From: Edward Cree <ecree@solarflare•com>
To: Eric Dumazet <eric.dumazet@gmail•com>
Cc: <netdev@vger•kernel.org>, David Miller <davem@davemloft•net>,
"Jesper Dangaard Brouer" <brouer@redhat•com>,
<linux-net-drivers@solarflare•com>
Subject: Re: [RFC PATCH net-next 7/8] net: ipv4: listified version of ip_rcv
Date: Tue, 19 Apr 2016 17:50:45 +0100 [thread overview]
Message-ID: <571661E5.7010304@solarflare.com> (raw)
In-Reply-To: <1461077434.10638.189.camel@edumazet-glaptop3.roam.corp.google.com>
On 19/04/16 15:50, Eric Dumazet wrote:
> The main problem in UDP stack today is having to lock the socket because
> of the dumb forward allocation problem.
I'm not quite sure what you're referring to here, care to educate me?
> Are you really going to provide
> a list of skbs up to _one_ UDP socket ?
In principle we should be able to take it that far, yes. AFAICT the
socket already has a receive queue that we end up appending the packet
to (and which I presume the recvmsg() syscall pulls from), I don't see
why we couldn't just splice a list of skbs on the end rather than
appending them one by one. Thus amortising looking up the socket.
next prev parent reply other threads:[~2016-04-19 16:50 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-19 13:33 [RFC PATCH net-next 0/8] Handle multiple received packets at each stage Edward Cree
2016-04-19 13:34 ` [RFC PATCH net-next 1/8] net: core: trivial netif_receive_skb_list() entry point Edward Cree
2016-04-19 13:35 ` [RFC PATCH net-next 2/8] sfc: batch up RX delivery on EF10 Edward Cree
2016-04-19 14:47 ` Eric Dumazet
2016-04-19 16:36 ` Edward Cree
2016-04-19 17:20 ` Eric Dumazet
2016-04-19 17:42 ` Edward Cree
2016-04-19 18:02 ` Eric Dumazet
2016-04-19 13:35 ` [RFC PATCH net-next 3/8] net: core: unwrap skb list receive slightly further Edward Cree
2016-04-19 13:35 ` [RFC PATCH net-next 4/8] net: core: Another step of skb receive list processing Edward Cree
2016-04-19 13:36 ` [RFC PATCH net-next 5/8] net: core: another layer of lists, around PF_MEMALLOC skb handling Edward Cree
2016-04-19 13:36 ` [RFC PATCH net-next 6/8] net: core: propagate SKB lists through packet_type lookup Edward Cree
2016-04-19 13:37 ` [RFC PATCH net-next 7/8] net: ipv4: listified version of ip_rcv Edward Cree
2016-04-19 14:50 ` Eric Dumazet
2016-04-19 15:46 ` Tom Herbert
2016-04-19 16:54 ` Eric Dumazet
2016-04-19 17:12 ` Edward Cree
2016-04-19 17:54 ` Eric Dumazet
2016-04-19 18:38 ` Tom Herbert
2016-04-19 16:50 ` Edward Cree [this message]
2016-04-19 18:06 ` Eric Dumazet
2016-04-21 17:24 ` Edward Cree
2016-04-19 13:37 ` [RFC PATCH net-next 8/8] net: ipv4: listify ip_rcv_finish Edward Cree
2016-04-19 19:11 ` [RFC PATCH net-next 0/8] Handle multiple received packets at each stage Jesper Dangaard Brouer
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