ethtool: Introduce a method for getting time stamping capabilities.

[firefly-linux-kernel-4.4.55.git] / include / linux / ethtool.h

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index e1d9e0ede3095a080c0a40cefa70799a0654e756..1769714447b39a915f3119967e6b84a640003a85 100644 (file)
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -726,6 +726,29 @@ struct ethtool_sfeatures {
        struct ethtool_set_features_block features[0];
 };
 
+/**
+ * struct ethtool_ts_info - holds a device's timestamping and PHC association
+ * @cmd: command number = %ETHTOOL_GET_TS_INFO
+ * @so_timestamping: bit mask of the sum of the supported SO_TIMESTAMPING flags
+ * @phc_index: device index of the associated PHC, or -1 if there is none
+ * @tx_types: bit mask of the supported hwtstamp_tx_types enumeration values
+ * @rx_filters: bit mask of the supported hwtstamp_rx_filters enumeration values
+ *
+ * The bits in the 'tx_types' and 'rx_filters' fields correspond to
+ * the 'hwtstamp_tx_types' and 'hwtstamp_rx_filters' enumeration values,
+ * respectively.  For example, if the device supports HWTSTAMP_TX_ON,
+ * then (1 << HWTSTAMP_TX_ON) in 'tx_types' will be set.
+ */
+struct ethtool_ts_info {
+       __u32   cmd;
+       __u32   so_timestamping;
+       __s32   phc_index;
+       __u32   tx_types;
+       __u32   tx_reserved[3];
+       __u32   rx_filters;
+       __u32   rx_reserved[3];
+};
+
 /*
  * %ETHTOOL_SFEATURES changes features present in features[].valid to the
  * values of corresponding bits in features[].requested. Bits in .requested
@@ -893,6 +916,9 @@ static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
  *                and flag of the device.
  * @get_dump_data: Get dump data.
  * @set_dump: Set dump specific flags to the device.
+ * @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
+ *     Drivers supporting transmit time stamps in software should set this to
+ *     ethtool_op_get_ts_info().
  *
  * All operations are optional (i.e. the function pointer may be set
  * to %NULL) and callers must take this into account.  Callers must
@@ -955,6 +981,7 @@ struct ethtool_ops {
        int     (*get_dump_data)(struct net_device *,
                                 struct ethtool_dump *, void *);
        int     (*set_dump)(struct net_device *, struct ethtool_dump *);
+       int     (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
 
 };
 #endif /* __KERNEL__ */
@@ -1029,6 +1056,7 @@ struct ethtool_ops {
 #define ETHTOOL_SET_DUMP       0x0000003e /* Set dump settings */
 #define ETHTOOL_GET_DUMP_FLAG  0x0000003f /* Get dump settings */
 #define ETHTOOL_GET_DUMP_DATA  0x00000040 /* Get dump data */
+#define ETHTOOL_GET_TS_INFO    0x00000041 /* Get time stamping and PHC info */
 
 /* compatibility with older code */
 #define SPARC_ETH_GSET         ETHTOOL_GSET