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 | |
Ashok Nagarajan | 3d4f969 | 2012-03-06 12:48:30 -0800 | [diff] [blame] | 22 | /* We only need a valid sta if user configured a minimum rssi_threshold. */ |
| 23 | #define rssi_threshold_check(sta, sdata) \ |
Ashok Nagarajan | 5533513 | 2012-02-28 17:04:08 -0800 | [diff] [blame] | 24 | (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\ |
Ashok Nagarajan | 3d4f969 | 2012-03-06 12:48:30 -0800 | [diff] [blame] | 25 | (sta && (s8) -ewma_read(&sta->avg_signal) > \ |
| 26 | sdata->u.mesh.mshcfg.rssi_threshold)) |
Ashok Nagarajan | 5533513 | 2012-02-28 17:04:08 -0800 | [diff] [blame] | 27 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 28 | enum plink_event { |
| 29 | PLINK_UNDEFINED, |
| 30 | OPN_ACPT, |
| 31 | OPN_RJCT, |
| 32 | OPN_IGNR, |
| 33 | CNF_ACPT, |
| 34 | CNF_RJCT, |
| 35 | CNF_IGNR, |
| 36 | CLS_ACPT, |
| 37 | CLS_IGNR |
| 38 | }; |
| 39 | |
Thomas Pedersen | ba4a14e | 2011-09-20 13:43:32 -0700 | [diff] [blame] | 40 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 41 | enum ieee80211_self_protected_actioncode action, |
| 42 | u8 *da, __le16 llid, __le16 plid, __le16 reason); |
Thomas Pedersen | ba4a14e | 2011-09-20 13:43:32 -0700 | [diff] [blame] | 43 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 44 | /** |
| 45 | * mesh_plink_fsm_restart - restart a mesh peer link finite state machine |
| 46 | * |
Rui Paulo | 23c7a29 | 2009-11-09 23:46:42 +0000 | [diff] [blame] | 47 | * @sta: mesh peer link to restart |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 48 | * |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 49 | * Locking: this function must be called holding sta->lock |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 50 | */ |
| 51 | static inline void mesh_plink_fsm_restart(struct sta_info *sta) |
| 52 | { |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 53 | sta->plink_state = NL80211_PLINK_LISTEN; |
Luis Carlos Cobo | 37659ff | 2008-02-29 12:13:38 -0800 | [diff] [blame] | 54 | sta->llid = sta->plid = sta->reason = 0; |
| 55 | sta->plink_retries = 0; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 56 | } |
| 57 | |
Thomas Pedersen | 3b14465 | 2013-01-26 16:39:55 -0800 | [diff] [blame] | 58 | /* |
| 59 | * mesh_set_short_slot_time - enable / disable ERP short slot time. |
| 60 | * |
| 61 | * The standard indirectly mandates mesh STAs to turn off short slot time by |
| 62 | * disallowing advertising this (802.11-2012 8.4.1.4), but that doesn't mean we |
| 63 | * can't be sneaky about it. Enable short slot time if all mesh STAs in the |
| 64 | * MBSS support ERP rates. |
| 65 | * |
| 66 | * Returns BSS_CHANGED_ERP_SLOT or 0 for no change. |
| 67 | */ |
| 68 | static u32 mesh_set_short_slot_time(struct ieee80211_sub_if_data *sdata) |
| 69 | { |
| 70 | struct ieee80211_local *local = sdata->local; |
| 71 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
| 72 | struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; |
| 73 | struct sta_info *sta; |
| 74 | u32 erp_rates = 0, changed = 0; |
| 75 | int i; |
| 76 | bool short_slot = false; |
| 77 | |
| 78 | if (band == IEEE80211_BAND_5GHZ) { |
| 79 | /* (IEEE 802.11-2012 19.4.5) */ |
| 80 | short_slot = true; |
| 81 | goto out; |
| 82 | } else if (band != IEEE80211_BAND_2GHZ || |
| 83 | (band == IEEE80211_BAND_2GHZ && |
| 84 | local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) |
| 85 | goto out; |
| 86 | |
| 87 | for (i = 0; i < sband->n_bitrates; i++) |
| 88 | if (sband->bitrates[i].flags & IEEE80211_RATE_ERP_G) |
| 89 | erp_rates |= BIT(i); |
| 90 | |
| 91 | if (!erp_rates) |
| 92 | goto out; |
| 93 | |
| 94 | rcu_read_lock(); |
| 95 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
| 96 | if (sdata != sta->sdata || |
| 97 | sta->plink_state != NL80211_PLINK_ESTAB) |
| 98 | continue; |
| 99 | |
| 100 | short_slot = false; |
| 101 | if (erp_rates & sta->sta.supp_rates[band]) |
| 102 | short_slot = true; |
| 103 | else |
| 104 | break; |
| 105 | } |
| 106 | rcu_read_unlock(); |
| 107 | |
| 108 | out: |
| 109 | if (sdata->vif.bss_conf.use_short_slot != short_slot) { |
| 110 | sdata->vif.bss_conf.use_short_slot = short_slot; |
| 111 | changed = BSS_CHANGED_ERP_SLOT; |
| 112 | mpl_dbg(sdata, "mesh_plink %pM: ERP short slot time %d\n", |
| 113 | sdata->vif.addr, short_slot); |
| 114 | } |
| 115 | return changed; |
| 116 | } |
| 117 | |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 118 | /** |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 119 | * mesh_set_ht_prot_mode - set correct HT protection mode |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 120 | * |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 121 | * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT |
| 122 | * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT |
| 123 | * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is |
| 124 | * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode |
| 125 | * is selected if all peers in our 20/40MHz MBSS support HT and atleast one |
| 126 | * HT20 peer is present. Otherwise no-protection mode is selected. |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 127 | */ |
| 128 | static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) |
| 129 | { |
| 130 | struct ieee80211_local *local = sdata->local; |
| 131 | struct sta_info *sta; |
| 132 | u32 changed = 0; |
| 133 | u16 ht_opmode; |
| 134 | bool non_ht_sta = false, ht20_sta = false; |
| 135 | |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 136 | if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 137 | return 0; |
| 138 | |
| 139 | rcu_read_lock(); |
| 140 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 141 | if (sdata != sta->sdata || |
| 142 | sta->plink_state != NL80211_PLINK_ESTAB) |
| 143 | continue; |
| 144 | |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 145 | switch (sta->ch_width) { |
| 146 | case NL80211_CHAN_WIDTH_20_NOHT: |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 147 | mpl_dbg(sdata, |
| 148 | "mesh_plink %pM: nonHT sta (%pM) is present\n", |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 149 | sdata->vif.addr, sta->sta.addr); |
| 150 | non_ht_sta = true; |
| 151 | goto out; |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 152 | case NL80211_CHAN_WIDTH_20: |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 153 | mpl_dbg(sdata, |
| 154 | "mesh_plink %pM: HT20 sta (%pM) is present\n", |
Ashok Nagarajan | cbf9322 | 2012-05-07 21:00:31 -0700 | [diff] [blame] | 155 | sdata->vif.addr, sta->sta.addr); |
| 156 | ht20_sta = true; |
| 157 | default: |
| 158 | break; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 159 | } |
| 160 | } |
| 161 | out: |
| 162 | rcu_read_unlock(); |
| 163 | |
| 164 | if (non_ht_sta) |
| 165 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED; |
Johannes Berg | 466f310 | 2012-07-25 13:51:49 +0200 | [diff] [blame] | 166 | else if (ht20_sta && |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 167 | sdata->vif.bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 168 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ; |
| 169 | else |
| 170 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; |
| 171 | |
| 172 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { |
| 173 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
Ashok Nagarajan | 70c33ea | 2012-04-30 14:20:32 -0700 | [diff] [blame] | 174 | sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 175 | changed = BSS_CHANGED_HT; |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 176 | mpl_dbg(sdata, |
| 177 | "mesh_plink %pM: protection mode changed to %d\n", |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 178 | sdata->vif.addr, ht_opmode); |
| 179 | } |
| 180 | |
| 181 | return changed; |
| 182 | } |
| 183 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 184 | /** |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 185 | * __mesh_plink_deactivate - deactivate mesh peer link |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 186 | * |
| 187 | * @sta: mesh peer link to deactivate |
| 188 | * |
| 189 | * All mesh paths with this peer as next hop will be flushed |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 190 | * Returns beacon changed flag if the beacon content changed. |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 191 | * |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 192 | * Locking: the caller must hold sta->lock |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 193 | */ |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 194 | static u32 __mesh_plink_deactivate(struct sta_info *sta) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 195 | { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 196 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 197 | u32 changed = 0; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 198 | |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 199 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
| 200 | changed = mesh_plink_dec_estab_count(sdata); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 201 | sta->plink_state = NL80211_PLINK_BLOCKED; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 202 | mesh_path_flush_by_nexthop(sta); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 203 | |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 204 | ieee80211_mps_sta_status_update(sta); |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 205 | changed |= ieee80211_mps_local_status_update(sdata); |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 206 | |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 207 | return changed; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 208 | } |
| 209 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 210 | /** |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 211 | * mesh_plink_deactivate - deactivate mesh peer link |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 212 | * |
| 213 | * @sta: mesh peer link to deactivate |
| 214 | * |
| 215 | * All mesh paths with this peer as next hop will be flushed |
| 216 | */ |
Thomas Pedersen | 45b5028 | 2013-02-06 10:17:21 -0800 | [diff] [blame] | 217 | u32 mesh_plink_deactivate(struct sta_info *sta) |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 218 | { |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 219 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 220 | u32 changed; |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 221 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 222 | spin_lock_bh(&sta->lock); |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 223 | changed = __mesh_plink_deactivate(sta); |
Thomas Pedersen | ba4a14e | 2011-09-20 13:43:32 -0700 | [diff] [blame] | 224 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
| 225 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 226 | sta->sta.addr, sta->llid, sta->plid, |
| 227 | sta->reason); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 228 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 229 | |
Thomas Pedersen | 45b5028 | 2013-02-06 10:17:21 -0800 | [diff] [blame] | 230 | return changed; |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 231 | } |
| 232 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 233 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 234 | enum ieee80211_self_protected_actioncode action, |
| 235 | u8 *da, __le16 llid, __le16 plid, __le16 reason) |
| 236 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 237 | struct ieee80211_local *local = sdata->local; |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 238 | struct sk_buff *skb; |
Thomas Pedersen | e7570df | 2012-08-03 12:21:34 -0700 | [diff] [blame] | 239 | struct ieee80211_tx_info *info; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 240 | struct ieee80211_mgmt *mgmt; |
| 241 | bool include_plid = false; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 242 | u16 peering_proto = 0; |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 243 | u8 *pos, ie_len = 4; |
| 244 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + |
| 245 | sizeof(mgmt->u.action.u.self_prot); |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 246 | int err = -ENOMEM; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 247 | |
Javier Cardona | 65e8b0c | 2012-01-17 18:17:46 -0800 | [diff] [blame] | 248 | skb = dev_alloc_skb(local->tx_headroom + |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 249 | hdr_len + |
| 250 | 2 + /* capability info */ |
| 251 | 2 + /* AID */ |
| 252 | 2 + 8 + /* supported rates */ |
| 253 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + |
| 254 | 2 + sdata->u.mesh.mesh_id_len + |
| 255 | 2 + sizeof(struct ieee80211_meshconf_ie) + |
Thomas Pedersen | 176f360 | 2011-10-26 14:47:27 -0700 | [diff] [blame] | 256 | 2 + sizeof(struct ieee80211_ht_cap) + |
Johannes Berg | 074d46d | 2012-03-15 19:45:16 +0100 | [diff] [blame] | 257 | 2 + sizeof(struct ieee80211_ht_operation) + |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 258 | 2 + 8 + /* peering IE */ |
| 259 | sdata->u.mesh.ie_len); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 260 | if (!skb) |
| 261 | return -1; |
Thomas Pedersen | e7570df | 2012-08-03 12:21:34 -0700 | [diff] [blame] | 262 | info = IEEE80211_SKB_CB(skb); |
Javier Cardona | 65e8b0c | 2012-01-17 18:17:46 -0800 | [diff] [blame] | 263 | skb_reserve(skb, local->tx_headroom); |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 264 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
| 265 | memset(mgmt, 0, hdr_len); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 266 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 267 | IEEE80211_STYPE_ACTION); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 268 | memcpy(mgmt->da, da, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 269 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
Javier Cardona | 915b5c5 | 2011-05-03 16:57:10 -0700 | [diff] [blame] | 270 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 271 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
| 272 | mgmt->u.action.u.self_prot.action_code = action; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 273 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 274 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 275 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
| 276 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 277 | /* capability info */ |
| 278 | pos = skb_put(skb, 2); |
| 279 | memset(pos, 0, 2); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 280 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 281 | /* AID */ |
| 282 | pos = skb_put(skb, 2); |
Rui Paulo | 77fa76b | 2009-11-09 23:46:52 +0000 | [diff] [blame] | 283 | memcpy(pos + 2, &plid, 2); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 284 | } |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 285 | if (ieee80211_add_srates_ie(sdata, skb, true, band) || |
| 286 | ieee80211_add_ext_srates_ie(sdata, skb, true, band) || |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 287 | mesh_add_rsn_ie(sdata, skb) || |
| 288 | mesh_add_meshid_ie(sdata, skb) || |
| 289 | mesh_add_meshconf_ie(sdata, skb)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 290 | goto free; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 291 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
Thomas Pedersen | e7570df | 2012-08-03 12:21:34 -0700 | [diff] [blame] | 292 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 293 | if (mesh_add_meshid_ie(sdata, skb)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 294 | goto free; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 295 | } |
| 296 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 297 | /* Add Mesh Peering Management element */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 298 | switch (action) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 299 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 300 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 301 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 302 | ie_len += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 303 | include_plid = true; |
| 304 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 305 | case WLAN_SP_MESH_PEERING_CLOSE: |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 306 | if (plid) { |
| 307 | ie_len += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 308 | include_plid = true; |
| 309 | } |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 310 | ie_len += 2; /* reason code */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 311 | break; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 312 | default: |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 313 | err = -EINVAL; |
| 314 | goto free; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 315 | } |
| 316 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 317 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 318 | goto free; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 319 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 320 | pos = skb_put(skb, 2 + ie_len); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 321 | *pos++ = WLAN_EID_PEER_MGMT; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 322 | *pos++ = ie_len; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 323 | memcpy(pos, &peering_proto, 2); |
| 324 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 325 | memcpy(pos, &llid, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 326 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 327 | if (include_plid) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 328 | memcpy(pos, &plid, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 329 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 330 | } |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 331 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 332 | memcpy(pos, &reason, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 333 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 334 | } |
Thomas Pedersen | 176f360 | 2011-10-26 14:47:27 -0700 | [diff] [blame] | 335 | |
| 336 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 337 | if (mesh_add_ht_cap_ie(sdata, skb) || |
| 338 | mesh_add_ht_oper_ie(sdata, skb)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 339 | goto free; |
Thomas Pedersen | 176f360 | 2011-10-26 14:47:27 -0700 | [diff] [blame] | 340 | } |
| 341 | |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 342 | if (mesh_add_vendor_ies(sdata, skb)) |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 343 | goto free; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 344 | |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 345 | ieee80211_tx_skb(sdata, skb); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 346 | return 0; |
Thomas Pedersen | f609a43 | 2012-08-03 12:21:35 -0700 | [diff] [blame] | 347 | free: |
| 348 | kfree_skb(skb); |
| 349 | return err; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 350 | } |
| 351 | |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 352 | static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, |
| 353 | struct sta_info *sta, |
| 354 | struct ieee802_11_elems *elems, bool insert) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 355 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 356 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 357 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 358 | struct ieee80211_supported_band *sband; |
Thomas Pedersen | f68d776 | 2013-01-23 12:18:13 -0800 | [diff] [blame] | 359 | u32 rates, basic_rates = 0, changed = 0; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 360 | |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 361 | sband = local->hw.wiphy->bands[band]; |
| 362 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 363 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 364 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 365 | sta->last_rx = jiffies; |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 366 | |
| 367 | /* rates and capabilities don't change during peering */ |
| 368 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
| 369 | goto out; |
Chun-Yeow Yeoh | bae35d9 | 2012-07-24 11:52:35 +0800 | [diff] [blame] | 370 | |
Thomas Pedersen | f68d776 | 2013-01-23 12:18:13 -0800 | [diff] [blame] | 371 | if (sta->sta.supp_rates[band] != rates) |
| 372 | changed |= IEEE80211_RC_SUPP_RATES_CHANGED; |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 373 | sta->sta.supp_rates[band] = rates; |
Thomas Pedersen | e76781e | 2012-04-18 19:24:13 -0700 | [diff] [blame] | 374 | if (elems->ht_cap_elem && |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 375 | sdata->vif.bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 376 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
Johannes Berg | e1a0c6b | 2013-02-07 11:47:44 +0100 | [diff] [blame] | 377 | elems->ht_cap_elem, sta); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 378 | else |
| 379 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); |
| 380 | |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 381 | if (elems->ht_operation) { |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 382 | struct cfg80211_chan_def chandef; |
| 383 | |
Thomas Pedersen | c7d2582 | 2012-04-26 15:01:07 -0700 | [diff] [blame] | 384 | if (!(elems->ht_operation->ht_param & |
| 385 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) |
Johannes Berg | e1a0c6b | 2013-02-07 11:47:44 +0100 | [diff] [blame] | 386 | sta->sta.bandwidth = IEEE80211_STA_RX_BW_20; |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 387 | ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan, |
| 388 | elems->ht_operation, &chandef); |
Thomas Pedersen | f68d776 | 2013-01-23 12:18:13 -0800 | [diff] [blame] | 389 | if (sta->ch_width != chandef.width) |
| 390 | changed |= IEEE80211_RC_BW_CHANGED; |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 391 | sta->ch_width = chandef.width; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 392 | } |
Thomas Pedersen | c7d2582 | 2012-04-26 15:01:07 -0700 | [diff] [blame] | 393 | |
Helmut Schaa | 59cf1d6 | 2012-11-27 18:03:13 +0100 | [diff] [blame] | 394 | if (insert) |
| 395 | rate_control_rate_init(sta); |
Thomas Pedersen | f68d776 | 2013-01-23 12:18:13 -0800 | [diff] [blame] | 396 | else |
| 397 | rate_control_rate_update(local, sband, sta, changed); |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 398 | out: |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 399 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 400 | } |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 401 | |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 402 | static struct sta_info * |
| 403 | __mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *hw_addr) |
| 404 | { |
| 405 | struct sta_info *sta; |
| 406 | |
| 407 | if (sdata->local->num_sta >= MESH_MAX_PLINKS) |
Thomas Pedersen | e87278e | 2012-04-26 15:01:06 -0700 | [diff] [blame] | 408 | return NULL; |
| 409 | |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 410 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
| 411 | if (!sta) |
| 412 | return NULL; |
| 413 | |
| 414 | sta->plink_state = NL80211_PLINK_LISTEN; |
| 415 | init_timer(&sta->plink_timer); |
| 416 | |
| 417 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
| 418 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); |
| 419 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); |
| 420 | |
| 421 | set_sta_flag(sta, WLAN_STA_WME); |
| 422 | |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 423 | return sta; |
| 424 | } |
| 425 | |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 426 | static struct sta_info * |
| 427 | mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *addr, |
| 428 | struct ieee802_11_elems *elems) |
| 429 | { |
| 430 | struct sta_info *sta = NULL; |
| 431 | |
| 432 | /* Userspace handles peer allocation when security is enabled */ |
| 433 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) |
| 434 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, |
| 435 | elems->ie_start, |
| 436 | elems->total_len, |
| 437 | GFP_KERNEL); |
| 438 | else |
| 439 | sta = __mesh_sta_info_alloc(sdata, addr); |
| 440 | |
| 441 | return sta; |
| 442 | } |
| 443 | |
| 444 | /* |
| 445 | * mesh_sta_info_get - return mesh sta info entry for @addr. |
| 446 | * |
| 447 | * @sdata: local meshif |
| 448 | * @addr: peer's address |
| 449 | * @elems: IEs from beacon or mesh peering frame. |
| 450 | * |
| 451 | * Return existing or newly allocated sta_info under RCU read lock. |
| 452 | * (re)initialize with given IEs. |
| 453 | */ |
| 454 | static struct sta_info * |
| 455 | mesh_sta_info_get(struct ieee80211_sub_if_data *sdata, |
| 456 | u8 *addr, struct ieee802_11_elems *elems) __acquires(RCU) |
| 457 | { |
| 458 | struct sta_info *sta = NULL; |
| 459 | |
| 460 | rcu_read_lock(); |
| 461 | sta = sta_info_get(sdata, addr); |
| 462 | if (sta) { |
| 463 | mesh_sta_info_init(sdata, sta, elems, false); |
| 464 | } else { |
| 465 | rcu_read_unlock(); |
| 466 | /* can't run atomic */ |
| 467 | sta = mesh_sta_info_alloc(sdata, addr, elems); |
| 468 | if (!sta) { |
| 469 | rcu_read_lock(); |
| 470 | return NULL; |
| 471 | } |
| 472 | |
Thomas Pedersen | 3b4797b | 2013-01-26 17:00:02 -0800 | [diff] [blame] | 473 | mesh_sta_info_init(sdata, sta, elems, true); |
| 474 | |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 475 | if (sta_info_insert_rcu(sta)) |
| 476 | return NULL; |
| 477 | } |
| 478 | |
| 479 | return sta; |
| 480 | } |
| 481 | |
| 482 | /* |
| 483 | * mesh_neighbour_update - update or initialize new mesh neighbor. |
| 484 | * |
| 485 | * @sdata: local meshif |
| 486 | * @addr: peer's address |
| 487 | * @elems: IEs from beacon or mesh peering frame |
| 488 | * |
| 489 | * Initiates peering if appropriate. |
| 490 | */ |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 491 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
| 492 | u8 *hw_addr, |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 493 | struct ieee802_11_elems *elems) |
| 494 | { |
| 495 | struct sta_info *sta; |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 496 | u32 changed = 0; |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 497 | |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 498 | sta = mesh_sta_info_get(sdata, hw_addr, elems); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 499 | if (!sta) |
| 500 | goto out; |
| 501 | |
Javier Cardona | 1570ca5 | 2011-04-07 15:08:35 -0700 | [diff] [blame] | 502 | if (mesh_peer_accepts_plinks(elems) && |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 503 | sta->plink_state == NL80211_PLINK_LISTEN && |
| 504 | sdata->u.mesh.accepting_plinks && |
| 505 | sdata->u.mesh.mshcfg.auto_open_plinks && |
| 506 | rssi_threshold_check(sta, sdata)) |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 507 | changed = mesh_plink_open(sta); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 508 | |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 509 | ieee80211_mps_frame_release(sta, elems); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 510 | out: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 511 | rcu_read_unlock(); |
Thomas Pedersen | 2b5e196 | 2013-02-14 11:20:13 -0800 | [diff] [blame] | 512 | ieee80211_mbss_info_change_notify(sdata, changed); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 513 | } |
| 514 | |
| 515 | static void mesh_plink_timer(unsigned long data) |
| 516 | { |
| 517 | struct sta_info *sta; |
| 518 | __le16 llid, plid, reason; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 519 | struct ieee80211_sub_if_data *sdata; |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 520 | struct mesh_config *mshcfg; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 521 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 522 | /* |
| 523 | * This STA is valid because sta_info_destroy() will |
| 524 | * del_timer_sync() this timer after having made sure |
| 525 | * it cannot be readded (by deleting the plink.) |
| 526 | */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 527 | sta = (struct sta_info *) data; |
| 528 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 529 | if (sta->sdata->local->quiescing) { |
| 530 | sta->plink_timer_was_running = true; |
| 531 | return; |
| 532 | } |
| 533 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 534 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 535 | if (sta->ignore_plink_timer) { |
| 536 | sta->ignore_plink_timer = false; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 537 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 538 | return; |
| 539 | } |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 540 | mpl_dbg(sta->sdata, |
| 541 | "Mesh plink timer for %pM fired on state %d\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 542 | sta->sta.addr, sta->plink_state); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 543 | reason = 0; |
| 544 | llid = sta->llid; |
| 545 | plid = sta->plid; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 546 | sdata = sta->sdata; |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 547 | mshcfg = &sdata->u.mesh.mshcfg; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 548 | |
| 549 | switch (sta->plink_state) { |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 550 | case NL80211_PLINK_OPN_RCVD: |
| 551 | case NL80211_PLINK_OPN_SNT: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 552 | /* retry timer */ |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 553 | if (sta->plink_retries < mshcfg->dot11MeshMaxRetries) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 554 | u32 rand; |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 555 | mpl_dbg(sta->sdata, |
| 556 | "Mesh plink for %pM (retry, timeout): %d %d\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 557 | sta->sta.addr, sta->plink_retries, |
| 558 | sta->plink_timeout); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 559 | get_random_bytes(&rand, sizeof(u32)); |
| 560 | sta->plink_timeout = sta->plink_timeout + |
| 561 | rand % sta->plink_timeout; |
| 562 | ++sta->plink_retries; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 563 | mod_plink_timer(sta, sta->plink_timeout); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 564 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 565 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
| 566 | sta->sta.addr, llid, 0, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 567 | break; |
| 568 | } |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 569 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 570 | /* fall through on else */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 571 | case NL80211_PLINK_CNF_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 572 | /* confirm timer */ |
| 573 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 574 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 575 | sta->plink_state = NL80211_PLINK_HOLDING; |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 576 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 577 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 578 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 579 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 580 | break; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 581 | case NL80211_PLINK_HOLDING: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 582 | /* holding timer */ |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 583 | del_timer(&sta->plink_timer); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 584 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 585 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 586 | break; |
| 587 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 588 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 589 | break; |
| 590 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 591 | } |
| 592 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 593 | #ifdef CONFIG_PM |
| 594 | void mesh_plink_quiesce(struct sta_info *sta) |
| 595 | { |
Thomas Pedersen | aa5a1b8 | 2013-02-04 14:12:41 -0800 | [diff] [blame] | 596 | if (!ieee80211_vif_is_mesh(&sta->sdata->vif)) |
| 597 | return; |
| 598 | |
Thomas Pedersen | 45b5028 | 2013-02-06 10:17:21 -0800 | [diff] [blame] | 599 | /* no kernel mesh sta timers have been initialized */ |
| 600 | if (sta->sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) |
| 601 | return; |
| 602 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 603 | if (del_timer_sync(&sta->plink_timer)) |
| 604 | sta->plink_timer_was_running = true; |
| 605 | } |
| 606 | |
| 607 | void mesh_plink_restart(struct sta_info *sta) |
| 608 | { |
| 609 | if (sta->plink_timer_was_running) { |
| 610 | add_timer(&sta->plink_timer); |
| 611 | sta->plink_timer_was_running = false; |
| 612 | } |
| 613 | } |
| 614 | #endif |
| 615 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 616 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
| 617 | { |
| 618 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); |
| 619 | sta->plink_timer.data = (unsigned long) sta; |
| 620 | sta->plink_timer.function = mesh_plink_timer; |
| 621 | sta->plink_timeout = timeout; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 622 | add_timer(&sta->plink_timer); |
| 623 | } |
| 624 | |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 625 | u32 mesh_plink_open(struct sta_info *sta) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 626 | { |
| 627 | __le16 llid; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 628 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 629 | u32 changed; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 630 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 631 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 632 | return 0; |
Javier Cardona | 53e8051 | 2011-04-07 15:08:32 -0700 | [diff] [blame] | 633 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 634 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 635 | get_random_bytes(&llid, 2); |
| 636 | sta->llid = llid; |
Chun-Yeow Yeoh | 9385d04 | 2012-09-14 14:18:31 +0800 | [diff] [blame] | 637 | if (sta->plink_state != NL80211_PLINK_LISTEN && |
| 638 | sta->plink_state != NL80211_PLINK_BLOCKED) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 639 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 640 | return 0; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 641 | } |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 642 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 643 | mesh_plink_timer_set(sta, sdata->u.mesh.mshcfg.dot11MeshRetryTimeout); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 644 | spin_unlock_bh(&sta->lock); |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 645 | mpl_dbg(sdata, |
| 646 | "Mesh plink: starting establishment with %pM\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 647 | sta->sta.addr); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 648 | |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 649 | /* set the non-peer mode to active during peering */ |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 650 | changed = ieee80211_mps_local_status_update(sdata); |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 651 | |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 652 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
| 653 | sta->sta.addr, llid, 0, 0); |
| 654 | return changed; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 655 | } |
| 656 | |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 657 | u32 mesh_plink_block(struct sta_info *sta) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 658 | { |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 659 | u32 changed; |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 660 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 661 | spin_lock_bh(&sta->lock); |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 662 | changed = __mesh_plink_deactivate(sta); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 663 | sta->plink_state = NL80211_PLINK_BLOCKED; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 664 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 665 | |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 666 | return changed; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 667 | } |
| 668 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 669 | |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 670 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, |
| 671 | struct ieee80211_mgmt *mgmt, size_t len, |
| 672 | struct ieee80211_rx_status *rx_status) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 673 | { |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 674 | struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 675 | struct ieee802_11_elems elems; |
| 676 | struct sta_info *sta; |
| 677 | enum plink_event event; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 678 | enum ieee80211_self_protected_actioncode ftype; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 679 | size_t baselen; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 680 | bool matches_local = true; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 681 | u8 ie_len; |
| 682 | u8 *baseaddr; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 683 | u32 changed = 0; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 684 | __le16 plid, llid, reason; |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 685 | static const char * const mplstates[] = { |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 686 | [NL80211_PLINK_LISTEN] = "LISTEN", |
| 687 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", |
| 688 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", |
| 689 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", |
| 690 | [NL80211_PLINK_ESTAB] = "ESTAB", |
| 691 | [NL80211_PLINK_HOLDING] = "HOLDING", |
| 692 | [NL80211_PLINK_BLOCKED] = "BLOCKED" |
Rui Paulo | 1460dd1 | 2009-11-09 23:46:48 +0000 | [diff] [blame] | 693 | }; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 694 | |
Johannes Berg | 9c80d3d | 2008-09-08 15:41:59 +0200 | [diff] [blame] | 695 | /* need action_code, aux */ |
| 696 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) |
| 697 | return; |
| 698 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 699 | if (is_multicast_ether_addr(mgmt->da)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 700 | mpl_dbg(sdata, |
| 701 | "Mesh plink: ignore frame from multicast address\n"); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 702 | return; |
| 703 | } |
| 704 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 705 | baseaddr = mgmt->u.action.u.self_prot.variable; |
| 706 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; |
| 707 | if (mgmt->u.action.u.self_prot.action_code == |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 708 | WLAN_SP_MESH_PEERING_CONFIRM) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 709 | baseaddr += 4; |
David Woo | 70bdb6b | 2009-08-12 11:03:44 -0700 | [diff] [blame] | 710 | baselen += 4; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 711 | } |
| 712 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 713 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 714 | if (!elems.peering) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 715 | mpl_dbg(sdata, |
| 716 | "Mesh plink: missing necessary peer link ie\n"); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 717 | return; |
| 718 | } |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 719 | |
Javier Cardona | b130e5c | 2011-05-03 16:57:07 -0700 | [diff] [blame] | 720 | if (elems.rsn_len && |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 721 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 722 | mpl_dbg(sdata, |
| 723 | "Mesh plink: can't establish link with secure peer\n"); |
Javier Cardona | 5cff5e0 | 2011-04-07 15:08:29 -0700 | [diff] [blame] | 724 | return; |
| 725 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 726 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 727 | ftype = mgmt->u.action.u.self_prot.action_code; |
| 728 | ie_len = elems.peering_len; |
| 729 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || |
| 730 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || |
| 731 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 |
| 732 | && ie_len != 8)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 733 | mpl_dbg(sdata, |
| 734 | "Mesh plink: incorrect plink ie length %d %d\n", |
| 735 | ftype, ie_len); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 736 | return; |
| 737 | } |
| 738 | |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 739 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
Johannes Berg | bf7cd94 | 2013-02-15 14:40:31 +0100 | [diff] [blame^] | 740 | (!elems.mesh_id || !elems.mesh_config)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 741 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 742 | return; |
| 743 | } |
| 744 | /* Note the lines below are correct, the llid in the frame is the plid |
| 745 | * from the point of view of this host. |
| 746 | */ |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 747 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 748 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 749 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
| 750 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 751 | |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 752 | /* WARNING: Only for sta pointer, is dropped & re-acquired */ |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 753 | rcu_read_lock(); |
| 754 | |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 755 | sta = sta_info_get(sdata, mgmt->sa); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 756 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 757 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 758 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 759 | return; |
| 760 | } |
| 761 | |
Ashok Nagarajan | 5533513 | 2012-02-28 17:04:08 -0800 | [diff] [blame] | 762 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
Ashok Nagarajan | 3d4f969 | 2012-03-06 12:48:30 -0800 | [diff] [blame] | 763 | !rssi_threshold_check(sta, sdata)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 764 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
Ashok Nagarajan | 3d4f969 | 2012-03-06 12:48:30 -0800 | [diff] [blame] | 765 | mgmt->sa); |
Ashok Nagarajan | 5533513 | 2012-02-28 17:04:08 -0800 | [diff] [blame] | 766 | rcu_read_unlock(); |
| 767 | return; |
| 768 | } |
| 769 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 770 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 771 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
Javier Cardona | 53e8051 | 2011-04-07 15:08:32 -0700 | [diff] [blame] | 772 | rcu_read_unlock(); |
| 773 | return; |
| 774 | } |
| 775 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 776 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 777 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 778 | return; |
| 779 | } |
| 780 | |
| 781 | /* Now we will figure out the appropriate event... */ |
| 782 | event = PLINK_UNDEFINED; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 783 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
Thomas Pedersen | f743ff4 | 2012-04-18 19:23:43 -0700 | [diff] [blame] | 784 | !mesh_matches_local(sdata, &elems)) { |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 785 | matches_local = false; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 786 | switch (ftype) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 787 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 788 | event = OPN_RJCT; |
| 789 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 790 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 791 | event = CNF_RJCT; |
| 792 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 793 | default: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 794 | break; |
| 795 | } |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | if (!sta && !matches_local) { |
| 799 | rcu_read_unlock(); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 800 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 801 | llid = 0; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 802 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 803 | mgmt->sa, llid, plid, reason); |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 804 | return; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 805 | } else if (!sta) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 806 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 807 | if (!mesh_plink_free_count(sdata)) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 808 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 809 | rcu_read_unlock(); |
| 810 | return; |
| 811 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 812 | event = OPN_ACPT; |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 813 | } else if (matches_local) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 814 | switch (ftype) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 815 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 816 | if (!mesh_plink_free_count(sdata) || |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 817 | (sta->plid && sta->plid != plid)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 818 | event = OPN_IGNR; |
| 819 | else |
| 820 | event = OPN_ACPT; |
| 821 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 822 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 823 | if (!mesh_plink_free_count(sdata) || |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 824 | (sta->llid != llid || sta->plid != plid)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 825 | event = CNF_IGNR; |
| 826 | else |
| 827 | event = CNF_ACPT; |
| 828 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 829 | case WLAN_SP_MESH_PEERING_CLOSE: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 830 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 831 | /* Do not check for llid or plid. This does not |
| 832 | * follow the standard but since multiple plinks |
| 833 | * per sta are not supported, it is necessary in |
| 834 | * order to avoid a livelock when MP A sees an |
| 835 | * establish peer link to MP B but MP B does not |
| 836 | * see it. This can be caused by a timeout in |
| 837 | * B's peer link establishment or B beign |
| 838 | * restarted. |
| 839 | */ |
| 840 | event = CLS_ACPT; |
| 841 | else if (sta->plid != plid) |
| 842 | event = CLS_IGNR; |
| 843 | else if (ie_len == 7 && sta->llid != llid) |
| 844 | event = CLS_IGNR; |
| 845 | else |
| 846 | event = CLS_ACPT; |
| 847 | break; |
| 848 | default: |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 849 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 850 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 851 | return; |
| 852 | } |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | if (event == OPN_ACPT) { |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 856 | rcu_read_unlock(); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 857 | /* allocate sta entry if necessary and update info */ |
Thomas Pedersen | 296fcba | 2013-01-23 12:18:12 -0800 | [diff] [blame] | 858 | sta = mesh_sta_info_get(sdata, mgmt->sa, &elems); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 859 | if (!sta) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 860 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 861 | rcu_read_unlock(); |
| 862 | return; |
| 863 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 864 | } |
| 865 | |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 866 | mpl_dbg(sdata, |
| 867 | "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] | 868 | mgmt->sa, mplstates[sta->plink_state], |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 869 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
| 870 | event); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 871 | reason = 0; |
Thomas Pedersen | 54ab1ff | 2012-04-18 19:23:42 -0700 | [diff] [blame] | 872 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 873 | switch (sta->plink_state) { |
| 874 | /* spin_unlock as soon as state is updated at each case */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 875 | case NL80211_PLINK_LISTEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 876 | switch (event) { |
| 877 | case CLS_ACPT: |
| 878 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 879 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 880 | break; |
| 881 | case OPN_ACPT: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 882 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 883 | sta->plid = plid; |
| 884 | get_random_bytes(&llid, 2); |
| 885 | sta->llid = llid; |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 886 | mesh_plink_timer_set(sta, |
| 887 | mshcfg->dot11MeshRetryTimeout); |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 888 | |
| 889 | /* set the non-peer mode to active during peering */ |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 890 | changed |= ieee80211_mps_local_status_update(sdata); |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 891 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 892 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 893 | mesh_plink_frame_tx(sdata, |
| 894 | WLAN_SP_MESH_PEERING_OPEN, |
| 895 | sta->sta.addr, llid, 0, 0); |
| 896 | mesh_plink_frame_tx(sdata, |
| 897 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 898 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 899 | break; |
| 900 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 901 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 902 | break; |
| 903 | } |
| 904 | break; |
| 905 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 906 | case NL80211_PLINK_OPN_SNT: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 907 | switch (event) { |
| 908 | case OPN_RJCT: |
| 909 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 910 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 911 | case CLS_ACPT: |
| 912 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 913 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 914 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 915 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 916 | if (!mod_plink_timer(sta, |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 917 | mshcfg->dot11MeshHoldingTimeout)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 918 | sta->ignore_plink_timer = true; |
| 919 | |
| 920 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 921 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 922 | mesh_plink_frame_tx(sdata, |
| 923 | WLAN_SP_MESH_PEERING_CLOSE, |
| 924 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 925 | break; |
| 926 | case OPN_ACPT: |
| 927 | /* retry timer is left untouched */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 928 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 929 | sta->plid = plid; |
| 930 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 931 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 932 | mesh_plink_frame_tx(sdata, |
| 933 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 934 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 935 | break; |
| 936 | case CNF_ACPT: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 937 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 938 | if (!mod_plink_timer(sta, |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 939 | mshcfg->dot11MeshConfirmTimeout)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 940 | sta->ignore_plink_timer = true; |
| 941 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 942 | spin_unlock_bh(&sta->lock); |
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; |
| 949 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 950 | case NL80211_PLINK_OPN_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 951 | switch (event) { |
| 952 | case OPN_RJCT: |
| 953 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 954 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 955 | case CLS_ACPT: |
| 956 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 957 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 958 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 959 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 960 | if (!mod_plink_timer(sta, |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 961 | mshcfg->dot11MeshHoldingTimeout)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 962 | sta->ignore_plink_timer = true; |
| 963 | |
| 964 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 965 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 966 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 967 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 968 | break; |
| 969 | case OPN_ACPT: |
| 970 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 971 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 972 | mesh_plink_frame_tx(sdata, |
| 973 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 974 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 975 | break; |
| 976 | case CNF_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 977 | del_timer(&sta->plink_timer); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 978 | sta->plink_state = NL80211_PLINK_ESTAB; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 979 | spin_unlock_bh(&sta->lock); |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 980 | changed |= mesh_plink_inc_estab_count(sdata); |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 981 | changed |= mesh_set_ht_prot_mode(sdata); |
Thomas Pedersen | 3b14465 | 2013-01-26 16:39:55 -0800 | [diff] [blame] | 982 | changed |= mesh_set_short_slot_time(sdata); |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 983 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 984 | sta->sta.addr); |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 985 | ieee80211_mps_sta_status_update(sta); |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 986 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 987 | mshcfg->power_mode); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 988 | break; |
| 989 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 990 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 991 | break; |
| 992 | } |
| 993 | break; |
| 994 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 995 | case NL80211_PLINK_CNF_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 996 | switch (event) { |
| 997 | case OPN_RJCT: |
| 998 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 999 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1000 | case CLS_ACPT: |
| 1001 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 1002 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1003 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 1004 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1005 | if (!mod_plink_timer(sta, |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 1006 | mshcfg->dot11MeshHoldingTimeout)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1007 | sta->ignore_plink_timer = true; |
| 1008 | |
| 1009 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1010 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 1011 | mesh_plink_frame_tx(sdata, |
| 1012 | WLAN_SP_MESH_PEERING_CLOSE, |
| 1013 | sta->sta.addr, llid, plid, reason); |
Johannes Berg | ff59dc7 | 2008-02-25 10:11:50 +0100 | [diff] [blame] | 1014 | break; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1015 | case OPN_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1016 | del_timer(&sta->plink_timer); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 1017 | sta->plink_state = NL80211_PLINK_ESTAB; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1018 | spin_unlock_bh(&sta->lock); |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 1019 | changed |= mesh_plink_inc_estab_count(sdata); |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 1020 | changed |= mesh_set_ht_prot_mode(sdata); |
Thomas Pedersen | 3b14465 | 2013-01-26 16:39:55 -0800 | [diff] [blame] | 1021 | changed |= mesh_set_short_slot_time(sdata); |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 1022 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 1023 | sta->sta.addr); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 1024 | mesh_plink_frame_tx(sdata, |
| 1025 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 1026 | sta->sta.addr, llid, plid, 0); |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 1027 | ieee80211_mps_sta_status_update(sta); |
Thomas Pedersen | 39886b6 | 2013-02-13 12:14:19 -0800 | [diff] [blame] | 1028 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
| 1029 | mshcfg->power_mode); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1030 | break; |
| 1031 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1032 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1033 | break; |
| 1034 | } |
| 1035 | break; |
| 1036 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 1037 | case NL80211_PLINK_ESTAB: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1038 | switch (event) { |
| 1039 | case CLS_ACPT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 1040 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1041 | sta->reason = reason; |
Marco Porsch | df32381 | 2012-08-08 07:58:43 +0200 | [diff] [blame] | 1042 | changed |= __mesh_plink_deactivate(sta); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 1043 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1044 | llid = sta->llid; |
Marco Porsch | 453e66f2 | 2012-11-21 18:40:32 -0800 | [diff] [blame] | 1045 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1046 | spin_unlock_bh(&sta->lock); |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 1047 | changed |= mesh_set_ht_prot_mode(sdata); |
Thomas Pedersen | 3b14465 | 2013-01-26 16:39:55 -0800 | [diff] [blame] | 1048 | changed |= mesh_set_short_slot_time(sdata); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 1049 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 1050 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1051 | break; |
| 1052 | case OPN_ACPT: |
| 1053 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1054 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 1055 | mesh_plink_frame_tx(sdata, |
| 1056 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 1057 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1058 | break; |
| 1059 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1060 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1061 | break; |
| 1062 | } |
| 1063 | break; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 1064 | case NL80211_PLINK_HOLDING: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1065 | switch (event) { |
| 1066 | case CLS_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1067 | if (del_timer(&sta->plink_timer)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1068 | sta->ignore_plink_timer = 1; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1069 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1070 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1071 | break; |
| 1072 | case OPN_ACPT: |
| 1073 | case CNF_ACPT: |
| 1074 | case OPN_RJCT: |
| 1075 | case CNF_RJCT: |
| 1076 | llid = sta->llid; |
| 1077 | reason = sta->reason; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1078 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 1079 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 1080 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1081 | break; |
| 1082 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1083 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1084 | } |
| 1085 | break; |
| 1086 | default: |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 1087 | /* should not get here, PLINK_BLOCKED is dealt with at the |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 1088 | * beginning of the function |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1089 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1090 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1091 | break; |
| 1092 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1093 | |
| 1094 | rcu_read_unlock(); |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 1095 | |
| 1096 | if (changed) |
Thomas Pedersen | 2b5e196 | 2013-02-14 11:20:13 -0800 | [diff] [blame] | 1097 | ieee80211_mbss_info_change_notify(sdata, changed); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 1098 | } |