/*
* B_input(packet),where packet is a structure of type pkt. This routine
* will be called whenever a packet sent from the A-side (i.e., as a result
* of a tolayer3() being done by a A-side procedure) arrives at the B-side.
* packet is the (possibly corrupted) packet sent from the A-side.
*/
void B_input(struct pkt packet) {
struct msg message; // Store message retrived from network
struct pkt ack; // Store ack packet
// Pass message to layer 5 when it not corrupted and when it has expected seqnum
if (not_corrupted(packet) && (packet.seqnum == rev_seqnum)) {
strncpy(message.data, packet.payload, MESSAGE_LENGTH);
tolayer5(BEntity, message);
// Make ack message
ack = prepare_pkt(1, rev_seqnum, NULL);
// flip expected sequence number of packet
rev_seqnum = !rev_seqnum;
} else {
// Make ack message
ack = prepare_pkt(1, !rev_seqnum, NULL);
}
// Send ack message
tolayer3(BEntity, ack);
}
/**
* test main entrance for library sched
*/
static int
test_sched(void)
{
struct rte_mempool *mp = NULL;
struct rte_sched_port *port = NULL;
uint32_t pipe;
struct rte_mbuf *in_mbufs[10];
struct rte_mbuf *out_mbufs[10];
int i;
int err;
mp = create_mempool();
port_param.socket = 0;
port_param.rate = (uint64_t) 10000 * 1000 * 1000 / 8;
port = rte_sched_port_config(&port_param);
VERIFY(port != NULL, "Error config sched port\n");
err = rte_sched_subport_config(port, SUBPORT, subport_param);
VERIFY(err == 0, "Error config sched, err=%d\n", err);
for (pipe = 0; pipe < port_param.n_pipes_per_subport; pipe ++) {
err = rte_sched_pipe_config(port, SUBPORT, pipe, 0);
VERIFY(err == 0, "Error config sched pipe %u, err=%d\n", pipe, err);
}
for (i = 0; i < 10; i++) {
in_mbufs[i] = rte_pktmbuf_alloc(mp);
prepare_pkt(in_mbufs[i]);
}
err = rte_sched_port_enqueue(port, in_mbufs, 10);
VERIFY(err == 10, "Wrong enqueue, err=%d\n", err);
err = rte_sched_port_dequeue(port, out_mbufs, 10);
VERIFY(err == 10, "Wrong dequeue, err=%d\n", err);
for (i = 0; i < 10; i++) {
enum rte_meter_color color;
uint32_t subport, traffic_class, queue;
color = rte_sched_port_pkt_read_color(out_mbufs[i]);
VERIFY(color == e_RTE_METER_YELLOW, "Wrong color\n");
rte_sched_port_pkt_read_tree_path(out_mbufs[i],
&subport, &pipe, &traffic_class, &queue);
VERIFY(subport == SUBPORT, "Wrong subport\n");
VERIFY(pipe == PIPE, "Wrong pipe\n");
VERIFY(traffic_class == TC, "Wrong traffic_class\n");
VERIFY(queue == QUEUE, "Wrong queue\n");
}
struct rte_sched_subport_stats subport_stats;
uint32_t tc_ov;
rte_sched_subport_read_stats(port, SUBPORT, &subport_stats, &tc_ov);
//VERIFY(subport_stats.n_pkts_tc[TC-1] == 10, "Wrong subport stats\n");
struct rte_sched_queue_stats queue_stats;
uint16_t qlen;
rte_sched_queue_read_stats(port, QUEUE, &queue_stats, &qlen);
//VERIFY(queue_stats.n_pkts == 10, "Wrong queue stats\n");
rte_sched_port_free(port);
return 0;
}
