/* not a policy according to specs */
static int rcv_nack_ctl(struct dtcp * dtcp,
struct pdu * pdu)
{
struct rtxq * q;
struct dtcp_ps * ps;
seq_num_t seq_num;
struct pci * pci;
pci = pdu_pci_get_rw(pdu);
seq_num = pci_control_ack_seq_num(pci);
rcu_read_lock();
ps = container_of(rcu_dereference(dtcp->base.ps),
struct dtcp_ps, base);
if (ps->rtx_ctrl) {
q = dt_rtxq(dtcp->parent);
if (!q) {
rcu_read_unlock();
LOG_ERR("Couldn't find the Retransmission queue");
return -1;
}
rtxq_nack(q, seq_num, dt_sv_tr(dtcp->parent));
if (ps->rtt_estimator)
ps->rtt_estimator(ps, pci_control_ack_seq_num(pci));
}
rcu_read_unlock();
LOG_DBG("DTCP received NACK (CPU: %d)", smp_processor_id());
dump_we(dtcp, pci);
pdu_destroy(pdu);
return 0;
}
static int
default_sender_inactivity_timer(struct dtp_ps * ps)
{
struct dtp * dtp = ps->dm;
struct dt * dt;
struct dtcp * dtcp;
struct dtcp_ps * dtcp_ps;
struct dtcp_config * cfg;
seq_num_t max_sent, snd_rt_win, init_credit, next_send;
LOG_DBG("default_sender_inactivity launched");
if (!dtp) return 0;
dt = dtp_dt(dtp);
if (!dt)
return -1;
dtcp = dt_dtcp(dt);
if (!dtp)
return -1;
dt_sv_drf_flag_set(dt, true);
dtp_initial_sequence_number(dtp);
cfg = dtcp_config_get(dtcp);
if (!cfg)
return -1;
rcu_read_lock();
dtcp_ps = dtcp_ps_get(dtcp);
if (dtcp_ps->rtx_ctrl) {
struct rtxq * q;
q = dt_rtxq(dt);
if (!q) {
rcu_read_unlock();
LOG_ERR("Couldn't find the Retransmission queue");
return -1;
}
rtxq_flush(q);
}
if (dtcp_ps->flow_ctrl) {
struct cwq * cwq;
cwq = dt_cwq(dt);
ASSERT(cwq);
if (cwq_flush(cwq)) {
rcu_read_unlock();
LOG_ERR("Coudln't flush cwq");
return -1;
}
dt_sv_window_closed_set(dt, false);
}
rcu_read_unlock();
init_credit = dtcp_initial_credit(cfg);
max_sent = dtp_sv_max_seq_nr_sent(dtp);
snd_rt_win = dtcp_snd_rt_win(dtcp);
next_send = dtp_sv_last_nxt_seq_nr(dtp);
LOG_DBG("Current values:\n\tinit_credit: %u "
"max_sent: %u snd_rt_win: %u next_send: %u",
init_credit, max_sent, snd_rt_win, next_send);
dtcp_snd_rt_win_set(dtcp, next_send + init_credit);
LOG_DBG("Resulting snd_rt_win_edge: %u", dtcp_snd_rt_win(dtcp));
/*FIXME: Missing sending the control ack pdu */
return 0;
}
