git: 086a3cb4b850 - main - pf tests: basic source limiters test case

The branch main has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=086a3cb4b850184448f0f127ddd8f875a3070164

commit 086a3cb4b850184448f0f127ddd8f875a3070164
Author:     Kristof Provost <kp@FreeBSD.org>
AuthorDate: 2026-01-07 17:06:55 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2026-01-14 06:44:41 +0000

    pf tests: basic source limiters test case
    
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
---
 tests/sys/netpfil/pf/limiters.sh | 58 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/tests/sys/netpfil/pf/limiters.sh b/tests/sys/netpfil/pf/limiters.sh
index 17a66ed12c5e..3f70c8e79caa 100644
--- a/tests/sys/netpfil/pf/limiters.sh
+++ b/tests/sys/netpfil/pf/limiters.sh
@@ -130,8 +130,66 @@ state_rate_cleanup()
 	pft_cleanup
 }
 
+atf_test_case "source_basic" "cleanup"
+source_basic_head()
+{
+	atf_set descr 'Basic source limiter test'
+	atf_set require.user root
+}
+
+source_basic_body()
+{
+	pft_init
+
+	epair=$(vnet_mkepair)
+
+	ifconfig ${epair}a 192.0.2.2/24 up
+	ifconfig ${epair}a inet alias 192.0.2.3/24 up
+
+	vnet_mkjail alcatraz ${epair}b
+	jexec alcatraz ifconfig ${epair}b 192.0.2.1/24 up
+
+	# Sanity check
+	atf_check -s exit:0 -o ignore \
+	    ping -S 192.0.2.2 -c 1 192.0.2.1
+	atf_check -s exit:0 -o ignore \
+	    ping -S 192.0.2.3 -c 1 192.0.2.1
+
+	jexec alcatraz pfctl -e
+
+	# Allow up to one source for ICMP.
+	pft_set_rules alcatraz \
+	    "set timeout icmp.error 120" \
+	    "source limiter \"server\" id 1 entries 128 limit 1" \
+	    "block in proto icmp" \
+	    "pass in proto icmp source limiter \"server\""
+
+	atf_check -s exit:0 -o ignore \
+	    ping -S 192.0.2.2 -c 2 192.0.2.1
+
+	# This should now fail
+	atf_check -s exit:2 -o ignore \
+	    ping -S 192.0.2.2 -c 2 192.0.2.1
+
+	jexec alcatraz pfctl -sLimiterSrcs
+	hardlim=$(jexec alcatraz pfctl -sLimiterSrcs | awk 'NR>1 { print $5; }')
+	if [ $hardlim -eq 0 ]; then
+		atf_fail "Hard limit not incremented"
+	fi
+
+	# However, a different source will succeed
+	atf_check -s exit:0 -o ignore \
+	    ping -S 192.0.2.3 -c 2 192.0.2.1
+}
+
+source_basic_cleanup()
+{
+	pft_cleanup
+}
+
 atf_init_test_cases()
 {
 	atf_add_test_case "state_basic"
 	atf_add_test_case "state_rate"
+	atf_add_test_case "source_basic"
 }