RDMA/ucma: Allow user space to bind to AF_IB

Support user space binding to addresses using AF_IB.  Since
sockaddr_ib is larger than sockaddr_in6, we need to define a larger
structure when binding using AF_IB.  This time we use sockaddr_storage
to cover future cases.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/include/uapi/rdma/rdma_user_cm.h b/include/uapi/rdma/rdma_user_cm.h
index 79f68f7c9fd2..895a427bfc91 100644
--- a/include/uapi/rdma/rdma_user_cm.h
+++ b/include/uapi/rdma/rdma_user_cm.h
@@ -62,7 +62,8 @@ enum {
         RDMA_USER_CM_CMD_JOIN_IP_MCAST,
         RDMA_USER_CM_CMD_LEAVE_MCAST,
         RDMA_USER_CM_CMD_MIGRATE_ID,
-        RDMA_USER_CM_CMD_QUERY
+        RDMA_USER_CM_CMD_QUERY,
+        RDMA_USER_CM_CMD_BIND
 };
 
 /*
@@ -102,6 +103,13 @@ struct rdma_ucm_bind_ip {
         __u32 id;
 };
 
+struct rdma_ucm_bind {
+        __u32 id;
+        __u16 addr_size;
+        __u16 reserved;
+        struct sockaddr_storage addr;
+};
+
 struct rdma_ucm_resolve_ip {
         struct sockaddr_in6 src_addr;
         struct sockaddr_in6 dst_addr;