/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ /* Copyright 2013-2015 Freescale Semiconductor Inc.
*/ #ifndef __FSL_DPKG_H_ #define __FSL_DPKG_H_
#include <linux/types.h>
/* Data Path Key Generator API * Contains initialization APIs and runtime APIs for the Key Generator
*/
/** Key Generator properties */
/** * DPKG_NUM_OF_MASKS - Number of masks per key extraction
*/ #define DPKG_NUM_OF_MASKS 4
/** * DPKG_MAX_NUM_OF_EXTRACTS - 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 {
u8 mask;
u8 offset;
};
/** * 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 * @extract.from_hdr: Used when 'type = DPKG_EXTRACT_FROM_HDR' * @extract.from_data: Used when 'type = DPKG_EXTRACT_FROM_DATA' * @extract.from_parse: Used when 'type = DPKG_EXTRACT_FROM_PARSE' * @extract.from_hdr.prot: Any of the supported headers * @extract.from_hdr.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 * @extract.from_hdr.field: One of the supported fields (NH_FLD_) * @extract.from_hdr.size: Size in bytes * @extract.from_hdr.offset: Byte offset * @extract.from_hdr.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); * @extract.from_data.size: Size in bytes * @extract.from_data.offset: Byte offset * @extract.from_parse.size: Size in bytes * @extract.from_parse.offset: Byte offset * @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 { struct { enum net_prot prot; enum dpkg_extract_from_hdr_type type;
u32 field;
u8 size;
u8 offset;
u8 hdr_index;
} from_hdr; struct {
u8 size;
u8 offset;
} from_data; struct {
u8 size;
u8 offset;
} from_parse;
} extract;
/** * 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 {
u8 num_extracts; struct dpkg_extract extracts[DPKG_MAX_NUM_OF_EXTRACTS];
};
#endif/* __FSL_DPKG_H_ */
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