From: Florian Westphal <fw@strlen.de>
To: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>,
Shmulik Ladkani <shmulik.ladkani@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
WANG Cong <xiyou.wangcong@gmail.com>,
Eric Dumazet <edumazet@google.com>,
netdev@vger.kernel.org, Florian Westphal <fw@strlen.de>
Subject: Re: [PATCH net-next 4/4] net/sched: act_mirred: Implement ingress actions
Date: Sun, 25 Sep 2016 20:33:51 +0200 [thread overview]
Message-ID: <20160925183351.GB3307@breakpoint.cc> (raw)
In-Reply-To: <57E7FAC7.6090904@iogearbox.net>
Daniel Borkmann <daniel@iogearbox.net> wrote:
> On 09/25/2016 03:05 PM, Jamal Hadi Salim wrote:
> >MAX_RED_LOOP (stands for "Maximum Redirect loop") still exists in
> >current code. The idea above was that we would increment the rttl
> >counter once and if we saw it again upto MAX_RED_LOOP we would assume
> >a loop and drop the packet (at the time i didnt think it was wise to
> >let the actions be in charge of setting the RTTL; it had to be central
> >core code - but it may not be neccessary)
> >
> >Florian, when we discussed I said it was fine to reclaim those 3 bits
> >on tc verdict for RTTL at the time because i had taken out the
> >feature and never added it back. Your comment at the time was we can
> >add it back when someone shows up with the feature.
> >Shmulik is looking to add it.
>
> Why not just reuse xmit_recursion, which is what we did in tc cls_bpf
> programs f.e. see __bpf_tx_skb()? Would be a pity to waste 3 bits on
> this in the skb.
+1, don't (yet) understand why a per-skb counter is required for this.
next prev parent reply other threads:[~2016-09-25 18:33 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-22 13:21 [PATCH net-next 0/4] act_mirred: Ingress actions support Shmulik Ladkani
2016-09-22 13:21 ` [PATCH net-next 1/4] net/sched: act_mirred: Rename tcfm_ok_push to tcfm_mac_header_xmit Shmulik Ladkani
2016-09-27 10:30 ` Daniel Borkmann
2016-09-27 18:24 ` Shmulik Ladkani
2016-09-22 13:21 ` [PATCH net-next 2/4] net/sched: act_mirred: Refactor detection whether dev needs xmit at mac header Shmulik Ladkani
2016-09-22 13:21 ` [PATCH net-next 3/4] net/sched: tc_mirred: Rename public predicates 'is_tcf_mirred_redirect' and 'is_tcf_mirred_mirror' Shmulik Ladkani
2016-09-22 13:21 ` [PATCH net-next 4/4] net/sched: act_mirred: Implement ingress actions Shmulik Ladkani
2016-09-22 14:54 ` Eric Dumazet
2016-09-22 18:27 ` Shmulik Ladkani
2016-09-22 18:42 ` Eric Dumazet
2016-09-22 23:40 ` Jamal Hadi Salim
2016-09-23 5:11 ` Shmulik Ladkani
2016-09-23 12:48 ` Jamal Hadi Salim
2016-09-23 15:40 ` Shmulik Ladkani
2016-09-25 0:20 ` Cong Wang
2016-09-25 13:05 ` Jamal Hadi Salim
2016-09-25 16:26 ` Daniel Borkmann
2016-09-25 18:33 ` Florian Westphal [this message]
2016-09-25 23:47 ` Jamal Hadi Salim
2016-09-25 23:31 ` Jamal Hadi Salim
2016-09-25 17:33 ` Shmulik Ladkani
2016-09-25 18:31 ` Florian Westphal
2016-09-26 1:15 ` Jamal Hadi Salim
2016-09-26 1:35 ` Florian Westphal
2016-09-26 1:40 ` Jamal Hadi Salim
2016-09-26 14:43 ` Hannes Frederic Sowa
2016-09-26 14:53 ` Daniel Borkmann
2016-09-26 15:12 ` Hannes Frederic Sowa
2016-09-26 15:53 ` Daniel Borkmann
2016-09-26 15:26 ` Shmulik Ladkani
2016-09-25 23:45 ` Jamal Hadi Salim
2016-09-25 0:07 ` Cong Wang
2016-09-25 13:39 ` Jamal Hadi Salim
2016-09-26 4:55 ` Cong Wang
2016-09-25 17:59 ` Shmulik Ladkani
2016-09-26 4:56 ` Cong Wang
2016-09-24 23:50 ` Cong Wang
2016-09-27 5:56 ` David Miller
2016-09-27 8:07 ` Shmulik Ladkani
2016-09-27 10:39 ` Daniel Borkmann
2016-09-27 13:44 ` David Miller
2016-09-27 14:18 ` Shmulik Ladkani
2016-09-27 14:47 ` Daniel Borkmann
2016-09-27 14:06 ` Jamal Hadi Salim
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