From: Mingyi Zhang <zhangmingyi5@xxxxxxxxxx>
We try to use bpf_set/getsockopt to set/get TCP_ULP in sockops, and "tls"
need connect is established.To avoid impacting other test cases, I have
written a separate test case file.
Signed-off-by: Mingyi Zhang <zhangmingyi5@xxxxxxxxxx>
Signed-off-by: Xin Liu <liuxin350@xxxxxxxxxx>
---
.../bpf/prog_tests/setget_sockopt_tcp_ulp.c | 78 +++++++++++++++++++
.../bpf/progs/setget_sockopt_tcp_ulp.c | 33 ++++++++
2 files changed, 111 insertions(+)
create mode 100644 tools/testing/selftests/bpf/prog_tests/setget_sockopt_tcp_ulp.c
create mode 100644 tools/testing/selftests/bpf/progs/setget_sockopt_tcp_ulp.c
diff --git a/tools/testing/selftests/bpf/prog_tests/setget_sockopt_tcp_ulp.c b/tools/testing/selftests/bpf/prog_tests/setget_sockopt_tcp_ulp.c
new file mode 100644
index 000000000000..748da2c7d255
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/setget_sockopt_tcp_ulp.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) Meta Platforms, Inc. and affiliates. */
+
+#define _GNU_SOURCE
+#include <net/if.h>
+
+#include "test_progs.h"
+#include "network_helpers.h"
+
+#include "setget_sockopt_tcp_ulp.skel.h"
+
+#define CG_NAME "/setget-sockopt-tcp-ulp-test"
+
+static const char addr4_str[] = "127.0.0.1";
+static const char addr6_str[] = "::1";
+static struct setget_sockopt_tcp_ulp *skel;
+static int cg_fd;
+
+static int create_netns(void)
+{
+ if (!ASSERT_OK(unshare(CLONE_NEWNET), "create netns"))
+ return -1;
+ if (!ASSERT_OK(system("ip link set dev lo up"), "set lo up"))
+ return -1;
+ return 0;
+}
+
+static int modprobe_tls(void)
+{
+ if (!ASSERT_OK(system("modprobe tls"), "tls modprobe failed"))
+ return -1;
+ return 0;
+}
+
+static void test_tcp_ulp(int family)
+{
+ struct setget_sockopt_tcp_ulp__bss *bss = skel->bss;
+ int sfd, cfd;
+
+ memset(bss, 0, sizeof(*bss));
+ sfd = start_server(family, SOCK_STREAM,
+ family == AF_INET6 ? addr6_str : addr4_str, 0, 0);
+ if (!ASSERT_GE(sfd, 0, "start_server"))
+ return;
+
+ cfd = connect_to_fd(sfd, 0);
+ if (!ASSERT_GE(cfd, 0, "connect_to_fd_server")) {
+ close(sfd);
+ return;
+ }
+ close(sfd);
+ close(cfd);
+
+ ASSERT_EQ(bss->nr_tcp_ulp, 3, "nr_tcp_ulp");
+}
+
+void test_setget_sockopt_tcp_ulp(void)
+{
+ cg_fd = test__join_cgroup(CG_NAME);
+ if (cg_fd < 0)
+ return;
+ if (create_netns() && modprobe_tls())
+ goto done;
+ skel = setget_sockopt_tcp_ulp__open();
+ if (!ASSERT_OK_PTR(skel, "open skel"))
+ goto done;
+ if (!ASSERT_OK(setget_sockopt_tcp_ulp__load(skel), "load skel"))
+ goto done;
+ skel->links.skops_sockopt_tcp_ulp =
+ bpf_program__attach_cgroup(skel->progs.skops_sockopt_tcp_ulp, cg_fd);
+ if (!ASSERT_OK_PTR(skel->links.skops_sockopt_tcp_ulp, "attach_cgroup"))
+ goto done;
+ test_tcp_ulp(AF_INET);
+ test_tcp_ulp(AF_INET6);
+done:
+ setget_sockopt_tcp_ulp__destroy(skel);
+ close(cg_fd);
+}
diff --git a/tools/testing/selftests/bpf/progs/setget_sockopt_tcp_ulp.c b/tools/testing/selftests/bpf/progs/setget_sockopt_tcp_ulp.c
new file mode 100644
index 000000000000..bd1009766463
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/setget_sockopt_tcp_ulp.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) Meta Platforms, Inc. and affiliates. */
+
+#include "vmlinux.h"
+#include "bpf_tracing_net.h"
+#include <bpf/bpf_helpers.h>
+
+int nr_tcp_ulp;
+
+SEC("sockops")
+int skops_sockopt_tcp_ulp(struct bpf_sock_ops *skops)
+{
+ static const char target_ulp[] = "tls";
+ char verify_ulp[sizeof(target_ulp)];
+
+ switch (skops->op) {
+ case BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB:
+ if (bpf_setsockopt(skops, IPPROTO_TCP, TCP_ULP, (void *)target_ulp,
+ sizeof(target_ulp)) != 0)
+ return 1;
+ nr_tcp_ulp++;
+ if (bpf_getsockopt(skops, IPPROTO_TCP, TCP_ULP, verify_ulp,
+ sizeof(verify_ulp)) != 0)
+ return 1;
+ nr_tcp_ulp++;
+ if (bpf_strncmp(verify_ulp, sizeof(target_ulp), "tls") != 0)
+ return 1;
+ nr_tcp_ulp++;
+ }
+ return 1;
+}
+
+char _license[] SEC("license") = "GPL";
\ No newline at end of file
--
2.43.0
