2008-02-23 07:17:13 -07:00
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/*
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2009-11-09 16:46:58 -07:00
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* Copyright (c) 2008, 2009 open80211s Ltd.
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2008-02-23 07:17:13 -07:00
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* Author: Luis Carlos Cobo <luisca@cozybit.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
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#include <linux/gfp.h>
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2008-02-23 07:17:19 -07:00
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#include <linux/kernel.h>
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#include <linux/random.h>
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2008-02-23 07:17:13 -07:00
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#include "ieee80211_i.h"
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2008-04-08 13:14:40 -06:00
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#include "rate.h"
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2008-02-23 07:17:13 -07:00
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#include "mesh.h"
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#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
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#define mpl_dbg(fmt, args...) printk(KERN_DEBUG fmt, ##args)
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#else
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#define mpl_dbg(fmt, args...) do { (void)(0); } while (0)
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#endif
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2011-08-12 21:01:00 -06:00
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#define PLINK_GET_LLID(p) (p + 2)
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#define PLINK_GET_PLID(p) (p + 4)
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2008-02-23 07:17:13 -07:00
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#define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \
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jiffies + HZ * t / 1000))
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2008-09-10 16:01:49 -06:00
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#define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries)
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#define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout)
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#define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout)
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#define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout)
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#define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks)
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2008-02-23 07:17:13 -07:00
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2012-03-06 13:48:30 -07:00
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/* We only need a valid sta if user configured a minimum rssi_threshold. */
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#define rssi_threshold_check(sta, sdata) \
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2012-02-28 18:04:08 -07:00
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(sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\
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2012-03-06 13:48:30 -07:00
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(sta && (s8) -ewma_read(&sta->avg_signal) > \
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sdata->u.mesh.mshcfg.rssi_threshold))
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2012-02-28 18:04:08 -07:00
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2008-02-23 07:17:13 -07:00
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enum plink_event {
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PLINK_UNDEFINED,
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OPN_ACPT,
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OPN_RJCT,
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OPN_IGNR,
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CNF_ACPT,
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CNF_RJCT,
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CNF_IGNR,
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CLS_ACPT,
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CLS_IGNR
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};
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2011-09-20 14:43:32 -06:00
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static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
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enum ieee80211_self_protected_actioncode action,
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u8 *da, __le16 llid, __le16 plid, __le16 reason);
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2008-02-23 07:17:13 -07:00
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static inline
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void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
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{
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2008-09-10 16:01:49 -06:00
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atomic_inc(&sdata->u.mesh.mshstats.estab_plinks);
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2008-02-25 08:27:46 -07:00
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mesh_accept_plinks_update(sdata);
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2008-02-23 07:17:13 -07:00
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}
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static inline
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void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
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{
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2008-09-10 16:01:49 -06:00
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atomic_dec(&sdata->u.mesh.mshstats.estab_plinks);
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2008-02-25 08:27:46 -07:00
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mesh_accept_plinks_update(sdata);
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2008-02-23 07:17:13 -07:00
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}
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/**
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* mesh_plink_fsm_restart - restart a mesh peer link finite state machine
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*
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2009-11-09 16:46:42 -07:00
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* @sta: mesh peer link to restart
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2008-02-23 07:17:13 -07:00
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*
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2008-05-02 17:02:02 -06:00
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* Locking: this function must be called holding sta->lock
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2008-02-23 07:17:13 -07:00
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*/
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static inline void mesh_plink_fsm_restart(struct sta_info *sta)
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{
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2011-05-13 11:45:43 -06:00
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sta->plink_state = NL80211_PLINK_LISTEN;
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2008-02-29 13:13:38 -07:00
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sta->llid = sta->plid = sta->reason = 0;
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sta->plink_retries = 0;
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2008-02-23 07:17:13 -07:00
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}
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2008-04-01 07:21:00 -06:00
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/*
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2012-04-18 20:23:42 -06:00
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* Allocate mesh sta entry and insert into station table
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2008-04-01 07:21:00 -06:00
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*/
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2008-02-27 01:56:40 -07:00
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static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
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2012-04-18 20:23:42 -06:00
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u8 *hw_addr)
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2008-02-23 07:17:13 -07:00
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{
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struct sta_info *sta;
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2012-04-18 20:23:42 -06:00
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if (sdata->local->num_sta >= MESH_MAX_PLINKS)
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2008-02-25 08:27:47 -07:00
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return NULL;
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2008-02-23 07:17:13 -07:00
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2010-02-03 05:59:58 -07:00
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sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL);
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2008-02-25 08:27:47 -07:00
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if (!sta)
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return NULL;
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2008-02-23 07:17:13 -07:00
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2012-01-12 01:31:10 -07:00
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sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
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sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
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sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
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2011-12-14 04:35:30 -07:00
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2011-09-29 08:04:36 -06:00
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set_sta_flag(sta, WLAN_STA_WME);
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2011-12-14 04:35:30 -07:00
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2008-02-23 07:17:13 -07:00
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return sta;
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}
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/**
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2010-06-21 15:14:07 -06:00
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* __mesh_plink_deactivate - deactivate mesh peer link
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2008-02-23 07:17:13 -07:00
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*
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* @sta: mesh peer link to deactivate
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*
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* All mesh paths with this peer as next hop will be flushed
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*
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2008-05-02 17:02:02 -06:00
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* Locking: the caller must hold sta->lock
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2008-02-23 07:17:13 -07:00
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*/
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2010-06-21 15:14:07 -06:00
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static bool __mesh_plink_deactivate(struct sta_info *sta)
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2008-02-23 07:17:13 -07:00
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{
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2008-02-25 08:27:46 -07:00
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struct ieee80211_sub_if_data *sdata = sta->sdata;
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2010-06-21 15:14:07 -06:00
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bool deactivated = false;
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2008-02-25 08:27:46 -07:00
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2011-05-13 11:45:43 -06:00
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if (sta->plink_state == NL80211_PLINK_ESTAB) {
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2008-02-23 07:17:13 -07:00
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mesh_plink_dec_estab_count(sdata);
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2010-06-21 15:14:07 -06:00
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deactivated = true;
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}
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2011-05-13 11:45:43 -06:00
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sta->plink_state = NL80211_PLINK_BLOCKED;
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2008-02-23 07:17:13 -07:00
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mesh_path_flush_by_nexthop(sta);
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2010-06-21 15:14:07 -06:00
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return deactivated;
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2008-02-23 07:17:13 -07:00
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}
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2008-02-23 07:17:19 -07:00
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/**
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2010-06-21 15:14:07 -06:00
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* mesh_plink_deactivate - deactivate mesh peer link
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2008-02-23 07:17:19 -07:00
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*
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* @sta: mesh peer link to deactivate
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*
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* All mesh paths with this peer as next hop will be flushed
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*/
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void mesh_plink_deactivate(struct sta_info *sta)
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{
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2010-06-21 15:14:07 -06:00
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struct ieee80211_sub_if_data *sdata = sta->sdata;
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bool deactivated;
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2008-05-02 17:02:02 -06:00
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spin_lock_bh(&sta->lock);
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2010-06-21 15:14:07 -06:00
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deactivated = __mesh_plink_deactivate(sta);
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2011-09-20 14:43:32 -06:00
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sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED);
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mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
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sta->sta.addr, sta->llid, sta->plid,
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sta->reason);
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2008-05-02 17:02:02 -06:00
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spin_unlock_bh(&sta->lock);
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2010-06-21 15:14:07 -06:00
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if (deactivated)
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ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
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2008-02-23 07:17:19 -07:00
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}
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2008-08-02 18:04:37 -06:00
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static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
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2011-08-11 20:35:12 -06:00
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enum ieee80211_self_protected_actioncode action,
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u8 *da, __le16 llid, __le16 plid, __le16 reason) {
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2008-08-02 18:04:37 -06:00
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struct ieee80211_local *local = sdata->local;
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2011-10-26 15:47:25 -06:00
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struct sk_buff *skb;
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2008-02-23 07:17:13 -07:00
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struct ieee80211_mgmt *mgmt;
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bool include_plid = false;
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2011-08-12 21:01:00 -06:00
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u16 peering_proto = 0;
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2011-10-26 15:47:25 -06:00
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u8 *pos, ie_len = 4;
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int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) +
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sizeof(mgmt->u.action.u.self_prot);
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2012-01-17 19:17:46 -07:00
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skb = dev_alloc_skb(local->tx_headroom +
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2011-10-26 15:47:25 -06:00
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hdr_len +
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2 + /* capability info */
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2 + /* AID */
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2 + 8 + /* supported rates */
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2 + (IEEE80211_MAX_SUPP_RATES - 8) +
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2 + sdata->u.mesh.mesh_id_len +
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2 + sizeof(struct ieee80211_meshconf_ie) +
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2011-10-26 15:47:27 -06:00
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2 + sizeof(struct ieee80211_ht_cap) +
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2012-03-15 12:45:16 -06:00
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2 + sizeof(struct ieee80211_ht_operation) +
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2011-10-26 15:47:25 -06:00
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2 + 8 + /* peering IE */
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sdata->u.mesh.ie_len);
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2008-02-23 07:17:13 -07:00
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if (!skb)
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return -1;
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2012-01-17 19:17:46 -07:00
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skb_reserve(skb, local->tx_headroom);
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2011-10-26 15:47:25 -06:00
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mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
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memset(mgmt, 0, hdr_len);
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2008-07-15 19:44:13 -06:00
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mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
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IEEE80211_STYPE_ACTION);
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2008-02-23 07:17:13 -07:00
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memcpy(mgmt->da, da, ETH_ALEN);
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2009-11-25 09:46:19 -07:00
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memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
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2011-05-03 17:57:10 -06:00
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memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
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2011-08-12 21:01:00 -06:00
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mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED;
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mgmt->u.action.u.self_prot.action_code = action;
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2008-02-23 07:17:13 -07:00
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2011-08-12 21:01:00 -06:00
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if (action != WLAN_SP_MESH_PEERING_CLOSE) {
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/* capability info */
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pos = skb_put(skb, 2);
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memset(pos, 0, 2);
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2011-08-11 20:35:12 -06:00
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if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
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2011-08-12 21:01:00 -06:00
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/* AID */
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pos = skb_put(skb, 2);
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2009-11-09 16:46:52 -07:00
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memcpy(pos + 2, &plid, 2);
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2008-02-23 07:17:13 -07:00
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}
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2012-04-02 22:21:20 -06:00
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if (ieee80211_add_srates_ie(&sdata->vif, skb, true) ||
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ieee80211_add_ext_srates_ie(&sdata->vif, skb, true) ||
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2011-08-11 20:35:10 -06:00
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mesh_add_rsn_ie(skb, sdata) ||
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mesh_add_meshid_ie(skb, sdata) ||
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mesh_add_meshconf_ie(skb, sdata))
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return -1;
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2011-08-12 21:01:00 -06:00
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} else { /* WLAN_SP_MESH_PEERING_CLOSE */
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if (mesh_add_meshid_ie(skb, sdata))
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return -1;
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2008-02-23 07:17:13 -07:00
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}
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2011-08-12 21:01:00 -06:00
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/* Add Mesh Peering Management element */
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2008-02-23 07:17:13 -07:00
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switch (action) {
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2011-08-11 20:35:12 -06:00
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case WLAN_SP_MESH_PEERING_OPEN:
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2008-02-23 07:17:13 -07:00
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break;
|
2011-08-11 20:35:12 -06:00
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case WLAN_SP_MESH_PEERING_CONFIRM:
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2011-08-12 21:01:00 -06:00
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ie_len += 2;
|
2008-02-23 07:17:13 -07:00
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include_plid = true;
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break;
|
2011-08-11 20:35:12 -06:00
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case WLAN_SP_MESH_PEERING_CLOSE:
|
2011-08-12 21:01:00 -06:00
|
|
|
if (plid) {
|
|
|
|
ie_len += 2;
|
2008-02-23 07:17:13 -07:00
|
|
|
include_plid = true;
|
|
|
|
}
|
2011-08-12 21:01:00 -06:00
|
|
|
ie_len += 2; /* reason code */
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
2011-08-12 21:01:00 -06:00
|
|
|
default:
|
|
|
|
return -EINVAL;
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
|
|
|
|
2011-08-12 21:01:00 -06:00
|
|
|
if (WARN_ON(skb_tailroom(skb) < 2 + ie_len))
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2008-02-23 07:17:13 -07:00
|
|
|
pos = skb_put(skb, 2 + ie_len);
|
2011-08-12 21:01:00 -06:00
|
|
|
*pos++ = WLAN_EID_PEER_MGMT;
|
2008-02-23 07:17:13 -07:00
|
|
|
*pos++ = ie_len;
|
2011-08-12 21:01:00 -06:00
|
|
|
memcpy(pos, &peering_proto, 2);
|
|
|
|
pos += 2;
|
2008-02-23 07:17:13 -07:00
|
|
|
memcpy(pos, &llid, 2);
|
2011-08-12 21:01:00 -06:00
|
|
|
pos += 2;
|
2008-02-23 07:17:13 -07:00
|
|
|
if (include_plid) {
|
|
|
|
memcpy(pos, &plid, 2);
|
2011-08-12 21:01:00 -06:00
|
|
|
pos += 2;
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
2011-08-11 20:35:12 -06:00
|
|
|
if (action == WLAN_SP_MESH_PEERING_CLOSE) {
|
2008-02-23 07:17:13 -07:00
|
|
|
memcpy(pos, &reason, 2);
|
2011-08-12 21:01:00 -06:00
|
|
|
pos += 2;
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
2011-10-26 15:47:27 -06:00
|
|
|
|
|
|
|
if (action != WLAN_SP_MESH_PEERING_CLOSE) {
|
|
|
|
if (mesh_add_ht_cap_ie(skb, sdata) ||
|
2012-03-15 12:45:16 -06:00
|
|
|
mesh_add_ht_oper_ie(skb, sdata))
|
2011-10-26 15:47:27 -06:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2011-08-12 21:01:00 -06:00
|
|
|
if (mesh_add_vendor_ies(skb, sdata))
|
|
|
|
return -1;
|
2008-02-23 07:17:13 -07:00
|
|
|
|
2009-11-18 10:42:05 -07:00
|
|
|
ieee80211_tx_skb(sdata, skb);
|
2008-02-23 07:17:13 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-04-18 20:23:42 -06:00
|
|
|
/* mesh_peer_init - initialize new mesh peer and return resulting sta_info
|
|
|
|
*
|
|
|
|
* @sdata: local meshif
|
|
|
|
* @addr: peer's address
|
|
|
|
* @elems: IEs from beacon or mesh peering frame
|
|
|
|
*
|
|
|
|
* call under RCU
|
|
|
|
*/
|
|
|
|
static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
|
2012-04-18 20:23:43 -06:00
|
|
|
u8 *addr,
|
2012-04-18 20:23:42 -06:00
|
|
|
struct ieee802_11_elems *elems)
|
2008-02-23 07:17:13 -07:00
|
|
|
{
|
2008-08-02 18:04:37 -06:00
|
|
|
struct ieee80211_local *local = sdata->local;
|
2012-04-18 20:23:43 -06:00
|
|
|
enum ieee80211_band band = local->oper_channel->band;
|
2012-04-18 20:23:42 -06:00
|
|
|
struct ieee80211_supported_band *sband;
|
2012-04-18 20:23:43 -06:00
|
|
|
u32 rates, basic_rates = 0;
|
2008-02-23 07:17:13 -07:00
|
|
|
struct sta_info *sta;
|
2012-04-26 16:01:06 -06:00
|
|
|
bool insert = false;
|
2008-02-23 07:17:13 -07:00
|
|
|
|
2012-04-18 20:23:43 -06:00
|
|
|
sband = local->hw.wiphy->bands[band];
|
|
|
|
rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates);
|
2008-02-25 08:27:46 -07:00
|
|
|
|
2012-04-18 20:23:42 -06:00
|
|
|
sta = sta_info_get(sdata, addr);
|
2008-02-23 07:17:13 -07:00
|
|
|
if (!sta) {
|
2012-04-18 20:23:42 -06:00
|
|
|
sta = mesh_plink_alloc(sdata, addr);
|
2010-02-03 05:59:58 -07:00
|
|
|
if (!sta)
|
2012-04-18 20:23:42 -06:00
|
|
|
return NULL;
|
2012-04-26 16:01:06 -06:00
|
|
|
insert = true;
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
|
|
|
|
2012-04-18 20:23:42 -06:00
|
|
|
spin_lock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
sta->last_rx = jiffies;
|
2012-04-18 20:23:43 -06:00
|
|
|
sta->sta.supp_rates[band] = rates;
|
2012-04-18 20:24:13 -06:00
|
|
|
if (elems->ht_cap_elem &&
|
|
|
|
sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT)
|
2012-04-18 20:23:42 -06:00
|
|
|
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
|
|
|
|
elems->ht_cap_elem,
|
|
|
|
&sta->sta.ht_cap);
|
|
|
|
else
|
|
|
|
memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap));
|
|
|
|
|
2012-04-26 16:01:07 -06:00
|
|
|
if (elems->ht_operation)
|
|
|
|
if (!(elems->ht_operation->ht_param &
|
|
|
|
IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
|
|
|
|
sta->sta.ht_cap.cap &=
|
|
|
|
~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
|
|
|
|
|
2012-04-18 20:23:42 -06:00
|
|
|
rate_control_rate_init(sta);
|
|
|
|
spin_unlock_bh(&sta->lock);
|
|
|
|
|
2012-04-26 16:01:06 -06:00
|
|
|
if (insert && sta_info_insert(sta))
|
|
|
|
return NULL;
|
|
|
|
|
2012-04-18 20:23:42 -06:00
|
|
|
return sta;
|
|
|
|
}
|
|
|
|
|
2012-04-18 20:23:43 -06:00
|
|
|
void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
|
|
|
|
u8 *hw_addr,
|
2012-04-18 20:23:42 -06:00
|
|
|
struct ieee802_11_elems *elems)
|
|
|
|
{
|
|
|
|
struct sta_info *sta;
|
|
|
|
|
|
|
|
/* Userspace handles peer allocation when security is enabled */
|
|
|
|
if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) {
|
|
|
|
cfg80211_notify_new_peer_candidate(sdata->dev, hw_addr,
|
|
|
|
elems->ie_start,
|
|
|
|
elems->total_len,
|
|
|
|
GFP_KERNEL);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
rcu_read_lock();
|
2012-04-18 20:23:43 -06:00
|
|
|
sta = mesh_peer_init(sdata, hw_addr, elems);
|
2012-04-18 20:23:42 -06:00
|
|
|
if (!sta)
|
|
|
|
goto out;
|
|
|
|
|
2011-04-07 16:08:35 -06:00
|
|
|
if (mesh_peer_accepts_plinks(elems) &&
|
2012-04-18 20:23:42 -06:00
|
|
|
sta->plink_state == NL80211_PLINK_LISTEN &&
|
|
|
|
sdata->u.mesh.accepting_plinks &&
|
|
|
|
sdata->u.mesh.mshcfg.auto_open_plinks &&
|
|
|
|
rssi_threshold_check(sta, sdata))
|
2008-02-23 07:17:13 -07:00
|
|
|
mesh_plink_open(sta);
|
|
|
|
|
2012-04-18 20:23:42 -06:00
|
|
|
out:
|
2008-02-25 08:27:46 -07:00
|
|
|
rcu_read_unlock();
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static void mesh_plink_timer(unsigned long data)
|
|
|
|
{
|
|
|
|
struct sta_info *sta;
|
|
|
|
__le16 llid, plid, reason;
|
|
|
|
struct ieee80211_sub_if_data *sdata;
|
|
|
|
|
2008-02-25 08:27:46 -07:00
|
|
|
/*
|
|
|
|
* This STA is valid because sta_info_destroy() will
|
|
|
|
* del_timer_sync() this timer after having made sure
|
|
|
|
* it cannot be readded (by deleting the plink.)
|
|
|
|
*/
|
2008-02-23 07:17:13 -07:00
|
|
|
sta = (struct sta_info *) data;
|
|
|
|
|
2009-05-17 03:40:42 -06:00
|
|
|
if (sta->sdata->local->quiescing) {
|
|
|
|
sta->plink_timer_was_running = true;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_lock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
if (sta->ignore_plink_timer) {
|
|
|
|
sta->ignore_plink_timer = false;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
return;
|
|
|
|
}
|
2008-10-27 16:56:10 -06:00
|
|
|
mpl_dbg("Mesh plink timer for %pM fired on state %d\n",
|
|
|
|
sta->sta.addr, sta->plink_state);
|
2008-02-23 07:17:13 -07:00
|
|
|
reason = 0;
|
|
|
|
llid = sta->llid;
|
|
|
|
plid = sta->plid;
|
2008-02-25 08:27:46 -07:00
|
|
|
sdata = sta->sdata;
|
2008-02-23 07:17:13 -07:00
|
|
|
|
|
|
|
switch (sta->plink_state) {
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_OPN_RCVD:
|
|
|
|
case NL80211_PLINK_OPN_SNT:
|
2008-02-23 07:17:13 -07:00
|
|
|
/* retry timer */
|
|
|
|
if (sta->plink_retries < dot11MeshMaxRetries(sdata)) {
|
|
|
|
u32 rand;
|
2008-10-27 16:56:10 -06:00
|
|
|
mpl_dbg("Mesh plink for %pM (retry, timeout): %d %d\n",
|
|
|
|
sta->sta.addr, sta->plink_retries,
|
|
|
|
sta->plink_timeout);
|
2008-02-23 07:17:13 -07:00
|
|
|
get_random_bytes(&rand, sizeof(u32));
|
|
|
|
sta->plink_timeout = sta->plink_timeout +
|
|
|
|
rand % sta->plink_timeout;
|
|
|
|
++sta->plink_retries;
|
2008-02-25 08:27:46 -07:00
|
|
|
mod_plink_timer(sta, sta->plink_timeout);
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
|
|
|
|
sta->sta.addr, llid, 0, 0);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES);
|
2008-02-23 07:17:13 -07:00
|
|
|
/* fall through on else */
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_CNF_RCVD:
|
2008-02-23 07:17:13 -07:00
|
|
|
/* confirm timer */
|
|
|
|
if (!reason)
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT);
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_HOLDING;
|
2008-02-25 08:27:46 -07:00
|
|
|
mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
|
|
|
|
sta->sta.addr, llid, plid, reason);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_HOLDING:
|
2008-02-23 07:17:13 -07:00
|
|
|
/* holding timer */
|
2008-02-25 08:27:46 -07:00
|
|
|
del_timer(&sta->plink_timer);
|
2008-02-23 07:17:13 -07:00
|
|
|
mesh_plink_fsm_restart(sta);
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
default:
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-05-17 03:40:42 -06:00
|
|
|
#ifdef CONFIG_PM
|
|
|
|
void mesh_plink_quiesce(struct sta_info *sta)
|
|
|
|
{
|
|
|
|
if (del_timer_sync(&sta->plink_timer))
|
|
|
|
sta->plink_timer_was_running = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void mesh_plink_restart(struct sta_info *sta)
|
|
|
|
{
|
|
|
|
if (sta->plink_timer_was_running) {
|
|
|
|
add_timer(&sta->plink_timer);
|
|
|
|
sta->plink_timer_was_running = false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2008-02-23 07:17:13 -07:00
|
|
|
static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout)
|
|
|
|
{
|
|
|
|
sta->plink_timer.expires = jiffies + (HZ * timeout / 1000);
|
|
|
|
sta->plink_timer.data = (unsigned long) sta;
|
|
|
|
sta->plink_timer.function = mesh_plink_timer;
|
|
|
|
sta->plink_timeout = timeout;
|
|
|
|
add_timer(&sta->plink_timer);
|
|
|
|
}
|
|
|
|
|
|
|
|
int mesh_plink_open(struct sta_info *sta)
|
|
|
|
{
|
|
|
|
__le16 llid;
|
2008-02-25 08:27:46 -07:00
|
|
|
struct ieee80211_sub_if_data *sdata = sta->sdata;
|
2008-02-23 07:17:13 -07:00
|
|
|
|
2011-09-29 08:04:36 -06:00
|
|
|
if (!test_sta_flag(sta, WLAN_STA_AUTH))
|
2011-04-07 16:08:32 -06:00
|
|
|
return -EPERM;
|
|
|
|
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_lock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
get_random_bytes(&llid, 2);
|
|
|
|
sta->llid = llid;
|
2011-05-13 11:45:43 -06:00
|
|
|
if (sta->plink_state != NL80211_PLINK_LISTEN) {
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
return -EBUSY;
|
|
|
|
}
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_OPN_SNT;
|
2008-02-23 07:17:13 -07:00
|
|
|
mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-10-27 16:56:10 -06:00
|
|
|
mpl_dbg("Mesh plink: starting establishment with %pM\n",
|
|
|
|
sta->sta.addr);
|
2008-02-23 07:17:13 -07:00
|
|
|
|
2011-08-11 20:35:12 -06:00
|
|
|
return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
|
2008-09-10 16:02:02 -06:00
|
|
|
sta->sta.addr, llid, 0, 0);
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
void mesh_plink_block(struct sta_info *sta)
|
|
|
|
{
|
2010-06-21 15:14:07 -06:00
|
|
|
struct ieee80211_sub_if_data *sdata = sta->sdata;
|
|
|
|
bool deactivated;
|
|
|
|
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_lock_bh(&sta->lock);
|
2010-06-21 15:14:07 -06:00
|
|
|
deactivated = __mesh_plink_deactivate(sta);
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_BLOCKED;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2010-06-21 15:14:07 -06:00
|
|
|
|
|
|
|
if (deactivated)
|
|
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-08-02 18:04:37 -06:00
|
|
|
void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt,
|
2008-02-23 07:17:13 -07:00
|
|
|
size_t len, struct ieee80211_rx_status *rx_status)
|
|
|
|
{
|
|
|
|
struct ieee802_11_elems elems;
|
|
|
|
struct sta_info *sta;
|
|
|
|
enum plink_event event;
|
2011-08-11 20:35:12 -06:00
|
|
|
enum ieee80211_self_protected_actioncode ftype;
|
2008-02-23 07:17:13 -07:00
|
|
|
size_t baselen;
|
2010-10-08 14:27:07 -06:00
|
|
|
bool deactivated, matches_local = true;
|
2008-02-23 07:17:13 -07:00
|
|
|
u8 ie_len;
|
|
|
|
u8 *baseaddr;
|
|
|
|
__le16 plid, llid, reason;
|
2009-11-09 16:46:48 -07:00
|
|
|
#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
|
|
|
|
static const char *mplstates[] = {
|
2011-05-13 11:45:43 -06:00
|
|
|
[NL80211_PLINK_LISTEN] = "LISTEN",
|
|
|
|
[NL80211_PLINK_OPN_SNT] = "OPN-SNT",
|
|
|
|
[NL80211_PLINK_OPN_RCVD] = "OPN-RCVD",
|
|
|
|
[NL80211_PLINK_CNF_RCVD] = "CNF_RCVD",
|
|
|
|
[NL80211_PLINK_ESTAB] = "ESTAB",
|
|
|
|
[NL80211_PLINK_HOLDING] = "HOLDING",
|
|
|
|
[NL80211_PLINK_BLOCKED] = "BLOCKED"
|
2009-11-09 16:46:48 -07:00
|
|
|
};
|
|
|
|
#endif
|
2008-02-23 07:17:13 -07:00
|
|
|
|
2008-09-08 07:41:59 -06:00
|
|
|
/* need action_code, aux */
|
|
|
|
if (len < IEEE80211_MIN_ACTION_SIZE + 3)
|
|
|
|
return;
|
|
|
|
|
2008-02-23 07:17:13 -07:00
|
|
|
if (is_multicast_ether_addr(mgmt->da)) {
|
|
|
|
mpl_dbg("Mesh plink: ignore frame from multicast address");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2011-08-12 21:01:00 -06:00
|
|
|
baseaddr = mgmt->u.action.u.self_prot.variable;
|
|
|
|
baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt;
|
|
|
|
if (mgmt->u.action.u.self_prot.action_code ==
|
2011-08-11 20:35:12 -06:00
|
|
|
WLAN_SP_MESH_PEERING_CONFIRM) {
|
2008-02-23 07:17:13 -07:00
|
|
|
baseaddr += 4;
|
2009-08-12 12:03:44 -06:00
|
|
|
baselen += 4;
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
|
|
|
ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
|
2011-08-12 21:01:00 -06:00
|
|
|
if (!elems.peering) {
|
2008-02-23 07:17:13 -07:00
|
|
|
mpl_dbg("Mesh plink: missing necessary peer link ie\n");
|
|
|
|
return;
|
|
|
|
}
|
2011-05-03 17:57:07 -06:00
|
|
|
if (elems.rsn_len &&
|
|
|
|
sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) {
|
2011-04-07 16:08:29 -06:00
|
|
|
mpl_dbg("Mesh plink: can't establish link with secure peer\n");
|
|
|
|
return;
|
|
|
|
}
|
2008-02-23 07:17:13 -07:00
|
|
|
|
2011-08-12 21:01:00 -06:00
|
|
|
ftype = mgmt->u.action.u.self_prot.action_code;
|
|
|
|
ie_len = elems.peering_len;
|
|
|
|
if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) ||
|
|
|
|
(ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) ||
|
|
|
|
(ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6
|
|
|
|
&& ie_len != 8)) {
|
2009-11-09 16:46:43 -07:00
|
|
|
mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n",
|
|
|
|
ftype, ie_len);
|
2008-02-23 07:17:13 -07:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2011-08-11 20:35:12 -06:00
|
|
|
if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
|
|
|
|
(!elems.mesh_id || !elems.mesh_config)) {
|
2008-02-23 07:17:13 -07:00
|
|
|
mpl_dbg("Mesh plink: missing necessary ie\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
/* Note the lines below are correct, the llid in the frame is the plid
|
|
|
|
* from the point of view of this host.
|
|
|
|
*/
|
2011-08-12 21:01:00 -06:00
|
|
|
memcpy(&plid, PLINK_GET_LLID(elems.peering), 2);
|
2011-08-11 20:35:12 -06:00
|
|
|
if (ftype == WLAN_SP_MESH_PEERING_CONFIRM ||
|
2011-08-12 21:01:00 -06:00
|
|
|
(ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8))
|
|
|
|
memcpy(&llid, PLINK_GET_PLID(elems.peering), 2);
|
2008-02-23 07:17:13 -07:00
|
|
|
|
2008-02-25 08:27:46 -07:00
|
|
|
rcu_read_lock();
|
|
|
|
|
2009-11-25 09:46:18 -07:00
|
|
|
sta = sta_info_get(sdata, mgmt->sa);
|
2011-08-11 20:35:12 -06:00
|
|
|
if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) {
|
2008-02-23 07:17:13 -07:00
|
|
|
mpl_dbg("Mesh plink: cls or cnf from unknown peer\n");
|
2008-02-25 08:27:46 -07:00
|
|
|
rcu_read_unlock();
|
2008-02-23 07:17:13 -07:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2012-02-28 18:04:08 -07:00
|
|
|
if (ftype == WLAN_SP_MESH_PEERING_OPEN &&
|
2012-03-06 13:48:30 -07:00
|
|
|
!rssi_threshold_check(sta, sdata)) {
|
2012-02-28 18:04:08 -07:00
|
|
|
mpl_dbg("Mesh plink: %pM does not meet rssi threshold\n",
|
2012-03-06 13:48:30 -07:00
|
|
|
mgmt->sa);
|
2012-02-28 18:04:08 -07:00
|
|
|
rcu_read_unlock();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2011-09-29 08:04:36 -06:00
|
|
|
if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
|
2011-04-07 16:08:32 -06:00
|
|
|
mpl_dbg("Mesh plink: Action frame from non-authed peer\n");
|
|
|
|
rcu_read_unlock();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2011-05-13 11:45:43 -06:00
|
|
|
if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) {
|
2008-02-25 08:27:46 -07:00
|
|
|
rcu_read_unlock();
|
2008-02-23 07:17:13 -07:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now we will figure out the appropriate event... */
|
|
|
|
event = PLINK_UNDEFINED;
|
2011-08-11 20:35:12 -06:00
|
|
|
if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
|
2012-04-18 20:23:43 -06:00
|
|
|
!mesh_matches_local(sdata, &elems)) {
|
2010-10-08 14:27:07 -06:00
|
|
|
matches_local = false;
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (ftype) {
|
2011-08-11 20:35:12 -06:00
|
|
|
case WLAN_SP_MESH_PEERING_OPEN:
|
2008-02-23 07:17:13 -07:00
|
|
|
event = OPN_RJCT;
|
|
|
|
break;
|
2011-08-11 20:35:12 -06:00
|
|
|
case WLAN_SP_MESH_PEERING_CONFIRM:
|
2008-02-23 07:17:13 -07:00
|
|
|
event = CNF_RJCT;
|
|
|
|
break;
|
2011-08-11 20:35:12 -06:00
|
|
|
default:
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
2010-10-08 14:27:07 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
if (!sta && !matches_local) {
|
|
|
|
rcu_read_unlock();
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
|
2010-10-08 14:27:07 -06:00
|
|
|
llid = 0;
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
|
|
|
|
mgmt->sa, llid, plid, reason);
|
2010-10-08 14:27:07 -06:00
|
|
|
return;
|
2008-02-23 07:17:13 -07:00
|
|
|
} else if (!sta) {
|
2011-08-11 20:35:12 -06:00
|
|
|
/* ftype == WLAN_SP_MESH_PEERING_OPEN */
|
2008-02-23 07:17:13 -07:00
|
|
|
if (!mesh_plink_free_count(sdata)) {
|
|
|
|
mpl_dbg("Mesh plink error: no more free plinks\n");
|
2008-02-25 08:27:47 -07:00
|
|
|
rcu_read_unlock();
|
|
|
|
return;
|
|
|
|
}
|
2008-02-23 07:17:13 -07:00
|
|
|
event = OPN_ACPT;
|
2010-10-08 14:27:07 -06:00
|
|
|
} else if (matches_local) {
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (ftype) {
|
2011-08-11 20:35:12 -06:00
|
|
|
case WLAN_SP_MESH_PEERING_OPEN:
|
2008-02-23 07:17:13 -07:00
|
|
|
if (!mesh_plink_free_count(sdata) ||
|
2008-02-25 08:27:46 -07:00
|
|
|
(sta->plid && sta->plid != plid))
|
2008-02-23 07:17:13 -07:00
|
|
|
event = OPN_IGNR;
|
|
|
|
else
|
|
|
|
event = OPN_ACPT;
|
|
|
|
break;
|
2011-08-11 20:35:12 -06:00
|
|
|
case WLAN_SP_MESH_PEERING_CONFIRM:
|
2008-02-23 07:17:13 -07:00
|
|
|
if (!mesh_plink_free_count(sdata) ||
|
2008-02-25 08:27:46 -07:00
|
|
|
(sta->llid != llid || sta->plid != plid))
|
2008-02-23 07:17:13 -07:00
|
|
|
event = CNF_IGNR;
|
|
|
|
else
|
|
|
|
event = CNF_ACPT;
|
|
|
|
break;
|
2011-08-11 20:35:12 -06:00
|
|
|
case WLAN_SP_MESH_PEERING_CLOSE:
|
2011-05-13 11:45:43 -06:00
|
|
|
if (sta->plink_state == NL80211_PLINK_ESTAB)
|
2008-02-23 07:17:13 -07:00
|
|
|
/* Do not check for llid or plid. This does not
|
|
|
|
* follow the standard but since multiple plinks
|
|
|
|
* per sta are not supported, it is necessary in
|
|
|
|
* order to avoid a livelock when MP A sees an
|
|
|
|
* establish peer link to MP B but MP B does not
|
|
|
|
* see it. This can be caused by a timeout in
|
|
|
|
* B's peer link establishment or B beign
|
|
|
|
* restarted.
|
|
|
|
*/
|
|
|
|
event = CLS_ACPT;
|
|
|
|
else if (sta->plid != plid)
|
|
|
|
event = CLS_IGNR;
|
|
|
|
else if (ie_len == 7 && sta->llid != llid)
|
|
|
|
event = CLS_IGNR;
|
|
|
|
else
|
|
|
|
event = CLS_ACPT;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
mpl_dbg("Mesh plink: unknown frame subtype\n");
|
2008-02-25 08:27:46 -07:00
|
|
|
rcu_read_unlock();
|
2008-02-23 07:17:13 -07:00
|
|
|
return;
|
|
|
|
}
|
2012-04-18 20:23:42 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
if (event == OPN_ACPT) {
|
|
|
|
/* allocate sta entry if necessary and update info */
|
2012-04-18 20:23:43 -06:00
|
|
|
sta = mesh_peer_init(sdata, mgmt->sa, &elems);
|
2012-04-18 20:23:42 -06:00
|
|
|
if (!sta) {
|
|
|
|
mpl_dbg("Mesh plink: failed to init peer!\n");
|
|
|
|
rcu_read_unlock();
|
|
|
|
return;
|
|
|
|
}
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
|
|
|
|
2009-11-09 16:46:48 -07:00
|
|
|
mpl_dbg("Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n",
|
|
|
|
mgmt->sa, mplstates[sta->plink_state],
|
2008-10-27 16:56:10 -06:00
|
|
|
le16_to_cpu(sta->llid), le16_to_cpu(sta->plid),
|
|
|
|
event);
|
2008-02-23 07:17:13 -07:00
|
|
|
reason = 0;
|
2012-04-18 20:23:42 -06:00
|
|
|
spin_lock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (sta->plink_state) {
|
|
|
|
/* spin_unlock as soon as state is updated at each case */
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_LISTEN:
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (event) {
|
|
|
|
case CLS_ACPT:
|
|
|
|
mesh_plink_fsm_restart(sta);
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
case OPN_ACPT:
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_OPN_RCVD;
|
2008-02-23 07:17:13 -07:00
|
|
|
sta->plid = plid;
|
|
|
|
get_random_bytes(&llid, 2);
|
|
|
|
sta->llid = llid;
|
|
|
|
mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata,
|
|
|
|
WLAN_SP_MESH_PEERING_OPEN,
|
|
|
|
sta->sta.addr, llid, 0, 0);
|
|
|
|
mesh_plink_frame_tx(sdata,
|
|
|
|
WLAN_SP_MESH_PEERING_CONFIRM,
|
|
|
|
sta->sta.addr, llid, plid, 0);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
default:
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_OPN_SNT:
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (event) {
|
|
|
|
case OPN_RJCT:
|
|
|
|
case CNF_RJCT:
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
|
2008-02-23 07:17:13 -07:00
|
|
|
case CLS_ACPT:
|
|
|
|
if (!reason)
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
|
2008-02-23 07:17:13 -07:00
|
|
|
sta->reason = reason;
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_HOLDING;
|
2008-02-23 07:17:13 -07:00
|
|
|
if (!mod_plink_timer(sta,
|
|
|
|
dot11MeshHoldingTimeout(sdata)))
|
|
|
|
sta->ignore_plink_timer = true;
|
|
|
|
|
|
|
|
llid = sta->llid;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata,
|
|
|
|
WLAN_SP_MESH_PEERING_CLOSE,
|
|
|
|
sta->sta.addr, llid, plid, reason);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
case OPN_ACPT:
|
|
|
|
/* retry timer is left untouched */
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_OPN_RCVD;
|
2008-02-23 07:17:13 -07:00
|
|
|
sta->plid = plid;
|
|
|
|
llid = sta->llid;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata,
|
|
|
|
WLAN_SP_MESH_PEERING_CONFIRM,
|
|
|
|
sta->sta.addr, llid, plid, 0);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
case CNF_ACPT:
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_CNF_RCVD;
|
2008-02-23 07:17:13 -07:00
|
|
|
if (!mod_plink_timer(sta,
|
|
|
|
dot11MeshConfirmTimeout(sdata)))
|
|
|
|
sta->ignore_plink_timer = true;
|
|
|
|
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
default:
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_OPN_RCVD:
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (event) {
|
|
|
|
case OPN_RJCT:
|
|
|
|
case CNF_RJCT:
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
|
2008-02-23 07:17:13 -07:00
|
|
|
case CLS_ACPT:
|
|
|
|
if (!reason)
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
|
2008-02-23 07:17:13 -07:00
|
|
|
sta->reason = reason;
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_HOLDING;
|
2008-02-23 07:17:13 -07:00
|
|
|
if (!mod_plink_timer(sta,
|
|
|
|
dot11MeshHoldingTimeout(sdata)))
|
|
|
|
sta->ignore_plink_timer = true;
|
|
|
|
|
|
|
|
llid = sta->llid;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
|
|
|
|
sta->sta.addr, llid, plid, reason);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
case OPN_ACPT:
|
|
|
|
llid = sta->llid;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata,
|
|
|
|
WLAN_SP_MESH_PEERING_CONFIRM,
|
|
|
|
sta->sta.addr, llid, plid, 0);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
case CNF_ACPT:
|
2008-02-25 08:27:46 -07:00
|
|
|
del_timer(&sta->plink_timer);
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_ESTAB;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2010-06-21 15:14:07 -06:00
|
|
|
mesh_plink_inc_estab_count(sdata);
|
|
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
|
2008-10-27 16:56:10 -06:00
|
|
|
mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
|
|
|
|
sta->sta.addr);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
default:
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_CNF_RCVD:
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (event) {
|
|
|
|
case OPN_RJCT:
|
|
|
|
case CNF_RJCT:
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
|
2008-02-23 07:17:13 -07:00
|
|
|
case CLS_ACPT:
|
|
|
|
if (!reason)
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
|
2008-02-23 07:17:13 -07:00
|
|
|
sta->reason = reason;
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_HOLDING;
|
2008-02-23 07:17:13 -07:00
|
|
|
if (!mod_plink_timer(sta,
|
|
|
|
dot11MeshHoldingTimeout(sdata)))
|
|
|
|
sta->ignore_plink_timer = true;
|
|
|
|
|
|
|
|
llid = sta->llid;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata,
|
|
|
|
WLAN_SP_MESH_PEERING_CLOSE,
|
|
|
|
sta->sta.addr, llid, plid, reason);
|
2008-02-25 02:11:50 -07:00
|
|
|
break;
|
2008-02-23 07:17:13 -07:00
|
|
|
case OPN_ACPT:
|
2008-02-25 08:27:46 -07:00
|
|
|
del_timer(&sta->plink_timer);
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_ESTAB;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2010-06-21 15:14:07 -06:00
|
|
|
mesh_plink_inc_estab_count(sdata);
|
|
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
|
2008-10-27 16:56:10 -06:00
|
|
|
mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
|
|
|
|
sta->sta.addr);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata,
|
|
|
|
WLAN_SP_MESH_PEERING_CONFIRM,
|
|
|
|
sta->sta.addr, llid, plid, 0);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
default:
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_ESTAB:
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (event) {
|
|
|
|
case CLS_ACPT:
|
2011-08-11 20:35:12 -06:00
|
|
|
reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
|
2008-02-23 07:17:13 -07:00
|
|
|
sta->reason = reason;
|
2010-06-21 15:14:07 -06:00
|
|
|
deactivated = __mesh_plink_deactivate(sta);
|
2011-05-13 11:45:43 -06:00
|
|
|
sta->plink_state = NL80211_PLINK_HOLDING;
|
2008-02-23 07:17:13 -07:00
|
|
|
llid = sta->llid;
|
2008-02-25 08:27:46 -07:00
|
|
|
mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2010-06-21 15:14:07 -06:00
|
|
|
if (deactivated)
|
|
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
|
|
|
|
sta->sta.addr, llid, plid, reason);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
case OPN_ACPT:
|
|
|
|
llid = sta->llid;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata,
|
|
|
|
WLAN_SP_MESH_PEERING_CONFIRM,
|
|
|
|
sta->sta.addr, llid, plid, 0);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
default:
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
2011-05-13 11:45:43 -06:00
|
|
|
case NL80211_PLINK_HOLDING:
|
2008-02-23 07:17:13 -07:00
|
|
|
switch (event) {
|
|
|
|
case CLS_ACPT:
|
2008-02-25 08:27:46 -07:00
|
|
|
if (del_timer(&sta->plink_timer))
|
2008-02-23 07:17:13 -07:00
|
|
|
sta->ignore_plink_timer = 1;
|
|
|
|
mesh_plink_fsm_restart(sta);
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
case OPN_ACPT:
|
|
|
|
case CNF_ACPT:
|
|
|
|
case OPN_RJCT:
|
|
|
|
case CNF_RJCT:
|
|
|
|
llid = sta->llid;
|
|
|
|
reason = sta->reason;
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2011-08-11 20:35:12 -06:00
|
|
|
mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
|
|
|
|
sta->sta.addr, llid, plid, reason);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
default:
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
2008-02-29 16:46:08 -07:00
|
|
|
/* should not get here, PLINK_BLOCKED is dealt with at the
|
tree-wide: Assorted spelling fixes
In particular, several occurances of funny versions of 'success',
'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address',
'beginning', 'desirable', 'separate' and 'necessary' are fixed.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Joe Perches <joe@perches.com>
Cc: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-02-02 17:01:28 -07:00
|
|
|
* beginning of the function
|
2008-02-23 07:17:13 -07:00
|
|
|
*/
|
2008-05-02 17:02:02 -06:00
|
|
|
spin_unlock_bh(&sta->lock);
|
2008-02-23 07:17:13 -07:00
|
|
|
break;
|
|
|
|
}
|
2008-02-25 08:27:46 -07:00
|
|
|
|
|
|
|
rcu_read_unlock();
|
2008-02-23 07:17:13 -07:00
|
|
|
}
|