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Diffstat (limited to 'nuttx/net/netdev_foreach.c')
-rw-r--r-- | nuttx/net/netdev_foreach.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/nuttx/net/netdev_foreach.c b/nuttx/net/netdev_foreach.c new file mode 100644 index 000000000..f88444ad8 --- /dev/null +++ b/nuttx/net/netdev_foreach.c @@ -0,0 +1,114 @@ +/**************************************************************************** + * net/netdev_foreach.c + * + * Copyright (C) 2007-2009, 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0 + +#include <debug.h> +#include <nuttx/net/net.h> +#include <nuttx/net/uip/uip-arch.h> + +#include "net_internal.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Priviate Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Function: netdev_foreach + * + * Description: + * Enumerate each registered network device. + * + * NOTE: netdev semaphore held throughout enumeration. + * + * Parameters: + * callback - Will be called for each registered device + * arg - User argument passed to callback() + * + * Returned Value: + * 0:Enumeration completed 1:Enumeration terminated early by callback + * + * Assumptions: + * Called from normal user mode + * + ****************************************************************************/ + +int netdev_foreach(netdev_callback_t callback, void *arg) +{ + struct uip_driver_s *dev; + int ret = 0; + + if (callback) + { + netdev_semtake(); + for (dev = g_netdevices; dev; dev = dev->flink) + { + if (callback(dev, arg) != 0) + { + ret = 1; + break; + } + } + netdev_semgive(); + } + return ret; +} + +#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */ |