[PATCH v8 0/2] lib: checksum: Fix issues with checksum tests

[Charlie Jenkins <charlie@rivosinc.com>]

The ip_fast_csum and csum_ipv6_magic tests did not work on all
architectures due to differences in endianness and misaligned access
support. Fix those issues by changing endianness of data and aligning
the data.

Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
---
Changes in v8:
- Change ipv6_magic test case to use memcpy to avoid misalignment
- Add Guenter's tested-by to patch 1 but not patch 2 since the later has
  changed
- Link to v7: https://lore.kernel.org/r/20240212-fix_sparse_errors_checksum_tests-v7-0-bbd3b8f64746@rivosinc.com

Changes in v7:
- Incorporate feedback for test_csum_ipv6_magic from Guenter and Al
- Link to v6: https://lore.kernel.org/r/20240207-fix_sparse_errors_checksum_tests-v6-0-4caa9629705b@rivosinc.com

Changes in v6:
- Fix for big endian (Guenter)
- Link to v5: https://lore.kernel.org/r/20240130-fix_sparse_errors_checksum_tests-v5-0-4d8a0a337e5e@rivosinc.com

Changes in v5:
- Add Guenter's tested-by
- CC Andrew Morton
- Link to v4: https://lore.kernel.org/r/20240124-fix_sparse_errors_checksum_tests-v4-0-bc2b8d23a35c@rivosinc.com

Changes in v4:
- Pad test values with zeroes (David)
- Link to v3: https://lore.kernel.org/r/20240123-fix_sparse_errors_checksum_tests-v3-0-efecc7f94297@rivosinc.com

Changes in v3:
- Don't read memory out of bounds
- Link to v2: https://lore.kernel.org/r/20240123-fix_sparse_errors_checksum_tests-v2-0-b306b6ce7da5@rivosinc.com

Changes in v2:
- Add additional patch to fix alignment issues
- Link to v1: https://lore.kernel.org/r/20240119-fix_sparse_errors_checksum_tests-v1-1-2d3df86d8d78@rivosinc.com

---
Charlie Jenkins (2):
      lib: checksum: Fix type casting in checksum kunits
      lib: checksum: Use aligned accesses for ip_fast_csum and csum_ipv6_magic tests

 lib/checksum_kunit.c | 398 ++++++++++++++++++---------------------------------
 1 file changed, 138 insertions(+), 260 deletions(-)
---
base-commit: 6613476e225e090cc9aad49be7fa504e290dd33d
change-id: 20240119-fix_sparse_errors_checksum_tests-26b86b34d784
-- 
- Charlie