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mlxsw: spectrum: Add support for TC flower offload statistics 

Add support for TC flower offload statistics including number of packets,
bytes and last use timestamp. Currently the statistics are gathered on a
per-rule basis.

Signed-off-by: Arkadi Sharshvesky <arkadis@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arkadi Sharshevsky 2017-03-11 09:42:59 +01:00 committed by David S. Miller
parent 4817072950
commit 7c1b8eb175
4 changed files with 82 additions and 0 deletions
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3
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -1434,6 +1434,9 @@ static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
mlxsw_sp_flower_destroy(mlxsw_sp_port, ingress,
tc->cls_flower);
return 0;
case TC_CLSFLOWER_STATS:
return mlxsw_sp_flower_stats(mlxsw_sp_port, ingress,
tc->cls_flower);
default:
return -EOPNOTSUPP;
}

2
drivers/net/ethernet/mellanox/mlxsw/spectrum.h
View File

@ -688,6 +688,8 @@ int mlxsw_sp_flower_replace(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
__be16 protocol, struct tc_cls_flower_offload *f);
void mlxsw_sp_flower_destroy(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
struct tc_cls_flower_offload *f);
int mlxsw_sp_flower_stats(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
struct tc_cls_flower_offload *f);
int mlxsw_sp_flow_counter_get(struct mlxsw_sp *mlxsw_sp,
unsigned int counter_index, u64 *packets,
u64 *bytes);

28
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
View File

@ -92,6 +92,8 @@ struct mlxsw_sp_acl_rule {
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule_info *rulei;
u64 last_used;
u64 last_packets;
u64 last_bytes;
unsigned long priv[0];
/* priv has to be always the last item */
};
@ -559,6 +561,32 @@ static void mlxsw_sp_acl_rul_activity_update_work(struct work_struct *work)
mlxsw_sp_acl_rule_activity_work_schedule(acl);
}
int mlxsw_sp_acl_rule_get_stats(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule *rule,
u64 *packets, u64 *bytes, u64 *last_use)
{
struct mlxsw_sp_acl_rule_info *rulei;
u64 current_packets;
u64 current_bytes;
int err;
rulei = mlxsw_sp_acl_rule_rulei(rule);
err = mlxsw_sp_flow_counter_get(mlxsw_sp, rulei->counter_index,
&current_packets, &current_bytes);
if (err)
return err;
*packets = current_packets - rule->last_packets;
*bytes = current_bytes - rule->last_bytes;
*last_use = rule->last_used;
rule->last_bytes = current_bytes;
rule->last_packets = current_packets;
return 0;
}
#define MLXSW_SP_KDVL_ACT_EXT_SIZE 1
static int mlxsw_sp_act_kvdl_set_add(void *priv, u32 *p_kvdl_index,

49
drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
View File

@ -56,6 +56,11 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
if (tc_no_actions(exts))
return 0;
/* Count action is inserted first */
err = mlxsw_sp_acl_rulei_act_count(mlxsw_sp, rulei);
if (err)
return err;
tcf_exts_to_list(exts, &actions);
list_for_each_entry(a, &actions, list) {
if (is_tcf_gact_shot(a)) {
@ -346,3 +351,47 @@ void mlxsw_sp_flower_destroy(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
}
int mlxsw_sp_flower_stats(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
struct tc_cls_flower_offload *f)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
struct tc_action *a;
LIST_HEAD(actions);
u64 packets;
u64 lastuse;
u64 bytes;
int err;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, mlxsw_sp_port->dev,
ingress,
MLXSW_SP_ACL_PROFILE_FLOWER);
if (WARN_ON(IS_ERR(ruleset)))
return -EINVAL;
rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie);
if (!rule)
return -EINVAL;
err = mlxsw_sp_acl_rule_get_stats(mlxsw_sp, rule, &bytes, &packets,
&lastuse);
if (err)
goto err_rule_get_stats;
preempt_disable();
tcf_exts_to_list(f->exts, &actions);
list_for_each_entry(a, &actions, list)
tcf_action_stats_update(a, bytes, packets, lastuse);
preempt_enable();
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return 0;
err_rule_get_stats:
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return err;
}