Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *	Generic internet FLOW.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #ifndef _NET_FLOW_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #define _NET_FLOW_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <net/flow_dissector.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/uidgid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * ifindex generation is per-net namespace, and loopback is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * always the 1st device in ns (see net_dev_init), thus any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * loopback device should get ifindex 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define LOOPBACK_IFINDEX	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) struct flowi_tunnel {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	__be64			tun_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) struct flowi_common {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	int	flowic_oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	int	flowic_iif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	__u32	flowic_mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	__u8	flowic_tos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	__u8	flowic_scope;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	__u8	flowic_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	__u8	flowic_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define FLOWI_FLAG_ANYSRC		0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define FLOWI_FLAG_KNOWN_NH		0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define FLOWI_FLAG_SKIP_NH_OIF		0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	__u32	flowic_secid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	kuid_t  flowic_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	struct flowi_tunnel flowic_tun_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	__u32		flowic_multipath_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) union flowi_uli {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		__be16	dport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		__be16	sport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	} ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		__u8	type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		__u8	code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	} icmpt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		__le16	dport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		__le16	sport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	} dnports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	__be32		spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	__be32		gre_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		__u8	type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	} mht;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) struct flowi4 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	struct flowi_common	__fl_common;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) #define flowi4_oif		__fl_common.flowic_oif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) #define flowi4_iif		__fl_common.flowic_iif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) #define flowi4_mark		__fl_common.flowic_mark
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) #define flowi4_tos		__fl_common.flowic_tos
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) #define flowi4_scope		__fl_common.flowic_scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) #define flowi4_proto		__fl_common.flowic_proto
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) #define flowi4_flags		__fl_common.flowic_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) #define flowi4_secid		__fl_common.flowic_secid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) #define flowi4_tun_key		__fl_common.flowic_tun_key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) #define flowi4_uid		__fl_common.flowic_uid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) #define flowi4_multipath_hash	__fl_common.flowic_multipath_hash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	/* (saddr,daddr) must be grouped, same order as in IP header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	__be32			saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	__be32			daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	union flowi_uli		uli;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) #define fl4_sport		uli.ports.sport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) #define fl4_dport		uli.ports.dport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) #define fl4_icmp_type		uli.icmpt.type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) #define fl4_icmp_code		uli.icmpt.code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) #define fl4_ipsec_spi		uli.spi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) #define fl4_mh_type		uli.mht.type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) #define fl4_gre_key		uli.gre_key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) } __attribute__((__aligned__(BITS_PER_LONG/8)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) static inline void flowi4_init_output(struct flowi4 *fl4, int oif,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 				      __u32 mark, __u8 tos, __u8 scope,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 				      __u8 proto, __u8 flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 				      __be32 daddr, __be32 saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 				      __be16 dport, __be16 sport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 				      kuid_t uid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	fl4->flowi4_oif = oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	fl4->flowi4_iif = LOOPBACK_IFINDEX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	fl4->flowi4_mark = mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	fl4->flowi4_tos = tos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	fl4->flowi4_scope = scope;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	fl4->flowi4_proto = proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	fl4->flowi4_flags = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	fl4->flowi4_secid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	fl4->flowi4_tun_key.tun_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	fl4->flowi4_uid = uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	fl4->daddr = daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	fl4->saddr = saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	fl4->fl4_dport = dport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	fl4->fl4_sport = sport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	fl4->flowi4_multipath_hash = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* Reset some input parameters after previous lookup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static inline void flowi4_update_output(struct flowi4 *fl4, int oif, __u8 tos,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 					__be32 daddr, __be32 saddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	fl4->flowi4_oif = oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	fl4->flowi4_tos = tos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	fl4->daddr = daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	fl4->saddr = saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct flowi6 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	struct flowi_common	__fl_common;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #define flowi6_oif		__fl_common.flowic_oif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #define flowi6_iif		__fl_common.flowic_iif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #define flowi6_mark		__fl_common.flowic_mark
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define flowi6_scope		__fl_common.flowic_scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define flowi6_proto		__fl_common.flowic_proto
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define flowi6_flags		__fl_common.flowic_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define flowi6_secid		__fl_common.flowic_secid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #define flowi6_tun_key		__fl_common.flowic_tun_key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define flowi6_uid		__fl_common.flowic_uid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	struct in6_addr		daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	struct in6_addr		saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	/* Note: flowi6_tos is encoded in flowlabel, too. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	__be32			flowlabel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	union flowi_uli		uli;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define fl6_sport		uli.ports.sport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) #define fl6_dport		uli.ports.dport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define fl6_icmp_type		uli.icmpt.type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define fl6_icmp_code		uli.icmpt.code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define fl6_ipsec_spi		uli.spi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define fl6_mh_type		uli.mht.type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #define fl6_gre_key		uli.gre_key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	__u32			mp_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) } __attribute__((__aligned__(BITS_PER_LONG/8)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct flowidn {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	struct flowi_common	__fl_common;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #define flowidn_oif		__fl_common.flowic_oif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #define flowidn_iif		__fl_common.flowic_iif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #define flowidn_mark		__fl_common.flowic_mark
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #define flowidn_scope		__fl_common.flowic_scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) #define flowidn_proto		__fl_common.flowic_proto
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #define flowidn_flags		__fl_common.flowic_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	__le16			daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	__le16			saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	union flowi_uli		uli;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #define fld_sport		uli.ports.sport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #define fld_dport		uli.ports.dport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) } __attribute__((__aligned__(BITS_PER_LONG/8)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) struct flowi {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		struct flowi_common	__fl_common;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		struct flowi4		ip4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		struct flowi6		ip6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		struct flowidn		dn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	} u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #define flowi_oif	u.__fl_common.flowic_oif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) #define flowi_iif	u.__fl_common.flowic_iif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) #define flowi_mark	u.__fl_common.flowic_mark
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #define flowi_tos	u.__fl_common.flowic_tos
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #define flowi_scope	u.__fl_common.flowic_scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) #define flowi_proto	u.__fl_common.flowic_proto
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) #define flowi_flags	u.__fl_common.flowic_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #define flowi_secid	u.__fl_common.flowic_secid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #define flowi_tun_key	u.__fl_common.flowic_tun_key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) #define flowi_uid	u.__fl_common.flowic_uid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) } __attribute__((__aligned__(BITS_PER_LONG/8)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static inline struct flowi *flowi4_to_flowi(struct flowi4 *fl4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	return container_of(fl4, struct flowi, u.ip4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static inline struct flowi *flowi6_to_flowi(struct flowi6 *fl6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	return container_of(fl6, struct flowi, u.ip6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static inline struct flowi *flowidn_to_flowi(struct flowidn *fldn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	return container_of(fldn, struct flowi, u.dn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) __u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #endif