net/core: relax BUILD_BUG_ON in netdev_stats_to_stats64

	}

	}

}

}

/* Convert net_device_stats to rtnl_link_stats64.  They have the same

/* Convert net_device_stats to rtnl_link_stats64. rtnl_link_stats64 has

 * fields in the same order, with only the type differing.

 * all the same fields in the same order as net_device_stats, with only

 * the type differing, but rtnl_link_stats64 may have additional fields

 * at the end for newer counters.

 */

 */

void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,

void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,

			     const struct net_device_stats *netdev_stats)

			     const struct net_device_stats *netdev_stats)

{

{

#if BITS_PER_LONG == 64

#if BITS_PER_LONG == 64

	BUILD_BUG_ON(sizeof(*stats64) != sizeof(*netdev_stats));

	BUILD_BUG_ON(sizeof(*stats64) < sizeof(*netdev_stats));

	memcpy(stats64, netdev_stats, sizeof(*stats64));

	memcpy(stats64, netdev_stats, sizeof(*stats64));

	/* zero out counters that only exist in rtnl_link_stats64 */

	memset((char *)stats64 + sizeof(*netdev_stats), 0,

	       sizeof(*stats64) - sizeof(*netdev_stats));

#else

#else

	size_t i, n = sizeof(*stats64) / sizeof(u64);

	size_t i, n = sizeof(*netdev_stats) / sizeof(unsigned long);

	const unsigned long *src = (const unsigned long *)netdev_stats;

	const unsigned long *src = (const unsigned long *)netdev_stats;

	u64 *dst = (u64 *)stats64;

	u64 *dst = (u64 *)stats64;

	BUILD_BUG_ON(sizeof(*netdev_stats) / sizeof(unsigned long) !=

	BUILD_BUG_ON(n > sizeof(*stats64) / sizeof(u64));

		     sizeof(*stats64) / sizeof(u64));

	for (i = 0; i < n; i++)

	for (i = 0; i < n; i++)

		dst[i] = src[i];

		dst[i] = src[i];

	/* zero out counters that only exist in rtnl_link_stats64 */

	memset((char *)stats64 + n * sizeof(u64), 0,

	       sizeof(*stats64) - n * sizeof(u64));

#endif

#endif

}

}

EXPORT_SYMBOL(netdev_stats_to_stats64);

EXPORT_SYMBOL(netdev_stats_to_stats64);