1 /**
2 * Copyright (c) 2023-2024 Marcin Niestroj
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #ifndef __DRIVERS_NET_NSOS_H__
8 #define __DRIVERS_NET_NSOS_H__
9
10 #include <stddef.h>
11 #include <stdint.h>
12
13 /* Protocol families. */
14 #define NSOS_MID_PF_UNSPEC 0 /**< Unspecified protocol family. */
15 #define NSOS_MID_PF_INET 1 /**< IP protocol family version 4. */
16 #define NSOS_MID_PF_INET6 2 /**< IP protocol family version 6. */
17 #define NSOS_MID_PF_UNIX 6 /**< Unix protocol. */
18 #define NSOS_MID_PF_PACKET 3 /**< Packet family. */
19
20 /* Address families. */
21 #define NSOS_MID_AF_UNSPEC NSOS_MID_PF_UNSPEC /**< Unspecified address family. */
22 #define NSOS_MID_AF_INET NSOS_MID_PF_INET /**< IP protocol family version 4. */
23 #define NSOS_MID_AF_INET6 NSOS_MID_PF_INET6 /**< IP protocol family version 6. */
24 #define NSOS_MID_AF_UNIX NSOS_MID_PF_UNIX /**< Unix protocol. */
25 #define NSOS_MID_AF_PACKET NSOS_MID_PF_PACKET /**< Packet family. */
26
27 /** Protocol numbers from IANA/BSD */
28 enum nsos_mid_net_ip_protocol {
29 NSOS_MID_IPPROTO_IP = 0, /**< IP protocol (pseudo-val for setsockopt() */
30 NSOS_MID_IPPROTO_ICMP = 1, /**< ICMP protocol */
31 NSOS_MID_IPPROTO_IGMP = 2, /**< IGMP protocol */
32 NSOS_MID_IPPROTO_ETH_P_ALL = 3, /**< Every packet. from linux if_ether.h */
33 NSOS_MID_IPPROTO_IPIP = 4, /**< IPIP tunnels */
34 NSOS_MID_IPPROTO_TCP = 6, /**< TCP protocol */
35 NSOS_MID_IPPROTO_UDP = 17, /**< UDP protocol */
36 NSOS_MID_IPPROTO_IPV6 = 41, /**< IPv6 protocol */
37 NSOS_MID_IPPROTO_ICMPV6 = 58, /**< ICMPv6 protocol */
38 NSOS_MID_IPPROTO_RAW = 255, /**< RAW IP packets */
39 };
40
41 /** Socket type */
42 enum nsos_mid_net_sock_type {
43 NSOS_MID_SOCK_STREAM = 1, /**< Stream socket type */
44 NSOS_MID_SOCK_DGRAM, /**< Datagram socket type */
45 NSOS_MID_SOCK_RAW /**< RAW socket type */
46 };
47
48 #define NSOS_MID_MSG_PEEK 0x02
49 #define NSOS_MID_MSG_TRUNC 0x20
50 #define NSOS_MID_MSG_DONTWAIT 0x40
51 #define NSOS_MID_MSG_WAITALL 0x100
52
53 struct nsos_mid_sockaddr {
54 uint16_t sa_family; /* Address family */
55 char sa_data[]; /* Socket address */
56 };
57
58 struct nsos_mid_sockaddr_in {
59 uint16_t sin_family; /* AF_INET */
60 uint16_t sin_port; /* Port number */
61 uint32_t sin_addr; /* IPv4 address */
62 };
63
64 struct nsos_mid_sockaddr_in6 {
65 uint16_t sin6_family; /* AF_INET6 */
66 uint16_t sin6_port; /* Port number */
67 uint8_t sin6_addr[16];
68 uint32_t sin6_scope_id; /* Set of interfaces for a scope */
69 };
70
71 #define UNIX_PATH_MAX 108
72 struct nsos_mid_sockaddr_un {
73 sa_family_t sun_family; /* AF_UNIX */
74 char sun_path[UNIX_PATH_MAX]; /* pathname */
75 };
76
77 struct nsos_mid_sockaddr_ll {
78 sa_family_t sll_family; /**< Always AF_PACKET */
79 uint16_t sll_protocol; /**< Physical-layer protocol */
80 int sll_ifindex; /**< Interface number */
81 uint16_t sll_hatype; /**< ARP hardware type */
82 uint8_t sll_pkttype; /**< Packet type */
83 uint8_t sll_halen; /**< Length of address */
84 uint8_t sll_addr[8]; /**< Physical-layer address, big endian */
85 };
86
87 struct nsos_mid_sockaddr_storage {
88 union {
89 struct nsos_mid_sockaddr_in sockaddr_in;
90 struct nsos_mid_sockaddr_in6 sockaddr_in6;
91 struct nsos_mid_sockaddr_un sockaddr_un;
92 struct nsos_mid_sockaddr_ll sockaddr_ll;
93 };
94 };
95
96 struct nsos_mid_pollfd {
97 int fd;
98 short events;
99 short revents;
100
101 void (*cb)(struct nsos_mid_pollfd *pollfd_mid);
102 };
103
104 struct nsos_mid_addrinfo {
105 int ai_flags;
106 int ai_family;
107 int ai_socktype;
108 int ai_protocol;
109 size_t ai_addrlen;
110 struct nsos_mid_sockaddr *ai_addr;
111 char *ai_canonname;
112 struct nsos_mid_addrinfo *ai_next;
113 };
114
115 struct nsos_mid_iovec {
116 void *iov_base;
117 size_t iov_len;
118 };
119
120 struct nsos_mid_msghdr {
121 void *msg_name; /* optional socket address, big endian */
122 size_t msg_namelen; /* size of socket address */
123 struct nsos_mid_iovec *msg_iov; /* scatter/gather array */
124 size_t msg_iovlen; /* number of elements in msg_iov */
125 void *msg_control; /* ancillary data */
126 size_t msg_controllen; /* ancillary data buffer len */
127 int msg_flags; /* flags on received message */
128 };
129
nsos_socket_flag_convert(int * flags_a,int flag_a,int * flags_b,int flag_b)130 static inline void nsos_socket_flag_convert(int *flags_a, int flag_a,
131 int *flags_b, int flag_b)
132 {
133 if ((*flags_a) & flag_a) {
134 *flags_a &= ~flag_a;
135 *flags_b |= flag_b;
136 }
137 }
138
139 int nsos_adapt_get_errno(void);
140
141 int nsos_adapt_socket(int family, int type, int proto);
142
143 int nsos_adapt_bind(int fd, const struct nsos_mid_sockaddr *addr, size_t addrlen);
144 int nsos_adapt_connect(int fd, const struct nsos_mid_sockaddr *addr, size_t addrlen);
145 int nsos_adapt_listen(int fd, int backlog);
146 int nsos_adapt_accept(int fd, struct nsos_mid_sockaddr *addr, size_t *addrlen);
147 int nsos_adapt_sendto(int fd, const void *buf, size_t len, int flags,
148 const struct nsos_mid_sockaddr *addr, size_t addrlen);
149 int nsos_adapt_sendmsg(int fd, const struct nsos_mid_msghdr *msg_mid, int flags);
150 int nsos_adapt_recvfrom(int fd, void *buf, size_t len, int flags,
151 struct nsos_mid_sockaddr *addr, size_t *addrlen);
152 int nsos_adapt_getsockopt(int fd, int level, int optname,
153 void *optval, size_t *optlen);
154 int nsos_adapt_setsockopt(int fd, int level, int optname,
155 const void *optval, size_t optlen);
156
157 void nsos_adapt_poll_add(struct nsos_mid_pollfd *pollfd);
158 void nsos_adapt_poll_remove(struct nsos_mid_pollfd *pollfd);
159 void nsos_adapt_poll_update(struct nsos_mid_pollfd *pollfd);
160
161 int nsos_adapt_fcntl_getfl(int fd);
162 int nsos_adapt_fcntl_setfl(int fd, int flags);
163
164 int nsos_adapt_fionread(int fd, int *avail);
165
166 int nsos_adapt_dup(int oldfd);
167
168 int nsos_adapt_getaddrinfo(const char *node, const char *service,
169 const struct nsos_mid_addrinfo *hints,
170 struct nsos_mid_addrinfo **res,
171 int *system_errno);
172 void nsos_adapt_freeaddrinfo(struct nsos_mid_addrinfo *res);
173
174 #endif /* __DRIVERS_NET_NSOS_H__ */
175
