diff options
Diffstat (limited to 'test/packetdrill/tests/linux/listen')
6 files changed, 110 insertions, 0 deletions
diff --git a/test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt b/test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt new file mode 100644 index 0000000..65f3733 --- /dev/null +++ b/test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt @@ -0,0 +1,20 @@ +// Test behavior when a listener gets an incoming packet that has +// the ACK bit set but not the SYN bit set. + +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 < . 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> +0.100 > R 0:0(0) win 0 + +// Now make sure that when a valid SYN arrives shortly thereafter +// (with the same address 4-tuple) we can still successfully establish +// a connection. + +0.200 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> +0.200 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6> + +0.300 < . 1:1(0) ack 1 win 320 +0.300 accept(3, ..., ...) = 4 diff --git a/test/packetdrill/tests/linux/listen/listen-incoming-no-tcp-flags.pkt b/test/packetdrill/tests/linux/listen/listen-incoming-no-tcp-flags.pkt new file mode 100644 index 0000000..3ae1ff3 --- /dev/null +++ b/test/packetdrill/tests/linux/listen/listen-incoming-no-tcp-flags.pkt @@ -0,0 +1,21 @@ +// Test behavior when a listener gets an incoming packet that has +// no TCP flags set. + +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 + +// An incoming TCP segment with no TCP flags set. +0.100 < - 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> +// Linux ignores the packet and sends nothing. + +// Now make sure that when a valid SYN arrives shortly thereafter +// (with the same address 4-tuple) we can still successfully establish +// a connection. + +0.200 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> +0.200 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6> + +0.300 < . 1:1(0) ack 1 win 320 +0.300 accept(3, ..., ...) = 4 diff --git a/test/packetdrill/tests/linux/listen/listen-incoming-rst.pkt b/test/packetdrill/tests/linux/listen/listen-incoming-rst.pkt new file mode 100644 index 0000000..83d25f2 --- /dev/null +++ b/test/packetdrill/tests/linux/listen/listen-incoming-rst.pkt @@ -0,0 +1,22 @@ +// Test behavior when a listener gets an incoming packet that has +// the RST bit set but not the SYN bit set. + +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 < R 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> + +// The TCP stack should not respond to incoming RSTs, or else +// we could get infinite RST ping-pong storms. + +// Now make sure that when a valid SYN arrives shortly thereafter +// (with the same address 4-tuple) we can still successfully establish +// a connection. + +0.200 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> +0.200 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6> + +0.300 < . 1:1(0) ack 1 win 320 +0.300 accept(3, ..., ...) = 4 diff --git a/test/packetdrill/tests/linux/listen/listen-incoming-syn-ack.pkt b/test/packetdrill/tests/linux/listen/listen-incoming-syn-ack.pkt new file mode 100644 index 0000000..bc2569c --- /dev/null +++ b/test/packetdrill/tests/linux/listen/listen-incoming-syn-ack.pkt @@ -0,0 +1,20 @@ +// Test behavior when a listener gets an incoming packet that has +// the SYN and ACK bits set. + +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 > R 0:0(0) win 0 + +// Now make sure that when a valid SYN arrives shortly thereafter +// (with the same address 4-tuple) we can still successfully establish +// a connection. + +0.200 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> +0.200 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6> + +0.300 < . 1:1(0) ack 1 win 320 +0.300 accept(3, ..., ...) = 4 diff --git a/test/packetdrill/tests/linux/listen/listen-incoming-syn-rst.pkt b/test/packetdrill/tests/linux/listen/listen-incoming-syn-rst.pkt new file mode 100644 index 0000000..f3c0607 --- /dev/null +++ b/test/packetdrill/tests/linux/listen/listen-incoming-syn-rst.pkt @@ -0,0 +1,22 @@ +// Test behavior when a listener gets an incoming packet that has +// the SYN and RST bits set. + +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 < SR 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> + +// The TCP stack should not respond to incoming RSTs, or else +// we could get infinite RST ping-pong storms. + +// Now make sure that when a valid SYN arrives shortly thereafter +// (with the same address 4-tuple) we can still successfully establish +// a connection. + +0.200 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> +0.200 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6> + +0.300 < . 1:1(0) ack 1 win 320 +0.300 accept(3, ..., ...) = 4 diff --git a/test/packetdrill/tests/linux/listen/listen-unbound.pkt b/test/packetdrill/tests/linux/listen/listen-unbound.pkt new file mode 100644 index 0000000..fcf74fc --- /dev/null +++ b/test/packetdrill/tests/linux/listen/listen-unbound.pkt @@ -0,0 +1,5 @@ +// Test behavior when a listener gets an incoming packet that has +// the RST bit set but not the SYN bit set. + +0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0.000 listen(3, 1) = 0
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