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Message-ID: <20181022114002.GA10218@hmswarspite.think-freely.org>
Date: Mon, 22 Oct 2018 07:40:02 -0400
From: Neil Horman <nhorman@...driver.com>
To: Xin Long <lucien.xin@...il.com>
Cc: network dev <netdev@...r.kernel.org>, linux-sctp@...r.kernel.org,
Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
davem@...emloft.net
Subject: Re: [PATCH net-next 0/3] sctp: add support for sk_reuseport
On Sun, Oct 21, 2018 at 12:43:35PM +0800, Xin Long wrote:
> sctp sk_reuseport allows multiple socks to listen on the same port and
> addresses, as long as these socks have the same uid. This works pretty
> much as TCP/UDP does, the only difference is that sctp is multi-homing
> and all the bind_addrs in these socks will have to completely matched,
> otherwise listen() will return err.
>
> The below is when 5 sockets are listening on 172.16.254.254:6400 on a
> server, 26 sockets on a client connect to 172.16.254.254:6400 and each
> may be processed by a different socket on the server which is selected
> by hash(lport, pport, paddr) in reuseport_select_sock():
>
> # ss --sctp -nn
> State Recv-Q Send-Q Local Address:Port Peer Address:Port
> LISTEN 0 10 172.16.254.254:6400 *:*
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.2.1:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.2.4:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.3.3:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.3.4:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.5.2:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.5.3:1234
> LISTEN 0 10 172.16.254.254:6400 *:*
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.1.3:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.1.4:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.3.2:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.4.1:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.4.2:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.4.3:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.4.4:1234
> LISTEN 0 10 172.16.254.254:6400 *:*
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.1.2:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.3.5:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.4.5:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.253.253:1234
> LISTEN 0 10 172.16.254.254:6400 *:*
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.2.2:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.2.3:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.5.4:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.5.5:1234
> LISTEN 0 10 172.16.254.254:6400 *:*
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.1.1:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.1.5:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.2.5:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.3.1:1234
> `- ESTAB 0 0 172.16.254.254%eth1:6400 172.16.5.1:1234
>
> Xin Long (3):
> sctp: do reuseport_select_sock in __sctp_rcv_lookup_endpoint
> sctp: add sock_reuseport for the sock in __sctp_hash_endpoint
> sctp: process sk_reuseport in sctp_get_port_local
>
> include/net/sctp/sctp.h | 2 +-
> include/net/sctp/structs.h | 6 ++-
> net/core/sock_reuseport.c | 1 +
> net/sctp/bind_addr.c | 28 ++++++++++
> net/sctp/input.c | 129 ++++++++++++++++++++++++++++++++-------------
> net/sctp/socket.c | 49 +++++++++++------
> 6 files changed, 162 insertions(+), 53 deletions(-)
>
> --
> 2.1.0
>
>
Series
Acked-by: Neil Horman <nhorman@...driver.com>
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