#define MBUF_CACHE_SIZE 250
#define BURST_SIZE 32
+/* Configuration of ethernet ports. 8< */
static const struct rte_eth_conf port_conf_default = {
.rxmode = {
.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
},
};
+/* >8 End of configuration of ethernet ports. */
/* basicfwd.c: Basic DPDK skeleton forwarding example. */
* Initializes a given port using global settings and with the RX buffers
* coming from the mbuf_pool passed as a parameter.
*/
+
+/* Main functional part of port initialization. 8< */
static inline int
port_init(uint16_t port, struct rte_mempool *mbuf_pool)
{
return retval;
}
- /* Start the Ethernet port. */
+ /* Starting Ethernet port. 8< */
retval = rte_eth_dev_start(port);
+ /* >8 End of starting of ethernet port. */
if (retval < 0)
return retval;
printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8
" %02" PRIx8 " %02" PRIx8 " %02" PRIx8 "\n",
- port,
- addr.addr_bytes[0], addr.addr_bytes[1],
- addr.addr_bytes[2], addr.addr_bytes[3],
- addr.addr_bytes[4], addr.addr_bytes[5]);
+ port, RTE_ETHER_ADDR_BYTES(&addr));
/* Enable RX in promiscuous mode for the Ethernet device. */
retval = rte_eth_promiscuous_enable(port);
+ /* End of setting RX port in promiscuous mode. */
if (retval != 0)
return retval;
return 0;
}
+/* >8 End of main functional part of port initialization. */
/*
* The lcore main. This is the main thread that does the work, reading from
* an input port and writing to an output port.
*/
+
+ /* Basic forwarding application lcore. 8< */
static __rte_noreturn void
lcore_main(void)
{
* for best performance.
*/
RTE_ETH_FOREACH_DEV(port)
- if (rte_eth_dev_socket_id(port) > 0 &&
+ if (rte_eth_dev_socket_id(port) >= 0 &&
rte_eth_dev_socket_id(port) !=
(int)rte_socket_id())
printf("WARNING, port %u is on remote NUMA node to "
printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n",
rte_lcore_id());
- /* Run until the application is quit or killed. */
+ /* Main work of application loop. 8< */
for (;;) {
/*
* Receive packets on a port and forward them on the paired
}
}
}
+ /* >8 End of loop. */
}
+/* >8 End Basic forwarding application lcore. */
/*
* The main function, which does initialization and calls the per-lcore
unsigned nb_ports;
uint16_t portid;
- /* Initialize the Environment Abstraction Layer (EAL). */
+ /* Initializion the Environment Abstraction Layer (EAL). 8< */
int ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
+ /* >8 End of initializion the Environment Abstraction Layer (EAL). */
argc -= ret;
argv += ret;
rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
/* Creates a new mempool in memory to hold the mbufs. */
+
+ /* Allocates mempool to hold the mbufs. 8< */
mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+ /* >8 End of allocating mempool to hold mbuf. */
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
- /* Initialize all ports. */
+ /* Initializing all ports. 8< */
RTE_ETH_FOREACH_DEV(portid)
if (port_init(portid, mbuf_pool) != 0)
rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu16 "\n",
portid);
+ /* >8 End of initializing all ports. */
if (rte_lcore_count() > 1)
printf("\nWARNING: Too many lcores enabled. Only 1 used.\n");
- /* Call lcore_main on the main core only. */
+ /* Call lcore_main on the main core only. Called on single lcore. 8< */
lcore_main();
+ /* >8 End of called on single lcore. */
/* clean up the EAL */
rte_eal_cleanup();