diff options
| -rw-r--r-- | include/net/act_api.h | 4 | ||||
| -rw-r--r-- | include/uapi/linux/pkt_cls.h | 22 | ||||
| -rw-r--r-- | net/sched/act_api.c | 36 | ||||
| -rw-r--r-- | net/sched/cls_api.c | 7 |
4 files changed, 69 insertions, 0 deletions
diff --git a/include/net/act_api.h b/include/net/act_api.h index 71347a90a9d1..41337c7fc728 100644 --- a/include/net/act_api.h +++ b/include/net/act_api.h @@ -41,6 +41,7 @@ struct tc_action { struct tc_cookie __rcu *act_cookie; struct tcf_chain __rcu *goto_chain; u32 tcfa_flags; + u8 hw_stats_type; }; #define tcf_index common.tcfa_index #define tcf_refcnt common.tcfa_refcnt @@ -52,6 +53,9 @@ struct tc_action { #define tcf_rate_est common.tcfa_rate_est #define tcf_lock common.tcfa_lock +#define TCA_ACT_HW_STATS_TYPE_ANY (TCA_ACT_HW_STATS_TYPE_IMMEDIATE | \ + TCA_ACT_HW_STATS_TYPE_DELAYED) + /* Update lastuse only if needed, to avoid dirtying a cache line. * We use a temp variable to avoid fetching jiffies twice. */ diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h index 449a63971451..81cc1a869588 100644 --- a/include/uapi/linux/pkt_cls.h +++ b/include/uapi/linux/pkt_cls.h @@ -17,6 +17,7 @@ enum { TCA_ACT_PAD, TCA_ACT_COOKIE, TCA_ACT_FLAGS, + TCA_ACT_HW_STATS_TYPE, __TCA_ACT_MAX }; @@ -24,6 +25,27 @@ enum { * actions stats. */ +/* tca HW stats type + * When user does not pass the attribute, he does not care. + * It is the same as if he would pass the attribute with + * all supported bits set. + * In case no bits are set, user is not interested in getting any HW statistics. + */ +#define TCA_ACT_HW_STATS_TYPE_IMMEDIATE (1 << 0) /* Means that in dump, user + * gets the current HW stats + * state from the device + * queried at the dump time. + */ +#define TCA_ACT_HW_STATS_TYPE_DELAYED (1 << 1) /* Means that in dump, user gets + * HW stats that might be out + * of date for some time, maybe + * couple of seconds. This is + * the case when driver polls + * stats updates periodically + * or when it gets async stats update + * from the device. + */ + #define TCA_ACT_MAX __TCA_ACT_MAX #define TCA_OLD_COMPAT (TCA_ACT_MAX+1) #define TCA_ACT_MAX_PRIO 32 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). diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 4e766c5ab77a..e91448640a4f 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -3464,6 +3464,10 @@ int tc_setup_flow_action(struct flow_action *flow_action, struct tc_action *act; int i, j, k, err = 0; + BUILD_BUG_ON(TCA_ACT_HW_STATS_TYPE_ANY != FLOW_ACTION_HW_STATS_TYPE_ANY); + BUILD_BUG_ON(TCA_ACT_HW_STATS_TYPE_IMMEDIATE != FLOW_ACTION_HW_STATS_TYPE_IMMEDIATE); + BUILD_BUG_ON(TCA_ACT_HW_STATS_TYPE_DELAYED != FLOW_ACTION_HW_STATS_TYPE_DELAYED); + if (!exts) return 0; @@ -3476,6 +3480,9 @@ int tc_setup_flow_action(struct flow_action *flow_action, err = tcf_act_get_cookie(entry, act); if (err) goto err_out_locked; + + entry->hw_stats_type = act->hw_stats_type; + if (is_tcf_gact_ok(act)) { entry->id = FLOW_ACTION_ACCEPT; } else if (is_tcf_gact_shot(act)) { |