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
  20 extern struct proto raw_prot;
  21
  22 extern struct raw_hashinfo raw_v4_hashinfo;
  23 struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
  24                              unsigned short num, __be32 raddr,
  25                              __be32 laddr, int dif, int sdif);
  26
  27 int raw_abort(struct sock *sk, int err);
  28 void raw_icmp_error(struct sk_buff *, int, u32);
  29 int raw_local_deliver(struct sk_buff *, int);
  30
  31 int raw_rcv(struct sock *, struct sk_buff *);
  32
  33 #define RAW_HTABLE_SIZE MAX_INET_PROTOS
  34
  35 struct raw_hashinfo {
  36         rwlock_t lock;
  37         struct hlist_head ht[RAW_HTABLE_SIZE];
  38 };
  39
  40 #ifdef CONFIG_PROC_FS
  41 int raw_proc_init(void);
  42 void raw_proc_exit(void);
  43
  44 struct raw_iter_state {
  45         struct seq_net_private p;
  46         int bucket;
  47 };
  48
  49 static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
  50 {
  51         return seq->private;
  52 }
  53 void *raw_seq_start(struct seq_file *seq, loff_t *pos);
  54 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
  55 void raw_seq_stop(struct seq_file *seq, void *v);
  56 #endif
  57
  58 int raw_hash_sk(struct sock *sk);
  59 void raw_unhash_sk(struct sock *sk);
  60 void raw_init(void);
  61
  62 struct 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
  69 static inline struct raw_sock *raw_sk(const struct sock *sk)
  70 {
  71         return (struct raw_sock *)sk;
  72 }
  73
  74 static 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 */