43 #define	bufpos(p) ((p) - (uint8_t *)extbuf)
51 inet6_opt_init(void *extbuf, socklen_t extlen)  in inet6_opt_init()  argument
53 	if (extbuf && ((extlen < 0) || (extlen % 8))) {  in inet6_opt_init()
57 	if (extbuf) {  in inet6_opt_init()
58 		*(uint8_t *)extbuf = 0;  in inet6_opt_init()
59 		*((uint8_t *)extbuf + 1) = extlen/8 - 1;  in inet6_opt_init()
71 inet6_opt_append(void *extbuf, socklen_t extlen, int offset, uint8_t type,  in inet6_opt_append()  argument
84 	if (extbuf) {  in inet6_opt_append()
91 		extlen = MIN(extlen, (*((uint8_t *)extbuf + 1) + 1) * 8);  in inet6_opt_append()
102 	if ((endlen > extlen) || !extbuf) {  in inet6_opt_append()
103 		if (extbuf) {  in inet6_opt_append()
110 	p = (uint8_t *)extbuf + offset;  in inet6_opt_append()
143 inet6_opt_finish(void *extbuf, socklen_t extlen, int offset)  in inet6_opt_finish()  argument
148 	if (extbuf) {  in inet6_opt_finish()
155 		extlen = MIN(extlen, (*((uint8_t *)extbuf + 1) + 1) * 8);  in inet6_opt_finish()
162 	if ((offset + padbytes > extlen) || !extbuf) {  in inet6_opt_finish()
163 		if (extbuf) {  in inet6_opt_finish()
170 	p = (uint8_t *)extbuf + offset;  in inet6_opt_finish()
212 inet6_opt_next(void *extbuf, socklen_t extlen, int offset, uint8_t *typep,  in inet6_opt_next()  argument
224 	extlen = MIN(extlen, (*((uint8_t *)extbuf + 1) + 1) * 8);  in inet6_opt_next()
225 	end = (uint8_t *)extbuf + extlen;  in inet6_opt_next()
231 	p = (uint8_t *)extbuf + offset;  in inet6_opt_next()
261 	return ((p - (uint8_t *)extbuf) + 2 + *lenp);  in inet6_opt_next()
273 inet6_opt_find(void *extbuf, socklen_t extlen, int offset, uint8_t type,  in inet6_opt_find()  argument
279 		offset = inet6_opt_next(extbuf, extlen, offset, &newtype, lenp,  in inet6_opt_find()