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mlxsw: spectrum: qdiscs: Add priority map per qdisc
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Add priority map per qdisc, to indicate which priorities are being
directed through this qdisc.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Nogah Frankel authored and David S. Miller committed Feb 28, 2018
1 parent 2f88047 commit 1631ab2
Showing 1 changed file with 7 additions and 0 deletions.
7 changes: 7 additions & 0 deletions drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,7 @@ struct mlxsw_sp_qdisc_ops {
struct mlxsw_sp_qdisc {
u32 handle;
u8 tclass_num;
u8 prio_bitmap;
union {
struct red_stats red;
} xstats_base;
Expand Down Expand Up @@ -467,6 +468,7 @@ mlxsw_sp_qdisc_prio_destroy(struct mlxsw_sp_port *mlxsw_sp_port,
MLXSW_SP_PORT_DEFAULT_TCLASS);
mlxsw_sp_qdisc_destroy(mlxsw_sp_port,
&mlxsw_sp_port->tclass_qdiscs[i]);
mlxsw_sp_port->tclass_qdiscs[i].prio_bitmap = 0;
}

return 0;
Expand Down Expand Up @@ -494,11 +496,15 @@ mlxsw_sp_qdisc_prio_replace(struct mlxsw_sp_port *mlxsw_sp_port,
int tclass, i;
int err;

for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
mlxsw_sp_port->tclass_qdiscs[i].prio_bitmap = 0;

for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
tclass = MLXSW_SP_PRIO_BAND_TO_TCLASS(p->priomap[i]);
err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, tclass);
if (err)
return err;
mlxsw_sp_port->tclass_qdiscs[tclass].prio_bitmap |= BIT(i);
}

return 0;
Expand Down Expand Up @@ -628,6 +634,7 @@ int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port)
goto err_root_qdisc_init;

mlxsw_sp_port->root_qdisc = mlxsw_sp_qdisc;
mlxsw_sp_port->root_qdisc->prio_bitmap = 0xff;
mlxsw_sp_port->root_qdisc->tclass_num = MLXSW_SP_PORT_DEFAULT_TCLASS;

mlxsw_sp_qdisc = kzalloc(sizeof(*mlxsw_sp_qdisc) * IEEE_8021QAZ_MAX_TCS,
Expand Down

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