[PATCH net v2] calipso: keep BIG TCP payload_len in calipso_skbuff_setattr()

[patchwork-bot+netdevbpf at kernel.org]

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni at 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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