[patch net-next RFC 5/6] mlxsw: reg: add the Monitoring Packet Sampling Configuration Register
From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-10-12 12:41:28
Subsystem:
mellanox ethernet switch drivers, networking drivers, the rest · Maintainers:
Ido Schimmel, Petr Machata, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Yotam Gigi <yotam.gi@gmail.com> The MPSC register allows to configure ingress packet sampling on specific port of the mlxsw device. The sampled packets are then trapped via PKT_SAMPLE trap. Signed-off-by: Yotam Gigi <redacted> Signed-off-by: Jiri Pirko <redacted> --- drivers/net/ethernet/mellanox/mlxsw/reg.h | 43 +++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index 6460c72..e657865 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h@@ -4832,6 +4832,47 @@ static inline void mlxsw_reg_mlcr_pack(char *payload, u8 local_port, MLXSW_REG_MLCR_DURATION_MAX : 0); } +/* MPSC - Monitoring Packet Sampling Configuration Register + * -------------------------------------------------------- + * MPSC Register is used to configure the Packet Sampling mechanism. + */ +#define MLXSW_REG_MPSC_ID 0x9080 +#define MLXSW_REG_MPSC_LEN 0x14 + +static const struct mlxsw_reg_info mlxsw_reg_mpsc = { + .id = MLXSW_REG_MPSC_ID, + .len = MLXSW_REG_MPSC_LEN, +}; + +/* reg_mpsc_local_port + * Local port number + * Not supported for CPU port + * Access: Index + */ +MLXSW_ITEM32(reg, mpsc, local_port, 0x00, 16, 8); + +/* reg_mpsc_e + * Enable sampling on port local_port + * Access: RW + */ +MLXSW_ITEM32(reg, mpsc, e, 0x04, 30, 1); + +/* reg_mpsc_rate + * Sampling rate = 1 out of rate packets (with randomization around + * the point). Valid values are: 1 to 3.5*10^9 + * Access: RW + */ +MLXSW_ITEM32(reg, mpsc, rate, 0x08, 0, 32); + +static inline void mlxsw_reg_mpsc_pack(char *payload, u8 local_port, bool e, + u32 rate) +{ + MLXSW_REG_ZERO(mpsc, payload); + mlxsw_reg_mpsc_local_port_set(payload, local_port); + mlxsw_reg_mpsc_e_set(payload, e); + mlxsw_reg_mpsc_rate_set(payload, rate); +} + /* SBPR - Shared Buffer Pools Register * ----------------------------------- * The SBPR configures and retrieves the shared buffer pools and configuration.
@@ -5367,6 +5408,8 @@ static inline const char *mlxsw_reg_id_str(u16 reg_id) return "MTMP"; case MLXSW_REG_MLCR_ID: return "MLCR"; + case MLXSW_REG_MPSC_ID: + return "MPSC"; case MLXSW_REG_SBPR_ID: return "SBPR"; case MLXSW_REG_SBCM_ID:
--
2.5.5