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 | |
| 16 | #ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG |
| 17 | #define mpl_dbg(fmt, args...) printk(KERN_DEBUG fmt, ##args) |
| 18 | #else |
| 19 | #define mpl_dbg(fmt, args...) do { (void)(0); } while (0) |
| 20 | #endif |
| 21 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 22 | #define PLINK_GET_LLID(p) (p + 2) |
| 23 | #define PLINK_GET_PLID(p) (p + 4) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 24 | |
| 25 | #define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \ |
| 26 | jiffies + HZ * t / 1000)) |
| 27 | |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 28 | #define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries) |
| 29 | #define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout) |
| 30 | #define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout) |
| 31 | #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout) |
| 32 | #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [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 | /* |
| 79 | * NOTE: This is just an alias for sta_info_alloc(), see notes |
| 80 | * on it in the lifecycle management section! |
| 81 | */ |
Johannes Berg | 03e4497 | 2008-02-27 09:56:40 +0100 | [diff] [blame] | 82 | static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata, |
Thomas Pedersen | 739522b | 2011-10-26 14:47:28 -0700 | [diff] [blame^] | 83 | u8 *hw_addr, u32 rates, |
| 84 | struct ieee802_11_elems *elems) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 85 | { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 86 | struct ieee80211_local *local = sdata->local; |
Thomas Pedersen | 739522b | 2011-10-26 14:47:28 -0700 | [diff] [blame^] | 87 | struct ieee80211_supported_band *sband; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 88 | struct sta_info *sta; |
| 89 | |
Thomas Pedersen | 739522b | 2011-10-26 14:47:28 -0700 | [diff] [blame^] | 90 | sband = local->hw.wiphy->bands[local->oper_channel->band]; |
| 91 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 92 | if (local->num_sta >= MESH_MAX_PLINKS) |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 93 | return NULL; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 94 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 95 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 96 | if (!sta) |
| 97 | return NULL; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 98 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 99 | set_sta_flag(sta, WLAN_STA_AUTH); |
| 100 | set_sta_flag(sta, WLAN_STA_AUTHORIZED); |
| 101 | set_sta_flag(sta, WLAN_STA_WME); |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 102 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
Thomas Pedersen | 739522b | 2011-10-26 14:47:28 -0700 | [diff] [blame^] | 103 | if (elems->ht_cap_elem) |
| 104 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, elems->ht_cap_elem, |
| 105 | &sta->sta.ht_cap); |
Christian Lamparter | b973c31 | 2008-12-27 22:19:49 +0100 | [diff] [blame] | 106 | rate_control_rate_init(sta); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 107 | |
| 108 | return sta; |
| 109 | } |
| 110 | |
| 111 | /** |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 112 | * __mesh_plink_deactivate - deactivate mesh peer link |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 113 | * |
| 114 | * @sta: mesh peer link to deactivate |
| 115 | * |
| 116 | * All mesh paths with this peer as next hop will be flushed |
| 117 | * |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 118 | * Locking: the caller must hold sta->lock |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 119 | */ |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 120 | static bool __mesh_plink_deactivate(struct sta_info *sta) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 121 | { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 122 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 123 | bool deactivated = false; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 124 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 125 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 126 | mesh_plink_dec_estab_count(sdata); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 127 | deactivated = true; |
| 128 | } |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 129 | sta->plink_state = NL80211_PLINK_BLOCKED; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 130 | mesh_path_flush_by_nexthop(sta); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 131 | |
| 132 | return deactivated; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 133 | } |
| 134 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 135 | /** |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 136 | * mesh_plink_deactivate - deactivate mesh peer link |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 137 | * |
| 138 | * @sta: mesh peer link to deactivate |
| 139 | * |
| 140 | * All mesh paths with this peer as next hop will be flushed |
| 141 | */ |
| 142 | void mesh_plink_deactivate(struct sta_info *sta) |
| 143 | { |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 144 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 145 | bool deactivated; |
| 146 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 147 | spin_lock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 148 | deactivated = __mesh_plink_deactivate(sta); |
Thomas Pedersen | ba4a14e | 2011-09-20 13:43:32 -0700 | [diff] [blame] | 149 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
| 150 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 151 | sta->sta.addr, sta->llid, sta->plid, |
| 152 | sta->reason); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 153 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 154 | |
| 155 | if (deactivated) |
| 156 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 157 | } |
| 158 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 159 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 160 | enum ieee80211_self_protected_actioncode action, |
| 161 | u8 *da, __le16 llid, __le16 plid, __le16 reason) { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 162 | struct ieee80211_local *local = sdata->local; |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 163 | struct sk_buff *skb; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 164 | struct ieee80211_mgmt *mgmt; |
| 165 | bool include_plid = false; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 166 | u16 peering_proto = 0; |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 167 | u8 *pos, ie_len = 4; |
| 168 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + |
| 169 | sizeof(mgmt->u.action.u.self_prot); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 170 | |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 171 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
| 172 | hdr_len + |
| 173 | 2 + /* capability info */ |
| 174 | 2 + /* AID */ |
| 175 | 2 + 8 + /* supported rates */ |
| 176 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + |
| 177 | 2 + sdata->u.mesh.mesh_id_len + |
| 178 | 2 + sizeof(struct ieee80211_meshconf_ie) + |
Thomas Pedersen | 176f360 | 2011-10-26 14:47:27 -0700 | [diff] [blame] | 179 | 2 + sizeof(struct ieee80211_ht_cap) + |
| 180 | 2 + sizeof(struct ieee80211_ht_info) + |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 181 | 2 + 8 + /* peering IE */ |
| 182 | sdata->u.mesh.ie_len); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 183 | if (!skb) |
| 184 | return -1; |
| 185 | skb_reserve(skb, local->hw.extra_tx_headroom); |
Thomas Pedersen | 3b69a9c | 2011-10-26 14:47:25 -0700 | [diff] [blame] | 186 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
| 187 | memset(mgmt, 0, hdr_len); |
Harvey Harrison | e7827a7 | 2008-07-15 18:44:13 -0700 | [diff] [blame] | 188 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 189 | IEEE80211_STYPE_ACTION); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 190 | memcpy(mgmt->da, da, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 191 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
Javier Cardona | 915b5c5 | 2011-05-03 16:57:10 -0700 | [diff] [blame] | 192 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 193 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
| 194 | mgmt->u.action.u.self_prot.action_code = action; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 195 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 196 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
| 197 | /* capability info */ |
| 198 | pos = skb_put(skb, 2); |
| 199 | memset(pos, 0, 2); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 200 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 201 | /* AID */ |
| 202 | pos = skb_put(skb, 2); |
Rui Paulo | 77fa76b | 2009-11-09 23:46:52 +0000 | [diff] [blame] | 203 | memcpy(pos + 2, &plid, 2); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 204 | } |
Arik Nemtsov | 768db34 | 2011-09-28 14:12:51 +0300 | [diff] [blame] | 205 | if (ieee80211_add_srates_ie(&sdata->vif, skb) || |
| 206 | ieee80211_add_ext_srates_ie(&sdata->vif, skb) || |
Thomas Pedersen | 082ebb0 | 2011-08-11 19:35:10 -0700 | [diff] [blame] | 207 | mesh_add_rsn_ie(skb, sdata) || |
| 208 | mesh_add_meshid_ie(skb, sdata) || |
| 209 | mesh_add_meshconf_ie(skb, sdata)) |
| 210 | return -1; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 211 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
| 212 | if (mesh_add_meshid_ie(skb, sdata)) |
| 213 | return -1; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 214 | } |
| 215 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 216 | /* Add Mesh Peering Management element */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 217 | switch (action) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 218 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 219 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 220 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 221 | ie_len += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 222 | include_plid = true; |
| 223 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 224 | case WLAN_SP_MESH_PEERING_CLOSE: |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 225 | if (plid) { |
| 226 | ie_len += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 227 | include_plid = true; |
| 228 | } |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 229 | ie_len += 2; /* reason code */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 230 | break; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 231 | default: |
| 232 | return -EINVAL; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 233 | } |
| 234 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 235 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
| 236 | return -ENOMEM; |
| 237 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 238 | pos = skb_put(skb, 2 + ie_len); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 239 | *pos++ = WLAN_EID_PEER_MGMT; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 240 | *pos++ = ie_len; |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 241 | memcpy(pos, &peering_proto, 2); |
| 242 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 243 | memcpy(pos, &llid, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 244 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 245 | if (include_plid) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 246 | memcpy(pos, &plid, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 247 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 248 | } |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 249 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 250 | memcpy(pos, &reason, 2); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 251 | pos += 2; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 252 | } |
Thomas Pedersen | 176f360 | 2011-10-26 14:47:27 -0700 | [diff] [blame] | 253 | |
| 254 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
| 255 | if (mesh_add_ht_cap_ie(skb, sdata) || |
| 256 | mesh_add_ht_info_ie(skb, sdata)) |
| 257 | return -1; |
| 258 | } |
| 259 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 260 | if (mesh_add_vendor_ies(skb, sdata)) |
| 261 | return -1; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 262 | |
Johannes Berg | 62ae67b | 2009-11-18 18:42:05 +0100 | [diff] [blame] | 263 | ieee80211_tx_skb(sdata, skb); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 264 | return 0; |
| 265 | } |
| 266 | |
Javier Cardona | 1570ca5 | 2011-04-07 15:08:35 -0700 | [diff] [blame] | 267 | void mesh_neighbour_update(u8 *hw_addr, u32 rates, |
| 268 | struct ieee80211_sub_if_data *sdata, |
| 269 | struct ieee802_11_elems *elems) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 270 | { |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 271 | struct ieee80211_local *local = sdata->local; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 272 | struct sta_info *sta; |
| 273 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 274 | rcu_read_lock(); |
| 275 | |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 276 | sta = sta_info_get(sdata, hw_addr); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 277 | if (!sta) { |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 278 | rcu_read_unlock(); |
Javier Cardona | 1570ca5 | 2011-04-07 15:08:35 -0700 | [diff] [blame] | 279 | /* Userspace handles peer allocation when security is enabled |
| 280 | * */ |
Javier Cardona | b130e5c | 2011-05-03 16:57:07 -0700 | [diff] [blame] | 281 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) |
Javier Cardona | 1570ca5 | 2011-04-07 15:08:35 -0700 | [diff] [blame] | 282 | cfg80211_notify_new_peer_candidate(sdata->dev, hw_addr, |
| 283 | elems->ie_start, elems->total_len, |
| 284 | GFP_KERNEL); |
| 285 | else |
Thomas Pedersen | 739522b | 2011-10-26 14:47:28 -0700 | [diff] [blame^] | 286 | sta = mesh_plink_alloc(sdata, hw_addr, rates, elems); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 287 | if (!sta) |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 288 | return; |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 289 | if (sta_info_insert_rcu(sta)) { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 290 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 291 | return; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 292 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | sta->last_rx = jiffies; |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 296 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
Javier Cardona | 1570ca5 | 2011-04-07 15:08:35 -0700 | [diff] [blame] | 297 | if (mesh_peer_accepts_plinks(elems) && |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 298 | sta->plink_state == NL80211_PLINK_LISTEN && |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 299 | sdata->u.mesh.accepting_plinks && |
| 300 | sdata->u.mesh.mshcfg.auto_open_plinks) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 301 | mesh_plink_open(sta); |
| 302 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 303 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | static void mesh_plink_timer(unsigned long data) |
| 307 | { |
| 308 | struct sta_info *sta; |
| 309 | __le16 llid, plid, reason; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 310 | struct ieee80211_sub_if_data *sdata; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 311 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 312 | /* |
| 313 | * This STA is valid because sta_info_destroy() will |
| 314 | * del_timer_sync() this timer after having made sure |
| 315 | * it cannot be readded (by deleting the plink.) |
| 316 | */ |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 317 | sta = (struct sta_info *) data; |
| 318 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 319 | if (sta->sdata->local->quiescing) { |
| 320 | sta->plink_timer_was_running = true; |
| 321 | return; |
| 322 | } |
| 323 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 324 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 325 | if (sta->ignore_plink_timer) { |
| 326 | sta->ignore_plink_timer = false; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 327 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 328 | return; |
| 329 | } |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 330 | mpl_dbg("Mesh plink timer for %pM fired on state %d\n", |
| 331 | sta->sta.addr, sta->plink_state); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 332 | reason = 0; |
| 333 | llid = sta->llid; |
| 334 | plid = sta->plid; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 335 | sdata = sta->sdata; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 336 | |
| 337 | switch (sta->plink_state) { |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 338 | case NL80211_PLINK_OPN_RCVD: |
| 339 | case NL80211_PLINK_OPN_SNT: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 340 | /* retry timer */ |
| 341 | if (sta->plink_retries < dot11MeshMaxRetries(sdata)) { |
| 342 | u32 rand; |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 343 | mpl_dbg("Mesh plink for %pM (retry, timeout): %d %d\n", |
| 344 | sta->sta.addr, sta->plink_retries, |
| 345 | sta->plink_timeout); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 346 | get_random_bytes(&rand, sizeof(u32)); |
| 347 | sta->plink_timeout = sta->plink_timeout + |
| 348 | rand % sta->plink_timeout; |
| 349 | ++sta->plink_retries; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 350 | mod_plink_timer(sta, sta->plink_timeout); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 351 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 352 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
| 353 | sta->sta.addr, llid, 0, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 354 | break; |
| 355 | } |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 356 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 357 | /* fall through on else */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 358 | case NL80211_PLINK_CNF_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 359 | /* confirm timer */ |
| 360 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 361 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 362 | sta->plink_state = NL80211_PLINK_HOLDING; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 363 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 364 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 365 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 366 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 367 | break; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 368 | case NL80211_PLINK_HOLDING: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 369 | /* holding timer */ |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 370 | del_timer(&sta->plink_timer); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 371 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 372 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 373 | break; |
| 374 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 375 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 376 | break; |
| 377 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 378 | } |
| 379 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 380 | #ifdef CONFIG_PM |
| 381 | void mesh_plink_quiesce(struct sta_info *sta) |
| 382 | { |
| 383 | if (del_timer_sync(&sta->plink_timer)) |
| 384 | sta->plink_timer_was_running = true; |
| 385 | } |
| 386 | |
| 387 | void mesh_plink_restart(struct sta_info *sta) |
| 388 | { |
| 389 | if (sta->plink_timer_was_running) { |
| 390 | add_timer(&sta->plink_timer); |
| 391 | sta->plink_timer_was_running = false; |
| 392 | } |
| 393 | } |
| 394 | #endif |
| 395 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 396 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
| 397 | { |
| 398 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); |
| 399 | sta->plink_timer.data = (unsigned long) sta; |
| 400 | sta->plink_timer.function = mesh_plink_timer; |
| 401 | sta->plink_timeout = timeout; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 402 | add_timer(&sta->plink_timer); |
| 403 | } |
| 404 | |
| 405 | int mesh_plink_open(struct sta_info *sta) |
| 406 | { |
| 407 | __le16 llid; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 408 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 409 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 410 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
Javier Cardona | 53e8051 | 2011-04-07 15:08:32 -0700 | [diff] [blame] | 411 | return -EPERM; |
| 412 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 413 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 414 | get_random_bytes(&llid, 2); |
| 415 | sta->llid = llid; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 416 | if (sta->plink_state != NL80211_PLINK_LISTEN) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 417 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 418 | return -EBUSY; |
| 419 | } |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 420 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 421 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 422 | spin_unlock_bh(&sta->lock); |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 423 | mpl_dbg("Mesh plink: starting establishment with %pM\n", |
| 424 | sta->sta.addr); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 425 | |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 426 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 427 | sta->sta.addr, llid, 0, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 428 | } |
| 429 | |
| 430 | void mesh_plink_block(struct sta_info *sta) |
| 431 | { |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 432 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 433 | bool deactivated; |
| 434 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 435 | spin_lock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 436 | deactivated = __mesh_plink_deactivate(sta); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 437 | sta->plink_state = NL80211_PLINK_BLOCKED; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 438 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 439 | |
| 440 | if (deactivated) |
| 441 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 442 | } |
| 443 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 444 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 445 | 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] | 446 | size_t len, struct ieee80211_rx_status *rx_status) |
| 447 | { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 448 | struct ieee80211_local *local = sdata->local; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 449 | struct ieee802_11_elems elems; |
| 450 | struct sta_info *sta; |
| 451 | enum plink_event event; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 452 | enum ieee80211_self_protected_actioncode ftype; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 453 | size_t baselen; |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 454 | bool deactivated, matches_local = true; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 455 | u8 ie_len; |
| 456 | u8 *baseaddr; |
| 457 | __le16 plid, llid, reason; |
Rui Paulo | 1460dd1 | 2009-11-09 23:46:48 +0000 | [diff] [blame] | 458 | #ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG |
| 459 | static const char *mplstates[] = { |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 460 | [NL80211_PLINK_LISTEN] = "LISTEN", |
| 461 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", |
| 462 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", |
| 463 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", |
| 464 | [NL80211_PLINK_ESTAB] = "ESTAB", |
| 465 | [NL80211_PLINK_HOLDING] = "HOLDING", |
| 466 | [NL80211_PLINK_BLOCKED] = "BLOCKED" |
Rui Paulo | 1460dd1 | 2009-11-09 23:46:48 +0000 | [diff] [blame] | 467 | }; |
| 468 | #endif |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 469 | |
Johannes Berg | 9c80d3d | 2008-09-08 15:41:59 +0200 | [diff] [blame] | 470 | /* need action_code, aux */ |
| 471 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) |
| 472 | return; |
| 473 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 474 | if (is_multicast_ether_addr(mgmt->da)) { |
| 475 | mpl_dbg("Mesh plink: ignore frame from multicast address"); |
| 476 | return; |
| 477 | } |
| 478 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 479 | baseaddr = mgmt->u.action.u.self_prot.variable; |
| 480 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; |
| 481 | if (mgmt->u.action.u.self_prot.action_code == |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 482 | WLAN_SP_MESH_PEERING_CONFIRM) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 483 | baseaddr += 4; |
David Woo | 70bdb6b | 2009-08-12 11:03:44 -0700 | [diff] [blame] | 484 | baselen += 4; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 485 | } |
| 486 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 487 | if (!elems.peering) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 488 | mpl_dbg("Mesh plink: missing necessary peer link ie\n"); |
| 489 | return; |
| 490 | } |
Javier Cardona | b130e5c | 2011-05-03 16:57:07 -0700 | [diff] [blame] | 491 | if (elems.rsn_len && |
| 492 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { |
Javier Cardona | 5cff5e0 | 2011-04-07 15:08:29 -0700 | [diff] [blame] | 493 | mpl_dbg("Mesh plink: can't establish link with secure peer\n"); |
| 494 | return; |
| 495 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 496 | |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 497 | ftype = mgmt->u.action.u.self_prot.action_code; |
| 498 | ie_len = elems.peering_len; |
| 499 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || |
| 500 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || |
| 501 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 |
| 502 | && ie_len != 8)) { |
Rui Paulo | 0938393 | 2009-11-09 23:46:43 +0000 | [diff] [blame] | 503 | mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n", |
| 504 | ftype, ie_len); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 505 | return; |
| 506 | } |
| 507 | |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 508 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
| 509 | (!elems.mesh_id || !elems.mesh_config)) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 510 | mpl_dbg("Mesh plink: missing necessary ie\n"); |
| 511 | return; |
| 512 | } |
| 513 | /* Note the lines below are correct, the llid in the frame is the plid |
| 514 | * from the point of view of this host. |
| 515 | */ |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 516 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 517 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
Thomas Pedersen | 8db0985 | 2011-08-12 20:01:00 -0700 | [diff] [blame] | 518 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
| 519 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 520 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 521 | rcu_read_lock(); |
| 522 | |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 523 | sta = sta_info_get(sdata, mgmt->sa); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 524 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 525 | mpl_dbg("Mesh plink: cls or cnf from unknown peer\n"); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 526 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 527 | return; |
| 528 | } |
| 529 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 530 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
Javier Cardona | 53e8051 | 2011-04-07 15:08:32 -0700 | [diff] [blame] | 531 | mpl_dbg("Mesh plink: Action frame from non-authed peer\n"); |
| 532 | rcu_read_unlock(); |
| 533 | return; |
| 534 | } |
| 535 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 536 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 537 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 538 | return; |
| 539 | } |
| 540 | |
| 541 | /* Now we will figure out the appropriate event... */ |
| 542 | event = PLINK_UNDEFINED; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 543 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
| 544 | (!mesh_matches_local(&elems, sdata))) { |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 545 | matches_local = false; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 546 | switch (ftype) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 547 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 548 | event = OPN_RJCT; |
| 549 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 550 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 551 | event = CNF_RJCT; |
| 552 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 553 | default: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 554 | break; |
| 555 | } |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 556 | } |
| 557 | |
| 558 | if (!sta && !matches_local) { |
| 559 | rcu_read_unlock(); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 560 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 561 | llid = 0; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 562 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 563 | mgmt->sa, llid, plid, reason); |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 564 | return; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 565 | } else if (!sta) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 566 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 567 | u32 rates; |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 568 | |
| 569 | rcu_read_unlock(); |
| 570 | |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 571 | if (!mesh_plink_free_count(sdata)) { |
| 572 | mpl_dbg("Mesh plink error: no more free plinks\n"); |
| 573 | return; |
| 574 | } |
| 575 | |
| 576 | rates = ieee80211_sta_get_rates(local, &elems, rx_status->band); |
Thomas Pedersen | 739522b | 2011-10-26 14:47:28 -0700 | [diff] [blame^] | 577 | sta = mesh_plink_alloc(sdata, mgmt->sa, rates, &elems); |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 578 | if (!sta) { |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 579 | mpl_dbg("Mesh plink error: plink table full\n"); |
| 580 | return; |
| 581 | } |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 582 | if (sta_info_insert_rcu(sta)) { |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 583 | rcu_read_unlock(); |
| 584 | return; |
| 585 | } |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 586 | event = OPN_ACPT; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 587 | spin_lock_bh(&sta->lock); |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 588 | } else if (matches_local) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 589 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 590 | switch (ftype) { |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 591 | case WLAN_SP_MESH_PEERING_OPEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 592 | if (!mesh_plink_free_count(sdata) || |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 593 | (sta->plid && sta->plid != plid)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 594 | event = OPN_IGNR; |
| 595 | else |
| 596 | event = OPN_ACPT; |
| 597 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 598 | case WLAN_SP_MESH_PEERING_CONFIRM: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 599 | if (!mesh_plink_free_count(sdata) || |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 600 | (sta->llid != llid || sta->plid != plid)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 601 | event = CNF_IGNR; |
| 602 | else |
| 603 | event = CNF_ACPT; |
| 604 | break; |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 605 | case WLAN_SP_MESH_PEERING_CLOSE: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 606 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 607 | /* Do not check for llid or plid. This does not |
| 608 | * follow the standard but since multiple plinks |
| 609 | * per sta are not supported, it is necessary in |
| 610 | * order to avoid a livelock when MP A sees an |
| 611 | * establish peer link to MP B but MP B does not |
| 612 | * see it. This can be caused by a timeout in |
| 613 | * B's peer link establishment or B beign |
| 614 | * restarted. |
| 615 | */ |
| 616 | event = CLS_ACPT; |
| 617 | else if (sta->plid != plid) |
| 618 | event = CLS_IGNR; |
| 619 | else if (ie_len == 7 && sta->llid != llid) |
| 620 | event = CLS_IGNR; |
| 621 | else |
| 622 | event = CLS_ACPT; |
| 623 | break; |
| 624 | default: |
| 625 | mpl_dbg("Mesh plink: unknown frame subtype\n"); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 626 | spin_unlock_bh(&sta->lock); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 627 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 628 | return; |
| 629 | } |
Christian Lamparter | d12c745 | 2010-10-08 22:27:07 +0200 | [diff] [blame] | 630 | } else { |
| 631 | spin_lock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 632 | } |
| 633 | |
Rui Paulo | 1460dd1 | 2009-11-09 23:46:48 +0000 | [diff] [blame] | 634 | mpl_dbg("Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", |
| 635 | mgmt->sa, mplstates[sta->plink_state], |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 636 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
| 637 | event); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 638 | reason = 0; |
| 639 | switch (sta->plink_state) { |
| 640 | /* spin_unlock as soon as state is updated at each case */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 641 | case NL80211_PLINK_LISTEN: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 642 | switch (event) { |
| 643 | case CLS_ACPT: |
| 644 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 645 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 646 | break; |
| 647 | case OPN_ACPT: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 648 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 649 | sta->plid = plid; |
| 650 | get_random_bytes(&llid, 2); |
| 651 | sta->llid = llid; |
| 652 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 653 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 654 | mesh_plink_frame_tx(sdata, |
| 655 | WLAN_SP_MESH_PEERING_OPEN, |
| 656 | sta->sta.addr, llid, 0, 0); |
| 657 | mesh_plink_frame_tx(sdata, |
| 658 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 659 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 660 | break; |
| 661 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 662 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 663 | break; |
| 664 | } |
| 665 | break; |
| 666 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 667 | case NL80211_PLINK_OPN_SNT: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 668 | switch (event) { |
| 669 | case OPN_RJCT: |
| 670 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 671 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 672 | case CLS_ACPT: |
| 673 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 674 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 675 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 676 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 677 | if (!mod_plink_timer(sta, |
| 678 | dot11MeshHoldingTimeout(sdata))) |
| 679 | sta->ignore_plink_timer = true; |
| 680 | |
| 681 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 682 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 683 | mesh_plink_frame_tx(sdata, |
| 684 | WLAN_SP_MESH_PEERING_CLOSE, |
| 685 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 686 | break; |
| 687 | case OPN_ACPT: |
| 688 | /* retry timer is left untouched */ |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 689 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 690 | sta->plid = plid; |
| 691 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 692 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 693 | mesh_plink_frame_tx(sdata, |
| 694 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 695 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 696 | break; |
| 697 | case CNF_ACPT: |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 698 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 699 | if (!mod_plink_timer(sta, |
| 700 | dot11MeshConfirmTimeout(sdata))) |
| 701 | sta->ignore_plink_timer = true; |
| 702 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 703 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 704 | break; |
| 705 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 706 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 707 | break; |
| 708 | } |
| 709 | break; |
| 710 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 711 | case NL80211_PLINK_OPN_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 712 | switch (event) { |
| 713 | case OPN_RJCT: |
| 714 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 715 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 716 | case CLS_ACPT: |
| 717 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 718 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 719 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 720 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 721 | if (!mod_plink_timer(sta, |
| 722 | dot11MeshHoldingTimeout(sdata))) |
| 723 | sta->ignore_plink_timer = true; |
| 724 | |
| 725 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 726 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 727 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 728 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 729 | break; |
| 730 | case OPN_ACPT: |
| 731 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 732 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 733 | mesh_plink_frame_tx(sdata, |
| 734 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 735 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 736 | break; |
| 737 | case CNF_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 738 | del_timer(&sta->plink_timer); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 739 | sta->plink_state = NL80211_PLINK_ESTAB; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 740 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 741 | mesh_plink_inc_estab_count(sdata); |
| 742 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 743 | mpl_dbg("Mesh plink with %pM ESTABLISHED\n", |
| 744 | sta->sta.addr); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 745 | break; |
| 746 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 747 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 748 | break; |
| 749 | } |
| 750 | break; |
| 751 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 752 | case NL80211_PLINK_CNF_RCVD: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 753 | switch (event) { |
| 754 | case OPN_RJCT: |
| 755 | case CNF_RJCT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 756 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 757 | case CLS_ACPT: |
| 758 | if (!reason) |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 759 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 760 | sta->reason = reason; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 761 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 762 | if (!mod_plink_timer(sta, |
| 763 | dot11MeshHoldingTimeout(sdata))) |
| 764 | sta->ignore_plink_timer = true; |
| 765 | |
| 766 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 767 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 768 | mesh_plink_frame_tx(sdata, |
| 769 | WLAN_SP_MESH_PEERING_CLOSE, |
| 770 | sta->sta.addr, llid, plid, reason); |
Johannes Berg | ff59dc7 | 2008-02-25 10:11:50 +0100 | [diff] [blame] | 771 | break; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 772 | case OPN_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 773 | del_timer(&sta->plink_timer); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 774 | sta->plink_state = NL80211_PLINK_ESTAB; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 775 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 776 | mesh_plink_inc_estab_count(sdata); |
| 777 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); |
Johannes Berg | 0c68ae26 | 2008-10-27 15:56:10 -0700 | [diff] [blame] | 778 | mpl_dbg("Mesh plink with %pM ESTABLISHED\n", |
| 779 | sta->sta.addr); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 780 | mesh_plink_frame_tx(sdata, |
| 781 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 782 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 783 | break; |
| 784 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 785 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 786 | break; |
| 787 | } |
| 788 | break; |
| 789 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 790 | case NL80211_PLINK_ESTAB: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 791 | switch (event) { |
| 792 | case CLS_ACPT: |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 793 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 794 | sta->reason = reason; |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 795 | deactivated = __mesh_plink_deactivate(sta); |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 796 | sta->plink_state = NL80211_PLINK_HOLDING; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 797 | llid = sta->llid; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 798 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 799 | spin_unlock_bh(&sta->lock); |
John W. Linville | c937019 | 2010-06-21 17:14:07 -0400 | [diff] [blame] | 800 | if (deactivated) |
| 801 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 802 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 803 | sta->sta.addr, llid, plid, reason); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 804 | break; |
| 805 | case OPN_ACPT: |
| 806 | llid = sta->llid; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 807 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 808 | mesh_plink_frame_tx(sdata, |
| 809 | WLAN_SP_MESH_PEERING_CONFIRM, |
| 810 | sta->sta.addr, llid, plid, 0); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 811 | break; |
| 812 | default: |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 813 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 814 | break; |
| 815 | } |
| 816 | break; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 817 | case NL80211_PLINK_HOLDING: |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 818 | switch (event) { |
| 819 | case CLS_ACPT: |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 820 | if (del_timer(&sta->plink_timer)) |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 821 | sta->ignore_plink_timer = 1; |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 822 | mesh_plink_fsm_restart(sta); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 823 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 824 | break; |
| 825 | case OPN_ACPT: |
| 826 | case CNF_ACPT: |
| 827 | case OPN_RJCT: |
| 828 | case CNF_RJCT: |
| 829 | llid = sta->llid; |
| 830 | reason = sta->reason; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 831 | spin_unlock_bh(&sta->lock); |
Thomas Pedersen | 54ef656 | 2011-08-11 19:35:12 -0700 | [diff] [blame] | 832 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
| 833 | sta->sta.addr, llid, plid, reason); |
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 | } |
| 838 | break; |
| 839 | default: |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 840 | /* should not get here, PLINK_BLOCKED is dealt with at the |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 841 | * beginning of the function |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 842 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 843 | spin_unlock_bh(&sta->lock); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 844 | break; |
| 845 | } |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 846 | |
| 847 | rcu_read_unlock(); |
Luis Carlos Cobo | c3896d2c | 2008-02-23 15:17:13 +0100 | [diff] [blame] | 848 | } |