diff mbox series

[net-next,3/3] selftest: netdevsim: add selftest for

Message ID 20231207172117.3671183-4-dw@davidwei.uk (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series netdevsim: link and forward skbs between | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/cc_maintainers fail 2 maintainers not CCed: linux-kselftest@vger.kernel.org shuah@kernel.org
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success net selftest script(s) already in Makefile
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch warning WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

David Wei Dec. 7, 2023, 5:21 p.m. UTC 
Connect two netdevsim ports in different namespaces together, then send
packets between them using socat.

Signed-off-by: David Wei <dw@davidwei.uk>
---
 .../drivers/net/netdevsim/forward.sh          | 111 ++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/netdevsim/forward.sh
diff mbox series

Patch

diff --git a/tools/testing/selftests/drivers/net/netdevsim/forward.sh b/tools/testing/selftests/drivers/net/netdevsim/forward.sh
new file mode 100755
index 000000000000..7464fb42576d
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/netdevsim/forward.sh
@@ -0,0 +1,111 @@ 
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
+
+NSIM_DEV_SYS=/sys/bus/netdevsim
+NSIM_DEV_DFS=/sys/kernel/debug/netdevsim/netdevsim
+
+socat_check()
+{
+	if [ ! -x "$(command -v socat)" ]; then
+		echo "socat command not found. Skipping test"
+		return 1
+	fi
+
+	return 0
+}
+
+setup_ns()
+{
+	set -e
+	ip netns add nssv
+	ip netns add nscl
+
+	ip link set eni1np1 netns nssv
+	ip link set eni2np1 netns nscl
+
+	ip netns exec nssv ip addr add '192.168.1.1/24' dev eni1np1
+	ip netns exec nscl ip addr add '192.168.1.2/24' dev eni2np1
+
+	ip netns exec nssv ip link set dev eni1np1 up
+	ip netns exec nscl ip link set dev eni2np1 up
+	set +e
+}
+
+cleanup_ns()
+{
+	ip netns del nscl
+	ip netns del nssv
+}
+
+###
+### Code start
+###
+
+modprobe netdevsim
+
+# linking
+
+echo 1 > ${NSIM_DEV_SYS}/new_device
+
+echo "2 0" > ${NSIM_DEV_DFS}1/ports/0/link 2>/dev/null
+if [ $? -eq 0 ]; then
+	echo "linking with non-existent netdevsim should fail"
+	return 1
+fi
+
+echo 2 > /sys/bus/netdevsim/new_device
+
+echo "2 0" > ${NSIM_DEV_DFS}1/ports/0/link
+if [ $? -ne 0 ]; then
+	echo "linking netdevsim1 port0 with netdevsim2 port0 should succeed"
+	return 1
+fi
+
+# argument error checking
+
+echo "2 1" > ${NSIM_DEV_DFS}1/ports/0/link 2>/dev/null
+if [ $? -eq 0 ]; then
+	echo "linking with non-existent port in a netdevsim should fail"
+	return 1
+fi
+
+echo "2 a" > ${NSIM_DEV_DFS}1/ports/0/link 2>/dev/null
+if [ $? -eq 0 ]; then
+	echo "invalid arg should fail"
+	return 1
+fi
+
+echo "2 0 1" > ${NSIM_DEV_DFS}1/ports/0/link 2>/dev/null
+if [ $? -eq 0 ]; then
+	echo "invalid arg should fail"
+	return 1
+fi
+
+# send/recv packets
+
+socat_check || return 1
+
+setup_ns
+
+tmp_file=$(mktemp)
+ip netns exec nssv socat TCP-LISTEN:1234,fork $tmp_file &
+pid=$!
+
+echo "HI" | ip netns exec nscl socat STDIN TCP:192.168.1.1:1234
+
+count=$(cat $tmp_file | wc -c)
+if [[ $count -ne 3 ]]; then
+	echo "expected 3 bytes, got $count"
+	return 1
+fi
+
+echo 2 > ${NSIM_DEV_SYS}/del_device
+
+kill $pid
+echo 1 > ${NSIM_DEV_SYS}/del_device
+
+cleanup_ns
+
+modprobe -r netdevsim
+
+exit 0