[PATCH] RDMA/selftests: Fix the kernel config fragment

[Sasha Levin <sashal@kernel.org>]

The config fragment lists bare option names with no values:

  CONFIG_TUN
  CONFIG_VETH
  CONFIG_DUMMY
  CONFIG_NET_NS
  CONFIG_RDMA_RXE

which is not valid Kconfig syntax. When the fragment is merged, for
example by "make kselftest-merge" or by CI systems, the lines are
rejected:

  .config:5514:warning: unexpected data: CONFIG_TUN
  .config:5515:warning: unexpected data: CONFIG_VETH
  .config:5516:warning: unexpected data: CONFIG_DUMMY

and none of the options gets enabled, so the rxe tests skip or fail
for lack of the modules they load.

Give each option a value. The scripts load and unload tun, veth,
dummy and rdma_rxe with modprobe, so build those as modules.
RDMA_RXE also depends on INFINIBAND, and rxe_rping_between_netns.sh
runs rping, which needs the RDMA CM userspace interface provided by
INFINIBAND_USER_ACCESS, so add both.

Found by KernelCI kselftest builds.

Fixes: e01027cab38a ("RDMA/rxe: Add testcase for net namespace rxe")
Fixes: ecdcc8a455b7 ("RDMA/selftests: Add rxe_netns_names test")
Assisted-by: LLM
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/testing/selftests/rdma/config | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/rdma/config b/tools/testing/selftests/rdma/config
index e1ff54ec0f579..1be43c4274bb8 100644
--- a/tools/testing/selftests/rdma/config
+++ b/tools/testing/selftests/rdma/config
@@ -1,5 +1,7 @@
-CONFIG_TUN
-CONFIG_VETH
-CONFIG_DUMMY
-CONFIG_NET_NS
-CONFIG_RDMA_RXE
+CONFIG_TUN=m
+CONFIG_VETH=m
+CONFIG_DUMMY=m
+CONFIG_NET_NS=y
+CONFIG_INFINIBAND=m
+CONFIG_INFINIBAND_USER_ACCESS=m
+CONFIG_RDMA_RXE=m
-- 
2.53.0