feat(esp8266): Add WIFI socket and async APIs

1. add section to linking file

components/esp8266/include/net/if_packet.h

@@ -0,0 +1,41 @@
+// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _IF_PACKET_H
+#define _IF_PACKET_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * socket II type address used by low-level module whose address is base on MAC address
+ *
+ * Note: Now it just support 802.3 and 802.11 protocol, so only "sll_addr" works here
+ */
+struct sockaddr_ll {
+    unsigned short      sll_family;     // it must be AF_PACKET
+    unsigned short      sll_protocol;   // physics level protocol
+    int                 sll_ifindex;    // interface index not socket ID
+    unsigned short      sll_hatype;     // ARP hardware address type
+    unsigned char       sll_pkttype;    // packet type
+    unsigned char       sll_halen;      // hardware address length
+    unsigned char       sll_addr[8];    // address data
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _IF_PACKET_H */

components/esp8266/include/net/if_socket.h

@@ -0,0 +1,76 @@
+// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _IF_ETHER_H
+#define _IF_ETHER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * undefine some global macro
+ */
+#undef ETH_P_ALL
+#undef ETH_P_ARP
+#undef ETH_P_IP
+
+#undef AF_PACKET
+
+#undef SOCK_RAW
+
+/*
+ * socket domain
+ */
+#define AF_PACKET 0
+
+/*
+ * socket type
+ */
+#define SOCK_RAW 0
+
+/*
+ * use 16(2^4) type for socket
+ */ 
+#define IF_SOCK_SHIFT           4
+#define IF_SOCK_TYPE(d)         (d & 0xf)
+#define IF_SOCK_DATA(t, s)      ((1 << (s + IF_SOCK_SHIFT)) + t)
+
+enum if_sock_type {
+    IF_SOCK_ETH = 0,
+    IF_SOCK_WIFI,
+
+    IF_SOCK_MAX,
+};
+
+#define IF_ETH_DATA(s)          IF_SOCK_DATA(IF_SOCK_ETH, s)
+#define IF_WIFI_DATA(s)         IF_SOCK_DATA(IF_SOCK_WIFI, s)
+
+/*
+ * socket protocol
+ */
+#define ETH_P_IP                IF_ETH_DATA(0)
+#define ETH_P_ARP               IF_ETH_DATA(1)
+#define ETH_P_ALL               ETH_P_IP | ETH_P_ARP
+
+#define WIFI_P_MNG              IF_WIFI_DATA(0)
+#define WIFI_P_CTL              IF_WIFI_DATA(1)
+#define WIFI_P_DAT              IF_WIFI_DATA(2)
+#define WIFI_P_ALL              WIFI_P_MNG | WIFI_P_CTL | WIFI_P_DAT
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _IF_ETHER_H */

components/esp8266/include/net/sockio.h

@@ -0,0 +1,46 @@
+// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _SOCKIO_H
+#define _SOCKIO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* espressif specific socket ioctls */
+#define SIOESPSTART         0x5500              /* start of espressif specific code */
+
+/* routing table calls. */
+#define SIOCADDRT           0x890B              /* add routing table entry	*/
+#define SIOCDELRT           0x890C              /* delete routing table entry	*/
+#define SIOCRTMSG           0x890D              /* call to routing system	*/
+
+/* socket configuration controls. */
+#define SIOCGIFADDR         0x8915              /* get PA address		*/
+#define SIOCSIFADDR         0x8916              /* set PA address		*/
+#define SIOCGIFBRDADDR      0x8919              /* get broadcast PA address	*/
+#define SIOCSIFBRDADDR      0x891a              /* set broadcast PA address	*/
+#define SIOCGIFNETMASK      0x891b              /* get network PA mask		*/
+#define SIOCSIFNETMASK      0x891c              /* set network PA mask		*/
+#define SIOCSIFHWADDR       0x8924              /* set hardware address 	*/
+#define SIOCGIFHWADDR       0x8927              /* Get hardware address		*/
+#define SIOCGIFINDEX        0x8933              /* name -> if_index mapping	*/
+#define SIOGIFINDEX         SIOCGIFINDEX        /* misprint compatibility :-)	*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SOCKIO_H */