On Fri, Apr 20, 2018 at 3:05 PM, Andrew Lunn <and...@lunn.ch> wrote: > On Fri, Apr 20, 2018 at 03:01:09PM +0300, Ran Shalit wrote: >> On Fri, Apr 20, 2018 at 2:55 PM, Andrew Lunn <and...@lunn.ch> wrote: >> > On Fri, Apr 20, 2018 at 11:44:14AM +0300, Ran Shalit wrote: >> >> Hello, >> >> >> >> We configure external switch in u-boot. >> >> The configuration is through mdio (cpu is mac and switch is phy). >> >> >> >> But in Linux we rather not implement any communication in mdio to >> >> switch, but it means that we then don't have the information of link >> >> state. >> >> >> >> Is it possible to force in Linux (by default in startup) Ethernet >> >> connectivity (netif_carrier_on, netif_wake_queue) even if there is no >> >> information of real link state ? >> > >> > Hi Ran >> > >> > Use a fixed-phy. >> > >> >> Hi Andrew, >> >> I'll check about fixed phy, >> but in general, is it a problem to have always netif_carrier_on, even >> when there is no link ? > > The link between the CPU and the switch should be up all the > time. That is the point of fixed-link. >
I understand. But what about the mac driver, does it just do netif_start_queue ? Thanks > Andrew
