def valve_flowdel(self, table_id, match=None, priority=None,
out_port=ofp.OFPP_ANY):
"""Delete matching flows from a table."""
return [
self.valve_flowmod(
table_id,
match=match,
priority=priority,
command=ofp.OFPFC_DELETE,
out_port=out_port,
out_group=ofp.OFPG_ANY),
valve_of.barrier()]
def valve_flowdel(self, table_id, match=None, priority=None,
out_port=ofp.OFPP_ANY):
"""Delete matching flows from a table."""
return [
self.valve_flowmod(
table_id,
match=match,
priority=priority,
command=ofp.OFPFC_DELETE,
out_port=out_port,
out_group=ofp.OFPG_ANY),
valve_of.barrier()]
def valve_flowreorder(self, input_ofmsgs):
"""Reorder flows for better OFA performance."""
# Move all deletes to be first, and add one barrier,
# while preserving order. Platforms that do parallel delete
# will perform better and platforms that don't will have
# at most only one barrier to deal with.
# TODO: further optimizations may be possible - for example,
# reorder adds to be in priority order.
delete_ofmsgs = []
nondelete_ofmsgs = []
for ofmsg in input_ofmsgs:
if valve_of.is_flowdel(ofmsg):
delete_ofmsgs.append(ofmsg)
else:
nondelete_ofmsgs.append(ofmsg)
output_ofmsgs = []
if delete_ofmsgs:
output_ofmsgs.extend(delete_ofmsgs)
output_ofmsgs.append(valve_of.barrier())
output_ofmsgs.extend(nondelete_ofmsgs)
return output_ofmsgs
def valve_flowreorder(self, input_ofmsgs):
"""Reorder flows for better OFA performance."""
# Move all deletes to be first, and add one barrier,
# while preserving order. Platforms that do parallel delete
# will perform better and platforms that don't will have
# at most only one barrier to deal with.
# TODO: further optimizations may be possible - for example,
# reorder adds to be in priority order.
delete_ofmsgs = []
nondelete_ofmsgs = []
for ofmsg in input_ofmsgs:
if valve_of.is_flowdel(ofmsg):
delete_ofmsgs.append(ofmsg)
else:
nondelete_ofmsgs.append(ofmsg)
output_ofmsgs = []
if delete_ofmsgs:
output_ofmsgs.extend(delete_ofmsgs)
output_ofmsgs.append(valve_of.barrier())
output_ofmsgs.extend(nondelete_ofmsgs)
return output_ofmsgs