lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mac80211: add U-APSD client support

Browse Source 
Add Unscheduled Automatic Power-Save Delivery (U-APSD) client support. The
idea is that the data frames from the client trigger AP to send the buffered
frames with ACs which have U-APSD enabled. This decreases latency and makes it
possible to save even more power.

Driver needs to use IEEE80211_HW_UAPSD to enable the feature. The current
implementation assumes that firmware takes care of the wakeup and
hardware needing IEEE80211_HW_PS_NULLFUNC_STACK is not yet supported.

Tested with wl1251 on a Nokia N900 and Cisco Aironet 1231G AP and running
various test traffic with ping.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Kalle Valo
2010-01-12 10:42:31 +02:00
committed by John W. Linville
parent 2d46d7c121
commit ab13315af9
9 changed files with 106 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
net/mac80211/ieee80211_i.h
View File

@@ -58,6 +58,15 @@ struct ieee80211_local;
#define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
#define IEEE80211_DEFAULT_UAPSD_QUEUES \
(IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \
IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \
IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \
IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
#define IEEE80211_DEFAULT_MAX_SP_LEN \
IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
struct ieee80211_fragment_entry {
unsigned long first_frag_time;
unsigned int seq;
@@ -78,6 +87,7 @@ struct ieee80211_bss {
u8 dtim_period;
bool wmm_used;
bool uapsd_supported;
unsigned long last_probe_resp;
@@ -285,7 +295,7 @@ struct ieee80211_work {
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u8 supp_rates_len;
bool wmm_used, use_11n;
bool wmm_used, use_11n, uapsd_used;
} assoc;
struct {
u32 duration;
@@ -306,6 +316,7 @@ enum ieee80211_sta_flags {
IEEE80211_STA_DISABLE_11N = BIT(4),
IEEE80211_STA_CSA_RECEIVED = BIT(5),
IEEE80211_STA_MFP_ENABLED = BIT(6),
IEEE80211_STA_UAPSD_ENABLED = BIT(7),
};
struct ieee80211_if_managed {