1 files changed, 51 insertions, 65 deletions

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index de33de1e2052..da5b2de99ae4 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -489,7 +489,10 @@ struct ethtool_rx_flow_spec {
  * on return.
  *
  * For %ETHTOOL_GRXCLSRLCNT, @rule_cnt is set to the number of defined
- * rules on return.
+ * rules on return.  If @data is non-zero on return then it is the
+ * size of the rule table, plus the flag %RX_CLS_LOC_SPECIAL if the
+ * driver supports any special location values.  If that flag is not
+ * set in @data then special location values should not be used.
  *
  * For %ETHTOOL_GRXCLSRULE, @fs.@location specifies the location of an
  * existing rule on entry and @fs contains the rule on return.
@@ -501,10 +504,23 @@ struct ethtool_rx_flow_spec {
  * must use the second parameter to get_rxnfc() instead of @rule_locs.
  *
  * For %ETHTOOL_SRXCLSRLINS, @fs specifies the rule to add or update.
- * @fs.@location specifies the location to use and must not be ignored.
+ * @fs.@location either specifies the location to use or is a special
+ * location value with %RX_CLS_LOC_SPECIAL flag set.  On return,
+ * @fs.@location is the actual rule location.
  *
  * For %ETHTOOL_SRXCLSRLDEL, @fs.@location specifies the location of an
  * existing rule on entry.
+ *
+ * A driver supporting the special location values for
+ * %ETHTOOL_SRXCLSRLINS may add the rule at any suitable unused
+ * location, and may remove a rule at a later location (lower
+ * priority) that matches exactly the same set of flows.  The special
+ * values are: %RX_CLS_LOC_ANY, selecting any location;
+ * %RX_CLS_LOC_FIRST, selecting the first suitable location (maximum
+ * priority); and %RX_CLS_LOC_LAST, selecting the last suitable
+ * location (minimum priority).  Additional special values may be
+ * defined in future and drivers must return -%EINVAL for any
+ * unrecognised value.
  */
 struct ethtool_rxnfc {
         __u32                           cmd;
@@ -543,9 +559,15 @@ struct compat_ethtool_rxnfc {
 /**
  * struct ethtool_rxfh_indir - command to get or set RX flow hash indirection
  * @cmd: Specific command number - %ETHTOOL_GRXFHINDIR or %ETHTOOL_SRXFHINDIR
- * @size: On entry, the array size of the user buffer.  On return from
- *      %ETHTOOL_GRXFHINDIR, the array size of the hardware indirection table.
+ * @size: On entry, the array size of the user buffer, which may be zero.
+ *      On return from %ETHTOOL_GRXFHINDIR, the array size of the hardware
+ *      indirection table.
  * @ring_index: RX ring/queue index for each hash value
+ *
+ * For %ETHTOOL_GRXFHINDIR, a @size of zero means that only the size
+ * should be returned.  For %ETHTOOL_SRXFHINDIR, a @size of zero means
+ * the table should be reset to default values.  This last feature
+ * is not supported by the original implementations.
  */
 struct ethtool_rxfh_indir {
         __u32   cmd;
@@ -724,9 +746,6 @@ enum ethtool_sfeatures_retval_bits {
 
 #include <linux/rculist.h>
 
-/* needed by dev_disable_lro() */
-extern int __ethtool_set_flags(struct net_device *dev, u32 flags);
-
 extern int __ethtool_get_settings(struct net_device *dev,
                                   struct ethtool_cmd *cmd);
 
@@ -750,19 +769,18 @@ struct net_device;
 
 /* Some generic methods drivers may use in their ethtool_ops */
 u32 ethtool_op_get_link(struct net_device *dev);
-u32 ethtool_op_get_tx_csum(struct net_device *dev);
-int ethtool_op_set_tx_csum(struct net_device *dev, u32 data);
-int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data);
-int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data);
-u32 ethtool_op_get_sg(struct net_device *dev);
-int ethtool_op_set_sg(struct net_device *dev, u32 data);
-u32 ethtool_op_get_tso(struct net_device *dev);
-int ethtool_op_set_tso(struct net_device *dev, u32 data);
-u32 ethtool_op_get_ufo(struct net_device *dev);
-int ethtool_op_set_ufo(struct net_device *dev, u32 data);
-u32 ethtool_op_get_flags(struct net_device *dev);
-int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported);
-bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported);
+
+/**
+ * ethtool_rxfh_indir_default - get default value for RX flow hash indirection
+ * @index: Index in RX flow hash indirection table
+ * @n_rx_rings: Number of RX rings to use
+ *
+ * This function provides the default policy for RX flow hash indirection.
+ */
+static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
+{
+        return index % n_rx_rings;
+}
 
 /**
  * struct ethtool_ops - optional netdev operations
@@ -807,22 +825,6 @@ bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported);
  * @get_pauseparam: Report pause parameters
  * @set_pauseparam: Set pause parameters.  Returns a negative error code
  *      or zero.
- * @get_rx_csum: Deprecated in favour of the netdev feature %NETIF_F_RXCSUM.
- *      Report whether receive checksums are turned on or off.
- * @set_rx_csum: Deprecated in favour of generic netdev features.  Turn
- *      receive checksum on or off.  Returns a negative error code or zero.
- * @get_tx_csum: Deprecated as redundant. Report whether transmit checksums
- *      are turned on or off.
- * @set_tx_csum: Deprecated in favour of generic netdev features.  Turn
- *      transmit checksums on or off.  Returns a negative error code or zero.
- * @get_sg: Deprecated as redundant.  Report whether scatter-gather is
- *      enabled.  
- * @set_sg: Deprecated in favour of generic netdev features.  Turn
- *      scatter-gather on or off. Returns a negative error code or zero.
- * @get_tso: Deprecated as redundant.  Report whether TCP segmentation
- *      offload is enabled.
- * @set_tso: Deprecated in favour of generic netdev features.  Turn TCP
- *      segmentation offload on or off.  Returns a negative error code or zero.
  * @self_test: Run specified self-tests
  * @get_strings: Return a set of strings that describe the requested objects
  * @set_phys_id: Identify the physical devices, e.g. by flashing an LED
@@ -844,15 +846,6 @@ bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported);
  *      negative error code or zero.
  * @complete: Function to be called after any other operation except
  *      @begin.  Will be called even if the other operation failed.
- * @get_ufo: Deprecated as redundant.  Report whether UDP fragmentation
- *      offload is enabled.
- * @set_ufo: Deprecated in favour of generic netdev features.  Turn UDP
- *      fragmentation offload on or off.  Returns a negative error code or zero.
- * @get_flags: Deprecated as redundant.  Report features included in
- *      &enum ethtool_flags that are enabled.  
- * @set_flags: Deprecated in favour of generic netdev features.  Turn
- *      features included in &enum ethtool_flags on or off.  Returns a
- *      negative error code or zero.
  * @get_priv_flags: Report driver-specific feature flags.
  * @set_priv_flags: Set driver-specific feature flags.  Returns a negative
  *      error code or zero.
@@ -866,11 +859,13 @@ bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported);
  * @reset: Reset (part of) the device, as specified by a bitmask of
  *      flags from &enum ethtool_reset_flags.  Returns a negative
  *      error code or zero.
- * @set_rx_ntuple: Set an RX n-tuple rule.  Returns a negative error code
- *      or zero.
+ * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table.
+ *      Returns zero if not supported for this specific device.
  * @get_rxfh_indir: Get the contents of the RX flow hash indirection table.
+ *      Will not be called if @get_rxfh_indir_size returns zero.
  *      Returns a negative error code or zero.
  * @set_rxfh_indir: Set the contents of the RX flow hash indirection table.
+ *      Will not be called if @get_rxfh_indir_size returns zero.
  *      Returns a negative error code or zero.
  * @get_channels: Get number of channels.
  * @set_channels: Set number of channels.  Returns a negative error code or
@@ -917,14 +912,6 @@ struct ethtool_ops {
                                   struct ethtool_pauseparam*);
         int     (*set_pauseparam)(struct net_device *,
                                   struct ethtool_pauseparam*);
-        u32     (*get_rx_csum)(struct net_device *);
-        int     (*set_rx_csum)(struct net_device *, u32);
-        u32     (*get_tx_csum)(struct net_device *);
-        int     (*set_tx_csum)(struct net_device *, u32);
-        u32     (*get_sg)(struct net_device *);
-        int     (*set_sg)(struct net_device *, u32);
-        u32     (*get_tso)(struct net_device *);
-        int     (*set_tso)(struct net_device *, u32);
         void    (*self_test)(struct net_device *, struct ethtool_test *, u64 *);
         void    (*get_strings)(struct net_device *, u32 stringset, u8 *);
         int     (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
@@ -932,10 +919,6 @@ struct ethtool_ops {
                                      struct ethtool_stats *, u64 *);
         int     (*begin)(struct net_device *);
         void    (*complete)(struct net_device *);
-        u32     (*get_ufo)(struct net_device *);
-        int     (*set_ufo)(struct net_device *, u32);
-        u32     (*get_flags)(struct net_device *);
-        int     (*set_flags)(struct net_device *, u32);
         u32     (*get_priv_flags)(struct net_device *);
         int     (*set_priv_flags)(struct net_device *, u32);
         int     (*get_sset_count)(struct net_device *, int);
@@ -944,12 +927,9 @@ struct ethtool_ops {
         int     (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
         int     (*flash_device)(struct net_device *, struct ethtool_flash *);
         int     (*reset)(struct net_device *, u32 *);
-        int     (*set_rx_ntuple)(struct net_device *,
-                                 struct ethtool_rx_ntuple *);
-        int     (*get_rxfh_indir)(struct net_device *,
-                                  struct ethtool_rxfh_indir *);
-        int     (*set_rxfh_indir)(struct net_device *,
-                                  const struct ethtool_rxfh_indir *);
+        u32     (*get_rxfh_indir_size)(struct net_device *);
+        int     (*get_rxfh_indir)(struct net_device *, u32 *);
+        int     (*set_rxfh_indir)(struct net_device *, const u32 *);
         void    (*get_channels)(struct net_device *, struct ethtool_channels *);
         int     (*set_channels)(struct net_device *, struct ethtool_channels *);
         int     (*get_dump_flag)(struct net_device *, struct ethtool_dump *);
@@ -1173,6 +1153,12 @@ struct ethtool_ops {
 
 #define RX_CLS_FLOW_DISC        0xffffffffffffffffULL
 
+/* Special RX classification rule insert location values */
+#define RX_CLS_LOC_SPECIAL      0x80000000      /* flag */
+#define RX_CLS_LOC_ANY          0xffffffff
+#define RX_CLS_LOC_FIRST        0xfffffffe
+#define RX_CLS_LOC_LAST         0xfffffffd
+
 /* Reset flags */
 /* The reset() operation must clear the flags for the components which
  * were actually reset.  On successful return, the flags indicate the