Re: [PATCH net v3 1/3] net: hsr: privatize interlink-bound skbs before address mutation

[Jakub Kicinski]

On Sat,  8 Aug 2026 02:45:22 +0200 Xin Xie wrote:
> +     if (port->type == HSR_PT_INTERLINK &&
> +         (frame->port_rcv->type == HSR_PT_MASTER ||
> +          (frame->is_local_dest && !frame->is_local_exclusive)) &&
> +         skb_cow(skb, 0)) {

Would skb_cow_head() be sufficient? It's much cheaper, at least for TCP.