From: David Miller <davem@davemloft.net>
To: john.fastabend@gmail.com
Cc: brouer@redhat.com, netdev@vger.kernel.org, andy@greyhouse.net,
daniel@iogearbox.net, ast@fb.com, alexander.duyck@gmail.com,
bjorn.topel@intel.com, jakub.kicinski@netronome.com,
ecree@solarflare.com, sgoutham@cavium.com,
Yuval.Mintz@cavium.com, saeedm@mellanox.com
Subject: Re: [RFC PATCH 00/12] Implement XDP bpf_redirect vairants
Date: Thu, 13 Jul 2017 11:21:04 -0700 (PDT) [thread overview]
Message-ID: <20170713.112104.758301784190532188.davem@davemloft.net> (raw)
In-Reply-To: <5967A71F.9010409@gmail.com>
From: John Fastabend <john.fastabend@gmail.com>
Date: Thu, 13 Jul 2017 10:00:15 -0700
> On 07/13/2017 09:16 AM, Jesper Dangaard Brouer wrote:
>> On Thu, 13 Jul 2017 13:14:30 +0200
>> Jesper Dangaard Brouer <brouer@redhat.com> wrote:
>>
>>> I'm still getting crashes (but much harder to provoke), but I figured
>>> out why. We sort of missed one case, where map_to_flush gets set, when
>>> the ndo_xdp_xmit() call starts to fail, and the ixgbe driver then
>>> forgets to call xdp_do_flush_map, if all packets in that NAPI cycle
>>> failed. We could blame the driver, but yhe clean solution is making
>>> sure, that we don't set map_to_flush when the __bpf_tx_xdp() call
>>> fails. It should also handle the other case I fixed .... I'll cleanup
>>> my PoC-fix patch, test it and provide it here.
>>
>> I changed flow in the function to be:
>
>
> Great, I'll merge this, the other couple fixes, and the bitops optimization and
> hopefully then we are set. I'll post a v2 and we can do some final checks.
I am so looking forward to merging this, great work everyone.
next prev parent reply other threads:[~2017-07-13 18:21 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-07 17:34 [RFC PATCH 00/12] Implement XDP bpf_redirect vairants John Fastabend
2017-07-07 17:34 ` [RFC PATCH 01/12] ixgbe: NULL xdp_tx rings on resource cleanup John Fastabend
2017-07-07 17:35 ` [RFC PATCH 02/12] net: xdp: support xdp generic on virtual devices John Fastabend
2017-07-07 17:35 ` [RFC PATCH 03/12] xdp: add bpf_redirect helper function John Fastabend
2017-07-09 13:37 ` Saeed Mahameed
2017-07-10 17:23 ` John Fastabend
2017-07-11 14:09 ` Andy Gospodarek
2017-07-11 18:38 ` John Fastabend
2017-07-11 19:38 ` Jesper Dangaard Brouer
2017-07-12 11:00 ` Saeed Mahameed
2017-07-07 17:35 ` [RFC PATCH 04/12] xdp: sample program for new bpf_redirect helper John Fastabend
2017-07-07 17:36 ` [RFC PATCH 05/12] net: implement XDP_REDIRECT for xdp generic John Fastabend
2017-07-07 17:36 ` [RFC PATCH 06/12] ixgbe: add initial support for xdp redirect John Fastabend
2017-07-07 17:36 ` [RFC PATCH 07/12] xdp: add trace event " John Fastabend
2017-07-07 17:37 ` [RFC PATCH 08/12] bpf: add devmap, a map for storing net device references John Fastabend
2017-07-08 18:57 ` Jesper Dangaard Brouer
2017-07-07 17:37 ` [RFC PATCH 09/12] bpf: add bpf_redirect_map helper routine John Fastabend
2017-07-07 17:37 ` [RFC PATCH 10/12] xdp: Add batching support to redirect map John Fastabend
2017-07-10 17:53 ` Jesper Dangaard Brouer
2017-07-10 17:56 ` John Fastabend
2017-07-07 17:38 ` [RFC PATCH 11/12] net: add notifier hooks for devmap bpf map John Fastabend
2017-07-07 17:38 ` [RFC PATCH 12/12] xdp: bpf redirect with map sample program John Fastabend
2017-07-07 17:48 ` [RFC PATCH 00/12] Implement XDP bpf_redirect vairants John Fastabend
2017-07-08 9:46 ` David Miller
2017-07-08 19:06 ` Jesper Dangaard Brouer
2017-07-10 18:30 ` Jesper Dangaard Brouer
2017-07-11 0:59 ` John Fastabend
2017-07-11 14:23 ` Jesper Dangaard Brouer
2017-07-11 18:26 ` John Fastabend
2017-07-13 11:14 ` Jesper Dangaard Brouer
2017-07-13 16:16 ` Jesper Dangaard Brouer
2017-07-13 17:00 ` John Fastabend
2017-07-13 18:21 ` David Miller [this message]
2017-07-11 15:36 ` Jesper Dangaard Brouer
2017-07-11 17:48 ` John Fastabend
2017-07-11 18:01 ` Jesper Dangaard Brouer
2017-07-11 18:29 ` John Fastabend
2017-07-11 18:44 ` Jesper Dangaard Brouer
2017-07-11 18:56 ` John Fastabend
2017-07-11 19:19 ` Jesper Dangaard Brouer
2017-07-11 19:37 ` John Fastabend
2017-07-16 8:23 ` Jesper Dangaard Brouer
2017-07-17 17:04 ` Jesse Brandeburg
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=20170713.112104.758301784190532188.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=Yuval.Mintz@cavium.com \
--cc=alexander.duyck@gmail.com \
--cc=andy@greyhouse.net \
--cc=ast@fb.com \
--cc=bjorn.topel@intel.com \
--cc=brouer@redhat.com \
--cc=daniel@iogearbox.net \
--cc=ecree@solarflare.com \
--cc=jakub.kicinski@netronome.com \
--cc=john.fastabend@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=saeedm@mellanox.com \
--cc=sgoutham@cavium.com \
/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).