2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
6 * PF_INET6 protocol dispatch tables.
8 * Authors: Pedro Roque <roque@di.fc.ul.pt>
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
19 * Vince Laviano (vince@cs.stanford.edu) 16 May 2001
20 * - Removed unused variable 'inet6_protocol_base'
21 * - Modified inet6_del_protocol() to correctly maintain copy bit.
23 #include <linux/module.h>
24 #include <linux/netdevice.h>
25 #include <linux/spinlock.h>
26 #include <net/protocol.h>
28 #if IS_ENABLED(CONFIG_IPV6)
29 const struct inet6_protocol __rcu
*inet6_protos
[MAX_INET_PROTOS
] __read_mostly
;
30 EXPORT_SYMBOL(inet6_protos
);
32 int inet6_add_protocol(const struct inet6_protocol
*prot
, unsigned char protocol
)
34 return !cmpxchg((const struct inet6_protocol
**)&inet6_protos
[protocol
],
37 EXPORT_SYMBOL(inet6_add_protocol
);
39 int inet6_del_protocol(const struct inet6_protocol
*prot
, unsigned char protocol
)
43 ret
= (cmpxchg((const struct inet6_protocol
**)&inet6_protos
[protocol
],
44 prot
, NULL
) == prot
) ? 0 : -1;
50 EXPORT_SYMBOL(inet6_del_protocol
);
53 const struct net_offload __rcu
*inet6_offloads
[MAX_INET_PROTOS
] __read_mostly
;
55 int inet6_add_offload(const struct net_offload
*prot
, unsigned char protocol
)
57 return !cmpxchg((const struct net_offload
**)&inet6_offloads
[protocol
],
60 EXPORT_SYMBOL(inet6_add_offload
);
62 int inet6_del_offload(const struct net_offload
*prot
, unsigned char protocol
)
66 ret
= (cmpxchg((const struct net_offload
**)&inet6_offloads
[protocol
],
67 prot
, NULL
) == prot
) ? 0 : -1;
73 EXPORT_SYMBOL(inet6_del_offload
);
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