added PPP Sequential API module, based from the Network Interface Sequential API module

src/include/lwip/opt.h

@@ -1703,6 +1703,13 @@
 
 #if PPP_SUPPORT
 
+/**
+ * LWIP_PPP_API==1: Support PPP API (in pppapi.c)
+ */
+#ifndef LWIP_PPP_API
+#define LWIP_PPP_API                    0
+#endif
+
 /**
  * PPP_FCS_TABLE: Keep a 256*2 byte table to speed up FCS calculation
  */

src/include/lwip/pppapi.h

@@ -0,0 +1,128 @@
+/*
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ */
+
+#ifndef __LWIP_PPPAPI_H__
+#define __LWIP_PPPAPI_H__
+
+#include "lwip/opt.h"
+
+#if LWIP_PPP_API /* don't build if not configured for use in lwipopts.h */
+
+#include "lwip/sys.h"
+#include "ppp.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct pppapi_msg_msg {
+#if !LWIP_TCPIP_CORE_LOCKING
+  sys_sem_t sem;
+#endif /* !LWIP_TCPIP_CORE_LOCKING */
+  int err;
+  ppp_pcb *ppp;
+  union {
+    struct {
+      u8_t authtype;
+      char *user;
+      char *passwd;
+    } setauth;
+#if PPPOS_SUPPORT
+    struct {
+      sio_fd_t fd;
+      ppp_link_status_cb_fn link_status_cb;
+      void *link_status_ctx;
+    } serialopen;
+#endif /* PPPOS_SUPPORT */
+#if PPPOE_SUPPORT
+    struct {
+      struct netif *ethif;
+      const char *service_name;
+      const char *concentrator_name;
+      ppp_link_status_cb_fn link_status_cb;
+      void *link_status_ctx;
+    } ethernetopen;
+#endif /* PPPOE_SUPPORT */
+    struct {
+      int cmd;
+      void *arg;
+    } ioctl;
+#if PPPOS_SUPPORT && !PPP_INPROC_OWNTHREAD
+    struct {
+      u_char *data;
+      int len;
+    } ppposinput;
+#endif /* PPPOS_SUPPORT && !PPP_INPROC_OWNTHREAD */
+#if LWIP_NETIF_STATUS_CALLBACK
+    struct {
+      netif_status_callback_fn status_callback;
+    } netifstatuscallback;
+#endif /* LWIP_NETIF_STATUS_CALLBACK */
+#if LWIP_NETIF_LINK_CALLBACK
+    struct {
+      netif_status_callback_fn link_callback;
+    } netiflinkcallback;
+#endif /* LWIP_NETIF_LINK_CALLBACK */
+  } msg;
+};
+
+struct pppapi_msg {
+  void (* function)(struct pppapi_msg_msg *msg);
+  struct pppapi_msg_msg msg;
+};
+
+/* API for application */
+ppp_pcb *pppapi_new(void);
+void pppapi_set_auth(ppp_pcb *pcb, u8_t authtype, char *user, char *passwd);
+#if PPPOS_SUPPORT
+int pppapi_over_serial_open(ppp_pcb *pcb, sio_fd_t fd, ppp_link_status_cb_fn link_status_cb, void *link_status_ctx);
+#endif /* PPPOS_SUPPORT */
+#if PPPOE_SUPPORT
+int pppapi_over_ethernet_open(ppp_pcb *pcb, struct netif *ethif, const char *service_name,
+		const char *concentrator_name, ppp_link_status_cb_fn link_status_cb,
+		void *link_status_ctx);
+#endif /* PPPOE_SUPPORT */
+int pppapi_close(ppp_pcb *pcb);
+void pppapi_sighup(ppp_pcb *pcb);
+int pppapi_ioctl(ppp_pcb *pcb, int cmd, void *arg);
+#if PPPOS_SUPPORT && !PPP_INPROC_OWNTHREAD
+void ppposapi_input(ppp_pcb *pcb, u_char* data, int len);
+#endif /* PPPOS_SUPPORT && !PPP_INPROC_OWNTHREAD */
+#if LWIP_NETIF_STATUS_CALLBACK
+void pppapi_set_netif_statuscallback(ppp_pcb *pcb, netif_status_callback_fn status_callback);
+#endif /* LWIP_NETIF_STATUS_CALLBACK */
+#if LWIP_NETIF_LINK_CALLBACK
+void pppapi_set_netif_linkcallback(ppp_pcb *pcb, netif_status_callback_fn link_callback);
+#endif /* LWIP_NETIF_LINK_CALLBACK */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIP_PPP_API */
+
+#endif /* __LWIP_PPPAPI_H__ */

src/include/lwip/tcpip.h

@@ -38,6 +38,7 @@
 
 #include "lwip/api_msg.h"
 #include "lwip/netifapi.h"
+#include "lwip/pppapi.h"
 #include "lwip/pbuf.h"
 #include "lwip/api.h"
 #include "lwip/sys.h"
@@ -77,6 +78,8 @@ extern sys_mutex_t lock_tcpip_core;
 #define TCPIP_APIMSG_ACK(m)
 #define TCPIP_NETIFAPI(m)     tcpip_netifapi_lock(m)
 #define TCPIP_NETIFAPI_ACK(m)
+#define TCPIP_PPPAPI(m)       tcpip_pppapi_lock(m)
+#define TCPIP_PPPAPI_ACK(m)
 #else /* LWIP_TCPIP_CORE_LOCKING */
 #define LOCK_TCPIP_CORE()
 #define UNLOCK_TCPIP_CORE()
@@ -85,6 +88,8 @@ extern sys_mutex_t lock_tcpip_core;
 #define TCPIP_APIMSG_ACK(m)   sys_sem_signal(&m->conn->op_completed)
 #define TCPIP_NETIFAPI(m)     tcpip_netifapi(m)
 #define TCPIP_NETIFAPI_ACK(m) sys_sem_signal(&m->sem)
+#define TCPIP_PPPAPI(m)       tcpip_pppapi(m)
+#define TCPIP_PPPAPI_ACK(m)   sys_sem_signal(&m->sem)
 #endif /* LWIP_TCPIP_CORE_LOCKING */
 
 /** Function prototype for the init_done function passed to tcpip_init */
@@ -110,6 +115,13 @@ err_t tcpip_netifapi_lock(struct netifapi_msg *netifapimsg);
 #endif /* LWIP_TCPIP_CORE_LOCKING */
 #endif /* LWIP_NETIF_API */
 
+#if LWIP_PPP_API
+err_t tcpip_pppapi(struct pppapi_msg *pppapimsg);
+#if LWIP_TCPIP_CORE_LOCKING
+err_t tcpip_pppapi_lock(struct pppapi_msg *pppapimsg);
+#endif /* LWIP_TCPIP_CORE_LOCKING */
+#endif /* LWIP_PPP_API */
+
 err_t tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block);
 #define tcpip_callback(f, ctx)              tcpip_callback_with_block(f, ctx, 1)
 
@@ -134,6 +146,9 @@ enum tcpip_msg_type {
 #if LWIP_NETIF_API
   TCPIP_MSG_NETIFAPI,
 #endif /* LWIP_NETIF_API */
+#if LWIP_PPP_API
+  TCPIP_MSG_PPPAPI,
+#endif /* LWIP_PPP_API */
 #if LWIP_TCPIP_TIMEOUT
   TCPIP_MSG_TIMEOUT,
   TCPIP_MSG_UNTIMEOUT,
@@ -152,6 +167,9 @@ struct tcpip_msg {
 #if LWIP_NETIF_API
     struct netifapi_msg *netifapimsg;
 #endif /* LWIP_NETIF_API */
+#if LWIP_PPP_API
+    struct pppapi_msg *pppapimsg;
+#endif /* LWIP_PPP_API */
     struct {
       struct pbuf *p;
       struct netif *netif;