diff options
Diffstat (limited to 'nuttx/net/iob')
-rw-r--r-- | nuttx/net/iob/Make.defs | 4 | ||||
-rw-r--r-- | nuttx/net/iob/iob_freechain.c | 101 | ||||
-rw-r--r-- | nuttx/net/iob/iob_freeq.c | 2 |
3 files changed, 104 insertions, 3 deletions
diff --git a/nuttx/net/iob/Make.defs b/nuttx/net/iob/Make.defs index 4f9a52c23..f70b7821a 100644 --- a/nuttx/net/iob/Make.defs +++ b/nuttx/net/iob/Make.defs @@ -41,8 +41,8 @@ ifeq ($(CONFIG_NET_IOB),y) # Include IOB src files NET_CSRCS += iob_alloc.c iob_clone.c iob_concat.c iob_copyin.c iob_copyout.c -NET_CSRCS += iob_free.c iob_freeq.c iob_initialize.c iob_pack.c -NET_CSRCS += iob_trimhead.c iob_trimtail.c +NET_CSRCS += iob_free.c iob_freechain.c iob_freeq.c iob_initialize.c +NET_CSRCS += iob_pack.c iob_trimhead.c iob_trimtail.c # Include iob build support diff --git a/nuttx/net/iob/iob_freechain.c b/nuttx/net/iob/iob_freechain.c new file mode 100644 index 000000000..bc66365f7 --- /dev/null +++ b/nuttx/net/iob/iob_freechain.c @@ -0,0 +1,101 @@ +/**************************************************************************** + * net/iob/iob_freechain.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 <queue.h> + +#include <nuttx/net/iob.h> + +#include "iob.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: iob_freechain + * + * Description: + * Free an entire buffer chain, starting at the beginning of the I/O + * buffer chain + * + ****************************************************************************/ + +void iob_freechain(FAR struct iob_s *iob) +{ + FAR sq_entry_t *first = (sq_entry_t *)&iob->io_link; + FAR sq_entry_t *last; + + /* Find the last entry in the I/O buffer list */ + + for (last = first; last->flink; last = last->flink); + + /* If the free list is empty, then just move the I/O buffer chain to the + * free list. Otherwise, append the I/O buffer chain to the end of the + * free list. + */ + + if (g_iob_freelist.tail) + { + g_iob_freelist.tail->flink = first; + } + else + { + g_iob_freelist.head = first; + } + + g_iob_freelist.tail = last; +} diff --git a/nuttx/net/iob/iob_freeq.c b/nuttx/net/iob/iob_freeq.c index 5d99c38f6..12eb8021e 100644 --- a/nuttx/net/iob/iob_freeq.c +++ b/nuttx/net/iob/iob_freeq.c @@ -69,7 +69,7 @@ * Name: iob_freeq * * Description: - * Free an entire buffer chain + * Free an entire buffer chain, starting at a queue head * ****************************************************************************/ |