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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199/* SPDX-License-Identifier: GPL-2.0 *//* * * Generic internet FLOW. * */
#ifndef _NET_FLOW_H#define _NET_FLOW_H
#include <linux/in6.h>#include <linux/atomic.h>#include <linux/container_of.h>#include <linux/uidgid.h>#include <net/inet_dscp.h>
struct flow_keys;
/* * 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; int flowic_l3mdev; __u32 flowic_mark; dscp_t flowic_dscp; __u8 flowic_scope; __u8 flowic_proto; __u8 flowic_flags;#define FLOWI_FLAG_ANYSRC 0x01#define FLOWI_FLAG_KNOWN_NH 0x02#define FLOWI_FLAG_L3MDEV_OIF 0x04#define FLOWI_FLAG_ANY_SPORT 0x08 __u32 flowic_secid; kuid_t flowic_uid; __u32 flowic_multipath_hash; struct flowi_tunnel flowic_tun_key;};
union flowi_uli { struct { __be16 dport; __be16 sport; } ports;
struct { __u8 type; __u8 code; } icmpt;
__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_l3mdev __fl_common.flowic_l3mdev#define flowi4_mark __fl_common.flowic_mark#define flowi4_dscp __fl_common.flowic_dscp#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#define flowi4_multipath_hash __fl_common.flowic_multipath_hash
/* (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_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_l3mdev = 0; fl4->flowi4_mark = mark; fl4->flowi4_dscp = inet_dsfield_to_dscp(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; fl4->flowi4_multipath_hash = 0;}
/* Reset some input parameters after previous lookup */static inline void flowi4_update_output(struct flowi4 *fl4, int oif, __be32 daddr, __be32 saddr){ fl4->flowi4_oif = oif; 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_l3mdev __fl_common.flowic_l3mdev#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_dscp 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_mh_type uli.mht.type#define fl6_gre_key uli.gre_key __u32 mp_hash;} __attribute__((__aligned__(BITS_PER_LONG/8)));
struct flowi { union { struct flowi_common __fl_common; struct flowi4 ip4; struct flowi6 ip6; } u;#define flowi_oif u.__fl_common.flowic_oif#define flowi_iif u.__fl_common.flowic_iif#define flowi_l3mdev u.__fl_common.flowic_l3mdev#define flowi_mark u.__fl_common.flowic_mark#define flowi_dscp u.__fl_common.flowic_dscp#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_common *flowi4_to_flowi_common(struct flowi4 *fl4){ return &(fl4->__fl_common);}
static inline struct flowi *flowi6_to_flowi(struct flowi6 *fl6){ return container_of(fl6, struct flowi, u.ip6);}
static inline struct flowi_common *flowi6_to_flowi_common(struct flowi6 *fl6){ return &(fl6->__fl_common);}
__u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys);
#endif