summaryrefslogtreecommitdiffstats
path: root/drivers/net/dpaa2/mc/fsl_dpkg.h
blob: 4de70f3077ad6a7c823d3fed1022ed3d6d88a95a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/* 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_ */