From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6A836CA6019 for ; Fri, 9 Oct 2026 10:27:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=ITMqI/Icq3NL235r6C2iwfF98d1/ZYkDkbAz5O1+M6E=; b=qTH+eSVhxFMsz9 kAerVEnB1sjyyo0Jg8Ysdyevh3nk6Frdd696V+MMIIMZ3VwfUOk9ESvGj7fhyuUlWLaz/Su3eiWhJ /nzzn17Px/NSA0HtBT2vWxe/elQRLnXOogyQsXPD2u0Xh0DzZoe7O0Pv6WEfrWhA07VWfo4OiaaQp k3In5nvF8s6zwWSbgiKb1Jlxor6yJ6t6muAuVoVJ1K4e+z825Xp6n7Sljry96n2Dd6/7ENvoKFeJx 5WgNoIH8t0zgSjxlkWMfhWu8is4Fg/E03qN+wHjryYqFvhdktvfB8Zc+DAU2fdozMP2oFqOXWN4IJ PP5TemieMLtMdAEmIBSQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xF7oS-000000063M8-0Y6Z; Fri, 09 Oct 2026 10:26:52 +0000 Received: from mx0a-0031df01.pphosted.com ([205.220.168.131]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xF7oP-000000063LW-2DEu for linux-arm-kernel@lists.infradead.org; Fri, 09 Oct 2026 10:26:50 +0000 Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6998KIWg404357 for ; Fri, 9 Oct 2026 10:26:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=qcppdkim1; bh=ITMqI/Icq3NL235r6C2iwf F98d1/ZYkDkbAz5O1+M6E=; b=CoxNYTEv0X5h52BdwG1KUM+YOGdQe7QB5H1163 AovaUeEZsAsU1gDC806gTK2aVuQzYfaPQOwdDBa0246C6aY/+obvnzJPGvJLrsKx YE1KN2YPm/A4/Ky64gqNFmlC+JIiW6CBTj9naSEn0/1vwRfd894KQN4UE4IJg+w2 H7XqFUHhFtHXI1KIsO2ZXNfBG1phtGJr9ivwN2rrZ2kR+e1CXmoVN6A4TpW6tI4S H/Ui0ELYFCpb8+TKzSJZlYql5dhT7YfnBvOqECND+4vfkkxAhVzbNHbxMkulw+N1 t94Aul8zA6myTNI5AeQCbXWNyJwyvRWaKNx8hnpSR+OiXGAg== Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4h6fxk34r6-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Fri, 09 Oct 2026 10:26:48 +0000 (GMT) Received: by mail-qk1-f198.google.com with SMTP id af79cd13be357-93a3f673221so1706503185a.0 for ; Fri, 09 Oct 2026 03:26:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1791541608; x=1792146408; darn=lists.infradead.org; h=cc:to:content-transfer-encoding:content-type:mime-version :message-id:date:subject:from:from:to:cc:subject:date:message-id :reply-to:content-type; bh=ITMqI/Icq3NL235r6C2iwfF98d1/ZYkDkbAz5O1+M6E=; b=QV3TdGCaX2vsmwVqbxnz3FL2C76I0MYOrCpmy0php1aolizLsuJ4V4tUnGHitbE66/ J7pGR6WDmkk2IQyD6pk6dJlJDSioihPuePuz4qJmu8+xR/e3z/y7siPKgTHs9H9cHe5p U1BOGZbKHvFcCtKawEE4xOwFL4WalNwGK2by4W0dBfpXC55YSckanQpRYn3EqFvtvCfz 7zj7IEZao2JS1kQl22F8vCpbsuzqvzQ7i7ks+qCtKoac49JzBp/D8hnLfHfjURGXoemq dTKPyEyJYGw65kMBFADm3p0KdlcX2b8ENeJtJwfvAYL0Vift04/8EmUgODrTgxL4ofNb dh4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791541608; x=1792146408; h=cc:to:content-transfer-encoding:content-type:mime-version :message-id:date:subject:from:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to:content-type; bh=ITMqI/Icq3NL235r6C2iwfF98d1/ZYkDkbAz5O1+M6E=; b=ON0ttzZ+KhAfdi3hKgm6PSPN6foFQathpXblsRFmQxox5bVRkCkg1TYZBtHWZCzTY0 oKXoGNnk06aE2z/oHisTbfcqgTs0m12DZKw2gCiDXjY7Sy2+qYndee6ep4pYYI8qnJMh uB+5z39jqCmnkSpYDYV+8Hqmt62foZxZ27ISbK/R14UW2FLJzZRBuBGOc4gD4+2eWcVC g6sx4Fkfkwm71HugwN/DNlJ1MDIi+GP59nqKOA6o9UHY52/8dnnOuPqEDY7bsFARUv7Z NwO0+Cjs5uH1L9kuR2BLPG4A+iLeagUfr88J2rdiZh4zLqGFCARh2z/2O1wV+muo7yjq xyqA== X-Forwarded-Encrypted: i=1; AKwUvByurXKNRp/5QV1G6JfPsRLGfWco/2mUKFC/84ev7zECUrf3y/YL+X2sMqyMl+p8aUU2CgO6kc/yT0+jRG41PCxR@lists.infradead.org X-Gm-Message-State: AFuF++nPOiPt/RB/zFeNcANRwQaIDZ23U7PVSHus+/JDj5lcBGg1So5f KbGTVFP+sxFibmyxQpc2XZQjbK6Yz/+Xg4ZLnNCbTh7Kte69Q153pHfvIj4zFWzCDOaGfmHMq4g izP+Pjc9ovMSyLNqeeWRDThgZl+gAoGwWqrM5dEzDAIkPwkYuE2I05C7FYGgg0abe7e3sLw4EKp qDPg== X-Gm-Gg: AYBFou1jgBoVXKswb6ybJC7YtjWD25TIZXnkqzlLwYkHVXYUJ/9upoA937J2CF/TZGy jdeAW2Ig6DRRHGMxj9vPECMY18NXzgr+lAfLal1QP2ECJdx67A2KFf5LM7XyrznS7b/qLYb6+3C TDeEDrdxfJSY+3iWtzbu5fYx/VA6SxOkwIefG5xMDnXFoUAXxskxWF7l125CLVY3HvvB3RklaRh jqDTLPC6DH2+S06Fd4RNMgza6ih7vWVVlG6P0EtKJ5AI8JXf+j7plsQ/eMfvMHbcert8X1Z1IYE MHAaZWHwbeNPwtjKLhfxtvRibz2Hvxr9E3W+cFtYp1+45TF+LXuW4ifFozQR76RHAGdl1Qkeusg r3M5UHC+lor3g9w== X-Received: by 2002:a05:620a:1d01:b0:93e:8542:4f4d with SMTP id af79cd13be357-93ebd2923c0mr184144285a.57.1791541607700; Fri, 09 Oct 2026 03:26:47 -0700 (PDT) X-Received: by 2002:a05:620a:1d01:b0:93e:8542:4f4d with SMTP id af79cd13be357-93ebd2923c0mr184141185a.57.1791541607135; Fri, 09 Oct 2026 03:26:47 -0700 (PDT) Received: from localhost ([188.216.77.92]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a18c1e33d2sm66345435e9.0.2026.10.09.03.26.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Oct 2026 03:26:46 -0700 (PDT) From: Lorenzo Bianconi Subject: [PATCH net-next v5 0/3] net: stmmac: introduce XDP rx multi-buff support Date: Fri, 09 Oct 2026 12:26:30 +0200 Message-Id: <20261009-stmmac-rx-mb-v5-0-c38fa4eaa138@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/3XNQWrDMBAF0KsErTNBI4/luKveo3QxkUeJILJTy TUuwXev8CIEk2wGPp//5q6ypCBZfezuKskUchj6Eur9TrkL92eB0JWsjDZWt3iEPMbIDtIM8QR oybZsGiRhVSa3JD7MK/elehmhl3lU36W5hDwO6W/9M+HavyYnBAR9ohqbjjSx/xxyPvz88tUNM R7KWb3JPBkGN4YphpWjsYLeV9q+MaqHgVrTxqhAQ609Y4PsW3FvDHo27MagYohnctw2JFX3wli W5R+Va9/XhQEAAA== X-Change-ID: 20260918-stmmac-rx-mb-16469a2714ea To: Maxime Chevallier , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Alexandre Torgue , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Jose Abreu , Ong Boon Leong Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, bpf@vger.kernel.org, James Hilliard , Lorenzo Bianconi X-Mailer: b4 0.14.3 X-Authority-Analysis: v=2.4 cv=fKesTpae c=1 sm=1 tr=0 ts=6ac8c168 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=WpTaRW6qxYHRGzLzQsVYzg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=e9kd2x7fyNmJAygvsboA:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-GUID: O0f18Yhjck-W5zRT07xp3JAZG6jc_zxn X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA5MDA0MSBTYWx0ZWRfX4Wnh8GSdmuC2 t0oWMcohWV4PMYqRS8s3/GZBorCv5H1SBcDj265SXThx2xL9meZkwaRvybpzqqLI6l/Lp26E/f1 fqg48KZpCTmb1ZRRKZ8Fpzny2TV/sEU= X-Proofpoint-ORIG-GUID: O0f18Yhjck-W5zRT07xp3JAZG6jc_zxn X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA5MDA0MSBTYWx0ZWRfX87h0pUH0qrto zuCdB2qvkQLDF/obZHymBY8IzZ4gMjhI3QgHejbZ3JyAVESwRuM+/YP0ojoad+yo7XR1ZP2vH0h 5tt8UfqqLXAFToJwvq6LwJUZhPbYqkL5IYV9bRDoMl1s6Vw4HrK/mdiw1oAt9SZ+GppNrHa87bl QbF8yTJjhkU3tM3WTOsb8xc1Q38RwENQVlSU3c1rR1a6mp2sTLwizc6A3jpkaEw3MfR2kFjWb8C F4wz53pwDCqtX3hj1KnbPF0+X1TfAUPN6EJUDuwZU9SmGk7LWQ/4hE8uYbpJcL1ijSM5L79KcVJ OSdtB2dOzRiwXd0xktAC6wam9y9K/wBbgaoXpZSOn97iXUNQKY5SjDw2vIYtCc2CUQWVT/8H9FB PYSYqx2cj9ZuwZBCr5CMl7BoCdHwZ0fVNDiN1KXz27mpIgnovWQcx7Hp0e9QeSIkf/0VZuQsga8 ktCNKey+OR8cdLYw/7A== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-09_03,2026-10-08_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 malwarescore=0 clxscore=1015 suspectscore=0 adultscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 lowpriorityscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610020000 definitions=main-2610090041 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261009_032649_595226_5E58C9FF X-CRM114-Status: GOOD ( 14.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Rework stmmac_rx() to build the xdp_buff from all the descriptors that make up a frame, so the XDP program runs on the whole (possibly fragmented) packet instead of the first buffer only. Fix possible rx_q state leaks when closing/opening the interface. Enable XDP support with MTU bigger than ETH_DATA_LEN. --- Changes in v5: - Fix possible read after bound issue in patch 1/3. - Do not allow parsing non-linear XDP buffers if the program loaded does not support frags. - Add patch 3/3 to remove MTU constraint for XDP prog. - Link to v4: https://lore.kernel.org/r/20261006-stmmac-rx-mb-v4-0-efa4ca974e3d@oss.qualcomm.com Changes in v4: - Reset in_progress flag when the packet is fully consumed. - Advetise NETDEV_XDP_ACT_RX_SG capability. - Link to v3: https://lore.kernel.org/r/20261004-stmmac-rx-mb-v3-0-50fa171af9ec@oss.qualcomm.com Changes in v3: - Return secondary page in case of error. - Introduce stmmac_xdp_shrink_tail() to remove the ethernet FCS. - Add patch 'net: stmmac: take ownership of saved RX state at poll entry' from James. - Link to v2: https://lore.kernel.org/r/20260921-stmmac-rx-mb-v2-1-6e826e1ff306@oss.qualcomm.com Changes in v2: - Rely on xdp_buff_add_frag() to create xdp fragments - Fix bugs in rx_q state recording - Fix the corner case where we receive more than MAX_SKB_FRAGS fragments - Cosmetics - Link to v1: https://lore.kernel.org/r/20260918-stmmac-rx-mb-v1-1-0b4517d404af@oss.qualcomm.com --- James Hilliard (1): net: stmmac: take ownership of saved RX state at poll entry Lorenzo Bianconi (2): net: stmmac: rework stmmac_rx to support XDP rx multi-buff net: stmmac: allow non-linear xdp_buff in XDP mode drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 +- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 401 ++++++++++++++-------- drivers/net/ethernet/stmicro/stmmac/stmmac_xdp.c | 8 - 3 files changed, 253 insertions(+), 159 deletions(-) --- base-commit: d8674294aefef02266c4d47ad10131f1bffbe534 change-id: 20260918-stmmac-rx-mb-16469a2714ea Best regards, -- Lorenzo Bianconi