Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
RDMA/rxe: Add testcase for net namespace rxe
Add 4 testcases for rxe with net namespace.
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Link: https://patch.msgid.link/20260313023058.13020-5-yanjun.zhu@linux.dev
Signed-off-by: Leon Romanovsky <leon@kernel.org>
authored by
Zhu Yanjun
and committed by
Leon Romanovsky
e01027ca
f1327abd
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MAINTAINERS
+2
MAINTAINERS
···
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F: include/uapi/rdma/
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F: samples/bpf/ibumad_kern.c
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F: samples/bpf/ibumad_user.c
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F: tools/testing/selftests/rdma/
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INGENIC JZ4780 NAND DRIVER
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M: Harvey Hunt <harveyhuntnexus@gmail.com>
···
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S: Supported
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F: drivers/infiniband/sw/rxe/
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F: include/uapi/rdma/rdma_user_rxe.h
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F: tools/testing/selftests/rdma/rxe*
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SOFTLOGIC 6x10 MPEG CODEC
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M: Bluecherry Maintainers <maintainers@bluecherrydvr.com>
+1
tools/testing/selftests/Makefile
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tools/testing/selftests/Makefile
+7
tools/testing/selftests/rdma/Makefile
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tools/testing/selftests/rdma/Makefile
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tools/testing/selftests/rdma/rxe_ipv6.sh
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tools/testing/selftests/rdma/rxe_ipv6.sh
···
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#!/bin/bash
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# Configuration
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NS_NAME="net6"
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VETH_HOST="veth0"
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VETH_NS="veth1"
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RXE_NAME="rxe6"
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PORT=4791
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IP6_ADDR="2001:db8::1/64"
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exec > /dev/null
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# Cleanup function to run on exit (even on failure)
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cleanup() {
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ip netns del "$NS_NAME" 2>/dev/null
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modprobe -r rdma_rxe 2>/dev/null
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echo "Done."
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}
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trap cleanup EXIT
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# 1. Prerequisites check
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for mod in tun veth rdma_rxe; do
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if ! modinfo "$mod" >/dev/null 2>&1; then
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echo "Error: Kernel module '$mod' not found."
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exit 1
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fi
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done
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modprobe rdma_rxe
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# 2. Setup Namespace and Networking
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echo "Setting up IPv6 network namespace..."
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ip netns add "$NS_NAME"
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ip link add "$VETH_HOST" type veth peer name "$VETH_NS"
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ip link set "$VETH_NS" netns "$NS_NAME"
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ip netns exec "$NS_NAME" ip addr add "$IP6_ADDR" dev "$VETH_NS"
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ip netns exec "$NS_NAME" ip link set "$VETH_NS" up
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ip link set "$VETH_HOST" up
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# 3. Add RDMA Link
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echo "Adding RDMA RXE link..."
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if ! ip netns exec "$NS_NAME" rdma link add "$RXE_NAME" type rxe netdev "$VETH_NS"; then
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echo "Error: Failed to create RXE link."
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exit 1
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fi
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# 4. Verification: Port should be listening
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# Using -H to skip headers and -q for quiet exit codes
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if ! ip netns exec "$NS_NAME" ss -Hul6n sport = :$PORT | grep -q ":$PORT"; then
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echo "Error: UDP port $PORT is NOT listening after link creation."
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exit 1
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fi
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echo "Verified: Port $PORT is active."
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# 5. Removal and Verification
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echo "Deleting RDMA link..."
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ip netns exec "$NS_NAME" rdma link del "$RXE_NAME"
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if ip netns exec "$NS_NAME" ss -Hul6n sport = :$PORT | grep -q ":$PORT"; then
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echo "Error: UDP port $PORT still active after link deletion."
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exit 1
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fi
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echo "Verified: Port $PORT closed successfully."
+85
tools/testing/selftests/rdma/rxe_rping_between_netns.sh
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tools/testing/selftests/rdma/rxe_rping_between_netns.sh
···
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#!/bin/bash
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# Configuration
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NS="test1"
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VETH_A="veth-a"
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VETH_B="veth-b"
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IP_A="1.1.1.1"
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IP_B="1.1.1.2"
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PORT=4791
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exec > /dev/null
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# --- Cleanup Routine ---
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cleanup() {
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echo "Cleaning up resources..."
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rdma link del rxe1 2>/dev/null
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ip netns exec "$NS" rdma link del rxe0 2>/dev/null
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ip link delete "$VETH_B" 2>/dev/null
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ip netns del "$NS" 2>/dev/null
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modprobe -r rdma_rxe 2>/dev/null
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}
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trap cleanup EXIT
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# --- Prerequisite Checks ---
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if [[ $EUID -ne 0 ]]; then
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echo "This script must be run as root"
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exit 1
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fi
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modprobe rdma_rxe || { echo "Failed to load rdma_rxe"; exit 1; }
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# --- Setup Network Topology ---
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echo "Setting up network namespace and veth pair..."
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ip netns add "$NS"
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ip link add "$VETH_A" type veth peer name "$VETH_B"
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ip link set "$VETH_A" netns "$NS"
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# Configure Namespace side (test1)
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ip netns exec "$NS" ip addr add "$IP_A/24" dev "$VETH_A"
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ip netns exec "$NS" ip link set "$VETH_A" up
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ip netns exec "$NS" ip link set lo up
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# Configure Host side
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ip addr add "$IP_B/24" dev "$VETH_B"
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ip link set "$VETH_B" up
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# --- RXE Link Creation ---
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echo "Creating RDMA links..."
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ip netns exec "$NS" rdma link add rxe0 type rxe netdev "$VETH_A"
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rdma link add rxe1 type rxe netdev "$VETH_B"
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# Verify UDP 4791 is listening
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check_port() {
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local target=$1 # "host" or "ns"
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if [ "$target" == "ns" ]; then
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ip netns exec "$NS" ss -Huln sport == :$PORT | grep -q ":$PORT"
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else
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ss -Huln sport == :$PORT | grep -q ":$PORT"
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fi
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}
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check_port "ns" || { echo "Error: RXE port not listening in namespace"; exit 1; }
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check_port "host" || { echo "Error: RXE port not listening on host"; exit 1; }
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# --- Connectivity Test ---
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echo "Testing connectivity with rping..."
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ping -c 2 -W 1 "$IP_A" > /dev/null || { echo "Ping failed"; exit 1; }
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# Start rping server in background
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ip netns exec "$NS" rping -s -a "$IP_A" -v > /dev/null 2>&1 &
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RPING_PID=$!
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sleep 1 # Allow server to bind
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# Run rping client
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rping -c -a "$IP_A" -d -v -C 3
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RESULT=$?
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kill $RPING_PID 2>/dev/null
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if [ $RESULT -eq 0 ]; then
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echo "SUCCESS: RDMA traffic verified."
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else
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echo "FAILURE: rping failed."
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exit 1
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fi
+76
tools/testing/selftests/rdma/rxe_socket_with_netns.sh
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tools/testing/selftests/rdma/rxe_socket_with_netns.sh
···
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#!/bin/bash
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# Configuration
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PORT=4791
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MODS=("tun" "rdma_rxe")
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exec > /dev/null
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# --- Helper: Cleanup Routine ---
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cleanup() {
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echo "Cleaning up resources..."
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rdma link del rxe1 2>/dev/null
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rdma link del rxe0 2>/dev/null
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ip link del tun0 2>/dev/null
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ip link del tun1 2>/dev/null
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for m in "${MODS[@]}"; do modprobe -r "$m" 2>/dev/null; done
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}
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# Ensure cleanup runs on script exit or interrupt
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trap cleanup EXIT
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# --- Phase 1: Environment Check ---
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if [[ $EUID -ne 0 ]]; then
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echo "Error: This script must be run as root."
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exit 1
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fi
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for m in "${MODS[@]}"; do
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modprobe "$m" || { echo "Error: Failed to load $m"; exit 1; }
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done
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# --- Phase 2: Create Interfaces & RXE Links ---
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echo "Creating tun0 (1.1.1.1) and rxe0..."
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ip tuntap add mode tun tun0
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ip addr add 1.1.1.1/24 dev tun0
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ip link set tun0 up
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rdma link add rxe0 type rxe netdev tun0
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# Verify port 4791 is listening
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if ! ss -Huln sport = :$PORT | grep -q ":$PORT"; then
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echo "Error: UDP port $PORT not found after rxe0 creation"
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exit 1
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fi
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echo "Creating tun1 (2.2.2.2) and rxe1..."
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ip tuntap add mode tun tun1
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ip addr add 2.2.2.2/24 dev tun1
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ip link set tun1 up
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rdma link add rxe1 type rxe netdev tun1
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# Verify port 4791 is still listening
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if ! ss -Huln sport = :$PORT | grep -q ":$PORT"; then
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echo "Error: UDP port $PORT missing after rxe1 creation"
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exit 1
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fi
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# --- Phase 3: Targeted Deletion ---
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echo "Deleting rxe1..."
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rdma link del rxe1
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# Port should still be active because rxe0 is still alive
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if ! ss -Huln sport = :$PORT | grep -q ":$PORT"; then
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echo "Error: UDP port $PORT closed prematurely"
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exit 1
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fi
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echo "Deleting rxe0..."
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rdma link del rxe0
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# Port should now be gone
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if ss -Huln sport = :$PORT | grep -q ":$PORT"; then
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echo "Error: UDP port $PORT still exists after all links deleted"
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exit 1
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fi
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echo "Test passed successfully."
+63
tools/testing/selftests/rdma/rxe_test_NETDEV_UNREGISTER.sh
+63
tools/testing/selftests/rdma/rxe_test_NETDEV_UNREGISTER.sh
···
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#!/bin/bash
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# Configuration
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DEV_NAME="tun0"
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RXE_NAME="rxe0"
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RDMA_PORT=4791
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exec > /dev/null
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# --- Cleanup Routine ---
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# Ensures environment is clean even if the script hits an error
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cleanup() {
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echo "Performing cleanup..."
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rdma link del $RXE_NAME 2>/dev/null
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ip link del $DEV_NAME 2>/dev/null
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modprobe -r rdma_rxe 2>/dev/null
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}
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trap cleanup EXIT
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# 1. Dependency Check
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if ! modinfo rdma_rxe >/dev/null 2>&1; then
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echo "Error: rdma_rxe module not found."
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exit 1
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fi
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modprobe rdma_rxe
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# 2. Setup TUN Device
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echo "Creating $DEV_NAME..."
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ip tuntap add mode tun "$DEV_NAME"
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ip addr add 1.1.1.1/24 dev "$DEV_NAME"
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ip link set "$DEV_NAME" up
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# 3. Attach RXE Link
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echo "Attaching RXE link $RXE_NAME to $DEV_NAME..."
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rdma link add "$RXE_NAME" type rxe netdev "$DEV_NAME"
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# 4. Verification: Port Check
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# Use -H (no header) and -q (quiet) for cleaner scripting logic
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if ! ss -Huln sport == :$RDMA_PORT | grep -q ":$RDMA_PORT"; then
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echo "Error: UDP port $RDMA_PORT is not listening."
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exit 1
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fi
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echo "Verified: RXE is listening on UDP $RDMA_PORT."
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# 5. Trigger NETDEV_UNREGISTER
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# We delete the underlying device without deleting the RDMA link first.
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echo "Triggering NETDEV_UNREGISTER by deleting $DEV_NAME..."
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ip link del "$DEV_NAME"
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# 6. Final Verification
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# The RXE link and the UDP port should be automatically cleaned up by the kernel.
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if rdma link show "$RXE_NAME" 2>/dev/null; then
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echo "Error: $RXE_NAME still exists after netdev removal."
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exit 1
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fi
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if ss -Huln sport == :$RDMA_PORT | grep -q ":$RDMA_PORT"; then
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echo "Error: UDP port $RDMA_PORT still listening after netdev removal."
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exit 1
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fi
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echo "Success: NETDEV_UNREGISTER handled correctly."