15dbf1b7b7
iwl3945 <---> mac80211 <----> wpa_supplicant <---> NetworkManager When a hardware scan is completed and another scan is requested in less than two seconds, iwlwifi will not do the second scan and will pass the error code -EAGAIN back to mac80211 where it quickly dies. The error code is not passed along to the calling program wpa_supplicant. After a timeout, wpa_supplicant will just give up but it will not know why the scan failed. This is a weakness in the design. I ran into this issue when I was trying to figure out why it takes more an a minute for NetworkManager to connect after Networking has been disabled and then re-enabled. I found a good deal of unnecessary work being done because mac80211 requests authentication when the interface is not configured, the ANY mode. I created an experimental passive (NOTANY) mode for mac80211 to eliminate this case. Then NetworkManager became so fast that I ran into the iwlwifi 2 second delay next scan issue which we are discussing. The patch resolves the problem by bypassing the delay if the scan request is a direct scan. It should do less harm to the hardware. Signed-off-by: Bill Moss <bmoss@CLEMSON.EDU> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> |
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.. | ||
ath5k | ||
b43 | ||
b43legacy | ||
hostap | ||
iwlwifi | ||
libertas | ||
p54 | ||
prism54 | ||
rt2x00 | ||
zd1211rw | ||
adm8211.c | ||
adm8211.h | ||
airo_cs.c | ||
airo.c | ||
airo.h | ||
airport.c | ||
arlan-main.c | ||
arlan-proc.c | ||
arlan.h | ||
atmel_cs.c | ||
atmel_pci.c | ||
atmel.c | ||
atmel.h | ||
hermes_rid.h | ||
hermes.c | ||
hermes.h | ||
i82586.h | ||
i82593.h | ||
ipw2100.c | ||
ipw2100.h | ||
ipw2200.c | ||
ipw2200.h | ||
Kconfig | ||
Makefile | ||
netwave_cs.c | ||
orinoco_cs.c | ||
orinoco_nortel.c | ||
orinoco_pci.c | ||
orinoco_pci.h | ||
orinoco_plx.c | ||
orinoco_tmd.c | ||
orinoco.c | ||
orinoco.h | ||
ray_cs.c | ||
ray_cs.h | ||
rayctl.h | ||
rndis_wlan.c | ||
rtl818x.h | ||
rtl8180_dev.c | ||
rtl8180_grf5101.c | ||
rtl8180_grf5101.h | ||
rtl8180_max2820.c | ||
rtl8180_max2820.h | ||
rtl8180_rtl8225.c | ||
rtl8180_rtl8225.h | ||
rtl8180_sa2400.c | ||
rtl8180_sa2400.h | ||
rtl8180.h | ||
rtl8187_dev.c | ||
rtl8187_rtl8225.c | ||
rtl8187_rtl8225.h | ||
rtl8187.h | ||
spectrum_cs.c | ||
strip.c | ||
wavelan_cs.c | ||
wavelan_cs.h | ||
wavelan_cs.p.h | ||
wavelan.c | ||
wavelan.h | ||
wavelan.p.h | ||
wl3501_cs.c | ||
wl3501.h | ||
zd1201.c | ||
zd1201.h |