = m->m_len - (sizeof (struct ip) + olen);
+	memmove(opts, (char *)opts + olen, (unsigned)i);
+	m->m_len -= olen;
+	if (m->m_flags & M_PKTHDR)
+		m->m_pkthdr.len -= olen;
+	ip->ip_len = htons(ntohs(ip->ip_len) - olen);
+	ip->ip_hl = sizeof (struct ip) >> 2;
+}
+
 const int inetctlerrmap[PRC_NCMDS] = {
 	0,		0,		0,		0,
 	0,		EMSGSIZE,	EHOSTDOWN,	EHOSTUNREACH,
@@ -2051,11 +2079,8 @@ ip_savecontrol(struct inpcb *inp, struct
 	if (inp->inp_flags & INP_RECVIF) {
 		struct sockaddr_dl sdl;
 
-		sockaddr_dl_init(&sdl, sizeof(sdl),
-		    (m->m_pkthdr.rcvif != NULL)
-		        ?  m->m_pkthdr.rcvif->if_index
-			: 0,
-			0, NULL, 0, NULL, 0);
+		sockaddr_dl_init(&sdl, (m->m_pkthdr.rcvif != NULL) ?
+		    m->m_pkthdr.rcvif->if_index : 0, 0, NULL, 0, NULL, 0);
 		*mp = sbcreatecontrol(&sdl, sdl.sdl_len, IP_RECVIF, IPPROTO_IP);
 		if (*mp)
 			mp = &(*mp)->m_next;