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Re: [RFC V2] bcm43xx-mac80211: Provide information to allow transmission rate decreases

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Johannes Berg wrote:
On Thu, 2007-08-02 at 15:03 +0200, Michael Buesch wrote:

So, what's the point of this "excessive retries" field anyway?
We already have an "acked" bit. So if it's not set, but we expected an
ack, what's the point of setting excessive retries in the driver?
the rc algo sould know _anyway_, as it has the "acked" and the
"we wanted to have an ack" bits.

No idea. I guess you get to dig through the code and remove it ;)

When I first started investigating the problem of mac80211 not reducing the rate as I moved away from the AP, it seemed to me that the decision regarding excessive retries should be made in mac80211, not in the driver; however, I have had extreme difficulty in getting any changes into mac80211 on several occasions. Linville assures me that he has had private discussions about this problem; however, I needed a quick fix and couldn't stand any protracted discussion and/or review delays. I knew Michael would be tough, but that his comments would not be delayed.

At the moment, I have more pressing matters to resolve than fixing this problem in mac80211; however, I feel really good that the port of bcm43xx-softmac to mac80211 has this issue.

Larry

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