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Message-ID: <20200514062622.GA8564@lst.de>
Date: Thu, 14 May 2020 08:26:22 +0200
From: Christoph Hellwig <hch@....de>
To: David Howells <dhowells@...hat.com>
Cc: Christoph Hellwig <hch@....de>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
Eric Dumazet <edumazet@...gle.com>,
linux-nvme@...ts.infradead.org, linux-sctp@...r.kernel.org,
target-devel@...r.kernel.org, linux-afs@...ts.infradead.org,
drbd-dev@...ts.linbit.com, linux-cifs@...r.kernel.org,
rds-devel@....oracle.com, linux-rdma@...r.kernel.org,
cluster-devel@...hat.com, Alexey Kuznetsov <kuznet@....inr.ac.ru>,
linux-block@...r.kernel.org, ceph-devel@...r.kernel.org,
linux-nfs@...r.kernel.org, Neil Horman <nhorman@...driver.com>,
Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
netdev@...r.kernel.org, Vlad Yasevich <vyasevich@...il.com>,
linux-kernel@...r.kernel.org, Jon Maloy <jmaloy@...hat.com>,
Ying Xue <ying.xue@...driver.com>, ocfs2-devel@....oracle.com
Subject: Re: [PATCH 21/33] ipv4: add ip_sock_set_mtu_discover
On Wed, May 13, 2020 at 02:17:41PM +0100, David Howells wrote:
> Christoph Hellwig <hch@....de> wrote:
>
> > + ip_sock_set_mtu_discover(conn->params.local->socket->sk,
> > + IP_PMTUDISC_DONT);
>
> Um... The socket in question could be an AF_INET6 socket, not an AF_INET4
> socket - I presume it will work in that case. If so:
Yes, the implementation of that sockopt, including the inet_sock
structure where these options are set is shared between ipv4 and ipv6.
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