include/net/raw.h

   1 /*
   2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3  *              operating system.  INET is implemented using the  BSD Socket
   4  *              interface as the means of communication with the user level.
   5  *
   6  *              Definitions for the RAW-IP module.
   7  *
   8  * Version:     @(#)raw.h       1.0.2   05/07/93
   9  *
  10  * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  11  *
  12  *              This program is free software; you can redistribute it and/or
  13  *              modify it under the terms of the GNU General Public License
  14  *              as published by the Free Software Foundation; either version
  15  *              2 of the License, or (at your option) any later version.
  16  */
  17 #ifndef _RAW_H
  18 #define _RAW_H
  19
  20 #include <net/inet_sock.h>
  21 #include <net/protocol.h>
  22 #include <linux/icmp.h>
  23
  24 extern struct proto raw_prot;
  25
  26 extern struct raw_hashinfo raw_v4_hashinfo;
  27 struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
  28                              unsigned short num, __be32 raddr,
  29                              __be32 laddr, int dif, int sdif);
  30
  31 int raw_abort(struct sock *sk, int err);
  32 void raw_icmp_error(struct sk_buff *, int, u32);
  33 int raw_local_deliver(struct sk_buff *, int);
  34
  35 int raw_rcv(struct sock *, struct sk_buff *);
  36
  37 #define RAW_HTABLE_SIZE MAX_INET_PROTOS
  38
  39 struct raw_hashinfo {
  40         rwlock_t lock;
  41         struct hlist_head ht[RAW_HTABLE_SIZE];
  42 };
  43
  44 #ifdef CONFIG_PROC_FS
  45 int raw_proc_init(void);
  46 void raw_proc_exit(void);
  47
  48 struct raw_iter_state {
  49         struct seq_net_private p;
  50         int bucket;
  51 };
  52
  53 static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
  54 {
  55         return seq->private;
  56 }
  57 void *raw_seq_start(struct seq_file *seq, loff_t *pos);
  58 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
  59 void raw_seq_stop(struct seq_file *seq, void *v);
  60 #endif
  61
  62 int raw_hash_sk(struct sock *sk);
  63 void raw_unhash_sk(struct sock *sk);
  64 void raw_init(void);
  65
  66 struct raw_sock {
  67         /* inet_sock has to be the first member */
  68         struct inet_sock   inet;
  69         struct icmp_filter filter;
  70         u32                ipmr_table;
  71 };
  72
  73 static inline struct raw_sock *raw_sk(const struct sock *sk)
  74 {
  75         return (struct raw_sock *)sk;
  76 }
  77
  78 static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if,
  79                                        int dif, int sdif)
  80 {
  81 #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
  82         return inet_bound_dev_eq(!!net->ipv4.sysctl_raw_l3mdev_accept,
  83                                  bound_dev_if, dif, sdif);
  84 #else
  85         return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
  86 #endif
  87 }
  88
  89 #endif  /* _RAW_H */