mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
39af0c409e
since f9242b6b28
inet: Sanitize inet{,6} protocol demux.
there are not pretended hash tables for ipv4 or
ipv6 protocol handler.
Signed-off-by: Baker Zhang <Baker.kernel@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* Authors: Pedro Roque <roque@di.fc.ul.pt>
|
|
*
|
|
* 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 <linux/module.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/spinlock.h>
|
|
#include <net/protocol.h>
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS] __read_mostly;
|
|
EXPORT_SYMBOL(inet6_protos);
|
|
|
|
int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol)
|
|
{
|
|
return !cmpxchg((const struct inet6_protocol **)&inet6_protos[protocol],
|
|
NULL, prot) ? 0 : -1;
|
|
}
|
|
EXPORT_SYMBOL(inet6_add_protocol);
|
|
|
|
int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char protocol)
|
|
{
|
|
int ret;
|
|
|
|
ret = (cmpxchg((const struct inet6_protocol **)&inet6_protos[protocol],
|
|
prot, NULL) == prot) ? 0 : -1;
|
|
|
|
synchronize_net();
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(inet6_del_protocol);
|
|
#endif
|
|
|
|
const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS] __read_mostly;
|
|
|
|
int inet6_add_offload(const struct net_offload *prot, unsigned char protocol)
|
|
{
|
|
return !cmpxchg((const struct net_offload **)&inet6_offloads[protocol],
|
|
NULL, prot) ? 0 : -1;
|
|
}
|
|
EXPORT_SYMBOL(inet6_add_offload);
|
|
|
|
int inet6_del_offload(const struct net_offload *prot, unsigned char protocol)
|
|
{
|
|
int ret;
|
|
|
|
ret = (cmpxchg((const struct net_offload **)&inet6_offloads[protocol],
|
|
prot, NULL) == prot) ? 0 : -1;
|
|
|
|
synchronize_net();
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(inet6_del_offload);
|