i40e: fix build with gcc 5.1

On Fedora 22, with GCC 5.1, errors are reported due to array accesses
being potentially out of bounds. This commit fixes this by adding in an
extra bounds check to the loop counter.

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

diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
index e688b4f51ec6132eb6d29b59bb71fb6738154396..4bf98d0f998e7073874d343d4ed4d4570501bdea 100644 (file)
--- a/drivers/net/i40e/i40e_fdir.c
+++ b/drivers/net/i40e/i40e_fdir.c
@@ -551,7 +551,7 @@ i40e_set_flx_pld_cfg(struct i40e_pf *pf,
        memset(flex_pit, 0, sizeof(flex_pit));
        num = i40e_srcoff_to_flx_pit(cfg->src_offset, flex_pit);
 
-       for (i = 0; i < num; i++) {
+       for (i = 0; i < RTE_MIN(num, RTE_DIM(flex_pit)); i++) {
                field_idx = layer_idx * I40E_MAX_FLXPLD_FIED + i;
                /* record the info in fdir structure */
                pf->fdir.flex_set[field_idx].src_offset =