99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/****************************************************************************
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* net/devif/devif_cansend.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <string.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/net/netdev.h>
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#if defined(CONFIG_NET_CAN)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Type Declarations
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Public Constant Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Constant Data
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: devif_can_send
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*
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* Description:
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* Called from socket logic in order to send a can packet in response to
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* an xmit or poll request from the network interface driver.
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*
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* This is almost identical to calling devif_send() except that the data to
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* be sent is copied into dev->d_buf (vs. dev->d_appdata), since there is
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* no header on the data.
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*
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* Assumptions:
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* Called with the network locked.
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*
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****************************************************************************/
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void devif_can_send(FAR struct net_driver_s *dev, FAR const void *buf,
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unsigned int len)
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{
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DEBUGASSERT(dev && len > 0 && len < NETDEV_PKTSIZE(dev));
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/* Copy the data into the device packet buffer */
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memcpy(dev->d_buf, buf, len);
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/* Set the number of bytes to send */
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dev->d_len = len;
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dev->d_sndlen = len;
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}
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#endif /* CONFIG_NET_CAN */
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