/*
- * Copyright (c) 2007-2014 Nicira, Inc.
+ * Copyright (c) 2007-2015 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/netdevice.h>
#include <linux/skbuff.h>
#include <linux/u64_stats_sync.h>
+#include <net/net_namespace.h>
+#include <net/ip_tunnels.h>
#include "compat.h"
#include "flow.h"
#include "flow_table.h"
-#include "vlan.h"
-#include "vport.h"
+#include "meter.h"
+#include "vport-internal_dev.h"
-#define DP_MAX_PORTS USHRT_MAX
-#define DP_VPORT_HASH_BUCKETS 1024
-
-#define SAMPLE_ACTION_DEPTH 3
+#define DP_MAX_PORTS USHRT_MAX
+#define DP_VPORT_HASH_BUCKETS 1024
/**
* struct dp_stats_percpu - per-cpu packet processing statistics for a given
u64 n_missed;
u64 n_lost;
u64 n_mask_hit;
- struct u64_stats_sync sync;
+ struct u64_stats_sync syncp;
};
/**
* ovs_mutex and RCU.
* @stats_percpu: Per-CPU datapath statistics.
* @net: Reference to net namespace.
+ * @max_headroom: the maximum headroom of all vports in this datapath; it will
+ * be used by all the internal vports in this dp.
*
* Context: See the comment on locking at the top of datapath.c for additional
* locking information.
/* Stats. */
struct dp_stats_percpu __percpu *stats_percpu;
-#ifdef CONFIG_NET_NS
/* Network namespace ref. */
- struct net *net;
-#endif
+ possible_net_t net;
u32 user_features;
+
+ u32 max_headroom;
+
+ /* Switch meters. */
+ struct hlist_head *meters;
};
/**
* struct ovs_skb_cb - OVS data in skb CB
- * @flow: The flow associated with this packet. May be %NULL if no flow.
- * @pkt_key: The flow information extracted from the packet. Must be nonnull.
- * @tun_key: Key for the tunnel that encapsulated this packet. NULL if the
* @input_vport: The original vport packet came in on. This value is cached
* when a packet is received by OVS.
+ * @mru: The maximum received fragement size; 0 if the packet is not
+ * fragmented.
+ * @acts_origlen: The netlink size of the flow actions applied to this skb.
+ * @cutlen: The number of bytes from the packet end to be removed.
*/
struct ovs_skb_cb {
- struct sw_flow *flow;
- struct sw_flow_key *pkt_key;
- struct ovs_tunnel_info *tun_info;
- struct vport *input_vport;
+ struct vport *input_vport;
+ u16 mru;
+ u16 acts_origlen;
+ u32 cutlen;
};
#define OVS_CB(skb) ((struct ovs_skb_cb *)(skb)->cb)
/**
* struct dp_upcall - metadata to include with a packet to send to userspace
* @cmd: One of %OVS_PACKET_CMD_*.
- * @key: Becomes %OVS_PACKET_ATTR_KEY. Must be nonnull.
* @userdata: If nonnull, its variable-length value is passed to userspace as
* %OVS_PACKET_ATTR_USERDATA.
- * @portid: Netlink PID to which packet should be sent. If @portid is 0 then no
- * packet is sent and the packet is accounted in the datapath's @n_lost
+ * @portid: Netlink portid to which packet should be sent. If @portid is 0
+ * then no packet is sent and the packet is accounted in the datapath's @n_lost
* counter.
+ * @egress_tun_info: If nonnull, becomes %OVS_PACKET_ATTR_EGRESS_TUN_KEY.
+ * @mru: If not zero, Maximum received IP fragment size.
*/
struct dp_upcall_info {
- u8 cmd;
- const struct sw_flow_key *key;
+ struct ip_tunnel_info *egress_tun_info;
const struct nlattr *userdata;
+ const struct nlattr *actions;
+ int actions_len;
u32 portid;
+ u8 cmd;
+ u16 mru;
};
/**
* struct ovs_net - Per net-namespace data for ovs.
* @dps: List of datapaths to enable dumping them all out.
* Protected by genl_mutex.
- * @vport_net: Per network namespace data for vport.
*/
struct ovs_net {
struct list_head dps;
- struct vport_net vport_net;
struct work_struct dp_notify_work;
+#if IS_ENABLED(CONFIG_NETFILTER_CONNCOUNT)
+ struct ovs_ct_limit_info *ct_limit_info;
+#endif
+
+ /* Module reference for configuring conntrack. */
+ bool xt_label;
+
+#ifdef HAVE_INET_FRAG_LRU_MOVE
+ struct net *net;
+ struct netns_frags ipv4_frags;
+ struct netns_frags nf_frags;
+#endif
+};
+
+/**
+ * enum ovs_pkt_hash_types - hash info to include with a packet
+ * to send to userspace.
+ * @OVS_PACKET_HASH_SW_BIT: indicates hash was computed in software stack.
+ * @OVS_PACKET_HASH_L4_BIT: indicates hash is a canonical 4-tuple hash
+ * over transport ports.
+ */
+enum ovs_pkt_hash_types {
+ OVS_PACKET_HASH_SW_BIT = (1ULL << 32),
+ OVS_PACKET_HASH_L4_BIT = (1ULL << 33),
};
-extern int ovs_net_id;
+extern unsigned int ovs_net_id;
void ovs_lock(void);
void ovs_unlock(void);
#define lockdep_ovsl_is_held() 1
#endif
-#define ASSERT_OVSL() WARN_ON(unlikely(!lockdep_ovsl_is_held()))
+#define ASSERT_OVSL() WARN_ON(!lockdep_ovsl_is_held())
#define ovsl_dereference(p) \
rcu_dereference_protected(p, lockdep_ovsl_is_held())
#define rcu_dereference_ovsl(p) \
rcu_dereference_check(p, lockdep_ovsl_is_held())
-static inline struct net *ovs_dp_get_net(struct datapath *dp)
+static inline struct net *ovs_dp_get_net(const struct datapath *dp)
{
- return read_pnet(&dp->net);
+ return rpl_read_pnet(&dp->net);
}
static inline void ovs_dp_set_net(struct datapath *dp, struct net *net)
{
- write_pnet(&dp->net, net);
+ rpl_write_pnet(&dp->net, net);
}
struct vport *ovs_lookup_vport(const struct datapath *dp, u16 port_no);
return ovs_lookup_vport(dp, port_no);
}
+/* Must be called with rcu_read_lock. */
+static inline struct datapath *get_dp_rcu(struct net *net, int dp_ifindex)
+{
+ struct net_device *dev = dev_get_by_index_rcu(net, dp_ifindex);
+
+ if (dev) {
+ struct vport *vport = ovs_internal_dev_get_vport(dev);
+
+ if (vport)
+ return vport->dp;
+ }
+
+ return NULL;
+}
+
+/* The caller must hold either ovs_mutex or rcu_read_lock to keep the
+ * returned dp pointer valid.
+ */
+static inline struct datapath *get_dp(struct net *net, int dp_ifindex)
+{
+ struct datapath *dp;
+
+ WARN_ON_ONCE(!rcu_read_lock_held() && !lockdep_ovsl_is_held());
+ rcu_read_lock();
+ dp = get_dp_rcu(net, dp_ifindex);
+ rcu_read_unlock();
+
+ return dp;
+}
+
extern struct notifier_block ovs_dp_device_notifier;
extern struct genl_family dp_vport_genl_family;
-extern struct genl_multicast_group ovs_dp_vport_multicast_group;
+extern const struct genl_multicast_group ovs_dp_vport_multicast_group;
-void ovs_dp_process_received_packet(struct sk_buff *);
-void ovs_dp_process_packet_with_key(struct sk_buff *,
- struct sw_flow_key *pkt_key, bool recirc);
+DECLARE_STATIC_KEY_FALSE(tc_recirc_sharing_support);
+
+void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key);
void ovs_dp_detach_port(struct vport *);
int ovs_dp_upcall(struct datapath *, struct sk_buff *,
- const struct dp_upcall_info *);
+ const struct sw_flow_key *, const struct dp_upcall_info *,
+ uint32_t cutlen);
const char *ovs_dp_name(const struct datapath *dp);
-struct sk_buff *ovs_vport_cmd_build_info(struct vport *, u32 portid, u32 seq,
- u8 cmd);
+struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, struct net *net,
+ u32 portid, u32 seq, u8 cmd);
+
+int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb,
+ const struct sw_flow_actions *, struct sw_flow_key *);
-int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb, bool recirc);
void ovs_dp_notify_wq(struct work_struct *work);
-#define OVS_NLERR(fmt, ...) \
+int action_fifos_init(void);
+void action_fifos_exit(void);
+
+/* 'KEY' must not have any bits set outside of the 'MASK' */
+#define OVS_MASKED(OLD, KEY, MASK) ((KEY) | ((OLD) & ~(MASK)))
+#define OVS_SET_MASKED(OLD, KEY, MASK) ((OLD) = OVS_MASKED(OLD, KEY, MASK))
+
+#define OVS_NLERR(logging_allowed, fmt, ...) \
do { \
- if (net_ratelimit()) \
- pr_info("netlink: " fmt, ##__VA_ARGS__); \
+ if (logging_allowed && net_ratelimit()) \
+ pr_info("netlink: " fmt "\n", ##__VA_ARGS__); \
} while (0)
#endif /* datapath.h */