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From: Paolo Abeni <pabeni@redhat.com>
To: atwellwea@gmail.com, netdev@vger.kernel.org, davem@davemloft.net,
	kuba@kernel.org, edumazet@google.com, ncardwell@google.com
Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org,
	linux-trace-kernel@vger.kernel.org, mptcp@lists.linux.dev,
	dsahern@kernel.org, horms@kernel.org, kuniyu@google.com,
	andrew+netdev@lunn.ch, willemdebruijn.kernel@gmail.com,
	jasowang@redhat.com, skhan@linuxfoundation.org, corbet@lwn.net,
	matttbe@kernel.org, martineau@kernel.org, geliang@kernel.org,
	rostedt@goodmis.org, mhiramat@kernel.org,
	mathieu.desnoyers@efficios.com, 0x7f454c46@gmail.com
Subject: Re: [PATCH net-next v2 07/14] tcp: honor the maximum advertised window after live retraction
Date: Mon, 16 Mar 2026 12:44:20 +0100	[thread overview]
Message-ID: <dddab568-a7dc-472c-8799-095ab96cef0c@redhat.com> (raw)
In-Reply-To: <20260314201348.1786972-8-atwellwea@gmail.com>

On 3/14/26 9:13 PM, atwellwea@gmail.com wrote:
> +/* Sender-visible window rescue does not relax hard receive-memory admission.
> + * If growth did not make room, fall back to the established prune/collapse
> + * path.
> + */
>  static int tcp_try_rmem_schedule(struct sock *sk, const struct sk_buff *skb,
>  				 unsigned int size)
>  {
> -	if (!tcp_can_ingest(sk, skb) ||
> -	    !sk_rmem_schedule(sk, skb, size)) {
> +	bool can_ingest = tcp_can_ingest(sk, skb);
> +	bool scheduled = can_ingest && sk_rmem_schedule(sk, skb, size);
> +
> +	if (!scheduled) {
> +		int pruned = tcp_prune_queue(sk, skb);
>  
> -		if (tcp_prune_queue(sk, skb) < 0)
> +		if (pruned < 0)
>  			return -1;
>  
>  		while (!sk_rmem_schedule(sk, skb, size)) {
> -			if (!tcp_prune_ofo_queue(sk, skb))
> +			bool pruned_ofo = tcp_prune_ofo_queue(sk, skb);
> +
> +			if (!pruned_ofo)
>  				return -1;
>  		}
>  	}

The above chunk is AFAICS pure noise. Please have a more careful local
review of this series before any next revision.

/P


  reply	other threads:[~2026-03-16 11:44 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-14 20:13 [PATCH net-next v2 00/14] tcp: preserve receive-window accounting across ratio drift atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 01/14] tcp: factor receive-memory accounting helpers atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 02/14] tcp: snapshot advertise-time scaling for rcv_wnd atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 03/14] tcp: refresh rcv_wnd snapshots at TCP write sites atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 04/14] tcp: snapshot the maximum advertised receive window atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 05/14] tcp: grow rcvbuf to back scaled-window quantization slack atwellwea
2026-03-16 11:04   ` Paolo Abeni
2026-03-16 11:24   ` Paolo Abeni
2026-03-16 11:31   ` Paolo Abeni
2026-03-14 20:13 ` [PATCH net-next v2 06/14] tcp: regrow rcvbuf when scaling_ratio drops after advertisement atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 07/14] tcp: honor the maximum advertised window after live retraction atwellwea
2026-03-16 11:44   ` Paolo Abeni [this message]
2026-03-14 20:13 ` [PATCH net-next v2 08/14] tcp: extend TCP_REPAIR_WINDOW for live and max-window snapshots atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 09/14] mptcp: refresh TCP receive-window snapshots on subflows atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 10/14] tcp: expose rmem and backlog in tcp and mptcp rcvbuf_grow tracepoints atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 11/14] selftests: tcp_ao: cover legacy, v1, and retracted repair windows atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 12/14] tun/selftests: add RX truesize injection for TCP window tests atwellwea
2026-03-15  1:18   ` Jakub Kicinski
2026-03-14 20:13 ` [PATCH net-next v2 13/14] netdevsim: add peer RX truesize support for selftests atwellwea
2026-03-15  1:18   ` Jakub Kicinski
2026-03-14 20:13 ` [PATCH net-next v2 14/14] netdevsim: release pinned PSP ext on drop paths atwellwea
2026-03-15  1:19 ` [PATCH net-next v2 00/14] tcp: preserve receive-window accounting across ratio drift Jakub Kicinski
2026-03-16 11:09 ` Paolo Abeni
     [not found]   ` <CAN=sVvyNpkyok_bt8eQSmqc4f7g7QoZBUmRmNRLoFz1HasEzMA@mail.gmail.com>
2026-03-16 17:47     ` Paolo Abeni
2026-03-16 18:03       ` Wesley Atwell

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