LXR linux/include/net/raw.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * INET         An implementation of the TCP/IP protocol suite for the LINUX
   4 *              operating system.  INET is implemented using the  BSD Socket
   5 *              interface as the means of communication with the user level.
   6 *
   7 *              Definitions for the RAW-IP module.
   8 *
   9 * Version:     @(#)raw.h       1.0.2   05/07/93
  10 *
  11 * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  12 */
  13#ifndef _RAW_H
  14#define _RAW_H
  15
  16#include <net/inet_sock.h>
  17#include <net/protocol.h>
  18#include <linux/icmp.h>
  19
  20extern struct proto raw_prot;
  21
  22extern struct raw_hashinfo raw_v4_hashinfo;
  23struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
  24                             unsigned short num, __be32 raddr,
  25                             __be32 laddr, int dif, int sdif);
  26
  27int raw_abort(struct sock *sk, int err);
  28void raw_icmp_error(struct sk_buff *, int, u32);
  29int raw_local_deliver(struct sk_buff *, int);
  30
  31int raw_rcv(struct sock *, struct sk_buff *);
  32
  33#define RAW_HTABLE_SIZE MAX_INET_PROTOS
  34
  35struct raw_hashinfo {
  36        rwlock_t lock;
  37        struct hlist_head ht[RAW_HTABLE_SIZE];
  38};
  39
  40#ifdef CONFIG_PROC_FS
  41int raw_proc_init(void);
  42void raw_proc_exit(void);
  43
  44struct raw_iter_state {
  45        struct seq_net_private p;
  46        int bucket;
  47};
  48
  49static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
  50{
  51        return seq->private;
  52}
  53void *raw_seq_start(struct seq_file *seq, loff_t *pos);
  54void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
  55void raw_seq_stop(struct seq_file *seq, void *v);
  56#endif
  57
  58int raw_hash_sk(struct sock *sk);
  59void raw_unhash_sk(struct sock *sk);
  60void raw_init(void);
  61
  62struct raw_sock {
  63        /* inet_sock has to be the first member */
  64        struct inet_sock   inet;
  65        struct icmp_filter filter;
  66        u32                ipmr_table;
  67};
  68
  69static inline struct raw_sock *raw_sk(const struct sock *sk)
  70{
  71        return (struct raw_sock *)sk;
  72}
  73
  74static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if,
  75                                       int dif, int sdif)
  76{
  77#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
  78        return inet_bound_dev_eq(!!net->ipv4.sysctl_raw_l3mdev_accept,
  79                                 bound_dev_if, dif, sdif);
  80#else
  81        return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
  82#endif
  83}
  84
  85#endif  /* _RAW_H */
  86