diff options
Diffstat (limited to 'net/tipc/core.h')
| -rw-r--r-- | net/tipc/core.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/tipc/core.h b/net/tipc/core.h index df34dcdd0607..03de7b213f55 100644 --- a/net/tipc/core.h +++ b/net/tipc/core.h @@ -3,6 +3,7 @@ * * Copyright (c) 2005-2006, 2013-2018 Ericsson AB * Copyright (c) 2005-2007, 2010-2013, Wind River Systems + * Copyright (c) 2020, Red Hat Inc * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -210,6 +211,17 @@ static inline u32 tipc_net_hash_mixes(struct net *net, int tn_rand) return net_hash_mix(&init_net) ^ net_hash_mix(net) ^ tn_rand; } +static inline u32 hash128to32(char *bytes) +{ + __be32 *tmp = (__be32 *)bytes; + u32 res; + + res = ntohl(tmp[0] ^ tmp[1] ^ tmp[2] ^ tmp[3]); + if (likely(res)) + return res; + return ntohl(tmp[0] | tmp[1] | tmp[2] | tmp[3]); +} + #ifdef CONFIG_SYSCTL int tipc_register_sysctl(void); void tipc_unregister_sysctl(void); |