2 * Marvell Wireless LAN device driver: utility functions
4 * Copyright (C) 2011-2014, 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.
29 * Firmware initialization complete callback handler.
31 * This function wakes up the function waiting on the init
32 * wait queue for the firmware initialization to complete.
34 int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter)
37 adapter->init_wait_q_woken = true;
38 wake_up_interruptible(&adapter->init_wait_q);
43 * Firmware shutdown complete callback handler.
45 * This function sets the hardware status to not ready and wakes up
46 * the function waiting on the init wait queue for the firmware
47 * shutdown to complete.
49 int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter)
51 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY;
52 adapter->init_wait_q_woken = true;
53 wake_up_interruptible(&adapter->init_wait_q);
58 * This function sends init/shutdown command
61 int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,
62 u32 func_init_shutdown)
66 if (func_init_shutdown == MWIFIEX_FUNC_INIT) {
67 cmd = HostCmd_CMD_FUNC_INIT;
68 } else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) {
69 cmd = HostCmd_CMD_FUNC_SHUTDOWN;
71 dev_err(priv->adapter->dev, "unsupported parameter\n");
75 return mwifiex_send_cmd(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL, true);
77 EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw);
80 * IOCTL request handler to set/get debug information.
82 * This function collates/sets the information from/to different driver
85 int mwifiex_get_debug_info(struct mwifiex_private *priv,
86 struct mwifiex_debug_info *info)
88 struct mwifiex_adapter *adapter = priv->adapter;
91 memcpy(info->packets_out,
92 priv->wmm.packets_out,
93 sizeof(priv->wmm.packets_out));
94 info->curr_tx_buf_size = (u32) adapter->curr_tx_buf_size;
95 info->tx_buf_size = (u32) adapter->tx_buf_size;
96 info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(priv,
98 info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(priv,
100 info->ps_mode = adapter->ps_mode;
101 info->ps_state = adapter->ps_state;
102 info->is_deep_sleep = adapter->is_deep_sleep;
103 info->pm_wakeup_card_req = adapter->pm_wakeup_card_req;
104 info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try;
105 info->is_hs_configured = adapter->is_hs_configured;
106 info->hs_activated = adapter->hs_activated;
107 info->is_cmd_timedout = adapter->is_cmd_timedout;
108 info->num_cmd_host_to_card_failure
109 = adapter->dbg.num_cmd_host_to_card_failure;
110 info->num_cmd_sleep_cfm_host_to_card_failure
111 = adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure;
112 info->num_tx_host_to_card_failure
113 = adapter->dbg.num_tx_host_to_card_failure;
114 info->num_event_deauth = adapter->dbg.num_event_deauth;
115 info->num_event_disassoc = adapter->dbg.num_event_disassoc;
116 info->num_event_link_lost = adapter->dbg.num_event_link_lost;
117 info->num_cmd_deauth = adapter->dbg.num_cmd_deauth;
118 info->num_cmd_assoc_success =
119 adapter->dbg.num_cmd_assoc_success;
120 info->num_cmd_assoc_failure =
121 adapter->dbg.num_cmd_assoc_failure;
122 info->num_tx_timeout = adapter->dbg.num_tx_timeout;
123 info->timeout_cmd_id = adapter->dbg.timeout_cmd_id;
124 info->timeout_cmd_act = adapter->dbg.timeout_cmd_act;
125 memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id,
126 sizeof(adapter->dbg.last_cmd_id));
127 memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act,
128 sizeof(adapter->dbg.last_cmd_act));
129 info->last_cmd_index = adapter->dbg.last_cmd_index;
130 memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id,
131 sizeof(adapter->dbg.last_cmd_resp_id));
132 info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index;
133 memcpy(info->last_event, adapter->dbg.last_event,
134 sizeof(adapter->dbg.last_event));
135 info->last_event_index = adapter->dbg.last_event_index;
136 info->data_sent = adapter->data_sent;
137 info->cmd_sent = adapter->cmd_sent;
138 info->cmd_resp_received = adapter->cmd_resp_received;
145 * This function processes the received management packet and send it
149 mwifiex_process_mgmt_packet(struct mwifiex_private *priv,
158 rx_pd = (struct rxpd *)skb->data;
160 skb_pull(skb, le16_to_cpu(rx_pd->rx_pkt_offset));
161 skb_pull(skb, sizeof(pkt_len));
163 pkt_len = le16_to_cpu(rx_pd->rx_pkt_length);
165 /* Remove address4 */
166 memmove(skb->data + sizeof(struct ieee80211_hdr_3addr),
167 skb->data + sizeof(struct ieee80211_hdr),
168 pkt_len - sizeof(struct ieee80211_hdr));
170 pkt_len -= ETH_ALEN + sizeof(pkt_len);
171 rx_pd->rx_pkt_length = cpu_to_le16(pkt_len);
173 cfg80211_rx_mgmt(priv->wdev, priv->roc_cfg.chan.center_freq,
174 CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len,
181 * This function processes the received packet before sending it to the
184 * It extracts the SKB from the received buffer and sends it to kernel.
185 * In case the received buffer does not contain the data in SKB format,
186 * the function creates a blank SKB, fills it with the data from the
187 * received buffer and then sends this new SKB to the kernel.
189 int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb)
194 priv->stats.rx_bytes += skb->len;
195 priv->stats.rx_packets++;
197 skb->dev = priv->netdev;
198 skb->protocol = eth_type_trans(skb, priv->netdev);
199 skb->ip_summed = CHECKSUM_NONE;
201 /* This is required only in case of 11n and USB/PCIE as we alloc
202 * a buffer of 4K only if its 11N (to be able to receive 4K
203 * AMSDU packets). In case of SD we allocate buffers based
204 * on the size of packet and hence this is not needed.
206 * Modifying the truesize here as our allocation for each
207 * skb is 4K but we only receive 2K packets and this cause
208 * the kernel to start dropping packets in case where
209 * application has allocated buffer based on 2K size i.e.
210 * if there a 64K packet received (in IP fragments and
211 * application allocates 64K to receive this packet but
212 * this packet would almost double up because we allocate
213 * each 1.5K fragment in 4K and pass it up. As soon as the
214 * 64K limit hits kernel will start to drop rest of the
215 * fragments. Currently we fail the Filesndl-ht.scr script
216 * for UDP, hence this fix
218 if ((priv->adapter->iface_type == MWIFIEX_USB ||
219 priv->adapter->iface_type == MWIFIEX_PCIE) &&
220 (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))
221 skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);
232 * IOCTL completion callback handler.
234 * This function is called when a pending IOCTL is completed.
236 * If work queue support is enabled, the function wakes up the
237 * corresponding waiting function. Otherwise, it processes the
238 * IOCTL response and frees the response buffer.
240 int mwifiex_complete_cmd(struct mwifiex_adapter *adapter,
241 struct cmd_ctrl_node *cmd_node)
243 dev_dbg(adapter->dev, "cmd completed: status=%d\n",
244 adapter->cmd_wait_q.status);
246 *(cmd_node->condition) = true;
248 if (adapter->cmd_wait_q.status == -ETIMEDOUT)
249 dev_err(adapter->dev, "cmd timeout\n");
251 wake_up_interruptible(&adapter->cmd_wait_q.wait);
256 /* This function will return the pointer to station entry in station list
257 * table which matches specified mac address.
258 * This function should be called after acquiring RA list spinlock.
259 * NULL is returned if station entry is not found in associated STA list.
261 struct mwifiex_sta_node *
262 mwifiex_get_sta_entry(struct mwifiex_private *priv, const u8 *mac)
264 struct mwifiex_sta_node *node;
269 list_for_each_entry(node, &priv->sta_list, list) {
270 if (!memcmp(node->mac_addr, mac, ETH_ALEN))
277 /* This function will add a sta_node entry to associated station list
278 * table with the given mac address.
279 * If entry exist already, existing entry is returned.
280 * If received mac address is NULL, NULL is returned.
282 struct mwifiex_sta_node *
283 mwifiex_add_sta_entry(struct mwifiex_private *priv, const u8 *mac)
285 struct mwifiex_sta_node *node;
291 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
292 node = mwifiex_get_sta_entry(priv, mac);
296 node = kzalloc(sizeof(*node), GFP_ATOMIC);
300 memcpy(node->mac_addr, mac, ETH_ALEN);
301 list_add_tail(&node->list, &priv->sta_list);
304 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
308 /* This function will search for HT IE in association request IEs
309 * and set station HT parameters accordingly.
312 mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies,
313 int ies_len, struct mwifiex_sta_node *node)
315 const struct ieee80211_ht_cap *ht_cap;
320 ht_cap = (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
322 node->is_11n_enabled = 1;
323 node->max_amsdu = le16_to_cpu(ht_cap->cap_info) &
324 IEEE80211_HT_CAP_MAX_AMSDU ?
325 MWIFIEX_TX_DATA_BUF_SIZE_8K :
326 MWIFIEX_TX_DATA_BUF_SIZE_4K;
328 node->is_11n_enabled = 0;
334 /* This function will delete a station entry from station list */
335 void mwifiex_del_sta_entry(struct mwifiex_private *priv, const u8 *mac)
337 struct mwifiex_sta_node *node;
340 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
342 node = mwifiex_get_sta_entry(priv, mac);
344 list_del(&node->list);
348 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
352 /* This function will delete all stations from associated station list. */
353 void mwifiex_del_all_sta_list(struct mwifiex_private *priv)
355 struct mwifiex_sta_node *node, *tmp;
358 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
360 list_for_each_entry_safe(node, tmp, &priv->sta_list, list) {
361 list_del(&node->list);
365 INIT_LIST_HEAD(&priv->sta_list);
366 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);