[net] adjust folder structure (#5587)

* [net] adjust folder structure
- 将lwip相关的文件夹，移入lwip文件夹
- Kconfig 分散到at netdev lwip sal文件夹中，使用menuconfig代替menu

10 files changed, 670 insertions, 0 deletions

diff --git a/components/net/sal/include/dfs_net/dfs_net.h b/components/net/sal/include/dfs_net/dfs_net.h
new file mode 100644
index 0000000000..82b7526603
--- /dev/null
+++ b/components/net/sal/include/dfs_net/dfs_net.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-02-17     Bernard      First version
+ * 2016-05-05     Bernard      rename dfs_lwip to dfs_net.
+ */
+
+#ifndef DFS_NET_H__
+#define DFS_NET_H__
+
+#include <dfs_file.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+const struct dfs_file_ops* dfs_net_get_fops(void);
+int dfs_net_getsocket(int fd);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/components/net/sal/include/sal.h b/components/net/sal/include/sal.h
new file mode 100644
index 0000000000..dd250e37b6
--- /dev/null
+++ b/components/net/sal/include/sal.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-05-17     ChenYong     First version
+ */
+
+#ifndef SAL_H__
+#define SAL_H__
+
+#include <rtdevice.h>
+
+#ifdef SAL_USING_POSIX
+#include <dfs_file.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(socklen_t) && !defined(SOCKLEN_T_DEFINED)
+typedef uint32_t socklen_t;
+#endif
+
+/* SAL socket magic word */
+#define SAL_SOCKET_MAGIC               0x5A10
+
+/* The maximum number of sockets structure */
+#ifndef SAL_SOCKETS_NUM
+#define SAL_SOCKETS_NUM                DFS_FD_MAX
+#endif
+
+/* The maximum number of protocol families */
+#ifndef SAL_PROTO_FAMILIES_NUM
+#define SAL_PROTO_FAMILIES_NUM         4
+#endif
+
+/* SAL socket offset */
+#ifndef SAL_SOCKET_OFFSET
+#define SAL_SOCKET_OFFSET              0
+#endif
+
+struct sal_socket
+{
+    uint32_t magic;                    /* SAL socket magic word */
+
+    int socket;                        /* SAL socket descriptor */
+    int domain;
+    int type;
+    int protocol;
+
+    struct netdev *netdev;             /* SAL network interface device */
+
+    void *user_data;                   /* user-specific data */
+#ifdef SAL_USING_TLS
+    void *user_data_tls;               /* user-specific TLS data */
+#endif
+};
+
+/* network interface socket opreations */
+struct sal_socket_ops
+{
+    int (*socket)     (int domain, int type, int protocol);
+    int (*closesocket)(int s);
+    int (*bind)       (int s, const struct sockaddr *name, socklen_t namelen);
+    int (*listen)     (int s, int backlog);
+    int (*connect)    (int s, const struct sockaddr *name, socklen_t namelen);
+    int (*accept)     (int s, struct sockaddr *addr, socklen_t *addrlen);
+    int (*sendto)     (int s, const void *data, size_t size, int flags, const struct sockaddr *to, socklen_t tolen);
+    int (*recvfrom)   (int s, void *mem, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen);
+    int (*getsockopt) (int s, int level, int optname, void *optval, socklen_t *optlen);
+    int (*setsockopt) (int s, int level, int optname, const void *optval, socklen_t optlen);
+    int (*shutdown)   (int s, int how);
+    int (*getpeername)(int s, struct sockaddr *name, socklen_t *namelen);
+    int (*getsockname)(int s, struct sockaddr *name, socklen_t *namelen);
+    int (*ioctlsocket)(int s, long cmd, void *arg);
+#ifdef SAL_USING_POSIX
+    int (*poll)       (struct dfs_fd *file, struct rt_pollreq *req);
+#endif
+};
+
+/* sal network database name resolving */
+struct sal_netdb_ops
+{
+    struct hostent* (*gethostbyname)  (const char *name);
+    int             (*gethostbyname_r)(const char *name, struct hostent *ret, char *buf, size_t buflen, struct hostent **result, int *h_errnop);
+    int             (*getaddrinfo)    (const char *nodename, const char *servname, const struct addrinfo *hints, struct addrinfo **res);
+    void            (*freeaddrinfo)   (struct addrinfo *ai);
+};
+
+struct sal_proto_family
+{
+    int family;                                  /* primary protocol families type */
+    int sec_family;                              /* secondary protocol families type */
+    const struct sal_socket_ops *skt_ops;        /* socket opreations */
+    const struct sal_netdb_ops *netdb_ops;       /* network database opreations */
+};
+
+/* SAL(Socket Abstraction Layer) initialize */
+int sal_init(void);
+/* Get SAL socket object by socket descriptor */
+struct sal_socket *sal_get_socket(int sock);
+
+/* check SAL socket netweork interface device internet status */
+int sal_check_netdev_internet_up(struct netdev *netdev);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SAL_H__ */
diff --git a/components/net/sal/include/sal_netdb.h b/components/net/sal/include/sal_netdb.h
new file mode 100644
index 0000000000..9b1421270f
--- /dev/null
+++ b/components/net/sal/include/sal_netdb.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-05-24     ChenYong     First version
+ */
+#ifndef SAL_NETDB_H__
+#define SAL_NETDB_H__
+
+#include <stddef.h>
+#include "sal_socket.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define EAI_NONAME      200
+#define EAI_SERVICE     201
+#define EAI_FAIL        202
+#define EAI_MEMORY      203
+#define EAI_FAMILY      204
+
+#define HOST_NOT_FOUND  210
+#define NO_DATA         211
+#define NO_RECOVERY     212
+#define TRY_AGAIN       213
+
+#define AI_PASSIVE      0x01
+#define AI_CANONNAME    0x02
+#define AI_NUMERICHOST  0x04
+#define AI_NUMERICSERV  0x08
+#define AI_V4MAPPED     0x10
+#define AI_ALL          0x20
+#define AI_ADDRCONFIG   0x40
+
+/* input flags for structure addrinfo */
+#define AI_PASSIVE      0x01
+#define AI_CANONNAME    0x02
+#define AI_NUMERICHOST  0x04
+#define AI_NUMERICSERV  0x08
+#define AI_V4MAPPED     0x10
+#define AI_ALL          0x20
+#define AI_ADDRCONFIG   0x40
+
+#define DNS_MAX_NAME_LENGTH 256
+
+struct hostent {
+    char  *h_name;      /* Official name of the host. */
+    char **h_aliases;   /* A pointer to an array of pointers to alternative host names,
+                           terminated by a null pointer. */
+    int    h_addrtype;  /* Address type. */
+    int    h_length;    /* The length, in bytes, of the address. */
+    char **h_addr_list; /* A pointer to an array of pointers to network addresses (in
+                           network byte order) for the host, terminated by a null pointer. */
+#define h_addr h_addr_list[0] /* for backward compatibility */
+};
+
+struct addrinfo {
+    int               ai_flags;      /* Input flags. */
+    int               ai_family;     /* Address family of socket. */
+    int               ai_socktype;   /* Socket type. */
+    int               ai_protocol;   /* Protocol of socket. */
+    socklen_t         ai_addrlen;    /* Length of socket address. */
+    struct sockaddr  *ai_addr;       /* Socket address of socket. */
+    char             *ai_canonname;  /* Canonical name of service location. */
+    struct addrinfo  *ai_next;       /* Pointer to next in list. */
+};
+
+struct hostent *sal_gethostbyname(const char *name);
+
+int sal_gethostbyname_r(const char *name, struct hostent *ret, char *buf,
+                size_t buflen, struct hostent **result, int *h_errnop);
+void sal_freeaddrinfo(struct addrinfo *ai);
+int sal_getaddrinfo(const char *nodename,
+       const char *servname,
+       const struct addrinfo *hints,
+       struct addrinfo **res);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SAL_NETDB_H__ */
diff --git a/components/net/sal/include/sal_socket.h b/components/net/sal/include/sal_socket.h
new file mode 100644
index 0000000000..c479d21c62
--- /dev/null
+++ b/components/net/sal/include/sal_socket.h
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-05-24     ChenYong     First version
+ */
+
+#ifndef SAL_SOCKET_H__
+#define SAL_SOCKET_H__
+
+#include <stddef.h>
+#include <arpa/inet.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(socklen_t) && !defined(SOCKLEN_T_DEFINED)
+typedef uint32_t socklen_t;
+#endif
+
+#if !defined(sa_family_t) && !defined(SA_FAMILY_T_DEFINED)
+typedef uint8_t sa_family_t;
+#endif
+
+/* If your port already typedef's in_port_t, define IN_PORT_T_DEFINED
+   to prevent this code from redefining it. */
+#if !defined(in_port_t) && !defined(IN_PORT_T_DEFINED)
+typedef uint16_t in_port_t;
+#endif
+
+/* Socket protocol types (TCP/UDP/RAW) */
+#define SOCK_STREAM     1
+#define SOCK_DGRAM      2
+#define SOCK_RAW        3
+
+#define SOCK_MAX        (SOCK_RAW + 1)
+
+/* Option flags per-socket. These must match the SOF_ flags in ip.h (checked in init.c) */
+#define SO_REUSEADDR    0x0004 /* Allow local address reuse */
+#define SO_KEEPALIVE    0x0008 /* keep connections alive */
+#define SO_BROADCAST    0x0020 /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */
+
+/* Additional options, not kept in so_options */
+#define SO_DEBUG        0x0001 /* Unimplemented: turn on debugging info recording */
+#define SO_ACCEPTCONN   0x0002 /* socket has had listen() */
+#define SO_DONTROUTE    0x0010 /* Unimplemented: just use interface addresses */
+#define SO_USELOOPBACK  0x0040 /* Unimplemented: bypass hardware when possible */
+#define SO_LINGER       0x0080 /* linger on close if data present */
+#define SO_DONTLINGER   ((int)(~SO_LINGER))
+#define SO_OOBINLINE    0x0100 /* Unimplemented: leave received OOB data in line */
+#define SO_REUSEPORT    0x0200 /* Unimplemented: allow local address & port reuse */
+#define SO_SNDBUF       0x1001 /* Unimplemented: send buffer size */
+#define SO_RCVBUF       0x1002 /* receive buffer size */
+#define SO_SNDLOWAT     0x1003 /* Unimplemented: send low-water mark */
+#define SO_RCVLOWAT     0x1004 /* Unimplemented: receive low-water mark */
+#define SO_SNDTIMEO     0x1005 /* send timeout */
+#define SO_RCVTIMEO     0x1006 /* receive timeout */
+#define SO_ERROR        0x1007 /* get error status and clear */
+#define SO_TYPE         0x1008 /* get socket type */
+#define SO_CONTIMEO     0x1009 /* Unimplemented: connect timeout */
+#define SO_NO_CHECK     0x100a /* don't create UDP checksum */
+
+/* Level number for (get/set)sockopt() to apply to socket itself */
+#define  SOL_SOCKET     0xfff    /* options for socket level */
+
+#define AF_UNSPEC       0
+#define AF_INET         2
+#define AF_INET6        10
+#define AF_CAN          29  /* Controller Area Network      */
+#define AF_AT           45  /* AT socket */
+#define AF_WIZ          46  /* WIZnet socket */
+#define PF_INET         AF_INET
+#define PF_INET6        AF_INET6
+#define PF_UNSPEC       AF_UNSPEC
+#define PF_CAN          AF_CAN
+#define PF_AT           AF_AT
+#define PF_WIZ          AF_WIZ
+
+#define AF_MAX          (AF_WIZ + 1)  /* For now.. */
+
+#define IPPROTO_IP      0
+#define IPPROTO_ICMP    1
+#define IPPROTO_TCP     6
+#define IPPROTO_UDP     17
+#define IPPROTO_IPV6    41
+#define IPPROTO_ICMPV6  58
+#define IPPROTO_UDPLITE 136
+#define IPPROTO_RAW     255
+
+/* Flags we can use with send and recv */
+#define MSG_PEEK        0x01    /* Peeks at an incoming message */
+#define MSG_WAITALL     0x02    /* Unimplemented: Requests that the function block until the full amount of data requested can be returned */
+#define MSG_OOB         0x04    /* Unimplemented: Requests out-of-band data. The significance and semantics of out-of-band data are protocol-specific */
+#define MSG_DONTWAIT    0x08    /* Nonblocking i/o for this operation only */
+#define MSG_MORE        0x10    /* Sender will send more */
+
+/* Options for level IPPROTO_IP */
+#define IP_TOS             1
+#define IP_TTL             2
+
+/* Options for level IPPROTO_TCP */
+#define TCP_NODELAY     0x01    /* don't delay send to coalesce packets */
+#define TCP_KEEPALIVE   0x02    /* send KEEPALIVE probes when idle for pcb->keep_idle milliseconds */
+#define TCP_KEEPIDLE    0x03    /* set pcb->keep_idle  - Same as TCP_KEEPALIVE, but use seconds for get/setsockopt */
+#define TCP_KEEPINTVL   0x04    /* set pcb->keep_intvl - Use seconds for get/setsockopt */
+#define TCP_KEEPCNT     0x05    /* set pcb->keep_cnt   - Use number of probes sent for get/setsockopt */
+
+/* Options and types related to multicast membership */
+#define IP_ADD_MEMBERSHIP  3
+#define IP_DROP_MEMBERSHIP 4
+/* Options and types for UDP multicast traffic handling */
+#define IP_MULTICAST_TTL   5
+#define IP_MULTICAST_IF    6
+#define IP_MULTICAST_LOOP  7
+
+typedef struct ip_mreq
+{
+    struct in_addr imr_multiaddr; /* IP multicast address of group */
+    struct in_addr imr_interface; /* local IP address of interface */
+} ip_mreq;
+
+/* The Type of Service provides an indication of the abstract parameters of the quality of service desired */
+#define IPTOS_TOS_MASK                 0x1E
+#define IPTOS_TOS(tos)                 ((tos) & IPTOS_TOS_MASK)
+#define IPTOS_LOWDELAY                 0x10
+#define IPTOS_THROUGHPUT               0x08
+#define IPTOS_RELIABILITY              0x04
+#define IPTOS_LOWCOST                  0x02
+#define IPTOS_MINCOST                  IPTOS_LOWCOST
+
+/* The Network Control precedence designation is intended to be used within a network only */
+#define IPTOS_PREC_MASK                0xe0
+#define IPTOS_PREC(tos)                ((tos) & IPTOS_PREC_MASK)
+#define IPTOS_PREC_NETCONTROL          0xe0
+#define IPTOS_PREC_INTERNETCONTROL     0xc0
+#define IPTOS_PREC_CRITIC_ECP          0xa0
+#define IPTOS_PREC_FLASHOVERRIDE       0x80
+#define IPTOS_PREC_FLASH               0x60
+#define IPTOS_PREC_IMMEDIATE           0x40
+#define IPTOS_PREC_PRIORITY            0x20
+#define IPTOS_PREC_ROUTINE             0x00
+
+/* Options for shatdown type */
+#ifndef SHUT_RD
+  #define SHUT_RD       0
+  #define SHUT_WR       1
+  #define SHUT_RDWR     2
+#endif
+
+struct sockaddr
+{
+    uint8_t        sa_len;
+    sa_family_t    sa_family;
+    char           sa_data[14];
+};
+
+#if NETDEV_IPV4
+/* members are in network byte order */
+struct sockaddr_in
+{
+    uint8_t        sin_len;
+    sa_family_t    sin_family;
+    in_port_t      sin_port;
+    struct in_addr sin_addr;
+#define SIN_ZERO_LEN 8
+    char            sin_zero[SIN_ZERO_LEN];
+};
+#endif /* NETDEV_IPV4 */
+
+#if NETDEV_IPV6
+struct sockaddr_in6
+{
+  uint8_t         sin6_len;      /* length of this structure    */
+  sa_family_t     sin6_family;   /* AF_INET6                    */
+  in_port_t       sin6_port;     /* Transport layer port #      */
+  uint32_t        sin6_flowinfo; /* IPv6 flow information       */
+  struct in6_addr sin6_addr;     /* IPv6 address                */
+  uint32_t        sin6_scope_id; /* Set of interfaces for scope */
+};
+#endif /* NETDEV_IPV6 */
+
+struct sockaddr_storage
+{
+    uint8_t        s2_len;
+    sa_family_t    ss_family;
+    char           s2_data1[2];
+    uint32_t       s2_data2[3];
+#if NETDEV_IPV6
+    uint32_t       s2_data3[3];
+#endif /* NETDEV_IPV6 */
+};
+
+int sal_accept(int socket, struct sockaddr *addr, socklen_t *addrlen);
+int sal_bind(int socket, const struct sockaddr *name, socklen_t namelen);
+int sal_shutdown(int socket, int how);
+int sal_getpeername (int socket, struct sockaddr *name, socklen_t *namelen);
+int sal_getsockname (int socket, struct sockaddr *name, socklen_t *namelen);
+int sal_getsockopt (int socket, int level, int optname, void *optval, socklen_t *optlen);
+int sal_setsockopt (int socket, int level, int optname, const void *optval, socklen_t optlen);
+int sal_connect(int socket, const struct sockaddr *name, socklen_t namelen);
+int sal_listen(int socket, int backlog);
+int sal_recvfrom(int socket, void *mem, size_t len, int flags,
+      struct sockaddr *from, socklen_t *fromlen);
+int sal_sendto(int socket, const void *dataptr, size_t size, int flags,
+    const struct sockaddr *to, socklen_t tolen);
+int sal_socket(int domain, int type, int protocol);
+int sal_closesocket(int socket);
+int sal_ioctlsocket(int socket, long cmd, void *arg);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SAL_SOCKET_H__ */
diff --git a/components/net/sal/include/sal_tls.h b/components/net/sal/include/sal_tls.h
new file mode 100644
index 0000000000..f211a3c1f8
--- /dev/null
+++ b/components/net/sal/include/sal_tls.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-11-10     ChenYong     First version
+ */
+#ifndef __SAL_TLS_H__
+#define __SAL_TLS_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <rtthread.h>
+
+/* Protocol level for TLS.
+ * Here, the same socket protocol level for TLS as in Linux was used.
+ */
+#define SOL_TLS             282
+
+/* Socket options for TLS */
+
+/* Socket option to select TLS credentials to use. */
+#define TLS_CRET_LIST        1
+/* Socket option to set select ciphersuites to use. */
+#define TLS_CIPHERSUITE_LIST 2
+/* Socket option to set peer verification level for TLS connection. */
+#define TLS_PEER_VERIFY      3
+/* Socket option to set role for DTLS connection. */
+#define TLS_DTLS_ROLE        4
+
+/* Protocol numbers for TLS protocols */
+#define PROTOCOL_TLS         256
+#define PROTOCOL_DTLS        257
+
+
+struct sal_proto_tls_ops
+{
+    int (*init)(void);
+    void* (*socket)(int socket);
+    int (*connect)(void *sock);
+    int (*send)(void *sock, const void *data, size_t size);
+    int (*recv)(void *sock, void *mem, size_t len);
+    int (*closesocket)(void *sock);
+
+    int (*set_cret_list)(void *sock, const void *cert, size_t size);              /* Set TLS credentials */
+    int (*set_ciphersurite)(void *sock, const void* ciphersurite, size_t size);   /* Set select ciphersuites */
+    int (*set_peer_verify)(void *sock, const void* peer_verify, size_t size);     /* Set peer verification */
+    int (*set_dtls_role)(void *sock, const void *dtls_role, size_t size);         /* Set role for DTLS */
+};
+
+struct sal_proto_tls
+{
+    char name[RT_NAME_MAX];                      /* TLS protocol name */
+    const struct sal_proto_tls_ops *ops;         /* SAL TLS protocol options */
+};
+
+/* SAL TLS protocol register */
+int sal_proto_tls_register(const struct sal_proto_tls *pt);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __SAL_TLS_H__ */
diff --git a/components/net/sal/include/socket/netdb.h b/components/net/sal/include/socket/netdb.h
new file mode 100644
index 0000000000..8394fddea5
--- /dev/null
+++ b/components/net/sal/include/socket/netdb.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-02-17     Bernard      First version
+ * 2018-05-24     ChenYong     Add socket abstraction layer
+ */
+
+#ifndef NETDB_H__
+#define NETDB_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+#include <sal_netdb.h>
+
+struct hostent *gethostbyname(const char *name);
+
+int gethostbyname_r(const char *name, struct hostent *ret, char *buf,
+                size_t buflen, struct hostent **result, int *h_errnop);
+void freeaddrinfo(struct addrinfo *ai);
+int getaddrinfo(const char *nodename,
+       const char *servname,
+       const struct addrinfo *hints,
+       struct addrinfo **res);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/components/net/sal/include/socket/netinet/in.h b/components/net/sal/include/socket/netinet/in.h
new file mode 100644
index 0000000000..37240547b4
--- /dev/null
+++ b/components/net/sal/include/socket/netinet/in.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-02-17     Bernard      First version
+ */
+
+#ifndef IN_H__
+#define IN_H__
+
+#include <sys/socket.h>
+
+#ifndef IN6_IS_ADDR_MULTICAST
+#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
+#endif
+
+#endif
diff --git a/components/net/sal/include/socket/netinet/tcp.h b/components/net/sal/include/socket/netinet/tcp.h
new file mode 100644
index 0000000000..a3b530186a
--- /dev/null
+++ b/components/net/sal/include/socket/netinet/tcp.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-02-17     Bernard      First version
+ */
+
+#ifndef TCP_H__
+#define TCP_H__
+
+#include <sys/socket.h>
+
+#endif
diff --git a/components/net/sal/include/socket/netinet/udp.h b/components/net/sal/include/socket/netinet/udp.h
new file mode 100644
index 0000000000..21f50d55e5
--- /dev/null
+++ b/components/net/sal/include/socket/netinet/udp.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-02-17     Bernard      First version
+ */
+
+#ifndef UDP_H__
+#define UDP_H__
+
+#include <sys/socket.h>
+
+#endif
diff --git a/components/net/sal/include/socket/sys_socket/sys/socket.h b/components/net/sal/include/socket/sys_socket/sys/socket.h
new file mode 100644
index 0000000000..a86240e2ff
--- /dev/null
+++ b/components/net/sal/include/socket/sys_socket/sys/socket.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-02-17     Bernard      First version
+ * 2018-05-17     ChenYong     Add socket abstraction layer
+ */
+
+#ifndef SYS_SOCKET_H_
+#define SYS_SOCKET_H_
+
+#include <rtthread.h>
+#include <sal_socket.h>
+#ifdef SAL_USING_TLS
+#include <sal_tls.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef SAL_USING_POSIX
+int accept(int s, struct sockaddr *addr, socklen_t *addrlen);
+int bind(int s, const struct sockaddr *name, socklen_t namelen);
+int shutdown(int s, int how);
+int getpeername(int s, struct sockaddr *name, socklen_t *namelen);
+int getsockname(int s, struct sockaddr *name, socklen_t *namelen);
+int getsockopt(int s, int level, int optname, void *optval, socklen_t *optlen);
+int setsockopt(int s, int level, int optname, const void *optval, socklen_t optlen);
+int connect(int s, const struct sockaddr *name, socklen_t namelen);
+int listen(int s, int backlog);
+int recv(int s, void *mem, size_t len, int flags);
+int recvfrom(int s, void *mem, size_t len, int flags,
+      struct sockaddr *from, socklen_t *fromlen);
+int send(int s, const void *dataptr, size_t size, int flags);
+int sendto(int s, const void *dataptr, size_t size, int flags,
+    const struct sockaddr *to, socklen_t tolen);
+int socket(int domain, int type, int protocol);
+int closesocket(int s);
+int ioctlsocket(int s, long cmd, void *arg);
+#else
+#define accept(s, addr, addrlen)                           sal_accept(s, addr, addrlen)
+#define bind(s, name, namelen)                             sal_bind(s, name, namelen)
+#define shutdown(s, how)                                   sal_shutdown(s, how)
+#define getpeername(s, name, namelen)                      sal_getpeername(s, name, namelen)
+#define getsockname(s, name, namelen)                      sal_getsockname(s, name, namelen)
+#define getsockopt(s, level, optname, optval, optlen)      sal_getsockopt(s, level, optname, optval, optlen)
+#define setsockopt(s, level, optname, optval, optlen)      sal_setsockopt(s, level, optname, optval, optlen)
+#define connect(s, name, namelen)                          sal_connect(s, name, namelen)
+#define listen(s, backlog)                                 sal_listen(s, backlog)
+#define recv(s, mem, len, flags)                           sal_recvfrom(s, mem, len, flags, NULL, NULL)
+#define recvfrom(s, mem, len, flags, from, fromlen)        sal_recvfrom(s, mem, len, flags, from, fromlen)
+#define send(s, dataptr, size, flags)                      sal_sendto(s, dataptr, size, flags, NULL, NULL)
+#define sendto(s, dataptr, size, flags, to, tolen)         sal_sendto(s, dataptr, size, flags, to, tolen)
+#define socket(domain, type, protocol)                     sal_socket(domain, type, protocol)
+#define closesocket(s)                                     sal_closesocket(s)
+#define ioctlsocket(s, cmd, arg)                           sal_ioctlsocket(s, cmd, arg)
+#endif /* SAL_USING_POSIX */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_SOCKET_H_ */