linux.git/net/mac80211/debugfs_netdev.c, branch v2.6.27

mac80211: Fix debugfs file add/del for netdev

2008-08-27T00:06:33+00:00

Previous version was using incorrect union structures for non-AP
interfaces when adding and removing max_ratectrl_rateidx and
force_unicast_rateidx entries. Depending on the vif type, this ended
up in corrupting debugfs entries since the dentries inside different
union structures ended up going being on top of eachother.. As the
end result, debugfs files were being left behind with references to
freed data (instant kernel oops on access) and directories were not
removed properly when unloading mac80211 drivers. This patch fixes
those issues by using only a single union structure based on the vif
type.

Signed-off-by: Jouni Malinen 
Signed-off-by: John W. Linville

mac80211: revamp virtual interface handling

2008-07-14T18:30:07+00:00

This patch revamps the virtual interface handling and makes the
code much easier to follow. Fewer functions, better names, less
spaghetti code.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: make master netdev handling sane

2008-07-14T18:30:06+00:00

Currently, almost every interface type has a 'bss' pointer
pointing to BSS information. This BSS information, however,
is for a _local_ BSS, not for the BSS we joined, so having
it on a STA mode interface makes little sense, but now they
have it pointing to the master device, which is an AP mode
virtual interface. However, except for some bitrate control
data, this pointer is only used in AP/VLAN modes (for power
saving stations.)

Overall, it is not necessary to even have the master netdev
be a valid virtual interface, and it doesn't have to be on
the list of interfaces either.

This patch changes the master netdev to be special, it now
 - no longer is on the list of virtual interfaces, which
   lets me remove a lot of tests for that
 - no longer has sub_if_data attached, since that isn't used

Additionally, this patch changes some vlan/ap mode handling
that is related to these 'bss' pointers described above (but
in the VLAN case they actually make sense because there they
point to the AP they belong to); it also adds some debugging
code to IEEE80211_DEV_TO_SUB_IF to validate it is not called
on the master netdev any more.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: remove channel use statistics

2008-05-22T01:48:17+00:00

The useless channel use statistics are quite a lot of code, currently
use integer divisions in the packet fast path, are rather inaccurate
since they do not account for retries and finally nobody even cares.
Hence, remove them completely.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: a few code cleanups

2008-05-07T19:02:11+00:00

This has some code cleanups (some inspired by checkpatch), I got
bored at probably a third of the output though so if somebody
else wants to...

Signed-off-by: Johannes Berg

mac80211: rename files

2008-04-08T20:44:45+00:00

This patch renames all mac80211 files (except ieee80211_i.h) to get rid
of the useless ieee80211_ prefix.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: make debugfs files root-only

2008-04-08T20:44:43+00:00

Unfortunately, debugfs can be made to access invalid memory by
open()ing a file and then waiting until the corresponding debugfs
file has been removed (and, probably, the underlying object.)

That could be exploited by any user if the user is able to open
debugfs files and can cause networking devices, STA entries or
similar to disappear which is quite easy to do.

Hence, all debugfs files should be root-only.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: fix deadlocks in debugfs_netdev.c

2008-04-01T21:14:11+00:00

The bug shows up with CONFIG_PREEMPT enabled. Pointed out by Andrew Morton.

Cc: Andrew Morton 
Cc: Johannes Berg 
Signed-off-by: Luis Carlos Cobo 
Signed-off-by: John W. Linville

net/mac80211/debugfs_netdev.c: use of bool triggers a gcc bug

2008-04-01T21:13:17+00:00

This bool causes my gcc-4.1.0 alpha cross compiler to go into an infinite
loop.  Switching it to u8 works around that.

Cc: Johannes Berg 
Cc: Luis Carlos Cobo 
Signed-off-by: Andrew Morton 
Signed-off-by: John W. Linville

mac80211: mesh statistics and config through debugfs

2008-03-06T20:30:42+00:00

This patch contains the debugfs code for mesh statistics and configuration
parameters. Please note that generic support for r/w debugfs attributes has been
added.

Signed-off-by: Luis Carlos Cobo 
Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville