Add unaligned descriptor test for frame size of 4001. Using an odd frame size ensures that the end of the UMEM is not near a page boundary. This allows testing descriptors that staddle the end of the UMEM but not a page.
This test used to fail without the previous commit ("xsk: Add check for unaligned descriptors that overrun UMEM").
Sorry I forgot to update the commit message with the new commit label. If accepted, please change the second paragraph to :
This test used to fail without the previous commit ("xsk: Fix unaligned descriptor validation").