tools/testing/selftests/bpf/prog_tests/sock_addr.c

// SPDX-License-Identifier: GPL-2.0
#include <sys/un.h>

#include "test_progs.h"

#include "sock_addr_kern.skel.h"
#include "bind4_prog.skel.h"
#include "bind6_prog.skel.h"
#include "connect_unix_prog.skel.h"
#include "connect4_prog.skel.h"
#include "connect6_prog.skel.h"
#include "sendmsg4_prog.skel.h"
#include "sendmsg6_prog.skel.h"
#include "recvmsg4_prog.skel.h"
#include "recvmsg6_prog.skel.h"
#include "sendmsg_unix_prog.skel.h"
#include "recvmsg_unix_prog.skel.h"
#include "getsockname4_prog.skel.h"
#include "getsockname6_prog.skel.h"
#include "getsockname_unix_prog.skel.h"
#include "getpeername4_prog.skel.h"
#include "getpeername6_prog.skel.h"
#include "getpeername_unix_prog.skel.h"
#include "network_helpers.h"

#ifndef ENOTSUPP
# define ENOTSUPP 524
#endif

#define TEST_NS                 "sock_addr"
#define TEST_IF_PREFIX          "test_sock_addr"
#define TEST_IPV4               "127.0.0.4"
#define TEST_IPV6               "::6"

#define SERV4_IP                "192.168.1.254"
#define SERV4_REWRITE_IP        "127.0.0.1"
#define SRC4_IP                 "172.16.0.1"
#define SRC4_REWRITE_IP         TEST_IPV4
#define SERV4_PORT              4040
#define SERV4_REWRITE_PORT      4444

#define SERV6_IP                "face:b00c:1234:5678::abcd"
#define SERV6_REWRITE_IP        "::1"
#define SERV6_V4MAPPED_IP       "::ffff:192.168.0.4"
#define SRC6_IP                 "::1"
#define SRC6_REWRITE_IP         TEST_IPV6
#define WILDCARD6_IP            "::"
#define SERV6_PORT              6060
#define SERV6_REWRITE_PORT      6666

#define SERVUN_ADDRESS         "bpf_cgroup_unix_test"
#define SERVUN_REWRITE_ADDRESS "bpf_cgroup_unix_test_rewrite"
#define SRCUN_ADDRESS          "bpf_cgroup_unix_test_src"

#define save_errno_do(op) ({ int __save = errno; op; errno = __save; })

enum sock_addr_test_type {
	SOCK_ADDR_TEST_BIND,
	SOCK_ADDR_TEST_CONNECT,
	SOCK_ADDR_TEST_SENDMSG,
	SOCK_ADDR_TEST_RECVMSG,
	SOCK_ADDR_TEST_GETSOCKNAME,
	SOCK_ADDR_TEST_GETPEERNAME,
};

typedef void *(*load_fn)(int cgroup_fd,
			 enum bpf_attach_type attach_type,
			 bool expect_reject);
typedef void (*destroy_fn)(void *skel);

static int cmp_addr(const struct sockaddr_storage *addr1, socklen_t addr1_len,
		    const struct sockaddr_storage *addr2, socklen_t addr2_len,
		    bool cmp_port);

struct init_sock_args {
	int af;
	int type;
};

struct addr_args {
	char addr[sizeof(struct sockaddr_storage)];
	int addrlen;
};

struct sendmsg_args {
	struct addr_args addr;
	char msg[10];
	int msglen;
};

static struct sock_addr_kern *skel;

static int run_bpf_prog(const char *prog_name, void *ctx, int ctx_size)
{
	LIBBPF_OPTS(bpf_test_run_opts, topts);
	struct bpf_program *prog;
	int prog_fd, err;

	topts.ctx_in = ctx;
	topts.ctx_size_in = ctx_size;

	prog = bpf_object__find_program_by_name(skel->obj, prog_name);
	if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
		goto err;

	prog_fd = bpf_program__fd(prog);
	err = bpf_prog_test_run_opts(prog_fd, &topts);
	if (!ASSERT_OK(err, prog_name))
		goto err;

	err = topts.retval;
	errno = -topts.retval;
	goto out;
err:
	err = -1;
out:
	return err;
}

static int kernel_init_sock(int af, int type, int protocol)
{
	struct init_sock_args args = {
		.af = af,
		.type = type,
	};

	return run_bpf_prog("init_sock", &args, sizeof(args));
}

static int kernel_close_sock(int fd)
{
	return run_bpf_prog("close_sock", NULL, 0);
}

static int sock_addr_op(const char *name, struct sockaddr *addr,
			socklen_t *addrlen, bool expect_change)
{
	struct addr_args args;
	int err;

	if (addrlen)
		args.addrlen = *addrlen;

	if (addr)
		memcpy(&args.addr, addr, *addrlen);

	err = run_bpf_prog(name, &args, sizeof(args));

	if (!expect_change && addr)
		if (!ASSERT_EQ(cmp_addr((struct sockaddr_storage *)addr,
					*addrlen,
					(struct sockaddr_storage *)&args.addr,
					args.addrlen, 1),
			       0, "address_param_modified"))
			return -1;

	if (addrlen)
		*addrlen = args.addrlen;

	if (addr)
		memcpy(addr, &args.addr, *addrlen);

	return err;
}

static int send_msg_op(const char *name, struct sockaddr *addr,
		       socklen_t addrlen, const char *msg, int msglen)
{
	struct sendmsg_args args;
	int err;

	memset(&args, 0, sizeof(args));
	memcpy(&args.addr.addr, addr, addrlen);
	args.addr.addrlen = addrlen;
	memcpy(args.msg, msg, msglen);
	args.msglen = msglen;

	err = run_bpf_prog(name, &args, sizeof(args));

	if (!ASSERT_EQ(cmp_addr((struct sockaddr_storage *)addr,
				addrlen,
				(struct sockaddr_storage *)&args.addr.addr,
				args.addr.addrlen, 1),
		       0, "address_param_modified"))
		return -1;

	return err;
}

static int kernel_connect(struct sockaddr *addr, socklen_t addrlen)
{
	return sock_addr_op("kernel_connect", addr, &addrlen, false);
}

static int kernel_bind(int fd, struct sockaddr *addr, socklen_t addrlen)
{
	return sock_addr_op("kernel_bind", addr, &addrlen, false);
}

static int kernel_listen(void)
{
	return sock_addr_op("kernel_listen", NULL, NULL, false);
}

static int kernel_sendmsg(int fd, struct sockaddr *addr, socklen_t addrlen,
			  char *msg, int msglen)
{
	return send_msg_op("kernel_sendmsg", addr, addrlen, msg, msglen);
}

static int sock_sendmsg(int fd, struct sockaddr *addr, socklen_t addrlen,
			char *msg, int msglen)
{
	return send_msg_op("sock_sendmsg", addr, addrlen, msg, msglen);
}

static int kernel_getsockname(int fd, struct sockaddr *addr, socklen_t *addrlen)
{
	return sock_addr_op("kernel_getsockname", addr, addrlen, true);
}

static int kernel_getpeername(int fd, struct sockaddr *addr, socklen_t *addrlen)
{
	return sock_addr_op("kernel_getpeername", addr, addrlen, true);
}

int kernel_connect_to_addr(int type, const struct sockaddr_storage *addr, socklen_t addrlen,
			   const struct network_helper_opts *opts)
{
	int err;

	if (!ASSERT_OK(kernel_init_sock(addr->ss_family, type, 0),
		       "kernel_init_sock"))
		goto err;

	if (kernel_connect((struct sockaddr *)addr, addrlen) < 0)
		goto err;

	/* Test code expects a "file descriptor" on success. */
	err = 1;
	goto out;
err:
	err = -1;
	save_errno_do(ASSERT_OK(kernel_close_sock(0), "kernel_close_sock"));
out:
	return err;
}

int kernel_start_server(int family, int type, const char *addr_str, __u16 port,
			int timeout_ms)
{
	struct sockaddr_storage addr;
	socklen_t addrlen;
	int err;

	if (!ASSERT_OK(kernel_init_sock(family, type, 0), "kernel_init_sock"))
		goto err;

	if (make_sockaddr(family, addr_str, port, &addr, &addrlen))
		goto err;

	if (kernel_bind(0, (struct sockaddr *)&addr, addrlen) < 0)
		goto err;

	if (type == SOCK_STREAM) {
		if (!ASSERT_OK(kernel_listen(), "kernel_listen"))
			goto err;
	}

	/* Test code expects a "file descriptor" on success. */
	err = 1;
	goto out;
err:
	err = -1;
	save_errno_do(ASSERT_OK(kernel_close_sock(0), "kernel_close_sock"));
out:
	return err;
}

struct sock_ops {
	int (*connect_to_addr)(int type, const struct sockaddr_storage *addr,
			       socklen_t addrlen,
			       const struct network_helper_opts *opts);
	int (*start_server)(int family, int type, const char *addr_str,
			    __u16 port, int timeout_ms);
	int (*socket)(int famil, int type, int protocol);
	int (*bind)(int fd, struct sockaddr *addr, socklen_t addrlen);
	int (*getsockname)(int fd, struct sockaddr *addr, socklen_t *addrlen);
	int (*getpeername)(int fd, struct sockaddr *addr, socklen_t *addrlen);
	int (*sendmsg)(int fd, struct sockaddr *addr, socklen_t addrlen,
		       char *msg, int msglen);
	int (*close)(int fd);
};

static int user_sendmsg(int fd, struct sockaddr *addr, socklen_t addrlen,
			char *msg, int msglen)
{
	struct msghdr hdr;
	struct iovec iov;

	memset(&iov, 0, sizeof(iov));
	iov.iov_base = msg;
	iov.iov_len = msglen;

	memset(&hdr, 0, sizeof(hdr));
	hdr.msg_name = (void *)addr;
	hdr.msg_namelen = addrlen;
	hdr.msg_iov = &iov;
	hdr.msg_iovlen = 1;

	return sendmsg(fd, &hdr, 0);
}

static int user_bind(int fd, struct sockaddr *addr, socklen_t addrlen)
{
	return bind(fd, (const struct sockaddr *)addr, addrlen);
}

struct sock_ops user_ops = {
	.connect_to_addr = connect_to_addr,
	.start_server = start_server,
	.socket = socket,
	.bind = user_bind,
	.getsockname = getsockname,
	.getpeername = getpeername,
	.sendmsg = user_sendmsg,
	.close = close,
};

struct sock_ops kern_ops_sock_sendmsg = {
	.connect_to_addr = kernel_connect_to_addr,
	.start_server = kernel_start_server,
	.socket = kernel_init_sock,
	.bind = kernel_bind,
	.getsockname = kernel_getsockname,
	.getpeername = kernel_getpeername,
	.sendmsg = sock_sendmsg,
	.close = kernel_close_sock,
};

struct sock_ops kern_ops_kernel_sendmsg = {
	.connect_to_addr = kernel_connect_to_addr,
	.start_server = kernel_start_server,
	.socket = kernel_init_sock,
	.bind = kernel_bind,
	.getsockname = kernel_getsockname,
	.getpeername = kernel_getpeername,
	.sendmsg = kernel_sendmsg,
	.close = kernel_close_sock,
};

struct sock_addr_test {
	enum sock_addr_test_type type;
	const char *name;
	/* BPF prog properties */
	load_fn loadfn;
	destroy_fn destroyfn;
	enum bpf_attach_type attach_type;
	/* Socket operations */
	struct sock_ops *ops;
	/* Socket properties */
	int socket_family;
	int socket_type;
	/* IP:port pairs for BPF prog to override */
	const char *requested_addr;
	unsigned short requested_port;
	const char *expected_addr;
	unsigned short expected_port;
	const char *expected_src_addr;
	/* Expected test result */
	enum {
		LOAD_REJECT,
		ATTACH_REJECT,
		SYSCALL_EPERM,
		SYSCALL_ENOTSUPP,
		SUCCESS,
	} expected_result;
};

#define BPF_SKEL_FUNCS_RAW(skel_name, prog_name) \
static void *prog_name##_load_raw(int cgroup_fd, \
				  enum bpf_attach_type attach_type, \
				  bool expect_reject) \
{ \
	struct skel_name *skel = skel_name##__open(); \
	int prog_fd = -1; \
	if (!ASSERT_OK_PTR(skel, "skel_open")) \
		goto cleanup; \
	if (!ASSERT_OK(skel_name##__load(skel), "load")) \
		goto cleanup; \
	prog_fd = bpf_program__fd(skel->progs.prog_name); \
	if (!ASSERT_GT(prog_fd, 0, "prog_fd")) \
		goto cleanup; \
	if (bpf_prog_attach(prog_fd, cgroup_fd, attach_type, \
			      BPF_F_ALLOW_OVERRIDE), "bpf_prog_attach") { \
		ASSERT_TRUE(expect_reject, "unexpected rejection"); \
		goto cleanup; \
	} \
	if (!ASSERT_FALSE(expect_reject, "expected rejection")) \
		goto cleanup; \
cleanup: \
	if (prog_fd > 0) \
		bpf_prog_detach(cgroup_fd, attach_type); \
	skel_name##__destroy(skel); \
	return NULL; \
} \
static void prog_name##_destroy_raw(void *progfd) \
{ \
	/* No-op. *_load_raw does all cleanup. */ \
} \

#define BPF_SKEL_FUNCS(skel_name, prog_name) \
static void *prog_name##_load(int cgroup_fd, \
			      enum bpf_attach_type attach_type, \
			      bool expect_reject) \
{ \
	struct skel_name *skel = skel_name##__open(); \
	if (!ASSERT_OK_PTR(skel, "skel_open")) \
		goto cleanup; \
	if (!ASSERT_OK(bpf_program__set_expected_attach_type(skel->progs.prog_name, \
							     attach_type), \
		       "set_expected_attach_type")) \
		goto cleanup; \
	if (skel_name##__load(skel)) { \
		ASSERT_TRUE(expect_reject, "unexpected rejection"); \
		goto cleanup; \
	} \
	if (!ASSERT_FALSE(expect_reject, "expected rejection")) \
		goto cleanup; \
	skel->links.prog_name = bpf_program__attach_cgroup( \
		skel->progs.prog_name, cgroup_fd); \
	if (!ASSERT_OK_PTR(skel->links.prog_name, "prog_attach")) \
		goto cleanup; \
	return skel; \
cleanup: \
	skel_name##__destroy(skel); \
	return NULL; \
} \
static void prog_name##_destroy(void *skel) \
{ \
	skel_name##__destroy(skel); \
}

BPF_SKEL_FUNCS(bind4_prog, bind_v4_prog);
BPF_SKEL_FUNCS_RAW(bind4_prog, bind_v4_prog);
BPF_SKEL_FUNCS(bind4_prog, bind_v4_deny_prog);
BPF_SKEL_FUNCS(bind6_prog, bind_v6_prog);
BPF_SKEL_FUNCS_RAW(bind6_prog, bind_v6_prog);
BPF_SKEL_FUNCS(bind6_prog, bind_v6_deny_prog);
BPF_SKEL_FUNCS(connect4_prog, connect_v4_prog);
BPF_SKEL_FUNCS_RAW(connect4_prog, connect_v4_prog);
BPF_SKEL_FUNCS(connect4_prog, connect_v4_deny_prog);
BPF_SKEL_FUNCS(connect6_prog, connect_v6_prog);
BPF_SKEL_FUNCS_RAW(connect6_prog, connect_v6_prog);
BPF_SKEL_FUNCS(connect6_prog, connect_v6_deny_prog);
BPF_SKEL_FUNCS(connect_unix_prog, connect_unix_prog);
BPF_SKEL_FUNCS_RAW(connect_unix_prog, connect_unix_prog);
BPF_SKEL_FUNCS(connect_unix_prog, connect_unix_deny_prog);
BPF_SKEL_FUNCS(sendmsg4_prog, sendmsg_v4_prog);
BPF_SKEL_FUNCS_RAW(sendmsg4_prog, sendmsg_v4_prog);
BPF_SKEL_FUNCS(sendmsg4_prog, sendmsg_v4_deny_prog);
BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_prog);
BPF_SKEL_FUNCS_RAW(sendmsg6_prog, sendmsg_v6_prog);
BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_deny_prog);
BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_preserve_dst_prog);
BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_v4mapped_prog);
BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_wildcard_prog);
BPF_SKEL_FUNCS(sendmsg_unix_prog, sendmsg_unix_prog);
BPF_SKEL_FUNCS_RAW(sendmsg_unix_prog, sendmsg_unix_prog);
BPF_SKEL_FUNCS(sendmsg_unix_prog, sendmsg_unix_deny_prog);
BPF_SKEL_FUNCS(recvmsg4_prog, recvmsg4_prog);
BPF_SKEL_FUNCS_RAW(recvmsg4_prog, recvmsg4_prog);
BPF_SKEL_FUNCS(recvmsg6_prog, recvmsg6_prog);
BPF_SKEL_FUNCS_RAW(recvmsg6_prog, recvmsg6_prog);
BPF_SKEL_FUNCS(recvmsg_unix_prog, recvmsg_unix_prog);
BPF_SKEL_FUNCS_RAW(recvmsg_unix_prog, recvmsg_unix_prog);
BPF_SKEL_FUNCS(getsockname_unix_prog, getsockname_unix_prog);
BPF_SKEL_FUNCS_RAW(getsockname_unix_prog, getsockname_unix_prog);
BPF_SKEL_FUNCS(getsockname4_prog, getsockname_v4_prog);
BPF_SKEL_FUNCS_RAW(getsockname4_prog, getsockname_v4_prog);
BPF_SKEL_FUNCS(getsockname6_prog, getsockname_v6_prog);
BPF_SKEL_FUNCS_RAW(getsockname6_prog, getsockname_v6_prog);
BPF_SKEL_FUNCS(getpeername_unix_prog, getpeername_unix_prog);
BPF_SKEL_FUNCS_RAW(getpeername_unix_prog, getpeername_unix_prog);
BPF_SKEL_FUNCS(getpeername4_prog, getpeername_v4_prog);
BPF_SKEL_FUNCS_RAW(getpeername4_prog, getpeername_v4_prog);
BPF_SKEL_FUNCS(getpeername6_prog, getpeername_v6_prog);
BPF_SKEL_FUNCS_RAW(getpeername6_prog, getpeername_v6_prog);

static struct sock_addr_test tests[] = {
	/* bind - system calls */
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: bind (stream)",
		bind_v4_prog_load,
		bind_v4_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: bind deny (stream)",
		bind_v4_deny_prog_load,
		bind_v4_deny_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: bind (dgram)",
		bind_v4_prog_load,
		bind_v4_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: bind deny (dgram)",
		bind_v4_deny_prog_load,
		bind_v4_deny_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: load prog with wrong expected attach type",
		bind_v4_prog_load,
		bind_v4_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		LOAD_REJECT,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: attach prog with wrong attach type",
		bind_v4_prog_load_raw,
		bind_v4_prog_destroy_raw,
		BPF_CGROUP_INET6_BIND,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: bind (stream)",
		bind_v6_prog_load,
		bind_v6_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: bind deny (stream)",
		bind_v6_deny_prog_load,
		bind_v6_deny_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: bind (dgram)",
		bind_v6_prog_load,
		bind_v6_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: bind deny (dgram)",
		bind_v6_deny_prog_load,
		bind_v6_deny_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: load prog with wrong expected attach type",
		bind_v6_prog_load,
		bind_v6_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		LOAD_REJECT,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: attach prog with wrong attach type",
		bind_v6_prog_load_raw,
		bind_v6_prog_destroy_raw,
		BPF_CGROUP_INET4_BIND,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		ATTACH_REJECT,
	},

	/* bind - kernel calls */
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: kernel_bind (stream)",
		bind_v4_prog_load,
		bind_v4_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_STREAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: kernel_bind deny (stream)",
		bind_v4_deny_prog_load,
		bind_v4_deny_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_STREAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: kernel_bind (dgram)",
		bind_v4_prog_load,
		bind_v4_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind4: kernel_bind deny (dgram)",
		bind_v4_deny_prog_load,
		bind_v4_deny_prog_destroy,
		BPF_CGROUP_INET4_BIND,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: kernel_bind (stream)",
		bind_v6_prog_load,
		bind_v6_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_STREAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: kernel_bind deny (stream)",
		bind_v6_deny_prog_load,
		bind_v6_deny_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_STREAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: kernel_bind (dgram)",
		bind_v6_prog_load,
		bind_v6_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_BIND,
		"bind6: kernel_bind deny (dgram)",
		bind_v6_deny_prog_load,
		bind_v6_deny_prog_destroy,
		BPF_CGROUP_INET6_BIND,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		NULL,
		SYSCALL_EPERM,
	},

	/* connect - system calls */
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: connect (stream)",
		connect_v4_prog_load,
		connect_v4_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: connect deny (stream)",
		connect_v4_deny_prog_load,
		connect_v4_deny_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: connect (dgram)",
		connect_v4_prog_load,
		connect_v4_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: connect deny (dgram)",
		connect_v4_deny_prog_load,
		connect_v4_deny_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: load prog with wrong expected attach type",
		connect_v4_prog_load,
		connect_v4_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		LOAD_REJECT,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: attach prog with wrong attach type",
		connect_v4_prog_load_raw,
		connect_v4_prog_destroy_raw,
		BPF_CGROUP_INET6_CONNECT,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: connect (stream)",
		connect_v6_prog_load,
		connect_v6_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: connect deny (stream)",
		connect_v6_deny_prog_load,
		connect_v6_deny_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: connect (dgram)",
		connect_v6_prog_load,
		connect_v6_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: connect deny (dgram)",
		connect_v6_deny_prog_load,
		connect_v6_deny_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: load prog with wrong expected attach type",
		connect_v6_prog_load,
		connect_v6_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		LOAD_REJECT,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: attach prog with wrong attach type",
		connect_v6_prog_load_raw,
		connect_v6_prog_destroy_raw,
		BPF_CGROUP_INET4_CONNECT,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect_unix: connect (stream)",
		connect_unix_prog_load,
		connect_unix_prog_destroy,
		BPF_CGROUP_UNIX_CONNECT,
		&user_ops,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect_unix: connect deny (stream)",
		connect_unix_deny_prog_load,
		connect_unix_deny_prog_destroy,
		BPF_CGROUP_UNIX_CONNECT,
		&user_ops,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect_unix: attach prog with wrong attach type",
		connect_unix_prog_load_raw,
		connect_unix_prog_destroy_raw,
		BPF_CGROUP_INET4_CONNECT,
		&user_ops,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		ATTACH_REJECT,
	},

	/* connect - kernel calls */
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: kernel_connect (stream)",
		connect_v4_prog_load,
		connect_v4_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_STREAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: kernel_connect deny (stream)",
		connect_v4_deny_prog_load,
		connect_v4_deny_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_STREAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: kernel_connect (dgram)",
		connect_v4_prog_load,
		connect_v4_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect4: kernel_connect deny (dgram)",
		connect_v4_deny_prog_load,
		connect_v4_deny_prog_destroy,
		BPF_CGROUP_INET4_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: kernel_connect (stream)",
		connect_v6_prog_load,
		connect_v6_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_STREAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: kernel_connect deny (stream)",
		connect_v6_deny_prog_load,
		connect_v6_deny_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_STREAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: kernel_connect (dgram)",
		connect_v6_prog_load,
		connect_v6_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect6: kernel_connect deny (dgram)",
		connect_v6_deny_prog_load,
		connect_v6_deny_prog_destroy,
		BPF_CGROUP_INET6_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect_unix: kernel_connect (dgram)",
		connect_unix_prog_load,
		connect_unix_prog_destroy,
		BPF_CGROUP_UNIX_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_CONNECT,
		"connect_unix: kernel_connect deny (dgram)",
		connect_unix_deny_prog_load,
		connect_unix_deny_prog_destroy,
		BPF_CGROUP_UNIX_CONNECT,
		&kern_ops_sock_sendmsg,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SYSCALL_EPERM,
	},

	/* sendmsg - system calls */
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg4: sendmsg (dgram)",
		sendmsg_v4_prog_load,
		sendmsg_v4_prog_destroy,
		BPF_CGROUP_UDP4_SENDMSG,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg4: sendmsg deny (dgram)",
		sendmsg_v4_deny_prog_load,
		sendmsg_v4_deny_prog_destroy,
		BPF_CGROUP_UDP4_SENDMSG,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg4: load prog with wrong expected attach type",
		sendmsg_v4_prog_load,
		sendmsg_v4_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		LOAD_REJECT,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg4: attach prog with wrong attach type",
		sendmsg_v4_prog_load_raw,
		sendmsg_v4_prog_destroy_raw,
		BPF_CGROUP_UDP6_SENDMSG,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: sendmsg (dgram)",
		sendmsg_v6_prog_load,
		sendmsg_v6_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: sendmsg [::] (BSD'ism) (dgram)",
		sendmsg_v6_preserve_dst_prog_load,
		sendmsg_v6_preserve_dst_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		WILDCARD6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_PORT,
		SRC6_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: sendmsg deny (dgram)",
		sendmsg_v6_deny_prog_load,
		sendmsg_v6_deny_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: sendmsg IPv4-mapped IPv6 (dgram)",
		sendmsg_v6_v4mapped_prog_load,
		sendmsg_v6_v4mapped_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SYSCALL_ENOTSUPP,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: sendmsg dst IP = [::] (BSD'ism) (dgram)",
		sendmsg_v6_wildcard_prog_load,
		sendmsg_v6_wildcard_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: load prog with wrong expected attach type",
		sendmsg_v6_prog_load,
		sendmsg_v6_prog_destroy,
		BPF_CGROUP_UDP4_SENDMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		LOAD_REJECT,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: attach prog with wrong attach type",
		sendmsg_v6_prog_load_raw,
		sendmsg_v6_prog_destroy_raw,
		BPF_CGROUP_UDP4_SENDMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		NULL,
		0,
		NULL,
		0,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg_unix: sendmsg (dgram)",
		sendmsg_unix_prog_load,
		sendmsg_unix_prog_destroy,
		BPF_CGROUP_UNIX_SENDMSG,
		&user_ops,
		AF_UNIX,
		SOCK_DGRAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg_unix: sendmsg deny (dgram)",
		sendmsg_unix_deny_prog_load,
		sendmsg_unix_deny_prog_destroy,
		BPF_CGROUP_UNIX_SENDMSG,
		&user_ops,
		AF_UNIX,
		SOCK_DGRAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg_unix: attach prog with wrong attach type",
		sendmsg_unix_prog_load_raw,
		sendmsg_unix_prog_destroy_raw,
		BPF_CGROUP_UDP4_SENDMSG,
		&user_ops,
		AF_UNIX,
		SOCK_DGRAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		ATTACH_REJECT,
	},

	/* sendmsg - kernel calls (sock_sendmsg) */
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg4: sock_sendmsg (dgram)",
		sendmsg_v4_prog_load,
		sendmsg_v4_prog_destroy,
		BPF_CGROUP_UDP4_SENDMSG,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg4: sock_sendmsg deny (dgram)",
		sendmsg_v4_deny_prog_load,
		sendmsg_v4_deny_prog_destroy,
		BPF_CGROUP_UDP4_SENDMSG,
		&kern_ops_sock_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: sock_sendmsg (dgram)",
		sendmsg_v6_prog_load,
		sendmsg_v6_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: sock_sendmsg [::] (BSD'ism) (dgram)",
		sendmsg_v6_preserve_dst_prog_load,
		sendmsg_v6_preserve_dst_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		WILDCARD6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_PORT,
		SRC6_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: sock_sendmsg deny (dgram)",
		sendmsg_v6_deny_prog_load,
		sendmsg_v6_deny_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&kern_ops_sock_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg_unix: sock_sendmsg (dgram)",
		sendmsg_unix_prog_load,
		sendmsg_unix_prog_destroy,
		BPF_CGROUP_UNIX_SENDMSG,
		&kern_ops_sock_sendmsg,
		AF_UNIX,
		SOCK_DGRAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg_unix: sock_sendmsg deny (dgram)",
		sendmsg_unix_deny_prog_load,
		sendmsg_unix_deny_prog_destroy,
		BPF_CGROUP_UNIX_SENDMSG,
		&kern_ops_sock_sendmsg,
		AF_UNIX,
		SOCK_DGRAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SYSCALL_EPERM,
	},

	/* sendmsg - kernel calls (kernel_sendmsg) */
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg4: kernel_sendmsg (dgram)",
		sendmsg_v4_prog_load,
		sendmsg_v4_prog_destroy,
		BPF_CGROUP_UDP4_SENDMSG,
		&kern_ops_kernel_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg4: kernel_sendmsg deny (dgram)",
		sendmsg_v4_deny_prog_load,
		sendmsg_v4_deny_prog_destroy,
		BPF_CGROUP_UDP4_SENDMSG,
		&kern_ops_kernel_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_IP,
		SERV4_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SRC4_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: kernel_sendmsg (dgram)",
		sendmsg_v6_prog_load,
		sendmsg_v6_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&kern_ops_kernel_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: kernel_sendmsg [::] (BSD'ism) (dgram)",
		sendmsg_v6_preserve_dst_prog_load,
		sendmsg_v6_preserve_dst_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&kern_ops_kernel_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		WILDCARD6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_PORT,
		SRC6_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg6: kernel_sendmsg deny (dgram)",
		sendmsg_v6_deny_prog_load,
		sendmsg_v6_deny_prog_destroy,
		BPF_CGROUP_UDP6_SENDMSG,
		&kern_ops_kernel_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_IP,
		SERV6_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SRC6_REWRITE_IP,
		SYSCALL_EPERM,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg_unix: sock_sendmsg (dgram)",
		sendmsg_unix_prog_load,
		sendmsg_unix_prog_destroy,
		BPF_CGROUP_UNIX_SENDMSG,
		&kern_ops_kernel_sendmsg,
		AF_UNIX,
		SOCK_DGRAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_SENDMSG,
		"sendmsg_unix: kernel_sendmsg deny (dgram)",
		sendmsg_unix_deny_prog_load,
		sendmsg_unix_deny_prog_destroy,
		BPF_CGROUP_UNIX_SENDMSG,
		&kern_ops_kernel_sendmsg,
		AF_UNIX,
		SOCK_DGRAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SYSCALL_EPERM,
	},

	/* recvmsg - system calls */
	{
		SOCK_ADDR_TEST_RECVMSG,
		"recvmsg4: recvfrom (dgram)",
		recvmsg4_prog_load,
		recvmsg4_prog_destroy,
		BPF_CGROUP_UDP4_RECVMSG,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_RECVMSG,
		"recvmsg4: attach prog with wrong attach type",
		recvmsg4_prog_load_raw,
		recvmsg4_prog_destroy_raw,
		BPF_CGROUP_UDP6_RECVMSG,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_RECVMSG,
		"recvmsg6: recvfrom (dgram)",
		recvmsg6_prog_load,
		recvmsg6_prog_destroy,
		BPF_CGROUP_UDP6_RECVMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_RECVMSG,
		"recvmsg6: attach prog with wrong attach type",
		recvmsg6_prog_load_raw,
		recvmsg6_prog_destroy_raw,
		BPF_CGROUP_UDP4_RECVMSG,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_RECVMSG,
		"recvmsg_unix: recvfrom (dgram)",
		recvmsg_unix_prog_load,
		recvmsg_unix_prog_destroy,
		BPF_CGROUP_UNIX_RECVMSG,
		&user_ops,
		AF_UNIX,
		SOCK_DGRAM,
		SERVUN_REWRITE_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		SERVUN_ADDRESS,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_RECVMSG,
		"recvmsg_unix: recvfrom (stream)",
		recvmsg_unix_prog_load,
		recvmsg_unix_prog_destroy,
		BPF_CGROUP_UNIX_RECVMSG,
		&user_ops,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_REWRITE_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		SERVUN_ADDRESS,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_RECVMSG,
		"recvmsg_unix: attach prog with wrong attach type",
		recvmsg_unix_prog_load_raw,
		recvmsg_unix_prog_destroy_raw,
		BPF_CGROUP_UDP4_RECVMSG,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		SERVUN_REWRITE_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		SERVUN_ADDRESS,
		ATTACH_REJECT,
	},

	/* getsockname - system calls */
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname4: getsockname (stream)",
		getsockname_v4_prog_load,
		getsockname_v4_prog_destroy,
		BPF_CGROUP_INET4_GETSOCKNAME,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname4: getsockname (dgram)",
		getsockname_v4_prog_load,
		getsockname_v4_prog_destroy,
		BPF_CGROUP_INET4_GETSOCKNAME,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname4: attach prog with wrong attach type",
		getsockname_v4_prog_load_raw,
		getsockname_v4_prog_destroy_raw,
		BPF_CGROUP_INET6_GETSOCKNAME,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname6: getsockname (stream)",
		getsockname_v6_prog_load,
		getsockname_v6_prog_destroy,
		BPF_CGROUP_INET6_GETSOCKNAME,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname6: getsockname (dgram)",
		getsockname_v6_prog_load,
		getsockname_v6_prog_destroy,
		BPF_CGROUP_INET6_GETSOCKNAME,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname6: attach prog with wrong attach type",
		getsockname_v6_prog_load_raw,
		getsockname_v6_prog_destroy_raw,
		BPF_CGROUP_INET4_GETSOCKNAME,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname_unix: getsockname",
		getsockname_unix_prog_load,
		getsockname_unix_prog_destroy,
		BPF_CGROUP_UNIX_GETSOCKNAME,
		&user_ops,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname_unix: attach prog with wrong attach type",
		getsockname_unix_prog_load_raw,
		getsockname_unix_prog_destroy_raw,
		BPF_CGROUP_INET4_GETSOCKNAME,
		&user_ops,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		ATTACH_REJECT,
	},

	/* getsockname - kernel calls */
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname4: kernel_getsockname (stream)",
		getsockname_v4_prog_load,
		getsockname_v4_prog_destroy,
		BPF_CGROUP_INET4_GETSOCKNAME,
		&kern_ops_kernel_sendmsg,
		AF_INET,
		SOCK_STREAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname4: kernel_getsockname (dgram)",
		getsockname_v4_prog_load,
		getsockname_v4_prog_destroy,
		BPF_CGROUP_INET4_GETSOCKNAME,
		&kern_ops_kernel_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname6: kernel_getsockname (stream)",
		getsockname_v6_prog_load,
		getsockname_v6_prog_destroy,
		BPF_CGROUP_INET6_GETSOCKNAME,
		&kern_ops_kernel_sendmsg,
		AF_INET6,
		SOCK_STREAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname6: kernel_getsockname (dgram)",
		getsockname_v6_prog_load,
		getsockname_v6_prog_destroy,
		BPF_CGROUP_INET6_GETSOCKNAME,
		&kern_ops_kernel_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETSOCKNAME,
		"getsockname_unix: kernel_getsockname",
		getsockname_unix_prog_load,
		getsockname_unix_prog_destroy,
		BPF_CGROUP_UNIX_GETSOCKNAME,
		&kern_ops_kernel_sendmsg,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},

	/* getpeername - system calls */
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername4: getpeername (stream)",
		getpeername_v4_prog_load,
		getpeername_v4_prog_destroy,
		BPF_CGROUP_INET4_GETPEERNAME,
		&user_ops,
		AF_INET,
		SOCK_STREAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername4: getpeername (dgram)",
		getpeername_v4_prog_load,
		getpeername_v4_prog_destroy,
		BPF_CGROUP_INET4_GETPEERNAME,
		&user_ops,
		AF_INET,
		SOCK_DGRAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername4: attach prog with wrong attach type",
		getpeername_v4_prog_load_raw,
		getpeername_v4_prog_destroy_raw,
		BPF_CGROUP_INET6_GETSOCKNAME,
		&user_ops,
		AF_UNIX,
		SOCK_DGRAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername6: getpeername (stream)",
		getpeername_v6_prog_load,
		getpeername_v6_prog_destroy,
		BPF_CGROUP_INET6_GETPEERNAME,
		&user_ops,
		AF_INET6,
		SOCK_STREAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername6: getpeername (dgram)",
		getpeername_v6_prog_load,
		getpeername_v6_prog_destroy,
		BPF_CGROUP_INET6_GETPEERNAME,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername6: attach prog with wrong attach type",
		getpeername_v6_prog_load_raw,
		getpeername_v6_prog_destroy_raw,
		BPF_CGROUP_INET4_GETSOCKNAME,
		&user_ops,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		ATTACH_REJECT,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername_unix: getpeername",
		getpeername_unix_prog_load,
		getpeername_unix_prog_destroy,
		BPF_CGROUP_UNIX_GETPEERNAME,
		&user_ops,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername_unix: attach prog with wrong attach type",
		getpeername_unix_prog_load_raw,
		getpeername_unix_prog_destroy_raw,
		BPF_CGROUP_INET4_GETSOCKNAME,
		&user_ops,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		ATTACH_REJECT,
	},

	/* getpeername - kernel calls */
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername4: kernel_getpeername (stream)",
		getpeername_v4_prog_load,
		getpeername_v4_prog_destroy,
		BPF_CGROUP_INET4_GETPEERNAME,
		&kern_ops_kernel_sendmsg,
		AF_INET,
		SOCK_STREAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername4: kernel_getpeername (dgram)",
		getpeername_v4_prog_load,
		getpeername_v4_prog_destroy,
		BPF_CGROUP_INET4_GETPEERNAME,
		&kern_ops_kernel_sendmsg,
		AF_INET,
		SOCK_DGRAM,
		SERV4_REWRITE_IP,
		SERV4_REWRITE_PORT,
		SERV4_IP,
		SERV4_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername6: kernel_getpeername (stream)",
		getpeername_v6_prog_load,
		getpeername_v6_prog_destroy,
		BPF_CGROUP_INET6_GETPEERNAME,
		&kern_ops_kernel_sendmsg,
		AF_INET6,
		SOCK_STREAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername6: kernel_getpeername (dgram)",
		getpeername_v6_prog_load,
		getpeername_v6_prog_destroy,
		BPF_CGROUP_INET6_GETPEERNAME,
		&kern_ops_kernel_sendmsg,
		AF_INET6,
		SOCK_DGRAM,
		SERV6_REWRITE_IP,
		SERV6_REWRITE_PORT,
		SERV6_IP,
		SERV6_PORT,
		NULL,
		SUCCESS,
	},
	{
		SOCK_ADDR_TEST_GETPEERNAME,
		"getpeername_unix: kernel_getpeername",
		getpeername_unix_prog_load,
		getpeername_unix_prog_destroy,
		BPF_CGROUP_UNIX_GETPEERNAME,
		&kern_ops_kernel_sendmsg,
		AF_UNIX,
		SOCK_STREAM,
		SERVUN_ADDRESS,
		0,
		SERVUN_REWRITE_ADDRESS,
		0,
		NULL,
		SUCCESS,
	},
};

typedef int (*info_fn)(int, struct sockaddr *, socklen_t *);

static int cmp_addr(const struct sockaddr_storage *addr1, socklen_t addr1_len,
		    const struct sockaddr_storage *addr2, socklen_t addr2_len,
		    bool cmp_port)
{
	const struct sockaddr_in *four1, *four2;
	const struct sockaddr_in6 *six1, *six2;
	const struct sockaddr_un *un1, *un2;

	if (addr1->ss_family != addr2->ss_family)
		return -1;

	if (addr1_len != addr2_len)
		return -1;

	if (addr1->ss_family == AF_INET) {
		four1 = (const struct sockaddr_in *)addr1;
		four2 = (const struct sockaddr_in *)addr2;
		return !((four1->sin_port == four2->sin_port || !cmp_port) &&
			 four1->sin_addr.s_addr == four2->sin_addr.s_addr);
	} else if (addr1->ss_family == AF_INET6) {
		six1 = (const struct sockaddr_in6 *)addr1;
		six2 = (const struct sockaddr_in6 *)addr2;
		return !((six1->sin6_port == six2->sin6_port || !cmp_port) &&
			 !memcmp(&six1->sin6_addr, &six2->sin6_addr,
				 sizeof(struct in6_addr)));
	} else if (addr1->ss_family == AF_UNIX) {
		un1 = (const struct sockaddr_un *)addr1;
		un2 = (const struct sockaddr_un *)addr2;
		return memcmp(un1, un2, addr1_len);
	}

	return -1;
}

static int cmp_sock_addr(info_fn fn, int sock1,
			 const struct sockaddr_storage *addr2,
			 socklen_t addr2_len, bool cmp_port)
{
	struct sockaddr_storage addr1;
	socklen_t len1 = sizeof(addr1);

	memset(&addr1, 0, len1);
	if (fn(sock1, (struct sockaddr *)&addr1, (socklen_t *)&len1) != 0)
		return -1;

	return cmp_addr(&addr1, len1, addr2, addr2_len, cmp_port);
}

static int load_sock_addr_kern(void)
{
	int err;

	skel = sock_addr_kern__open_and_load();
	if (!ASSERT_OK_PTR(skel, "skel"))
		goto err;

	err = 0;
	goto out;
err:
	err = -1;
out:
	return err;
}

static void unload_sock_addr_kern(void)
{
	sock_addr_kern__destroy(skel);
}

static int test_bind(struct sock_addr_test *test)
{
	struct sockaddr_storage expected_addr;
	socklen_t expected_addr_len = sizeof(struct sockaddr_storage);
	int serv = -1, client = -1, err;

	serv = test->ops->start_server(test->socket_family, test->socket_type,
				       test->requested_addr,
				       test->requested_port, 0);
	if (serv < 0) {
		err = errno;
		goto err;
	}

	err = make_sockaddr(test->socket_family,
			    test->expected_addr, test->expected_port,
			    &expected_addr, &expected_addr_len);
	if (!ASSERT_EQ(err, 0, "make_sockaddr"))
		goto cleanup;

	err = cmp_sock_addr(test->ops->getsockname, serv, &expected_addr,
			    expected_addr_len, true);
	if (!ASSERT_EQ(err, 0, "cmp_local_addr"))
		goto cleanup;

	/* Try to connect to server just in case */
	client = connect_to_addr(test->socket_type, &expected_addr, expected_addr_len, NULL);
	if (!ASSERT_GE(client, 0, "connect_to_addr"))
		goto cleanup;

cleanup:
	err = 0;
err:
	if (client != -1)
		close(client);
	if (serv != -1)
		test->ops->close(serv);

	return err;
}

static int test_connect(struct sock_addr_test *test)
{
	struct sockaddr_storage addr, expected_addr, expected_src_addr;
	socklen_t addr_len = sizeof(struct sockaddr_storage),
		  expected_addr_len = sizeof(struct sockaddr_storage),
		  expected_src_addr_len = sizeof(struct sockaddr_storage);
	int serv = -1, client = -1, err;

	serv = start_server(test->socket_family, test->socket_type,
			    test->expected_addr, test->expected_port, 0);
	if (!ASSERT_GE(serv, 0, "start_server"))
		goto cleanup;

	err = make_sockaddr(test->socket_family, test->requested_addr, test->requested_port,
			    &addr, &addr_len);
	if (!ASSERT_EQ(err, 0, "make_sockaddr"))
		goto cleanup;

	client = test->ops->connect_to_addr(test->socket_type, &addr, addr_len,
					    NULL);
	if (client < 0) {
		err = errno;
		goto err;
	}

	err = make_sockaddr(test->socket_family, test->expected_addr, test->expected_port,
			    &expected_addr, &expected_addr_len);
	if (!ASSERT_EQ(err, 0, "make_sockaddr"))
		goto cleanup;

	if (test->expected_src_addr) {
		err = make_sockaddr(test->socket_family, test->expected_src_addr, 0,
				    &expected_src_addr, &expected_src_addr_len);
		if (!ASSERT_EQ(err, 0, "make_sockaddr"))
			goto cleanup;
	}

	err = cmp_sock_addr(test->ops->getpeername, client, &expected_addr,
			    expected_addr_len, true);
	if (!ASSERT_EQ(err, 0, "cmp_peer_addr"))
		goto cleanup;

	if (test->expected_src_addr) {
		err = cmp_sock_addr(test->ops->getsockname, client,
				    &expected_src_addr, expected_src_addr_len,
				    false);
		if (!ASSERT_EQ(err, 0, "cmp_local_addr"))
			goto cleanup;
	}
cleanup:
	err = 0;
err:
	if (client != -1)
		test->ops->close(client);
	if (serv != -1)
		close(serv);

	return err;
}

static int test_xmsg(struct sock_addr_test *test)
{
	struct sockaddr_storage addr, src_addr;
	socklen_t addr_len = sizeof(struct sockaddr_storage),
		  src_addr_len = sizeof(struct sockaddr_storage);
	char data = 'a';
	int serv = -1, client = -1, err;

	/* Unlike the other tests, here we test that we can rewrite the src addr
	 * with a recvmsg() hook.
	 */

	serv = start_server(test->socket_family, test->socket_type,
			    test->expected_addr, test->expected_port, 0);
	if (!ASSERT_GE(serv, 0, "start_server"))
		goto cleanup;

	client = test->ops->socket(test->socket_family, test->socket_type, 0);
	if (!ASSERT_GE(client, 0, "socket"))
		goto cleanup;

	/* AF_UNIX sockets have to be bound to something to trigger the recvmsg bpf program. */
	if (test->socket_family == AF_UNIX) {
		err = make_sockaddr(AF_UNIX, SRCUN_ADDRESS, 0, &src_addr, &src_addr_len);
		if (!ASSERT_EQ(err, 0, "make_sockaddr"))
			goto cleanup;

		err = test->ops->bind(client, (struct sockaddr *)&src_addr,
				      src_addr_len);
		if (!ASSERT_OK(err, "bind"))
			goto cleanup;
	}

	err = make_sockaddr(test->socket_family, test->requested_addr, test->requested_port,
			    &addr, &addr_len);
	if (!ASSERT_EQ(err, 0, "make_sockaddr"))
		goto cleanup;

	if (test->socket_type == SOCK_DGRAM) {
		err = test->ops->sendmsg(client, (struct sockaddr *)&addr,
					 addr_len, &data, sizeof(data));
		if (err < 0) {
			err = errno;
			goto err;
		}

		if (!ASSERT_EQ(err, sizeof(data), "sendmsg"))
			goto cleanup;
	} else {
		/* Testing with connection-oriented sockets is only valid for
		 * recvmsg() tests.
		 */
		if (!ASSERT_EQ(test->type, SOCK_ADDR_TEST_RECVMSG, "recvmsg"))
			goto cleanup;

		err = connect(client, (const struct sockaddr *)&addr, addr_len);
		if (!ASSERT_OK(err, "connect"))
			goto cleanup;

		err = send(client, &data, sizeof(data), 0);
		if (!ASSERT_EQ(err, sizeof(data), "send"))
			goto cleanup;

		err = listen(serv, 0);
		if (!ASSERT_OK(err, "listen"))
			goto cleanup;

		err = accept(serv, NULL, NULL);
		if (!ASSERT_GE(err, 0, "accept"))
			goto cleanup;

		close(serv);
		serv = err;
	}

	addr_len = src_addr_len = sizeof(struct sockaddr_storage);

	err = recvfrom(serv, &data, sizeof(data), 0, (struct sockaddr *) &src_addr, &src_addr_len);
	if (!ASSERT_EQ(err, sizeof(data), "recvfrom"))
		goto cleanup;

	ASSERT_EQ(data, 'a', "data mismatch");

	if (test->expected_src_addr) {
		err = make_sockaddr(test->socket_family, test->expected_src_addr, 0,
				    &addr, &addr_len);
		if (!ASSERT_EQ(err, 0, "make_sockaddr"))
			goto cleanup;

		err = cmp_addr(&src_addr, src_addr_len, &addr, addr_len, false);
		if (!ASSERT_EQ(err, 0, "cmp_addr"))
			goto cleanup;
	}

cleanup:
	err = 0;
err:
	if (client != -1)
		test->ops->close(client);
	if (serv != -1)
		close(serv);

	return err;
}

static int test_getsockname(struct sock_addr_test *test)
{
	struct sockaddr_storage expected_addr;
	socklen_t expected_addr_len = sizeof(struct sockaddr_storage);
	int serv = -1, err;

	serv = test->ops->start_server(test->socket_family, test->socket_type,
			    test->requested_addr, test->requested_port, 0);
	if (!ASSERT_GE(serv, 0, "start_server"))
		goto cleanup;

	err = make_sockaddr(test->socket_family,
			    test->expected_addr, test->expected_port,
			    &expected_addr, &expected_addr_len);
	if (!ASSERT_EQ(err, 0, "make_sockaddr"))
		goto cleanup;

	err = cmp_sock_addr(test->ops->getsockname, serv, &expected_addr, expected_addr_len, true);
	if (!ASSERT_EQ(err, 0, "cmp_local_addr"))
		goto cleanup;

cleanup:
	if (serv != -1)
		test->ops->close(serv);

	return 0;
}

static int test_getpeername(struct sock_addr_test *test)
{
	struct sockaddr_storage addr, expected_addr;
	socklen_t addr_len = sizeof(struct sockaddr_storage),
		  expected_addr_len = sizeof(struct sockaddr_storage);
	int serv = -1, client = -1, err;

	serv = start_server(test->socket_family, test->socket_type,
			    test->requested_addr, test->requested_port, 0);
	if (!ASSERT_GE(serv, 0, "start_server"))
		goto cleanup;

	err = make_sockaddr(test->socket_family, test->requested_addr, test->requested_port,
			    &addr, &addr_len);
	if (!ASSERT_EQ(err, 0, "make_sockaddr"))
		goto cleanup;

	client = test->ops->connect_to_addr(test->socket_type, &addr, addr_len,
					    NULL);
	if (!ASSERT_GE(client, 0, "connect_to_addr"))
		goto cleanup;

	err = make_sockaddr(test->socket_family, test->expected_addr, test->expected_port,
			    &expected_addr, &expected_addr_len);
	if (!ASSERT_EQ(err, 0, "make_sockaddr"))
		goto cleanup;

	err = cmp_sock_addr(test->ops->getpeername, client, &expected_addr,
			    expected_addr_len, true);
	if (!ASSERT_EQ(err, 0, "cmp_peer_addr"))
		goto cleanup;

cleanup:
	if (client != -1)
		test->ops->close(client);
	if (serv != -1)
		close(serv);

	return 0;
}

static int setup_test_env(struct nstoken **tok)
{
	int err;

	SYS_NOFAIL("ip netns delete %s", TEST_NS);
	SYS(fail, "ip netns add %s", TEST_NS);
	*tok = open_netns(TEST_NS);
	if (!ASSERT_OK_PTR(*tok, "netns token"))
		goto fail;

	SYS(fail, "ip link add dev %s1 type veth peer name %s2", TEST_IF_PREFIX,
	    TEST_IF_PREFIX);
	SYS(fail, "ip link set lo up");
	SYS(fail, "ip link set %s1 up", TEST_IF_PREFIX);
	SYS(fail, "ip link set %s2 up", TEST_IF_PREFIX);
	SYS(fail, "ip -4 addr add %s/8 dev %s1", TEST_IPV4, TEST_IF_PREFIX);
	SYS(fail, "ip -6 addr add %s/128 nodad dev %s1", TEST_IPV6, TEST_IF_PREFIX);

	err = 0;
	goto out;
fail:
	err = -1;
	close_netns(*tok);
	*tok = NULL;
	SYS_NOFAIL("ip netns delete %s", TEST_NS);
out:
	return err;
}

static void cleanup_test_env(struct nstoken *tok)
{
	close_netns(tok);
	SYS_NOFAIL("ip netns delete %s", TEST_NS);
}

void test_sock_addr(void)
{
	struct nstoken *tok = NULL;
	int cgroup_fd = -1;
	void *skel;

	cgroup_fd = test__join_cgroup("/sock_addr");
	if (!ASSERT_GE(cgroup_fd, 0, "join_cgroup"))
		goto cleanup;

	if (!ASSERT_OK(setup_test_env(&tok), "setup_test_env"))
		goto cleanup;

	if (!ASSERT_OK(load_sock_addr_kern(), "load_sock_addr_kern"))
		goto cleanup;

	for (size_t i = 0; i < ARRAY_SIZE(tests); ++i) {
		struct sock_addr_test *test = &tests[i];
		int err;

		if (!test__start_subtest(test->name))
			continue;

		skel = test->loadfn(cgroup_fd, test->attach_type,
				    test->expected_result == LOAD_REJECT ||
					test->expected_result == ATTACH_REJECT);
		if (!skel)
			continue;

		switch (test->type) {
		/* Not exercised yet but we leave this code here for when the
		 * INET and INET6 sockaddr tests are migrated to this file in
		 * the future.
		 */
		case SOCK_ADDR_TEST_BIND:
			err = test_bind(test);
			break;
		case SOCK_ADDR_TEST_CONNECT:
			err = test_connect(test);
			break;
		case SOCK_ADDR_TEST_SENDMSG:
		case SOCK_ADDR_TEST_RECVMSG:
			err = test_xmsg(test);
			break;
		case SOCK_ADDR_TEST_GETSOCKNAME:
			err = test_getsockname(test);
			break;
		case SOCK_ADDR_TEST_GETPEERNAME:
			err = test_getpeername(test);
			break;
		default:
			ASSERT_TRUE(false, "Unknown sock addr test type");
			err = -EINVAL;
			break;
		}

		if (test->expected_result == SYSCALL_EPERM)
			ASSERT_EQ(err, EPERM, "socket operation returns EPERM");
		else if (test->expected_result == SYSCALL_ENOTSUPP)
			ASSERT_EQ(err, ENOTSUPP, "socket operation returns ENOTSUPP");
		else if (test->expected_result == SUCCESS)
			ASSERT_OK(err, "socket operation succeeds");

		test->destroyfn(skel);
	}

cleanup:
	unload_sock_addr_kern();
	cleanup_test_env(tok);
	if (cgroup_fd >= 0)
		close(cgroup_fd);
}