From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) (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 F077E27FB18; Mon, 16 Mar 2026 17:46:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773683194; cv=none; b=TPnUKVm51uIpL2biS/JM3HidEC75FzI8SVh74Agh05Rlh+Yvkh4/6ev4wk8be2RE/iM0hcUcQ+iKNmJ+fPG0U2F3wDuFJPrBjUK9J372AIO2ffCieQD8Rol1GjxmsgGPiMZBXXHJFV9ArGmDXZdqlAPD6l0713mxLGDdosPSgls= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773683194; c=relaxed/simple; bh=HHt+7md6Fx6rdlb3tQPC+6q5XywRUOaIfdskyM4PRVw=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=InoxnIM0irCbWHczQ5L6RK8T7Rzy1aRtzpNz7ZReKR4DC5oHSHtmvrV/L4RHaHx1eiFWGVF8ilveXm6D8kDPN5wXZE7Gr0SvQApoJ/+puNDw+AJGI5LaOIYJ69f3NEYeH1omSj0Q06bWZXctj+7VQTaL9DMCbv3OmArxHUdhjnY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=bRdwMTty; arc=none smtp.client-ip=192.198.163.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="bRdwMTty" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1773683192; x=1805219192; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=HHt+7md6Fx6rdlb3tQPC+6q5XywRUOaIfdskyM4PRVw=; b=bRdwMTtyaCINPEt62qUDOsKdpaT2Rljn3FqU6vrp4GJTg046aZ6o7J0v gJQc5jCPQQO+7EGbQymuW9DWYtuKFBiiUpTDaLh0yAKbVF59Kze2BIxpc jNkCEMCIITcnoAVuynmfTH9Ck2flk7CW1uCHjsp5Vx/hK96m9bcKKgMLS 49WNKSDPROwDQ0G+wDrkk8kgjMhSTTM2uMi64RCHIUSueLuS3bepRpHh7 3Crc5BC/wFOJ3mhh/Jp4NtmdFi0W2oH+pbmlpyvv5U0nwHgD2UpFlj5Un HQvuE6JkJh5xdHjaFo9YKhUnwgwJXRQYMgEFqlIxOFG0hkrwvfqx+8ktB g==; X-CSE-ConnectionGUID: X43xwaevRSSIKVLOVudvGQ== X-CSE-MsgGUID: 5iqjol4RQSOp+FkrOc5TIA== X-IronPort-AV: E=McAfee;i="6800,10657,11731"; a="62275686" X-IronPort-AV: E=Sophos;i="6.23,124,1770624000"; d="scan'208";a="62275686" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Mar 2026 10:46:31 -0700 X-CSE-ConnectionGUID: cPkcxFLeQqaFq/X38Kre1A== X-CSE-MsgGUID: 7qBWk4UtR2uiAx6p4r1V0w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,124,1770624000"; d="scan'208";a="222075698" Received: from boxer.igk.intel.com ([10.102.20.173]) by orviesa008.jf.intel.com with ESMTP; 16 Mar 2026 10:46:28 -0700 From: Maciej Fijalkowski To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, magnus.karlsson@intel.com, stfomichev@gmail.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, larysa.zaremba@intel.com, aleksander.lobakin@intel.com, Maciej Fijalkowski Subject: [PATCH net 0/6] xsk: tailroom reservation and MTU validation Date: Mon, 16 Mar 2026 18:45:44 +0100 Message-Id: <20260316174550.462177-1-maciej.fijalkowski@intel.com> X-Mailer: git-send-email 2.38.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi, here we fix a long-standing issue regarding multi-buffer scenario in ZC mode - we have not been providing space at the end of the buffer where multi-buffer XDP works on skb_shared_info. This has been brought to our attention via [0]. Unaligned mode does not get any specific treatment, it is user's responsibility to properly handle XSK addresses in queues. With two adjustments included here in this set against xskxceiver I have been able to pass the full test suite on ice. Thanks, Maciej [0]: https://community.intel.com/t5/Ethernet-Products/X710-XDP-Packet-Corruption-Issue-DRV-MODE-Zero-Copy-Multi-Buffer/m-p/1724208 Maciej Fijalkowski (6): xsk: respect tailroom for ZC setups ice: do not round up result of dbuff calculation for xsk pool i40e: do not round up result of dbuff calculation for xsk pool xsk: validate MTU against usable frame size on bind selftests: bpf: fix pkt grow tests selftests: bpf: have a separate variable for drop test drivers/net/ethernet/intel/i40e/i40e_main.c | 8 ++++--- drivers/net/ethernet/intel/ice/ice_base.c | 10 +++++++-- include/net/xdp_sock_drv.h | 21 ++++++++++++++++++- net/xdp/xsk_buff_pool.c | 16 +++++++++++--- .../selftests/bpf/prog_tests/test_xsk.c | 21 ++++++++++++++++--- .../selftests/bpf/progs/xsk_xdp_progs.c | 3 ++- 6 files changed, 66 insertions(+), 13 deletions(-) -- 2.43.0