1 files changed, 0 insertions, 124 deletions
diff --git a/target/linux/uml/patches-4.4/102-pseudo-random-mac.patch b/target/linux/uml/patches-4.4/102-pseudo-random-mac.patch
deleted file mode 100644
index fc54f603c0..0000000000
--- a/target/linux/uml/patches-4.4/102-pseudo-random-mac.patch
+++ /dev/null
@@ -1,124 +0,0 @@
-===============================================================================
-
-This patch makes MAC addresses of network interfaces predictable. In
-particular, it adds a small routine that computes MAC addresses of based on
-a SHA1 hash of the virtual machine name and interface ID.
-
-TECHNICAL INFORMATION:
-
-Applies to vanilla kernel 3.9.4.
-
-===============================================================================
---- a/arch/um/Kconfig.net
-+++ b/arch/um/Kconfig.net
-@@ -21,6 +21,19 @@ config UML_NET
-         enable at least one of the following transport options to actually
-         make use of UML networking.
- 
-+config UML_NET_RANDOM_MAC
-+	bool "Use random MAC addresses for network interfaces"
-+	default n
-+	depends on UML_NET
-+	help
-+        Virtual network devices inside a User-Mode Linux instance must be
-+        assigned a MAC (Ethernet) address. If none is specified on the UML
-+        command line, one must be automatically computed. If this option is
-+        enabled, a randomly generated address is used. Otherwise, if this
-+        option is disabled, the address is generated from a SHA1 hash of
-+        the umid of the UML instance and the interface name. The latter choice
-+        is useful to make MAC addresses predictable.
-+
- config UML_NET_ETHERTAP
- 	bool "Ethertap transport"
- 	depends on UML_NET
---- a/arch/um/drivers/net_kern.c
-+++ b/arch/um/drivers/net_kern.c
-@@ -25,6 +25,13 @@
- #include <net_kern.h>
- #include <net_user.h>
- 
-+#include <crypto/sha.h>
-+#include <linux/string.h>
-+#include <linux/crypto.h>
-+#include <linux/err.h>
-+#include <linux/scatterlist.h>
-+#include "os.h"
-+
- #define DRIVER_NAME "uml-netdev"
- 
- static DEFINE_SPINLOCK(opened_lock);
-@@ -295,11 +302,47 @@ static void uml_net_user_timer_expire(un
- #endif
- }
- 
-+#ifndef CONFIG_UML_NET_RANDOM_MAC
-+
-+/* Compute a SHA1 hash of the UML instance's id and
-+ *  * an interface name. */
-+static int compute_hash(const char *umid, const char *ifname, char *hash) {
-+	char vmif[1024];
-+	struct scatterlist sg;
-+	struct crypto_hash *tfm;
-+	struct hash_desc desc;
-+
-+	strcpy (vmif, umid);
-+	strcat (vmif, ifname);
-+
-+	tfm = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
-+	if (IS_ERR(tfm))
-+		return 1;
-+
-+	desc.tfm = tfm;
-+	desc.flags = 0;
-+
-+	sg_init_table(&sg, 1);
-+	sg_set_buf(&sg, vmif, strlen(vmif));
-+
-+	if (crypto_hash_digest(&desc, &sg, strlen(vmif), hash)) {
-+		crypto_free_hash(tfm);
-+		return 1;
-+	}
-+
-+	crypto_free_hash(tfm);
-+
-+	return 0;
-+}
-+
-+#endif
-+
- static void setup_etheraddr(struct net_device *dev, char *str)
- {
- 	unsigned char *addr = dev->dev_addr;
- 	char *end;
- 	int i;
-+	u8 hash[SHA1_DIGEST_SIZE];
- 
- 	if (str == NULL)
- 		goto random;
-@@ -340,9 +383,26 @@ static void setup_etheraddr(struct net_d
- 	return;
- 
- random:
-+#ifdef CONFIG_UML_NET_RANDOM_MAC
- 	printk(KERN_INFO
- 	       "Choosing a random ethernet address for device %s\n", dev->name);
- 	eth_hw_addr_random(dev);
-+#else
-+	printk(KERN_INFO
-+	       "Computing a digest to use as ethernet address for device %s\n", dev->name);
-+	if (compute_hash(get_umid(), dev->name, hash)) {
-+		printk(KERN_WARNING
-+		       "Could not compute digest to use as ethernet address for device %s. "
-+		       "Using random address instead.\n", dev->name);
-+		random_ether_addr(addr);
-+	}
-+	else {
-+		for (i=0; i < 6; i++)
-+			addr[i] = (hash[i] + hash[i+6]) % 0x100;
-+	}
-+	addr [0] &= 0xfe; /* clear multicast bit */
-+	addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
-+#endif
- }
- 
- static DEFINE_SPINLOCK(devices_lock);