Hi, On Tue, Jan 06, 2015 at 02:13:23PM -0500, David Miller wrote: > From: Felipe Balbi <balbi@xxxxxx> > Date: Tue, 6 Jan 2015 11:43:32 -0600 > > > CPSW completely hangs if we add, and later remove, > > VLAN ID #1. What happens is that after removing > > VLAN ID #1, no packets will be received by CPSW > > rendering network unusable. > > > > In order to "fix" the issue, we're returning -EINVAL > > if anybody tries to add VLAN ID #1. While at that, > > also filter out any ID > 4095 because we only have > > 12 bits for VLAN IDs. > > > > Fixes: 3b72c2f (drivers: net:ethernet: cpsw: add support for VLAN) > > Cc: <stable@xxxxxxxxxxxxxxx> # v3.9+ > > Cc: Mugunthan V N <mugunthanvnm@xxxxxx> > > Tested-by: Schuyler Patton <spatton@xxxxxx> > > Signed-off-by: Felipe Balbi <balbi@xxxxxx> > > You can't just unilaterally make one VLAN ID unusable. > > A better way to handle this situation must be found, > and if that means turning off hw VLAN support completely, > that's a much better alternative to this. > > I'm not applying this patch, sorry. All other IDs work alright, it's just ID 1 which seems to be quirky. In fact when trying to add VLAN ID 1, vconfig itself dumps out a warning that VLAN ID 1 doesn't work on most switches. What you're saying here is that you prefer to drop a feature that works for all other 1023 IDs because 1 ID is quirky. Sounds like overkill to me. -- balbi
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