tree 1253880332cf983760ba27a157f6b77aa11859e4
parent cf2157f88a5abf1a64b8c51a737a35e918dc67e5
author Jon Paul Maloy <jon.maloy@ericsson.com> 1426277287 -0400
committer David S. Miller <davem@davemloft.net> 1426358312 -0400

tipc: eliminate unnecessary linearization of incoming buffers

Currently, TIPC linearizes all incoming buffers directly at reception
before passing them upwards in the stack. This is clearly a waste of
CPU resources, and must be avoided.

In this commit, we eliminate this unnecessary linearization. We still
ensure that at least the message header is linear, and that the buffer
is linearized where this is still needed, i.e. when unbundling and when
reversing messages.

In addition, we ensure that fragmented messages are validated after
reassembly before delivering them upwards in the stack.

Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>