From patchwork Mon Sep 30 16:08:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Barker X-Patchwork-Id: 13816669 X-Patchwork-Delegate: kuba@kernel.org Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2156E1922F4; Mon, 30 Sep 2024 16:09:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727712594; cv=none; b=jkCh3nvDxZkUbvkyYTeffR0FaXoUEKEKX4/mHhJ2ONlwPOqsiMr6pTgT7B5hDsW0o1AlregIr3XDFyyyKMfs7miJIv0XIiOFLbeoHRnzpR9ang775whO9o1MM2CSHcxnSNTcGWrMkhEjYLEGenIt+vxCwR+jXbzpe5xoX3WcMmY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727712594; c=relaxed/simple; bh=IZ9CPul3h+k6m4vAfdAx+DtxwAdYljmJ1DMBrJM62Nw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Gg96PYx0aYfCv63YRNWHSqzL/X9PONzNqBkJpZfiBvmjpp+IEazx/Bg1DgHpHfWLHWUS+H7zuGvXkzI37nqikjgZb4WS3d7io3ZeDU+77YX17x9wfiE8GpRW4FOhCtlSicIaqFsdIMdosBMQ7+4c7gII22Rup7CXKmaiPb3guAg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pbarker.dev; spf=fail smtp.mailfrom=pbarker.dev; arc=none smtp.client-ip=210.160.252.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pbarker.dev Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=pbarker.dev X-IronPort-AV: E=Sophos;i="6.11,166,1725289200"; d="scan'208";a="220371977" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 01 Oct 2024 01:09:52 +0900 Received: from GBR-5CG2373LKG.adwin.renesas.com (unknown [10.226.93.43]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id D862A4006371; Tue, 1 Oct 2024 01:09:45 +0900 (JST) From: Paul Barker To: Sergey Shtylyov , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Paul Barker , Geert Uytterhoeven , =?utf-8?q?Niklas_S=C3=B6derlu?= =?utf-8?q?nd?= , Biju Das , Claudiu Beznea , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [net-next PATCH 10/11] net: ravb: Enable IPv6 TX checksum offload for GbEth Date: Mon, 30 Sep 2024 17:08:44 +0100 Message-Id: <20240930160845.8520-11-paul@pbarker.dev> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240930160845.8520-1-paul@pbarker.dev> References: <20240930160845.8520-1-paul@pbarker.dev> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Paul Barker The GbEth IP supports offloading IPv6 TCP, UDP & ICMPv6 checksums. Signed-off-by: Paul Barker Reviewed-by: Sergey Shtylyov --- drivers/net/ethernet/renesas/ravb.h | 3 ++- drivers/net/ethernet/renesas/ravb_main.c | 31 ++++++++++++++---------- 2 files changed, 20 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index 8523b89ba1c6..2cb6c4ef1330 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -998,7 +998,8 @@ enum CSR1_BIT { CSR1_TDHD = 0x08000000, }; -#define CSR1_CSUM_ENABLE (CSR1_TTCP4 | CSR1_TUDP4 | CSR1_TICMP4) +#define CSR1_CSUM_ENABLE (CSR1_TTCP4 | CSR1_TUDP4 | CSR1_TICMP4 | \ + CSR1_TTCP6 | CSR1_TUDP6 | CSR1_TICMP6) enum CSR2_BIT { CSR2_RIP4 = 0x00000001, diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 69d71fbf3e02..832132d44fb4 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2063,25 +2063,30 @@ static void ravb_tx_timeout_work(struct work_struct *work) static bool ravb_can_tx_csum_gbeth(struct sk_buff *skb) { - struct iphdr *ip = ip_hdr(skb); - /* TODO: Need to add support for VLAN tag 802.1Q */ if (skb_vlan_tag_present(skb)) return false; - /* TODO: Need to add hardware checksum for IPv6 */ - if (skb->protocol != htons(ETH_P_IP)) - return false; - - switch (ip->protocol) { - case IPPROTO_TCP: - case IPPROTO_UDP: - case IPPROTO_ICMP: - return true; + switch (ntohs(skb->protocol)) { + case ETH_P_IP: + switch (ip_hdr(skb)->protocol) { + case IPPROTO_TCP: + case IPPROTO_UDP: + case IPPROTO_ICMP: + return true; + } + break; - default: - return false; + case ETH_P_IPV6: + switch (ipv6_hdr(skb)->nexthdr) { + case IPPROTO_TCP: + case IPPROTO_UDP: + case IPPROTO_ICMPV6: + return true; + } } + + return false; } /* Packet transmit function for Ethernet AVB */