+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * net/sched/cls_tcindex.c     Packet classifier for skb->tc_index
- *
- * Written 1998,1999 by Werner Almesberger, EPFL ICA
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/skbuff.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/refcount.h>
-#include <net/act_api.h>
-#include <net/netlink.h>
-#include <net/pkt_cls.h>
-#include <net/sch_generic.h>
-#include <net/tc_wrapper.h>
-
-/*
- * Passing parameters to the root seems to be done more awkwardly than really
- * necessary. At least, u32 doesn't seem to use such dirty hacks. To be
- * verified. FIXME.
- */
-
-#define PERFECT_HASH_THRESHOLD 64      /* use perfect hash if not bigger */
-#define DEFAULT_HASH_SIZE      64      /* optimized for diffserv */
-
-
-struct tcindex_data;
-
-struct tcindex_filter_result {
-       struct tcf_exts         exts;
-       struct tcf_result       res;
-       struct tcindex_data     *p;
-       struct rcu_work         rwork;
-};
-
-struct tcindex_filter {
-       u16 key;
-       struct tcindex_filter_result result;
-       struct tcindex_filter __rcu *next;
-       struct rcu_work rwork;
-};
-
-
-struct tcindex_data {
-       struct tcindex_filter_result *perfect; /* perfect hash; NULL if none */
-       struct tcindex_filter __rcu **h; /* imperfect hash; */
-       struct tcf_proto *tp;
-       u16 mask;               /* AND key with mask */
-       u32 shift;              /* shift ANDed key to the right */
-       u32 hash;               /* hash table size; 0 if undefined */
-       u32 alloc_hash;         /* allocated size */
-       u32 fall_through;       /* 0: only classify if explicit match */
-       refcount_t refcnt;      /* a temporary refcnt for perfect hash */
-       struct rcu_work rwork;
-};
-
-static inline int tcindex_filter_is_set(struct tcindex_filter_result *r)
-{
-       return tcf_exts_has_actions(&r->exts) || r->res.classid;
-}
-
-static void tcindex_data_get(struct tcindex_data *p)
-{
-       refcount_inc(&p->refcnt);
-}
-
-static void tcindex_data_put(struct tcindex_data *p)
-{
-       if (refcount_dec_and_test(&p->refcnt)) {
-               kfree(p->perfect);
-               kfree(p->h);
-               kfree(p);
-       }
-}
-
-static struct tcindex_filter_result *tcindex_lookup(struct tcindex_data *p,
-                                                   u16 key)
-{
-       if (p->perfect) {
-               struct tcindex_filter_result *f = p->perfect + key;
-
-               return tcindex_filter_is_set(f) ? f : NULL;
-       } else if (p->h) {
-               struct tcindex_filter __rcu **fp;
-               struct tcindex_filter *f;
-
-               fp = &p->h[key % p->hash];
-               for (f = rcu_dereference_bh_rtnl(*fp);
-                    f;
-                    fp = &f->next, f = rcu_dereference_bh_rtnl(*fp))
-                       if (f->key == key)
-                               return &f->result;
-       }
-
-       return NULL;
-}
-
-TC_INDIRECT_SCOPE int tcindex_classify(struct sk_buff *skb,
-                                      const struct tcf_proto *tp,
-                                      struct tcf_result *res)
-{
-       struct tcindex_data *p = rcu_dereference_bh(tp->root);
-       struct tcindex_filter_result *f;
-       int key = (skb->tc_index & p->mask) >> p->shift;
-
-       pr_debug("tcindex_classify(skb %p,tp %p,res %p),p %p\n",
-                skb, tp, res, p);
-
-       f = tcindex_lookup(p, key);
-       if (!f) {
-               struct Qdisc *q = tcf_block_q(tp->chain->block);
-
-               if (!p->fall_through)
-                       return -1;
-               res->classid = TC_H_MAKE(TC_H_MAJ(q->handle), key);
-               res->class = 0;
-               pr_debug("alg 0x%x\n", res->classid);
-               return 0;
-       }
-       *res = f->res;
-       pr_debug("map 0x%x\n", res->classid);
-
-       return tcf_exts_exec(skb, &f->exts, res);
-}
-
-
-static void *tcindex_get(struct tcf_proto *tp, u32 handle)
-{
-       struct tcindex_data *p = rtnl_dereference(tp->root);
-       struct tcindex_filter_result *r;
-
-       pr_debug("tcindex_get(tp %p,handle 0x%08x)\n", tp, handle);
-       if (p->perfect && handle >= p->alloc_hash)
-               return NULL;
-       r = tcindex_lookup(p, handle);
-       return r && tcindex_filter_is_set(r) ? r : NULL;
-}
-
-static int tcindex_init(struct tcf_proto *tp)
-{
-       struct tcindex_data *p;
-
-       pr_debug("tcindex_init(tp %p)\n", tp);
-       p = kzalloc(sizeof(struct tcindex_data), GFP_KERNEL);
-       if (!p)
-               return -ENOMEM;
-
-       p->mask = 0xffff;
-       p->hash = DEFAULT_HASH_SIZE;
-       p->fall_through = 1;
-       refcount_set(&p->refcnt, 1); /* Paired with tcindex_destroy_work() */
-
-       rcu_assign_pointer(tp->root, p);
-       return 0;
-}
-
-static void __tcindex_destroy_rexts(struct tcindex_filter_result *r)
-{
-       tcf_exts_destroy(&r->exts);
-       tcf_exts_put_net(&r->exts);
-       tcindex_data_put(r->p);
-}
-
-static void tcindex_destroy_rexts_work(struct work_struct *work)
-{
-       struct tcindex_filter_result *r;
-
-       r = container_of(to_rcu_work(work),
-                        struct tcindex_filter_result,
-                        rwork);
-       rtnl_lock();
-       __tcindex_destroy_rexts(r);
-       rtnl_unlock();
-}
-
-static void __tcindex_destroy_fexts(struct tcindex_filter *f)
-{
-       tcf_exts_destroy(&f->result.exts);
-       tcf_exts_put_net(&f->result.exts);
-       kfree(f);
-}
-
-static void tcindex_destroy_fexts_work(struct work_struct *work)
-{
-       struct tcindex_filter *f = container_of(to_rcu_work(work),
-                                               struct tcindex_filter,
-                                               rwork);
-
-       rtnl_lock();
-       __tcindex_destroy_fexts(f);
-       rtnl_unlock();
-}
-
-static int tcindex_delete(struct tcf_proto *tp, void *arg, bool *last,
-                         bool rtnl_held, struct netlink_ext_ack *extack)
-{
-       struct tcindex_data *p = rtnl_dereference(tp->root);
-       struct tcindex_filter_result *r = arg;
-       struct tcindex_filter __rcu **walk;
-       struct tcindex_filter *f = NULL;
-
-       pr_debug("tcindex_delete(tp %p,arg %p),p %p\n", tp, arg, p);
-       if (p->perfect) {
-               if (!r->res.class)
-                       return -ENOENT;
-       } else {
-               int i;
-
-               for (i = 0; i < p->hash; i++) {
-                       walk = p->h + i;
-                       for (f = rtnl_dereference(*walk); f;
-                            walk = &f->next, f = rtnl_dereference(*walk)) {
-                               if (&f->result == r)
-                                       goto found;
-                       }
-               }
-               return -ENOENT;
-
-found:
-               rcu_assign_pointer(*walk, rtnl_dereference(f->next));
-       }
-       tcf_unbind_filter(tp, &r->res);
-       /* all classifiers are required to call tcf_exts_destroy() after rcu
-        * grace period, since converted-to-rcu actions are relying on that
-        * in cleanup() callback
-        */
-       if (f) {
-               if (tcf_exts_get_net(&f->result.exts))
-                       tcf_queue_work(&f->rwork, tcindex_destroy_fexts_work);
-               else
-                       __tcindex_destroy_fexts(f);
-       } else {
-               tcindex_data_get(p);
-
-               if (tcf_exts_get_net(&r->exts))
-                       tcf_queue_work(&r->rwork, tcindex_destroy_rexts_work);
-               else
-                       __tcindex_destroy_rexts(r);
-       }
-
-       *last = false;
-       return 0;
-}
-
-static void tcindex_destroy_work(struct work_struct *work)
-{
-       struct tcindex_data *p = container_of(to_rcu_work(work),
-                                             struct tcindex_data,
-                                             rwork);
-
-       tcindex_data_put(p);
-}
-
-static inline int
-valid_perfect_hash(struct tcindex_data *p)
-{
-       return  p->hash > (p->mask >> p->shift);
-}
-
-static const struct nla_policy tcindex_policy[TCA_TCINDEX_MAX + 1] = {
-       [TCA_TCINDEX_HASH]              = { .type = NLA_U32 },
-       [TCA_TCINDEX_MASK]              = { .type = NLA_U16 },
-       [TCA_TCINDEX_SHIFT]             = { .type = NLA_U32 },
-       [TCA_TCINDEX_FALL_THROUGH]      = { .type = NLA_U32 },
-       [TCA_TCINDEX_CLASSID]           = { .type = NLA_U32 },
-};
-
-static int tcindex_filter_result_init(struct tcindex_filter_result *r,
-                                     struct tcindex_data *p,
-                                     struct net *net)
-{
-       memset(r, 0, sizeof(*r));
-       r->p = p;
-       return tcf_exts_init(&r->exts, net, TCA_TCINDEX_ACT,
-                            TCA_TCINDEX_POLICE);
-}
-
-static void tcindex_free_perfect_hash(struct tcindex_data *cp);
-
-static void tcindex_partial_destroy_work(struct work_struct *work)
-{
-       struct tcindex_data *p = container_of(to_rcu_work(work),
-                                             struct tcindex_data,
-                                             rwork);
-
-       rtnl_lock();
-       if (p->perfect)
-               tcindex_free_perfect_hash(p);
-       kfree(p);
-       rtnl_unlock();
-}
-
-static void tcindex_free_perfect_hash(struct tcindex_data *cp)
-{
-       int i;
-
-       for (i = 0; i < cp->hash; i++)
-               tcf_exts_destroy(&cp->perfect[i].exts);
-       kfree(cp->perfect);
-}
-
-static int tcindex_alloc_perfect_hash(struct net *net, struct tcindex_data *cp)
-{
-       int i, err = 0;
-
-       cp->perfect = kcalloc(cp->hash, sizeof(struct tcindex_filter_result),
-                             GFP_KERNEL | __GFP_NOWARN);
-       if (!cp->perfect)
-               return -ENOMEM;
-
-       for (i = 0; i < cp->hash; i++) {
-               err = tcf_exts_init(&cp->perfect[i].exts, net,
-                                   TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
-               if (err < 0)
-                       goto errout;
-               cp->perfect[i].p = cp;
-       }
-
-       return 0;
-
-errout:
-       tcindex_free_perfect_hash(cp);
-       return err;
-}
-
-static int
-tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
-                 u32 handle, struct tcindex_data *p,
-                 struct tcindex_filter_result *r, struct nlattr **tb,
-                 struct nlattr *est, u32 flags, struct netlink_ext_ack *extack)
-{
-       struct tcindex_filter_result new_filter_result;
-       struct tcindex_data *cp = NULL, *oldp;
-       struct tcindex_filter *f = NULL; /* make gcc behave */
-       struct tcf_result cr = {};
-       int err, balloc = 0;
-       struct tcf_exts e;
-
-       err = tcf_exts_init(&e, net, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
-       if (err < 0)
-               return err;
-       err = tcf_exts_validate(net, tp, tb, est, &e, flags, extack);
-       if (err < 0)
-               goto errout;
-
-       err = -ENOMEM;
-       /* tcindex_data attributes must look atomic to classifier/lookup so
-        * allocate new tcindex data and RCU assign it onto root. Keeping
-        * perfect hash and hash pointers from old data.
-        */
-       cp = kzalloc(sizeof(*cp), GFP_KERNEL);
-       if (!cp)
-               goto errout;
-
-       cp->mask = p->mask;
-       cp->shift = p->shift;
-       cp->hash = p->hash;
-       cp->alloc_hash = p->alloc_hash;
-       cp->fall_through = p->fall_through;
-       cp->tp = tp;
-       refcount_set(&cp->refcnt, 1); /* Paired with tcindex_destroy_work() */
-
-       if (tb[TCA_TCINDEX_HASH])
-               cp->hash = nla_get_u32(tb[TCA_TCINDEX_HASH]);
-
-       if (tb[TCA_TCINDEX_MASK])
-               cp->mask = nla_get_u16(tb[TCA_TCINDEX_MASK]);
-
-       if (tb[TCA_TCINDEX_SHIFT]) {
-               cp->shift = nla_get_u32(tb[TCA_TCINDEX_SHIFT]);
-               if (cp->shift > 16) {
-                       err = -EINVAL;
-                       goto errout;
-               }
-       }
-       if (!cp->hash) {
-               /* Hash not specified, use perfect hash if the upper limit
-                * of the hashing index is below the threshold.
-                */
-               if ((cp->mask >> cp->shift) < PERFECT_HASH_THRESHOLD)
-                       cp->hash = (cp->mask >> cp->shift) + 1;
-               else
-                       cp->hash = DEFAULT_HASH_SIZE;
-       }
-
-       if (p->perfect) {
-               int i;
-
-               if (tcindex_alloc_perfect_hash(net, cp) < 0)
-                       goto errout;
-               cp->alloc_hash = cp->hash;
-               for (i = 0; i < min(cp->hash, p->hash); i++)
-                       cp->perfect[i].res = p->perfect[i].res;
-               balloc = 1;
-       }
-       cp->h = p->h;
-
-       err = tcindex_filter_result_init(&new_filter_result, cp, net);
-       if (err < 0)
-               goto errout_alloc;
-       if (r)
-               cr = r->res;
-
-       err = -EBUSY;
-
-       /* Hash already allocated, make sure that we still meet the
-        * requirements for the allocated hash.
-        */
-       if (cp->perfect) {
-               if (!valid_perfect_hash(cp) ||
-                   cp->hash > cp->alloc_hash)
-                       goto errout_alloc;
-       } else if (cp->h && cp->hash != cp->alloc_hash) {
-               goto errout_alloc;
-       }
-
-       err = -EINVAL;
-       if (tb[TCA_TCINDEX_FALL_THROUGH])
-               cp->fall_through = nla_get_u32(tb[TCA_TCINDEX_FALL_THROUGH]);
-
-       if (!cp->perfect && !cp->h)
-               cp->alloc_hash = cp->hash;
-
-       /* Note: this could be as restrictive as if (handle & ~(mask >> shift))
-        * but then, we'd fail handles that may become valid after some future
-        * mask change. While this is extremely unlikely to ever matter,
-        * the check below is safer (and also more backwards-compatible).
-        */
-       if (cp->perfect || valid_perfect_hash(cp))
-               if (handle >= cp->alloc_hash)
-                       goto errout_alloc;
-
-
-       err = -ENOMEM;
-       if (!cp->perfect && !cp->h) {
-               if (valid_perfect_hash(cp)) {
-                       if (tcindex_alloc_perfect_hash(net, cp) < 0)
-                               goto errout_alloc;
-                       balloc = 1;
-               } else {
-                       struct tcindex_filter __rcu **hash;
-
-                       hash = kcalloc(cp->hash,
-                                      sizeof(struct tcindex_filter *),
-                                      GFP_KERNEL);
-
-                       if (!hash)
-                               goto errout_alloc;
-
-                       cp->h = hash;
-                       balloc = 2;
-               }
-       }
-
-       if (cp->perfect)
-               r = cp->perfect + handle;
-       else
-               r = tcindex_lookup(cp, handle) ? : &new_filter_result;
-
-       if (r == &new_filter_result) {
-               f = kzalloc(sizeof(*f), GFP_KERNEL);
-               if (!f)
-                       goto errout_alloc;
-               f->key = handle;
-               f->next = NULL;
-               err = tcindex_filter_result_init(&f->result, cp, net);
-               if (err < 0) {
-                       kfree(f);
-                       goto errout_alloc;
-               }
-       }
-
-       if (tb[TCA_TCINDEX_CLASSID]) {
-               cr.classid = nla_get_u32(tb[TCA_TCINDEX_CLASSID]);
-               tcf_bind_filter(tp, &cr, base);
-       }
-
-       oldp = p;
-       r->res = cr;
-       tcf_exts_change(&r->exts, &e);
-
-       rcu_assign_pointer(tp->root, cp);
-
-       if (r == &new_filter_result) {
-               struct tcindex_filter *nfp;
-               struct tcindex_filter __rcu **fp;
-
-               f->result.res = r->res;
-               tcf_exts_change(&f->result.exts, &r->exts);
-
-               fp = cp->h + (handle % cp->hash);
-               for (nfp = rtnl_dereference(*fp);
-                    nfp;
-                    fp = &nfp->next, nfp = rtnl_dereference(*fp))
-                               ; /* nothing */
-
-               rcu_assign_pointer(*fp, f);
-       } else {
-               tcf_exts_destroy(&new_filter_result.exts);
-       }
-
-       if (oldp)
-               tcf_queue_work(&oldp->rwork, tcindex_partial_destroy_work);
-       return 0;
-
-errout_alloc:
-       if (balloc == 1)
-               tcindex_free_perfect_hash(cp);
-       else if (balloc == 2)
-               kfree(cp->h);
-       tcf_exts_destroy(&new_filter_result.exts);
-errout:
-       kfree(cp);
-       tcf_exts_destroy(&e);
-       return err;
-}
-
-static int
-tcindex_change(struct net *net, struct sk_buff *in_skb,
-              struct tcf_proto *tp, unsigned long base, u32 handle,
-              struct nlattr **tca, void **arg, u32 flags,
-              struct netlink_ext_ack *extack)
-{
-       struct nlattr *opt = tca[TCA_OPTIONS];
-       struct nlattr *tb[TCA_TCINDEX_MAX + 1];
-       struct tcindex_data *p = rtnl_dereference(tp->root);
-       struct tcindex_filter_result *r = *arg;
-       int err;
-
-       pr_debug("tcindex_change(tp %p,handle 0x%08x,tca %p,arg %p),opt %p,"
-           "p %p,r %p,*arg %p\n",
-           tp, handle, tca, arg, opt, p, r, *arg);
-
-       if (!opt)
-               return 0;
-
-       err = nla_parse_nested_deprecated(tb, TCA_TCINDEX_MAX, opt,
-                                         tcindex_policy, NULL);
-       if (err < 0)
-               return err;
-
-       return tcindex_set_parms(net, tp, base, handle, p, r, tb,
-                                tca[TCA_RATE], flags, extack);
-}
-
-static void tcindex_walk(struct tcf_proto *tp, struct tcf_walker *walker,
-                        bool rtnl_held)
-{
-       struct tcindex_data *p = rtnl_dereference(tp->root);
-       struct tcindex_filter *f, *next;
-       int i;
-
-       pr_debug("tcindex_walk(tp %p,walker %p),p %p\n", tp, walker, p);
-       if (p->perfect) {
-               for (i = 0; i < p->hash; i++) {
-                       if (!p->perfect[i].res.class)
-                               continue;
-                       if (!tc_cls_stats_dump(tp, walker, p->perfect + i))
-                               return;
-               }
-       }
-       if (!p->h)
-               return;
-       for (i = 0; i < p->hash; i++) {
-               for (f = rtnl_dereference(p->h[i]); f; f = next) {
-                       next = rtnl_dereference(f->next);
-                       if (!tc_cls_stats_dump(tp, walker, &f->result))
-                               return;
-               }
-       }
-}
-
-static void tcindex_destroy(struct tcf_proto *tp, bool rtnl_held,
-                           struct netlink_ext_ack *extack)
-{
-       struct tcindex_data *p = rtnl_dereference(tp->root);
-       int i;
-
-       pr_debug("tcindex_destroy(tp %p),p %p\n", tp, p);
-
-       if (p->perfect) {
-               for (i = 0; i < p->hash; i++) {
-                       struct tcindex_filter_result *r = p->perfect + i;
-
-                       /* tcf_queue_work() does not guarantee the ordering we
-                        * want, so we have to take this refcnt temporarily to
-                        * ensure 'p' is freed after all tcindex_filter_result
-                        * here. Imperfect hash does not need this, because it
-                        * uses linked lists rather than an array.
-                        */
-                       tcindex_data_get(p);
-
-                       tcf_unbind_filter(tp, &r->res);
-                       if (tcf_exts_get_net(&r->exts))
-                               tcf_queue_work(&r->rwork,
-                                              tcindex_destroy_rexts_work);
-                       else
-                               __tcindex_destroy_rexts(r);
-               }
-       }
-
-       for (i = 0; p->h && i < p->hash; i++) {
-               struct tcindex_filter *f, *next;
-               bool last;
-
-               for (f = rtnl_dereference(p->h[i]); f; f = next) {
-                       next = rtnl_dereference(f->next);
-                       tcindex_delete(tp, &f->result, &last, rtnl_held, NULL);
-               }
-       }
-
-       tcf_queue_work(&p->rwork, tcindex_destroy_work);
-}
-
-
-static int tcindex_dump(struct net *net, struct tcf_proto *tp, void *fh,
-                       struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
-{
-       struct tcindex_data *p = rtnl_dereference(tp->root);
-       struct tcindex_filter_result *r = fh;
-       struct nlattr *nest;
-
-       pr_debug("tcindex_dump(tp %p,fh %p,skb %p,t %p),p %p,r %p\n",
-                tp, fh, skb, t, p, r);
-       pr_debug("p->perfect %p p->h %p\n", p->perfect, p->h);
-
-       nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
-       if (nest == NULL)
-               goto nla_put_failure;
-
-       if (!fh) {
-               t->tcm_handle = ~0; /* whatever ... */
-               if (nla_put_u32(skb, TCA_TCINDEX_HASH, p->hash) ||
-                   nla_put_u16(skb, TCA_TCINDEX_MASK, p->mask) ||
-                   nla_put_u32(skb, TCA_TCINDEX_SHIFT, p->shift) ||
-                   nla_put_u32(skb, TCA_TCINDEX_FALL_THROUGH, p->fall_through))
-                       goto nla_put_failure;
-               nla_nest_end(skb, nest);
-       } else {
-               if (p->perfect) {
-                       t->tcm_handle = r - p->perfect;
-               } else {
-                       struct tcindex_filter *f;
-                       struct tcindex_filter __rcu **fp;
-                       int i;
-
-                       t->tcm_handle = 0;
-                       for (i = 0; !t->tcm_handle && i < p->hash; i++) {
-                               fp = &p->h[i];
-                               for (f = rtnl_dereference(*fp);
-                                    !t->tcm_handle && f;
-                                    fp = &f->next, f = rtnl_dereference(*fp)) {
-                                       if (&f->result == r)
-                                               t->tcm_handle = f->key;
-                               }
-                       }
-               }
-               pr_debug("handle = %d\n", t->tcm_handle);
-               if (r->res.class &&
-                   nla_put_u32(skb, TCA_TCINDEX_CLASSID, r->res.classid))
-                       goto nla_put_failure;
-
-               if (tcf_exts_dump(skb, &r->exts) < 0)
-                       goto nla_put_failure;
-               nla_nest_end(skb, nest);
-
-               if (tcf_exts_dump_stats(skb, &r->exts) < 0)
-                       goto nla_put_failure;
-       }
-
-       return skb->len;
-
-nla_put_failure:
-       nla_nest_cancel(skb, nest);
-       return -1;
-}
-
-static void tcindex_bind_class(void *fh, u32 classid, unsigned long cl,
-                              void *q, unsigned long base)
-{
-       struct tcindex_filter_result *r = fh;
-
-       tc_cls_bind_class(classid, cl, q, &r->res, base);
-}
-
-static struct tcf_proto_ops cls_tcindex_ops __read_mostly = {
-       .kind           =       "tcindex",
-       .classify       =       tcindex_classify,
-       .init           =       tcindex_init,
-       .destroy        =       tcindex_destroy,
-       .get            =       tcindex_get,
-       .change         =       tcindex_change,
-       .delete         =       tcindex_delete,
-       .walk           =       tcindex_walk,
-       .dump           =       tcindex_dump,
-       .bind_class     =       tcindex_bind_class,
-       .owner          =       THIS_MODULE,
-};
-
-static int __init init_tcindex(void)
-{
-       return register_tcf_proto_ops(&cls_tcindex_ops);
-}
-
-static void __exit exit_tcindex(void)
-{
-       unregister_tcf_proto_ops(&cls_tcindex_ops);
-}
-
-module_init(init_tcindex)
-module_exit(exit_tcindex)
-MODULE_LICENSE("GPL");
 
+++ /dev/null
-[
-    {
-        "id": "8293",
-        "name": "Add tcindex filter with default action",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress"
-        ],
-        "cmdUnderTest": "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex classid 1:1",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 1 protocol ip tcindex",
-        "matchPattern": "^filter parent ffff: protocol ip pref 1 tcindex chain 0 handle 0x0001 classid 1:1",
-        "matchCount": "1",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "7281",
-        "name": "Add tcindex filter with hash size and pass action",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress"
-        ],
-        "cmdUnderTest": "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex hash 32 fall_through classid 1:1 action pass",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 1 protocol ip tcindex",
-        "matchPattern": "^filter parent ffff: protocol ip pref.*tcindex chain [0-9]+ handle 0x0001 classid 1:1.*action order [0-9]+: gact action pass",
-        "matchCount": "1",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "b294",
-        "name": "Add tcindex filter with mask shift and reclassify action",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress"
-        ],
-        "cmdUnderTest": "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex hash 32 mask 1 shift 2 fall_through classid 1:1 action reclassify",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 1 protocol ip tcindex",
-        "matchPattern": "^filter parent ffff: protocol ip pref.*tcindex chain [0-9]+ handle 0x0001 classid 1:1.*action order [0-9]+: gact action reclassify",
-        "matchCount": "1",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "0532",
-        "name": "Add tcindex filter with pass_on and continue actions",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress"
-        ],
-        "cmdUnderTest": "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex hash 32 mask 1 shift 2 pass_on classid 1:1 action continue",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 1 protocol ip tcindex",
-        "matchPattern": "^filter parent ffff: protocol ip pref.*tcindex chain [0-9]+ handle 0x0001 classid 1:1.*action order [0-9]+: gact action continue",
-        "matchCount": "1",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "d473",
-        "name": "Add tcindex filter with pipe action",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress"
-        ],
-        "cmdUnderTest": "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex hash 32 mask 1 shift 2 fall_through classid 1:1 action pipe",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 1 protocol ip tcindex",
-        "matchPattern": "^filter parent ffff: protocol ip pref.*tcindex chain [0-9]+ handle 0x0001 classid 1:1.*action order [0-9]+: gact action pipe",
-        "matchCount": "1",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "2940",
-        "name": "Add tcindex filter with miltiple actions",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress"
-        ],
-        "cmdUnderTest": "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 7 tcindex hash 32 mask 1 shift 2 fall_through classid 1:1 action skbedit mark 7 pipe action gact drop",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 7 protocol ip tcindex",
-        "matchPattern": "^filter parent ffff: protocol ip pref 7 tcindex.*handle 0x0001.*action.*skbedit.*mark 7 pipe.*action.*gact action drop",
-        "matchCount": "1",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "1893",
-        "name": "List tcindex filters",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress",
-            "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex classid 1:1",
-            "$TC filter add dev $DEV1 parent ffff: handle 2 protocol ip prio 1 tcindex classid 1:1"
-        ],
-        "cmdUnderTest": "$TC filter show dev $DEV1 parent ffff:",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter show dev $DEV1 parent ffff:",
-        "matchPattern": "handle 0x000[0-9]+ classid 1:1",
-        "matchCount": "2",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "2041",
-        "name": "Change tcindex filter with pass action",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress",
-            "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex classid 1:1 action drop"
-        ],
-        "cmdUnderTest": "$TC filter change dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex classid 1:1 action pass",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 1 protocol ip tcindex",
-        "matchPattern": "handle 0x0001 classid 1:1.*action order [0-9]+: gact action pass",
-        "matchCount": "1",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "9203",
-        "name": "Replace tcindex filter with pass action",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress",
-            "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex classid 1:1 action drop"
-        ],
-        "cmdUnderTest": "$TC filter replace dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex classid 1:1 action pass",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 1 protocol ip tcindex",
-        "matchPattern": "handle 0x0001 classid 1:1.*action order [0-9]+: gact action pass",
-        "matchCount": "1",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    },
-    {
-        "id": "7957",
-        "name": "Delete tcindex filter with drop action",
-        "category": [
-            "filter",
-            "tcindex"
-        ],
-        "plugins": {
-            "requires": "nsPlugin"
-        },
-        "setup": [
-            "$TC qdisc add dev $DEV1 ingress",
-            "$TC filter add dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex classid 1:1 action drop"
-        ],
-        "cmdUnderTest": "$TC filter del dev $DEV1 parent ffff: handle 1 protocol ip prio 1 tcindex classid 1:1 action drop",
-        "expExitCode": "0",
-        "verifyCmd": "$TC filter get dev $DEV1 parent ffff: handle 1 prio 1 protocol ip tcindex",
-        "matchPattern": "handle 0x0001 classid 1:1.*action order [0-9]+: gact action drop",
-        "matchCount": "0",
-        "teardown": [
-            "$TC qdisc del dev $DEV1 ingress"
-        ]
-    }
-]