1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _INET_COMMON_H
3 #define _INET_COMMON_H
4 
5 #include <linux/indirect_call_wrapper.h>
6 #include <linux/net.h>
7 #include <linux/netdev_features.h>
8 #include <linux/types.h>
9 #include <net/sock.h>
10 
11 extern const struct proto_ops inet_stream_ops;
12 extern const struct proto_ops inet_dgram_ops;
13 
14 /*
15  *	INET4 prototypes used by INET6
16  */
17 
18 struct msghdr;
19 struct net;
20 struct page;
21 struct sock;
22 struct sockaddr;
23 struct socket;
24 
25 int inet_release(struct socket *sock);
26 int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
27 			int addr_len, int flags);
28 int __inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
29 			  int addr_len, int flags, int is_sendmsg);
30 int inet_dgram_connect(struct socket *sock, struct sockaddr *uaddr,
31 		       int addr_len, int flags);
32 int inet_accept(struct socket *sock, struct socket *newsock, int flags,
33 		bool kern);
34 int inet_send_prepare(struct sock *sk);
35 int inet_sendmsg(struct socket *sock, struct msghdr *msg, size_t size);
36 ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset,
37 		      size_t size, int flags);
38 int inet_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
39 		 int flags);
40 int inet_shutdown(struct socket *sock, int how);
41 int inet_listen(struct socket *sock, int backlog);
42 void inet_sock_destruct(struct sock *sk);
43 int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
44 /* Don't allocate port at this moment, defer to connect. */
45 #define BIND_FORCE_ADDRESS_NO_PORT	(1 << 0)
46 /* Grab and release socket lock. */
47 #define BIND_WITH_LOCK			(1 << 1)
48 /* Called from BPF program. */
49 #define BIND_FROM_BPF			(1 << 2)
50 /* Skip CAP_NET_BIND_SERVICE check. */
51 #define BIND_NO_CAP_NET_BIND_SERVICE	(1 << 3)
52 int __inet_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
53 		u32 flags);
54 int inet_getname(struct socket *sock, struct sockaddr *uaddr,
55 		 int peer);
56 int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
57 int inet_ctl_sock_create(struct sock **sk, unsigned short family,
58 			 unsigned short type, unsigned char protocol,
59 			 struct net *net);
60 int inet_recv_error(struct sock *sk, struct msghdr *msg, int len,
61 		    int *addr_len);
62 
63 struct sk_buff *inet_gro_receive(struct list_head *head, struct sk_buff *skb);
64 int inet_gro_complete(struct sk_buff *skb, int nhoff);
65 struct sk_buff *inet_gso_segment(struct sk_buff *skb,
66 				 netdev_features_t features);
67 
inet_ctl_sock_destroy(struct sock * sk)68 static inline void inet_ctl_sock_destroy(struct sock *sk)
69 {
70 	if (sk)
71 		sock_release(sk->sk_socket);
72 }
73 
74 #define indirect_call_gro_receive(f2, f1, cb, head, skb)	\
75 ({								\
76 	unlikely(gro_recursion_inc_test(skb)) ?			\
77 		NAPI_GRO_CB(skb)->flush |= 1, NULL :		\
78 		INDIRECT_CALL_2(cb, f2, f1, head, skb);		\
79 })
80 
81 #endif
82