expr: bitwise: add support for kernel space AND, OR and XOR operations

Hitherto, the kernel has only supported boolean operations of the form:

  dst = (src & mask) ^ xor

where `src` is held in a register, and `mask` and `xor` are immediate
values.  User space has converted AND, OR and XOR operations to this
form, and so one operand has had to be immediate.  The kernel now
supports performing AND, OR and XOR operations directly, on one register
and an immediate value or on two registers, so we make that support
available to user space.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions