From 7afc70d063523d563f11360b6e8174d809efd3fc Mon Sep 17 00:00:00 2001 From: Alaa Hleihel Date: Sun, 10 May 2020 14:52:17 -0400 Subject: [PATCH 045/312] [netdrv] net/mlx5e: Support RSS for IP-in-IP and IPv6 tunneled packets Message-id: <20200510145245.10054-55-ahleihel@redhat.com> Patchwork-id: 306595 Patchwork-instance: patchwork O-Subject: [RHEL8.3 BZ 1789378 v2 54/82] net/mlx5e: Support RSS for IP-in-IP and IPv6 tunneled packets Bugzilla: 1789378 RH-Acked-by: Kamal Heib RH-Acked-by: Jarod Wilson RH-Acked-by: Tony Camuso RH-Acked-by: Jonathan Toppins Bugzilla: http://bugzilla.redhat.com/1789378 Upstream: v5.4-rc1 commit a795d8db2a6d3c6f80e7002dd6357e6736dad1b6 Author: Aya Levin Date: Mon Apr 29 17:45:52 2019 +0300 net/mlx5e: Support RSS for IP-in-IP and IPv6 tunneled packets Add support for inner header RSS on IP-in-IP and IPv6 tunneled packets. Add rules to the steering table regarding outer IP header, with IPv4/6->IP-in-IP. Tunneled packets with protocol numbers: 0x4 (IP-in-IP) and 0x29 (IPv6) are RSS-ed on the inner IP header. Separate FW dependencies between flow table inner IP capabilities and GRE offload support. Allowing this feature even if GRE offload is not supported. Tested with multi stream TCP traffic tunneled with IPnIP. Verified that: Without this patch, only a single RX ring was processing the traffic. With this patch, multiple RX rings were processing the traffic. Verified with and without GRE offload support. Signed-off-by: Aya Levin Reviewed-by: Tariq Toukan Signed-off-by: Saeed Mahameed Signed-off-by: Alaa Hleihel Signed-off-by: Frantisek Hrbata --- drivers/net/ethernet/mellanox/mlx5/core/en/fs.h | 4 +++ drivers/net/ethernet/mellanox/mlx5/core/en_fs.c | 46 ++++++++++++++++++++++++- 2 files changed, 49 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h b/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h index 5acd982ff228..5aae3a7a5497 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h @@ -95,6 +95,10 @@ struct mlx5e_tirc_config { enum mlx5e_tunnel_types { MLX5E_TT_IPV4_GRE, MLX5E_TT_IPV6_GRE, + MLX5E_TT_IPV4_IPIP, + MLX5E_TT_IPV6_IPIP, + MLX5E_TT_IPV4_IPV6, + MLX5E_TT_IPV6_IPV6, MLX5E_NUM_TUNNEL_TT, }; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c index a8340e4fb0b9..b99b17957543 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c @@ -747,11 +747,52 @@ static struct mlx5e_etype_proto ttc_tunnel_rules[] = { .etype = ETH_P_IPV6, .proto = IPPROTO_GRE, }, + [MLX5E_TT_IPV4_IPIP] = { + .etype = ETH_P_IP, + .proto = IPPROTO_IPIP, + }, + [MLX5E_TT_IPV6_IPIP] = { + .etype = ETH_P_IPV6, + .proto = IPPROTO_IPIP, + }, + [MLX5E_TT_IPV4_IPV6] = { + .etype = ETH_P_IP, + .proto = IPPROTO_IPV6, + }, + [MLX5E_TT_IPV6_IPV6] = { + .etype = ETH_P_IPV6, + .proto = IPPROTO_IPV6, + }, + }; +static bool mlx5e_tunnel_proto_supported(struct mlx5_core_dev *mdev, u8 proto_type) +{ + switch (proto_type) { + case IPPROTO_GRE: + return MLX5_CAP_ETH(mdev, tunnel_stateless_gre); + case IPPROTO_IPIP: + case IPPROTO_IPV6: + return MLX5_CAP_ETH(mdev, tunnel_stateless_ip_over_ip); + default: + return false; + } +} + +static bool mlx5e_any_tunnel_proto_supported(struct mlx5_core_dev *mdev) +{ + int tt; + + for (tt = 0; tt < MLX5E_NUM_TUNNEL_TT; tt++) { + if (mlx5e_tunnel_proto_supported(mdev, ttc_tunnel_rules[tt].proto)) + return true; + } + return false; +} + bool mlx5e_tunnel_inner_ft_supported(struct mlx5_core_dev *mdev) { - return (MLX5_CAP_ETH(mdev, tunnel_stateless_gre) && + return (mlx5e_any_tunnel_proto_supported(mdev) && MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ft_field_support.inner_ip_version)); } @@ -844,6 +885,9 @@ static int mlx5e_generate_ttc_table_rules(struct mlx5e_priv *priv, dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE; dest.ft = params->inner_ttc->ft.t; for (tt = 0; tt < MLX5E_NUM_TUNNEL_TT; tt++) { + if (!mlx5e_tunnel_proto_supported(priv->mdev, + ttc_tunnel_rules[tt].proto)) + continue; rules[tt] = mlx5e_generate_ttc_rule(priv, ft, &dest, ttc_tunnel_rules[tt].etype, ttc_tunnel_rules[tt].proto); -- 2.13.6