Commit 7ed674bc authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller

mlxsw: spectrum: Expose per-priority counters via ethtool

Expose per-priority bytes / packets / PFC packets counters via ethtool.

These counters are very useful when debugging QoS functionality and
provide a better insight into the device's forwarding plane.
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 09714275
...@@ -899,7 +899,7 @@ struct mlxsw_sp_port_hw_stats { ...@@ -899,7 +899,7 @@ struct mlxsw_sp_port_hw_stats {
u64 (*getter)(char *payload); u64 (*getter)(char *payload);
}; };
static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = { static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
{ {
.str = "a_frames_transmitted_ok", .str = "a_frames_transmitted_ok",
.getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get, .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
...@@ -980,6 +980,58 @@ static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = { ...@@ -980,6 +980,58 @@ static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
#define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats) #define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_prio_stats[] = {
{
.str = "rx_octets_prio",
.getter = mlxsw_reg_ppcnt_rx_octets_get,
},
{
.str = "rx_frames_prio",
.getter = mlxsw_reg_ppcnt_rx_frames_get,
},
{
.str = "tx_octets_prio",
.getter = mlxsw_reg_ppcnt_tx_octets_get,
},
{
.str = "tx_frames_prio",
.getter = mlxsw_reg_ppcnt_tx_frames_get,
},
{
.str = "rx_pause_prio",
.getter = mlxsw_reg_ppcnt_rx_pause_get,
},
{
.str = "rx_pause_duration_prio",
.getter = mlxsw_reg_ppcnt_rx_pause_duration_get,
},
{
.str = "tx_pause_prio",
.getter = mlxsw_reg_ppcnt_tx_pause_get,
},
{
.str = "tx_pause_duration_prio",
.getter = mlxsw_reg_ppcnt_tx_pause_duration_get,
},
};
#define MLXSW_SP_PORT_HW_PRIO_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_prio_stats)
#define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
MLXSW_SP_PORT_HW_PRIO_STATS_LEN * \
IEEE_8021QAZ_MAX_TCS)
static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
{
int i;
for (i = 0; i < MLXSW_SP_PORT_HW_PRIO_STATS_LEN; i++) {
snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
mlxsw_sp_port_hw_prio_stats[i].str, prio);
*p += ETH_GSTRING_LEN;
}
}
static void mlxsw_sp_port_get_strings(struct net_device *dev, static void mlxsw_sp_port_get_strings(struct net_device *dev,
u32 stringset, u8 *data) u32 stringset, u8 *data)
{ {
...@@ -993,6 +1045,10 @@ static void mlxsw_sp_port_get_strings(struct net_device *dev, ...@@ -993,6 +1045,10 @@ static void mlxsw_sp_port_get_strings(struct net_device *dev,
ETH_GSTRING_LEN); ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN; p += ETH_GSTRING_LEN;
} }
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
mlxsw_sp_port_get_prio_strings(&p, i);
break; break;
} }
} }
...@@ -1020,27 +1076,69 @@ static int mlxsw_sp_port_set_phys_id(struct net_device *dev, ...@@ -1020,27 +1076,69 @@ static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl); return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
} }
static void mlxsw_sp_port_get_stats(struct net_device *dev, static int
struct ethtool_stats *stats, u64 *data) mlxsw_sp_get_hw_stats_by_group(struct mlxsw_sp_port_hw_stats **p_hw_stats,
int *p_len, enum mlxsw_reg_ppcnt_grp grp)
{
switch (grp) {
case MLXSW_REG_PPCNT_IEEE_8023_CNT:
*p_hw_stats = mlxsw_sp_port_hw_stats;
*p_len = MLXSW_SP_PORT_HW_STATS_LEN;
break;
case MLXSW_REG_PPCNT_PRIO_CNT:
*p_hw_stats = mlxsw_sp_port_hw_prio_stats;
*p_len = MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
break;
default:
WARN_ON(1);
return -ENOTSUPP;
}
return 0;
}
static void __mlxsw_sp_port_get_stats(struct net_device *dev,
enum mlxsw_reg_ppcnt_grp grp, int prio,
u64 *data, int data_index)
{ {
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port_hw_stats *hw_stats;
char ppcnt_pl[MLXSW_REG_PPCNT_LEN]; char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
int i; int i, len;
int err; int err;
mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
MLXSW_REG_PPCNT_IEEE_8023_CNT, 0); if (err)
return;
mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl); err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) for (i = 0; i < len; i++)
data[i] = !err ? mlxsw_sp_port_hw_stats[i].getter(ppcnt_pl) : 0; data[data_index + i] = !err ? hw_stats[i].getter(ppcnt_pl) : 0;
}
static void mlxsw_sp_port_get_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
int i, data_index = 0;
/* IEEE 802.3 Counters */
__mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT, 0,
data, data_index);
data_index = MLXSW_SP_PORT_HW_STATS_LEN;
/* Per-Priority Counters */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
__mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_PRIO_CNT, i,
data, data_index);
data_index += MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
}
} }
static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset) static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
{ {
switch (sset) { switch (sset) {
case ETH_SS_STATS: case ETH_SS_STATS:
return MLXSW_SP_PORT_HW_STATS_LEN; return MLXSW_SP_PORT_ETHTOOL_STATS_LEN;
default: default:
return -EOPNOTSUPP; return -EOPNOTSUPP;
} }
......
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