Commit 2ce12410 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

net: tc_skbedit: Make the skbedit priority offloadable 



The skbedit action "priority" is used for adjusting SKB priority. Allow
drivers to offload the action by introducing two new skbedit getters and a
new flow action, and initializing appropriately in tc_setup_flow_action().

Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Reviewed-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fe93f0b2

include/net/flow_offload.h

+2 −0
Original line number Diff line number Diff line
@@ -137,6 +137,7 @@ enum flow_action_id { 
	FLOW_ACTION_CSUM,

	FLOW_ACTION_MARK,

	FLOW_ACTION_PTYPE,

	FLOW_ACTION_PRIORITY,

	FLOW_ACTION_WAKE,

	FLOW_ACTION_QUEUE,

	FLOW_ACTION_SAMPLE,
@@ -211,6 +212,7 @@ struct flow_action_entry { 
		u32			csum_flags;	/* FLOW_ACTION_CSUM */

		u32			mark;		/* FLOW_ACTION_MARK */

		u16                     ptype;          /* FLOW_ACTION_PTYPE */

		u32			priority;	/* FLOW_ACTION_PRIORITY */

		struct {				/* FLOW_ACTION_QUEUE */

			u32		ctx;

			u32		index;

include/net/tc_act/tc_skbedit.h

+17 −0
Original line number Diff line number Diff line
@@ -77,4 +77,21 @@ static inline u32 tcf_skbedit_ptype(const struct tc_action *a) 
	return ptype;

}



/* Return true iff action is priority */

static inline bool is_tcf_skbedit_priority(const struct tc_action *a)

{

	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_PRIORITY);

}



static inline u32 tcf_skbedit_priority(const struct tc_action *a)

{

	u32 priority;



	rcu_read_lock();

	priority = rcu_dereference(to_skbedit(a)->params)->priority;

	rcu_read_unlock();



	return priority;

}



#endif /* __NET_TC_SKBEDIT_H */

net/sched/cls_api.c

+3 −0
Original line number Diff line number Diff line
@@ -3665,6 +3665,9 @@ int tc_setup_flow_action(struct flow_action *flow_action, 
		} else if (is_tcf_skbedit_ptype(act)) {

			entry->id = FLOW_ACTION_PTYPE;

			entry->ptype = tcf_skbedit_ptype(act);

		} else if (is_tcf_skbedit_priority(act)) {

			entry->id = FLOW_ACTION_PRIORITY;

			entry->priority = tcf_skbedit_priority(act);

		} else {

			err = -EOPNOTSUPP;

			goto err_out_locked;

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