extmod/modnetwork: Allow more extensive port-specific customisation.

This allows for a port (e.g. esp8266/esp32) to use extmod/modnetwork.c
and provide the globals dict, rather than just a list of interfaces.

When this is used, the default implementation of `network.route` and the
NIC list is not enabled.

Also splits out the LWIP-specific helpers from modnetwork.c into
network_lwip.c.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/extmod/network_lwip.c b/extmod/network_lwip.c
new file mode 100644
index 0000000000..caa30f6fff
--- /dev/null
+++ b/extmod/network_lwip.c
@@ -0,0 +1,95 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "py/runtime.h"
+#include "py/mphal.h"
+
+#if MICROPY_PY_NETWORK && MICROPY_PY_LWIP
+
+#include "shared/netutils/netutils.h"
+#include "extmod/modnetwork.h"
+
+#include "lwip/init.h"
+
+#if LWIP_VERSION_MAJOR >= 2
+
+#include "lwip/netif.h"
+#include "lwip/timeouts.h"
+#include "lwip/dns.h"
+#include "lwip/dhcp.h"
+
+// Implementations of network methods that can be used by any interface.
+
+mp_obj_t mod_network_nic_ifconfig(struct netif *netif, size_t n_args, const mp_obj_t *args) {
+    if (n_args == 0) {
+        // Get IP addresses
+        const ip_addr_t *dns = dns_getserver(0);
+        mp_obj_t tuple[4] = {
+            netutils_format_ipv4_addr((uint8_t *)&netif->ip_addr, NETUTILS_BIG),
+            netutils_format_ipv4_addr((uint8_t *)&netif->netmask, NETUTILS_BIG),
+            netutils_format_ipv4_addr((uint8_t *)&netif->gw, NETUTILS_BIG),
+            netutils_format_ipv4_addr((uint8_t *)dns, NETUTILS_BIG),
+        };
+        return mp_obj_new_tuple(4, tuple);
+    } else if (args[0] == MP_OBJ_NEW_QSTR(MP_QSTR_dhcp)) {
+        // Start the DHCP client
+        if (dhcp_supplied_address(netif)) {
+            dhcp_renew(netif);
+        } else {
+            dhcp_stop(netif);
+            dhcp_start(netif);
+        }
+
+        // Wait for DHCP to get IP address
+        uint32_t start = mp_hal_ticks_ms();
+        while (!dhcp_supplied_address(netif)) {
+            if (mp_hal_ticks_ms() - start > 10000) {
+                mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("timeout waiting for DHCP to get IP address"));
+            }
+            mp_hal_delay_ms(100);
+        }
+
+        return mp_const_none;
+    } else {
+        // Release and stop any existing DHCP
+        dhcp_release(netif);
+        dhcp_stop(netif);
+        // Set static IP addresses
+        mp_obj_t *items;
+        mp_obj_get_array_fixed_n(args[0], 4, &items);
+        netutils_parse_ipv4_addr(items[0], (uint8_t *)&netif->ip_addr, NETUTILS_BIG);
+        netutils_parse_ipv4_addr(items[1], (uint8_t *)&netif->netmask, NETUTILS_BIG);
+        netutils_parse_ipv4_addr(items[2], (uint8_t *)&netif->gw, NETUTILS_BIG);
+        ip_addr_t dns;
+        netutils_parse_ipv4_addr(items[3], (uint8_t *)&dns, NETUTILS_BIG);
+        dns_setserver(0, &dns);
+        return mp_const_none;
+    }
+}
+
+#endif // LWIP_VERSION_MAJOR >= 2
+
+#endif  // MICROPY_PY_NETWORK && MICROPY_PY_LWIP