Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1 | /* |
Rui Paulo | 264d9b7 | 2009-11-09 23:46:58 +0000 | [diff] [blame] | 2 | * Copyright (c) 2008, 2009 open80211s Ltd. |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 3 | * Author: Luis Carlos Cobo <luisca@cozybit.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | */ |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 9 | #include <linux/gfp.h> |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 10 | #include <linux/kernel.h> |
| 11 | #include <linux/random.h> |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 12 | #include "ieee80211_i.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 13 | #include "rate.h" |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 14 | #include "mesh.h" |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 15 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 16 | #define PLINK_GET_LLID(p) (p + 2) |
| 17 | #define PLINK_GET_PLID(p) (p + 4) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 18 | |
| 19 | #define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \ |
| 20 | jiffies + HZ * t / 1000)) |
| 21 | |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 22 | #define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries) |
| 23 | #define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout) |
| 24 | #define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout) |
| 25 | #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout) |
| 26 | #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 27 | |
Ashok Nagarajan | 3d4f969 | 2012-03-06 12:48:30 -0800 | [diff] [blame] | 28 | /* We only need a valid sta if user configured a minimum rssi_threshold. */ |
| 29 | #define rssi_threshold_check(sta, sdata) \ |
Ashok Nagarajan | 5533513 | 2012-02-28 17:04:08 -0800 | [diff] [blame] | 30 | (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\ |
Ashok Nagarajan | 3d4f969 | 2012-03-06 12:48:30 -0800 | [diff] [blame] | 31 | (sta && (s8) -ewma_read(&sta->avg_signal) > \ |
| 32 | sdata->u.mesh.mshcfg.rssi_threshold)) |
Ashok Nagarajan | 5533513 | 2012-02-28 17:04:08 -0800 | [diff] [blame] | 33 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 34 | enum plink_event { |
| 35 | PLINK_UNDEFINED, |
| 36 | OPN_ACPT, |
| 37 | OPN_RJCT, |
| 38 | OPN_IGNR, |
| 39 | CNF_ACPT, |
| 40 | CNF_RJCT, |
| 41 | CNF_IGNR, |
| 42 | CLS_ACPT, |
| 43 | CLS_IGNR |
| 44 | }; |
| 45 | |
Thomas Pedersen | ba4a14e | 2011-09-20 13:43:32 -0700 | [diff] [blame] | 46 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
| 47 | enum ieee80211_self_protected_actioncode action, |
| 48 | u8 *da, __le16 llid, __le16 plid, __le16 reason); |
| 49 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 50 | static inline |
| 51 | void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata) |
| 52 | { |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 53 | atomic_inc(&sdata->u.mesh.mshstats.estab_plinks); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 54 | mesh_accept_plinks_update(sdata); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | static inline |
| 58 | void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata) |
| 59 | { |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 60 | atomic_dec(&sdata->u.mesh.mshstats.estab_plinks); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 61 | mesh_accept_plinks_update(sdata); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | /** |
| 65 | * mesh_plink_fsm_restart - restart a mesh peer link finite state machine |
| 66 | * |
Rui Paulo | 23c7a29 | 2009-11-09 23:46:42 +0000 | [diff] [blame] | 67 | * @sta: mesh peer link to restart |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 68 | * |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 69 | * Locking: this function must be called holding sta->lock |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 70 | */ |
| 71 | static inline void mesh_plink_fsm_restart(struct sta_info *sta) |
| 72 | { |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 73 | sta->plink_state = NL80211_PLINK_LISTEN; |
Luis Carlos Cobo | 37659ff | 2008-02-29 12:13:38 -0800 | [diff] [blame] | 74 | sta->llid = sta->plid = sta->reason = 0; |
| 75 | sta->plink_retries = 0; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 76 | } |
| 77 | |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 78 | /* |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 79 | * Allocate mesh sta entry and insert into station table |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 80 | */ |
Johannes Berg | 03e4497 | 2008-02-27 09:56:40 +0100 | [diff] [blame] | 81 | static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata, |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 82 | u8 *hw_addr) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 83 | { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 84 | struct sta_info *sta; |
| 85 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 86 | if (sdata->local->num_sta >= MESH_MAX_PLINKS) |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 87 | return NULL; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 88 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 89 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 90 | if (!sta) |
| 91 | return NULL; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 92 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 93 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
| 94 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); |
| 95 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 96 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 97 | set_sta_flag(sta, WLAN_STA_WME); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 98 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 99 | return sta; |
| 100 | } |
| 101 | |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 102 | /** |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 103 | * mesh_set_ht_prot_mode - set correct HT protection mode |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 104 | * |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 105 | * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT |
| 106 | * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT |
| 107 | * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is |
| 108 | * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode |
| 109 | * is selected if all peers in our 20/40MHz MBSS support HT and atleast one |
| 110 | * HT20 peer is present. Otherwise no-protection mode is selected. |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 111 | */ |
| 112 | static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) |
| 113 | { |
| 114 | struct ieee80211_local *local = sdata->local; |
| 115 | struct sta_info *sta; |
| 116 | u32 changed = 0; |
| 117 | u16 ht_opmode; |
| 118 | bool non_ht_sta = false, ht20_sta = false; |
| 119 | |
Johannes Berg | 466f310 | 2012-07-25 13:51:49 +0200 | [diff] [blame^] | 120 | if (sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 121 | return 0; |
| 122 | |
| 123 | rcu_read_lock(); |
| 124 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 125 | if (sdata != sta->sdata || |
| 126 | sta->plink_state != NL80211_PLINK_ESTAB) |
| 127 | continue; |
| 128 | |
| 129 | switch (sta->ch_type) { |
| 130 | case NL80211_CHAN_NO_HT: |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 131 | mpl_dbg(sdata, |
| 132 | "mesh_plink %pM: nonHT sta (%pM) is present\n", |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 133 | sdata->vif.addr, sta->sta.addr); |
| 134 | non_ht_sta = true; |
| 135 | goto out; |
| 136 | case NL80211_CHAN_HT20: |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 137 | mpl_dbg(sdata, |
| 138 | "mesh_plink %pM: HT20 sta (%pM) is present\n", |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 139 | sdata->vif.addr, sta->sta.addr); |
| 140 | ht20_sta = true; |
| 141 | default: |
| 142 | break; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 143 | } |
| 144 | } |
| 145 | out: |
| 146 | rcu_read_unlock(); |
| 147 | |
| 148 | if (non_ht_sta) |
| 149 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED; |
Johannes Berg | 466f310 | 2012-07-25 13:51:49 +0200 | [diff] [blame^] | 150 | else if (ht20_sta && |
| 151 | sdata->vif.bss_conf.channel_type > NL80211_CHAN_HT20) |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 152 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ; |
| 153 | else |
| 154 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; |
| 155 | |
| 156 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { |
| 157 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
Ashok Nagarajan | 70c33ea | 2012-04-30 14:20:32 -0700 | [diff] [blame] | 158 | sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 159 | changed = BSS_CHANGED_HT; |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 160 | mpl_dbg(sdata, |
| 161 | "mesh_plink %pM: protection mode changed to %d\n", |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 162 | sdata->vif.addr, ht_opmode); |
| 163 | } |
| 164 | |
| 165 | return changed; |
| 166 | } |
| 167 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 168 | /** |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 169 | * __mesh_plink_deactivate - deactivate mesh peer link |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 170 | * |
| 171 | * @sta: mesh peer link to deactivate |
| 172 | * |
| 173 | * All mesh paths with this peer as next hop will be flushed |
| 174 | * |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 175 | * Locking: the caller must hold sta->lock |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 176 | */ |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 177 | static bool __mesh_plink_deactivate(struct sta_info *sta) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 178 | { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 179 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 180 | bool deactivated = false; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 181 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 182 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 183 | mesh_plink_dec_estab_count(sdata); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 184 | deactivated = true; |
| 185 | } |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 186 | sta->plink_state = NL80211_PLINK_BLOCKED; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 187 | mesh_path_flush_by_nexthop(sta); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 188 | |
| 189 | return deactivated; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 190 | } |
| 191 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 192 | /** |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 193 | * mesh_plink_deactivate - deactivate mesh peer link |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 194 | * |
| 195 | * @sta: mesh peer link to deactivate |
| 196 | * |
| 197 | * All mesh paths with this peer as next hop will be flushed |
| 198 | */ |
| 199 | void mesh_plink_deactivate(struct sta_info *sta) |
| 200 | { |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 201 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 202 | bool deactivated; |
| 203 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 204 | spin_lock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 205 | deactivated = __mesh_plink_deactivate(sta); |
Thomas Pedersen | ba4a14e | 2011-09-20 13:43:32 -0700 | [diff] [blame] | 206 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
| 207 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 208 | sta->sta.addr, sta->llid, sta->plid, |
| 209 | sta->reason); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 210 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 211 | |
| 212 | if (deactivated) |
| 213 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 214 | } |
| 215 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 216 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 217 | enum ieee80211_self_protected_actioncode action, |
| 218 | u8 *da, __le16 llid, __le16 plid, __le16 reason) { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 219 | struct ieee80211_local *local = sdata->local; |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 220 | struct sk_buff *skb; |
Thomas Pedersen | e7570df | 2012-08-03 12:21:34 -0700 | [diff] [blame] | 221 | struct ieee80211_tx_info *info; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 222 | struct ieee80211_mgmt *mgmt; |
| 223 | bool include_plid = false; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 224 | u16 peering_proto = 0; |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 225 | u8 *pos, ie_len = 4; |
| 226 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + |
| 227 | sizeof(mgmt->u.action.u.self_prot); |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 228 | int err = -ENOMEM; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 229 | |
Javier Cardona | 65e8b0c | 2012-01-17 18:17:46 -0800 | [diff] [blame] | 230 | skb = dev_alloc_skb(local->tx_headroom + |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 231 | hdr_len + |
| 232 | 2 + /* capability info */ |
| 233 | 2 + /* AID */ |
| 234 | 2 + 8 + /* supported rates */ |
| 235 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + |
| 236 | 2 + sdata->u.mesh.mesh_id_len + |
| 237 | 2 + sizeof(struct ieee80211_meshconf_ie) + |
Thomas Pedersen | 176f360 | 2011-10-26 14:47:27 -0700 | [diff] [blame] | 238 | 2 + sizeof(struct ieee80211_ht_cap) + |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 239 | 2 + sizeof(struct ieee80211_ht_operation) + |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 240 | 2 + 8 + /* peering IE */ |
| 241 | sdata->u.mesh.ie_len); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 242 | if (!skb) |
| 243 | return -1; |
Thomas Pedersen | e7570df | 2012-08-03 12:21:34 -0700 | [diff] [blame] | 244 | info = IEEE80211_SKB_CB(skb); |
Javier Cardona | 65e8b0c | 2012-01-17 18:17:46 -0800 | [diff] [blame] | 245 | skb_reserve(skb, local->tx_headroom); |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 246 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
| 247 | memset(mgmt, 0, hdr_len); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 248 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 249 | IEEE80211_STYPE_ACTION); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 250 | memcpy(mgmt->da, da, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 251 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
Javier Cardona | 915b5c5 | 2011-05-03 16:57:10 -0700 | [diff] [blame] | 252 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 253 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
| 254 | mgmt->u.action.u.self_prot.action_code = action; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 255 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 256 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
| 257 | /* capability info */ |
| 258 | pos = skb_put(skb, 2); |
| 259 | memset(pos, 0, 2); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 260 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 261 | /* AID */ |
| 262 | pos = skb_put(skb, 2); |
Rui Paulo | 77fa76b | 2009-11-09 23:46:52 +0000 | [diff] [blame] | 263 | memcpy(pos + 2, &plid, 2); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 264 | } |
Johannes Berg | 6b77863 | 2012-07-23 14:53:27 +0200 | [diff] [blame] | 265 | if (ieee80211_add_srates_ie(sdata, skb, true, |
| 266 | local->oper_channel->band) || |
| 267 | ieee80211_add_ext_srates_ie(sdata, skb, true, |
| 268 | local->oper_channel->band) || |
Thomas Pedersen | 082ebb0 | 2011-08-11 19:35:10 -0700 | [diff] [blame] | 269 | mesh_add_rsn_ie(skb, sdata) || |
| 270 | mesh_add_meshid_ie(skb, sdata) || |
| 271 | mesh_add_meshconf_ie(skb, sdata)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 272 | goto free; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 273 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
Thomas Pedersen | e7570df | 2012-08-03 12:21:34 -0700 | [diff] [blame] | 274 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 275 | if (mesh_add_meshid_ie(skb, sdata)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 276 | goto free; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 277 | } |
| 278 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 279 | /* Add Mesh Peering Management element */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 280 | switch (action) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 281 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 282 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 283 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 284 | ie_len += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 285 | include_plid = true; |
| 286 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 287 | case WLAN_SP_MESH_PEERING_CLOSE: |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 288 | if (plid) { |
| 289 | ie_len += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 290 | include_plid = true; |
| 291 | } |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 292 | ie_len += 2; /* reason code */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 293 | break; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 294 | default: |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 295 | err = -EINVAL; |
| 296 | goto free; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 297 | } |
| 298 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 299 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 300 | goto free; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 301 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 302 | pos = skb_put(skb, 2 + ie_len); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 303 | *pos++ = WLAN_EID_PEER_MGMT; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 304 | *pos++ = ie_len; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 305 | memcpy(pos, &peering_proto, 2); |
| 306 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 307 | memcpy(pos, &llid, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 308 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 309 | if (include_plid) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 310 | memcpy(pos, &plid, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 311 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 312 | } |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 313 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 314 | memcpy(pos, &reason, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 315 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 316 | } |
Thomas Pedersen | 176f360 | 2011-10-26 14:47:27 -0700 | [diff] [blame] | 317 | |
| 318 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
| 319 | if (mesh_add_ht_cap_ie(skb, sdata) || |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 320 | mesh_add_ht_oper_ie(skb, sdata)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 321 | goto free; |
Thomas Pedersen | 176f360 | 2011-10-26 14:47:27 -0700 | [diff] [blame] | 322 | } |
| 323 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 324 | if (mesh_add_vendor_ies(skb, sdata)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 325 | goto free; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 326 | |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 327 | ieee80211_tx_skb(sdata, skb); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 328 | return 0; |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 329 | free: |
| 330 | kfree_skb(skb); |
| 331 | return err; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 332 | } |
| 333 | |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 334 | /** |
| 335 | * mesh_peer_init - initialize new mesh peer and return resulting sta_info |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 336 | * |
| 337 | * @sdata: local meshif |
| 338 | * @addr: peer's address |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 339 | * @elems: IEs from beacon or mesh peering frame |
| 340 | * |
| 341 | * call under RCU |
| 342 | */ |
| 343 | static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 344 | u8 *addr, |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 345 | struct ieee802_11_elems *elems) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 346 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 347 | struct ieee80211_local *local = sdata->local; |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 348 | enum ieee80211_band band = local->oper_channel->band; |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 349 | struct ieee80211_supported_band *sband; |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 350 | u32 rates, basic_rates = 0; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 351 | struct sta_info *sta; |
Thomas Pedersen | e87278e | 2012-04-26 15:01:06 -0700 | [diff] [blame] | 352 | bool insert = false; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 353 | |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 354 | sband = local->hw.wiphy->bands[band]; |
| 355 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 356 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 357 | sta = sta_info_get(sdata, addr); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 358 | if (!sta) { |
Thomas Pedersen | f5c5681 | 2012-05-03 15:06:09 -0700 | [diff] [blame] | 359 | /* Userspace handles peer allocation when security is enabled */ |
| 360 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) { |
| 361 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, |
| 362 | elems->ie_start, |
| 363 | elems->total_len, |
| 364 | GFP_ATOMIC); |
| 365 | return NULL; |
| 366 | } |
| 367 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 368 | sta = mesh_plink_alloc(sdata, addr); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 369 | if (!sta) |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 370 | return NULL; |
Thomas Pedersen | e87278e | 2012-04-26 15:01:06 -0700 | [diff] [blame] | 371 | insert = true; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 372 | } |
| 373 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 374 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 375 | sta->last_rx = jiffies; |
Chun-Yeow Yeoh | bae35d9 | 2012-07-24 11:52:35 +0800 | [diff] [blame] | 376 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
| 377 | spin_unlock_bh(&sta->lock); |
| 378 | return sta; |
| 379 | } |
| 380 | |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 381 | sta->sta.supp_rates[band] = rates; |
Thomas Pedersen | e76781e | 2012-04-18 19:24:13 -0700 | [diff] [blame] | 382 | if (elems->ht_cap_elem && |
Johannes Berg | 466f310 | 2012-07-25 13:51:49 +0200 | [diff] [blame^] | 383 | sdata->vif.bss_conf.channel_type != NL80211_CHAN_NO_HT) |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 384 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
| 385 | elems->ht_cap_elem, |
| 386 | &sta->sta.ht_cap); |
| 387 | else |
| 388 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); |
| 389 | |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 390 | if (elems->ht_operation) { |
Thomas Pedersen | c7d2582 | 2012-04-26 15:01:07 -0700 | [diff] [blame] | 391 | if (!(elems->ht_operation->ht_param & |
| 392 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) |
| 393 | sta->sta.ht_cap.cap &= |
| 394 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 395 | sta->ch_type = |
| 396 | ieee80211_ht_oper_to_channel_type(elems->ht_operation); |
| 397 | } |
Thomas Pedersen | c7d2582 | 2012-04-26 15:01:07 -0700 | [diff] [blame] | 398 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 399 | rate_control_rate_init(sta); |
| 400 | spin_unlock_bh(&sta->lock); |
| 401 | |
Thomas Pedersen | e87278e | 2012-04-26 15:01:06 -0700 | [diff] [blame] | 402 | if (insert && sta_info_insert(sta)) |
| 403 | return NULL; |
| 404 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 405 | return sta; |
| 406 | } |
| 407 | |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 408 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
| 409 | u8 *hw_addr, |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 410 | struct ieee802_11_elems *elems) |
| 411 | { |
| 412 | struct sta_info *sta; |
| 413 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 414 | rcu_read_lock(); |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 415 | sta = mesh_peer_init(sdata, hw_addr, elems); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 416 | if (!sta) |
| 417 | goto out; |
| 418 | |
Javier Cardona | 1570ca5 | 2011-04-07 15:08:35 -0700 | [diff] [blame] | 419 | if (mesh_peer_accepts_plinks(elems) && |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 420 | sta->plink_state == NL80211_PLINK_LISTEN && |
| 421 | sdata->u.mesh.accepting_plinks && |
| 422 | sdata->u.mesh.mshcfg.auto_open_plinks && |
| 423 | rssi_threshold_check(sta, sdata)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 424 | mesh_plink_open(sta); |
| 425 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 426 | out: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 427 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 428 | } |
| 429 | |
| 430 | static void mesh_plink_timer(unsigned long data) |
| 431 | { |
| 432 | struct sta_info *sta; |
| 433 | __le16 llid, plid, reason; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 434 | struct ieee80211_sub_if_data *sdata; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 435 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 436 | /* |
| 437 | * This STA is valid because sta_info_destroy() will |
| 438 | * del_timer_sync() this timer after having made sure |
| 439 | * it cannot be readded (by deleting the plink.) |
| 440 | */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 441 | sta = (struct sta_info *) data; |
| 442 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 443 | if (sta->sdata->local->quiescing) { |
| 444 | sta->plink_timer_was_running = true; |
| 445 | return; |
| 446 | } |
| 447 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 448 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 449 | if (sta->ignore_plink_timer) { |
| 450 | sta->ignore_plink_timer = false; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 451 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 452 | return; |
| 453 | } |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 454 | mpl_dbg(sta->sdata, |
| 455 | "Mesh plink timer for %pM fired on state %d\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 456 | sta->sta.addr, sta->plink_state); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 457 | reason = 0; |
| 458 | llid = sta->llid; |
| 459 | plid = sta->plid; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 460 | sdata = sta->sdata; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 461 | |
| 462 | switch (sta->plink_state) { |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 463 | case NL80211_PLINK_OPN_RCVD: |
| 464 | case NL80211_PLINK_OPN_SNT: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 465 | /* retry timer */ |
| 466 | if (sta->plink_retries < dot11MeshMaxRetries(sdata)) { |
| 467 | u32 rand; |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 468 | mpl_dbg(sta->sdata, |
| 469 | "Mesh plink for %pM (retry, timeout): %d %d\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 470 | sta->sta.addr, sta->plink_retries, |
| 471 | sta->plink_timeout); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 472 | get_random_bytes(&rand, sizeof(u32)); |
| 473 | sta->plink_timeout = sta->plink_timeout + |
| 474 | rand % sta->plink_timeout; |
| 475 | ++sta->plink_retries; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 476 | mod_plink_timer(sta, sta->plink_timeout); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 477 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 478 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
| 479 | sta->sta.addr, llid, 0, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 480 | break; |
| 481 | } |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 482 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 483 | /* fall through on else */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 484 | case NL80211_PLINK_CNF_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 485 | /* confirm timer */ |
| 486 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 487 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 488 | sta->plink_state = NL80211_PLINK_HOLDING; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 489 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 490 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 491 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 492 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 493 | break; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 494 | case NL80211_PLINK_HOLDING: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 495 | /* holding timer */ |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 496 | del_timer(&sta->plink_timer); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 497 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 498 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 499 | break; |
| 500 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 501 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 502 | break; |
| 503 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 504 | } |
| 505 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 506 | #ifdef CONFIG_PM |
| 507 | void mesh_plink_quiesce(struct sta_info *sta) |
| 508 | { |
| 509 | if (del_timer_sync(&sta->plink_timer)) |
| 510 | sta->plink_timer_was_running = true; |
| 511 | } |
| 512 | |
| 513 | void mesh_plink_restart(struct sta_info *sta) |
| 514 | { |
| 515 | if (sta->plink_timer_was_running) { |
| 516 | add_timer(&sta->plink_timer); |
| 517 | sta->plink_timer_was_running = false; |
| 518 | } |
| 519 | } |
| 520 | #endif |
| 521 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 522 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
| 523 | { |
| 524 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); |
| 525 | sta->plink_timer.data = (unsigned long) sta; |
| 526 | sta->plink_timer.function = mesh_plink_timer; |
| 527 | sta->plink_timeout = timeout; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 528 | add_timer(&sta->plink_timer); |
| 529 | } |
| 530 | |
| 531 | int mesh_plink_open(struct sta_info *sta) |
| 532 | { |
| 533 | __le16 llid; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 534 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 535 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 536 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
Javier Cardona | 53e8051 | 2011-04-07 15:08:32 -0700 | [diff] [blame] | 537 | return -EPERM; |
| 538 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 539 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 540 | get_random_bytes(&llid, 2); |
| 541 | sta->llid = llid; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 542 | if (sta->plink_state != NL80211_PLINK_LISTEN) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 543 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 544 | return -EBUSY; |
| 545 | } |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 546 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 547 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 548 | spin_unlock_bh(&sta->lock); |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 549 | mpl_dbg(sdata, |
| 550 | "Mesh plink: starting establishment with %pM\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 551 | sta->sta.addr); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 552 | |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 553 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 554 | sta->sta.addr, llid, 0, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | void mesh_plink_block(struct sta_info *sta) |
| 558 | { |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 559 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 560 | bool deactivated; |
| 561 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 562 | spin_lock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 563 | deactivated = __mesh_plink_deactivate(sta); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 564 | sta->plink_state = NL80211_PLINK_BLOCKED; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 565 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 566 | |
| 567 | if (deactivated) |
| 568 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 569 | } |
| 570 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 571 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 572 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 573 | size_t len, struct ieee80211_rx_status *rx_status) |
| 574 | { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 575 | struct ieee802_11_elems elems; |
| 576 | struct sta_info *sta; |
| 577 | enum plink_event event; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 578 | enum ieee80211_self_protected_actioncode ftype; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 579 | size_t baselen; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 580 | bool matches_local = true; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 581 | u8 ie_len; |
| 582 | u8 *baseaddr; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 583 | u32 changed = 0; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 584 | __le16 plid, llid, reason; |
Rui Paulo | 1460dd1 | 2009-11-09 23:46:48 +0000 | [diff] [blame] | 585 | static const char *mplstates[] = { |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 586 | [NL80211_PLINK_LISTEN] = "LISTEN", |
| 587 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", |
| 588 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", |
| 589 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", |
| 590 | [NL80211_PLINK_ESTAB] = "ESTAB", |
| 591 | [NL80211_PLINK_HOLDING] = "HOLDING", |
| 592 | [NL80211_PLINK_BLOCKED] = "BLOCKED" |
Rui Paulo | 1460dd1 | 2009-11-09 23:46:48 +0000 | [diff] [blame] | 593 | }; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 594 | |
Johannes Berg | 9c80d3d | 2008-09-08 15:41:59 +0200 | [diff] [blame] | 595 | /* need action_code, aux */ |
| 596 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) |
| 597 | return; |
| 598 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 599 | if (is_multicast_ether_addr(mgmt->da)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 600 | mpl_dbg(sdata, |
| 601 | "Mesh plink: ignore frame from multicast address\n"); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 602 | return; |
| 603 | } |
| 604 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 605 | baseaddr = mgmt->u.action.u.self_prot.variable; |
| 606 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; |
| 607 | if (mgmt->u.action.u.self_prot.action_code == |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 608 | WLAN_SP_MESH_PEERING_CONFIRM) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 609 | baseaddr += 4; |
David Woo | 70bdb6b | 2009-08-12 11:03:44 -0700 | [diff] [blame] | 610 | baselen += 4; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 611 | } |
| 612 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 613 | if (!elems.peering) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 614 | mpl_dbg(sdata, |
| 615 | "Mesh plink: missing necessary peer link ie\n"); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 616 | return; |
| 617 | } |
Javier Cardona | b130e5c | 2011-05-03 16:57:07 -0700 | [diff] [blame] | 618 | if (elems.rsn_len && |
| 619 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 620 | mpl_dbg(sdata, |
| 621 | "Mesh plink: can't establish link with secure peer\n"); |
Javier Cardona | 5cff5e0 | 2011-04-07 15:08:29 -0700 | [diff] [blame] | 622 | return; |
| 623 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 624 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 625 | ftype = mgmt->u.action.u.self_prot.action_code; |
| 626 | ie_len = elems.peering_len; |
| 627 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || |
| 628 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || |
| 629 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 |
| 630 | && ie_len != 8)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 631 | mpl_dbg(sdata, |
| 632 | "Mesh plink: incorrect plink ie length %d %d\n", |
| 633 | ftype, ie_len); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 634 | return; |
| 635 | } |
| 636 | |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 637 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
| 638 | (!elems.mesh_id || !elems.mesh_config)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 639 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 640 | return; |
| 641 | } |
| 642 | /* Note the lines below are correct, the llid in the frame is the plid |
| 643 | * from the point of view of this host. |
| 644 | */ |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 645 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 646 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 647 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
| 648 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 649 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 650 | rcu_read_lock(); |
| 651 | |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 652 | sta = sta_info_get(sdata, mgmt->sa); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 653 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 654 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 655 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 656 | return; |
| 657 | } |
| 658 | |
Ashok Nagarajan | 5533513 | 2012-02-28 17:04:08 -0800 | [diff] [blame] | 659 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
Ashok Nagarajan | 3d4f969 | 2012-03-06 12:48:30 -0800 | [diff] [blame] | 660 | !rssi_threshold_check(sta, sdata)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 661 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
Ashok Nagarajan | 3d4f969 | 2012-03-06 12:48:30 -0800 | [diff] [blame] | 662 | mgmt->sa); |
Ashok Nagarajan | 5533513 | 2012-02-28 17:04:08 -0800 | [diff] [blame] | 663 | rcu_read_unlock(); |
| 664 | return; |
| 665 | } |
| 666 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 667 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 668 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
Javier Cardona | 53e8051 | 2011-04-07 15:08:32 -0700 | [diff] [blame] | 669 | rcu_read_unlock(); |
| 670 | return; |
| 671 | } |
| 672 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 673 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 674 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 675 | return; |
| 676 | } |
| 677 | |
| 678 | /* Now we will figure out the appropriate event... */ |
| 679 | event = PLINK_UNDEFINED; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 680 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 681 | !mesh_matches_local(sdata, &elems)) { |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 682 | matches_local = false; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 683 | switch (ftype) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 684 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 685 | event = OPN_RJCT; |
| 686 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 687 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 688 | event = CNF_RJCT; |
| 689 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 690 | default: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 691 | break; |
| 692 | } |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 693 | } |
| 694 | |
| 695 | if (!sta && !matches_local) { |
| 696 | rcu_read_unlock(); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 697 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 698 | llid = 0; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 699 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 700 | mgmt->sa, llid, plid, reason); |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 701 | return; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 702 | } else if (!sta) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 703 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 704 | if (!mesh_plink_free_count(sdata)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 705 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 706 | rcu_read_unlock(); |
| 707 | return; |
| 708 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 709 | event = OPN_ACPT; |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 710 | } else if (matches_local) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 711 | switch (ftype) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 712 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 713 | if (!mesh_plink_free_count(sdata) || |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 714 | (sta->plid && sta->plid != plid)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 715 | event = OPN_IGNR; |
| 716 | else |
| 717 | event = OPN_ACPT; |
| 718 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 719 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 720 | if (!mesh_plink_free_count(sdata) || |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 721 | (sta->llid != llid || sta->plid != plid)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 722 | event = CNF_IGNR; |
| 723 | else |
| 724 | event = CNF_ACPT; |
| 725 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 726 | case WLAN_SP_MESH_PEERING_CLOSE: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 727 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 728 | /* Do not check for llid or plid. This does not |
| 729 | * follow the standard but since multiple plinks |
| 730 | * per sta are not supported, it is necessary in |
| 731 | * order to avoid a livelock when MP A sees an |
| 732 | * establish peer link to MP B but MP B does not |
| 733 | * see it. This can be caused by a timeout in |
| 734 | * B's peer link establishment or B beign |
| 735 | * restarted. |
| 736 | */ |
| 737 | event = CLS_ACPT; |
| 738 | else if (sta->plid != plid) |
| 739 | event = CLS_IGNR; |
| 740 | else if (ie_len == 7 && sta->llid != llid) |
| 741 | event = CLS_IGNR; |
| 742 | else |
| 743 | event = CLS_ACPT; |
| 744 | break; |
| 745 | default: |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 746 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 747 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 748 | return; |
| 749 | } |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | if (event == OPN_ACPT) { |
| 753 | /* allocate sta entry if necessary and update info */ |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 754 | sta = mesh_peer_init(sdata, mgmt->sa, &elems); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 755 | if (!sta) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 756 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 757 | rcu_read_unlock(); |
| 758 | return; |
| 759 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 760 | } |
| 761 | |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 762 | mpl_dbg(sdata, |
| 763 | "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", |
Rui Paulo | 1460dd1 | 2009-11-09 23:46:48 +0000 | [diff] [blame] | 764 | mgmt->sa, mplstates[sta->plink_state], |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 765 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
| 766 | event); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 767 | reason = 0; |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 768 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 769 | switch (sta->plink_state) { |
| 770 | /* spin_unlock as soon as state is updated at each case */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 771 | case NL80211_PLINK_LISTEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 772 | switch (event) { |
| 773 | case CLS_ACPT: |
| 774 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 775 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 776 | break; |
| 777 | case OPN_ACPT: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 778 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 779 | sta->plid = plid; |
| 780 | get_random_bytes(&llid, 2); |
| 781 | sta->llid = llid; |
| 782 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 783 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 784 | mesh_plink_frame_tx(sdata, |
| 785 | WLAN_SP_MESH_PEERING_OPEN, |
| 786 | sta->sta.addr, llid, 0, 0); |
| 787 | mesh_plink_frame_tx(sdata, |
| 788 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 789 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 790 | break; |
| 791 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 792 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 793 | break; |
| 794 | } |
| 795 | break; |
| 796 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 797 | case NL80211_PLINK_OPN_SNT: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 798 | switch (event) { |
| 799 | case OPN_RJCT: |
| 800 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 801 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 802 | case CLS_ACPT: |
| 803 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 804 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 805 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 806 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 807 | if (!mod_plink_timer(sta, |
| 808 | dot11MeshHoldingTimeout(sdata))) |
| 809 | sta->ignore_plink_timer = true; |
| 810 | |
| 811 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 812 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 813 | mesh_plink_frame_tx(sdata, |
| 814 | WLAN_SP_MESH_PEERING_CLOSE, |
| 815 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 816 | break; |
| 817 | case OPN_ACPT: |
| 818 | /* retry timer is left untouched */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 819 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 820 | sta->plid = plid; |
| 821 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 822 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 823 | mesh_plink_frame_tx(sdata, |
| 824 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 825 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 826 | break; |
| 827 | case CNF_ACPT: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 828 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 829 | if (!mod_plink_timer(sta, |
| 830 | dot11MeshConfirmTimeout(sdata))) |
| 831 | sta->ignore_plink_timer = true; |
| 832 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 833 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 834 | break; |
| 835 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 836 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 837 | break; |
| 838 | } |
| 839 | break; |
| 840 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 841 | case NL80211_PLINK_OPN_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 842 | switch (event) { |
| 843 | case OPN_RJCT: |
| 844 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 845 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 846 | case CLS_ACPT: |
| 847 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 848 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 849 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 850 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 851 | if (!mod_plink_timer(sta, |
| 852 | dot11MeshHoldingTimeout(sdata))) |
| 853 | sta->ignore_plink_timer = true; |
| 854 | |
| 855 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 856 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 857 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 858 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 859 | break; |
| 860 | case OPN_ACPT: |
| 861 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 862 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 863 | mesh_plink_frame_tx(sdata, |
| 864 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 865 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 866 | break; |
| 867 | case CNF_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 868 | del_timer(&sta->plink_timer); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 869 | sta->plink_state = NL80211_PLINK_ESTAB; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 870 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 871 | mesh_plink_inc_estab_count(sdata); |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 872 | changed |= mesh_set_ht_prot_mode(sdata); |
| 873 | changed |= BSS_CHANGED_BEACON; |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 874 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 875 | sta->sta.addr); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 876 | break; |
| 877 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 878 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 879 | break; |
| 880 | } |
| 881 | break; |
| 882 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 883 | case NL80211_PLINK_CNF_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 884 | switch (event) { |
| 885 | case OPN_RJCT: |
| 886 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 887 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 888 | case CLS_ACPT: |
| 889 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 890 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 891 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 892 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 893 | if (!mod_plink_timer(sta, |
| 894 | dot11MeshHoldingTimeout(sdata))) |
| 895 | sta->ignore_plink_timer = true; |
| 896 | |
| 897 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 898 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 899 | mesh_plink_frame_tx(sdata, |
| 900 | WLAN_SP_MESH_PEERING_CLOSE, |
| 901 | sta->sta.addr, llid, plid, reason); |
Johannes Berg | ff59dc7 | 2008-02-25 10:11:50 +0100 | [diff] [blame] | 902 | break; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 903 | case OPN_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 904 | del_timer(&sta->plink_timer); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 905 | sta->plink_state = NL80211_PLINK_ESTAB; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 906 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 907 | mesh_plink_inc_estab_count(sdata); |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 908 | changed |= mesh_set_ht_prot_mode(sdata); |
| 909 | changed |= BSS_CHANGED_BEACON; |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 910 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 911 | sta->sta.addr); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 912 | mesh_plink_frame_tx(sdata, |
| 913 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 914 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 915 | break; |
| 916 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 917 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 918 | break; |
| 919 | } |
| 920 | break; |
| 921 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 922 | case NL80211_PLINK_ESTAB: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 923 | switch (event) { |
| 924 | case CLS_ACPT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 925 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 926 | sta->reason = reason; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 927 | __mesh_plink_deactivate(sta); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 928 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 929 | llid = sta->llid; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 930 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 931 | spin_unlock_bh(&sta->lock); |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 932 | changed |= mesh_set_ht_prot_mode(sdata); |
| 933 | changed |= BSS_CHANGED_BEACON; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 934 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 935 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 936 | break; |
| 937 | case OPN_ACPT: |
| 938 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 939 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 940 | mesh_plink_frame_tx(sdata, |
| 941 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 942 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 943 | break; |
| 944 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 945 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 946 | break; |
| 947 | } |
| 948 | break; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 949 | case NL80211_PLINK_HOLDING: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 950 | switch (event) { |
| 951 | case CLS_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 952 | if (del_timer(&sta->plink_timer)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 953 | sta->ignore_plink_timer = 1; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 954 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 955 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 956 | break; |
| 957 | case OPN_ACPT: |
| 958 | case CNF_ACPT: |
| 959 | case OPN_RJCT: |
| 960 | case CNF_RJCT: |
| 961 | llid = sta->llid; |
| 962 | reason = sta->reason; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 963 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 964 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 965 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 966 | break; |
| 967 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 968 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 969 | } |
| 970 | break; |
| 971 | default: |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 972 | /* should not get here, PLINK_BLOCKED is dealt with at the |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 973 | * beginning of the function |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 974 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 975 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 976 | break; |
| 977 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 978 | |
| 979 | rcu_read_unlock(); |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 980 | |
| 981 | if (changed) |
| 982 | ieee80211_bss_info_change_notify(sdata, changed); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 983 | } |