FM / net

/usr/src/linux-headers-5.15.0-190/include/net/

/usr/src/linux-headers-5.15.0-190/include/net

Name	Size	Mode	Actions
9p/	-	0755	rm
bluetooth/	-	0755	rm
caif/	-	0755	rm
iucv/	-	0755	rm
netfilter/	-	0755	rm
netns/	-	0755	rm
nfc/	-	0755	rm
phonet/	-	0755	rm
sctp/	-	0755	rm
tc_act/	-	0755	rm
6lowpan.h	10270	0644	edit dl rm
act_api.h	8728	0644	edit dl rm
addrconf.h	14594	0644	edit dl rm
af_ieee802154.h	1220	0644	edit dl rm
af_rxrpc.h	2798	0644	edit dl rm
af_unix.h	3375	0644	edit dl rm
af_vsock.h	7592	0644	edit dl rm
ah.h	382	0644	edit dl rm
arp.h	2141	0644	edit dl rm
atmclip.h	1515	0644	edit dl rm
ax25.h	15443	0644	edit dl rm
ax88796.h	1440	0644	edit dl rm
bareudp.h	572	0644	edit dl rm
bonding.h	20263	0644	edit dl rm
bond_3ad.h	9706	0644	edit dl rm
bond_alb.h	6251	0644	edit dl rm
bond_options.h	3876	0644	edit dl rm
bpf_sk_storage.h	1780	0644	edit dl rm
busy_poll.h	3959	0644	edit dl rm
calipso.h	1590	0644	edit dl rm
cfg80211-wext.h	1854	0644	edit dl rm
cfg80211.h	301317	0644	edit dl rm
cfg802154.h	10779	0644	edit dl rm
checksum.h	4869	0644	edit dl rm
cipso_ipv4.h	7548	0644	edit dl rm
cls_cgroup.h	2086	0644	edit dl rm
codel.h	5782	0644	edit dl rm
codel_impl.h	8167	0644	edit dl rm
codel_qdisc.h	2973	0644	edit dl rm
compat.h	2586	0644	edit dl rm
datalink.h	619	0644	edit dl rm
dcbevent.h	742	0644	edit dl rm
dcbnl.h	4317	0644	edit dl rm
devlink.h	63593	0644	edit dl rm
dsa.h	36231	0644	edit dl rm
dsfield.h	1147	0644	edit dl rm
dst.h	15153	0644	edit dl rm
dst_cache.h	3031	0644	edit dl rm
dst_metadata.h	5521	0644	edit dl rm
dst_ops.h	2125	0644	edit dl rm
erspan.h	9180	0644	edit dl rm
esp.h	1190	0644	edit dl rm
espintcp.h	966	0644	edit dl rm
ethoc.h	391	0644	edit dl rm
failover.h	1178	0644	edit dl rm
fib_notifier.h	1384	0644	edit dl rm
fib_rules.h	6450	0644	edit dl rm
firewire.h	636	0644	edit dl rm
flow.h	5119	0644	edit dl rm
flow_dissector.h	11033	0644	edit dl rm
flow_offload.h	15938	0644	edit dl rm
fou.h	549	0644	edit dl rm
fq.h	2528	0644	edit dl rm
fq_impl.h	8076	0644	edit dl rm
garp.h	2678	0644	edit dl rm
genetlink.h	13854	0644	edit dl rm
geneve.h	1898	0644	edit dl rm
gen_stats.h	2889	0644	edit dl rm
gre.h	3369	0644	edit dl rm
gro.h	783	0644	edit dl rm
gro_cells.h	443	0644	edit dl rm
gtp.h	633	0644	edit dl rm
gue.h	3313	0644	edit dl rm
hwbm.h	969	0644	edit dl rm
icmp.h	1918	0644	edit dl rm
ieee80211_radiotap.h	13518	0644	edit dl rm
ieee802154_netdev.h	10095	0644	edit dl rm
ife.h	1057	0644	edit dl rm
if_inet6.h	6692	0644	edit dl rm
ila.h	291	0644	edit dl rm
inet6_connection_sock.h	765	0644	edit dl rm
inet6_hashtables.h	4259	0644	edit dl rm
inetpeer.h	3372	0644	edit dl rm
inet_common.h	2614	0644	edit dl rm
inet_connection_sock.h	11608	0644	edit dl rm
inet_ecn.h	7625	0644	edit dl rm
inet_frag.h	5046	0644	edit dl rm
inet_hashtables.h	12532	0644	edit dl rm
inet_sock.h	9994	0644	edit dl rm
inet_timewait_sock.h	3735	0644	edit dl rm
ioam6.h	1248	0644	edit dl rm
ip.h	22759	0644	edit dl rm
ip6_checksum.h	2770	0644	edit dl rm
ip6_fib.h	16280	0644	edit dl rm
ip6_route.h	10230	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	35990	0644	edit dl rm
ipv6_frag.h	3361	0644	edit dl rm
ipv6_stubs.h	3482	0644	edit dl rm
ip_fib.h	16346	0644	edit dl rm
ip_tunnels.h	15949	0644	edit dl rm
ip_vs.h	50588	0644	edit dl rm
iw_handler.h	21413	0644	edit dl rm
kcm.h	4961	0644	edit dl rm
l3mdev.h	7202	0644	edit dl rm
lag.h	409	0644	edit dl rm
lapb.h	4938	0644	edit dl rm
lib80211.h	4017	0644	edit dl rm
llc.h	4514	0644	edit dl rm
llc_conn.h	4155	0644	edit dl rm
llc_c_ac.h	9537	0644	edit dl rm
llc_c_ev.h	10940	0644	edit dl rm
llc_c_st.h	1762	0644	edit dl rm
llc_if.h	2210	0644	edit dl rm
llc_pdu.h	14697	0644	edit dl rm
llc_sap.h	1108	0644	edit dl rm
llc_s_ac.h	1591	0644	edit dl rm
llc_s_ev.h	2255	0644	edit dl rm
llc_s_st.h	947	0644	edit dl rm
lwtunnel.h	6806	0644	edit dl rm
mac80211.h	274120	0644	edit dl rm
mac802154.h	15235	0644	edit dl rm
macsec.h	7084	0644	edit dl rm
mctp.h	6155	0644	edit dl rm
mctpdevice.h	841	0644	edit dl rm
mip6.h	1016	0644	edit dl rm
mld.h	2918	0644	edit dl rm
mpls.h	943	0644	edit dl rm
mpls_iptunnel.h	429	0644	edit dl rm
mptcp.h	6776	0644	edit dl rm
mrp.h	3119	0644	edit dl rm
ncsi.h	1964	0644	edit dl rm
ndisc.h	15150	0644	edit dl rm
neighbour.h	16099	0644	edit dl rm
netevent.h	1044	0644	edit dl rm
netlabel.h	20676	0644	edit dl rm
netlink.h	61892	0644	edit dl rm
netprio_cgroup.h	1047	0644	edit dl rm
netrom.h	7895	0644	edit dl rm
net_failover.h	1023	0644	edit dl rm
net_namespace.h	12795	0644	edit dl rm
net_ratelimit.h	220	0644	edit dl rm
nexthop.h	12565	0644	edit dl rm
nl802154.h	12384	0644	edit dl rm
nsh.h	12602	0644	edit dl rm
p8022.h	447	0644	edit dl rm
page_pool.h	8646	0644	edit dl rm
pie.h	3695	0644	edit dl rm
ping.h	2970	0644	edit dl rm
pkt_cls.h	24431	0644	edit dl rm
pkt_sched.h	6042	0644	edit dl rm
pptp.h	557	0644	edit dl rm
protocol.h	3900	0644	edit dl rm
psample.h	1083	0644	edit dl rm
psnap.h	351	0644	edit dl rm
raw.h	2136	0644	edit dl rm
rawv6.h	854	0644	edit dl rm
red.h	11600	0644	edit dl rm
regulatory.h	10901	0644	edit dl rm
request_sock.h	6660	0644	edit dl rm
rose.h	7802	0644	edit dl rm
route.h	11361	0644	edit dl rm
rpl.h	839	0644	edit dl rm
rsi_91x.h	1710	0644	edit dl rm
rtnetlink.h	7638	0644	edit dl rm
rtnh.h	859	0644	edit dl rm
sch_generic.h	34991	0644	edit dl rm
scm.h	3877	0644	edit dl rm
secure_seq.h	855	0644	edit dl rm
seg6.h	2237	0644	edit dl rm
seg6_hmac.h	1473	0644	edit dl rm
seg6_local.h	644	0644	edit dl rm
selftests.h	582	0644	edit dl rm
slhc_vj.h	6831	0644	edit dl rm
smc.h	2513	0644	edit dl rm
snmp.h	5268	0644	edit dl rm
sock.h	86351	0644	edit dl rm
sock_reuseport.h	1873	0644	edit dl rm
Space.h	737	0644	edit dl rm
stp.h	383	0644	edit dl rm
strparser.h	4250	0644	edit dl rm
switchdev.h	14614	0644	edit dl rm
tcp.h	75327	0644	edit dl rm
tcp_states.h	1225	0644	edit dl rm
timewait_sock.h	925	0644	edit dl rm
tipc.h	2405	0644	edit dl rm
tls.h	21465	0644	edit dl rm
tls_toe.h	3006	0644	edit dl rm
transp_v6.h	1996	0644	edit dl rm
tso.h	566	0644	edit dl rm
tun_proto.h	988	0644	edit dl rm
udp.h	17035	0644	edit dl rm
udplite.h	3762	0644	edit dl rm
udp_tunnel.h	12739	0644	edit dl rm
vsock_addr.h	662	0644	edit dl rm
vxlan.h	14424	0644	edit dl rm
wext.h	1510	0644	edit dl rm
x25.h	9718	0644	edit dl rm
x25device.h	387	0644	edit dl rm
xdp.h	8829	0644	edit dl rm
xdp_priv.h	446	0644	edit dl rm
xdp_sock.h	2094	0644	edit dl rm
xdp_sock_drv.h	5607	0644	edit dl rm
xfrm.h	56304	0644	edit dl rm
xsk_buff_pool.h	5138	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/include/net/pkt_cls.h (24431B)

/* 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);
int 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);

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);

#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);
}

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;
#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_ACT
	exts->type = 0;
	exts->nr_actions = 0;
	exts->net = net;
	exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
				GFP_KERNEL);
	if (!exts->actions)
		return -ENOMEM;
#endif
	exts->action = action;
	exts->police = police;
	return 0;
}

/* 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

static inline void
tcf_exts_stats_update(const struct tcf_exts *exts,
		      u64 bytes, u64 packets, u64 drops, u64 lastuse,
		      u8 used_hw_stats, bool used_hw_stats_valid)
{
#ifdef CONFIG_NET_CLS_ACT
	int i;

preempt_disable();

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

tcf_action_stats_update(a, bytes, packets, drops,
					lastuse, true);
		a->used_hw_stats = used_hw_stats;
		a->used_hw_stats_valid = used_hw_stats_valid;
	}

preempt_enable();
#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;
}

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);
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_flow_action(struct flow_action *flow_action,
			 const struct tcf_exts *exts);
void tc_cleanup_flow_action(struct flow_action *flow_action);

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;
	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;
	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_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

cmd: