diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h new file mode 100644 index 000000000..3a037fe47 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h @@ -0,0 +1,222 @@ +/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ +/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */ + +#ifndef _MLXSW_CORE_ACL_FLEX_KEYS_H +#define _MLXSW_CORE_ACL_FLEX_KEYS_H + +#include <linux/types.h> +#include <linux/bitmap.h> + +#include "item.h" + +enum mlxsw_afk_element { + MLXSW_AFK_ELEMENT_SRC_SYS_PORT, + MLXSW_AFK_ELEMENT_DMAC_32_47, + MLXSW_AFK_ELEMENT_DMAC_0_31, + MLXSW_AFK_ELEMENT_SMAC_32_47, + MLXSW_AFK_ELEMENT_SMAC_0_31, + MLXSW_AFK_ELEMENT_ETHERTYPE, + MLXSW_AFK_ELEMENT_IP_PROTO, + MLXSW_AFK_ELEMENT_SRC_IP_96_127, + MLXSW_AFK_ELEMENT_SRC_IP_64_95, + MLXSW_AFK_ELEMENT_SRC_IP_32_63, + MLXSW_AFK_ELEMENT_SRC_IP_0_31, + MLXSW_AFK_ELEMENT_DST_IP_96_127, + MLXSW_AFK_ELEMENT_DST_IP_64_95, + MLXSW_AFK_ELEMENT_DST_IP_32_63, + MLXSW_AFK_ELEMENT_DST_IP_0_31, + MLXSW_AFK_ELEMENT_DST_L4_PORT, + MLXSW_AFK_ELEMENT_SRC_L4_PORT, + MLXSW_AFK_ELEMENT_VID, + MLXSW_AFK_ELEMENT_PCP, + MLXSW_AFK_ELEMENT_TCP_FLAGS, + MLXSW_AFK_ELEMENT_IP_TTL_, + MLXSW_AFK_ELEMENT_IP_ECN, + MLXSW_AFK_ELEMENT_IP_DSCP, + MLXSW_AFK_ELEMENT_VIRT_ROUTER_MSB, + MLXSW_AFK_ELEMENT_VIRT_ROUTER_LSB, + MLXSW_AFK_ELEMENT_MAX, +}; + +enum mlxsw_afk_element_type { + MLXSW_AFK_ELEMENT_TYPE_U32, + MLXSW_AFK_ELEMENT_TYPE_BUF, +}; + +struct mlxsw_afk_element_info { + enum mlxsw_afk_element element; /* element ID */ + enum mlxsw_afk_element_type type; + struct mlxsw_item item; /* element geometry in internal storage */ +}; + +#define MLXSW_AFK_ELEMENT_INFO(_type, _element, _offset, _shift, _size) \ + [MLXSW_AFK_ELEMENT_##_element] = { \ + .element = MLXSW_AFK_ELEMENT_##_element, \ + .type = _type, \ + .item = { \ + .offset = _offset, \ + .shift = _shift, \ + .size = {.bits = _size}, \ + .name = #_element, \ + }, \ + } + +#define MLXSW_AFK_ELEMENT_INFO_U32(_element, _offset, _shift, _size) \ + MLXSW_AFK_ELEMENT_INFO(MLXSW_AFK_ELEMENT_TYPE_U32, \ + _element, _offset, _shift, _size) + +#define MLXSW_AFK_ELEMENT_INFO_BUF(_element, _offset, _size) \ + MLXSW_AFK_ELEMENT_INFO(MLXSW_AFK_ELEMENT_TYPE_BUF, \ + _element, _offset, 0, _size) + +#define MLXSW_AFK_ELEMENT_STORAGE_SIZE 0x40 + +struct mlxsw_afk_element_inst { /* element instance in actual block */ + enum mlxsw_afk_element element; + enum mlxsw_afk_element_type type; + struct mlxsw_item item; /* element geometry in block */ + int u32_key_diff; /* in case value needs to be adjusted before write + * this diff is here to handle that + */ + bool avoid_size_check; +}; + +#define MLXSW_AFK_ELEMENT_INST(_type, _element, _offset, \ + _shift, _size, _u32_key_diff, _avoid_size_check) \ + { \ + .element = MLXSW_AFK_ELEMENT_##_element, \ + .type = _type, \ + .item = { \ + .offset = _offset, \ + .shift = _shift, \ + .size = {.bits = _size}, \ + .name = #_element, \ + }, \ + .u32_key_diff = _u32_key_diff, \ + .avoid_size_check = _avoid_size_check, \ + } + +#define MLXSW_AFK_ELEMENT_INST_U32(_element, _offset, _shift, _size) \ + MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_U32, \ + _element, _offset, _shift, _size, 0, false) + +#define MLXSW_AFK_ELEMENT_INST_EXT_U32(_element, _offset, \ + _shift, _size, _key_diff, \ + _avoid_size_check) \ + MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_U32, \ + _element, _offset, _shift, _size, \ + _key_diff, _avoid_size_check) + +#define MLXSW_AFK_ELEMENT_INST_BUF(_element, _offset, _size) \ + MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_BUF, \ + _element, _offset, 0, _size, 0, false) + +struct mlxsw_afk_block { + u16 encoding; /* block ID */ + struct mlxsw_afk_element_inst *instances; + unsigned int instances_count; +}; + +#define MLXSW_AFK_BLOCK(_encoding, _instances) \ + { \ + .encoding = _encoding, \ + .instances = _instances, \ + .instances_count = ARRAY_SIZE(_instances), \ + } + +struct mlxsw_afk_element_usage { + DECLARE_BITMAP(usage, MLXSW_AFK_ELEMENT_MAX); +}; + +#define mlxsw_afk_element_usage_for_each(element, elusage) \ + for_each_set_bit(element, (elusage)->usage, MLXSW_AFK_ELEMENT_MAX) + +static inline void +mlxsw_afk_element_usage_add(struct mlxsw_afk_element_usage *elusage, + enum mlxsw_afk_element element) +{ + __set_bit(element, elusage->usage); +} + +static inline void +mlxsw_afk_element_usage_zero(struct mlxsw_afk_element_usage *elusage) +{ + bitmap_zero(elusage->usage, MLXSW_AFK_ELEMENT_MAX); +} + +static inline void +mlxsw_afk_element_usage_fill(struct mlxsw_afk_element_usage *elusage, + const enum mlxsw_afk_element *elements, + unsigned int elements_count) +{ + int i; + + mlxsw_afk_element_usage_zero(elusage); + for (i = 0; i < elements_count; i++) + mlxsw_afk_element_usage_add(elusage, elements[i]); +} + +static inline bool +mlxsw_afk_element_usage_subset(struct mlxsw_afk_element_usage *elusage_small, + struct mlxsw_afk_element_usage *elusage_big) +{ + int i; + + for (i = 0; i < MLXSW_AFK_ELEMENT_MAX; i++) + if (test_bit(i, elusage_small->usage) && + !test_bit(i, elusage_big->usage)) + return false; + return true; +} + +struct mlxsw_afk; + +struct mlxsw_afk_ops { + const struct mlxsw_afk_block *blocks; + unsigned int blocks_count; + void (*encode_block)(char *output, int block_index, char *block); + void (*clear_block)(char *output, int block_index); +}; + +struct mlxsw_afk *mlxsw_afk_create(unsigned int max_blocks, + const struct mlxsw_afk_ops *ops); +void mlxsw_afk_destroy(struct mlxsw_afk *mlxsw_afk); + +struct mlxsw_afk_key_info; + +struct mlxsw_afk_key_info * +mlxsw_afk_key_info_get(struct mlxsw_afk *mlxsw_afk, + struct mlxsw_afk_element_usage *elusage); +void mlxsw_afk_key_info_put(struct mlxsw_afk_key_info *key_info); +bool mlxsw_afk_key_info_subset(struct mlxsw_afk_key_info *key_info, + struct mlxsw_afk_element_usage *elusage); + +u16 +mlxsw_afk_key_info_block_encoding_get(const struct mlxsw_afk_key_info *key_info, + int block_index); +unsigned int +mlxsw_afk_key_info_blocks_count_get(const struct mlxsw_afk_key_info *key_info); + +struct mlxsw_afk_element_values { + struct mlxsw_afk_element_usage elusage; + struct { + char key[MLXSW_AFK_ELEMENT_STORAGE_SIZE]; + char mask[MLXSW_AFK_ELEMENT_STORAGE_SIZE]; + } storage; +}; + +void mlxsw_afk_values_add_u32(struct mlxsw_afk_element_values *values, + enum mlxsw_afk_element element, + u32 key_value, u32 mask_value); +void mlxsw_afk_values_add_buf(struct mlxsw_afk_element_values *values, + enum mlxsw_afk_element element, + const char *key_value, const char *mask_value, + unsigned int len); +void mlxsw_afk_encode(struct mlxsw_afk *mlxsw_afk, + struct mlxsw_afk_key_info *key_info, + struct mlxsw_afk_element_values *values, + char *key, char *mask); +void mlxsw_afk_clear(struct mlxsw_afk *mlxsw_afk, char *key, + int block_start, int block_end); + +#endif |