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IB/uverbs: Add action_handle flow steering specification

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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>
This commit is contained in:
Matan Barak 2018-03-28 09:27:46 +03:00 • committed by Jason Gunthorpe
commit 9b82844197
5 changed files with 121 additions and 8 deletions
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13
include/uapi/rdma/ib_user_verbs.h
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@ -984,6 +984,19 @@ struct ib_uverbs_flow_spec_action_drop {
};
};
struct ib_uverbs_flow_spec_action_handle {
union {
struct ib_uverbs_flow_spec_hdr hdr;
struct {
__u32 type;
__u16 size;
__u16 reserved;
};
};
__u32 handle;
__u32 reserved1;
};
struct ib_uverbs_flow_tunnel_filter {
__be32 tunnel_id;
};