This patch lays out a set of SYSCALL programs that can be used to invoke
the socket operation kfuncs in bpf_testmod, allowing a test program to
manipulate kernel socket operations from userspace.
Signed-off-by: Jordan Rife <jrife@xxxxxxxxxx>
---
.../selftests/bpf/progs/sock_addr_kern.c | 65 +++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100644 tools/testing/selftests/bpf/progs/sock_addr_kern.c
diff --git a/tools/testing/selftests/bpf/progs/sock_addr_kern.c b/tools/testing/selftests/bpf/progs/sock_addr_kern.c
new file mode 100644
index 0000000000000..8386bb15ccdc1
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/sock_addr_kern.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2024 Google LLC */
+#include <vmlinux.h>
+#include <bpf/bpf_helpers.h>
+#include "../bpf_testmod/bpf_testmod_kfunc.h"
+
+SEC("syscall")
+int init_sock(struct init_sock_args *args)
+{
+ bpf_kfunc_init_sock(args);
+
+ return 0;
+}
+
+SEC("syscall")
+int close_sock(void *ctx)
+{
+ bpf_kfunc_close_sock();
+
+ return 0;
+}
+
+SEC("syscall")
+int kernel_connect(struct addr_args *args)
+{
+ return bpf_kfunc_call_kernel_connect(args);
+}
+
+SEC("syscall")
+int kernel_bind(struct addr_args *args)
+{
+ return bpf_kfunc_call_kernel_bind(args);
+}
+
+SEC("syscall")
+int kernel_listen(struct addr_args *args)
+{
+ return bpf_kfunc_call_kernel_listen();
+}
+
+SEC("syscall")
+int kernel_sendmsg(struct sendmsg_args *args)
+{
+ return bpf_kfunc_call_kernel_sendmsg(args);
+}
+
+SEC("syscall")
+int sock_sendmsg(struct sendmsg_args *args)
+{
+ return bpf_kfunc_call_sock_sendmsg(args);
+}
+
+SEC("syscall")
+int kernel_getsockname(struct addr_args *args)
+{
+ return bpf_kfunc_call_kernel_getsockname(args);
+}
+
+SEC("syscall")
+int kernel_getpeername(struct addr_args *args)
+{
+ return bpf_kfunc_call_kernel_getpeername(args);
+}
+
+char _license[] SEC("license") = "GPL";
--
2.44.0.769.g3c40516874-goog
