From 20b6563ba164efc1ae24f637cb269bb3a9eb5467 Mon Sep 17 00:00:00 2001 From: Ariel Levkovich Date: Sun, 13 May 2018 14:33:29 +0300 Subject: IB/uverbs: Expose GRE flow spec to the user-kernel ABI header Add ib_uverbs_flow_spec_gre to define a rule to match the GRE encapsulation protocol. The spec includes the generic specs header, type, size and reserved fields while the filter itself is defined as ib_uverbs_flow_gre_filter and includes: 1. Checksum present bit, key present bit and version bits in a single 16bit field. 2. Protocol type field - Indicates the ether protocol type of the encapsulated payload. 3. Key field - present if key bit is set and contains an application specific key value. Reviewed-by: Mark Bloch Signed-off-by: Ariel Levkovich Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- include/uapi/rdma/ib_user_verbs.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include/uapi/rdma') diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h index 6aeb03315b0b..77c1a9a76e71 100644 --- a/include/uapi/rdma/ib_user_verbs.h +++ b/include/uapi/rdma/ib_user_verbs.h @@ -1033,6 +1033,33 @@ struct ib_uverbs_flow_spec_esp { struct ib_uverbs_flow_spec_esp_filter mask; }; +struct ib_uverbs_flow_gre_filter { + /* c_ks_res0_ver field is bits 0-15 in offset 0 of a standard GRE header: + * bit 0 - C - checksum bit. + * bit 1 - reserved. set to 0. + * bit 2 - key bit. + * bit 3 - sequence number bit. + * bits 4:12 - reserved. set to 0. + * bits 13:15 - GRE version. + */ + __be16 c_ks_res0_ver; + __be16 protocol; + __be32 key; +}; + +struct ib_uverbs_flow_spec_gre { + union { + struct ib_uverbs_flow_spec_hdr hdr; + struct { + __u32 type; + __u16 size; + __u16 reserved; + }; + }; + struct ib_uverbs_flow_gre_filter val; + struct ib_uverbs_flow_gre_filter mask; +}; + struct ib_uverbs_flow_attr { __u32 type; __u16 size; -- cgit