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1018 lines
24 KiB
1018 lines
24 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __NET_PKT_CLS_H |
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#define __NET_PKT_CLS_H |
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|
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#include <linux/pkt_cls.h> |
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#include <linux/workqueue.h> |
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#include <net/sch_generic.h> |
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#include <net/act_api.h> |
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#include <net/net_namespace.h> |
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|
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/* TC action not accessible from user space */ |
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#define TC_ACT_CONSUMED (TC_ACT_VALUE_MAX + 1) |
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|
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/* Basic packet classifier frontend definitions. */ |
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|
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struct tcf_walker { |
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int stop; |
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int skip; |
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int count; |
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bool nonempty; |
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unsigned long cookie; |
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int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); |
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}; |
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|
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int register_tcf_proto_ops(struct tcf_proto_ops *ops); |
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int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); |
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struct tcf_block_ext_info { |
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enum flow_block_binder_type binder_type; |
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tcf_chain_head_change_t *chain_head_change; |
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void *chain_head_change_priv; |
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u32 block_index; |
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}; |
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struct tcf_qevent { |
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struct tcf_block *block; |
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struct tcf_block_ext_info info; |
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struct tcf_proto __rcu *filter_chain; |
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}; |
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|
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struct tcf_block_cb; |
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bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
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|
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#ifdef CONFIG_NET_CLS |
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struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, |
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u32 chain_index); |
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void tcf_chain_put_by_act(struct tcf_chain *chain); |
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struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, |
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struct tcf_chain *chain); |
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struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, |
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struct tcf_proto *tp); |
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void tcf_block_netif_keep_dst(struct tcf_block *block); |
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int tcf_block_get(struct tcf_block **p_block, |
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struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
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struct netlink_ext_ack *extack); |
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int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
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struct tcf_block_ext_info *ei, |
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struct netlink_ext_ack *extack); |
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void tcf_block_put(struct tcf_block *block); |
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void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
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struct tcf_block_ext_info *ei); |
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|
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static inline bool tcf_block_shared(struct tcf_block *block) |
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{ |
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return block->index; |
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} |
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|
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static inline bool tcf_block_non_null_shared(struct tcf_block *block) |
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{ |
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return block && block->index; |
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} |
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|
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static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
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{ |
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WARN_ON(tcf_block_shared(block)); |
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return block->q; |
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} |
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|
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int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
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struct tcf_result *res, bool compat_mode); |
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int tcf_classify_ingress(struct sk_buff *skb, |
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const struct tcf_block *ingress_block, |
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const struct tcf_proto *tp, struct tcf_result *res, |
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bool compat_mode); |
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#else |
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static inline bool tcf_block_shared(struct tcf_block *block) |
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{ |
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return false; |
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} |
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|
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static inline bool tcf_block_non_null_shared(struct tcf_block *block) |
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{ |
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return false; |
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} |
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static inline |
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int tcf_block_get(struct tcf_block **p_block, |
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struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
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struct netlink_ext_ack *extack) |
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{ |
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return 0; |
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} |
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static inline |
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int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
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struct tcf_block_ext_info *ei, |
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struct netlink_ext_ack *extack) |
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{ |
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return 0; |
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} |
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static inline void tcf_block_put(struct tcf_block *block) |
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{ |
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} |
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static inline |
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void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
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struct tcf_block_ext_info *ei) |
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{ |
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} |
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static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
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{ |
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return NULL; |
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} |
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static inline |
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int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb, |
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void *cb_priv) |
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{ |
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return 0; |
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} |
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static inline |
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void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb, |
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void *cb_priv) |
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{ |
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} |
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static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
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struct tcf_result *res, bool compat_mode) |
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{ |
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return TC_ACT_UNSPEC; |
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} |
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static inline int tcf_classify_ingress(struct sk_buff *skb, |
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const struct tcf_block *ingress_block, |
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const struct tcf_proto *tp, |
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struct tcf_result *res, bool compat_mode) |
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{ |
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return TC_ACT_UNSPEC; |
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} |
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#endif |
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static inline unsigned long |
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__cls_set_class(unsigned long *clp, unsigned long cl) |
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{ |
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return xchg(clp, cl); |
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} |
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static inline void |
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__tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base) |
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{ |
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unsigned long cl; |
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|
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cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); |
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cl = __cls_set_class(&r->class, cl); |
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if (cl) |
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q->ops->cl_ops->unbind_tcf(q, cl); |
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} |
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static inline void |
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tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) |
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{ |
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struct Qdisc *q = tp->chain->block->q; |
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|
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/* Check q as it is not set for shared blocks. In that case, |
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* setting class is not supported. |
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*/ |
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if (!q) |
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return; |
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sch_tree_lock(q); |
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__tcf_bind_filter(q, r, base); |
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sch_tree_unlock(q); |
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} |
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static inline void |
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__tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r) |
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{ |
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unsigned long cl; |
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|
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if ((cl = __cls_set_class(&r->class, 0)) != 0) |
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q->ops->cl_ops->unbind_tcf(q, cl); |
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} |
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static inline void |
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tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) |
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{ |
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struct Qdisc *q = tp->chain->block->q; |
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|
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if (!q) |
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return; |
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__tcf_unbind_filter(q, r); |
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} |
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struct tcf_exts { |
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#ifdef CONFIG_NET_CLS_ACT |
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__u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
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int nr_actions; |
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struct tc_action **actions; |
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struct net *net; |
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#endif |
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/* Map to export classifier specific extension TLV types to the |
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* generic extensions API. Unsupported extensions must be set to 0. |
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*/ |
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int action; |
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int police; |
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}; |
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static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
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int action, int police) |
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{ |
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#ifdef CONFIG_NET_CLS_ACT |
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exts->type = 0; |
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exts->nr_actions = 0; |
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exts->net = net; |
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exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
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GFP_KERNEL); |
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if (!exts->actions) |
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return -ENOMEM; |
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#endif |
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exts->action = action; |
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exts->police = police; |
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return 0; |
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} |
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|
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/* Return false if the netns is being destroyed in cleanup_net(). Callers |
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* need to do cleanup synchronously in this case, otherwise may race with |
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* tc_action_net_exit(). Return true for other cases. |
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*/ |
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static inline bool tcf_exts_get_net(struct tcf_exts *exts) |
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{ |
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#ifdef CONFIG_NET_CLS_ACT |
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exts->net = maybe_get_net(exts->net); |
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return exts->net != NULL; |
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#else |
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return true; |
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#endif |
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} |
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static inline void tcf_exts_put_net(struct tcf_exts *exts) |
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{ |
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#ifdef CONFIG_NET_CLS_ACT |
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if (exts->net) |
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put_net(exts->net); |
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#endif |
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} |
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|
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#ifdef CONFIG_NET_CLS_ACT |
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#define tcf_exts_for_each_action(i, a, exts) \ |
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for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) |
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#else |
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#define tcf_exts_for_each_action(i, a, exts) \ |
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for (; 0; (void)(i), (void)(a), (void)(exts)) |
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#endif |
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static inline void |
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tcf_exts_stats_update(const struct tcf_exts *exts, |
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u64 bytes, u64 packets, u64 drops, u64 lastuse, |
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u8 used_hw_stats, bool used_hw_stats_valid) |
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{ |
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#ifdef CONFIG_NET_CLS_ACT |
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int i; |
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preempt_disable(); |
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for (i = 0; i < exts->nr_actions; i++) { |
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struct tc_action *a = exts->actions[i]; |
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tcf_action_stats_update(a, bytes, packets, drops, |
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lastuse, true); |
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a->used_hw_stats = used_hw_stats; |
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a->used_hw_stats_valid = used_hw_stats_valid; |
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} |
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preempt_enable(); |
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#endif |
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} |
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/** |
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* tcf_exts_has_actions - check if at least one action is present |
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* @exts: tc filter extensions handle |
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* |
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* Returns true if at least one action is present. |
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*/ |
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static inline bool tcf_exts_has_actions(struct tcf_exts *exts) |
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{ |
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#ifdef CONFIG_NET_CLS_ACT |
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return exts->nr_actions; |
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#else |
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return false; |
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#endif |
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} |
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/** |
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* tcf_exts_exec - execute tc filter extensions |
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* @skb: socket buffer |
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* @exts: tc filter extensions handle |
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* @res: desired result |
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* |
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* Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
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* a negative number if the filter must be considered unmatched or |
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* a positive action code (TC_ACT_*) which must be returned to the |
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* underlying layer. |
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*/ |
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static inline int |
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tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, |
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struct tcf_result *res) |
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{ |
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#ifdef CONFIG_NET_CLS_ACT |
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return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
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#endif |
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return TC_ACT_OK; |
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} |
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int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
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struct nlattr **tb, struct nlattr *rate_tlv, |
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struct tcf_exts *exts, bool ovr, bool rtnl_held, |
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struct netlink_ext_ack *extack); |
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void tcf_exts_destroy(struct tcf_exts *exts); |
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void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
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int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
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int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts); |
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int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); |
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/** |
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* struct tcf_pkt_info - packet information |
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*/ |
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struct tcf_pkt_info { |
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unsigned char * ptr; |
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int nexthdr; |
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}; |
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#ifdef CONFIG_NET_EMATCH |
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struct tcf_ematch_ops; |
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/** |
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* struct tcf_ematch - extended match (ematch) |
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* |
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* @matchid: identifier to allow userspace to reidentify a match |
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* @flags: flags specifying attributes and the relation to other matches |
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* @ops: the operations lookup table of the corresponding ematch module |
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* @datalen: length of the ematch specific configuration data |
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* @data: ematch specific data |
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*/ |
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struct tcf_ematch { |
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struct tcf_ematch_ops * ops; |
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unsigned long data; |
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unsigned int datalen; |
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u16 matchid; |
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u16 flags; |
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struct net *net; |
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}; |
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static inline int tcf_em_is_container(struct tcf_ematch *em) |
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{ |
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return !em->ops; |
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} |
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static inline int tcf_em_is_simple(struct tcf_ematch *em) |
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{ |
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return em->flags & TCF_EM_SIMPLE; |
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} |
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static inline int tcf_em_is_inverted(struct tcf_ematch *em) |
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{ |
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return em->flags & TCF_EM_INVERT; |
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} |
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static inline int tcf_em_last_match(struct tcf_ematch *em) |
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{ |
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return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; |
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} |
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static inline int tcf_em_early_end(struct tcf_ematch *em, int result) |
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{ |
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if (tcf_em_last_match(em)) |
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return 1; |
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if (result == 0 && em->flags & TCF_EM_REL_AND) |
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return 1; |
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if (result != 0 && em->flags & TCF_EM_REL_OR) |
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return 1; |
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return 0; |
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} |
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|
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/** |
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* struct tcf_ematch_tree - ematch tree handle |
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* |
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* @hdr: ematch tree header supplied by userspace |
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* @matches: array of ematches |
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*/ |
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struct tcf_ematch_tree { |
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struct tcf_ematch_tree_hdr hdr; |
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struct tcf_ematch * matches; |
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}; |
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/** |
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* struct tcf_ematch_ops - ematch module operations |
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* |
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* @kind: identifier (kind) of this ematch module |
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* @datalen: length of expected configuration data (optional) |
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* @change: called during validation (optional) |
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* @match: called during ematch tree evaluation, must return 1/0 |
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* @destroy: called during destroyage (optional) |
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* @dump: called during dumping process (optional) |
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* @owner: owner, must be set to THIS_MODULE |
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* @link: link to previous/next ematch module (internal use) |
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*/ |
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struct tcf_ematch_ops { |
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int kind; |
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int datalen; |
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int (*change)(struct net *net, void *, |
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int, struct tcf_ematch *); |
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int (*match)(struct sk_buff *, struct tcf_ematch *, |
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struct tcf_pkt_info *); |
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void (*destroy)(struct tcf_ematch *); |
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int (*dump)(struct sk_buff *, struct tcf_ematch *); |
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struct module *owner; |
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struct list_head link; |
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}; |
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int tcf_em_register(struct tcf_ematch_ops *); |
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void tcf_em_unregister(struct tcf_ematch_ops *); |
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int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, |
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struct tcf_ematch_tree *); |
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void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
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int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
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int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, |
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struct tcf_pkt_info *); |
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|
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/** |
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* tcf_em_tree_match - evaulate an ematch tree |
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* |
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* @skb: socket buffer of the packet in question |
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* @tree: ematch tree to be used for evaluation |
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* @info: packet information examined by classifier |
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* |
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* This function matches @skb against the ematch tree in @tree by going |
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* through all ematches respecting their logic relations returning |
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* as soon as the result is obvious. |
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* |
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* Returns 1 if the ematch tree as-one matches, no ematches are configured |
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* or ematch is not enabled in the kernel, otherwise 0 is returned. |
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*/ |
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static inline int tcf_em_tree_match(struct sk_buff *skb, |
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struct tcf_ematch_tree *tree, |
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struct tcf_pkt_info *info) |
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{ |
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if (tree->hdr.nmatches) |
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return __tcf_em_tree_match(skb, tree, info); |
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else |
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return 1; |
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} |
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|
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#define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
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|
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#else /* CONFIG_NET_EMATCH */ |
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|
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struct tcf_ematch_tree { |
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}; |
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|
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#define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) |
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#define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
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#define tcf_em_tree_dump(skb, t, tlv) (0) |
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#define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
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|
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#endif /* CONFIG_NET_EMATCH */ |
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|
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static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) |
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{ |
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switch (layer) { |
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case TCF_LAYER_LINK: |
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return skb_mac_header(skb); |
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case TCF_LAYER_NETWORK: |
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return skb_network_header(skb); |
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case TCF_LAYER_TRANSPORT: |
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return skb_transport_header(skb); |
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} |
|
|
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return NULL; |
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} |
|
|
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static inline int tcf_valid_offset(const struct sk_buff *skb, |
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const unsigned char *ptr, const int len) |
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{ |
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return likely((ptr + len) <= skb_tail_pointer(skb) && |
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ptr >= skb->head && |
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(ptr <= (ptr + len))); |
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} |
|
|
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static inline int |
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tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
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struct netlink_ext_ack *extack) |
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{ |
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char indev[IFNAMSIZ]; |
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struct net_device *dev; |
|
|
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if (nla_strscpy(indev, indev_tlv, IFNAMSIZ) < 0) { |
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NL_SET_ERR_MSG_ATTR(extack, indev_tlv, |
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"Interface name too long"); |
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return -EINVAL; |
|
} |
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dev = __dev_get_by_name(net, indev); |
|
if (!dev) { |
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NL_SET_ERR_MSG_ATTR(extack, indev_tlv, |
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"Network device not found"); |
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return -ENODEV; |
|
} |
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return dev->ifindex; |
|
} |
|
|
|
static inline bool |
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tcf_match_indev(struct sk_buff *skb, int ifindex) |
|
{ |
|
if (!ifindex) |
|
return true; |
|
if (!skb->skb_iif) |
|
return false; |
|
return ifindex == skb->skb_iif; |
|
} |
|
|
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int tc_setup_flow_action(struct flow_action *flow_action, |
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const struct tcf_exts *exts); |
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void tc_cleanup_flow_action(struct flow_action *flow_action); |
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|
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int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
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void *type_data, bool err_stop, bool rtnl_held); |
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int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp, |
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enum tc_setup_type type, void *type_data, bool err_stop, |
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u32 *flags, unsigned int *in_hw_count, bool rtnl_held); |
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int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp, |
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enum tc_setup_type type, void *type_data, bool err_stop, |
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u32 *old_flags, unsigned int *old_in_hw_count, |
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u32 *new_flags, unsigned int *new_in_hw_count, |
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bool rtnl_held); |
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int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp, |
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enum tc_setup_type type, void *type_data, bool err_stop, |
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u32 *flags, unsigned int *in_hw_count, bool rtnl_held); |
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int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp, |
|
bool add, flow_setup_cb_t *cb, |
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enum tc_setup_type type, void *type_data, |
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void *cb_priv, u32 *flags, unsigned int *in_hw_count); |
|
unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
|
|
|
#ifdef CONFIG_NET_CLS_ACT |
|
int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, |
|
enum flow_block_binder_type binder_type, |
|
struct nlattr *block_index_attr, |
|
struct netlink_ext_ack *extack); |
|
void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch); |
|
int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, |
|
struct netlink_ext_ack *extack); |
|
struct sk_buff *tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, |
|
struct sk_buff **to_free, int *ret); |
|
int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe); |
|
#else |
|
static inline int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, |
|
enum flow_block_binder_type binder_type, |
|
struct nlattr *block_index_attr, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch) |
|
{ |
|
} |
|
|
|
static inline int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline struct sk_buff * |
|
tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, |
|
struct sk_buff **to_free, int *ret) |
|
{ |
|
return skb; |
|
} |
|
|
|
static inline int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe) |
|
{ |
|
return 0; |
|
} |
|
#endif |
|
|
|
struct tc_cls_u32_knode { |
|
struct tcf_exts *exts; |
|
struct tcf_result *res; |
|
struct tc_u32_sel *sel; |
|
u32 handle; |
|
u32 val; |
|
u32 mask; |
|
u32 link_handle; |
|
u8 fshift; |
|
}; |
|
|
|
struct tc_cls_u32_hnode { |
|
u32 handle; |
|
u32 prio; |
|
unsigned int divisor; |
|
}; |
|
|
|
enum tc_clsu32_command { |
|
TC_CLSU32_NEW_KNODE, |
|
TC_CLSU32_REPLACE_KNODE, |
|
TC_CLSU32_DELETE_KNODE, |
|
TC_CLSU32_NEW_HNODE, |
|
TC_CLSU32_REPLACE_HNODE, |
|
TC_CLSU32_DELETE_HNODE, |
|
}; |
|
|
|
struct tc_cls_u32_offload { |
|
struct flow_cls_common_offload common; |
|
/* knode values */ |
|
enum tc_clsu32_command command; |
|
union { |
|
struct tc_cls_u32_knode knode; |
|
struct tc_cls_u32_hnode hnode; |
|
}; |
|
}; |
|
|
|
static inline bool tc_can_offload(const struct net_device *dev) |
|
{ |
|
return dev->features & NETIF_F_HW_TC; |
|
} |
|
|
|
static inline bool tc_can_offload_extack(const struct net_device *dev, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
bool can = tc_can_offload(dev); |
|
|
|
if (!can) |
|
NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); |
|
|
|
return can; |
|
} |
|
|
|
static inline bool |
|
tc_cls_can_offload_and_chain0(const struct net_device *dev, |
|
struct flow_cls_common_offload *common) |
|
{ |
|
if (!tc_can_offload_extack(dev, common->extack)) |
|
return false; |
|
if (common->chain_index) { |
|
NL_SET_ERR_MSG(common->extack, |
|
"Driver supports only offload of chain 0"); |
|
return false; |
|
} |
|
return true; |
|
} |
|
|
|
static inline bool tc_skip_hw(u32 flags) |
|
{ |
|
return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; |
|
} |
|
|
|
static inline bool tc_skip_sw(u32 flags) |
|
{ |
|
return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; |
|
} |
|
|
|
/* SKIP_HW and SKIP_SW are mutually exclusive flags. */ |
|
static inline bool tc_flags_valid(u32 flags) |
|
{ |
|
if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
|
TCA_CLS_FLAGS_VERBOSE)) |
|
return false; |
|
|
|
flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
|
if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
|
return false; |
|
|
|
return true; |
|
} |
|
|
|
static inline bool tc_in_hw(u32 flags) |
|
{ |
|
return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; |
|
} |
|
|
|
static inline void |
|
tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common, |
|
const struct tcf_proto *tp, u32 flags, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
cls_common->chain_index = tp->chain->index; |
|
cls_common->protocol = tp->protocol; |
|
cls_common->prio = tp->prio >> 16; |
|
if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
|
cls_common->extack = extack; |
|
} |
|
|
|
#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT) |
|
static inline struct tc_skb_ext *tc_skb_ext_alloc(struct sk_buff *skb) |
|
{ |
|
struct tc_skb_ext *tc_skb_ext = skb_ext_add(skb, TC_SKB_EXT); |
|
|
|
if (tc_skb_ext) |
|
memset(tc_skb_ext, 0, sizeof(*tc_skb_ext)); |
|
return tc_skb_ext; |
|
} |
|
#endif |
|
|
|
enum tc_matchall_command { |
|
TC_CLSMATCHALL_REPLACE, |
|
TC_CLSMATCHALL_DESTROY, |
|
TC_CLSMATCHALL_STATS, |
|
}; |
|
|
|
struct tc_cls_matchall_offload { |
|
struct flow_cls_common_offload common; |
|
enum tc_matchall_command command; |
|
struct flow_rule *rule; |
|
struct flow_stats stats; |
|
unsigned long cookie; |
|
}; |
|
|
|
enum tc_clsbpf_command { |
|
TC_CLSBPF_OFFLOAD, |
|
TC_CLSBPF_STATS, |
|
}; |
|
|
|
struct tc_cls_bpf_offload { |
|
struct flow_cls_common_offload common; |
|
enum tc_clsbpf_command command; |
|
struct tcf_exts *exts; |
|
struct bpf_prog *prog; |
|
struct bpf_prog *oldprog; |
|
const char *name; |
|
bool exts_integrated; |
|
}; |
|
|
|
struct tc_mqprio_qopt_offload { |
|
/* struct tc_mqprio_qopt must always be the first element */ |
|
struct tc_mqprio_qopt qopt; |
|
u16 mode; |
|
u16 shaper; |
|
u32 flags; |
|
u64 min_rate[TC_QOPT_MAX_QUEUE]; |
|
u64 max_rate[TC_QOPT_MAX_QUEUE]; |
|
}; |
|
|
|
/* This structure holds cookie structure that is passed from user |
|
* to the kernel for actions and classifiers |
|
*/ |
|
struct tc_cookie { |
|
u8 *data; |
|
u32 len; |
|
struct rcu_head rcu; |
|
}; |
|
|
|
struct tc_qopt_offload_stats { |
|
struct gnet_stats_basic_packed *bstats; |
|
struct gnet_stats_queue *qstats; |
|
}; |
|
|
|
enum tc_mq_command { |
|
TC_MQ_CREATE, |
|
TC_MQ_DESTROY, |
|
TC_MQ_STATS, |
|
TC_MQ_GRAFT, |
|
}; |
|
|
|
struct tc_mq_opt_offload_graft_params { |
|
unsigned long queue; |
|
u32 child_handle; |
|
}; |
|
|
|
struct tc_mq_qopt_offload { |
|
enum tc_mq_command command; |
|
u32 handle; |
|
union { |
|
struct tc_qopt_offload_stats stats; |
|
struct tc_mq_opt_offload_graft_params graft_params; |
|
}; |
|
}; |
|
|
|
enum tc_htb_command { |
|
/* Root */ |
|
TC_HTB_CREATE, /* Initialize HTB offload. */ |
|
TC_HTB_DESTROY, /* Destroy HTB offload. */ |
|
|
|
/* Classes */ |
|
/* Allocate qid and create leaf. */ |
|
TC_HTB_LEAF_ALLOC_QUEUE, |
|
/* Convert leaf to inner, preserve and return qid, create new leaf. */ |
|
TC_HTB_LEAF_TO_INNER, |
|
/* Delete leaf, while siblings remain. */ |
|
TC_HTB_LEAF_DEL, |
|
/* Delete leaf, convert parent to leaf, preserving qid. */ |
|
TC_HTB_LEAF_DEL_LAST, |
|
/* TC_HTB_LEAF_DEL_LAST, but delete driver data on hardware errors. */ |
|
TC_HTB_LEAF_DEL_LAST_FORCE, |
|
/* Modify parameters of a node. */ |
|
TC_HTB_NODE_MODIFY, |
|
|
|
/* Class qdisc */ |
|
TC_HTB_LEAF_QUERY_QUEUE, /* Query qid by classid. */ |
|
}; |
|
|
|
struct tc_htb_qopt_offload { |
|
struct netlink_ext_ack *extack; |
|
enum tc_htb_command command; |
|
u16 classid; |
|
u32 parent_classid; |
|
u16 qid; |
|
u16 moved_qid; |
|
u64 rate; |
|
u64 ceil; |
|
}; |
|
|
|
#define TC_HTB_CLASSID_ROOT U32_MAX |
|
|
|
enum tc_red_command { |
|
TC_RED_REPLACE, |
|
TC_RED_DESTROY, |
|
TC_RED_STATS, |
|
TC_RED_XSTATS, |
|
TC_RED_GRAFT, |
|
}; |
|
|
|
struct tc_red_qopt_offload_params { |
|
u32 min; |
|
u32 max; |
|
u32 probability; |
|
u32 limit; |
|
bool is_ecn; |
|
bool is_harddrop; |
|
bool is_nodrop; |
|
struct gnet_stats_queue *qstats; |
|
}; |
|
|
|
struct tc_red_qopt_offload { |
|
enum tc_red_command command; |
|
u32 handle; |
|
u32 parent; |
|
union { |
|
struct tc_red_qopt_offload_params set; |
|
struct tc_qopt_offload_stats stats; |
|
struct red_stats *xstats; |
|
u32 child_handle; |
|
}; |
|
}; |
|
|
|
enum tc_gred_command { |
|
TC_GRED_REPLACE, |
|
TC_GRED_DESTROY, |
|
TC_GRED_STATS, |
|
}; |
|
|
|
struct tc_gred_vq_qopt_offload_params { |
|
bool present; |
|
u32 limit; |
|
u32 prio; |
|
u32 min; |
|
u32 max; |
|
bool is_ecn; |
|
bool is_harddrop; |
|
u32 probability; |
|
/* Only need backlog, see struct tc_prio_qopt_offload_params */ |
|
u32 *backlog; |
|
}; |
|
|
|
struct tc_gred_qopt_offload_params { |
|
bool grio_on; |
|
bool wred_on; |
|
unsigned int dp_cnt; |
|
unsigned int dp_def; |
|
struct gnet_stats_queue *qstats; |
|
struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; |
|
}; |
|
|
|
struct tc_gred_qopt_offload_stats { |
|
struct gnet_stats_basic_packed bstats[MAX_DPs]; |
|
struct gnet_stats_queue qstats[MAX_DPs]; |
|
struct red_stats *xstats[MAX_DPs]; |
|
}; |
|
|
|
struct tc_gred_qopt_offload { |
|
enum tc_gred_command command; |
|
u32 handle; |
|
u32 parent; |
|
union { |
|
struct tc_gred_qopt_offload_params set; |
|
struct tc_gred_qopt_offload_stats stats; |
|
}; |
|
}; |
|
|
|
enum tc_prio_command { |
|
TC_PRIO_REPLACE, |
|
TC_PRIO_DESTROY, |
|
TC_PRIO_STATS, |
|
TC_PRIO_GRAFT, |
|
}; |
|
|
|
struct tc_prio_qopt_offload_params { |
|
int bands; |
|
u8 priomap[TC_PRIO_MAX + 1]; |
|
/* At the point of un-offloading the Qdisc, the reported backlog and |
|
* qlen need to be reduced by the portion that is in HW. |
|
*/ |
|
struct gnet_stats_queue *qstats; |
|
}; |
|
|
|
struct tc_prio_qopt_offload_graft_params { |
|
u8 band; |
|
u32 child_handle; |
|
}; |
|
|
|
struct tc_prio_qopt_offload { |
|
enum tc_prio_command command; |
|
u32 handle; |
|
u32 parent; |
|
union { |
|
struct tc_prio_qopt_offload_params replace_params; |
|
struct tc_qopt_offload_stats stats; |
|
struct tc_prio_qopt_offload_graft_params graft_params; |
|
}; |
|
}; |
|
|
|
enum tc_root_command { |
|
TC_ROOT_GRAFT, |
|
}; |
|
|
|
struct tc_root_qopt_offload { |
|
enum tc_root_command command; |
|
u32 handle; |
|
bool ingress; |
|
}; |
|
|
|
enum tc_ets_command { |
|
TC_ETS_REPLACE, |
|
TC_ETS_DESTROY, |
|
TC_ETS_STATS, |
|
TC_ETS_GRAFT, |
|
}; |
|
|
|
struct tc_ets_qopt_offload_replace_params { |
|
unsigned int bands; |
|
u8 priomap[TC_PRIO_MAX + 1]; |
|
unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */ |
|
unsigned int weights[TCQ_ETS_MAX_BANDS]; |
|
struct gnet_stats_queue *qstats; |
|
}; |
|
|
|
struct tc_ets_qopt_offload_graft_params { |
|
u8 band; |
|
u32 child_handle; |
|
}; |
|
|
|
struct tc_ets_qopt_offload { |
|
enum tc_ets_command command; |
|
u32 handle; |
|
u32 parent; |
|
union { |
|
struct tc_ets_qopt_offload_replace_params replace_params; |
|
struct tc_qopt_offload_stats stats; |
|
struct tc_ets_qopt_offload_graft_params graft_params; |
|
}; |
|
}; |
|
|
|
enum tc_tbf_command { |
|
TC_TBF_REPLACE, |
|
TC_TBF_DESTROY, |
|
TC_TBF_STATS, |
|
}; |
|
|
|
struct tc_tbf_qopt_offload_replace_params { |
|
struct psched_ratecfg rate; |
|
u32 max_size; |
|
struct gnet_stats_queue *qstats; |
|
}; |
|
|
|
struct tc_tbf_qopt_offload { |
|
enum tc_tbf_command command; |
|
u32 handle; |
|
u32 parent; |
|
union { |
|
struct tc_tbf_qopt_offload_replace_params replace_params; |
|
struct tc_qopt_offload_stats stats; |
|
}; |
|
}; |
|
|
|
enum tc_fifo_command { |
|
TC_FIFO_REPLACE, |
|
TC_FIFO_DESTROY, |
|
TC_FIFO_STATS, |
|
}; |
|
|
|
struct tc_fifo_qopt_offload { |
|
enum tc_fifo_command command; |
|
u32 handle; |
|
u32 parent; |
|
union { |
|
struct tc_qopt_offload_stats stats; |
|
}; |
|
}; |
|
|
|
#endif
|
|
|