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cfg80211: Remove unused cfg80211_can_use_iftype_chan()

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Last caller of this function was removed in 3.17 in commit
97dc94f1d9.

Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Michal Sojka 2015-11-23 19:27:15 +01:00 committed by Johannes Berg
parent 491728746b
commit c781944b71
2 changed files with 0 additions and 121 deletions
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7
net/wireless/core.h
View File

@ -416,13 +416,6 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
void cfg80211_process_wdev_events(struct wireless_dev *wdev);
int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
enum nl80211_iftype iftype,
struct ieee80211_channel *chan,
enum cfg80211_chan_mode chanmode,
u8 radar_detect);
/**
* cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
* @wiphy: the wiphy to validate against

114
net/wireless/util.c
View File

@ -1613,120 +1613,6 @@ int cfg80211_check_combinations(struct wiphy *wiphy,
}
EXPORT_SYMBOL(cfg80211_check_combinations);
int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
enum nl80211_iftype iftype,
struct ieee80211_channel *chan,
enum cfg80211_chan_mode chanmode,
u8 radar_detect)
{
struct wireless_dev *wdev_iter;
int num[NUM_NL80211_IFTYPES];
struct ieee80211_channel
*used_channels[CFG80211_MAX_NUM_DIFFERENT_CHANNELS];
struct ieee80211_channel *ch;
enum cfg80211_chan_mode chmode;
int num_different_channels = 0;
int total = 1;
int i;
ASSERT_RTNL();
if (WARN_ON(hweight32(radar_detect) > 1))
return -EINVAL;
if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
return -EINVAL;
/* Always allow software iftypes */
if (rdev->wiphy.software_iftypes & BIT(iftype)) {
if (radar_detect)
return -EINVAL;
return 0;
}
memset(num, 0, sizeof(num));
memset(used_channels, 0, sizeof(used_channels));
num[iftype] = 1;
/* TODO: We'll probably not need this anymore, since this
* should only be called with CHAN_MODE_UNDEFINED. There are
* still a couple of pending calls where other chanmodes are
* used, but we should get rid of them.
*/
switch (chanmode) {
case CHAN_MODE_UNDEFINED:
break;
case CHAN_MODE_SHARED:
WARN_ON(!chan);
used_channels[0] = chan;
num_different_channels++;
break;
case CHAN_MODE_EXCLUSIVE:
num_different_channels++;
break;
}
list_for_each_entry(wdev_iter, &rdev->wdev_list, list) {
if (wdev_iter == wdev)
continue;
if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) {
if (!wdev_iter->p2p_started)
continue;
} else if (wdev_iter->netdev) {
if (!netif_running(wdev_iter->netdev))
continue;
} else {
WARN_ON(1);
}
if (rdev->wiphy.software_iftypes & BIT(wdev_iter->iftype))
continue;
/*
* We may be holding the "wdev" mutex, but now need to lock
* wdev_iter. This is OK because once we get here wdev_iter
* is not wdev (tested above), but we need to use the nested
* locking for lockdep.
*/
mutex_lock_nested(&wdev_iter->mtx, 1);
__acquire(wdev_iter->mtx);
cfg80211_get_chan_state(wdev_iter, &ch, &chmode, &radar_detect);
wdev_unlock(wdev_iter);
switch (chmode) {
case CHAN_MODE_UNDEFINED:
break;
case CHAN_MODE_SHARED:
for (i = 0; i < CFG80211_MAX_NUM_DIFFERENT_CHANNELS; i++)
if (!used_channels[i] || used_channels[i] == ch)
break;
if (i == CFG80211_MAX_NUM_DIFFERENT_CHANNELS)
return -EBUSY;
if (used_channels[i] == NULL) {
used_channels[i] = ch;
num_different_channels++;
}
break;
case CHAN_MODE_EXCLUSIVE:
num_different_channels++;
break;
}
num[wdev_iter->iftype]++;
total++;
}
if (total == 1 && !radar_detect)
return 0;
return cfg80211_check_combinations(&rdev->wiphy, num_different_channels,
radar_detect, num);
}
int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
const u8 *rates, unsigned int n_rates,
u32 *mask)