diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/util.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/util.c | 751 |
1 files changed, 0 insertions, 751 deletions
diff --git a/drivers/net/wireless/mwifiex/util.c b/drivers/net/wireless/mwifiex/util.c deleted file mode 100644 index 0cec8a644..000000000 --- a/drivers/net/wireless/mwifiex/util.c +++ /dev/null @@ -1,751 +0,0 @@ -/* - * Marvell Wireless LAN device driver: utility functions - * - * Copyright (C) 2011-2014, Marvell International Ltd. - * - * This software file (the "File") is distributed by Marvell International - * Ltd. under the terms of the GNU General Public License Version 2, June 1991 - * (the "License"). You may use, redistribute and/or modify this File in - * accordance with the terms and conditions of the License, a copy of which - * is available by writing to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the - * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. - * - * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE - * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE - * ARE EXPRESSLY DISCLAIMED. The License provides additional details about - * this warranty disclaimer. - */ - -#include "decl.h" -#include "ioctl.h" -#include "util.h" -#include "fw.h" -#include "main.h" -#include "wmm.h" -#include "11n.h" - -static struct mwifiex_debug_data items[] = { - {"debug_mask", item_size(debug_mask), - item_addr(debug_mask), 1}, - {"int_counter", item_size(int_counter), - item_addr(int_counter), 1}, - {"wmm_ac_vo", item_size(packets_out[WMM_AC_VO]), - item_addr(packets_out[WMM_AC_VO]), 1}, - {"wmm_ac_vi", item_size(packets_out[WMM_AC_VI]), - item_addr(packets_out[WMM_AC_VI]), 1}, - {"wmm_ac_be", item_size(packets_out[WMM_AC_BE]), - item_addr(packets_out[WMM_AC_BE]), 1}, - {"wmm_ac_bk", item_size(packets_out[WMM_AC_BK]), - item_addr(packets_out[WMM_AC_BK]), 1}, - {"tx_buf_size", item_size(tx_buf_size), - item_addr(tx_buf_size), 1}, - {"curr_tx_buf_size", item_size(curr_tx_buf_size), - item_addr(curr_tx_buf_size), 1}, - {"ps_mode", item_size(ps_mode), - item_addr(ps_mode), 1}, - {"ps_state", item_size(ps_state), - item_addr(ps_state), 1}, - {"is_deep_sleep", item_size(is_deep_sleep), - item_addr(is_deep_sleep), 1}, - {"wakeup_dev_req", item_size(pm_wakeup_card_req), - item_addr(pm_wakeup_card_req), 1}, - {"wakeup_tries", item_size(pm_wakeup_fw_try), - item_addr(pm_wakeup_fw_try), 1}, - {"hs_configured", item_size(is_hs_configured), - item_addr(is_hs_configured), 1}, - {"hs_activated", item_size(hs_activated), - item_addr(hs_activated), 1}, - {"num_tx_timeout", item_size(num_tx_timeout), - item_addr(num_tx_timeout), 1}, - {"is_cmd_timedout", item_size(is_cmd_timedout), - item_addr(is_cmd_timedout), 1}, - {"timeout_cmd_id", item_size(timeout_cmd_id), - item_addr(timeout_cmd_id), 1}, - {"timeout_cmd_act", item_size(timeout_cmd_act), - item_addr(timeout_cmd_act), 1}, - {"last_cmd_id", item_size(last_cmd_id), - item_addr(last_cmd_id), DBG_CMD_NUM}, - {"last_cmd_act", item_size(last_cmd_act), - item_addr(last_cmd_act), DBG_CMD_NUM}, - {"last_cmd_index", item_size(last_cmd_index), - item_addr(last_cmd_index), 1}, - {"last_cmd_resp_id", item_size(last_cmd_resp_id), - item_addr(last_cmd_resp_id), DBG_CMD_NUM}, - {"last_cmd_resp_index", item_size(last_cmd_resp_index), - item_addr(last_cmd_resp_index), 1}, - {"last_event", item_size(last_event), - item_addr(last_event), DBG_CMD_NUM}, - {"last_event_index", item_size(last_event_index), - item_addr(last_event_index), 1}, - {"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure), - item_addr(num_cmd_host_to_card_failure), 1}, - {"num_cmd_sleep_cfm_fail", - item_size(num_cmd_sleep_cfm_host_to_card_failure), - item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1}, - {"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure), - item_addr(num_tx_host_to_card_failure), 1}, - {"num_evt_deauth", item_size(num_event_deauth), - item_addr(num_event_deauth), 1}, - {"num_evt_disassoc", item_size(num_event_disassoc), - item_addr(num_event_disassoc), 1}, - {"num_evt_link_lost", item_size(num_event_link_lost), - item_addr(num_event_link_lost), 1}, - {"num_cmd_deauth", item_size(num_cmd_deauth), - item_addr(num_cmd_deauth), 1}, - {"num_cmd_assoc_ok", item_size(num_cmd_assoc_success), - item_addr(num_cmd_assoc_success), 1}, - {"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure), - item_addr(num_cmd_assoc_failure), 1}, - {"cmd_sent", item_size(cmd_sent), - item_addr(cmd_sent), 1}, - {"data_sent", item_size(data_sent), - item_addr(data_sent), 1}, - {"cmd_resp_received", item_size(cmd_resp_received), - item_addr(cmd_resp_received), 1}, - {"event_received", item_size(event_received), - item_addr(event_received), 1}, - - /* variables defined in struct mwifiex_adapter */ - {"cmd_pending", adapter_item_size(cmd_pending), - adapter_item_addr(cmd_pending), 1}, - {"tx_pending", adapter_item_size(tx_pending), - adapter_item_addr(tx_pending), 1}, - {"rx_pending", adapter_item_size(rx_pending), - adapter_item_addr(rx_pending), 1}, -}; - -static int num_of_items = ARRAY_SIZE(items); - -/* - * Firmware initialization complete callback handler. - * - * This function wakes up the function waiting on the init - * wait queue for the firmware initialization to complete. - */ -int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter) -{ - - if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) - if (adapter->if_ops.init_fw_port) - adapter->if_ops.init_fw_port(adapter); - - adapter->init_wait_q_woken = true; - wake_up_interruptible(&adapter->init_wait_q); - return 0; -} - -/* - * Firmware shutdown complete callback handler. - * - * This function sets the hardware status to not ready and wakes up - * the function waiting on the init wait queue for the firmware - * shutdown to complete. - */ -int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter) -{ - adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; - adapter->init_wait_q_woken = true; - wake_up_interruptible(&adapter->init_wait_q); - return 0; -} - -/* - * This function sends init/shutdown command - * to firmware. - */ -int mwifiex_init_shutdown_fw(struct mwifiex_private *priv, - u32 func_init_shutdown) -{ - u16 cmd; - - if (func_init_shutdown == MWIFIEX_FUNC_INIT) { - cmd = HostCmd_CMD_FUNC_INIT; - } else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) { - cmd = HostCmd_CMD_FUNC_SHUTDOWN; - } else { - mwifiex_dbg(priv->adapter, ERROR, - "unsupported parameter\n"); - return -1; - } - - return mwifiex_send_cmd(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL, true); -} -EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw); - -/* - * IOCTL request handler to set/get debug information. - * - * This function collates/sets the information from/to different driver - * structures. - */ -int mwifiex_get_debug_info(struct mwifiex_private *priv, - struct mwifiex_debug_info *info) -{ - struct mwifiex_adapter *adapter = priv->adapter; - - if (info) { - info->debug_mask = adapter->debug_mask; - memcpy(info->packets_out, - priv->wmm.packets_out, - sizeof(priv->wmm.packets_out)); - info->curr_tx_buf_size = (u32) adapter->curr_tx_buf_size; - info->tx_buf_size = (u32) adapter->tx_buf_size; - info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(priv, - info->rx_tbl); - info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(priv, - info->tx_tbl); - info->tdls_peer_num = mwifiex_get_tdls_list(priv, - info->tdls_list); - info->ps_mode = adapter->ps_mode; - info->ps_state = adapter->ps_state; - info->is_deep_sleep = adapter->is_deep_sleep; - info->pm_wakeup_card_req = adapter->pm_wakeup_card_req; - info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try; - info->is_hs_configured = adapter->is_hs_configured; - info->hs_activated = adapter->hs_activated; - info->is_cmd_timedout = adapter->is_cmd_timedout; - info->num_cmd_host_to_card_failure - = adapter->dbg.num_cmd_host_to_card_failure; - info->num_cmd_sleep_cfm_host_to_card_failure - = adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure; - info->num_tx_host_to_card_failure - = adapter->dbg.num_tx_host_to_card_failure; - info->num_event_deauth = adapter->dbg.num_event_deauth; - info->num_event_disassoc = adapter->dbg.num_event_disassoc; - info->num_event_link_lost = adapter->dbg.num_event_link_lost; - info->num_cmd_deauth = adapter->dbg.num_cmd_deauth; - info->num_cmd_assoc_success = - adapter->dbg.num_cmd_assoc_success; - info->num_cmd_assoc_failure = - adapter->dbg.num_cmd_assoc_failure; - info->num_tx_timeout = adapter->dbg.num_tx_timeout; - info->timeout_cmd_id = adapter->dbg.timeout_cmd_id; - info->timeout_cmd_act = adapter->dbg.timeout_cmd_act; - memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id, - sizeof(adapter->dbg.last_cmd_id)); - memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act, - sizeof(adapter->dbg.last_cmd_act)); - info->last_cmd_index = adapter->dbg.last_cmd_index; - memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id, - sizeof(adapter->dbg.last_cmd_resp_id)); - info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index; - memcpy(info->last_event, adapter->dbg.last_event, - sizeof(adapter->dbg.last_event)); - info->last_event_index = adapter->dbg.last_event_index; - info->data_sent = adapter->data_sent; - info->cmd_sent = adapter->cmd_sent; - info->cmd_resp_received = adapter->cmd_resp_received; - } - - return 0; -} - -int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf, - struct mwifiex_debug_info *info) -{ - char *p = buf; - struct mwifiex_debug_data *d = &items[0]; - size_t size, addr; - long val; - int i, j; - - if (!info) - return 0; - - for (i = 0; i < num_of_items; i++) { - p += sprintf(p, "%s=", d[i].name); - - size = d[i].size / d[i].num; - - if (i < (num_of_items - 3)) - addr = d[i].addr + (size_t)info; - else /* The last 3 items are struct mwifiex_adapter variables */ - addr = d[i].addr + (size_t)priv->adapter; - - for (j = 0; j < d[i].num; j++) { - switch (size) { - case 1: - val = *((u8 *)addr); - break; - case 2: - val = *((u16 *)addr); - break; - case 4: - val = *((u32 *)addr); - break; - case 8: - val = *((long long *)addr); - break; - default: - val = -1; - break; - } - - p += sprintf(p, "%#lx ", val); - addr += size; - } - - p += sprintf(p, "\n"); - } - - if (info->tx_tbl_num) { - p += sprintf(p, "Tx BA stream table:\n"); - for (i = 0; i < info->tx_tbl_num; i++) - p += sprintf(p, "tid = %d, ra = %pM\n", - info->tx_tbl[i].tid, info->tx_tbl[i].ra); - } - - if (info->rx_tbl_num) { - p += sprintf(p, "Rx reorder table:\n"); - for (i = 0; i < info->rx_tbl_num; i++) { - p += sprintf(p, "tid = %d, ta = %pM, ", - info->rx_tbl[i].tid, - info->rx_tbl[i].ta); - p += sprintf(p, "start_win = %d, ", - info->rx_tbl[i].start_win); - p += sprintf(p, "win_size = %d, buffer: ", - info->rx_tbl[i].win_size); - - for (j = 0; j < info->rx_tbl[i].win_size; j++) - p += sprintf(p, "%c ", - info->rx_tbl[i].buffer[j] ? - '1' : '0'); - - p += sprintf(p, "\n"); - } - } - - if (info->tdls_peer_num) { - p += sprintf(p, "TDLS peer table:\n"); - for (i = 0; i < info->tdls_peer_num; i++) { - p += sprintf(p, "peer = %pM", - info->tdls_list[i].peer_addr); - p += sprintf(p, "\n"); - } - } - - return p - buf; -} - -static int -mwifiex_parse_mgmt_packet(struct mwifiex_private *priv, u8 *payload, u16 len, - struct rxpd *rx_pd) -{ - u16 stype; - u8 category, action_code, *addr2; - struct ieee80211_hdr *ieee_hdr = (void *)payload; - - stype = (le16_to_cpu(ieee_hdr->frame_control) & IEEE80211_FCTL_STYPE); - - switch (stype) { - case IEEE80211_STYPE_ACTION: - category = *(payload + sizeof(struct ieee80211_hdr)); - switch (category) { - case WLAN_CATEGORY_PUBLIC: - action_code = *(payload + sizeof(struct ieee80211_hdr) - + 1); - if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) { - addr2 = ieee_hdr->addr2; - mwifiex_dbg(priv->adapter, INFO, - "TDLS discovery response %pM nf=%d, snr=%d\n", - addr2, rx_pd->nf, rx_pd->snr); - mwifiex_auto_tdls_update_peer_signal(priv, - addr2, - rx_pd->snr, - rx_pd->nf); - } - break; - case WLAN_CATEGORY_BACK: - /*we dont indicate BACK action frames to cfg80211*/ - mwifiex_dbg(priv->adapter, INFO, - "drop BACK action frames"); - return -1; - default: - mwifiex_dbg(priv->adapter, INFO, - "unknown public action frame category %d\n", - category); - } - default: - mwifiex_dbg(priv->adapter, INFO, - "unknown mgmt frame subtype %#x\n", stype); - return 0; - } - - return 0; -} -/* - * This function processes the received management packet and send it - * to the kernel. - */ -int -mwifiex_process_mgmt_packet(struct mwifiex_private *priv, - struct sk_buff *skb) -{ - struct rxpd *rx_pd; - u16 pkt_len; - struct ieee80211_hdr *ieee_hdr; - - if (!skb) - return -1; - - if (!priv->mgmt_frame_mask || - priv->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) { - mwifiex_dbg(priv->adapter, ERROR, - "do not receive mgmt frames on uninitialized intf"); - return -1; - } - - rx_pd = (struct rxpd *)skb->data; - - skb_pull(skb, le16_to_cpu(rx_pd->rx_pkt_offset)); - skb_pull(skb, sizeof(pkt_len)); - - pkt_len = le16_to_cpu(rx_pd->rx_pkt_length); - - ieee_hdr = (void *)skb->data; - if (ieee80211_is_mgmt(ieee_hdr->frame_control)) { - if (mwifiex_parse_mgmt_packet(priv, (u8 *)ieee_hdr, - pkt_len, rx_pd)) - return -1; - } - /* Remove address4 */ - memmove(skb->data + sizeof(struct ieee80211_hdr_3addr), - skb->data + sizeof(struct ieee80211_hdr), - pkt_len - sizeof(struct ieee80211_hdr)); - - pkt_len -= ETH_ALEN + sizeof(pkt_len); - rx_pd->rx_pkt_length = cpu_to_le16(pkt_len); - - cfg80211_rx_mgmt(&priv->wdev, priv->roc_cfg.chan.center_freq, - CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len, - 0); - - return 0; -} - -/* - * This function processes the received packet before sending it to the - * kernel. - * - * It extracts the SKB from the received buffer and sends it to kernel. - * In case the received buffer does not contain the data in SKB format, - * the function creates a blank SKB, fills it with the data from the - * received buffer and then sends this new SKB to the kernel. - */ -int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb) -{ - struct mwifiex_sta_node *src_node; - struct ethhdr *p_ethhdr; - - if (!skb) - return -1; - - priv->stats.rx_bytes += skb->len; - priv->stats.rx_packets++; - - if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { - p_ethhdr = (void *)skb->data; - src_node = mwifiex_get_sta_entry(priv, p_ethhdr->h_source); - if (src_node) { - src_node->stats.last_rx = jiffies; - src_node->stats.rx_bytes += skb->len; - src_node->stats.rx_packets++; - } - } - - skb->dev = priv->netdev; - skb->protocol = eth_type_trans(skb, priv->netdev); - skb->ip_summed = CHECKSUM_NONE; - - /* This is required only in case of 11n and USB/PCIE as we alloc - * a buffer of 4K only if its 11N (to be able to receive 4K - * AMSDU packets). In case of SD we allocate buffers based - * on the size of packet and hence this is not needed. - * - * Modifying the truesize here as our allocation for each - * skb is 4K but we only receive 2K packets and this cause - * the kernel to start dropping packets in case where - * application has allocated buffer based on 2K size i.e. - * if there a 64K packet received (in IP fragments and - * application allocates 64K to receive this packet but - * this packet would almost double up because we allocate - * each 1.5K fragment in 4K and pass it up. As soon as the - * 64K limit hits kernel will start to drop rest of the - * fragments. Currently we fail the Filesndl-ht.scr script - * for UDP, hence this fix - */ - if ((priv->adapter->iface_type == MWIFIEX_USB || - priv->adapter->iface_type == MWIFIEX_PCIE) && - (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE)) - skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE); - - if (in_interrupt()) - netif_rx(skb); - else - netif_rx_ni(skb); - - return 0; -} - -/* - * IOCTL completion callback handler. - * - * This function is called when a pending IOCTL is completed. - * - * If work queue support is enabled, the function wakes up the - * corresponding waiting function. Otherwise, it processes the - * IOCTL response and frees the response buffer. - */ -int mwifiex_complete_cmd(struct mwifiex_adapter *adapter, - struct cmd_ctrl_node *cmd_node) -{ - WARN_ON(!cmd_node->wait_q_enabled); - mwifiex_dbg(adapter, CMD, "cmd completed: status=%d\n", - adapter->cmd_wait_q.status); - - *cmd_node->condition = true; - wake_up_interruptible(&adapter->cmd_wait_q.wait); - - return 0; -} - -/* This function will return the pointer to station entry in station list - * table which matches specified mac address. - * This function should be called after acquiring RA list spinlock. - * NULL is returned if station entry is not found in associated STA list. - */ -struct mwifiex_sta_node * -mwifiex_get_sta_entry(struct mwifiex_private *priv, const u8 *mac) -{ - struct mwifiex_sta_node *node; - - if (!mac) - return NULL; - - list_for_each_entry(node, &priv->sta_list, list) { - if (!memcmp(node->mac_addr, mac, ETH_ALEN)) - return node; - } - - return NULL; -} - -static struct mwifiex_sta_node * -mwifiex_get_tdls_sta_entry(struct mwifiex_private *priv, u8 status) -{ - struct mwifiex_sta_node *node; - - list_for_each_entry(node, &priv->sta_list, list) { - if (node->tdls_status == status) - return node; - } - - return NULL; -} - -/* If tdls channel switching is on-going, tx data traffic should be - * blocked until the switching stage completed. - */ -u8 mwifiex_is_tdls_chan_switching(struct mwifiex_private *priv) -{ - struct mwifiex_sta_node *sta_ptr; - - if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) - return false; - - sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_CHAN_SWITCHING); - if (sta_ptr) - return true; - - return false; -} - -u8 mwifiex_is_tdls_off_chan(struct mwifiex_private *priv) -{ - struct mwifiex_sta_node *sta_ptr; - - if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) - return false; - - sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_IN_OFF_CHAN); - if (sta_ptr) - return true; - - return false; -} - -/* If tdls channel switching is on-going or tdls operate on off-channel, - * cmd path should be blocked until tdls switched to base-channel. - */ -u8 mwifiex_is_send_cmd_allowed(struct mwifiex_private *priv) -{ - if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) - return true; - - if (mwifiex_is_tdls_chan_switching(priv) || - mwifiex_is_tdls_off_chan(priv)) - return false; - - return true; -} - -/* This function will add a sta_node entry to associated station list - * table with the given mac address. - * If entry exist already, existing entry is returned. - * If received mac address is NULL, NULL is returned. - */ -struct mwifiex_sta_node * -mwifiex_add_sta_entry(struct mwifiex_private *priv, const u8 *mac) -{ - struct mwifiex_sta_node *node; - unsigned long flags; - - if (!mac) - return NULL; - - spin_lock_irqsave(&priv->sta_list_spinlock, flags); - node = mwifiex_get_sta_entry(priv, mac); - if (node) - goto done; - - node = kzalloc(sizeof(*node), GFP_ATOMIC); - if (!node) - goto done; - - memcpy(node->mac_addr, mac, ETH_ALEN); - list_add_tail(&node->list, &priv->sta_list); - -done: - spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); - return node; -} - -/* This function will search for HT IE in association request IEs - * and set station HT parameters accordingly. - */ -void -mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies, - int ies_len, struct mwifiex_sta_node *node) -{ - struct ieee_types_header *ht_cap_ie; - const struct ieee80211_ht_cap *ht_cap; - - if (!ies) - return; - - ht_cap_ie = (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, - ies_len); - if (ht_cap_ie) { - ht_cap = (void *)(ht_cap_ie + 1); - node->is_11n_enabled = 1; - node->max_amsdu = le16_to_cpu(ht_cap->cap_info) & - IEEE80211_HT_CAP_MAX_AMSDU ? - MWIFIEX_TX_DATA_BUF_SIZE_8K : - MWIFIEX_TX_DATA_BUF_SIZE_4K; - } else { - node->is_11n_enabled = 0; - } - - return; -} - -/* This function will delete a station entry from station list */ -void mwifiex_del_sta_entry(struct mwifiex_private *priv, const u8 *mac) -{ - struct mwifiex_sta_node *node; - unsigned long flags; - - spin_lock_irqsave(&priv->sta_list_spinlock, flags); - - node = mwifiex_get_sta_entry(priv, mac); - if (node) { - list_del(&node->list); - kfree(node); - } - - spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); - return; -} - -/* This function will delete all stations from associated station list. */ -void mwifiex_del_all_sta_list(struct mwifiex_private *priv) -{ - struct mwifiex_sta_node *node, *tmp; - unsigned long flags; - - spin_lock_irqsave(&priv->sta_list_spinlock, flags); - - list_for_each_entry_safe(node, tmp, &priv->sta_list, list) { - list_del(&node->list); - kfree(node); - } - - INIT_LIST_HEAD(&priv->sta_list); - spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); - return; -} - -/* This function adds histogram data to histogram array*/ -void mwifiex_hist_data_add(struct mwifiex_private *priv, - u8 rx_rate, s8 snr, s8 nflr) -{ - struct mwifiex_histogram_data *phist_data = priv->hist_data; - - if (atomic_read(&phist_data->num_samples) > MWIFIEX_HIST_MAX_SAMPLES) - mwifiex_hist_data_reset(priv); - mwifiex_hist_data_set(priv, rx_rate, snr, nflr); -} - -/* function to add histogram record */ -void mwifiex_hist_data_set(struct mwifiex_private *priv, u8 rx_rate, s8 snr, - s8 nflr) -{ - struct mwifiex_histogram_data *phist_data = priv->hist_data; - - atomic_inc(&phist_data->num_samples); - atomic_inc(&phist_data->rx_rate[rx_rate]); - atomic_inc(&phist_data->snr[snr]); - atomic_inc(&phist_data->noise_flr[128 + nflr]); - atomic_inc(&phist_data->sig_str[nflr - snr]); -} - -/* function to reset histogram data during init/reset */ -void mwifiex_hist_data_reset(struct mwifiex_private *priv) -{ - int ix; - struct mwifiex_histogram_data *phist_data = priv->hist_data; - - atomic_set(&phist_data->num_samples, 0); - for (ix = 0; ix < MWIFIEX_MAX_AC_RX_RATES; ix++) - atomic_set(&phist_data->rx_rate[ix], 0); - for (ix = 0; ix < MWIFIEX_MAX_SNR; ix++) - atomic_set(&phist_data->snr[ix], 0); - for (ix = 0; ix < MWIFIEX_MAX_NOISE_FLR; ix++) - atomic_set(&phist_data->noise_flr[ix], 0); - for (ix = 0; ix < MWIFIEX_MAX_SIG_STRENGTH; ix++) - atomic_set(&phist_data->sig_str[ix], 0); -} - -void *mwifiex_alloc_dma_align_buf(int rx_len, gfp_t flags) -{ - struct sk_buff *skb; - int buf_len, pad; - - buf_len = rx_len + MWIFIEX_RX_HEADROOM + MWIFIEX_DMA_ALIGN_SZ; - - skb = __dev_alloc_skb(buf_len, flags); - - if (!skb) - return NULL; - - skb_reserve(skb, MWIFIEX_RX_HEADROOM); - - pad = MWIFIEX_ALIGN_ADDR(skb->data, MWIFIEX_DMA_ALIGN_SZ) - - (long)skb->data; - - skb_reserve(skb, pad); - - return skb; -} -EXPORT_SYMBOL_GPL(mwifiex_alloc_dma_align_buf); |