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net: dsa: add MRP support 

Add support for offloading MRP in HW. Currently implement the switchdev
calls 'SWITCHDEV_OBJ_ID_MRP', 'SWITCHDEV_OBJ_ID_RING_ROLE_MRP',
to allow to create MRP instances and to set the role of these instances.

Add DSA_NOTIFIER_MRP_ADD/DEL and DSA_NOTIFIER_MRP_ADD/DEL_RING_ROLE
which calls to .port_mrp_add/del and .port_mrp_add/del_ring_role in the
DSA driver for the switch.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Horatiu Vultur 2021-02-16 22:42:04 +01:00 committed by David S. Miller
parent d8ea7ff399
commit c595c4330d
5 changed files with 213 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/net/dsa.h
View File

@ -792,6 +792,18 @@ struct dsa_switch_ops {
struct net_device *hsr);
int (*port_hsr_leave)(struct dsa_switch *ds, int port,
struct net_device *hsr);
/*
* MRP integration
*/
int (*port_mrp_add)(struct dsa_switch *ds, int port,
const struct switchdev_obj_mrp *mrp);
int (*port_mrp_del)(struct dsa_switch *ds, int port,
const struct switchdev_obj_mrp *mrp);
int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port,
const struct switchdev_obj_ring_role_mrp *mrp);
int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port,
const struct switchdev_obj_ring_role_mrp *mrp);
};
#define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \

26
net/dsa/dsa_priv.h
View File

@ -31,6 +31,10 @@ enum {
DSA_NOTIFIER_VLAN_DEL,
DSA_NOTIFIER_MTU,
DSA_NOTIFIER_TAG_PROTO,
DSA_NOTIFIER_MRP_ADD,
DSA_NOTIFIER_MRP_DEL,
DSA_NOTIFIER_MRP_ADD_RING_ROLE,
DSA_NOTIFIER_MRP_DEL_RING_ROLE,
};
/* DSA_NOTIFIER_AGEING_TIME */
@ -91,6 +95,20 @@ struct dsa_notifier_tag_proto_info {
const struct dsa_device_ops *tag_ops;
};
/* DSA_NOTIFIER_MRP_* */
struct dsa_notifier_mrp_info {
const struct switchdev_obj_mrp *mrp;
int sw_index;
int port;
};
/* DSA_NOTIFIER_MRP_* */
struct dsa_notifier_mrp_ring_role_info {
const struct switchdev_obj_ring_role_mrp *mrp;
int sw_index;
int port;
};
struct dsa_switchdev_event_work {
struct dsa_switch *ds;
int port;
@ -198,6 +216,14 @@ int dsa_port_vlan_add(struct dsa_port *dp,
struct netlink_ext_ack *extack);
int dsa_port_vlan_del(struct dsa_port *dp,
const struct switchdev_obj_port_vlan *vlan);
int dsa_port_mrp_add(const struct dsa_port *dp,
const struct switchdev_obj_mrp *mrp);
int dsa_port_mrp_del(const struct dsa_port *dp,
const struct switchdev_obj_mrp *mrp);
int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
const struct switchdev_obj_ring_role_mrp *mrp);
int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
const struct switchdev_obj_ring_role_mrp *mrp);
int dsa_port_link_register_of(struct dsa_port *dp);
void dsa_port_link_unregister_of(struct dsa_port *dp);
int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr);

48
net/dsa/port.c
View File

@ -564,6 +564,54 @@ int dsa_port_vlan_del(struct dsa_port *dp,
return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
}
int dsa_port_mrp_add(const struct dsa_port *dp,
const struct switchdev_obj_mrp *mrp)
{
struct dsa_notifier_mrp_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
.mrp = mrp,
};
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD, &info);
}
int dsa_port_mrp_del(const struct dsa_port *dp,
const struct switchdev_obj_mrp *mrp)
{
struct dsa_notifier_mrp_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
.mrp = mrp,
};
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL, &info);
}
int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct dsa_notifier_mrp_ring_role_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
.mrp = mrp,
};
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD_RING_ROLE, &info);
}
int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct dsa_notifier_mrp_ring_role_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
.mrp = mrp,
};
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL_RING_ROLE, &info);
}
void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
const struct dsa_device_ops *tag_ops)
{

22
net/dsa/slave.c
View File

@ -404,6 +404,17 @@ static int dsa_slave_port_obj_add(struct net_device *dev,
case SWITCHDEV_OBJ_ID_PORT_VLAN:
err = dsa_slave_vlan_add(dev, obj, extack);
break;
case SWITCHDEV_OBJ_ID_MRP:
if (!dsa_port_offloads_netdev(dp, obj->orig_dev))
return -EOPNOTSUPP;
err = dsa_port_mrp_add(dp, SWITCHDEV_OBJ_MRP(obj));
break;
case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:
if (!dsa_port_offloads_netdev(dp, obj->orig_dev))
return -EOPNOTSUPP;
err = dsa_port_mrp_add_ring_role(dp,
SWITCHDEV_OBJ_RING_ROLE_MRP(obj));
break;
default:
err = -EOPNOTSUPP;
break;
@ -461,6 +472,17 @@ static int dsa_slave_port_obj_del(struct net_device *dev,
case SWITCHDEV_OBJ_ID_PORT_VLAN:
err = dsa_slave_vlan_del(dev, obj);
break;
case SWITCHDEV_OBJ_ID_MRP:
if (!dsa_port_offloads_netdev(dp, obj->orig_dev))
return -EOPNOTSUPP;
err = dsa_port_mrp_del(dp, SWITCHDEV_OBJ_MRP(obj));
break;
case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:
if (!dsa_port_offloads_netdev(dp, obj->orig_dev))
return -EOPNOTSUPP;
err = dsa_port_mrp_del_ring_role(dp,
SWITCHDEV_OBJ_RING_ROLE_MRP(obj));
break;
default:
err = -EOPNOTSUPP;
break;

105
net/dsa/switch.c
View File

@ -372,6 +372,99 @@ static int dsa_switch_change_tag_proto(struct dsa_switch *ds,
return 0;
}
static bool dsa_switch_mrp_match(struct dsa_switch *ds, int port,
struct dsa_notifier_mrp_info *info)
{
if (ds->index == info->sw_index && port == info->port)
return true;
if (dsa_is_dsa_port(ds, port))
return true;
return false;
}
static int dsa_switch_mrp_add(struct dsa_switch *ds,
struct dsa_notifier_mrp_info *info)
{
int err = 0;
int port;
if (!ds->ops->port_mrp_add)
return -EOPNOTSUPP;
for (port = 0; port < ds->num_ports; port++) {
if (dsa_switch_mrp_match(ds, port, info)) {
err = ds->ops->port_mrp_add(ds, port, info->mrp);
if (err)
break;
}
}
return err;
}
static int dsa_switch_mrp_del(struct dsa_switch *ds,
struct dsa_notifier_mrp_info *info)
{
if (!ds->ops->port_mrp_del)
return -EOPNOTSUPP;
if (ds->index == info->sw_index)
return ds->ops->port_mrp_del(ds, info->port, info->mrp);
return 0;
}
static bool
dsa_switch_mrp_ring_role_match(struct dsa_switch *ds, int port,
struct dsa_notifier_mrp_ring_role_info *info)
{
if (ds->index == info->sw_index && port == info->port)
return true;
if (dsa_is_dsa_port(ds, port))
return true;
return false;
}
static int
dsa_switch_mrp_add_ring_role(struct dsa_switch *ds,
struct dsa_notifier_mrp_ring_role_info *info)
{
int err = 0;
int port;
if (!ds->ops->port_mrp_add)
return -EOPNOTSUPP;
for (port = 0; port < ds->num_ports; port++) {
if (dsa_switch_mrp_ring_role_match(ds, port, info)) {
err = ds->ops->port_mrp_add_ring_role(ds, port,
info->mrp);
if (err)
break;
}
}
return err;
}
static int
dsa_switch_mrp_del_ring_role(struct dsa_switch *ds,
struct dsa_notifier_mrp_ring_role_info *info)
{
if (!ds->ops->port_mrp_del)
return -EOPNOTSUPP;
if (ds->index == info->sw_index)
return ds->ops->port_mrp_del_ring_role(ds, info->port,
info->mrp);
return 0;
}
static int dsa_switch_event(struct notifier_block *nb,
unsigned long event, void *info)
{
@ -427,6 +520,18 @@ static int dsa_switch_event(struct notifier_block *nb,
case DSA_NOTIFIER_TAG_PROTO:
err = dsa_switch_change_tag_proto(ds, info);
break;
case DSA_NOTIFIER_MRP_ADD:
err = dsa_switch_mrp_add(ds, info);
break;
case DSA_NOTIFIER_MRP_DEL:
err = dsa_switch_mrp_del(ds, info);
break;
case DSA_NOTIFIER_MRP_ADD_RING_ROLE:
err = dsa_switch_mrp_add_ring_role(ds, info);
break;
case DSA_NOTIFIER_MRP_DEL_RING_ROLE:
err = dsa_switch_mrp_del_ring_role(ds, info);
break;
default:
err = -EOPNOTSUPP;
break;