git: a0e5fe32d969 - stable/14 - if_ovpn tests: basic float test case

The branch stable/14 has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=a0e5fe32d969c7775da4b16f8ecfa93378f589d4

commit a0e5fe32d969c7775da4b16f8ecfa93378f589d4
Author:     Kristof Provost <kp@FreeBSD.org>
AuthorDate: 2025-07-22 16:20:56 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2025-08-13 13:24:52 +0000

    if_ovpn tests: basic float test case
    
    Reviewed by:    markj
    MFC after:      3 weeks
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
    Differential Revision:  https://reviews.freebsd.org/D51469
    
    (cherry picked from commit ad1b5df8884c0fd7d265526a4980c1fd9c67fb90)
---
 tests/sys/net/if_ovpn/if_ovpn.sh | 91 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)

diff --git a/tests/sys/net/if_ovpn/if_ovpn.sh b/tests/sys/net/if_ovpn/if_ovpn.sh
index c7e2f928e340..26a81ea9100c 100644
--- a/tests/sys/net/if_ovpn/if_ovpn.sh
+++ b/tests/sys/net/if_ovpn/if_ovpn.sh
@@ -1280,6 +1280,96 @@ multihome6_cleanup()
 	ovpn_cleanup
 }
 
+atf_test_case "float" "cleanup"
+float_head()
+{
+	atf_set descr 'Test peer float notification'
+	atf_set require.user root
+}
+
+float_body()
+{
+	ovpn_init
+
+	l=$(vnet_mkepair)
+
+	vnet_mkjail a ${l}a
+	jexec a ifconfig ${l}a 192.0.2.1/24 up
+	jexec a ifconfig lo0 127.0.0.1/8 up
+	vnet_mkjail b ${l}b
+	jexec b ifconfig ${l}b 192.0.2.2/24 up
+
+	# Sanity check
+	atf_check -s exit:0 -o ignore jexec a ping -c 1 192.0.2.2
+
+	ovpn_start a "
+		dev ovpn0
+		dev-type tun
+		proto udp4
+
+		cipher AES-256-GCM
+		auth SHA256
+
+		local 192.0.2.1
+		server 198.51.100.0 255.255.255.0
+		ca $(atf_get_srcdir)/ca.crt
+		cert $(atf_get_srcdir)/server.crt
+		key $(atf_get_srcdir)/server.key
+		dh $(atf_get_srcdir)/dh.pem
+
+		mode server
+		script-security 2
+		auth-user-pass-verify /usr/bin/true via-env
+		topology subnet
+
+		keepalive 2 10
+
+		management 192.0.2.1 1234
+	"
+	ovpn_start b "
+		dev tun0
+		dev-type tun
+
+		client
+
+		remote 192.0.2.1
+		auth-user-pass $(atf_get_srcdir)/user.pass
+
+		ca $(atf_get_srcdir)/ca.crt
+		cert $(atf_get_srcdir)/client.crt
+		key $(atf_get_srcdir)/client.key
+		dh $(atf_get_srcdir)/dh.pem
+
+		keepalive 2 10
+	"
+
+	# Give the tunnel time to come up
+	sleep 10
+
+	atf_check -s exit:0 -o ignore jexec b ping -c 3 198.51.100.1
+
+	# We expect the client on 192.0.2.2
+	if ! echo "status" | jexec a nc -N 192.0.2.1 1234 | grep 192.0.2.2; then
+		atf_fail "Client not found in status list!"
+	fi
+
+	# Now change the client IP
+	jexec b ifconfig ${l}b 192.0.2.3/24 up
+
+	# And wait for keepalives to trigger the float notification
+	sleep 5
+
+	# So the client now has the new address in userspace
+	if ! echo "status" | jexec a nc -N 192.0.2.1 1234 | grep 192.0.2.3; then
+		atf_fail "Client not found in status list!"
+	fi
+}
+
+float_cleanup()
+{
+	ovpn_cleanup
+}
+
 atf_init_test_cases()
 {
 	atf_add_test_case "4in4"
@@ -1297,4 +1387,5 @@ atf_init_test_cases()
 	atf_add_test_case "gcm_128"
 	atf_add_test_case "multihome4"
 	atf_add_test_case "multihome6"
+	atf_add_test_case "float"
 }