[dpdk-dev] [PATCH 15/18] examples/link_status_interrupt: check status of getting link
Andrew Rybchenko
arybchenko at solarflare.com
Tue Sep 10 10:25:55 CEST 2019
From: Igor Romanov <igor.romanov at oktetlabs.ru>
The return value of rte_eth_link_get() and rte_eth_link_get_nowait()
was changed from void to int. Update the usage of the functions
according to the new return type.
Signed-off-by: Igor Romanov <igor.romanov at oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
examples/link_status_interrupt/main.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/examples/link_status_interrupt/main.c b/examples/link_status_interrupt/main.c
index d42fef12b..a0b75d9f6 100644
--- a/examples/link_status_interrupt/main.c
+++ b/examples/link_status_interrupt/main.c
@@ -117,6 +117,7 @@ print_stats(void)
const char clr[] = { 27, '[', '2', 'J', '\0' };
const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
+ int link_get_err;
/* Clear screen and move to top left */
printf("%s%s", clr, topLeft);
@@ -129,7 +130,7 @@ print_stats(void)
continue;
memset(&link, 0, sizeof(link));
- rte_eth_link_get_nowait(portid, &link);
+ link_get_err = rte_eth_link_get_nowait(portid, &link);
printf("\nStatistics for port %u ------------------------------"
"\nLink status: %25s"
"\nLink speed: %26u"
@@ -138,8 +139,11 @@ print_stats(void)
"\nPackets received: %20"PRIu64
"\nPackets dropped: %21"PRIu64,
portid,
+ link_get_err < 0 ? "Link get failed" :
(link.link_status ? "Link up" : "Link down"),
- (unsigned)link.link_speed,
+ link_get_err < 0 ? 0 :
+ (unsigned int)link.link_speed,
+ link_get_err < 0 ? "Link get failed" :
(link.link_duplex == ETH_LINK_FULL_DUPLEX ? \
"full-duplex" : "half-duplex"),
port_statistics[portid].tx,
@@ -438,13 +442,19 @@ lsi_event_callback(uint16_t port_id, enum rte_eth_event_type type, void *param,
void *ret_param)
{
struct rte_eth_link link;
+ int ret;
RTE_SET_USED(param);
RTE_SET_USED(ret_param);
printf("\n\nIn registered callback...\n");
printf("Event type: %s\n", type == RTE_ETH_EVENT_INTR_LSC ? "LSC interrupt" : "unknown event");
- rte_eth_link_get_nowait(port_id, &link);
+ ret = rte_eth_link_get_nowait(port_id, &link);
+ if (ret < 0) {
+ printf("Failed link get on port %d: %s\n",
+ port_id, rte_strerror(-ret));
+ return ret;
+ }
if (link.link_status) {
printf("Port %d Link Up - speed %u Mbps - %s\n\n",
port_id, (unsigned)link.link_speed,
--
2.17.1
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