app/testpmd: limit port mask bits to configured maximum

The port mask parsing in testpmd allowed up to 64 bits to be processed,
even if RTE_MAX_ETHPORTS is set to a max of 32. Fix this by only
processing up to min(RTE_MAX_ETHPORTS,64) bits of the mask.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 69a83c2637e3fac2fa8fe500786842bbe71b29a6..97b65254226f070c43903c165a28a692805b11a7 100644 (file)
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -1440,7 +1440,7 @@ set_fwd_ports_mask(uint64_t portmask)
                return;
        }
        nb_pt = 0;
-       for (i = 0; i < 64; i++) {
+       for (i = 0; i < (unsigned)RTE_MIN(64, RTE_MAX_ETHPORTS); i++) {
                if (! ((uint64_t)(1ULL << i) & portmask))
                        continue;
                portlist[nb_pt++] = i;