Commit 7de1dcad authored by Steen Hegelund's avatar Steen Hegelund Committed by David S. Miller
Browse files

net: microchip: sparx5: Find VCAP lookup from chain id 



Add a helper function that finds the lookup index in a VCAP instance from
the chain id.

Signed-off-by: default avatarSteen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d6c2964d

drivers/net/ethernet/microchip/vcap/vcap_api.c

+17 −0
Original line number Diff line number Diff line
@@ -644,6 +644,23 @@ static int vcap_write_rule(struct vcap_rule_internal *ri) 
	return 0;

}



/* Convert a chain id to a VCAP lookup index */

int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid)

{

	int lookup_first = admin->vinst * admin->lookups_per_instance;

	int lookup_last = lookup_first + admin->lookups_per_instance;

	int cid_next = admin->first_cid + VCAP_CID_LOOKUP_SIZE;

	int cid = admin->first_cid;

	int lookup;



	for (lookup = lookup_first; lookup < lookup_last; ++lookup,

	     cid += VCAP_CID_LOOKUP_SIZE, cid_next += VCAP_CID_LOOKUP_SIZE)

		if (cur_cid >= cid && cur_cid < cid_next)

			return lookup;

	return 0;

}

EXPORT_SYMBOL_GPL(vcap_chain_id_to_lookup);



/* Lookup a vcap instance using chain id */

struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid)

{

drivers/net/ethernet/microchip/vcap/vcap_api_client.h

+2 −0
Original line number Diff line number Diff line
@@ -184,6 +184,8 @@ int vcap_rule_add_action_u32(struct vcap_rule *rule, 
			     enum vcap_action_field action, u32 value);



/* VCAP lookup operations */

/* Convert a chain id to a VCAP lookup index */

int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid);

/* Lookup a vcap instance using chain id */

struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid);

/* Find information on a key field in a rule */