[PATCH] Add mask option for qos_flows miss parameter

Hi,

The attached patch adds a mask option to the qos_flows miss
configuration value. The reason for this is to allow the preserved
mark/TOS value from the server to be altered slightly rather than
overwritten completely.

Example usage. The following will preserve the netfilter mark, but will
ensure that the (9th) bit specified in the miss value will be set to 1
in the preserved mark:

qos_flows mark miss=0x100/0xF00

Andy