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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071// SPDX-License-Identifier: GPL-2.0-or-later/* * 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. * * INET protocol dispatch tables. * * Authors: Ross Biro * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * * Fixes: * Alan Cox : Ahah! udp icmp errors don't work because * udp_err is never called! * Alan Cox : Added new fields for init and ready for * proper fragmentation (_NO_ 4K limits!) * Richard Colella : Hang on hash collision * Vince Laviano : Modified inet_del_protocol() to correctly * maintain copy bit. */#include <linux/cache.h>#include <linux/module.h>#include <linux/netdevice.h>#include <linux/spinlock.h>#include <net/protocol.h>
struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS] __read_mostly;EXPORT_SYMBOL(inet_protos);const struct net_offload __rcu *inet_offloads[MAX_INET_PROTOS] __read_mostly;EXPORT_SYMBOL(inet_offloads);
int inet_add_protocol(const struct net_protocol *prot, unsigned char protocol){ return !cmpxchg((const struct net_protocol **)&inet_protos[protocol], NULL, prot) ? 0 : -1;}EXPORT_SYMBOL(inet_add_protocol);
int inet_add_offload(const struct net_offload *prot, unsigned char protocol){ return !cmpxchg((const struct net_offload **)&inet_offloads[protocol], NULL, prot) ? 0 : -1;}EXPORT_SYMBOL(inet_add_offload);
int inet_del_protocol(const struct net_protocol *prot, unsigned char protocol){ int ret;
ret = (cmpxchg((const struct net_protocol **)&inet_protos[protocol], prot, NULL) == prot) ? 0 : -1;
synchronize_net();
return ret;}EXPORT_SYMBOL(inet_del_protocol);
int inet_del_offload(const struct net_offload *prot, unsigned char protocol){ int ret;
ret = (cmpxchg((const struct net_offload **)&inet_offloads[protocol], prot, NULL) == prot) ? 0 : -1;
synchronize_net();
return ret;}EXPORT_SYMBOL(inet_del_offload);