diff options
Diffstat (limited to 'test/packetdrill/tests/linux/sack/sack-shift-sacked-1-2:6-fack.pkt')
-rw-r--r-- | test/packetdrill/tests/linux/sack/sack-shift-sacked-1-2:6-fack.pkt | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/test/packetdrill/tests/linux/sack/sack-shift-sacked-1-2:6-fack.pkt b/test/packetdrill/tests/linux/sack/sack-shift-sacked-1-2:6-fack.pkt new file mode 100644 index 0000000..464ba69 --- /dev/null +++ b/test/packetdrill/tests/linux/sack/sack-shift-sacked-1-2:6-fack.pkt @@ -0,0 +1,39 @@ +// Test shifting of newly-SACKed ranges onto the previous already-SACKed skb. +// This variant receives a SACK for segment 1 and then a SACK for +// segments 1-6, to check handling of large newly-SACKed ranges. + +// Establish a connection and send 10 MSS. +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 <mss 1000,sackOK,nop,nop,nop,wscale 7> +0.100 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6> +0.200 < . 1:1(0) ack 1 win 1024 +0.200 accept(3, ..., ...) = 4 + +0.200 write(4, ..., 10000) = 10000 +0.200 > P. 1:10001(10000) ack 1 +0.200 %{ +assert tcpi_reordering == 3 +assert tcpi_unacked == 10 +assert tcpi_sacked == 0 +}% + +0.300 < . 1:1(0) ack 1 win 257 <sack 1001:2001,nop,nop> +0.300 %{ +assert tcpi_reordering == 3 +assert tcpi_unacked == 10 +assert tcpi_sacked == 1 +}% + +// This SACK for an adjacent range causes the sender to +// shift the newly-SACKed range onto the previous skb. +0.310 < . 1:1(0) ack 1 win 257 <sack 1001:7001,nop,nop> +0.310 %{ +assert tcpi_reordering == 3 +assert tcpi_unacked == 10 +assert tcpi_sacked == 6 +assert tcpi_ca_state == TCP_CA_Recovery +}% |