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Latest commit 9643d9c Apr 29, 2016 Aurimas Liutikas committed with Gerrit Code Review Merge changes I02a085bf,Id5433d1d
* changes:
  Add #ifndef checks for macros
  Clean up version test
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ChmodBPF Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
SUNOS4 Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
Win32 Upgrade to libpcap 1.7.4. Oct 20, 2015
bpf/net Upgrade to libpcap 1.7.4. Oct 20, 2015
lbl Upgrade to libpcap 1.7.4. Oct 20, 2015
missing Upgrade to libpcap 1.7.4. Oct 20, 2015
msdos Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap Add #ifndef checks for macros Apr 29, 2016
tests Upgrade to libpcap 1.7.4. Oct 20, 2015
.gitignore Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
.travis.yml Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
Android.mk Add #ifndef checks for macros Apr 29, 2016
CHANGES Upgrade to libpcap 1.7.4. Oct 20, 2015
CREDITS Upgrade to libpcap 1.7.4. Oct 20, 2015
CleanSpec.mk Get libpcap 1.5.2+ to compile on Android. Feb 12, 2014
INSTALL.txt Upgrade to libpcap 1.7.4. Oct 20, 2015
LICENSE Upgrade to libpcap 1.7.4. Oct 20, 2015
MODULE_LICENSE_BSD Restore the MODULE_LICENSE_BSD and NOTICE files. Oct 22, 2015
Makefile-devel-adds Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
Makefile.in Upgrade to libpcap 1.7.4. Oct 20, 2015
NOTICE Restore the MODULE_LICENSE_BSD and NOTICE files. Oct 22, 2015
README Upgrade to libpcap 1.7.4. Oct 20, 2015
README.Win32 Upgrade to libpcap 1.7.4. Oct 20, 2015
README.aix Upgrade to libpcap 1.7.4. Oct 20, 2015
README.dag Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
README.hpux Upgrade to libpcap 1.7.4. Oct 20, 2015
README.linux Upgrade to libpcap 1.7.4. Oct 20, 2015
README.macosx Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
README.septel Upgrade to libpcap 1.7.4. Oct 20, 2015
README.sita Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
README.tru64 Upgrade to libpcap 1.7.4. Oct 20, 2015
TODO Upgrade to libpcap 1.7.4. Oct 20, 2015
VERSION Upgrade to libpcap 1.7.4. Oct 20, 2015
aclocal.m4 Upgrade to libpcap 1.7.4. Oct 20, 2015
arcnet.h Upgrade to libpcap 1.7.4. Oct 20, 2015
atmuni31.h Upgrade to libpcap 1.7.4. Oct 20, 2015
bpf_dump.c Upgrade to libpcap 1.7.4. Oct 20, 2015
bpf_image.c Upgrade to libpcap 1.7.4. Oct 20, 2015
chmod_bpf Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
config.guess Upgrade to libpcap 1.7.4. Oct 20, 2015
config.h Upgrade to libpcap 1.7.4. Oct 20, 2015
config.h.in Upgrade to libpcap 1.7.4. Oct 20, 2015
config.sub Upgrade to libpcap 1.7.4. Oct 20, 2015
configure Upgrade to libpcap 1.7.4. Oct 20, 2015
configure.in Upgrade to libpcap 1.7.4. Oct 20, 2015
dlpisubs.c Upgrade to libpcap 1.7.4. Oct 20, 2015
dlpisubs.h Upgrade to libpcap 1.7.4. Oct 20, 2015
etherent.c Upgrade to libpcap 1.7.4. Oct 20, 2015
ethertype.h Upgrade to libpcap 1.7.4. Oct 20, 2015
fad-getad.c Upgrade to libpcap 1.7.4. Oct 20, 2015
fad-gifc.c Upgrade to libpcap 1.7.4. Oct 20, 2015
fad-glifc.c Upgrade to libpcap 1.7.4. Oct 20, 2015
fad-null.c Upgrade to libpcap 1.7.4. Oct 20, 2015
fad-sita.c Upgrade to libpcap 1.7.4. Oct 20, 2015
fad-win32.c Upgrade to libpcap 1.7.4. Oct 20, 2015
gencode.c Upgrade to libpcap 1.7.4. Oct 20, 2015
gencode.h Upgrade to libpcap 1.7.4. Oct 20, 2015
grammar.c Upgrade to libpcap 1.7.4. Oct 20, 2015
grammar.y Upgrade to libpcap 1.7.4. Oct 20, 2015
ieee80211.h Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
inet.c Upgrade to libpcap 1.7.4. Oct 20, 2015
install-sh Upgrade to libpcap 1.7.4. Oct 20, 2015
llc.h Upgrade to libpcap 1.7.4. Oct 20, 2015
mkdep Upgrade to libpcap 1.7.4. Oct 20, 2015
nametoaddr.c Upgrade to libpcap 1.7.4. Oct 20, 2015
nlpid.h Upgrade to libpcap 1.7.4. Oct 20, 2015
optimize.c Upgrade to libpcap 1.7.4. Oct 20, 2015
org.tcpdump.chmod_bpf.plist Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap-bpf.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-bpf.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-bt-linux.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-bt-linux.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-bt-monitor-linux.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-bt-monitor-linux.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-can-linux.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-can-linux.h Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap-canusb-linux.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-canusb-linux.h Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap-common.c Clean up version test Apr 29, 2016
pcap-common.h Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap-config.1 Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-config.in Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap-dag.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-dag.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-dbus.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-dbus.h Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap-dlpi.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-dos.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-dos.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-enet.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-filter.manmisc.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-int.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-libdlpi.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-linktype.manmisc.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-linux.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-namedb.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-netfilter-linux-android.c Expose nflog_send_config_cmd() for netd. Jan 14, 2015
pcap-netfilter-linux-android.h Expose nflog_send_config_cmd() for netd. Jan 14, 2015
pcap-netfilter-linux.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-netfilter-linux.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-nit.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-null.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-pf.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-savefile.manfile.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-septel.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-septel.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-sita.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-sita.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-sita.html Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap-snf.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-snf.h Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap-snit.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-snoop.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-stdinc.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-tstamp.manmisc.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-usb-linux.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-usb-linux.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap-win32.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap.c Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap.h Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_activate.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_breakloop.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_can_set_rfmon.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_close.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_compile.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_create.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_datalink.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_datalink_name_to_val.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_datalink_val_to_name.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_dump.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_dump_close.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_dump_file.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_dump_flush.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_dump_ftell.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_dump_open.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_file.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_fileno.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_findalldevs.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_freecode.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_get_selectable_fd.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_get_tstamp_precision.3pcap.in Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap_geterr.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_inject.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_is_swapped.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_lib_version.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_list_datalinks.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_list_tstamp_types.3pcap.in Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap_lookupdev.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_lookupnet.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_loop.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_major_version.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_next_ex.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_offline_filter.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_open_dead.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_open_live.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_open_offline.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_set_buffer_size.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_set_datalink.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_set_immediate_mode.3pcap Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
pcap_set_promisc.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_set_rfmon.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_set_snaplen.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_set_timeout.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_set_tstamp_precision.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_set_tstamp_type.3pcap.in Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_setdirection.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_setfilter.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_setnonblock.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_snapshot.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_stats.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_statustostr.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_strerror.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_tstamp_type_name_to_val.3pcap Upgrade to libpcap 1.7.4. Oct 20, 2015
pcap_tstamp_type_val_to_name.3pcap Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
ppp.h Upgrade to libpcap 1.7.4. Oct 20, 2015
runlex.sh Upgrade to libpcap 1.7.4. Oct 20, 2015
savefile.c Upgrade to libpcap 1.7.4. Oct 20, 2015
scanner.c Upgrade to libpcap 1.7.4. Oct 20, 2015
scanner.h Upgrade to libpcap 1.7.4. Oct 20, 2015
scanner.l Upgrade to libpcap 1.7.4. Oct 20, 2015
sf-pcap-ng.c Upgrade to libpcap 1.7.4. Oct 20, 2015
sf-pcap-ng.h Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
sf-pcap.c Upgrade to libpcap 1.7.4. Oct 20, 2015
sf-pcap.h Merge remote-tracking branch 'goog/tcpdump' Feb 12, 2014
sunatmpos.h Upgrade to libpcap 1.7.4. Oct 20, 2015
tokdefs.h Upgrade to libpcap 1.7.4. Oct 20, 2015
version.c Upgrade to libpcap 1.7.4. Oct 20, 2015
version.h Upgrade to libpcap 1.7.4. Oct 20, 2015

README

LIBPCAP 1.x.y

www.tcpdump.org

Please send inquiries/comments/reports to:
	tcpdump-workers@lists.tcpdump.org

Anonymous Git is available via:
	git clone git://bpf.tcpdump.org/libpcap

Please submit patches by forking the branch on GitHub at

	http://github.com/the-tcpdump-group/libpcap/tree/master

and issuing a pull request.

formerly from 	Lawrence Berkeley National Laboratory
		Network Research Group <libpcap@ee.lbl.gov>
		ftp://ftp.ee.lbl.gov/old/libpcap-0.4a7.tar.Z

This directory contains source code for libpcap, a system-independent
interface for user-level packet capture.  libpcap provides a portable
framework for low-level network monitoring.  Applications include
network statistics collection, security monitoring, network debugging,
etc.  Since almost every system vendor provides a different interface
for packet capture, and since we've developed several tools that
require this functionality, we've created this system-independent API
to ease in porting and to alleviate the need for several
system-dependent packet capture modules in each application.

For some platforms there are README.{system} files that discuss issues
with the OS's interface for packet capture on those platforms, such as
how to enable support for that interface in the OS, if it's not built in
by default.

The libpcap interface supports a filtering mechanism based on the
architecture in the BSD packet filter.  BPF is described in the 1993
Winter Usenix paper ``The BSD Packet Filter: A New Architecture for
User-level Packet Capture''.  A compressed PostScript version can be
found at

	ftp://ftp.ee.lbl.gov/papers/bpf-usenix93.ps.Z

or

	http://www.tcpdump.org/papers/bpf-usenix93.ps.Z

and a gzipped version can be found at

	http://www.tcpdump.org/papers/bpf-usenix93.ps.gz

A PDF version can be found at

	http://www.tcpdump.org/papers/bpf-usenix93.pdf

Although most packet capture interfaces support in-kernel filtering,
libpcap utilizes in-kernel filtering only for the BPF interface.
On systems that don't have BPF, all packets are read into user-space
and the BPF filters are evaluated in the libpcap library, incurring
added overhead (especially, for selective filters).  Ideally, libpcap
would translate BPF filters into a filter program that is compatible
with the underlying kernel subsystem, but this is not yet implemented.

BPF is standard in 4.4BSD, BSD/OS, NetBSD, FreeBSD, OpenBSD, DragonFly
BSD, and Mac OS X; an older, modified and undocumented version is
standard in AIX.  {DEC OSF/1, Digital UNIX, Tru64 UNIX} uses the
packetfilter interface but has been extended to accept BPF filters
(which libpcap utilizes).  Also, you can add BPF filter support to
Ultrix using the kernel source and/or object patches available in:

	http://www.tcpdump.org/other/bpfext42.tar.Z

Linux, in the 2.2 kernel and later kernels, has a "Socket Filter"
mechanism that accepts BPF filters; see the README.linux file for
information on configuring that option.

Note to Linux distributions and *BSD systems that include libpcap:

There's now a rule to make a shared library, which should work on Linux
and *BSD, among other platforms.

It sets the soname of the library to "libpcap.so.1"; this is what it
should be, *NOT* libpcap.so.1.x or libpcap.so.1.x.y or something such as
that.

We've been maintaining binary compatibility between libpcap releases for
quite a while; there's no reason to tie a binary linked with libpcap to
a particular release of libpcap.

Problems, bugs, questions, desirable enhancements, etc. should be sent
to the address "tcpdump-workers@lists.tcpdump.org".  Bugs, support
requests, and feature requests may also be submitted on the GitHub issue
tracker for libpcap at

	https://github.com/the-tcpdump-group/libpcap/issues

Source code contributions, etc. should be sent to the email address
above or submitted by forking the branch on GitHub at

	http://github.com/the-tcpdump-group/libpcap/tree/master

and issuing a pull request.

Current versions can be found at www.tcpdump.org.

 - The TCPdump team
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