Return to apack.h CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / libelwix / inc / elwix

new api

    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: 
   11: #define RPACK_FREE(x)		(assert((x)), memset((x), 0, sizeof(rpack_t)))
   12: #define RPACK_INIT(x, b, l)	do { assert((x)); RPACK_FREE(x); \
   13: 					(x)->r_buf = (b); \
   14:        					(x)->r_len = (l); \
   15: 					(x)->r_next = (x)->r_buf; \
   16: 				} while (0)
   17: #define RPACK_SANITY(x)		((x) && (x)->r_buf && (x)->r_next && (x)->r_next >= (x)->r_buf)
   18: 
   19: 
   20: /*
   21:  * rpack_align_and_reserve() - Align & reserve space
   22:  *
   23:  * @rp = raw buffer
   24:  * @siz = need size
   25:  * return: NULL error or not enough space, !=NULL next position
   26:  */
   27: uint8_t *rpack_align_and_reserve(rpack_t * __restrict rp, size_t siz);
   28: 
   29: /*
   30:  * rpack_create() - Allocate & init raw packet structure
   31:  *
   32:  * @buf = buffer
   33:  * @buflen = length of buffer
   34:  * return: NULL error or !=NULL raw packet, should be freed by rpack_destroy()
   35:  */
   36: rpack_t *rpack_create(void * __restrict buf, size_t buflen);
   37: /*
   38:  * rpack_destroy() - Release & free raw packet structure
   39:  *
   40:  * @rp = raw packet
   41:  * return: none
   42:  */
   43: void rpack_destroy(rpack_t ** __restrict rp);
   44: 
   45: /*
   46:  * rpack_uint8() - Pack/Unpack 8bit value
   47:  *
   48:  * @rp = raw buffer
   49:  * @n = set value if !=NULL
   50:  * return: -1 error or get value
   51:  */
   52: uint8_t rpack_uint8(rpack_t * __restrict rp, uint8_t * __restrict n);
   53: 
   54: 
   55: #endif