IB/uverbs: Add action_handle flow steering specification
Binding a flow_action to flow steering rule requires using a new
specification. Therefore, adding such an IB_FLOW_SPEC_ACTION_HANDLE flow
specification.
Flow steering rules could use flow_action(s) and as of that we need to
avoid deleting flow_action(s) as long as they're being used.
Moreover, when the attached rules are deleted, action_handle reference
count should be decremented. Introducing a new mechanism of flow
resources to keep track on the attached action_handle(s). Later on, this
mechanism should be extended to other attached flow steering resources
like flow counters.
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 49da921..c1b9cba 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1836,6 +1836,7 @@ enum ib_flow_spec_type {
/* Actions */
IB_FLOW_SPEC_ACTION_TAG = 0x1000,
IB_FLOW_SPEC_ACTION_DROP = 0x1001,
+ IB_FLOW_SPEC_ACTION_HANDLE = 0x1002,
};
#define IB_FLOW_SPEC_LAYER_MASK 0xF0
#define IB_FLOW_SPEC_SUPPORT_LAYERS 8
@@ -1969,6 +1970,12 @@ struct ib_flow_spec_action_drop {
u16 size;
};
+struct ib_flow_spec_action_handle {
+ enum ib_flow_spec_type type;
+ u16 size;
+ struct ib_flow_action *act;
+};
+
union ib_flow_spec {
struct {
u32 type;
@@ -1982,6 +1989,7 @@ union ib_flow_spec {
struct ib_flow_spec_tunnel tunnel;
struct ib_flow_spec_action_tag flow_tag;
struct ib_flow_spec_action_drop drop;
+ struct ib_flow_spec_action_handle action;
};
struct ib_flow_attr {