linux-kernel - Re: [PATCH net-next v24 08/13] net: add support for skbs with unreadable frags

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Message-ID: <20240903144011.3e7135f9@kernel.org>
Date: Tue, 3 Sep 2024 14:40:11 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Mina Almasry <almasrymina@...gle.com>
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Subject: Re: [PATCH net-next v24 08/13] net: add support for skbs with
 unreadable frags

On Sat, 31 Aug 2024 00:43:08 +0000 Mina Almasry wrote:
>  static inline bool tcp_skb_can_collapse_to(const struct sk_buff *skb)
>  {
> -	return likely(!TCP_SKB_CB(skb)->eor);
> +	return likely(!TCP_SKB_CB(skb)->eor && skb_frags_readable(skb));

Do you remember why this is here? Both for Rx and Tx what should matter
is whether the "readability" matches, right? We can merge two unreadable
messages.