[net80211] initial "driver does sequence number handling" This implements: * optionally deferring sequence number allocation into the driver * don't grab/release the net80211 TX lock if the driver does sequence number allocation * write a...

[adrian]

Summary

...net80211 function that will assign sequence numbers to

frames (which I haven't yet completely vetted!)

• teach ath(4) about using this new function to fill out sequence numbers for frames as appropriate.

• ath(4) - STA mode only; not IBSS or hostap modes yet!

TODO:

• Go look at whether cabq frames should have sequence numbers allocated /after/ the beacon frame sequence numbers, for non-QoS data frames.

[adrian]

Yeah ,there are other comments in ath(4) that aren't part of this commit.

[avos]

sys/net80211/ieee80211_output.c

3736

duplicates IEEE80211_HAS_SEQ check; one of them is not needed.

3774

already dropped after IEEE80211_HAS_SEQ check

3793

looks like ieee80211_fragment() will be broken after this change (not too critical since fragment number is usually assigned by firmware).

[avos]

Other parts look fine.