[GitHub] [incubator-nuttx-apps] xiaoxiang781216 commented on a change in pull request #944: Add a system tool to get/set hostname

[GitBox <gi...@apache.org>]

xiaoxiang781216 commented on a change in pull request #944:
URL: https://github.com/apache/incubator-nuttx-apps/pull/944#discussion_r776143843



##########
File path: system/hostname/hostname_main.c
##########
@@ -0,0 +1,173 @@
+/****************************************************************************
+ * apps/system/hostname/hostname_main.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <netinet/in.h>
+
+#include <net/if.h>
+#include <arpa/inet.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define CONFIG_HELLO_IPADDR     0xc0a8eacd
+#define CONFIG_HELLO_PORT       81
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* Socket related variables */
+
+static int g_listen_fd;
+
+static struct sockaddr_in g_sa;
+
+int initialize_socket(void)
+{
+  /* Prepare listen address */
+
+  g_sa.sin_family      = AF_INET;
+  g_sa.sin_port        = HTONS(CONFIG_HELLO_PORT);
+  g_sa.sin_addr.s_addr = HTONL(CONFIG_HELLO_IPADDR);
+
+  /* Open listening socket */
+
+  g_listen_fd = socket(g_sa.sin_family, SOCK_DGRAM, 0);
+
+  /* Verify socket creation */
+
+  if (!(g_listen_fd > 0))
+    {
+      return -1;
+    }
+
+  return 0;
+}
+
+int get_phy_id(void)
+{
+  int ret;
+  uint16_t phy_id;
+  struct ifreq ifr;
+
+  /* Prepare ifreq */
+
+  strncpy(ifr.ifr_name, "eth0", IFNAMSIZ);
+
+  ret = ioctl(g_listen_fd, SIOCGMIIPHY, (unsigned long) &ifr);
+
+  printf("call to %s() ", "ioctl");
+
+  if (ret != 0)
+    {
+      printf("failed! (value %d, errno %d)\n", ret, errno);
+      return -1;
+    }
+
+  phy_id = ifr.ifr_mii_phy_id;
+
+  return phy_id;
+}
+
+int get_phy_reg(uint16_t phy_id, uint16_t reg_num, uint16_t *val)
+{
+  int ret;
+  struct ifreq ifr;
+
+  strncpy(ifr.ifr_name, "eth0", IFNAMSIZ);
+
+  ifr.ifr_mii_phy_id = phy_id;
+  ifr.ifr_mii_reg_num = reg_num;
+
+  ret = ioctl(g_listen_fd, SIOCGMIIREG, (unsigned long) &ifr);
+
+  if (ret == OK)
+    {
+      *val = ifr.ifr_mii_val_out;
+    }
+
+  return ret;
+}
+
+int set_phy_reg(uint16_t phy_id, uint16_t reg_num, uint16_t val)

Review comment:
       should we remove all unrelated function and header file?




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