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tap-tcp-stream.h
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1
14#ifndef __TAP_TCP_STREAM_H__
15#define __TAP_TCP_STREAM_H__
16
17#ifdef __cplusplus
18extern "C" {
19#endif /* __cplusplus */
20
21typedef enum tcp_graph_type_ {
22 GRAPH_TSEQ_STEVENS,
23 GRAPH_TSEQ_TCPTRACE,
24 GRAPH_THROUGHPUT,
25 GRAPH_RTT,
26 GRAPH_WSCALE,
27 GRAPH_UNDEFINED
28} tcp_graph_type;
29
30struct segment {
31 struct segment *next;
32 uint32_t num;
33 uint32_t rel_secs;
34 uint32_t rel_usecs;
35 /* Currently unused.
36 time_t abs_secs;
37 uint32_t abs_usecs;
38 */
39
40 uint32_t th_seq;
41 uint32_t th_ack;
42 uint32_t th_rawseq;
43 uint32_t th_rawack;
44 uint16_t th_flags;
45 uint32_t th_win; /* make it 32 bits so we can handle some scaling */
46 uint32_t th_seglen;
47 uint16_t th_sport;
48 uint16_t th_dport;
49 address ip_src;
50 address ip_dst;
51
52 uint8_t num_sack_ranges;
53 uint32_t sack_left_edge[MAX_TCP_SACK_RANGES];
54 uint32_t sack_right_edge[MAX_TCP_SACK_RANGES];
55};
56
57struct tcp_graph {
58 tcp_graph_type type;
59
60 /* The stream this graph will show */
61 address src_address;
62 uint16_t src_port;
63 address dst_address;
64 uint16_t dst_port;
65 uint32_t stream;
66 /* Should this be a map or tree instead? */
67 struct segment *segments;
68};
69
79void graph_segment_list_free(struct tcp_graph * );
80
81/* for compare_headers() */
82/* segment went the same direction as the currently selected one */
83#define COMPARE_CURR_DIR 0
84#define COMPARE_ANY_DIR 1
85
86int compare_headers(address *saddr1, address *daddr1, uint16_t sport1, uint16_t dport1, const address *saddr2, const address *daddr2, uint16_t sport2, uint16_t dport2, int dir);
87
88int get_num_dsegs(struct tcp_graph * );
89int get_num_acks(struct tcp_graph *, int * );
90
91uint32_t select_tcpip_session(capture_file *);
92
93/* This is used by rtt module only */
94struct rtt_unack {
95 struct rtt_unack *next;
96 double time;
97 unsigned int seqno;
98 unsigned int end_seqno;
99};
100
101int rtt_is_retrans(struct rtt_unack * , unsigned int );
102struct rtt_unack *rtt_get_new_unack(double , unsigned int , unsigned int );
103void rtt_put_unack_on_list(struct rtt_unack ** , struct rtt_unack * );
104void rtt_delete_unack_from_list(struct rtt_unack ** , struct rtt_unack * );
105void rtt_destroy_unack_list(struct rtt_unack ** );
106
107static inline int
108tcp_seq_before(uint32_t s1, uint32_t s2) {
109 return (int32_t)(s1 - s2) < 0;
110}
111
112static inline int
113tcp_seq_eq_or_after(uint32_t s1, uint32_t s2) {
114 return !tcp_seq_before(s1, s2);
115}
116
117static inline int
118tcp_seq_after(uint32_t s1, uint32_t s2) {
119 return (int32_t)(s1 - s2) > 0;
120}
121
122static inline int tcp_seq_before_or_eq(uint32_t s1, uint32_t s2) {
123 return !tcp_seq_after(s1, s2);
124}
125
126#ifdef __cplusplus
127}
128#endif /* __cplusplus */
129
130#endif /* __TAP_TCP_STREAM_H__ */
Definition address.h:56
Definition cfile.h:67
Definition tap-tcp-stream.h:94
Definition tap-tcp-stream.h:30
Definition stream.c:41
Definition tap-tcp-stream.h:57
void graph_segment_list_get(capture_file *cf, struct tcp_graph *tg)
Definition tap-tcp-stream.c:137