/*
- * Copyright (c) 2009, 2010, 2011 Nicira Networks.
- * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007-2011 Nicira Networks.
*
- * Significant portions of this file may be copied from parts of the Linux
- * kernel, by Linus Torvalds and others.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
*/
-/* Interface exported by openvswitch_mod. */
-
#ifndef DATAPATH_H
#define DATAPATH_H 1
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/netdevice.h>
-#include <linux/seqlock.h>
#include <linux/skbuff.h>
+#include <linux/u64_stats_sync.h>
#include <linux/version.h>
#include "checksum.h"
struct vport;
-/* Mask for the priority bits in a vlan header. If we ever merge upstream
- * then this should go into include/linux/if_vlan.h. */
-#define VLAN_PCP_MASK 0xe000
-#define VLAN_PCP_SHIFT 13
-
#define DP_MAX_PORTS 1024
+#define SAMPLE_ACTION_DEPTH 3
/**
* struct dp_stats_percpu - per-cpu packet processing statistics for a given
* datapath.
- * @n_frags: Number of IP fragments processed by datapath.
* @n_hit: Number of received packets for which a matching flow was found in
* the flow table.
* @n_miss: Number of received packets that had no matching flow in the flow
* one of the datapath's queues).
*/
struct dp_stats_percpu {
- u64 n_frags;
u64 n_hit;
u64 n_missed;
u64 n_lost;
- seqcount_t seqlock;
+ struct u64_stats_sync sync;
};
/**
* @rcu: RCU callback head for deferred destruction.
* @list_node: Element in global 'dps' list.
* @ifobj: Represents /sys/class/net/<devname>/brif. Protected by RTNL.
- * @drop_frags: Drop all IP fragments if nonzero.
* @n_flows: Number of flows currently in flow table.
* @table: Current flow table. Protected by genl_lock and RCU.
* @ports: Map from port number to &struct vport. %OVSP_LOCAL port
* @port_list: List of all ports in @ports in arbitrary order. RTNL required
* to iterate or modify.
* @stats_percpu: Per-CPU datapath statistics.
- * @sflow_probability: Number of packets out of UINT_MAX to sample to the
- * %OVS_PACKET_CMD_SAMPLE multicast group, e.g. (@sflow_probability/UINT_MAX)
- * is the probability of sampling a given packet.
*
* Context: See the comment on locking at the top of datapath.c for additional
* locking information.
struct list_head list_node;
struct kobject ifobj;
- int drop_frags;
-
/* Flow table. */
struct flow_table __rcu *table;
/* Stats. */
struct dp_stats_percpu __percpu *stats_percpu;
-
- /* sFlow Sampling */
- unsigned int sflow_probability;
};
/**
* struct ovs_skb_cb - OVS data in skb CB
- * @vport: The datapath port on which the skb entered the switch.
* @flow: The flow associated with this packet. May be %NULL if no flow.
* @tun_id: ID of the tunnel that encapsulated this packet. It is 0 if the
* @ip_summed: Consistently stores L4 checksumming status across different
* before 2.6.27.
*/
struct ovs_skb_cb {
- struct vport *vport;
struct sw_flow *flow;
__be64 tun_id;
#ifdef NEED_CSUM_NORMALIZE
* 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: Becomes %OVS_PACKET_ATTR_USERDATA if nonzero.
- * @sample_pool: Becomes %OVS_PACKET_ATTR_SAMPLE_POOL if nonzero.
- * @actions: Becomes %OVS_PACKET_ATTR_ACTIONS if nonnull.
- * @actions_len: Number of bytes in @actions.
-*/
+ * @userdata: If nonnull, its u64 value is extracted and passed to userspace as
+ * %OVS_PACKET_ATTR_USERDATA.
+ * @pid: Netlink PID to which packet should be sent. If @pid is 0 then no
+ * packet is sent and the packet is accounted in the datapath's @n_lost
+ * counter.
+ */
struct dp_upcall_info {
u8 cmd;
const struct sw_flow_key *key;
- u64 userdata;
- u32 sample_pool;
- const struct nlattr *actions;
- u32 actions_len;
+ const struct nlattr *userdata;
+ u32 pid;
};
-extern struct notifier_block dp_device_notifier;
-extern struct genl_multicast_group dp_vport_multicast_group;
-extern int (*dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd);
+extern struct notifier_block ovs_dp_device_notifier;
+extern struct genl_multicast_group ovs_dp_vport_multicast_group;
+extern int (*ovs_dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd);
-void dp_process_received_packet(struct vport *, struct sk_buff *);
-void dp_detach_port(struct vport *);
-int dp_upcall(struct datapath *, struct sk_buff *, const struct dp_upcall_info *);
+void ovs_dp_process_received_packet(struct vport *, struct sk_buff *);
+void ovs_dp_detach_port(struct vport *);
+int ovs_dp_upcall(struct datapath *, struct sk_buff *,
+ const struct dp_upcall_info *);
-struct datapath *get_dp(int dp_idx);
-const char *dp_name(const struct datapath *dp);
+const char *ovs_dp_name(const struct datapath *dp);
struct sk_buff *ovs_vport_cmd_build_info(struct vport *, u32 pid, u32 seq,
u8 cmd);
+int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb);
#endif /* datapath.h */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff