linux-stable/net/core
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
..
datagram.c net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
dev.c vlan: allow nested vlan_do_receive() 2011-10-30 04:43:30 -04:00
dev_addr_lists.c net: remove ndo_set_multicast_list callback 2011-08-17 20:22:03 -07:00
drop_monitor.c net,rcu: convert call_rcu(free_dm_hw_stat) to kfree_rcu() 2011-05-07 22:50:59 -07:00
dst.c net: fix potential neighbour race in dst_ifdown() 2011-08-09 21:47:14 -07:00
ethtool.c net: consolidate and fix ethtool_ops->get_settings calling 2011-09-15 17:32:26 -04:00
fib_rules.c Merge branch 'master' of ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2011-10-24 18:18:09 -04:00
filter.c filter: use unsigned int to silence static checker warning 2011-10-19 19:35:51 -04:00
flow.c net/flow: Fix potential memory leak 2011-10-17 19:18:42 -04:00
gen_estimator.c net,rcu: convert call_rcu(__gen_kill_estimator) to kfree_rcu() 2011-05-07 22:50:57 -07:00
gen_stats.c net/core: EXPORT_SYMBOL cleanups 2010-07-12 12:57:55 -07:00
iovec.c net: Limit socket I/O iovec total length to INT_MAX. 2010-10-28 11:47:52 -07:00
kmap_skb.h net: convert core to skb paged frag APIs 2011-08-24 17:52:11 -07:00
link_watch.c net: linkwatch: allow vlans to get carrier changes faster 2011-09-15 15:36:34 -04:00
Makefile net: Compute protocol sequence numbers and fragment IDs using MD5. 2011-08-06 18:33:19 -07:00
neighbour.c neigh: fix rcu splat in neigh_update() 2011-10-19 19:38:51 -04:00
net-sysfs.c net: consolidate and fix ethtool_ops->get_settings calling 2011-09-15 17:32:26 -04:00
net-sysfs.h xps: Add CONFIG_XPS 2010-11-28 18:24:14 -08:00
net-traces.c core: add tracepoints for queueing skb to rcvbuf 2011-06-21 16:06:10 -07:00
net_namespace.c rtnl: provide link dump consistency info 2011-07-01 15:39:53 -07:00
netevent.c net/core: EXPORT_SYMBOL cleanups 2010-07-12 12:57:55 -07:00
netpoll.c Merge branch 'master' of github.com:davem330/net 2011-09-22 03:23:13 -04:00
pktgen.c pktgen: remove ndelay() call 2011-10-20 17:00:21 -04:00
request_sock.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-12-08 13:47:38 -08:00
rtnetlink.c if_link: Add additional parameter to IFLA_VF_INFO for spoof checking 2011-10-16 13:15:38 -07:00
scm.c af_unix: dont send SCM_CREDENTIALS by default 2011-09-28 13:29:50 -04:00
secure_seq.c tcp: add const qualifiers where possible 2011-10-21 05:22:42 -04:00
skbuff.c net: add wireless TX status socket option 2011-11-09 16:01:02 -05:00
sock.c net: add wireless TX status socket option 2011-11-09 16:01:02 -05:00
stream.c net: Fix the condition passed to sk_wait_event() 2010-10-03 20:41:32 -07:00
sysctl_net_core.c net: Kill ratelimit.h dependency in linux/net.h 2011-05-27 13:41:33 -04:00
timestamping.c net: hold sock reference while processing tx timestamps 2011-10-24 02:54:50 -04:00
user_dma.c net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
utils.c net: Kill ratelimit.h dependency in linux/net.h 2011-05-27 13:41:33 -04:00