[linux-block.git] / net / mptcp / token_test.c

// SPDX-License-Identifier: GPL-2.0
#include <kunit/test.h>

#include "protocol.h"

static struct mptcp_subflow_request_sock *build_req_sock(struct kunit *test)
{
	struct mptcp_subflow_request_sock *req;

	req = kunit_kzalloc(test, sizeof(struct mptcp_subflow_request_sock),
			    GFP_USER);
	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, req);
	mptcp_token_init_request((struct request_sock *)req);
	sock_net_set((struct sock *)req, &init_net);
	return req;
}

static void mptcp_token_test_req_basic(struct kunit *test)
{
	struct mptcp_subflow_request_sock *req = build_req_sock(test);
	struct mptcp_sock *null_msk = NULL;

	KUNIT_ASSERT_EQ(test, 0,
			mptcp_token_new_request((struct request_sock *)req));
	KUNIT_EXPECT_NE(test, 0, (int)req->token);
	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, req->token));

	/* cleanup */
	mptcp_token_destroy_request((struct request_sock *)req);
}

static struct inet_connection_sock *build_icsk(struct kunit *test)
{
	struct inet_connection_sock *icsk;

	icsk = kunit_kzalloc(test, sizeof(struct inet_connection_sock),
			     GFP_USER);
	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, icsk);
	return icsk;
}

static struct mptcp_subflow_context *build_ctx(struct kunit *test)
{
	struct mptcp_subflow_context *ctx;

	ctx = kunit_kzalloc(test, sizeof(struct mptcp_subflow_context),
			    GFP_USER);
	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, ctx);
	return ctx;
}

static struct mptcp_sock *build_msk(struct kunit *test)
{
	struct mptcp_sock *msk;

	msk = kunit_kzalloc(test, sizeof(struct mptcp_sock), GFP_USER);
	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, msk);
	refcount_set(&((struct sock *)msk)->sk_refcnt, 1);
	sock_net_set((struct sock *)msk, &init_net);
	return msk;
}

static void mptcp_token_test_msk_basic(struct kunit *test)
{
	struct inet_connection_sock *icsk = build_icsk(test);
	struct mptcp_subflow_context *ctx = build_ctx(test);
	struct mptcp_sock *msk = build_msk(test);
	struct mptcp_sock *null_msk = NULL;
	struct sock *sk;

	rcu_assign_pointer(icsk->icsk_ulp_data, ctx);
	ctx->conn = (struct sock *)msk;
	sk = (struct sock *)msk;

	KUNIT_ASSERT_EQ(test, 0,
			mptcp_token_new_connect((struct sock *)icsk));
	KUNIT_EXPECT_NE(test, 0, (int)ctx->token);
	KUNIT_EXPECT_EQ(test, ctx->token, msk->token);
	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, ctx->token));
	KUNIT_EXPECT_EQ(test, 2, (int)refcount_read(&sk->sk_refcnt));

	mptcp_token_destroy(msk);
	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, ctx->token));
}

static void mptcp_token_test_accept(struct kunit *test)
{
	struct mptcp_subflow_request_sock *req = build_req_sock(test);
	struct mptcp_sock *msk = build_msk(test);

	KUNIT_ASSERT_EQ(test, 0,
			mptcp_token_new_request((struct request_sock *)req));
	msk->token = req->token;
	mptcp_token_accept(req, msk);
	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, msk->token));

	/* this is now a no-op */
	mptcp_token_destroy_request((struct request_sock *)req);
	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, msk->token));

	/* cleanup */
	mptcp_token_destroy(msk);
}

static void mptcp_token_test_destroyed(struct kunit *test)
{
	struct mptcp_subflow_request_sock *req = build_req_sock(test);
	struct mptcp_sock *msk = build_msk(test);
	struct mptcp_sock *null_msk = NULL;
	struct sock *sk;

	sk = (struct sock *)msk;

	KUNIT_ASSERT_EQ(test, 0,
			mptcp_token_new_request((struct request_sock *)req));
	msk->token = req->token;
	mptcp_token_accept(req, msk);

	/* simulate race on removal */
	refcount_set(&sk->sk_refcnt, 0);
	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, msk->token));

	/* cleanup */
	mptcp_token_destroy(msk);
}

static struct kunit_case mptcp_token_test_cases[] = {
	KUNIT_CASE(mptcp_token_test_req_basic),
	KUNIT_CASE(mptcp_token_test_msk_basic),
	KUNIT_CASE(mptcp_token_test_accept),
	KUNIT_CASE(mptcp_token_test_destroyed),
	{}
};

static struct kunit_suite mptcp_token_suite = {
	.name = "mptcp-token",
	.test_cases = mptcp_token_test_cases,
};

kunit_test_suite(mptcp_token_suite);

MODULE_LICENSE("GPL");
Commit	Line	Data
a8ee9c9b PA	1	// SPDX-License-Identifier: GPL-2.0
	2	#include <kunit/test.h>
	3
	4	#include "protocol.h"
	5
	6	static struct mptcp_subflow_request_sock build_req_sock(struct kunit test)
	7	{
	8	struct mptcp_subflow_request_sock *req;
	9
	10	req = kunit_kzalloc(test, sizeof(struct mptcp_subflow_request_sock),
	11	GFP_USER);
	12	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, req);
	13	mptcp_token_init_request((struct request_sock *)req);
ea1300b9	14	sock_net_set((struct sock *)req, &init_net);
a8ee9c9b PA	15	return req;
	16	}
	17
	18	static void mptcp_token_test_req_basic(struct kunit *test)
	19	{
	20	struct mptcp_subflow_request_sock *req = build_req_sock(test);
	21	struct mptcp_sock *null_msk = NULL;
	22
	23	KUNIT_ASSERT_EQ(test, 0,
	24	mptcp_token_new_request((struct request_sock *)req));
	25	KUNIT_EXPECT_NE(test, 0, (int)req->token);
ea1300b9	26	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, req->token));
a8ee9c9b PA	27
	28	/* cleanup */
	29	mptcp_token_destroy_request((struct request_sock *)req);
	30	}
	31
	32	static struct inet_connection_sock build_icsk(struct kunit test)
	33	{
	34	struct inet_connection_sock *icsk;
	35
	36	icsk = kunit_kzalloc(test, sizeof(struct inet_connection_sock),
	37	GFP_USER);
	38	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, icsk);
	39	return icsk;
	40	}
	41
	42	static struct mptcp_subflow_context build_ctx(struct kunit test)
	43	{
	44	struct mptcp_subflow_context *ctx;
	45
	46	ctx = kunit_kzalloc(test, sizeof(struct mptcp_subflow_context),
	47	GFP_USER);
	48	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, ctx);
	49	return ctx;
	50	}
	51
	52	static struct mptcp_sock build_msk(struct kunit test)
	53	{
	54	struct mptcp_sock *msk;
	55
	56	msk = kunit_kzalloc(test, sizeof(struct mptcp_sock), GFP_USER);
	57	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, msk);
	58	refcount_set(&((struct sock *)msk)->sk_refcnt, 1);
ea1300b9	59	sock_net_set((struct sock *)msk, &init_net);
a8ee9c9b PA	60	return msk;
	61	}
	62
	63	static void mptcp_token_test_msk_basic(struct kunit *test)
	64	{
	65	struct inet_connection_sock *icsk = build_icsk(test);
	66	struct mptcp_subflow_context *ctx = build_ctx(test);
	67	struct mptcp_sock *msk = build_msk(test);
	68	struct mptcp_sock *null_msk = NULL;
	69	struct sock *sk;
	70
	71	rcu_assign_pointer(icsk->icsk_ulp_data, ctx);
	72	ctx->conn = (struct sock *)msk;
	73	sk = (struct sock *)msk;
	74
	75	KUNIT_ASSERT_EQ(test, 0,
	76	mptcp_token_new_connect((struct sock *)icsk));
	77	KUNIT_EXPECT_NE(test, 0, (int)ctx->token);
	78	KUNIT_EXPECT_EQ(test, ctx->token, msk->token);
ea1300b9	79	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, ctx->token));
a8ee9c9b PA	80	KUNIT_EXPECT_EQ(test, 2, (int)refcount_read(&sk->sk_refcnt));
	81
	82	mptcp_token_destroy(msk);
ea1300b9	83	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, ctx->token));
a8ee9c9b PA	84	}
	85
	86	static void mptcp_token_test_accept(struct kunit *test)
	87	{
	88	struct mptcp_subflow_request_sock *req = build_req_sock(test);
	89	struct mptcp_sock *msk = build_msk(test);
	90
	91	KUNIT_ASSERT_EQ(test, 0,
	92	mptcp_token_new_request((struct request_sock *)req));
	93	msk->token = req->token;
	94	mptcp_token_accept(req, msk);
ea1300b9	95	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, msk->token));
a8ee9c9b PA	96
	97	/* this is now a no-op */
	98	mptcp_token_destroy_request((struct request_sock *)req);
ea1300b9	99	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, msk->token));
a8ee9c9b PA	100
	101	/* cleanup */
	102	mptcp_token_destroy(msk);
	103	}
	104
	105	static void mptcp_token_test_destroyed(struct kunit *test)
	106	{
	107	struct mptcp_subflow_request_sock *req = build_req_sock(test);
	108	struct mptcp_sock *msk = build_msk(test);
	109	struct mptcp_sock *null_msk = NULL;
	110	struct sock *sk;
	111
	112	sk = (struct sock *)msk;
	113
	114	KUNIT_ASSERT_EQ(test, 0,
	115	mptcp_token_new_request((struct request_sock *)req));
	116	msk->token = req->token;
	117	mptcp_token_accept(req, msk);
	118
	119	/* simulate race on removal */
	120	refcount_set(&sk->sk_refcnt, 0);
ea1300b9	121	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, msk->token));
a8ee9c9b PA	122
	123	/* cleanup */
	124	mptcp_token_destroy(msk);
	125	}
	126
	127	static struct kunit_case mptcp_token_test_cases[] = {
	128	KUNIT_CASE(mptcp_token_test_req_basic),
	129	KUNIT_CASE(mptcp_token_test_msk_basic),
	130	KUNIT_CASE(mptcp_token_test_accept),
	131	KUNIT_CASE(mptcp_token_test_destroyed),
	132	{}
	133	};
	134
	135	static struct kunit_suite mptcp_token_suite = {
	136	.name = "mptcp-token",
	137	.test_cases = mptcp_token_test_cases,
	138	};
	139
	140	kunit_test_suite(mptcp_token_suite);
	141
	142	MODULE_LICENSE("GPL");