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packet-tcp.h
1/* packet-tcp.h
2 *
3 * Wireshark - Network traffic analyzer
4 * By Gerald Combs <gerald@wireshark.org>
5 * Copyright 1998 Gerald Combs
6 *
7 * SPDX-License-Identifier: GPL-2.0-or-later
8 */
9
10#ifndef __PACKET_TCP_H__
11#define __PACKET_TCP_H__
12
13#include "ws_symbol_export.h"
14
15#include <epan/conversation.h>
16#include <epan/reassemble.h>
17#include <epan/wmem_scopes.h>
18
19#ifdef __cplusplus
20 extern "C" {
21#endif /* __cplusplus */
22
23/* TCP flags */
24#define TH_FIN 0x001
25#define TH_SYN 0x002
26#define TH_RST 0x004
27#define TH_PUSH 0x008
28#define TH_ACK 0x010
29#define TH_URG 0x020
30#define TH_ECE 0x040
31#define TH_CWR 0x080
32#define TH_AE 0x100
33#define TH_RES 0xE00 /* 3 reserved bits */
34#define TH_MASK 0x0FFF
35
36#define IS_TH_FIN(x) (x & TH_FIN)
37#define IS_TH_URG(x) (x & TH_URG)
38
39/* Idea for gt: either x > y, or y is much bigger (assume wrap) */
40#define GT_SEQ(x, y) ((int32_t)((y) - (x)) < 0)
41#define LT_SEQ(x, y) ((int32_t)((x) - (y)) < 0)
42#define GE_SEQ(x, y) ((int32_t)((y) - (x)) <= 0)
43#define LE_SEQ(x, y) ((int32_t)((x) - (y)) <= 0)
44#define EQ_SEQ(x, y) (x) == (y)
45
46/* Stop counting over 100 isolated parts, although it could technically reach 2^31 */
47#define MAX_CONTIGUOUS_SEQUENCES 100
48
49/* mh as in mptcp header */
50 struct mptcpheader {
51
52 bool mh_mpc; /* true if seen an mp_capable option */
53 bool mh_join; /* true if seen an mp_join option */
54 bool mh_dss; /* true if seen a dss */
55 bool mh_add; /* true if seen an MP_ADD */
56 bool mh_remove; /* true if seen an MP_REMOVE */
57 bool mh_prio; /* true if seen an MP_PRIO */
58 bool mh_fail; /* true if seen an MP_FAIL */
59 bool mh_fastclose; /* true if seen a fastclose */
60 bool mh_tcprst; /* true if seen a MP_TCPRST */
61
62 uint8_t mh_capable_flags; /* to get hmac version for instance */
63 uint8_t mh_dss_flags; /* data sequence signal flag */
64 uint32_t mh_dss_ssn; /* DSS Subflow Sequence Number */
65 uint64_t mh_dss_rawdsn; /* DSS Data Sequence Number */
66 uint64_t mh_dss_rawack; /* DSS raw data ack */
67 uint16_t mh_dss_length; /* mapping/DSS length */
68
69 uint64_t mh_key; /* Sender key in MP_CAPABLE */
70 uint32_t mh_token; /* seen in MP_JOIN. Should be a hash of the initial key */
71
72 uint32_t mh_stream; /* this stream index field is included to help differentiate when address/port pairs are reused */
73
74 /* Data Sequence Number of the current segment. It needs to be computed from previous mappings
75 * and as such is not necessarily set
76 */
77 uint64_t mh_rawdsn64;
78 /* DSN formatted according to the wireshark MPTCP options */
79 uint64_t mh_dsn;
80};
81
82/* the tcp header structure, passed to tap listeners */
83 typedef struct tcpheader {
84 uint32_t th_rawseq; /* raw value */
85 uint32_t th_seq; /* raw or relative value depending on tcp_relative_seq */
86
87 uint32_t th_rawack; /* raw value */
88 uint32_t th_ack; /* raw or relative value depending on tcp_relative_seq */
89 bool flagkarn; /* XXX - might later become a bit field */
90
91 /* This is the absolute maximum we could find in TCP options (RFC2018, section 3) */
92 #define MAX_TCP_SACK_RANGES 4
93 uint8_t num_sack_ranges;
94 bool th_have_seglen; /* true if th_seglen is valid */
95 uint32_t th_seglen; /* in bytes */
96 uint32_t th_win; /* make it 32 bits so we can handle some scaling */
97 uint16_t th_sport;
98 uint16_t th_dport;
99 uint8_t th_hlen;
100 bool th_use_ace;
101 uint16_t th_flags;
102 uint32_t th_stream; /* this stream index field is included to help differentiate when address/port pairs are reused */
103 address ip_src;
104 address ip_dst;
105 uint32_t sack_left_edge[MAX_TCP_SACK_RANGES];
106 uint32_t sack_right_edge[MAX_TCP_SACK_RANGES];
107
108 /* header for TCP option Multipath Operation */
109 struct mptcpheader *th_mptcp;
110} tcp_info_t;
111
112/*
113 * Private data passed from the TCP dissector to subdissectors.
114 * NOTE: This structure is used by Export PDU functionality so
115 * make sure that handling is also updated if this structure
116 * changes!
117 */
118 struct tcpinfo {
119 uint32_t seq; /* Sequence number of first byte in the data */
120 uint32_t nxtseq; /* Sequence number of first byte after data */
121 uint32_t lastackseq; /* Sequence number of last ack */
122 uint16_t flags; /* TCP flags */
123 uint16_t urgent_pointer; /* Urgent pointer value for the current packet. */
124 uint32_t stream; /* Stream id passed to export PDU */
125 bool is_reassembled; /* This is reassembled data. */
126};
127
128/*
129 * Loop for dissecting PDUs within a TCP stream; assumes that a PDU
130 * consists of a fixed-length chunk of data that contains enough information
131 * to determine the length of the PDU, followed by rest of the PDU.
132 *
133 * The first three arguments are the arguments passed to the dissector
134 * that calls this routine.
135 *
136 * "proto_desegment" is the dissector's flag controlling whether it should
137 * desegment PDUs that cross TCP segment boundaries.
138 *
139 * "fixed_len" is the length of the fixed-length part of the PDU.
140 *
141 * "get_pdu_len()" is a routine called to get the length of the PDU from
142 * the fixed-length part of the PDU; it's passed "pinfo", "tvb", "offset" and
143 * "dissector_data".
144 *
145 * "dissect_pdu()" is the routine to dissect a PDU.
146 */
147WS_DLL_PUBLIC void
148tcp_dissect_pdus(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
149 bool proto_desegment, unsigned fixed_len,
150 unsigned (*get_pdu_len)(packet_info *, tvbuff_t *, int, void*),
151 dissector_t dissect_pdu, void* dissector_data);
152
153 extern const reassembly_table_functions
154tcp_reassembly_table_functions;
155
156 extern struct tcp_multisegment_pdu *
157pdu_store_sequencenumber_of_next_pdu(packet_info *pinfo, uint32_t seq, uint32_t nxtpdu, wmem_tree_t *multisegment_pdus);
158
159 typedef struct _tcp_unacked_t {
160 struct _tcp_unacked_t *next;
161 uint32_t frame;
162 uint32_t seq;
163 uint32_t nextseq;
164 bool karn_flag; /* indication for the later Karn discovery */
165 nstime_t ts;
166} tcp_unacked_t;
167
168 struct tcp_acked {
169 uint32_t frame_acked;
170 uint32_t rto_frame;
171 nstime_t ts;
172
173 nstime_t rto_ts; /* Time since previous packet for
174 retransmissions. */
175 uint16_t flags; /* see TCP_A_* in packet-tcp.c */
176 bool partial_ack; /* true when acknowledging data
177 and not a full segment */
178 bool iskarn; /* true when this ACK is ambiguous according to Karn */
179 uint32_t dupack_num; /* dup ack number */
180 uint32_t dupack_frame; /* dup ack to frame # */
181 uint32_t bytes_in_flight; /* number of bytes in flight */
182 uint32_t push_bytes_sent; /* bytes since the last PSH flag */
183
184 uint32_t new_data_seq; /* For segments with old data,
185 where new data starts */
186};
187
188/* One instance of this structure is created for each pdu that spans across
189 * multiple tcp segments.
190 */
191 struct tcp_multisegment_pdu {
192 uint32_t seq;
193 uint32_t nxtpdu;
194 uint32_t first_frame; /* The frame where this MSP was created (used as key in reassembly tables). */
195 uint32_t last_frame;
196 nstime_t last_frame_time;
197 uint32_t first_frame_with_seq; /* The frame that contains the first frame that matches 'seq'
198 (same as 'first_frame', larger than 'first_frame' for OoO segments) */
199 uint32_t flags;
200#define MSP_FLAGS_REASSEMBLE_ENTIRE_SEGMENT 0x00000001
201/* Whether this MSP is finished and no more segments can be added. */
202#define MSP_FLAGS_GOT_ALL_SEGMENTS 0x00000002
203/* Whether the first segment of this MSP was not yet seen. */
204#define MSP_FLAGS_MISSING_FIRST_SEGMENT 0x00000004
205};
206
207
208/* Represents the MPTCP DSS option mapping part
209 It allows to map relative subflow sequence number (ssn) to global MPTCP sequence numbers
210 under their 64 bits form
211*/
212 typedef struct _mptcp_dss_mapping_t {
213
214/* In DSS, SSN are enumerated with relative seq_nb, i.e. starting from 0 */
215
216 uint32_t ssn_low;
217 uint32_t ssn_high;
218
219 uint64_t rawdsn; /* matches the low member of range
220 should be converted to the 64 bits version before being registered
221 */
222 /* to check if mapping was sent before or after packet */
223 uint32_t frame;
224 /* Ideally the dsn should always be registered with the extended version
225 * but it may not be possible if we don't know the 32 MSB of the base_dsn
226 */
227 bool extended_dsn; /* true if MPTCP_DSS_FLAG_DATA_8BYTES */
228} mptcp_dss_mapping_t;
229
230
231/* Structure used in mptcp meta member 'dsn_map'
232 */
233 typedef struct _mptcp_dsn2packet_mapping_t {
234 uint32_t frame; /* packet to look into PINFO_FD_NUM */
235 struct tcp_analysis* subflow; /* in order to get statistics */
236} mptcp_dsn2packet_mapping_t;
237
238
239/* Should basically look like a_tcp_flow_t but for mptcp with 64bit sequence number.
240 The meta is specific to a direction of the communication and aggregates information of
241 all the subflows
242*/
243 typedef struct _mptcp_meta_flow_t {
244
245 uint8_t static_flags; /* remember which fields are set */
246
247 /* flags exchanged between hosts during 3WHS. Gives checksum/extensibility/hmac information */
248 uint8_t flags;
249 uint8_t version; /* negotiated mptcp version */
250 uint64_t base_dsn; /* first data seq number (used by relative sequence numbers) seen. */
251 uint64_t nextseq; /* highest seen nextseq */
252 uint64_t dfin; /* data fin */
253
254 uint64_t key; /* if it was set */
255
256 /* expected token sha1 digest of keys, truncated to 32 most significant bits
257 derived from key. Stored to speed up subflow/MPTCP connection mapping */
258 uint32_t token;
259
260 uint32_t nextseqframe; /* frame number for segment with highest sequence number */
261
262 /* highest seen continuous seq number (without hole in the stream) */
263 uint64_t maxseqtobeacked;
264
265 uint64_t fin; /* frame number of the final dataFIN */
266
267 /* first addresses registered */
268 address ip_src;
269 address ip_dst;
270 uint32_t sport;
271 uint32_t dport;
272} mptcp_meta_flow_t;
273
274/* MPTCP data specific to this subflow direction */
275 struct mptcp_subflow {
276 /* map DSN to packets
277 * Used when looking for reinjections across subflows
278 */
279 wmem_itree_t *dsn2packet_map;
280
281 /* Map SSN to a DSS mappings
282 * a DSS can map DSN to SSNs possibly over several packets,
283 * hence some packets may have been mapped by previous DSS,
284 * whence the necessity to be able to look for SSN -> DSN */
285 wmem_itree_t *ssn2dsn_mappings;
286 /* meta flow to which it is attached. Helps setting forward and backward meta flow */
287 mptcp_meta_flow_t *meta;
288 uint32_t nonce; /* used only for MP_JOIN */
289 uint8_t static_flags; /* flags stating which of the flow */
290 uint8_t address_id; /* sent during an MP_JOIN */
291};
292
293
294 typedef enum {
295 MPTCP_HMAC_NOT_SET = 0,
296 /* this is either SHA1 for MPTCP v0 or sha256 for MPTCP v1 */
297 MPTCP_HMAC_SHA = 1,
298 MPTCP_HMAC_LAST
299} mptcp_hmac_algorithm_t;
300
301
302#define MPTCP_CAPABLE_CRYPTO_MASK 0x3F
303
304#define MPTCP_CHECKSUM_MASK 0x80
305
306/* Information in a flow that is only used when tcp_analyze_seq preference
307 * is enabled, so save the memory when it isn't
308 */
309 typedef struct tcp_analyze_seq_flow_info_t {
310 tcp_unacked_t *segments;/* List of segments for which we haven't seen an ACK */
311 uint16_t segment_count; /* How many unacked segments we're currently storing */
312 uint8_t lastacklen; /* length of the last fwd ACK packet - 0 means pure ACK */
313
314 bool valid_bif; /* if lost pkts, disable BiF until ACK is recvd */
315 bool push_set_last; /* tracking last time PSH flag was set */
316
317 /*
318 * Handling of contiguous SEQ ranges
319 */
320 bool is_client; /* tracking who initiated the conversation */
321 uint8_t num_contiguous_ranges;
322
323 /*
324 * Handling of SACK blocks
325 * Copied from tcpheader
326 */
327 uint8_t num_sack_ranges;
328 nstime_t lastacktime; /* Time of the last ack packet */
329 uint32_t lastack; /* Last seen ack for the reverse flow */
330 uint32_t lastnondupack; /* frame number of last seen non dupack */
331 uint32_t dupacknum; /* dupack number */
332 uint32_t nextseq; /* highest seen nextseq */
333 uint32_t maxseqtobeacked;/* highest seen continuous seq number (without hole in the stream) from the fwd party,
334 * this is the maximum seq number that can be acked by the rev party in normal case.
335 * If the rev party sends an ACK beyond this seq number it indicates TCP_A_ACK_LOST_PACKET condition */
336 uint32_t nextseqframe; /* frame number for segment with highest
337 * sequence number
338 */
339 uint32_t push_bytes_sent; /* bytes since the last PSH flag */
340 nstime_t nextseqtime; /* Time of the nextseq packet so we can
341 * distinguish between retransmission,
342 * fast retransmissions and outoforder
343 */
344
345 uint32_t sack_left_edge[MAX_TCP_SACK_RANGES];
346 uint32_t sack_right_edge[MAX_TCP_SACK_RANGES];
347 uint32_t contiguous_ranges[MAX_CONTIGUOUS_SEQUENCES][2];
348
349} tcp_analyze_seq_flow_info_t;
350
351 /* Process info, currently discovered via IPFIX */
352 typedef struct tcp_process_info_t {
353 uint32_t process_uid; /* UID of local process */
354 uint32_t process_pid; /* PID of local process */
355 char *username; /* Username of the local process */
356 char *command; /* Local process name + path + args */
357
358} tcp_process_info_t;
359
360 typedef struct _tcp_flow_t {
361 uint32_t base_seq; /* base seq number (used by relative sequence numbers)*/
362#define TCP_MAX_UNACKED_SEGMENTS 10000 /* The most unacked segments we'll store */
363 uint32_t fin; /* frame number of the final FIN */
364 uint32_t window; /* last seen window */
365 int16_t win_scale; /* -1 is we don't know, -2 is window scaling is not used */
366 int16_t mss; /* maximum segment size, -1 unknown */
367 bool scps_capable; /* flow advertised scps capabilities */
368 uint8_t static_flags; /* true if base seq set */
369 uint16_t maxsizeacked; /* 0 if not yet known */
370/* This tcp flow/session contains only one single PDU and should
371 * be reassembled until the final FIN segment.
372 */
373#define TCP_FLOW_REASSEMBLE_UNTIL_FIN 0x0001
374 uint16_t flags;
375
376 /* The number of data flows seen in that direction */
377 uint16_t flow_count;
378 uint8_t mp_operations; /* tracking of the MPTCP operations */
379 bool is_first_ack; /* indicates if this is the first ACK */
380 bool closing_initiator; /* tracking who is responsible of the connection end */
381 tcp_analyze_seq_flow_info_t* tcp_analyze_seq_info;
382
383 /* see TCP_A_* in packet-tcp.c */
384 uint32_t lastsegmentflags;
385
386 /* The next (largest) sequence number after all segments seen so far.
387 * Valid only on the first pass and used to handle out-of-order segments
388 * during reassembly. */
389 uint32_t maxnextseq;
390
391 /* This tree is indexed by sequence number and keeps track of all
392 * all pdus spanning multiple segments for this flow.
393 */
394 wmem_tree_t *multisegment_pdus;
395
396 /* A sorted list of pending out-of-order segments. */
397 wmem_list_t *ooo_segments;
398
399 /* Process info, currently discovered via IPFIX */
400 tcp_process_info_t* process_info;
401
402 /* MPTCP subflow intel */
403 struct mptcp_subflow *mptcp_subflow;
404} tcp_flow_t;
405
406/* Stores common information between both hosts of the MPTCP connection*/
407 struct mptcp_analysis {
408
409 uint16_t mp_flags; /* MPTCP meta analysis related, see MPTCP_META_* in packet-tcp.c */
410 uint8_t hmac_algo; /* hmac decided after negotiation */
411 /* Keep track of the last TCP operations seen in order to avoid false DUP ACKs */
412 uint8_t mp_operations;
413 uint32_t stream; /* Keep track of unique mptcp stream (per MP_CAPABLE handshake) */
414 wmem_list_t* subflows; /* List of subflows (tcp_analysis) */
415
416 /* identifier of the tcp stream that saw the initial 3WHS with MP_CAPABLE option */
417 struct tcp_analysis *master;
418
419 /*
420 * For other subflows, they link the meta via mptcp_subflow_t::meta_flow
421 * according to the validity of the token.
422 */
423 mptcp_meta_flow_t meta_flow[2];
424};
425
426 struct tcp_analysis {
427 /* These two structs are managed based on comparing the source
428 * and destination addresses and, if they're equal, comparing
429 * the source and destination ports.
430 *
431 * If the source is greater than the destination, then stuff
432 * sent from src is in flow1.
433 *
434 * If the source is less than the destination, then stuff
435 * sent from src is in flow2.
436 *
437 * XXX - if the addresses and ports are equal, we don't guarantee
438 * the behavior.
439 */
440 tcp_flow_t flow1;
441 tcp_flow_t flow2;
442
443 /* These pointers are set by get_tcp_conversation_data()
444 * fwd point in the same direction as the current packet
445 * and rev in the reverse direction
446 */
447 tcp_flow_t *fwd;
448 tcp_flow_t *rev;
449
450 /* This pointer is NULL or points to a tcp_acked struct if this
451 * packet has "interesting" properties such as being a KeepAlive or
452 * similar
453 */
454 struct tcp_acked *ta;
455
456 /* This structure contains a tree containing all the various ta's
457 * keyed by frame number.
458 */
459 wmem_tree_t *acked_table;
460
461 /* Remember the timestamp of the first frame seen in this tcp
462 * conversation to be able to calculate a relative time compared
463 * to the start of this conversation
464 */
465 nstime_t ts_first;
466
467 /* Remember the timestamp of the most recent SYN in this conversation in
468 * order to calculate the first_rtt below. Not necessarily ts_first, if
469 * the SYN is retransmitted. */
470 nstime_t ts_mru_syn;
471
472 /* If we have the handshake, remember the RTT between the initial SYN
473 * and ACK for use detecting out-of-order segments. */
474 nstime_t ts_first_rtt;
475
476 /* Remember the timestamp of the frame that was last seen in this
477 * tcp conversation to be able to calculate a delta time compared
478 * to previous frame in this conversation
479 */
480 nstime_t ts_prev;
481
482 /* Keep track of tcp stream numbers instead of using the conversation
483 * index (as how it was done before). This prevents gaps in the
484 * stream index numbering
485 */
486 uint32_t stream;
487
488 /* Keep track of packet number within the TCP stream */
489 uint32_t pnum;
490
491 /* allocated only when mptcp enabled
492 * several tcp_analysis may refer to the same mptcp_analysis
493 * can exist without any meta
494 */
495 struct mptcp_analysis* mptcp_analysis;
496
497 /* Remembers the server port on the SYN (or SYN|ACK) packet to
498 * help determine which dissector to call
499 */
500 uint16_t server_port;
501
502 /* Set when the client sends a SYN with data and the cookie in the Fast Open
503 * option.
504 */
505 bool tfo_syn_data;
506
507 /* Remembers which side is currently sending data. */
508 int8_t flow_direction : 2;
509
510 /* Track the TCP conversation completeness, as the capture might
511 * contain all parts of a TCP flow (establishment, data, clearing) or
512 * just some parts if we jumped on the bandwagon of an already established
513 * connection or left before it was terminated explicitly
514 */
515 uint8_t conversation_completeness;
516 /* Track AccECN support */
517 bool had_acc_ecn_setup_syn;
518 bool had_acc_ecn_setup_syn_ack;
519 bool had_acc_ecn_option;
520
521 /* Stores the value as a String to be displayed in the appropriate field */
522 char *conversation_completeness_str;
523};
524
525/* Structure that keeps per packet data. First used to be able
526 * to calculate the time_delta from the last seen frame in this
527 * TCP conversation. Can be extended for future use.
528 */
529 struct tcp_per_packet_data_t {
530 nstime_t ts_del;
531 uint32_t pnum;
532 uint8_t tcp_snd_manual_analysis;
533 bool karn_flag; /* XXX - might later become a bit field */
534};
535
536/* Structure that keeps per packet data. Some operations are cpu-intensive and are
537 * best cached into this structure
538 */
539 typedef struct mptcp_per_packet_data_t_ {
540
541 /* Mapping that covers this packet content */
542 mptcp_dss_mapping_t *mapping;
543
544} mptcp_per_packet_data_t;
545
546
547WS_DLL_PUBLIC void dissect_tcp_payload(tvbuff_t *tvb, packet_info *pinfo, int offset,
548 uint32_t seq, uint32_t nxtseq, uint32_t sport,
549 uint32_t dport, proto_tree *tree,
550 proto_tree *tcp_tree,
551 struct tcp_analysis *tcpd, struct tcpinfo *tcpinfo);
552
553WS_DLL_PUBLIC struct tcp_analysis *get_tcp_conversation_data(conversation_t *conv,
554 packet_info *pinfo);
555
560WS_DLL_PUBLIC struct tcp_analysis *get_tcp_conversation_data_idempotent(conversation_t *conv);
561
562WS_DLL_PUBLIC bool decode_tcp_ports(tvbuff_t *, int, packet_info *, proto_tree *, int, int, struct tcp_analysis *, struct tcpinfo *);
563
576 extern void add_tcp_process_info(uint32_t frame_num, address *local_addr, address *remote_addr, uint16_t local_port, uint16_t remote_port, uint32_t uid, uint32_t pid, char *username, char *command);
577
582WS_DLL_PUBLIC uint32_t get_tcp_stream_count(void);
583
588WS_DLL_PUBLIC uint32_t get_mptcp_stream_count(void);
589
590/* Follow Stream functionality shared with HTTP (and SSL?) */
591 extern char *tcp_follow_conv_filter(epan_dissect_t *edt, packet_info *pinfo, unsigned *stream, unsigned *sub_stream);
592 extern char *tcp_follow_index_filter(unsigned stream, unsigned sub_stream);
593 extern char *tcp_follow_address_filter(address *src_addr, address *dst_addr, int src_port, int dst_port);
594
595#ifdef __cplusplus
596}
597#endif /* __cplusplus */
598
599#endif
conversation.h
reassemble.h
_address
Definition address.h:58
_mptcp_dsn2packet_mapping_t
Definition packet-tcp.h:233
_mptcp_dss_mapping_t
Definition packet-tcp.h:212
_mptcp_meta_flow_t
Definition packet-tcp.h:243
_packet_info
Definition packet_info.h:43
_proto_node
Definition proto.h:905
_tcp_flow_t
Definition packet-tcp.h:360
_tcp_unacked_t
Definition packet-tcp.h:159
_wmem_list_t
Definition wmem_list.c:23
_wmem_tree_t
Internal representation of a wmem balanced tree.
Definition wmem_tree-int.h:81
conversation
Definition conversation.h:230
epan_dissect
Definition epan_dissect.h:28
mptcp_analysis
Definition packet-tcp.h:407
mptcp_per_packet_data_t_
Definition packet-tcp.h:539
mptcp_subflow
Definition packet-tcp.h:275
mptcpheader
Definition packet-tcp.h:50
nstime_t
Definition nstime.h:26
reassembly_table_functions
Definition reassemble.h:161
stream
Definition stream.c:41
tcp_acked
Definition packet-tcp.h:168
tcp_analysis
Definition packet-tcp.h:426
tcp_analyze_seq_flow_info_t
Definition packet-tcp.h:309
tcp_multisegment_pdu
Definition packet-tcp.h:191
tcp_per_packet_data_t
Definition packet-tcp.h:529
tcp_process_info_t
Definition packet-tcp.h:352
tcpheader
Definition packet-tcp.h:83
tcpinfo
Definition packet-tcp.h:118
tvbuff
Definition tvbuff-int.h:36
wmem_scopes.h