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mlxsw: reg: Extend mirroring registers with probability rate field 

The MPAR and MPAGR registers are used to configure the binding between
the mirroring trigger (e.g., received packet) and the SPAN agent. Add
probability rate field, which will allow us to support sampling by
mirroring to the CPU.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2021-03-11 14:24:12 +02:00 committed by David S. Miller
parent 5c7659eba8
commit fa3faeb7ae
2 changed files with 17 additions and 2 deletions
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17
drivers/net/ethernet/mellanox/mlxsw/reg.h
View File

@ -9925,15 +9925,28 @@ MLXSW_ITEM32(reg, mpar, enable, 0x04, 31, 1);
*/
MLXSW_ITEM32(reg, mpar, pa_id, 0x04, 0, 4);
#define MLXSW_REG_MPAR_RATE_MAX 3500000000UL
/* reg_mpar_probability_rate
* Sampling rate.
* Valid values are: 1 to 3.5*10^9
* Value of 1 means "sample all". Default is 1.
* Reserved when Spectrum-1.
* Access: RW
*/
MLXSW_ITEM32(reg, mpar, probability_rate, 0x08, 0, 32);
static inline void mlxsw_reg_mpar_pack(char *payload, u8 local_port,
enum mlxsw_reg_mpar_i_e i_e,
bool enable, u8 pa_id)
bool enable, u8 pa_id,
u32 probability_rate)
{
MLXSW_REG_ZERO(mpar, payload);
mlxsw_reg_mpar_local_port_set(payload, local_port);
mlxsw_reg_mpar_enable_set(payload, enable);
mlxsw_reg_mpar_i_e_set(payload, i_e);
mlxsw_reg_mpar_pa_id_set(payload, pa_id);
mlxsw_reg_mpar_probability_rate_set(payload, probability_rate);
}
/* MGIR - Management General Information Register
@ -10577,6 +10590,8 @@ MLXSW_ITEM32(reg, mpagr, trigger, 0x00, 0, 4);
*/
MLXSW_ITEM32(reg, mpagr, pa_id, 0x04, 0, 4);
#define MLXSW_REG_MPAGR_RATE_MAX 3500000000UL
/* reg_mpagr_probability_rate
* Sampling rate.
* Valid values are: 1 to 3.5*10^9

2
drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
View File

@ -1232,7 +1232,7 @@ __mlxsw_sp_span_trigger_port_bind(struct mlxsw_sp_span *span,
}
mlxsw_reg_mpar_pack(mpar_pl, trigger_entry->local_port, i_e, enable,
trigger_entry->parms.span_id);
trigger_entry->parms.span_id, 1);
return mlxsw_reg_write(span->mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
}