From: Simon Horman <horms@kernel.org>
To: Eric Dumazet <edumazet@google.com>
Cc: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, eric.dumazet@gmail.com
Subject: Re: [PATCH net-next 6/8] rtnetlink: do not depend on RTNL in rtnl_fill_proto_down()
Date: Sun, 5 May 2024 15:52:03 +0100 [thread overview]
Message-ID: <20240505145203.GE67882@kernel.org> (raw)
In-Reply-To: <20240503192059.3884225-7-edumazet@google.com>
On Fri, May 03, 2024 at 07:20:57PM +0000, Eric Dumazet wrote:
> Change dev_change_proto_down() and dev_change_proto_down_reason()
> to write once on dev->proto_down and dev->proto_down_reason.
>
> Then rtnl_fill_proto_down() can use READ_ONCE() annotations
> and run locklessly.
>
> rtnl_proto_down_size() should assume worst case,
> because readng dev->proto_down_reason multiple
> times would be racy without RTNL in the future.
>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
next prev parent reply other threads:[~2024-05-05 14:53 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-03 19:20 [PATCH net-next 0/8] rtnetlink: more rcu conversions for rtnl_fill_ifinfo() Eric Dumazet
2024-05-03 19:20 ` [PATCH net-next 1/8] rtnetlink: do not depend on RTNL for IFLA_QDISC output Eric Dumazet
2024-05-05 14:48 ` Simon Horman
2024-05-03 19:20 ` [PATCH net-next 2/8] rtnetlink: do not depend on RTNL for IFLA_IFNAME output Eric Dumazet
2024-05-05 14:49 ` Simon Horman
2024-05-03 19:20 ` [PATCH net-next 3/8] rtnetlink: do not depend on RTNL for IFLA_TXQLEN output Eric Dumazet
2024-05-05 14:43 ` Simon Horman
2024-05-07 9:26 ` Paolo Abeni
2024-05-07 9:35 ` Eric Dumazet
2024-05-07 16:32 ` Simon Horman
2024-05-03 19:20 ` [PATCH net-next 4/8] net: write once on dev->allmulti and dev->promiscuity Eric Dumazet
2024-05-05 14:54 ` Simon Horman
2024-05-03 19:20 ` [PATCH net-next 5/8] rtnetlink: do not depend on RTNL for many attributes Eric Dumazet
2024-05-05 14:46 ` Simon Horman
2024-05-05 15:00 ` Eric Dumazet
2024-05-05 15:06 ` Simon Horman
2024-05-05 15:14 ` Eric Dumazet
2024-05-07 16:38 ` Simon Horman
2024-05-07 16:39 ` Eric Dumazet
2024-05-07 16:55 ` Simon Horman
2024-05-03 19:20 ` [PATCH net-next 6/8] rtnetlink: do not depend on RTNL in rtnl_fill_proto_down() Eric Dumazet
2024-05-05 14:52 ` Simon Horman [this message]
2024-05-03 19:20 ` [PATCH net-next 7/8] rtnetlink: do not depend on RTNL in rtnl_xdp_prog_skb() Eric Dumazet
2024-05-05 14:53 ` Simon Horman
2024-05-03 19:20 ` [PATCH net-next 8/8] rtnetlink: allow rtnl_fill_link_netnsid() to run under RCU protection Eric Dumazet
2024-05-05 14:54 ` Simon Horman
2024-05-07 9:40 ` [PATCH net-next 0/8] rtnetlink: more rcu conversions for rtnl_fill_ifinfo() patchwork-bot+netdevbpf
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