From: Johannes Berg <johannes@sipsolutions.net>
To: Ben Greear <greearb@candelatech.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: [wireless-next PATCH 3/5] wifi: Allow overriding some HT information.
Date: Thu, 03 Nov 2011 09:32:11 +0100 [thread overview]
Message-ID: <1320309131.3950.9.camel@jlt3.sipsolutions.net> (raw)
In-Reply-To: <4EB1860E.5080800@candelatech.com>
On Wed, 2011-11-02 at 11:03 -0700, Ben Greear wrote:
> >>>> /* add attributes here, update the policy in nl80211.c */
> >>
> >> I copied some of that code from nl80211_set_station, which appears to
> >> also forget to check the length for the NL80211_ATTR_HT_CAPABILITY
> >> object. Is there some reason why it doesn't need to check, or does
> >> that code need fixing as well?
> >
> > NL80211_ATTR_HT_CAPABILITY in particular *has* a policy entry.
>
> Ahh, I didn't realize that's what was meant by policy. Mind if
> I change that comment to something like what is below?
>
> /* add attributes here, update the nl80211_policy array in nl80211.c */
That seems reasonable, though there are multiple policies for
differently nested attributes, but I guess anyone who understands that
will get far enough anyway :-)
FWIW, I just found that the exact example you pointed out had a bug --
NLA_BINARY enforces a *max*, not *min* length. There's a patch in flight
to fix it.
johannes
next prev parent reply other threads:[~2011-11-03 8:32 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-28 5:11 [wireless-next PATCH 1/5] mac80211: Support forcing station to disable 11n greearb
2011-10-28 5:11 ` [wireless-next PATCH 2/5] wifi: Support disabling ht40 greearb
2011-10-28 8:09 ` Johannes Berg
2011-10-28 16:25 ` Ben Greear
2011-10-28 5:11 ` [wireless-next PATCH 3/5] wifi: Allow overriding some HT information greearb
2011-10-28 8:12 ` Johannes Berg
2011-10-28 16:33 ` Ben Greear
2011-11-02 8:13 ` Johannes Berg
2011-11-02 16:59 ` Ben Greear
2011-11-02 17:49 ` Johannes Berg
2011-11-02 18:03 ` Ben Greear
2011-11-03 8:32 ` Johannes Berg [this message]
2011-10-28 5:11 ` [wireless-next PATCH 4/5] wifi: Warn if cannot add station debugfs entries greearb
2011-10-28 8:13 ` Johannes Berg
2011-10-28 16:13 ` Ben Greear
2011-10-28 5:11 ` [wireless-next PATCH 5/5] wifi-debugfs: Fix AMSDU rate printout greearb
2011-10-28 8:13 ` Johannes Berg
2011-11-17 17:49 ` Ben Greear
2011-11-17 18:03 ` John W. Linville
2011-10-28 5:15 ` [wireless-next PATCH 1/5] mac80211: Support forcing station to disable 11n Ben Greear
2011-10-28 8:08 ` Johannes Berg
2011-10-28 16:24 ` Ben Greear
2011-11-02 7:56 ` Johannes Berg
2011-11-02 16:37 ` Ben Greear
2011-10-28 18:55 ` Ben Greear
2011-11-02 7:53 ` Johannes Berg
2011-11-02 16:34 ` Ben Greear
2011-11-02 17:51 ` Johannes Berg
2011-11-03 6:04 ` Ben Greear
2011-11-03 8:30 ` Johannes Berg
2011-11-03 18:17 ` Ben Greear
2011-11-04 14:42 ` Johannes Berg
2011-11-04 16:11 ` Ben Greear
2011-11-04 16:17 ` Johannes Berg
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