441 inet6_opt_init(void *extbuf, socklen_t extlen)  in inet6_opt_init()  argument
446 		if (extlen == 0 || (extlen % 8))  in inet6_opt_init()
448 		ext->ip6e_len = (extlen >> 3) - 1;  in inet6_opt_init()
455 inet6_opt_append(void *extbuf, socklen_t extlen, int offset, uint8_t type,  in inet6_opt_append()  argument
492 	if (extlen &&		/* XXX: right? */  in inet6_opt_append()
493 	    (socklen_t)currentlen > extlen)  in inet6_opt_append()
522 inet6_opt_finish(void *extbuf, socklen_t extlen, int offset)  in inet6_opt_finish()  argument
530 		if ((socklen_t)updatelen > extlen || padlen >= 256 + 2)  in inet6_opt_finish()
555 inet6_opt_next(void *extbuf, socklen_t extlen, int offset, uint8_t *typep,  in inet6_opt_next()  argument
562 	if (extlen == 0 || (extlen % 8))  in inet6_opt_next()
564 	lim = (uint8_t *)extbuf + extlen;  in inet6_opt_next()
606 inet6_opt_find(void *extbuf, socklen_t extlen, int offset, uint8_t type,  in inet6_opt_find()  argument
613 	if (extlen == 0 || (extlen % 8))  in inet6_opt_find()
615 	lim = (uint8_t *)extbuf + extlen;  in inet6_opt_find()