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Message-ID: <20241028044828.1639668-1-rosenp@gmail.com>
Date: Sun, 27 Oct 2024 21:48:28 -0700
From: Rosen Penev <rosenp@...il.com>
To: netdev@...r.kernel.org
Cc: Florian Fainelli <florian.fainelli@...adcom.com>,
Andrew Lunn <andrew@...n.ch>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Kurt Kanzenbach <kurt@...utronix.de>,
Woojung Huh <woojung.huh@...rochip.com>,
UNGLinuxDriver@...rochip.com (maintainer:MICROCHIP KSZ SERIES ETHERNET SWITCH DRIVER),
Clément Léger <clement.leger@...tlin.com>,
George McCollister <george.mccollister@...il.com>,
Simon Horman <horms@...nel.org>,
linux-kernel@...r.kernel.org (open list),
linux-renesas-soc@...r.kernel.org (open list:RENESAS RZ/N1 A5PSW SWITCH DRIVER)
Subject: [PATCHv4 net-next] net: dsa: use ethtool string helpers
These are the preferred way to copy ethtool strings.
Avoids incrementing pointers all over the place.
Signed-off-by: Rosen Penev <rosenp@...il.com>
(for hellcreek driver)
Reviewed-by: Kurt Kanzenbach <kurt@...utronix.de>
---
v4: use double pointer parameters for mv88e6xxx
v3: remove curly braces from ksz_common.c
v2: remove curly braces from rzn1_a5psw.c
drivers/net/dsa/b53/b53_common.c | 3 +-
drivers/net/dsa/bcm_sf2.c | 4 +-
drivers/net/dsa/bcm_sf2.h | 4 +-
drivers/net/dsa/bcm_sf2_cfp.c | 22 +++------
drivers/net/dsa/dsa_loop.c | 3 +-
drivers/net/dsa/hirschmann/hellcreek.c | 8 +---
drivers/net/dsa/microchip/ksz_common.c | 6 +--
drivers/net/dsa/mv88e6xxx/chip.c | 57 +++++++++--------------
drivers/net/dsa/mv88e6xxx/chip.h | 6 +--
drivers/net/dsa/mv88e6xxx/serdes.c | 14 +++---
drivers/net/dsa/mv88e6xxx/serdes.h | 8 ++--
drivers/net/dsa/rzn1_a5psw.c | 6 +--
drivers/net/dsa/sja1105/sja1105_ethtool.c | 7 +--
drivers/net/dsa/xrs700x/xrs700x.c | 6 +--
net/dsa/user.c | 13 ++----
15 files changed, 64 insertions(+), 103 deletions(-)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index c39cb119e760..285785c942b0 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -989,8 +989,7 @@ void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset,
if (stringset == ETH_SS_STATS) {
for (i = 0; i < mib_size; i++)
- strscpy(data + i * ETH_GSTRING_LEN,
- mibs[i].name, ETH_GSTRING_LEN);
+ ethtool_puts(&data, mibs[i].name);
} else if (stringset == ETH_SS_PHY_STATS) {
phydev = b53_get_phy_device(ds, port);
if (!phydev)
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 9201f07839ad..43bde1f583ff 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -1183,8 +1183,8 @@ static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, int port,
int cnt = b53_get_sset_count(ds, port, stringset);
b53_get_strings(ds, port, stringset, data);
- bcm_sf2_cfp_get_strings(ds, port, stringset,
- data + cnt * ETH_GSTRING_LEN);
+ data += cnt * ETH_GSTRING_LEN;
+ bcm_sf2_cfp_get_strings(ds, port, stringset, &data);
}
static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, int port,
diff --git a/drivers/net/dsa/bcm_sf2.h b/drivers/net/dsa/bcm_sf2.h
index 4fda075a3449..be9f3b29019f 100644
--- a/drivers/net/dsa/bcm_sf2.h
+++ b/drivers/net/dsa/bcm_sf2.h
@@ -228,8 +228,8 @@ int bcm_sf2_set_rxnfc(struct dsa_switch *ds, int port,
int bcm_sf2_cfp_rst(struct bcm_sf2_priv *priv);
void bcm_sf2_cfp_exit(struct dsa_switch *ds);
int bcm_sf2_cfp_resume(struct dsa_switch *ds);
-void bcm_sf2_cfp_get_strings(struct dsa_switch *ds, int port,
- u32 stringset, uint8_t *data);
+void bcm_sf2_cfp_get_strings(struct dsa_switch *ds, int port, u32 stringset,
+ uint8_t **data);
void bcm_sf2_cfp_get_ethtool_stats(struct dsa_switch *ds, int port,
uint64_t *data);
int bcm_sf2_cfp_get_sset_count(struct dsa_switch *ds, int port, int sset);
diff --git a/drivers/net/dsa/bcm_sf2_cfp.c b/drivers/net/dsa/bcm_sf2_cfp.c
index c88ee3dd4299..e22362e6f0cd 100644
--- a/drivers/net/dsa/bcm_sf2_cfp.c
+++ b/drivers/net/dsa/bcm_sf2_cfp.c
@@ -1279,27 +1279,19 @@ static const struct bcm_sf2_cfp_stat {
},
};
-void bcm_sf2_cfp_get_strings(struct dsa_switch *ds, int port,
- u32 stringset, uint8_t *data)
+void bcm_sf2_cfp_get_strings(struct dsa_switch *ds, int port, u32 stringset,
+ uint8_t **data)
{
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
- unsigned int s = ARRAY_SIZE(bcm_sf2_cfp_stats);
- char buf[ETH_GSTRING_LEN];
- unsigned int i, j, iter;
+ unsigned int i, j;
if (stringset != ETH_SS_STATS)
return;
- for (i = 1; i < priv->num_cfp_rules; i++) {
- for (j = 0; j < s; j++) {
- snprintf(buf, sizeof(buf),
- "CFP%03d_%sCntr",
- i, bcm_sf2_cfp_stats[j].name);
- iter = (i - 1) * s + j;
- strscpy(data + iter * ETH_GSTRING_LEN,
- buf, ETH_GSTRING_LEN);
- }
- }
+ for (i = 1; i < priv->num_cfp_rules; i++)
+ for (j = 0; j < ARRAY_SIZE(bcm_sf2_cfp_stats); j++)
+ ethtool_sprintf(data, "CFP%03d_%sCntr", i,
+ bcm_sf2_cfp_stats[j].name);
}
void bcm_sf2_cfp_get_ethtool_stats(struct dsa_switch *ds, int port,
diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index c70ed67cc188..adbab544c60f 100644
--- a/drivers/net/dsa/dsa_loop.c
+++ b/drivers/net/dsa/dsa_loop.c
@@ -121,8 +121,7 @@ static void dsa_loop_get_strings(struct dsa_switch *ds, int port,
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);
+ ethtool_puts(&data, ps->ports[port].mib[i].name);
}
static void dsa_loop_get_ethtool_stats(struct dsa_switch *ds, int port,
diff --git a/drivers/net/dsa/hirschmann/hellcreek.c b/drivers/net/dsa/hirschmann/hellcreek.c
index d798f17cf7ea..283ec5a6e23c 100644
--- a/drivers/net/dsa/hirschmann/hellcreek.c
+++ b/drivers/net/dsa/hirschmann/hellcreek.c
@@ -294,12 +294,8 @@ static void hellcreek_get_strings(struct dsa_switch *ds, int port,
{
int i;
- for (i = 0; i < ARRAY_SIZE(hellcreek_counter); ++i) {
- const struct hellcreek_counter *counter = &hellcreek_counter[i];
-
- strscpy(data + i * ETH_GSTRING_LEN,
- counter->name, ETH_GSTRING_LEN);
- }
+ for (i = 0; i < ARRAY_SIZE(hellcreek_counter); ++i)
+ ethtool_puts(&data, hellcreek_counter[i].name);
}
static int hellcreek_get_sset_count(struct dsa_switch *ds, int port, int sset)
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 5290f5ad98f3..f73833e24622 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -2112,10 +2112,8 @@ static void ksz_get_strings(struct dsa_switch *ds, int port,
if (stringset != ETH_SS_STATS)
return;
- for (i = 0; i < dev->info->mib_cnt; i++) {
- memcpy(buf + i * ETH_GSTRING_LEN,
- dev->info->mib_names[i].string, ETH_GSTRING_LEN);
- }
+ for (i = 0; i < dev->info->mib_cnt; i++)
+ ethtool_puts(&buf, dev->info->mib_names[i].string);
}
/**
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 4f5193d86e65..4e8bbaa1ea1f 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1153,42 +1153,37 @@ static uint64_t _mv88e6xxx_get_ethtool_stat(struct mv88e6xxx_chip *chip,
return value;
}
-static int mv88e6xxx_stats_get_strings(struct mv88e6xxx_chip *chip,
- uint8_t *data, int types)
+static void mv88e6xxx_stats_get_strings(struct mv88e6xxx_chip *chip,
+ uint8_t **data, int types)
{
const struct mv88e6xxx_hw_stat *stat;
- int i, j;
+ int i;
- for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
+ for (i = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
stat = &mv88e6xxx_hw_stats[i];
- if (stat->type & types) {
- memcpy(data + j * ETH_GSTRING_LEN, stat->string,
- ETH_GSTRING_LEN);
- j++;
- }
+ if (stat->type & types)
+ ethtool_puts(data, stat->string);
}
-
- return j;
}
-static int mv88e6095_stats_get_strings(struct mv88e6xxx_chip *chip,
- uint8_t *data)
+static void mv88e6095_stats_get_strings(struct mv88e6xxx_chip *chip,
+ uint8_t **data)
{
- return mv88e6xxx_stats_get_strings(chip, data,
- STATS_TYPE_BANK0 | STATS_TYPE_PORT);
+ mv88e6xxx_stats_get_strings(chip, data,
+ STATS_TYPE_BANK0 | STATS_TYPE_PORT);
}
-static int mv88e6250_stats_get_strings(struct mv88e6xxx_chip *chip,
- uint8_t *data)
+static void mv88e6250_stats_get_strings(struct mv88e6xxx_chip *chip,
+ uint8_t **data)
{
- return mv88e6xxx_stats_get_strings(chip, data, STATS_TYPE_BANK0);
+ mv88e6xxx_stats_get_strings(chip, data, STATS_TYPE_BANK0);
}
-static int mv88e6320_stats_get_strings(struct mv88e6xxx_chip *chip,
- uint8_t *data)
+static void mv88e6320_stats_get_strings(struct mv88e6xxx_chip *chip,
+ uint8_t **data)
{
- return mv88e6xxx_stats_get_strings(chip, data,
- STATS_TYPE_BANK0 | STATS_TYPE_BANK1);
+ mv88e6xxx_stats_get_strings(chip, data,
+ STATS_TYPE_BANK0 | STATS_TYPE_BANK1);
}
static const uint8_t *mv88e6xxx_atu_vtu_stats_strings[] = {
@@ -1199,21 +1194,18 @@ static const uint8_t *mv88e6xxx_atu_vtu_stats_strings[] = {
"vtu_miss_violation",
};
-static void mv88e6xxx_atu_vtu_get_strings(uint8_t *data)
+static void mv88e6xxx_atu_vtu_get_strings(uint8_t **data)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(mv88e6xxx_atu_vtu_stats_strings); i++)
- strscpy(data + i * ETH_GSTRING_LEN,
- mv88e6xxx_atu_vtu_stats_strings[i],
- ETH_GSTRING_LEN);
+ ethtool_puts(data, mv88e6xxx_atu_vtu_stats_strings[i]);
}
static void mv88e6xxx_get_strings(struct dsa_switch *ds, int port,
u32 stringset, uint8_t *data)
{
struct mv88e6xxx_chip *chip = ds->priv;
- int count = 0;
if (stringset != ETH_SS_STATS)
return;
@@ -1221,15 +1213,12 @@ static void mv88e6xxx_get_strings(struct dsa_switch *ds, int port,
mv88e6xxx_reg_lock(chip);
if (chip->info->ops->stats_get_strings)
- count = chip->info->ops->stats_get_strings(chip, data);
+ chip->info->ops->stats_get_strings(chip, &data);
- if (chip->info->ops->serdes_get_strings) {
- data += count * ETH_GSTRING_LEN;
- count = chip->info->ops->serdes_get_strings(chip, port, data);
- }
+ if (chip->info->ops->serdes_get_strings)
+ chip->info->ops->serdes_get_strings(chip, port, &data);
- data += count * ETH_GSTRING_LEN;
- mv88e6xxx_atu_vtu_get_strings(data);
+ mv88e6xxx_atu_vtu_get_strings(&data);
mv88e6xxx_reg_unlock(chip);
}
diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index 48399ab5355a..9fe8e8a7856b 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -606,7 +606,7 @@ struct mv88e6xxx_ops {
/* Return the number of strings describing statistics */
int (*stats_get_sset_count)(struct mv88e6xxx_chip *chip);
- int (*stats_get_strings)(struct mv88e6xxx_chip *chip, uint8_t *data);
+ void (*stats_get_strings)(struct mv88e6xxx_chip *chip, uint8_t **data);
size_t (*stats_get_stat)(struct mv88e6xxx_chip *chip, int port,
const struct mv88e6xxx_hw_stat *stat,
uint64_t *data);
@@ -633,8 +633,8 @@ struct mv88e6xxx_ops {
/* Statistics from the SERDES interface */
int (*serdes_get_sset_count)(struct mv88e6xxx_chip *chip, int port);
- int (*serdes_get_strings)(struct mv88e6xxx_chip *chip, int port,
- uint8_t *data);
+ int (*serdes_get_strings)(struct mv88e6xxx_chip *chip, int port,
+ uint8_t **data);
size_t (*serdes_get_stats)(struct mv88e6xxx_chip *chip, int port,
uint64_t *data);
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index 01ea53940786..b3330211edbc 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -132,8 +132,8 @@ int mv88e6352_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port)
return ARRAY_SIZE(mv88e6352_serdes_hw_stats);
}
-int mv88e6352_serdes_get_strings(struct mv88e6xxx_chip *chip,
- int port, uint8_t *data)
+int mv88e6352_serdes_get_strings(struct mv88e6xxx_chip *chip, int port,
+ uint8_t **data)
{
struct mv88e6352_serdes_hw_stat *stat;
int err, i;
@@ -144,8 +144,7 @@ int mv88e6352_serdes_get_strings(struct mv88e6xxx_chip *chip,
for (i = 0; i < ARRAY_SIZE(mv88e6352_serdes_hw_stats); i++) {
stat = &mv88e6352_serdes_hw_stats[i];
- memcpy(data + i * ETH_GSTRING_LEN, stat->string,
- ETH_GSTRING_LEN);
+ ethtool_puts(data, stat->string);
}
return ARRAY_SIZE(mv88e6352_serdes_hw_stats);
}
@@ -394,8 +393,8 @@ int mv88e6390_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port)
return ARRAY_SIZE(mv88e6390_serdes_hw_stats);
}
-int mv88e6390_serdes_get_strings(struct mv88e6xxx_chip *chip,
- int port, uint8_t *data)
+int mv88e6390_serdes_get_strings(struct mv88e6xxx_chip *chip, int port,
+ uint8_t **data)
{
struct mv88e6390_serdes_hw_stat *stat;
int i;
@@ -405,8 +404,7 @@ int mv88e6390_serdes_get_strings(struct mv88e6xxx_chip *chip,
for (i = 0; i < ARRAY_SIZE(mv88e6390_serdes_hw_stats); i++) {
stat = &mv88e6390_serdes_hw_stats[i];
- memcpy(data + i * ETH_GSTRING_LEN, stat->string,
- ETH_GSTRING_LEN);
+ ethtool_puts(data, stat->string);
}
return ARRAY_SIZE(mv88e6390_serdes_hw_stats);
}
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.h b/drivers/net/dsa/mv88e6xxx/serdes.h
index ff5c3ab31e15..ad887d8601bc 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.h
+++ b/drivers/net/dsa/mv88e6xxx/serdes.h
@@ -125,13 +125,13 @@ unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
unsigned int mv88e6390_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
int port);
int mv88e6352_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port);
-int mv88e6352_serdes_get_strings(struct mv88e6xxx_chip *chip,
- int port, uint8_t *data);
+int mv88e6352_serdes_get_strings(struct mv88e6xxx_chip *chip, int port,
+ uint8_t **data);
size_t mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
uint64_t *data);
int mv88e6390_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port);
-int mv88e6390_serdes_get_strings(struct mv88e6xxx_chip *chip,
- int port, uint8_t *data);
+int mv88e6390_serdes_get_strings(struct mv88e6xxx_chip *chip, int port,
+ uint8_t **data);
size_t mv88e6390_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
uint64_t *data);
diff --git a/drivers/net/dsa/rzn1_a5psw.c b/drivers/net/dsa/rzn1_a5psw.c
index 1135a32e4b7e..66974379334a 100644
--- a/drivers/net/dsa/rzn1_a5psw.c
+++ b/drivers/net/dsa/rzn1_a5psw.c
@@ -802,10 +802,8 @@ static void a5psw_get_strings(struct dsa_switch *ds, int port, u32 stringset,
if (stringset != ETH_SS_STATS)
return;
- for (u = 0; u < ARRAY_SIZE(a5psw_stats); u++) {
- memcpy(data + u * ETH_GSTRING_LEN, a5psw_stats[u].name,
- ETH_GSTRING_LEN);
- }
+ for (u = 0; u < ARRAY_SIZE(a5psw_stats); u++)
+ ethtool_puts(&data, a5psw_stats[u].name);
}
static void a5psw_get_ethtool_stats(struct dsa_switch *ds, int port,
diff --git a/drivers/net/dsa/sja1105/sja1105_ethtool.c b/drivers/net/dsa/sja1105/sja1105_ethtool.c
index decc6c931dc1..2ea64b1d026d 100644
--- a/drivers/net/dsa/sja1105/sja1105_ethtool.c
+++ b/drivers/net/dsa/sja1105/sja1105_ethtool.c
@@ -586,7 +586,6 @@ void sja1105_get_strings(struct dsa_switch *ds, int port,
{
struct sja1105_private *priv = ds->priv;
enum sja1105_counter_index max_ctr, i;
- char *p = data;
if (stringset != ETH_SS_STATS)
return;
@@ -597,10 +596,8 @@ void sja1105_get_strings(struct dsa_switch *ds, int port,
else
max_ctr = __MAX_SJA1105PQRS_PORT_COUNTER;
- for (i = 0; i < max_ctr; i++) {
- strscpy(p, sja1105_port_counters[i].name, ETH_GSTRING_LEN);
- p += ETH_GSTRING_LEN;
- }
+ for (i = 0; i < max_ctr; i++)
+ ethtool_puts(&data, sja1105_port_counters[i].name);
}
int sja1105_get_sset_count(struct dsa_switch *ds, int port, int sset)
diff --git a/drivers/net/dsa/xrs700x/xrs700x.c b/drivers/net/dsa/xrs700x/xrs700x.c
index de3b768f2ff9..4dbcc49a9e52 100644
--- a/drivers/net/dsa/xrs700x/xrs700x.c
+++ b/drivers/net/dsa/xrs700x/xrs700x.c
@@ -91,10 +91,8 @@ static void xrs700x_get_strings(struct dsa_switch *ds, int port,
if (stringset != ETH_SS_STATS)
return;
- for (i = 0; i < ARRAY_SIZE(xrs700x_mibs); i++) {
- strscpy(data, xrs700x_mibs[i].name, ETH_GSTRING_LEN);
- data += ETH_GSTRING_LEN;
- }
+ for (i = 0; i < ARRAY_SIZE(xrs700x_mibs); i++)
+ ethtool_puts(&data, xrs700x_mibs[i].name);
}
static int xrs700x_get_sset_count(struct dsa_switch *ds, int port, int sset)
diff --git a/net/dsa/user.c b/net/dsa/user.c
index 91a1fa5f8ab0..f7b0630dd2b6 100644
--- a/net/dsa/user.c
+++ b/net/dsa/user.c
@@ -1042,15 +1042,12 @@ static void dsa_user_get_strings(struct net_device *dev,
struct dsa_switch *ds = dp->ds;
if (stringset == ETH_SS_STATS) {
- int len = ETH_GSTRING_LEN;
-
- strscpy_pad(data, "tx_packets", len);
- strscpy_pad(data + len, "tx_bytes", len);
- strscpy_pad(data + 2 * len, "rx_packets", len);
- strscpy_pad(data + 3 * len, "rx_bytes", len);
+ ethtool_puts(&data, "tx_packets");
+ ethtool_puts(&data, "tx_bytes");
+ ethtool_puts(&data, "rx_packets");
+ ethtool_puts(&data, "rx_bytes");
if (ds->ops->get_strings)
- ds->ops->get_strings(ds, dp->index, stringset,
- data + 4 * len);
+ ds->ops->get_strings(ds, dp->index, stringset, data);
} else if (stringset == ETH_SS_TEST) {
net_selftest_get_strings(data);
}
--
2.47.0
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