Add ieee80211_get_channel() which gets you a channel struct for a
specific wiphy if that channel is present in that wiphy.
Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
---
include/net/wireless.h | 6 ++++++
net/wireless/util.c | 23 +++++++++++++++++++++++
2 files changed, 29 insertions(+)
--- everything.orig/include/net/wireless.h 2008-03-16 18:17:35.000000000 +0100
+++ everything/include/net/wireless.h 2008-03-16 18:18:48.000000000 +0100
@@ -304,4 +304,10 @@ extern int ieee80211_channel_to_frequenc
*/
extern int ieee80211_frequency_to_channel(int freq);
+/**
+ * ieee80211_get_channel - get channel struct from wiphy for specified frequency
+ */
+extern struct ieee80211_channel *ieee80211_get_channel(struct wiphy *wiphy,
+ int freq);
+
#endif /* __NET_WIRELESS_H */
--- everything.orig/net/wireless/util.c 2008-03-16 18:18:52.000000000 +0100
+++ everything/net/wireless/util.c 2008-03-16 18:23:02.000000000 +0100
@@ -33,6 +33,29 @@ int ieee80211_frequency_to_channel(int f
}
EXPORT_SYMBOL(ieee80211_frequency_to_channel);
+struct ieee80211_channel *ieee80211_get_channel(struct wiphy *wiphy,
+ int freq)
+{
+ enum ieee80211_band band;
+ struct ieee80211_supported_band *sband;
+ int i;
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ sband = wiphy->bands[band];
+
+ if (!sband)
+ continue;
+
+ for (i = 0; i < sband->n_channels; i++) {
+ if (sband->channels[i].center_freq == freq)
+ return &sband->channels[i];
+ }
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(ieee80211_get_channel);
+
static void set_mandatory_flags_band(struct ieee80211_supported_band *sband,
enum ieee80211_band band)
{
--
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