net/tap: fix memcpy with incorrect size

Fix incorrect sizeof operation being used for getting mac addr size.

Found while compiling with arm64 clang.
drivers/net/tap/rte_eth_tap.c:1410:40: error: argument to 'sizeof' in
    'memcpy' call is the same pointer type 'struct ether_addr *' as the
    destination; expected 'struct ether_addr' or an explicit length
    [-Werror,-Wsizeof-pointer-memaccess]
       rte_memcpy(&pmd->eth_addr, mac_addr, sizeof(mac_addr));
                  ~~~~~~~~~~~~~~            ^~~~~~~~~~~~~~~~

Fixes: bcab6c1d27fa ("net/tap: allow user MAC to be passed as args")

Signed-off-by: Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>
Acked-by: Zhiyong Yang <zhiyong.yang@intel.com>

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index ed6d738..0a1b4cc 100644 (file)
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -1407,7 +1407,7 @@ eth_dev_tap_create(struct rte_vdev_device *vdev, char *tap_name,
        if (is_zero_ether_addr(mac_addr))
                eth_random_addr((uint8_t *)&pmd->eth_addr);
        else
-               rte_memcpy(&pmd->eth_addr, mac_addr, sizeof(mac_addr));
+               rte_memcpy(&pmd->eth_addr, mac_addr, sizeof(*mac_addr));
 
        /* Immediately create the netdevice (this will create the 1st queue). */
        /* rx queue */