From: Thomas Graf <tgraf@suug.ch>
To: Patrick McHardy <kaber@trash.net>
Cc: David Miller <davem@davemloft.net>,
pablo@netfilter.org, netfilter-devel@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH 0/7 RFC] Netfilter/nf_tables ingress support
Date: Tue, 14 Apr 2015 11:32:02 +0100 [thread overview]
Message-ID: <20150414103202.GC14022@casper.infradead.org> (raw)
In-Reply-To: <20150414101339.GC3004@acer.localdomain>
On 04/14/15 at 11:13am, Patrick McHardy wrote:
> I would actually expect them to use neither TC nor nft, so the most
> interesting number would be the impact if not used. Additionally I'd
> like to see the numbers for moving ingress to use the netfilter hook
> if it is actually used.
>
> The costs of TC actions vs nft are actually not relevant in my
> opinion since we're not replacing anything.
Ingress filtering to implement distribtued packet filters is very
relevant for data centers. The times of no-policy data centers are
gone with multi tenancy.
Not all packets are routed so at least some of the filtering must
occur before prerouting. I'm afraid you can't take yourself out
of the fast path that easily ;-)
This is not a pledge specific to nft. I would like to see more
numbers in general. We are putting APIs and frameworks in place that
we can't remove afterwards without knowing how they really scale and
perform.
next prev parent reply other threads:[~2015-04-14 10:32 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-10 12:15 [PATCH 0/7 RFC] Netfilter/nf_tables ingress support Pablo Neira Ayuso
2015-04-10 12:15 ` [PATCH 1/7] net: refactor __netif_receive_skb_core Pablo Neira Ayuso
2015-04-10 13:47 ` Daniel Borkmann
2015-04-15 16:09 ` Jesper Dangaard Brouer
2015-04-16 5:49 ` Patrick McHardy
2015-04-10 19:56 ` Alexander Duyck
2015-04-15 12:44 ` David Laight
2015-04-15 13:28 ` Alexander Duyck
2015-04-10 12:15 ` [PATCH 2/7] netfilter: add nf_hook_list_active() Pablo Neira Ayuso
2015-04-10 12:15 ` [PATCH 3/7] netfilter: add hook list to nf_hook_state Pablo Neira Ayuso
2015-04-10 12:15 ` [PATCH 4/7] netfilter: cleanup struct nf_hook_ops struct indentation Pablo Neira Ayuso
2015-04-10 13:27 ` Sergei Shtylyov
2015-04-10 12:15 ` [PATCH 5/7] net: add netfilter ingress hook Pablo Neira Ayuso
2015-04-10 13:21 ` Thomas Graf
2015-04-10 13:36 ` Patrick McHardy
2015-04-10 20:17 ` Pablo Neira Ayuso
2015-04-10 21:33 ` Patrick McHardy
2015-04-11 12:55 ` Pablo Neira Ayuso
2015-04-11 13:06 ` Patrick McHardy
2015-04-11 13:32 ` Pablo Neira Ayuso
2015-04-10 20:08 ` Pablo Neira Ayuso
2015-04-10 12:15 ` [PATCH 6/7] netfilter: nf_tables: allow to bind table to net_device Pablo Neira Ayuso
2015-04-10 12:15 ` [PATCH 7/7] netfilter: nf_tables: add netdev table to filter from ingress Pablo Neira Ayuso
2015-04-10 13:22 ` [PATCH 0/7 RFC] Netfilter/nf_tables ingress support Thomas Graf
2015-04-10 20:09 ` Pablo Neira Ayuso
2015-04-13 1:14 ` David Miller
2015-04-13 20:19 ` Patrick McHardy
2015-04-14 9:00 ` Thomas Graf
2015-04-14 9:06 ` Patrick McHardy
2015-04-14 10:08 ` Thomas Graf
2015-04-14 10:13 ` Patrick McHardy
2015-04-14 10:32 ` Thomas Graf [this message]
2015-04-14 20:05 ` Jesper Dangaard Brouer
2015-04-14 12:27 ` Jamal Hadi Salim
2015-04-14 15:12 ` John Fastabend
2015-04-14 15:36 ` Alexei Starovoitov
2015-04-15 7:35 ` John Fastabend
2015-04-15 9:19 ` Daniel Borkmann
2015-04-15 16:24 ` Alexei Starovoitov
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