From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 818B8E7C4EB for ; Wed, 4 Oct 2023 18:36:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244448AbjJDSgW (ORCPT ); Wed, 4 Oct 2023 14:36:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244449AbjJDSgV (ORCPT ); Wed, 4 Oct 2023 14:36:21 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FC6F98 for ; Wed, 4 Oct 2023 11:36:17 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B52F9C433C7; Wed, 4 Oct 2023 18:36:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1696444577; bh=4+315nHMhNHun87aio1ilpOBxWkhdZwMyvNdIqMSA6c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Eot9scf4wypbNXjjEu+i1iIHhby9Y07Mjbq7zJzW0P1encrQd3uzYMaqre1HL45Kr 7rCrJ6Ghxfb9XzRE56MYLSAgMxe+i7b3FxCnJuPZRIInYinNv6Ac5eAfgrXK6PcdTQ FBaqNHj7aANYU3F7O+NlAv7EUNSa9a+afNn1uj1k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alex Balcanquall , Mika Westerberg , Eric Dumazet , Jiri Pirko , "David S. Miller" Subject: [PATCH 6.5 299/321] net: thunderbolt: Fix TCPv6 GSO checksum calculation Date: Wed, 4 Oct 2023 19:57:24 +0200 Message-ID: <20231004175243.144047112@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231004175229.211487444@linuxfoundation.org> References: <20231004175229.211487444@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mika Westerberg commit e0b65f9b81fef180cf5f103adecbe5505c961153 upstream. Alex reported that running ssh over IPv6 does not work with Thunderbolt/USB4 networking driver. The reason for that is that driver should call skb_is_gso() before calling skb_is_gso_v6(), and it should not return false after calculates the checksum successfully. This probably was a copy paste error from the original driver where it was done properly. Reported-by: Alex Balcanquall Fixes: e69b6c02b4c3 ("net: Add support for networking over Thunderbolt cable") Cc: stable@vger.kernel.org Signed-off-by: Mika Westerberg Reviewed-by: Eric Dumazet Reviewed-by: Jiri Pirko Reviewed-by: Jiri Pirko Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/thunderbolt/main.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/net/thunderbolt/main.c +++ b/drivers/net/thunderbolt/main.c @@ -1049,12 +1049,11 @@ static bool tbnet_xmit_csum_and_map(stru *tucso = ~csum_tcpudp_magic(ip_hdr(skb)->saddr, ip_hdr(skb)->daddr, 0, ip_hdr(skb)->protocol, 0); - } else if (skb_is_gso_v6(skb)) { + } else if (skb_is_gso(skb) && skb_is_gso_v6(skb)) { tucso = dest + ((void *)&(tcp_hdr(skb)->check) - data); *tucso = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); - return false; } else if (protocol == htons(ETH_P_IPV6)) { tucso = dest + skb_checksum_start_offset(skb) + skb->csum_offset; *tucso = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,