From: Jakub Kicinski <kuba@kernel.org>
To: Jiri Pirko <jiri@resnulli.us>
Cc: netdev@vger.kernel.org, pabeni@redhat.com, davem@davemloft.net,
edumazet@google.com, jacob.e.keller@intel.com, jhs@mojatatu.com,
johannes@sipsolutions.net, andriy.shevchenko@linux.intel.com,
amritha.nambiar@intel.com, sdf@google.com, horms@kernel.org
Subject: Re: [patch net-next v3 5/9] genetlink: implement release callback and free sk_user_data there
Date: Mon, 20 Nov 2023 18:50:22 -0800 [thread overview]
Message-ID: <20231120185022.78f10188@kernel.org> (raw)
In-Reply-To: <20231120084657.458076-6-jiri@resnulli.us>
On Mon, 20 Nov 2023 09:46:53 +0100 Jiri Pirko wrote:
> If any generic netlink family would like to allocate data store the
> pointer to sk_user_data, there is no way to do cleanup in the family
> code.
How is this supposed to work?
genetlink sockets are not bound to a family. User can use a single
socket to subscribe to notifications from all families and presumably
each one of the would interpret sk->sk_user_data as their own state?
You need to store the state locally in the family, keyed
on pid, and free it using the NETLINK_URELEASE notifier...
next prev parent reply other threads:[~2023-11-21 2:50 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-20 8:46 [patch net-next v3 0/9] devlink: introduce notifications filtering Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 1/9] devlink: use devl_is_registered() helper instead xa_get_mark() Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 2/9] devlink: introduce __devl_is_registered() helper and use it instead of xa_get_mark() Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 3/9] devlink: send notifications only if there are listeners Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 4/9] devlink: introduce a helper for netlink multicast send Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 5/9] genetlink: implement release callback and free sk_user_data there Jiri Pirko
2023-11-21 2:50 ` Jakub Kicinski [this message]
2023-11-21 7:36 ` Jiri Pirko
2023-11-21 13:12 ` Jiri Pirko
2023-11-21 17:55 ` Jakub Kicinski
2023-11-22 9:29 ` Jiri Pirko
2023-11-22 17:08 ` Jakub Kicinski
2023-11-22 18:20 ` Jiri Pirko
2023-11-22 19:50 ` Jakub Kicinski
2023-11-23 6:37 ` Jiri Pirko
2023-11-23 10:32 ` Jiri Pirko
2023-11-23 16:24 ` Jakub Kicinski
2023-11-23 16:53 ` Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 6/9] netlink: introduce typedef for filter function Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 7/9] genetlink: introduce helpers to do filtered multicast Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 8/9] devlink: add a command to set notification filter and use it for multicasts Jiri Pirko
2023-11-21 2:51 ` Jakub Kicinski
2023-11-21 7:35 ` Jiri Pirko
2023-11-20 8:46 ` [patch net-next v3 9/9] devlink: extend multicast filtering by port index Jiri Pirko
2023-11-21 2:29 ` [patch net-next v3 0/9] devlink: introduce notifications filtering Jakub Kicinski
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