add infrastructure to support packet filtering

2 files changed, 121 insertions, 2 deletions

diff --git a/include/linux/if_ppp.h b/include/linux/if_ppp.h
index a03f3f2..e214bbb 100644
--- a/include/linux/if_ppp.h
+++ b/include/linux/if_ppp.h
@@ -1,4 +1,4 @@
-/*	$Id: if_ppp.h,v 1.21 2000/03/27 06:03:36 paulus Exp $	*/
+/*	$Id: if_ppp.h,v 1.22 2000/08/01 01:37:24 paulus Exp $	*/
 
 /*
  * if_ppp.h - Point-to-Point Protocol definitions.
@@ -21,7 +21,7 @@
  */
 
 /*
- *  ==FILEVERSION 20000324==
+ *  ==FILEVERSION 20000724==
  *
  *  NOTE TO MAINTAINERS:
  *     If you modify this file at all, please set the above date.
@@ -130,6 +130,8 @@ struct ifpppcstatsreq {
 #define PPPIOCSCOMPRESS	_IOW('t', 77, struct ppp_option_data)
 #define PPPIOCGNPMODE	_IOWR('t', 76, struct npioctl) /* get NP mode */
 #define PPPIOCSNPMODE	_IOW('t', 75, struct npioctl)  /* set NP mode */
+#define PPPIOCSPASS	_IOW('t', 71, struct sock_fprog) /* set pass filter */
+#define PPPIOCSACTIVE	_IOW('t', 70, struct sock_fprog) /* set active filt */
 #define PPPIOCGDEBUG	_IOR('t', 65, int)	/* Read debug level */
 #define PPPIOCSDEBUG	_IOW('t', 64, int)	/* Set debug level */
 #define PPPIOCGIDLE	_IOR('t', 63, struct ppp_idle) /* get idle time */
diff --git a/include/pcap-int.h b/include/pcap-int.h
new file mode 100644
index 0000000..ba10a95
--- /dev/null
+++ b/include/pcap-int.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1994, 1995, 1996
+ *	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 Computer Systems
+ *	Engineering Group at Lawrence Berkeley Laboratory.
+ * 4. Neither the name of the University nor of the Laboratory 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.
+ *
+ * @(#) $Header: /home/paulus/ppp/samba.org/ppp/include/pcap-int.h,v 1.1 2000/08/01 01:37:24 paulus Exp $ (LBL)
+ */
+
+#ifndef pcap_int_h
+#define pcap_int_h
+
+#include <pcap.h>
+
+/*
+ * Savefile
+ */
+struct pcap_sf {
+	FILE *rfile;
+	int swapped;
+	int version_major;
+	int version_minor;
+	u_char *base;
+};
+
+struct pcap_md {
+	struct pcap_stat stat;
+	/*XXX*/
+	int use_bpf;
+	u_long	TotPkts;	/* can't oflow for 79 hrs on ether */
+	u_long	TotAccepted;	/* count accepted by filter */
+	u_long	TotDrops;	/* count of dropped packets */
+	long	TotMissed;	/* missed by i/f during this run */
+	long	OrigMissed;	/* missed by i/f before this run */
+#ifdef linux
+	int pad;
+	int skip;
+	char *device;
+#endif
+};
+
+struct pcap {
+	int fd;
+	int snapshot;
+	int linktype;
+	int tzoff;		/* timezone offset */
+	int offset;		/* offset for proper alignment */
+
+	struct pcap_sf sf;
+	struct pcap_md md;
+
+	/*
+	 * Read buffer.
+	 */
+	int bufsize;
+	u_char *buffer;
+	u_char *bp;
+	int cc;
+
+	/*
+	 * Place holder for pcap_next().
+	 */
+	u_char *pkt;
+
+	
+	/*
+	 * Placeholder for filter code if bpf not in kernel.
+	 */
+	struct bpf_program fcode;
+
+	char errbuf[PCAP_ERRBUF_SIZE];
+};
+
+int	yylex(void);
+
+#ifndef min
+#define min(a, b) ((a) > (b) ? (b) : (a))
+#endif
+
+/* XXX should these be in pcap.h? */
+int	pcap_offline_read(pcap_t *, int, pcap_handler, u_char *);
+int	pcap_read(pcap_t *, int cnt, pcap_handler, u_char *);
+
+/* Ultrix pads to make everything line up on a nice boundary */
+#if defined(ultrix) || defined(__alpha)
+#define       PCAP_FDDIPAD 3
+#endif
+
+/* XXX */
+extern	int pcap_fddipad;
+#endif