On Wed, Dec 30, 2015 at 4:09 AM, Takuma Ueba <t.ueb...@gmail.com> wrote: > I210 device IPv6 autoconf test sometimes fails, > because DAD NS for link-local is not transmitted. > This packet is silently dropped. > This problem is seen only GbE environment. > > igb_watchdog_task link up detection continues to the following process. > The following cases are observed: > 1.PHY 1000BASE-T Status Register Remote receiver status bit is NG. > (NG status becomes OK after about 200 - 700ms) > 2.In this case, the transfer packet is silently dropped. > > 1000BASE-T Status register > [Expected]: 0x3800 or 0x7800 > [problem occurred]: 0x2800 or 0x6800 > Frequency of occurrence: approx 1/10 - 1/40 observed > > In order to avoid this problem, > wait until 1000BASE-T Status register "Remote receiver status OK" > > After applying this patch, at least 400 runs succeed with no problems. > > Signed-off-by: Takuma Ueba <t.ueb...@gmail.com> > --- > drivers/net/ethernet/intel/igb/igb_main.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+)
Please send this to intel-wired-...@lists.osuosl.org mailing list, or at least CC the list since all Wired Ethernet Intel driver patches are handled through that list. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
