IB/uverbs: Introduce a GRE steering match filter

Adding a new GRE steering match filter that can match against
key and protocol fields.

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>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 9fc8a825aa28..e3ec61fe6060 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1852,6 +1852,7 @@ enum ib_flow_spec_type {
         IB_FLOW_SPEC_TCP                = 0x40,
         IB_FLOW_SPEC_UDP                = 0x41,
         IB_FLOW_SPEC_VXLAN_TUNNEL       = 0x50,
+        IB_FLOW_SPEC_GRE                = 0x51,
         IB_FLOW_SPEC_INNER              = 0x100,
         /* Actions */
         IB_FLOW_SPEC_ACTION_TAG         = 0x1000,
@@ -1994,6 +1995,21 @@ struct ib_flow_spec_esp {
         struct ib_flow_esp_filter     mask;
 };
 
+struct ib_flow_gre_filter {
+        __be16 c_ks_res0_ver;
+        __be16 protocol;
+        __be32 key;
+        /* Must be last */
+        u8      real_sz[0];
+};
+
+struct ib_flow_spec_gre {
+        u32                           type;
+        u16                           size;
+        struct ib_flow_gre_filter     val;
+        struct ib_flow_gre_filter     mask;
+};
+
 struct ib_flow_spec_action_tag {
         enum ib_flow_spec_type        type;
         u16                           size;
@@ -2023,6 +2039,7 @@ union ib_flow_spec {
         struct ib_flow_spec_ipv6        ipv6;
         struct ib_flow_spec_tunnel      tunnel;
         struct ib_flow_spec_esp         esp;
+        struct ib_flow_spec_gre         gre;
         struct ib_flow_spec_action_tag  flow_tag;
         struct ib_flow_spec_action_drop drop;
         struct ib_flow_spec_action_handle action;