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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120/* 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. * * Definitions for the protocol dispatcher. * * Version: @(#)protocol.h 1.0.2 05/07/93 * * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * * Changes: * Alan Cox : Added a name field and a frag handler * field for later. * Alan Cox : Cleaned up, and sorted types. * Pedro Roque : inet6 protocols */ #ifndef _PROTOCOL_H#define _PROTOCOL_H
#include <linux/in6.h>#include <linux/skbuff.h>#if IS_ENABLED(CONFIG_IPV6)#include <linux/ipv6.h>#endif#include <linux/netdevice.h>
/* This is one larger than the largest protocol value that can be * found in an ipv4 or ipv6 header. Since in both cases the protocol * value is presented in a __u8, this is defined to be 256. */#define MAX_INET_PROTOS 256
/* This is used to register protocols. */struct net_protocol { int (*handler)(struct sk_buff *skb);
/* This returns an error if we weren't able to handle the error. */ int (*err_handler)(struct sk_buff *skb, u32 info);
unsigned int no_policy:1, /* does the protocol do more stringent * icmp tag validation than simple * socket lookup? */ icmp_strict_tag_validation:1; u32 secret;};
#if IS_ENABLED(CONFIG_IPV6)struct inet6_protocol { int (*handler)(struct sk_buff *skb);
/* This returns an error if we weren't able to handle the error. */ int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info);
unsigned int flags; /* INET6_PROTO_xxx */ u32 secret;};
#define INET6_PROTO_NOPOLICY 0x1#define INET6_PROTO_FINAL 0x2#endif
struct net_offload { struct offload_callbacks callbacks; unsigned int flags; /* Flags used by IPv6 for now */ u32 secret;};/* This should be set for any extension header which is compatible with GSO. */#define INET6_PROTO_GSO_EXTHDR 0x1
/* This is used to register socket interfaces for IP protocols. */struct inet_protosw { struct list_head list;
/* These two fields form the lookup key. */ unsigned short type; /* This is the 2nd argument to socket(2). */ unsigned short protocol; /* This is the L4 protocol number. */
struct proto *prot; const struct proto_ops *ops; unsigned char flags; /* See INET_PROTOSW_* below. */};#define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */#define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */#define INET_PROTOSW_ICSK 0x04 /* Is this an inet_connection_sock? */
extern struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS];extern const struct net_offload __rcu *inet_offloads[MAX_INET_PROTOS];extern const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS];
#if IS_ENABLED(CONFIG_IPV6)extern struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS];#endif
int inet_add_protocol(const struct net_protocol *prot, unsigned char num);int inet_del_protocol(const struct net_protocol *prot, unsigned char num);int inet_add_offload(const struct net_offload *prot, unsigned char num);int inet_del_offload(const struct net_offload *prot, unsigned char num);void inet_register_protosw(struct inet_protosw *p);void inet_unregister_protosw(struct inet_protosw *p);
#if IS_ENABLED(CONFIG_IPV6)int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char num);int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char num);int inet6_register_protosw(struct inet_protosw *p);void inet6_unregister_protosw(struct inet_protosw *p);#endifint inet6_add_offload(const struct net_offload *prot, unsigned char num);int inet6_del_offload(const struct net_offload *prot, unsigned char num);
#endif /* _PROTOCOL_H */