@@ -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)
{
@@ -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 */
Add a helper function that finds the lookup index in a VCAP instance from the chain id. Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com> --- drivers/net/ethernet/microchip/vcap/vcap_api.c | 17 +++++++++++++++++ .../ethernet/microchip/vcap/vcap_api_client.h | 2 ++ 2 files changed, 19 insertions(+)