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linux/net/ethtool/rss.c

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ethtool: add netlink based get rss support Add netlink based support for "ethtool -x <dev> [context x]" command by implementing ETHTOOL_MSG_RSS_GET netlink message. This is equivalent to functionality provided via ETHTOOL_GRSSH in ioctl path. It sends RSS table, hash key and hash function of an interface to user space. This patch implements existing functionality available in ioctl path and enables addition of new RSS context based parameters in future. Signed-off-by: Sudheer Mogilappagari <sudheer.mogilappagari@intel.com> Link: https://lore.kernel.org/r/20221202002555.241580-1-sudheer.mogilappagari@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-12-01 16:25:55 -08:00
ethtool: add netlink attr in rss get reply only if value is not null Current code for RSS_GET ethtool command includes netlink attributes in reply message to user space even if they are null. Added checks to include netlink attribute in reply message only if a value is received from driver. Drivers might return null for RSS indirection table or hash key. Instead of including attributes with empty value in the reply message, add netlink attribute only if there is content. Fixes: 7112a04664bf ("ethtool: add netlink based get rss support") Signed-off-by: Sudheer Mogilappagari <sudheer.mogilappagari@intel.com> Reviewed-by: Michal Kubecek <mkubecek@suse.cz> Link: https://lore.kernel.org/r/20230111235607.85509-1-sudheer.mogilappagari@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-11 15:56:07 -08:00
ethtool: add netlink based get rss support Add netlink based support for "ethtool -x <dev> [context x]" command by implementing ETHTOOL_MSG_RSS_GET netlink message. This is equivalent to functionality provided via ETHTOOL_GRSSH in ioctl path. It sends RSS table, hash key and hash function of an interface to user space. This patch implements existing functionality available in ioctl path and enables addition of new RSS context based parameters in future. Signed-off-by: Sudheer Mogilappagari <sudheer.mogilappagari@intel.com> Link: https://lore.kernel.org/r/20221202002555.241580-1-sudheer.mogilappagari@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-12-01 16:25:55 -08:00