tools/testing/selftests/bpf/prog_tests/cg_storage_multi.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only

 /*
  * Copyright 2020 Google LLC.
  */

 #include <test_progs.h>
 #include <cgroup_helpers.h>
 #include <network_helpers.h>

 #include "progs/cg_storage_multi.h"

 #include "cg_storage_multi_egress_only.skel.h"
 #include "cg_storage_multi_isolated.skel.h"
 #include "cg_storage_multi_shared.skel.h"

 #define PARENT_CGROUP "/cgroup_storage"
 #define CHILD_CGROUP "/cgroup_storage/child"

 static int duration;

 static bool assert_storage(struct bpf_map *map, const void *key,
 			   struct cgroup_value *expected)
 {
 	struct cgroup_value value;
 	int map_fd;

 	map_fd = bpf_map__fd(map);

 	if (CHECK(bpf_map_lookup_elem(map_fd, key, &value) < 0,
 		  "map-lookup", "errno %d", errno))
 		return true;
 	if (CHECK(memcmp(&value, expected, sizeof(struct cgroup_value)),
 		  "assert-storage", "storages differ"))
 		return true;

 	return false;
 }

 static bool assert_storage_noexist(struct bpf_map *map, const void *key)
 {
 	struct cgroup_value value;
 	int map_fd;

 	map_fd = bpf_map__fd(map);

 	if (CHECK(bpf_map_lookup_elem(map_fd, key, &value) == 0,
 		  "map-lookup", "succeeded, expected ENOENT"))
 		return true;
 	if (CHECK(errno != ENOENT,
 		  "map-lookup", "errno %d, expected ENOENT", errno))
 		return true;

 	return false;
 }

 static bool connect_send(const char *cgroup_path)
 {
 	bool res = true;
 	int server_fd = -1, client_fd = -1;

 	if (join_cgroup(cgroup_path))
 		goto out_clean;

 	server_fd = start_server(AF_INET, SOCK_DGRAM, NULL, 0, 0);
 	if (server_fd < 0)
 		goto out_clean;

 	client_fd = connect_to_fd(server_fd, 0);
 	if (client_fd < 0)
 		goto out_clean;

 	if (send(client_fd, "message", strlen("message"), 0) < 0)
 		goto out_clean;

 	res = false;

 out_clean:
 	close(client_fd);
 	close(server_fd);
 	return res;
 }

 static void test_egress_only(int parent_cgroup_fd, int child_cgroup_fd)
 {
 	struct cg_storage_multi_egress_only *obj;
 	struct cgroup_value expected_cgroup_value;
 	struct bpf_cgroup_storage_key key;
 	struct bpf_link *parent_link = NULL, *child_link = NULL;
 	bool err;

 	key.attach_type = BPF_CGROUP_INET_EGRESS;

 	obj = cg_storage_multi_egress_only__open_and_load();
 	if (CHECK(!obj, "skel-load", "errno %d", errno))
 		return;

 	/* Attach to parent cgroup, trigger packet from child.
 	 * Assert that there is only one run and in that run the storage is
 	 * parent cgroup's storage.
 	 * Also assert that child cgroup's storage does not exist
 	 */
 	parent_link = bpf_program__attach_cgroup(obj->progs.egress,
 						 parent_cgroup_fd);
 	if (CHECK(IS_ERR(parent_link), "parent-cg-attach",
 		  "err %ld", PTR_ERR(parent_link)))
 		goto close_bpf_object;
 	err = connect_send(CHILD_CGROUP);
 	if (CHECK(err, "first-connect-send", "errno %d", errno))
 		goto close_bpf_object;
 	if (CHECK(obj->bss->invocations != 1,
 		  "first-invoke", "invocations=%d", obj->bss->invocations))
 		goto close_bpf_object;
 	key.cgroup_inode_id = get_cgroup_id(PARENT_CGROUP);
 	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 1 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key.cgroup_inode_id = get_cgroup_id(CHILD_CGROUP);
 	if (assert_storage_noexist(obj->maps.cgroup_storage, &key))
 		goto close_bpf_object;

 	/* Attach to parent and child cgroup, trigger packet from child.
 	 * Assert that there are two additional runs, one that run with parent
 	 * cgroup's storage and one with child cgroup's storage.
 	 */
 	child_link = bpf_program__attach_cgroup(obj->progs.egress,
 						child_cgroup_fd);
 	if (CHECK(IS_ERR(child_link), "child-cg-attach",
 		  "err %ld", PTR_ERR(child_link)))
 		goto close_bpf_object;
 	err = connect_send(CHILD_CGROUP);
 	if (CHECK(err, "second-connect-send", "errno %d", errno))
 		goto close_bpf_object;
 	if (CHECK(obj->bss->invocations != 3,
 		  "second-invoke", "invocations=%d", obj->bss->invocations))
 		goto close_bpf_object;
 	key.cgroup_inode_id = get_cgroup_id(PARENT_CGROUP);
 	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 2 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key.cgroup_inode_id = get_cgroup_id(CHILD_CGROUP);
 	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 1 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;

 close_bpf_object:
 	if (!IS_ERR(parent_link))
 		bpf_link__destroy(parent_link);
 	if (!IS_ERR(child_link))
 		bpf_link__destroy(child_link);

 	cg_storage_multi_egress_only__destroy(obj);
 }

 static void test_isolated(int parent_cgroup_fd, int child_cgroup_fd)
 {
 	struct cg_storage_multi_isolated *obj;
 	struct cgroup_value expected_cgroup_value;
 	struct bpf_cgroup_storage_key key;
 	struct bpf_link *parent_egress1_link = NULL, *parent_egress2_link = NULL;
 	struct bpf_link *child_egress1_link = NULL, *child_egress2_link = NULL;
 	struct bpf_link *parent_ingress_link = NULL, *child_ingress_link = NULL;
 	bool err;

 	obj = cg_storage_multi_isolated__open_and_load();
 	if (CHECK(!obj, "skel-load", "errno %d", errno))
 		return;

 	/* Attach to parent cgroup, trigger packet from child.
 	 * Assert that there is three runs, two with parent cgroup egress and
 	 * one with parent cgroup ingress, stored in separate parent storages.
 	 * Also assert that child cgroup's storages does not exist
 	 */
 	parent_egress1_link = bpf_program__attach_cgroup(obj->progs.egress1,
 							 parent_cgroup_fd);
 	if (CHECK(IS_ERR(parent_egress1_link), "parent-egress1-cg-attach",
 		  "err %ld", PTR_ERR(parent_egress1_link)))
 		goto close_bpf_object;
 	parent_egress2_link = bpf_program__attach_cgroup(obj->progs.egress2,
 							 parent_cgroup_fd);
 	if (CHECK(IS_ERR(parent_egress2_link), "parent-egress2-cg-attach",
 		  "err %ld", PTR_ERR(parent_egress2_link)))
 		goto close_bpf_object;
 	parent_ingress_link = bpf_program__attach_cgroup(obj->progs.ingress,
 							 parent_cgroup_fd);
 	if (CHECK(IS_ERR(parent_ingress_link), "parent-ingress-cg-attach",
 		  "err %ld", PTR_ERR(parent_ingress_link)))
 		goto close_bpf_object;
 	err = connect_send(CHILD_CGROUP);
 	if (CHECK(err, "first-connect-send", "errno %d", errno))
 		goto close_bpf_object;
 	if (CHECK(obj->bss->invocations != 3,
 		  "first-invoke", "invocations=%d", obj->bss->invocations))
 		goto close_bpf_object;
 	key.cgroup_inode_id = get_cgroup_id(PARENT_CGROUP);
 	key.attach_type = BPF_CGROUP_INET_EGRESS;
 	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 2 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key.attach_type = BPF_CGROUP_INET_INGRESS;
 	expected_cgroup_value = (struct cgroup_value) { .ingress_pkts = 1 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key.cgroup_inode_id = get_cgroup_id(CHILD_CGROUP);
 	key.attach_type = BPF_CGROUP_INET_EGRESS;
 	if (assert_storage_noexist(obj->maps.cgroup_storage, &key))
 		goto close_bpf_object;
 	key.attach_type = BPF_CGROUP_INET_INGRESS;
 	if (assert_storage_noexist(obj->maps.cgroup_storage, &key))
 		goto close_bpf_object;

 	/* Attach to parent and child cgroup, trigger packet from child.
 	 * Assert that there is six additional runs, parent cgroup egresses and
 	 * ingress, child cgroup egresses and ingress.
 	 * Assert that egree and ingress storages are separate.
 	 */
 	child_egress1_link = bpf_program__attach_cgroup(obj->progs.egress1,
 							child_cgroup_fd);
 	if (CHECK(IS_ERR(child_egress1_link), "child-egress1-cg-attach",
 		  "err %ld", PTR_ERR(child_egress1_link)))
 		goto close_bpf_object;
 	child_egress2_link = bpf_program__attach_cgroup(obj->progs.egress2,
 							child_cgroup_fd);
 	if (CHECK(IS_ERR(child_egress2_link), "child-egress2-cg-attach",
 		  "err %ld", PTR_ERR(child_egress2_link)))
 		goto close_bpf_object;
 	child_ingress_link = bpf_program__attach_cgroup(obj->progs.ingress,
 							child_cgroup_fd);
 	if (CHECK(IS_ERR(child_ingress_link), "child-ingress-cg-attach",
 		  "err %ld", PTR_ERR(child_ingress_link)))
 		goto close_bpf_object;
 	err = connect_send(CHILD_CGROUP);
 	if (CHECK(err, "second-connect-send", "errno %d", errno))
 		goto close_bpf_object;
 	if (CHECK(obj->bss->invocations != 9,
 		  "second-invoke", "invocations=%d", obj->bss->invocations))
 		goto close_bpf_object;
 	key.cgroup_inode_id = get_cgroup_id(PARENT_CGROUP);
 	key.attach_type = BPF_CGROUP_INET_EGRESS;
 	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 4 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key.attach_type = BPF_CGROUP_INET_INGRESS;
 	expected_cgroup_value = (struct cgroup_value) { .ingress_pkts = 2 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key.cgroup_inode_id = get_cgroup_id(CHILD_CGROUP);
 	key.attach_type = BPF_CGROUP_INET_EGRESS;
 	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 2 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key.attach_type = BPF_CGROUP_INET_INGRESS;
 	expected_cgroup_value = (struct cgroup_value) { .ingress_pkts = 1 };
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;

 close_bpf_object:
 	if (!IS_ERR(parent_egress1_link))
 		bpf_link__destroy(parent_egress1_link);
 	if (!IS_ERR(parent_egress2_link))
 		bpf_link__destroy(parent_egress2_link);
 	if (!IS_ERR(parent_ingress_link))
 		bpf_link__destroy(parent_ingress_link);
 	if (!IS_ERR(child_egress1_link))
 		bpf_link__destroy(child_egress1_link);
 	if (!IS_ERR(child_egress2_link))
 		bpf_link__destroy(child_egress2_link);
 	if (!IS_ERR(child_ingress_link))
 		bpf_link__destroy(child_ingress_link);

 	cg_storage_multi_isolated__destroy(obj);
 }

 static void test_shared(int parent_cgroup_fd, int child_cgroup_fd)
 {
 	struct cg_storage_multi_shared *obj;
 	struct cgroup_value expected_cgroup_value;
 	__u64 key;
 	struct bpf_link *parent_egress1_link = NULL, *parent_egress2_link = NULL;
 	struct bpf_link *child_egress1_link = NULL, *child_egress2_link = NULL;
 	struct bpf_link *parent_ingress_link = NULL, *child_ingress_link = NULL;
 	bool err;

 	obj = cg_storage_multi_shared__open_and_load();
 	if (CHECK(!obj, "skel-load", "errno %d", errno))
 		return;

 	/* Attach to parent cgroup, trigger packet from child.
 	 * Assert that there is three runs, two with parent cgroup egress and
 	 * one with parent cgroup ingress.
 	 * Also assert that child cgroup's storage does not exist
 	 */
 	parent_egress1_link = bpf_program__attach_cgroup(obj->progs.egress1,
 							 parent_cgroup_fd);
 	if (CHECK(IS_ERR(parent_egress1_link), "parent-egress1-cg-attach",
 		  "err %ld", PTR_ERR(parent_egress1_link)))
 		goto close_bpf_object;
 	parent_egress2_link = bpf_program__attach_cgroup(obj->progs.egress2,
 							 parent_cgroup_fd);
 	if (CHECK(IS_ERR(parent_egress2_link), "parent-egress2-cg-attach",
 		  "err %ld", PTR_ERR(parent_egress2_link)))
 		goto close_bpf_object;
 	parent_ingress_link = bpf_program__attach_cgroup(obj->progs.ingress,
 							 parent_cgroup_fd);
 	if (CHECK(IS_ERR(parent_ingress_link), "parent-ingress-cg-attach",
 		  "err %ld", PTR_ERR(parent_ingress_link)))
 		goto close_bpf_object;
 	err = connect_send(CHILD_CGROUP);
 	if (CHECK(err, "first-connect-send", "errno %d", errno))
 		goto close_bpf_object;
 	if (CHECK(obj->bss->invocations != 3,
 		  "first-invoke", "invocations=%d", obj->bss->invocations))
 		goto close_bpf_object;
 	key = get_cgroup_id(PARENT_CGROUP);
 	expected_cgroup_value = (struct cgroup_value) {
 		.egress_pkts = 2,
 		.ingress_pkts = 1,
 	};
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key = get_cgroup_id(CHILD_CGROUP);
 	if (assert_storage_noexist(obj->maps.cgroup_storage, &key))
 		goto close_bpf_object;

 	/* Attach to parent and child cgroup, trigger packet from child.
 	 * Assert that there is six additional runs, parent cgroup egresses and
 	 * ingress, child cgroup egresses and ingress.
 	 */
 	child_egress1_link = bpf_program__attach_cgroup(obj->progs.egress1,
 							child_cgroup_fd);
 	if (CHECK(IS_ERR(child_egress1_link), "child-egress1-cg-attach",
 		  "err %ld", PTR_ERR(child_egress1_link)))
 		goto close_bpf_object;
 	child_egress2_link = bpf_program__attach_cgroup(obj->progs.egress2,
 							child_cgroup_fd);
 	if (CHECK(IS_ERR(child_egress2_link), "child-egress2-cg-attach",
 		  "err %ld", PTR_ERR(child_egress2_link)))
 		goto close_bpf_object;
 	child_ingress_link = bpf_program__attach_cgroup(obj->progs.ingress,
 							child_cgroup_fd);
 	if (CHECK(IS_ERR(child_ingress_link), "child-ingress-cg-attach",
 		  "err %ld", PTR_ERR(child_ingress_link)))
 		goto close_bpf_object;
 	err = connect_send(CHILD_CGROUP);
 	if (CHECK(err, "second-connect-send", "errno %d", errno))
 		goto close_bpf_object;
 	if (CHECK(obj->bss->invocations != 9,
 		  "second-invoke", "invocations=%d", obj->bss->invocations))
 		goto close_bpf_object;
 	key = get_cgroup_id(PARENT_CGROUP);
 	expected_cgroup_value = (struct cgroup_value) {
 		.egress_pkts = 4,
 		.ingress_pkts = 2,
 	};
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;
 	key = get_cgroup_id(CHILD_CGROUP);
 	expected_cgroup_value = (struct cgroup_value) {
 		.egress_pkts = 2,
 		.ingress_pkts = 1,
 	};
 	if (assert_storage(obj->maps.cgroup_storage,
 			   &key, &expected_cgroup_value))
 		goto close_bpf_object;

 close_bpf_object:
 	if (!IS_ERR(parent_egress1_link))
 		bpf_link__destroy(parent_egress1_link);
 	if (!IS_ERR(parent_egress2_link))
 		bpf_link__destroy(parent_egress2_link);
 	if (!IS_ERR(parent_ingress_link))
 		bpf_link__destroy(parent_ingress_link);
 	if (!IS_ERR(child_egress1_link))
 		bpf_link__destroy(child_egress1_link);
 	if (!IS_ERR(child_egress2_link))
 		bpf_link__destroy(child_egress2_link);
 	if (!IS_ERR(child_ingress_link))
 		bpf_link__destroy(child_ingress_link);

 	cg_storage_multi_shared__destroy(obj);
 }

 void test_cg_storage_multi(void)
 {
 	int parent_cgroup_fd = -1, child_cgroup_fd = -1;

 	parent_cgroup_fd = test__join_cgroup(PARENT_CGROUP);
 	if (CHECK(parent_cgroup_fd < 0, "cg-create-parent", "errno %d", errno))
 		goto close_cgroup_fd;
 	child_cgroup_fd = create_and_get_cgroup(CHILD_CGROUP);
 	if (CHECK(child_cgroup_fd < 0, "cg-create-child", "errno %d", errno))
 		goto close_cgroup_fd;

 	if (test__start_subtest("egress_only"))
 		test_egress_only(parent_cgroup_fd, child_cgroup_fd);

 	if (test__start_subtest("isolated"))
 		test_isolated(parent_cgroup_fd, child_cgroup_fd);

 	if (test__start_subtest("shared"))
 		test_shared(parent_cgroup_fd, child_cgroup_fd);

 close_cgroup_fd:
 	close(child_cgroup_fd);
 	close(parent_cgroup_fd);
 }
	// SPDX-License-Identifier: GPL-2.0-only

	/*
	* Copyright 2020 Google LLC.
	*/

	#include <test_progs.h>
	#include <cgroup_helpers.h>
	#include <network_helpers.h>

	#include "progs/cg_storage_multi.h"

	#include "cg_storage_multi_egress_only.skel.h"
	#include "cg_storage_multi_isolated.skel.h"
	#include "cg_storage_multi_shared.skel.h"

	#define PARENT_CGROUP "/cgroup_storage"
	#define CHILD_CGROUP "/cgroup_storage/child"

	static int duration;

	static bool assert_storage(struct bpf_map map, const void key,
	struct cgroup_value *expected)
	{
	struct cgroup_value value;
	int map_fd;

	map_fd = bpf_map__fd(map);

	if (CHECK(bpf_map_lookup_elem(map_fd, key, &value) < 0,
	"map-lookup", "errno %d", errno))
	return true;
	if (CHECK(memcmp(&value, expected, sizeof(struct cgroup_value)),
	"assert-storage", "storages differ"))
	return true;

	return false;
	}

	static bool assert_storage_noexist(struct bpf_map map, const void key)
	{
	struct cgroup_value value;
	int map_fd;

	map_fd = bpf_map__fd(map);

	if (CHECK(bpf_map_lookup_elem(map_fd, key, &value) == 0,
	"map-lookup", "succeeded, expected ENOENT"))
	return true;
	if (CHECK(errno != ENOENT,
	"map-lookup", "errno %d, expected ENOENT", errno))
	return true;

	return false;
	}

	static bool connect_send(const char *cgroup_path)
	{
	bool res = true;
	int server_fd = -1, client_fd = -1;

	if (join_cgroup(cgroup_path))
	goto out_clean;

	server_fd = start_server(AF_INET, SOCK_DGRAM, NULL, 0, 0);
	if (server_fd < 0)
	goto out_clean;

	client_fd = connect_to_fd(server_fd, 0);
	if (client_fd < 0)
	goto out_clean;

	if (send(client_fd, "message", strlen("message"), 0) < 0)
	goto out_clean;

	res = false;

	out_clean:
	close(client_fd);
	close(server_fd);
	return res;
	}

	static void test_egress_only(int parent_cgroup_fd, int child_cgroup_fd)
	{
	struct cg_storage_multi_egress_only *obj;
	struct cgroup_value expected_cgroup_value;
	struct bpf_cgroup_storage_key key;
	struct bpf_link parent_link = NULL, child_link = NULL;
	bool err;

	key.attach_type = BPF_CGROUP_INET_EGRESS;

	obj = cg_storage_multi_egress_only__open_and_load();
	if (CHECK(!obj, "skel-load", "errno %d", errno))
	return;

	/* Attach to parent cgroup, trigger packet from child.
	* Assert that there is only one run and in that run the storage is
	* parent cgroup's storage.
	* Also assert that child cgroup's storage does not exist
	*/
	parent_link = bpf_program__attach_cgroup(obj->progs.egress,
	parent_cgroup_fd);
	if (CHECK(IS_ERR(parent_link), "parent-cg-attach",
	"err %ld", PTR_ERR(parent_link)))
	goto close_bpf_object;
	err = connect_send(CHILD_CGROUP);
	if (CHECK(err, "first-connect-send", "errno %d", errno))
	goto close_bpf_object;
	if (CHECK(obj->bss->invocations != 1,
	"first-invoke", "invocations=%d", obj->bss->invocations))
	goto close_bpf_object;
	key.cgroup_inode_id = get_cgroup_id(PARENT_CGROUP);
	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 1 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key.cgroup_inode_id = get_cgroup_id(CHILD_CGROUP);
	if (assert_storage_noexist(obj->maps.cgroup_storage, &key))
	goto close_bpf_object;

	/* Attach to parent and child cgroup, trigger packet from child.
	* Assert that there are two additional runs, one that run with parent
	* cgroup's storage and one with child cgroup's storage.
	*/
	child_link = bpf_program__attach_cgroup(obj->progs.egress,
	child_cgroup_fd);
	if (CHECK(IS_ERR(child_link), "child-cg-attach",
	"err %ld", PTR_ERR(child_link)))
	goto close_bpf_object;
	err = connect_send(CHILD_CGROUP);
	if (CHECK(err, "second-connect-send", "errno %d", errno))
	goto close_bpf_object;
	if (CHECK(obj->bss->invocations != 3,
	"second-invoke", "invocations=%d", obj->bss->invocations))
	goto close_bpf_object;
	key.cgroup_inode_id = get_cgroup_id(PARENT_CGROUP);
	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 2 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key.cgroup_inode_id = get_cgroup_id(CHILD_CGROUP);
	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 1 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;

	close_bpf_object:
	if (!IS_ERR(parent_link))
	bpf_link__destroy(parent_link);
	if (!IS_ERR(child_link))
	bpf_link__destroy(child_link);

	cg_storage_multi_egress_only__destroy(obj);
	}

	static void test_isolated(int parent_cgroup_fd, int child_cgroup_fd)
	{
	struct cg_storage_multi_isolated *obj;
	struct cgroup_value expected_cgroup_value;
	struct bpf_cgroup_storage_key key;
	struct bpf_link parent_egress1_link = NULL, parent_egress2_link = NULL;
	struct bpf_link child_egress1_link = NULL, child_egress2_link = NULL;
	struct bpf_link parent_ingress_link = NULL, child_ingress_link = NULL;
	bool err;

	obj = cg_storage_multi_isolated__open_and_load();
	if (CHECK(!obj, "skel-load", "errno %d", errno))
	return;

	/* Attach to parent cgroup, trigger packet from child.
	* Assert that there is three runs, two with parent cgroup egress and
	* one with parent cgroup ingress, stored in separate parent storages.
	* Also assert that child cgroup's storages does not exist
	*/
	parent_egress1_link = bpf_program__attach_cgroup(obj->progs.egress1,
	parent_cgroup_fd);
	if (CHECK(IS_ERR(parent_egress1_link), "parent-egress1-cg-attach",
	"err %ld", PTR_ERR(parent_egress1_link)))
	goto close_bpf_object;
	parent_egress2_link = bpf_program__attach_cgroup(obj->progs.egress2,
	parent_cgroup_fd);
	if (CHECK(IS_ERR(parent_egress2_link), "parent-egress2-cg-attach",
	"err %ld", PTR_ERR(parent_egress2_link)))
	goto close_bpf_object;
	parent_ingress_link = bpf_program__attach_cgroup(obj->progs.ingress,
	parent_cgroup_fd);
	if (CHECK(IS_ERR(parent_ingress_link), "parent-ingress-cg-attach",
	"err %ld", PTR_ERR(parent_ingress_link)))
	goto close_bpf_object;
	err = connect_send(CHILD_CGROUP);
	if (CHECK(err, "first-connect-send", "errno %d", errno))
	goto close_bpf_object;
	if (CHECK(obj->bss->invocations != 3,
	"first-invoke", "invocations=%d", obj->bss->invocations))
	goto close_bpf_object;
	key.cgroup_inode_id = get_cgroup_id(PARENT_CGROUP);
	key.attach_type = BPF_CGROUP_INET_EGRESS;
	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 2 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key.attach_type = BPF_CGROUP_INET_INGRESS;
	expected_cgroup_value = (struct cgroup_value) { .ingress_pkts = 1 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key.cgroup_inode_id = get_cgroup_id(CHILD_CGROUP);
	key.attach_type = BPF_CGROUP_INET_EGRESS;
	if (assert_storage_noexist(obj->maps.cgroup_storage, &key))
	goto close_bpf_object;
	key.attach_type = BPF_CGROUP_INET_INGRESS;
	if (assert_storage_noexist(obj->maps.cgroup_storage, &key))
	goto close_bpf_object;

	/* Attach to parent and child cgroup, trigger packet from child.
	* Assert that there is six additional runs, parent cgroup egresses and
	* ingress, child cgroup egresses and ingress.
	* Assert that egree and ingress storages are separate.
	*/
	child_egress1_link = bpf_program__attach_cgroup(obj->progs.egress1,
	child_cgroup_fd);
	if (CHECK(IS_ERR(child_egress1_link), "child-egress1-cg-attach",
	"err %ld", PTR_ERR(child_egress1_link)))
	goto close_bpf_object;
	child_egress2_link = bpf_program__attach_cgroup(obj->progs.egress2,
	child_cgroup_fd);
	if (CHECK(IS_ERR(child_egress2_link), "child-egress2-cg-attach",
	"err %ld", PTR_ERR(child_egress2_link)))
	goto close_bpf_object;
	child_ingress_link = bpf_program__attach_cgroup(obj->progs.ingress,
	child_cgroup_fd);
	if (CHECK(IS_ERR(child_ingress_link), "child-ingress-cg-attach",
	"err %ld", PTR_ERR(child_ingress_link)))
	goto close_bpf_object;
	err = connect_send(CHILD_CGROUP);
	if (CHECK(err, "second-connect-send", "errno %d", errno))
	goto close_bpf_object;
	if (CHECK(obj->bss->invocations != 9,
	"second-invoke", "invocations=%d", obj->bss->invocations))
	goto close_bpf_object;
	key.cgroup_inode_id = get_cgroup_id(PARENT_CGROUP);
	key.attach_type = BPF_CGROUP_INET_EGRESS;
	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 4 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key.attach_type = BPF_CGROUP_INET_INGRESS;
	expected_cgroup_value = (struct cgroup_value) { .ingress_pkts = 2 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key.cgroup_inode_id = get_cgroup_id(CHILD_CGROUP);
	key.attach_type = BPF_CGROUP_INET_EGRESS;
	expected_cgroup_value = (struct cgroup_value) { .egress_pkts = 2 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key.attach_type = BPF_CGROUP_INET_INGRESS;
	expected_cgroup_value = (struct cgroup_value) { .ingress_pkts = 1 };
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;

	close_bpf_object:
	if (!IS_ERR(parent_egress1_link))
	bpf_link__destroy(parent_egress1_link);
	if (!IS_ERR(parent_egress2_link))
	bpf_link__destroy(parent_egress2_link);
	if (!IS_ERR(parent_ingress_link))
	bpf_link__destroy(parent_ingress_link);
	if (!IS_ERR(child_egress1_link))
	bpf_link__destroy(child_egress1_link);
	if (!IS_ERR(child_egress2_link))
	bpf_link__destroy(child_egress2_link);
	if (!IS_ERR(child_ingress_link))
	bpf_link__destroy(child_ingress_link);

	cg_storage_multi_isolated__destroy(obj);
	}

	static void test_shared(int parent_cgroup_fd, int child_cgroup_fd)
	{
	struct cg_storage_multi_shared *obj;
	struct cgroup_value expected_cgroup_value;
	__u64 key;
	struct bpf_link parent_egress1_link = NULL, parent_egress2_link = NULL;
	struct bpf_link child_egress1_link = NULL, child_egress2_link = NULL;
	struct bpf_link parent_ingress_link = NULL, child_ingress_link = NULL;
	bool err;

	obj = cg_storage_multi_shared__open_and_load();
	if (CHECK(!obj, "skel-load", "errno %d", errno))
	return;

	/* Attach to parent cgroup, trigger packet from child.
	* Assert that there is three runs, two with parent cgroup egress and
	* one with parent cgroup ingress.
	* Also assert that child cgroup's storage does not exist
	*/
	parent_egress1_link = bpf_program__attach_cgroup(obj->progs.egress1,
	parent_cgroup_fd);
	if (CHECK(IS_ERR(parent_egress1_link), "parent-egress1-cg-attach",
	"err %ld", PTR_ERR(parent_egress1_link)))
	goto close_bpf_object;
	parent_egress2_link = bpf_program__attach_cgroup(obj->progs.egress2,
	parent_cgroup_fd);
	if (CHECK(IS_ERR(parent_egress2_link), "parent-egress2-cg-attach",
	"err %ld", PTR_ERR(parent_egress2_link)))
	goto close_bpf_object;
	parent_ingress_link = bpf_program__attach_cgroup(obj->progs.ingress,
	parent_cgroup_fd);
	if (CHECK(IS_ERR(parent_ingress_link), "parent-ingress-cg-attach",
	"err %ld", PTR_ERR(parent_ingress_link)))
	goto close_bpf_object;
	err = connect_send(CHILD_CGROUP);
	if (CHECK(err, "first-connect-send", "errno %d", errno))
	goto close_bpf_object;
	if (CHECK(obj->bss->invocations != 3,
	"first-invoke", "invocations=%d", obj->bss->invocations))
	goto close_bpf_object;
	key = get_cgroup_id(PARENT_CGROUP);
	expected_cgroup_value = (struct cgroup_value) {
	.egress_pkts = 2,
	.ingress_pkts = 1,
	};
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key = get_cgroup_id(CHILD_CGROUP);
	if (assert_storage_noexist(obj->maps.cgroup_storage, &key))
	goto close_bpf_object;

	/* Attach to parent and child cgroup, trigger packet from child.
	* Assert that there is six additional runs, parent cgroup egresses and
	* ingress, child cgroup egresses and ingress.
	*/
	child_egress1_link = bpf_program__attach_cgroup(obj->progs.egress1,
	child_cgroup_fd);
	if (CHECK(IS_ERR(child_egress1_link), "child-egress1-cg-attach",
	"err %ld", PTR_ERR(child_egress1_link)))
	goto close_bpf_object;
	child_egress2_link = bpf_program__attach_cgroup(obj->progs.egress2,
	child_cgroup_fd);
	if (CHECK(IS_ERR(child_egress2_link), "child-egress2-cg-attach",
	"err %ld", PTR_ERR(child_egress2_link)))
	goto close_bpf_object;
	child_ingress_link = bpf_program__attach_cgroup(obj->progs.ingress,
	child_cgroup_fd);
	if (CHECK(IS_ERR(child_ingress_link), "child-ingress-cg-attach",
	"err %ld", PTR_ERR(child_ingress_link)))
	goto close_bpf_object;
	err = connect_send(CHILD_CGROUP);
	if (CHECK(err, "second-connect-send", "errno %d", errno))
	goto close_bpf_object;
	if (CHECK(obj->bss->invocations != 9,
	"second-invoke", "invocations=%d", obj->bss->invocations))
	goto close_bpf_object;
	key = get_cgroup_id(PARENT_CGROUP);
	expected_cgroup_value = (struct cgroup_value) {
	.egress_pkts = 4,
	.ingress_pkts = 2,
	};
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;
	key = get_cgroup_id(CHILD_CGROUP);
	expected_cgroup_value = (struct cgroup_value) {
	.egress_pkts = 2,
	.ingress_pkts = 1,
	};
	if (assert_storage(obj->maps.cgroup_storage,
	&key, &expected_cgroup_value))
	goto close_bpf_object;

	close_bpf_object:
	if (!IS_ERR(parent_egress1_link))
	bpf_link__destroy(parent_egress1_link);
	if (!IS_ERR(parent_egress2_link))
	bpf_link__destroy(parent_egress2_link);
	if (!IS_ERR(parent_ingress_link))
	bpf_link__destroy(parent_ingress_link);
	if (!IS_ERR(child_egress1_link))
	bpf_link__destroy(child_egress1_link);
	if (!IS_ERR(child_egress2_link))
	bpf_link__destroy(child_egress2_link);
	if (!IS_ERR(child_ingress_link))
	bpf_link__destroy(child_ingress_link);

	cg_storage_multi_shared__destroy(obj);
	}

	void test_cg_storage_multi(void)
	{
	int parent_cgroup_fd = -1, child_cgroup_fd = -1;

	parent_cgroup_fd = test__join_cgroup(PARENT_CGROUP);
	if (CHECK(parent_cgroup_fd < 0, "cg-create-parent", "errno %d", errno))
	goto close_cgroup_fd;
	child_cgroup_fd = create_and_get_cgroup(CHILD_CGROUP);
	if (CHECK(child_cgroup_fd < 0, "cg-create-child", "errno %d", errno))
	goto close_cgroup_fd;

	if (test__start_subtest("egress_only"))
	test_egress_only(parent_cgroup_fd, child_cgroup_fd);

	if (test__start_subtest("isolated"))
	test_isolated(parent_cgroup_fd, child_cgroup_fd);

	if (test__start_subtest("shared"))
	test_shared(parent_cgroup_fd, child_cgroup_fd);

	close_cgroup_fd:
	close(child_cgroup_fd);
	close(parent_cgroup_fd);
	}