From bec1f3b119ebc613d08dfbcdbaef01a79aa7de92 Mon Sep 17 00:00:00 2001 From: "Matthieu Baerts (NGI0)" Date: Wed, 31 Jul 2024 13:05:58 +0200 Subject: selftests: mptcp: join: ability to invert ADD_ADDR check In the following commit, the client will initiate the ADD_ADDR, instead of the server. We need to way to verify the ADD_ADDR have been correctly sent. Note: the default expected counters for when the port number is given are never changed by the caller, no need to accept them as parameter then. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 86e39e04482b ("mptcp: keep track of local endpoint still available for each msk") Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20240731-upstream-net-20240731-mptcp-endp-subflow-signal-v1-6-c8a9b036493b@kernel.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/mptcp/mptcp_join.sh | 40 ++++++++++++++++--------- 1 file changed, 26 insertions(+), 14 deletions(-) (limited to 'tools/testing') diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh index 4df48f1f14ab..52a25ac43d10 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -1415,18 +1415,28 @@ chk_add_nr() local add_nr=$1 local echo_nr=$2 local port_nr=${3:-0} - local syn_nr=${4:-$port_nr} - local syn_ack_nr=${5:-$port_nr} - local ack_nr=${6:-$port_nr} - local mis_syn_nr=${7:-0} - local mis_ack_nr=${8:-0} + local ns_invert=${4:-""} + local syn_nr=$port_nr + local syn_ack_nr=$port_nr + local ack_nr=$port_nr + local mis_syn_nr=0 + local mis_ack_nr=0 + local ns_tx=$ns1 + local ns_rx=$ns2 + local extra_msg="" local count local timeout - timeout=$(ip netns exec $ns1 sysctl -n net.mptcp.add_addr_timeout) + if [[ $ns_invert = "invert" ]]; then + ns_tx=$ns2 + ns_rx=$ns1 + extra_msg="invert" + fi + + timeout=$(ip netns exec ${ns_tx} sysctl -n net.mptcp.add_addr_timeout) print_check "add" - count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtAddAddr") + count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtAddAddr") if [ -z "$count" ]; then print_skip # if the test configured a short timeout tolerate greater then expected @@ -1438,7 +1448,7 @@ chk_add_nr() fi print_check "echo" - count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtEchoAdd") + count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtEchoAdd") if [ -z "$count" ]; then print_skip elif [ "$count" != "$echo_nr" ]; then @@ -1449,7 +1459,7 @@ chk_add_nr() if [ $port_nr -gt 0 ]; then print_check "pt" - count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtPortAdd") + count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtPortAdd") if [ -z "$count" ]; then print_skip elif [ "$count" != "$port_nr" ]; then @@ -1459,7 +1469,7 @@ chk_add_nr() fi print_check "syn" - count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMPJoinPortSynRx") + count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMPJoinPortSynRx") if [ -z "$count" ]; then print_skip elif [ "$count" != "$syn_nr" ]; then @@ -1470,7 +1480,7 @@ chk_add_nr() fi print_check "synack" - count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtMPJoinPortSynAckRx") + count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtMPJoinPortSynAckRx") if [ -z "$count" ]; then print_skip elif [ "$count" != "$syn_ack_nr" ]; then @@ -1481,7 +1491,7 @@ chk_add_nr() fi print_check "ack" - count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMPJoinPortAckRx") + count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMPJoinPortAckRx") if [ -z "$count" ]; then print_skip elif [ "$count" != "$ack_nr" ]; then @@ -1492,7 +1502,7 @@ chk_add_nr() fi print_check "syn" - count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMismatchPortSynRx") + count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMismatchPortSynRx") if [ -z "$count" ]; then print_skip elif [ "$count" != "$mis_syn_nr" ]; then @@ -1503,7 +1513,7 @@ chk_add_nr() fi print_check "ack" - count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMismatchPortAckRx") + count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMismatchPortAckRx") if [ -z "$count" ]; then print_skip elif [ "$count" != "$mis_ack_nr" ]; then @@ -1513,6 +1523,8 @@ chk_add_nr() print_ok fi fi + + print_info "$extra_msg" } chk_add_tx_nr() -- cgit v1.2.3 From 4d2868b5d191c74262f7407972d68d1bf3245d6a Mon Sep 17 00:00:00 2001 From: "Matthieu Baerts (NGI0)" Date: Wed, 31 Jul 2024 13:05:59 +0200 Subject: selftests: mptcp: join: test both signal & subflow It should be quite uncommon to set both the subflow and the signal flags: the initiator of the connection is typically the one creating new subflows, not the other peer, then no need to announce additional local addresses, and use it to create subflows. But some people might be confused about the flags, and set both "just to be sure at least the right one is set". To verify the previous fix, and avoid future regressions, this specific case is now validated: the client announces a new address, and initiates a new subflow from the same address. While working on this, another bug has been noticed, where the client reset the new subflow because an ADD_ADDR echo got received as the 3rd ACK: this new test also explicitly checks that no RST have been sent by the client and server. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 86e39e04482b ("mptcp: keep track of local endpoint still available for each msk") Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20240731-upstream-net-20240731-mptcp-endp-subflow-signal-v1-7-c8a9b036493b@kernel.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/mptcp/mptcp_join.sh | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'tools/testing') diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh index 52a25ac43d10..9ea6d698e9d3 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -1989,6 +1989,21 @@ signal_address_tests() chk_add_nr 1 1 fi + # uncommon: subflow and signal flags on the same endpoint + # or because the user wrongly picked both, but still expects the client + # to create additional subflows + if reset "subflow and signal together"; then + pm_nl_set_limits $ns1 0 2 + pm_nl_set_limits $ns2 0 2 + pm_nl_add_endpoint $ns2 10.0.3.2 flags signal,subflow + run_tests $ns1 $ns2 10.0.1.1 + chk_join_nr 1 1 1 + chk_add_nr 1 1 0 invert # only initiated by ns2 + chk_add_nr 0 0 0 # none initiated by ns1 + chk_rst_nr 0 0 invert # no RST sent by the client + chk_rst_nr 0 0 # no RST sent by the server + fi + # accept and use add_addr with additional subflows if reset "multiple subflows and signal"; then pm_nl_set_limits $ns1 0 3 -- cgit v1.2.3