[U-Boot] [PATCH 01/27] net: new utility functions for working with enetaddr's

[Wolfgang Denk]

Dear Mike,

In message <200902161900.49096.vapier at gentoo.org> you wrote:
>
> > Hm... Linux has a printk() format specifier for MAC addresses. Sounds
> > like a clever idea to me. Maybe we should borrow that code?
>
> it does eh ?  that certainly sounds a lot better than str_enetaddr() as every 
> place i changed to use it was in a printf() string.  where in the kernel is 
> that code ?  i looked in lib/vsprintf.c but couldnt find it.

But it is in lib/vsprintf.c:

 ...
 644 /*
 645  * Show a '%p' thing.  A kernel extension is that the '%p' is followed
 646  * by an extra set of alphanumeric characters that are extended format
 647  * specifiers.
 648  *
 649  * Right now we handle:
 650  *
 651  * - 'F' For symbolic function descriptor pointers
 652  * - 'S' For symbolic direct pointers
 653  * - 'R' For a struct resource pointer, it prints the range of
 654  *       addresses (not the name nor the flags)
 655  * - 'M' For a 6-byte MAC address, it prints the address in the
 656  *       usual colon-separated hex notation
 657  * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated
 658  *       decimal for v4 and colon separated network-order 16 bit hex for v6)
 659  * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is
 660  *       currently the same
 ...

So it's actually printk("%pM", ...);

Best regards,

Wolfgang Denk

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