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@@ -50,7 +50,6 @@ struct tc_police_compat
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/* Each policer is serialized by its individual spinlock */
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-#ifdef CONFIG_NET_CLS_ACT
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static int tcf_act_police_walker(struct sk_buff *skb, struct netlink_callback *cb,
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int type, struct tc_action *a)
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{
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@@ -96,9 +95,8 @@ rtattr_failure:
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nlmsg_trim(skb, r);
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goto done;
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}
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-#endif
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-void tcf_police_destroy(struct tcf_police *p)
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+static void tcf_police_destroy(struct tcf_police *p)
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{
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unsigned int h = tcf_hash(p->tcf_index, POL_TAB_MASK);
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struct tcf_common **p1p;
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@@ -121,7 +119,6 @@ void tcf_police_destroy(struct tcf_police *p)
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BUG_TRAP(0);
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}
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-#ifdef CONFIG_NET_CLS_ACT
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static int tcf_act_police_locate(struct rtattr *rta, struct rtattr *est,
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struct tc_action *a, int ovr, int bind)
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{
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@@ -247,10 +244,19 @@ failure:
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static int tcf_act_police_cleanup(struct tc_action *a, int bind)
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{
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struct tcf_police *p = a->priv;
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+ int ret = 0;
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- if (p != NULL)
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- return tcf_police_release(p, bind);
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- return 0;
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+ if (p != NULL) {
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+ if (bind)
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+ p->tcf_bindcnt--;
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+
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+ p->tcf_refcnt--;
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+ if (p->tcf_refcnt <= 0 && !p->tcf_bindcnt) {
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+ tcf_police_destroy(p);
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+ ret = 1;
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+ }
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+ }
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+ return ret;
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}
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static int tcf_act_police(struct sk_buff *skb, struct tc_action *a,
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@@ -372,229 +378,3 @@ police_cleanup_module(void)
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module_init(police_init_module);
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module_exit(police_cleanup_module);
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-
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-#else /* CONFIG_NET_CLS_ACT */
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-
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-static struct tcf_common *tcf_police_lookup(u32 index)
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-{
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- struct tcf_hashinfo *hinfo = &police_hash_info;
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- struct tcf_common *p;
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-
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- read_lock(hinfo->lock);
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- for (p = hinfo->htab[tcf_hash(index, hinfo->hmask)]; p;
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- p = p->tcfc_next) {
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- if (p->tcfc_index == index)
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- break;
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- }
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- read_unlock(hinfo->lock);
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-
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- return p;
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-}
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-
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-static u32 tcf_police_new_index(void)
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-{
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- u32 *idx_gen = &police_idx_gen;
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- u32 val = *idx_gen;
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-
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- do {
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- if (++val == 0)
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- val = 1;
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- } while (tcf_police_lookup(val));
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-
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- return (*idx_gen = val);
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-}
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-
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-struct tcf_police *tcf_police_locate(struct rtattr *rta, struct rtattr *est)
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-{
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- unsigned int h;
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- struct tcf_police *police;
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- struct rtattr *tb[TCA_POLICE_MAX];
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- struct tc_police *parm;
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- int size;
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-
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- if (rtattr_parse_nested(tb, TCA_POLICE_MAX, rta) < 0)
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- return NULL;
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-
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- if (tb[TCA_POLICE_TBF-1] == NULL)
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- return NULL;
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- size = RTA_PAYLOAD(tb[TCA_POLICE_TBF-1]);
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- if (size != sizeof(*parm) && size != sizeof(struct tc_police_compat))
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- return NULL;
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-
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- parm = RTA_DATA(tb[TCA_POLICE_TBF-1]);
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-
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- if (parm->index) {
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- struct tcf_common *pc;
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-
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- pc = tcf_police_lookup(parm->index);
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- if (pc) {
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- police = to_police(pc);
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- police->tcf_refcnt++;
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- return police;
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- }
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- }
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- police = kzalloc(sizeof(*police), GFP_KERNEL);
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- if (unlikely(!police))
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- return NULL;
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-
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- police->tcf_refcnt = 1;
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- spin_lock_init(&police->tcf_lock);
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- if (parm->rate.rate) {
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- police->tcfp_R_tab =
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- qdisc_get_rtab(&parm->rate, tb[TCA_POLICE_RATE-1]);
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- if (police->tcfp_R_tab == NULL)
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- goto failure;
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- if (parm->peakrate.rate) {
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- police->tcfp_P_tab =
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- qdisc_get_rtab(&parm->peakrate,
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- tb[TCA_POLICE_PEAKRATE-1]);
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- if (police->tcfp_P_tab == NULL)
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- goto failure;
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- }
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- }
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- if (tb[TCA_POLICE_RESULT-1]) {
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- if (RTA_PAYLOAD(tb[TCA_POLICE_RESULT-1]) != sizeof(u32))
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- goto failure;
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- police->tcfp_result = *(u32*)RTA_DATA(tb[TCA_POLICE_RESULT-1]);
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- }
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- if (tb[TCA_POLICE_AVRATE-1]) {
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- if (RTA_PAYLOAD(tb[TCA_POLICE_AVRATE-1]) != sizeof(u32))
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- goto failure;
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- police->tcfp_ewma_rate =
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- *(u32*)RTA_DATA(tb[TCA_POLICE_AVRATE-1]);
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- }
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- police->tcfp_toks = police->tcfp_burst = parm->burst;
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- police->tcfp_mtu = parm->mtu;
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- if (police->tcfp_mtu == 0) {
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- police->tcfp_mtu = ~0;
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- if (police->tcfp_R_tab)
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- police->tcfp_mtu = 255<<police->tcfp_R_tab->rate.cell_log;
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- }
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- if (police->tcfp_P_tab)
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- police->tcfp_ptoks = L2T_P(police, police->tcfp_mtu);
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- police->tcfp_t_c = psched_get_time();
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- police->tcf_index = parm->index ? parm->index :
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- tcf_police_new_index();
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- police->tcf_action = parm->action;
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- if (est)
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- gen_new_estimator(&police->tcf_bstats, &police->tcf_rate_est,
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- &police->tcf_lock, est);
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- h = tcf_hash(police->tcf_index, POL_TAB_MASK);
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- write_lock_bh(&police_lock);
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- police->tcf_next = tcf_police_ht[h];
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- tcf_police_ht[h] = &police->common;
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- write_unlock_bh(&police_lock);
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- return police;
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-
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-failure:
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- if (police->tcfp_R_tab)
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- qdisc_put_rtab(police->tcfp_R_tab);
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- kfree(police);
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- return NULL;
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-}
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-
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-int tcf_police(struct sk_buff *skb, struct tcf_police *police)
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-{
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- psched_time_t now;
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- long toks;
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- long ptoks = 0;
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-
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- spin_lock(&police->tcf_lock);
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-
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- police->tcf_bstats.bytes += skb->len;
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- police->tcf_bstats.packets++;
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-
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- if (police->tcfp_ewma_rate &&
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- police->tcf_rate_est.bps >= police->tcfp_ewma_rate) {
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- police->tcf_qstats.overlimits++;
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- spin_unlock(&police->tcf_lock);
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- return police->tcf_action;
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- }
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- if (skb->len <= police->tcfp_mtu) {
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- if (police->tcfp_R_tab == NULL) {
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- spin_unlock(&police->tcf_lock);
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- return police->tcfp_result;
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- }
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-
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- now = psched_get_time();
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- toks = psched_tdiff_bounded(now, police->tcfp_t_c,
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- police->tcfp_burst);
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- if (police->tcfp_P_tab) {
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- ptoks = toks + police->tcfp_ptoks;
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- if (ptoks > (long)L2T_P(police, police->tcfp_mtu))
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- ptoks = (long)L2T_P(police, police->tcfp_mtu);
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- ptoks -= L2T_P(police, skb->len);
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- }
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- toks += police->tcfp_toks;
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- if (toks > (long)police->tcfp_burst)
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- toks = police->tcfp_burst;
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- toks -= L2T(police, skb->len);
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- if ((toks|ptoks) >= 0) {
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- police->tcfp_t_c = now;
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- police->tcfp_toks = toks;
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- police->tcfp_ptoks = ptoks;
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- spin_unlock(&police->tcf_lock);
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- return police->tcfp_result;
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- }
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- }
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-
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- police->tcf_qstats.overlimits++;
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- spin_unlock(&police->tcf_lock);
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- return police->tcf_action;
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-}
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-EXPORT_SYMBOL(tcf_police);
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-
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-int tcf_police_dump(struct sk_buff *skb, struct tcf_police *police)
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-{
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- unsigned char *b = skb_tail_pointer(skb);
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- struct tc_police opt;
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-
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- opt.index = police->tcf_index;
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- opt.action = police->tcf_action;
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- opt.mtu = police->tcfp_mtu;
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- opt.burst = police->tcfp_burst;
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- if (police->tcfp_R_tab)
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- opt.rate = police->tcfp_R_tab->rate;
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- else
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- memset(&opt.rate, 0, sizeof(opt.rate));
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- if (police->tcfp_P_tab)
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- opt.peakrate = police->tcfp_P_tab->rate;
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- else
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- memset(&opt.peakrate, 0, sizeof(opt.peakrate));
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- RTA_PUT(skb, TCA_POLICE_TBF, sizeof(opt), &opt);
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- if (police->tcfp_result)
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- RTA_PUT(skb, TCA_POLICE_RESULT, sizeof(int),
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- &police->tcfp_result);
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- if (police->tcfp_ewma_rate)
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- RTA_PUT(skb, TCA_POLICE_AVRATE, 4, &police->tcfp_ewma_rate);
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- return skb->len;
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-
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-rtattr_failure:
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- nlmsg_trim(skb, b);
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- return -1;
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-}
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-
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-int tcf_police_dump_stats(struct sk_buff *skb, struct tcf_police *police)
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-{
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- struct gnet_dump d;
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-
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- if (gnet_stats_start_copy_compat(skb, TCA_STATS2, TCA_STATS,
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- TCA_XSTATS, &police->tcf_lock,
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- &d) < 0)
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- goto errout;
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-
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- if (gnet_stats_copy_basic(&d, &police->tcf_bstats) < 0 ||
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- gnet_stats_copy_rate_est(&d, &police->tcf_rate_est) < 0 ||
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- gnet_stats_copy_queue(&d, &police->tcf_qstats) < 0)
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- goto errout;
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-
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- if (gnet_stats_finish_copy(&d) < 0)
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- goto errout;
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-
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- return 0;
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-
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-errout:
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- return -1;
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-}
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-
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-#endif /* CONFIG_NET_CLS_ACT */
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Patrick McHardy