From 2b221d20db7583fa8f36d4545554786fcf93ca8e Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 13 Mar 2018 12:24:19 -0700 Subject: doc: remove out of date links and info from packet mmap The packet_mmap documentation had links to no longer existing web sites; replace with other site which has similar example. Support for packet mmap has been in mainline versions of libpcap for several years. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- Documentation/networking/packet_mmap.txt | 22 +++++----------------- 1 file changed, 5 insertions(+), 17 deletions(-) diff --git a/Documentation/networking/packet_mmap.txt b/Documentation/networking/packet_mmap.txt index bf654845556e..999eb41da81d 100644 --- a/Documentation/networking/packet_mmap.txt +++ b/Documentation/networking/packet_mmap.txt @@ -7,15 +7,12 @@ socket interface on 2.4/2.6/3.x kernels. This type of sockets is used for i) capture network traffic with utilities like tcpdump, ii) transmit network traffic, or any other that needs raw access to network interface. -You can find the latest version of this document at: - http://wiki.ipxwarzone.com/index.php5?title=Linux_packet_mmap - Howto can be found at: - http://wiki.gnu-log.net (packet_mmap) + https://sites.google.com/site/packetmmap/ Please send your comments to Ulisses Alonso Camaró - Johann Baudy + Johann Baudy ------------------------------------------------------------------------------- + Why use PACKET_MMAP @@ -51,17 +48,8 @@ From the user standpoint, you should use the higher level libpcap library, which is a de facto standard, portable across nearly all operating systems including Win32. -Said that, at time of this writing, official libpcap 0.8.1 is out and doesn't include -support for PACKET_MMAP, and also probably the libpcap included in your distribution. - -I'm aware of two implementations of PACKET_MMAP in libpcap: - - http://wiki.ipxwarzone.com/ (by Simon Patarin, based on libpcap 0.6.2) - http://public.lanl.gov/cpw/ (by Phil Wood, based on lastest libpcap) - -The rest of this document is intended for people who want to understand -the low level details or want to improve libpcap by including PACKET_MMAP -support. +Packet MMAP support was integrated into libpcap around the time of version 1.3.0; +TPACKET_V3 support was added in version 1.5.0 -------------------------------------------------------------------------------- + How to use mmap() directly to improve capture process @@ -174,7 +162,7 @@ As capture, each frame contains two parts: /* bind socket to eth0 */ bind(this->socket, (struct sockaddr *)&my_addr, sizeof(struct sockaddr_ll)); - A complete tutorial is available at: http://wiki.gnu-log.net/ + A complete tutorial is available at: https://sites.google.com/site/packetmmap/ By default, the user should put data at : frame base + TPACKET_HDRLEN - sizeof(struct sockaddr_ll) -- cgit v1.2.3