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IB/uverbs: Expose MPLS flow spec to the user-kernel ABI header

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Add ib_uverbs_flow_spec_mpls to define a rule to match the MPLS
protocol.

The spec includes the generic specs header, type, size and reserved
fields while the filter itself is defined as ib_uverbs_flow_mpls_filter
and includes a single 32bit field named 'label' which consists of:
Bits 0:19  - The MPLS label.
Bits 20:22 - Traffic class field.
Bit  23    - Bottom of stack bit.
Bits 24:31 - Time to live (TTL) field.

Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Ariel Levkovich 2018-05-13 14:33:31 +03:00 committed by Jason Gunthorpe
parent d90e5e5038
commit 0d86bbec71
1 changed files with 23 additions and 0 deletions
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23
include/uapi/rdma/ib_user_verbs.h
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@ -1060,6 +1060,29 @@ struct ib_uverbs_flow_spec_gre {
struct ib_uverbs_flow_gre_filter mask;
};
struct ib_uverbs_flow_mpls_filter {
/* The field includes the entire MPLS label:
* bits 0:19 - label field.
* bits 20:22 - traffic class field.
* bits 23 - bottom of stack bit.
* bits 24:31 - ttl field.
*/
__be32 label;
};
struct ib_uverbs_flow_spec_mpls {
union {
struct ib_uverbs_flow_spec_hdr hdr;
struct {
__u32 type;
__u16 size;
__u16 reserved;
};
};
struct ib_uverbs_flow_mpls_filter val;
struct ib_uverbs_flow_mpls_filter mask;
};
struct ib_uverbs_flow_attr {
__u32 type;
__u16 size;