.. code-block:: console
- ./build/link_status_interrupt [EAL options] -- -p PORTMASK [-q NQ][-T PERIOD]
+ ./<build_dir>/examples/dpdk-link_status_interrupt [EAL options] -- -p PORTMASK [-q NQ][-T PERIOD]
where,
* -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default)
-To run the application in a linuxapp environment with 4 lcores, 4 memory channels, 16 ports and 8 RX queues per lcore,
+To run the application in a linux environment with 4 lcores, 4 memory channels, 16 ports and 8 RX queues per lcore,
issue the command:
.. code-block:: console
- $ ./build/link_status_interrupt -l 0-3 -n 4-- -q 8 -p ffff
+ $ ./<build_dir>/examples/dpdk-link_status_interrupt -l 0-3 -n 4-- -q 8 -p ffff
Refer to the *DPDK Getting Started Guide* for general information on running applications
and the Environment Abstraction Layer (EAL) options.
.. code-block:: c
- if (rte_pci_probe() < 0)
- rte_exit(EXIT_FAILURE, "Cannot probe PCI\n");
-
/*
* Each logical core is assigned a dedicated TX queue on each port.
*/
rte_eth_dev_info_get((uint8_t) portid, &dev_info);
}
-Observe that:
-
-* rte_pci_probe() parses the devices on the PCI bus and initializes recognized devices.
-
The next step is to configure the RX and TX queues.
For each port, there is only one RX queue (only one lcore is able to poll a given port).
The number of TX queues depends on the number of available lcores.
lsi_event_callback(uint16_t port_id, enum rte_eth_event_type type, void *param)
{
struct rte_eth_link link;
+ int ret;
+ char link_status[RTE_ETH_LINK_MAX_STR_LEN];
RTE_SET_USED(param);
printf("Event type: %s\n", type == RTE_ETH_EVENT_INTR_LSC ? "LSC interrupt" : "unknown event");
- rte_eth_link_get_nowait(port_id, &link);
-
- if (link.link_status) {
- printf("Port %d Link Up - speed %u Mbps - %s\n\n", port_id, (unsigned)link.link_speed,
- (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? ("full-duplex") : ("half-duplex"));
- } else
- printf("Port %d Link Down\n\n", port_id);
+ ret = rte_eth_link_get_nowait(port_id, &link);
+ if (ret < 0) {
+ printf("Failed to get port %d link status: %s\n\n",
+ port_id, rte_strerror(-ret));
+ } else {
+ rte_eth_link_to_str(link_status, sizeof(link_status), &link);
+ printf("Port %d %s\n", port_id, link_status);
+ }
}
This function is called when a link status interrupt is present for the right port.
static void
lsi_simple_forward(struct rte_mbuf *m, unsigned portid)
{
- struct ether_hdr *eth;
+ struct rte_ether_hdr *eth;
void *tmp;
unsigned dst_port = lsi_dst_ports[portid];
- eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
+ eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
/* 02:00:00:00:00:xx */
*((uint64_t *)tmp) = 0x000000000002 + (dst_port << 40);
/* src addr */
- ether_addr_copy(&lsi_ports_eth_addr[dst_port], ð->s_addr);
+ rte_ether_addr_copy(&lsi_ports_eth_addr[dst_port], ð->s_addr);
lsi_send_packet(m, dst_port);
}
/* if timer has reached its timeout */
if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
- /* do this only on master core */
-
- if (lcore_id == rte_get_master_lcore()) {
+ /* do this only on main core */
+ if (lcore_id == rte_get_main_lcore()) {
print_stats();
/* reset the timer */