From: Johannes Berg <johannes@sipsolutions.net>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>
Cc: netdev <netdev@vger.kernel.org>
Subject: __sk_buff.data_end
Date: Wed, 19 Apr 2017 23:31:00 +0200 [thread overview]
Message-ID: <1492637460.22185.6.camel@sipsolutions.net> (raw)
Hi Alexei, Daniel,
I'm looking at adding the __wifi_sk_buff I talked about, and I notice
that it uses CB space to store data_end. Unfortunately, in a lot of
cases, we don't have any CB space to spare in wifi.
Is there any way to generate a series of instructions that instead does
the necessary calculations? I don't actually *see* such a way, because
I don't see how I could have a scratch register or scratch stack space,
but perhaps there's a way to do it?
johannes
next reply other threads:[~2017-04-19 21:31 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-19 21:31 Johannes Berg [this message]
2017-04-19 22:20 ` __sk_buff.data_end Johannes Berg
2017-04-20 0:01 ` __sk_buff.data_end Daniel Borkmann
2017-04-20 0:12 ` __sk_buff.data_end Alexei Starovoitov
2017-04-20 0:38 ` __sk_buff.data_end Daniel Borkmann
2017-04-20 6:07 ` __sk_buff.data_end Johannes Berg
2017-04-20 6:06 ` __sk_buff.data_end Johannes Berg
2017-04-20 6:01 ` __sk_buff.data_end Johannes Berg
2017-04-20 14:10 ` __sk_buff.data_end Daniel Borkmann
2017-04-20 14:17 ` __sk_buff.data_end Johannes Berg
2017-04-20 14:28 ` __sk_buff.data_end Daniel Borkmann
2017-04-20 14:32 ` __sk_buff.data_end Johannes Berg
2017-04-20 14:46 ` __sk_buff.data_end Daniel Borkmann
2017-04-20 14:48 ` __sk_buff.data_end Johannes Berg
2017-04-19 23:51 ` __sk_buff.data_end Daniel Borkmann
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