Inital import

[l4.git] / l4 / pkg / linux-26-headers / include / net / inetpeer.h

diff --git a/l4/pkg/linux-26-headers/include/net/inetpeer.h b/l4/pkg/linux-26-headers/include/net/inetpeer.h
new file mode 100644 (file)
index 0000000..15e1f8f
--- /dev/null
+++ b/l4/pkg/linux-26-headers/include/net/inetpeer.h
@@ -0,0 +1,53 @@
+/*
+ *             INETPEER - A storage for permanent information about peers
+ *
+ *  Authors:   Andrey V. Savochkin <saw@msu.ru>
+ */
+
+#ifndef _NET_INETPEER_H
+#define _NET_INETPEER_H
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+
+struct inet_peer
+{
+       /* group together avl_left,avl_right,v4daddr to speedup lookups */
+       struct inet_peer        *avl_left, *avl_right;
+       __be32                  v4daddr;        /* peer's address */
+       __u16                   avl_height;
+       __u16                   ip_id_count;    /* IP ID for the next packet */
+       struct list_head        unused;
+       __u32                   dtime;          /* the time of last use of not
+                                                * referenced entries */
+       atomic_t                refcnt;
+       atomic_t                rid;            /* Frag reception counter */
+       __u32                   tcp_ts;
+       unsigned long           tcp_ts_stamp;
+};
+
+void                   inet_initpeers(void) __init;
+
+/* can be called with or without local BH being disabled */
+struct inet_peer       *inet_getpeer(__be32 daddr, int create);
+
+/* can be called from BH context or outside */
+extern void inet_putpeer(struct inet_peer *p);
+
+extern spinlock_t inet_peer_idlock;
+/* can be called with or without local BH being disabled */
+static inline __u16    inet_getid(struct inet_peer *p, int more)
+{
+       __u16 id;
+
+       spin_lock_bh(&inet_peer_idlock);
+       id = p->ip_id_count;
+       p->ip_id_count += 1 + more;
+       spin_unlock_bh(&inet_peer_idlock);
+       return id;
+}
+
+#endif /* _NET_INETPEER_H */