38 lines
844 B
C
38 lines
844 B
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <string.h>
|
|
|
|
#define LEN 16
|
|
#define OPT_LEN(len) ((len - 8) >> 3)
|
|
|
|
int main(int argc, char **argv) {
|
|
char extbuf[LEN], cbuf[LEN];
|
|
int extlen;
|
|
uint8_t *len;
|
|
|
|
memset(extbuf, 0, sizeof(extbuf));
|
|
memset(cbuf, 0, sizeof(cbuf));
|
|
len = (uint8_t *)(extbuf + 1);
|
|
|
|
printf("== calculate the needed buffer size if extlen is: %d ==\n",LEN);
|
|
extlen = inet6_opt_init(extbuf, LEN);
|
|
if (extlen != 2) {
|
|
printf("ERROR: return invalid length %d, expect:2 \n", extlen);
|
|
printf("<=====NG=====>\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (*len != OPT_LEN(LEN)) {
|
|
printf("ERROR: the length field of extension header is invalid, length %d, expect:%d \n",
|
|
*len, OPT_LEN(LEN));
|
|
printf("<=====NG=====>\n");
|
|
exit(1);
|
|
}
|
|
|
|
printf("OK\n");
|
|
return 0;
|
|
}
|