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/* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
* Copyright 2013-2015 Freescale Semiconductor Inc.
* Copyright 2016-2017 NXP
*
*/
#ifndef __FSL_DPKG_H_
#define __FSL_DPKG_H_
#include <fsl_net.h>
/* Data Path Key Generator API
* Contains initialization APIs and runtime APIs for the Key Generator
*/
/** Key Generator properties */
/**
* Number of masks per key extraction
*/
#define DPKG_NUM_OF_MASKS 4
/**
* Number of extractions per key profile
*/
#define DPKG_MAX_NUM_OF_EXTRACTS 10
/**
* enum dpkg_extract_from_hdr_type - Selecting extraction by header types
* @DPKG_FROM_HDR: Extract selected bytes from header, by offset
* @DPKG_FROM_FIELD: Extract selected bytes from header, by offset from field
* @DPKG_FULL_FIELD: Extract a full field
*/
enum dpkg_extract_from_hdr_type {
DPKG_FROM_HDR = 0,
DPKG_FROM_FIELD = 1,
DPKG_FULL_FIELD = 2
};
/**
* enum dpkg_extract_type - Enumeration for selecting extraction type
* @DPKG_EXTRACT_FROM_HDR: Extract from the header
* @DPKG_EXTRACT_FROM_DATA: Extract from data not in specific header
* @DPKG_EXTRACT_FROM_PARSE: Extract from parser-result;
* e.g. can be used to extract header existence;
* please refer to 'Parse Result definition' section in the parser BG
*/
enum dpkg_extract_type {
DPKG_EXTRACT_FROM_HDR = 0,
DPKG_EXTRACT_FROM_DATA = 1,
DPKG_EXTRACT_FROM_PARSE = 3
};
/**
* struct dpkg_mask - A structure for defining a single extraction mask
* @mask: Byte mask for the extracted content
* @offset: Offset within the extracted content
*/
struct dpkg_mask {
uint8_t mask;
uint8_t offset;
};
/* Macros for accessing command fields smaller than 1byte */
#define DPKG_MASK(field) \
GENMASK(DPKG_##field##_SHIFT + DPKG_##field##_SIZE - 1, \
DPKG_##field##_SHIFT)
#define dpkg_set_field(var, field, val) \
((var) |= (((val) << DPKG_##field##_SHIFT) & DPKG_MASK(field)))
#define dpkg_get_field(var, field) \
(((var) & DPKG_MASK(field)) >> DPKG_##field##_SHIFT)
/**
* struct dpkg_extract - A structure for defining a single extraction
* @type: Determines how the union below is interpreted:
* DPKG_EXTRACT_FROM_HDR: selects 'from_hdr';
* DPKG_EXTRACT_FROM_DATA: selects 'from_data';
* DPKG_EXTRACT_FROM_PARSE: selects 'from_parse'
* @extract: Selects extraction method
* @num_of_byte_masks: Defines the number of valid entries in the array below;
* This is also the number of bytes to be used as masks
* @masks: Masks parameters
*/
struct dpkg_extract {
enum dpkg_extract_type type;
/**
* union extract - Selects extraction method
* @from_hdr - Used when 'type = DPKG_EXTRACT_FROM_HDR'
* @from_data - Used when 'type = DPKG_EXTRACT_FROM_DATA'
* @from_parse - Used when 'type = DPKG_EXTRACT_FROM_PARSE'
*/
union {
/**
* struct from_hdr - Used when 'type = DPKG_EXTRACT_FROM_HDR'
* @prot: Any of the supported headers
* @type: Defines the type of header extraction:
* DPKG_FROM_HDR: use size & offset below;
* DPKG_FROM_FIELD: use field, size and offset below;
* DPKG_FULL_FIELD: use field below
* @field: One of the supported fields (NH_FLD_)
*
* @size: Size in bytes
* @offset: Byte offset
* @hdr_index: Clear for cases not listed below;
* Used for protocols that may have more than a single
* header, 0 indicates an outer header;
* Supported protocols (possible values):
* NET_PROT_VLAN (0, HDR_INDEX_LAST);
* NET_PROT_MPLS (0, 1, HDR_INDEX_LAST);
* NET_PROT_IP(0, HDR_INDEX_LAST);
* NET_PROT_IPv4(0, HDR_INDEX_LAST);
* NET_PROT_IPv6(0, HDR_INDEX_LAST);
*/
struct {
enum net_prot prot;
enum dpkg_extract_from_hdr_type type;
uint32_t field;
uint8_t size;
uint8_t offset;
uint8_t hdr_index;
} from_hdr;
/**
* struct from_data
* Used when 'type = DPKG_EXTRACT_FROM_DATA'
* @size: Size in bytes
* @offset: Byte offset
*/
struct {
uint8_t size;
uint8_t offset;
} from_data;
/**
* struct from_parse
* Used when 'type = DPKG_EXTRACT_FROM_PARSE'
* @size: Size in bytes
* @offset: Byte offset
*/
struct {
uint8_t size;
uint8_t offset;
} from_parse;
} extract;
uint8_t num_of_byte_masks;
struct dpkg_mask masks[DPKG_NUM_OF_MASKS];
};
/**
* struct dpkg_profile_cfg - A structure for defining a full Key Generation
* profile (rule)
* @num_extracts: Defines the number of valid entries in the array below
* @extracts: Array of required extractions
*/
struct dpkg_profile_cfg {
uint8_t num_extracts;
struct dpkg_extract extracts[DPKG_MAX_NUM_OF_EXTRACTS];
};
/* dpni_set_rx_tc_dist extension (structure of the DMA-able memory at
* key_cfg_iova)
*/
struct dpni_mask_cfg {
uint8_t mask;
uint8_t offset;
};
#define DPKG_EFH_TYPE_SHIFT 0
#define DPKG_EFH_TYPE_SIZE 4
#define DPKG_EXTRACT_TYPE_SHIFT 0
#define DPKG_EXTRACT_TYPE_SIZE 4
struct dpni_dist_extract {
/* word 0 */
uint8_t prot;
/* EFH type stored in the 4 least significant bits */
uint8_t efh_type;
uint8_t size;
uint8_t offset;
uint32_t field;
/* word 1 */
uint8_t hdr_index;
uint8_t constant;
uint8_t num_of_repeats;
uint8_t num_of_byte_masks;
/* Extraction type is stored in the 4 LSBs */
uint8_t extract_type;
uint8_t pad[3];
/* word 2 */
struct dpni_mask_cfg masks[4];
};
struct dpni_ext_set_rx_tc_dist {
/* extension word 0 */
uint8_t num_extracts;
uint8_t pad[7];
/* words 1..25 */
struct dpni_dist_extract extracts[10];
};
int dpkg_prepare_key_cfg(const struct dpkg_profile_cfg *cfg,
uint8_t *key_cfg_buf);
#endif /* __FSL_DPKG_H_ */
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