Commit Graph

21 Commits

Author SHA1 Message Date
Johannes Berg 00d3f14cf9 mac80211: use cfg80211s BSS infrastructure
Remove all the code from mac80211 to keep track of BSSes
and use the cfg80211-provided code completely.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-02-13 13:45:58 -05:00
Johannes Berg 881d948c23 wireless: restrict to 32 legacy rates
Since the standards only define 12 legacy rates, 32 is certainly
a sane upper limit and we don't need to use u64 everywhere. Add
sanity checking that no more than 32 rates are registered and
change the variables to u32 throughout.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29 16:01:09 -05:00
Rami Rosen eb80ed8d1f mac80211: trivial documentation fixes (enum mesh_path_flags).
This patch fixes documentation of enum mesh_path_flags in mesh.h.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29 16:00:48 -05:00
Rami Rosen 9cf2d186e4 mac80211: remove mesh_plink_close() method.
This patch removes mesh_plink_close() method as it is unused.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29 16:00:48 -05:00
Johannes Berg 1239cd58d2 wireless: move mesh config length constant
This is a constant from the 802.11 specification.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-10 15:10:16 -05:00
YanBo 79617deeeb mac80211: mesh portal functionality support
Currently the mesh code doesn't support bridging mesh point interfaces
with wired ethernet or AP to construct an MPP or MAP. This patch adds
code to support the "6 address frame format packet" functionality to
mesh point interfaces. Now the mesh network can be used as backhaul
for end to end communication.

Signed-off-by: Li YanBo <dreamfly281@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-24 16:18:02 -04:00
Johannes Berg 472dbc45dc mac80211: split off mesh handling entirely
This patch splits off mesh handling from the STA/IBSS.
Unfortunately it increases mesh code size a bit, but I
think it makes things clearer. The patch also reduces
per-interface run-time memory usage.

Also clean up a few places where ifdef is not required.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-15 16:48:20 -04:00
Jasper Bryant-Greene f698d856f6 replace net_device arguments with ieee80211_{local,sub_if_data} as appropriate
This patch replaces net_device arguments to mac80211 internal functions
with ieee80211_{local,sub_if_data} as appropriate.

It also does the same for many 802.11s mesh functions, and changes the
mesh path table to be indexed on sub_if_data rather than net_device.

If the mesh part needs to be a separate patch let me know, but since
mesh uses a lot of mac80211 functions which were being converted anyway,
the changes go hand-in-hand somewhat.

This patch probably does not convert all the functions which could be
converted, but it is a large chunk and followup patches will be
provided.

Signed-off-by: Jasper Bryant-Greene <jasper@amiton.co.nz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-08-22 16:29:58 -04:00
Luis Carlos Cobo e32f85f7b9 mac80211: fix use of skb->cb for mesh forwarding
Now we deal with mesh forwarding before the 802.11->802.3 conversion, thus
eliminating a few unnecessary steps. The next hop lookup is called from
ieee80211_master_start_xmit() instead of subif_start_xmit(). Until the next hop
is found, RA in the frame will be all zeroes for frames originating from the
device. For forwarded frames, RA will contain the TA of the received frame,
which will be necessary to send a path error if a next hop is not found.

Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-08-07 09:49:04 -04:00
Pavel Emelyanov 4caf86c692 mac80211: Prepare mesh_table_grow to failing copy_node callback.
The mesh_path_node_copy() performs kmalloc() and thus - may fail
(well, it does not now, but I'm fixing this right now). Its caller -
the mesh_table_grow() - isn't prepared for such a trick yet.

This preparation is just flush the new hash and make copy_node()
return an int value.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-21 21:47:42 -04:00
David S. Miller c2a3b23345 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/linville/wireless-2.6 2008-05-01 02:06:32 -07:00
Luis Carlos Cobo 51ceddade0 mac80211: use 4-byte mesh sequence number
This follows the new 802.11s/D2.0 draft.

Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-04-30 20:34:26 -04:00
Al Viro f375d5588f asm/unaligned.h doesn't work well as the very first include
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-27 10:09:32 -07:00
John W. Linville 2473670163 Revert "mac80211: use a struct for bss->mesh_config"
This reverts commit 6c4711b469.

That patch breaks mesh config comparison between beacons/probe reponses, so
every beacon from a mesh network would be added as a new bss. Since the
comparison has to be performed for every received beacon I believe it is best to
save the mesh config in a format easy to compare, rather than do a bunch of
unaligned accesses to compare field by field.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-04-08 14:15:46 -04:00
Luis Carlos Cobo 6c4711b469 mac80211: use a struct for bss->mesh_config
This allows cleaner code when accesing bss->mesh_config components.

Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-04-01 17:14:12 -04:00
Luis Carlos Cobo cfa22c716f mac80211: always force mesh_path deletions
Postponing the deletion is not really useful anymore.

Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06 16:40:51 -05:00
Johannes Berg 03e4497ebe mac80211: fix sta_info mesh timer bug
I noticed a bug I introduced when mesh is enabled: sta_info_destroy()
will end up calling cancel_timer() on a timer that has never been
initialized because the timer is only initialized in mesh_plink_alloc(),
not in sta_info_alloc(). This patch moves the initialization of all mesh
related fields into sta_info_alloc(), adds a bit of sanity checking to
the cfg80211 handlers and sta_info_insert() and makes mesh_plink_alloc()
a static helper function that is only used from the mesh plink code.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06 15:30:47 -05:00
Johannes Berg 73651ee639 mac80211: split sta_info_add
sta_info_add() has two functions: allocating a station info
structure and inserting it into the hash table/list. Splitting
these two functions allows allocating with GFP_KERNEL in many
places instead of GFP_ATOMIC which is now required by the RCU
protection. Additionally, in many places RCU protection is now
no longer needed at all because between sta_info_alloc() and
sta_info_insert() the caller owns the structure.

This fixes a few race conditions with setting initial flags
and similar, but not all (see comments in ieee80211_sta.c and
cfg.c). More documentation on the existing races will be in
a follow-up patch.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06 15:30:47 -05:00
Johannes Berg d0709a6518 mac80211: RCU-ify STA info structure access
This makes access to the STA hash table/list use RCU to protect
against freeing of items. However, it's not a true RCU, the
copy step is missing: whenever somebody changes a STA item it
is simply updated. This is an existing race condition that is
now somewhat understandable.

This patch also fixes the race key freeing vs. STA destruction
by making sure that sta_info_destroy() is always called under
RTNL and frees the key.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06 15:30:46 -05:00
Johannes Berg 902acc7896 mac80211: clean up mesh code
Various cleanups, reducing the #ifdef mess and other things.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06 15:30:42 -05:00
Luis Carlos Cobo ccf80ddfe4 mac80211: mesh function and data structures definitions
Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06 15:30:41 -05:00