From patchwork Tue Apr 10 17:49:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinicius Costa Gomes X-Patchwork-Id: 896854 X-Patchwork-Delegate: jeffrey.t.kirsher@intel.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=osuosl.org (client-ip=140.211.166.133; helo=hemlock.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=intel.com Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40LF7r1bjzz9s3B for ; Wed, 11 Apr 2018 03:50:32 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id CBFE187A57; Tue, 10 Apr 2018 17:50:30 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id AnFyYKplKa5d; Tue, 10 Apr 2018 17:50:28 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by hemlock.osuosl.org (Postfix) with ESMTP id 791CE87B3C; Tue, 10 Apr 2018 17:50:28 +0000 (UTC) X-Original-To: intel-wired-lan@lists.osuosl.org Delivered-To: intel-wired-lan@lists.osuosl.org Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by ash.osuosl.org (Postfix) with ESMTP id D076C1C11AD for ; Tue, 10 Apr 2018 17:50:26 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id CDF3485142 for ; Tue, 10 Apr 2018 17:50:26 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dZxrzWt6hXU6 for ; Tue, 10 Apr 2018 17:50:26 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 52E1D84FCA for ; Tue, 10 Apr 2018 17:50:26 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Apr 2018 10:50:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,433,1517904000"; d="scan'208";a="215551512" Received: from kjnewhou-mobl1.amr.corp.intel.com (HELO localhost.localdomain) ([10.254.183.149]) by orsmga005.jf.intel.com with ESMTP; 10 Apr 2018 10:50:25 -0700 From: Vinicius Costa Gomes To: intel-wired-lan@lists.osuosl.org Date: Tue, 10 Apr 2018 10:49:55 -0700 Message-Id: <20180410174959.18757-7-vinicius.gomes@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180410174959.18757-1-vinicius.gomes@intel.com> References: <20180410174959.18757-1-vinicius.gomes@intel.com> Subject: [Intel-wired-lan] [next-queue PATCH v7 06/10] igb: Allow filters to be added for the local MAC address X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.24 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: netdev@vger.kernel.org, jesus.sanchez-palencia@intel.com MIME-Version: 1.0 Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" Users expect that when adding a steering filter for the local MAC address, that all the traffic directed to that address will go to some queue. Currently, it's not possible to configure entries in the "in use" state, which is the normal state of the local MAC address entry (it is the default), this patch allows to override the steering configuration of "in use" entries, if the filter to be added match the address and address type (source or destination) of an existing entry. There is a bit of a special handling for entries referring to the local MAC address, when they are removed, only the steering configuration is reset. Signed-off-by: Vinicius Costa Gomes Tested-by: Aaron Brown --- drivers/net/ethernet/intel/igb/igb_main.c | 40 ++++++++++++++++++++--- 1 file changed, 36 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index e3da35cab786..1b6fad88107a 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -6844,6 +6844,27 @@ static void igb_set_default_mac_filter(struct igb_adapter *adapter) igb_rar_set_index(adapter, 0); } +/* If the filter to be added and an already existing filter express + * the same address and address type, it should be possible to only + * override the other configurations, for example the queue to steer + * traffic. + */ +static bool igb_mac_entry_can_be_used(const struct igb_mac_addr *entry, + const u8 *addr, const u8 flags) +{ + if (!(entry->state & IGB_MAC_STATE_IN_USE)) + return true; + + if ((entry->state & IGB_MAC_STATE_SRC_ADDR) != + (flags & IGB_MAC_STATE_SRC_ADDR)) + return false; + + if (!ether_addr_equal(addr, entry->addr)) + return false; + + return true; +} + /* Add a MAC filter for 'addr' directing matching traffic to 'queue', * 'flags' is used to indicate what kind of match is made, match is by * default for the destination address, if matching by source address @@ -6866,7 +6887,8 @@ static int igb_add_mac_filter_flags(struct igb_adapter *adapter, * addresses. */ for (i = 0; i < rar_entries; i++) { - if (adapter->mac_table[i].state & IGB_MAC_STATE_IN_USE) + if (!igb_mac_entry_can_be_used(&adapter->mac_table[i], + addr, flags)) continue; ether_addr_copy(adapter->mac_table[i].addr, addr); @@ -6918,9 +6940,19 @@ static int igb_del_mac_filter_flags(struct igb_adapter *adapter, if (!ether_addr_equal(adapter->mac_table[i].addr, addr)) continue; - adapter->mac_table[i].state = 0; - memset(adapter->mac_table[i].addr, 0, ETH_ALEN); - adapter->mac_table[i].queue = 0; + /* When a filter for the default address is "deleted", + * we return it to its initial configuration + */ + if (adapter->mac_table[i].state & IGB_MAC_STATE_DEFAULT) { + adapter->mac_table[i].state = + IGB_MAC_STATE_DEFAULT | IGB_MAC_STATE_IN_USE; + adapter->mac_table[i].queue = + adapter->vfs_allocated_count; + } else { + adapter->mac_table[i].state = 0; + adapter->mac_table[i].queue = 0; + memset(adapter->mac_table[i].addr, 0, ETH_ALEN); + } igb_rar_set_index(adapter, i); return 0;