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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7363115efb
Broadcast filters can now cause overflow promiscuous to trigger when adding "too many" VLANs to all the ports of a device and the driver needs a way to exit overflow promiscuous once triggered. Currently the driver looks to see if there are "too many" filters and/or we have any failed filters to determine when it is safe to exit overflow promiscuous. If we trigger overflow promiscuous with broadcast filters, any new filters added will be "auto-failed" until we exit overflow promiscuous. Since the user can't manually remove the failed broadcast filters for VLANs (nor should we expect the user to do such), there is no way to exit overflow promiscuous without reloading the driver. The easiest way to do this is to remove the shortcut to "auto-fail" filters in overflow promiscuous. If the user removes the VLANs, the failed filters will be removed and since we're no longer "auto-failing" new filters, we'll eventually get a good set of filters and exit overflow promiscuous. This has the side benefit of making filter state more explicit in that if a filter says it's failed we know for a fact it failed and not just assuming it will if we're in overflow promiscuous. This is nice because if the user removes some filters and then adds some, even if we're in overflow promiscuous, the filter might succeed; we were just assuming it won't because the user hasn't rectified other existing failed filters. Signed-off-by: Alan Brady <alan.brady@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> |
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