mirror of https://gitee.com/openkylin/linux.git
net: ethool: Document struct ethtool_flow_ext
Add documentation for struct ethtool_flow_ext especially in regard to what flags are needed for which fields. Signed-off-by: Yan Burman <yanb@mellanox.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -503,9 +503,20 @@ union ethtool_flow_union {
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__u8 hdata[52];
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};
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/**
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* struct ethtool_flow_ext - additional RX flow fields
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* @h_dest: destination MAC address
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* @vlan_etype: VLAN EtherType
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* @vlan_tci: VLAN tag control information
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* @data: user defined data
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*
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* Note, @vlan_etype, @vlan_tci, and @data are only valid if %FLOW_EXT
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* is set in &struct ethtool_rx_flow_spec @flow_type.
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* @h_dest is valid if %FLOW_MAC_EXT is set.
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*/
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struct ethtool_flow_ext {
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__u8 padding[2];
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unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
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unsigned char h_dest[ETH_ALEN];
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__be16 vlan_etype;
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__be16 vlan_tci;
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__be32 data[2];
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@ -519,7 +530,8 @@ struct ethtool_flow_ext {
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* @m_u: Masks for flow field bits to be matched
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* @m_ext: Masks for additional field bits to be matched
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* Note, all additional fields must be ignored unless @flow_type
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* includes the %FLOW_EXT flag.
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* includes the %FLOW_EXT or %FLOW_MAC_EXT flag
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* (see &struct ethtool_flow_ext description).
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* @ring_cookie: RX ring/queue index to deliver to, or %RX_CLS_FLOW_DISC
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* if packets should be discarded
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* @location: Location of rule in the table. Locations must be
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