From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 64543275AF0; Fri, 13 Feb 2026 20:34:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771014887; cv=none; b=K+74p/5ErKs8t3jLx3UGOWOJbAJa55mnUjzxM7ZDO4qQeHrYwXH78Jd+lEYZxmwe4j3Tm7SqT3KH4VaSUw4kxlhESflJUVD1EIAtGlqHd/nxTHkGAqKcotX1RT11cCQUYN5hCzG0AIHq0ofTe/Itmr6VrAd5i5d/Y3qFAFhlWX0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771014887; c=relaxed/simple; bh=XxUt9o01tkl2YeDC894gfSKrSV9JalAY+MmXygvGPhk=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=WnE3EgMBX6eDeMquIR35kb4+5N3pA1+M0m9RpraZNLcVrQY+tXCPCpjUuc53WKXPdrftEU5XuDmZfgTKegJ0v+sMvNbjTdGf/9pBHjbnCLM9OD3/0u4uLrB4S+c3W0KrZ2MJukyUtXp+KG+5Uo9gzKqFJJbYBaI22Q0jcQfvNck= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hDp60Yyh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hDp60Yyh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 13816C116C6; Fri, 13 Feb 2026 20:34:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771014887; bh=XxUt9o01tkl2YeDC894gfSKrSV9JalAY+MmXygvGPhk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=hDp60Yyho4yXiHjPDWqvFUJnMKAiJv7mwRpUKs0th2GCzeNB+Froz1yzy6qvMW7MR Fau2WLI+fY9sPaBEFU577fpBUmaZt3TjJWBWKloUV9JpEkQCxPt+RgCRzP/0X8byCs lzxfCwb6bpODUIUEXWbcP3isLC9l9yuvBc6EbJWmqOkEwf4Bqvp5lbEuHNCj4VxcXU QUNKJeQTF2nRqwHbO2777R+lSnwQsn4FBRGdnE7kVFQOAFKzfg4/l+FyQbHOYu/d9E /YdFBaoWReY6379kNQ03msQ3Hhdrw6hwdAu2GYoFe00CPDhnxuOEweL6qsXDXBt9QF 9vuP2MXDPvBUw== Date: Fri, 13 Feb 2026 12:34:44 -0800 From: Jakub Kicinski To: Larysa Zaremba Cc: bpf@vger.kernel.org, Claudiu Manoil , Vladimir Oltean , Wei Fang , Clark Wang , Andrew Lunn , "David S. Miller" , Eric Dumazet , Paolo Abeni , Tony Nguyen , Przemek Kitszel , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , KP Singh , Hao Luo , Jiri Olsa , Simon Horman , Shuah Khan , Alexander Lobakin , Maciej Fijalkowski , "Bastien Curutchet (eBPF Foundation)" , Tushar Vyavahare , Jason Xing , "Ricardo B. =?UTF-8?B?TWFybGnDqHJl?=" , Eelco Chaudron , Lorenzo Bianconi , Toke Hoiland-Jorgensen , imx@lists.linux.dev, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-kselftest@vger.kernel.org, Aleksandr Loktionov , Dragos Tatulea Subject: Re: [PATCH bpf v2 1/9] xdp: use modulo operation to calculate XDP frag tailroom Message-ID: <20260213123444.12fd433e@kernel.org> In-Reply-To: <20260212183328.1883148-3-larysa.zaremba@intel.com> References: <20260212183328.1883148-2-larysa.zaremba@intel.com> <20260212183328.1883148-3-larysa.zaremba@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Thu, 12 Feb 2026 19:33:16 +0100 Larysa Zaremba wrote: > - tailroom = rxq->frag_size - skb_frag_size(frag) - skb_frag_off(frag); > + tailroom = rxq->frag_size - skb_frag_size(frag) - > + skb_frag_off(frag) % rxq->frag_size; > if (unlikely(offset > tailroom)) Acked-by: Jakub Kicinski