/**
* Interface to dequeue mbufs from tx_q and burst tx
*/
static void
kni_kni_to_eth(struct kni_port_params *p)
{
uint8_t i, port_id;
unsigned nb_tx, num;
uint32_t nb_kni;
struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
if (p == NULL)
return;
port_id = p->port_id;
/* Burst rx from kni */
num = rte_kni_rx_burst(p->kni, pkts_burst, PKT_BURST_SZ);
if (unlikely(num > PKT_BURST_SZ)) {
RTE_LOG(ERR, APP, "Error receiving from KNI\n");
return;
}
/* Burst tx to eth */
nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num);
// kni_stats[port_id].tx_packets += nb_tx;
if (unlikely(nb_tx < num)) {
/* Free mbufs not tx to NIC */
kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
// kni_stats[port_id].tx_dropped += num - nb_tx;
}
return;
}
/**
* Interface to dequeue mbufs from tx_q and burst tx
*/
static void
kni_egress(struct kni_port_params* p, uint32_t lcore_id)
{
uint8_t i, port_id;
unsigned nb_tx, num;
uint32_t nb_kni;
struct rte_mbuf* pkts_burst[MAX_PKT_BURST];
uint16_t queue_num;
if (p == NULL)
return;
nb_kni = p->nb_kni;
port_id = p->port_id;
queue_num = p->tx_queue_id;
for (i = 0; i < nb_kni; i++) {
/* Burst rx from kni */
num = rte_kni_rx_burst(p->kni[i], pkts_burst, MAX_PKT_BURST);
if (unlikely(num > MAX_PKT_BURST)) {
RTE_LOG(ERR, KNI, "Error receiving from KNI\n");
return;
}
/* Burst tx to eth */
nb_tx = rte_eth_tx_burst(port_id, queue_num, pkts_burst,
(uint16_t)num);
rte_kni_handle_request(p->kni[i]);
stats[lcore_id].nb_kni_rx += num;
stats[lcore_id].nb_tx += nb_tx;
if (unlikely(nb_tx < num)) {
/* Free mbufs not tx to NIC */
kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
stats[lcore_id].nb_kni_dropped += num - nb_tx;
}
}
}
static void
kni_ring_to_kni(struct kni_port_params *p)
{
uint8_t i, port_id;
unsigned nb_rx, num;
struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
if (p == NULL)
return;
port_id = p->port_id;
/* Burst rx from ring */
nb_rx = rte_ring_dequeue_burst(p->ring,(void **)&pkts_burst, PKT_BURST_SZ);
if (unlikely(nb_rx > PKT_BURST_SZ)) {
RTE_LOG(ERR, APP, "Error receiving from eth\n");
return;
}
/* Burst tx to kni */
num = rte_kni_tx_burst(p->kni, pkts_burst, nb_rx);
//kni_stats[port_id].rx_packets += num;
rte_kni_handle_request(p->kni);
if (unlikely(num < nb_rx)) {
/* Free mbufs not tx to kni interface */
kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num);
//kni_stats[port_id].rx_dropped += nb_rx - num;
}
return;
}
