1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 #ifndef _NET_ALIGNED_DATA_H 3 #define _NET_ALIGNED_DATA_H 4 5 #include <linux/atomic.h> 6 #include <linux/types.h> 7 8 /* Structure holding cacheline aligned fields on SMP builds. 9 * Each field or group should have an ____cacheline_aligned_in_smp 10 * attribute to ensure no accidental false sharing can happen. 11 */ 12 struct net_aligned_data { 13 atomic64_t net_cookie ____cacheline_aligned_in_smp; 14 }; 15 16 extern struct net_aligned_data net_aligned_data; 17 18 #endif /* _NET_ALIGNED_DATA_H */ 19