FM / net

/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/include/net/

/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/include/net

Name	Size	Mode	Actions
9p/	-	0755	rm
bluetooth/	-	0755	rm
caif/	-	0755	rm
iucv/	-	0755	rm
mana/	-	0755	rm
netfilter/	-	0755	rm
netns/	-	0755	rm
nfc/	-	0755	rm
phonet/	-	0755	rm
sctp/	-	0755	rm
tc_act/	-	0755	rm
6lowpan.h	10271	0644	edit dl rm
act_api.h	9559	0644	edit dl rm
addrconf.h	13826	0644	edit dl rm
af_ieee802154.h	1591	0644	edit dl rm
af_rxrpc.h	2976	0644	edit dl rm
af_unix.h	2272	0644	edit dl rm
af_vsock.h	7295	0644	edit dl rm
ah.h	382	0644	edit dl rm
arp.h	2052	0644	edit dl rm
atmclip.h	1515	0644	edit dl rm
ax25.h	14999	0644	edit dl rm
ax88796.h	1488	0644	edit dl rm
bareudp.h	333	0644	edit dl rm
bonding.h	20225	0644	edit dl rm
bond_3ad.h	9629	0644	edit dl rm
bond_alb.h	6251	0644	edit dl rm
bond_options.h	3916	0644	edit dl rm
bpf_sk_storage.h	1802	0644	edit dl rm
busy_poll.h	4973	0644	edit dl rm
calipso.h	2199	0644	edit dl rm
cfg80211-wext.h	1900	0644	edit dl rm
cfg80211.h	325844	0644	edit dl rm
cfg802154.h	11175	0644	edit dl rm
checksum.h	4850	0644	edit dl rm
cipso_ipv4.h	8399	0644	edit dl rm
cls_cgroup.h	2301	0644	edit dl rm
codel.h	6000	0644	edit dl rm
codel_impl.h	8500	0644	edit dl rm
codel_qdisc.h	3001	0644	edit dl rm
compat.h	1711	0644	edit dl rm
datalink.h	619	0644	edit dl rm
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failover.h	1178	0644	edit dl rm
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firewire.h	636	0644	edit dl rm
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gre.h	3377	0644	edit dl rm
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gtp.h	633	0644	edit dl rm
gue.h	3311	0644	edit dl rm
hwbm.h	937	0644	edit dl rm
icmp.h	1765	0644	edit dl rm
ieee80211_radiotap.h	23017	0644	edit dl rm
ieee802154_netdev.h	9358	0644	edit dl rm
ife.h	1057	0644	edit dl rm
if_inet6.h	6591	0644	edit dl rm
ila.h	498	0644	edit dl rm
inet6_connection_sock.h	976	0644	edit dl rm
inet6_hashtables.h	3746	0644	edit dl rm
inetpeer.h	3372	0644	edit dl rm
inet_common.h	2614	0644	edit dl rm
inet_connection_sock.h	12070	0644	edit dl rm
inet_ecn.h	8071	0644	edit dl rm
inet_frag.h	4816	0644	edit dl rm
inet_hashtables.h	13847	0644	edit dl rm
inet_sock.h	9828	0644	edit dl rm
inet_timewait_sock.h	3926	0644	edit dl rm
ip.h	21354	0644	edit dl rm
ip6_checksum.h	2981	0644	edit dl rm
ip6_fib.h	13766	0644	edit dl rm
ip6_route.h	9228	0644	edit dl rm
ip6_tunnel.h	5096	0644	edit dl rm
ipcomp.h	659	0644	edit dl rm
ipconfig.h	811	0644	edit dl rm
ipv6.h	32741	0644	edit dl rm
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ipv6_stubs.h	2671	0644	edit dl rm
ipx.h	4386	0644	edit dl rm
ip_fib.h	14290	0644	edit dl rm
ip_tunnels.h	14697	0644	edit dl rm
ip_vs.h	49407	0644	edit dl rm
iw_handler.h	21413	0644	edit dl rm
kcm.h	5083	0644	edit dl rm
l3mdev.h	6743	0644	edit dl rm
lag.h	409	0644	edit dl rm
lapb.h	4869	0644	edit dl rm
lib80211.h	4017	0644	edit dl rm
llc.h	4464	0644	edit dl rm
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lwtunnel.h	6563	0644	edit dl rm
mac80211.h	294437	0644	edit dl rm
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mld.h	2870	0644	edit dl rm
mpls.h	1340	0644	edit dl rm
mpls_iptunnel.h	827	0644	edit dl rm
mptcp.h	6242	0644	edit dl rm
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neighbour.h	16289	0644	edit dl rm
netdev_queues.h	5609	0644	edit dl rm
netevent.h	1044	0644	edit dl rm
netlabel.h	21236	0644	edit dl rm
netlink.h	63253	0644	edit dl rm
netprio_cgroup.h	1260	0644	edit dl rm
netrom.h	7896	0644	edit dl rm
net_failover.h	1023	0644	edit dl rm
net_namespace.h	14177	0644	edit dl rm
net_ratelimit.h	220	0644	edit dl rm
nexthop.h	865	0644	edit dl rm
nl802154.h	12385	0644	edit dl rm
nsh.h	12602	0644	edit dl rm
p8022.h	447	0644	edit dl rm
page_pool.h	6985	0644	edit dl rm
pie.h	3684	0644	edit dl rm
ping.h	3197	0644	edit dl rm
pkt_cls.h	26178	0644	edit dl rm
pkt_sched.h	6543	0644	edit dl rm
pptp.h	557	0644	edit dl rm
protocol.h	4320	0644	edit dl rm
psample.h	1083	0644	edit dl rm
psnap.h	351	0644	edit dl rm
raw.h	2161	0644	edit dl rm
rawv6.h	856	0644	edit dl rm
red.h	11600	0644	edit dl rm
regulatory.h	10961	0644	edit dl rm
request_sock.h	6871	0644	edit dl rm
rose.h	7802	0644	edit dl rm
route.h	11390	0644	edit dl rm
rsi_91x.h	1710	0644	edit dl rm
rtnetlink.h	7317	0644	edit dl rm
sch_generic.h	33841	0644	edit dl rm
scm.h	3671	0644	edit dl rm
secure_seq.h	855	0644	edit dl rm
seg6.h	1874	0644	edit dl rm
seg6_hmac.h	1699	0644	edit dl rm
seg6_local.h	870	0644	edit dl rm
slhc_vj.h	6831	0644	edit dl rm
smc.h	2155	0644	edit dl rm
snmp.h	5482	0644	edit dl rm
sock.h	79182	0644	edit dl rm
sock_reuseport.h	1565	0644	edit dl rm
Space.h	1094	0644	edit dl rm
stp.h	383	0644	edit dl rm
strparser.h	4340	0644	edit dl rm
switchdev.h	17812	0644	edit dl rm
tcp.h	73206	0644	edit dl rm
tcp_states.h	1540	0644	edit dl rm
tc_wrapper.h	7033	0644	edit dl rm
timewait_sock.h	1136	0644	edit dl rm
tipc.h	2405	0644	edit dl rm
tls.h	21363	0644	edit dl rm
tls_toe.h	3006	0644	edit dl rm
transp_v6.h	1996	0644	edit dl rm
tso.h	515	0644	edit dl rm
tun_proto.h	988	0644	edit dl rm
udp.h	16481	0644	edit dl rm
udplite.h	3762	0644	edit dl rm
udp_tunnel.h	13376	0644	edit dl rm
vsock_addr.h	662	0644	edit dl rm
vxlan.h	13541	0644	edit dl rm
wext.h	1510	0644	edit dl rm
wimax.h	20445	0644	edit dl rm
x25.h	9658	0644	edit dl rm
x25device.h	387	0644	edit dl rm
xdp.h	9436	0644	edit dl rm
xdp_priv.h	446	0644	edit dl rm
xdp_sock.h	2094	0644	edit dl rm
xdp_sock_drv.h	6423	0644	edit dl rm
xfrm.h	59628	0644	edit dl rm
xsk_buff_pool.h	6550	0644	edit dl rm

Edit: /usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/include/net/pkt_cls.h (26178B)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_PKT_CLS_H
#define __NET_PKT_CLS_H

#include <linux/pkt_cls.h>
#include <linux/workqueue.h>
#include <net/sch_generic.h>
#include <net/act_api.h>
#include <net/net_namespace.h>

/* TC action not accessible from user space */
#define TC_ACT_CONSUMED		(TC_ACT_VALUE_MAX + 1)

/* Basic packet classifier frontend definitions. */

struct tcf_walker {
	int	stop;
	int	skip;
	int	count;
	bool	nonempty;
	unsigned long cookie;
	int	(*fn)(struct tcf_proto *, void *node, struct tcf_walker *);
};

int register_tcf_proto_ops(struct tcf_proto_ops *ops);
void unregister_tcf_proto_ops(struct tcf_proto_ops *ops);

struct tcf_block_ext_info {
	enum flow_block_binder_type binder_type;
	tcf_chain_head_change_t *chain_head_change;
	void *chain_head_change_priv;
	u32 block_index;
};

struct tcf_qevent {
	struct tcf_block	*block;
	struct tcf_block_ext_info info;
	struct tcf_proto __rcu *filter_chain;
};

struct tcf_block_cb;
bool tcf_queue_work(struct rcu_work *rwork, work_func_t func);

#ifdef CONFIG_NET_CLS
struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block,
				       u32 chain_index);
void tcf_chain_put_by_act(struct tcf_chain *chain);
struct tcf_chain *tcf_get_next_chain(struct tcf_block *block,
				     struct tcf_chain *chain);
struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain,
				     struct tcf_proto *tp);
void tcf_block_netif_keep_dst(struct tcf_block *block);
int tcf_block_get(struct tcf_block **p_block,
		  struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
		  struct netlink_ext_ack *extack);
int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
		      struct tcf_block_ext_info *ei,
		      struct netlink_ext_ack *extack);
void tcf_block_put(struct tcf_block *block);
void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
		       struct tcf_block_ext_info *ei);
int tcf_exts_init_ex(struct tcf_exts *exts, struct net *net, int action,
		     int police, struct tcf_proto *tp, u32 handle, bool used_action_miss);

static inline bool tcf_block_shared(struct tcf_block *block)
{
	return block->index;
}

static inline bool tcf_block_non_null_shared(struct tcf_block *block)
{
	return block && block->index;
}

static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
{
	WARN_ON(tcf_block_shared(block));
	return block->q;
}

int tcf_classify(struct sk_buff *skb,
		 const struct tcf_block *block,
		 const struct tcf_proto *tp, struct tcf_result *res,
		 bool compat_mode);

static inline bool tc_cls_stats_dump(struct tcf_proto *tp,
				     struct tcf_walker *arg,
				     void *filter)
{
	if (arg->count >= arg->skip && arg->fn(tp, filter, arg) < 0) {
		arg->stop = 1;
		return false;
	}

arg->count++;
	return true;
}

#else
static inline bool tcf_block_shared(struct tcf_block *block)
{
	return false;
}

static inline bool tcf_block_non_null_shared(struct tcf_block *block)
{
	return false;
}

static inline
int tcf_block_get(struct tcf_block **p_block,
		  struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
		  struct netlink_ext_ack *extack)
{
	return 0;
}

static inline
int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
		      struct tcf_block_ext_info *ei,
		      struct netlink_ext_ack *extack)
{
	return 0;
}

static inline void tcf_block_put(struct tcf_block *block)
{
}

static inline
void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
		       struct tcf_block_ext_info *ei)
{
}

static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
{
	return NULL;
}

static inline
int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb,
			       void *cb_priv)
{
	return 0;
}

static inline
void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb,
				  void *cb_priv)
{
}

static inline int tcf_classify(struct sk_buff *skb,
			       const struct tcf_block *block,
			       const struct tcf_proto *tp,
			       struct tcf_result *res, bool compat_mode)
{
	return TC_ACT_UNSPEC;
}

#endif

static inline unsigned long
__cls_set_class(unsigned long *clp, unsigned long cl)
{
	return xchg(clp, cl);
}

static inline void
__tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base)
{
	unsigned long cl;

cl = q->ops->cl_ops->bind_tcf(q, base, r->classid);
	cl = __cls_set_class(&r->class, cl);
	if (cl)
		q->ops->cl_ops->unbind_tcf(q, cl);
}

static inline void
tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base)
{
	struct Qdisc *q = tp->chain->block->q;

/* Check q as it is not set for shared blocks. In that case,
	 * setting class is not supported.
	 */
	if (!q)
		return;
	sch_tree_lock(q);
	__tcf_bind_filter(q, r, base);
	sch_tree_unlock(q);
}

static inline void
__tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r)
{
	unsigned long cl;

if ((cl = __cls_set_class(&r->class, 0)) != 0)
		q->ops->cl_ops->unbind_tcf(q, cl);
}

static inline void
tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r)
{
	struct Qdisc *q = tp->chain->block->q;

if (!q)
		return;
	__tcf_unbind_filter(q, r);
}

static inline void tc_cls_bind_class(u32 classid, unsigned long cl,
				     void *q, struct tcf_result *res,
				     unsigned long base)
{
	if (res->classid == classid) {
		if (cl)
			__tcf_bind_filter(q, res, base);
		else
			__tcf_unbind_filter(q, res);
	}
}

struct tcf_exts {
#ifdef CONFIG_NET_CLS_ACT
	__u32	type; /* for backward compat(TCA_OLD_COMPAT) */
	int nr_actions;
	struct tc_action **actions;
	struct net *net;
	struct tcf_exts_miss_cookie_node *miss_cookie_node;
#endif
	/* Map to export classifier specific extension TLV types to the
	 * generic extensions API. Unsupported extensions must be set to 0.
	 */
	int action;
	int police;
};

static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net,
				int action, int police)
{
#ifdef CONFIG_NET_CLS
	return tcf_exts_init_ex(exts, net, action, police, NULL, 0, false);
#else
	return -EOPNOTSUPP;
#endif
}

/* Return false if the netns is being destroyed in cleanup_net(). Callers
 * need to do cleanup synchronously in this case, otherwise may race with
 * tc_action_net_exit(). Return true for other cases.
 */
static inline bool tcf_exts_get_net(struct tcf_exts *exts)
{
#ifdef CONFIG_NET_CLS_ACT
	exts->net = maybe_get_net(exts->net);
	return exts->net != NULL;
#else
	return true;
#endif
}

static inline void tcf_exts_put_net(struct tcf_exts *exts)
{
#ifdef CONFIG_NET_CLS_ACT
	if (exts->net)
		put_net(exts->net);
#endif
}

#ifdef CONFIG_NET_CLS_ACT
#define tcf_exts_for_each_action(i, a, exts) \
	for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++)
#else
#define tcf_exts_for_each_action(i, a, exts) \
	for (; 0; (void)(i), (void)(a), (void)(exts))
#endif

#define tcf_act_for_each_action(i, a, actions) \
	for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = actions[i]); i++)

static inline bool tc_act_in_hw(struct tc_action *act)
{
	return !!act->in_hw_count;
}

static inline void
tcf_exts_hw_stats_update(const struct tcf_exts *exts,
			 struct flow_stats *stats,
			 bool use_act_stats)
{
#ifdef CONFIG_NET_CLS_ACT
	int i;

for (i = 0; i < exts->nr_actions; i++) {
		struct tc_action *a = exts->actions[i];

if (use_act_stats || tc_act_in_hw(a)) {
			if (!tcf_action_update_hw_stats(a))
				continue;
		}

preempt_disable();
		tcf_action_stats_update(a, stats->bytes, stats->pkts, stats->drops,
					stats->lastused, true);
		preempt_enable();

a->used_hw_stats = stats->used_hw_stats;
		a->used_hw_stats_valid = stats->used_hw_stats_valid;
	}
#endif
}

/**
 * tcf_exts_has_actions - check if at least one action is present
 * @exts: tc filter extensions handle
 *
 * Returns true if at least one action is present.
 */
static inline bool tcf_exts_has_actions(struct tcf_exts *exts)
{
#ifdef CONFIG_NET_CLS_ACT
	return exts->nr_actions;
#else
	return false;
#endif
}

/**
 * tcf_exts_exec - execute tc filter extensions
 * @skb: socket buffer
 * @exts: tc filter extensions handle
 * @res: desired result
 *
 * Executes all configured extensions. Returns TC_ACT_OK on a normal execution,
 * a negative number if the filter must be considered unmatched or
 * a positive action code (TC_ACT_*) which must be returned to the
 * underlying layer.
 */
static inline int
tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
	      struct tcf_result *res)
{
#ifdef CONFIG_NET_CLS_ACT
	return tcf_action_exec(skb, exts->actions, exts->nr_actions, res);
#endif
	return TC_ACT_OK;
}

static inline int
tcf_exts_exec_ex(struct sk_buff *skb, struct tcf_exts *exts, int act_index,
		 struct tcf_result *res)
{
#ifdef CONFIG_NET_CLS_ACT
	return tcf_action_exec(skb, exts->actions + act_index,
			       exts->nr_actions - act_index, res);
#else
	return TC_ACT_OK;
#endif
}

int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
		      struct nlattr **tb, struct nlattr *rate_tlv,
		      struct tcf_exts *exts, u32 flags,
		      struct netlink_ext_ack *extack);
int tcf_exts_validate_ex(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
			 struct nlattr *rate_tlv, struct tcf_exts *exts,
			 u32 flags, u32 fl_flags, struct netlink_ext_ack *extack);
void tcf_exts_destroy(struct tcf_exts *exts);
void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src);
int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts);
int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts);
int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts);

/**
 * struct tcf_pkt_info - packet information
 *
 * @ptr: start of the pkt data
 * @nexthdr: offset of the next header
 */
struct tcf_pkt_info {
	unsigned char *		ptr;
	int			nexthdr;
};

#ifdef CONFIG_NET_EMATCH

struct tcf_ematch_ops;

/**
 * struct tcf_ematch - extended match (ematch)
 * 
 * @matchid: identifier to allow userspace to reidentify a match
 * @flags: flags specifying attributes and the relation to other matches
 * @ops: the operations lookup table of the corresponding ematch module
 * @datalen: length of the ematch specific configuration data
 * @data: ematch specific data
 * @net: the network namespace
 */
struct tcf_ematch {
	struct tcf_ematch_ops * ops;
	unsigned long		data;
	unsigned int		datalen;
	u16			matchid;
	u16			flags;
	struct net		*net;
};

static inline int tcf_em_is_container(struct tcf_ematch *em)
{
	return !em->ops;
}

static inline int tcf_em_is_simple(struct tcf_ematch *em)
{
	return em->flags & TCF_EM_SIMPLE;
}

static inline int tcf_em_is_inverted(struct tcf_ematch *em)
{
	return em->flags & TCF_EM_INVERT;
}

static inline int tcf_em_last_match(struct tcf_ematch *em)
{
	return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END;
}

static inline int tcf_em_early_end(struct tcf_ematch *em, int result)
{
	if (tcf_em_last_match(em))
		return 1;

if (result == 0 && em->flags & TCF_EM_REL_AND)
		return 1;

if (result != 0 && em->flags & TCF_EM_REL_OR)
		return 1;

return 0;
}
	
/**
 * struct tcf_ematch_tree - ematch tree handle
 *
 * @hdr: ematch tree header supplied by userspace
 * @matches: array of ematches
 */
struct tcf_ematch_tree {
	struct tcf_ematch_tree_hdr hdr;
	struct tcf_ematch *	matches;
	
};

/**
 * struct tcf_ematch_ops - ematch module operations
 * 
 * @kind: identifier (kind) of this ematch module
 * @datalen: length of expected configuration data (optional)
 * @change: called during validation (optional)
 * @match: called during ematch tree evaluation, must return 1/0
 * @destroy: called during destroyage (optional)
 * @dump: called during dumping process (optional)
 * @owner: owner, must be set to THIS_MODULE
 * @link: link to previous/next ematch module (internal use)
 */
struct tcf_ematch_ops {
	int			kind;
	int			datalen;
	int			(*change)(struct net *net, void *,
					  int, struct tcf_ematch *);
	int			(*match)(struct sk_buff *, struct tcf_ematch *,
					 struct tcf_pkt_info *);
	void			(*destroy)(struct tcf_ematch *);
	int			(*dump)(struct sk_buff *, struct tcf_ematch *);
	struct module		*owner;
	struct list_head	link;
};

int tcf_em_register(struct tcf_ematch_ops *);
void tcf_em_unregister(struct tcf_ematch_ops *);
int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *,
			 struct tcf_ematch_tree *);
void tcf_em_tree_destroy(struct tcf_ematch_tree *);
int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int);
int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *,
			struct tcf_pkt_info *);

/**
 * tcf_em_tree_match - evaulate an ematch tree
 *
 * @skb: socket buffer of the packet in question
 * @tree: ematch tree to be used for evaluation
 * @info: packet information examined by classifier
 *
 * This function matches @skb against the ematch tree in @tree by going
 * through all ematches respecting their logic relations returning
 * as soon as the result is obvious.
 *
 * Returns 1 if the ematch tree as-one matches, no ematches are configured
 * or ematch is not enabled in the kernel, otherwise 0 is returned.
 */
static inline int tcf_em_tree_match(struct sk_buff *skb,
				    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;
};

#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

cmd: