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Message-ID: <527A163A.9010409@speechpro.com> Date: Wed, 06 Nov 2013 14:13:14 +0400 From: Ivan Frederiks <frederiks@...echpro.com> To: Francois Romieu <romieu@...zoreil.com> CC: Linux r8169 crew <netdev@...r.kernel.org> Subject: Re: Realtek RTL8102E registers Hello Francois, I found solution for the issue that I described earlier: one has to set correct MAC-address before bringing up the interface. On my board RTL8102E works without EEPROM, so initial MAC-address value is unpredictable. In many cases this value has multicast bit set to 1. This fact breaks driver and (or) TCP stack operation: * r8169 reports that link is down * r8101 reports that link is OK, but Linux TCP stack ignores packets with multicast destination MAC Hope this info would be useful. BTW, I suppose that driver could have some kind of protection against such situations. On 30.10.2013 01:40, Francois Romieu wrote: > Ivan Frederiks <frederiks@...echpro.com> : > [...] >> Maybe you have access to RTL8102E register description ? > > No. > > Realtek's hardware documentation policy isn't exactly opened. Your hardware > vendor may help. > > [...] >> Issue description: > [snip] > > kernel version and r81xx XID value as it should appear in dmesg would > be welcome. > -- Best regards, Ivan Frederiks Embedded developer Speech Technology Center Phone: +7-812-331-0665, ext. 6123, 6942 Fax: +7-812-327-9297 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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