[PATCH 3/5] export of ip_dev_find as part of Infiniband connection abstraction

["Sean Hefty" <sean.hefty@intel.com>]

I wanted to make doubly sure that this didn't get lost in the patch series, but
ip_dev_find() is re-exported.  The use is shown below.

- Sean

>+int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr)
>+{
>+	struct net_device *dev;
>+	u32 ip = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
>+	int ret;
>+
>+	dev = ip_dev_find(ip);
>+	if (!dev)
>+		return -EADDRNOTAVAIL;
>+
>+	ret = copy_addr(dev_addr, dev, NULL);
>+	dev_put(dev);
>+	return ret;
>+}

{snip}

>+static int addr_resolve_local(struct sockaddr_in *src_in,
>+			      struct sockaddr_in *dst_in,
>+			      struct rdma_dev_addr *addr)
>+{
>+	struct net_device *dev;
>+	u32 src_ip = src_in->sin_addr.s_addr;
>+	u32 dst_ip = dst_in->sin_addr.s_addr;
>+	int ret;
>+
>+	dev = ip_dev_find(dst_ip);
>+	if (!dev)
>+		return -EADDRNOTAVAIL;
>+
>+	if (!src_ip) {
>+		src_in->sin_family = dst_in->sin_family;
>+		src_in->sin_addr.s_addr = dst_ip;
>+		ret = copy_addr(addr, dev, dev->dev_addr);
>+	} else {
>+		ret = rdma_translate_ip((struct sockaddr *)src_in, addr);
>+		if (!ret)
>+			memcpy(addr->dst_dev_addr, dev->dev_addr, MAX_ADDR_LEN);
>+	}
>+
>+	dev_put(dev);
>+	return ret;
>+}

{snip}

>diff -uprN -X linux-2.6.git/Documentation/dontdiff
>linux-2.6.git/net/ipv4/fib_frontend.c
>linux-2.6.ib/net/ipv4/fib_frontend.c
>--- linux-2.6.git/net/ipv4/fib_frontend.c	2006-01-16 10:28:29.000000000
-0800
>+++ linux-2.6.ib/net/ipv4/fib_frontend.c	2006-01-16 16:14:24.000000000
-0800
>@@ -666,4 +666,5 @@ void __init ip_fib_init(void)
> }
>
> EXPORT_SYMBOL(inet_addr_type);
>+EXPORT_SYMBOL(ip_dev_find);
> EXPORT_SYMBOL(ip_rt_ioctl);