forked from luck/tmp_suning_uos_patched
5a0e3ad6af
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>
756 lines
19 KiB
C
756 lines
19 KiB
C
/*
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* Copyright (c) 2008, 2009 open80211s Ltd.
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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 <linux/gfp.h>
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#include <linux/kernel.h>
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#include <linux/random.h>
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#include "ieee80211_i.h"
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#include "rate.h"
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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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#define PLINK_GET_LLID(p) (p + 4)
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#define PLINK_GET_PLID(p) (p + 6)
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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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/* Peer link cancel reasons, all subject to ANA approval */
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#define MESH_LINK_CANCELLED 2
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#define MESH_MAX_NEIGHBORS 3
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#define MESH_CAPABILITY_POLICY_VIOLATION 4
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#define MESH_CLOSE_RCVD 5
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#define MESH_MAX_RETRIES 6
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#define MESH_CONFIRM_TIMEOUT 7
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#define MESH_SECURITY_ROLE_NEGOTIATION_DIFFERS 8
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#define MESH_SECURITY_AUTHENTICATION_IMPOSSIBLE 9
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#define MESH_SECURITY_FAILED_VERIFICATION 10
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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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enum plink_frame_type {
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PLINK_OPEN = 0,
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PLINK_CONFIRM,
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PLINK_CLOSE
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};
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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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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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atomic_inc(&sdata->u.mesh.mshstats.estab_plinks);
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mesh_accept_plinks_update(sdata);
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ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
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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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atomic_dec(&sdata->u.mesh.mshstats.estab_plinks);
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mesh_accept_plinks_update(sdata);
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ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
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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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* @sta: mesh peer link to restart
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*
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* Locking: this function must be called holding sta->lock
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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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sta->plink_state = PLINK_LISTEN;
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sta->llid = sta->plid = sta->reason = 0;
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sta->plink_retries = 0;
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}
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/*
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* NOTE: This is just an alias for sta_info_alloc(), see notes
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* on it in the lifecycle management section!
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*/
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static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
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u8 *hw_addr, u32 rates)
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{
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struct ieee80211_local *local = sdata->local;
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struct sta_info *sta;
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if (local->num_sta >= MESH_MAX_PLINKS)
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return NULL;
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sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL);
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if (!sta)
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return NULL;
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sta->flags = WLAN_STA_AUTHORIZED;
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sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
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rate_control_rate_init(sta);
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return sta;
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}
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/**
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* mesh_plink_deactivate - deactivate mesh peer link
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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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* Locking: the caller must hold sta->lock
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*/
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static void __mesh_plink_deactivate(struct sta_info *sta)
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{
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struct ieee80211_sub_if_data *sdata = sta->sdata;
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if (sta->plink_state == PLINK_ESTAB)
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mesh_plink_dec_estab_count(sdata);
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sta->plink_state = PLINK_BLOCKED;
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mesh_path_flush_by_nexthop(sta);
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}
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/**
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* __mesh_plink_deactivate - deactivate mesh peer link
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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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spin_lock_bh(&sta->lock);
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__mesh_plink_deactivate(sta);
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spin_unlock_bh(&sta->lock);
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}
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static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
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enum plink_frame_type action, u8 *da, __le16 llid, __le16 plid,
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__le16 reason) {
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struct ieee80211_local *local = sdata->local;
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struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
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struct ieee80211_mgmt *mgmt;
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bool include_plid = false;
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static const u8 meshpeeringproto[] = { 0x00, 0x0F, 0xAC, 0x2A };
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u8 *pos;
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int ie_len;
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if (!skb)
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return -1;
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skb_reserve(skb, local->hw.extra_tx_headroom);
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/* 25 is the size of the common mgmt part (24) plus the size of the
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* common action part (1)
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*/
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mgmt = (struct ieee80211_mgmt *)
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skb_put(skb, 25 + sizeof(mgmt->u.action.u.plink_action));
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memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.plink_action));
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mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
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IEEE80211_STYPE_ACTION);
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memcpy(mgmt->da, da, ETH_ALEN);
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memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
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/* BSSID is left zeroed, wildcard value */
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mgmt->u.action.category = MESH_PLINK_CATEGORY;
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mgmt->u.action.u.plink_action.action_code = action;
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if (action == PLINK_CLOSE)
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mgmt->u.action.u.plink_action.aux = reason;
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else {
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mgmt->u.action.u.plink_action.aux = cpu_to_le16(0x0);
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if (action == PLINK_CONFIRM) {
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pos = skb_put(skb, 4);
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/* two-byte status code followed by two-byte AID */
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memset(pos, 0, 2);
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memcpy(pos + 2, &plid, 2);
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}
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mesh_mgmt_ies_add(skb, sdata);
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}
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/* Add Peer Link Management element */
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switch (action) {
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case PLINK_OPEN:
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ie_len = 6;
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break;
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case PLINK_CONFIRM:
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ie_len = 8;
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include_plid = true;
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break;
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case PLINK_CLOSE:
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default:
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if (!plid)
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ie_len = 8;
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else {
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ie_len = 10;
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include_plid = true;
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}
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break;
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}
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pos = skb_put(skb, 2 + ie_len);
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*pos++ = WLAN_EID_PEER_LINK;
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*pos++ = ie_len;
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memcpy(pos, meshpeeringproto, sizeof(meshpeeringproto));
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pos += 4;
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memcpy(pos, &llid, 2);
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if (include_plid) {
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pos += 2;
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memcpy(pos, &plid, 2);
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}
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if (action == PLINK_CLOSE) {
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pos += 2;
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memcpy(pos, &reason, 2);
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}
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ieee80211_tx_skb(sdata, skb);
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return 0;
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}
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void mesh_neighbour_update(u8 *hw_addr, u32 rates, struct ieee80211_sub_if_data *sdata,
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bool peer_accepting_plinks)
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{
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struct ieee80211_local *local = sdata->local;
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struct sta_info *sta;
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rcu_read_lock();
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sta = sta_info_get(sdata, hw_addr);
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if (!sta) {
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rcu_read_unlock();
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sta = mesh_plink_alloc(sdata, hw_addr, rates);
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if (!sta)
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return;
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if (sta_info_insert_rcu(sta)) {
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rcu_read_unlock();
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return;
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}
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}
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sta->last_rx = jiffies;
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sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
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if (peer_accepting_plinks && sta->plink_state == PLINK_LISTEN &&
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sdata->u.mesh.accepting_plinks &&
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sdata->u.mesh.mshcfg.auto_open_plinks)
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mesh_plink_open(sta);
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rcu_read_unlock();
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}
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static void mesh_plink_timer(unsigned long data)
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{
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struct sta_info *sta;
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__le16 llid, plid, reason;
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struct ieee80211_sub_if_data *sdata;
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/*
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* This STA is valid because sta_info_destroy() will
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* del_timer_sync() this timer after having made sure
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* it cannot be readded (by deleting the plink.)
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*/
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sta = (struct sta_info *) data;
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if (sta->sdata->local->quiescing) {
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sta->plink_timer_was_running = true;
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return;
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}
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spin_lock_bh(&sta->lock);
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if (sta->ignore_plink_timer) {
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sta->ignore_plink_timer = false;
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spin_unlock_bh(&sta->lock);
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return;
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}
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mpl_dbg("Mesh plink timer for %pM fired on state %d\n",
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sta->sta.addr, sta->plink_state);
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reason = 0;
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llid = sta->llid;
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plid = sta->plid;
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sdata = sta->sdata;
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switch (sta->plink_state) {
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case PLINK_OPN_RCVD:
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case PLINK_OPN_SNT:
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/* retry timer */
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if (sta->plink_retries < dot11MeshMaxRetries(sdata)) {
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u32 rand;
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mpl_dbg("Mesh plink for %pM (retry, timeout): %d %d\n",
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sta->sta.addr, sta->plink_retries,
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sta->plink_timeout);
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get_random_bytes(&rand, sizeof(u32));
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sta->plink_timeout = sta->plink_timeout +
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rand % sta->plink_timeout;
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++sta->plink_retries;
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mod_plink_timer(sta, sta->plink_timeout);
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spin_unlock_bh(&sta->lock);
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mesh_plink_frame_tx(sdata, PLINK_OPEN, sta->sta.addr, llid,
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0, 0);
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break;
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}
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reason = cpu_to_le16(MESH_MAX_RETRIES);
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/* fall through on else */
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case PLINK_CNF_RCVD:
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/* confirm timer */
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if (!reason)
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reason = cpu_to_le16(MESH_CONFIRM_TIMEOUT);
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sta->plink_state = PLINK_HOLDING;
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mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
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spin_unlock_bh(&sta->lock);
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mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid, plid,
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reason);
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break;
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case PLINK_HOLDING:
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/* holding timer */
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del_timer(&sta->plink_timer);
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mesh_plink_fsm_restart(sta);
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spin_unlock_bh(&sta->lock);
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break;
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default:
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spin_unlock_bh(&sta->lock);
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break;
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}
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}
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#ifdef CONFIG_PM
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void mesh_plink_quiesce(struct sta_info *sta)
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{
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if (del_timer_sync(&sta->plink_timer))
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sta->plink_timer_was_running = true;
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}
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void mesh_plink_restart(struct sta_info *sta)
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{
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if (sta->plink_timer_was_running) {
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add_timer(&sta->plink_timer);
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sta->plink_timer_was_running = false;
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}
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}
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#endif
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static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout)
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{
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sta->plink_timer.expires = jiffies + (HZ * timeout / 1000);
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sta->plink_timer.data = (unsigned long) sta;
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sta->plink_timer.function = mesh_plink_timer;
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sta->plink_timeout = timeout;
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add_timer(&sta->plink_timer);
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}
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int mesh_plink_open(struct sta_info *sta)
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{
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__le16 llid;
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struct ieee80211_sub_if_data *sdata = sta->sdata;
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spin_lock_bh(&sta->lock);
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get_random_bytes(&llid, 2);
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sta->llid = llid;
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if (sta->plink_state != PLINK_LISTEN) {
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spin_unlock_bh(&sta->lock);
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return -EBUSY;
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}
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sta->plink_state = PLINK_OPN_SNT;
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mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
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spin_unlock_bh(&sta->lock);
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mpl_dbg("Mesh plink: starting establishment with %pM\n",
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sta->sta.addr);
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return mesh_plink_frame_tx(sdata, PLINK_OPEN,
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sta->sta.addr, llid, 0, 0);
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}
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void mesh_plink_block(struct sta_info *sta)
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{
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spin_lock_bh(&sta->lock);
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__mesh_plink_deactivate(sta);
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sta->plink_state = PLINK_BLOCKED;
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spin_unlock_bh(&sta->lock);
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}
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void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt,
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size_t len, struct ieee80211_rx_status *rx_status)
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{
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struct ieee80211_local *local = sdata->local;
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struct ieee802_11_elems elems;
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struct sta_info *sta;
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enum plink_event event;
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enum plink_frame_type ftype;
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size_t baselen;
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u8 ie_len;
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u8 *baseaddr;
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__le16 plid, llid, reason;
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#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
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static const char *mplstates[] = {
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[PLINK_LISTEN] = "LISTEN",
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[PLINK_OPN_SNT] = "OPN-SNT",
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[PLINK_OPN_RCVD] = "OPN-RCVD",
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[PLINK_CNF_RCVD] = "CNF_RCVD",
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[PLINK_ESTAB] = "ESTAB",
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[PLINK_HOLDING] = "HOLDING",
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[PLINK_BLOCKED] = "BLOCKED"
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};
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#endif
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/* need action_code, aux */
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if (len < IEEE80211_MIN_ACTION_SIZE + 3)
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return;
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if (is_multicast_ether_addr(mgmt->da)) {
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mpl_dbg("Mesh plink: ignore frame from multicast address");
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return;
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}
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baseaddr = mgmt->u.action.u.plink_action.variable;
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baselen = (u8 *) mgmt->u.action.u.plink_action.variable - (u8 *) mgmt;
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if (mgmt->u.action.u.plink_action.action_code == PLINK_CONFIRM) {
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baseaddr += 4;
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baselen += 4;
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}
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ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
|
|
if (!elems.peer_link) {
|
|
mpl_dbg("Mesh plink: missing necessary peer link ie\n");
|
|
return;
|
|
}
|
|
|
|
ftype = mgmt->u.action.u.plink_action.action_code;
|
|
ie_len = elems.peer_link_len;
|
|
if ((ftype == PLINK_OPEN && ie_len != 6) ||
|
|
(ftype == PLINK_CONFIRM && ie_len != 8) ||
|
|
(ftype == PLINK_CLOSE && ie_len != 8 && ie_len != 10)) {
|
|
mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n",
|
|
ftype, ie_len);
|
|
return;
|
|
}
|
|
|
|
if (ftype != PLINK_CLOSE && (!elems.mesh_id || !elems.mesh_config)) {
|
|
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.
|
|
*/
|
|
memcpy(&plid, PLINK_GET_LLID(elems.peer_link), 2);
|
|
if (ftype == PLINK_CONFIRM || (ftype == PLINK_CLOSE && ie_len == 10))
|
|
memcpy(&llid, PLINK_GET_PLID(elems.peer_link), 2);
|
|
|
|
rcu_read_lock();
|
|
|
|
sta = sta_info_get(sdata, mgmt->sa);
|
|
if (!sta && ftype != PLINK_OPEN) {
|
|
mpl_dbg("Mesh plink: cls or cnf from unknown peer\n");
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
|
|
if (sta && sta->plink_state == PLINK_BLOCKED) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
|
|
/* Now we will figure out the appropriate event... */
|
|
event = PLINK_UNDEFINED;
|
|
if (ftype != PLINK_CLOSE && (!mesh_matches_local(&elems, sdata))) {
|
|
switch (ftype) {
|
|
case PLINK_OPEN:
|
|
event = OPN_RJCT;
|
|
break;
|
|
case PLINK_CONFIRM:
|
|
event = CNF_RJCT;
|
|
break;
|
|
case PLINK_CLOSE:
|
|
/* avoid warning */
|
|
break;
|
|
}
|
|
spin_lock_bh(&sta->lock);
|
|
} else if (!sta) {
|
|
/* ftype == PLINK_OPEN */
|
|
u32 rates;
|
|
|
|
rcu_read_unlock();
|
|
|
|
if (!mesh_plink_free_count(sdata)) {
|
|
mpl_dbg("Mesh plink error: no more free plinks\n");
|
|
return;
|
|
}
|
|
|
|
rates = ieee80211_sta_get_rates(local, &elems, rx_status->band);
|
|
sta = mesh_plink_alloc(sdata, mgmt->sa, rates);
|
|
if (!sta) {
|
|
mpl_dbg("Mesh plink error: plink table full\n");
|
|
return;
|
|
}
|
|
if (sta_info_insert_rcu(sta)) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
event = OPN_ACPT;
|
|
spin_lock_bh(&sta->lock);
|
|
} else {
|
|
spin_lock_bh(&sta->lock);
|
|
switch (ftype) {
|
|
case PLINK_OPEN:
|
|
if (!mesh_plink_free_count(sdata) ||
|
|
(sta->plid && sta->plid != plid))
|
|
event = OPN_IGNR;
|
|
else
|
|
event = OPN_ACPT;
|
|
break;
|
|
case PLINK_CONFIRM:
|
|
if (!mesh_plink_free_count(sdata) ||
|
|
(sta->llid != llid || sta->plid != plid))
|
|
event = CNF_IGNR;
|
|
else
|
|
event = CNF_ACPT;
|
|
break;
|
|
case PLINK_CLOSE:
|
|
if (sta->plink_state == PLINK_ESTAB)
|
|
/* 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");
|
|
spin_unlock_bh(&sta->lock);
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
}
|
|
|
|
mpl_dbg("Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n",
|
|
mgmt->sa, mplstates[sta->plink_state],
|
|
le16_to_cpu(sta->llid), le16_to_cpu(sta->plid),
|
|
event);
|
|
reason = 0;
|
|
switch (sta->plink_state) {
|
|
/* spin_unlock as soon as state is updated at each case */
|
|
case PLINK_LISTEN:
|
|
switch (event) {
|
|
case CLS_ACPT:
|
|
mesh_plink_fsm_restart(sta);
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
case OPN_ACPT:
|
|
sta->plink_state = PLINK_OPN_RCVD;
|
|
sta->plid = plid;
|
|
get_random_bytes(&llid, 2);
|
|
sta->llid = llid;
|
|
mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_OPEN, sta->sta.addr, llid,
|
|
0, 0);
|
|
mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr,
|
|
llid, plid, 0);
|
|
break;
|
|
default:
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PLINK_OPN_SNT:
|
|
switch (event) {
|
|
case OPN_RJCT:
|
|
case CNF_RJCT:
|
|
reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
|
|
case CLS_ACPT:
|
|
if (!reason)
|
|
reason = cpu_to_le16(MESH_CLOSE_RCVD);
|
|
sta->reason = reason;
|
|
sta->plink_state = PLINK_HOLDING;
|
|
if (!mod_plink_timer(sta,
|
|
dot11MeshHoldingTimeout(sdata)))
|
|
sta->ignore_plink_timer = true;
|
|
|
|
llid = sta->llid;
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
|
|
plid, reason);
|
|
break;
|
|
case OPN_ACPT:
|
|
/* retry timer is left untouched */
|
|
sta->plink_state = PLINK_OPN_RCVD;
|
|
sta->plid = plid;
|
|
llid = sta->llid;
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
|
|
plid, 0);
|
|
break;
|
|
case CNF_ACPT:
|
|
sta->plink_state = PLINK_CNF_RCVD;
|
|
if (!mod_plink_timer(sta,
|
|
dot11MeshConfirmTimeout(sdata)))
|
|
sta->ignore_plink_timer = true;
|
|
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
default:
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PLINK_OPN_RCVD:
|
|
switch (event) {
|
|
case OPN_RJCT:
|
|
case CNF_RJCT:
|
|
reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
|
|
case CLS_ACPT:
|
|
if (!reason)
|
|
reason = cpu_to_le16(MESH_CLOSE_RCVD);
|
|
sta->reason = reason;
|
|
sta->plink_state = PLINK_HOLDING;
|
|
if (!mod_plink_timer(sta,
|
|
dot11MeshHoldingTimeout(sdata)))
|
|
sta->ignore_plink_timer = true;
|
|
|
|
llid = sta->llid;
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
|
|
plid, reason);
|
|
break;
|
|
case OPN_ACPT:
|
|
llid = sta->llid;
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
|
|
plid, 0);
|
|
break;
|
|
case CNF_ACPT:
|
|
del_timer(&sta->plink_timer);
|
|
sta->plink_state = PLINK_ESTAB;
|
|
mesh_plink_inc_estab_count(sdata);
|
|
spin_unlock_bh(&sta->lock);
|
|
mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
|
|
sta->sta.addr);
|
|
break;
|
|
default:
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PLINK_CNF_RCVD:
|
|
switch (event) {
|
|
case OPN_RJCT:
|
|
case CNF_RJCT:
|
|
reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
|
|
case CLS_ACPT:
|
|
if (!reason)
|
|
reason = cpu_to_le16(MESH_CLOSE_RCVD);
|
|
sta->reason = reason;
|
|
sta->plink_state = PLINK_HOLDING;
|
|
if (!mod_plink_timer(sta,
|
|
dot11MeshHoldingTimeout(sdata)))
|
|
sta->ignore_plink_timer = true;
|
|
|
|
llid = sta->llid;
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
|
|
plid, reason);
|
|
break;
|
|
case OPN_ACPT:
|
|
del_timer(&sta->plink_timer);
|
|
sta->plink_state = PLINK_ESTAB;
|
|
mesh_plink_inc_estab_count(sdata);
|
|
spin_unlock_bh(&sta->lock);
|
|
mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
|
|
sta->sta.addr);
|
|
mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
|
|
plid, 0);
|
|
break;
|
|
default:
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PLINK_ESTAB:
|
|
switch (event) {
|
|
case CLS_ACPT:
|
|
reason = cpu_to_le16(MESH_CLOSE_RCVD);
|
|
sta->reason = reason;
|
|
__mesh_plink_deactivate(sta);
|
|
sta->plink_state = PLINK_HOLDING;
|
|
llid = sta->llid;
|
|
mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
|
|
plid, reason);
|
|
break;
|
|
case OPN_ACPT:
|
|
llid = sta->llid;
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
|
|
plid, 0);
|
|
break;
|
|
default:
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
}
|
|
break;
|
|
case PLINK_HOLDING:
|
|
switch (event) {
|
|
case CLS_ACPT:
|
|
if (del_timer(&sta->plink_timer))
|
|
sta->ignore_plink_timer = 1;
|
|
mesh_plink_fsm_restart(sta);
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
case OPN_ACPT:
|
|
case CNF_ACPT:
|
|
case OPN_RJCT:
|
|
case CNF_RJCT:
|
|
llid = sta->llid;
|
|
reason = sta->reason;
|
|
spin_unlock_bh(&sta->lock);
|
|
mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr,
|
|
llid, plid, reason);
|
|
break;
|
|
default:
|
|
spin_unlock_bh(&sta->lock);
|
|
}
|
|
break;
|
|
default:
|
|
/* should not get here, PLINK_BLOCKED is dealt with at the
|
|
* beginning of the function
|
|
*/
|
|
spin_unlock_bh(&sta->lock);
|
|
break;
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
}
|