diff options
Diffstat (limited to 'net/mac80211/util.c')
| -rw-r--r-- | net/mac80211/util.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 550a6880625d..b763e4ccaf5e 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2353,3 +2353,28 @@ u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) return ret; } + +/* + * Returns true if smps_mode_new is strictly more restrictive than + * smps_mode_old. + */ +bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, + enum ieee80211_smps_mode smps_mode_new) +{ + if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || + smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) + return false; + + switch (smps_mode_old) { + case IEEE80211_SMPS_STATIC: + return false; + case IEEE80211_SMPS_DYNAMIC: + return smps_mode_new == IEEE80211_SMPS_STATIC; + case IEEE80211_SMPS_OFF: + return smps_mode_new != IEEE80211_SMPS_OFF; + default: + WARN_ON(1); + } + + return false; +} |