From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- net/ipv6/protocol.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 net/ipv6/protocol.c (limited to 'net/ipv6/protocol.c') diff --git a/net/ipv6/protocol.c b/net/ipv6/protocol.c new file mode 100644 index 00000000000..52c1d58b6ca --- /dev/null +++ b/net/ipv6/protocol.c @@ -0,0 +1,86 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * PF_INET6 protocol dispatch tables. + * + * Version: $Id: protocol.c,v 1.10 2001/05/18 02:25:49 davem Exp $ + * + * Authors: Pedro Roque + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +/* + * Changes: + * + * Vince Laviano (vince@cs.stanford.edu) 16 May 2001 + * - Removed unused variable 'inet6_protocol_base' + * - Modified inet6_del_protocol() to correctly maintain copy bit. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include + +struct inet6_protocol *inet6_protos[MAX_INET_PROTOS]; +static DEFINE_SPINLOCK(inet6_proto_lock); + + +int inet6_add_protocol(struct inet6_protocol *prot, unsigned char protocol) +{ + int ret, hash = protocol & (MAX_INET_PROTOS - 1); + + spin_lock_bh(&inet6_proto_lock); + + if (inet6_protos[hash]) { + ret = -1; + } else { + inet6_protos[hash] = prot; + ret = 0; + } + + spin_unlock_bh(&inet6_proto_lock); + + return ret; +} + +/* + * Remove a protocol from the hash tables. + */ + +int inet6_del_protocol(struct inet6_protocol *prot, unsigned char protocol) +{ + int ret, hash = protocol & (MAX_INET_PROTOS - 1); + + spin_lock_bh(&inet6_proto_lock); + + if (inet6_protos[hash] != prot) { + ret = -1; + } else { + inet6_protos[hash] = NULL; + ret = 0; + } + + spin_unlock_bh(&inet6_proto_lock); + + synchronize_net(); + + return ret; +} -- cgit v1.2.3