Module Name: src
Committed By: bad
Date: Wed Oct 16 13:11:16 UTC 2019
Modified Files:
src/sys/dev/usb: if_ure.c
Log Message:
allocate a random mac address if on-chip mac is all zeroes.
helps ure(4) on NanoPi R1.
partly from ganbold@freebsd r346052.
XXX pullup-9
To generate a diff of this commit:
cvs rdiff -u -r1.32 -r1.33 src/sys/dev/usb/if_ure.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/usb/if_ure.c
diff -u src/sys/dev/usb/if_ure.c:1.32 src/sys/dev/usb/if_ure.c:1.33
--- src/sys/dev/usb/if_ure.c:1.32 Wed Oct 16 13:02:51 2019
+++ src/sys/dev/usb/if_ure.c Wed Oct 16 13:11:16 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: if_ure.c,v 1.32 2019/10/16 13:02:51 bad Exp $ */
+/* $NetBSD: if_ure.c,v 1.33 2019/10/16 13:11:16 bad Exp $ */
/* $OpenBSD: if_ure.c,v 1.10 2018/11/02 21:32:30 jcs Exp $ */
/*-
@@ -30,7 +30,7 @@
/* RealTek RTL8152/RTL8153 10/100/Gigabit USB Ethernet device */
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ure.c,v 1.32 2019/10/16 13:02:51 bad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ure.c,v 1.33 2019/10/16 13:11:16 bad Exp $");
#ifdef _KERNEL_OPT
#include "opt_usb.h"
@@ -38,6 +38,7 @@ __KERNEL_RCSID(0, "$NetBSD: if_ure.c,v 1
#endif
#include <sys/param.h>
+#include <sys/cprng.h>
#include <net/route.h>
@@ -66,6 +67,9 @@ int uredebug = 0;
#define DPRINTFN(n, x)
#endif
+#define ETHER_IS_ZERO(addr) \
+ (!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]))
+
static const struct usb_devno ure_devs[] = {
{ USB_VENDOR_REALTEK, USB_PRODUCT_REALTEK_RTL8152 },
{ USB_VENDOR_REALTEK, USB_PRODUCT_REALTEK_RTL8153 }
@@ -848,6 +852,7 @@ ure_attach(device_t parent, device_t sel
uint16_t ver;
uint8_t eaddr[8]; /* 2byte padded */
char *devinfop;
+ uint32_t maclo, machi;
aprint_naive("\n");
aprint_normal("\n");
@@ -949,6 +954,16 @@ ure_attach(device_t parent, device_t sel
ure_read_mem(un, URE_PLA_BACKUP, URE_MCU_TYPE_PLA, eaddr,
sizeof(eaddr));
usbnet_unlock(un);
+ if (ETHER_IS_ZERO(eaddr)) {
+ maclo = 0x00f2 | (cprng_strong32() & 0xffff0000);
+ machi = cprng_strong32() & 0xffff;
+ eaddr[0] = maclo & 0xff;
+ eaddr[1] = (maclo >> 8) & 0xff;
+ eaddr[2] = (maclo >> 16) & 0xff;
+ eaddr[3] = (maclo >> 24) & 0xff;
+ eaddr[4] = machi & 0xff;
+ eaddr[5] = (machi >> 8) & 0xff;
+ }
memcpy(un->un_eaddr, eaddr, sizeof un->un_eaddr);
struct ifnet *ifp = usbnet_ifp(un);
