diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 82f5a9aba5780be69a5d7483d7f49b84e32dccd7..9e09dd897b749d957d8843f36920d1d99610cf06 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -4108,6 +4108,12 @@ const char *netdev_drivername(const struct net_device *dev); void linkwatch_run_queue(void); +static inline void netdev_features_size_check(void) +{ + BUILD_BUG_ON(sizeof(netdev_features_t) * BITS_PER_BYTE < + NETDEV_FEATURE_COUNT); +} + static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, netdev_features_t f2) { diff --git a/net/core/dev.c b/net/core/dev.c index 25ceecfdd8fe11afacb9c735471c6aa45ad47e0d..e01c21a88cae04112a915684ddd3925791bc3161 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -7879,6 +7879,7 @@ int register_netdevice(struct net_device *dev) int ret; struct net *net = dev_net(dev); + netdev_features_size_check(); BUG_ON(dev_boot_phase); ASSERT_RTNL();