diff options
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/act_police.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/net/sched/act_police.c b/net/sched/act_police.c index 052855d47354..37c9b8f0e10f 100644 --- a/net/sched/act_police.c +++ b/net/sched/act_police.c @@ -27,10 +27,7 @@ struct tcf_police_params { u32 tcfp_ewma_rate; s64 tcfp_burst; u32 tcfp_mtu; - s64 tcfp_toks; - s64 tcfp_ptoks; s64 tcfp_mtu_ptoks; - s64 tcfp_t_c; struct psched_ratecfg rate; bool rate_present; struct psched_ratecfg peak; @@ -41,6 +38,11 @@ struct tcf_police_params { struct tcf_police { struct tc_action common; struct tcf_police_params __rcu *params; + + spinlock_t tcfp_lock ____cacheline_aligned_in_smp; + s64 tcfp_toks; + s64 tcfp_ptoks; + s64 tcfp_t_c; }; #define to_police(pc) ((struct tcf_police *)pc) @@ -122,6 +124,7 @@ static int tcf_police_init(struct net *net, struct nlattr *nla, return ret; } ret = ACT_P_CREATED; + spin_lock_init(&(to_police(*a)->tcfp_lock)); } else if (!ovr) { tcf_idr_release(*a, bind); return -EEXIST; @@ -186,12 +189,9 @@ static int tcf_police_init(struct net *net, struct nlattr *nla, } new->tcfp_burst = PSCHED_TICKS2NS(parm->burst); - new->tcfp_toks = new->tcfp_burst; - if (new->peak_present) { + if (new->peak_present) new->tcfp_mtu_ptoks = (s64)psched_l2t_ns(&new->peak, new->tcfp_mtu); - new->tcfp_ptoks = new->tcfp_mtu_ptoks; - } if (tb[TCA_POLICE_AVRATE]) new->tcfp_ewma_rate = nla_get_u32(tb[TCA_POLICE_AVRATE]); @@ -207,7 +207,12 @@ static int tcf_police_init(struct net *net, struct nlattr *nla, } spin_lock_bh(&police->tcf_lock); - new->tcfp_t_c = ktime_get_ns(); + spin_lock_bh(&police->tcfp_lock); + police->tcfp_t_c = ktime_get_ns(); + police->tcfp_toks = new->tcfp_burst; + if (new->peak_present) + police->tcfp_ptoks = new->tcfp_mtu_ptoks; + spin_unlock_bh(&police->tcfp_lock); police->tcf_action = parm->action; rcu_swap_protected(police->params, new, @@ -257,25 +262,28 @@ static int tcf_police_act(struct sk_buff *skb, const struct tc_action *a, } now = ktime_get_ns(); - toks = min_t(s64, now - p->tcfp_t_c, p->tcfp_burst); + spin_lock_bh(&police->tcfp_lock); + toks = min_t(s64, now - police->tcfp_t_c, p->tcfp_burst); if (p->peak_present) { - ptoks = toks + p->tcfp_ptoks; + ptoks = toks + police->tcfp_ptoks; if (ptoks > p->tcfp_mtu_ptoks) ptoks = p->tcfp_mtu_ptoks; ptoks -= (s64)psched_l2t_ns(&p->peak, qdisc_pkt_len(skb)); } - toks += p->tcfp_toks; + toks += police->tcfp_toks; if (toks > p->tcfp_burst) toks = p->tcfp_burst; toks -= (s64)psched_l2t_ns(&p->rate, qdisc_pkt_len(skb)); if ((toks|ptoks) >= 0) { - p->tcfp_t_c = now; - p->tcfp_toks = toks; - p->tcfp_ptoks = ptoks; + police->tcfp_t_c = now; + police->tcfp_toks = toks; + police->tcfp_ptoks = ptoks; + spin_unlock_bh(&police->tcfp_lock); ret = p->tcfp_result; goto inc_drops; } + spin_unlock_bh(&police->tcfp_lock); } inc_overlimits: |