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net: Introduce new feature setting ops
authorMichał Mirosław <mirq-linux@rere.qmqm.pl>
Tue, 15 Feb 2011 16:59:17 +0000 (16:59 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 17 Feb 2011 22:16:33 +0000 (14:16 -0800)
commit5455c6998d34dc983a8693500e4dffefc3682dc5
treeb765aecf6d33d8c550cde78368ccc8654951ec07
parent0a417704777ed29d0e8c72b7274a328e61248e75
net: Introduce new feature setting ops

This introduces a new framework to handle device features setting.
It consists of:
  - new fields in struct net_device:
+ hw_features - features that hw/driver supports toggling
+ wanted_features - features that user wants enabled, when possible
  - new netdev_ops:
+ feat = ndo_fix_features(dev, feat) - API checking constraints for
enabling features or their combinations
+ ndo_set_features(dev) - API updating hardware state to match
changed dev->features
  - new ethtool commands:
+ ETHTOOL_GFEATURES/ETHTOOL_SFEATURES: get/set dev->wanted_features
and trigger device reconfiguration if resulting dev->features
changed
+ ETHTOOL_GSTRINGS(ETH_SS_FEATURES): get feature bits names (meaning)

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/ethtool.h
include/linux/netdevice.h
net/core/dev.c
net/core/ethtool.c