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net: sched: constify tcf_proto and tc_action
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
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95ec3eb417
commit
dc7f9f6e88
@ -72,7 +72,7 @@ struct tcf_act_hdr {
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struct tc_action {
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void *priv;
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struct tc_action_ops *ops;
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const struct tc_action_ops *ops;
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__u32 type; /* for backward compat(TCA_OLD_COMPAT) */
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__u32 order;
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struct tc_action *next;
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@ -86,7 +86,7 @@ struct tc_action_ops {
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__u32 type; /* TBD to match kind */
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__u32 capab; /* capabilities includes 4 bit version */
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struct module *owner;
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int (*act)(struct sk_buff *, struct tc_action *, struct tcf_result *);
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int (*act)(struct sk_buff *, const struct tc_action *, struct tcf_result *);
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int (*get_stats)(struct sk_buff *, struct tc_action *);
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int (*dump)(struct sk_buff *, struct tc_action *, int, int);
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int (*cleanup)(struct tc_action *, int bind);
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@ -115,7 +115,7 @@ extern void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo);
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extern int tcf_register_action(struct tc_action_ops *a);
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extern int tcf_unregister_action(struct tc_action_ops *a);
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extern void tcf_action_destroy(struct tc_action *a, int bind);
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extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res);
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extern int tcf_action_exec(struct sk_buff *skb, const struct tc_action *a, struct tcf_result *res);
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extern struct tc_action *tcf_action_init(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind);
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extern struct tc_action *tcf_action_init_1(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind);
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extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int);
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@ -99,9 +99,9 @@ static inline void qdisc_run(struct Qdisc *q)
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__qdisc_run(q);
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}
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extern int tc_classify_compat(struct sk_buff *skb, struct tcf_proto *tp,
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extern int tc_classify_compat(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res);
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extern int tc_classify(struct sk_buff *skb, struct tcf_proto *tp,
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extern int tc_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res);
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/* Calculate maximal size of packet seen by hard_start_xmit
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@ -181,8 +181,9 @@ struct tcf_proto_ops {
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struct tcf_proto_ops *next;
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char kind[IFNAMSIZ];
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int (*classify)(struct sk_buff*, struct tcf_proto*,
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struct tcf_result *);
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int (*classify)(struct sk_buff *,
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const struct tcf_proto *,
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struct tcf_result *);
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int (*init)(struct tcf_proto*);
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void (*destroy)(struct tcf_proto*);
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@ -205,8 +206,9 @@ struct tcf_proto {
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/* Fast access part */
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struct tcf_proto *next;
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void *root;
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int (*classify)(struct sk_buff*, struct tcf_proto*,
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struct tcf_result *);
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int (*classify)(struct sk_buff *,
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const struct tcf_proto *,
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struct tcf_result *);
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__be16 protocol;
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/* All the rest */
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@ -214,7 +216,7 @@ struct tcf_proto {
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u32 classid;
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struct Qdisc *q;
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void *data;
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struct tcf_proto_ops *ops;
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const struct tcf_proto_ops *ops;
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};
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struct qdisc_skb_cb {
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@ -365,10 +365,10 @@ static struct tc_action_ops *tc_lookup_action_id(u32 type)
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}
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#endif
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int tcf_action_exec(struct sk_buff *skb, struct tc_action *act,
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int tcf_action_exec(struct sk_buff *skb, const struct tc_action *act,
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struct tcf_result *res)
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{
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struct tc_action *a;
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const struct tc_action *a;
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int ret = -1;
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if (skb->tc_verd & TC_NCLS) {
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@ -500,7 +500,7 @@ fail:
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}
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static int tcf_csum(struct sk_buff *skb,
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struct tc_action *a, struct tcf_result *res)
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const struct tc_action *a, struct tcf_result *res)
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{
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struct tcf_csum *p = a->priv;
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int action;
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@ -125,7 +125,8 @@ static int tcf_gact_cleanup(struct tc_action *a, int bind)
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return 0;
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}
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static int tcf_gact(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
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static int tcf_gact(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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struct tcf_gact *gact = a->priv;
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int action = TC_ACT_SHOT;
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@ -195,7 +195,7 @@ static int tcf_ipt_cleanup(struct tc_action *a, int bind)
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return tcf_ipt_release(ipt, bind);
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}
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static int tcf_ipt(struct sk_buff *skb, struct tc_action *a,
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static int tcf_ipt(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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int ret = 0, result = 0;
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@ -154,7 +154,7 @@ static int tcf_mirred_cleanup(struct tc_action *a, int bind)
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return 0;
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}
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static int tcf_mirred(struct sk_buff *skb, struct tc_action *a,
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static int tcf_mirred(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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struct tcf_mirred *m = a->priv;
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@ -102,7 +102,7 @@ static int tcf_nat_cleanup(struct tc_action *a, int bind)
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return tcf_hash_release(&p->common, bind, &nat_hash_info);
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}
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static int tcf_nat(struct sk_buff *skb, struct tc_action *a,
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static int tcf_nat(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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struct tcf_nat *p = a->priv;
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@ -120,7 +120,7 @@ static int tcf_pedit_cleanup(struct tc_action *a, int bind)
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return 0;
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}
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static int tcf_pedit(struct sk_buff *skb, struct tc_action *a,
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static int tcf_pedit(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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struct tcf_pedit *p = a->priv;
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@ -282,7 +282,7 @@ static int tcf_act_police_cleanup(struct tc_action *a, int bind)
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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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static int tcf_act_police(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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struct tcf_police *police = a->priv;
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@ -36,7 +36,8 @@ static struct tcf_hashinfo simp_hash_info = {
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};
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#define SIMP_MAX_DATA 32
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static int tcf_simp(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
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static int tcf_simp(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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struct tcf_defact *d = a->priv;
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@ -39,7 +39,7 @@ static struct tcf_hashinfo skbedit_hash_info = {
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.lock = &skbedit_lock,
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};
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static int tcf_skbedit(struct sk_buff *skb, struct tc_action *a,
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static int tcf_skbedit(struct sk_buff *skb, const struct tc_action *a,
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struct tcf_result *res)
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{
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struct tcf_skbedit *d = a->priv;
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@ -40,9 +40,9 @@ static DEFINE_RWLOCK(cls_mod_lock);
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/* Find classifier type by string name */
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static struct tcf_proto_ops *tcf_proto_lookup_ops(struct nlattr *kind)
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static const struct tcf_proto_ops *tcf_proto_lookup_ops(struct nlattr *kind)
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{
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struct tcf_proto_ops *t = NULL;
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const struct tcf_proto_ops *t = NULL;
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if (kind) {
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read_lock(&cls_mod_lock);
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@ -132,7 +132,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
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struct Qdisc *q;
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struct tcf_proto **back, **chain;
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struct tcf_proto *tp;
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struct tcf_proto_ops *tp_ops;
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const struct tcf_proto_ops *tp_ops;
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const struct Qdisc_class_ops *cops;
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unsigned long cl;
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unsigned long fh;
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@ -39,7 +39,7 @@ static const struct tcf_ext_map basic_ext_map = {
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.police = TCA_BASIC_POLICE
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};
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static int basic_classify(struct sk_buff *skb, struct tcf_proto *tp,
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static int basic_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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int r;
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@ -101,7 +101,7 @@ struct cls_cgroup_head {
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struct tcf_ematch_tree ematches;
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};
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static int cls_cgroup_classify(struct sk_buff *skb, struct tcf_proto *tp,
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static int cls_cgroup_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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struct cls_cgroup_head *head = tp->root;
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@ -356,7 +356,7 @@ static u32 flow_key_get(struct sk_buff *skb, int key)
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}
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}
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static int flow_classify(struct sk_buff *skb, struct tcf_proto *tp,
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static int flow_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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struct flow_head *head = tp->root;
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@ -77,7 +77,7 @@ static inline int fw_hash(u32 handle)
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return handle & (HTSIZE - 1);
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}
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static int fw_classify(struct sk_buff *skb, struct tcf_proto *tp,
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static int fw_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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struct fw_head *head = (struct fw_head *)tp->root;
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@ -125,7 +125,7 @@ static inline int route4_hash_wild(void)
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return 0; \
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}
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static int route4_classify(struct sk_buff *skb, struct tcf_proto *tp,
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static int route4_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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struct route4_head *head = (struct route4_head *)tp->root;
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@ -130,7 +130,7 @@ static struct tcf_ext_map rsvp_ext_map = {
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return r; \
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}
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static int rsvp_classify(struct sk_buff *skb, struct tcf_proto *tp,
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static int rsvp_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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struct rsvp_session **sht = ((struct rsvp_head *)tp->root)->ht;
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@ -79,7 +79,7 @@ tcindex_lookup(struct tcindex_data *p, u16 key)
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}
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static int tcindex_classify(struct sk_buff *skb, struct tcf_proto *tp,
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static int tcindex_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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struct tcindex_data *p = PRIV(tp);
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@ -93,7 +93,7 @@ static inline unsigned int u32_hash_fold(__be32 key,
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return h;
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}
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static int u32_classify(struct sk_buff *skb, struct tcf_proto *tp, struct tcf_result *res)
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static int u32_classify(struct sk_buff *skb, const struct tcf_proto *tp, struct tcf_result *res)
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{
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struct {
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struct tc_u_knode *knode;
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@ -1644,7 +1644,7 @@ done:
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* to this qdisc, (optionally) tests for protocol and asks
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* specific classifiers.
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*/
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int tc_classify_compat(struct sk_buff *skb, struct tcf_proto *tp,
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int tc_classify_compat(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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__be16 protocol = skb->protocol;
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@ -1668,12 +1668,12 @@ int tc_classify_compat(struct sk_buff *skb, struct tcf_proto *tp,
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}
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EXPORT_SYMBOL(tc_classify_compat);
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int tc_classify(struct sk_buff *skb, struct tcf_proto *tp,
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int tc_classify(struct sk_buff *skb, const struct tcf_proto *tp,
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struct tcf_result *res)
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{
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int err = 0;
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#ifdef CONFIG_NET_CLS_ACT
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struct tcf_proto *otp = tp;
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const struct tcf_proto *otp = tp;
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reclassify:
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#endif
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