Date: Sun, 16 May 2004 21:08:16 -0600 From: "James Bowman" <jamesb@acelere.net> To: freebsd-current@freebsd.org Subject: hostap TX fix in 5.x [Fwd: Re: wi hostap speed] Message-ID: <20040516210816.M45998@acelere.net>
next in thread | raw e-mail | index | archive | help
I spent a few hours tinkering (tampering?) with this driver, and have not
exactly a fix, but a clear indication of what the problem is.
Verified (using the quick hack below): download speed geoes up from 170
kbytes/sec to 470 kbytes/sec, which is what I'd expect on an 11Mbps network.
If anyone's interested, here it is:
The Intersil manual on page 4-28 says that transmit packets need to have their
TxRate field filled in with 10,20,55 or 110, depending on the transmission speed.
The 4.X driver sets the field tx_frame.wi_tx_rate in function
wihap_check_tx(), called from wi_start().
The 5.X driver calls this field frmhdr.wi_tx_rate, but leaves it zero.
If you want to run at 11MBps, add a line
frmhdr.wi_tx_rate = 110;
in wi_start(), just before the call to wi_write_bap().
(Obviously, this is just a cheesy hack. The real code would have to find the
actual tx rate. I just want to point out where the problem lies).
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040516210816.M45998>