From: Jakub Kicinski <kuba@kernel.org>
To: Larysa Zaremba <larysa.zaremba@intel.com>
Cc: bpf@vger.kernel.org, "Claudiu Manoil" <claudiu.manoil@nxp.com>,
"Vladimir Oltean" <vladimir.oltean@nxp.com>,
"Wei Fang" <wei.fang@nxp.com>,
"Clark Wang" <xiaoning.wang@nxp.com>,
"Andrew Lunn" <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Paolo Abeni" <pabeni@redhat.com>,
"Tony Nguyen" <anthony.l.nguyen@intel.com>,
"Przemek Kitszel" <przemyslaw.kitszel@intel.com>,
"Alexei Starovoitov" <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
"John Fastabend" <john.fastabend@gmail.com>,
"Stanislav Fomichev" <sdf@fomichev.me>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Martin KaFai Lau" <martin.lau@linux.dev>,
"Eduard Zingerman" <eddyz87@gmail.com>,
"Song Liu" <song@kernel.org>,
"Yonghong Song" <yonghong.song@linux.dev>,
"KP Singh" <kpsingh@kernel.org>, "Hao Luo" <haoluo@google.com>,
"Jiri Olsa" <jolsa@kernel.org>, "Simon Horman" <horms@kernel.org>,
"Shuah Khan" <shuah@kernel.org>,
"Alexander Lobakin" <aleksander.lobakin@intel.com>,
"Maciej Fijalkowski" <maciej.fijalkowski@intel.com>,
"Bastien Curutchet (eBPF Foundation)"
<bastien.curutchet@bootlin.com>,
"Tushar Vyavahare" <tushar.vyavahare@intel.com>,
"Jason Xing" <kernelxing@tencent.com>,
"Ricardo B. Marlière" <rbm@suse.com>,
"Eelco Chaudron" <echaudro@redhat.com>,
"Lorenzo Bianconi" <lorenzo@kernel.org>,
"Toke Hoiland-Jorgensen" <toke@redhat.com>,
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" <aleksandr.loktionov@intel.com>,
"Dragos Tatulea" <dtatulea@nvidia.com>
Subject: Re: [PATCH bpf v2 1/9] xdp: use modulo operation to calculate XDP frag tailroom
Date: Fri, 13 Feb 2026 12:34:44 -0800 [thread overview]
Message-ID: <20260213123444.12fd433e@kernel.org> (raw)
In-Reply-To: <20260212183328.1883148-3-larysa.zaremba@intel.com>
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 <kuba@kernel.org>
next prev parent reply other threads:[~2026-02-13 20:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-12 18:33 [PATCH bpf v2 0/9] Address XDP frags having negative tailroom Larysa Zaremba
2026-02-12 18:33 ` [PATCH bpf v2 1/9] xdp: use modulo operation to calculate XDP frag tailroom Larysa Zaremba
2026-02-13 20:34 ` Jakub Kicinski [this message]
2026-02-12 18:33 ` [PATCH bpf v2 2/9] xsk: introduce helper to determine rxq->frag_size Larysa Zaremba
2026-02-12 18:33 ` [PATCH bpf v2 3/9] ice: fix rxq info registering in mbuf packets Larysa Zaremba
2026-02-12 19:31 ` bot+bpf-ci
2026-02-12 18:33 ` [PATCH bpf v2 4/9] ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz Larysa Zaremba
2026-02-13 3:57 ` Loktionov, Aleksandr
2026-02-13 8:41 ` Larysa Zaremba
2026-02-12 18:33 ` [PATCH bpf v2 5/9] i40e: fix registering XDP RxQ info Larysa Zaremba
2026-02-12 18:33 ` [PATCH bpf v2 6/9] i40e: use xdp.frame_sz as XDP RxQ info frag_size Larysa Zaremba
2026-02-13 4:04 ` Loktionov, Aleksandr
2026-02-13 8:58 ` Larysa Zaremba
2026-02-12 18:33 ` [PATCH bpf v2 7/9] idpf: use truesize " Larysa Zaremba
2026-02-16 10:46 ` Alexander Lobakin
2026-02-16 10:48 ` Alexander Lobakin
2026-02-16 14:01 ` Larysa Zaremba
2026-02-16 15:17 ` Alexander Lobakin
2026-02-12 18:33 ` [PATCH bpf v2 8/9] net: enetc: " Larysa Zaremba
2026-02-12 18:33 ` [PATCH bpf v2 9/9] xdp: produce a warning when calculated tailroom is negative Larysa Zaremba
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