[dpdk-dev] [PATCH] ethdev: don't look for devices if none were found
Anatoly Burakov
anatoly.burakov at intel.com
Sat Nov 19 14:10:11 CET 2016
Aside from avoiding doing useless work, this also fixes a segfault
when calling rte_eth_dev_get_port_by_name() whenever no devices
were found yet, and therefore rte_eth_dev_data wasn't yet allocated.
Fixes: 9c5b8d8b9feb ("ethdev: clean port id retrieval when attaching")
Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
---
lib/librte_ether/rte_ethdev.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index fde8112..76a6dbf 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -376,6 +376,9 @@ rte_eth_dev_get_port_by_name(const char *name, uint8_t *port_id)
return -EINVAL;
}
+ if (!nb_ports)
+ return -ENODEV;
+
*port_id = RTE_MAX_ETHPORTS;
for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
--
2.5.5
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