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- /****************************************************************************
- * net/devif/devif_iobsend.c
- *
- * Copyright (C) 2014 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>
- #include <string.h>
- #include <assert.h>
- #include <debug.h>
- #include <nuttx/mm/iob.h>
- #include <nuttx/net/netdev.h>
- #ifdef CONFIG_MM_IOB
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: devif_iob_send
- *
- * Description:
- * Called from socket logic in response to a xmit or poll request from the
- * the network interface driver.
- *
- * This is identical to calling devif_send() except that the data is
- * in an I/O buffer chain, rather than a flat buffer.
- *
- * Assumptions:
- * Called with the network locked.
- *
- ****************************************************************************/
- void devif_iob_send(FAR struct net_driver_s *dev, FAR struct iob_s *iob,
- unsigned int len, unsigned int offset)
- {
- DEBUGASSERT(dev && len > 0 && len < NETDEV_PKTSIZE(dev));
- /* Copy the data from the I/O buffer chain to the device buffer */
- iob_copyout(dev->d_appdata, iob, len, offset);
- dev->d_sndlen = len;
- #ifdef CONFIG_NET_TCP_WRBUFFER_DUMP
- /* Dump the outgoing device buffer */
- lib_dumpbuffer("devif_iob_send", dev->d_appdata, len);
- #endif
- }
- #endif /* CONFIG_MM_IOB */
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