net/sched: Reflect HW offload status (e696028a) · Commits · 戴 / test

Currently there is no way of querying whether a filter is offloaded to HW or not when using "both" policy (where none of skip_sw or skip_hw flags are set by user-space). Add two new flags, "in hw" and "not in hw" such that user space can determine if a filter is actually offloaded to hw or not. The "in hw" UAPI semantics was chosen so it's similar to the "skip hw" flag logic. If none of these two flags are set, this signals running over older kernel. Signed-off-by:

Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by:

Amir Vadai <amir@vadai.me> Acked-by:

Jiri Pirko <jiri@mellanox.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

include/net/pkt_cls.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -481,6 +481,11 @@ static inline bool tc_flags_valid(u32 flags)
		return true;
		}

		static inline bool tc_in_hw(u32 flags)
		{
		return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false;
		}

		enum tc_fl_command {
		TC_CLSFLOWER_REPLACE,
		TC_CLSFLOWER_DESTROY,

include/uapi/linux/pkt_cls.h

+4 −2

Original line number	Diff line number	Diff line
		@@ -103,8 +103,10 @@ enum {
		#define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1)

		/* tca flags definitions */
		#define TCA_CLS_FLAGS_SKIP_HW (1 << 0)
		#define TCA_CLS_FLAGS_SKIP_SW (1 << 1)
		#define TCA_CLS_FLAGS_SKIP_HW (1 << 0) /* don't offload filter to HW */
		#define TCA_CLS_FLAGS_SKIP_SW (1 << 1) /* don't use filter in SW */
		#define TCA_CLS_FLAGS_IN_HW (1 << 2) /* filter is offloaded to HW */
		#define TCA_CLS_FLAGS_NOT_IN_HW (1 << 3) /* filter isn't offloaded to HW */

		/* U32 filters */

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