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authorJiri Pirko <jiri@mellanox.com>2020-03-07 12:40:20 +0100
committerDavid S. Miller <davem@davemloft.net>2020-03-08 21:07:48 -0700
commit44f8658017419dccbeefe64f30122fa191d0e173 (patch)
tree91666da01c7c8ae1758342a2261165c5fab6fcf6 /net/sched/act_api.c
parentd7cb1e3ba12e004e92e9ad2e8d272220db0a541c (diff)
sched: act: allow user to specify type of HW stats for a filter
Currently, user who is adding an action expects HW to report stats, however it does not have exact expectations about the stats types. That is aligned with TCA_ACT_HW_STATS_TYPE_ANY. Allow user to specify the type of HW stats for an action and require it. Pass the information down to flow_offload layer. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_api.c')
-rw-r--r--net/sched/act_api.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 8c466a712cda..aa7b737fed2e 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -185,6 +185,7 @@ static size_t tcf_action_shared_attrs_size(const struct tc_action *act)
return nla_total_size(0) /* action number nested */
+ nla_total_size(IFNAMSIZ) /* TCA_ACT_KIND */
+ cookie_len /* TCA_ACT_COOKIE */
+ + nla_total_size(sizeof(struct nla_bitfield32)) /* TCA_ACT_HW_STATS_TYPE */
+ nla_total_size(0) /* TCA_ACT_STATS nested */
+ nla_total_size(sizeof(struct nla_bitfield32)) /* TCA_ACT_FLAGS */
/* TCA_STATS_BASIC */
@@ -788,6 +789,17 @@ tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
}
rcu_read_unlock();
+ if (a->hw_stats_type != TCA_ACT_HW_STATS_TYPE_ANY) {
+ struct nla_bitfield32 hw_stats_type = {
+ a->hw_stats_type,
+ TCA_ACT_HW_STATS_TYPE_ANY,
+ };
+
+ if (nla_put(skb, TCA_ACT_HW_STATS_TYPE, sizeof(hw_stats_type),
+ &hw_stats_type))
+ goto nla_put_failure;
+ }
+
if (a->tcfa_flags) {
struct nla_bitfield32 flags = { a->tcfa_flags,
a->tcfa_flags, };
@@ -854,7 +866,23 @@ static struct tc_cookie *nla_memdup_cookie(struct nlattr **tb)
return c;
}
+static u8 tcf_action_hw_stats_type_get(struct nlattr *hw_stats_type_attr)
+{
+ struct nla_bitfield32 hw_stats_type_bf;
+
+ /* If the user did not pass the attr, that means he does
+ * not care about the type. Return "any" in that case
+ * which is setting on all supported types.
+ */
+ if (!hw_stats_type_attr)
+ return TCA_ACT_HW_STATS_TYPE_ANY;
+ hw_stats_type_bf = nla_get_bitfield32(hw_stats_type_attr);
+ return hw_stats_type_bf.value;
+}
+
static const u32 tca_act_flags_allowed = TCA_ACT_FLAGS_NO_PERCPU_STATS;
+static const u32 tca_act_hw_stats_type_allowed = TCA_ACT_HW_STATS_TYPE_ANY;
+
static const struct nla_policy tcf_action_policy[TCA_ACT_MAX + 1] = {
[TCA_ACT_KIND] = { .type = NLA_STRING },
[TCA_ACT_INDEX] = { .type = NLA_U32 },
@@ -863,6 +891,8 @@ static const struct nla_policy tcf_action_policy[TCA_ACT_MAX + 1] = {
[TCA_ACT_OPTIONS] = { .type = NLA_NESTED },
[TCA_ACT_FLAGS] = { .type = NLA_BITFIELD32,
.validation_data = &tca_act_flags_allowed },
+ [TCA_ACT_HW_STATS_TYPE] = { .type = NLA_BITFIELD32,
+ .validation_data = &tca_act_hw_stats_type_allowed },
};
struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
@@ -871,6 +901,7 @@ struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
bool rtnl_held,
struct netlink_ext_ack *extack)
{
+ u8 hw_stats_type = TCA_ACT_HW_STATS_TYPE_ANY;
struct nla_bitfield32 flags = { 0, 0 };
struct tc_action *a;
struct tc_action_ops *a_o;
@@ -903,6 +934,8 @@ struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
goto err_out;
}
}
+ hw_stats_type =
+ tcf_action_hw_stats_type_get(tb[TCA_ACT_HW_STATS_TYPE]);
if (tb[TCA_ACT_FLAGS])
flags = nla_get_bitfield32(tb[TCA_ACT_FLAGS]);
} else {
@@ -953,6 +986,9 @@ struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
if (!name && tb[TCA_ACT_COOKIE])
tcf_set_action_cookie(&a->act_cookie, cookie);
+ if (!name)
+ a->hw_stats_type = hw_stats_type;
+
/* module count goes up only when brand new policy is created
* if it exists and is only bound to in a_o->init() then
* ACT_P_CREATED is not returned (a zero is).