[Feature][T106]ZXW P56U09 code
Only Configure: Yes
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: No
Doc Update: No
Change-Id: I3cbd8b420271eb20c2b40ebe5c78f83059cd42f3
diff --git a/ap/os/linux/linux-3.4.x/net/sched/cls_u32.c b/ap/os/linux/linux-3.4.x/net/sched/cls_u32.c
new file mode 100644
index 0000000..939b627
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/sched/cls_u32.c
@@ -0,0 +1,817 @@
+/*
+ * net/sched/cls_u32.c Ugly (or Universal) 32bit key Packet Classifier.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ * The filters are packed to hash tables of key nodes
+ * with a set of 32bit key/mask pairs at every node.
+ * Nodes reference next level hash tables etc.
+ *
+ * This scheme is the best universal classifier I managed to
+ * invent; it is not super-fast, but it is not slow (provided you
+ * program it correctly), and general enough. And its relative
+ * speed grows as the number of rules becomes larger.
+ *
+ * It seems that it represents the best middle point between
+ * speed and manageability both by human and by machine.
+ *
+ * It is especially useful for link sharing combined with QoS;
+ * pure RSVP doesn't need such a general approach and can use
+ * much simpler (and faster) schemes, sort of cls_rsvp.c.
+ *
+ * JHS: We should remove the CONFIG_NET_CLS_IND from here
+ * eventually when the meta match extension is made available
+ *
+ * nfmark match added by Catalin(ux aka Dino) BOIE <catab at umbrella.ro>
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/rtnetlink.h>
+#include <linux/skbuff.h>
+#include <net/netlink.h>
+#include <net/act_api.h>
+#include <net/pkt_cls.h>
+
+struct tc_u_knode {
+ struct tc_u_knode *next;
+ u32 handle;
+ struct tc_u_hnode *ht_up;
+ struct tcf_exts exts;
+#ifdef CONFIG_NET_CLS_IND
+ char indev[IFNAMSIZ];
+#endif
+ u8 fshift;
+ struct tcf_result res;
+ struct tc_u_hnode *ht_down;
+#ifdef CONFIG_CLS_U32_PERF
+ struct tc_u32_pcnt *pf;
+#endif
+#ifdef CONFIG_CLS_U32_MARK
+ struct tc_u32_mark mark;
+#endif
+ struct tc_u32_sel sel;
+};
+
+struct tc_u_hnode {
+ struct tc_u_hnode *next;
+ u32 handle;
+ u32 prio;
+ struct tc_u_common *tp_c;
+ int refcnt;
+ unsigned int divisor;
+ struct tc_u_knode *ht[1];
+};
+
+struct tc_u_common {
+ struct tc_u_hnode *hlist;
+ struct Qdisc *q;
+ int refcnt;
+ u32 hgenerator;
+};
+
+static const struct tcf_ext_map u32_ext_map = {
+ .action = TCA_U32_ACT,
+ .police = TCA_U32_POLICE
+};
+
+static inline unsigned int u32_hash_fold(__be32 key,
+ const struct tc_u32_sel *sel,
+ u8 fshift)
+{
+ unsigned int h = ntohl(key & sel->hmask) >> fshift;
+
+ return h;
+}
+
+static int u32_classify(struct sk_buff *skb, const struct tcf_proto *tp, struct tcf_result *res)
+{
+ struct {
+ struct tc_u_knode *knode;
+ unsigned int off;
+ } stack[TC_U32_MAXDEPTH];
+
+ struct tc_u_hnode *ht = (struct tc_u_hnode *)tp->root;
+ unsigned int off = skb_network_offset(skb);
+ struct tc_u_knode *n;
+ int sdepth = 0;
+ int off2 = 0;
+ int sel = 0;
+#ifdef CONFIG_CLS_U32_PERF
+ int j;
+#endif
+ int i, r;
+
+next_ht:
+ n = ht->ht[sel];
+
+next_knode:
+ if (n) {
+ struct tc_u32_key *key = n->sel.keys;
+
+#ifdef CONFIG_CLS_U32_PERF
+ n->pf->rcnt += 1;
+ j = 0;
+#endif
+
+#ifdef CONFIG_CLS_U32_MARK
+ if ((skb->mark & n->mark.mask) != n->mark.val) {
+ n = n->next;
+ goto next_knode;
+ } else {
+ n->mark.success++;
+ }
+#endif
+
+ for (i = n->sel.nkeys; i > 0; i--, key++) {
+ int toff = off + key->off + (off2 & key->offmask);
+ __be32 *data, hdata;
+
+ if (skb_headroom(skb) + toff > INT_MAX)
+ goto out;
+
+ data = skb_header_pointer(skb, toff, 4, &hdata);
+ if (!data)
+ goto out;
+ if ((*data ^ key->val) & key->mask) {
+ n = n->next;
+ goto next_knode;
+ }
+#ifdef CONFIG_CLS_U32_PERF
+ n->pf->kcnts[j] += 1;
+ j++;
+#endif
+ }
+ if (n->ht_down == NULL) {
+check_terminal:
+ if (n->sel.flags & TC_U32_TERMINAL) {
+
+ *res = n->res;
+#ifdef CONFIG_NET_CLS_IND
+ if (!tcf_match_indev(skb, n->indev)) {
+ n = n->next;
+ goto next_knode;
+ }
+#endif
+#ifdef CONFIG_CLS_U32_PERF
+ n->pf->rhit += 1;
+#endif
+ r = tcf_exts_exec(skb, &n->exts, res);
+ if (r < 0) {
+ n = n->next;
+ goto next_knode;
+ }
+
+ return r;
+ }
+ n = n->next;
+ goto next_knode;
+ }
+
+ /* PUSH */
+ if (sdepth >= TC_U32_MAXDEPTH)
+ goto deadloop;
+ stack[sdepth].knode = n;
+ stack[sdepth].off = off;
+ sdepth++;
+
+ ht = n->ht_down;
+ sel = 0;
+ if (ht->divisor) {
+ __be32 *data, hdata;
+
+ data = skb_header_pointer(skb, off + n->sel.hoff, 4,
+ &hdata);
+ if (!data)
+ goto out;
+ sel = ht->divisor & u32_hash_fold(*data, &n->sel,
+ n->fshift);
+ }
+ if (!(n->sel.flags & (TC_U32_VAROFFSET | TC_U32_OFFSET | TC_U32_EAT)))
+ goto next_ht;
+
+ if (n->sel.flags & (TC_U32_OFFSET | TC_U32_VAROFFSET)) {
+ off2 = n->sel.off + 3;
+ if (n->sel.flags & TC_U32_VAROFFSET) {
+ __be16 *data, hdata;
+
+ data = skb_header_pointer(skb,
+ off + n->sel.offoff,
+ 2, &hdata);
+ if (!data)
+ goto out;
+ off2 += ntohs(n->sel.offmask & *data) >>
+ n->sel.offshift;
+ }
+ off2 &= ~3;
+ }
+ if (n->sel.flags & TC_U32_EAT) {
+ off += off2;
+ off2 = 0;
+ }
+
+ if (off < skb->len)
+ goto next_ht;
+ }
+
+ /* POP */
+ if (sdepth--) {
+ n = stack[sdepth].knode;
+ ht = n->ht_up;
+ off = stack[sdepth].off;
+ goto check_terminal;
+ }
+out:
+ return -1;
+
+deadloop:
+ if (net_ratelimit())
+ pr_warning("cls_u32: dead loop\n");
+ return -1;
+}
+
+static struct tc_u_hnode *
+u32_lookup_ht(struct tc_u_common *tp_c, u32 handle)
+{
+ struct tc_u_hnode *ht;
+
+ for (ht = tp_c->hlist; ht; ht = ht->next)
+ if (ht->handle == handle)
+ break;
+
+ return ht;
+}
+
+static struct tc_u_knode *
+u32_lookup_key(struct tc_u_hnode *ht, u32 handle)
+{
+ unsigned int sel;
+ struct tc_u_knode *n = NULL;
+
+ sel = TC_U32_HASH(handle);
+ if (sel > ht->divisor)
+ goto out;
+
+ for (n = ht->ht[sel]; n; n = n->next)
+ if (n->handle == handle)
+ break;
+out:
+ return n;
+}
+
+
+static unsigned long u32_get(struct tcf_proto *tp, u32 handle)
+{
+ struct tc_u_hnode *ht;
+ struct tc_u_common *tp_c = tp->data;
+
+ if (TC_U32_HTID(handle) == TC_U32_ROOT)
+ ht = tp->root;
+ else
+ ht = u32_lookup_ht(tp_c, TC_U32_HTID(handle));
+
+ if (!ht)
+ return 0;
+
+ if (TC_U32_KEY(handle) == 0)
+ return (unsigned long)ht;
+
+ return (unsigned long)u32_lookup_key(ht, handle);
+}
+
+static void u32_put(struct tcf_proto *tp, unsigned long f)
+{
+}
+
+static u32 gen_new_htid(struct tc_u_common *tp_c)
+{
+ int i = 0x800;
+
+ do {
+ if (++tp_c->hgenerator == 0x7FF)
+ tp_c->hgenerator = 1;
+ } while (--i > 0 && u32_lookup_ht(tp_c, (tp_c->hgenerator|0x800)<<20));
+
+ return i > 0 ? (tp_c->hgenerator|0x800)<<20 : 0;
+}
+
+static int u32_init(struct tcf_proto *tp)
+{
+ struct tc_u_hnode *root_ht;
+ struct tc_u_common *tp_c;
+
+ tp_c = tp->q->u32_node;
+
+ root_ht = kzalloc(sizeof(*root_ht), GFP_KERNEL);
+ if (root_ht == NULL)
+ return -ENOBUFS;
+
+ root_ht->divisor = 0;
+ root_ht->refcnt++;
+ root_ht->handle = tp_c ? gen_new_htid(tp_c) : 0x80000000;
+ root_ht->prio = tp->prio;
+
+ if (tp_c == NULL) {
+ tp_c = kzalloc(sizeof(*tp_c), GFP_KERNEL);
+ if (tp_c == NULL) {
+ kfree(root_ht);
+ return -ENOBUFS;
+ }
+ tp_c->q = tp->q;
+ tp->q->u32_node = tp_c;
+ }
+
+ tp_c->refcnt++;
+ root_ht->next = tp_c->hlist;
+ tp_c->hlist = root_ht;
+ root_ht->tp_c = tp_c;
+
+ tp->root = root_ht;
+ tp->data = tp_c;
+ return 0;
+}
+
+static int u32_destroy_key(struct tcf_proto *tp, struct tc_u_knode *n)
+{
+ tcf_unbind_filter(tp, &n->res);
+ tcf_exts_destroy(tp, &n->exts);
+ if (n->ht_down)
+ n->ht_down->refcnt--;
+#ifdef CONFIG_CLS_U32_PERF
+ kfree(n->pf);
+#endif
+ kfree(n);
+ return 0;
+}
+
+static int u32_delete_key(struct tcf_proto *tp, struct tc_u_knode* key)
+{
+ struct tc_u_knode **kp;
+ struct tc_u_hnode *ht = key->ht_up;
+
+ if (ht) {
+ for (kp = &ht->ht[TC_U32_HASH(key->handle)]; *kp; kp = &(*kp)->next) {
+ if (*kp == key) {
+ tcf_tree_lock(tp);
+ *kp = key->next;
+ tcf_tree_unlock(tp);
+
+ u32_destroy_key(tp, key);
+ return 0;
+ }
+ }
+ }
+ WARN_ON(1);
+ return 0;
+}
+
+static void u32_clear_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
+{
+ struct tc_u_knode *n;
+ unsigned int h;
+
+ for (h = 0; h <= ht->divisor; h++) {
+ while ((n = ht->ht[h]) != NULL) {
+ ht->ht[h] = n->next;
+
+ u32_destroy_key(tp, n);
+ }
+ }
+}
+
+static int u32_destroy_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
+{
+ struct tc_u_common *tp_c = tp->data;
+ struct tc_u_hnode **hn;
+
+ WARN_ON(ht->refcnt);
+
+ u32_clear_hnode(tp, ht);
+
+ for (hn = &tp_c->hlist; *hn; hn = &(*hn)->next) {
+ if (*hn == ht) {
+ *hn = ht->next;
+ kfree(ht);
+ return 0;
+ }
+ }
+
+ WARN_ON(1);
+ return -ENOENT;
+}
+
+static void u32_destroy(struct tcf_proto *tp)
+{
+ struct tc_u_common *tp_c = tp->data;
+ struct tc_u_hnode *root_ht = tp->root;
+
+ WARN_ON(root_ht == NULL);
+
+ if (root_ht && --root_ht->refcnt == 0)
+ u32_destroy_hnode(tp, root_ht);
+
+ if (--tp_c->refcnt == 0) {
+ struct tc_u_hnode *ht;
+
+ tp->q->u32_node = NULL;
+
+ for (ht = tp_c->hlist; ht; ht = ht->next) {
+ ht->refcnt--;
+ u32_clear_hnode(tp, ht);
+ }
+
+ while ((ht = tp_c->hlist) != NULL) {
+ tp_c->hlist = ht->next;
+
+ WARN_ON(ht->refcnt != 0);
+
+ kfree(ht);
+ }
+
+ kfree(tp_c);
+ }
+
+ tp->data = NULL;
+}
+
+static int u32_delete(struct tcf_proto *tp, unsigned long arg)
+{
+ struct tc_u_hnode *ht = (struct tc_u_hnode *)arg;
+
+ if (ht == NULL)
+ return 0;
+
+ if (TC_U32_KEY(ht->handle))
+ return u32_delete_key(tp, (struct tc_u_knode *)ht);
+
+ if (tp->root == ht)
+ return -EINVAL;
+
+ if (ht->refcnt == 1) {
+ ht->refcnt--;
+ u32_destroy_hnode(tp, ht);
+ } else {
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static u32 gen_new_kid(struct tc_u_hnode *ht, u32 handle)
+{
+ struct tc_u_knode *n;
+ unsigned int i = 0x7FF;
+
+ for (n = ht->ht[TC_U32_HASH(handle)]; n; n = n->next)
+ if (i < TC_U32_NODE(n->handle))
+ i = TC_U32_NODE(n->handle);
+ i++;
+
+ return handle | (i > 0xFFF ? 0xFFF : i);
+}
+
+static const struct nla_policy u32_policy[TCA_U32_MAX + 1] = {
+ [TCA_U32_CLASSID] = { .type = NLA_U32 },
+ [TCA_U32_HASH] = { .type = NLA_U32 },
+ [TCA_U32_LINK] = { .type = NLA_U32 },
+ [TCA_U32_DIVISOR] = { .type = NLA_U32 },
+ [TCA_U32_SEL] = { .len = sizeof(struct tc_u32_sel) },
+ [TCA_U32_INDEV] = { .type = NLA_STRING, .len = IFNAMSIZ },
+ [TCA_U32_MARK] = { .len = sizeof(struct tc_u32_mark) },
+};
+
+static int u32_set_parms(struct tcf_proto *tp, unsigned long base,
+ struct tc_u_hnode *ht,
+ struct tc_u_knode *n, struct nlattr **tb,
+ struct nlattr *est)
+{
+ int err;
+ struct tcf_exts e;
+
+ err = tcf_exts_validate(tp, tb, est, &e, &u32_ext_map);
+ if (err < 0)
+ return err;
+
+ err = -EINVAL;
+ if (tb[TCA_U32_LINK]) {
+ u32 handle = nla_get_u32(tb[TCA_U32_LINK]);
+ struct tc_u_hnode *ht_down = NULL, *ht_old;
+
+ if (TC_U32_KEY(handle))
+ goto errout;
+
+ if (handle) {
+ ht_down = u32_lookup_ht(ht->tp_c, handle);
+
+ if (ht_down == NULL)
+ goto errout;
+ ht_down->refcnt++;
+ }
+
+ tcf_tree_lock(tp);
+ ht_old = n->ht_down;
+ n->ht_down = ht_down;
+ tcf_tree_unlock(tp);
+
+ if (ht_old)
+ ht_old->refcnt--;
+ }
+ if (tb[TCA_U32_CLASSID]) {
+ n->res.classid = nla_get_u32(tb[TCA_U32_CLASSID]);
+ tcf_bind_filter(tp, &n->res, base);
+ }
+
+#ifdef CONFIG_NET_CLS_IND
+ if (tb[TCA_U32_INDEV]) {
+ err = tcf_change_indev(tp, n->indev, tb[TCA_U32_INDEV]);
+ if (err < 0)
+ goto errout;
+ }
+#endif
+ tcf_exts_change(tp, &n->exts, &e);
+
+ return 0;
+errout:
+ tcf_exts_destroy(tp, &e);
+ return err;
+}
+
+static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+ struct nlattr **tca,
+ unsigned long *arg)
+{
+ struct tc_u_common *tp_c = tp->data;
+ struct tc_u_hnode *ht;
+ struct tc_u_knode *n;
+ struct tc_u32_sel *s;
+ struct nlattr *opt = tca[TCA_OPTIONS];
+ struct nlattr *tb[TCA_U32_MAX + 1];
+ u32 htid;
+ int err;
+
+ if (opt == NULL)
+ return handle ? -EINVAL : 0;
+
+ err = nla_parse_nested(tb, TCA_U32_MAX, opt, u32_policy);
+ if (err < 0)
+ return err;
+
+ n = (struct tc_u_knode *)*arg;
+ if (n) {
+ if (TC_U32_KEY(n->handle) == 0)
+ return -EINVAL;
+
+ return u32_set_parms(tp, base, n->ht_up, n, tb, tca[TCA_RATE]);
+ }
+
+ if (tb[TCA_U32_DIVISOR]) {
+ unsigned int divisor = nla_get_u32(tb[TCA_U32_DIVISOR]);
+
+ if (--divisor > 0x100)
+ return -EINVAL;
+ if (TC_U32_KEY(handle))
+ return -EINVAL;
+ if (handle == 0) {
+ handle = gen_new_htid(tp->data);
+ if (handle == 0)
+ return -ENOMEM;
+ }
+ ht = kzalloc(sizeof(*ht) + divisor*sizeof(void *), GFP_KERNEL);
+ if (ht == NULL)
+ return -ENOBUFS;
+ ht->tp_c = tp_c;
+ ht->refcnt = 1;
+ ht->divisor = divisor;
+ ht->handle = handle;
+ ht->prio = tp->prio;
+ ht->next = tp_c->hlist;
+ tp_c->hlist = ht;
+ *arg = (unsigned long)ht;
+ return 0;
+ }
+
+ if (tb[TCA_U32_HASH]) {
+ htid = nla_get_u32(tb[TCA_U32_HASH]);
+ if (TC_U32_HTID(htid) == TC_U32_ROOT) {
+ ht = tp->root;
+ htid = ht->handle;
+ } else {
+ ht = u32_lookup_ht(tp->data, TC_U32_HTID(htid));
+ if (ht == NULL)
+ return -EINVAL;
+ }
+ } else {
+ ht = tp->root;
+ htid = ht->handle;
+ }
+
+ if (ht->divisor < TC_U32_HASH(htid))
+ return -EINVAL;
+
+ if (handle) {
+ if (TC_U32_HTID(handle) && TC_U32_HTID(handle^htid))
+ return -EINVAL;
+ handle = htid | TC_U32_NODE(handle);
+ } else
+ handle = gen_new_kid(ht, htid);
+
+ if (tb[TCA_U32_SEL] == NULL)
+ return -EINVAL;
+
+ s = nla_data(tb[TCA_U32_SEL]);
+
+ n = kzalloc(sizeof(*n) + s->nkeys*sizeof(struct tc_u32_key), GFP_KERNEL);
+ if (n == NULL)
+ return -ENOBUFS;
+
+#ifdef CONFIG_CLS_U32_PERF
+ n->pf = kzalloc(sizeof(struct tc_u32_pcnt) + s->nkeys*sizeof(u64), GFP_KERNEL);
+ if (n->pf == NULL) {
+ kfree(n);
+ return -ENOBUFS;
+ }
+#endif
+
+ memcpy(&n->sel, s, sizeof(*s) + s->nkeys*sizeof(struct tc_u32_key));
+ n->ht_up = ht;
+ n->handle = handle;
+ n->fshift = s->hmask ? ffs(ntohl(s->hmask)) - 1 : 0;
+
+#ifdef CONFIG_CLS_U32_MARK
+ if (tb[TCA_U32_MARK]) {
+ struct tc_u32_mark *mark;
+
+ mark = nla_data(tb[TCA_U32_MARK]);
+ memcpy(&n->mark, mark, sizeof(struct tc_u32_mark));
+ n->mark.success = 0;
+ }
+#endif
+
+ err = u32_set_parms(tp, base, ht, n, tb, tca[TCA_RATE]);
+ if (err == 0) {
+ struct tc_u_knode **ins;
+ for (ins = &ht->ht[TC_U32_HASH(handle)]; *ins; ins = &(*ins)->next)
+ if (TC_U32_NODE(handle) < TC_U32_NODE((*ins)->handle))
+ break;
+
+ n->next = *ins;
+ tcf_tree_lock(tp);
+ *ins = n;
+ tcf_tree_unlock(tp);
+
+ *arg = (unsigned long)n;
+ return 0;
+ }
+#ifdef CONFIG_CLS_U32_PERF
+ kfree(n->pf);
+#endif
+ kfree(n);
+ return err;
+}
+
+static void u32_walk(struct tcf_proto *tp, struct tcf_walker *arg)
+{
+ struct tc_u_common *tp_c = tp->data;
+ struct tc_u_hnode *ht;
+ struct tc_u_knode *n;
+ unsigned int h;
+
+ if (arg->stop)
+ return;
+
+ for (ht = tp_c->hlist; ht; ht = ht->next) {
+ if (ht->prio != tp->prio)
+ continue;
+ if (arg->count >= arg->skip) {
+ if (arg->fn(tp, (unsigned long)ht, arg) < 0) {
+ arg->stop = 1;
+ return;
+ }
+ }
+ arg->count++;
+ for (h = 0; h <= ht->divisor; h++) {
+ for (n = ht->ht[h]; n; n = n->next) {
+ if (arg->count < arg->skip) {
+ arg->count++;
+ continue;
+ }
+ if (arg->fn(tp, (unsigned long)n, arg) < 0) {
+ arg->stop = 1;
+ return;
+ }
+ arg->count++;
+ }
+ }
+ }
+}
+
+static int u32_dump(struct tcf_proto *tp, unsigned long fh,
+ struct sk_buff *skb, struct tcmsg *t)
+{
+ struct tc_u_knode *n = (struct tc_u_knode *)fh;
+ struct nlattr *nest;
+
+ if (n == NULL)
+ return skb->len;
+
+ t->tcm_handle = n->handle;
+
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
+
+ if (TC_U32_KEY(n->handle) == 0) {
+ struct tc_u_hnode *ht = (struct tc_u_hnode *)fh;
+ u32 divisor = ht->divisor + 1;
+
+ NLA_PUT_U32(skb, TCA_U32_DIVISOR, divisor);
+ } else {
+ NLA_PUT(skb, TCA_U32_SEL,
+ sizeof(n->sel) + n->sel.nkeys*sizeof(struct tc_u32_key),
+ &n->sel);
+ if (n->ht_up) {
+ u32 htid = n->handle & 0xFFFFF000;
+ NLA_PUT_U32(skb, TCA_U32_HASH, htid);
+ }
+ if (n->res.classid)
+ NLA_PUT_U32(skb, TCA_U32_CLASSID, n->res.classid);
+ if (n->ht_down)
+ NLA_PUT_U32(skb, TCA_U32_LINK, n->ht_down->handle);
+
+#ifdef CONFIG_CLS_U32_MARK
+ if (n->mark.val || n->mark.mask)
+ NLA_PUT(skb, TCA_U32_MARK, sizeof(n->mark), &n->mark);
+#endif
+
+ if (tcf_exts_dump(skb, &n->exts, &u32_ext_map) < 0)
+ goto nla_put_failure;
+
+#ifdef CONFIG_NET_CLS_IND
+ if (strlen(n->indev))
+ NLA_PUT_STRING(skb, TCA_U32_INDEV, n->indev);
+#endif
+#ifdef CONFIG_CLS_U32_PERF
+ NLA_PUT(skb, TCA_U32_PCNT,
+ sizeof(struct tc_u32_pcnt) + n->sel.nkeys*sizeof(u64),
+ n->pf);
+#endif
+ }
+
+ nla_nest_end(skb, nest);
+
+ if (TC_U32_KEY(n->handle))
+ if (tcf_exts_dump_stats(skb, &n->exts, &u32_ext_map) < 0)
+ goto nla_put_failure;
+ return skb->len;
+
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ return -1;
+}
+
+static struct tcf_proto_ops cls_u32_ops __read_mostly = {
+ .kind = "u32",
+ .classify = u32_classify,
+ .init = u32_init,
+ .destroy = u32_destroy,
+ .get = u32_get,
+ .put = u32_put,
+ .change = u32_change,
+ .delete = u32_delete,
+ .walk = u32_walk,
+ .dump = u32_dump,
+ .owner = THIS_MODULE,
+};
+
+static int __init init_u32(void)
+{
+ pr_info("u32 classifier\n");
+#ifdef CONFIG_CLS_U32_PERF
+ pr_info(" Performance counters on\n");
+#endif
+#ifdef CONFIG_NET_CLS_IND
+ pr_info(" input device check on\n");
+#endif
+#ifdef CONFIG_NET_CLS_ACT
+ pr_info(" Actions configured\n");
+#endif
+ return register_tcf_proto_ops(&cls_u32_ops);
+}
+
+static void __exit exit_u32(void)
+{
+ unregister_tcf_proto_ops(&cls_u32_ops);
+}
+
+module_init(init_u32)
+module_exit(exit_u32)
+MODULE_LICENSE("GPL");