cregit-Linux how code gets into the kernel

Release 4.12 include/net/protocol.h

Directory: include/net
 * 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>
#include <linux/skbuff.h>
#include <linux/ipv6.h>
#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 {
void			(*early_demux)(struct sk_buff *skb);
void                    (*early_demux_handler)(struct sk_buff *skb);
int			(*handler)(struct sk_buff *skb);
void			(*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?


struct inet6_protocol {
void	(*early_demux)(struct sk_buff *skb);
void    (*early_demux_handler)(struct sk_buff *skb);
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);
unsigned int	flags;	/* INET6_PROTO_xxx */


#define INET6_PROTO_FINAL	0x2

struct net_offload {
struct offload_callbacks callbacks;
unsigned int		 flags;	/* Flags used by IPv6 for now */
/* This should be set for any extension header which is compatible with GSO. */


/* 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? */

/* 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];

extern struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS];

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);

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);
int 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 */

Overall Contributors

Linus Torvalds (pre-git)15733.05%617.65%
Vlad Yasevich11925.05%411.76%
Linus Torvalds7616.00%25.88%
David S. Miller326.74%411.76%
Subash Abhinov Kasiviswanathan245.05%12.94%
Eric Dumazet183.79%411.76%
Hideaki Yoshifuji / 吉藤英明122.53%12.94%
Arnaldo Carvalho de Melo112.32%38.82%
Denis V. Lunev71.47%12.94%
Hannes Frederic Sowa51.05%12.94%
Alexey Dobriyan51.05%25.88%
Alexey Kuznetsov30.63%12.94%
Brian Haley20.42%12.94%
Tom Lendacky20.42%12.94%
Daniel Lezcano10.21%12.94%
Al Viro10.21%12.94%
Directory: include/net
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