Commit fa3faeb7 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

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: default avatarIdo Schimmel <idosch@nvidia.com>
Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5c7659eb

drivers/net/ethernet/mellanox/mlxsw/reg.h

+16 −1
Original line number Diff line number Diff line
@@ -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

drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

}