Re: [PATCH v3 2/2] wifi: mac80211: Assign tx-stats to the proper link.

[Johannes Berg <johannes@sipsolutions.net>]

On Wed, 2024-10-09 at 09:49 -0700, greearb@candelatech.com wrote:
> From: Ben Greear <greearb@candelatech.com>
> 
> For drivers that can report the tx link-id, account tx
> stats against that link.  If we cannot determine tx link,
> then use deflink.

I was hoping Miri would look at the other patch ... but now that I
consider it again, this should probably come with some documentation
updates? Right now, it only says:

 * @IEEE80211_TX_CTRL_MLO_LINK: If not @IEEE80211_LINK_UNSPECIFIED, this
 *      frame should be transmitted on the specific link. This really is
 *      only relevant for frames that do not have data present, and is
 *      also not used for 802.3 format frames. Note that even if the frame
 *      is on a specific link, address translation might still apply if
 *      it's intended for an MLD.

and actually it's in the _control_ section of the TX info, so it's not
generally even preserved over to the _status_ section.

So rather than reusing this, we probably just need to introduce a new
_status_ field for it. And probably make it link_id+1 so 0 means no
value (this works because link ID 15 is invalid).

johannes