mirror of
https://github.com/torvalds/linux.git
synced 2024-11-10 14:11:52 +00:00
df51b84564
Use a 32bit hole in "struct net_offload" to store the remaining 32bit secrets used by TCPv6 and UDPv6. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20240306160031.874438-17-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
/* 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);
|
|
#endif
|
|
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 */
|