diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/Makefile index 1a16f6d73cbc..5f0be9b36a04 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/Makefile +++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile @@ -35,7 +35,7 @@ mlx5_core-$(CONFIG_MLX5_ESWITCH) += en_rep.o en_tc.o en/tc_tun.o lib/port_tu # # Core extra # -mlx5_core-$(CONFIG_MLX5_ESWITCH) += eswitch.o eswitch_offloads.o ecpf.o +mlx5_core-$(CONFIG_MLX5_ESWITCH) += eswitch.o eswitch_offloads.o ecpf.o rdma.o mlx5_core-$(CONFIG_MLX5_MPFS) += lib/mpfs.o mlx5_core-$(CONFIG_VXLAN) += lib/vxlan.o mlx5_core-$(CONFIG_PTP_1588_CLOCK) += lib/clock.o diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index 6c8a17ca236e..9a1598bca4d1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -37,6 +37,7 @@ #include #include "mlx5_core.h" #include "eswitch.h" +#include "rdma.h" #include "en.h" #include "fs_core.h" #include "lib/devcom.h" @@ -1713,6 +1714,8 @@ int esw_offloads_init(struct mlx5_eswitch *esw, int vf_nvports, esw->host_info.num_vfs = vf_nvports; } + mlx5_rdma_enable_roce(esw->dev); + return 0; err_reps: @@ -1751,6 +1754,7 @@ void esw_offloads_cleanup(struct mlx5_eswitch *esw) num_vfs = esw->dev->priv.sriov.num_vfs; } + mlx5_rdma_disable_roce(esw->dev); esw_offloads_devcom_cleanup(esw); esw_offloads_unload_all_reps(esw, num_vfs); esw_offloads_steering_cleanup(esw); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/rdma.c b/drivers/net/ethernet/mellanox/mlx5/core/rdma.c new file mode 100644 index 000000000000..86f77456f873 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/rdma.c @@ -0,0 +1,182 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* Copyright (c) 2019 Mellanox Technologies */ + +#include +#include +#include + +#include "lib/mlx5.h" +#include "eswitch.h" +#include "fs_core.h" +#include "rdma.h" + +static void mlx5_rdma_disable_roce_steering(struct mlx5_core_dev *dev) +{ + struct mlx5_core_roce *roce = &dev->priv.roce; + + if (!roce->ft) + return; + + mlx5_del_flow_rules(roce->allow_rule); + mlx5_destroy_flow_group(roce->fg); + mlx5_destroy_flow_table(roce->ft); +} + +static int mlx5_rdma_enable_roce_steering(struct mlx5_core_dev *dev) +{ + int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in); + struct mlx5_core_roce *roce = &dev->priv.roce; + struct mlx5_flow_handle *flow_rule = NULL; + struct mlx5_flow_table_attr ft_attr = {}; + struct mlx5_flow_namespace *ns = NULL; + struct mlx5_flow_act flow_act = {}; + struct mlx5_flow_spec *spec; + struct mlx5_flow_table *ft; + struct mlx5_flow_group *fg; + void *match_criteria; + u32 *flow_group_in; + void *misc; + int err; + + if (!(MLX5_CAP_FLOWTABLE_RDMA_RX(dev, ft_support) && + MLX5_CAP_FLOWTABLE_RDMA_RX(dev, table_miss_action_domain))) + return -EOPNOTSUPP; + + flow_group_in = kvzalloc(inlen, GFP_KERNEL); + if (!flow_group_in) + return -ENOMEM; + spec = kvzalloc(sizeof(*spec), GFP_KERNEL); + if (!spec) { + kvfree(flow_group_in); + return -ENOMEM; + } + + ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_RDMA_RX); + if (!ns) { + mlx5_core_err(dev, "Failed to get RDMA RX namespace"); + err = -EOPNOTSUPP; + goto free; + } + + ft_attr.max_fte = 1; + ft = mlx5_create_flow_table(ns, &ft_attr); + if (IS_ERR(ft)) { + mlx5_core_err(dev, "Failed to create RDMA RX flow table"); + err = PTR_ERR(ft); + goto free; + } + + MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable, + MLX5_MATCH_MISC_PARAMETERS); + match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, + match_criteria); + MLX5_SET_TO_ONES(fte_match_param, match_criteria, + misc_parameters.source_port); + + fg = mlx5_create_flow_group(ft, flow_group_in); + if (IS_ERR(fg)) { + err = PTR_ERR(fg); + mlx5_core_err(dev, "Failed to create RDMA RX flow group err(%d)\n", err); + goto destroy_flow_table; + } + + spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS; + misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, + misc_parameters); + MLX5_SET(fte_match_set_misc, misc, source_port, + dev->priv.eswitch->manager_vport); + misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, + misc_parameters); + MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port); + + flow_act.action = MLX5_FLOW_CONTEXT_ACTION_ALLOW; + flow_rule = mlx5_add_flow_rules(ft, spec, &flow_act, NULL, 0); + if (IS_ERR(flow_rule)) { + err = PTR_ERR(flow_rule); + mlx5_core_err(dev, "Failed to add RoCE allow rule, err=%d\n", + err); + goto destroy_flow_group; + } + + kvfree(spec); + kvfree(flow_group_in); + roce->ft = ft; + roce->fg = fg; + roce->allow_rule = flow_rule; + + return 0; + +destroy_flow_table: + mlx5_destroy_flow_table(ft); +destroy_flow_group: + mlx5_destroy_flow_group(fg); +free: + kvfree(spec); + kvfree(flow_group_in); + return err; +} + +static void mlx5_rdma_del_roce_addr(struct mlx5_core_dev *dev) +{ + mlx5_core_roce_gid_set(dev, 0, 0, 0, + NULL, NULL, false, 0, 0); +} + +static void mlx5_rdma_make_default_gid(struct mlx5_core_dev *dev, union ib_gid *gid) +{ + u8 hw_id[ETH_ALEN]; + + mlx5_query_nic_vport_mac_address(dev, 0, hw_id); + gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); + addrconf_addr_eui48(&gid->raw[8], hw_id); +} + +static int mlx5_rdma_add_roce_addr(struct mlx5_core_dev *dev) +{ + union ib_gid gid; + u8 mac[ETH_ALEN]; + + mlx5_rdma_make_default_gid(dev, &gid); + return mlx5_core_roce_gid_set(dev, 0, + MLX5_ROCE_VERSION_1, + 0, gid.raw, mac, + false, 0, 1); +} + +void mlx5_rdma_disable_roce(struct mlx5_core_dev *dev) +{ + mlx5_rdma_disable_roce_steering(dev); + mlx5_rdma_del_roce_addr(dev); + mlx5_nic_vport_disable_roce(dev); +} + +void mlx5_rdma_enable_roce(struct mlx5_core_dev *dev) +{ + int err; + + err = mlx5_nic_vport_enable_roce(dev); + if (err) { + mlx5_core_err(dev, "Failed to enable RoCE: %d\n", err); + return; + } + + err = mlx5_rdma_add_roce_addr(dev); + if (err) { + mlx5_core_err(dev, "Failed to add RoCE address: %d\n", err); + goto disable_roce; + } + + err = mlx5_rdma_enable_roce_steering(dev); + if (err) { + mlx5_core_err(dev, "Failed to enable RoCE steering: %d\n", err); + goto del_roce_addr; + } + + return; + +del_roce_addr: + mlx5_rdma_del_roce_addr(dev); +disable_roce: + mlx5_nic_vport_disable_roce(dev); + return; +} diff --git a/drivers/net/ethernet/mellanox/mlx5/core/rdma.h b/drivers/net/ethernet/mellanox/mlx5/core/rdma.h new file mode 100644 index 000000000000..750cff2a71a4 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/rdma.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* Copyright (c) 2019 Mellanox Technologies. */ + +#ifndef __MLX5_RDMA_H__ +#define __MLX5_RDMA_H__ + +#include "mlx5_core.h" + +#ifdef CONFIG_MLX5_ESWITCH + +void mlx5_rdma_enable_roce(struct mlx5_core_dev *dev); +void mlx5_rdma_disable_roce(struct mlx5_core_dev *dev); + +#else /* CONFIG_MLX5_ESWITCH */ + +static inline void mlx5_rdma_enable_roce(struct mlx5_core_dev *dev) {} +static inline void mlx5_rdma_disable_roce(struct mlx5_core_dev *dev) {} + +#endif /* CONFIG_MLX5_ESWITCH */ +#endif /* __MLX5_RDMA_H__ */ diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 582a9680b182..7fa95270dd59 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -512,6 +512,12 @@ struct mlx5_rl_table { struct mlx5_rl_entry *rl_entry; }; +struct mlx5_core_roce { + struct mlx5_flow_table *ft; + struct mlx5_flow_group *fg; + struct mlx5_flow_handle *allow_rule; +}; + struct mlx5_priv { struct mlx5_eq_table *eq_table; @@ -565,6 +571,7 @@ struct mlx5_priv { struct mlx5_lag *lag; struct mlx5_devcom *devcom; unsigned long pci_dev_data; + struct mlx5_core_roce roce; struct mlx5_fc_stats fc_stats; struct mlx5_rl_table rl_table;