IB/core: Export ib_create/destroy_flow through uverbs

Implement ib_uverbs_create_flow() and ib_uverbs_destroy_flow() to
support flow steering for user space applications.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

2 files changed, 89 insertions, 1 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 6f874b00491a..274205d4df97 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -954,6 +954,7 @@ struct ib_ucontext {
         struct list_head        srq_list;
         struct list_head        ah_list;
         struct list_head        xrcd_list;
+        struct list_head        rule_list;
         int                     closing;
 };
 
diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h
index 61535aa0a62e..0b233c56b0e4 100644
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -86,7 +86,9 @@ enum {
         IB_USER_VERBS_CMD_OPEN_XRCD,
         IB_USER_VERBS_CMD_CLOSE_XRCD,
         IB_USER_VERBS_CMD_CREATE_XSRQ,
-        IB_USER_VERBS_CMD_OPEN_QP
+        IB_USER_VERBS_CMD_OPEN_QP,
+        IB_USER_VERBS_CMD_CREATE_FLOW = IB_USER_VERBS_CMD_THRESHOLD,
+        IB_USER_VERBS_CMD_DESTROY_FLOW
 };
 
 /*
@@ -694,6 +696,91 @@ struct ib_uverbs_detach_mcast {
         __u64 driver_data[0];
 };
 
+struct ib_kern_eth_filter {
+        __u8  dst_mac[6];
+        __u8  src_mac[6];
+        __be16 ether_type;
+        __be16 vlan_tag;
+};
+
+struct ib_kern_spec_eth {
+        __u32  type;
+        __u16  size;
+        __u16  reserved;
+        struct ib_kern_eth_filter val;
+        struct ib_kern_eth_filter mask;
+};
+
+struct ib_kern_ipv4_filter {
+        __be32 src_ip;
+        __be32 dst_ip;
+};
+
+struct ib_kern_spec_ipv4 {
+        __u32  type;
+        __u16  size;
+        __u16  reserved;
+        struct ib_kern_ipv4_filter val;
+        struct ib_kern_ipv4_filter mask;
+};
+
+struct ib_kern_tcp_udp_filter {
+        __be16 dst_port;
+        __be16 src_port;
+};
+
+struct ib_kern_spec_tcp_udp {
+        __u32  type;
+        __u16  size;
+        __u16  reserved;
+        struct ib_kern_tcp_udp_filter val;
+        struct ib_kern_tcp_udp_filter mask;
+};
+
+struct ib_kern_spec {
+        union {
+                struct {
+                        __u32 type;
+                        __u16 size;
+                        __u16 reserved;
+                };
+                struct ib_kern_spec_eth     eth;
+                struct ib_kern_spec_ipv4    ipv4;
+                struct ib_kern_spec_tcp_udp tcp_udp;
+        };
+};
+
+struct ib_kern_flow_attr {
+        __u32 type;
+        __u16 size;
+        __u16 priority;
+        __u8  num_of_specs;
+        __u8  reserved[2];
+        __u8  port;
+        __u32 flags;
+        /* Following are the optional layers according to user request
+         * struct ib_flow_spec_xxx
+         * struct ib_flow_spec_yyy
+         */
+};
+
+struct ib_uverbs_create_flow  {
+        __u32 comp_mask;
+        __u64 response;
+        __u32 qp_handle;
+        struct ib_kern_flow_attr flow_attr;
+};
+
+struct ib_uverbs_create_flow_resp {
+        __u32 comp_mask;
+        __u32 flow_handle;
+};
+
+struct ib_uverbs_destroy_flow  {
+        __u32 comp_mask;
+        __u32 flow_handle;
+};
+
 struct ib_uverbs_create_srq {
         __u64 response;
         __u64 user_handle;