mptcp: avoid atomic bit manipulation when possible
Currently the msk->flags bitmask carries both state for the mptcp_release_cb() - mostly touched under the mptcp data lock - and others state info touched even outside such lock scope. As a consequence, msk->flags is always manipulated with atomic operations. This change splits such bitmask in two separate fields, so that we use plain bit operations when touching the cb-related info. The MPTCP_PUSH_PENDING bit needs additional care, as it is the only CB related field currently accessed either under the mptcp data lock or the mptcp socket lock. Let's add another mask just for such bit's sake. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Showing
Please register or sign in to comment