From d4676eac0de2e6d88eb3e2c02b4e9813d7d7f205 Mon Sep 17 00:00:00 2001 From: Yan Burman Date: Wed, 12 Dec 2012 02:13:17 +0000 Subject: net: ethtool: Add destination MAC address to flow steering API Add ability to specify destination MAC address for L3/L4 flow spec in order to be able to specify action for different VM's under vSwitch configuration. This change is transparent to older userspace. Signed-off-by: Yan Burman Signed-off-by: Amir Vadai Signed-off-by: David S. Miller --- include/uapi/linux/ethtool.h | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'include/uapi/linux/ethtool.h') diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index d3eaaaf1009e..be8c41e2dc15 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -500,13 +500,15 @@ union ethtool_flow_union { struct ethtool_ah_espip4_spec esp_ip4_spec; struct ethtool_usrip4_spec usr_ip4_spec; struct ethhdr ether_spec; - __u8 hdata[60]; + __u8 hdata[52]; }; struct ethtool_flow_ext { - __be16 vlan_etype; - __be16 vlan_tci; - __be32 data[2]; + __u8 padding[2]; + unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ + __be16 vlan_etype; + __be16 vlan_tci; + __be32 data[2]; }; /** @@ -1027,6 +1029,7 @@ enum ethtool_sfeatures_retval_bits { #define ETHER_FLOW 0x12 /* spec only (ether_spec) */ /* Flag to enable additional fields in struct ethtool_rx_flow_spec */ #define FLOW_EXT 0x80000000 +#define FLOW_MAC_EXT 0x40000000 /* L3-L4 network traffic flow hash options */ #define RXH_L2DA (1 << 1) -- cgit v1.2.3 From dc2e57340deb8be1133b1eae2c7d4303133c133c Mon Sep 17 00:00:00 2001 From: Yan Burman Date: Thu, 13 Dec 2012 05:20:59 +0000 Subject: 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 Reviewed-by: Ben Hutchings Signed-off-by: David S. Miller --- include/uapi/linux/ethtool.h | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'include/uapi/linux/ethtool.h') diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index be8c41e2dc15..0c9b44871df0 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -503,9 +503,20 @@ union ethtool_flow_union { __u8 hdata[52]; }; +/** + * struct ethtool_flow_ext - additional RX flow fields + * @h_dest: destination MAC address + * @vlan_etype: VLAN EtherType + * @vlan_tci: VLAN tag control information + * @data: user defined data + * + * Note, @vlan_etype, @vlan_tci, and @data are only valid if %FLOW_EXT + * is set in &struct ethtool_rx_flow_spec @flow_type. + * @h_dest is valid if %FLOW_MAC_EXT is set. + */ struct ethtool_flow_ext { __u8 padding[2]; - unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ + unsigned char h_dest[ETH_ALEN]; __be16 vlan_etype; __be16 vlan_tci; __be32 data[2]; @@ -519,7 +530,8 @@ struct ethtool_flow_ext { * @m_u: Masks for flow field bits to be matched * @m_ext: Masks for additional field bits to be matched * Note, all additional fields must be ignored unless @flow_type - * includes the %FLOW_EXT flag. + * includes the %FLOW_EXT or %FLOW_MAC_EXT flag + * (see &struct ethtool_flow_ext description). * @ring_cookie: RX ring/queue index to deliver to, or %RX_CLS_FLOW_DISC * if packets should be discarded * @location: Location of rule in the table. Locations must be -- cgit v1.2.3