-/* Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <stdint.h>
#include "hmapx.h"
-#include "ofproto/ofproto-provider.h"
-#include "tag.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 ofproto_packet_in;
+struct ofport_dpif;
+struct dpif_backer;
+struct OVS_LOCKABLE rule_dpif;
+struct OVS_LOCKABLE group_dpif;
+
+/* For lock annotation below only. */
+extern struct ovs_rwlock xlate_rwlock;
+
+/* 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. */
-#define MAX_MIRRORS 32
-typedef uint32_t mirror_mask_t;
-#define MIRROR_MASK_C(X) UINT32_C(X)
-BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
-
-/* Number of implemented OpenFlow tables. */
-enum { N_TABLES = 255 };
-enum { TBL_INTERNAL = N_TABLES - 1 }; /* Used for internal hidden rules. */
-BUILD_ASSERT_DECL(N_TABLES >= 2 && N_TABLES <= 255);
-
-struct rule_dpif {
- struct rule up;
-
- /* These statistics:
- *
- * - Do include packets and bytes from facets that have been deleted or
- * whose own statistics have been folded into the rule.
- *
- * - Do include packets and bytes sent "by hand" that were accounted to
- * the rule without any facet being involved (this is a rare corner
- * case in rule_execute()).
- *
- * - Do not include packet or bytes that can be obtained from any facet's
- * packet_count or byte_count member or that can be obtained from the
- * datapath by, e.g., dpif_flow_get() for any subfacet.
- */
- uint64_t packet_count; /* Number of packets received. */
- uint64_t byte_count; /* Number of bytes received. */
-
- tag_type tag; /* Caches rule_calculate_tag() result. */
-
- struct list facets; /* List of "struct facet"s. */
-};
-
-/* Extra information about a classifier table.
- * Currently used just for optimized flow revalidation. */
-struct table_dpif {
- /* If either of these is nonnull, then this table has a form that allows
- * flows to be tagged to avoid revalidating most flows for the most common
- * kinds of flow table changes. */
- struct cls_table *catchall_table; /* Table that wildcards all fields. */
- struct cls_table *other_table; /* Table with any other wildcard set. */
- uint32_t basis; /* Keeps each table's tags separate. */
-};
-
-struct ofproto_dpif {
- struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
- struct ofproto up;
- struct dpif_backer *backer;
-
- /* Special OpenFlow rules. */
- struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
- struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */
- struct rule_dpif *drop_frags_rule; /* Used in OFPC_FRAG_DROP mode. */
-
- /* Bridging. */
- struct netflow *netflow;
- struct dpif_sflow *sflow;
- struct dpif_ipfix *ipfix;
- struct hmap bundles; /* Contains "struct ofbundle"s. */
- struct mac_learning *ml;
- struct ofmirror *mirrors[MAX_MIRRORS];
- bool has_mirrors;
- bool has_bonded_bundles;
-
- /* Facets. */
- struct classifier facets; /* Contains 'struct facet's. */
- long long int consistency_rl;
-
- /* Revalidation. */
- struct table_dpif tables[N_TABLES];
-
- /* Support for debugging async flow mods. */
- struct list completions;
-
- struct netdev_stats stats; /* To account packets generated and consumed in
- * userspace. */
-
- /* Spanning tree. */
- struct stp *stp;
- long long int stp_last_tick;
-
- /* VLAN splinters. */
- struct hmap realdev_vid_map; /* (realdev,vid) -> vlandev. */
- struct hmap vlandev_map; /* vlandev -> (realdev,vid). */
-
- /* Ports. */
- struct sset ports; /* Set of standard port names. */
- struct sset ghost_ports; /* Ports with no datapath port. */
- struct sset port_poll_set; /* Queued names for port_poll() reply. */
- int port_poll_errno; /* Last errno for port_poll() reply. */
-
- /* Per ofproto's dpif stats. */
- uint64_t n_hit;
- uint64_t n_missed;
-};
-
-struct ofport_dpif {
- struct hmap_node odp_port_node; /* In dpif_backer's "odp_to_ofport_map". */
- struct ofport up;
-
- odp_port_t odp_port;
- struct ofbundle *bundle; /* Bundle that contains this port, if any. */
- struct list bundle_node; /* In struct ofbundle's "ports" list. */
- struct cfm *cfm; /* Connectivity Fault Management, if any. */
- struct bfd *bfd; /* BFD, if any. */
- tag_type tag; /* Tag associated with this port. */
- bool may_enable; /* May be enabled in bonds. */
- long long int carrier_seq; /* Carrier status changes. */
- struct tnl_port *tnl_port; /* Tunnel handle, or null. */
- struct ofport_dpif *peer; /* Peer if patch port. */
-
- /* Spanning tree. */
- struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
- enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
- long long int stp_state_entered;
-
- struct hmap priorities; /* Map of attached 'priority_to_dscp's. */
-
- /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
- *
- * This is deprecated. It is only for compatibility with broken device
- * drivers in old versions of Linux that do not properly support VLANs when
- * VLAN devices are not used. When broken device drivers are no longer in
- * widespread use, we will delete these interfaces. */
- ofp_port_t realdev_ofp_port;
- int vlandev_vid;
-};
-
-struct ofbundle {
- struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
- struct ofproto_dpif *ofproto; /* Owning ofproto. */
- void *aux; /* Key supplied by ofproto's client. */
- char *name; /* Identifier for log messages. */
-
- /* Configuration. */
- struct list ports; /* Contains "struct ofport"s. */
- enum port_vlan_mode vlan_mode; /* VLAN mode */
- int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
- unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
- * NULL if all VLANs are trunked. */
- struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
- struct bond *bond; /* Nonnull iff more than one port. */
- bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
-
- /* Status. */
- bool floodable; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
-
- /* Port mirroring info. */
- mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
- mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
- mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
-};
-
-struct ofmirror {
- struct ofproto_dpif *ofproto; /* Owning ofproto. */
- size_t idx; /* In ofproto's "mirrors" array. */
- void *aux; /* Key supplied by ofproto's client. */
- char *name; /* Identifier for log messages. */
-
- /* Selection criteria. */
- struct hmapx srcs; /* Contains "struct ofbundle *"s. */
- struct hmapx dsts; /* Contains "struct ofbundle *"s. */
- unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
-
- /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
- struct ofbundle *out; /* Output port or NULL. */
- int out_vlan; /* Output VLAN or -1. */
- mirror_mask_t dup_mirrors; /* Bitmap of mirrors with the same output. */
-
- /* Counters. */
- int64_t packet_count; /* Number of packets sent. */
- int64_t byte_count; /* Number of bytes sent. */
-};
-
-static inline struct rule_dpif *rule_dpif_cast(const struct rule *rule)
-{
- return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
-}
-
-static inline struct ofproto_dpif *
-ofproto_dpif_cast(const struct ofproto *ofproto)
-{
- ovs_assert(ofproto->ofproto_class == &ofproto_dpif_class);
- return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
-}
+size_t ofproto_dpif_get_max_mpls_depth(const struct ofproto_dpif *);
-static inline struct ofport_dpif *
-ofbundle_get_a_port(const struct ofbundle *bundle)
-{
- return CONTAINER_OF(list_front(&bundle->ports), struct ofport_dpif,
- bundle_node);
-}
+void rule_dpif_lookup(struct ofproto_dpif *, const struct flow *,
+ struct flow_wildcards *, struct rule_dpif **rule);
-static inline int
-mirror_mask_ffs(mirror_mask_t mask)
-{
- BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
- return ffs(mask);
-}
+bool rule_dpif_lookup_in_table(struct ofproto_dpif *, const struct flow *,
+ struct flow_wildcards *, uint8_t table_id,
+ struct rule_dpif **rule);
-struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *,
- ofp_port_t ofp_port);
+void rule_dpif_ref(struct rule_dpif *);
+void rule_dpif_unref(struct rule_dpif *);
-struct ofport_dpif *get_odp_port(const struct ofproto_dpif *,
- odp_port_t odp_port);
+void rule_dpif_credit_stats(struct rule_dpif *rule ,
+ const struct dpif_flow_stats *);
-odp_port_t ofp_port_to_odp_port(const struct ofproto_dpif *,
- ofp_port_t ofp_port);
+bool rule_dpif_is_fail_open(const struct rule_dpif *);
+bool rule_dpif_is_table_miss(const struct rule_dpif *);
-struct rule_dpif *rule_dpif_lookup_in_table(struct ofproto_dpif *,
- const struct flow *,
- struct flow_wildcards *,
- uint8_t table_id);
+struct rule_actions *rule_dpif_get_actions(const struct rule_dpif *);
-tag_type rule_calculate_tag(const struct flow *flow, const struct minimask *,
- uint32_t secret);
+ovs_be64 rule_dpif_get_flow_cookie(const struct rule_dpif *rule);
-struct rule_dpif *rule_dpif_miss_rule(struct ofproto_dpif *ofproto,
- const struct flow *);
+void rule_dpif_reduce_timeouts(struct rule_dpif *rule, uint16_t idle_timeout,
+ uint16_t hard_timeout);
-void rule_credit_stats(struct rule_dpif *, const struct dpif_flow_stats *);
+void choose_miss_rule(enum ofputil_port_config,
+ struct rule_dpif *miss_rule,
+ struct rule_dpif *no_packet_in_rule,
+ struct rule_dpif **rule);
-void ofproto_trace(struct ofproto_dpif *, const struct flow *,
- const struct ofpbuf *packet, struct ds *);
+bool group_dpif_lookup(struct ofproto_dpif *ofproto, uint32_t group_id,
+ struct group_dpif **group);
-size_t put_userspace_action(const struct ofproto_dpif *,
- struct ofpbuf *odp_actions, const struct flow *,
- const union user_action_cookie *,
- const size_t cookie_size);
+void group_dpif_release(struct group_dpif *group);
-bool stp_should_process_flow(const struct flow *, struct flow_wildcards *);
-void stp_process_packet(const struct ofport_dpif *,
- const struct ofpbuf *packet);
+void group_dpif_get_buckets(const struct group_dpif *group,
+ const struct list **buckets);
+enum ofp11_group_type group_dpif_get_type(const struct group_dpif *group);
+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 ofproto_dpif_dscp_from_priority(const struct ofport_dpif *,
- uint32_t priority, uint8_t *dscp);
-int ofproto_dpif_queue_to_priority(const struct ofproto_dpif *,
- uint32_t queue_id, uint32_t *priority);
-
+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 *)
+ OVS_EXCLUDED(xlate_rwlock);
+void ofproto_dpif_send_packet_in(struct ofproto_dpif *,
+ struct ofproto_packet_in *);
+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 */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff