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| author |   Jianfeng Tan <henry.tjf@antfin.com> | 2019-11-18 06:59:50 +0000 |
|---|---|---|
| committer | Jianfeng Tan <henry.tjf@antfin.com> | 2020-03-05 01:31:33 +0800 |
| commit | 78c896b3b3127515478090c19447e27dc406427e (patch) | |
| tree | d6d67d4683e9ca0409f9984a834547a572fb5310 /test/packetdrill/tests/tldk/tso/tso-segment-split.pkt | |
| parent | e4380f4866091fd92a7a57667dd938a99144f9cd (diff) | |
TLDKv2dev-next-socket
Signed-off-by: Jianfeng Tan <henry.tjf@antfin.com>
Signed-off-by: Jielong Zhou <jielong.zjl@antfin.com>
Signed-off-by: Jian Zhang <wuzai.zj@antfin.com>
Signed-off-by: Chen Zhao <winters.zc@antfin.com>
Change-Id: I55c39de4c6cd30f991f35631eb507f770230f08e
Diffstat (limited to 'test/packetdrill/tests/tldk/tso/tso-segment-split.pkt')
| -rw-r--r-- | test/packetdrill/tests/tldk/tso/tso-segment-split.pkt | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/test/packetdrill/tests/tldk/tso/tso-segment-split.pkt b/test/packetdrill/tests/tldk/tso/tso-segment-split.pkt new file mode 100644 index 0000000..6b98323 --- /dev/null +++ b/test/packetdrill/tests/tldk/tso/tso-segment-split.pkt @@ -0,0 +1,63 @@ +// Test TSO segment split + +// Establish a connection. +0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0.000 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0.000 bind(3, ..., ...) = 0 +0.000 listen(3, 1) = 0 + +0.100 < S 0:0(0) win 5360 <mss 536,sackOK,nop,nop,nop,wscale 7> ++0 > S. 0:0(0) ack 1 <mss 1460,wscale 10,nop> + ++.1 < . 1:1(0) ack 1 win 5360 +0.200 accept(3, ..., ...) = 4 + +// Send 10 MSS. +0.200 write(4, ..., 5360) = 5360 +0.200 > . 1:5361(5360) ack 1 + +// Ack 1st mss (partial ack), and update rcv windows to 1 mss +0.200 < . 1:1(0) ack 537 win 536 + +// Get 3 dupacks, and reduce rcv window to only 1 mss +0.300 < . 1:1(0) ack 537 win 536 +0.300 < . 1:1(0) ack 537 win 536 +0.300 < . 1:1(0) ack 537 win 536 + +// We've received 3 duplicate ACKs, so we do a fast retransmit; +// Segment split happens here. +0.300 > . 537:1073(536) ack 1 + +// Ack 2nd mss (partial ack) +0.300 < . 1:1(0) ack 1073 win 536 + +// 3nd mss +0.300 > . 1073:1609(536) ack 1 + +// Now let's try ack somehere between (3*mss, 4*mss) +0.303 < . 1:1(0) ack 2049 win 536 + +// We shall send from 2049, and send another mss. +0.303 > . 2049:2585(536) ack 1 + +// We send some more new data, but it cannot be sent for limited window. +0.303 write(4, ..., 5360) = 5360 + +0.305 < . 1:1(0) ack 2585 win 5360 + +0.306 > . 2585:5361(2776) ack 1 +0.306 < . 1:1(0) ack 5361 win 5360 + +// FIXME: the cwnd has been reduced to 2*mss +0.307 > . 5361:6433(1072) ack 1 +0.307 < . 1:1(0) ack 6433 win 5360 + +// FIXME: below behavisor makes no sense +0.307 > . 6433:7409(976) ack 1 +0.307 < . 1:1(0) ack 7409 win 5360 + +0.307 > . 7409:9457(2048) ack 1 +0.307 < . 1:1(0) ack 9457 win 5360 + +0.308 > . 9457:10721(1264) ack 1 +0.308 < . 1:1(0) ack 10721 win 5360 |