src/kernel --> src/

src/net/nic/nic_netif.c

@@ -0,0 +1,77 @@
+#include "lwip/opt.h"
+#include "lwip/def.h"
+#include "lwip/mem.h"
+#include "lwip/pbuf.h"
+#include "lwip/stats.h"
+#include "lwip/snmp.h"
+#include "lwip/ethip6.h"
+#include "lwip/etharp.h"
+#include "netif/etharp.h"
+#include "nic.h"
+#include "network.h"
+#include "kutils.h"
+
+#define IFNAME0 'e'
+#define IFNAME1 'n'
+
+static err_t nic_low_level_output(struct netif *netif, struct pbuf *p) {
+  (void)netif;
+
+  if (p->next == NULL) {
+    if (nic_send_packet(p->payload, p->len) != 0) {
+      return ERR_IF;
+    }
+  } else {
+    u8_t buffer[2048];
+    u16_t copied = pbuf_copy_partial(p, buffer, 2048, 0);
+    if (nic_send_packet(buffer, copied) != 0) {
+      return ERR_IF;
+    }
+  }
+  
+  LINK_STATS_INC(link.xmit);
+  return ERR_OK;
+}
+
+static void nic_low_level_input(struct netif *netif) {
+  u8_t buffer[2048];
+  int len;
+  
+  while ((len = nic_receive_packet(buffer, sizeof(buffer))) > 0) {
+    
+    struct pbuf *p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
+    if (p != NULL) {
+      pbuf_take(p, buffer, len);
+      if (netif->input(p, netif) != ERR_OK) {
+        pbuf_free(p);
+      } else {
+        LINK_STATS_INC(link.recv);
+      }
+    }
+  }
+}
+
+err_t nic_netif_init(struct netif *netif) {
+  netif->name[0] = IFNAME0;
+  netif->name[1] = IFNAME1;
+  netif->output = etharp_output;
+  netif->linkoutput = nic_low_level_output;
+  
+  nic_driver_t* dev = nic_get_driver();
+  if (!dev) return ERR_IF;
+  
+  netif->hwaddr_len = 6;
+  nic_get_mac_address(netif->hwaddr);
+  
+  netif->mtu = 1500;
+  netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
+  
+  // Explicitly set link to up to trigger lwIP state changes
+  netif_set_link_up(netif);
+  
+  return ERR_OK;
+}
+
+void nic_netif_poll(struct netif *netif) {
+  nic_low_level_input(netif);
+}