36 #define L2TP_FLAG_LENGTH	0x4000	/* Length */
47 #define L2TP_AVP_HDR_LEN_MASK		0x03ff	/* Length Mask */
251 	"Length is wrong",
266 print_string(netdissect_options *ndo, const u_char *dat, u_int length)  in print_string()  argument
269 	for (i=0; i<length; i++) {  in print_string()
276 print_octets(netdissect_options *ndo, const u_char *dat, u_int length)  in print_octets()  argument
279 	for (i=0; i<length; i++) {  in print_octets()
301 l2tp_msgtype_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_msgtype_print()  argument
303 	if (length < 2) {  in l2tp_msgtype_print()
312 l2tp_result_code_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_result_code_print()  argument
315 	if (length < 2) {  in l2tp_result_code_print()
321 	length -= 2;  in l2tp_result_code_print()
324 	if (length == 0)  in l2tp_result_code_print()
326 	if (length < 2) {  in l2tp_result_code_print()
332 	length -= 2;  in l2tp_result_code_print()
335 	if (length == 0)  in l2tp_result_code_print()
338 	print_string(ndo, dat, length);  in l2tp_result_code_print()
342 l2tp_proto_ver_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_proto_ver_print()  argument
344 	if (length < 2) {  in l2tp_proto_ver_print()
353 l2tp_framing_cap_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_framing_cap_print()  argument
355 	if (length < 4) {  in l2tp_framing_cap_print()
368 l2tp_bearer_cap_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_bearer_cap_print()  argument
370 	if (length < 4) {  in l2tp_bearer_cap_print()
383 l2tp_q931_cc_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_q931_cc_print()  argument
385 	if (length < 3) {  in l2tp_q931_cc_print()
392 	length -= 3;  in l2tp_q931_cc_print()
393 	if (length != 0) {  in l2tp_q931_cc_print()
395 		print_string(ndo, dat, length);  in l2tp_q931_cc_print()
400 l2tp_bearer_type_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_bearer_type_print()  argument
402 	if (length < 4) {  in l2tp_bearer_type_print()
415 l2tp_framing_type_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_framing_type_print()  argument
417 	if (length < 4) {  in l2tp_framing_type_print()
436 l2tp_proxy_auth_type_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_proxy_auth_type_print()  argument
438 	if (length < 2) {  in l2tp_proxy_auth_type_print()
447 l2tp_proxy_auth_id_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_proxy_auth_id_print()  argument
449 	if (length < 2) {  in l2tp_proxy_auth_id_print()
457 l2tp_call_errors_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_call_errors_print()  argument
461 	if (length < 2) {  in l2tp_call_errors_print()
466 	length -= 2;  in l2tp_call_errors_print()
468 	if (length < 4) {  in l2tp_call_errors_print()
472 	val = GET_BE_U_4(dat); dat += 4; length -= 4;  in l2tp_call_errors_print()
475 	if (length < 4) {  in l2tp_call_errors_print()
479 	val = GET_BE_U_4(dat); dat += 4; length -= 4;  in l2tp_call_errors_print()
482 	if (length < 4) {  in l2tp_call_errors_print()
486 	val = GET_BE_U_4(dat); dat += 4; length -= 4;  in l2tp_call_errors_print()
489 	if (length < 4) {  in l2tp_call_errors_print()
493 	val = GET_BE_U_4(dat); dat += 4; length -= 4;  in l2tp_call_errors_print()
496 	if (length < 4) {  in l2tp_call_errors_print()
500 	val = GET_BE_U_4(dat); dat += 4; length -= 4;  in l2tp_call_errors_print()
503 	if (length < 4) {  in l2tp_call_errors_print()
507 	val = GET_BE_U_4(dat); dat += 4; length -= 4;  in l2tp_call_errors_print()
512 l2tp_accm_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_accm_print()  argument
516 	if (length < 2) {  in l2tp_accm_print()
521 	length -= 2;  in l2tp_accm_print()
523 	if (length < 4) {  in l2tp_accm_print()
527 	val = GET_BE_U_4(dat); dat += 4; length -= 4;  in l2tp_accm_print()
530 	if (length < 4) {  in l2tp_accm_print()
534 	val = GET_BE_U_4(dat); dat += 4; length -= 4;  in l2tp_accm_print()
539 l2tp_ppp_discon_cc_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_ppp_discon_cc_print()  argument
541 	if (length < 5) {  in l2tp_ppp_discon_cc_print()
548 	length -= 2;  in l2tp_ppp_discon_cc_print()
552 	length -= 2;  in l2tp_ppp_discon_cc_print()
557 	length--;  in l2tp_ppp_discon_cc_print()
559 	if (length != 0) {  in l2tp_ppp_discon_cc_print()
561 		print_string(ndo, (const u_char *)dat, length);  in l2tp_ppp_discon_cc_print()
566 l2tp_avp_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_avp_print()  argument
573 	/* Flags & Length */  in l2tp_avp_print()
580 	/* If it goes past the end of the remaining length of the packet,  in l2tp_avp_print()
582 	if (len > (u_int)length)  in l2tp_avp_print()
585 	/* If it goes past the end of the remaining length of the captured  in l2tp_avp_print()
591 	 * the length of the captured data; however, we *do* need to  in l2tp_avp_print()
735 l2tp_print(netdissect_options *ndo, const u_char *dat, u_int length)  in l2tp_print()  argument
814 		if (length < l2tp_len) {  in l2tp_print()
815 			ND_PRINT(" Length %u larger than packet", l2tp_len);  in l2tp_print()
818 		length = l2tp_len;  in l2tp_print()
820 	if (length < cnt) {  in l2tp_print()
821 		ND_PRINT(" Length %u smaller than header length", length);  in l2tp_print()
826 			ND_PRINT(" No length");  in l2tp_print()
829 		if (length - cnt == 0) {  in l2tp_print()
835 			while (length - cnt != 0) {  in l2tp_print()
838 				avp_length = l2tp_avp_print(ndo, ptr, length - cnt);  in l2tp_print()
851 		ppp_print(ndo, ptr, length - cnt);  in l2tp_print()