mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 16:30:52 +07:00
6a662719c9
As suggested by Julian:
Simply, flowi4_iif must not contain 0, it does not
look logical to ignore all ip rules with specified iif.
because in fib_rule_match() we do:
if (rule->iifindex && (rule->iifindex != fl->flowi_iif))
goto out;
flowi4_iif should be LOOPBACK_IFINDEX by default.
We need to move LOOPBACK_IFINDEX to include/net/flow.h:
1) It is mostly used by flowi_iif
2) Fix the following compile error if we use it in flow.h
by the patches latter:
In file included from include/linux/netfilter.h:277:0,
from include/net/netns/netfilter.h:5,
from include/net/net_namespace.h:21,
from include/linux/netdevice.h:43,
from include/linux/icmpv6.h:12,
from include/linux/ipv6.h:61,
from include/net/ipv6.h:16,
from include/linux/sunrpc/clnt.h:27,
from include/linux/nfs_fs.h:30,
from init/do_mounts.c:32:
include/net/flow.h: In function ‘flowi4_init_output’:
include/net/flow.h:84:32: error: ‘LOOPBACK_IFINDEX’ undeclared (first use in this function)
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Julian Anastasov <ja@ssi.bg>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
237 lines
6.0 KiB
C
237 lines
6.0 KiB
C
/*
|
|
*
|
|
* Generic internet FLOW.
|
|
*
|
|
*/
|
|
|
|
#ifndef _NET_FLOW_H
|
|
#define _NET_FLOW_H
|
|
|
|
#include <linux/socket.h>
|
|
#include <linux/in6.h>
|
|
#include <linux/atomic.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_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
|
|
__u32 flowic_secid;
|
|
};
|
|
|
|
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
|
|
|
|
/* (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)
|
|
{
|
|
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->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_tos __fl_common.flowic_tos
|
|
#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
|
|
struct in6_addr daddr;
|
|
struct in6_addr saddr;
|
|
__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
|
|
} __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
|
|
} __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 size_t 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;
|
|
}
|
|
|
|
#define FLOW_DIR_IN 0
|
|
#define FLOW_DIR_OUT 1
|
|
#define FLOW_DIR_FWD 2
|
|
|
|
struct net;
|
|
struct sock;
|
|
struct flow_cache_ops;
|
|
|
|
struct flow_cache_object {
|
|
const struct flow_cache_ops *ops;
|
|
};
|
|
|
|
struct flow_cache_ops {
|
|
struct flow_cache_object *(*get)(struct flow_cache_object *);
|
|
int (*check)(struct flow_cache_object *);
|
|
void (*delete)(struct flow_cache_object *);
|
|
};
|
|
|
|
typedef struct flow_cache_object *(*flow_resolve_t)(
|
|
struct net *net, const struct flowi *key, u16 family,
|
|
u8 dir, struct flow_cache_object *oldobj, void *ctx);
|
|
|
|
struct flow_cache_object *flow_cache_lookup(struct net *net,
|
|
const struct flowi *key, u16 family,
|
|
u8 dir, flow_resolve_t resolver,
|
|
void *ctx);
|
|
int flow_cache_init(struct net *net);
|
|
void flow_cache_fini(struct net *net);
|
|
|
|
void flow_cache_flush(struct net *net);
|
|
void flow_cache_flush_deferred(struct net *net);
|
|
extern atomic_t flow_cache_genid;
|
|
|
|
#endif
|