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Diffstat (limited to 'packages/linux/gumstix-kernel-2.6.21/serial-ether-addr.patch')
-rw-r--r--packages/linux/gumstix-kernel-2.6.21/serial-ether-addr.patch62
1 files changed, 62 insertions, 0 deletions
diff --git a/packages/linux/gumstix-kernel-2.6.21/serial-ether-addr.patch b/packages/linux/gumstix-kernel-2.6.21/serial-ether-addr.patch
new file mode 100644
index 0000000000..3161472e90
--- /dev/null
+++ b/packages/linux/gumstix-kernel-2.6.21/serial-ether-addr.patch
@@ -0,0 +1,62 @@
+Index: linux-2.6.21gum/drivers/usb/gadget/ether.c
+===================================================================
+--- linux-2.6.21gum.orig/drivers/usb/gadget/ether.c
++++ linux-2.6.21gum/drivers/usb/gadget/ether.c
+@@ -2249,6 +2249,38 @@ static u8 __devinit nibble (unsigned cha
+ return 0;
+ }
+
++static inline unsigned int is_gumstix_oui(u8 *addr)
++{
++ return (addr[0] == 0x00 && addr[1] == 0x15 && addr[2] == 0xC9);
++}
++
++/**
++ * gen_serial_ether_addr - Generate software assigned Ethernet address
++ * based on the system_serial number
++ * @addr: Pointer to a six-byte array containing the Ethernet address
++ *
++ * Generate an Ethernet address (MAC) that is not multicast
++ * and has the local assigned bit set, keyed on the system_serial
++ */
++static inline void gen_serial_ether_addr(u8 *addr)
++{
++ static u8 ether_serial_digit = 0;
++ addr [0] = system_serial_high >> 8;
++ addr [1] = system_serial_high;
++ addr [2] = system_serial_low >> 24;
++ addr [3] = system_serial_low >> 16;
++ addr [4] = system_serial_low >> 8;
++ addr [5] = (system_serial_low & 0xc0) | /* top bits are from system serial */
++ (2 << 4) | /* 2 bits identify interface type 1=ether, 2=usb, 3&4 undef */
++ ((ether_serial_digit++) & 0x0f); /* 15 possible interfaces of each type */
++
++ if(!is_gumstix_oui(addr))
++ {
++ addr [0] &= 0xfe; /* clear multicast bit */
++ addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
++ }
++}
++
+ static int __devinit get_ether_addr(const char *str, u8 *dev_addr)
+ {
+ if (str) {
+@@ -2266,8 +2298,16 @@ static int __devinit get_ether_addr(cons
+ if (is_valid_ether_addr (dev_addr))
+ return 0;
+ }
+- random_ether_addr(dev_addr);
+- return 1;
++ if(system_serial_high | system_serial_low)
++ {
++ gen_serial_ether_addr(dev_addr);
++ return 0;
++ }
++ else
++ {
++ random_ether_addr(dev_addr);
++ return 1;
++ }
+ }
+
+ static int __devinit