[PATCH, take 2] libertas: implement SSID scanning for SIOCSIWSCAN
Dan Williams
dcbw at redhat.com
Tue Mar 4 14:38:00 EST 2008
On Tue, 2008-02-26 at 15:22 +0100, Holger Schurig wrote:
> libertas: implement SSID scanning for SIOCSIWSCAN
>
> After my bit scan re-writing the SIOCSIWSCAN wext ioctl no longer supported
> scanning for a specific SSID. However, wpa_supplicant is a possible user of
> this ioctl, so here is code that add's this.
>
> While passing, removed even more of the debugfs-based scanning. You can (and
> should) the SIOCSIWSCAN to ask for scans, so there is no need for
> proprietary interfaces for scanning. And, besides, the scan result couldn't
> be used further, e.g. not for associating.
>
> Signed-off-by: Holger Schurig <hs4233 at mail.mn-solutions.de>
Couldn't reproduce my previous issue; if you could post a new patch on
top of Woodhouse's scan cleanups I'll test that too and ack it.
Dan
> ---
>
> This code change allowed to association to an AP with a hidden SSID
> like this:
>
> $ ifconfig eth1 up
> $ cat wpa_supplicant.conf
> ctrl_interface=/var/run/wpa_supplicant
> network={
> ssid="MNHS"
> scan_ssid=1
> key_mgmt=NONE
> wep_key0="54321"
> wep_tx_keyidx=0
> }
> $ wpa_supplicant -Dwext -ieth1 -cwpa_supplicant.conf
>
> Index: wireless-testing/drivers/net/wireless/libertas/dev.h
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/libertas/dev.h 2008-02-26 15:11:27.000000000 +0100
> +++ wireless-testing/drivers/net/wireless/libertas/dev.h 2008-02-26 15:11:29.000000000 +0100
> @@ -149,6 +149,8 @@ struct lbs_private {
> struct work_struct sync_channel;
> /* remember which channel was scanned last, != 0 if currently scanning */
> int scan_channel;
> + u8 scan_ssid[IW_ESSID_MAX_SIZE + 1];
> + u8 scan_ssid_len;
>
> /** Hardware access */
> int (*hw_host_to_card) (struct lbs_private *priv, u8 type, u8 *payload, u16 nb);
> Index: wireless-testing/drivers/net/wireless/libertas/scan.h
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/libertas/scan.h 2008-02-26 15:11:27.000000000 +0100
> +++ wireless-testing/drivers/net/wireless/libertas/scan.h 2008-02-26 15:11:29.000000000 +0100
> @@ -12,8 +12,6 @@
>
> /**
> * @brief Maximum number of channels that can be sent in a setuserscan ioctl
> - *
> - * @sa lbs_ioctl_user_scan_cfg
> */
> #define LBS_IOCTL_USER_SCAN_CHAN_MAX 50
>
> @@ -68,60 +66,6 @@ struct lbs_scan_cmd_config {
> };
>
> /**
> - * @brief IOCTL channel sub-structure sent in lbs_ioctl_user_scan_cfg
> - *
> - * Multiple instances of this structure are included in the IOCTL command
> - * to configure a instance of a scan on the specific channel.
> - */
> -struct lbs_ioctl_user_scan_chan {
> - u8 channumber; //!< channel Number to scan
> - u8 radiotype; //!< Radio type: 'B/G' band = 0, 'A' band = 1
> - u8 scantype; //!< Scan type: Active = 0, Passive = 1
> - u16 scantime; //!< Scan duration in milliseconds; if 0 default used
> -};
> -
> -/**
> - * @brief IOCTL input structure to configure an immediate scan cmd to firmware
> - *
> - * Used in the setuserscan (LBS_SET_USER_SCAN) private ioctl. Specifies
> - * a number of parameters to be used in general for the scan as well
> - * as a channel list (lbs_ioctl_user_scan_chan) for each scan period
> - * desired.
> - *
> - * @sa lbs_set_user_scan_ioctl
> - */
> -struct lbs_ioctl_user_scan_cfg {
> - /**
> - * @brief BSS type to be sent in the firmware command
> - *
> - * Field can be used to restrict the types of networks returned in the
> - * scan. valid settings are:
> - *
> - * - LBS_SCAN_BSS_TYPE_BSS (infrastructure)
> - * - LBS_SCAN_BSS_TYPE_IBSS (adhoc)
> - * - LBS_SCAN_BSS_TYPE_ANY (unrestricted, adhoc and infrastructure)
> - */
> - u8 bsstype;
> -
> - /**
> - * @brief BSSID filter sent in the firmware command to limit the results
> - */
> - u8 bssid[ETH_ALEN];
> -
> - /* Clear existing scan results matching this BSSID */
> - u8 clear_bssid;
> -
> - /**
> - * @brief SSID filter sent in the firmware command to limit the results
> - */
> - char ssid[IW_ESSID_MAX_SIZE];
> - u8 ssid_len;
> -
> - /* Clear existing scan results matching this SSID */
> - u8 clear_ssid;
> -};
> -
> -/**
> * @brief Structure used to store information for each beacon/probe response
> */
> struct bss_descriptor {
> @@ -177,7 +121,7 @@ int lbs_find_best_network_ssid(struct lb
> u8 *out_ssid_len, u8 preferred_mode, u8 *out_mode);
>
> int lbs_send_specific_ssid_scan(struct lbs_private *priv, u8 *ssid,
> - u8 ssid_len, u8 clear_ssid);
> + u8 ssid_len);
>
> int lbs_cmd_80211_scan(struct lbs_private *priv,
> struct cmd_ds_command *cmd,
> @@ -186,19 +130,10 @@ int lbs_cmd_80211_scan(struct lbs_privat
> int lbs_ret_80211_scan(struct lbs_private *priv,
> struct cmd_ds_command *resp);
>
> -int lbs_scan_networks(struct lbs_private *priv,
> - const struct lbs_ioctl_user_scan_cfg *puserscanin,
> - int full_scan);
> -
> -struct ifreq;
> -
> -struct iw_point;
> -struct iw_param;
> -struct iw_request_info;
> int lbs_get_scan(struct net_device *dev, struct iw_request_info *info,
> struct iw_point *dwrq, char *extra);
> int lbs_set_scan(struct net_device *dev, struct iw_request_info *info,
> - struct iw_param *vwrq, char *extra);
> + union iwreq_data *wrqu, char *extra);
>
> void lbs_scan_worker(struct work_struct *work);
>
> Index: wireless-testing/drivers/net/wireless/libertas/scan.c
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/libertas/scan.c 2008-02-26 15:11:27.000000000 +0100
> +++ wireless-testing/drivers/net/wireless/libertas/scan.c 2008-02-26 15:13:49.000000000 +0100
> @@ -66,7 +66,6 @@ static const u8 bcastmac[ETH_ALEN] = { 0
>
>
>
> -
> /*********************************************************************/
> /* */
> /* Misc helper functions */
> @@ -280,17 +279,6 @@ done:
> /* */
> /*********************************************************************/
>
> -void lbs_scan_worker(struct work_struct *work)
> -{
> - struct lbs_private *priv =
> - container_of(work, struct lbs_private, scan_work.work);
> -
> - lbs_deb_enter(LBS_DEB_SCAN);
> - lbs_scan_networks(priv, NULL, 0);
> - lbs_deb_leave(LBS_DEB_SCAN);
> -}
> -
> -
> /**
> * @brief Create a channel list for the driver to scan based on region info
> *
> @@ -302,17 +290,11 @@ void lbs_scan_worker(struct work_struct
> *
> * @param priv A pointer to struct lbs_private structure
> * @param scanchanlist Output parameter: resulting channel list to scan
> - * @param filteredscan Flag indicating whether or not a BSSID or SSID filter
> - * is being sent in the command to firmware. Used to
> - * increase the number of channels sent in a scan
> - * command and to disable the firmware channel scan
> - * filter.
> *
> * @return void
> */
> static int lbs_scan_create_channel_list(struct lbs_private *priv,
> - struct chanscanparamset * scanchanlist,
> - u8 filteredscan)
> + struct chanscanparamset *scanchanlist)
> {
>
> struct region_channel *scanregion;
> @@ -382,11 +364,6 @@ static int lbs_scan_create_channel_list(
> }
>
> scanchanlist[chanidx].channumber = cfp->channel;
> -
> - if (filteredscan) {
> - scanchanlist[chanidx].chanscanmode.
> - disablechanfilt = 1;
> - }
> }
> }
> return chanidx;
> @@ -400,15 +377,14 @@ static int lbs_scan_create_channel_list(
> * length 06 00
> * ssid 4d 4e 54 45 53 54
> */
> -static int lbs_scan_add_ssid_tlv(u8 *tlv,
> - const struct lbs_ioctl_user_scan_cfg *user_cfg)
> +static int lbs_scan_add_ssid_tlv(struct lbs_private *priv, u8 *tlv)
> {
> struct mrvlietypes_ssidparamset *ssid_tlv =
> (struct mrvlietypes_ssidparamset *)tlv;
> ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
> - ssid_tlv->header.len = cpu_to_le16(user_cfg->ssid_len);
> - memcpy(ssid_tlv->ssid, user_cfg->ssid, user_cfg->ssid_len);
> - return sizeof(ssid_tlv->header) + user_cfg->ssid_len;
> + ssid_tlv->header.len = cpu_to_le16(priv->scan_ssid_len);
> + memcpy(ssid_tlv->ssid, priv->scan_ssid, priv->scan_ssid_len);
> + return sizeof(ssid_tlv->header) + priv->scan_ssid_len;
> }
>
>
> @@ -495,8 +471,7 @@ static int lbs_scan_add_rates_tlv(u8 *tl
> static int lbs_do_scan(struct lbs_private *priv,
> u8 bsstype,
> struct chanscanparamset *chan_list,
> - int chan_count,
> - const struct lbs_ioctl_user_scan_cfg *user_cfg)
> + int chan_count)
> {
> int ret = -ENOMEM;
> struct lbs_scan_cmd_config *scan_cmd;
> @@ -511,13 +486,13 @@ static int lbs_do_scan(struct lbs_privat
> if (scan_cmd == NULL)
> goto out;
> tlv = scan_cmd->tlvbuffer;
> - if (user_cfg)
> - memcpy(scan_cmd->bssid, user_cfg->bssid, ETH_ALEN);
> + /* TODO: do we need to scan for a specific BSSID?
> + memcpy(scan_cmd->bssid, priv->scan_bssid, ETH_ALEN); */
> scan_cmd->bsstype = bsstype;
>
> /* add TLVs */
> - if (user_cfg && user_cfg->ssid_len)
> - tlv += lbs_scan_add_ssid_tlv(tlv, user_cfg);
> + if (priv->scan_ssid_len)
> + tlv += lbs_scan_add_ssid_tlv(priv, tlv);
> if (chan_list && chan_count)
> tlv += lbs_scan_add_chanlist_tlv(tlv, chan_list, chan_count);
> tlv += lbs_scan_add_rates_tlv(tlv);
> @@ -547,14 +522,11 @@ out:
> * update the internal driver scan table
> *
> * @param priv A pointer to struct lbs_private structure
> - * @param puserscanin Pointer to the input configuration for the requested
> - * scan.
> + * @param full_scan should a full (blocking) scan be done?
> *
> * @return 0 or < 0 if error
> */
> -int lbs_scan_networks(struct lbs_private *priv,
> - const struct lbs_ioctl_user_scan_cfg *user_cfg,
> - int full_scan)
> +static int lbs_scan_networks(struct lbs_private *priv, int full_scan)
> {
> int ret = -ENOMEM;
> struct chanscanparamset *chan_list;
> @@ -562,7 +534,6 @@ int lbs_scan_networks(struct lbs_private
> int chan_count;
> u8 bsstype = CMD_BSS_TYPE_ANY;
> int numchannels = MRVDRV_CHANNELS_PER_SCAN_CMD;
> - int filteredscan = 0;
> union iwreq_data wrqu;
> #ifdef CONFIG_LIBERTAS_DEBUG
> struct bss_descriptor *iter;
> @@ -579,18 +550,19 @@ int lbs_scan_networks(struct lbs_private
> if (full_scan && delayed_work_pending(&priv->scan_work))
> cancel_delayed_work(&priv->scan_work);
>
> - /* Determine same scan parameters */
> + /* User-specified bsstype or channel list
> + TODO: this can be implemented if some user-space application
> + need the feature. Formerly, it was accessible from debugfs,
> + but then nowhere used.
> +
> if (user_cfg) {
> if (user_cfg->bsstype)
> bsstype = user_cfg->bsstype;
> - if (compare_ether_addr(user_cfg->bssid, &zeromac[0]) != 0) {
> - numchannels = MRVDRV_MAX_CHANNELS_PER_SCAN;
> - filteredscan = 1;
> - }
> }
> - lbs_deb_scan("numchannels %d, bsstype %d, "
> - "filteredscan %d\n",
> - numchannels, bsstype, filteredscan);
> + */
> +
> + lbs_deb_scan("numchannels %d, bsstype %d\n",
> + numchannels, bsstype);
>
> /* Create list of channels to scan */
> chan_list = kzalloc(sizeof(struct chanscanparamset) *
> @@ -601,8 +573,7 @@ int lbs_scan_networks(struct lbs_private
> }
>
> /* We want to scan all channels */
> - chan_count = lbs_scan_create_channel_list(priv, chan_list,
> - filteredscan);
> + chan_count = lbs_scan_create_channel_list(priv, chan_list);
>
> netif_stop_queue(priv->dev);
> netif_carrier_off(priv->dev);
> @@ -631,7 +602,7 @@ int lbs_scan_networks(struct lbs_private
> lbs_deb_scan("scanning %d of %d channels\n",
> to_scan, chan_count);
> ret = lbs_do_scan(priv, bsstype, curr_chans,
> - to_scan, user_cfg);
> + to_scan);
> if (ret) {
> lbs_pr_err("SCAN_CMD failed\n");
> goto out2;
> @@ -693,6 +664,17 @@ out:
>
>
>
> +void lbs_scan_worker(struct work_struct *work)
> +{
> + struct lbs_private *priv =
> + container_of(work, struct lbs_private, scan_work.work);
> +
> + lbs_deb_enter(LBS_DEB_SCAN);
> + lbs_scan_networks(priv, 0);
> + lbs_deb_leave(LBS_DEB_SCAN);
> +}
> +
> +
> /*********************************************************************/
> /* */
> /* Result interpretation */
> @@ -1115,7 +1097,7 @@ static struct bss_descriptor *lbs_find_b
> }
>
> /**
> - * @brief Find the AP with specific ssid in the scan list
> + * @brief Find the best AP
> *
> * Used from association worker.
> *
> @@ -1132,7 +1114,8 @@ int lbs_find_best_network_ssid(struct lb
>
> lbs_deb_enter(LBS_DEB_SCAN);
>
> - lbs_scan_networks(priv, NULL, 1);
> + priv->scan_ssid_len = 0;
> + lbs_scan_networks(priv, 1);
> if (priv->surpriseremoved)
> goto out;
>
> @@ -1164,23 +1147,20 @@ out:
> * @return 0-success, otherwise fail
> */
> int lbs_send_specific_ssid_scan(struct lbs_private *priv,
> - u8 *ssid, u8 ssid_len, u8 clear_ssid)
> + u8 *ssid, u8 ssid_len)
> {
> - struct lbs_ioctl_user_scan_cfg scancfg;
> int ret = 0;
>
> - lbs_deb_enter_args(LBS_DEB_SCAN, "SSID '%s', clear %d",
> - escape_essid(ssid, ssid_len), clear_ssid);
> + lbs_deb_enter_args(LBS_DEB_SCAN, "SSID '%s'",
> + escape_essid(ssid, ssid_len));
>
> if (!ssid_len)
> goto out;
>
> - memset(&scancfg, 0x00, sizeof(scancfg));
> - memcpy(scancfg.ssid, ssid, ssid_len);
> - scancfg.ssid_len = ssid_len;
> - scancfg.clear_ssid = clear_ssid;
> + memcpy(priv->scan_ssid, ssid, ssid_len);
> + priv->scan_ssid_len = ssid_len;
>
> - lbs_scan_networks(priv, &scancfg, 1);
> + lbs_scan_networks(priv, 1);
> if (priv->surpriseremoved) {
> ret = -1;
> goto out;
> @@ -1367,27 +1347,37 @@ out:
> * @return 0 --success, otherwise fail
> */
> int lbs_set_scan(struct net_device *dev, struct iw_request_info *info,
> - struct iw_param *wrqu, char *extra)
> + union iwreq_data *wrqu, char *extra)
> {
> struct lbs_private *priv = dev->priv;
> + int ret = 0;
>
> - lbs_deb_enter(LBS_DEB_SCAN);
> + lbs_deb_enter(LBS_DEB_WEXT);
>
> - if (!netif_running(dev))
> - return -ENETDOWN;
> + if (!netif_running(dev)) {
> + ret = -ENETDOWN;
> + goto out;
> + }
>
> /* mac80211 does this:
> struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
> - if (sdata->type != IEEE80211_IF_TYPE_xxx)
> - return -EOPNOTSUPP;
> + if (sdata->type != IEEE80211_IF_TYPE_xxx) {
> + ret = -EOPNOTSUPP;
> + goto out;
> + }
> + */
>
> if (wrqu->data.length == sizeof(struct iw_scan_req) &&
> wrqu->data.flags & IW_SCAN_THIS_ESSID) {
> - req = (struct iw_scan_req *)extra;
> - ssid = req->essid;
> - ssid_len = req->essid_len;
> + struct iw_scan_req *req = (struct iw_scan_req *)extra;
> + priv->scan_ssid_len = req->essid_len;
> + memcpy(priv->scan_ssid, req->essid, priv->scan_ssid_len);
> + lbs_deb_wext("set_scan, essid '%s'\n",
> + escape_essid(priv->scan_ssid, priv->scan_ssid_len));
> + } else {
> + priv->scan_ssid_len = 0;
> + lbs_deb_wext("set_scan\n");
> }
> - */
>
> if (!delayed_work_pending(&priv->scan_work))
> queue_delayed_work(priv->work_thread, &priv->scan_work,
> @@ -1396,10 +1386,11 @@ int lbs_set_scan(struct net_device *dev,
> priv->scan_channel = -1;
>
> if (priv->surpriseremoved)
> - return -EIO;
> + ret = -EIO;
>
> - lbs_deb_leave(LBS_DEB_SCAN);
> - return 0;
> +out:
> + lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret);
> + return ret;
> }
>
>
> @@ -1424,7 +1415,7 @@ int lbs_get_scan(struct net_device *dev,
> struct bss_descriptor * iter_bss;
> struct bss_descriptor * safe;
>
> - lbs_deb_enter(LBS_DEB_SCAN);
> + lbs_deb_enter(LBS_DEB_WEXT);
>
> /* iwlist should wait until the current scan is finished */
> if (priv->scan_channel)
> @@ -1470,7 +1461,7 @@ int lbs_get_scan(struct net_device *dev,
> dwrq->length = (ev - extra);
> dwrq->flags = 0;
>
> - lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", err);
> + lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", err);
> return err;
> }
>
> Index: wireless-testing/drivers/net/wireless/libertas/assoc.c
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/libertas/assoc.c 2008-02-26 15:11:27.000000000 +0100
> +++ wireless-testing/drivers/net/wireless/libertas/assoc.c 2008-02-26 15:11:29.000000000 +0100
> @@ -38,7 +38,7 @@ static int assoc_helper_essid(struct lbs
> escape_essid(assoc_req->ssid, assoc_req->ssid_len));
> if (assoc_req->mode == IW_MODE_INFRA) {
> lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
> - assoc_req->ssid_len, 0);
> + assoc_req->ssid_len);
>
> bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
> assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
> @@ -53,7 +53,7 @@ static int assoc_helper_essid(struct lbs
> * scan data will cause us to join a non-existant adhoc network
> */
> lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
> - assoc_req->ssid_len, 1);
> + assoc_req->ssid_len);
>
> /* Search for the requested SSID in the scan table */
> bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
> Index: wireless-testing/drivers/net/wireless/libertas/debugfs.c
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/libertas/debugfs.c 2008-02-26 15:11:27.000000000 +0100
> +++ wireless-testing/drivers/net/wireless/libertas/debugfs.c 2008-02-26 15:11:29.000000000 +0100
> @@ -164,173 +164,6 @@ out_unlock:
> return ret;
> }
>
> -static ssize_t lbs_extscan(struct file *file, const char __user *userbuf,
> - size_t count, loff_t *ppos)
> -{
> - struct lbs_private *priv = file->private_data;
> - ssize_t res, buf_size;
> - union iwreq_data wrqu;
> - unsigned long addr = get_zeroed_page(GFP_KERNEL);
> - char *buf = (char *)addr;
> -
> - buf_size = min(count, len - 1);
> - if (copy_from_user(buf, userbuf, buf_size)) {
> - res = -EFAULT;
> - goto out_unlock;
> - }
> -
> - lbs_send_specific_ssid_scan(priv, buf, strlen(buf)-1, 0);
> -
> - memset(&wrqu, 0, sizeof(union iwreq_data));
> - wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
> -
> -out_unlock:
> - free_page(addr);
> - return count;
> -}
> -
> -static void lbs_parse_bssid(char *buf, size_t count,
> - struct lbs_ioctl_user_scan_cfg *scan_cfg)
> -{
> - char *hold;
> - unsigned int mac[ETH_ALEN];
> -
> - hold = strstr(buf, "bssid=");
> - if (!hold)
> - return;
> - hold += 6;
> - sscanf(hold, "%02x:%02x:%02x:%02x:%02x:%02x",
> - mac, mac+1, mac+2, mac+3, mac+4, mac+5);
> - memcpy(scan_cfg->bssid, mac, ETH_ALEN);
> -}
> -
> -static void lbs_parse_ssid(char *buf, size_t count,
> - struct lbs_ioctl_user_scan_cfg *scan_cfg)
> -{
> - char *hold, *end;
> - ssize_t size;
> -
> - hold = strstr(buf, "ssid=");
> - if (!hold)
> - return;
> - hold += 5;
> - end = strchr(hold, ' ');
> - if (!end)
> - end = buf + count - 1;
> -
> - size = min((size_t)IW_ESSID_MAX_SIZE, (size_t) (end - hold));
> - strncpy(scan_cfg->ssid, hold, size);
> -
> - return;
> -}
> -
> -static int lbs_parse_clear(char *buf, size_t count, const char *tag)
> -{
> - char *hold;
> - int val;
> -
> - hold = strstr(buf, tag);
> - if (!hold)
> - return 0;
> - hold += strlen(tag);
> - sscanf(hold, "%d", &val);
> -
> - if (val != 0)
> - val = 1;
> -
> - return val;
> -}
> -
> -static int lbs_parse_dur(char *buf, size_t count,
> - struct lbs_ioctl_user_scan_cfg *scan_cfg)
> -{
> - char *hold;
> - int val;
> -
> - hold = strstr(buf, "dur=");
> - if (!hold)
> - return 0;
> - hold += 4;
> - sscanf(hold, "%d", &val);
> -
> - return val;
> -}
> -
> -static void lbs_parse_type(char *buf, size_t count,
> - struct lbs_ioctl_user_scan_cfg *scan_cfg)
> -{
> - char *hold;
> - int val;
> -
> - hold = strstr(buf, "type=");
> - if (!hold)
> - return;
> - hold += 5;
> - sscanf(hold, "%d", &val);
> -
> - /* type=1,2 or 3 */
> - if (val < 1 || val > 3)
> - return;
> -
> - scan_cfg->bsstype = val;
> -
> - return;
> -}
> -
> -static ssize_t lbs_setuserscan(struct file *file,
> - const char __user *userbuf,
> - size_t count, loff_t *ppos)
> -{
> - struct lbs_private *priv = file->private_data;
> - ssize_t res, buf_size;
> - struct lbs_ioctl_user_scan_cfg *scan_cfg;
> - union iwreq_data wrqu;
> - int dur;
> - char *buf = (char *)get_zeroed_page(GFP_KERNEL);
> -
> - if (!buf)
> - return -ENOMEM;
> -
> - buf_size = min(count, len - 1);
> - if (copy_from_user(buf, userbuf, buf_size)) {
> - res = -EFAULT;
> - goto out_buf;
> - }
> -
> - scan_cfg = kzalloc(sizeof(struct lbs_ioctl_user_scan_cfg), GFP_KERNEL);
> - if (!scan_cfg) {
> - res = -ENOMEM;
> - goto out_buf;
> - }
> - res = count;
> -
> - scan_cfg->bsstype = LBS_SCAN_BSS_TYPE_ANY;
> -
> - dur = lbs_parse_dur(buf, count, scan_cfg);
> - lbs_parse_bssid(buf, count, scan_cfg);
> - scan_cfg->clear_bssid = lbs_parse_clear(buf, count, "clear_bssid=");
> - lbs_parse_ssid(buf, count, scan_cfg);
> - scan_cfg->clear_ssid = lbs_parse_clear(buf, count, "clear_ssid=");
> - lbs_parse_type(buf, count, scan_cfg);
> -
> - lbs_scan_networks(priv, scan_cfg, 1);
> - wait_event_interruptible(priv->cmd_pending,
> - priv->surpriseremoved || !priv->scan_channel);
> -
> - if (priv->surpriseremoved)
> - goto out_scan_cfg;
> -
> - memset(&wrqu, 0x00, sizeof(union iwreq_data));
> - wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
> -
> - out_scan_cfg:
> - kfree(scan_cfg);
> - out_buf:
> - free_page((unsigned long)buf);
> - return res;
> -}
> -
> -
> /*
> * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
> * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
> @@ -857,8 +690,6 @@ static struct lbs_debugfs_files debugfs_
> write_file_dummy), },
> { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
> lbs_sleepparams_write), },
> - { "extscan", 0600, FOPS(NULL, lbs_extscan), },
> - { "setuserscan", 0600, FOPS(NULL, lbs_setuserscan), },
> };
>
> static struct lbs_debugfs_files debugfs_events_files[] = {
> Index: wireless-testing/drivers/net/wireless/libertas/wext.c
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/libertas/wext.c 2008-02-26 15:11:27.000000000 +0100
> +++ wireless-testing/drivers/net/wireless/libertas/wext.c 2008-02-26 15:13:00.000000000 +0100
> @@ -579,6 +579,9 @@ static int lbs_get_range(struct net_devi
> range->num_bitrates);
>
> range->num_frequency = 0;
> +
> + range->scan_capa = IW_SCAN_CAPA_ESSID;
> +
> if (priv->enable11d &&
> (priv->connect_status == LBS_CONNECTED ||
> priv->mesh_connect_status == LBS_CONNECTED)) {
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