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#include <rte_config.h>
#include <rte_memory.h>
#include <rte_malloc.h>
#include <rte_memzone.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_ethdev.h>
#include <rte_log.h>
#include <rte_errno.h>
#include <rte_distributor.h>
#include <rte_debug.h>
#include "init.h"
#include "kni_dev.h"
#include "event.h"
#include "log.h"
#define BURST_SIZE 32
#define MBUF_DROP 255
static struct rte_distributor *d;
static int term;
static int port_cnt;
struct xmit_buf {
struct rte_mbuf *bufs[BURST_SIZE];
int cnt;
};
int distributor_init(int ded)
{
d = rte_distributor_create("distributor", rte_socket_id(), rte_lcore_count() - ded);
return d == NULL;
}
static void flush_port(int port, struct xmit_buf *xb)
{
int nb;
if (likely(port < port_cnt))
nb = rte_eth_tx_burst(port, 0, xb->bufs, xb->cnt);
else
nb = kni_dev_tx_burst(port - port_cnt, 0, xb->bufs, xb->cnt);
if (unlikely(nb < xb->cnt)) {
do {
rte_pktmbuf_free(xb->bufs[nb]);
} while (++nb < xb->cnt);
}
}
static void distributor_tx(struct rte_mbuf **bufs, int nb, struct xmit_buf *xmit_bufs)
{
struct rte_mbuf *mb;
int i, p;
_mm_prefetch(bufs[0], 0);
_mm_prefetch(bufs[1], 0);
_mm_prefetch(bufs[2], 0);
for (i = 0; i < nb; i++) {
_mm_prefetch(bufs[i + 3], 0);
mb = bufs[i];
p = mb->port;
if (likely(p != MBUF_DROP)) {
struct xmit_buf *xb = &xmit_bufs[p];
xb->bufs[xb->cnt++] = mb;
if (xb->cnt == BURST_SIZE)
flush_port(p, xb);
} else
rte_pktmbuf_free(mb);
}
}
void distributor_loop(int chk_event)
{
int kni_port_cnt = kni_dev_count();
struct rte_mbuf *bufs[BURST_SIZE*2];
int port, nb, i;
struct xmit_buf *xmit_bufs;
int tot_port_cnt;
struct xmit_buf *xb;
port_cnt = rte_eth_dev_count();
tot_port_cnt = port_cnt + kni_port_cnt;
xmit_bufs = rte_malloc(NULL, (tot_port_cnt * sizeof(struct xmit_buf)), 0);
for (i = 0; i < tot_port_cnt; i++)
xmit_bufs[i].cnt = 0;
while (!term) {
for (port = 0; port < port_cnt; port++) {
nb = rte_eth_rx_burst(port, 0, bufs, BURST_SIZE);
if (likely(nb))
rte_distributor_process(d, bufs, nb);
nb = rte_distributor_returned_pkts(d, bufs, BURST_SIZE*2);
if (likely(nb))
distributor_tx(bufs, nb, xmit_bufs);
}
for (port = 0; port < kni_port_cnt; port++) {
nb = kni_dev_rx_burst(port, 0, bufs, BURST_SIZE);
if (likely(nb))
rte_distributor_process(d, bufs, nb);
nb = rte_distributor_returned_pkts(d, bufs, BURST_SIZE*2);
if (likely(nb))
distributor_tx(bufs, nb, xmit_bufs);
}
_mm_prefetch(&xmit_bufs[0], 0);
_mm_prefetch(&xmit_bufs[1], 0);
_mm_prefetch(&xmit_bufs[2], 0);
for (i = 0; i < tot_port_cnt; i++) {
_mm_prefetch(&xmit_bufs[i + 3], 0);
xb = &xmit_bufs[i];
if (likely(xb->cnt))
flush_port(i, xb);
}
if (chk_event)
event_process(0);
}
}
int lcore_worker(void *a)
{
struct rte_mbuf *mb = NULL;
while (!term) {
mb = rte_distributor_get_pkt(d, 0, mb);
mb->port = MBUF_DROP;
}
return 0;
}
int lcore_distributor(void *a)
{
distributor_loop(0);
return 0;
}
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