1075 lines
26 KiB
C
1075 lines
26 KiB
C
/* 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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#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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/* TC action not accessible from user space */
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#define TC_ACT_CONSUMED (TC_ACT_VALUE_MAX + 1)
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/* Basic packet classifier frontend definitions. */
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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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int register_tcf_proto_ops(struct tcf_proto_ops *ops);
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void 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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struct tcf_block_cb;
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bool tcf_queue_work(struct rcu_work *rwork, work_func_t func);
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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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int tcf_exts_init_ex(struct tcf_exts *exts, struct net *net, int action,
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int police, struct tcf_proto *tp, u32 handle, bool used_action_miss);
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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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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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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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int tcf_classify(struct sk_buff *skb,
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const struct tcf_block *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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static inline bool tc_cls_stats_dump(struct tcf_proto *tp,
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struct tcf_walker *arg,
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void *filter)
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{
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if (arg->count >= arg->skip && arg->fn(tp, filter, arg) < 0) {
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arg->stop = 1;
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return false;
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}
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arg->count++;
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return true;
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}
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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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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,
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const struct tcf_block *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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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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/* 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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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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if (!q)
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return;
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__tcf_unbind_filter(q, r);
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}
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static inline void tc_cls_bind_class(u32 classid, unsigned long cl,
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void *q, struct tcf_result *res,
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unsigned long base)
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{
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if (res->classid == classid) {
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if (cl)
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__tcf_bind_filter(q, res, base);
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else
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__tcf_unbind_filter(q, res);
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}
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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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netns_tracker ns_tracker;
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struct tcf_exts_miss_cookie_node *miss_cookie_node;
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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
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return tcf_exts_init_ex(exts, net, action, police, NULL, 0, false);
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#else
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return -EOPNOTSUPP;
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#endif
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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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if (exts->net)
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netns_tracker_alloc(exts->net, &exts->ns_tracker, GFP_KERNEL);
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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_track(exts->net, &exts->ns_tracker);
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#endif
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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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#define tcf_act_for_each_action(i, a, actions) \
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for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = actions[i]); i++)
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static inline bool tc_act_in_hw(struct tc_action *act)
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{
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return !!act->in_hw_count;
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}
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static inline void
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tcf_exts_hw_stats_update(const struct tcf_exts *exts,
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struct flow_stats *stats,
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bool use_act_stats)
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{
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#ifdef CONFIG_NET_CLS_ACT
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int i;
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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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if (use_act_stats || tc_act_in_hw(a)) {
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if (!tcf_action_update_hw_stats(a))
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continue;
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}
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preempt_disable();
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tcf_action_stats_update(a, stats->bytes, stats->pkts, stats->drops,
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stats->lastused, true);
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preempt_enable();
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a->used_hw_stats = stats->used_hw_stats;
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a->used_hw_stats_valid = stats->used_hw_stats_valid;
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}
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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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static inline int
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tcf_exts_exec_ex(struct sk_buff *skb, struct tcf_exts *exts, int act_index,
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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 + act_index,
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exts->nr_actions - act_index, res);
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#else
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return TC_ACT_OK;
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#endif
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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, u32 flags,
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struct netlink_ext_ack *extack);
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int tcf_exts_validate_ex(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
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struct nlattr *rate_tlv, struct tcf_exts *exts,
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u32 flags, u32 fl_flags, 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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* @ptr: start of the pkt data
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* @nexthdr: offset of the next header
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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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* @net: the network namespace
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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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* 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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* 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,
|
|
struct tcf_pkt_info *info)
|
|
{
|
|
if (tree->hdr.nmatches)
|
|
return __tcf_em_tree_match(skb, tree, info);
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
#define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind))
|
|
|
|
#else /* CONFIG_NET_EMATCH */
|
|
|
|
struct tcf_ematch_tree {
|
|
};
|
|
|
|
#define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0)
|
|
#define tcf_em_tree_destroy(t) do { (void)(t); } while(0)
|
|
#define tcf_em_tree_dump(skb, t, tlv) (0)
|
|
#define tcf_em_tree_match(skb, t, info) ((void)(info), 1)
|
|
|
|
#endif /* CONFIG_NET_EMATCH */
|
|
|
|
static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer)
|
|
{
|
|
switch (layer) {
|
|
case TCF_LAYER_LINK:
|
|
return skb_mac_header(skb);
|
|
case TCF_LAYER_NETWORK:
|
|
return skb_network_header(skb);
|
|
case TCF_LAYER_TRANSPORT:
|
|
return skb_transport_header(skb);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static inline int tcf_valid_offset(const struct sk_buff *skb,
|
|
const unsigned char *ptr, const int len)
|
|
{
|
|
return likely((ptr + len) <= skb_tail_pointer(skb) &&
|
|
ptr >= skb->head &&
|
|
(ptr <= (ptr + len)));
|
|
}
|
|
|
|
static inline int
|
|
tcf_change_indev(struct net *net, struct nlattr *indev_tlv,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
char indev[IFNAMSIZ];
|
|
struct net_device *dev;
|
|
|
|
if (nla_strscpy(indev, indev_tlv, IFNAMSIZ) < 0) {
|
|
NL_SET_ERR_MSG_ATTR(extack, indev_tlv,
|
|
"Interface name too long");
|
|
return -EINVAL;
|
|
}
|
|
dev = __dev_get_by_name(net, indev);
|
|
if (!dev) {
|
|
NL_SET_ERR_MSG_ATTR(extack, indev_tlv,
|
|
"Network device not found");
|
|
return -ENODEV;
|
|
}
|
|
return dev->ifindex;
|
|
}
|
|
|
|
static inline bool
|
|
tcf_match_indev(struct sk_buff *skb, int ifindex)
|
|
{
|
|
if (!ifindex)
|
|
return true;
|
|
if (!skb->skb_iif)
|
|
return false;
|
|
return ifindex == skb->skb_iif;
|
|
}
|
|
|
|
int tc_setup_offload_action(struct flow_action *flow_action,
|
|
const struct tcf_exts *exts,
|
|
struct netlink_ext_ack *extack);
|
|
void tc_cleanup_offload_action(struct flow_action *flow_action);
|
|
int tc_setup_action(struct flow_action *flow_action,
|
|
struct tc_action *actions[],
|
|
u32 miss_cookie_base,
|
|
struct netlink_ext_ack *extack);
|
|
|
|
int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type,
|
|
void *type_data, bool err_stop, bool rtnl_held);
|
|
int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp,
|
|
enum tc_setup_type type, void *type_data, bool err_stop,
|
|
u32 *flags, unsigned int *in_hw_count, bool rtnl_held);
|
|
int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp,
|
|
enum tc_setup_type type, void *type_data, bool err_stop,
|
|
u32 *old_flags, unsigned int *old_in_hw_count,
|
|
u32 *new_flags, unsigned int *new_in_hw_count,
|
|
bool rtnl_held);
|
|
int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp,
|
|
enum tc_setup_type type, void *type_data, bool err_stop,
|
|
u32 *flags, unsigned int *in_hw_count, bool rtnl_held);
|
|
int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp,
|
|
bool add, flow_setup_cb_t *cb,
|
|
enum tc_setup_type type, void *type_data,
|
|
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;
|
|
bool use_act_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;
|
|
};
|
|
|
|
/* 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_sync *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;
|
|
u32 parent_classid;
|
|
u16 classid;
|
|
u16 qid;
|
|
u64 rate;
|
|
u64 ceil;
|
|
u8 prio;
|
|
};
|
|
|
|
#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_sync 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,
|
|
TC_TBF_GRAFT,
|
|
};
|
|
|
|
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;
|
|
u32 child_handle;
|
|
};
|
|
};
|
|
|
|
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;
|
|
};
|
|
};
|
|
|
|
#ifdef CONFIG_NET_CLS_ACT
|
|
DECLARE_STATIC_KEY_FALSE(tc_skb_ext_tc);
|
|
void tc_skb_ext_tc_enable(void);
|
|
void tc_skb_ext_tc_disable(void);
|
|
#define tc_skb_ext_tc_enabled() static_branch_unlikely(&tc_skb_ext_tc)
|
|
#else /* CONFIG_NET_CLS_ACT */
|
|
static inline void tc_skb_ext_tc_enable(void) { }
|
|
static inline void tc_skb_ext_tc_disable(void) { }
|
|
#define tc_skb_ext_tc_enabled() false
|
|
#endif
|
|
|
|
#endif
|