Annotation of libelwix/inc/elwix/apack.h, revision 1.3
1.2 misho 1: #ifndef __APACK_H
2: #define __APACK_H
3:
4:
5: typedef struct tagRawPacket {
6: size_t r_len;
7: uint8_t *r_buf;
8: uint8_t *r_next;
9: } rpack_t;
10:
1.3 ! misho 11: #define RPACK_INITIALIZER { .r_len = 0, .r_buf = NULL, .r_next = NULL }
1.2 misho 12: #define RPACK_FREE(x) (assert((x)), memset((x), 0, sizeof(rpack_t)))
13: #define RPACK_INIT(x, b, l) do { assert((x)); RPACK_FREE(x); \
14: (x)->r_buf = (b); \
15: (x)->r_len = (l); \
16: (x)->r_next = (x)->r_buf; \
17: } while (0)
18: #define RPACK_SANITY(x) ((x) && (x)->r_buf && (x)->r_next && (x)->r_next >= (x)->r_buf)
19: #define RPACK_LEN(x) (assert((x)), (x)->r_len)
20: #define RPACK_REWIND(x) (assert((x)), (x)->r_next = (x)->r_buf)
21:
22: #define RPACK_SET_16(x, n) do { assert((x)); \
23: *((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \
24: *((uint8_t *) (x) + 0) = *((const uint8_t *) (n) + 0); \
25: } while (0)
26: #define RPACK_SET_24(x, n) do { assert((x)); \
27: *((uint8_t *) (x) + 2) = *((const uint8_t *) (n) + 2); \
28: *((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \
29: *((uint8_t *) (x) + 0) = *((const uint8_t *) (n) + 0); \
30: } while (0)
31: #define RPACK_SET_32(x, n) do { assert((x)); \
32: *((uint8_t *) (x) + 3) = *((const uint8_t *) (n) + 3); \
33: *((uint8_t *) (x) + 2) = *((const uint8_t *) (n) + 2); \
34: *((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \
35: *((uint8_t *) (x) + 0) = *((const uint8_t *) (n) + 0); \
36: } while (0)
37: #define RPACK_SET_64(x, n) do { assert((x)); \
38: *((uint8_t *) (x) + 7) = *((const uint8_t *) (n) + 7); \
39: *((uint8_t *) (x) + 6) = *((const uint8_t *) (n) + 6); \
40: *((uint8_t *) (x) + 5) = *((const uint8_t *) (n) + 5); \
41: *((uint8_t *) (x) + 4) = *((const uint8_t *) (n) + 4); \
42: *((uint8_t *) (x) + 3) = *((const uint8_t *) (n) + 3); \
43: *((uint8_t *) (x) + 2) = *((const uint8_t *) (n) + 2); \
44: *((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \
45: *((uint8_t *) (x) + 0) = *((const uint8_t *) (n) + 0); \
46: } while (0)
47:
48: #define EXTRACT_LE_8(x) (assert((x)), *(x))
49: #define EXTRACT_LE_16(x) (assert((x)), (u_int16_t) ( \
50: (uint16_t) *((const uint8_t *) (x) + 1) << 8 | \
51: (uint16_t) *((const uint8_t *) (x) + 0) \
52: ))
53: #define EXTRACT_LE_24(x) (assert((x)), (u_int32_t) ( \
54: (uint32_t) *((const uint8_t *) (x) + 2) << 16 | \
55: (uint32_t) *((const uint8_t *) (x) + 1) << 8 | \
56: (uint32_t) *((const uint8_t *) (x) + 0) \
57: ))
58: #define EXTRACT_LE_32(x) (assert((x)), (u_int32_t) ( \
59: (uint32_t) *((const uint8_t *) (x) + 3) << 24 | \
60: (uint32_t) *((const uint8_t *) (x) + 2) << 16 | \
61: (uint32_t) *((const uint8_t *) (x) + 1) << 8 | \
62: (uint32_t) *((const uint8_t *) (x) + 0) \
63: ))
64: #define EXTRACT_LE_64(x) (assert((x)), (u_int64_t) ( \
65: (uint64_t) *((const uint8_t *) (x) + 7) << 56 | \
66: (uint64_t) *((const uint8_t *) (x) + 6) << 48 | \
67: (uint64_t) *((const uint8_t *) (x) + 5) << 40 | \
68: (uint64_t) *((const uint8_t *) (x) + 4) << 32 | \
69: (uint64_t) *((const uint8_t *) (x) + 3) << 24 | \
70: (uint64_t) *((const uint8_t *) (x) + 2) << 16 | \
71: (uint64_t) *((const uint8_t *) (x) + 1) << 8 | \
72: (uint64_t) *((const uint8_t *) (x) + 0) \
73: ))
74:
75: #define EXTRACT_BE_8(x) (assert((x)), *(x))
76: #define EXTRACT_BE_16(x) (assert((x)), (u_int16_t) ( \
77: (uint16_t) *((const uint8_t *) (x) + 0) << 8 | \
78: (uint16_t) *((const uint8_t *) (x) + 1) \
79: ))
80: #define EXTRACT_BE_24(x) (assert((x)), (u_int32_t) ( \
81: (uint32_t) *((const uint8_t *) (x) + 0) << 16 | \
82: (uint32_t) *((const uint8_t *) (x) + 1) << 8 | \
83: (uint32_t) *((const uint8_t *) (x) + 2) \
84: ))
85: #define EXTRACT_BE_32(x) (assert((x)), (u_int32_t) ( \
86: (uint32_t) *((const uint8_t *) (x) + 0) << 24 | \
87: (uint32_t) *((const uint8_t *) (x) + 1) << 16 | \
88: (uint32_t) *((const uint8_t *) (x) + 2) << 8 | \
89: (uint32_t) *((const uint8_t *) (x) + 3) \
90: ))
91: #define EXTRACT_BE_64(x) (assert((x)), (u_int64_t) ( \
92: (uint64_t) *((const uint8_t *) (x) + 0) << 56 | \
93: (uint64_t) *((const uint8_t *) (x) + 1) << 48 | \
94: (uint64_t) *((const uint8_t *) (x) + 2) << 40 | \
95: (uint64_t) *((const uint8_t *) (x) + 3) << 32 | \
96: (uint64_t) *((const uint8_t *) (x) + 4) << 24 | \
97: (uint64_t) *((const uint8_t *) (x) + 5) << 16 | \
98: (uint64_t) *((const uint8_t *) (x) + 6) << 8 | \
99: (uint64_t) *((const uint8_t *) (x) + 7) \
100: ))
101:
102:
103: /*
104: * rpack_align_and_reserve() - Align & reserve space
105: *
106: * @rp = raw buffer
107: * @siz = need size
108: * return: NULL error or not enough space, !=NULL next position
109: */
110: uint8_t *rpack_align_and_reserve(rpack_t * __restrict rp, size_t siz);
111:
112: /*
113: * rpack_create() - Allocate & init raw packet structure
114: *
115: * @buf = buffer
116: * @buflen = length of buffer
117: * return: NULL error or !=NULL raw packet, should be freed by rpack_destroy()
118: */
119: rpack_t *rpack_create(void * __restrict buf, size_t buflen);
120: /*
121: * rpack_destroy() - Release & free raw packet structure
122: *
123: * @rp = raw packet
124: * return: none
125: */
126: void rpack_destroy(rpack_t ** __restrict rp);
127:
128: /*
129: * rpack_uint8() - Pack/Unpack 8bit value
130: *
131: * @rp = raw buffer
132: * @n = set value if !=NULL
133: * return: -1 error or get value
134: */
135: uint8_t rpack_uint8(rpack_t * __restrict rp, uint8_t * __restrict n);
136: /*
137: * rpack_uint16() - Pack/Unpack 16bit value
138: *
139: * @rp = raw buffer
140: * @n = set value if !=NULL
141: * return: -1 error or get value
142: */
143: uint16_t rpack_uint16(rpack_t * __restrict rp, uint16_t * __restrict n);
144: /*
145: * rpack_uint24() - Pack/Unpack 24bit value
146: *
147: * @rp = raw buffer
148: * @n = set value if !=NULL
149: * return: -1 error or get value
150: */
151: uint32_t rpack_uint24(rpack_t * __restrict rp, uint32_t * __restrict n);
152: /*
153: * rpack_uint32() - Pack/Unpack 32bit value
154: *
155: * @rp = raw buffer
156: * @n = set value if !=NULL
157: * return: -1 error or get value
158: */
159: uint32_t rpack_uint32(rpack_t * __restrict rp, uint32_t * __restrict n);
160: /*
161: * rpack_uint64() - Pack/Unpack 64bit value
162: *
163: * @rp = raw buffer
164: * @n = set value if !=NULL
165: * return: -1 error or get value
166: */
167: uint64_t rpack_uint64(rpack_t * __restrict rp, uint64_t * __restrict n);
168:
169:
170: #endif
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