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Commit e696028a authored by Or Gerlitz's avatar Or Gerlitz Committed by David S. Miller
Browse files

net/sched: Reflect HW offload status 



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: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: default avatarAmir Vadai <amir@vadai.me>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7a335ada

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 */