/**
* Initialize loopback
*
* Initialize ODP queues to create our own idea of loopbacks, which allow
* testing without physical interfaces. Interface name string will be of
* the format "loopX" where X is the decimal number of the interface.
*
* @param intf Loopback interface name string
*/
#if 0 /* Temporarely disable loopback mode. Needs packet output event queues */
static
void initialize_loop(char *intf)
{
int idx;
odp_queue_t outq_def;
odp_queue_t inq_def;
char queue_name[ODP_QUEUE_NAME_LEN];
odp_queue_param_t qparam;
uint8_t *mac;
char mac_str[MAX_STRING];
/* Derive loopback interface index */
idx = loop_if_index(intf);
if (idx < 0) {
EXAMPLE_ERR("Error: loopback \"%s\" invalid\n", intf);
exit(EXIT_FAILURE);
}
/* Create input queue */
odp_queue_param_init(&qparam);
qparam.type = ODP_QUEUE_TYPE_SCHED;
qparam.sched.prio = ODP_SCHED_PRIO_DEFAULT;
qparam.sched.sync = ODP_SCHED_SYNC_ATOMIC;
qparam.sched.group = ODP_SCHED_GROUP_ALL;
snprintf(queue_name, sizeof(queue_name), "%i-loop_inq_def", idx);
queue_name[ODP_QUEUE_NAME_LEN - 1] = '\0';
inq_def = queue_create(queue_name, &qparam);
if (ODP_QUEUE_INVALID == inq_def) {
EXAMPLE_ERR("Error: input queue creation failed for %s\n",
intf);
exit(EXIT_FAILURE);
}
/* Create output queue */
snprintf(queue_name, sizeof(queue_name), "%i-loop_outq_def", idx);
queue_name[ODP_QUEUE_NAME_LEN - 1] = '\0';
outq_def = queue_create(queue_name, NULL);
if (ODP_QUEUE_INVALID == outq_def) {
EXAMPLE_ERR("Error: output queue creation failed for %s\n",
intf);
exit(EXIT_FAILURE);
}
/* Initialize the loopback DB entry */
create_loopback_db_entry(idx, inq_def, outq_def, pkt_pool);
mac = query_loopback_db_mac(idx);
printf("Created loop:%02i, queue mode (ATOMIC queues)\n"
" default loop%02i-INPUT queue:%" PRIu64 "\n"
" default loop%02i-OUTPUT queue:%" PRIu64 "\n"
" source mac address %s\n",
idx, idx, odp_queue_to_u64(inq_def), idx,
odp_queue_to_u64(outq_def),
mac_addr_str(mac_str, mac));
/* Resolve any routes using this interface for output */
resolve_fwd_db(intf, outq_def, mac);
}
int create_stream_db_inputs(void)
{
int created = 0;
odp_pool_t pkt_pool;
stream_db_entry_t *stream = NULL;
/* Lookup the packet pool */
pkt_pool = odp_pool_lookup("packet_pool");
if (pkt_pool == ODP_POOL_INVALID) {
EXAMPLE_ERR("Error: pkt_pool not found\n");
exit(EXIT_FAILURE);
}
/* For each stream create corresponding input packets */
for (stream = stream_db->list; NULL != stream; stream = stream->next) {
int count;
uint8_t *dmac = query_loopback_db_mac(stream->input.loop);
odp_queue_t queue = query_loopback_db_inq(stream->input.loop);
for (count = stream->count; count > 0; count--) {
odp_packet_t pkt;
pkt = create_ipv4_packet(stream, dmac, pkt_pool);
if (ODP_PACKET_INVALID == pkt) {
printf("Packet buffers exhausted\n");
break;
}
stream->created++;
if (odp_queue_enq(queue, odp_packet_to_event(pkt))) {
odp_packet_free(pkt);
printf("Queue enqueue failed\n");
break;
}
/* Count this stream when we create first packet */
if (1 == stream->created)
created++;
}
}
return created;
}