diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/11h.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/11h.c | 319 |
1 files changed, 0 insertions, 319 deletions
diff --git a/drivers/net/wireless/mwifiex/11h.c b/drivers/net/wireless/mwifiex/11h.c deleted file mode 100644 index 71a1b5807..000000000 --- a/drivers/net/wireless/mwifiex/11h.c +++ /dev/null @@ -1,319 +0,0 @@ -/* - * Marvell Wireless LAN device driver: 802.11h - * - * Copyright (C) 2013-2014, 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 "main.h" -#include "fw.h" - - -void mwifiex_init_11h_params(struct mwifiex_private *priv) -{ - priv->state_11h.is_11h_enabled = true; - priv->state_11h.is_11h_active = false; -} - -inline int mwifiex_is_11h_active(struct mwifiex_private *priv) -{ - return priv->state_11h.is_11h_active; -} -/* This function appends 11h info to a buffer while joining an - * infrastructure BSS - */ -static void -mwifiex_11h_process_infra_join(struct mwifiex_private *priv, u8 **buffer, - struct mwifiex_bssdescriptor *bss_desc) -{ - struct mwifiex_ie_types_header *ie_header; - struct mwifiex_ie_types_pwr_capability *cap; - struct mwifiex_ie_types_local_pwr_constraint *constraint; - struct ieee80211_supported_band *sband; - u8 radio_type; - int i; - - if (!buffer || !(*buffer)) - return; - - radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band); - sband = priv->wdev.wiphy->bands[radio_type]; - - cap = (struct mwifiex_ie_types_pwr_capability *)*buffer; - cap->header.type = cpu_to_le16(WLAN_EID_PWR_CAPABILITY); - cap->header.len = cpu_to_le16(2); - cap->min_pwr = 0; - cap->max_pwr = 0; - *buffer += sizeof(*cap); - - constraint = (struct mwifiex_ie_types_local_pwr_constraint *)*buffer; - constraint->header.type = cpu_to_le16(WLAN_EID_PWR_CONSTRAINT); - constraint->header.len = cpu_to_le16(2); - constraint->chan = bss_desc->channel; - constraint->constraint = bss_desc->local_constraint; - *buffer += sizeof(*constraint); - - ie_header = (struct mwifiex_ie_types_header *)*buffer; - ie_header->type = cpu_to_le16(TLV_TYPE_PASSTHROUGH); - ie_header->len = cpu_to_le16(2 * sband->n_channels + 2); - *buffer += sizeof(*ie_header); - *(*buffer)++ = WLAN_EID_SUPPORTED_CHANNELS; - *(*buffer)++ = 2 * sband->n_channels; - for (i = 0; i < sband->n_channels; i++) { - *(*buffer)++ = ieee80211_frequency_to_channel( - sband->channels[i].center_freq); - *(*buffer)++ = 1; /* one channel in the subband */ - } -} - -/* Enable or disable the 11h extensions in the firmware */ -int mwifiex_11h_activate(struct mwifiex_private *priv, bool flag) -{ - u32 enable = flag; - - /* enable master mode radar detection on AP interface */ - if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && enable) - enable |= MWIFIEX_MASTER_RADAR_DET_MASK; - - return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_SNMP_MIB, - HostCmd_ACT_GEN_SET, DOT11H_I, &enable, true); -} - -/* This functions processes TLV buffer for a pending BSS Join command. - * - * Activate 11h functionality in the firmware if the spectrum management - * capability bit is found in the network we are joining. Also, necessary - * TLVs are set based on requested network's 11h capability. - */ -void mwifiex_11h_process_join(struct mwifiex_private *priv, u8 **buffer, - struct mwifiex_bssdescriptor *bss_desc) -{ - if (bss_desc->sensed_11h) { - /* Activate 11h functions in firmware, turns on capability - * bit - */ - mwifiex_11h_activate(priv, true); - priv->state_11h.is_11h_active = true; - bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_SPECTRUM_MGMT; - mwifiex_11h_process_infra_join(priv, buffer, bss_desc); - } else { - /* Deactivate 11h functions in the firmware */ - mwifiex_11h_activate(priv, false); - priv->state_11h.is_11h_active = false; - bss_desc->cap_info_bitmap &= ~WLAN_CAPABILITY_SPECTRUM_MGMT; - } -} - -/* This is DFS CAC work queue function. - * This delayed work emits CAC finished event for cfg80211 if - * CAC was started earlier. - */ -void mwifiex_dfs_cac_work_queue(struct work_struct *work) -{ - struct cfg80211_chan_def chandef; - struct delayed_work *delayed_work = - container_of(work, struct delayed_work, work); - struct mwifiex_private *priv = - container_of(delayed_work, struct mwifiex_private, - dfs_cac_work); - - if (WARN_ON(!priv)) - return; - - chandef = priv->dfs_chandef; - if (priv->wdev.cac_started) { - mwifiex_dbg(priv->adapter, MSG, - "CAC timer finished; No radar detected\n"); - cfg80211_cac_event(priv->netdev, &chandef, - NL80211_RADAR_CAC_FINISHED, - GFP_KERNEL); - } -} - -/* This function prepares channel report request command to FW for - * starting radar detection. - */ -int mwifiex_cmd_issue_chan_report_request(struct mwifiex_private *priv, - struct host_cmd_ds_command *cmd, - void *data_buf) -{ - struct host_cmd_ds_chan_rpt_req *cr_req = &cmd->params.chan_rpt_req; - struct mwifiex_radar_params *radar_params = (void *)data_buf; - - cmd->command = cpu_to_le16(HostCmd_CMD_CHAN_REPORT_REQUEST); - cmd->size = cpu_to_le16(S_DS_GEN); - le16_add_cpu(&cmd->size, sizeof(struct host_cmd_ds_chan_rpt_req)); - - cr_req->chan_desc.start_freq = cpu_to_le16(MWIFIEX_A_BAND_START_FREQ); - cr_req->chan_desc.chan_num = radar_params->chandef->chan->hw_value; - cr_req->chan_desc.chan_width = radar_params->chandef->width; - cr_req->msec_dwell_time = cpu_to_le32(radar_params->cac_time_ms); - - if (radar_params->cac_time_ms) - mwifiex_dbg(priv->adapter, MSG, - "11h: issuing DFS Radar check for channel=%d\n", - radar_params->chandef->chan->hw_value); - else - mwifiex_dbg(priv->adapter, MSG, "cancelling CAC\n"); - - return 0; -} - -int mwifiex_stop_radar_detection(struct mwifiex_private *priv, - struct cfg80211_chan_def *chandef) -{ - struct mwifiex_radar_params radar_params; - - memset(&radar_params, 0, sizeof(struct mwifiex_radar_params)); - radar_params.chandef = chandef; - radar_params.cac_time_ms = 0; - - return mwifiex_send_cmd(priv, HostCmd_CMD_CHAN_REPORT_REQUEST, - HostCmd_ACT_GEN_SET, 0, &radar_params, true); -} - -/* This function is to abort ongoing CAC upon stopping AP operations - * or during unload. - */ -void mwifiex_abort_cac(struct mwifiex_private *priv) -{ - if (priv->wdev.cac_started) { - if (mwifiex_stop_radar_detection(priv, &priv->dfs_chandef)) - mwifiex_dbg(priv->adapter, ERROR, - "failed to stop CAC in FW\n"); - mwifiex_dbg(priv->adapter, MSG, - "Aborting delayed work for CAC.\n"); - cancel_delayed_work_sync(&priv->dfs_cac_work); - cfg80211_cac_event(priv->netdev, &priv->dfs_chandef, - NL80211_RADAR_CAC_ABORTED, GFP_KERNEL); - } -} - -/* This function handles channel report event from FW during CAC period. - * If radar is detected during CAC, driver indicates the same to cfg80211 - * and also cancels ongoing delayed work. - */ -int mwifiex_11h_handle_chanrpt_ready(struct mwifiex_private *priv, - struct sk_buff *skb) -{ - struct host_cmd_ds_chan_rpt_event *rpt_event; - struct mwifiex_ie_types_chan_rpt_data *rpt; - u8 *evt_buf; - u16 event_len, tlv_len; - - rpt_event = (void *)(skb->data + sizeof(u32)); - event_len = skb->len - (sizeof(struct host_cmd_ds_chan_rpt_event)+ - sizeof(u32)); - - if (le32_to_cpu(rpt_event->result) != HostCmd_RESULT_OK) { - mwifiex_dbg(priv->adapter, ERROR, - "Error in channel report event\n"); - return -1; - } - - evt_buf = (void *)&rpt_event->tlvbuf; - - while (event_len >= sizeof(struct mwifiex_ie_types_header)) { - rpt = (void *)&rpt_event->tlvbuf; - tlv_len = le16_to_cpu(rpt->header.len); - - switch (le16_to_cpu(rpt->header.type)) { - case TLV_TYPE_CHANRPT_11H_BASIC: - if (rpt->map.radar) { - mwifiex_dbg(priv->adapter, MSG, - "RADAR Detected on channel %d!\n", - priv->dfs_chandef.chan->hw_value); - cancel_delayed_work_sync(&priv->dfs_cac_work); - cfg80211_cac_event(priv->netdev, - &priv->dfs_chandef, - NL80211_RADAR_DETECTED, - GFP_KERNEL); - } - break; - default: - break; - } - - evt_buf += (tlv_len + sizeof(rpt->header)); - event_len -= (tlv_len + sizeof(rpt->header)); - } - - return 0; -} - -/* Handler for radar detected event from FW.*/ -int mwifiex_11h_handle_radar_detected(struct mwifiex_private *priv, - struct sk_buff *skb) -{ - struct mwifiex_radar_det_event *rdr_event; - - rdr_event = (void *)(skb->data + sizeof(u32)); - - if (le32_to_cpu(rdr_event->passed)) { - mwifiex_dbg(priv->adapter, MSG, - "radar detected; indicating kernel\n"); - if (mwifiex_stop_radar_detection(priv, &priv->dfs_chandef)) - mwifiex_dbg(priv->adapter, ERROR, - "Failed to stop CAC in FW\n"); - cfg80211_radar_event(priv->adapter->wiphy, &priv->dfs_chandef, - GFP_KERNEL); - mwifiex_dbg(priv->adapter, MSG, "regdomain: %d\n", - rdr_event->reg_domain); - mwifiex_dbg(priv->adapter, MSG, "radar detection type: %d\n", - rdr_event->det_type); - } else { - mwifiex_dbg(priv->adapter, MSG, - "false radar detection event!\n"); - } - - return 0; -} - -/* This is work queue function for channel switch handling. - * This function takes care of updating new channel definitin to - * bss config structure, restart AP and indicate channel switch success - * to cfg80211. - */ -void mwifiex_dfs_chan_sw_work_queue(struct work_struct *work) -{ - struct mwifiex_uap_bss_param *bss_cfg; - struct delayed_work *delayed_work = - container_of(work, struct delayed_work, work); - struct mwifiex_private *priv = - container_of(delayed_work, struct mwifiex_private, - dfs_chan_sw_work); - - if (WARN_ON(!priv)) - return; - - bss_cfg = &priv->bss_cfg; - if (!bss_cfg->beacon_period) { - mwifiex_dbg(priv->adapter, ERROR, - "channel switch: AP already stopped\n"); - return; - } - - mwifiex_uap_set_channel(priv, bss_cfg, priv->dfs_chandef); - - if (mwifiex_config_start_uap(priv, bss_cfg)) { - mwifiex_dbg(priv->adapter, ERROR, - "Failed to start AP after channel switch\n"); - return; - } - - mwifiex_dbg(priv->adapter, MSG, - "indicating channel switch completion to kernel\n"); - cfg80211_ch_switch_notify(priv->netdev, &priv->dfs_chandef); -} |