net: dsa: Pass stringset to ethtool operations

Up until now we largely assumed that we were interested in ETH_SS_STATS
type of strings for all ethtool operations, this is about to change with
the introduction of additional string sets, e.g: ETH_SS_PHY_STATS.
Update all functions to take an appropriate stringset argument and act
on it when it is different than ETH_SS_STATS for now.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 files changed, 83 insertions, 28 deletions

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 78616787f2a3..726b2d8c6fe9 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -806,13 +806,17 @@ static unsigned int b53_get_mib_size(struct b53_device *dev)
                 return B53_MIBS_SIZE;
 }
 
-void b53_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
+void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset,
+                     uint8_t *data)
 {
         struct b53_device *dev = ds->priv;
         const struct b53_mib_desc *mibs = b53_get_mib(dev);
         unsigned int mib_size = b53_get_mib_size(dev);
         unsigned int i;
 
+        if (stringset != ETH_SS_STATS)
+                return;
+
         for (i = 0; i < mib_size; i++)
                 strlcpy(data + i * ETH_GSTRING_LEN,
                         mibs[i].name, ETH_GSTRING_LEN);
@@ -852,10 +856,13 @@ void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data)
 }
 EXPORT_SYMBOL(b53_get_ethtool_stats);
 
-int b53_get_sset_count(struct dsa_switch *ds, int port)
+int b53_get_sset_count(struct dsa_switch *ds, int port, int sset)
 {
         struct b53_device *dev = ds->priv;
 
+        if (sset != ETH_SS_STATS)
+                return 0;
+
         return b53_get_mib_size(dev);
 }
 EXPORT_SYMBOL(b53_get_sset_count);
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 1187ebd79287..b933d5cb5c2d 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -286,9 +286,10 @@ static inline int b53_switch_get_reset_gpio(struct b53_device *dev)
 /* Exported functions towards other drivers */
 void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port);
 int b53_configure_vlan(struct dsa_switch *ds);
-void b53_get_strings(struct dsa_switch *ds, int port, uint8_t *data);
+void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset,
+                     uint8_t *data);
 void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data);
-int b53_get_sset_count(struct dsa_switch *ds, int port);
+int b53_get_sset_count(struct dsa_switch *ds, int port, int sset);
 int b53_br_join(struct dsa_switch *ds, int port, struct net_device *bridge);
 void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *bridge);
 void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state);
diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index f77be9f85cb3..9354cc08d3fd 100644
--- a/drivers/net/dsa/dsa_loop.c
+++ b/drivers/net/dsa/dsa_loop.c
@@ -86,16 +86,23 @@ static int dsa_loop_setup(struct dsa_switch *ds)
         return 0;
 }
 
-static int dsa_loop_get_sset_count(struct dsa_switch *ds, int port)
+static int dsa_loop_get_sset_count(struct dsa_switch *ds, int port, int sset)
 {
+        if (sset != ETH_SS_STATS)
+                return 0;
+
         return __DSA_LOOP_CNT_MAX;
 }
 
-static void dsa_loop_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
+static void dsa_loop_get_strings(struct dsa_switch *ds, int port,
+                                 u32 stringset, uint8_t *data)
 {
         struct dsa_loop_priv *ps = ds->priv;
         unsigned int i;
 
+        if (stringset != ETH_SS_STATS)
+                return;
+
         for (i = 0; i < __DSA_LOOP_CNT_MAX; i++)
                 memcpy(data + i * ETH_GSTRING_LEN,
                        ps->ports[port].mib[i].name, ETH_GSTRING_LEN);
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index fefa454f3e56..b4f6e1a67dd9 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -977,10 +977,14 @@ static const struct lan9303_mib_desc lan9303_mib[] = {
         { .offset = LAN9303_MAC_TX_LATECOL_0, .name = "TxLateCol", },
 };
 
-static void lan9303_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
+static void lan9303_get_strings(struct dsa_switch *ds, int port,
+                                u32 stringset, uint8_t *data)
 {
         unsigned int u;
 
+        if (stringset != ETH_SS_STATS)
+                return;
+
         for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
                 strncpy(data + u * ETH_GSTRING_LEN, lan9303_mib[u].name,
                         ETH_GSTRING_LEN);
@@ -1007,8 +1011,11 @@ static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,
         }
 }
 
-static int lan9303_get_sset_count(struct dsa_switch *ds, int port)
+static int lan9303_get_sset_count(struct dsa_switch *ds, int port, int sset)
 {
+        if (sset != ETH_SS_STATS)
+                return 0;
+
         return ARRAY_SIZE(lan9303_mib);
 }
 
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index bcb3e6c734f2..7210c49b7922 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -439,15 +439,22 @@ static void ksz_disable_port(struct dsa_switch *ds, int port,
         ksz_port_cfg(dev, port, REG_PORT_CTRL_0, PORT_MAC_LOOPBACK, true);
 }
 
-static int ksz_sset_count(struct dsa_switch *ds, int port)
+static int ksz_sset_count(struct dsa_switch *ds, int port, int sset)
 {
+        if (sset != ETH_SS_STATS)
+                return 0;
+
         return TOTAL_SWITCH_COUNTER_NUM;
 }
 
-static void ksz_get_strings(struct dsa_switch *ds, int port, uint8_t *buf)
+static void ksz_get_strings(struct dsa_switch *ds, int port,
+                            u32 stringset, uint8_t *buf)
 {
         int i;
 
+        if (stringset != ETH_SS_STATS)
+                return;
+
         for (i = 0; i < TOTAL_SWITCH_COUNTER_NUM; i++) {
                 memcpy(buf + i * ETH_GSTRING_LEN, mib_names[i].string,
                        ETH_GSTRING_LEN);
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 80a4dbc3a499..62e486652e62 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -573,10 +573,14 @@ static int mt7530_phy_write(struct dsa_switch *ds, int port, int regnum,
 }
 
 static void
-mt7530_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
+mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset,
+                   uint8_t *data)
 {
         int i;
 
+        if (stringset != ETH_SS_STATS)
+                return;
+
         for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++)
                 strncpy(data + i * ETH_GSTRING_LEN, mt7530_mib[i].name,
                         ETH_GSTRING_LEN);
@@ -604,8 +608,11 @@ mt7530_get_ethtool_stats(struct dsa_switch *ds, int port,
 }
 
 static int
-mt7530_get_sset_count(struct dsa_switch *ds, int port)
+mt7530_get_sset_count(struct dsa_switch *ds, int port, int sset)
 {
+        if (sset != ETH_SS_STATS)
+                return 0;
+
         return ARRAY_SIZE(mt7530_mib);
 }
 
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 3d2091099f7f..8f92ccc0dd54 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -742,11 +742,14 @@ static void mv88e6xxx_atu_vtu_get_strings(uint8_t *data)
 }
 
 static void mv88e6xxx_get_strings(struct dsa_switch *ds, int port,
-                                  uint8_t *data)
+                                  u32 stringset, uint8_t *data)
 {
         struct mv88e6xxx_chip *chip = ds->priv;
         int count = 0;
 
+        if (stringset != ETH_SS_STATS)
+                return;
+
         mutex_lock(&chip->reg_lock);
 
         if (chip->info->ops->stats_get_strings)
@@ -789,12 +792,15 @@ static int mv88e6320_stats_get_sset_count(struct mv88e6xxx_chip *chip)
                                               STATS_TYPE_BANK1);
 }
 
-static int mv88e6xxx_get_sset_count(struct dsa_switch *ds, int port)
+static int mv88e6xxx_get_sset_count(struct dsa_switch *ds, int port, int sset)
 {
         struct mv88e6xxx_chip *chip = ds->priv;
         int serdes_count = 0;
         int count = 0;
 
+        if (sset != ETH_SS_STATS)
+                return 0;
+
         mutex_lock(&chip->reg_lock);
         if (chip->info->ops->stats_get_sset_count)
                 count = chip->info->ops->stats_get_sset_count(chip);
diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
index 600d5ad1fbde..757b6d90ea36 100644
--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -600,10 +600,13 @@ qca8k_phy_write(struct dsa_switch *ds, int phy, int regnum, u16 val)
 }
 
 static void
-qca8k_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
+qca8k_get_strings(struct dsa_switch *ds, int port, u32 stringset, uint8_t *data)
 {
         int i;
 
+        if (stringset != ETH_SS_STATS)
+                return;
+
         for (i = 0; i < ARRAY_SIZE(ar8327_mib); i++)
                 strncpy(data + i * ETH_GSTRING_LEN, ar8327_mib[i].name,
                         ETH_GSTRING_LEN);
@@ -631,8 +634,11 @@ qca8k_get_ethtool_stats(struct dsa_switch *ds, int port,
 }
 
 static int
-qca8k_get_sset_count(struct dsa_switch *ds, int port)
+qca8k_get_sset_count(struct dsa_switch *ds, int port, int sset)
 {
+        if (sset != ETH_SS_STATS)
+                return 0;
+
         return ARRAY_SIZE(ar8327_mib);
 }
 
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 60fb4ec8ba61..0bc0aad1b02e 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -356,10 +356,11 @@ struct dsa_switch_ops {
         /*
          * ethtool hardware statistics.
          */
-        void    (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
+        void    (*get_strings)(struct dsa_switch *ds, int port,
+                               u32 stringset, uint8_t *data);
         void    (*get_ethtool_stats)(struct dsa_switch *ds,
                                      int port, uint64_t *data);
-        int     (*get_sset_count)(struct dsa_switch *ds, int port);
+        int     (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
 
         /*
          * ethtool Wake-on-LAN
diff --git a/net/dsa/master.c b/net/dsa/master.c
index 9ec16b39ed15..8d27687fd0ca 100644
--- a/net/dsa/master.c
+++ b/net/dsa/master.c
@@ -38,11 +38,14 @@ static int dsa_master_get_sset_count(struct net_device *dev, int sset)
         struct dsa_switch *ds = cpu_dp->ds;
         int count = 0;
 
-        if (ops->get_sset_count)
-                count += ops->get_sset_count(dev, sset);
+        if (ops->get_sset_count) {
+                count = ops->get_sset_count(dev, sset);
+                if (count < 0)
+                        count = 0;
+        }
 
-        if (sset == ETH_SS_STATS && ds->ops->get_sset_count)
-                count += ds->ops->get_sset_count(ds, cpu_dp->index);
+        if (ds->ops->get_sset_count)
+                count += ds->ops->get_sset_count(ds, cpu_dp->index, sset);
 
         return count;
 }
@@ -65,18 +68,20 @@ static void dsa_master_get_strings(struct net_device *dev, uint32_t stringset,
         pfx[sizeof(pfx) - 1] = '_';
 
         if (ops->get_sset_count && ops->get_strings) {
-                mcount = ops->get_sset_count(dev, ETH_SS_STATS);
+                mcount = ops->get_sset_count(dev, stringset);
+                if (mcount < 0)
+                        mcount = 0;
                 ops->get_strings(dev, stringset, data);
         }
 
-        if (stringset == ETH_SS_STATS && ds->ops->get_strings) {
+        if (ds->ops->get_strings) {
                 ndata = data + mcount * len;
                 /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
                  * the output after to prepend our CPU port prefix we
                  * constructed earlier
                  */
-                ds->ops->get_strings(ds, port, ndata);
-                count = ds->ops->get_sset_count(ds, port);
+                ds->ops->get_strings(ds, port, stringset, ndata);
+                count = ds->ops->get_sset_count(ds, port, stringset);
                 for (i = 0; i < count; i++) {
                         memmove(ndata + (i * len + sizeof(pfx)),
                                 ndata + i * len, len - sizeof(pfx));
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 18561af7a8f1..f3fb3a0880b1 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -560,7 +560,8 @@ static void dsa_slave_get_strings(struct net_device *dev,
                 strncpy(data + 2 * len, "rx_packets", len);
                 strncpy(data + 3 * len, "rx_bytes", len);
                 if (ds->ops->get_strings)
-                        ds->ops->get_strings(ds, dp->index, data + 4 * len);
+                        ds->ops->get_strings(ds, dp->index, stringset,
+                                             data + 4 * len);
         }
 }
 
@@ -605,7 +606,7 @@ static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
 
                 count = 4;
                 if (ds->ops->get_sset_count)
-                        count += ds->ops->get_sset_count(ds, dp->index);
+                        count += ds->ops->get_sset_count(ds, dp->index, sset);
 
                 return count;
         }