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net: mscc: ocelot: refactor policer work out of ocelot_setup_tc_cls_matchall 

In preparation for adding port mirroring support to the ocelot driver,
the dispatching function ocelot_setup_tc_cls_matchall() must be free of
action-specific code. Move port policer creation and deletion to
separate functions.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Vladimir Oltean 2022-03-16 22:41:39 +02:00 committed by Jakub Kicinski
parent 2b341f7532
commit 4fa7210802
1 changed files with 71 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

110
drivers/net/ethernet/mscc/ocelot_net.c
View File

@ -216,14 +216,14 @@ int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
}
}
static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
struct tc_cls_matchall_offload *f,
bool ingress)
static int ocelot_setup_tc_cls_matchall_police(struct ocelot_port_private *priv,
struct tc_cls_matchall_offload *f,
bool ingress,
struct netlink_ext_ack *extack)
{
struct netlink_ext_ack *extack = f->common.extack;
struct flow_action_entry *action = &f->rule->action.entries[0];
struct ocelot *ocelot = priv->port.ocelot;
struct ocelot_policer pol = { 0 };
struct flow_action_entry *action;
int port = priv->chip_port;
int err;
@ -232,6 +232,58 @@ static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
return -EOPNOTSUPP;
}
if (priv->tc.police_id && priv->tc.police_id != f->cookie) {
NL_SET_ERR_MSG_MOD(extack,
"Only one policer per port is supported");
return -EEXIST;
}
err = ocelot_policer_validate(&f->rule->action, action, extack);
if (err)
return err;
pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;
pol.burst = action->police.burst;
err = ocelot_port_policer_add(ocelot, port, &pol);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Could not add policer");
return err;
}
priv->tc.police_id = f->cookie;
priv->tc.offload_cnt++;
return 0;
}
static int ocelot_del_tc_cls_matchall_police(struct ocelot_port_private *priv,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->chip_port;
int err;
err = ocelot_port_policer_del(ocelot, port);
if (err) {
NL_SET_ERR_MSG_MOD(extack,
"Could not delete policer");
return err;
}
priv->tc.police_id = 0;
priv->tc.offload_cnt--;
return 0;
}
static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
struct tc_cls_matchall_offload *f,
bool ingress)
{
struct netlink_ext_ack *extack = f->common.extack;
struct flow_action_entry *action;
switch (f->command) {
case TC_CLSMATCHALL_REPLACE:
if (!flow_offload_has_one_action(&f->rule->action)) {
@ -248,47 +300,27 @@ static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
action = &f->rule->action.entries[0];
if (action->id != FLOW_ACTION_POLICE) {
switch (action->id) {
case FLOW_ACTION_POLICE:
return ocelot_setup_tc_cls_matchall_police(priv, f,
ingress,
extack);
break;
default:
NL_SET_ERR_MSG_MOD(extack, "Unsupported action");
return -EOPNOTSUPP;
}
if (priv->tc.police_id && priv->tc.police_id != f->cookie) {
NL_SET_ERR_MSG_MOD(extack,
"Only one policer per port is supported");
return -EEXIST;
}
err = ocelot_policer_validate(&f->rule->action, action,
extack);
if (err)
return err;
pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;
pol.burst = action->police.burst;
err = ocelot_port_policer_add(ocelot, port, &pol);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Could not add policer");
return err;
}
priv->tc.police_id = f->cookie;
priv->tc.offload_cnt++;
return 0;
break;
case TC_CLSMATCHALL_DESTROY:
if (priv->tc.police_id != f->cookie)
action = &f->rule->action.entries[0];
if (f->cookie == priv->tc.police_id)
return ocelot_del_tc_cls_matchall_police(priv, extack);
else
return -ENOENT;
err = ocelot_port_policer_del(ocelot, port);
if (err) {
NL_SET_ERR_MSG_MOD(extack,
"Could not delete policer");
return err;
}
priv->tc.police_id = 0;
priv->tc.offload_cnt--;
return 0;
break;
case TC_CLSMATCHALL_STATS:
default:
return -EOPNOTSUPP;