Convert scan function to cfg80211. Unlike old scan code new code
waits 1 sec before getting scan data from device and passing
forward to cfg80211.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@xxxxxxxx>
---
drivers/net/wireless/rndis_wlan.c | 341 ++++++++++++++++---------------------
1 files changed, 147 insertions(+), 194 deletions(-)
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 3674c67..6d4a1ef 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -356,8 +356,11 @@ struct rndis_wext_private {
struct wireless_dev wdev;
+ struct cfg80211_scan_request *scan_request;
+
struct workqueue_struct *workqueue;
struct delayed_work stats_work;
+ struct delayed_work scan_work;
struct work_struct work;
struct mutex command_lock;
spinlock_t stats_lock;
@@ -413,8 +416,12 @@ static int rndis_change_virtual_intf(struct wiphy *wiphy, int ifindex,
enum nl80211_iftype type, u32 *flags,
struct vif_params *params);
+static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
+ struct cfg80211_scan_request *request);
+
struct cfg80211_ops rndis_config_ops = {
.change_virtual_intf = rndis_change_virtual_intf,
+ .scan = rndis_scan,
};
void *rndis_wiphy_privid = &rndis_wiphy_privid;
@@ -1164,6 +1171,142 @@ static int rndis_change_virtual_intf(struct wiphy *wiphy, int ifindex,
return set_infra_mode(usbdev, mode);
}
+
+#define SCAN_DELAY_JIFFIES (HZ)
+static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
+ struct cfg80211_scan_request *request)
+{
+ struct usbnet *usbdev = netdev_priv(dev);
+ struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev);
+ int ret;
+ __le32 tmp;
+
+ devdbg(usbdev, "cfg80211.scan");
+
+ if (!request)
+ return -EINVAL;
+
+ if (priv->scan_request && priv->scan_request != request)
+ return -EBUSY;
+
+ priv->scan_request = request;
+
+ tmp = ccpu2(1);
+ ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
+ sizeof(tmp));
+ if (ret == 0) {
+ /* Wait before retrieving scan results from device */
+ queue_delayed_work(priv->workqueue, &priv->scan_work,
+ SCAN_DELAY_JIFFIES);
+ }
+
+ return ret;
+}
+
+
+static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
+ struct ndis_80211_bssid_ex *bssid)
+{
+ struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev);
+ struct ieee80211_channel *channel;
+ s32 signal;
+ u64 timestamp;
+ u16 capability;
+ u16 beacon_interval;
+ struct ndis_80211_fixed_ies *fixed;
+ int ie_len, bssid_len;
+ u8 *ie;
+
+ /* parse bssid structure */
+ bssid_len = le32_to_cpu(bssid->length);
+
+ if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
+ sizeof(struct ndis_80211_fixed_ies))
+ return NULL;
+
+ fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
+
+ ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
+ ie_len = min(bssid_len - (int)sizeof(*bssid),
+ (int)le32_to_cpu(bssid->ie_length));
+ ie_len -= sizeof(struct ndis_80211_fixed_ies);
+ if (ie_len < 0)
+ return NULL;
+
+ /* extract data for cfg80211_inform_bss */
+ channel = ieee80211_get_channel(priv->wdev.wiphy,
+ KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
+ if (!channel)
+ return NULL;
+
+ signal = level_to_qual(le32_to_cpu(bssid->rssi));
+ timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
+ capability = le16_to_cpu(fixed->capabilities);
+ beacon_interval = le16_to_cpu(fixed->beacon_interval);
+
+ return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
+ timestamp, capability, beacon_interval, ie, ie_len, signal,
+ GFP_KERNEL);
+}
+
+
+static int rndis_check_bssid_list(struct usbnet *usbdev)
+{
+ void *buf = NULL;
+ struct ndis_80211_bssid_list_ex *bssid_list;
+ struct ndis_80211_bssid_ex *bssid;
+ int ret = -EINVAL, len, count, bssid_len;
+
+ devdbg(usbdev, "check_bssid_list");
+
+ len = CONTROL_BUFFER_SIZE;
+ buf = kmalloc(len, GFP_KERNEL);
+ if (!buf) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
+ if (ret != 0)
+ goto out;
+
+ bssid_list = buf;
+ bssid = bssid_list->bssid;
+ bssid_len = le32_to_cpu(bssid->length);
+ count = le32_to_cpu(bssid_list->num_items);
+ devdbg(usbdev, "check_bssid_list: %d BSSIDs found", count);
+
+ while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
+ rndis_bss_info_update(usbdev, bssid);
+
+ bssid = (void *)bssid + bssid_len;
+ bssid_len = le32_to_cpu(bssid->length);
+ count--;
+ }
+
+out:
+ kfree(buf);
+ return ret;
+}
+
+
+static void rndis_get_scan_results(struct work_struct *work)
+{
+ struct rndis_wext_private *priv =
+ container_of(work, struct rndis_wext_private, scan_work.work);
+ struct usbnet *usbdev = priv->usbdev;
+ int ret;
+
+ devdbg(usbdev, "get_scan_results");
+
+ ret = rndis_check_bssid_list(usbdev);
+
+ cfg80211_scan_done(priv->scan_request, ret < 0);
+
+ priv->scan_request = NULL;
+}
+
+
/*
* wireless extension handlers
*/
@@ -1531,198 +1674,6 @@ static int rndis_iw_set_encode_ext(struct net_device *dev,
}
-static int rndis_iw_set_scan(struct net_device *dev,
- struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
-{
- struct usbnet *usbdev = netdev_priv(dev);
- union iwreq_data evt;
- int ret = -EINVAL;
- __le32 tmp;
-
- devdbg(usbdev, "SIOCSIWSCAN");
-
- if (wrqu->data.flags == 0) {
- tmp = ccpu2(1);
- ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
- sizeof(tmp));
- evt.data.flags = 0;
- evt.data.length = 0;
- wireless_send_event(dev, SIOCGIWSCAN, &evt, NULL);
- }
- return ret;
-}
-
-
-static char *rndis_translate_scan(struct net_device *dev,
- struct iw_request_info *info, char *cev,
- char *end_buf,
- struct ndis_80211_bssid_ex *bssid)
-{
- struct usbnet *usbdev = netdev_priv(dev);
- u8 *ie;
- char *current_val;
- int bssid_len, ie_len, i;
- u32 beacon, atim;
- struct iw_event iwe;
- unsigned char sbuf[32];
-
- bssid_len = le32_to_cpu(bssid->length);
-
- devdbg(usbdev, "BSSID %pM", bssid->mac);
- iwe.cmd = SIOCGIWAP;
- iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
- memcpy(iwe.u.ap_addr.sa_data, bssid->mac, ETH_ALEN);
- cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_ADDR_LEN);
-
- devdbg(usbdev, "SSID(%d) %s", le32_to_cpu(bssid->ssid.length),
- bssid->ssid.essid);
- iwe.cmd = SIOCGIWESSID;
- iwe.u.essid.length = le32_to_cpu(bssid->ssid.length);
- iwe.u.essid.flags = 1;
- cev = iwe_stream_add_point(info, cev, end_buf, &iwe, bssid->ssid.essid);
-
- devdbg(usbdev, "MODE %d", le32_to_cpu(bssid->net_infra));
- iwe.cmd = SIOCGIWMODE;
- switch (le32_to_cpu(bssid->net_infra)) {
- case ndis_80211_infra_adhoc:
- iwe.u.mode = IW_MODE_ADHOC;
- break;
- case ndis_80211_infra_infra:
- iwe.u.mode = IW_MODE_INFRA;
- break;
- /*case ndis_80211_infra_auto_unknown:*/
- default:
- iwe.u.mode = IW_MODE_AUTO;
- break;
- }
- cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_UINT_LEN);
-
- devdbg(usbdev, "FREQ %d kHz", le32_to_cpu(bssid->config.ds_config));
- iwe.cmd = SIOCGIWFREQ;
- dsconfig_to_freq(le32_to_cpu(bssid->config.ds_config), &iwe.u.freq);
- cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_FREQ_LEN);
-
- devdbg(usbdev, "QUAL %d", le32_to_cpu(bssid->rssi));
- iwe.cmd = IWEVQUAL;
- iwe.u.qual.qual = level_to_qual(le32_to_cpu(bssid->rssi));
- iwe.u.qual.level = level_to_qual(le32_to_cpu(bssid->rssi));
- iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED
- | IW_QUAL_LEVEL_UPDATED
- | IW_QUAL_NOISE_INVALID;
- cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_QUAL_LEN);
-
- devdbg(usbdev, "ENCODE %d", le32_to_cpu(bssid->privacy));
- iwe.cmd = SIOCGIWENCODE;
- iwe.u.data.length = 0;
- if (le32_to_cpu(bssid->privacy) == ndis_80211_priv_accept_all)
- iwe.u.data.flags = IW_ENCODE_DISABLED;
- else
- iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
-
- cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
-
- devdbg(usbdev, "RATES:");
- current_val = cev + iwe_stream_lcp_len(info);
- iwe.cmd = SIOCGIWRATE;
- for (i = 0; i < sizeof(bssid->rates); i++) {
- if (bssid->rates[i] & 0x7f) {
- iwe.u.bitrate.value =
- ((bssid->rates[i] & 0x7f) *
- 500000);
- devdbg(usbdev, " %d", iwe.u.bitrate.value);
- current_val = iwe_stream_add_value(info, cev,
- current_val, end_buf, &iwe,
- IW_EV_PARAM_LEN);
- }
- }
-
- if ((current_val - cev) > iwe_stream_lcp_len(info))
- cev = current_val;
-
- beacon = le32_to_cpu(bssid->config.beacon_period);
- devdbg(usbdev, "BCN_INT %d", beacon);
- iwe.cmd = IWEVCUSTOM;
- snprintf(sbuf, sizeof(sbuf), "bcn_int=%d", beacon);
- iwe.u.data.length = strlen(sbuf);
- cev = iwe_stream_add_point(info, cev, end_buf, &iwe, sbuf);
-
- atim = le32_to_cpu(bssid->config.atim_window);
- devdbg(usbdev, "ATIM %d", atim);
- iwe.cmd = IWEVCUSTOM;
- snprintf(sbuf, sizeof(sbuf), "atim=%u", atim);
- iwe.u.data.length = strlen(sbuf);
- cev = iwe_stream_add_point(info, cev, end_buf, &iwe, sbuf);
-
- ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
- ie_len = min(bssid_len - (int)sizeof(*bssid),
- (int)le32_to_cpu(bssid->ie_length));
- ie_len -= sizeof(struct ndis_80211_fixed_ies);
- while (ie_len >= 2 && 2 + ie[1] <= ie_len) {
- if ((ie[0] == WLAN_EID_GENERIC && ie[1] >= 4 &&
- memcmp(ie + 2, "\x00\x50\xf2\x01", 4) == 0) ||
- ie[0] == WLAN_EID_RSN) {
- devdbg(usbdev, "IE: WPA%d",
- (ie[0] == WLAN_EID_RSN) ? 2 : 1);
- iwe.cmd = IWEVGENIE;
- /* arbitrary cut-off at 64 */
- iwe.u.data.length = min(ie[1] + 2, 64);
- cev = iwe_stream_add_point(info, cev, end_buf, &iwe, ie);
- }
-
- ie_len -= 2 + ie[1];
- ie += 2 + ie[1];
- }
-
- return cev;
-}
-
-
-static int rndis_iw_get_scan(struct net_device *dev,
- struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
-{
- struct usbnet *usbdev = netdev_priv(dev);
- void *buf = NULL;
- char *cev = extra;
- struct ndis_80211_bssid_list_ex *bssid_list;
- struct ndis_80211_bssid_ex *bssid;
- int ret = -EINVAL, len, count, bssid_len;
-
- devdbg(usbdev, "SIOCGIWSCAN");
-
- len = CONTROL_BUFFER_SIZE;
- buf = kmalloc(len, GFP_KERNEL);
- if (!buf) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
-
- if (ret != 0)
- goto out;
-
- bssid_list = buf;
- bssid = bssid_list->bssid;
- bssid_len = le32_to_cpu(bssid->length);
- count = le32_to_cpu(bssid_list->num_items);
- devdbg(usbdev, "SIOCGIWSCAN: %d BSSIDs found", count);
-
- while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
- cev = rndis_translate_scan(dev, info, cev,
- extra + IW_SCAN_MAX_DATA, bssid);
- bssid = (void *)bssid + bssid_len;
- bssid_len = le32_to_cpu(bssid->length);
- count--;
- }
-
-out:
- wrqu->data.length = cev - extra;
- wrqu->data.flags = 0;
- kfree(buf);
- return ret;
-}
-
-
static int rndis_iw_set_genie(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
@@ -2085,8 +2036,8 @@ static const iw_handler rndis_iw_handler[] =
IW_IOCTL(SIOCGIWRANGE) = (iw_handler) cfg80211_wext_giwrange,
IW_IOCTL(SIOCSIWAP) = rndis_iw_set_bssid,
IW_IOCTL(SIOCGIWAP) = rndis_iw_get_bssid,
- IW_IOCTL(SIOCSIWSCAN) = rndis_iw_set_scan,
- IW_IOCTL(SIOCGIWSCAN) = rndis_iw_get_scan,
+ IW_IOCTL(SIOCSIWSCAN) = (iw_handler) cfg80211_wext_siwscan,
+ IW_IOCTL(SIOCGIWSCAN) = (iw_handler) cfg80211_wext_giwscan,
IW_IOCTL(SIOCSIWESSID) = rndis_iw_set_essid,
IW_IOCTL(SIOCGIWESSID) = rndis_iw_get_essid,
IW_IOCTL(SIOCSIWNICKN) = rndis_iw_set_nick,
@@ -2535,6 +2486,7 @@ static int rndis_wext_bind(struct usbnet *usbdev, struct usb_interface *intf)
INIT_DELAYED_WORK(&priv->stats_work, rndis_update_wireless_stats);
queue_delayed_work(priv->workqueue, &priv->stats_work,
round_jiffies_relative(STATS_UPDATE_JIFFIES));
+ INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
INIT_WORK(&priv->work, rndis_wext_worker);
return 0;
@@ -2553,6 +2505,7 @@ static void rndis_wext_unbind(struct usbnet *usbdev, struct usb_interface *intf)
disassociate(usbdev, 0);
cancel_delayed_work_sync(&priv->stats_work);
+ cancel_delayed_work_sync(&priv->scan_work);
cancel_work_sync(&priv->work);
flush_workqueue(priv->workqueue);
destroy_workqueue(priv->workqueue);
--
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