1 files changed, 6 insertions, 24 deletions

diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index fb6cd42601f9..afe70a549c2f 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -177,17 +177,6 @@ static int queue_packet(struct ib_umad_file *file,
         return ret;
 }
 
-static int data_offset(u8 mgmt_class)
-{
-        if (mgmt_class == IB_MGMT_CLASS_SUBN_ADM)
-                return IB_MGMT_SA_HDR;
-        else if ((mgmt_class >= IB_MGMT_CLASS_VENDOR_RANGE2_START) &&
-                 (mgmt_class <= IB_MGMT_CLASS_VENDOR_RANGE2_END))
-                return IB_MGMT_VENDOR_HDR;
-        else
-                return IB_MGMT_RMPP_HDR;
-}
-
 static void send_handler(struct ib_mad_agent *agent,
                          struct ib_mad_send_wc *send_wc)
 {
@@ -283,7 +272,7 @@ static ssize_t copy_recv_mad(char __user *buf, struct ib_umad_packet *packet,
                          */
                         return -ENOSPC;
                 }
-                offset = data_offset(recv_buf->mad->mad_hdr.mgmt_class);
+                offset = ib_get_mad_data_offset(recv_buf->mad->mad_hdr.mgmt_class);
                 max_seg_payload = sizeof (struct ib_mad) - offset;
 
                 for (left = packet->length - seg_payload, buf += seg_payload;
@@ -441,21 +430,14 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
         }
 
         rmpp_mad = (struct ib_rmpp_mad *) packet->mad.data;
-        if (rmpp_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_ADM) {
-                hdr_len = IB_MGMT_SA_HDR;
-                copy_offset = IB_MGMT_RMPP_HDR;
-                rmpp_active = ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) &
-                              IB_MGMT_RMPP_FLAG_ACTIVE;
-        } else if (rmpp_mad->mad_hdr.mgmt_class >= IB_MGMT_CLASS_VENDOR_RANGE2_START &&
-                   rmpp_mad->mad_hdr.mgmt_class <= IB_MGMT_CLASS_VENDOR_RANGE2_END) {
-                hdr_len = IB_MGMT_VENDOR_HDR;
+        hdr_len = ib_get_mad_data_offset(rmpp_mad->mad_hdr.mgmt_class);
+        if (!ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class)) {
+                copy_offset = IB_MGMT_MAD_HDR;
+                rmpp_active = 0;
+        } else {
                 copy_offset = IB_MGMT_RMPP_HDR;
                 rmpp_active = ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) &
                               IB_MGMT_RMPP_FLAG_ACTIVE;
-        } else {
-                hdr_len = IB_MGMT_MAD_HDR;
-                copy_offset = IB_MGMT_MAD_HDR;
-                rmpp_active = 0;
         }
 
         data_len = count - sizeof (struct ib_user_mad) - hdr_len;