2 * Marvell Wireless LAN device driver: AP event handling
4 * Copyright (C) 2012, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
25 * This function will return the pointer to station entry in station list
26 * table which matches specified mac address.
27 * This function should be called after acquiring RA list spinlock.
28 * NULL is returned if station entry is not found in associated STA list.
30 struct mwifiex_sta_node
*
31 mwifiex_get_sta_entry(struct mwifiex_private
*priv
, u8
*mac
)
33 struct mwifiex_sta_node
*node
;
38 list_for_each_entry(node
, &priv
->sta_list
, list
) {
39 if (!memcmp(node
->mac_addr
, mac
, ETH_ALEN
))
47 * This function will add a sta_node entry to associated station list
48 * table with the given mac address.
49 * If entry exist already, existing entry is returned.
50 * If received mac address is NULL, NULL is returned.
52 static struct mwifiex_sta_node
*
53 mwifiex_add_sta_entry(struct mwifiex_private
*priv
, u8
*mac
)
55 struct mwifiex_sta_node
*node
;
61 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
62 node
= mwifiex_get_sta_entry(priv
, mac
);
66 node
= kzalloc(sizeof(struct mwifiex_sta_node
), GFP_KERNEL
);
70 memcpy(node
->mac_addr
, mac
, ETH_ALEN
);
71 list_add_tail(&node
->list
, &priv
->sta_list
);
74 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
79 * This function will search for HT IE in association request IEs
80 * and set station HT parameters accordingly.
83 mwifiex_set_sta_ht_cap(struct mwifiex_private
*priv
, const u8
*ies
,
84 int ies_len
, struct mwifiex_sta_node
*node
)
86 const struct ieee80211_ht_cap
*ht_cap
;
91 ht_cap
= (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY
, ies
, ies_len
);
93 node
->is_11n_enabled
= 1;
94 node
->max_amsdu
= le16_to_cpu(ht_cap
->cap_info
) &
95 IEEE80211_HT_CAP_MAX_AMSDU
?
96 MWIFIEX_TX_DATA_BUF_SIZE_8K
:
97 MWIFIEX_TX_DATA_BUF_SIZE_4K
;
99 node
->is_11n_enabled
= 0;
106 * This function will delete a station entry from station list
108 static void mwifiex_del_sta_entry(struct mwifiex_private
*priv
, u8
*mac
)
110 struct mwifiex_sta_node
*node
, *tmp
;
113 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
115 node
= mwifiex_get_sta_entry(priv
, mac
);
117 list_for_each_entry_safe(node
, tmp
, &priv
->sta_list
,
119 list_del(&node
->list
);
124 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
129 * This function will delete all stations from associated station list.
131 static void mwifiex_del_all_sta_list(struct mwifiex_private
*priv
)
133 struct mwifiex_sta_node
*node
, *tmp
;
136 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
138 list_for_each_entry_safe(node
, tmp
, &priv
->sta_list
, list
) {
139 list_del(&node
->list
);
143 INIT_LIST_HEAD(&priv
->sta_list
);
144 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
149 * This function handles AP interface specific events generated by firmware.
151 * Event specific routines are called by this function based
152 * upon the generated event cause.
155 * Events supported for AP -
156 * - EVENT_UAP_STA_ASSOC
157 * - EVENT_UAP_STA_DEAUTH
158 * - EVENT_UAP_BSS_ACTIVE
159 * - EVENT_UAP_BSS_START
160 * - EVENT_UAP_BSS_IDLE
161 * - EVENT_UAP_MIC_COUNTERMEASURES:
163 int mwifiex_process_uap_event(struct mwifiex_private
*priv
)
165 struct mwifiex_adapter
*adapter
= priv
->adapter
;
167 u32 eventcause
= adapter
->event_cause
;
168 struct station_info sinfo
;
169 struct mwifiex_assoc_event
*event
;
170 struct mwifiex_sta_node
*node
;
172 struct host_cmd_ds_11n_batimeout
*ba_timeout
;
174 switch (eventcause
) {
175 case EVENT_UAP_STA_ASSOC
:
176 memset(&sinfo
, 0, sizeof(sinfo
));
177 event
= (struct mwifiex_assoc_event
*)
178 (adapter
->event_body
+ MWIFIEX_UAP_EVENT_EXTRA_HEADER
);
179 if (le16_to_cpu(event
->type
) == TLV_TYPE_UAP_MGMT_FRAME
) {
182 if (ieee80211_is_assoc_req(event
->frame_control
))
184 else if (ieee80211_is_reassoc_req(event
->frame_control
))
185 /* There will be ETH_ALEN bytes of
186 * current_ap_addr before the re-assoc ies.
191 sinfo
.filled
= STATION_INFO_ASSOC_REQ_IES
;
192 sinfo
.assoc_req_ies
= &event
->data
[len
];
193 len
= (u8
*)sinfo
.assoc_req_ies
-
194 (u8
*)&event
->frame_control
;
195 sinfo
.assoc_req_ies_len
=
196 le16_to_cpu(event
->len
) - (u16
)len
;
199 cfg80211_new_sta(priv
->netdev
, event
->sta_addr
, &sinfo
,
202 node
= mwifiex_add_sta_entry(priv
, event
->sta_addr
);
204 dev_warn(adapter
->dev
,
205 "could not create station entry!\n");
209 if (!priv
->ap_11n_enabled
)
212 mwifiex_set_sta_ht_cap(priv
, sinfo
.assoc_req_ies
,
213 sinfo
.assoc_req_ies_len
, node
);
215 for (i
= 0; i
< MAX_NUM_TID
; i
++) {
216 if (node
->is_11n_enabled
)
218 priv
->aggr_prio_tbl
[i
].ampdu_user
;
220 node
->ampdu_sta
[i
] = BA_STREAM_NOT_ALLOWED
;
222 memset(node
->rx_seq
, 0xff, sizeof(node
->rx_seq
));
224 case EVENT_UAP_STA_DEAUTH
:
225 deauth_mac
= adapter
->event_body
+
226 MWIFIEX_UAP_EVENT_EXTRA_HEADER
;
227 cfg80211_del_sta(priv
->netdev
, deauth_mac
, GFP_KERNEL
);
229 if (priv
->ap_11n_enabled
) {
230 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv
, deauth_mac
);
231 mwifiex_del_tx_ba_stream_tbl_by_ra(priv
, deauth_mac
);
233 mwifiex_del_sta_entry(priv
, deauth_mac
);
235 case EVENT_UAP_BSS_IDLE
:
236 priv
->media_connected
= false;
237 mwifiex_clean_txrx(priv
);
238 mwifiex_del_all_sta_list(priv
);
240 case EVENT_UAP_BSS_ACTIVE
:
241 priv
->media_connected
= true;
243 case EVENT_UAP_BSS_START
:
244 dev_dbg(adapter
->dev
, "AP EVENT: event id: %#x\n", eventcause
);
245 memcpy(priv
->netdev
->dev_addr
, adapter
->event_body
+ 2,
248 case EVENT_UAP_MIC_COUNTERMEASURES
:
249 /* For future development */
250 dev_dbg(adapter
->dev
, "AP EVENT: event id: %#x\n", eventcause
);
252 case EVENT_AMSDU_AGGR_CTRL
:
253 dev_dbg(adapter
->dev
, "event: AMSDU_AGGR_CTRL %d\n",
254 *(u16
*)adapter
->event_body
);
256 if (priv
->media_connected
) {
257 adapter
->tx_buf_size
=
258 min(adapter
->curr_tx_buf_size
,
259 le16_to_cpu(*(__le16
*)adapter
->event_body
));
261 dev_dbg(adapter
->dev
, "event: tx_buf_size %d\n",
262 adapter
->tx_buf_size
);
266 dev_dbg(adapter
->dev
, "event: ADDBA Request\n");
267 if (priv
->media_connected
)
268 mwifiex_send_cmd_async(priv
, HostCmd_CMD_11N_ADDBA_RSP
,
269 HostCmd_ACT_GEN_SET
, 0,
270 adapter
->event_body
);
273 dev_dbg(adapter
->dev
, "event: DELBA Request\n");
274 if (priv
->media_connected
)
275 mwifiex_11n_delete_ba_stream(priv
, adapter
->event_body
);
277 case EVENT_BA_STREAM_TIEMOUT
:
278 dev_dbg(adapter
->dev
, "event: BA Stream timeout\n");
279 if (priv
->media_connected
) {
280 ba_timeout
= (void *)adapter
->event_body
;
281 mwifiex_11n_ba_stream_timeout(priv
, ba_timeout
);
285 dev_dbg(adapter
->dev
, "event: unknown event id: %#x\n",