// 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; struct sock *sk; 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); sk = (struct sock *)msk; /* be sure the token helpers can dereference sk->sk_prot */ sk->sk_prot = &tcp_prot; sk->sk_protocol = IPPROTO_MPTCP; 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"); MODULE_DESCRIPTION("KUnit tests for MPTCP Token");