cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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token_test.c (4083B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <kunit/test.h>
      3
      4#include "protocol.h"
      5
      6static 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);
     14	sock_net_set((struct sock *)req, &init_net);
     15	return req;
     16}
     17
     18static 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);
     26	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, req->token));
     27
     28	/* cleanup */
     29	mptcp_token_destroy_request((struct request_sock *)req);
     30}
     31
     32static 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
     42static 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
     52static 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);
     59	sock_net_set((struct sock *)msk, &init_net);
     60	return msk;
     61}
     62
     63static 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);
     79	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, ctx->token));
     80	KUNIT_EXPECT_EQ(test, 2, (int)refcount_read(&sk->sk_refcnt));
     81
     82	mptcp_token_destroy(msk);
     83	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, ctx->token));
     84}
     85
     86static 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);
     95	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, msk->token));
     96
     97	/* this is now a no-op */
     98	mptcp_token_destroy_request((struct request_sock *)req);
     99	KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(&init_net, msk->token));
    100
    101	/* cleanup */
    102	mptcp_token_destroy(msk);
    103}
    104
    105static 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);
    121	KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(&init_net, msk->token));
    122
    123	/* cleanup */
    124	mptcp_token_destroy(msk);
    125}
    126
    127static 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
    135static struct kunit_suite mptcp_token_suite = {
    136	.name = "mptcp-token",
    137	.test_cases = mptcp_token_test_cases,
    138};
    139
    140kunit_test_suite(mptcp_token_suite);
    141
    142MODULE_LICENSE("GPL");