seg_buf
struct seg_buf *seg = pending_req->seg;
struct seg_buf seg[],
struct seg_buf seg[MAX_INDIRECT_SEGMENTS];
struct ib_mad_recv_buf *seg_buf;
list_for_each_entry_reverse(seg_buf, rmpp_list, list) {
cur_seg_num = get_seg_num(seg_buf);
return seg_buf;