From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 3E59A3D410E; Wed, 15 Jul 2026 21:41:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784151665; cv=none; b=HdsMRgqZIMJlTZBZMaoTP53JRFTGjYPIU10gOjgqNrWleNf6omqaS+6bZJ3uoGQpAtD17eupd6uRAnfxyu9fw0xBGi9QDbevSNbO5QEKoxmlMCGRrg9yfHOMxWFcsn20UmALokbX3G8ZYydRjPDWfFkiiV8qVtDXI4YGi6iE6Y0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784151665; c=relaxed/simple; bh=z1lpGviGpZHzgBk6ri8KIVK44s2Ex7iuOAMlcaSOMVU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=NdsIbidCqSKUXFVhJdiTmy3u4u1NrIxYGvFxGAyaSNwJZvmDy6eOmmBSzjJwuQvcCxVOtX3kbUQku+SekzwDc4apvWCwvUMyiX/mlGvoXEFC7xtJhLFj2x1k5+5Na/XOfvpQzYlKO9eBZu5YYjNkyPVHOT0Tp1CwReJYWAJoExw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BrDl9Foy; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BrDl9Foy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C1261F000E9; Wed, 15 Jul 2026 21:41:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784151664; bh=ObIB2B5UEajWK2xeFWUSwolrym3joUTihyi6yd8zpJ8=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=BrDl9FoyE8sDxN3ES/mKWwn4mioM2GN1BOLigXI18U+ZjnZFhqwDo+8YO84P89p4q OezPGoW1hswJ9qzxvJwCg2k9bepQFRbLarBrdtZDE38TOFGpKzk3NR2LbjGG217vQY 1YQkp442WscZ2dnOTTQpv5XoLZPZ1xPSDLDylZ3t+r1VNijiyvXxCFE9+Q2sgmVgWj bJeVi2/qHS42QDznnOx6q/GtG9jzu4fBHwuM0z3xsaOiXmL++G8iSyYSQrrzc2JsqX 7/5PnPoLIDDJkAasB0o6QTrdvdduV5Sycffxec+S6w015+zkxWNyYNLxTZr815k/VF jd31xL0NRNh4g== From: Lorenzo Bianconi Date: Wed, 15 Jul 2026 23:39:42 +0200 Subject: [PATCH bpf-next v5 2/8] net: veth: add xmo_rx_checksum callback to veth driver Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260715-bpf-xdp-meta-rxcksum-v5-2-623d5c0d0ab7@kernel.org> References: <20260715-bpf-xdp-meta-rxcksum-v5-0-623d5c0d0ab7@kernel.org> In-Reply-To: <20260715-bpf-xdp-meta-rxcksum-v5-0-623d5c0d0ab7@kernel.org> To: Donald Hunter , Jakub Kicinski , "David S. Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Andrew Lunn , Tony Nguyen , Przemek Kitszel , Alexander Lobakin , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , KP Singh , Hao Luo , Jiri Olsa , Shuah Khan , Maciej Fijalkowski , Jonathan Corbet , Shuah Khan , Kumar Kartikeya Dwivedi , Emil Tsalapatis Cc: Vladimir Vdovin , Jakub Sitnicki , netdev@vger.kernel.org, bpf@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-kselftest@vger.kernel.org, linux-doc@vger.kernel.org, Aleksandr Loktionov , Lorenzo Bianconi X-Mailer: b4 0.14.3 Implement xmo_rx_checksum callback in veth driver to report RX checksum result to the eBPF program bounded to the veth device. Reviewed-by: Aleksandr Loktionov Signed-off-by: Lorenzo Bianconi --- drivers/net/veth.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 8170bf33ccf9..dbf30089581c 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -1701,6 +1701,37 @@ static int veth_xdp_rx_vlan_tag(const struct xdp_md *ctx, __be16 *vlan_proto, return err; } +static int veth_xdp_rx_checksum(const struct xdp_md *ctx, + enum xdp_checksum *ip_summed, + u32 *cksum, u8 *cksum_level) +{ + const struct veth_xdp_buff *_ctx = (void *)ctx; + const struct sk_buff *skb = _ctx->skb; + + if (!skb) + return -ENODATA; + + switch (skb->ip_summed) { + case CHECKSUM_COMPLETE: + *ip_summed = XDP_CHECKSUM_COMPLETE; + *cksum = skb->csum; + *cksum_level = 0; + break; + case CHECKSUM_UNNECESSARY: + *ip_summed = XDP_CHECKSUM_UNNECESSARY; + *cksum_level = skb->csum_level; + *cksum = 0; + break; + default: + *ip_summed = XDP_CHECKSUM_NONE; + *cksum_level = 0; + *cksum = 0; + break; + } + + return 0; +} + static const struct net_device_ops veth_netdev_ops = { .ndo_init = veth_dev_init, .ndo_open = veth_open, @@ -1726,6 +1757,7 @@ static const struct xdp_metadata_ops veth_xdp_metadata_ops = { .xmo_rx_timestamp = veth_xdp_rx_timestamp, .xmo_rx_hash = veth_xdp_rx_hash, .xmo_rx_vlan_tag = veth_xdp_rx_vlan_tag, + .xmo_rx_checksum = veth_xdp_rx_checksum, }; #define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HW_CSUM | \ -- 2.55.0