On Fri, 2014-04-18 at 14:21 +0000, Bjoern A. Zeeb wrote: > Author: bz > Date: Fri Apr 18 14:21:10 2014 > New Revision: 264646 > URL: http://svnweb.freebsd.org/changeset/base/264646 > > Log: > Now that I figured out where the ethernet addresses come from > on NetFPGA-10G, assign one to the interface by default in a very > similar way. > > MFC after: 6 days > X-Easter-Egg-Hunt: yes > > Modified: > head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac.c > > Modified: head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac.c > ============================================================================== > --- head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac.c Fri Apr 18 12:51:30 > 2014 (r264645) > +++ head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac.c Fri Apr 18 14:21:10 > 2014 (r264646) > @@ -446,7 +446,25 @@ static int > nf10bmac_reset(struct nf10bmac_softc *sc) > { > > - /* Currently we cannot do anything. */ > + /* > + * If we do not have an ether address set, initialize to the same > + * OUI as NetFPGA-10G Linux driver does (which luckily seems > + * unallocated). We just change the NIC specific part from > + * the slightly long "\0NF10C0" to "\0NFBSD". > + * Oh and we keep the way of setting it from a string as they do. > + * It's an amazing way to hide it. > + * XXX-BZ If NetFPGA gets their own OUI we should fix this. > + */ > + if (sc->nf10bmac_eth_addr[0] == 0x00 && > + sc->nf10bmac_eth_addr[1] == 0x00 && > + sc->nf10bmac_eth_addr[2] == 0x00 && > + sc->nf10bmac_eth_addr[3] == 0x00 && > + sc->nf10bmac_eth_addr[4] == 0x00 && > + sc->nf10bmac_eth_addr[5] == 0x00) { > + memcpy(&sc->nf10bmac_eth_addr, "\0NFBSD", ETHER_ADDR_LEN); > + sc->nf10bmac_eth_addr[5] += sc->nf10bmac_unit; > + } > + > return (0); > } > >
For other drivers/socs where we need to cook up an address on the fly, we've used "bsd" as the OUI and a 24-bit random for the low order. Aside from the nice aesthetic, 'bsd' has the "locally administered" bit set and thus is g'teed to not clash with any globally assigned OUI. -- Ian _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
