On Tue, Jan 31, 2012 at 7:45 AM, Johannes Berg
[off-list ref] wrote:

On 1/26/2012 4:37 AM, Victor Goldenshtein wrote:

quoted

Prior starting tx on DFS channels, the DFS master
device shall perform a Channel Availability Check
to ensure that there is no radar interference on
those channels. Once CAC done, the tx can be
enabled with ieee80211_dfs_en_tx().

How do you expect this to be used by the device? It seems that it should
have the side effect of lifting some TX-prohibited flag instead?

In wl12xx driver we starting the AP role, and clearing FLAG_DFS_CAC_IN_PROGRESS.
Maybe the function name is misleading here ? maybe we should rename it
to something like resume_dfs_cac() - because it is called at the end
of the CAC test.

The other question is whether we want to add DFS flags into mac? I
mean something like FLAG_DFS_CAC_IN_PROGRESS.

-- 
Thanks,
Victor.