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https://github.com/torvalds/linux
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c1b52739e4
Eric Dumazet pointed out that act_mirred needs to find the current net_ns, and struct net pointer is not provided in the call chain. His original patch made use of current->nsproxy->net_ns to find the network namespace, but this fails to work correctly for userspace code that makes use of netlink sockets in different network namespaces. Instead, pass the "struct net *" down along the call chain to where it is needed. This version removes the ifb changes as Eric has submitted that patch separately, but is otherwise identical to the previous version. Signed-off-by: Benjamin LaHaise <bcrl@kvack.org> Tested-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
132 lines
4.3 KiB
C
132 lines
4.3 KiB
C
#ifndef __NET_ACT_API_H
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#define __NET_ACT_API_H
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/*
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* Public police action API for classifiers/qdiscs
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*/
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#include <net/sch_generic.h>
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#include <net/pkt_sched.h>
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struct tcf_common {
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struct tcf_common *tcfc_next;
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u32 tcfc_index;
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int tcfc_refcnt;
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int tcfc_bindcnt;
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u32 tcfc_capab;
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int tcfc_action;
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struct tcf_t tcfc_tm;
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struct gnet_stats_basic_packed tcfc_bstats;
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struct gnet_stats_queue tcfc_qstats;
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struct gnet_stats_rate_est tcfc_rate_est;
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spinlock_t tcfc_lock;
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struct rcu_head tcfc_rcu;
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};
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#define tcf_next common.tcfc_next
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#define tcf_index common.tcfc_index
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#define tcf_refcnt common.tcfc_refcnt
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#define tcf_bindcnt common.tcfc_bindcnt
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#define tcf_capab common.tcfc_capab
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#define tcf_action common.tcfc_action
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#define tcf_tm common.tcfc_tm
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#define tcf_bstats common.tcfc_bstats
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#define tcf_qstats common.tcfc_qstats
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#define tcf_rate_est common.tcfc_rate_est
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#define tcf_lock common.tcfc_lock
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#define tcf_rcu common.tcfc_rcu
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struct tcf_police {
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struct tcf_common common;
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int tcfp_result;
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u32 tcfp_ewma_rate;
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u32 tcfp_burst;
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u32 tcfp_mtu;
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u32 tcfp_toks;
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u32 tcfp_ptoks;
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psched_time_t tcfp_t_c;
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struct qdisc_rate_table *tcfp_R_tab;
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struct qdisc_rate_table *tcfp_P_tab;
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};
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#define to_police(pc) \
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container_of(pc, struct tcf_police, common)
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struct tcf_hashinfo {
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struct tcf_common **htab;
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unsigned int hmask;
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rwlock_t *lock;
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};
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static inline unsigned int tcf_hash(u32 index, unsigned int hmask)
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{
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return index & hmask;
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}
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#ifdef CONFIG_NET_CLS_ACT
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#define ACT_P_CREATED 1
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#define ACT_P_DELETED 1
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struct tcf_act_hdr {
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struct tcf_common common;
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};
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struct tc_action {
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void *priv;
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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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};
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#define TCA_CAP_NONE 0
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struct tc_action_ops {
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struct tc_action_ops *next;
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struct tcf_hashinfo *hinfo;
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char kind[IFNAMSIZ];
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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 *, 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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int (*lookup)(struct tc_action *, u32);
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int (*init)(struct net *net, struct nlattr *nla,
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struct nlattr *est, struct tc_action *act, int ovr,
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int bind);
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int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *);
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};
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extern struct tcf_common *tcf_hash_lookup(u32 index,
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struct tcf_hashinfo *hinfo);
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extern void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo);
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extern int tcf_hash_release(struct tcf_common *p, int bind,
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struct tcf_hashinfo *hinfo);
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extern int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb,
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int type, struct tc_action *a);
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extern u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo);
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extern int tcf_hash_search(struct tc_action *a, u32 index);
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extern struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a,
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int bind, struct tcf_hashinfo *hinfo);
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extern struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est,
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struct tc_action *a, int size,
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int bind, u32 *idx_gen,
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struct tcf_hashinfo *hinfo);
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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, const struct tc_action *a, struct tcf_result *res);
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extern struct tc_action *tcf_action_init(struct net *net, struct nlattr *nla,
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struct nlattr *est, char *n, int ovr,
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int bind);
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extern struct tc_action *tcf_action_init_1(struct net *net, struct nlattr *nla,
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struct nlattr *est, char *n, int ovr,
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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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extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
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extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
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extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int);
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#endif /* CONFIG_NET_CLS_ACT */
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#endif
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