[PATCH 3/5] selftests: net: run reuseport tests in netns to avoid port conflicts
From: Aleksei Oladko <hidden>
Date: 2026-01-20 23:06:18
Also in:
linux-kselftest, lkml
Subsystem:
kernel selftest framework, networking [general], the rest · Maintainers:
Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Konstantin Khorenko <redacted> Some net kselftests use fixed ports which overlap with process-exporter service already running on the host. When such a conflict happens, the test fail with: failed to bind receive socket: Address already in use Instead of changing port numbers, run the affected tests in isolated network namespace to avoid conflicts with running daemons. Signed-off-by: Konstantin Khorenko <redacted> --- tools/testing/selftests/net/Makefile | 12 ++++++++---- tools/testing/selftests/net/reuseport_bpf.sh | 4 ++++ tools/testing/selftests/net/reuseport_bpf_cpu.sh | 4 ++++ tools/testing/selftests/net/reuseport_bpf_numa.sh | 4 ++++ tools/testing/selftests/net/reuseport_dualstack.sh | 4 ++++ 5 files changed, 24 insertions(+), 4 deletions(-) create mode 100755 tools/testing/selftests/net/reuseport_bpf.sh create mode 100755 tools/testing/selftests/net/reuseport_bpf_cpu.sh create mode 100755 tools/testing/selftests/net/reuseport_bpf_numa.sh create mode 100755 tools/testing/selftests/net/reuseport_dualstack.sh
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index b66ba04f19d9..a160e0d816d9 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile@@ -64,6 +64,10 @@ TEST_PROGS := \ psock_snd.sh \ reuseaddr_ports_exhausted.sh \ reuseport_addr_any.sh \ + reuseport_bpf.sh \ + reuseport_bpf_cpu.sh \ + reuseport_bpf_numa.sh \ + reuseport_dualstack.sh route_hint.sh \ route_localnet.sh \ rps_default_mask.sh \
@@ -142,6 +146,10 @@ TEST_GEN_FILES := \ psock_tpacket \ reuseaddr_ports_exhausted \ reuseport_addr_any \ + reuseport_bpf \ + reuseport_bpf_cpu \ + reuseport_bpf_numa \ + reuseport_dualstack \ rxtimestamp \ sctp_hello \ skf_net_off \
@@ -169,10 +177,6 @@ TEST_GEN_PROGS := \ ipv6_fragmentation \ proc_net_pktgen \ reuseaddr_conflict \ - reuseport_bpf \ - reuseport_bpf_cpu \ - reuseport_bpf_numa \ - reuseport_dualstack \ sk_bind_sendto_listen \ sk_connect_zero_addr \ sk_so_peek_off \
diff --git a/tools/testing/selftests/net/reuseport_bpf.sh b/tools/testing/selftests/net/reuseport_bpf.sh
new file mode 100755
index 000000000000..75014a5462a1
--- /dev/null
+++ b/tools/testing/selftests/net/reuseport_bpf.sh@@ -0,0 +1,4 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +./in_netns.sh ./reuseport_bpf
diff --git a/tools/testing/selftests/net/reuseport_bpf_cpu.sh b/tools/testing/selftests/net/reuseport_bpf_cpu.sh
new file mode 100755
index 000000000000..243dc5bee014
--- /dev/null
+++ b/tools/testing/selftests/net/reuseport_bpf_cpu.sh@@ -0,0 +1,4 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +./in_netns.sh ./reuseport_bpf_cpu
diff --git a/tools/testing/selftests/net/reuseport_bpf_numa.sh b/tools/testing/selftests/net/reuseport_bpf_numa.sh
new file mode 100755
index 000000000000..eccab95a3202
--- /dev/null
+++ b/tools/testing/selftests/net/reuseport_bpf_numa.sh@@ -0,0 +1,4 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +./in_netns.sh ./reuseport_bpf_numa
diff --git a/tools/testing/selftests/net/reuseport_dualstack.sh b/tools/testing/selftests/net/reuseport_dualstack.sh
new file mode 100755
index 000000000000..82cc8e345a83
--- /dev/null
+++ b/tools/testing/selftests/net/reuseport_dualstack.sh@@ -0,0 +1,4 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +./in_netns.sh ./reuseport_dualstack
--
2.43.0