netdev - Re: [PATCH net v2 0/8] amt: fix validation and synchronization bugs

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Date:   Tue, 19 Jul 2022 10:50:15 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Taehee Yoo <ap420073@...il.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, netdev@...r.kernel.org
Subject: Re: [PATCH net v2 0/8] amt: fix validation and synchronization bugs

Hello:

This series was applied to netdev/net.git (master)
by Paolo Abeni <pabeni@...hat.com>:

On Sun, 17 Jul 2022 16:09:02 +0000 you wrote:
> There are some synchronization issues in the amt module.
> Especially, an amt gateway doesn't well synchronize its own variables
> and status(amt->status).
> It tries to use a workqueue for handles in a single thread.
> A global lock is also good, but it would occur complex locking complex.
> 
> In this patchset, only the gateway uses workqueue.
> The reason why only gateway interface uses workqueue is that gateway
> should manage its own states and variables a little bit statefully.
> But relay doesn't need to manage tunnels statefully, stateless is okay.
> So, relay side message handlers are okay to be called concurrently.
> But it doesn't mean that no lock is needed.
> 
> [...]

Here is the summary with links:
  - [net,v2,1/8] amt: use workqueue for gateway side message handling
    https://git.kernel.org/netdev/net/c/30e22a6ebca0
  - [net,v2,2/8] amt: remove unnecessary locks
    https://git.kernel.org/netdev/net/c/9c343ea6185f
  - [net,v2,3/8] amt: use READ_ONCE() in amt module
    https://git.kernel.org/netdev/net/c/928f353cb867
  - [net,v2,4/8] amt: add missing regeneration nonce logic in request logic
    https://git.kernel.org/netdev/net/c/627f16931bf3
  - [net,v2,5/8] amt: drop unexpected advertisement message
    https://git.kernel.org/netdev/net/c/40185f359fba
  - [net,v2,6/8] amt: drop unexpected query message
    https://git.kernel.org/netdev/net/c/239d886601e3
  - [net,v2,7/8] amt: drop unexpected multicast data
    https://git.kernel.org/netdev/net/c/e882827d5b89
  - [net,v2,8/8] amt: do not use amt->nr_tunnels outside of lock
    https://git.kernel.org/netdev/net/c/989918482bbc

You are awesome, thank you!
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