freebsd-src/contrib/libpcap/pcap-util.h
Joseph Mingrone 6f9cba8f8b
libpcap: Update to 1.10.3
Local changes:

- In contrib/libpcap/pcap/bpf.h, do not include pcap/dlt.h.  Our system
  net/dlt.h is pulled in from net/bpf.h.
- sys/net/dlt.h: Incorporate changes from libpcap 1.10.3.
- lib/libpcap/Makefile: Update for libpcap 1.10.3.

Changelog:	https://git.tcpdump.org/libpcap/blob/95691ebe7564afa3faa5c6ba0dbd17e351be455a:/CHANGES
Reviewed by:	emaste
Obtained from:	https://www.tcpdump.org/release/libpcap-1.10.3.tar.gz
Sponsored by:	The FreeBSD Foundation
2023-03-31 16:02:22 -03:00

56 lines
2.4 KiB
C

/*
* Copyright (c) 1993, 1994, 1995, 1996, 1997
* 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: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* pcap-util.h - common code for various files
*/
/*
* We use the "receiver-makes-right" approach to byte order;
* because time is at a premium when we are writing the file.
* In other words, the pcap_file_header and pcap_pkthdr,
* records are written in host byte order.
* Note that the bytes of packet data are written out in the order in
* which they were received, so multi-byte fields in packets are not
* written in host byte order, they're written in whatever order the
* sending machine put them in.
*
* We also use this for fixing up packet data headers from a remote
* capture, where the server may have a different byte order from the
* client.
*
* ntoh[ls] aren't sufficient because we might need to swap on a big-endian
* machine (if the file was written in little-end order).
*/
#define SWAPLONG(y) \
(((((u_int)(y))&0xff)<<24) | \
((((u_int)(y))&0xff00)<<8) | \
((((u_int)(y))&0xff0000)>>8) | \
((((u_int)(y))>>24)&0xff))
#define SWAPSHORT(y) \
((u_short)(((((u_int)(y))&0xff)<<8) | \
((((u_int)(y))&0xff00)>>8)))
extern void pcap_post_process(int linktype, int swapped,
struct pcap_pkthdr *hdr, u_char *data);
extern void fixup_pcap_pkthdr(int linktype, struct pcap_pkthdr *hdr,
const u_char *data);