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Date:   Tue, 27 Sep 2022 07:22:49 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Christian Langrock <christian.langrock@...unet.com>
Cc:     Steffen Klassert <steffen.klassert@...unet.com>,
        <herbert@...dor.apana.org.au>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <pabeni@...hat.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-ipsec v2] xfrm: replay: Fix ESN wrap around for GSO

On Tue, 27 Sep 2022 14:59:50 +0200 Christian Langrock wrote:
> When using GSO it can happen that the wrong seq_hi is used for the last
> packets before the wrap around. This can lead to double usage of a
> sequence number. To avoid this, we should serialize this last GSO
> packet.

Does not build but please wait for reviews before reposting:

net/xfrm/xfrm_replay.c:773:6: error: conflicting types for ‘xfrm_replay_overflow_check’; have ‘bool(struct xfrm_state *, struct sk_buff *)’ {aka ‘_Bool(struct xfrm_state *, struct sk_buff *)’}
  773 | bool xfrm_replay_overflow_check(struct xfrm_state *x, struct sk_buff *skb)
      |      ^~~~~~~~~~~~~~~~~~~~~~~~~~

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