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/* SPDX-License-Identifier: GPL-2.0 */
/*
 *
 *	Generic internet FLOW.
 *
 */

#ifndef _NET_FLOW_H
#define _NET_FLOW_H

#include <linux/socket.h>
#include <linux/in6.h>
#include <linux/atomic.h>
#include <net/flow_dissector.h>
#include <linux/uidgid.h>

/*
 * ifindex generation is per-net namespace, and loopback is
 * always the 1st device in ns (see net_dev_init), thus any
 * loopback device should get ifindex 1
 */

#define LOOPBACK_IFINDEX	1

struct flowi_tunnel {
	__be64			tun_id;
};

struct flowi_common {
	int	flowic_oif;
	int	flowic_iif;
	__u32	flowic_mark;
	__u8	flowic_tos;
	__u8	flowic_scope;
	__u8	flowic_proto;
	__u8	flowic_flags;
#define FLOWI_FLAG_ANYSRC		0x01
#define FLOWI_FLAG_KNOWN_NH		0x02
#define FLOWI_FLAG_SKIP_NH_OIF		0x04
	__u32	flowic_secid;
	struct flowi_tunnel flowic_tun_key;
	kuid_t  flowic_uid;
};

union flowi_uli {
	struct {
		__be16	dport;
		__be16	sport;
	} ports;

	struct {
		__u8	type;
		__u8	code;
	} icmpt;

	struct {
		__le16	dport;
		__le16	sport;
	} dnports;

	__be32		spi;
	__be32		gre_key;

	struct {
		__u8	type;
	} mht;
};

struct flowi4 {
	struct flowi_common	__fl_common;
#define flowi4_oif		__fl_common.flowic_oif
#define flowi4_iif		__fl_common.flowic_iif
#define flowi4_mark		__fl_common.flowic_mark
#define flowi4_tos		__fl_common.flowic_tos
#define flowi4_scope		__fl_common.flowic_scope
#define flowi4_proto		__fl_common.flowic_proto
#define flowi4_flags		__fl_common.flowic_flags
#define flowi4_secid		__fl_common.flowic_secid
#define flowi4_tun_key		__fl_common.flowic_tun_key
#define flowi4_uid		__fl_common.flowic_uid

	/* (saddr,daddr) must be grouped, same order as in IP header */
	__be32			saddr;
	__be32			daddr;

	union flowi_uli		uli;
#define fl4_sport		uli.ports.sport
#define fl4_dport		uli.ports.dport
#define fl4_icmp_type		uli.icmpt.type
#define fl4_icmp_code		uli.icmpt.code
#define fl4_ipsec_spi		uli.spi
#define fl4_mh_type		uli.mht.type
#define fl4_gre_key		uli.gre_key
} __attribute__((__aligned__(BITS_PER_LONG/8)));

static inline void flowi4_init_output(struct flowi4 *fl4, int oif,
				      __u32 mark, __u8 tos, __u8 scope,
				      __u8 proto, __u8 flags,
				      __be32 daddr, __be32 saddr,
				      __be16 dport, __be16 sport,
				      kuid_t uid)
{
	fl4->flowi4_oif = oif;
	fl4->flowi4_iif = LOOPBACK_IFINDEX;
	fl4->flowi4_mark = mark;
	fl4->flowi4_tos = tos;
	fl4->flowi4_scope = scope;
	fl4->flowi4_proto = proto;
	fl4->flowi4_flags = flags;
	fl4->flowi4_secid = 0;
	fl4->flowi4_tun_key.tun_id = 0;
	fl4->flowi4_uid = uid;
	fl4->daddr = daddr;
	fl4->saddr = saddr;
	fl4->fl4_dport = dport;
	fl4->fl4_sport = sport;
}

/* Reset some input parameters after previous lookup */
static inline void flowi4_update_output(struct flowi4 *fl4, int oif, __u8 tos,
					__be32 daddr, __be32 saddr)
{
	fl4->flowi4_oif = oif;
	fl4->flowi4_tos = tos;
	fl4->daddr = daddr;
	fl4->saddr = saddr;
}
				      

struct flowi6 {
	struct flowi_common	__fl_common;
#define flowi6_oif		__fl_common.flowic_oif
#define flowi6_iif		__fl_common.flowic_iif
#define flowi6_mark		__fl_common.flowic_mark
#define flowi6_scope		__fl_common.flowic_scope
#define flowi6_proto		__fl_common.flowic_proto
#define flowi6_flags		__fl_common.flowic_flags
#define flowi6_secid		__fl_common.flowic_secid
#define flowi6_tun_key		__fl_common.flowic_tun_key
#define flowi6_uid		__fl_common.flowic_uid
	struct in6_addr		daddr;
	struct in6_addr		saddr;
	/* Note: flowi6_tos is encoded in flowlabel, too. */
	__be32			flowlabel;
	union flowi_uli		uli;
#define fl6_sport		uli.ports.sport
#define fl6_dport		uli.ports.dport
#define fl6_icmp_type		uli.icmpt.type
#define fl6_icmp_code		uli.icmpt.code
#define fl6_ipsec_spi		uli.spi
#define fl6_mh_type		uli.mht.type
#define fl6_gre_key		uli.gre_key
	__u32			mp_hash;
} __attribute__((__aligned__(BITS_PER_LONG/8)));

struct flowidn {
	struct flowi_common	__fl_common;
#define flowidn_oif		__fl_common.flowic_oif
#define flowidn_iif		__fl_common.flowic_iif
#define flowidn_mark		__fl_common.flowic_mark
#define flowidn_scope		__fl_common.flowic_scope
#define flowidn_proto		__fl_common.flowic_proto
#define flowidn_flags		__fl_common.flowic_flags
	__le16			daddr;
	__le16			saddr;
	union flowi_uli		uli;
#define fld_sport		uli.ports.sport
#define fld_dport		uli.ports.dport
} __attribute__((__aligned__(BITS_PER_LONG/8)));

struct flowi {
	union {
		struct flowi_common	__fl_common;
		struct flowi4		ip4;
		struct flowi6		ip6;
		struct flowidn		dn;
	} u;
#define flowi_oif	u.__fl_common.flowic_oif
#define flowi_iif	u.__fl_common.flowic_iif
#define flowi_mark	u.__fl_common.flowic_mark
#define flowi_tos	u.__fl_common.flowic_tos
#define flowi_scope	u.__fl_common.flowic_scope
#define flowi_proto	u.__fl_common.flowic_proto
#define flowi_flags	u.__fl_common.flowic_flags
#define flowi_secid	u.__fl_common.flowic_secid
#define flowi_tun_key	u.__fl_common.flowic_tun_key
#define flowi_uid	u.__fl_common.flowic_uid
} __attribute__((__aligned__(BITS_PER_LONG/8)));

static inline struct flowi *flowi4_to_flowi(struct flowi4 *fl4)
{
	return container_of(fl4, struct flowi, u.ip4);
}

static inline struct flowi *flowi6_to_flowi(struct flowi6 *fl6)
{
	return container_of(fl6, struct flowi, u.ip6);
}

static inline struct flowi *flowidn_to_flowi(struct flowidn *fldn)
{
	return container_of(fldn, struct flowi, u.dn);
}

typedef unsigned long flow_compare_t;

static inline unsigned int flow_key_size(u16 family)
{
	switch (family) {
	case AF_INET:
		BUILD_BUG_ON(sizeof(struct flowi4) % sizeof(flow_compare_t));
		return sizeof(struct flowi4) / sizeof(flow_compare_t);
	case AF_INET6:
		BUILD_BUG_ON(sizeof(struct flowi6) % sizeof(flow_compare_t));
		return sizeof(struct flowi6) / sizeof(flow_compare_t);
	case AF_DECnet:
		BUILD_BUG_ON(sizeof(struct flowidn) % sizeof(flow_compare_t));
		return sizeof(struct flowidn) / sizeof(flow_compare_t);
	}
	return 0;
}

__u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys);

static inline __u32 get_hash_from_flowi6(const struct flowi6 *fl6)
{
	struct flow_keys keys;

	return __get_hash_from_flowi6(fl6, &keys);
}

__u32 __get_hash_from_flowi4(const struct flowi4 *fl4, struct flow_keys *keys);

static inline __u32 get_hash_from_flowi4(const struct flowi4 *fl4)
{
	struct flow_keys keys;

	return __get_hash_from_flowi4(fl4, &keys);
}

#endif

Filemanager

Name Type Size Permission Actions
9p Folder 0755
bluetooth Folder 0755
caif Folder 0755
iucv Folder 0755
netfilter Folder 0755
netns Folder 0755
nfc Folder 0755
phonet Folder 0755
sctp Folder 0755
tc_act Folder 0755
6lowpan.h File 10.03 KB 0644
Space.h File 1.15 KB 0644
act_api.h File 6.38 KB 0644
addrconf.h File 12.63 KB 0644
af_ieee802154.h File 1.55 KB 0644
af_rxrpc.h File 2.79 KB 0644
af_unix.h File 2.22 KB 0644
af_vsock.h File 7.21 KB 0644
ah.h File 382 B 0644
arp.h File 2 KB 0644
atmclip.h File 1.48 KB 0644
ax25.h File 15.02 KB 0644
ax88796.h File 998 B 0644
bond_3ad.h File 9.79 KB 0644
bond_alb.h File 6.6 KB 0644
bond_options.h File 3.92 KB 0644
bonding.h File 19.1 KB 0644
busy_poll.h File 3.8 KB 0644
calipso.h File 2.15 KB 0644
cfg80211-wext.h File 1.95 KB 0644
cfg80211.h File 221.24 KB 0644
cfg802154.h File 10.89 KB 0644
checksum.h File 4.76 KB 0644
cipso_ipv4.h File 8.2 KB 0644
cls_cgroup.h File 2.15 KB 0644
codel.h File 5.65 KB 0644
codel_impl.h File 7.98 KB 0644
codel_qdisc.h File 2.9 KB 0644
compat.h File 2.11 KB 0644
datalink.h File 619 B 0644
dcbevent.h File 1.26 KB 0644
dcbnl.h File 4.2 KB 0644
devlink.h File 13.25 KB 0644
dn.h File 6.88 KB 0644
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dn_fib.h File 3.98 KB 0644
dn_neigh.h File 968 B 0644
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dsa.h File 13.94 KB 0644
dsfield.h File 1.11 KB 0644
dst.h File 13.48 KB 0644
dst_cache.h File 2.53 KB 0644
dst_metadata.h File 5.39 KB 0644
dst_ops.h File 2 KB 0644
erspan.h File 2.11 KB 0644
esp.h File 877 B 0644
ethoc.h File 538 B 0644
fib_notifier.h File 1.29 KB 0644
fib_rules.h File 4.18 KB 0644
firewire.h File 636 B 0644
flow.h File 6.16 KB 0644
flow_dissector.h File 7.55 KB 0644
fou.h File 549 B 0644
fq.h File 2.67 KB 0644
fq_impl.h File 6.9 KB 0644
garp.h File 2.62 KB 0644
gen_stats.h File 2.34 KB 0644
genetlink.h File 11.3 KB 0644
geneve.h File 1.67 KB 0644
gre.h File 2.99 KB 0644
gro_cells.h File 443 B 0644
gtp.h File 633 B 0644
gue.h File 3.23 KB 0644
hwbm.h File 937 B 0644
icmp.h File 2.01 KB 0644
ieee80211_radiotap.h File 6.63 KB 0644
ieee802154_netdev.h File 9.14 KB 0644
if_inet6.h File 6.13 KB 0644
ife.h File 1.06 KB 0644
ila.h File 498 B 0644
inet6_connection_sock.h File 976 B 0644
inet6_hashtables.h File 3.7 KB 0644
inet_common.h File 1.89 KB 0644
inet_connection_sock.h File 10.48 KB 0644
inet_ecn.h File 6.02 KB 0644
inet_frag.h File 4.51 KB 0644
inet_hashtables.h File 12.91 KB 0644
inet_sock.h File 8.25 KB 0644
inet_timewait_sock.h File 3.82 KB 0644
inetpeer.h File 3.29 KB 0644
ip.h File 18.51 KB 0644
ip6_checksum.h File 2.89 KB 0644
ip6_fib.h File 10.04 KB 0644
ip6_route.h File 7.63 KB 0644
ip6_tunnel.h File 4.72 KB 0644
ip_fib.h File 10.72 KB 0644
ip_tunnels.h File 13.61 KB 0644
ip_vs.h File 46.78 KB 0644
ipcomp.h File 659 B 0644
ipconfig.h File 811 B 0644
ipv6.h File 29.97 KB 0644
ipv6_frag.h File 2.54 KB 0644
ipx.h File 4.4 KB 0644
iw_handler.h File 20.91 KB 0644
kcm.h File 4.96 KB 0644
l3mdev.h File 5.86 KB 0644
lapb.h File 4.75 KB 0644
lib80211.h File 3.92 KB 0644
llc.h File 4.41 KB 0644
llc_c_ac.h File 9.31 KB 0644
llc_c_ev.h File 10.68 KB 0644
llc_c_st.h File 1.72 KB 0644
llc_conn.h File 4.06 KB 0644
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llc_pdu.h File 14.44 KB 0644
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llc_s_ev.h File 2.2 KB 0644
llc_s_st.h File 947 B 0644
llc_sap.h File 1.08 KB 0644
lwtunnel.h File 5.84 KB 0644
mac80211.h File 230.36 KB 0644
mac802154.h File 15.27 KB 0644
mip6.h File 1.58 KB 0644
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mpls.h File 932 B 0644
mpls_iptunnel.h File 827 B 0644
mrp.h File 3.03 KB 0644
ncsi.h File 1.92 KB 0644
ndisc.h File 13.77 KB 0644
neighbour.h File 15.06 KB 0644
net_namespace.h File 10.08 KB 0644
net_ratelimit.h File 220 B 0644
netevent.h File 910 B 0644
netlabel.h File 20.74 KB 0644
netlink.h File 40.39 KB 0644
netprio_cgroup.h File 1.24 KB 0644
netrom.h File 7.68 KB 0644
nexthop.h File 865 B 0644
nl802154.h File 12.09 KB 0644
nsh.h File 12.31 KB 0644
p8022.h File 447 B 0644
ping.h File 3.45 KB 0644
pkt_cls.h File 17.34 KB 0644
pkt_sched.h File 4.05 KB 0644
pptp.h File 557 B 0644
protocol.h File 4.08 KB 0644
psample.h File 860 B 0644
psnap.h File 351 B 0644
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tun_proto.h File 988 B 0644
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udp_tunnel.h File 5.12 KB 0644
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x25.h File 9.43 KB 0644
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