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mac80211: make beacon filtering per virtual interface

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Due to firmware limitations, we may not be able to
support beacon filtering on all virtual interfaces.
To allow this in mac80211, introduce per-interface
driver capability flags that the driver sets when
an interface is added.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2012-01-19 09:29:57 +01:00
committed by John W. Linville
parent 47d505ccc7
commit c1288b1278
8 changed files with 29 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
include/net/mac80211.h
View File

@@ -851,6 +851,16 @@ struct ieee80211_channel_switch {
u8 count;
};
/**
* enum ieee80211_vif_flags - virtual interface flags
*
* @IEEE80211_VIF_BEACON_FILTER: the device performs beacon filtering
* on this virtual interface to avoid unnecessary CPU wakeups
*/
enum ieee80211_vif_flags {
IEEE80211_VIF_BEACON_FILTER = BIT(0),
};
/**
* struct ieee80211_vif - per-interface data
*
@@ -863,6 +873,10 @@ struct ieee80211_channel_switch {
* @addr: address of this interface
* @p2p: indicates whether this AP or STA interface is a p2p
* interface, i.e. a GO or p2p-sta respectively
* @driver_flags: flags/capabilities the driver has for this interface,
* these need to be set (or cleared) when the interface is added
* or, if supported by the driver, the interface type is changed
* at runtime, mac80211 will never touch this field
* @drv_priv: data area for driver use, will always be aligned to
* sizeof(void *).
*/
@@ -871,6 +885,7 @@ struct ieee80211_vif {
struct ieee80211_bss_conf bss_conf;
u8 addr[ETH_ALEN];
bool p2p;
u32 driver_flags;
/* must be last */
u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
};
@@ -1079,10 +1094,6 @@ enum sta_notify_cmd {
* @IEEE80211_HW_MFP_CAPABLE:
* Hardware supports management frame protection (MFP, IEEE 802.11w).
*
* @IEEE80211_HW_BEACON_FILTER:
* Hardware supports dropping of irrelevant beacon frames to
* avoid waking up cpu.
*
* @IEEE80211_HW_SUPPORTS_STATIC_SMPS:
* Hardware supports static spatial multiplexing powersave,
* ie. can turn off all but one chain even on HT connections
@@ -1150,7 +1161,7 @@ enum ieee80211_hw_flags {
IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11,
IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12,
IEEE80211_HW_MFP_CAPABLE = 1<<13,
IEEE80211_HW_BEACON_FILTER = 1<<14,
/* reuse bit 14 */
IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15,
IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16,
IEEE80211_HW_SUPPORTS_UAPSD = 1<<17,
@@ -1446,8 +1457,8 @@ void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb);
* way the host will only receive beacons where some relevant information
* (for example ERP protection or WMM settings) have changed.
*
* Beacon filter support is advertised with the %IEEE80211_HW_BEACON_FILTER
* hardware capability. The driver needs to enable beacon filter support
* Beacon filter support is advertised with the %IEEE80211_VIF_BEACON_FILTER
* interface capability. The driver needs to enable beacon filter support
* whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When
* power save is enabled, the stack will not check for beacon loss and the
* driver needs to notify about loss of beacons with ieee80211_beacon_loss().
@@ -3316,7 +3327,7 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
*
* @vif: &struct ieee80211_vif pointer from the add_interface callback.
*
* When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTER and
* When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER and
* %IEEE80211_CONF_PS is set, the driver needs to inform whenever the
* hardware is not receiving beacons with this function.
*/
@@ -3327,7 +3338,7 @@ void ieee80211_beacon_loss(struct ieee80211_vif *vif);
*
* @vif: &struct ieee80211_vif pointer from the add_interface callback.
*
* When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTER, and
* When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER, and
* %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver
* needs to inform if the connection to the AP has been lost.
*