diff options
Diffstat (limited to 'nuttx/net/uip/uip_pktsend.c')
-rw-r--r-- | nuttx/net/uip/uip_pktsend.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/nuttx/net/uip/uip_pktsend.c b/nuttx/net/uip/uip_pktsend.c new file mode 100644 index 000000000..c9aa2bfc9 --- /dev/null +++ b/nuttx/net/uip/uip_pktsend.c @@ -0,0 +1,115 @@ +/**************************************************************************** + * net/uip/uip_pktsend.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/net/uip/uip.h> +#include <nuttx/net/uip/uip-arch.h> + +#ifdef CONFIG_NET_PKT + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Type Declarations + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Constant Data + ****************************************************************************/ + +/**************************************************************************** + * Global Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Constant Data + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: uip_pktsend + * + * Description: + * Called from socket logic in order to send a raw packet in response to + * an xmit or poll request from the the network interface driver. + * + * This is almost identical to calling uip_send() except that the data to + * be sent is copied into dev->d_buf (vs. dev->d_snddata), since there is + * no header on the data. + * + * Assumptions: + * Called from the interrupt level or, at a minimum, with interrupts + * disabled. + * + ****************************************************************************/ + +void uip_pktsend(FAR struct uip_driver_s *dev, FAR const void *buf, + unsigned int len) +{ + DEBUGASSERT(dev && len > 0 && len < CONFIG_NET_BUFSIZE); + + /* Copy the data into the device packet buffer */ + + memcpy(dev->d_buf, buf, len); + + /* Set the number of bytes to send */ + + dev->d_len = len; + dev->d_sndlen = len; +} + +#endif /* CONFIG_NET_PKT */ |