Tx Rate Chosing

Jouni Malinen jkmaline at cc.hut.fi
Tue May 25 09:25:09 EDT 2004

On Tue, May 25, 2004 at 05:14:44PM +0530, Anand S. Katti wrote:

> Is information exchanged about supported rates during Association is being
> used in eventually settling to an initial TX rate for the connection ?
> If yes, then what initial rate they settle on ?

Yes, the maximum rate supported by both ends is tried first.

> In the function hostap_add_sta(struct ap_data *ap, u8 *sta_addr)

>                 memset(sta->supported_rates, 0,
> sizeof(sta->supported_rates));
>                 /* No way of knowing which rates are supported since we
> did not
>                  * get supported rates element from beacon/assoc req.
> Assume
>                  * that remote end supports all 802.11b rates. */

This special case is used only for AP-AP connection, not for normal
station association.

Jouni Malinen                                            PGP id EFC895FA

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