Squashed 'lib/lwip/lwip/' content from commit 0a0452b2c39b

git-subtree-dir: lib/lwip/lwip
git-subtree-split: 0a0452b2c39bdd91e252aef045c115f88f6ca773

1 files changed, 221 insertions, 0 deletions

diff --git a/contrib/examples/ppp/pppos_example.c b/contrib/examples/ppp/pppos_example.c
new file mode 100644
index 00000000000..0d18ce5240d
--- /dev/null
+++ b/contrib/examples/ppp/pppos_example.c
@@ -0,0 +1,221 @@
+/*
+ * 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.
+ *
+ * Author: Dirk Ziegelmeier <dziegel@gmx.de>
+ *
+ */
+
+#include "lwip/dns.h"
+
+#ifndef PPPOS_SUPPORT
+#define PPPOS_SUPPORT 0
+#endif /* PPPOS_SUPPORT */
+
+#if PPPOS_SUPPORT
+#include "netif/ppp/pppos.h"
+#include "lwip/sio.h"
+#define PPP_PTY_TEST 1
+#endif /* PPPOS_SUPPORT */
+
+#include "pppos_example.h"
+
+#include <stdio.h>
+
+#if PPPOS_SUPPORT
+static sio_fd_t ppp_sio;
+static ppp_pcb *ppp;
+static struct netif pppos_netif;
+
+static void
+pppos_rx_thread(void *arg)
+{
+  u32_t len;
+  u8_t buffer[128];
+  LWIP_UNUSED_ARG(arg);
+
+  /* Please read the "PPPoS input path" chapter in the PPP documentation. */
+  while (1) {
+    len = sio_read(ppp_sio, buffer, sizeof(buffer));
+    if (len > 0) {
+      /* Pass received raw characters from PPPoS to be decoded through lwIP
+       * TCPIP thread using the TCPIP API. This is thread safe in all cases
+       * but you should avoid passing data byte after byte. */
+      pppos_input_tcpip(ppp, buffer, len);
+    }
+  }
+}
+
+static void
+ppp_link_status_cb(ppp_pcb *pcb, int err_code, void *ctx)
+{
+    struct netif *pppif = ppp_netif(pcb);
+    LWIP_UNUSED_ARG(ctx);
+
+    switch(err_code) {
+    case PPPERR_NONE:               /* No error. */
+        {
+#if LWIP_DNS
+        const ip_addr_t *ns;
+#endif /* LWIP_DNS */
+        fprintf(stderr, "ppp_link_status_cb: PPPERR_NONE\n\r");
+#if LWIP_IPV4
+        fprintf(stderr, "   our_ip4addr = %s\n\r", ip4addr_ntoa(netif_ip4_addr(pppif)));
+        fprintf(stderr, "   his_ipaddr  = %s\n\r", ip4addr_ntoa(netif_ip4_gw(pppif)));
+        fprintf(stderr, "   netmask     = %s\n\r", ip4addr_ntoa(netif_ip4_netmask(pppif)));
+#endif /* LWIP_IPV4 */
+#if LWIP_IPV6
+        fprintf(stderr, "   our_ip6addr = %s\n\r", ip6addr_ntoa(netif_ip6_addr(pppif, 0)));
+#endif /* LWIP_IPV6 */
+
+#if LWIP_DNS
+        ns = dns_getserver(0);
+        fprintf(stderr, "   dns1        = %s\n\r", ipaddr_ntoa(ns));
+        ns = dns_getserver(1);
+        fprintf(stderr, "   dns2        = %s\n\r", ipaddr_ntoa(ns));
+#endif /* LWIP_DNS */
+#if PPP_IPV6_SUPPORT
+        fprintf(stderr, "   our6_ipaddr = %s\n\r", ip6addr_ntoa(netif_ip6_addr(pppif, 0)));
+#endif /* PPP_IPV6_SUPPORT */
+        }
+        break;
+
+    case PPPERR_PARAM:             /* Invalid parameter. */
+        printf("ppp_link_status_cb: PPPERR_PARAM\n");
+        break;
+
+    case PPPERR_OPEN:              /* Unable to open PPP session. */
+        printf("ppp_link_status_cb: PPPERR_OPEN\n");
+        break;
+
+    case PPPERR_DEVICE:            /* Invalid I/O device for PPP. */
+        printf("ppp_link_status_cb: PPPERR_DEVICE\n");
+        break;
+
+    case PPPERR_ALLOC:             /* Unable to allocate resources. */
+        printf("ppp_link_status_cb: PPPERR_ALLOC\n");
+        break;
+
+    case PPPERR_USER:              /* User interrupt. */
+        printf("ppp_link_status_cb: PPPERR_USER\n");
+        break;
+
+    case PPPERR_CONNECT:           /* Connection lost. */
+        printf("ppp_link_status_cb: PPPERR_CONNECT\n");
+        break;
+
+    case PPPERR_AUTHFAIL:          /* Failed authentication challenge. */
+        printf("ppp_link_status_cb: PPPERR_AUTHFAIL\n");
+        break;
+
+    case PPPERR_PROTOCOL:          /* Failed to meet protocol. */
+        printf("ppp_link_status_cb: PPPERR_PROTOCOL\n");
+        break;
+
+    case PPPERR_PEERDEAD:          /* Connection timeout. */
+        printf("ppp_link_status_cb: PPPERR_PEERDEAD\n");
+        break;
+
+    case PPPERR_IDLETIMEOUT:       /* Idle Timeout. */
+        printf("ppp_link_status_cb: PPPERR_IDLETIMEOUT\n");
+        break;
+
+    case PPPERR_CONNECTTIME:       /* PPPERR_CONNECTTIME. */
+        printf("ppp_link_status_cb: PPPERR_CONNECTTIME\n");
+        break;
+
+    case PPPERR_LOOPBACK:          /* Connection timeout. */
+        printf("ppp_link_status_cb: PPPERR_LOOPBACK\n");
+        break;
+
+    default:
+        printf("ppp_link_status_cb: unknown errCode %d\n", err_code);
+        break;
+    }
+}
+
+static u32_t
+ppp_output_cb(ppp_pcb *pcb, const void *data, u32_t len, void *ctx)
+{
+  LWIP_UNUSED_ARG(pcb);
+  LWIP_UNUSED_ARG(ctx);
+  return sio_write(ppp_sio, (const u8_t*)data, len);
+}
+
+#if LWIP_NETIF_STATUS_CALLBACK
+static void
+netif_status_callback(struct netif *nif)
+{
+  printf("PPPNETIF: %c%c%d is %s\n", nif->name[0], nif->name[1], nif->num,
+         netif_is_up(nif) ? "UP" : "DOWN");
+#if LWIP_IPV4
+  printf("IPV4: Host at %s ", ip4addr_ntoa(netif_ip4_addr(nif)));
+  printf("mask %s ", ip4addr_ntoa(netif_ip4_netmask(nif)));
+  printf("gateway %s\n", ip4addr_ntoa(netif_ip4_gw(nif)));
+#endif /* LWIP_IPV4 */
+#if LWIP_IPV6
+  printf("IPV6: Host at %s\n", ip6addr_ntoa(netif_ip6_addr(nif, 0)));
+#endif /* LWIP_IPV6 */
+#if LWIP_NETIF_HOSTNAME
+  printf("FQDN: %s\n", netif_get_hostname(nif));
+#endif /* LWIP_NETIF_HOSTNAME */
+}
+#endif /* LWIP_NETIF_STATUS_CALLBACK */
+#endif
+
+void
+pppos_example_init(void)
+{
+#if PPPOS_SUPPORT
+#if PPP_PTY_TEST
+  ppp_sio = sio_open(2);
+#else
+  ppp_sio = sio_open(0);
+#endif
+  if(!ppp_sio)
+  {
+      perror("PPPOS example: Error opening device");
+      return;
+  }
+
+  ppp = pppos_create(&pppos_netif, ppp_output_cb, ppp_link_status_cb, NULL);
+  if (!ppp)
+  {
+      printf("PPPOS example: Could not create PPP control interface");
+      return;
+  }
+
+#ifdef LWIP_PPP_CHAP_TEST
+  ppp_set_auth(ppp, PPPAUTHTYPE_CHAP, "lwip", "mysecret");
+#endif
+
+  ppp_connect(ppp, 0);
+
+#if LWIP_NETIF_STATUS_CALLBACK
+  netif_set_status_callback(&pppos_netif, netif_status_callback);
+#endif /* LWIP_NETIF_STATUS_CALLBACK */
+
+  sys_thread_new("pppos_rx_thread", pppos_rx_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
+#endif /* PPPOS_SUPPORT */
+}