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

p54: 32-bit tsf timestamps

Browse Source 
tcpdump:
02:15:42.874518 61112184us tsft 48.0 Mb/s 2437 MHz (0x0480) antenna 1 [0x0000000e] CF +QoS Data IV
02:15:42.874557 >>>4356079526us<<< tsft 24.0 Mb/s 2437 MHz (0x0480) antenna 1 [0x0000000e] Acknowledgment
02:15:42.976844 61214513us tsft 1.0 Mb/s 2437 MHz (0x0480) antenna 0 [0x0000000e] Beacon

as one can see on the huge jump, it's very plausible that firmware does not report the
full 64-bit mac time, just the lower 32bit and some kinds of flags...
Therefore if we want a useful timestamp we have to emulate the high bits.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter
2008-09-06 02:56:04 +02:00
committed by John W. Linville
parent 3c9355222c
commit a0db663ff1
3 changed files with 14 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/p54/p54.h
View File

@@ -87,6 +87,8 @@ struct p54_common {
void *cached_vdcf;
unsigned int fw_var;
unsigned int fw_interface;
u32 tsf_low32;
u32 tsf_high32;
struct ieee80211_tx_queue_stats tx_stats[8];
void *eeprom;
struct completion eeprom_comp;