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2 * include/net/tipc.h: Include file for TIPC message header routines
4 * Copyright (c) 2017 Ericsson AB
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8 * modification, are permitted provided that the following conditions are met:
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17 * this software without specific prior written permission.
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20 * GNU General Public License ("GPL") version 2 as published by the Free
21 * Software Foundation.
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39 #include <linux/random.h>
41 #define KEEPALIVE_MSG_MASK 0x0e080000 /* LINK_PROTOCOL + MSG_IS_KEEPALIVE */
43 struct tipc_basic_hdr
{
47 static inline __be32
tipc_hdr_rps_key(struct tipc_basic_hdr
*hdr
)
49 u32 w0
= ntohl(hdr
->w
[0]);
50 bool keepalive_msg
= (w0
& KEEPALIVE_MSG_MASK
) == KEEPALIVE_MSG_MASK
;
53 /* Return source node identity as key */
54 if (likely(!keepalive_msg
))
57 /* Spread PROBE/PROBE_REPLY messages across the cores */
58 get_random_bytes(&key
, sizeof(key
));