From: David Decotigny <[email protected]> Date: Fri, 24 Aug 2012 20:22:50 -0700
> On a dual port MCP55 10de:0373 (rev a3) NIC with both ports connected, > we identified a configuration that does freeze the whole NIC: having > autoneg & TX pause turned on while one port is physically connected > but interface is down (eg. eth1) eventually causes the whole NIC to > freeze (eth1 and... eth0). This triggers TX timeouts on the UP > interface and, more generally, an unreachable network. > > In order to avoid the bug, all we have to do is make sure not to > configure TX pause on the hardware while NIC is down. This is what the > 2nd patch of the series does (details included). > > And, in case the NIC is in a bad state at reboot (should not happen > anymore thanks to patch above), third patch basically always makes > sure to fix the NIC when module is loaded. > > I could only test this with a MCP55 10de:0373 (rev a3) PCI device on a > x86_64 host. All applied to net-next, thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
