Diff: features/FEATURE_LWIP/lwip-interface/emac_lwip.c

Revision:

0:f782d9c66c49

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/features/FEATURE_LWIP/lwip-interface/emac_lwip.c	Fri Feb 02 05:42:23 2018 +0000
@@ -0,0 +1,89 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2016 ARM Limited
+ *
+ * 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.
+ */
+
+#if DEVICE_EMAC
+
+#include "emac_api.h"
+#include "emac_stack_mem.h"
+#include "lwip/tcpip.h"
+#include "lwip/tcp.h"
+#include "lwip/ip.h"
+#include "netif/etharp.h"
+
+static err_t emac_lwip_low_level_output(struct netif *netif, struct pbuf *p)
+{
+    emac_interface_t *mac = (emac_interface_t *)netif->state;
+    bool ret = mac->ops.link_out(mac, (emac_stack_mem_t *)p);
+
+    return ret ? ERR_OK : ERR_IF;
+}
+
+static void emac_lwip_input(void *data, emac_stack_t *buf)
+{
+    struct pbuf *p = (struct pbuf *)buf;
+    struct netif *netif = (struct netif *)data;
+
+    /* pass all packets to ethernet_input, which decides what packets it supports */
+    if (netif->input(p, netif) != ERR_OK) {
+        LWIP_DEBUGF(NETIF_DEBUG, ("Emac LWIP: IP input error\n"));
+
+        pbuf_free(p);
+    }
+}
+
+static void emac_lwip_state_change(void *data, bool up)
+{
+    struct netif *netif = (struct netif *)data;
+
+    if (up) {
+        tcpip_callback_with_block((tcpip_callback_fn)netif_set_link_up, netif, 1);
+    } else {
+        tcpip_callback_with_block((tcpip_callback_fn)netif_set_link_down, netif, 1);
+    }
+}
+
+err_t emac_lwip_if_init(struct netif *netif)
+{
+    int err = ERR_OK;
+    emac_interface_t *mac = (emac_interface_t *)netif->state;
+
+    mac->ops.set_link_input_cb(mac, emac_lwip_input, netif);
+    mac->ops.set_link_state_cb(mac, emac_lwip_state_change, netif);
+
+    netif->hwaddr_len = mac->ops.get_hwaddr_size(mac);
+    mac->ops.get_hwaddr(mac, netif->hwaddr);
+
+    netif->mtu = mac->ops.get_mtu_size(mac);
+
+    /* Interface capabilities */
+    netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET | NETIF_FLAG_IGMP;
+
+    mac->ops.get_ifname(mac, netif->name, 2);
+
+#if LWIP_IPV4
+    netif->output = etharp_output;
+#endif /* LWIP_IPV4 */
+
+    netif->linkoutput = emac_lwip_low_level_output;
+
+    if (!mac->ops.power_up(mac)) {
+        err = ERR_IF;
+    }
+
+    return err;
+}
+
+#endif /* DEVICE_EMAC */