ack_recv
ack_recv(rmpp_recv, rmpp_recv->rmpp_wc);
ack_recv(rmpp_recv, mad_recv_wc);
ack_recv(rmpp_recv, mad_recv_wc);
ack_recv(rmpp_recv, mad_recv_wc);
if (ack > opt->ack_recv)
opt->ack_recv = ack;
if (WRAPPED(ack, opt->ack_recv))
opt->ack_recv = ack;
opt->ack_recv = 0; opt->ack_sent = 0xffffffff;
u32 ack_sent, ack_recv;
u64 ack_recv;
if (state.ack_recv_valid && state.ack_recv > ic->i_ack_recv) {
rds_send_drop_acked(conn, state.ack_recv, NULL);
ic->i_ack_recv = state.ack_recv;
state->ack_recv = be64_to_cpu(ihdr->h_ack);