From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (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 8E39C3EDE4A for ; Thu, 21 May 2026 12:50:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779367830; cv=none; b=NofOguxRRI15ZjV/FWI9DLQllMmkqetdzYQP2I0rUalelLde/aQcCBKpRh5BE/4LDgcXlFkn7Ufh8nk5+A8LyEB4FukSNNBLk6iJ6Dzoj2QLHQqLhx76rhsNFKeUhK1KKiViYy5k/jxr6XKa1s9iwQBb1MHuhhk5AEm9L+bLvno= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779367830; c=relaxed/simple; bh=nKAESxCQVmQaD4JAO0u2kGq2Irs5fn9TuYYR3JEdBQ0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ALKJszjtuYOKtqPmpjcp9GBgyKCM/mUtO0CoGQdFBtsXqvz4yMEYg7HIXc4/E9EpdC2Gxwl/GDiy8qix7N0MvHEAGyJ7sLaSl8hch5EMoMEsVipIwmnceyn2HGnfvsijz7SEAkF/YnjjZFiAvxeBOKszbeZBujkpo0nkoChwEX0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=nWbC075M; arc=none smtp.client-ip=198.175.65.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nWbC075M" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1779367829; x=1810903829; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nKAESxCQVmQaD4JAO0u2kGq2Irs5fn9TuYYR3JEdBQ0=; b=nWbC075M1MIv2U4T30D5V7gT+XHCP8oFL315dGxBmKrAo2FazXYfe4bA VIH2RmXWT5KyKvzpRaxS75f7JISY0F63Eq9NmEr0oZAzuZeERV3P9sXcS GRrJHQzrZ21G6MzVh52ITguVoPj8effZxDiZIQyxj+qzzFUzH+9q6dahH ooFxgAVEycVuqaEfuPma+M6U77m+GtCKDFUF3RfT9MGaq2sZEN+GjapX+ 52fuyXZAkls+0/MREhzflDyS+Pvv52wuuJZtv1+6gOp5PUKi4tkeO+tPB kcP7yl2nUqK8puO0Tk6s8eoXc1WswYNTYij1/Y9ZdgcOR5m0YN0GP+kbF g==; X-CSE-ConnectionGUID: Tjj/EbrZRtmn63IUJHl2yA== X-CSE-MsgGUID: N1bZDmEWS9qYba18l5rkjw== X-IronPort-AV: E=McAfee;i="6800,10657,11792"; a="80013521" X-IronPort-AV: E=Sophos;i="6.23,246,1770624000"; d="scan'208";a="80013521" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2026 05:50:29 -0700 X-CSE-ConnectionGUID: dvqGcTPBRgiC5Lg2IX3c9A== X-CSE-MsgGUID: 4lQw7ib+S7eem2wetP8Jaw== X-ExtLoop1: 1 Received: from irvmail002.ir.intel.com ([10.43.11.120]) by fmviesa003.fm.intel.com with ESMTP; 21 May 2026 05:50:26 -0700 Received: from gond.igk.intel.com (gond.igk.intel.com [10.123.220.52]) by irvmail002.ir.intel.com (Postfix) with ESMTP id 5A75528780; Thu, 21 May 2026 13:50:25 +0100 (IST) From: Marcin Szycik To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, sandeep.penigalapati@intel.com, ananth.s@intel.com, alexander.duyck@gmail.com, Lukasz Czapnik Subject: [PATCH iwl-next v4 10/10] ice: use ACL for ntuple rules that conflict with FDir Date: Thu, 21 May 2026 13:50:00 +0200 Message-ID: <20260521115000.4637-11-marcin.szycik@linux.intel.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20260521115000.4637-1-marcin.szycik@linux.intel.com> References: <20260521115000.4637-1-marcin.szycik@linux.intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Lukasz Czapnik Flow Director can keep only one input set per flow type. After ACL support was added for ethtool ntuple rules, the driver still only selected ACL for rules with partial masks. That leaves a gap for rules with full masks that still require a different input set than the one already programmed for Flow Director. Such rules go through the FDir path, build a different extraction sequence and then fail because the existing FDir profile cannot be reused. Detect this case before programming the rule. Build the candidate IP flow segment, compare it with the active non-tunneled FDir profile and, when the input sets differ, offload the rule through ACL if ACL is available. Refactor the IP flow segment setup into a helper so the same logic can be used both by the extraction-sequence configuration path and by the conflict check. Signed-off-by: Lukasz Czapnik --- v3: * Include flex fields in test_seg to avoid false conflict detection * Skip conflict check early for ETHER_FLOW v2: * Add this patch --- .../ethernet/intel/ice/ice_ethtool_ntuple.c | 168 +++++++++++++----- 1 file changed, 121 insertions(+), 47 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool_ntuple.c b/drivers/net/ethernet/intel/ice/ice_ethtool_ntuple.c index 955dca313a8d..aabcbf224731 100644 --- a/drivers/net/ethernet/intel/ice/ice_ethtool_ntuple.c +++ b/drivers/net/ethernet/intel/ice/ice_ethtool_ntuple.c @@ -1428,6 +1428,115 @@ ice_set_fdir_vlan_seg(struct ice_flow_seg_info *seg, return 0; } +/** + * ice_set_fdir_ip_flow_seg - set IP flow segment based on ethtool flow type + * @fsp: pointer to ethtool Rx flow specification + * @seg: flow segment for programming + * @perfect_fltr: valid on success; returns true if perfect fltr, false if not + * + * Return: 0 on success and errno in case of error. + */ +static int ice_set_fdir_ip_flow_seg(struct ethtool_rx_flow_spec *fsp, + struct ice_flow_seg_info *seg, + bool *perfect_fltr) +{ + switch (fsp->flow_type & ~FLOW_EXT) { + case TCP_V4_FLOW: + return ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec, + ICE_FLOW_SEG_HDR_TCP, perfect_fltr); + case UDP_V4_FLOW: + return ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec, + ICE_FLOW_SEG_HDR_UDP, perfect_fltr); + case SCTP_V4_FLOW: + return ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec, + ICE_FLOW_SEG_HDR_SCTP, + perfect_fltr); + case IPV4_USER_FLOW: + return ice_set_fdir_ip4_usr_seg(seg, &fsp->m_u.usr_ip4_spec, + perfect_fltr); + case TCP_V6_FLOW: + return ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec, + ICE_FLOW_SEG_HDR_TCP, perfect_fltr); + case UDP_V6_FLOW: + return ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec, + ICE_FLOW_SEG_HDR_UDP, perfect_fltr); + case SCTP_V6_FLOW: + return ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec, + ICE_FLOW_SEG_HDR_SCTP, + perfect_fltr); + case IPV6_USER_FLOW: + return ice_set_fdir_ip6_usr_seg(seg, &fsp->m_u.usr_ip6_spec, + perfect_fltr); + default: + return -EINVAL; + } +} + +/** + * ice_fdir_has_input_set_conflict - Check conflict with existing FD filters + * @pf: PF structure + * @fsp: pointer to ethtool Rx flow specification + * @user: user-defined data parsed from flow specification + * + * Checks if adding this filter to Flow Director would cause an input set + * mismatch with existing filters for the same flow type by building + * the segment and comparing with existing profiles. + * + * Return: true if there's a conflict (use ACL), false otherwise (can use FD) + */ +static bool +ice_fdir_has_input_set_conflict(struct ice_pf *pf, + struct ethtool_rx_flow_spec *fsp, + const struct ice_rx_flow_userdef *user) +{ + struct ice_flow_seg_info *test_seg, *old_seg; + bool perfect_fltr = false, conflict = false; + struct ice_fd_hw_prof *hw_prof; + struct ice_hw *hw = &pf->hw; + enum ice_fltr_ptype flow; + int err; + + if ((fsp->flow_type & ~FLOW_EXT) == ETHER_FLOW) + return false; + + flow = ice_ethtool_flow_to_fltr(fsp->flow_type & ~FLOW_EXT); + if (flow >= ICE_FLTR_PTYPE_MAX || !hw->fdir_prof || + !hw->fdir_prof[flow]) { + return false; + } + + hw_prof = hw->fdir_prof[flow]; + old_seg = hw_prof->fdir_seg[ICE_FD_HW_SEG_NON_TUN]; + + if (!old_seg || hw->fdir_fltr_cnt[flow] == 0) + return false; + + test_seg = kzalloc_obj(*test_seg); + if (!test_seg) + return false; + + err = ice_set_fdir_ip_flow_seg(fsp, test_seg, &perfect_fltr); + + if (err) { + kfree(test_seg); + return false; + } + + if (user && user->flex_fltr) + ice_flow_add_fld_raw(test_seg, user->flex_offset, + ICE_FLTR_PRGM_FLEX_WORD_SIZE, + ICE_FLOW_FLD_OFF_INVAL, + ICE_FLOW_FLD_OFF_INVAL); + + /* Compare the test segment with the existing segment */ + if (memcmp(old_seg, test_seg, sizeof(*test_seg)) != 0) + conflict = true; + + kfree(test_seg); + + return conflict; +} + /** * ice_cfg_fdir_xtrct_seq - Configure extraction sequence for the given filter * @pf: PF structure @@ -1458,57 +1567,16 @@ ice_cfg_fdir_xtrct_seq(struct ice_pf *pf, struct ethtool_rx_flow_spec *fsp, return -ENOMEM; } - switch (fsp->flow_type & ~FLOW_EXT) { - case TCP_V4_FLOW: - ret = ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec, - ICE_FLOW_SEG_HDR_TCP, - &perfect_filter); - break; - case UDP_V4_FLOW: - ret = ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec, - ICE_FLOW_SEG_HDR_UDP, - &perfect_filter); - break; - case SCTP_V4_FLOW: - ret = ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec, - ICE_FLOW_SEG_HDR_SCTP, - &perfect_filter); - break; - case IPV4_USER_FLOW: - ret = ice_set_fdir_ip4_usr_seg(seg, &fsp->m_u.usr_ip4_spec, - &perfect_filter); - break; - case TCP_V6_FLOW: - ret = ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec, - ICE_FLOW_SEG_HDR_TCP, - &perfect_filter); - break; - case UDP_V6_FLOW: - ret = ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec, - ICE_FLOW_SEG_HDR_UDP, - &perfect_filter); - break; - case SCTP_V6_FLOW: - ret = ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec, - ICE_FLOW_SEG_HDR_SCTP, - &perfect_filter); - break; - case IPV6_USER_FLOW: - ret = ice_set_fdir_ip6_usr_seg(seg, &fsp->m_u.usr_ip6_spec, - &perfect_filter); - break; - case ETHER_FLOW: + if ((fsp->flow_type & ~FLOW_EXT) == ETHER_FLOW) { ret = ice_set_ether_flow_seg(dev, seg, &fsp->m_u.ether_spec); if (!ret && (fsp->m_ext.vlan_etype || fsp->m_ext.vlan_tci)) { - if (!ice_fdir_vlan_valid(dev, fsp)) { + if (!ice_fdir_vlan_valid(dev, fsp)) ret = -EINVAL; - break; - } - ret = ice_set_fdir_vlan_seg(seg, &fsp->m_ext); + else + ret = ice_set_fdir_vlan_seg(seg, &fsp->m_ext); } - break; - default: - ret = -EINVAL; + } else { + ret = ice_set_fdir_ip_flow_seg(fsp, seg, &perfect_filter); } if (ret) goto err_exit; @@ -2239,6 +2307,12 @@ int ice_add_ntuple_ethtool(struct ice_vsi *vsi, struct ethtool_rxnfc *cmd) if (pf->hw.acl_tbl && ice_is_acl_filter(fsp)) return ice_acl_add_rule_ethtool(vsi, cmd); + /* Check if this would cause input set conflict with existing FD filters + */ + if (pf->hw.acl_tbl && ice_fdir_has_input_set_conflict(pf, fsp, + &userdata)) + return ice_acl_add_rule_ethtool(vsi, cmd); + ret = ice_cfg_fdir_xtrct_seq(pf, fsp, &userdata); if (ret) return ret; -- 2.49.0