xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

packet: Kill CONFIG_PACKET_MMAP.

Browse Source 
Early on this was an experimental facility that few
people other than Alexey Kuznetsov played with.

Now it's a pretty fundamental thing and as people add
more features to AF_PACKET sockets this config options
creates ifdef spaghetti.

So kill it off.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2010-02-05 16:29:48 -08:00
parent 7aeef972cc
commit 889b8f964f
3 changed files with 4 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
Documentation/networking/packet_mmap.txt
View File

@@ -2,7 +2,7 @@
+ ABSTRACT
--------------------------------------------------------------------------------
This file documents the CONFIG_PACKET_MMAP option available with the PACKET
This file documents the mmap() facility available with the PACKET
socket interface on 2.4 and 2.6 kernels. This type of sockets is used for
capture network traffic with utilities like tcpdump or any other that needs
raw access to network interface.
@@ -44,7 +44,7 @@ enabled. For transmission, check the MTU (Maximum Transmission Unit) used and
supported by devices of your network.
--------------------------------------------------------------------------------
+ How to use CONFIG_PACKET_MMAP to improve capture process
+ How to use mmap() to improve capture process
--------------------------------------------------------------------------------
From the user standpoint, you should use the higher level libpcap library, which
@@ -64,7 +64,7 @@ the low level details or want to improve libpcap by including PACKET_MMAP
support.
--------------------------------------------------------------------------------
+ How to use CONFIG_PACKET_MMAP directly to improve capture process
+ How to use mmap() directly to improve capture process
--------------------------------------------------------------------------------
From the system calls stand point, the use of PACKET_MMAP involves
@@ -105,7 +105,7 @@ also the mapping of the circular buffer in the user process and
the use of this buffer.
--------------------------------------------------------------------------------
+ How to use CONFIG_PACKET_MMAP directly to improve transmission process
+ How to use mmap() directly to improve transmission process
--------------------------------------------------------------------------------
Transmission process is similar to capture as shown below.