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cfg80211/mac80211: re-add get_channel operation

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This essentially reverts commit 2e165b8184 but
introduces the get_channel operation with a new
wireless_dev argument so that you can retrieve
the channel per interface. This is necessary as
even though we can track all interface channels
(except monitor) we can't track the channel type
used.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2012-07-12 19:45:08 +02:00
parent 075e08477d
commit 5b7ccaf3fc
4 changed files with 38 additions and 7 deletions
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16
net/wireless/nl80211.c
View File

@@ -1759,11 +1759,17 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
(cfg80211_rdev_list_generation << 2)))
goto nla_put_failure;
if (rdev->monitor_channel) {
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
rdev->monitor_channel->center_freq) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
rdev->monitor_channel_type))
if (rdev->ops->get_channel) {
struct ieee80211_channel *chan;
enum nl80211_channel_type channel_type;
chan = rdev->ops->get_channel(&rdev->wiphy, wdev,
&channel_type);
if (chan &&
(nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
chan->center_freq) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
channel_type)))
goto nla_put_failure;
}

9
net/wireless/wext-compat.c
View File

@@ -827,6 +827,8 @@ static int cfg80211_wext_giwfreq(struct net_device *dev,
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
struct ieee80211_channel *chan;
enum nl80211_channel_type channel_type;
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
@@ -834,10 +836,13 @@ static int cfg80211_wext_giwfreq(struct net_device *dev,
case NL80211_IFTYPE_ADHOC:
return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
case NL80211_IFTYPE_MONITOR:
if (!rdev->monitor_channel)
if (!rdev->ops->get_channel)
return -EINVAL;
freq->m = rdev->monitor_channel->center_freq;
chan = rdev->ops->get_channel(wdev->wiphy, wdev, &channel_type);
if (!chan)
return -EINVAL;
freq->m = chan->center_freq;
freq->e = 6;
return 0;
default: