From: Sasha Levin Subject: [PATCH AUTOSEL 4.19 28/97] nfp: flower: ensure TCP flags can be placed in IPv6 frame Date: Wed, 26 Dec 2018 17:34:48 -0500 Message-ID: <20181226223557.149329-28-sashal@kernel.org> References: <20181226223557.149329-1-sashal@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: Pieter Jansen van Vuuren , "David S . Miller" , Sasha Levin , oss-drivers@netronome.com, netdev@vger.kernel.org To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: Received: from mail.kernel.org ([198.145.29.99]:36696 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727813AbeLZWgn (ORCPT ); Wed, 26 Dec 2018 17:36:43 -0500 In-Reply-To: <20181226223557.149329-1-sashal@kernel.org> Sender: netdev-owner@vger.kernel.org List-ID: From: Pieter Jansen van Vuuren [ Upstream commit 290974d434783624c13a9530a23c45f9c5ffe018 ] Previously we did not ensure tcp flags have a place to be stored when using IPv6. We correct this by including IPv6 key layer when we match tcp flags and the IPv6 key layer has not been included already. Fixes: 07e1671cfca5 ("nfp: flower: refactor shared ip header in match offload") Signed-off-by: Pieter Jansen van Vuuren Reviewed-by: Jakub Kicinski Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- .../ethernet/netronome/nfp/flower/offload.c | 28 +++++++++++++++---- 1 file changed, 22 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c b/drivers/net/ethernet/netronome/nfp/flower/offload.c index bd19624f10cf..90148dbb261b 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/offload.c +++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c @@ -375,13 +375,29 @@ nfp_flower_calculate_key_layers(struct nfp_app *app, !(tcp_flags & (TCPHDR_FIN | TCPHDR_SYN | TCPHDR_RST))) return -EOPNOTSUPP; - /* We need to store TCP flags in the IPv4 key space, thus - * we need to ensure we include a IPv4 key layer if we have - * not done so already. + /* We need to store TCP flags in the either the IPv4 or IPv6 key + * space, thus we need to ensure we include a IPv4/IPv6 key + * layer if we have not done so already. */ - if (!(key_layer & NFP_FLOWER_LAYER_IPV4)) { - key_layer |= NFP_FLOWER_LAYER_IPV4; - key_size += sizeof(struct nfp_flower_ipv4); + if (!key_basic) + return -EOPNOTSUPP; + + if (!(key_layer & NFP_FLOWER_LAYER_IPV4) && + !(key_layer & NFP_FLOWER_LAYER_IPV6)) { + switch (key_basic->n_proto) { + case cpu_to_be16(ETH_P_IP): + key_layer |= NFP_FLOWER_LAYER_IPV4; + key_size += sizeof(struct nfp_flower_ipv4); + break; + + case cpu_to_be16(ETH_P_IPV6): + key_layer |= NFP_FLOWER_LAYER_IPV6; + key_size += sizeof(struct nfp_flower_ipv6); + break; + + default: + return -EOPNOTSUPP; + } } } -- 2.19.1