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android-kvm / linux / d41ced01f21ddd2c3a01531bb9edf6c41064e9fc / . / drivers / net / wireless / mwifiex / join.c
blob: 8f9382b9c3cabf0f75285a3935fca48238d3dd96 [file] [log] [blame]
/*
* Marvell Wireless LAN device driver: association and ad-hoc start/join
*
* Copyright (C) 2011, 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"
#define CAPINFO_MASK (~(BIT(15) | BIT(14) | BIT(12) | BIT(11) | BIT(9)))
/*
* Append a generic IE as a pass through TLV to a TLV buffer.
*
* This function is called from the network join command preparation routine.
*
* If the IE buffer has been setup by the application, this routine appends
* the buffer as a pass through TLV type to the request.
*/
static int
mwifiex_cmd_append_generic_ie(struct mwifiex_private *priv, u8 **buffer)
{
int ret_len = 0;
struct mwifiex_ie_types_header ie_header;
/* Null Checks */
if (!buffer)
return 0;
if (!(*buffer))
return 0;
/*
* If there is a generic ie buffer setup, append it to the return
* parameter buffer pointer.
*/
if (priv->gen_ie_buf_len) {
dev_dbg(priv->adapter->dev,
"info: %s: append generic ie len %d to %p\n",
__func__, priv->gen_ie_buf_len, *buffer);
/* Wrap the generic IE buffer with a pass through TLV type */
ie_header.type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
ie_header.len = cpu_to_le16(priv->gen_ie_buf_len);
memcpy(*buffer, &ie_header, sizeof(ie_header));
/* Increment the return size and the return buffer pointer
param */
*buffer += sizeof(ie_header);
ret_len += sizeof(ie_header);
/* Copy the generic IE buffer to the output buffer, advance
pointer */
memcpy(*buffer, priv->gen_ie_buf, priv->gen_ie_buf_len);
/* Increment the return size and the return buffer pointer
param */
*buffer += priv->gen_ie_buf_len;
ret_len += priv->gen_ie_buf_len;
/* Reset the generic IE buffer */
priv->gen_ie_buf_len = 0;
}
/* return the length appended to the buffer */
return ret_len;
}
/*
* Append TSF tracking info from the scan table for the target AP.
*
* This function is called from the network join command preparation routine.
*
* The TSF table TSF sent to the firmware contains two TSF values:
* - The TSF of the target AP from its previous beacon/probe response
* - The TSF timestamp of our local MAC at the time we observed the
* beacon/probe response.
*
* The firmware uses the timestamp values to set an initial TSF value
* in the MAC for the new association after a reassociation attempt.
*/
static int
mwifiex_cmd_append_tsf_tlv(struct mwifiex_private *priv, u8 **buffer,
struct mwifiex_bssdescriptor *bss_desc)
{
struct mwifiex_ie_types_tsf_timestamp tsf_tlv;
__le64 tsf_val;
/* Null Checks */
if (buffer == NULL)
return 0;
if (*buffer == NULL)
return 0;
memset(&tsf_tlv, 0x00, sizeof(struct mwifiex_ie_types_tsf_timestamp));
tsf_tlv.header.type = cpu_to_le16(TLV_TYPE_TSFTIMESTAMP);
tsf_tlv.header.len = cpu_to_le16(2 * sizeof(tsf_val));
memcpy(*buffer, &tsf_tlv, sizeof(tsf_tlv.header));
*buffer += sizeof(tsf_tlv.header);
/* TSF at the time when beacon/probe_response was received */
tsf_val = cpu_to_le64(bss_desc->network_tsf);
memcpy(*buffer, &tsf_val, sizeof(tsf_val));
*buffer += sizeof(tsf_val);
memcpy(&tsf_val, bss_desc->time_stamp, sizeof(tsf_val));
dev_dbg(priv->adapter->dev,
"info: %s: TSF offset calc: %016llx - %016llx\n",
__func__, tsf_val, bss_desc->network_tsf);
memcpy(*buffer, &tsf_val, sizeof(tsf_val));
*buffer += sizeof(tsf_val);
return sizeof(tsf_tlv.header) + (2 * sizeof(tsf_val));
}
/*
* This function finds out the common rates between rate1 and rate2.
*
* It will fill common rates in rate1 as output if found.
*
* NOTE: Setting the MSB of the basic rates needs to be taken
* care of, either before or after calling this function.
*/
static int mwifiex_get_common_rates(struct mwifiex_private *priv, u8 *rate1,
u32 rate1_size, u8 *rate2, u32 rate2_size)
{
int ret;
u8 *ptr = rate1, *tmp;
u32 i, j;
tmp = kmemdup(rate1, rate1_size, GFP_KERNEL);
if (!tmp) {
dev_err(priv->adapter->dev, "failed to alloc tmp buf\n");
return -ENOMEM;
}
memset(rate1, 0, rate1_size);
for (i = 0; rate2[i] && i < rate2_size; i++) {
for (j = 0; tmp[j] && j < rate1_size; j++) {
/* Check common rate, excluding the bit for
basic rate */
if ((rate2[i] & 0x7F) == (tmp[j] & 0x7F)) {
*rate1++ = tmp[j];
break;
}
}
}
dev_dbg(priv->adapter->dev, "info: Tx data rate set to %#x\n",
priv->data_rate);
if (!priv->is_data_rate_auto) {
while (*ptr) {
if ((*ptr & 0x7f) == priv->data_rate) {
ret = 0;
goto done;
}
ptr++;
}
dev_err(priv->adapter->dev, "previously set fixed data rate %#x"
" is not compatible with the network\n",
priv->data_rate);
ret = -1;
goto done;
}
ret = 0;
done:
kfree(tmp);
return ret;
}
/*
* This function creates the intersection of the rates supported by a
* target BSS and our adapter settings for use in an assoc/join command.
*/
static int
mwifiex_setup_rates_from_bssdesc(struct mwifiex_private *priv,
struct mwifiex_bssdescriptor *bss_desc,
u8 *out_rates, u32 *out_rates_size)
{
u8 card_rates[MWIFIEX_SUPPORTED_RATES];
u32 card_rates_size;
/* Copy AP supported rates */
memcpy(out_rates, bss_desc->supported_rates, MWIFIEX_SUPPORTED_RATES);
/* Get the STA supported rates */
card_rates_size = mwifiex_get_active_data_rates(priv, card_rates);
/* Get the common rates between AP and STA supported rates */
if (mwifiex_get_common_rates(priv, out_rates, MWIFIEX_SUPPORTED_RATES,
card_rates, card_rates_size)) {
*out_rates_size = 0;
dev_err(priv->adapter->dev, "%s: cannot get common rates\n",
__func__);
return -1;
}
*out_rates_size =
min_t(size_t, strlen(out_rates), MWIFIEX_SUPPORTED_RATES);
return 0;
}
/*
* This function appends a WAPI IE.
*
* This function is called from the network join command preparation routine.
*
* If the IE buffer has been setup by the application, this routine appends
* the buffer as a WAPI TLV type to the request.
*/
static int
mwifiex_cmd_append_wapi_ie(struct mwifiex_private *priv, u8 **buffer)
{
int retLen = 0;
struct mwifiex_ie_types_header ie_header;
/* Null Checks */
if (buffer == NULL)
return 0;
if (*buffer == NULL)
return 0;
/*
* If there is a wapi ie buffer setup, append it to the return
* parameter buffer pointer.
*/
if (priv->wapi_ie_len) {
dev_dbg(priv->adapter->dev, "cmd: append wapi ie %d to %p\n",
priv->wapi_ie_len, *buffer);
/* Wrap the generic IE buffer with a pass through TLV type */
ie_header.type = cpu_to_le16(TLV_TYPE_WAPI_IE);
ie_header.len = cpu_to_le16(priv->wapi_ie_len);
memcpy(*buffer, &ie_header, sizeof(ie_header));
/* Increment the return size and the return buffer pointer
param */
*buffer += sizeof(ie_header);
retLen += sizeof(ie_header);
/* Copy the wapi IE buffer to the output buffer, advance
pointer */
memcpy(*buffer, priv->wapi_ie, priv->wapi_ie_len);
/* Increment the return size and the return buffer pointer
param */
*buffer += priv->wapi_ie_len;
retLen += priv->wapi_ie_len;
}
/* return the length appended to the buffer */
return retLen;
}
/*
* This function appends rsn ie tlv for wpa/wpa2 security modes.
* It is called from the network join command preparation routine.
*/
static int mwifiex_append_rsn_ie_wpa_wpa2(struct mwifiex_private *priv,
u8 **buffer)
{
struct mwifiex_ie_types_rsn_param_set *rsn_ie_tlv;
int rsn_ie_len;
if (!buffer || !(*buffer))
return 0;
rsn_ie_tlv = (struct mwifiex_ie_types_rsn_param_set *) (*buffer);
rsn_ie_tlv->header.type = cpu_to_le16((u16) priv->wpa_ie[0]);
rsn_ie_tlv->header.type = cpu_to_le16(
le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
rsn_ie_tlv->header.len = cpu_to_le16((u16) priv->wpa_ie[1]);
rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
& 0x00FF);
if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
le16_to_cpu(rsn_ie_tlv->header.len));
else
return -1;
rsn_ie_len = sizeof(rsn_ie_tlv->header) +
le16_to_cpu(rsn_ie_tlv->header.len);
*buffer += rsn_ie_len;
return rsn_ie_len;
}
/*
* This function prepares command for association.
*
* This sets the following parameters -
* - Peer MAC address
* - Listen interval
* - Beacon interval
* - Capability information
*
* ...and the following TLVs, as required -
* - SSID TLV
* - PHY TLV
* - SS TLV
* - Rates TLV
* - Authentication TLV
* - Channel TLV
* - WPA/WPA2 IE
* - 11n TLV
* - Vendor specific TLV
* - WMM TLV
* - WAPI IE
* - Generic IE
* - TSF TLV
*
* Preparation also includes -
* - Setting command ID and proper size
* - Ensuring correct endian-ness
*/
int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
struct host_cmd_ds_command *cmd,
struct mwifiex_bssdescriptor *bss_desc)
{
struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
struct mwifiex_ie_types_ssid_param_set *ssid_tlv;
struct mwifiex_ie_types_phy_param_set *phy_tlv;
struct mwifiex_ie_types_ss_param_set *ss_tlv;
struct mwifiex_ie_types_rates_param_set *rates_tlv;
struct mwifiex_ie_types_auth_type *auth_tlv;
struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
u8 rates[MWIFIEX_SUPPORTED_RATES];
u32 rates_size;
u16 tmp_cap;
u8 *pos;
int rsn_ie_len = 0;
pos = (u8 *) assoc;
mwifiex_cfg_tx_buf(priv, bss_desc);
cmd->command = cpu_to_le16(HostCmd_CMD_802_11_ASSOCIATE);
/* Save so we know which BSS Desc to use in the response handler */
priv->attempted_bss_desc = bss_desc;
memcpy(assoc->peer_sta_addr,
bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
pos += sizeof(assoc->peer_sta_addr);
/* Set the listen interval */
assoc->listen_interval = cpu_to_le16(priv->listen_interval);
/* Set the beacon period */
assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
pos += sizeof(assoc->cap_info_bitmap);
pos += sizeof(assoc->listen_interval);
pos += sizeof(assoc->beacon_period);
pos += sizeof(assoc->dtim_period);
ssid_tlv = (struct mwifiex_ie_types_ssid_param_set *) pos;
ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
ssid_tlv->header.len = cpu_to_le16((u16) bss_desc->ssid.ssid_len);
memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
le16_to_cpu(ssid_tlv->header.len));
pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
phy_tlv = (struct mwifiex_ie_types_phy_param_set *) pos;
phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
memcpy(&phy_tlv->fh_ds.ds_param_set,
&bss_desc->phy_param_set.ds_param_set.current_chan,
sizeof(phy_tlv->fh_ds.ds_param_set));
pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
ss_tlv = (struct mwifiex_ie_types_ss_param_set *) pos;
ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
/* Get the common rates supported between the driver and the BSS Desc */
if (mwifiex_setup_rates_from_bssdesc
(priv, bss_desc, rates, &rates_size))
return -1;
/* Save the data rates into Current BSS state structure */
priv->curr_bss_params.num_of_rates = rates_size;
memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
/* Setup the Rates TLV in the association command */
rates_tlv = (struct mwifiex_ie_types_rates_param_set *) pos;
rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
rates_tlv->header.len = cpu_to_le16((u16) rates_size);
memcpy(rates_tlv->rates, rates, rates_size);
pos += sizeof(rates_tlv->header) + rates_size;
dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: rates size = %d\n",
rates_size);
/* Add the Authentication type to be used for Auth frames */
auth_tlv = (struct mwifiex_ie_types_auth_type *) pos;
auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
if (priv->sec_info.wep_enabled)
auth_tlv->auth_type = cpu_to_le16(
(u16) priv->sec_info.authentication_mode);
else
auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
if (IS_SUPPORT_MULTI_BANDS(priv->adapter) &&
!(ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
(!bss_desc->disable_11n) &&
(priv->adapter->config_bands & BAND_GN ||
priv->adapter->config_bands & BAND_AN) &&
(bss_desc->bcn_ht_cap)
)
) {
/* Append a channel TLV for the channel the attempted AP was
found on */
chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
chan_tlv->header.len =
cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
memset(chan_tlv->chan_scan_param, 0x00,
sizeof(struct mwifiex_chan_scan_param_set));
chan_tlv->chan_scan_param[0].chan_number =
(bss_desc->phy_param_set.ds_param_set.current_chan);
dev_dbg(priv->adapter->dev, "info: Assoc: TLV Chan = %d\n",
chan_tlv->chan_scan_param[0].chan_number);
chan_tlv->chan_scan_param[0].radio_type =
mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
dev_dbg(priv->adapter->dev, "info: Assoc: TLV Band = %d\n",
chan_tlv->chan_scan_param[0].radio_type);
pos += sizeof(chan_tlv->header) +
sizeof(struct mwifiex_chan_scan_param_set);
}
if (!priv->wps.session_enable) {
if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
if (rsn_ie_len == -1)
return -1;
}
if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
(!bss_desc->disable_11n) &&
(priv->adapter->config_bands & BAND_GN ||
priv->adapter->config_bands & BAND_AN))
mwifiex_cmd_append_11n_tlv(priv, bss_desc, &pos);
/* Append vendor specific IE TLV */
mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_ASSOC, &pos);
mwifiex_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
bss_desc->bcn_ht_cap);
if (priv->sec_info.wapi_enabled && priv->wapi_ie_len)
mwifiex_cmd_append_wapi_ie(priv, &pos);
mwifiex_cmd_append_generic_ie(priv, &pos);
mwifiex_cmd_append_tsf_tlv(priv, &pos, bss_desc);
cmd->size = cpu_to_le16((u16) (pos - (u8 *) assoc) + S_DS_GEN);
/* Set the Capability info at last */
tmp_cap = bss_desc->cap_info_bitmap;
if (priv->adapter->config_bands == BAND_B)
tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
tmp_cap &= CAPINFO_MASK;
dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
tmp_cap, CAPINFO_MASK);
assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
return 0;
}
/*
* Association firmware command response handler
*
* The response buffer for the association command has the following
* memory layout.
*
* For cases where an association response was not received (indicated
* by the CapInfo and AId field):
*
* .------------------------------------------------------------.
* | Header(4 * sizeof(t_u16)): Standard command response hdr |
* .------------------------------------------------------------.
* | cap_info/Error Return(t_u16): |
* | 0xFFFF(-1): Internal error |
* | 0xFFFE(-2): Authentication unhandled message |
* | 0xFFFD(-3): Authentication refused |
* | 0xFFFC(-4): Timeout waiting for AP response |
* .------------------------------------------------------------.
* | status_code(t_u16): |
* | If cap_info is -1: |
* | An internal firmware failure prevented the |
* | command from being processed. The status_code |
* | will be set to 1. |
* | |
* | If cap_info is -2: |
* | An authentication frame was received but was |
* | not handled by the firmware. IEEE Status |
* | code for the failure is returned. |
* | |
* | If cap_info is -3: |
* | An authentication frame was received and the |
* | status_code is the IEEE Status reported in the |
* | response. |
* | |
* | If cap_info is -4: |
* | (1) Association response timeout |
* | (2) Authentication response timeout |
* .------------------------------------------------------------.
* | a_id(t_u16): 0xFFFF |
* .------------------------------------------------------------.
*
*
* For cases where an association response was received, the IEEE
* standard association response frame is returned:
*
* .------------------------------------------------------------.
* | Header(4 * sizeof(t_u16)): Standard command response hdr |
* .------------------------------------------------------------.
* | cap_info(t_u16): IEEE Capability |
* .------------------------------------------------------------.
* | status_code(t_u16): IEEE Status Code |
* .------------------------------------------------------------.
* | a_id(t_u16): IEEE Association ID |
* .------------------------------------------------------------.
* | IEEE IEs(variable): Any received IEs comprising the |
* | remaining portion of a received |
* | association response frame. |
* .------------------------------------------------------------.
*
* For simplistic handling, the status_code field can be used to determine
* an association success (0) or failure (non-zero).
*/
int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
struct host_cmd_ds_command *resp)
{
struct mwifiex_adapter *adapter = priv->adapter;
int ret = 0;
struct ieee_types_assoc_rsp *assoc_rsp;
struct mwifiex_bssdescriptor *bss_desc;
u8 enable_data = true;
assoc_rsp = (struct ieee_types_assoc_rsp *) &resp->params;
priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
sizeof(priv->assoc_rsp_buf));
memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
if (le16_to_cpu(assoc_rsp->status_code)) {
priv->adapter->dbg.num_cmd_assoc_failure++;
dev_err(priv->adapter->dev,
"ASSOC_RESP: failed, status code=%d err=%#x a_id=%#x\n",
le16_to_cpu(assoc_rsp->status_code),
le16_to_cpu(assoc_rsp->cap_info_bitmap),
le16_to_cpu(assoc_rsp->a_id));
ret = le16_to_cpu(assoc_rsp->status_code);
goto done;
}
/* Send a Media Connected event, according to the Spec */
priv->media_connected = true;
priv->adapter->ps_state = PS_STATE_AWAKE;
priv->adapter->pps_uapsd_mode = false;
priv->adapter->tx_lock_flag = false;
/* Set the attempted BSSID Index to current */
bss_desc = priv->attempted_bss_desc;
dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: %s\n",
bss_desc->ssid.ssid);
/* Make a copy of current BSSID descriptor */
memcpy(&priv->curr_bss_params.bss_descriptor,
bss_desc, sizeof(struct mwifiex_bssdescriptor));
/* Update curr_bss_params */
priv->curr_bss_params.bss_descriptor.channel
= bss_desc->phy_param_set.ds_param_set.current_chan;
priv->curr_bss_params.band = (u8) bss_desc->bss_band;
if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
priv->curr_bss_params.wmm_enabled = true;
else
priv->curr_bss_params.wmm_enabled = false;
if ((priv->wmm_required || bss_desc->bcn_ht_cap) &&
priv->curr_bss_params.wmm_enabled)
priv->wmm_enabled = true;
else
priv->wmm_enabled = false;
priv->curr_bss_params.wmm_uapsd_enabled = false;
if (priv->wmm_enabled)
priv->curr_bss_params.wmm_uapsd_enabled
= ((bss_desc->wmm_ie.qos_info_bitmap &
IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
priv->curr_pkt_filter);
if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
priv->wpa_is_gtk_set = false;
if (priv->wmm_enabled) {
/* Don't re-enable carrier until we get the WMM_GET_STATUS
event */
enable_data = false;
} else {
/* Since WMM is not enabled, setup the queues with the
defaults */
mwifiex_wmm_setup_queue_priorities(priv, NULL);
mwifiex_wmm_setup_ac_downgrade(priv);
}
if (enable_data)
dev_dbg(priv->adapter->dev,
"info: post association, re-enabling data flow\n");
/* Reset SNR/NF/RSSI values */
priv->data_rssi_last = 0;
priv->data_nf_last = 0;
priv->data_rssi_avg = 0;
priv->data_nf_avg = 0;
priv->bcn_rssi_last = 0;
priv->bcn_nf_last = 0;
priv->bcn_rssi_avg = 0;
priv->bcn_nf_avg = 0;
priv->rxpd_rate = 0;
priv->rxpd_htinfo = 0;
mwifiex_save_curr_bcn(priv);
priv->adapter->dbg.num_cmd_assoc_success++;
dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: associated\n");
/* Add the ra_list here for infra mode as there will be only 1 ra
always */
mwifiex_ralist_add(priv,
priv->curr_bss_params.bss_descriptor.mac_address);
if (!netif_carrier_ok(priv->netdev))
netif_carrier_on(priv->netdev);
if (netif_queue_stopped(priv->netdev))
netif_wake_queue(priv->netdev);
if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
priv->scan_block = true;
done:
/* Need to indicate IOCTL complete */
if (adapter->curr_cmd->wait_q_enabled) {
if (ret)
adapter->cmd_wait_q.status = -1;
else
adapter->cmd_wait_q.status = 0;
}
return ret;
}
/*
* This function prepares command for ad-hoc start.
*
* Driver will fill up SSID, BSS mode, IBSS parameters, physical
* parameters, probe delay, and capability information. Firmware
* will fill up beacon period, basic rates and operational rates.
*
* In addition, the following TLVs are added -
* - Channel TLV
* - Vendor specific IE
* - WPA/WPA2 IE
* - HT Capabilities IE
* - HT Information IE
*
* Preparation also includes -
* - Setting command ID and proper size
* - Ensuring correct endian-ness
*/
int
mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
struct host_cmd_ds_command *cmd,
struct cfg80211_ssid *req_ssid)
{
int rsn_ie_len = 0;
struct mwifiex_adapter *adapter = priv->adapter;
struct host_cmd_ds_802_11_ad_hoc_start *adhoc_start =
&cmd->params.adhoc_start;
struct mwifiex_bssdescriptor *bss_desc;
u32 cmd_append_size = 0;
u32 i;
u16 tmp_cap;
struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
u8 radio_type;
struct mwifiex_ie_types_htcap *ht_cap;
struct mwifiex_ie_types_htinfo *ht_info;
u8 *pos = (u8 *) adhoc_start +
sizeof(struct host_cmd_ds_802_11_ad_hoc_start);
if (!adapter)
return -1;
cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_START);
bss_desc = &priv->curr_bss_params.bss_descriptor;
priv->attempted_bss_desc = bss_desc;
/*
* Fill in the parameters for 2 data structures:
* 1. struct host_cmd_ds_802_11_ad_hoc_start command
* 2. bss_desc
* Driver will fill up SSID, bss_mode,IBSS param, Physical Param,
* probe delay, and Cap info.
* Firmware will fill up beacon period, Basic rates
* and operational rates.
*/
memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
dev_dbg(adapter->dev, "info: ADHOC_S_CMD: SSID = %s\n",
adhoc_start->ssid);
memset(bss_desc->ssid.ssid, 0, IEEE80211_MAX_SSID_LEN);
memcpy(bss_desc->ssid.ssid, req_ssid->ssid, req_ssid->ssid_len);
bss_desc->ssid.ssid_len = req_ssid->ssid_len;
/* Set the BSS mode */
adhoc_start->bss_mode = HostCmd_BSS_MODE_IBSS;
bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
adhoc_start->beacon_period = cpu_to_le16(priv->beacon_period);
bss_desc->beacon_period = priv->beacon_period;
/* Set Physical param set */
/* Parameter IE Id */
#define DS_PARA_IE_ID 3
/* Parameter IE length */
#define DS_PARA_IE_LEN 1
adhoc_start->phy_param_set.ds_param_set.element_id = DS_PARA_IE_ID;
adhoc_start->phy_param_set.ds_param_set.len = DS_PARA_IE_LEN;
if (!mwifiex_get_cfp(priv, adapter->adhoc_start_band,
(u16) priv->adhoc_channel, 0)) {
struct mwifiex_chan_freq_power *cfp;
cfp = mwifiex_get_cfp(priv, adapter->adhoc_start_band,
FIRST_VALID_CHANNEL, 0);
if (cfp)
priv->adhoc_channel = (u8) cfp->channel;
}
if (!priv->adhoc_channel) {
dev_err(adapter->dev, "ADHOC_S_CMD: adhoc_channel cannot be 0\n");
return -1;
}
dev_dbg(adapter->dev, "info: ADHOC_S_CMD: creating ADHOC on channel %d\n",
priv->adhoc_channel);
priv->curr_bss_params.bss_descriptor.channel = priv->adhoc_channel;
priv->curr_bss_params.band = adapter->adhoc_start_band;
bss_desc->channel = priv->adhoc_channel;
adhoc_start->phy_param_set.ds_param_set.current_chan =
priv->adhoc_channel;
memcpy(&bss_desc->phy_param_set, &adhoc_start->phy_param_set,
sizeof(union ieee_types_phy_param_set));
/* Set IBSS param set */
/* IBSS parameter IE Id */
#define IBSS_PARA_IE_ID 6
/* IBSS parameter IE length */
#define IBSS_PARA_IE_LEN 2
adhoc_start->ss_param_set.ibss_param_set.element_id = IBSS_PARA_IE_ID;
adhoc_start->ss_param_set.ibss_param_set.len = IBSS_PARA_IE_LEN;
adhoc_start->ss_param_set.ibss_param_set.atim_window
= cpu_to_le16(priv->atim_window);
memcpy(&bss_desc->ss_param_set, &adhoc_start->ss_param_set,
sizeof(union ieee_types_ss_param_set));
/* Set Capability info */
bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_IBSS;
tmp_cap = le16_to_cpu(adhoc_start->cap_info_bitmap);
tmp_cap &= ~WLAN_CAPABILITY_ESS;
tmp_cap |= WLAN_CAPABILITY_IBSS;
/* Set up privacy in bss_desc */
if (priv->sec_info.encryption_mode) {
/* Ad-Hoc capability privacy on */
dev_dbg(adapter->dev,
"info: ADHOC_S_CMD: wep_status set privacy to WEP\n");
bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
tmp_cap |= WLAN_CAPABILITY_PRIVACY;
} else {
dev_dbg(adapter->dev, "info: ADHOC_S_CMD: wep_status NOT set,"
" setting privacy to ACCEPT ALL\n");
bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
}
memset(adhoc_start->data_rate, 0, sizeof(adhoc_start->data_rate));
mwifiex_get_active_data_rates(priv, adhoc_start->data_rate);
if ((adapter->adhoc_start_band & BAND_G) &&
(priv->curr_pkt_filter & HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON)) {
if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
HostCmd_ACT_GEN_SET, 0,
&priv->curr_pkt_filter)) {
dev_err(adapter->dev,
"ADHOC_S_CMD: G Protection config failed\n");
return -1;
}
}
/* Find the last non zero */
for (i = 0; i < sizeof(adhoc_start->data_rate); i++)
if (!adhoc_start->data_rate[i])
break;
priv->curr_bss_params.num_of_rates = i;
/* Copy the ad-hoc creating rates into Current BSS rate structure */
memcpy(&priv->curr_bss_params.data_rates,
&adhoc_start->data_rate, priv->curr_bss_params.num_of_rates);
dev_dbg(adapter->dev, "info: ADHOC_S_CMD: rates=%02x %02x %02x %02x\n",
adhoc_start->data_rate[0], adhoc_start->data_rate[1],
adhoc_start->data_rate[2], adhoc_start->data_rate[3]);
dev_dbg(adapter->dev, "info: ADHOC_S_CMD: AD-HOC Start command is ready\n");
if (IS_SUPPORT_MULTI_BANDS(adapter)) {
/* Append a channel TLV */
chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
chan_tlv->header.len =
cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
memset(chan_tlv->chan_scan_param, 0x00,
sizeof(struct mwifiex_chan_scan_param_set));
chan_tlv->chan_scan_param[0].chan_number =
(u8) priv->curr_bss_params.bss_descriptor.channel;
dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Chan = %d\n",
chan_tlv->chan_scan_param[0].chan_number);
chan_tlv->chan_scan_param[0].radio_type
= mwifiex_band_to_radio_type(priv->curr_bss_params.band);
if (adapter->adhoc_start_band & BAND_GN ||
adapter->adhoc_start_band & BAND_AN) {
if (adapter->sec_chan_offset ==
IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
chan_tlv->chan_scan_param[0].radio_type |=
(IEEE80211_HT_PARAM_CHA_SEC_ABOVE << 4);
else if (adapter->sec_chan_offset ==
IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
chan_tlv->chan_scan_param[0].radio_type |=
(IEEE80211_HT_PARAM_CHA_SEC_BELOW << 4);
}
dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Band = %d\n",
chan_tlv->chan_scan_param[0].radio_type);
pos += sizeof(chan_tlv->header) +
sizeof(struct mwifiex_chan_scan_param_set);
cmd_append_size +=
sizeof(chan_tlv->header) +
sizeof(struct mwifiex_chan_scan_param_set);
}
/* Append vendor specific IE TLV */
cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
MWIFIEX_VSIE_MASK_ADHOC, &pos);
if (priv->sec_info.wpa_enabled) {
rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
if (rsn_ie_len == -1)
return -1;
cmd_append_size += rsn_ie_len;
}
if (adapter->adhoc_11n_enabled) {
/* Fill HT CAPABILITY */
ht_cap = (struct mwifiex_ie_types_htcap *) pos;
memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
ht_cap->header.len =
cpu_to_le16(sizeof(struct ieee80211_ht_cap));
radio_type = mwifiex_band_to_radio_type(
priv->adapter->config_bands);
mwifiex_fill_cap_info(priv, radio_type, ht_cap);
pos += sizeof(struct mwifiex_ie_types_htcap);
cmd_append_size += sizeof(struct mwifiex_ie_types_htcap);
/* Fill HT INFORMATION */
ht_info = (struct mwifiex_ie_types_htinfo *) pos;
memset(ht_info, 0, sizeof(struct mwifiex_ie_types_htinfo));
ht_info->header.type = cpu_to_le16(WLAN_EID_HT_INFORMATION);
ht_info->header.len =
cpu_to_le16(sizeof(struct ieee80211_ht_info));
ht_info->ht_info.control_chan =
(u8) priv->curr_bss_params.bss_descriptor.channel;
if (adapter->sec_chan_offset) {
ht_info->ht_info.ht_param = adapter->sec_chan_offset;
ht_info->ht_info.ht_param |=
IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
}
ht_info->ht_info.operation_mode =
cpu_to_le16(IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
ht_info->ht_info.basic_set[0] = 0xff;
pos += sizeof(struct mwifiex_ie_types_htinfo);
cmd_append_size +=
sizeof(struct mwifiex_ie_types_htinfo);
}
cmd->size =
cpu_to_le16((u16)(sizeof(struct host_cmd_ds_802_11_ad_hoc_start)
+ S_DS_GEN + cmd_append_size));
if (adapter->adhoc_start_band == BAND_B)
tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
else
tmp_cap |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
adhoc_start->cap_info_bitmap = cpu_to_le16(tmp_cap);
return 0;
}
/*
* This function prepares command for ad-hoc join.
*
* Most of the parameters are set up by copying from the target BSS descriptor
* from the scan response.
*
* In addition, the following TLVs are added -
* - Channel TLV
* - Vendor specific IE
* - WPA/WPA2 IE
* - 11n IE
*
* Preparation also includes -
* - Setting command ID and proper size
* - Ensuring correct endian-ness
*/
int
mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
struct host_cmd_ds_command *cmd,
struct mwifiex_bssdescriptor *bss_desc)
{
int rsn_ie_len = 0;
struct host_cmd_ds_802_11_ad_hoc_join *adhoc_join =
&cmd->params.adhoc_join;
struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
u32 cmd_append_size = 0;
u16 tmp_cap;
u32 i, rates_size = 0;
u16 curr_pkt_filter;
u8 *pos =
(u8 *) adhoc_join +
sizeof(struct host_cmd_ds_802_11_ad_hoc_join);
/* Use G protection */
#define USE_G_PROTECTION 0x02
if (bss_desc->erp_flags & USE_G_PROTECTION) {
curr_pkt_filter =
priv->
curr_pkt_filter | HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON;
if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
HostCmd_ACT_GEN_SET, 0,
&curr_pkt_filter)) {
dev_err(priv->adapter->dev,
"ADHOC_J_CMD: G Protection config failed\n");
return -1;
}
}
priv->attempted_bss_desc = bss_desc;
cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_JOIN);
adhoc_join->bss_descriptor.bss_mode = HostCmd_BSS_MODE_IBSS;
adhoc_join->bss_descriptor.beacon_period
= cpu_to_le16(bss_desc->beacon_period);
memcpy(&adhoc_join->bss_descriptor.bssid,
&bss_desc->mac_address, ETH_ALEN);
memcpy(&adhoc_join->bss_descriptor.ssid,
&bss_desc->ssid.ssid, bss_desc->ssid.ssid_len);
memcpy(&adhoc_join->bss_descriptor.phy_param_set,
&bss_desc->phy_param_set,
sizeof(union ieee_types_phy_param_set));
memcpy(&adhoc_join->bss_descriptor.ss_param_set,
&bss_desc->ss_param_set, sizeof(union ieee_types_ss_param_set));
tmp_cap = bss_desc->cap_info_bitmap;
tmp_cap &= CAPINFO_MASK;
dev_dbg(priv->adapter->dev,
"info: ADHOC_J_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
tmp_cap, CAPINFO_MASK);
/* Information on BSSID descriptor passed to FW */
dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: BSSID=%pM, SSID='%s'\n",
adhoc_join->bss_descriptor.bssid,
adhoc_join->bss_descriptor.ssid);
for (i = 0; bss_desc->supported_rates[i] &&
i < MWIFIEX_SUPPORTED_RATES;
i++)
;
rates_size = i;
/* Copy Data Rates from the Rates recorded in scan response */
memset(adhoc_join->bss_descriptor.data_rates, 0,
sizeof(adhoc_join->bss_descriptor.data_rates));
memcpy(adhoc_join->bss_descriptor.data_rates,
bss_desc->supported_rates, rates_size);
/* Copy the adhoc join rates into Current BSS state structure */
priv->curr_bss_params.num_of_rates = rates_size;
memcpy(&priv->curr_bss_params.data_rates, bss_desc->supported_rates,
rates_size);
/* Copy the channel information */
priv->curr_bss_params.bss_descriptor.channel = bss_desc->channel;
priv->curr_bss_params.band = (u8) bss_desc->bss_band;
if (priv->sec_info.wep_enabled || priv->sec_info.wpa_enabled)
tmp_cap |= WLAN_CAPABILITY_PRIVACY;
if (IS_SUPPORT_MULTI_BANDS(priv->adapter)) {
/* Append a channel TLV */
chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
chan_tlv->header.len =
cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
memset(chan_tlv->chan_scan_param, 0x00,
sizeof(struct mwifiex_chan_scan_param_set));
chan_tlv->chan_scan_param[0].chan_number =
(bss_desc->phy_param_set.ds_param_set.current_chan);
dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Chan=%d\n",
chan_tlv->chan_scan_param[0].chan_number);
chan_tlv->chan_scan_param[0].radio_type =
mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Band=%d\n",
chan_tlv->chan_scan_param[0].radio_type);
pos += sizeof(chan_tlv->header) +
sizeof(struct mwifiex_chan_scan_param_set);
cmd_append_size += sizeof(chan_tlv->header) +
sizeof(struct mwifiex_chan_scan_param_set);
}
if (priv->sec_info.wpa_enabled)
rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
if (rsn_ie_len == -1)
return -1;
cmd_append_size += rsn_ie_len;
if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
cmd_append_size += mwifiex_cmd_append_11n_tlv(priv,
bss_desc, &pos);
/* Append vendor specific IE TLV */
cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
MWIFIEX_VSIE_MASK_ADHOC, &pos);
cmd->size = cpu_to_le16
((u16) (sizeof(struct host_cmd_ds_802_11_ad_hoc_join)
+ S_DS_GEN + cmd_append_size));
adhoc_join->bss_descriptor.cap_info_bitmap = cpu_to_le16(tmp_cap);
return 0;
}
/*
* This function handles the command response of ad-hoc start and
* ad-hoc join.
*
* The function generates a device-connected event to notify
* the applications, in case of successful ad-hoc start/join, and
* saves the beacon buffer.
*/
int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
struct host_cmd_ds_command *resp)
{
int ret = 0;
struct mwifiex_adapter *adapter = priv->adapter;
struct host_cmd_ds_802_11_ad_hoc_result *adhoc_result;
struct mwifiex_bssdescriptor *bss_desc;
adhoc_result = &resp->params.adhoc_result;
bss_desc = priv->attempted_bss_desc;
/* Join result code 0 --> SUCCESS */
if (le16_to_cpu(resp->result)) {
dev_err(priv->adapter->dev, "ADHOC_RESP: failed\n");
if (priv->media_connected)
mwifiex_reset_connect_state(priv);
memset(&priv->curr_bss_params.bss_descriptor,
0x00, sizeof(struct mwifiex_bssdescriptor));
ret = -1;
goto done;
}
/* Send a Media Connected event, according to the Spec */
priv->media_connected = true;
if (le16_to_cpu(resp->command) == HostCmd_CMD_802_11_AD_HOC_START) {
dev_dbg(priv->adapter->dev, "info: ADHOC_S_RESP %s\n",
bss_desc->ssid.ssid);
/* Update the created network descriptor with the new BSSID */
memcpy(bss_desc->mac_address,
adhoc_result->bssid, ETH_ALEN);
priv->adhoc_state = ADHOC_STARTED;
} else {
/*
* Now the join cmd should be successful.
* If BSSID has changed use SSID to compare instead of BSSID
*/
dev_dbg(priv->adapter->dev, "info: ADHOC_J_RESP %s\n",
bss_desc->ssid.ssid);
/*
* Make a copy of current BSSID descriptor, only needed for
* join since the current descriptor is already being used
* for adhoc start
*/
memcpy(&priv->curr_bss_params.bss_descriptor,
bss_desc, sizeof(struct mwifiex_bssdescriptor));
priv->adhoc_state = ADHOC_JOINED;
}
dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: channel = %d\n",
priv->adhoc_channel);
dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: BSSID = %pM\n",
priv->curr_bss_params.bss_descriptor.mac_address);
if (!netif_carrier_ok(priv->netdev))
netif_carrier_on(priv->netdev);
if (netif_queue_stopped(priv->netdev))
netif_wake_queue(priv->netdev);
mwifiex_save_curr_bcn(priv);
done:
/* Need to indicate IOCTL complete */
if (adapter->curr_cmd->wait_q_enabled) {
if (ret)
adapter->cmd_wait_q.status = -1;
else
adapter->cmd_wait_q.status = 0;
}
return ret;
}
/*
* This function associates to a specific BSS discovered in a scan.
*
* It clears any past association response stored for application
* retrieval and calls the command preparation routine to send the
* command to firmware.
*/
int mwifiex_associate(struct mwifiex_private *priv,
struct mwifiex_bssdescriptor *bss_desc)
{
u8 current_bssid[ETH_ALEN];
/* Return error if the adapter or table entry is not marked as infra */
if ((priv->bss_mode != NL80211_IFTYPE_STATION) ||
(bss_desc->bss_mode != NL80211_IFTYPE_STATION))
return -1;
memcpy(&current_bssid,
&priv->curr_bss_params.bss_descriptor.mac_address,
sizeof(current_bssid));
/* Clear any past association response stored for application
retrieval */
priv->assoc_rsp_size = 0;
return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_ASSOCIATE,
HostCmd_ACT_GEN_SET, 0, bss_desc);
}
/*
* This function starts an ad-hoc network.
*
* It calls the command preparation routine to send the command to firmware.
*/
int
mwifiex_adhoc_start(struct mwifiex_private *priv,
struct cfg80211_ssid *adhoc_ssid)
{
dev_dbg(priv->adapter->dev, "info: Adhoc Channel = %d\n",
priv->adhoc_channel);
dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
priv->curr_bss_params.bss_descriptor.channel);
dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %d\n",
priv->curr_bss_params.band);
return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_START,
HostCmd_ACT_GEN_SET, 0, adhoc_ssid);
}
/*
* This function joins an ad-hoc network found in a previous scan.
*
* It calls the command preparation routine to send the command to firmware,
* if already not connected to the requested SSID.
*/
int mwifiex_adhoc_join(struct mwifiex_private *priv,
struct mwifiex_bssdescriptor *bss_desc)
{
dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid =%s\n",
priv->curr_bss_params.bss_descriptor.ssid.ssid);
dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid_len =%u\n",
priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
dev_dbg(priv->adapter->dev, "info: adhoc join: ssid =%s\n",
bss_desc->ssid.ssid);
dev_dbg(priv->adapter->dev, "info: adhoc join: ssid_len =%u\n",
bss_desc->ssid.ssid_len);
/* Check if the requested SSID is already joined */
if (priv->curr_bss_params.bss_descriptor.ssid.ssid_len &&
!mwifiex_ssid_cmp(&bss_desc->ssid,
&priv->curr_bss_params.bss_descriptor.ssid) &&
(priv->curr_bss_params.bss_descriptor.bss_mode ==
NL80211_IFTYPE_ADHOC)) {
dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: new ad-hoc SSID"
" is the same as current; not attempting to re-join\n");
return -1;
}
dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
priv->curr_bss_params.bss_descriptor.channel);
dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %c\n",
priv->curr_bss_params.band);
return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_JOIN,
HostCmd_ACT_GEN_SET, 0, bss_desc);
}
/*
* This function deauthenticates/disconnects from infra network by sending
* deauthentication request.
*/
static int mwifiex_deauthenticate_infra(struct mwifiex_private *priv, u8 *mac)
{
u8 mac_address[ETH_ALEN];
int ret;
u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
if (mac) {
if (!memcmp(mac, zero_mac, sizeof(zero_mac)))
memcpy((u8 *) &mac_address,
(u8 *) &priv->curr_bss_params.bss_descriptor.
mac_address, ETH_ALEN);
else
memcpy((u8 *) &mac_address, (u8 *) mac, ETH_ALEN);
} else {
memcpy((u8 *) &mac_address, (u8 *) &priv->curr_bss_params.
bss_descriptor.mac_address, ETH_ALEN);
}
ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
HostCmd_ACT_GEN_SET, 0, &mac_address);
return ret;
}
/*
* This function deauthenticates/disconnects from a BSS.
*
* In case of infra made, it sends deauthentication request, and
* in case of ad-hoc mode, a stop network request is sent to the firmware.
*/
int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac)
{
int ret = 0;
if (priv->media_connected) {
if (priv->bss_mode == NL80211_IFTYPE_STATION) {
ret = mwifiex_deauthenticate_infra(priv, mac);
} else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
ret = mwifiex_send_cmd_sync(priv,
HostCmd_CMD_802_11_AD_HOC_STOP,
HostCmd_ACT_GEN_SET, 0, NULL);
}
}
return ret;
}
EXPORT_SYMBOL_GPL(mwifiex_deauthenticate);
/*
* This function converts band to radio type used in channel TLV.
*/
u8
mwifiex_band_to_radio_type(u8 band)
{
switch (band) {
case BAND_A:
case BAND_AN:
case BAND_A | BAND_AN:
return HostCmd_SCAN_RADIO_TYPE_A;
case BAND_B:
case BAND_G:
case BAND_B | BAND_G:
default:
return HostCmd_SCAN_RADIO_TYPE_BG;
}
}