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mac80211: support scan features for improved scan privacy

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Support the new random SN and minimal probe request contents
scan flags for the case of software scan - for hardware scan
the drivers need to opt in, but may need to do only that,
depending on their implementation.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
This commit is contained in:
Johannes Berg
2018-05-28 15:47:41 +02:00
committed by Johannes Berg
parent 2e076f1990
commit b9771d41ae
9 changed files with 71 additions and 24 deletions
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14
net/mac80211/ieee80211_i.h
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@@ -165,6 +165,7 @@ typedef unsigned __bitwise ieee80211_tx_result;
#define TX_DROP ((__force ieee80211_tx_result) 1u)
#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
#define IEEE80211_TX_NO_SEQNO BIT(0)
#define IEEE80211_TX_UNICAST BIT(1)
#define IEEE80211_TX_PS_BUFFERED BIT(2)
@@ -1880,19 +1881,20 @@ void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
bool bss_notify, bool enable_qos);
void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, struct sk_buff *skb);
struct sta_info *sta, struct sk_buff *skb,
u32 txdata_flags);
void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid,
enum nl80211_band band);
enum nl80211_band band, u32 txdata_flags);
static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid,
enum nl80211_band band)
enum nl80211_band band, u32 txdata_flags)
{
rcu_read_lock();
__ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
__ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags);
rcu_read_unlock();
}
@@ -1910,7 +1912,7 @@ static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
}
__ieee80211_tx_skb_tid_band(sdata, skb, tid,
chanctx_conf->def.chan->band);
chanctx_conf->def.chan->band, 0);
rcu_read_unlock();
}
@@ -2034,6 +2036,8 @@ void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
enum {
IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
};
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,