From patchwork Fri Nov 11 13:05:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steen Hegelund X-Patchwork-Id: 13040304 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 87FA0C4332F for ; Fri, 11 Nov 2022 13:07:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=B2nf3pjjtD0ySdes2VKxUvD2fk0hA7kg+hOJQMbpABU=; b=KTW7MptEXYDKkT g5X/Op1yfa7VGjQtNrERfJit0xxY2GNtLKk6hd4AAK6eAs0BljEHjJ27Om4h5pSVrbmbl0GVGAmGY JJFjQtClgbDcqG1zp+mPG09hlSr1GxQ+Q0ixMcRVwyH+U59YNGAv3oQ1phPEFxdDxyz5JbenPdSIH Zgpn3bb65R1nDHekf1HteAJ/DC/7V5pVbh+SkA7DBz4usJuWWU3iHJgplBjvxCuc76sT54ljmwQL5 Mz7vqAMpE7aZxh+7bProlh1NUMA9GHXUE1YgwkL1N4xh28/V7aJNLX+akR85YyBMA5a8BqB+5d1NW WiyG65nxdJsZqEnYbVUA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1otTjM-00FlmH-Eh; Fri, 11 Nov 2022 13:06:00 +0000 Received: from esa.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1otTj0-00FlZB-Mt for linux-arm-kernel@lists.infradead.org; Fri, 11 Nov 2022 13:05:41 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1668171938; x=1699707938; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=MwMrFBuJYmXmypJ56eKGRvFX0VICWHsAbwpGcGNvxjw=; b=hqfT6YVSzbEud2z88KPJtw+TWGT3ViWdHma70fIxEar2R50Zv4GO7La1 sy5D3oGGI5e6V6VaFa0m1XY+1ypLqSqVjg2y+idj63Cb2unOO0b6SnyBz /He68ABfZqjqW5YBAl+4tBpoMvoXTdCZUEgyMd/DmA6Kapglieb9jjgdC Qs5juL7UIk9Z/i0UTocxDw64+SKbBQ7Nvc54B6EFh5dWwnUzCl3S3lpYS bVWEMKZJ/O7qmj3SAj+frPLjXGNb1uUUZkOKizaaRk0u3SfdbgQoAkWng sXlkTmzminV2hHQ6ROMIxha5PQlvlNAhDQrfkvkWexsyRfj/85NY/lRwC w==; X-IronPort-AV: E=Sophos;i="5.96,156,1665471600"; d="scan'208";a="123000930" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa6.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 11 Nov 2022 06:05:37 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 11 Nov 2022 06:05:37 -0700 Received: from den-dk-m31857.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 11 Nov 2022 06:05:33 -0700 From: Steen Hegelund To: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni CC: Steen Hegelund , , Randy Dunlap , "Casper Andersson" , Russell King , Wan Jiabing , "Nathan Huckleberry" , , , , "Steen Hegelund" , Daniel Machon , Horatiu Vultur , Lars Povlsen , Simon Horman , Louis Peens , "Wojciech Drewek" , Baowen Zheng , Maksym Glubokiy , Pablo Neira Ayuso Subject: [PATCH net-next 2/6] net: microchip: sparx5: Add support for TC flower ARP dissector Date: Fri, 11 Nov 2022 14:05:15 +0100 Message-ID: <20221111130519.1459549-3-steen.hegelund@microchip.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221111130519.1459549-1-steen.hegelund@microchip.com> References: <20221111130519.1459549-1-steen.hegelund@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221111_050538_872743_5010E6B5 X-CRM114-Status: GOOD ( 14.19 ) 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 This add support for Sparx5 for dissecting TC ARP flower filter keys and sets up the Sparx5 IS2 VCAP to generate the ARP keyset for ARP frames. Signed-off-by: Steen Hegelund --- .../microchip/sparx5/sparx5_tc_flower.c | 76 +++++++++++++++++++ .../microchip/sparx5/sparx5_vcap_impl.c | 2 +- 2 files changed, 77 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c b/drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c index 7b364f6b4546..b76b8fc567bb 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c @@ -26,10 +26,24 @@ struct sparx5_tc_flower_parse_usage { */ static u16 sparx5_tc_known_etypes[] = { ETH_P_ALL, + ETH_P_ARP, ETH_P_IP, ETH_P_IPV6, }; +enum sparx5_is2_arp_opcode { + SPX5_IS2_ARP_REQUEST, + SPX5_IS2_ARP_REPLY, + SPX5_IS2_RARP_REQUEST, + SPX5_IS2_RARP_REPLY, +}; + +enum tc_arp_opcode { + TC_ARP_OP_RESERVED, + TC_ARP_OP_REQUEST, + TC_ARP_OP_REPLY, +}; + static bool sparx5_tc_is_known_etype(u16 etype) { int idx; @@ -404,6 +418,67 @@ sparx5_tc_flower_handler_tcp_usage(struct sparx5_tc_flower_parse_usage *st) return err; } +static int +sparx5_tc_flower_handler_arp_usage(struct sparx5_tc_flower_parse_usage *st) +{ + struct flow_match_arp mt; + u16 value, mask; + u32 ipval, ipmsk; + int err; + + flow_rule_match_arp(st->frule, &mt); + + if (mt.mask->op) { + mask = 0x3; + if (st->l3_proto == ETH_P_ARP) { + value = mt.key->op == TC_ARP_OP_REQUEST ? + SPX5_IS2_ARP_REQUEST : + SPX5_IS2_ARP_REPLY; + } else { /* RARP */ + value = mt.key->op == TC_ARP_OP_REQUEST ? + SPX5_IS2_RARP_REQUEST : + SPX5_IS2_RARP_REPLY; + } + err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_ARP_OPCODE, + value, mask); + if (err) + goto out; + } + + /* The IS2 ARP keyset does not support ARP hardware addresses */ + if (!is_zero_ether_addr(mt.mask->sha) || + !is_zero_ether_addr(mt.mask->tha)) + goto out; + + if (mt.mask->sip) { + ipval = be32_to_cpu((__force __be32)mt.key->sip); + ipmsk = be32_to_cpu((__force __be32)mt.mask->sip); + + err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_L3_IP4_SIP, + ipval, ipmsk); + if (err) + goto out; + } + + if (mt.mask->tip) { + ipval = be32_to_cpu((__force __be32)mt.key->tip); + ipmsk = be32_to_cpu((__force __be32)mt.mask->tip); + + err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_L3_IP4_DIP, + ipval, ipmsk); + if (err) + goto out; + } + + st->used_keys |= BIT(FLOW_DISSECTOR_KEY_ARP); + + return err; + +out: + NL_SET_ERR_MSG_MOD(st->fco->common.extack, "arp parse error"); + return err; +} + static int sparx5_tc_flower_handler_ip_usage(struct sparx5_tc_flower_parse_usage *st) { @@ -438,6 +513,7 @@ static int (*sparx5_tc_flower_usage_handlers[])(struct sparx5_tc_flower_parse_us [FLOW_DISSECTOR_KEY_BASIC] = sparx5_tc_flower_handler_basic_usage, [FLOW_DISSECTOR_KEY_VLAN] = sparx5_tc_flower_handler_vlan_usage, [FLOW_DISSECTOR_KEY_TCP] = sparx5_tc_flower_handler_tcp_usage, + [FLOW_DISSECTOR_KEY_ARP] = sparx5_tc_flower_handler_arp_usage, [FLOW_DISSECTOR_KEY_IP] = sparx5_tc_flower_handler_ip_usage, }; diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c index 10bc56cd0045..db73e2b19dc5 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c @@ -540,7 +540,7 @@ static void sparx5_vcap_port_key_selection(struct sparx5 *sparx5, VCAP_IS2_PS_IPV4_UC_IP4_TCP_UDP_OTHER, VCAP_IS2_PS_IPV6_MC_IP_7TUPLE, VCAP_IS2_PS_IPV6_UC_IP_7TUPLE, - VCAP_IS2_PS_ARP_MAC_ETYPE); + VCAP_IS2_PS_ARP_ARP); for (lookup = 0; lookup < admin->lookups; ++lookup) { for (portno = 0; portno < SPX5_PORTS; ++portno) { spx5_wr(keysel, sparx5,