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examples/l2fwd: check if user portmask is valid

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User can pass portmask with any value, even invalid mask. The code
checks against actual portmask.

Signed-off-by: Vipin Varghese <vipin.varghese@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
This commit is contained in:
Vipin Varghese 2018-02-02 00:28:42 +05:30 committed by Thomas Monjalon
parent dd21615819
commit 6726521997
1 changed files with 5 additions and 0 deletions
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5
examples/l2fwd/main.c
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@ -549,6 +549,11 @@ main(int argc, char **argv)
if (nb_ports == 0)
rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
/* check port mask to possible port mask */
if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n",
(1 << nb_ports) - 1);
/* reset l2fwd_dst_ports */
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
l2fwd_dst_ports[portid] = 0;