@@ -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 <uaca@i.hate.spam.alumni.uv.es>
- Johann Baudy <johann.baudy@gnu-log.net>
+ 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)
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 <stephen@networkplumber.org> --- Documentation/networking/packet_mmap.txt | 22 +++++----------------- 1 file changed, 5 insertions(+), 17 deletions(-)