add infrastructure to support packet filtering

[ppp.git] / include / pcap-int.h

diff --git a/include/pcap-int.h b/include/pcap-int.h
new file mode 100644 (file)
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