mirror of
https://github.com/openwrt/openwrt.git
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61 lines
1.9 KiB
Diff
61 lines
1.9 KiB
Diff
--- a/drivers/net/smc91x.c
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+++ b/drivers/net/smc91x.c
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@@ -1815,6 +1815,39 @@ static int __init smc_findirq(void __iom
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return probe_irq_off(cookie);
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}
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+static inline unsigned int is_gumstix_oui(u8 *addr)
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+{
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+ return (addr[0] == 0x00 && addr[1] == 0x15 && addr[2] == 0xC9);
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+}
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+
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+/**
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+ * gen_serial_ether_addr - Generate software assigned Ethernet address
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+ * based on the system_serial number
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+ * @addr: Pointer to a six-byte array containing the Ethernet address
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+ *
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+ * Generate an Ethernet address (MAC) that is not multicast
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+ * and has the local assigned bit set, keyed on the system_serial
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+ */
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+static inline void gen_serial_ether_addr(u8 *addr)
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+{
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+ static u8 ether_serial_digit = 0;
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+ addr [0] = system_serial_high >> 8;
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+ addr [1] = system_serial_high;
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+ addr [2] = system_serial_low >> 24;
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+ addr [3] = system_serial_low >> 16;
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+ addr [4] = system_serial_low >> 8;
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+ addr [5] = (system_serial_low & 0xc0) | /* top bits are from system serial */
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+ (1 << 4) | /* 2 bits identify interface type 1=ether, 2=usb, 3&4 undef */
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+ ((ether_serial_digit++) & 0x0f); /* 15 possible interfaces of each type */
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+
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+ if(!is_gumstix_oui(addr))
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+ {
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+ addr [0] &= 0xfe; /* clear multicast bit */
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+ addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
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+ }
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+}
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+
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+
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/*
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* Function: smc_probe(unsigned long ioaddr)
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*
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@@ -2032,15 +2065,13 @@ static int __init smc_probe(struct net_d
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THROTTLE_TX_PKTS ? " [throttle_tx]" : "");
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if (!is_valid_ether_addr(dev->dev_addr)) {
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- printk("%s: Invalid ethernet MAC address. Please "
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- "set using ifconfig\n", dev->name);
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- } else {
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+ gen_serial_ether_addr(dev->dev_addr);
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+ }
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/* Print the Ethernet address */
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printk("%s: Ethernet addr: ", dev->name);
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for (i = 0; i < 5; i++)
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printk("%2.2x:", dev->dev_addr[i]);
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printk("%2.2x\n", dev->dev_addr[5]);
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- }
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if (lp->phy_type == 0) {
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PRINTK("%s: No PHY found\n", dev->name);
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