This patch series implements basic background scanning in mac80211
by interrupting the scan after each scanned channel to allow RX/TX.
I only tested the patches on current wireless-testing with iwlagn
in sw-scan mode and it works fine already. Nevertheless, it would
be great if somebody could test the patches on other hardware as well.
A scan now takes ~13s on my iwl4965 with a total of 31 channels
(17 passive channels) while associated. Two possibilities for the
future to reduce the time a scan takes:
- leave the operating channel as soon as RX and TX were idle for
a small period of time (currently we just stay 250ms on the
operating channel after each scanned channel).
- Scan multiple channels in a row if the qos latency allows us to
do so.
Helmut
---
Helmut Schaa (7):
cfg80211: increase scan result expire time
mac80211: rename scan_state to next_scan_state
mac80211: implement basic background scanning
mac80211: Replace {sw,hw}_scanning variables with a bitfield
mac80211: introduce a new scan state "decision"
mac80211: advance the state machine immediately if no delay is needed
mac80211: refactor the scan code
net/mac80211/ibss.c | 2
net/mac80211/ieee80211_i.h | 41 ++++++
net/mac80211/iface.c | 4 -
net/mac80211/main.c | 2
net/mac80211/mesh.c | 2
net/mac80211/mlme.c | 8 +
net/mac80211/rx.c | 8 +
net/mac80211/scan.c | 300 ++++++++++++++++++++++++++++++++------------
net/mac80211/tx.c | 6 -
net/wireless/scan.c | 2
10 files changed, 275 insertions(+), 100 deletions(-)
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