2 * Netgrind -- The Network Traffic Analyser
4 * (c) 2003 Martin Mares <mj@ucw.cz>
6 * This software may be freely distributed and used according to the terms
7 * of the GNU General Public License.
10 #define IPQUAD(x) ((byte*)&(x))[0], ((byte*)&(x))[1], ((byte*)&(x))[2], ((byte*)&(x))[3]
14 extern struct pkt_stats stat_link_dwarf, stat_link_in, stat_link_unknown, stat_link_arp;
16 void link_eth_got_packet(struct pkt *p);
20 extern struct pkt_stats stat_ip_in, stat_ip_invalid, stat_ip_uninteresting, stat_ip_fragmented, stat_ip_badsum;
22 uns tcpip_calc_checksum(void *data, uns len, uns csum);
23 uns tcpip_verify_checksum(uns csum);
24 void ip_got_packet(struct pkt *p);
28 extern struct pkt_stats stat_tcp_in, stat_tcp_invalid, stat_tcp_badsum, stat_tcp_unmatched,
29 stat_tcp_on_closed, stat_tcp_bad_state;
30 extern uns tcp_total_flows, tcp_num_flows, tcp_max_flows;
33 extern uns tcp_arrival_times;
34 extern uns tcp_wait_for_ack;
37 list queue; /* incoming packets */
38 u32 last_acked_seq; /* last sequence number for which I sent ACK */
39 u32 syn_or_fin_seq; /* sequence number of SYN/FIN I sent */
40 u32 queue_start_seq; /* sequence number expected at the start of the queue */
41 enum { /* very simplified TCP state machine */
43 FLOW_SYN_SENT, /* sent SYN, waiting for SYN ACK */
44 FLOW_SYN_SENT_ACK, /* sent SYN ACK, waiting for first ACK */
45 FLOW_ESTABLISHED, /* established state including waiting for ACK of SYN ACK */
46 FLOW_FIN_SENT, /* sent FIN, waiting for its ACK */
47 FLOW_FINISHED /* closed, ignoring further packets */
49 struct pkt_stats stat;
53 struct flow *hash_next;
54 u32 saddr, daddr, sport, dport;
57 struct appl_hooks *appl;
60 struct pkt_stats stat_raw;
71 void (*open)(struct flow *f, u64 when);
72 void (*input)(struct flow *f, int dir, struct pkt *p); /* dir0 = sent by initiator */
73 void (*close)(struct flow *f, int cause, u64 when);
79 void tcp_cleanup(void);
80 void tcp_got_packet(struct iphdr *iph, struct pkt *p);
82 extern struct appl_hooks *tcp_default_appl;
86 extern struct appl_hooks appl_sink, appl_save, appl_asave;
87 extern uns asave_width;
88 extern byte *save_dir;