shill: First step for rtnl code -- device discovery

Add device_info object and add it to the manager.  Once started,
this will perform rtnl enumeration.  Current tests just assert
that each enumeration completes successfully, but since our code
does not yet store any information based on what it sees, this
cannot be tested yet.

BUG=chromium-os:12933
TEST=New unit tests added

Change-Id: Ie1958222d9831c6117d0ace127857340a11b0bb1
Reviewed-on: http://gerrit.chromium.org/gerrit/655
Reviewed-by: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/device_info.h b/device_info.h
new file mode 100644
index 00000000..5b6b18d3
--- /dev/null
+++ b/device_info.h
@@ -0,0 +1,48 @@
+// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SHILL_DEVICE_INFO_
+#define SHILL_DEVICE_INFO_
+
+#include <base/hash_tables.h>
+#include <base/scoped_ptr.h>
+
+#include "shill/shill_event.h"
+
+namespace shill {
+
+class DeviceInfo {
+ public:
+  DeviceInfo(EventDispatcher *dispatcher);
+  ~DeviceInfo();
+  void Start();
+  void Stop();
+
+ private:
+  void ParseRTNL(InputData *data);
+  void NextRequest(uint32_t seq);
+  void LinkMsg(unsigned char *buf, bool del);
+  void AddrMsg(unsigned char *buf, bool del);
+  void RouteMsg(unsigned char *buf, bool del);
+
+  bool running_;
+  EventDispatcher *dispatcher_;
+  ClassCallback<DeviceInfo, InputData *> rtnl_callback_;
+  int rtnl_socket_;
+  base::hash_map<int, Device *> devices_;
+  scoped_ptr<IOInputHandler> rtnl_handler_;
+  int request_flags_;
+  uint32_t request_sequence_;
+  friend class ShillDaemonTest;
+};
+
+enum {
+  REQUEST_LINK = 1,
+  REQUEST_ADDR = 2,
+  REQUEST_ROUTE = 4
+};
+
+}  // namespace shill
+
+#endif  // SHILL_DEVICE_INFO_