2 * This file contains the handling of command
3 * responses as well as events generated by firmware.
5 #include <linux/slab.h>
6 #include <linux/delay.h>
7 #include <linux/sched.h>
8 #include <asm/unaligned.h>
9 #include <net/cfg80211.h>
15 * @brief This function handles disconnect event. it
16 * reports disconnect to upper layer, clean tx/rx packets,
17 * reset link state etc.
19 * @param priv A pointer to struct lbs_private structure
22 void lbs_mac_event_disconnected(struct lbs_private *priv)
24 if (priv->connect_status != LBS_CONNECTED)
27 lbs_deb_enter(LBS_DEB_ASSOC);
30 * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
31 * It causes problem in the Supplicant
33 msleep_interruptible(1000);
35 if (priv->wdev->iftype == NL80211_IFTYPE_STATION)
36 lbs_send_disconnect_notification(priv);
38 /* report disconnect to upper layer */
39 netif_stop_queue(priv->dev);
40 netif_carrier_off(priv->dev);
42 /* Free Tx and Rx packets */
43 kfree_skb(priv->currenttxskb);
44 priv->currenttxskb = NULL;
45 priv->tx_pending_len = 0;
47 priv->connect_status = LBS_DISCONNECTED;
49 if (priv->psstate != PS_STATE_FULL_POWER) {
50 /* make firmware to exit PS mode */
51 lbs_deb_cmd("disconnected, so exit PS mode\n");
52 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, false);
54 lbs_deb_leave(LBS_DEB_ASSOC);
57 int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len)
59 uint16_t respcmd, curcmd;
60 struct cmd_header *resp;
65 lbs_deb_enter(LBS_DEB_HOST);
67 mutex_lock(&priv->lock);
68 spin_lock_irqsave(&priv->driver_lock, flags);
71 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
73 spin_unlock_irqrestore(&priv->driver_lock, flags);
78 curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
79 respcmd = le16_to_cpu(resp->command);
80 result = le16_to_cpu(resp->result);
82 lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
83 respcmd, le16_to_cpu(resp->seqnum), len);
84 lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);
86 if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
87 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
88 le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
89 spin_unlock_irqrestore(&priv->driver_lock, flags);
93 if (respcmd != CMD_RET(curcmd) &&
94 respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
95 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
96 spin_unlock_irqrestore(&priv->driver_lock, flags);
101 if (resp->result == cpu_to_le16(0x0004)) {
102 /* 0x0004 means -EAGAIN. Drop the response, let it time out
103 and be resubmitted */
104 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
105 le16_to_cpu(resp->command));
106 spin_unlock_irqrestore(&priv->driver_lock, flags);
111 /* Now we got response from FW, cancel the command timer */
112 del_timer(&priv->command_timer);
113 priv->cmd_timed_out = 0;
115 if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
116 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
117 u16 action = le16_to_cpu(psmode->action);
120 "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
124 lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
127 * We should not re-try enter-ps command in
128 * ad-hoc mode. It takes place in
129 * lbs_execute_next_command().
131 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR &&
132 action == PS_MODE_ACTION_ENTER_PS)
133 priv->psmode = LBS802_11POWERMODECAM;
134 } else if (action == PS_MODE_ACTION_ENTER_PS) {
135 priv->needtowakeup = 0;
136 priv->psstate = PS_STATE_AWAKE;
138 lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
139 if (priv->connect_status != LBS_CONNECTED) {
141 * When Deauth Event received before Enter_PS command
142 * response, We need to wake up the firmware.
145 "disconnected, invoking lbs_ps_wakeup\n");
147 spin_unlock_irqrestore(&priv->driver_lock, flags);
148 mutex_unlock(&priv->lock);
149 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS,
151 mutex_lock(&priv->lock);
152 spin_lock_irqsave(&priv->driver_lock, flags);
154 } else if (action == PS_MODE_ACTION_EXIT_PS) {
155 priv->needtowakeup = 0;
156 priv->psstate = PS_STATE_FULL_POWER;
157 lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
159 lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
162 lbs_complete_command(priv, priv->cur_cmd, result);
163 spin_unlock_irqrestore(&priv->driver_lock, flags);
169 /* If the command is not successful, cleanup and return failure */
170 if ((result != 0 || !(respcmd & 0x8000))) {
171 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
174 * Handling errors here
177 case CMD_RET(CMD_GET_HW_SPEC):
178 case CMD_RET(CMD_802_11_RESET):
179 lbs_deb_host("CMD_RESP: reset failed\n");
183 lbs_complete_command(priv, priv->cur_cmd, result);
184 spin_unlock_irqrestore(&priv->driver_lock, flags);
190 spin_unlock_irqrestore(&priv->driver_lock, flags);
192 if (priv->cur_cmd && priv->cur_cmd->callback) {
193 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
197 spin_lock_irqsave(&priv->driver_lock, flags);
200 /* Clean up and Put current command back to cmdfreeq */
201 lbs_complete_command(priv, priv->cur_cmd, result);
203 spin_unlock_irqrestore(&priv->driver_lock, flags);
206 mutex_unlock(&priv->lock);
207 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
211 int lbs_process_event(struct lbs_private *priv, u32 event)
214 struct cmd_header cmd;
216 lbs_deb_enter(LBS_DEB_CMD);
219 case MACREG_INT_CODE_LINK_SENSED:
220 lbs_deb_cmd("EVENT: link sensed\n");
223 case MACREG_INT_CODE_DEAUTHENTICATED:
224 lbs_deb_cmd("EVENT: deauthenticated\n");
225 lbs_mac_event_disconnected(priv);
228 case MACREG_INT_CODE_DISASSOCIATED:
229 lbs_deb_cmd("EVENT: disassociated\n");
230 lbs_mac_event_disconnected(priv);
233 case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
234 lbs_deb_cmd("EVENT: link lost\n");
235 lbs_mac_event_disconnected(priv);
238 case MACREG_INT_CODE_PS_SLEEP:
239 lbs_deb_cmd("EVENT: ps sleep\n");
241 /* handle unexpected PS SLEEP event */
242 if (priv->psstate == PS_STATE_FULL_POWER) {
244 "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
247 priv->psstate = PS_STATE_PRE_SLEEP;
249 lbs_ps_confirm_sleep(priv);
253 case MACREG_INT_CODE_HOST_AWAKE:
254 lbs_deb_cmd("EVENT: host awake\n");
255 if (priv->reset_deep_sleep_wakeup)
256 priv->reset_deep_sleep_wakeup(priv);
257 priv->is_deep_sleep = 0;
258 lbs_cmd_async(priv, CMD_802_11_WAKEUP_CONFIRM, &cmd,
260 priv->is_host_sleep_activated = 0;
261 wake_up_interruptible(&priv->host_sleep_q);
264 case MACREG_INT_CODE_DEEP_SLEEP_AWAKE:
265 if (priv->reset_deep_sleep_wakeup)
266 priv->reset_deep_sleep_wakeup(priv);
267 lbs_deb_cmd("EVENT: ds awake\n");
268 priv->is_deep_sleep = 0;
269 priv->wakeup_dev_required = 0;
270 wake_up_interruptible(&priv->ds_awake_q);
273 case MACREG_INT_CODE_PS_AWAKE:
274 lbs_deb_cmd("EVENT: ps awake\n");
275 /* handle unexpected PS AWAKE event */
276 if (priv->psstate == PS_STATE_FULL_POWER) {
278 "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
282 priv->psstate = PS_STATE_AWAKE;
284 if (priv->needtowakeup) {
286 * wait for the command processing to finish
287 * before resuming sending
288 * priv->needtowakeup will be set to FALSE
291 lbs_deb_cmd("waking up ...\n");
292 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, false);
296 case MACREG_INT_CODE_MIC_ERR_UNICAST:
297 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
298 lbs_send_mic_failureevent(priv, event);
301 case MACREG_INT_CODE_MIC_ERR_MULTICAST:
302 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
303 lbs_send_mic_failureevent(priv, event);
306 case MACREG_INT_CODE_MIB_CHANGED:
307 lbs_deb_cmd("EVENT: MIB CHANGED\n");
309 case MACREG_INT_CODE_INIT_DONE:
310 lbs_deb_cmd("EVENT: INIT DONE\n");
312 case MACREG_INT_CODE_ADHOC_BCN_LOST:
313 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
315 case MACREG_INT_CODE_RSSI_LOW:
316 lbs_pr_alert("EVENT: rssi low\n");
318 case MACREG_INT_CODE_SNR_LOW:
319 lbs_pr_alert("EVENT: snr low\n");
321 case MACREG_INT_CODE_MAX_FAIL:
322 lbs_pr_alert("EVENT: max fail\n");
324 case MACREG_INT_CODE_RSSI_HIGH:
325 lbs_pr_alert("EVENT: rssi high\n");
327 case MACREG_INT_CODE_SNR_HIGH:
328 lbs_pr_alert("EVENT: snr high\n");
331 case MACREG_INT_CODE_MESH_AUTO_STARTED:
332 /* Ignore spurious autostart events */
333 lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
337 lbs_pr_alert("EVENT: unknown event id %d\n", event);
341 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);