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Subject: Re: [PATCH net v2] calipso: keep BIG TCP payload_len in
 calipso_skbuff_setattr()
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <179206200502.3357824.14370454799792033360.git-patchwork-notify@kernel.org>
Date: Thu, 15 Oct 2026 11:00:05 +0000
References: <179156155963.36253.400481753322266658@gmail.com>
In-Reply-To: <179156155963.36253.400481753322266658@gmail.com>
To: Joas Antonio dos Santos <joasantonio108@gmail.com>
Cc: paul@paul-moore.com, edumazet@kernel.org, wang.zhan@smartx.com,
 davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org,
 netdev@vger.kernel.org, linux-security-module@vger.kernel.org,
 alice.kernel@fastmail.im

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Fri, 09 Oct 2026 12:59:19 -0300 you wrote:
> calipso_skbuff_setattr() adjusts payload_len by the length of the
> option it inserts or resizes:
> 
> 	payload = ntohs(ip6_hdr->payload_len);
> 	ip6_hdr->payload_len = htons(payload + len_delta);
> 
> GRO can build BIG TCP packets larger than IPV6_MAXPLEN, and stores
> payload_len == 0 for them; ipv6_payload_len() then falls back to
> skb->len.  For such a packet forwarded to a destination mapped to
> CALIPSO, the code above writes len_delta (or 65536 + len_delta when
> shrinking) into payload_len, and ipv6_payload_len() no longer falls
> back to skb->len.  nf_tables, conntrack and sch_cake rely on it.
> 
> [...]

Here is the summary with links:
  - [net,v2] calipso: keep BIG TCP payload_len in calipso_skbuff_setattr()
    https://git.kernel.org/netdev/net/c/8070ed578b6b

You are awesome, thank you!
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