// SPDX-License-Identifier: GPL-2.0+ /* * Test cases csum_partial, csum_fold, ip_fast_csum, csum_ipv6_magic */ #include <kunit/test.h> #include <asm/checksum.h> #include <net/ip6_checksum.h> #define MAX_LEN … #define MAX_ALIGN … #define TEST_BUFLEN … #define IPv4_MIN_WORDS … #define IPv4_MAX_WORDS … #define NUM_IPv6_TESTS … #define NUM_IP_FAST_CSUM_TESTS … /* Values for a little endian CPU. Byte swap each half on big endian CPU. */ static const u32 random_init_sum = …; static const u8 random_buf[] = …; /* Values for a little endian CPU. Byte swap on big endian CPU. */ static const u16 expected_results[] = …; /* Values for a little endian CPU. Byte swap each half on big endian CPU. */ static const u32 init_sums_no_overflow[] = …; static const u16 expected_csum_ipv6_magic[] = …; static const u16 expected_fast_csum[] = …; static u8 tmp_buf[TEST_BUFLEN]; #define full_csum(buff, len, sum) … #define CHECK_EQ(lhs, rhs) … static __sum16 to_sum16(u16 x) { … } /* This function swaps the bytes inside each half of a __wsum */ static __wsum to_wsum(u32 x) { … } static void assert_setup_correct(struct kunit *test) { … } /* * Test with randomized input (pre determined random with known results). */ static void test_csum_fixed_random_inputs(struct kunit *test) { … } /* * All ones input test. If there are any missing carry operations, it fails. */ static void test_csum_all_carry_inputs(struct kunit *test) { … } /* * Test with input that alone doesn't cause any carries. By selecting the * maximum initial sum, this allows us to test that there are no carries * where there shouldn't be. */ static void test_csum_no_carry_inputs(struct kunit *test) { … } static void test_ip_fast_csum(struct kunit *test) { … } static void test_csum_ipv6_magic(struct kunit *test) { … } static struct kunit_case __refdata checksum_test_cases[] = …; static struct kunit_suite checksum_test_suite = …; kunit_test_suites(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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