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/*
* drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#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,
MLXSW_AFK_ELEMENT_SMAC,
MLXSW_AFK_ELEMENT_ETHERTYPE,
MLXSW_AFK_ELEMENT_IP_PROTO,
MLXSW_AFK_ELEMENT_SRC_IP4,
MLXSW_AFK_ELEMENT_DST_IP4,
MLXSW_AFK_ELEMENT_SRC_IP6_HI,
MLXSW_AFK_ELEMENT_SRC_IP6_LO,
MLXSW_AFK_ELEMENT_DST_IP6_HI,
MLXSW_AFK_ELEMENT_DST_IP6_LO,
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_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)
/* For the purpose of the driver, define an internal storage scratchpad
* that will be used to store key/mask values. For each defined element type
* define an internal storage geometry.
*/
static const struct mlxsw_afk_element_info mlxsw_afk_element_infos[] = {
MLXSW_AFK_ELEMENT_INFO_U32(SRC_SYS_PORT, 0x00, 16, 16),
MLXSW_AFK_ELEMENT_INFO_BUF(DMAC, 0x04, 6),
MLXSW_AFK_ELEMENT_INFO_BUF(SMAC, 0x0A, 6),
MLXSW_AFK_ELEMENT_INFO_U32(ETHERTYPE, 0x00, 0, 16),
MLXSW_AFK_ELEMENT_INFO_U32(IP_PROTO, 0x10, 0, 8),
MLXSW_AFK_ELEMENT_INFO_U32(VID, 0x10, 8, 12),
MLXSW_AFK_ELEMENT_INFO_U32(PCP, 0x10, 20, 3),
MLXSW_AFK_ELEMENT_INFO_U32(TCP_FLAGS, 0x10, 23, 9),
MLXSW_AFK_ELEMENT_INFO_U32(IP_TTL_, 0x14, 0, 8),
MLXSW_AFK_ELEMENT_INFO_U32(IP_ECN, 0x14, 9, 2),
MLXSW_AFK_ELEMENT_INFO_U32(IP_DSCP, 0x14, 11, 6),
MLXSW_AFK_ELEMENT_INFO_U32(SRC_IP4, 0x18, 0, 32),
MLXSW_AFK_ELEMENT_INFO_U32(DST_IP4, 0x1C, 0, 32),
MLXSW_AFK_ELEMENT_INFO_BUF(SRC_IP6_HI, 0x18, 8),
MLXSW_AFK_ELEMENT_INFO_BUF(SRC_IP6_LO, 0x20, 8),
MLXSW_AFK_ELEMENT_INFO_BUF(DST_IP6_HI, 0x28, 8),
MLXSW_AFK_ELEMENT_INFO_BUF(DST_IP6_LO, 0x30, 8),
MLXSW_AFK_ELEMENT_INFO_U32(DST_L4_PORT, 0x14, 0, 16),
MLXSW_AFK_ELEMENT_INFO_U32(SRC_L4_PORT, 0x14, 16, 16),
};
#define MLXSW_AFK_ELEMENT_STORAGE_SIZE 0x38
struct mlxsw_afk_element_inst { /* element instance in actual block */
const struct mlxsw_afk_element_info *info;
enum mlxsw_afk_element_type type;
struct mlxsw_item item; /* element geometry in block */
};
#define MLXSW_AFK_ELEMENT_INST(_type, _element, _offset, _shift, _size) \
{ \
.info = &mlxsw_afk_element_infos[MLXSW_AFK_ELEMENT_##_element], \
.type = _type, \
.item = { \
.offset = _offset, \
.shift = _shift, \
.size = {.bits = _size}, \
.name = #_element, \
}, \
}
#define MLXSW_AFK_ELEMENT_INST_U32(_element, _offset, _shift, _size) \
MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_U32, \
_element, _offset, _shift, _size)
#define MLXSW_AFK_ELEMENT_INST_BUF(_element, _offset, _size) \
MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_BUF, \
_element, _offset, 0, _size)
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 *mlxsw_afk_create(unsigned int max_blocks,
const struct mlxsw_afk_block *blocks,
unsigned int blocks_count);
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_key_info *key_info,
struct mlxsw_afk_element_values *values,
char *key, char *mask);
#endif
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