vmxnet3 driver bug?

Lewis Donzis lew at perftech.com
Tue Oct 17 14:36:40 UTC 2017


The VMXNET3 driver appears to have a bug that prevents it from correctly reporting when the link goes down.

There are two lines of code that should be deleted in /usr/src/sys/dev/vmware/vmxnet3/if_vmx.c:

@@ -3619,8 +3619,6 @@ vmxnet3_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
        VMXNET3_CORE_LOCK(sc);
        if (vmxnet3_link_is_up(sc) != 0)
                ifmr->ifm_status |= IFM_ACTIVE;
-       else
-               ifmr->ifm_status |= IFM_NONE;
        VMXNET3_CORE_UNLOCK(sc);
 }

IFM_NONE doesn’t belong in the status flags and, coincidentally, is defined with an identical value as IFM_ACTIVE, so it indicates that link is always active.

Thanks,
lew


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