pmaports/device/testing/linux-samsung-ms013g/0007-usb_gadget-set-random-rndis-host-MAC-address-to-prev.patch
Luca Weiss e350b00b9b
treewide: chmod -x files (MR 1237)
We don't want executable APKBUILDs, deviceinfo files, etc in pmaports.
Remove the executable bit from those files.

[ci:skip-build]
[ci:skip-vercheck]
2020-05-23 17:29:18 +02:00

43 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/u_ether.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
index 72c4a992594..c0fc0698697 100644
--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -1075,8 +1075,16 @@ int gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN],
"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))
dev_warn(&g->dev,
--
2.21.0