/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/* Copyright (c) 2018 Mellanox Technologies. */
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#ifndef __MLX5_EN_TC_CT_H__
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#define __MLX5_EN_TC_CT_H__
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#include <net/pkt_cls.h>
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#include <linux/mlx5/fs.h>
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#include <net/tc_act/tc_ct.h>
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#include "en.h"
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struct mlx5_flow_attr;
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struct mlx5e_tc_mod_hdr_acts;
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struct mlx5_rep_uplink_priv;
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struct mlx5e_tc_flow;
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struct mlx5e_priv;
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struct mlx5_fs_chains;
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struct mlx5_tc_ct_priv;
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struct mlx5_ct_flow;
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struct nf_flowtable;
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struct mlx5_ct_attr {
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u16 zone;
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u16 ct_action;
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struct mlx5_ct_flow *ct_flow;
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struct nf_flowtable *nf_ft;
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u32 ct_labels_id;
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};
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#define zone_to_reg_ct {\
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_2,\
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.moffset = 0,\
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.mlen = 2,\
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.soffset = MLX5_BYTE_OFF(fte_match_param,\
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misc_parameters_2.metadata_reg_c_2) + 2,\
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}
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#define ctstate_to_reg_ct {\
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_2,\
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.moffset = 2,\
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.mlen = 2,\
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.soffset = MLX5_BYTE_OFF(fte_match_param,\
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misc_parameters_2.metadata_reg_c_2),\
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}
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#define mark_to_reg_ct {\
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_3,\
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.moffset = 0,\
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.mlen = 4,\
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.soffset = MLX5_BYTE_OFF(fte_match_param,\
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misc_parameters_2.metadata_reg_c_3),\
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}
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#define labels_to_reg_ct {\
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_4,\
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.moffset = 0,\
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.mlen = 4,\
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.soffset = MLX5_BYTE_OFF(fte_match_param,\
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misc_parameters_2.metadata_reg_c_4),\
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}
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#define fteid_to_reg_ct {\
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_5,\
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.moffset = 0,\
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.mlen = 4,\
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.soffset = MLX5_BYTE_OFF(fte_match_param,\
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misc_parameters_2.metadata_reg_c_5),\
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}
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#define zone_restore_to_reg_ct {\
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_1,\
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.moffset = 0,\
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.mlen = 1,\
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.soffset = MLX5_BYTE_OFF(fte_match_param,\
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misc_parameters_2.metadata_reg_c_1) + 3,\
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}
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#define nic_zone_restore_to_reg_ct {\
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_B,\
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.moffset = 2,\
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.mlen = 1,\
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}
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#define REG_MAPPING_MLEN(reg) (mlx5e_tc_attr_to_reg_mappings[reg].mlen)
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#define REG_MAPPING_MOFFSET(reg) (mlx5e_tc_attr_to_reg_mappings[reg].moffset)
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#define REG_MAPPING_SHIFT(reg) (REG_MAPPING_MOFFSET(reg) * 8)
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#define ZONE_RESTORE_BITS (REG_MAPPING_MLEN(ZONE_RESTORE_TO_REG) * 8)
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#define ZONE_RESTORE_MAX GENMASK(ZONE_RESTORE_BITS - 1, 0)
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#if IS_ENABLED(CONFIG_MLX5_TC_CT)
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struct mlx5_tc_ct_priv *
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mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains,
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struct mod_hdr_tbl *mod_hdr,
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enum mlx5_flow_namespace_type ns_type);
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void
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mlx5_tc_ct_clean(struct mlx5_tc_ct_priv *ct_priv);
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void
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mlx5_tc_ct_match_del(struct mlx5_tc_ct_priv *priv, struct mlx5_ct_attr *ct_attr);
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int
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mlx5_tc_ct_match_add(struct mlx5_tc_ct_priv *priv,
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struct mlx5_flow_spec *spec,
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struct flow_cls_offload *f,
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struct mlx5_ct_attr *ct_attr,
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struct netlink_ext_ack *extack);
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int mlx5_tc_ct_add_no_trk_match(struct mlx5_flow_spec *spec);
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int
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mlx5_tc_ct_parse_action(struct mlx5_tc_ct_priv *priv,
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struct mlx5_flow_attr *attr,
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const struct flow_action_entry *act,
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struct netlink_ext_ack *extack);
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struct mlx5_flow_handle *
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mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv *priv,
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struct mlx5e_tc_flow *flow,
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struct mlx5_flow_spec *spec,
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struct mlx5_flow_attr *attr,
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struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
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void
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mlx5_tc_ct_delete_flow(struct mlx5_tc_ct_priv *priv,
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struct mlx5e_tc_flow *flow,
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struct mlx5_flow_attr *attr);
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bool
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mlx5e_tc_ct_restore_flow(struct mlx5_tc_ct_priv *ct_priv,
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struct sk_buff *skb, u8 zone_restore_id);
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#else /* CONFIG_MLX5_TC_CT */
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static inline struct mlx5_tc_ct_priv *
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mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains,
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struct mod_hdr_tbl *mod_hdr,
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enum mlx5_flow_namespace_type ns_type)
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{
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return NULL;
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}
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static inline void
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mlx5_tc_ct_clean(struct mlx5_tc_ct_priv *ct_priv)
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{
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}
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static inline void
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mlx5_tc_ct_match_del(struct mlx5_tc_ct_priv *priv, struct mlx5_ct_attr *ct_attr) {}
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static inline int
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mlx5_tc_ct_match_add(struct mlx5_tc_ct_priv *priv,
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struct mlx5_flow_spec *spec,
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struct flow_cls_offload *f,
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struct mlx5_ct_attr *ct_attr,
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struct netlink_ext_ack *extack)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(f);
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if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CT))
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return 0;
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NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled.");
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return -EOPNOTSUPP;
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}
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static inline int
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mlx5_tc_ct_add_no_trk_match(struct mlx5_flow_spec *spec)
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{
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return 0;
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}
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static inline int
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mlx5_tc_ct_parse_action(struct mlx5_tc_ct_priv *priv,
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struct mlx5_flow_attr *attr,
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const struct flow_action_entry *act,
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struct netlink_ext_ack *extack)
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{
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NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled.");
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return -EOPNOTSUPP;
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}
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static inline struct mlx5_flow_handle *
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mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv *priv,
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struct mlx5e_tc_flow *flow,
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struct mlx5_flow_spec *spec,
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struct mlx5_flow_attr *attr,
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struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline void
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mlx5_tc_ct_delete_flow(struct mlx5_tc_ct_priv *priv,
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struct mlx5e_tc_flow *flow,
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struct mlx5_flow_attr *attr)
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{
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}
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static inline bool
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mlx5e_tc_ct_restore_flow(struct mlx5_tc_ct_priv *ct_priv,
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struct sk_buff *skb, u8 zone_restore_id)
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{
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if (!zone_restore_id)
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return true;
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return false;
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}
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#endif /* !IS_ENABLED(CONFIG_MLX5_TC_CT) */
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#endif /* __MLX5_EN_TC_CT_H__ */
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