nuttx/net/devif/devif_pktsend.c
chao an 11de08de27 net/devif_send: replace all block send to nonblock mode
Signed-off-by: chao an <anchao@xiaomi.com>
2022-12-08 09:53:15 +01:00

92 lines
2.8 KiB
C

/****************************************************************************
* net/devif/devif_pktsend.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <string.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/net/netdev.h>
#ifdef CONFIG_NET_PKT
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: devif_pkt_send
*
* Description:
* Called from socket logic in order to send a raw packet in response to
* an xmit or poll request from the network interface driver.
*
* This is almost identical to calling devif_send() except that the data to
* be sent is copied into dev->d_buf (vs. dev->d_appdata), since there is
* no header on the data.
*
* Assumptions:
* Called with the network locked.
*
****************************************************************************/
void devif_pkt_send(FAR struct net_driver_s *dev, FAR const void *buf,
unsigned int len)
{
unsigned int limit = NETDEV_PKTSIZE(dev) - NET_LL_HDRLEN(dev);
if (dev == NULL || len == 0 || len > limit)
{
nerr("ERROR: devif_pkt_send fail: %p, sndlen: %u, pktlen: %u\n",
dev, len, limit);
return;
}
iob_update_pktlen(dev->d_iob, 0);
/* Copy the data into the device packet buffer and set the number of
* bytes to send
*/
if (len <= iob_navail(false) * CONFIG_IOB_BUFSIZE)
{
dev->d_sndlen = iob_trycopyin(dev->d_iob, buf, len, 0, false);
}
else
{
dev->d_sndlen = 0;
}
if (dev->d_sndlen != len)
{
netdev_iob_release(dev);
dev->d_sndlen = 0;
}
dev->d_len = dev->d_sndlen;
}
#endif /* CONFIG_NET_PKT */