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It appears that stmmac is not the only hardware which requires a software-driven verification state machine for the MAC Merge layer. While on the one hand it's good to encourage hardware implementations, on the other hand it's quite difficult to tolerate multiple drivers implementing independently fairly non-trivial logic. Extract the hardware-independent logic from stmmac into library code and put it in ethtool. Name the state structure "mmsv" for MAC Merge Software Verification. Let this expose an operations structure for executing the hardware stuff: sync hardware with the tx_active boolean (result of verification process), enable/disable the pMAC, send mPackets, notify library of external events (reception of mPackets), as well as link state changes. Note that it is assumed that the external events are received in hardirq context. If they are not, it is probably a good idea to disable hardirqs when calling ethtool_mmsv_event_handle(), because the library does not do so. Also, the MM software verification process has no business with the tx_min_frag_size, that is all the driver's to handle. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Co-developed-by: Choong Yong Liang <yong.liang.choong@linux.intel.com> Signed-off-by: Choong Yong Liang <yong.liang.choong@linux.intel.com> Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com> Tested-by: Furong Xu <0x1207@gmail.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Faizal Rahim <faizal.abdul.rahim@linux.intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> |
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