static inline void flush_one_port(struct output_buffer *outbuf, uint8_t outp) {
unsigned nb_tx = rte_eth_tx_burst(outp, 0, outbuf->mbufs, outbuf->count);
if (unlikely(nb_tx < outbuf->count)) {
pktmbuf_free_bulk(&outbuf->mbufs[nb_tx], outbuf->count - nb_tx);
}
outbuf->count = 0;
}
static inline void
flush_one_port(struct output_buffer *outbuf, uint8_t outp)
{
unsigned nb_tx = rte_eth_tx_burst(outp, 0, outbuf->mbufs,
outbuf->count);
app_stats.tx.ro_tx_pkts += nb_tx;
if (unlikely(nb_tx < outbuf->count)) {
/* free the mbufs which failed from transmit */
app_stats.tx.ro_tx_failed_pkts += (outbuf->count - nb_tx);
LOG_DEBUG(REORDERAPP, "%s:Packet loss with tx_burst\n", __func__);
pktmbuf_free_bulk(&outbuf->mbufs[nb_tx], outbuf->count - nb_tx);
}
outbuf->count = 0;
}
/**
* This thread receives mbufs from the port and affects them an internal
* sequence number to keep track of their order of arrival through an
* mbuf structure.
* The mbufs are then passed to the worker threads via the rx_to_workers
* ring.
*/
static int
rx_thread(struct rte_ring *ring_out)
{
const uint8_t nb_ports = rte_eth_dev_count();
uint32_t seqn = 0;
uint16_t i, ret = 0;
uint16_t nb_rx_pkts;
uint8_t port_id;
struct rte_mbuf *pkts[MAX_PKTS_BURST];
RTE_LOG(INFO, REORDERAPP, "%s() started on lcore %u\n", __func__,
rte_lcore_id());
while (!quit_signal) {
for (port_id = 0; port_id < nb_ports; port_id++) {
if ((portmask & (1 << port_id)) != 0) {
/* receive packets */
nb_rx_pkts = rte_eth_rx_burst(port_id, 0,
pkts, MAX_PKTS_BURST);
if (nb_rx_pkts == 0) {
LOG_DEBUG(REORDERAPP,
"%s():Received zero packets\n", __func__);
continue;
}
app_stats.rx.rx_pkts += nb_rx_pkts;
/* mark sequence number */
for (i = 0; i < nb_rx_pkts; )
pkts[i++]->seqn = seqn++;
/* enqueue to rx_to_workers ring */
ret = rte_ring_enqueue_burst(ring_out, (void *) pkts,
nb_rx_pkts);
app_stats.rx.enqueue_pkts += ret;
if (unlikely(ret < nb_rx_pkts)) {
app_stats.rx.enqueue_failed_pkts +=
(nb_rx_pkts-ret);
pktmbuf_free_bulk(&pkts[ret], nb_rx_pkts - ret);
}
}
}
}
return 0;
}
/**
* This thread takes bursts of packets from the rx_to_workers ring and
* Changes the input port value to output port value. And feds it to
* workers_to_tx
*/
static int
worker_thread(void *args_ptr)
{
const uint8_t nb_ports = rte_eth_dev_count();
uint16_t i, ret = 0;
uint16_t burst_size = 0;
struct worker_thread_args *args;
struct rte_mbuf *burst_buffer[MAX_PKTS_BURST] = { NULL };
struct rte_ring *ring_in, *ring_out;
const unsigned xor_val = (nb_ports > 1);
args = (struct worker_thread_args *) args_ptr;
ring_in = args->ring_in;
ring_out = args->ring_out;
RTE_LOG(INFO, REORDERAPP, "%s() started on lcore %u\n", __func__,
rte_lcore_id());
while (!quit_signal) {
/* dequeue the mbufs from rx_to_workers ring */
burst_size = rte_ring_dequeue_burst(ring_in,
(void *)burst_buffer, MAX_PKTS_BURST);
if (unlikely(burst_size == 0))
continue;
__sync_fetch_and_add(&app_stats.wkr.dequeue_pkts, burst_size);
/* just do some operation on mbuf */
for (i = 0; i < burst_size;)
burst_buffer[i++]->port ^= xor_val;
/* enqueue the modified mbufs to workers_to_tx ring */
ret = rte_ring_enqueue_burst(ring_out, (void *)burst_buffer, burst_size);
__sync_fetch_and_add(&app_stats.wkr.enqueue_pkts, ret);
if (unlikely(ret < burst_size)) {
/* Return the mbufs to their respective pool, dropping packets */
__sync_fetch_and_add(&app_stats.wkr.enqueue_failed_pkts,
(int)burst_size - ret);
pktmbuf_free_bulk(&burst_buffer[ret], burst_size - ret);
}
}
return 0;
}
