Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 62 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/lists.h b/pfinet/linux-src/include/linux/lists.h
new file mode 100644
index 00000000..6a2240a2
--- /dev/null
+++ b/pfinet/linux-src/include/linux/lists.h
@@ -0,0 +1,62 @@
+/*
+ * lists.h:  Simple list macros for Linux
+ */
+
+#define DLNODE(ptype)			       	       	       	\
+	struct {			 			\
+		ptype * dl_prev;	 			\
+		ptype * dl_next;	 			\
+	}
+
+#define DNODE_SINGLE(node) {(node),(node)}
+#define DNODE_NULL {0,0}
+
+#define DLIST_INIT(listnam)	                                \
+	(listnam).dl_prev = &(listnam);				\
+	(listnam).dl_next = &(listnam);
+
+#define DLIST_NEXT(listnam)	listnam.dl_next
+#define DLIST_PREV(listnam)	listnam.dl_prev
+
+#define DLIST_INSERT_AFTER(node, new, listnam)	do {		\
+	(new)->listnam.dl_prev = (node);			\
+	(new)->listnam.dl_next = (node)->listnam.dl_next;	\
+	(node)->listnam.dl_next->listnam.dl_prev = (new);	\
+	(node)->listnam.dl_next = (new);			\
+	} while (0)
+
+#define DLIST_INSERT_BEFORE(node, new, listnam)	do {		\
+	(new)->listnam.dl_next = (node);			\
+	(new)->listnam.dl_prev = (node)->listnam.dl_prev;	\
+	(node)->listnam.dl_prev->listnam.dl_next = (new);	\
+	(node)->listnam.dl_prev = (new);			\
+	} while (0)
+
+#define DLIST_DELETE(node, listnam)	do {		\
+	node->listnam.dl_prev->listnam.dl_next =		\
+		node->listnam.dl_next;				\
+	node->listnam.dl_next->listnam.dl_prev =		\
+		node->listnam.dl_prev;				\
+	} while (0)
+
+/*
+ * queue-style operations, which have a head and tail
+ */
+
+#define QUEUE_INIT(head, listnam, ptype)				\
+	(head)->listnam.dl_prev = (head)->listnam.dl_next = (ptype)(head);
+
+#define QUEUE_FIRST(head, listnam) (head)->DLIST_NEXT(listnam)
+#define QUEUE_LAST(head, listnam) (head)->DLIST_PREV(listnam)
+#define QUEUE_EMPTY(head, listnam) \
+	((QUEUE_FIRST(head, listnam) == QUEUE_LAST(head, listnam)) && \
+	 ((u_long)QUEUE_FIRST(head, listnam) == (u_long)head)) 
+
+#define QUEUE_ENTER(head, new, listnam, ptype) do {		\
+	(new)->listnam.dl_prev = (ptype)(head);			\
+	(new)->listnam.dl_next = (head)->listnam.dl_next;	\
+	(head)->listnam.dl_next->listnam.dl_prev = (new);	\
+	(head)->listnam.dl_next = (new);			\
+	} while (0)
+
+#define QUEUE_REMOVE(head, node, listnam) DLIST_DELETE(node, listnam)