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net: microchip: sparx5: Add support for rule count by cookie 

This adds support for TC clients to get the packet count for a TC filter
identified by its cookie.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steen Hegelund 2023-01-17 09:55:40 +01:00 committed by David S. Miller
parent 0d4cda805a
commit 27d293ccee
3 changed files with 47 additions and 56 deletions
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34
drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c
View File

@ -35,11 +35,6 @@ struct sparx5_tc_flower_parse_usage {
unsigned int used_keys;
};
struct sparx5_tc_rule_pkt_cnt {
u64 cookie;
u32 pkts;
};
/* These protocols have dedicated keysets in IS2 and a TC dissector
* ETH_P_ARP does not have a TC dissector
*/
@ -947,44 +942,21 @@ static int sparx5_tc_flower_destroy(struct net_device *ndev,
return err;
}
/* Collect packet counts from all rules with the same cookie */
static int sparx5_tc_rule_counter_cb(void *arg, struct vcap_rule *rule)
{
struct sparx5_tc_rule_pkt_cnt *rinfo = arg;
struct vcap_counter counter;
int err = 0;
if (rule->cookie == rinfo->cookie) {
err = vcap_rule_get_counter(rule, &counter);
if (err)
return err;
rinfo->pkts += counter.value;
/* Reset the rule counter */
counter.value = 0;
vcap_rule_set_counter(rule, &counter);
}
return err;
}
static int sparx5_tc_flower_stats(struct net_device *ndev,
struct flow_cls_offload *fco,
struct vcap_admin *admin)
{
struct sparx5_port *port = netdev_priv(ndev);
struct sparx5_tc_rule_pkt_cnt rinfo = {};
struct vcap_counter ctr = {};
struct vcap_control *vctrl;
ulong lastused = 0;
u64 drops = 0;
u32 pkts = 0;
int err;
rinfo.cookie = fco->cookie;
vctrl = port->sparx5->vcap_ctrl;
err = vcap_rule_iter(vctrl, sparx5_tc_rule_counter_cb, &rinfo);
err = vcap_get_rule_count_by_cookie(vctrl, &ctr, fco->cookie);
if (err)
return err;
pkts = rinfo.pkts;
flow_stats_update(&fco->stats, 0x0, pkts, drops, lastused,
flow_stats_update(&fco->stats, 0x0, ctr.value, 0, lastused,
FLOW_ACTION_HW_STATS_IMMEDIATE);
return err;
}

67
drivers/net/ethernet/microchip/vcap/vcap_api.c
View File

@ -2989,31 +2989,6 @@ void vcap_rule_set_counter_id(struct vcap_rule *rule, u32 counter_id)
}
EXPORT_SYMBOL_GPL(vcap_rule_set_counter_id);
/* Provide all rules via a callback interface */
int vcap_rule_iter(struct vcap_control *vctrl,
int (*callback)(void *, struct vcap_rule *), void *arg)
{
struct vcap_rule_internal *ri;
struct vcap_admin *admin;
int ret;
ret = vcap_api_check(vctrl);
if (ret)
return ret;
/* Iterate all rules in each VCAP instance */
list_for_each_entry(admin, &vctrl->list, list) {
list_for_each_entry(ri, &admin->rules, list) {
ret = callback(arg, &ri->data);
if (ret)
return ret;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(vcap_rule_iter);
int vcap_rule_set_counter(struct vcap_rule *rule, struct vcap_counter *ctr)
{
struct vcap_rule_internal *ri = to_intrule(rule);
@ -3105,6 +3080,48 @@ int vcap_rule_get_keysets(struct vcap_rule_internal *ri,
return -EINVAL;
}
/* Collect packet counts from all rules with the same cookie */
int vcap_get_rule_count_by_cookie(struct vcap_control *vctrl,
struct vcap_counter *ctr, u64 cookie)
{
struct vcap_rule_internal *ri;
struct vcap_counter temp = {};
struct vcap_admin *admin;
int err;
err = vcap_api_check(vctrl);
if (err)
return err;
/* Iterate all rules in each VCAP instance */
list_for_each_entry(admin, &vctrl->list, list) {
mutex_lock(&admin->lock);
list_for_each_entry(ri, &admin->rules, list) {
if (ri->data.cookie != cookie)
continue;
err = vcap_read_counter(ri, &temp);
if (err)
goto unlock;
ctr->value += temp.value;
/* Reset the rule counter */
temp.value = 0;
temp.sticky = 0;
err = vcap_write_counter(ri, &temp);
if (err)
goto unlock;
}
mutex_unlock(&admin->lock);
}
return err;
unlock:
mutex_unlock(&admin->lock);
return err;
}
EXPORT_SYMBOL_GPL(vcap_get_rule_count_by_cookie);
static int vcap_rule_mod_key(struct vcap_rule *rule,
enum vcap_key_field key,
enum vcap_field_type ftype,

2
drivers/net/ethernet/microchip/vcap/vcap_api_client.h
View File

@ -202,6 +202,8 @@ int vcap_rule_add_action_u32(struct vcap_rule *rule,
enum vcap_action_field action, u32 value);
/* VCAP rule counter operations */
int vcap_get_rule_count_by_cookie(struct vcap_control *vctrl,
struct vcap_counter *ctr, u64 cookie);
int vcap_rule_set_counter(struct vcap_rule *rule, struct vcap_counter *ctr);
int vcap_rule_get_counter(struct vcap_rule *rule, struct vcap_counter *ctr);