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Create a tcp_entry only on ACK

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angt
2016-01-17 10:18:39 +01:00
parent 33356d5d35
commit 1815ea519f
1 changed files with 21 additions and 18 deletions
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39
src/main.c
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@@ -620,7 +620,7 @@ int sa_have (struct seq_array *sa, uint32_t seq, uint32_t size)
if (d+size>sa->elem[i].size) { if (d+size>sa->elem[i].size) {
gt_print("sa_have:part\n"); gt_print("sa_have:part\n");
return 1; // XXX 0 return 0; // XXX 0
} }
} }
@@ -882,40 +882,43 @@ static int gt_track (uint8_t **db, struct ip_common *ic, uint8_t *data, int rev)
return 0; return 0;
} }
uint32_t size = ic->size-ic->hdr_size-tcp.th_off*4; if (tcp.th_flags&TH_ACK) {
if (!r_entry) {
r_entry = calloc(1, sizeof(entry));
if (size && !r_entry) { if (!r_entry)
r_entry = calloc(1, sizeof(entry)); return 0;
if (!r_entry) memcpy(r_entry->key, entry.key, sizeof(entry.key));
return 0;
memcpy(r_entry->key, entry.key, sizeof(entry.key)); if (!db_insert(db, r_entry->key)) {
free(r_entry);
return 0;
}
if (!db_insert(db, r_entry->key)) { gt_print_entry(r_entry);
free(r_entry);
return 0; r_entry->data[1-rev].sa.base = tcp.th_ack;
r_entry->data[rev].sa.base = tcp.th_seq;
} else {
sa_rebase(&r_entry->data[1-rev].sa, tcp.th_ack);
} }
} }
if (!r_entry) if (!r_entry)
return 0; return 0;
if (r_entry->data[1-rev].sa.count && (tcp.th_flags&TH_ACK)) uint32_t size = ic->size-ic->hdr_size-tcp.th_off*4;
sa_rebase(&r_entry->data[1-rev].sa, tcp.th_ack);
if (!size) if (!size)
return 0; return 0;
if (r_entry->data[rev].sa.count) { if (sa_have(&r_entry->data[rev].sa, tcp.th_seq, size)) {
if (sa_have(&r_entry->data[rev].sa, tcp.th_seq, size)) r_entry->data[rev].retrans++;
r_entry->data[rev].retrans++;
} else { } else {
r_entry->data[rev].sa.base = tcp.th_seq; sa_insert(&r_entry->data[rev].sa, tcp.th_seq, size);
} }
sa_insert(&r_entry->data[rev].sa, tcp.th_seq, size);
return 0; return 0;
} }