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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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2
include/linux/netdevice.h
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@@ -786,6 +786,7 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev,
enum {
TC_SETUP_MQPRIO,
TC_SETUP_CLSU32,
TC_SETUP_CLSFLOWER,
};
struct tc_cls_u32_offload;
@@ -795,6 +796,7 @@ struct tc_to_netdev {
union {
u8 tc;
struct tc_cls_u32_offload *cls_u32;
struct tc_cls_flower_offload *cls_flower;
};
};