/*
- * Copyright (c) 2007-2013 Nicira, Inc.
+ * Copyright (c) 2007-2014 Nicira, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
#include <linux/jiffies.h>
#include <linux/time.h>
#include <linux/flex_array.h>
-
#include <net/inet_ecn.h>
-#include <net/ip_tunnels.h>
struct sk_buff;
/* Used to memset ovs_key_ipv4_tunnel padding. */
#define OVS_TUNNEL_KEY_SIZE \
- (offsetof(struct ovs_key_ipv4_tunnel, ipv4_ttl) + \
- FIELD_SIZEOF(struct ovs_key_ipv4_tunnel, ipv4_ttl))
+ (offsetof(struct ovs_key_ipv4_tunnel, tp_dst) + \
+ FIELD_SIZEOF(struct ovs_key_ipv4_tunnel, tp_dst))
struct ovs_key_ipv4_tunnel {
__be64 tun_id;
__be16 tun_flags;
u8 ipv4_tos;
u8 ipv4_ttl;
+ __be16 tp_src;
+ __be16 tp_dst;
+} __packed __aligned(4); /* Minimize padding. */
+
+struct ovs_tunnel_info {
+ struct ovs_key_ipv4_tunnel tunnel;
+ const struct geneve_opt *options;
+ u8 options_len;
};
-static inline void ovs_flow_tun_key_init(struct ovs_key_ipv4_tunnel *tun_key,
- const struct iphdr *iph, __be64 tun_id,
- __be16 tun_flags)
+/* Store options at the end of the array if they are less than the
+ * maximum size. This allows us to get the benefits of variable length
+ * matching for small options.
+ */
+#define GENEVE_OPTS(flow_key, opt_len) \
+ ((struct geneve_opt *)((flow_key)->tun_opts + \
+ FIELD_SIZEOF(struct sw_flow_key, tun_opts) - \
+ opt_len))
+
+static inline void __ovs_flow_tun_info_init(struct ovs_tunnel_info *tun_info,
+ __be32 saddr, __be32 daddr,
+ u8 tos, u8 ttl,
+ __be16 tp_src,
+ __be16 tp_dst,
+ __be64 tun_id,
+ __be16 tun_flags,
+ const struct geneve_opt *opts,
+ u8 opts_len)
+{
+ tun_info->tunnel.tun_id = tun_id;
+ tun_info->tunnel.ipv4_src = saddr;
+ tun_info->tunnel.ipv4_dst = daddr;
+ tun_info->tunnel.ipv4_tos = tos;
+ tun_info->tunnel.ipv4_ttl = ttl;
+ tun_info->tunnel.tun_flags = tun_flags;
+
+ /* For the tunnel types on the top of IPsec, the tp_src and tp_dst of
+ * the upper tunnel are used.
+ * E.g: GRE over IPSEC, the tp_src and tp_port are zero.
+ */
+ tun_info->tunnel.tp_src = tp_src;
+ tun_info->tunnel.tp_dst = tp_dst;
+
+ /* Clear struct padding. */
+ if (sizeof(tun_info->tunnel) != OVS_TUNNEL_KEY_SIZE)
+ memset((unsigned char *)&tun_info->tunnel + OVS_TUNNEL_KEY_SIZE,
+ 0, sizeof(tun_info->tunnel) - OVS_TUNNEL_KEY_SIZE);
+
+ tun_info->options = opts;
+ tun_info->options_len = opts_len;
+}
+
+static inline void ovs_flow_tun_info_init(struct ovs_tunnel_info *tun_info,
+ const struct iphdr *iph,
+ __be16 tp_src,
+ __be16 tp_dst,
+ __be64 tun_id,
+ __be16 tun_flags,
+ const struct geneve_opt *opts,
+ u8 opts_len)
{
- tun_key->tun_id = tun_id;
- tun_key->ipv4_src = iph->saddr;
- tun_key->ipv4_dst = iph->daddr;
- tun_key->ipv4_tos = iph->tos;
- tun_key->ipv4_ttl = iph->ttl;
- tun_key->tun_flags = tun_flags;
-
- /* clear struct padding. */
- memset((unsigned char *) tun_key + OVS_TUNNEL_KEY_SIZE, 0,
- sizeof(*tun_key) - OVS_TUNNEL_KEY_SIZE);
+ __ovs_flow_tun_info_init(tun_info, iph->saddr, iph->daddr,
+ iph->tos, iph->ttl,
+ tp_src, tp_dst,
+ tun_id, tun_flags,
+ opts, opts_len);
}
+#define OVS_SW_FLOW_KEY_METADATA_SIZE \
+ (offsetof(struct sw_flow_key, recirc_id) + \
+ FIELD_SIZEOF(struct sw_flow_key, recirc_id))
+
struct sw_flow_key {
+ u8 tun_opts[255];
+ u8 tun_opts_len;
struct ovs_key_ipv4_tunnel tun_key; /* Encapsulating tunnel key. */
struct {
u32 priority; /* Packet QoS priority. */
u32 skb_mark; /* SKB mark. */
u16 in_port; /* Input switch port (or DP_MAX_PORTS). */
- } phy;
+ } __packed phy; /* Safe when right after 'tun_key'. */
+ u32 ovs_flow_hash; /* Datapath computed hash value. */
+ u32 recirc_id; /* Recirculation ID. */
struct {
u8 src[ETH_ALEN]; /* Ethernet source address. */
u8 dst[ETH_ALEN]; /* Ethernet destination address. */
__be16 tci; /* 0 if no VLAN, VLAN_TAG_PRESENT set otherwise. */
__be16 type; /* Ethernet frame type. */
} eth;
+ union {
+ struct {
+ __be32 top_lse; /* top label stack entry */
+ } mpls;
+ struct {
+ u8 proto; /* IP protocol or lower 8 bits of ARP opcode. */
+ u8 tos; /* IP ToS. */
+ u8 ttl; /* IP TTL/hop limit. */
+ u8 frag; /* One of OVS_FRAG_TYPE_*. */
+ } ip;
+ };
struct {
- u8 proto; /* IP protocol or lower 8 bits of ARP opcode. */
- u8 tos; /* IP ToS. */
- u8 ttl; /* IP TTL/hop limit. */
- u8 frag; /* One of OVS_FRAG_TYPE_*. */
- } ip;
+ __be16 src; /* TCP/UDP/SCTP source port. */
+ __be16 dst; /* TCP/UDP/SCTP destination port. */
+ __be16 flags; /* TCP flags. */
+ } tp;
union {
struct {
struct {
__be32 src; /* IP source address. */
__be32 dst; /* IP destination address. */
} addr;
- union {
- struct {
- __be16 src; /* TCP/UDP/SCTP source port. */
- __be16 dst; /* TCP/UDP/SCTP destination port. */
- __be16 flags; /* TCP flags. */
- } tp;
- struct {
- u8 sha[ETH_ALEN]; /* ARP source hardware address. */
- u8 tha[ETH_ALEN]; /* ARP target hardware address. */
- } arp;
- };
+ struct {
+ u8 sha[ETH_ALEN]; /* ARP source hardware address. */
+ u8 tha[ETH_ALEN]; /* ARP target hardware address. */
+ } arp;
} ipv4;
struct {
struct {
struct in6_addr dst; /* IPv6 destination address. */
} addr;
__be32 label; /* IPv6 flow label. */
- struct {
- __be16 src; /* TCP/UDP/SCTP source port. */
- __be16 dst; /* TCP/UDP/SCTP destination port. */
- __be16 flags; /* TCP flags. */
- } tp;
struct {
struct in6_addr target; /* ND target address. */
u8 sll[ETH_ALEN]; /* ND source link layer address. */
struct sw_flow_mask {
int ref_count;
struct rcu_head rcu;
- struct list_head list;
struct sw_flow_key_range range;
struct sw_flow_key key;
};
struct rcu_head rcu;
struct hlist_node hash_node[2];
u32 hash;
-
+ int stats_last_writer; /* NUMA-node id of the last writer on
+ * 'stats[0]'.
+ */
struct sw_flow_key key;
struct sw_flow_key unmasked_key;
struct sw_flow_mask *mask;
struct sw_flow_actions __rcu *sf_acts;
- struct flow_stats __percpu *stats;
+ struct flow_stats __rcu *stats[]; /* One for each NUMA node. First one
+ * is allocated at flow creation time,
+ * the rest are allocated on demand
+ * while holding the 'stats[0].lock'.
+ */
};
struct arp_eth_header {
unsigned char ar_tip[4]; /* target IP address */
} __packed;
-void ovs_flow_stats_update(struct sw_flow *flow, struct sk_buff *skb);
-void ovs_flow_stats_get(struct sw_flow *flow, struct ovs_flow_stats *stats,
+void ovs_flow_stats_update(struct sw_flow *, __be16 tcp_flags,
+ const struct sk_buff *);
+void ovs_flow_stats_get(const struct sw_flow *, struct ovs_flow_stats *,
unsigned long *used, __be16 *tcp_flags);
-void ovs_flow_stats_clear(struct sw_flow *flow);
+void ovs_flow_stats_clear(struct sw_flow *);
u64 ovs_flow_used_time(unsigned long flow_jiffies);
-int ovs_flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *);
+/* Update the non-metadata part of the flow key using skb. */
+int ovs_flow_key_update(struct sk_buff *skb, struct sw_flow_key *key);
+int ovs_flow_key_extract(const struct ovs_tunnel_info *tun_info,
+ struct sk_buff *skb,
+ struct sw_flow_key *key);
+/* Extract key from packet coming from userspace. */
+int ovs_flow_key_extract_userspace(const struct nlattr *attr,
+ struct sk_buff *skb,
+ struct sw_flow_key *key, bool log);
#endif /* flow.h */
projects / cascardo / ovs.git / blobdiff