/*
* This function informs the CFG802.11 subsystem of a new IBSS.
*
* The following information are sent to the CFG802.11 subsystem
* to register the new IBSS. If we do not register the new IBSS,
* a kernel panic will result.
* - SSID
* - SSID length
* - BSSID
* - Channel
*/
static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
{
struct ieee80211_channel *chan;
struct mwifiex_bss_info bss_info;
struct cfg80211_bss *bss;
int ie_len;
u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
enum ieee80211_band band;
if (mwifiex_get_bss_info(priv, &bss_info))
return -1;
ie_buf[0] = WLAN_EID_SSID;
ie_buf[1] = bss_info.ssid.ssid_len;
memcpy(&ie_buf[sizeof(struct ieee_types_header)],
&bss_info.ssid.ssid, bss_info.ssid.ssid_len);
ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
chan = __ieee80211_get_channel(priv->wdev->wiphy,
ieee80211_channel_to_frequency(bss_info.bss_chan,
band));
bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
0, ie_buf, ie_len, 0, GFP_KERNEL);
cfg80211_put_bss(bss);
memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
return 0;
}
/*
* IOCTL request handler to change Ad-Hoc channel.
*
* This function allocates the IOCTL request buffer, fills it
* with requisite parameters and calls the IOCTL handler.
*
* The function follows the following steps to perform the change -
* - Get current IBSS information
* - Get current channel
* - If no change is required, return
* - If not connected, change channel and return
* - If connected,
* - Disconnect
* - Change channel
* - Perform specific SSID scan with same SSID
* - Start/Join the IBSS
*/
int
mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, int channel)
{
int ret;
struct mwifiex_bss_info bss_info;
struct mwifiex_ssid_bssid ssid_bssid;
u16 curr_chan = 0;
memset(&bss_info, 0, sizeof(bss_info));
/* Get BSS information */
if (mwifiex_get_bss_info(priv, &bss_info))
return -1;
/* Get current channel */
ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_GET,
&curr_chan);
if (curr_chan == channel) {
ret = 0;
goto done;
}
dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
curr_chan, channel);
if (!bss_info.media_connected) {
ret = 0;
goto done;
}
/* Do disonnect */
memset(&ssid_bssid, 0, ETH_ALEN);
ret = mwifiex_deauthenticate(priv, ssid_bssid.bssid);
ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_SET,
(u16 *) &channel);
/* Do specific SSID scanning */
if (mwifiex_request_scan(priv, &bss_info.ssid)) {
ret = -1;
goto done;
}
/* Start/Join Adhoc network */
memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
memcpy(&ssid_bssid.ssid, &bss_info.ssid,
sizeof(struct mwifiex_802_11_ssid));
ret = mwifiex_bss_start(priv, &ssid_bssid);
done:
return ret;
}
/*
* Proc info file read handler.
*
* This function is called when the 'info' file is opened for reading.
* It prints the following driver related information -
* - Driver name
* - Driver version
* - Driver extended version
* - Interface name
* - BSS mode
* - Media state (connected or disconnected)
* - MAC address
* - Total number of Tx bytes
* - Total number of Rx bytes
* - Total number of Tx packets
* - Total number of Rx packets
* - Total number of dropped Tx packets
* - Total number of dropped Rx packets
* - Total number of corrupted Tx packets
* - Total number of corrupted Rx packets
* - Carrier status (on or off)
* - Tx queue status (started or stopped)
*
* For STA mode drivers, it also prints the following extra -
* - ESSID
* - BSSID
* - Channel
* - Region code
* - Multicast count
* - Multicast addresses
*/
static ssize_t
mwifiex_info_read(struct file *file, char __user *ubuf,
size_t count, loff_t *ppos)
{
struct mwifiex_private *priv =
(struct mwifiex_private *) file->private_data;
struct net_device *netdev = priv->netdev;
struct netdev_hw_addr *ha;
struct netdev_queue *txq;
unsigned long page = get_zeroed_page(GFP_KERNEL);
char *p = (char *) page, fmt[64];
struct mwifiex_bss_info info;
ssize_t ret;
int i = 0;
if (!p)
return -ENOMEM;
memset(&info, 0, sizeof(info));
ret = mwifiex_get_bss_info(priv, &info);
if (ret)
goto free_and_exit;
mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);
if (!priv->version_str[0])
mwifiex_get_ver_ext(priv);
p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
p += sprintf(p, "driver_version = %s", fmt);
p += sprintf(p, "\nverext = %s", priv->version_str);
p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name);
if (info.bss_mode >= ARRAY_SIZE(bss_modes))
p += sprintf(p, "bss_mode=\"%d\"\n", info.bss_mode);
else
p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]);
p += sprintf(p, "media_state=\"%s\"\n",
(!priv->media_connected ? "Disconnected" : "Connected"));
p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr);
if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
p += sprintf(p, "multicast_count=\"%d\"\n",
netdev_mc_count(netdev));
p += sprintf(p, "essid=\"%s\"\n", info.ssid.ssid);
p += sprintf(p, "bssid=\"%pM\"\n", info.bssid);
p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan);
p += sprintf(p, "country_code = \"%s\"\n", info.country_code);
netdev_for_each_mc_addr(ha, netdev)
p += sprintf(p, "multicast_address[%d]=\"%pM\"\n",
i++, ha->addr);
}
p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes);
p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes);
p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets);
p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets);
p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped);
p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped);
p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors);
p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors);
p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev))
? "on" : "off"));
p += sprintf(p, "tx queue");
for (i = 0; i < netdev->num_tx_queues; i++) {
txq = netdev_get_tx_queue(netdev, i);
p += sprintf(p, " %d:%s", i, netif_tx_queue_stopped(txq) ?
"stopped" : "started");
}
p += sprintf(p, "\n");
ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
(unsigned long) p - page);
free_and_exit:
free_page(page);
return ret;
}
int
mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, u16 channel)
{
int ret;
struct mwifiex_bss_info bss_info;
struct mwifiex_ssid_bssid ssid_bssid;
u16 curr_chan = 0;
struct cfg80211_bss *bss = NULL;
struct ieee80211_channel *chan;
enum ieee80211_band band;
memset(&bss_info, 0, sizeof(bss_info));
if (mwifiex_get_bss_info(priv, &bss_info))
return -1;
ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_GET,
&curr_chan);
if (curr_chan == channel) {
ret = 0;
goto done;
}
dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
curr_chan, channel);
if (!bss_info.media_connected) {
ret = 0;
goto done;
}
memset(&ssid_bssid, 0, ETH_ALEN);
ret = mwifiex_deauthenticate(priv, ssid_bssid.bssid);
ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_SET,
&channel);
if (mwifiex_request_scan(priv, &bss_info.ssid)) {
ret = -1;
goto done;
}
band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
chan = __ieee80211_get_channel(priv->wdev->wiphy,
ieee80211_channel_to_frequency(channel,
band));
bss = cfg80211_get_bss(priv->wdev->wiphy, chan, bss_info.bssid,
bss_info.ssid.ssid, bss_info.ssid.ssid_len,
WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
if (!bss)
wiphy_warn(priv->wdev->wiphy, "assoc: bss %pM not in scan results\n",
bss_info.bssid);
ret = mwifiex_bss_start(priv, bss, &bss_info.ssid);
done:
return ret;
}