/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
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/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */
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#ifndef _MLXSW_CORE_ACL_FLEX_KEYS_H
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#define _MLXSW_CORE_ACL_FLEX_KEYS_H
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#include <linux/types.h>
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#include <linux/bitmap.h>
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#include "item.h"
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enum mlxsw_afk_element {
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MLXSW_AFK_ELEMENT_SRC_SYS_PORT,
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MLXSW_AFK_ELEMENT_DMAC_32_47,
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MLXSW_AFK_ELEMENT_DMAC_0_31,
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MLXSW_AFK_ELEMENT_SMAC_32_47,
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MLXSW_AFK_ELEMENT_SMAC_0_31,
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MLXSW_AFK_ELEMENT_ETHERTYPE,
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MLXSW_AFK_ELEMENT_IP_PROTO,
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MLXSW_AFK_ELEMENT_SRC_IP_96_127,
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MLXSW_AFK_ELEMENT_SRC_IP_64_95,
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MLXSW_AFK_ELEMENT_SRC_IP_32_63,
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MLXSW_AFK_ELEMENT_SRC_IP_0_31,
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MLXSW_AFK_ELEMENT_DST_IP_96_127,
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MLXSW_AFK_ELEMENT_DST_IP_64_95,
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MLXSW_AFK_ELEMENT_DST_IP_32_63,
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MLXSW_AFK_ELEMENT_DST_IP_0_31,
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MLXSW_AFK_ELEMENT_DST_L4_PORT,
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MLXSW_AFK_ELEMENT_SRC_L4_PORT,
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MLXSW_AFK_ELEMENT_VID,
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MLXSW_AFK_ELEMENT_PCP,
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MLXSW_AFK_ELEMENT_TCP_FLAGS,
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MLXSW_AFK_ELEMENT_IP_TTL_,
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MLXSW_AFK_ELEMENT_IP_ECN,
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MLXSW_AFK_ELEMENT_IP_DSCP,
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MLXSW_AFK_ELEMENT_VIRT_ROUTER_8_10,
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MLXSW_AFK_ELEMENT_VIRT_ROUTER_0_7,
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MLXSW_AFK_ELEMENT_MAX,
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};
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enum mlxsw_afk_element_type {
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MLXSW_AFK_ELEMENT_TYPE_U32,
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MLXSW_AFK_ELEMENT_TYPE_BUF,
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};
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struct mlxsw_afk_element_info {
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enum mlxsw_afk_element element; /* element ID */
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enum mlxsw_afk_element_type type;
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struct mlxsw_item item; /* element geometry in internal storage */
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};
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#define MLXSW_AFK_ELEMENT_INFO(_type, _element, _offset, _shift, _size) \
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[MLXSW_AFK_ELEMENT_##_element] = { \
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.element = MLXSW_AFK_ELEMENT_##_element, \
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.type = _type, \
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.item = { \
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.offset = _offset, \
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.shift = _shift, \
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.size = {.bits = _size}, \
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.name = #_element, \
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}, \
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}
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#define MLXSW_AFK_ELEMENT_INFO_U32(_element, _offset, _shift, _size) \
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MLXSW_AFK_ELEMENT_INFO(MLXSW_AFK_ELEMENT_TYPE_U32, \
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_element, _offset, _shift, _size)
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#define MLXSW_AFK_ELEMENT_INFO_BUF(_element, _offset, _size) \
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MLXSW_AFK_ELEMENT_INFO(MLXSW_AFK_ELEMENT_TYPE_BUF, \
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_element, _offset, 0, _size)
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#define MLXSW_AFK_ELEMENT_STORAGE_SIZE 0x40
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struct mlxsw_afk_element_inst { /* element instance in actual block */
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enum mlxsw_afk_element element;
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enum mlxsw_afk_element_type type;
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struct mlxsw_item item; /* element geometry in block */
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int u32_key_diff; /* in case value needs to be adjusted before write
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* this diff is here to handle that
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*/
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bool avoid_size_check;
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};
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#define MLXSW_AFK_ELEMENT_INST(_type, _element, _offset, \
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_shift, _size, _u32_key_diff, _avoid_size_check) \
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{ \
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.element = MLXSW_AFK_ELEMENT_##_element, \
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.type = _type, \
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.item = { \
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.offset = _offset, \
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.shift = _shift, \
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.size = {.bits = _size}, \
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.name = #_element, \
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}, \
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.u32_key_diff = _u32_key_diff, \
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.avoid_size_check = _avoid_size_check, \
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}
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#define MLXSW_AFK_ELEMENT_INST_U32(_element, _offset, _shift, _size) \
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MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_U32, \
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_element, _offset, _shift, _size, 0, false)
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#define MLXSW_AFK_ELEMENT_INST_EXT_U32(_element, _offset, \
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_shift, _size, _key_diff, \
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_avoid_size_check) \
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MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_U32, \
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_element, _offset, _shift, _size, \
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_key_diff, _avoid_size_check)
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#define MLXSW_AFK_ELEMENT_INST_BUF(_element, _offset, _size) \
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MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_BUF, \
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_element, _offset, 0, _size, 0, false)
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struct mlxsw_afk_block {
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u16 encoding; /* block ID */
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struct mlxsw_afk_element_inst *instances;
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unsigned int instances_count;
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};
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#define MLXSW_AFK_BLOCK(_encoding, _instances) \
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{ \
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.encoding = _encoding, \
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.instances = _instances, \
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.instances_count = ARRAY_SIZE(_instances), \
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}
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struct mlxsw_afk_element_usage {
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DECLARE_BITMAP(usage, MLXSW_AFK_ELEMENT_MAX);
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};
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#define mlxsw_afk_element_usage_for_each(element, elusage) \
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for_each_set_bit(element, (elusage)->usage, MLXSW_AFK_ELEMENT_MAX)
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static inline void
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mlxsw_afk_element_usage_add(struct mlxsw_afk_element_usage *elusage,
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enum mlxsw_afk_element element)
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{
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__set_bit(element, elusage->usage);
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}
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static inline void
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mlxsw_afk_element_usage_zero(struct mlxsw_afk_element_usage *elusage)
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{
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bitmap_zero(elusage->usage, MLXSW_AFK_ELEMENT_MAX);
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}
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static inline void
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mlxsw_afk_element_usage_fill(struct mlxsw_afk_element_usage *elusage,
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const enum mlxsw_afk_element *elements,
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unsigned int elements_count)
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{
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int i;
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mlxsw_afk_element_usage_zero(elusage);
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for (i = 0; i < elements_count; i++)
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mlxsw_afk_element_usage_add(elusage, elements[i]);
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}
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static inline bool
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mlxsw_afk_element_usage_subset(struct mlxsw_afk_element_usage *elusage_small,
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struct mlxsw_afk_element_usage *elusage_big)
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{
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int i;
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for (i = 0; i < MLXSW_AFK_ELEMENT_MAX; i++)
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if (test_bit(i, elusage_small->usage) &&
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!test_bit(i, elusage_big->usage))
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return false;
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return true;
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}
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struct mlxsw_afk;
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struct mlxsw_afk_ops {
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const struct mlxsw_afk_block *blocks;
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unsigned int blocks_count;
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void (*encode_block)(char *output, int block_index, char *block);
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void (*clear_block)(char *output, int block_index);
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};
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struct mlxsw_afk *mlxsw_afk_create(unsigned int max_blocks,
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const struct mlxsw_afk_ops *ops);
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void mlxsw_afk_destroy(struct mlxsw_afk *mlxsw_afk);
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struct mlxsw_afk_key_info;
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struct mlxsw_afk_key_info *
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mlxsw_afk_key_info_get(struct mlxsw_afk *mlxsw_afk,
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struct mlxsw_afk_element_usage *elusage);
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void mlxsw_afk_key_info_put(struct mlxsw_afk_key_info *key_info);
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bool mlxsw_afk_key_info_subset(struct mlxsw_afk_key_info *key_info,
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struct mlxsw_afk_element_usage *elusage);
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u16
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mlxsw_afk_key_info_block_encoding_get(const struct mlxsw_afk_key_info *key_info,
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int block_index);
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unsigned int
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mlxsw_afk_key_info_blocks_count_get(const struct mlxsw_afk_key_info *key_info);
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struct mlxsw_afk_element_values {
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struct mlxsw_afk_element_usage elusage;
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struct {
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char key[MLXSW_AFK_ELEMENT_STORAGE_SIZE];
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char mask[MLXSW_AFK_ELEMENT_STORAGE_SIZE];
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} storage;
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};
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void mlxsw_afk_values_add_u32(struct mlxsw_afk_element_values *values,
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enum mlxsw_afk_element element,
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u32 key_value, u32 mask_value);
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void mlxsw_afk_values_add_buf(struct mlxsw_afk_element_values *values,
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enum mlxsw_afk_element element,
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const char *key_value, const char *mask_value,
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unsigned int len);
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void mlxsw_afk_encode(struct mlxsw_afk *mlxsw_afk,
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struct mlxsw_afk_key_info *key_info,
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struct mlxsw_afk_element_values *values,
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char *key, char *mask);
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void mlxsw_afk_clear(struct mlxsw_afk *mlxsw_afk, char *key,
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int block_start, int block_end);
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#endif
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