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net/flower: Introduce hardware offload support

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This patch is based on a patch made by John Fastabend.
It adds support for offloading cls_flower.
when NETIF_F_HW_TC is on:
  flags = 0       => Rule will be processed twice - by hardware, and if
                     still relevant, by software.
  flags = SKIP_HW => Rull will be processed by software only

If hardware fail/not capabale to apply the rule, operation will NOT
fail. Filter will be processed by SW only.

Acked-by: Jiri Pirko <jiri@mellanox.com>
Suggested-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Amir Vadai <amir@vadai.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amir Vadai
2016-03-08 12:42:29 +02:00
committed by David S. Miller
parent 10f79037b4
commit 5b33f48842
4 changed files with 81 additions and 1 deletions
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14
include/net/pkt_cls.h
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@@ -409,4 +409,18 @@ static inline bool tc_should_offload(struct net_device *dev, u32 flags)
return true;
}
enum tc_fl_command {
TC_CLSFLOWER_REPLACE,
TC_CLSFLOWER_DESTROY,
};
struct tc_cls_flower_offload {
enum tc_fl_command command;
u64 cookie;
struct flow_dissector *dissector;
struct fl_flow_key *mask;
struct fl_flow_key *key;
struct tcf_exts *exts;
};
#endif