From 78c896b3b3127515478090c19447e27dc406427e Mon Sep 17 00:00:00 2001 From: Jianfeng Tan Date: Mon, 18 Nov 2019 06:59:50 +0000 Subject: TLDKv2 Signed-off-by: Jianfeng Tan Signed-off-by: Jielong Zhou Signed-off-by: Jian Zhang Signed-off-by: Chen Zhao Change-Id: I55c39de4c6cd30f991f35631eb507f770230f08e --- .../early_retransmit/er-delayed-2pkt-sack.pkt | 27 +++++++++++++++++ .../early_retransmit/er-delayed-3pkt-sack.pkt | 28 +++++++++++++++++ .../er-delayed-filled-3pkt-sack.pkt | 31 +++++++++++++++++++ .../er-delayed-get-ack-3pkt-sack.pkt | 35 ++++++++++++++++++++++ .../linux/early_retransmit/er-quick-2pkt-sack.pkt | 27 +++++++++++++++++ .../linux/early_retransmit/er-quick-3pkt-sack.pkt | 28 +++++++++++++++++ 6 files changed, 176 insertions(+) create mode 100644 test/packetdrill/tests/linux/early_retransmit/er-delayed-2pkt-sack.pkt create mode 100644 test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt create mode 100644 test/packetdrill/tests/linux/early_retransmit/er-delayed-filled-3pkt-sack.pkt create mode 100644 test/packetdrill/tests/linux/early_retransmit/er-delayed-get-ack-3pkt-sack.pkt create mode 100644 test/packetdrill/tests/linux/early_retransmit/er-quick-2pkt-sack.pkt create mode 100644 test/packetdrill/tests/linux/early_retransmit/er-quick-3pkt-sack.pkt (limited to 'test/packetdrill/tests/linux/early_retransmit') diff --git a/test/packetdrill/tests/linux/early_retransmit/er-delayed-2pkt-sack.pkt b/test/packetdrill/tests/linux/early_retransmit/er-delayed-2pkt-sack.pkt new file mode 100644 index 0000000..72afec0 --- /dev/null +++ b/test/packetdrill/tests/linux/early_retransmit/er-delayed-2pkt-sack.pkt @@ -0,0 +1,27 @@ +// Test delayed ER with 2 packets outstanding, receiver sending SACKs. + +// Enable delayed early retransmit. +`sysctl -q net.ipv4.tcp_early_retrans=2` + +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 32792 +0.100 > S. 0:0(0) ack 1 +0.200 < . 1:1(0) ack 1 win 257 +0.200 accept(3, ..., ...) = 4 + +0.200 write(4, ..., 2920) = 2920 +0.200 > P. 1:2921(2920) ack 1 +0.300 < . 1:1(0) ack 1 win 257 +0.325 > . 1:1461(1460) ack 1 // delayed Early Retransmit at RTT/4 = 25ms +0.425 < . 1:1(0) ack 2921 win 257 + +0.500 close(4) = 0 +0.500 > F. 2921:2921(0) ack 1 +0.600 < F. 1:1(0) ack 2922 win 257 +0.601 > . 2922:2922(0) ack 2 + +0.700 `sysctl -q net.ipv4.tcp_early_retrans=3` diff --git a/test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt b/test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt new file mode 100644 index 0000000..5d05264 --- /dev/null +++ b/test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt @@ -0,0 +1,28 @@ +// Test delayed ER with 3 packets outstanding, receiver sending SACKs. + +// Enable delayed early retransmit. +`sysctl -q net.ipv4.tcp_early_retrans=2` + +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 32792 +0.100 > S. 0:0(0) ack 1 +0.200 < . 1:1(0) ack 1 win 257 +0.200 accept(3, ..., ...) = 4 + +0.200 write(4, ..., 4380) = 4380 +0.200 > P. 1:4381(4380) ack 1 +0.300 < . 1:1(0) ack 1 win 257 +0.300 < . 1:1(0) ack 1 win 257 +0.325 > . 1:1461(1460) ack 1 // delayed Early Retransmit at RTT/4 = 25ms +0.425 < . 1:1(0) ack 4381 win 257 + +0.500 close(4) = 0 +0.500 > F. 4381:4381(0) ack 1 +0.600 < F. 1:1(0) ack 4382 win 257 +0.601 > . 4382:4382(0) ack 2 + +0.700 `sysctl -q net.ipv4.tcp_early_retrans=3` diff --git a/test/packetdrill/tests/linux/early_retransmit/er-delayed-filled-3pkt-sack.pkt b/test/packetdrill/tests/linux/early_retransmit/er-delayed-filled-3pkt-sack.pkt new file mode 100644 index 0000000..e06db1b --- /dev/null +++ b/test/packetdrill/tests/linux/early_retransmit/er-delayed-filled-3pkt-sack.pkt @@ -0,0 +1,31 @@ +// Test delayed ER with 3 packets outstanding, receiver sending SACKs. +// Added wrinkles: (1) ACK for missing first packet finally arrives, +// filling the hole and making the ER superfluous. +// This test verifies that the ER timer gets correctly cancelled. + +// Enable delayed early retransmit. +`sysctl -q net.ipv4.tcp_early_retrans=2` + +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 32792 +0.100 > S. 0:0(0) ack 1 +0.200 < . 1:1(0) ack 1 win 257 +0.200 accept(3, ..., ...) = 4 + +0.200 write(4, ..., 4380) = 4380 +0.200 > P. 1:4381(4380) ack 1 +0.300 < . 1:1(0) ack 1 win 257 +0.300 < . 1:1(0) ack 1 win 257 +0.310 < . 1:1(0) ack 4381 win 257 +// No ER or RTO timer should fire here, since all data is ACKed + +1.800 close(4) = 0 +1.800 > F. 4381:4381(0) ack 1 +1.900 < F. 1:1(0) ack 4382 win 257 +1.900 > . 4382:4382(0) ack 2 + +2.000 `sysctl -q net.ipv4.tcp_early_retrans=3` diff --git a/test/packetdrill/tests/linux/early_retransmit/er-delayed-get-ack-3pkt-sack.pkt b/test/packetdrill/tests/linux/early_retransmit/er-delayed-get-ack-3pkt-sack.pkt new file mode 100644 index 0000000..794bcb0 --- /dev/null +++ b/test/packetdrill/tests/linux/early_retransmit/er-delayed-get-ack-3pkt-sack.pkt @@ -0,0 +1,35 @@ +// Test delayed ER with 3 packets outstanding, receiver sending SACKs. +// Added wrinkles: (1) sender gets an ACK before delayed ER timer fires, +// so we don't do the originally scheduled ER but instead reschedule +// the ER timer for later. + +// Enable delayed early retransmit. +`sysctl -q net.ipv4.tcp_early_retrans=2` + +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 32792 +0.100 > S. 0:0(0) ack 1 +0.200 < . 1:1(0) ack 1 win 257 +0.200 accept(3, ..., ...) = 4 + +0.200 write(4, ..., 4380) = 4380 +0.200 > P. 1:4381(4380) ack 1 +0.300 < . 1:1(0) ack 1 win 257 +0.300 < . 1:1(0) ack 1 win 257 +// Next we get an ACK before ER fires. Any ACK should cause us +// to cancel ER timer, whether it ACKs new data or (as in this case) does not. +// Then we reschedule the ER timer again. +0.310 < . 1:1(0) ack 1 win 257 +0.335 > . 1:1461(1460) ack 1 // delayed ER at 0.310 + RTT/4=25ms +0.435 < . 1:1(0) ack 4381 win 257 + +0.700 close(4) = 0 +0.700 > F. 4381:4381(0) ack 1 +0.800 < F. 1:1(0) ack 4382 win 257 +0.800 > . 4382:4382(0) ack 2 + +0.900 `sysctl -q net.ipv4.tcp_early_retrans=3` diff --git a/test/packetdrill/tests/linux/early_retransmit/er-quick-2pkt-sack.pkt b/test/packetdrill/tests/linux/early_retransmit/er-quick-2pkt-sack.pkt new file mode 100644 index 0000000..6d0652c --- /dev/null +++ b/test/packetdrill/tests/linux/early_retransmit/er-quick-2pkt-sack.pkt @@ -0,0 +1,27 @@ +// Test quick ER (no delay) with 2 packets outstanding, receiver sending SACKs. + +// Enable quick early retransmit. +`sysctl -q net.ipv4.tcp_early_retrans=1` + +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 32792 +0.100 > S. 0:0(0) ack 1 +0.200 < . 1:1(0) ack 1 win 257 +0.200 accept(3, ..., ...) = 4 + +0.200 write(4, ..., 2920) = 2920 +0.200 > P. 1:2921(2920) ack 1 +0.300 < . 1:1(0) ack 1 win 257 +0.300 > . 1:1461(1460) ack 1 // quick Early Retransmit +0.400 < . 1:1(0) ack 2921 win 257 + +0.500 close(4) = 0 +0.500 > F. 2921:2921(0) ack 1 +0.600 < F. 1:1(0) ack 2922 win 257 +0.601 > . 2922:2922(0) ack 2 + +0.700 `sysctl -q net.ipv4.tcp_early_retrans=3` diff --git a/test/packetdrill/tests/linux/early_retransmit/er-quick-3pkt-sack.pkt b/test/packetdrill/tests/linux/early_retransmit/er-quick-3pkt-sack.pkt new file mode 100644 index 0000000..49719bb --- /dev/null +++ b/test/packetdrill/tests/linux/early_retransmit/er-quick-3pkt-sack.pkt @@ -0,0 +1,28 @@ +// Test quick ER (no delay) with 3 packets outstanding, receiver sending SACKs. + +// Enable quick early retransmit. +`sysctl -q net.ipv4.tcp_early_retrans=1` + +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 32792 +0.100 > S. 0:0(0) ack 1 +0.200 < . 1:1(0) ack 1 win 257 +0.200 accept(3, ..., ...) = 4 + +0.200 write(4, ..., 4380) = 4380 +0.200 > P. 1:4381(4380) ack 1 +0.300 < . 1:1(0) ack 1 win 257 +0.300 < . 1:1(0) ack 1 win 257 +0.300 > . 1:1461(1460) ack 1 // quick ER (no delay) +0.400 < . 1:1(0) ack 4381 win 257 + +0.500 close(4) = 0 +0.500 > F. 4381:4381(0) ack 1 +0.600 < F. 1:1(0) ack 4382 win 257 +0.601 > . 4382:4382(0) ack 2 + +0.700 `sysctl -q net.ipv4.tcp_early_retrans=3` -- cgit 1.2.3-korg