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-rw-r--r--include/linux/skbuff.h2
-rw-r--r--include/net/flow_dissector.h97
-rw-r--r--include/net/ip.h21
-rw-r--r--include/net/ipv6.h23
-rw-r--r--include/uapi/linux/in.h2
5 files changed, 118 insertions, 27 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 6b41c15efa27..cc612fc0a894 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1943,7 +1943,7 @@ static inline void skb_probe_transport_header(struct sk_buff *skb,
if (skb_transport_header_was_set(skb))
return;
else if (skb_flow_dissect_flow_keys(skb, &keys))
- skb_set_transport_header(skb, keys.basic.thoff);
+ skb_set_transport_header(skb, keys.control.thoff);
else
skb_set_transport_header(skb, offset_hint);
}
diff --git a/include/net/flow_dissector.h b/include/net/flow_dissector.h
index bac9c1421f58..1a8c22419936 100644
--- a/include/net/flow_dissector.h
+++ b/include/net/flow_dissector.h
@@ -7,31 +7,79 @@
#include <uapi/linux/if_ether.h>
/**
+ * struct flow_dissector_key_control:
+ * @thoff: Transport header offset
+ */
+struct flow_dissector_key_control {
+ u16 thoff;
+ u16 addr_type;
+};
+
+/**
* struct flow_dissector_key_basic:
* @thoff: Transport header offset
* @n_proto: Network header protocol (eg. IPv4/IPv6)
* @ip_proto: Transport header protocol (eg. TCP/UDP)
*/
struct flow_dissector_key_basic {
- u16 thoff;
__be16 n_proto;
u8 ip_proto;
+ u8 padding;
+};
+
+struct flow_dissector_key_tags {
+ u32 vlan_id:12,
+ flow_label:20;
+};
+
+struct flow_dissector_key_keyid {
+ __be32 keyid;
};
/**
- * struct flow_dissector_key_addrs:
- * @src: source ip address in case of IPv4
- * For IPv6 it contains 32bit hash of src address
- * @dst: destination ip address in case of IPv4
- * For IPv6 it contains 32bit hash of dst address
+ * struct flow_dissector_key_ipv4_addrs:
+ * @src: source ip address
+ * @dst: destination ip address
*/
-struct flow_dissector_key_addrs {
+struct flow_dissector_key_ipv4_addrs {
/* (src,dst) must be grouped, in the same way than in IP header */
__be32 src;
__be32 dst;
};
/**
+ * struct flow_dissector_key_ipv6_addrs:
+ * @src: source ip address
+ * @dst: destination ip address
+ */
+struct flow_dissector_key_ipv6_addrs {
+ /* (src,dst) must be grouped, in the same way than in IP header */
+ struct in6_addr src;
+ struct in6_addr dst;
+};
+
+/**
+ * struct flow_dissector_key_tipc_addrs:
+ * @srcnode: source node address
+ */
+struct flow_dissector_key_tipc_addrs {
+ __be32 srcnode;
+};
+
+/**
+ * struct flow_dissector_key_addrs:
+ * @v4addrs: IPv4 addresses
+ * @v6addrs: IPv6 addresses
+ */
+struct flow_dissector_key_addrs {
+ union {
+ struct flow_dissector_key_ipv4_addrs v4addrs;
+ struct flow_dissector_key_ipv6_addrs v6addrs;
+ struct flow_dissector_key_tipc_addrs tipcaddrs;
+ };
+};
+
+/**
* flow_dissector_key_tp_ports:
* @ports: port numbers of Transport header
* src: source port number
@@ -47,16 +95,6 @@ struct flow_dissector_key_ports {
};
};
-/**
- * struct flow_dissector_key_ipv6_addrs:
- * @src: source ip address
- * @dst: destination ip address
- */
-struct flow_dissector_key_ipv6_addrs {
- /* (src,dst) must be grouped, in the same way than in IP header */
- struct in6_addr src;
- struct in6_addr dst;
-};
/**
* struct flow_dissector_key_eth_addrs:
@@ -70,12 +108,17 @@ struct flow_dissector_key_eth_addrs {
};
enum flow_dissector_key_id {
+ FLOW_DISSECTOR_KEY_CONTROL, /* struct flow_dissector_key_control */
FLOW_DISSECTOR_KEY_BASIC, /* struct flow_dissector_key_basic */
- FLOW_DISSECTOR_KEY_IPV4_ADDRS, /* struct flow_dissector_key_addrs */
- FLOW_DISSECTOR_KEY_IPV6_HASH_ADDRS, /* struct flow_dissector_key_addrs */
- FLOW_DISSECTOR_KEY_PORTS, /* struct flow_dissector_key_ports */
+ FLOW_DISSECTOR_KEY_IPV4_ADDRS, /* struct flow_dissector_key_ipv4_addrs */
FLOW_DISSECTOR_KEY_IPV6_ADDRS, /* struct flow_dissector_key_ipv6_addrs */
+ FLOW_DISSECTOR_KEY_PORTS, /* struct flow_dissector_key_ports */
FLOW_DISSECTOR_KEY_ETH_ADDRS, /* struct flow_dissector_key_eth_addrs */
+ FLOW_DISSECTOR_KEY_TIPC_ADDRS, /* struct flow_dissector_key_tipc_addrs */
+ FLOW_DISSECTOR_KEY_VLANID, /* struct flow_dissector_key_flow_tags */
+ FLOW_DISSECTOR_KEY_FLOW_LABEL, /* struct flow_dissector_key_flow_tags */
+ FLOW_DISSECTOR_KEY_GRE_KEYID, /* struct flow_dissector_key_keyid */
+ FLOW_DISSECTOR_KEY_MPLS_ENTROPY, /* struct flow_dissector_key_keyid */
FLOW_DISSECTOR_KEY_MAX,
};
@@ -109,11 +152,21 @@ static inline bool skb_flow_dissect(const struct sk_buff *skb,
}
struct flow_keys {
- struct flow_dissector_key_addrs addrs;
- struct flow_dissector_key_ports ports;
+ struct flow_dissector_key_control control;
+#define FLOW_KEYS_HASH_START_FIELD basic
struct flow_dissector_key_basic basic;
+ struct flow_dissector_key_tags tags;
+ struct flow_dissector_key_keyid keyid;
+ struct flow_dissector_key_ports ports;
+ struct flow_dissector_key_addrs addrs;
};
+#define FLOW_KEYS_HASH_OFFSET \
+ offsetof(struct flow_keys, FLOW_KEYS_HASH_START_FIELD)
+
+__be32 flow_get_u32_src(const struct flow_keys *flow);
+__be32 flow_get_u32_dst(const struct flow_keys *flow);
+
extern struct flow_dissector flow_keys_dissector;
extern struct flow_dissector flow_keys_buf_dissector;
diff --git a/include/net/ip.h b/include/net/ip.h
index 9b976cf99122..0750a186ea63 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -355,13 +355,30 @@ static inline __wsum inet_compute_pseudo(struct sk_buff *skb, int proto)
skb->len, proto, 0);
}
+/* copy IPv4 saddr & daddr to flow_keys, possibly using 64bit load/store
+ * Equivalent to : flow->v4addrs.src = iph->saddr;
+ * flow->v4addrs.dst = iph->daddr;
+ */
+static inline void iph_to_flow_copy_v4addrs(struct flow_keys *flow,
+ const struct iphdr *iph)
+{
+ BUILD_BUG_ON(offsetof(typeof(flow->addrs), v4addrs.dst) !=
+ offsetof(typeof(flow->addrs), v4addrs.src) +
+ sizeof(flow->addrs.v4addrs.src));
+ memcpy(&flow->addrs.v4addrs, &iph->saddr, sizeof(flow->addrs.v4addrs));
+ flow->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
+}
+
static inline void inet_set_txhash(struct sock *sk)
{
struct inet_sock *inet = inet_sk(sk);
struct flow_keys keys;
- keys.addrs.src = inet->inet_saddr;
- keys.addrs.dst = inet->inet_daddr;
+ memset(&keys, 0, sizeof(keys));
+
+ keys.addrs.v4addrs.src = inet->inet_saddr;
+ keys.addrs.v4addrs.dst = inet->inet_daddr;
+ keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
keys.ports.src = inet->inet_sport;
keys.ports.dst = inet->inet_dport;
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 35d485c78080..82dbdb092a5d 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -692,6 +692,20 @@ static inline int ip6_sk_dst_hoplimit(struct ipv6_pinfo *np, struct flowi6 *fl6,
return hlimit;
}
+/* copy IPv6 saddr & daddr to flow_keys, possibly using 64bit load/store
+ * Equivalent to : flow->v6addrs.src = iph->saddr;
+ * flow->v6addrs.dst = iph->daddr;
+ */
+static inline void iph_to_flow_copy_v6addrs(struct flow_keys *flow,
+ const struct ipv6hdr *iph)
+{
+ BUILD_BUG_ON(offsetof(typeof(flow->addrs), v6addrs.dst) !=
+ offsetof(typeof(flow->addrs), v6addrs.src) +
+ sizeof(flow->addrs.v6addrs.src));
+ memcpy(&flow->addrs.v6addrs, &iph->saddr, sizeof(flow->addrs.v6addrs));
+ flow->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
+}
+
#if IS_ENABLED(CONFIG_IPV6)
static inline void ip6_set_txhash(struct sock *sk)
{
@@ -699,8 +713,13 @@ static inline void ip6_set_txhash(struct sock *sk)
struct ipv6_pinfo *np = inet6_sk(sk);
struct flow_keys keys;
- keys.addrs.src = (__force __be32)ipv6_addr_hash(&np->saddr);
- keys.addrs.dst = (__force __be32)ipv6_addr_hash(&sk->sk_v6_daddr);
+ memset(&keys, 0, sizeof(keys));
+
+ memcpy(&keys.addrs.v6addrs.src, &np->saddr,
+ sizeof(keys.addrs.v6addrs.src));
+ memcpy(&keys.addrs.v6addrs.dst, &sk->sk_v6_daddr,
+ sizeof(keys.addrs.v6addrs.dst));
+ keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
keys.ports.src = inet->inet_sport;
keys.ports.dst = inet->inet_dport;
diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h
index 589ced069e8a..641338bef651 100644
--- a/include/uapi/linux/in.h
+++ b/include/uapi/linux/in.h
@@ -69,6 +69,8 @@ enum {
#define IPPROTO_SCTP IPPROTO_SCTP
IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */
#define IPPROTO_UDPLITE IPPROTO_UDPLITE
+ IPPROTO_MPLS = 137, /* MPLS in IP (RFC 4023) */
+#define IPPROTO_MPLS IPPROTO_MPLS
IPPROTO_RAW = 255, /* Raw IP packets */
#define IPPROTO_RAW IPPROTO_RAW
IPPROTO_MAX
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-28 11:13:56 +0000