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Diffstat (limited to 'nuttx/net/uip/uip_igmpgroup.c')
-rw-r--r--nuttx/net/uip/uip_igmpgroup.c391
1 files changed, 0 insertions, 391 deletions
diff --git a/nuttx/net/uip/uip_igmpgroup.c b/nuttx/net/uip/uip_igmpgroup.c
deleted file mode 100644
index b92db5476..000000000
--- a/nuttx/net/uip/uip_igmpgroup.c
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@@ -1,391 +0,0 @@
-/****************************************************************************
- * net/uip/uip_igmpgroup.c
- * IGMP group data structure management logic
- *
- * Copyright (C) 2010 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * The NuttX implementation of IGMP was inspired by the IGMP add-on for the
- * lwIP TCP/IP stack by Steve Reynolds:
- *
- * Copyright (c) 2002 CITEL Technologies Ltd.
- * All rights reserved.
- *
- * 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 of CITEL Technologies Ltd 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 CITEL TECHNOLOGIES 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 CITEL TECHNOLOGIES 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 <nuttx/compiler.h>
-
-#include <stdlib.h>
-#include <string.h>
-#include <wdog.h>
-#include <queue.h>
-#include <debug.h>
-
-#include <arch/irq.h>
-#include <nuttx/arch.h>
-#include <nuttx/kmalloc.h>
-
-#include <nuttx/net/uip/uip.h>
-#include <nuttx/net/uip/uip-igmp.h>
-
-#include "uip_internal.h"
-
-#ifdef CONFIG_NET_IGMP
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/* Configuration ************************************************************/
-
-#ifdef CONFIG_NET_IPv6
-# error "IGMP for IPv6 not supported"
-#endif
-
-#ifndef CONFIG_PREALLOC_IGMPGROUPS
-# define CONFIG_PREALLOC_IGMPGROUPS 4
-#endif
-
-/* Debug ********************************************************************/
-
-#undef IGMP_GRPDEBUG /* Define to enable detailed IGMP group debug */
-
-#ifndef CONFIG_NET_IGMP
-# undef IGMP_GRPDEBUG
-#endif
-
-#ifdef CONFIG_CPP_HAVE_VARARGS
-# ifdef IGMP_GRPDEBUG
-# define grpdbg(format, arg...) ndbg(format, ##arg)
-# define grplldbg(format, arg...) nlldbg(format, ##arg)
-# define grpvdbg(format, arg...) nvdbg(format, ##arg)
-# define grpllvdbg(format, arg...) nllvdbg(format, ##arg)
-# else
-# define grpdbg(x...)
-# define grplldbg(x...)
-# define grpvdbg(x...)
-# define grpllvdbg(x...)
-# endif
-#else
-# ifdef IGMP_GRPDEBUG
-# define grpdbg ndbg
-# define grplldbg nlldbg
-# define grpvdbg nvdbg
-# define grpllvdbg nllvdbg
-# else
-# define grpdbg (void)
-# define grplldbg (void)
-# define grpvdbg (void)
-# define grpllvdbg (void)
-# endif
-#endif
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/* malloc() cannot be called from an interrupt handler. To work around this,
- * a small number of IGMP groups are preallocated just for use in interrupt
- * handling logic.
- */
-
-#if CONFIG_PREALLOC_IGMPGROUPS > 0
-static struct igmp_group_s g_preallocgrps[CONFIG_PREALLOC_IGMPGROUPS];
-static FAR sq_queue_t g_freelist;
-#endif
-
-/****************************************************************************
- * Public Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: uip_grpalloc
- *
- * Description:
- * Allocate a new group from heap memory.
- *
- * Assumptions:
- * Calls malloc and so cannot be called from an interrupt handler.
- *
- ****************************************************************************/
-
-static inline FAR struct igmp_group_s *uip_grpheapalloc(void)
-{
- return (FAR struct igmp_group_s *)zalloc(sizeof(struct igmp_group_s));
-}
-
-/****************************************************************************
- * Name: uip_grpprealloc
- *
- * Description:
- * Allocate a new group from the pre-allocated groups.
- *
- * Assumptions:
- * This function should only be called from an interrupt handler (or with
- * interrupts disabled).
- *
- ****************************************************************************/
-
-#if CONFIG_PREALLOC_IGMPGROUPS > 0
-static inline FAR struct igmp_group_s *uip_grpprealloc(void)
-{
- FAR struct igmp_group_s *group = (FAR struct igmp_group_s *)sq_remfirst(&g_freelist);
- if (group)
- {
- memset(group, 0, sizeof(struct igmp_group_s));
- group->flags = IGMP_PREALLOCATED;
- }
- return group;
-}
-#endif
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: uip_grpinit
- *
- * Description:
- * One-time initialization of group data.
- *
- * Assumptions:
- * Called only during early boot phases (pre-multitasking).
- *
- ****************************************************************************/
-
-void uip_grpinit(void)
-{
- FAR struct igmp_group_s *group;
- int i;
-
- grplldbg("Initializing\n");
-
-#if CONFIG_PREALLOC_IGMPGROUPS > 0
- for (i = 0; i < CONFIG_PREALLOC_IGMPGROUPS; i++)
- {
- group = &g_preallocgrps[i];
- sq_addfirst((FAR sq_entry_t *)group, &g_freelist);
- }
-#endif
-}
-
-/****************************************************************************
- * Name: uip_grpalloc
- *
- * Description:
- * Allocate a new group from heap memory.
- *
- * Assumptions:
- * May be called from either user or interrupt level processing.
- *
- ****************************************************************************/
-
-FAR struct igmp_group_s *uip_grpalloc(FAR struct uip_driver_s *dev,
- FAR const uip_ipaddr_t *addr)
-{
- FAR struct igmp_group_s *group;
- uip_lock_t flags;
-
- nllvdbg("addr: %08x dev: %p\n", *addr, dev);
- if (up_interrupt_context())
- {
-#if CONFIG_PREALLOC_IGMPGROUPS > 0
- grplldbg("Use a pre-allocated group entry\n");
- group = uip_grpprealloc();
-#else
- grplldbg("Cannot allocate from interrupt handler\n");
- group = NULL;
-#endif
- }
- else
- {
- grplldbg("Allocate from the heap\n");
- group = uip_grpheapalloc();
- }
- grplldbg("group: %p\n", group);
-
- /* Check if we succesfully allocated a group structure */
-
- if (group)
- {
- /* Initialize the non-zero elements of the group structure */
-
- uip_ipaddr_copy(group->grpaddr, *addr);
- sem_init(&group->sem, 0, 0);
-
- /* Initialize the group timer (but don't start it yet) */
-
- group->wdog = wd_create();
- DEBUGASSERT(group->wdog);
-
- /* Interrupts must be disabled in order to modify the group list */
-
- flags = uip_lock();
-
- /* Add the group structure to the list in the device structure */
-
- sq_addfirst((FAR sq_entry_t*)group, &dev->grplist);
- uip_unlock(flags);
- }
- return group;
-}
-
-/****************************************************************************
- * Name: uip_grpfind
- *
- * Description:
- * Find an existing group.
- *
- * Assumptions:
- * May be called from either user or interrupt level processing.
- *
- ****************************************************************************/
-
-FAR struct igmp_group_s *uip_grpfind(FAR struct uip_driver_s *dev,
- FAR const uip_ipaddr_t *addr)
-{
- FAR struct igmp_group_s *group;
- uip_lock_t flags;
-
- grplldbg("Searching for addr %08x\n", (int)*addr);
-
- /* We must disable interrupts because we don't which context we were
- * called from.
- */
-
- flags = uip_lock();
- for (group = (FAR struct igmp_group_s *)dev->grplist.head;
- group;
- group = group->next)
- {
- grplldbg("Compare: %08x vs. %08x\n", group->grpaddr, *addr);
- if (uip_ipaddr_cmp(group->grpaddr, *addr))
- {
- grplldbg("Match!\n");
- break;
- }
- }
- uip_unlock(flags);
- return group;
-}
-
-/****************************************************************************
- * Name: uip_grpallocfind
- *
- * Description:
- * Find an existing group. If not found, create a new group for the
- * address.
- *
- * Assumptions:
- * May be called from either user or interrupt level processing.
- *
- ****************************************************************************/
-
-FAR struct igmp_group_s *uip_grpallocfind(FAR struct uip_driver_s *dev,
- FAR const uip_ipaddr_t *addr)
-{
- FAR struct igmp_group_s *group = uip_grpfind(dev, addr);
-
- grplldbg("group: %p addr: %08x\n", group, (int)*addr);
- if (!group)
- {
- group = uip_grpalloc(dev, addr);
- }
- grplldbg("group: %p\n", group);
- return group;
-}
-
-/****************************************************************************
- * Name: uip_grpfree
- *
- * Description:
- * Release a previously allocated group.
- *
- * Assumptions:
- * May be called from either user or interrupt level processing.
- *
- ****************************************************************************/
-
-void uip_grpfree(FAR struct uip_driver_s *dev, FAR struct igmp_group_s *group)
-{
- uip_lock_t flags;
-
- grplldbg("Free: %p flags: %02x\n", group, group->flags);
-
- /* Cancel the wdog */
-
- flags = uip_lock();
- wd_cancel(group->wdog);
-
- /* Remove the group structure from the group list in the device structure */
-
- sq_rem((FAR sq_entry_t*)group, &dev->grplist);
-
- /* Destroy the wait semapore */
-
- (void)sem_destroy(&group->sem);
-
- /* Destroy the wdog */
-
- wd_delete(group->wdog);
-
- /* Then release the group structure resources. Check first if this is one
- * of the pre-allocated group structures that we will retain in a free list.
- */
-
-#if CONFIG_PREALLOC_IGMPGROUPS > 0
- if (IS_PREALLOCATED(group->flags))
- {
- grplldbg("Put back on free list\n");
- sq_addlast((FAR sq_entry_t*)group, &g_freelist);
- uip_unlock(flags);
- }
- else
-#endif
- {
- /* No.. deallocate the group structure. Use sched_free() just in case
- * this function is executing within an interrupt handler.
- */
-
- uip_unlock(flags);
- grplldbg("Call sched_free()\n");
- sched_free(group);
- }
-}
-
-#endif /* CONFIG_NET_IGMP */
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