mlxsw: spectrum: Expose counter for all 16 TCs

Before MC-aware mode was enabled in commit 7b8195306694 ("mlxsw:
spectrum: Configure MC-aware mode on mlxsw ports"), only 8 traffic
classes were used. Under MC-aware regime, however, besides using TCs
0-7 for UC traffic, it additionally uses TCs 8-15 for BUM traffic. It
is therefore desirable to show counters for these TCs as well.

Update ethtool stats pool length, mlxsw_sp_port_get_strings() and
mlxsw_sp_port_get_stats() to include artifacts for all 16 TCs. For
consistency and simplicity, expose tc_no_buffer_discard_uc_tc for BUM
TCs as well, even though it ought to stay at 0 all the time.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 264e3aa..6070d15 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1972,9 +1972,10 @@ static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
 
 #define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
                                         MLXSW_SP_PORT_HW_RFC_2819_STATS_LEN + \
-                                        (MLXSW_SP_PORT_HW_PRIO_STATS_LEN + \
-                                         MLXSW_SP_PORT_HW_TC_STATS_LEN) * \
-                                        IEEE_8021QAZ_MAX_TCS)
+                                        (MLXSW_SP_PORT_HW_PRIO_STATS_LEN * \
+                                         IEEE_8021QAZ_MAX_TCS) + \
+                                        (MLXSW_SP_PORT_HW_TC_STATS_LEN * \
+                                         TC_MAX_QUEUE))
 
 static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
 {
@@ -2020,7 +2021,7 @@ static void mlxsw_sp_port_get_strings(struct net_device *dev,
                for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
                        mlxsw_sp_port_get_prio_strings(&p, i);
 
-               for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
+               for (i = 0; i < TC_MAX_QUEUE; i++)
                        mlxsw_sp_port_get_tc_strings(&p, i);
 
                break;
@@ -2125,7 +2126,7 @@ static void mlxsw_sp_port_get_stats(struct net_device *dev,
        }
 
        /* Per-TC Counters */
-       for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
+       for (i = 0; i < TC_MAX_QUEUE; i++) {
                __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_TC_CNT, i,
                                          data, data_index);
                data_index += MLXSW_SP_PORT_HW_TC_STATS_LEN;