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| 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 | #if defined(CONFIG_INET) |
| 15 | atomic_long_t tcp_memory_allocated ____cacheline_aligned_in_smp; |
| 16 | atomic_long_t udp_memory_allocated ____cacheline_aligned_in_smp; |
| 17 | #endif |
| 18 | }; |
| 19 | |
| 20 | extern struct net_aligned_data net_aligned_data; |
| 21 | |
| 22 | #endif /* _NET_ALIGNED_DATA_H */ |
| 23 |
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