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-rw-r--r--tools/testing/selftests/bpf/progs/recvmsg6_prog.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/recvmsg6_prog.c b/tools/testing/selftests/bpf/progs/recvmsg6_prog.c
new file mode 100644
index 000000000..27dfb21b2
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/recvmsg6_prog.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/stddef.h>
+#include <linux/bpf.h>
+#include <linux/in6.h>
+#include <sys/socket.h>
+
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_endian.h>
+
+#include <bpf_sockopt_helpers.h>
+
+#define SERV6_IP_0 0xfaceb00c /* face:b00c:1234:5678::abcd */
+#define SERV6_IP_1 0x12345678
+#define SERV6_IP_2 0x00000000
+#define SERV6_IP_3 0x0000abcd
+#define SERV6_PORT 6060
+
+SEC("cgroup/recvmsg6")
+int recvmsg6_prog(struct bpf_sock_addr *ctx)
+{
+ struct bpf_sock *sk;
+ __u32 user_ip4;
+ __u16 user_port;
+
+ sk = ctx->sk;
+ if (!sk)
+ return 1;
+
+ if (sk->family != AF_INET6)
+ return 1;
+
+ if (ctx->type != SOCK_STREAM && ctx->type != SOCK_DGRAM)
+ return 1;
+
+ if (!get_set_sk_priority(ctx))
+ return 1;
+
+ ctx->user_ip6[0] = bpf_htonl(SERV6_IP_0);
+ ctx->user_ip6[1] = bpf_htonl(SERV6_IP_1);
+ ctx->user_ip6[2] = bpf_htonl(SERV6_IP_2);
+ ctx->user_ip6[3] = bpf_htonl(SERV6_IP_3);
+ ctx->user_port = bpf_htons(SERV6_PORT);
+
+ return 1;
+}
+
+char _license[] SEC("license") = "GPL";