From d5e6f312b0c92828a91b795274a9fece4b45f953 Mon Sep 17 00:00:00 2001 From: Alaa Hleihel Date: Sun, 10 May 2020 14:52:01 -0400 Subject: [PATCH 037/312] [netdrv] net/mlx5: Create bypass and loopback flow steering namespaces for RDMA RX Message-id: <20200510145245.10054-39-ahleihel@redhat.com> Patchwork-id: 306579 Patchwork-instance: patchwork O-Subject: [RHEL8.3 BZ 1789378 v2 38/82] net/mlx5: Create bypass and loopback flow steering namespaces for RDMA RX 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 e6806e9a63a759e445383915bb9d2ec85a90aebf Author: Mark Zhang Date: Mon Aug 19 14:36:25 2019 +0300 net/mlx5: Create bypass and loopback flow steering namespaces for RDMA RX Use different namespaces for bypass and switchdev loopback because they have different priorities and default table miss action requirement: 1. bypass: with multiple priorities support, and MLX5_FLOW_TABLE_MISS_ACTION_DEF as the default table miss action; 2. switchdev loopback: with single priority support, and MLX5_FLOW_TABLE_MISS_ACTION_SWITCH_DOMAIN as the default table miss action. Signed-off-by: Mark Zhang Reviewed-by: Mark Bloch Signed-off-by: Leon Romanovsky Signed-off-by: Alaa Hleihel Signed-off-by: Frantisek Hrbata --- drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 49 ++++++++++++++++++----- drivers/net/ethernet/mellanox/mlx5/core/rdma.c | 2 +- include/linux/mlx5/fs.h | 3 ++ 3 files changed, 43 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c index 5ebd74d078f2..495396f42153 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c @@ -182,6 +182,26 @@ static struct init_tree_node egress_root_fs = { } }; +#define RDMA_RX_BYPASS_PRIO 0 +#define RDMA_RX_KERNEL_PRIO 1 +static struct init_tree_node rdma_rx_root_fs = { + .type = FS_TYPE_NAMESPACE, + .ar_size = 2, + .children = (struct init_tree_node[]) { + [RDMA_RX_BYPASS_PRIO] = + ADD_PRIO(0, MLX5_BY_PASS_NUM_REGULAR_PRIOS, 0, + FS_CHAINING_CAPS, + ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF, + ADD_MULTIPLE_PRIO(MLX5_BY_PASS_NUM_REGULAR_PRIOS, + BY_PASS_PRIO_NUM_LEVELS))), + [RDMA_RX_KERNEL_PRIO] = + ADD_PRIO(0, MLX5_BY_PASS_NUM_REGULAR_PRIOS + 1, 0, + FS_CHAINING_CAPS, + ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_SWITCH_DOMAIN, + ADD_MULTIPLE_PRIO(1, 1))), + } +}; + enum fs_i_lock_class { FS_LOCK_GRANDPARENT, FS_LOCK_PARENT, @@ -2071,16 +2091,18 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev, if (steering->sniffer_tx_root_ns) return &steering->sniffer_tx_root_ns->ns; return NULL; - case MLX5_FLOW_NAMESPACE_RDMA_RX: - if (steering->rdma_rx_root_ns) - return &steering->rdma_rx_root_ns->ns; - return NULL; default: break; } if (type == MLX5_FLOW_NAMESPACE_EGRESS) { root_ns = steering->egress_root_ns; + } else if (type == MLX5_FLOW_NAMESPACE_RDMA_RX) { + root_ns = steering->rdma_rx_root_ns; + prio = RDMA_RX_BYPASS_PRIO; + } else if (type == MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL) { + root_ns = steering->rdma_rx_root_ns; + prio = RDMA_RX_KERNEL_PRIO; } else { /* Must be NIC RX */ root_ns = steering->root_ns; prio = type; @@ -2511,18 +2533,25 @@ static int init_sniffer_rx_root_ns(struct mlx5_flow_steering *steering) static int init_rdma_rx_root_ns(struct mlx5_flow_steering *steering) { - struct fs_prio *prio; + int err; steering->rdma_rx_root_ns = create_root_ns(steering, FS_FT_RDMA_RX); if (!steering->rdma_rx_root_ns) return -ENOMEM; - steering->rdma_rx_root_ns->ns.def_miss_action = - MLX5_FLOW_TABLE_MISS_ACTION_SWITCH_DOMAIN; + err = init_root_tree(steering, &rdma_rx_root_fs, + &steering->rdma_rx_root_ns->ns.node); + if (err) + goto out_err; - /* Create single prio */ - prio = fs_create_prio(&steering->rdma_rx_root_ns->ns, 0, 1); - return PTR_ERR_OR_ZERO(prio); + set_prio_attrs(steering->rdma_rx_root_ns); + + return 0; + +out_err: + cleanup_root_ns(steering->rdma_rx_root_ns); + steering->rdma_rx_root_ns = NULL; + return err; } static int init_fdb_root_ns(struct mlx5_flow_steering *steering) { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/rdma.c b/drivers/net/ethernet/mellanox/mlx5/core/rdma.c index c43f7dc43cea..0fc7de4aa572 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/rdma.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/rdma.c @@ -48,7 +48,7 @@ static int mlx5_rdma_enable_roce_steering(struct mlx5_core_dev *dev) return -ENOMEM; } - ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_RDMA_RX); + ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL); if (!ns) { mlx5_core_err(dev, "Failed to get RDMA RX namespace"); err = -EOPNOTSUPP; diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h index a008e9b63b78..948cba3389ff 100644 --- a/include/linux/mlx5/fs.h +++ b/include/linux/mlx5/fs.h @@ -75,6 +75,9 @@ enum mlx5_flow_namespace_type { MLX5_FLOW_NAMESPACE_SNIFFER_TX, MLX5_FLOW_NAMESPACE_EGRESS, MLX5_FLOW_NAMESPACE_RDMA_RX, +#ifndef __GENKSYMS__ + MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL, +#endif }; enum { -- 2.13.6