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/* Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License. */
#ifndef OFPROTO_DPIF_H
#define OFPROTO_DPIF_H 1
#include <stdint.h>
#include "hmapx.h"
#include "odp-util.h"
#include "ofp-util.h"
#include "ovs-thread.h"
#include "timer.h"
#include "util.h"
#include "ovs-thread.h"
union user_action_cookie;
struct dpif_flow_stats;
struct ofproto_dpif;
struct ofport_dpif;
struct dpif_backer;
struct OVS_LOCKABLE rule_dpif;
/* Ofproto-dpif -- DPIF based ofproto implementation.
*
* Ofproto-dpif provides an ofproto implementation for those platforms which
* implement the netdev and dpif interface defined in netdev.h and dpif.h. The
* most important of which is the Linux Kernel Module (dpif-linux), but
* alternatives are supported such as a userspace only implementation
* (dpif-netdev), and a dummy implementation used for unit testing.
*
* Ofproto-dpif is divided into three major chunks.
*
* - ofproto-dpif.c
* The main ofproto-dpif module is responsible for implementing the
* provider interface, installing and removing datapath flows, maintaining
* packet statistics, running protocols (BFD, LACP, STP, etc), and
* configuring relevant submodules.
*
* - ofproto-dpif-upcall.c
* Ofproto-dpif-upcall is responsible for retrieving upcalls from the kernel,
* processing miss upcalls, and handing more complex ones up to the main
* ofproto-dpif module. Miss upcall processing boils down to figuring out
* what each packet's actions are, executing them (i.e. asking the kernel to
* forward it), and handing it up to ofproto-dpif to decided whether or not
* to install a kernel flow.
*
* - ofproto-dpif-xlate.c
* Ofproto-dpif-xlate is responsible for translating translating OpenFlow
* actions into datapath actions. */
void rule_dpif_lookup(struct ofproto_dpif *, const struct flow *,
struct flow_wildcards *, struct rule_dpif **rule);
bool rule_dpif_lookup_in_table(struct ofproto_dpif *, const struct flow *,
struct flow_wildcards *, uint8_t table_id,
struct rule_dpif **rule);
void rule_dpif_ref(struct rule_dpif *);
void rule_dpif_unref(struct rule_dpif *);
void rule_dpif_credit_stats(struct rule_dpif *rule ,
const struct dpif_flow_stats *);
bool rule_dpif_fail_open(const struct rule_dpif *rule);
struct rule_actions *rule_dpif_get_actions(const struct rule_dpif *);
ovs_be64 rule_dpif_get_flow_cookie(const struct rule_dpif *rule);
void rule_dpif_reduce_timeouts(struct rule_dpif *rule, uint16_t idle_timeout,
uint16_t hard_timeout);
void choose_miss_rule(enum ofputil_port_config,
struct rule_dpif *miss_rule,
struct rule_dpif *no_packet_in_rule,
struct rule_dpif **rule);
bool ofproto_has_vlan_splinters(const struct ofproto_dpif *);
ofp_port_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
ofp_port_t realdev_ofp_port,
ovs_be16 vlan_tci);
bool vsp_adjust_flow(const struct ofproto_dpif *, struct flow *);
int ofproto_dpif_execute_actions(struct ofproto_dpif *, const struct flow *,
struct rule_dpif *, const struct ofpact *,
size_t ofpacts_len, struct ofpbuf *);
void ofproto_dpif_send_packet_in(struct ofproto_dpif *,
struct ofputil_packet_in *pin);
int ofproto_dpif_send_packet(const struct ofport_dpif *, struct ofpbuf *);
void ofproto_dpif_flow_mod(struct ofproto_dpif *, struct ofputil_flow_mod *);
struct ofport_dpif *odp_port_to_ofport(const struct dpif_backer *, odp_port_t);
#endif /* ofproto-dpif.h */
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