From: Thomas Graf <tgraf@suug.ch>
To: Daniel Borkmann <dborkman@redhat.com>
Cc: David Miller <davem@davemloft.net>,
luto@amacapital.net, torvalds@linux-foundation.org,
kaber@trash.net, netdev@vger.kernel.org
Subject: Re: Netlink mmap tx security?
Date: Thu, 16 Oct 2014 08:07:53 +0100 [thread overview]
Message-ID: <20141016070753.GA16738@casper.infradead.org> (raw)
In-Reply-To: <543F6998.5090000@redhat.com>
On 10/16/14 at 08:45am, Daniel Borkmann wrote:
> On 10/15/2014 04:09 AM, David Miller wrote:
> >That would work as well.
> >
> >There are pros and cons to all of these approaches.
> >
> >I was thinking that if we do the "TX mmap --> copy to kernel buffer"
> >approach, then if in the future we find a way to make it work
> >reliably, we can avoid the copy. And frankly performance wise it's no
> >worse than what happens via normal sendmsg() calls.
> >
> >And all applications using NETLINK_RX_RING keep working and keep
> >getting the performance boost.
>
> That would be better, yes. This would avoid having such a TPACKET_V*
> API chaos we have in packet sockets if this could be fixed for netlink
> eventually.
Only saw the second part of Dave's message now. I agree that this
is even a better option.
next prev parent reply other threads:[~2014-10-16 7:07 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CALCETrWsCqy7KEKPTOeHjrO1c2JE1E_seO_J+yA=sYFhS11NXQ@mail.gmail.com>
2014-05-12 21:08 ` Netlink mmap tx security? Andy Lutomirski
2014-10-11 22:29 ` Andy Lutomirski
2014-10-11 23:09 ` David Miller
2014-10-14 19:19 ` David Miller
2014-10-14 19:33 ` Andy Lutomirski
2014-10-14 20:00 ` David Miller
2014-10-14 22:16 ` Andy Lutomirski
2014-10-15 2:01 ` David Miller
2014-10-15 2:03 ` Andy Lutomirski
2014-10-15 2:09 ` David Miller
2014-10-16 6:45 ` Daniel Borkmann
2014-10-16 7:07 ` Thomas Graf [this message]
2014-12-16 22:58 ` David Miller
2014-12-16 23:58 ` Daniel Borkmann
2014-12-17 16:27 ` Thomas Graf
2014-12-18 17:36 ` David Miller
2014-12-17 0:02 ` Eric Dumazet
2014-12-17 16:26 ` Thomas Graf
2014-12-18 10:30 ` [PATCH net] netlink: Don't reorder loads/stores before marking mmap netlink frame as available Thomas Graf
2014-12-18 17:36 ` David Miller
2014-12-18 19:13 ` Linus Torvalds
2014-10-15 23:45 ` Netlink mmap tx security? Daniel Borkmann
2014-10-15 23:57 ` David Miller
2014-10-15 23:58 ` Andy Lutomirski
2014-10-16 3:34 ` David Miller
2014-10-16 5:52 ` Thomas Graf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20141016070753.GA16738@casper.infradead.org \
--to=tgraf@suug.ch \
--cc=davem@davemloft.net \
--cc=dborkman@redhat.com \
--cc=kaber@trash.net \
--cc=luto@amacapital.net \
--cc=netdev@vger.kernel.org \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).