nfp: add control message passing capabilities to flower offloads
Previously the flower offloads never sends messages to the hardware, and never registers a handler for receiving messages from hardware. This patch enables the flower offloads to send control messages to hardware when adding and removing flow rules. Additionally it registers a control message rx handler for receiving stats updates from hardware for each offloaded flow. Additionally this patch adds 4 control message types; Add, modify and delete flow, as well as flow stats. It also allows nfp_flower_cmsg_get_data() to be used outside of cmsg.c. Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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