tipc: split up function tipc_msg_eval()
The function tipc_msg_eval() is in reality doing two related, but different tasks. First it tries to find a new destination for named messages, in case there was no first lookup, or if the first lookup failed. Second, it does what its name suggests, evaluating the validity of the message and its destination, and returning an appropriate error code depending on the result. This is confusing, and in this commit we choose to break it up into two functions. A new function, tipc_msg_lookup_dest(), first attempts to find a new destination, if the message is of the right type. If this lookup fails, or if the message should not be subject to a second lookup, the already existing tipc_msg_reverse() is called. This function performs prepares the message for rejection, if applicable. 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>
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