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 bool raw_v4_match(struct net *net, struct sock *sk, unsigned short num, 24 __be32 raddr, __be32 laddr, int dif, int sdif); 25 26 int raw_abort(struct sock *sk, int err); 27 void raw_icmp_error(struct sk_buff *, int, u32); 28 int raw_local_deliver(struct sk_buff *, int); 29 30 int raw_rcv(struct sock *, struct sk_buff *); 31 32 #define RAW_HTABLE_SIZE MAX_INET_PROTOS 33 34 struct raw_hashinfo { 35 spinlock_t lock; 36 struct hlist_nulls_head ht[RAW_HTABLE_SIZE]; 37 }; 38 39 static inline void raw_hashinfo_init(struct raw_hashinfo *hashinfo) 40 { 41 int i; 42 43 spin_lock_init(&hashinfo->lock); 44 for (i = 0; i < RAW_HTABLE_SIZE; i++) 45 INIT_HLIST_NULLS_HEAD(&hashinfo->ht[i], i); 46 } 47 48 #ifdef CONFIG_PROC_FS 49 int raw_proc_init(void); 50 void raw_proc_exit(void); 51 52 struct raw_iter_state { 53 struct seq_net_private p; 54 int bucket; 55 }; 56 57 static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq) 58 { 59 return seq->private; 60 } 61 void *raw_seq_start(struct seq_file *seq, loff_t *pos); 62 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos); 63 void raw_seq_stop(struct seq_file *seq, void *v); 64 #endif 65 66 int raw_hash_sk(struct sock *sk); 67 void raw_unhash_sk(struct sock *sk); 68 void raw_init(void); 69 70 struct raw_sock { 71 /* inet_sock has to be the first member */ 72 struct inet_sock inet; 73 struct icmp_filter filter; 74 u32 ipmr_table; 75 }; 76 77 static inline struct raw_sock *raw_sk(const struct sock *sk) 78 { 79 return (struct raw_sock *)sk; 80 } 81 82 static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if, 83 int dif, int sdif) 84 { 85 #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV) 86 return inet_bound_dev_eq(READ_ONCE(net->ipv4.sysctl_raw_l3mdev_accept), 87 bound_dev_if, dif, sdif); 88 #else 89 return inet_bound_dev_eq(true, bound_dev_if, dif, sdif); 90 #endif 91 } 92 93 #endif /* _RAW_H */ 94