Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/ipv4/multipath.c b/net/ipv4/multipath.c
new file mode 100644
index 0000000..4e9ca7c
--- /dev/null
+++ b/net/ipv4/multipath.c
@@ -0,0 +1,55 @@
+/* multipath.c: IPV4 multipath algorithm support.
+ *
+ * Copyright (C) 2004, 2005 Einar Lueck <elueck@de.ibm.com>
+ * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+
+#include <net/ip_mp_alg.h>
+
+static DEFINE_SPINLOCK(alg_table_lock);
+struct ip_mp_alg_ops *ip_mp_alg_table[IP_MP_ALG_MAX + 1];
+
+int multipath_alg_register(struct ip_mp_alg_ops *ops, enum ip_mp_alg n)
+{
+ struct ip_mp_alg_ops **slot;
+ int err;
+
+ if (n < IP_MP_ALG_NONE || n > IP_MP_ALG_MAX ||
+ !ops->mp_alg_select_route)
+ return -EINVAL;
+
+ spin_lock(&alg_table_lock);
+ slot = &ip_mp_alg_table[n];
+ if (*slot != NULL) {
+ err = -EBUSY;
+ } else {
+ *slot = ops;
+ err = 0;
+ }
+ spin_unlock(&alg_table_lock);
+
+ return err;
+}
+EXPORT_SYMBOL(multipath_alg_register);
+
+void multipath_alg_unregister(struct ip_mp_alg_ops *ops, enum ip_mp_alg n)
+{
+ struct ip_mp_alg_ops **slot;
+
+ if (n < IP_MP_ALG_NONE || n > IP_MP_ALG_MAX)
+ return;
+
+ spin_lock(&alg_table_lock);
+ slot = &ip_mp_alg_table[n];
+ if (*slot == ops)
+ *slot = NULL;
+ spin_unlock(&alg_table_lock);
+
+ synchronize_net();
+}
+EXPORT_SYMBOL(multipath_alg_unregister);