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net: dsa: refactor matchall mirred action to separate function

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Make room for other actions for the matchall filter by keeping the
mirred argument parsing self-contained in its own function.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2020-03-29 14:51:58 +03:00 committed by David S. Miller
parent c9a7fe1238
commit e13c207528
1 changed files with 42 additions and 32 deletions
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74
net/dsa/slave.c
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@ -842,24 +842,27 @@ dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie)
return NULL;
}
static int dsa_slave_add_cls_matchall(struct net_device *dev,
struct tc_cls_matchall_offload *cls,
bool ingress)
static int
dsa_slave_add_cls_matchall_mirred(struct net_device *dev,
struct tc_cls_matchall_offload *cls,
bool ingress)
{
struct dsa_port *dp = dsa_slave_to_port(dev);
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_mall_mirror_tc_entry *mirror;
struct dsa_mall_tc_entry *mall_tc_entry;
__be16 protocol = cls->common.protocol;
struct dsa_switch *ds = dp->ds;
struct flow_action_entry *act;
struct dsa_port *to_dp;
int err = -EOPNOTSUPP;
int err;
act = &cls->rule->action.entries[0];
if (!ds->ops->port_mirror_add)
return err;
if (!flow_offload_has_one_action(&cls->rule->action))
return err;
if (!act->dev)
return -EINVAL;
if (!flow_action_basic_hw_stats_check(&cls->rule->action,
cls->common.extack))
@ -867,38 +870,45 @@ static int dsa_slave_add_cls_matchall(struct net_device *dev,
act = &cls->rule->action.entries[0];
if (act->id == FLOW_ACTION_MIRRED && protocol == htons(ETH_P_ALL)) {
struct dsa_mall_mirror_tc_entry *mirror;
if (!dsa_slave_dev_check(act->dev))
return -EOPNOTSUPP;
if (!act->dev)
return -EINVAL;
mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
if (!mall_tc_entry)
return -ENOMEM;
if (!dsa_slave_dev_check(act->dev))
return -EOPNOTSUPP;
mall_tc_entry->cookie = cls->cookie;
mall_tc_entry->type = DSA_PORT_MALL_MIRROR;
mirror = &mall_tc_entry->mirror;
mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
if (!mall_tc_entry)
return -ENOMEM;
to_dp = dsa_slave_to_port(act->dev);
mall_tc_entry->cookie = cls->cookie;
mall_tc_entry->type = DSA_PORT_MALL_MIRROR;
mirror = &mall_tc_entry->mirror;
mirror->to_local_port = to_dp->index;
mirror->ingress = ingress;
to_dp = dsa_slave_to_port(act->dev);
mirror->to_local_port = to_dp->index;
mirror->ingress = ingress;
err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress);
if (err) {
kfree(mall_tc_entry);
return err;
}
list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress);
if (err) {
kfree(mall_tc_entry);
return err;
}
return 0;
list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
return err;
}
static int dsa_slave_add_cls_matchall(struct net_device *dev,
struct tc_cls_matchall_offload *cls,
bool ingress)
{
int err = -EOPNOTSUPP;
if (cls->common.protocol == htons(ETH_P_ALL) &&
flow_offload_has_one_action(&cls->rule->action) &&
cls->rule->action.entries[0].id == FLOW_ACTION_MIRRED)
err = dsa_slave_add_cls_matchall_mirred(dev, cls, ingress);
return err;
}
static void dsa_slave_del_cls_matchall(struct net_device *dev,