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Name	Size	Permission
9p	[ DIR ]	drwxr-xr-x
bluetooth	[ DIR ]	drwxr-xr-x
caif	[ DIR ]	drwxr-xr-x
iucv	[ DIR ]	drwxr-xr-x
netfilter	[ DIR ]	drwxr-xr-x
netns	[ DIR ]	drwxr-xr-x
nfc	[ DIR ]	drwxr-xr-x
phonet	[ DIR ]	drwxr-xr-x
sctp	[ DIR ]	drwxr-xr-x
tc_act	[ DIR ]	drwxr-xr-x
6lowpan.h	10.03 KB	-rw-r--r--
Space.h	1.15 KB	-rw-r--r--
act_api.h	6.38 KB	-rw-r--r--
addrconf.h	12.63 KB	-rw-r--r--
af_ieee802154.h	1.55 KB	-rw-r--r--
af_rxrpc.h	2.79 KB	-rw-r--r--
af_unix.h	2.22 KB	-rw-r--r--
af_vsock.h	7.21 KB	-rw-r--r--
ah.h	382 B	-rw-r--r--
arp.h	2 KB	-rw-r--r--
atmclip.h	1.48 KB	-rw-r--r--
ax25.h	15.02 KB	-rw-r--r--
ax88796.h	998 B	-rw-r--r--
bond_3ad.h	9.79 KB	-rw-r--r--
bond_alb.h	6.6 KB	-rw-r--r--
bond_options.h	3.92 KB	-rw-r--r--
bonding.h	19.1 KB	-rw-r--r--
busy_poll.h	3.81 KB	-rw-r--r--
calipso.h	2.15 KB	-rw-r--r--
cfg80211-wext.h	1.95 KB	-rw-r--r--
cfg80211.h	221.24 KB	-rw-r--r--
cfg802154.h	10.89 KB	-rw-r--r--
checksum.h	4.76 KB	-rw-r--r--
cipso_ipv4.h	8.2 KB	-rw-r--r--
cls_cgroup.h	2.15 KB	-rw-r--r--
codel.h	5.65 KB	-rw-r--r--
codel_impl.h	7.98 KB	-rw-r--r--
codel_qdisc.h	2.9 KB	-rw-r--r--
compat.h	2.11 KB	-rw-r--r--
datalink.h	619 B	-rw-r--r--
dcbevent.h	1.26 KB	-rw-r--r--
dcbnl.h	4.2 KB	-rw-r--r--
devlink.h	13.25 KB	-rw-r--r--
dn.h	6.88 KB	-rw-r--r--
dn_dev.h	5.36 KB	-rw-r--r--
dn_fib.h	3.98 KB	-rw-r--r--
dn_neigh.h	968 B	-rw-r--r--
dn_nsp.h	5.83 KB	-rw-r--r--
dn_route.h	4.36 KB	-rw-r--r--
dsa.h	13.94 KB	-rw-r--r--
dsfield.h	1.11 KB	-rw-r--r--
dst.h	13.48 KB	-rw-r--r--
dst_cache.h	2.53 KB	-rw-r--r--
dst_metadata.h	5.39 KB	-rw-r--r--
dst_ops.h	2 KB	-rw-r--r--
erspan.h	2.11 KB	-rw-r--r--
esp.h	877 B	-rw-r--r--
ethoc.h	538 B	-rw-r--r--
fib_notifier.h	1.29 KB	-rw-r--r--
fib_rules.h	4.18 KB	-rw-r--r--
firewire.h	636 B	-rw-r--r--
flow.h	6.16 KB	-rw-r--r--
flow_dissector.h	7.55 KB	-rw-r--r--
fou.h	549 B	-rw-r--r--
fq.h	2.67 KB	-rw-r--r--
fq_impl.h	6.9 KB	-rw-r--r--
garp.h	2.62 KB	-rw-r--r--
gen_stats.h	2.34 KB	-rw-r--r--
genetlink.h	11.3 KB	-rw-r--r--
geneve.h	1.67 KB	-rw-r--r--
gre.h	2.99 KB	-rw-r--r--
gro_cells.h	443 B	-rw-r--r--
gtp.h	633 B	-rw-r--r--
gue.h	3.23 KB	-rw-r--r--
hwbm.h	937 B	-rw-r--r--
icmp.h	2.01 KB	-rw-r--r--
ieee80211_radiotap.h	6.63 KB	-rw-r--r--
ieee802154_netdev.h	10.24 KB	-rw-r--r--
if_inet6.h	6.13 KB	-rw-r--r--
ife.h	1.06 KB	-rw-r--r--
ila.h	498 B	-rw-r--r--
inet6_connection_sock.h	976 B	-rw-r--r--
inet6_hashtables.h	3.7 KB	-rw-r--r--
inet_common.h	1.89 KB	-rw-r--r--
inet_connection_sock.h	10.48 KB	-rw-r--r--
inet_ecn.h	6.02 KB	-rw-r--r--
inet_frag.h	4.51 KB	-rw-r--r--
inet_hashtables.h	12.91 KB	-rw-r--r--
inet_sock.h	8.25 KB	-rw-r--r--
inet_timewait_sock.h	3.82 KB	-rw-r--r--
inetpeer.h	3.29 KB	-rw-r--r--
ip.h	18.51 KB	-rw-r--r--
ip6_checksum.h	2.89 KB	-rw-r--r--
ip6_fib.h	10.04 KB	-rw-r--r--
ip6_route.h	7.63 KB	-rw-r--r--
ip6_tunnel.h	4.72 KB	-rw-r--r--
ip_fib.h	10.72 KB	-rw-r--r--
ip_tunnels.h	13.61 KB	-rw-r--r--
ip_vs.h	46.78 KB	-rw-r--r--
ipcomp.h	659 B	-rw-r--r--
ipconfig.h	811 B	-rw-r--r--
ipv6.h	29.97 KB	-rw-r--r--
ipv6_frag.h	2.54 KB	-rw-r--r--
ipx.h	4.4 KB	-rw-r--r--
iw_handler.h	20.91 KB	-rw-r--r--
kcm.h	4.96 KB	-rw-r--r--
l3mdev.h	5.86 KB	-rw-r--r--
lapb.h	4.75 KB	-rw-r--r--
lib80211.h	3.92 KB	-rw-r--r--
llc.h	4.41 KB	-rw-r--r--
llc_c_ac.h	9.31 KB	-rw-r--r--
llc_c_ev.h	10.68 KB	-rw-r--r--
llc_c_st.h	1.72 KB	-rw-r--r--
llc_conn.h	4.06 KB	-rw-r--r--
llc_if.h	2.16 KB	-rw-r--r--
llc_pdu.h	14.44 KB	-rw-r--r--
llc_s_ac.h	1.55 KB	-rw-r--r--
llc_s_ev.h	2.2 KB	-rw-r--r--
llc_s_st.h	947 B	-rw-r--r--
llc_sap.h	1.08 KB	-rw-r--r--
lwtunnel.h	5.84 KB	-rw-r--r--
mac80211.h	230.36 KB	-rw-r--r--
mac802154.h	15.27 KB	-rw-r--r--
mip6.h	1.58 KB	-rw-r--r--
mld.h	2.8 KB	-rw-r--r--
mpls.h	932 B	-rw-r--r--
mpls_iptunnel.h	827 B	-rw-r--r--
mrp.h	3.05 KB	-rw-r--r--
ncsi.h	1.92 KB	-rw-r--r--
ndisc.h	13.77 KB	-rw-r--r--
neighbour.h	15.06 KB	-rw-r--r--
net_namespace.h	10.08 KB	-rw-r--r--
net_ratelimit.h	220 B	-rw-r--r--
netevent.h	910 B	-rw-r--r--
netlabel.h	20.74 KB	-rw-r--r--
netlink.h	40.39 KB	-rw-r--r--
netprio_cgroup.h	1.24 KB	-rw-r--r--
netrom.h	7.68 KB	-rw-r--r--
nexthop.h	865 B	-rw-r--r--
nl802154.h	12.09 KB	-rw-r--r--
nsh.h	12.31 KB	-rw-r--r--
p8022.h	447 B	-rw-r--r--
ping.h	3.45 KB	-rw-r--r--
pkt_cls.h	17.34 KB	-rw-r--r--
pkt_sched.h	4.05 KB	-rw-r--r--
pptp.h	557 B	-rw-r--r--
protocol.h	3.89 KB	-rw-r--r--
psample.h	860 B	-rw-r--r--
psnap.h	351 B	-rw-r--r--
raw.h	2.07 KB	-rw-r--r--
rawv6.h	854 B	-rw-r--r--
red.h	10.45 KB	-rw-r--r--
regulatory.h	10.12 KB	-rw-r--r--
request_sock.h	6.46 KB	-rw-r--r--
rose.h	7.62 KB	-rw-r--r--
route.h	10.02 KB	-rw-r--r--
rtnetlink.h	6.13 KB	-rw-r--r--
sch_generic.h	23.3 KB	-rw-r--r--
scm.h	3.5 KB	-rw-r--r--
secure_seq.h	855 B	-rw-r--r--
seg6.h	1.66 KB	-rw-r--r--
seg6_hmac.h	1.65 KB	-rw-r--r--
slhc_vj.h	6.67 KB	-rw-r--r--
smc.h	440 B	-rw-r--r--
snmp.h	5.23 KB	-rw-r--r--
sock.h	70.05 KB	-rw-r--r--
sock_reuseport.h	863 B	-rw-r--r--
stp.h	383 B	-rw-r--r--
strparser.h	3.75 KB	-rw-r--r--
switchdev.h	6.52 KB	-rw-r--r--
tcp.h	62.88 KB	-rw-r--r--
tcp_states.h	1.26 KB	-rw-r--r--
timewait_sock.h	1.11 KB	-rw-r--r--
tipc.h	2.34 KB	-rw-r--r--
tls.h	7.12 KB	-rw-r--r--
transp_v6.h	2.08 KB	-rw-r--r--
tso.h	515 B	-rw-r--r--
tun_proto.h	988 B	-rw-r--r--
udp.h	12.87 KB	-rw-r--r--
udp_tunnel.h	5.12 KB	-rw-r--r--
udplite.h	3.83 KB	-rw-r--r--
vsock_addr.h	1.05 KB	-rw-r--r--
vxlan.h	10.43 KB	-rw-r--r--
wext.h	1.51 KB	-rw-r--r--
wimax.h	19.97 KB	-rw-r--r--
x25.h	9.43 KB	-rw-r--r--
x25device.h	387 B	-rw-r--r--
xfrm.h	53.72 KB	-rw-r--r--

Code Editor : pkt_cls.h

/* 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>

/* Basic packet classifier frontend definitions. */

struct tcf_walker {
	int	stop;
	int	skip;
	int	count;
	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);

enum tcf_block_binder_type {
	TCF_BLOCK_BINDER_TYPE_UNSPEC,
	TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
	TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
};

struct tcf_block_ext_info {
	enum tcf_block_binder_type binder_type;
	tcf_chain_head_change_t *chain_head_change;
	void *chain_head_change_priv;
};

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(struct tcf_block *block, u32 chain_index,
				bool create);
void tcf_chain_put(struct tcf_chain *chain);
int tcf_block_get(struct tcf_block **p_block,
		  struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q);
int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
		      struct tcf_block_ext_info *ei);
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 struct Qdisc *tcf_block_q(struct tcf_block *block)
{
	return block->q;
}

static inline struct net_device *tcf_block_dev(struct tcf_block *block)
{
	return tcf_block_q(block)->dev_queue->dev;
}

void *tcf_block_cb_priv(struct tcf_block_cb *block_cb);
struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block,
					 tc_setup_cb_t *cb, void *cb_ident);
void tcf_block_cb_incref(struct tcf_block_cb *block_cb);
unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb);
struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block,
					     tc_setup_cb_t *cb, void *cb_ident,
					     void *cb_priv);
int tcf_block_cb_register(struct tcf_block *block,
			  tc_setup_cb_t *cb, void *cb_ident,
			  void *cb_priv);
void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb);
void tcf_block_cb_unregister(struct tcf_block *block,
			     tc_setup_cb_t *cb, void *cb_ident);

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

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

static inline
int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
		      struct tcf_block_ext_info *ei)
{
	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 struct net_device *tcf_block_dev(struct tcf_block *block)
{
	return NULL;
}

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

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

static inline
void *tcf_block_cb_priv(struct tcf_block_cb *block_cb)
{
	return NULL;
}

static inline
struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block,
					 tc_setup_cb_t *cb, void *cb_ident)
{
	return NULL;
}

static inline
void tcf_block_cb_incref(struct tcf_block_cb *block_cb)
{
}

static inline
unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb)
{
	return 0;
}

static inline
struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block,
					     tc_setup_cb_t *cb, void *cb_ident,
					     void *cb_priv)
{
	return NULL;
}

static inline
int tcf_block_cb_register(struct tcf_block *block,
			  tc_setup_cb_t *cb, void *cb_ident,
			  void *cb_priv)
{
	return 0;
}

static inline
void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb)
{
}

static inline
void tcf_block_cb_unregister(struct tcf_block *block,
			     tc_setup_cb_t *cb, void *cb_ident)
{
}

static inline int tcf_classify(struct sk_buff *skb, 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
}

static inline void tcf_exts_to_list(const struct tcf_exts *exts,
				    struct list_head *actions)
{
#ifdef CONFIG_NET_CLS_ACT
	int i;

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

list_add_tail(&a->list, actions);
	}
#endif
}

static inline void
tcf_exts_stats_update(const struct tcf_exts *exts,
		      u64 bytes, u64 packets, u64 lastuse)
{
#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, lastuse);
	}

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_has_one_action - check if exactly one action is present
 * @exts: tc filter extensions handle
 *
 * Returns true if exactly one action is present.
 */
static inline bool tcf_exts_has_one_action(struct tcf_exts *exts)
{
#ifdef CONFIG_NET_CLS_ACT
	return exts->nr_actions == 1;
#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, bool ovr);
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_dump_stats(struct sk_buff *skb, struct tcf_exts *exts);

/**
 * struct tcf_pkt_info - packet information
 */
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
 */
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)));
}

#ifdef CONFIG_NET_CLS_IND
#include <net/net_namespace.h>

static inline int
tcf_change_indev(struct net *net, struct nlattr *indev_tlv)
{
	char indev[IFNAMSIZ];
	struct net_device *dev;

if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ)
		return -EINVAL;
	dev = __dev_get_by_name(net, indev);
	if (!dev)
		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;
}
#endif /* CONFIG_NET_CLS_IND */

int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts,
		     enum tc_setup_type type, void *type_data, bool err_stop);

enum tc_block_command {
	TC_BLOCK_BIND,
	TC_BLOCK_UNBIND,
};

struct tc_block_offload {
	enum tc_block_command command;
	enum tcf_block_binder_type binder_type;
	struct tcf_block *block;
};

struct tc_cls_common_offload {
	u32 chain_index;
	__be16 protocol;
	u32 prio;
};

static inline void
tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common,
			   const struct tcf_proto *tp)
{
	cls_common->chain_index = tp->chain->index;
	cls_common->protocol = tp->protocol;
	cls_common->prio = tp->prio;
}

struct tc_cls_u32_knode {
	struct tcf_exts *exts;
	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 tc_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_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))
		return false;

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;
}

enum tc_fl_command {
	TC_CLSFLOWER_REPLACE,
	TC_CLSFLOWER_DESTROY,
	TC_CLSFLOWER_STATS,
};

struct tc_cls_flower_offload {
	struct tc_cls_common_offload common;
	enum tc_fl_command command;
	unsigned long cookie;
	struct flow_dissector *dissector;
	struct fl_flow_key *mask;
	struct fl_flow_key *key;
	struct tcf_exts *exts;
	u32 classid;
};

enum tc_matchall_command {
	TC_CLSMATCHALL_REPLACE,
	TC_CLSMATCHALL_DESTROY,
};

struct tc_cls_matchall_offload {
	struct tc_cls_common_offload common;
	enum tc_matchall_command command;
	struct tcf_exts *exts;
	unsigned long cookie;
};

enum tc_clsbpf_command {
	TC_CLSBPF_OFFLOAD,
	TC_CLSBPF_STATS,
};

struct tc_cls_bpf_offload {
	struct tc_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;
	u32 gen_flags;
};

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;
};

enum tc_red_command {
	TC_RED_REPLACE,
	TC_RED_DESTROY,
	TC_RED_STATS,
	TC_RED_XSTATS,
};

struct tc_red_qopt_offload_params {
	u32 min;
	u32 max;
	u32 probability;
	bool is_ecn;
};
struct tc_red_qopt_offload_stats {
	struct gnet_stats_basic_packed *bstats;
	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_red_qopt_offload_stats stats;
		struct red_stats *xstats;
	};
};

#endif

${this.title}

Code Editor : pkt_cls.h