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netlink: mmaped netlink: ring setup

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Add support for mmap'ed RX and TX ring setup and teardown based on the
af_packet.c code. The following patches will use this to add the real
mmap'ed receive and transmit functionality.

Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Patrick McHardy 2013-04-17 06:47:01 +00:00 • committed by David S. Miller
commit ccdfcc3985
4 changed files with 327 additions and 2 deletions
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9
net/Kconfig
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@ -23,6 +23,15 @@ menuconfig NET
if NET
config NETLINK_MMAP
bool "Netlink: mmaped IO"
help
This option enables support for memory mapped netlink IO. This
reduces overhead by avoiding copying data between kernel- and
userspace.
If unsure, say N.
config WANT_COMPAT_NETLINK_MESSAGES
bool
help