Commit 46a3615b authored by Nogah Frankel's avatar Nogah Frankel Committed by David S. Miller

mlxsw: spectrum: qdiscs: Support PRIO qdisc offload

Add support for offloading PRIO qdisc as root qdisc.
The support is for up to 8 bands.
Routed packets priority is determined by the DSCP field with the default
translations. Bridged packets priority is determined by the PCP field, if
exist, otherwise it is set to 0.
Since both options have only priorities 0-7, higher priorities mapping are
being ignored.
Signed-off-by: default avatarNogah Frankel <nogahf@mellanox.com>
Reviewed-by: default avatarYuval Mintz <yuvalm@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7fdb61b4
......@@ -1830,6 +1830,8 @@ static int mlxsw_sp_setup_tc(struct net_device *dev, enum tc_setup_type type,
return mlxsw_sp_setup_tc_block(mlxsw_sp_port, type_data);
case TC_SETUP_QDISC_RED:
return mlxsw_sp_setup_tc_red(mlxsw_sp_port, type_data);
case TC_SETUP_QDISC_PRIO:
return mlxsw_sp_setup_tc_prio(mlxsw_sp_port, type_data);
default:
return -EOPNOTSUPP;
}
......
......@@ -565,6 +565,8 @@ int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port);
void mlxsw_sp_tc_qdisc_fini(struct mlxsw_sp_port *mlxsw_sp_port);
int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_red_qopt_offload *p);
int mlxsw_sp_setup_tc_prio(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_prio_qopt_offload *p);
/* spectrum_fid.c */
int mlxsw_sp_fid_flood_set(struct mlxsw_sp_fid *fid,
......
......@@ -41,9 +41,12 @@
#include "spectrum.h"
#include "reg.h"
#define MLXSW_SP_PRIO_BAND_TO_TCLASS(band) (IEEE_8021QAZ_MAX_TCS - band - 1)
enum mlxsw_sp_qdisc_type {
MLXSW_SP_QDISC_NO_QDISC,
MLXSW_SP_QDISC_RED,
MLXSW_SP_QDISC_PRIO,
};
struct mlxsw_sp_qdisc_ops {
......@@ -403,6 +406,85 @@ int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
}
}
static int
mlxsw_sp_qdisc_prio_destroy(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_qdisc *mlxsw_sp_qdisc)
{
int i;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i,
MLXSW_SP_PORT_DEFAULT_TCLASS);
return 0;
}
static int
mlxsw_sp_qdisc_prio_check_params(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
void *params)
{
struct tc_prio_qopt_offload_params *p = params;
if (p->bands > IEEE_8021QAZ_MAX_TCS)
return -EOPNOTSUPP;
return 0;
}
static int
mlxsw_sp_qdisc_prio_replace(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
void *params)
{
struct tc_prio_qopt_offload_params *p = params;
int tclass, i;
int err;
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;
}
return 0;
}
static struct mlxsw_sp_qdisc_ops mlxsw_sp_qdisc_ops_prio = {
.type = MLXSW_SP_QDISC_PRIO,
.check_params = mlxsw_sp_qdisc_prio_check_params,
.replace = mlxsw_sp_qdisc_prio_replace,
.destroy = mlxsw_sp_qdisc_prio_destroy,
};
int mlxsw_sp_setup_tc_prio(struct mlxsw_sp_port *mlxsw_sp_port,
struct tc_prio_qopt_offload *p)
{
struct mlxsw_sp_qdisc *mlxsw_sp_qdisc;
if (p->parent != TC_H_ROOT)
return -EOPNOTSUPP;
mlxsw_sp_qdisc = mlxsw_sp_port->root_qdisc;
if (p->command == TC_PRIO_REPLACE)
return mlxsw_sp_qdisc_replace(mlxsw_sp_port, p->handle,
mlxsw_sp_qdisc,
&mlxsw_sp_qdisc_ops_prio,
&p->replace_params);
if (!mlxsw_sp_qdisc_compare(mlxsw_sp_qdisc, p->handle,
MLXSW_SP_QDISC_PRIO))
return -EOPNOTSUPP;
switch (p->command) {
case TC_PRIO_DESTROY:
return mlxsw_sp_qdisc_destroy(mlxsw_sp_port, mlxsw_sp_qdisc);
default:
return -EOPNOTSUPP;
}
}
int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port->root_qdisc = kzalloc(sizeof(*mlxsw_sp_port->root_qdisc),
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment