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-rw-r--r--include/net/flow.h142
1 files changed, 57 insertions, 85 deletions
diff --git a/include/net/flow.h b/include/net/flow.h
index 628e11b98c58..ae9481c40063 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
*
* Generic internet FLOW.
@@ -7,22 +8,43 @@
#ifndef _NET_FLOW_H
#define _NET_FLOW_H
-#include <linux/socket.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;
- __u8 flowic_tos;
+ dscp_t flowic_dscp;
__u8 flowic_scope;
__u8 flowic_proto;
__u8 flowic_flags;
#define FLOWI_FLAG_ANYSRC 0x01
-#define FLOWI_FLAG_CAN_SLEEP 0x02
-#define FLOWI_FLAG_KNOWN_NH 0x04
+#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 {
@@ -36,12 +58,6 @@ union flowi_uli {
__u8 code;
} icmpt;
- struct {
- __le16 dport;
- __le16 sport;
- } dnports;
-
- __be32 spi;
__be32 gre_key;
struct {
@@ -53,12 +69,16 @@ 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_tos __fl_common.flowic_tos
+#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;
@@ -69,7 +89,6 @@ struct flowi4 {
#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)));
@@ -78,69 +97,61 @@ 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)
+ __be16 dport, __be16 sport,
+ kuid_t uid)
{
fl4->flowi4_oif = oif;
- fl4->flowi4_iif = 0;
+ fl4->flowi4_iif = LOOPBACK_IFINDEX;
+ fl4->flowi4_l3mdev = 0;
fl4->flowi4_mark = mark;
- fl4->flowi4_tos = tos;
+ 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, __u8 tos,
+static inline void flowi4_update_output(struct flowi4 *fl4, int oif,
__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_l3mdev __fl_common.flowic_l3mdev
#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
+#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_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
+ __u32 mp_hash;
} __attribute__((__aligned__(BITS_PER_LONG/8)));
struct flowi {
@@ -148,16 +159,18 @@ struct flowi {
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_l3mdev u.__fl_common.flowic_l3mdev
#define flowi_mark u.__fl_common.flowic_mark
-#define flowi_tos u.__fl_common.flowic_tos
+#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)
@@ -165,62 +178,21 @@ 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)
+static inline struct flowi_common *flowi4_to_flowi_common(struct flowi4 *fl4)
{
- return container_of(fl6, struct flowi, u.ip6);
+ return &(fl4->__fl_common);
}
-static inline struct flowi *flowidn_to_flowi(struct flowidn *fldn)
+static inline struct flowi *flowi6_to_flowi(struct flowi6 *fl6)
{
- return container_of(fldn, struct flowi, u.dn);
+ return container_of(fl6, struct flowi, u.ip6);
}
-typedef unsigned long flow_compare_t;
-
-static inline size_t flow_key_size(u16 family)
+static inline struct flowi_common *flowi6_to_flowi_common(struct flowi6 *fl6)
{
- 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;
+ return &(fl6->__fl_common);
}
-#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);
-
-extern struct flow_cache_object *flow_cache_lookup(
- struct net *net, const struct flowi *key, u16 family,
- u8 dir, flow_resolve_t resolver, void *ctx);
-
-extern void flow_cache_flush(void);
-extern void flow_cache_flush_deferred(void);
-extern atomic_t flow_cache_genid;
+__u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys);
#endif
generated by cgit (git 2.34.1) at 2025-12-21 21:13:30 +0000