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ethdev: fix port lookup if none

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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: 9c5b8d8b9f ("ethdev: clean port id retrieval when attaching")

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>
This commit is contained in:
Anatoly Burakov 2016-11-19 13:10:11 +00:00 committed by Thomas Monjalon
parent 51c0c01b70
commit f9ae888b1e
1 changed files with 3 additions and 0 deletions
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lib/librte_ether/rte_ethdev.c
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@ -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++) {