cfg80211

Implement new regulatory interpretation rules as discussed in this thread. In summary, using the notation outlined for mathematical intervals:

 0) for all 1 <= k < n : MAX_k <= MIN_{k+1}

 1) each rule in the regdomain covers the frequency range (MIN_1, MAX_1]

 2) given C = union (over all k = 1 .. n) of (MIN_k, MAX_k] it must be
   true that (CENTER - BW/2, CENTER + BW/2) is a subset of C

 3) it must be true for all 1 <= k <= n:
       if CENTER in (MIN_k, MAX_k] : BW <= BW_k   

 4) This is easier to formulate algorithmically:
   USE_FLAGS = 0
   for k = 1 .. n
       if (CENTER - BW/2, CENTER + BW/2) intersects (MIN_k, MAX_k]:
           USE_FLAGS |= FLAGS_k

mac80211

Bug fixes

probe requests built by mac80211 are for current operating band instead of for scan channel band for hw scan – split up scan request into 2.4 / 5ghz scans?

Janitorial

use debugfs_remove_recursive to remove all the struct dentry pointers from all the structs and all the code to remove debugfs files

AP support

fix the PS filtering code, need to think about how to re-enable it
injected frames need to be tied to another virtual interface to get the software sequence number and keys (only relevant for 11w) right
internal bridge setting (separated STAs in the BSS)
Radar detection (AP DFS or 802.11h)

Issues

Need to stop TX/RX when a radar is detected for the duration of scan for a new channel.

power saving

u-APSD support. Intel has old AP u-APSD patches (incomplete, buffering is done in their firmware)
11v support (eventually)

Roaming

mac80211 drivers use userspace (wpa_supplicant) for roaming (in wpa_supplicant specify ap_scan=1)
better roaming without needing to poll the BSS information needs signal strength triggers so userspace can react to changing conditions
need to export roaming capabilities of device (mac80211 has none, but fullmac cards might be able to autonomously select the best BSS) so that we don't need to configure wpa_supplicant and it can do the right thing automatically
maybe look at deucescan: http://www.csie.ntpu.edu.tw/~yschen/mypapers/IEEE-TVT-2007-1.pdf for wpa_supplicant bg scan algorithm

Wishlist

recognition of the interface an incoming frame belongs to can be made faster (doesn't matter much since typically there are only few)
keep track of stations per virtual interface, helps with the optimisation asked for above

wireless.kernel.org site

fix CSS colours, for example link colours (if you want to start, look at the files in http:/moin/linuxwireless/css/ and send diffs to <johannes AT sipsolutions DOT net>)
fix print view to include a black&white logo
the whole testing thing...
- q/a procedure for stack
- winlab
- info on test coverage
- tests itself need to be documented
- instructions how to run tests