Re: [PATCH net v2] fou: reject omitted FOU_ATTR_IPPROTO on FOU_ENCAP_DIRECT

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Mon, 21 Sep 2026 04:59:20 +0000 you wrote:
> Commit 7a9bc9e3f423 ("fou: Don't allow 0 for FOU_ATTR_IPPROTO.") added
> NLA_POLICY_MIN(NLA_U8, 1) to fou_nl_policy[FOU_ATTR_IPPROTO], which
> rejects an explicitly supplied FOU_ATTR_IPPROTO == 0 attribute with
> -ERANGE.
> 
> However, FOU_ATTR_IPPROTO is an optional netlink attribute. When a user
> sends FOU_CMD_ADD with FOU_ATTR_TYPE set to FOU_ENCAP_DIRECT and omits
> FOU_ATTR_IPPROTO entirely, nla_policy validation succeeds and
> parse_nl_config() leaves cfg->protocol as 0 (from memset(cfg, 0,
> sizeof(*cfg))). fou_create() then creates a FOU_ENCAP_DIRECT socket with
> fou->protocol == 0.
> 
> [...]

Here is the summary with links:
  - [net,v2] fou: reject omitted FOU_ATTR_IPPROTO on FOU_ENCAP_DIRECT
    https://git.kernel.org/netdev/net/c/d22609f3d13f

You are awesome, thank you!
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