do_switch_packets(unsigned vportid, struct rte_mbuf **bufs, int rx_count)
{
int j;
/*
* Initialize array of keys to 0 to avoid overhead of
* loading the full key in to cache at once later.
*/
struct flow_key key[PKT_BURST_SIZE] = {{0}};
/* Prefetch first packets */
for (j = 0; j < PREFETCH_OFFSET && j < rx_count; j++)
rte_prefetch0(rte_pktmbuf_mtod(bufs[j], void *));
/* Prefetch new packets and forward already prefetched packets */
for (j = 0; j < (rx_count - PREFETCH_OFFSET); j++) {
flow_key_extract(bufs[j], vportid, &key[j]);
rte_prefetch0(rte_pktmbuf_mtod(bufs[j + PREFETCH_OFFSET], void *));
switch_packet(bufs[j], &key[j]);
}
/* Forward remaining prefetched packets */
for (; j < rx_count; j++) {
flow_key_extract(bufs[j], vportid, &key[j]);
switch_packet(bufs[j], &key[j]);
}
}
/*
* This function takes a packet and routes it as per the flow table.
*/
static void
switch_packet(struct rte_mbuf *pkt, uint8_t in_port)
{
int pos = 0;
struct dpdk_upcall info = {0};
flow_key_extract(pkt, in_port, &info.key);
pos = rte_hash_lookup(handle, &info.key);
if (pos < 0) {
/* flow table miss, send unmatched packet to the daemon */
info.cmd = PACKET_CMD_MISS;
send_packet_to_vswitchd(pkt, &info);
} else {
flow_table_update_stats(pos, pkt);
action_execute(pos, pkt);
}
}
/*
* This function takes a packet and routes it as per the flow table.
*/
void
switch_packet(struct rte_mbuf *pkt, uint8_t in_port)
{
int ret = 0;
struct dpdk_upcall info = {0};
struct action action = {0};
flow_key_extract(pkt, in_port, &info.key);
ret = flow_table_get_flow(&info.key, &action, NULL);
if (ret >= 0) {
flow_table_update_stats(&info.key, pkt);
action_execute(&action, pkt);
} else {
/* flow table miss, send unmatched packet to the daemon */
info.cmd = PACKET_CMD_MISS;
send_packet_to_vswitchd(pkt, &info);
}
}
