1 /*
2 * Copyright (c) 2019 The Linux Foundation. All rights reserved.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for
5 * any purpose with or without fee is hereby granted, provided that the
6 * above copyright notice and this permission notice appear in all
7 * copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
16 * PERFORMANCE OF THIS SOFTWARE.
17 */
18 #ifndef __HAL_FLOW_H
19 #define __HAL_FLOW_H
20
21 #define HAL_SET_FLD_SM(block, field, value) \
22 (((value) << (block ## _ ## field ## _LSB)) & \
23 (block ## _ ## field ## _MASK))
24
25 #define HAL_SET_FLD_MS(block, field, value) \
26 (((value) & (block ## _ ## field ## _MASK)) >> \
27 (block ## _ ## field ## _LSB))
28
29 #define HAL_CLR_FLD(desc, block, field) \
30 do { \
31 uint32_t val; \
32 typeof(desc) desc_ = desc; \
33 val = *((uint32_t *)((uint8_t *)(desc_) + \
34 HAL_OFFSET(block, field))); \
35 val &= ~(block ## _ ## field ## _MASK); \
36 HAL_SET_FLD(desc_, block, field) = val; \
37 } while (0)
38
39 #define HAL_GET_FLD(desc, block, field) \
40 ((*((uint32_t *)((uint8_t *)(desc) + HAL_OFFSET(block, field))) & \
41 (block ## _ ## field ## _MASK)) >> (block ## _ ## field ## _LSB))
42
43 /**
44 * struct hal_flow_tuple_info - Hal Flow 5-tuple
45 * @dest_ip_127_96: Destination IP address bits 96-127
46 * @dest_ip_95_64: Destination IP address bits 64-95
47 * @dest_ip_63_32: Destination IP address bits 32-63
48 * @dest_ip_31_0: Destination IP address bits 0-31
49 * @src_ip_127_96: Source IP address bits 96-127
50 * @src_ip_95_64: Source IP address bits 64-95
51 * @src_ip_63_32: Source IP address bits 32-63
52 * @src_ip_31_0: Source IP address bits 0-31
53 * @dest_port: Destination Port
54 * @src_port: Source Port
55 * @l4_protocol: Layer-4 protocol type (TCP/UDP)
56 */
57 struct hal_flow_tuple_info {
58 uint32_t dest_ip_127_96;
59 uint32_t dest_ip_95_64;
60 uint32_t dest_ip_63_32;
61 uint32_t dest_ip_31_0;
62 uint32_t src_ip_127_96;
63 uint32_t src_ip_95_64;
64 uint32_t src_ip_63_32;
65 uint32_t src_ip_31_0;
66 uint16_t dest_port;
67 uint16_t src_port;
68 uint16_t l4_protocol;
69 };
70
71 /**
72 * key_bitwise_shift_left() - Bitwise left shift (in place) an array of bytes
73 * @key: Pointer to array to key bytes
74 * @len: size of array (number of key bytes)
75 * @shift: number of shift operations to be performed
76 *
77 * Return:
78 */
79 static inline void
key_bitwise_shift_left(uint8_t * key,int len,int shift)80 key_bitwise_shift_left(uint8_t *key, int len, int shift)
81 {
82 int i;
83 int next;
84
85 while (shift--) {
86 for (i = len - 1; i >= 0 ; i--) {
87 if (i > 0)
88 next = (key[i - 1] & 0x80 ? 1 : 0);
89 else
90 next = 0;
91 key[i] = (key[i] << 1) | next;
92 }
93 }
94 }
95
96 /**
97 * key_reverse() - Reverse the key buffer from MSB to LSB
98 * @dest: pointer to the destination key
99 * @src: pointer to the source key which should be shifted
100 * @len: size of key in bytes
101 *
102 * Return:
103 */
104 static inline void
key_reverse(uint8_t * dest,uint8_t * src,int len)105 key_reverse(uint8_t *dest, uint8_t *src, int len)
106 {
107 int i, j;
108
109 for (i = 0, j = len - 1; i < len; i++, j--)
110 dest[i] = src[j];
111 }
112 #endif /* HAL_FLOW_H */
113