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authorDavid S. Miller <davem@davemloft.net>2009-09-09 17:33:45 -0700
committerDavid S. Miller <davem@davemloft.net>2009-09-09 17:33:45 -0700
commitea6a634ef7f0ab1d1f48ba0ad4f50e96d6065312 (patch)
treefbf291540b824183e0d9292906e9570fd344ebaa /net
parentfa1a9c681377c57e233038e50479e7d7a5cc3108 (diff)
parentb2e3abdc708f8c0eff194af25362fdb239abe241 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
Diffstat (limited to 'net')
-rw-r--r--net/wireless/Kconfig11
-rw-r--r--net/wireless/scan.c41
2 files changed, 44 insertions, 8 deletions
diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index 68c504fab12..abf7ca3f9ff 100644
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -1,6 +1,15 @@
config CFG80211
- tristate "Improved wireless configuration API"
+ tristate "cfg80211 - wireless configuration API"
depends on RFKILL || !RFKILL
+ ---help---
+ cfg80211 is the Linux wireless LAN (802.11) configuration API.
+ Enable this if you have a wireless device.
+
+ For more information refer to documentation on the wireless wiki:
+
+ http://wireless.kernel.org/en/developers/Documentation/cfg80211
+
+ When built as a module it will be called cfg80211.
config NL80211_TESTMODE
bool "nl80211 testmode command"
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 19c5a9a8d08..4c210c2debc 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -607,6 +607,9 @@ int cfg80211_wext_siwscan(struct net_device *dev,
if (!netif_running(dev))
return -ENETDOWN;
+ if (wrqu->data.length == sizeof(struct iw_scan_req))
+ wreq = (struct iw_scan_req *)extra;
+
rdev = cfg80211_get_dev_from_ifindex(dev_net(dev), dev->ifindex);
if (IS_ERR(rdev))
@@ -619,9 +622,14 @@ int cfg80211_wext_siwscan(struct net_device *dev,
wiphy = &rdev->wiphy;
- for (band = 0; band < IEEE80211_NUM_BANDS; band++)
- if (wiphy->bands[band])
- n_channels += wiphy->bands[band]->n_channels;
+ /* Determine number of channels, needed to allocate creq */
+ if (wreq && wreq->num_channels)
+ n_channels = wreq->num_channels;
+ else {
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+ if (wiphy->bands[band])
+ n_channels += wiphy->bands[band]->n_channels;
+ }
creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
n_channels * sizeof(void *),
@@ -638,22 +646,41 @@ int cfg80211_wext_siwscan(struct net_device *dev,
creq->n_channels = n_channels;
creq->n_ssids = 1;
- /* all channels */
+ /* translate "Scan on frequencies" request */
i = 0;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
int j;
if (!wiphy->bands[band])
continue;
for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
+
+ /* If we have a wireless request structure and the
+ * wireless request specifies frequencies, then search
+ * for the matching hardware channel.
+ */
+ if (wreq && wreq->num_channels) {
+ int k;
+ int wiphy_freq = wiphy->bands[band]->channels[j].center_freq;
+ for (k = 0; k < wreq->num_channels; k++) {
+ int wext_freq = wreq->channel_list[k].m / 100000;
+ if (wext_freq == wiphy_freq)
+ goto wext_freq_found;
+ }
+ goto wext_freq_not_found;
+ }
+
+ wext_freq_found:
creq->channels[i] = &wiphy->bands[band]->channels[j];
i++;
+ wext_freq_not_found: ;
}
}
- /* translate scan request */
- if (wrqu->data.length == sizeof(struct iw_scan_req)) {
- wreq = (struct iw_scan_req *)extra;
+ /* Set real number of channels specified in creq->channels[] */
+ creq->n_channels = i;
+ /* translate "Scan for SSID" request */
+ if (wreq) {
if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
if (wreq->essid_len > IEEE80211_MAX_SSID_LEN)
return -EINVAL;