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| author | Jesse Brandeburg <jesse.brandeburg@intel.com> | 2012-07-26 02:30:53 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2012-08-21 01:19:54 -0700 |
| commit | 6f6bbc186dc8e4e0c628db7decbd1a5e02cb5fd8 (patch) | |
| tree | 5d4aab558f968d6f78a0ae85db1c042a1ba3a552 /include/linux/ethtool.h | |
| parent | 1d76efe1577b4323609b1bcbfafa8b731eda071a (diff) | |
| download | lwn-6f6bbc186dc8e4e0c628db7decbd1a5e02cb5fd8.tar.gz lwn-6f6bbc186dc8e4e0c628db7decbd1a5e02cb5fd8.zip | |
ethtool.h: MDI setting support
This change modifies the core ethtool struct to allow a driver to
support setting of MDI/MDI-X state for twisted pair wiring. This
change uses a previously reserved u8 and should not change any
binary compatibility of ethtool.
Also as per Ben Hutchings' suggestion, the capabilities are
stored in a separate byte so the driver can report if it supports
changing settings.
see thread: http://kerneltrap.org/mailarchive/linux-netdev/2010/11/17/6289820/thread
see ethtool patches titled:
ethtool: allow setting MDI-X state
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: Ben Hutchings <bhutchings@solarflare.com>
Tested-by: Aaron Brown aaron.f.brown@intel.com
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'include/linux/ethtool.h')
| -rw-r--r-- | include/linux/ethtool.h | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 21eff418091b..fcb4f8e60c1c 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -45,8 +45,10 @@ struct ethtool_cmd { * bits) in Mbps. Please use * ethtool_cmd_speed()/_set() to * access it */ - __u8 eth_tp_mdix; - __u8 reserved2; + __u8 eth_tp_mdix; /* twisted pair MDI-X status */ + __u8 eth_tp_mdix_ctrl; /* twisted pair MDI-X control, when set, + * link should be renegotiated if necessary + */ __u32 lp_advertising; /* Features the link partner advertises */ __u32 reserved[2]; }; @@ -1229,10 +1231,13 @@ struct ethtool_ops { #define AUTONEG_DISABLE 0x00 #define AUTONEG_ENABLE 0x01 -/* Mode MDI or MDI-X */ -#define ETH_TP_MDI_INVALID 0x00 -#define ETH_TP_MDI 0x01 -#define ETH_TP_MDI_X 0x02 +/* MDI or MDI-X status/control - if MDI/MDI_X/AUTO is set then + * the driver is required to renegotiate link + */ +#define ETH_TP_MDI_INVALID 0x00 /* status: unknown; control: unsupported */ +#define ETH_TP_MDI 0x01 /* status: MDI; control: force MDI */ +#define ETH_TP_MDI_X 0x02 /* status: MDI-X; control: force MDI-X */ +#define ETH_TP_MDI_AUTO 0x03 /* control: auto-select */ /* Wake-On-Lan options. */ #define WAKE_PHY (1 << 0) |