user_wr->wr.atomic.compare_add;
next->wr.atomic.swap = user_wr->wr.atomic.swap;
next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
user_wr->wr.atomic.compare_add;
next->wr.atomic.swap = user_wr->wr.atomic.swap;
next->wr.atomic.rkey = user_wr->wr.atomic.rkey;