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TCP reassembly add stat of TCP retransmit and TCP overlap

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This commit is contained in:
luwenpeng
2024-05-06 15:54:16 +08:00
parent 309736f9f1
commit 61ee619689
8 changed files with 167 additions and 70 deletions
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37
src/tcp_reassembly/tcp_reassembly.h
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@@ -15,8 +15,8 @@ extern "C"
struct tcp_segment
{
uint32_t len;
const void *data;
uint32_t len;
const void *data;
};
struct tcp_segment *tcp_segment_new(uint32_t seq, const void *data, uint32_t len);
@@ -25,9 +25,12 @@ void tcp_segment_free(struct tcp_segment *seg);
struct tcp_reassembly *tcp_reassembly_new(uint64_t max_timeout, uint64_t max_seg_num);
void tcp_reassembly_free(struct tcp_reassembly *assembler);
// return: 1: success (seg overlap)
// return: 0: success
// return: -1: failed (no space)
/*
* return: 1: push tcp segment success (segment overlap)
* return: 0: push tcp segment success
* return: -1: push tcp segment failed (no space)
* return: -2: push tcp segment failed (segment repeat)
*/
int tcp_reassembly_push(struct tcp_reassembly *assembler, struct tcp_segment *seg, uint64_t now);
struct tcp_segment *tcp_reassembly_pop(struct tcp_reassembly *assembler);
struct tcp_segment *tcp_reassembly_expire(struct tcp_reassembly *assembler, uint64_t now);
@@ -36,6 +39,30 @@ void tcp_reassembly_inc_recv_next(struct tcp_reassembly *assembler, uint32_t off
void tcp_reassembly_set_recv_next(struct tcp_reassembly *assembler, uint32_t seq);
uint32_t tcp_reassembly_get_recv_next(struct tcp_reassembly *assembler);
/*
* The next routines deal with comparing 32 bit unsigned ints
* and worry about wraparound (automatic with unsigned arithmetic).
*/
static inline bool uint32_before(uint32_t seq1, uint32_t seq2)
{
return (int32_t)(seq1 - seq2) < 0;
}
static inline uint32_t uint32_add(uint32_t seq, uint32_t inc)
{
if (seq > UINT32_MAX - inc)
{
seq = ((uint64_t)seq + (uint64_t)inc) % (4294967296);
}
else
{
seq += inc;
}
return seq;
}
#ifdef __cplusplus
}
#endif