Restructure of direct host network bridge.

[palacios.git] / palacios / include / palacios / vmm_list.h

diff --git a/palacios/include/palacios/vmm_list.h b/palacios/include/palacios/vmm_list.h
index da7a0b2..22f447c 100644 (file)
--- a/palacios/include/palacios/vmm_list.h
+++ b/palacios/include/palacios/vmm_list.h
@@ -1,6 +1,30 @@
+/* Taken From Linux list implementation
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/* 2008, Modifications by Jack Lange <jarusl@cs.northwestern.edu> */
+
+
+
 #ifndef _VMM_LIST_H
 #define _VMM_LIST_H
 
+
+#ifdef __V3VEE__
+
 #include <palacios/vmm_string.h>
 
 #undef offsetof
@@ -12,7 +36,7 @@
         (type *)( (char *)__mptr - offsetof(type,member) );})
 
 
-static inline void prefetch(const void *x) {;}
+static inline void prefetch(const void *x) {const void * foo; foo = x;}
 
 /*
  * These are non-NULL pointers that will result in page faults
@@ -226,6 +250,53 @@ static inline void list_splice_init(struct list_head *list,
        container_of(ptr, type, member)
 
 /**
+ * list_entry - get the struct for the tail entry
+ * @ptr:       the list_head head pointer.
+ * @type:      the type of the struct this is embedded in.
+ * @member:    the name of the list_struct within the struct.
+ */
+#define list_tail_entry(head, type, member) ({ \
+      type * tail = NULL;                      \
+      if ((head)->prev != (head)) {                    \
+       tail = list_entry((head)->prev, type, member);  \
+      }                                                        \
+      tail;                                            \
+})
+
+/**
+ * list_first_entry - get the struct for the first entry
+ * @ptr:       the list_head head pointer.
+ * @type:      the type of the struct this is embedded in.
+ * @member:    the name of the list_struct within the struct.
+ */
+#define list_first_entry(head, type, member)                   \
+({                                                             \
+    type * first = NULL;                                       \
+    if ((head)->next != (head)) {                              \
+       first = list_entry((head)->next, type, member);         \
+    }                                                          \
+    first;                                                     \
+ })
+    
+
+
+/** 
+ * list_next_entry -- get the struct for the next entry in a list
+ * @ptr:  current list entry
+ * @type: type of the struct this is embedded in
+ * @member: name of the list struct within the struct
+ */
+#define list_next_entry(node, type, member)                    \
+    ({                                                         \
+       type * next = NULL;                                     \
+       if ((node)->next != (node)) {                           \
+           next = list_entry((node)->next, type, member);      \
+       }                                                       \
+       next;                                                   \
+    })
+
+
+/**
  * list_for_each       -       iterate over a list
  * @pos:       the &struct list_head to use as a loop counter.
  * @head:      the head for your list.
@@ -525,4 +596,7 @@ static inline void hlist_add_after(struct hlist_node *n,
             pos = n)
 
 
+
+#endif // ! __V3VEE__
+
 #endif