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mlxsw: spectrum: Add mlxsw_sp_span_ops.buffsize_get for Spectrum-3

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The buffer factor on Spectrum-3 is larger than on Spectrum-2. Add a new
callback and use it for mlxsw_sp->span_ops on Spectrum-3.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2020-02-26 09:39:20 +01:00 committed by David S. Miller
parent b401ff8541
commit 3b909c552a
1 changed files with 21 additions and 2 deletions
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23
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
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@ -4875,16 +4875,35 @@ static const struct mlxsw_sp_span_ops mlxsw_sp1_span_ops = {
};
#define MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR 38
#define MLXSW_SP3_SPAN_EG_MIRROR_BUFFER_FACTOR 50
static u32 __mlxsw_sp_span_buffsize_get(int mtu, u32 speed, u32 buffer_factor)
{
return 3 * mtu + buffer_factor * speed / 1000;
}
static u32 mlxsw_sp2_span_buffsize_get(int mtu, u32 speed)
{
return 3 * mtu + MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR * speed / 1000;
int factor = MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR;
return __mlxsw_sp_span_buffsize_get(mtu, speed, factor);
}
static const struct mlxsw_sp_span_ops mlxsw_sp2_span_ops = {
.buffsize_get = mlxsw_sp2_span_buffsize_get,
};
static u32 mlxsw_sp3_span_buffsize_get(int mtu, u32 speed)
{
int factor = MLXSW_SP3_SPAN_EG_MIRROR_BUFFER_FACTOR;
return __mlxsw_sp_span_buffsize_get(mtu, speed, factor);
}
static const struct mlxsw_sp_span_ops mlxsw_sp3_span_ops = {
.buffsize_get = mlxsw_sp3_span_buffsize_get,
};
u32 mlxsw_sp_span_buffsize_get(struct mlxsw_sp *mlxsw_sp, int mtu, u32 speed)
{
u32 buffsize = mlxsw_sp->span_ops->buffsize_get(speed, mtu);
@ -5163,7 +5182,7 @@ static int mlxsw_sp3_init(struct mlxsw_core *mlxsw_core,
mlxsw_sp->sb_vals = &mlxsw_sp2_sb_vals;
mlxsw_sp->port_type_speed_ops = &mlxsw_sp2_port_type_speed_ops;
mlxsw_sp->ptp_ops = &mlxsw_sp2_ptp_ops;
mlxsw_sp->span_ops = &mlxsw_sp2_span_ops;
mlxsw_sp->span_ops = &mlxsw_sp3_span_ops;
mlxsw_sp->lowest_shaper_bs = MLXSW_REG_QEEC_LOWEST_SHAPER_BS_SP3;
return mlxsw_sp_init(mlxsw_core, mlxsw_bus_info, extack);