1 files changed, 391 insertions, 391 deletions
diff --git a/nuttx/net/uip/uip_igmpgroup.c b/nuttx/net/uip/uip_igmpgroup.c
index 076e990f9..220de047e 100755
--- a/nuttx/net/uip/uip_igmpgroup.c
+++ b/nuttx/net/uip/uip_igmpgroup.c
@@ -1,391 +1,391 @@
-/****************************************************************************
- * net/uip/uip_igmpgroup.c
- * IGMP group data structure management logic
- *
- *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * 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 <net/uip/uip.h>
-#include <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 */
+/****************************************************************************
+ * net/uip/uip_igmpgroup.c
+ * IGMP group data structure management logic
+ *
+ *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 */