79 static void *sctp_addto_param(struct sctp_chunk *chunk, int len,
90 static void sctp_control_set_owner_w(struct sctp_chunk *chunk)  in sctp_control_set_owner_w()  argument
92 	struct sctp_association *asoc = chunk->asoc;  in sctp_control_set_owner_w()
93 	struct sk_buff *skb = chunk->skb;  in sctp_control_set_owner_w()
107 int sctp_chunk_iif(const struct sctp_chunk *chunk)  in sctp_chunk_iif()  argument
112 	af = sctp_get_af_specific(ipver2af(ip_hdr(chunk->skb)->version));  in sctp_chunk_iif()
114 		iif = af->skb_iif(chunk->skb);  in sctp_chunk_iif()
137 void  sctp_init_cause(struct sctp_chunk *chunk, __be16 cause_code,  in sctp_init_cause()  argument
147 	chunk->subh.err_hdr = sctp_addto_chunk(chunk, sizeof(sctp_errhdr_t), &err);  in sctp_init_cause()
155 static int sctp_init_cause_fixed(struct sctp_chunk *chunk, __be16 cause_code,  in sctp_init_cause_fixed()  argument
166 	if (skb_tailroom(chunk->skb) < len)  in sctp_init_cause_fixed()
168 	chunk->subh.err_hdr = sctp_addto_chunk_fixed(chunk,  in sctp_init_cause_fixed()
383 				 const struct sctp_chunk *chunk,  in sctp_make_init_ack()  argument
416 	cookie = sctp_pack_cookie(asoc->ep, asoc, chunk, &cookie_len,  in sctp_make_init_ack()
481 	retval->transport = chunk->transport;  in sctp_make_init_ack()
563 				    const struct sctp_chunk *chunk)  in sctp_make_cookie_echo()  argument
588 	if (chunk)  in sctp_make_cookie_echo()
589 		retval->transport = chunk->transport;  in sctp_make_cookie_echo()
614 				   const struct sctp_chunk *chunk)  in sctp_make_cookie_ack()  argument
629 	if (retval && chunk)  in sctp_make_cookie_ack()
630 		retval->transport = chunk->transport;  in sctp_make_cookie_ack()
660 			    const struct sctp_chunk *chunk)  in sctp_make_cwr()  argument
685 	if (chunk)  in sctp_make_cwr()
686 		retval->transport = chunk->transport;  in sctp_make_cwr()
854 				      const struct sctp_chunk *chunk)  in sctp_make_shutdown()  argument
871 	if (chunk)  in sctp_make_shutdown()
872 		retval->transport = chunk->transport;  in sctp_make_shutdown()
878 				     const struct sctp_chunk *chunk)  in sctp_make_shutdown_ack()  argument
893 	if (retval && chunk)  in sctp_make_shutdown_ack()
894 		retval->transport = chunk->transport;  in sctp_make_shutdown_ack()
901 	const struct sctp_chunk *chunk)  in sctp_make_shutdown_complete()  argument
923 	if (retval && chunk)  in sctp_make_shutdown_complete()
924 		retval->transport = chunk->transport;  in sctp_make_shutdown_complete()
933 			      const struct sctp_chunk *chunk,  in sctp_make_abort()  argument
943 		if (chunk && chunk->chunk_hdr &&  in sctp_make_abort()
944 		    chunk->chunk_hdr->type == SCTP_CID_INIT)  in sctp_make_abort()
961 	if (retval && chunk)  in sctp_make_abort()
962 		retval->transport = chunk->transport;  in sctp_make_abort()
970 	const struct sctp_chunk *chunk, __u32 tsn)  in sctp_make_abort_no_data()  argument
975 	retval = sctp_make_abort(asoc, chunk, sizeof(sctp_errhdr_t)  in sctp_make_abort_no_data()
995 	if (chunk)  in sctp_make_abort_no_data()
996 		retval->transport = chunk->transport;  in sctp_make_abort_no_data()
1046 static void *sctp_addto_param(struct sctp_chunk *chunk, int len,  in sctp_addto_param()  argument
1050 	int chunklen = ntohs(chunk->chunk_hdr->length);  in sctp_addto_param()
1052 	target = skb_put(chunk->skb, len);  in sctp_addto_param()
1060 	chunk->chunk_hdr->length = htons(chunklen + len);  in sctp_addto_param()
1061 	chunk->chunk_end = skb_tail_pointer(chunk->skb);  in sctp_addto_param()
1069 	const struct sctp_chunk *chunk,  in sctp_make_abort_violation()  argument
1076 	retval = sctp_make_abort(asoc, chunk, sizeof(sctp_errhdr_t) + paylen  in sctp_make_abort_violation()
1084 	phdr.type = htons(chunk->chunk_hdr->type);  in sctp_make_abort_violation()
1085 	phdr.length = chunk->chunk_hdr->length;  in sctp_make_abort_violation()
1095 	const struct sctp_chunk *chunk,  in sctp_make_violation_paramlen()  argument
1103 	retval = sctp_make_abort(asoc, chunk, payload_len);  in sctp_make_violation_paramlen()
1118 	const struct sctp_chunk *chunk)  in sctp_make_violation_max_retrans()  argument
1124 	retval = sctp_make_abort(asoc, chunk, payload_len);  in sctp_make_violation_max_retrans()
1165 				      const struct sctp_chunk *chunk,  in sctp_make_heartbeat_ack()  argument
1185 	if (chunk)  in sctp_make_heartbeat_ack()
1186 		retval->transport = chunk->transport;  in sctp_make_heartbeat_ack()
1197 	const struct sctp_chunk *chunk,  in sctp_make_op_error_space()  argument
1215 	if (chunk)  in sctp_make_op_error_space()
1216 		retval->transport = chunk->transport;  in sctp_make_op_error_space()
1230 	const struct sctp_chunk *chunk)  in sctp_make_op_error_fixed()  argument
1237 	return sctp_make_op_error_space(asoc, chunk, size);  in sctp_make_op_error_fixed()
1242 				 const struct sctp_chunk *chunk,  in sctp_make_op_error()  argument
1248 	retval = sctp_make_op_error_space(asoc, chunk, paylen + reserve_tail);  in sctp_make_op_error()
1333 	SCTP_DBG_OBJCNT_INC(chunk);  in sctp_chunkify()
1341 void sctp_init_addrs(struct sctp_chunk *chunk, union sctp_addr *src,  in sctp_init_addrs()  argument
1344 	memcpy(&chunk->source, src, sizeof(union sctp_addr));  in sctp_init_addrs()
1345 	memcpy(&chunk->dest, dest, sizeof(union sctp_addr));  in sctp_init_addrs()
1349 const union sctp_addr *sctp_source(const struct sctp_chunk *chunk)  in sctp_source()  argument
1352 	if (chunk->transport) {  in sctp_source()
1353 		return &chunk->transport->ipaddr;  in sctp_source()
1356 		return &chunk->source;  in sctp_source()
1411 	struct sctp_chunk *chunk = _sctp_make_chunk(asoc, type, flags, paylen);  in sctp_make_control()  local
1413 	if (chunk)  in sctp_make_control()
1414 		sctp_control_set_owner_w(chunk);  in sctp_make_control()
1416 	return chunk;  in sctp_make_control()
1420 static void sctp_chunk_destroy(struct sctp_chunk *chunk)  in sctp_chunk_destroy()  argument
1422 	BUG_ON(!list_empty(&chunk->list));  in sctp_chunk_destroy()
1423 	list_del_init(&chunk->transmitted_list);  in sctp_chunk_destroy()
1425 	consume_skb(chunk->skb);  in sctp_chunk_destroy()
1426 	consume_skb(chunk->auth_chunk);  in sctp_chunk_destroy()
1428 	SCTP_DBG_OBJCNT_DEC(chunk);  in sctp_chunk_destroy()
1429 	kmem_cache_free(sctp_chunk_cachep, chunk);  in sctp_chunk_destroy()
1433 void sctp_chunk_free(struct sctp_chunk *chunk)  in sctp_chunk_free()  argument
1436 	if (chunk->msg)  in sctp_chunk_free()
1437 		sctp_datamsg_put(chunk->msg);  in sctp_chunk_free()
1439 	sctp_chunk_put(chunk);  in sctp_chunk_free()
1458 void *sctp_addto_chunk(struct sctp_chunk *chunk, int len, const void *data)  in sctp_addto_chunk()  argument
1462 	int chunklen = ntohs(chunk->chunk_hdr->length);  in sctp_addto_chunk()
1465 	padding = skb_put(chunk->skb, padlen);  in sctp_addto_chunk()
1466 	target = skb_put(chunk->skb, len);  in sctp_addto_chunk()
1472 	chunk->chunk_hdr->length = htons(chunklen + padlen + len);  in sctp_addto_chunk()
1473 	chunk->chunk_end = skb_tail_pointer(chunk->skb);  in sctp_addto_chunk()
1481 static void *sctp_addto_chunk_fixed(struct sctp_chunk *chunk,  in sctp_addto_chunk_fixed()  argument
1484 	if (skb_tailroom(chunk->skb) >= len)  in sctp_addto_chunk_fixed()
1485 		return sctp_addto_chunk(chunk, len, data);  in sctp_addto_chunk_fixed()
1494 int sctp_user_addto_chunk(struct sctp_chunk *chunk, int len,  in sctp_user_addto_chunk()  argument
1501 	target = skb_put(chunk->skb, len);  in sctp_user_addto_chunk()
1509 	chunk->chunk_hdr->length =  in sctp_user_addto_chunk()
1510 		htons(ntohs(chunk->chunk_hdr->length) + len);  in sctp_user_addto_chunk()
1511 	chunk->chunk_end = skb_tail_pointer(chunk->skb);  in sctp_user_addto_chunk()
1519 void sctp_chunk_assign_ssn(struct sctp_chunk *chunk)  in sctp_chunk_assign_ssn()  argument
1527 	if (chunk->has_ssn)  in sctp_chunk_assign_ssn()
1531 	sid = ntohs(chunk->subh.data_hdr->stream);  in sctp_chunk_assign_ssn()
1532 	stream = &chunk->asoc->ssnmap->out;  in sctp_chunk_assign_ssn()
1537 	msg = chunk->msg;  in sctp_chunk_assign_ssn()
1556 void sctp_chunk_assign_tsn(struct sctp_chunk *chunk)  in sctp_chunk_assign_tsn()  argument
1558 	if (!chunk->has_tsn) {  in sctp_chunk_assign_tsn()
1562 		chunk->subh.data_hdr->tsn =  in sctp_chunk_assign_tsn()
1563 			htonl(sctp_association_get_next_tsn(chunk->asoc));  in sctp_chunk_assign_tsn()
1564 		chunk->has_tsn = 1;  in sctp_chunk_assign_tsn()
1570 					struct sctp_chunk *chunk,  in sctp_make_temp_asoc()  argument
1579 	scope = sctp_scope(sctp_source(chunk));  in sctp_make_temp_asoc()
1584 	skb = chunk->skb;  in sctp_make_temp_asoc()
1692 	struct sctp_chunk *chunk, gfp_t gfp,  in sctp_unpack_cookie()  argument
1703 	struct sk_buff *skb = chunk->skb;  in sctp_unpack_cookie()
1713 	bodysize = ntohs(chunk->chunk_hdr->length) - headersize;  in sctp_unpack_cookie()
1720 	len = ntohs(chunk->chunk_hdr->length);  in sctp_unpack_cookie()
1729 	cookie = chunk->subh.cookie_hdr;  in sctp_unpack_cookie()
1761 	if (ntohl(chunk->sctp_hdr->vtag) != bear_cookie->my_vtag) {  in sctp_unpack_cookie()
1766 	if (chunk->sctp_hdr->source != bear_cookie->peer_addr.v4.sin_port ||  in sctp_unpack_cookie()
1767 	    ntohs(chunk->sctp_hdr->dest) != bear_cookie->my_port) {  in sctp_unpack_cookie()
1794 		len = ntohs(chunk->chunk_hdr->length);  in sctp_unpack_cookie()
1795 		*errp = sctp_make_op_error_space(asoc, chunk, len);  in sctp_unpack_cookie()
1811 	scope = sctp_scope(sctp_source(chunk));  in sctp_unpack_cookie()
1819 	retval->peer.port = ntohs(chunk->sctp_hdr->source);  in sctp_unpack_cookie()
1832 		sctp_add_bind_addr(&retval->base.bind_addr, &chunk->dest,  in sctp_unpack_cookie()
1874 				      struct sctp_chunk *chunk,  in sctp_process_missing_param()  argument
1886 		*errp = sctp_make_op_error_space(asoc, chunk, len);  in sctp_process_missing_param()
1902 				      struct sctp_chunk *chunk,  in sctp_process_inv_mandatory()  argument
1908 		*errp = sctp_make_op_error_space(asoc, chunk, 0);  in sctp_process_inv_mandatory()
1919 					const struct sctp_chunk *chunk,  in sctp_process_inv_paramlength()  argument
1929 	*errp = sctp_make_violation_paramlen(asoc, chunk, param);  in sctp_process_inv_paramlength()
1940 				 struct sctp_chunk *chunk,  in sctp_process_hn_param()  argument
1953 	*errp = sctp_make_op_error_space(asoc, chunk, len);  in sctp_process_hn_param()
2055 					    struct sctp_chunk *chunk,  in sctp_process_unk_param()  argument
2074 			*errp = sctp_make_op_error_fixed(asoc, chunk);  in sctp_process_unk_param()
2110 					struct sctp_chunk *chunk,  in sctp_verify_param()  argument
2147 		sctp_process_hn_param(asoc, param, chunk, err_chunk);  in sctp_verify_param()
2168 							chunk, err_chunk);  in sctp_verify_param()
2184 						     chunk, err_chunk);  in sctp_verify_param()
2208 			sctp_process_inv_paramlength(asoc, param.p, chunk,  in sctp_verify_param()
2218 		retval = sctp_process_unk_param(asoc, param, chunk, err_chunk);  in sctp_verify_param()
2227 		     sctp_init_chunk_t *peer_init, struct sctp_chunk *chunk,  in sctp_verify_init()  argument
2242 		return sctp_process_inv_mandatory(asoc, chunk, errp);  in sctp_verify_init()
2256 	if (param.v != (void *)chunk->chunk_end)  in sctp_verify_init()
2257 		return sctp_process_inv_paramlength(asoc, param.p, chunk, errp);  in sctp_verify_init()
2264 						  chunk, errp);  in sctp_verify_init()
2269 					   chunk, errp);  in sctp_verify_init()
2290 int sctp_process_init(struct sctp_association *asoc, struct sctp_chunk *chunk,  in sctp_process_init()  argument
2316 	if (sctp_cmp_addr_exact(sctp_source(chunk), peer_addr))  in sctp_process_init()
2325 					    chunk->sctp_hdr->source, 0);  in sctp_process_init()
2326 			if (sctp_cmp_addr_exact(sctp_source(chunk), &addr))  in sctp_process_init()
2956 static void sctp_add_asconf_response(struct sctp_chunk *chunk, __be32 crr_id,  in sctp_add_asconf_response()  argument
2981 	sctp_addto_chunk(chunk, sizeof(ack_param), &ack_param);  in sctp_add_asconf_response()
2989 	sctp_addto_chunk(chunk, err_param_len, &err_param);  in sctp_add_asconf_response()
2993 		sctp_addto_chunk(chunk, asconf_param_len, asconf_param);  in sctp_add_asconf_response()
3118 			struct sctp_chunk *chunk, bool addr_param_needed,  in sctp_verify_asconf()  argument
3121 	sctp_addip_chunk_t *addip = (sctp_addip_chunk_t *) chunk->chunk_hdr;  in sctp_verify_asconf()
3169 	if (param.v != chunk->chunk_end)  in sctp_verify_asconf()