[PATCH 1/4] RDMA/rxe: Add testcase for net namespace rxe

[Zhu Yanjun <yanjun.zhu@linux.dev>]

Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
---
 MAINTAINERS                                   |  1 +
 tools/testing/selftests/Makefile              |  1 +
 tools/testing/selftests/rdma/Makefile         |  5 ++
 tools/testing/selftests/rdma/config           |  3 +
 .../selftests/rdma/rping_between_netns.sh     | 57 +++++++++++++++++
 tools/testing/selftests/rdma/rxe_ipv6.sh      | 47 ++++++++++++++
 .../testing/selftests/rdma/socket_with_rxe.sh | 64 +++++++++++++++++++
 7 files changed, 178 insertions(+)
 create mode 100644 tools/testing/selftests/rdma/Makefile
 create mode 100644 tools/testing/selftests/rdma/config
 create mode 100755 tools/testing/selftests/rdma/rping_between_netns.sh
 create mode 100755 tools/testing/selftests/rdma/rxe_ipv6.sh
 create mode 100755 tools/testing/selftests/rdma/socket_with_rxe.sh

diff --git a/MAINTAINERS b/MAINTAINERS
index 61bf550fd37c..3f3aca470d77 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -24509,6 +24509,7 @@ L:	linux-rdma@vger.kernel.org
 S:	Supported
 F:	drivers/infiniband/sw/rxe/
 F:	include/uapi/rdma/rdma_user_rxe.h
+F:	tools/testing/selftests/rdma/
 
 SOFTLOGIC 6x10 MPEG CODEC
 M:	Bluecherry Maintainers <maintainers@bluecherrydvr.com>
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 450f13ba4cca..110e07c0d99d 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -94,6 +94,7 @@ TARGETS += proc
 TARGETS += pstore
 TARGETS += ptrace
 TARGETS += openat2
+TARGETS += rdma
 TARGETS += resctrl
 TARGETS += riscv
 TARGETS += rlimits
diff --git a/tools/testing/selftests/rdma/Makefile b/tools/testing/selftests/rdma/Makefile
new file mode 100644
index 000000000000..362e97f0fb3e
--- /dev/null
+++ b/tools/testing/selftests/rdma/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+TEST_PROGS := rping_between_netns.sh \
+		rxe_ipv6.sh \
+		socket_with_rxe.sh
+include ../lib.mk
diff --git a/tools/testing/selftests/rdma/config b/tools/testing/selftests/rdma/config
new file mode 100644
index 000000000000..4ffb814e253b
--- /dev/null
+++ b/tools/testing/selftests/rdma/config
@@ -0,0 +1,3 @@
+CONFIG_TUN
+CONFIG_VETH
+CONFIG_RDMA_RXE
diff --git a/tools/testing/selftests/rdma/rping_between_netns.sh b/tools/testing/selftests/rdma/rping_between_netns.sh
new file mode 100755
index 000000000000..80b4249dba55
--- /dev/null
+++ b/tools/testing/selftests/rdma/rping_between_netns.sh
@@ -0,0 +1,57 @@
+#!/bin/sh
+
+# Notes:
+#
+# 1. Before running this script, please disable the firewall, as it may
+# block UDP port 4791.
+
+# 2. This test script depends on the veth and tun drivers. Before running
+#  the script, please verify that both drivers are available by executing:
+#
+# modinfo veth
+#
+# Make sure these commands return valid module information.
+
+#1. Check if rping can work or not
+exec > /dev/null
+ip netns add test1
+ip netns ls
+ip link add veth-a type veth peer name veth-b
+ip l
+ip link set veth-a netns test1
+ip l
+ip netns exec test1 ip l set veth-a up
+ip netns exec test1 ip addr add 1.1.1.1/24 dev veth-a
+ip netns exec test1 ip l
+ip netns exec test1 ip -4 a
+ip netns exec test1 rdma link add rxe0 type rxe netdev veth-a
+
+#check if socket exist or not
+ip netns exec test1 ss -lun | grep :4791
+
+ip netns exec test1 rdma link
+ip link set veth-b up
+ip addr add 1.1.1.2/24 dev veth-b
+ping -c 3 1.1.1.1 || exit 1
+ip netns exec test1 rping -s -a 1.1.1.1&
+rdma link add rxe1 type rxe netdev veth-b
+rdma link
+
+#check if socket exist or not
+ss -lun | grep :4791
+
+rping -c -a 1.1.1.1 -d -v -C 3 || exit 1
+ip netns ls
+rdma link del rxe1
+
+#check if socket exist or not
+ss -lun | grep :4791
+
+ip netns exec test1 ss -lun | grep :4791
+ip netns exec test1 rdma link del rxe0
+ip netns exec test1 ss -lun | grep :4791
+ip netns del test1
+ip netns ls
+
+modprobe -v -r veth
+modprobe -v -r rdma_rxe
diff --git a/tools/testing/selftests/rdma/rxe_ipv6.sh b/tools/testing/selftests/rdma/rxe_ipv6.sh
new file mode 100755
index 000000000000..9337ac4fd13f
--- /dev/null
+++ b/tools/testing/selftests/rdma/rxe_ipv6.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+
+# Notes:
+#
+# 1. Before running this script, please disable the firewall, as it may
+# block UDP port 4791.
+
+# 2. This test script depends on the veth and tun drivers. Before running
+#  the script, please verify that both drivers are available by executing:
+#
+# modinfo tun
+# modinfo veth
+#
+# Make sure these commands return valid module information.
+
+# 3. ipv6 test.
+# While RXE is conventionally deployed over IPv4, it maintains
+# native support for IPv6. However, IPv6 implementations typically
+# receive less validation and performance tuning in standard use cases.
+exec > /dev/null
+# 1) create ipv6 net namespace
+ip netns add net6
+ip link add veth0 type veth peer name veth1
+ip link set veth1 netns net6
+ip netns exec net6 ip addr add 2001:db8::1/64 dev veth1
+ip netns exec net6 ip link set veth1 up
+
+# 2) Add rdma link
+ip netns exec net6 rdma link add rxe6 type rxe netdev veth1
+
+# 3) check IPv6 UDP 4791 listening port
+if ! ip netns exec net6 ss -ul6n | grep :4791; then
+	echo "Error: udp port 4791 exists"
+	exit 1
+fi
+
+# 4) Delete rxe link
+ip netns exec net6 rdma link del rxe6
+if ip netns exec net6 ss -ul6n | grep :4791; then  # result should be null
+	echo "Error: udp port 4791 exists"
+	exit 1
+fi
+
+# 5) delete net6
+ip netns del net6
+
+modprobe -v -r rdma_rxe
diff --git a/tools/testing/selftests/rdma/socket_with_rxe.sh b/tools/testing/selftests/rdma/socket_with_rxe.sh
new file mode 100755
index 000000000000..676aec63babd
--- /dev/null
+++ b/tools/testing/selftests/rdma/socket_with_rxe.sh
@@ -0,0 +1,64 @@
+#!/bin/sh
+
+# Notes:
+#
+# 1. Before running this script, please disable the firewall, as it may
+# block UDP port 4791.
+
+# 2. This test script depends on the veth and tun drivers. Before running
+#  the script, please verify that both drivers are available by executing:
+#
+# modinfo tun
+#
+# Make sure these commands return valid module information.
+
+# Check if socket exist or not
+exec > /dev/null
+ip tuntap add mode tun tun0
+ip -4 a
+ip addr add 1.1.1.1/24 dev tun0
+ip link set tun0 up
+ip -4 a
+rdma link add rxe0 type rxe netdev tun0
+rdma link
+ret=`ss -lun | grep :4791`
+if [ X"$ret" == X"" ]; then
+	echo "Error: udp port 4791 does not exist"
+	exit 1
+fi
+
+ip tuntap add mode tun tun1
+ip -4 a
+ip addr add 2.2.2.2/24 dev tun1
+ip link set tun1 up
+rdma link add rxe1 type rxe netdev tun1
+rdma link
+ret=`ss -lun | grep :4791`
+if [ X"$ret" == X"" ]; then
+	echo "Error: udp port 4791 does not exist"
+	exit 1
+fi
+
+rdma link del rxe1
+rdma link
+ret=`ss -lun | grep :4791`
+if [ X"$ret" == X"" ]; then
+	echo "Error: udp port 4791 doese not exist"
+	exit 1
+fi
+
+rdma link del rxe0
+rdma link
+if ss -lun | grep :4791; then
+	echo "Error: udp port 4791 exists"
+	exit 1
+fi
+
+ip addr del 2.2.2.2/24 dev tun1
+ip tuntap del mode tun tun1
+
+ip addr del 1.1.1.1/24 dev tun0
+ip tuntap del mode tun tun0
+
+modprobe -v -r tun
+modprobe -v -r rdma_rxe
-- 
2.52.0