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| author |   Petr Machata <petrm@mellanox.com> | 2019-12-29 13:48:28 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-01-02 15:40:14 -0800 |
| commit | 379a00dd21618f4354d41b1ac148188e005dbc05 (patch) | |
| tree | 979bdd5e65d6594320cd1adc2601a0db8aae9aac /drivers | |
| parent | mlxsw: reg: Add QoS Port DSCP to Priority Mapping Register (diff) | |
| download | linux-dev-379a00dd21618f4354d41b1ac148188e005dbc05.tar.xz linux-dev-379a00dd21618f4354d41b1ac148188e005dbc05.zip | |
mlxsw: spectrum_dcb: Allow setting default port priority
When APP TLV selector 1 (EtherType) is used with PID of 0, the
corresponding entry specifies "default application priority [...] when
application priority is not otherwise specified."
mlxsw currently supports this type of APP entry, but uses it only as a
fallback for unspecified DSCP rules. However non-IP traffic is prioritized
according to port-default priority, not according to the DSCP-to-prio
tables, and thus it's currently not possible to prioritize such traffic
correctly.
Extend the use of the abovementioned APP entry to also set default port
priority.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c index fe3bbba90659..db66f2b56a6d 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c @@ -369,6 +369,17 @@ err_update_qrwe: } static int +mlxsw_sp_port_dcb_app_update_qpdp(struct mlxsw_sp_port *mlxsw_sp_port, + u8 default_prio) +{ + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + char qpdp_pl[MLXSW_REG_QPDP_LEN]; + + mlxsw_reg_qpdp_pack(qpdp_pl, mlxsw_sp_port->local_port, default_prio); + return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpdp), qpdp_pl); +} + +static int mlxsw_sp_port_dcb_app_update_qpdpm(struct mlxsw_sp_port *mlxsw_sp_port, struct dcb_ieee_app_dscp_map *map) { @@ -405,6 +416,12 @@ static int mlxsw_sp_port_dcb_app_update(struct mlxsw_sp_port *mlxsw_sp_port) int err; default_prio = mlxsw_sp_port_dcb_app_default_prio(mlxsw_sp_port); + err = mlxsw_sp_port_dcb_app_update_qpdp(mlxsw_sp_port, default_prio); + if (err) { + netdev_err(mlxsw_sp_port->dev, "Couldn't configure port default priority\n"); + return err; + } + have_dscp = mlxsw_sp_port_dcb_app_prio_dscp_map(mlxsw_sp_port, &prio_map); |