44 lines
1.6 KiB
Diff
44 lines
1.6 KiB
Diff
From 2e32a401ea5df22ab899f4da3e5e1b448b2df51a Mon Sep 17 00:00:00 2001
|
|
From: Alexey Min <alexey.min@gmail.com>
|
|
Date: Thu, 7 Mar 2019 17:25:48 +0300
|
|
Subject: [PATCH 5/6] usb_gadget: set random rndis host MAC address to prevent
|
|
zero address
|
|
|
|
This fixes zero host MAC:
|
|
|
|
rndis0: MAC f6:45:91:9b:4e:43
|
|
rndis0: HOST MAC 00:00:00:00:00:00
|
|
|
|
and allows devive to automatically obtain IP addrest on PC host side
|
|
zero MAC address prevented interface from autoconfiguring
|
|
---
|
|
drivers/usb/gadget/function/u_ether.c | 12 ++++++++++--
|
|
1 file changed, 10 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
|
|
index bf8b64d904c..9ce3ab6de34 100644
|
|
--- a/drivers/usb/gadget/function/u_ether.c
|
|
+++ b/drivers/usb/gadget/function/u_ether.c
|
|
@@ -1263,8 +1263,16 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN],
|
|
dev_warn(&g->dev,
|
|
"using random %s ethernet address\n", "self");
|
|
#ifdef CONFIG_USB_ANDROID_SAMSUNG_COMPOSITE
|
|
- memcpy(dev->host_mac, ethaddr, ETH_ALEN);
|
|
- printk(KERN_DEBUG "usb: set unique host mac\n");
|
|
+ if ((ethaddr[0] == 0x00) && (ethaddr[1] == 0x00) &&
|
|
+ (ethaddr[2] == 0x00) && (ethaddr[3] == 0x00) &&
|
|
+ (ethaddr[4] == 0x00) && (ethaddr[5] == 0x00)) {
|
|
+ printk(KERN_DEBUG "%s: no unique host MAC was set, generate random\n", __func__);
|
|
+ /* we can use random_ether_addr() from include/linux/etherdevice.h */
|
|
+ random_ether_addr(ethaddr);
|
|
+ } else {
|
|
+ printk(KERN_DEBUG "%s: set unique host mac\n", __func__);
|
|
+ }
|
|
+ memcpy(dev->host_mac, ethaddr, ETH_ALEN);
|
|
|
|
#else
|
|
if (get_ether_addr(host_addr, dev->host_mac))
|
|
|
|
--
|
|
2.21.0
|
|
|