On 06/29/2011 03:55 PM, Jouni Malinen wrote:
On Wed, Jun 29, 2011 at 03:43:20PM +0200, Michel Alexandre Salim wrote:
My first attempt to solve this was to use 'iwconfig wlan0 set rate
54M' -- but this yields "Operation not supported". How about making
a request for a rate of 54M or below switch the device to 802.11g
mode (and optionally, a rate of 11M or below => 802.11b mode)? That
way we don't need to invent a new interface at all. How would I go
about adding support for rate setting requests to the driver?
I would first move from WEXT to nl80211 in order to get any chance of
getting the change accepted.. We have a somewhat similar mechanism in
NL80211_CMD_SET_TX_BITRATE_MASK, but it does not address HT rates at
all, so some additions would be needed. For example, a new attribute to
the command could be used to set TX mask for MCS indexes and if none are
allowed, HT could be disabled. Though, a cleaner mechanism would likely
be to just provide an explicit attribute to disable 802.11n. If that is
done outside the scope of a single connection, that would be available
as a manual workaround even without modifications to
wpa_supplicant/NM/ConnMan.
Thanks for the pointers -- I'll take a look at it and get back when I
have working code.
--
Michel Alexandre Salim
µblog: http://identi.ca/hircus
http://twitter.com/hircus
GPG key ID: 78884778
() ascii ribbon campaign - against html e-mail
/\ www.asciiribbon.org - against proprietary attachments
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
