From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (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 847F72D063E; Tue, 1 Sep 2026 21:18:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788297490; cv=none; b=Lp/jl1KUCVN+qz9YGHlHEV1wmlgE7vGHprKz83UTWQcneARvfgBQKK1h09yrfCpbPTAFJz+FgsGpNY8VQyoAFf8OXpRrZGJtU5AN9Cleh5EeogXBPDO6GqPyTHVhRhPPH+s1ZjGjjujADJNs6C7j5R4RI3BN8GjDLdryc+And2k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788297490; c=relaxed/simple; bh=+dANJpsQx5HL34vpMlzYVNbwhlqabJCBaNqb2C53gIc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Fm7FjDGCPerNV23agGae7hIVR3c/s/iA7k0FJfa5HW0kXkOrgs7tuyRWq0S6xeBbim9MqepIuGPAwIP8SH35CSIFgU25kb4gH2mSFEVp5Ci1KE+rP+lm/v9B7WwgHm5I39H04DtMgGLfZHswjVVogPwi/SLbgrxp0e5jbIhv2BA= 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=lk46vknL; arc=none smtp.client-ip=198.175.65.19 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="lk46vknL" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788297489; x=1819833489; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+dANJpsQx5HL34vpMlzYVNbwhlqabJCBaNqb2C53gIc=; b=lk46vknL+3LI77+f8c/EMJDEmm39p4gNsUo7zfuppqDL1Eg3CDRLEwZ2 fm0N5Xl6GzBt6TPMRRrf0JbraLyLSEfEPtHLku6NoYnBt4niz5Fzq+xj9 kT26ikcHw8rjJ5FUaH06a6aOFLeH1O4DqOahOpiemsanZqBAQFZ6MCx4x SgySIqG+IX1tACibRzrBIs53t02ZFmoOfrphWc+kpK+VjhiAoeupUB1Kc P+YOnLPO44klGqs5if5wKnLTzRsvS0jBWvRrDAUXk8W6BlyV3oBfUB2bf Y1+3+QSoqVS4kBCGcTxv7Qkkd7kS8HZjUDqCvSl8GSosTY+BjvKXma4Om A==; X-CSE-ConnectionGUID: 27GyzqpKSIexVlJzDlvuug== X-CSE-MsgGUID: pXvaFTvlSDyScrBinSHEbQ== X-IronPort-AV: E=McAfee;i="6800,10657,11893"; a="88670360" X-IronPort-AV: E=Sophos;i="6.25,256,1779174000"; d="scan'208";a="88670360" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Sep 2026 14:18:06 -0700 X-CSE-ConnectionGUID: 8IPnFd1DRHmiI7YeX+FPSw== X-CSE-MsgGUID: HgRDq/0JS/O/Ozl3yXXPtg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,256,1779174000"; d="scan'208";a="267439753" Received: from anguy11-upstream.jf.intel.com ([10.166.9.133]) by orviesa006.jf.intel.com with ESMTP; 01 Sep 2026 14:18:05 -0700 From: Tony Nguyen To: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, andrew+netdev@lunn.ch, netdev@vger.kernel.org Cc: Kohei Enju , anthony.l.nguyen@intel.com, kohei.enju@gmail.com, enjuk@amazon.com, chris.packham@alliedtelesis.co.nz, przemyslaw.kitszel@intel.com, blair.steven@alliedtelesis.co.nz, carl.smith@alliedtelesis.co.nz, horms@kernel.org, maciej.fijalkowski@intel.com, magnus.karlsson@intel.com, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, sdf@fomichev.me, bpf@vger.kernel.org, Aleksandr Loktionov , Patryk Holda Subject: [PATCH net-next 2/4] i40e: add support for bpf_xdp_metadata_rx_hash() Date: Tue, 1 Sep 2026 14:17:48 -0700 Message-ID: <20260901211752.1922993-3-anthony.l.nguyen@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20260901211752.1922993-1-anthony.l.nguyen@intel.com> References: <20260901211752.1922993-1-anthony.l.nguyen@intel.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Kohei Enju Introduce i40e_xdp_rx_hash() which takes the same approach as i40e_rx_hash() to extract the hash from RX descriptors. Tested with X710 adapter using xdp_hw_metadata, and verified hash consistency between bpf_xdp_metadata_rx_hash() and skb->hash. Signed-off-by: Kohei Enju Reviewed-by: Aleksandr Loktionov Tested-by: Patryk Holda Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/i40e/i40e_main.c | 30 +++++++++++++++++++++ drivers/net/ethernet/intel/i40e/i40e_type.h | 5 ++++ 2 files changed, 35 insertions(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 4b11ae9ed8d5..e487d697a634 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -4,6 +4,7 @@ #include #include #include +#include #include #include #include @@ -13582,6 +13583,34 @@ static int i40e_xdp(struct net_device *dev, } } +static int i40e_xdp_rx_hash(const struct xdp_md *_ctx, u32 *hash, + enum xdp_rss_hash_type *rss_type) +{ + const struct i40e_xdp_buff *ctx = (const void *)_ctx; + const union i40e_rx_desc *desc = ctx->desc; + struct libeth_rx_pt rx_ptype; + u8 raw_rx_ptype; + u64 status; + + status = le64_to_cpu(desc->wb.qword1.status_error_len); + raw_rx_ptype = FIELD_GET(I40E_RXD_QW1_PTYPE_MASK, status); + rx_ptype = libie_rx_pt_parse(raw_rx_ptype); + + if (!libeth_rx_pt_has_hash(ctx->xdp.rxq->dev, rx_ptype) || + FIELD_GET(I40E_RX_DESC_STATUS_FLTSTAT_MASK, status) != + I40E_RX_DESC_FLTSTAT_RSS_HASH) + return -ENODATA; + + *hash = le32_to_cpu(desc->wb.qword0.hi_dword.rss); + *rss_type = rx_ptype.hash_type; + + return 0; +} + +static const struct xdp_metadata_ops i40e_xdp_metadata_ops = { + .xmo_rx_hash = i40e_xdp_rx_hash, +}; + static const struct net_device_ops i40e_netdev_ops = { .ndo_open = i40e_open, .ndo_stop = i40e_close, @@ -13784,6 +13813,7 @@ static int i40e_config_netdev(struct i40e_vsi *vsi) i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc); netdev->netdev_ops = &i40e_netdev_ops; + netdev->xdp_metadata_ops = &i40e_xdp_metadata_ops; netdev->watchdog_timeo = 5 * HZ; i40e_set_ethtool_ops(netdev); diff --git a/drivers/net/ethernet/intel/i40e/i40e_type.h b/drivers/net/ethernet/intel/i40e/i40e_type.h index ed8bbdb586da..16a65c6e5153 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_type.h +++ b/drivers/net/ethernet/intel/i40e/i40e_type.h @@ -4,6 +4,7 @@ #ifndef _I40E_TYPE_H_ #define _I40E_TYPE_H_ +#include #include #include "i40e_adminq.h" #include "i40e_hmc.h" @@ -699,6 +700,10 @@ enum i40e_rx_desc_status_bits { I40E_RX_DESC_STATUS_LAST /* this entry must be last!!! */ }; +#define I40E_RX_DESC_STATUS_FLTSTAT_MASK \ + GENMASK_ULL(I40E_RX_DESC_STATUS_FLTSTAT_SHIFT + 1, \ + I40E_RX_DESC_STATUS_FLTSTAT_SHIFT) + #define I40E_RXD_QW1_STATUS_SHIFT 0 #define I40E_RXD_QW1_STATUS_MASK ((BIT(I40E_RX_DESC_STATUS_LAST) - 1) \ << I40E_RXD_QW1_STATUS_SHIFT) -- 2.47.1