linux/arch/xtensa
Johannes Berg 6e3e939f3b net: add wireless TX status socket option
The 802.1X EAPOL handshake hostapd does requires
knowing whether the frame was ack'ed by the peer.
Currently, we fudge this pretty badly by not even
transmitting the frame as a normal data frame but
injecting it with radiotap and getting the status
out of radiotap monitor as well. This is rather
complex, confuses users (mon.wlan0 presence) and
doesn't work with all hardware.

To get rid of that hack, introduce a real wifi TX
status option for data frame transmissions.

This works similar to the existing TX timestamping
in that it reflects the SKB back to the socket's
error queue with a SCM_WIFI_STATUS cmsg that has
an int indicating ACK status (0/1).

Since it is possible that at some point we will
want to have TX timestamping and wifi status in a
single errqueue SKB (there's little point in not
doing that), redefine SO_EE_ORIGIN_TIMESTAMPING
to SO_EE_ORIGIN_TXSTATUS which can collect more
than just the timestamp; keep the old constant
as an alias of course. Currently the internal APIs
don't make that possible, but it wouldn't be hard
to split them up in a way that makes it possible.

Thanks to Neil Horman for helping me figure out
the functions that add the control messages.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-09 16:01:02 -05:00
..
boot xtensa: change to new flag variable 2011-03-17 14:02:57 +01:00
configs time: Cleanup old CONFIG_GENERIC_TIME references that snuck in 2011-10-04 13:07:47 -07:00
include/asm net: add wireless TX status socket option 2011-11-09 16:01:02 -05:00
kernel atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
lib xtensa: move headers files to arch/xtensa/include 2008-11-06 10:25:09 -08:00
mm mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
platforms net: remove use of ndo_set_multicast_list in drivers 2011-08-17 20:22:03 -07:00
variants XTENSA: static should be at beginning of declaration 2011-07-11 14:13:47 +02:00
Kconfig xtensa: Use generic config PREEMPT definition 2011-07-05 18:01:16 +02:00
Kconfig.debug
Makefile xtensa: Add -mforce-no-pic option is supported 2010-05-02 01:00:22 -07:00