mac80211: add beacon configuration via cfg80211
This patch implements the cfg80211 hooks for configuring beaconing
on an access point interface in mac80211. While doing so, it fixes
a number of races that could badly crash the machine when the
beacon is changed while being requested by the driver.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 91edaad..08a6c0c 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -190,9 +190,14 @@
typedef ieee80211_txrx_result (*ieee80211_rx_handler)
(struct ieee80211_txrx_data *rx);
+struct beacon_data {
+ u8 *head, *tail;
+ int head_len, tail_len;
+ int dtim_period;
+};
+
struct ieee80211_if_ap {
- u8 *beacon_head, *beacon_tail;
- int beacon_head_len, beacon_tail_len;
+ struct beacon_data *beacon;
struct list_head vlans;
@@ -205,7 +210,7 @@
u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
atomic_t num_sta_ps; /* number of stations in PS mode */
struct sk_buff_head ps_bc_buf;
- int dtim_period, dtim_count;
+ int dtim_count;
int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
int max_ratectrl_rateidx; /* max TX rateidx for rate control */
int num_beacons; /* number of TXed beacon frames for this BSS */
@@ -360,14 +365,11 @@
struct dentry *drop_unencrypted;
struct dentry *ieee802_1x_pac;
struct dentry *num_sta_ps;
- struct dentry *dtim_period;
struct dentry *dtim_count;
struct dentry *num_beacons;
struct dentry *force_unicast_rateidx;
struct dentry *max_ratectrl_rateidx;
struct dentry *num_buffered_multicast;
- struct dentry *beacon_head_len;
- struct dentry *beacon_tail_len;
} ap;
struct {
struct dentry *channel_use;