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| author | Yan Burman <yanb@mellanox.com> | 2012-12-13 05:20:59 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-12-13 12:58:11 -0500 |
| commit | dc2e57340deb8be1133b1eae2c7d4303133c133c (patch) | |
| tree | 876538b12d2e4bfae837294bfb84d391371b73c1 | |
| parent | 7bdc1b4abab3af0a803300f706c9814ef4e20a3e (diff) | |
| download | linux-dc2e57340deb8be1133b1eae2c7d4303133c133c.tar.bz2 | |
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>
| -rw-r--r-- | include/uapi/linux/ethtool.h | 16 |
1 files changed, 14 insertions, 2 deletions
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 |