From c64342388e70f381f038e918d4b9f133aa92e696 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Sat, 21 May 2011 18:25:31 +0000
Subject: [PATCH] Add E1000 PIC NIC driver from Yu Qiang

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3638 42af7a65-404d-4744-a932-0658087f49c3
---
 ChangeLog.txt        |  4 ++++
 nshlib/nsh_netcmds.c | 44 ++++++++++++++++++++++++++++++++++++++++++--
 nshlib/nsh_parse.c   |  2 +-
 3 files changed, 47 insertions(+), 3 deletions(-)

diff --git a/ChangeLog.txt b/ChangeLog.txt
index a17488542..495268cb7 100755
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -49,3 +49,7 @@
 	  on initial check-in.
 
 6.4 2011-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
+
+	* nshlib/nsh_netcmds.c: If a network device name and IP address are provided
+	  with the ifconfig command, then this command will now set the network address.
+
diff --git a/nshlib/nsh_netcmds.c b/nshlib/nsh_netcmds.c
index 1bd1e93e4..6e210c020 100644
--- a/nshlib/nsh_netcmds.c
+++ b/nshlib/nsh_netcmds.c
@@ -466,8 +466,48 @@ int cmd_get(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
 #ifndef CONFIG_NSH_DISABLE_IFCONFIG
 int cmd_ifconfig(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
 {
-  netdev_foreach(ifconfig_callback, vtbl);
-  uip_statistics(vtbl);
+  struct in_addr addr;
+  in_addr_t ip;
+
+  /* With one or no arguments, ifconfig simply shows the status of ethernet
+   * device:
+   *
+   *   ifconfig
+   *   ifconfig [nic_name]
+   */
+
+  if (argc <= 2)
+    {
+	  netdev_foreach(ifconfig_callback, vtbl);
+	  uip_statistics(vtbl);
+	  return OK;
+    }
+
+  /* If both the network interface name and an IP address are supplied as
+   * arguments, then ifconfig will set the address of the ethernet device:
+   *
+   *    ifconfig nic_name ip_address
+   */
+
+  /* Set host ip address */
+
+  ip = addr.s_addr = inet_addr(argv[2]);
+  uip_sethostaddr(argv[1], &addr);
+
+  /* Set gateway */
+
+  ip = NTOHL(ip);
+  ip &= ~0x000000ff;
+  ip |= 0x00000001;
+
+  addr.s_addr = HTONL(ip);
+  uip_setdraddr(argv[1], &addr);
+
+  /* Set netmask */
+
+  addr.s_addr = inet_addr("255.255.255.0");
+  uip_setnetmask(argv[1], &addr);
+
   return OK;
 }
 #endif
diff --git a/nshlib/nsh_parse.c b/nshlib/nsh_parse.c
index ef861b2de..f6a778a03 100644
--- a/nshlib/nsh_parse.c
+++ b/nshlib/nsh_parse.c
@@ -191,7 +191,7 @@ static const struct cmdmap_s g_cmdmap[] =
 
 #ifdef CONFIG_NET
 # ifndef CONFIG_NSH_DISABLE_IFCONFIG
-  { "ifconfig", cmd_ifconfig, 1, 1, NULL },
+  { "ifconfig", cmd_ifconfig, 1, 3, "[nic_name [ip]]" },
 # endif
 #endif