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-rw-r--r--target/linux/uml/patches-5.10/102-pseudo-random-mac.patch147
1 files changed, 0 insertions, 147 deletions
diff --git a/target/linux/uml/patches-5.10/102-pseudo-random-mac.patch b/target/linux/uml/patches-5.10/102-pseudo-random-mac.patch
deleted file mode 100644
index a4e6500f94..0000000000
--- a/target/linux/uml/patches-5.10/102-pseudo-random-mac.patch
+++ /dev/null
@@ -1,147 +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/drivers/Kconfig
-+++ b/arch/um/drivers/Kconfig
-@@ -146,6 +146,20 @@ config UML_NET
- enable at least one of the following transport options to actually
- make use of UML networking.
-
-+config UML_NET_DETERMINISTIC_MAC
-+ bool "Use deterministic MAC addresses for network interfaces"
-+ default y
-+ depends on UML_NET
-+ select CRYPTO_SHA1
-+ 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 (obsolete)"
- depends on UML_NET
---- a/arch/um/drivers/net_kern.c
-+++ b/arch/um/drivers/net_kern.c
-@@ -25,6 +25,14 @@
- #include <net_kern.h>
- #include <net_user.h>
-
-+#include <crypto/sha.h>
-+#include <crypto/hash.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);
-@@ -274,9 +282,51 @@ static const struct ethtool_ops uml_net_
- .get_ts_info = ethtool_op_get_ts_info,
- };
-
-+#ifdef CONFIG_UML_NET_DETERMINISTIC_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)
-+{
-+ struct ahash_request *desc;
-+ struct crypto_ahash *tfm;
-+ struct scatterlist sg;
-+ char vmif[1024];
-+ int ret;
-+
-+ strcpy (vmif, umid);
-+ strcat (vmif, ifname);
-+
-+ tfm = crypto_alloc_ahash("sha1", 0, CRYPTO_ALG_ASYNC);
-+ if (IS_ERR(tfm))
-+ return -ENOMEM;
-+
-+ desc = ahash_request_alloc(tfm, GFP_KERNEL);
-+ if (!desc) {
-+ ret = -ENOMEM;
-+ goto out;
-+ }
-+
-+ crypto_ahash_clear_flags(tfm, ~0);
-+
-+ sg_init_table(&sg, 1);
-+ sg_set_buf(&sg, vmif, strlen(vmif));
-+
-+ ahash_request_set_crypt(desc, &sg, hash, strlen(vmif));
-+
-+ ret = crypto_ahash_digest(desc);
-+out:
-+ crypto_free_ahash(tfm);
-+
-+ return ret;
-+}
-+
-+#endif
-+
- void uml_net_setup_etheraddr(struct net_device *dev, char *str)
- {
- unsigned char *addr = dev->dev_addr;
-+ u8 hash[SHA1_DIGEST_SIZE];
- char *end;
- int i;
-
-@@ -319,9 +369,26 @@ void uml_net_setup_etheraddr(struct net_
- return;
-
- random:
-+#ifndef CONFIG_UML_NET_DETERMINISTIC_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) < 0) {
-+ 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);
---- a/kernel/umh.c
-+++ b/kernel/umh.c
-@@ -354,12 +354,12 @@ static void helper_unlock(void)
- }
-
- int call_usermodehelper_stdoutpipe(struct subprocess_info *sub_info,
-- struct file **filp)
-+ struct file **filp)
- {
- struct file *f[2];
-
- if (create_pipe_files(f, 0) < 0)
-- return PTR_ERR(f);
-+ return PTR_ERR(f);
-
- sub_info->stdout = f[1];
- *filp = f[0];