mirror of
https://github.com/torvalds/linux.git
synced 2024-11-05 11:32:04 +00:00
dfd56b8b38
Instead of testing defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
111 lines
3.7 KiB
C
111 lines
3.7 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.
|
|
*
|
|
* Definitions for the protocol dispatcher.
|
|
*
|
|
* Version: @(#)protocol.h 1.0.2 05/07/93
|
|
*
|
|
* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
|
|
*
|
|
* 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:
|
|
* 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>
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
#include <linux/ipv6.h>
|
|
#endif
|
|
|
|
#define MAX_INET_PROTOS 256 /* Must be a power of 2 */
|
|
|
|
|
|
/* This is used to register protocols. */
|
|
struct net_protocol {
|
|
int (*handler)(struct sk_buff *skb);
|
|
void (*err_handler)(struct sk_buff *skb, u32 info);
|
|
int (*gso_send_check)(struct sk_buff *skb);
|
|
struct sk_buff *(*gso_segment)(struct sk_buff *skb,
|
|
netdev_features_t features);
|
|
struct sk_buff **(*gro_receive)(struct sk_buff **head,
|
|
struct sk_buff *skb);
|
|
int (*gro_complete)(struct sk_buff *skb);
|
|
unsigned int no_policy:1,
|
|
netns_ok:1;
|
|
};
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
struct inet6_protocol {
|
|
int (*handler)(struct sk_buff *skb);
|
|
|
|
void (*err_handler)(struct sk_buff *skb,
|
|
struct inet6_skb_parm *opt,
|
|
u8 type, u8 code, int offset,
|
|
__be32 info);
|
|
|
|
int (*gso_send_check)(struct sk_buff *skb);
|
|
struct sk_buff *(*gso_segment)(struct sk_buff *skb,
|
|
netdev_features_t features);
|
|
struct sk_buff **(*gro_receive)(struct sk_buff **head,
|
|
struct sk_buff *skb);
|
|
int (*gro_complete)(struct sk_buff *skb);
|
|
|
|
unsigned int flags; /* INET6_PROTO_xxx */
|
|
};
|
|
|
|
#define INET6_PROTO_NOPOLICY 0x1
|
|
#define INET6_PROTO_FINAL 0x2
|
|
/* This should be set for any extension header which is compatible with GSO. */
|
|
#define INET6_PROTO_GSO_EXTHDR 0x4
|
|
#endif
|
|
|
|
/* 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;
|
|
|
|
char no_check; /* checksum on rcv/xmit/none? */
|
|
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 const struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS];
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
extern const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS];
|
|
#endif
|
|
|
|
extern int inet_add_protocol(const struct net_protocol *prot, unsigned char num);
|
|
extern int inet_del_protocol(const struct net_protocol *prot, unsigned char num);
|
|
extern void inet_register_protosw(struct inet_protosw *p);
|
|
extern void inet_unregister_protosw(struct inet_protosw *p);
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
extern int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char num);
|
|
extern int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char num);
|
|
extern int inet6_register_protosw(struct inet_protosw *p);
|
|
extern void inet6_unregister_protosw(struct inet_protosw *p);
|
|
#endif
|
|
|
|
#endif /* _PROTOCOL_H */
|