-/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
+/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 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 "fail-open.h"
#include "hmapx.h"
#include "odp-util.h"
#include "ofp-util.h"
#include "util.h"
#include "ovs-thread.h"
+/* Priority for internal rules created to handle recirculation */
+#define RECIRC_RULE_PRIORITY 20
+
union user_action_cookie;
struct dpif_flow_stats;
struct ofproto;
+struct ofproto_async_msg;
struct ofproto_dpif;
-struct ofproto_packet_in;
struct ofport_dpif;
struct dpif_backer;
struct OVS_LOCKABLE rule_dpif;
struct OVS_LOCKABLE group_dpif;
-enum rule_dpif_lookup_verdict {
- RULE_DPIF_LOOKUP_VERDICT_MATCH, /* A match occurred. */
- RULE_DPIF_LOOKUP_VERDICT_CONTROLLER, /* A miss occurred and the packet
- * should be passed to
- * the controller. */
- RULE_DPIF_LOOKUP_VERDICT_DROP, /* A miss occurred and the packet
- * should be dropped. */
- RULE_DPIF_LOOKUP_VERDICT_DEFAULT, /* A miss occurred and the packet
- * should handled by the default
- * miss behaviour.
- * For pre-OF1.3 it should be
- * forwarded to the controller.
- * For OF1.3+ it should be
- * dropped. */
-};
-
-/* For lock annotation below only. */
-extern struct ovs_rwlock xlate_rwlock;
+/* 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);
/* Ofproto-dpif -- DPIF based ofproto implementation.
*
* to install a kernel flow.
*
* - ofproto-dpif-xlate.c
- * Ofproto-dpif-xlate is responsible for translating translating OpenFlow
- * actions into datapath actions. */
+ * Ofproto-dpif-xlate is responsible for translating OpenFlow actions into
+ * datapath actions. */
+
+/* Stores the various features which the corresponding backer supports. */
+struct dpif_backer_support {
+ /* True if the datapath supports variable-length
+ * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions.
+ * False if the datapath supports only 8-byte (or shorter) userdata. */
+ bool variable_length_userdata;
-size_t ofproto_dpif_get_max_mpls_depth(const struct ofproto_dpif *);
-bool ofproto_dpif_get_enable_recirc(const struct ofproto_dpif *);
+ /* True if the datapath supports masked data in OVS_ACTION_ATTR_SET
+ * actions. */
+ bool masked_set_action;
-uint8_t rule_dpif_lookup(struct ofproto_dpif *, struct flow *,
- struct flow_wildcards *, struct rule_dpif **rule);
+ /* True if the datapath supports tnl_push and pop actions. */
+ bool tnl_push_pop;
+
+ /* True if the datapath supports OVS_FLOW_ATTR_UFID. */
+ bool ufid;
+
+ /* Each member represents support for related OVS_KEY_ATTR_* fields. */
+ struct odp_support odp;
+};
-enum rule_dpif_lookup_verdict rule_dpif_lookup_from_table(struct ofproto_dpif *,
- const struct flow *,
- struct flow_wildcards *,
- bool force_controller_on_miss,
- uint8_t *table_id,
- struct rule_dpif **rule);
+bool ofproto_dpif_get_enable_ufid(const struct dpif_backer *backer);
+struct dpif_backer_support *ofproto_dpif_get_support(const struct ofproto_dpif *);
-void rule_dpif_ref(struct rule_dpif *);
-void rule_dpif_unref(struct rule_dpif *);
+cls_version_t ofproto_dpif_get_tables_version(struct ofproto_dpif *);
+
+struct rule_dpif *rule_dpif_lookup_from_table(struct ofproto_dpif *,
+ cls_version_t, struct flow *,
+ struct flow_wildcards *,
+ const struct dpif_flow_stats *,
+ uint8_t *table_id,
+ ofp_port_t in_port,
+ bool may_packet_in,
+ bool honor_table_miss);
+
+static inline void rule_dpif_ref(struct rule_dpif *);
+static inline void rule_dpif_unref(struct rule_dpif *);
void rule_dpif_credit_stats(struct rule_dpif *rule ,
const struct dpif_flow_stats *);
-bool rule_dpif_is_fail_open(const struct rule_dpif *);
-bool rule_dpif_is_table_miss(const struct rule_dpif *);
-bool rule_dpif_is_internal(const struct rule_dpif *);
+static inline bool rule_dpif_is_fail_open(const struct rule_dpif *);
+static inline bool rule_dpif_is_table_miss(const struct rule_dpif *);
+static inline bool rule_dpif_is_internal(const struct rule_dpif *);
+
uint8_t rule_dpif_get_table(const struct rule_dpif *);
-struct rule_actions *rule_dpif_get_actions(const struct rule_dpif *);
+bool table_is_internal(uint8_t table_id);
+
+const struct rule_actions *rule_dpif_get_actions(const struct rule_dpif *);
+void rule_set_recirc_id(struct rule *, uint32_t id);
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);
-
+void group_dpif_credit_stats(struct group_dpif *,
+ struct ofputil_bucket *,
+ const struct dpif_flow_stats *);
bool group_dpif_lookup(struct ofproto_dpif *ofproto, uint32_t group_id,
struct group_dpif **group);
-void group_dpif_release(struct group_dpif *group);
-
void group_dpif_get_buckets(const struct group_dpif *group,
- const struct list **buckets);
+ const struct ovs_list **buckets);
enum ofp11_group_type group_dpif_get_type(const struct group_dpif *group);
+const char *group_dpif_get_selection_method(const struct group_dpif *group);
+uint64_t group_dpif_get_selection_method_param(const struct group_dpif *group);
+const struct field_array *group_dpif_get_fields(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 vsp_adjust_flow(const struct ofproto_dpif *, struct flow *);
+bool vsp_adjust_flow(const struct ofproto_dpif *, struct flow *,
+ struct dp_packet *packet);
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 *);
+ size_t ofpacts_len, struct dp_packet *);
+int ofproto_dpif_execute_actions__(struct ofproto_dpif *, const struct flow *,
+ struct rule_dpif *, const struct ofpact *,
+ size_t ofpacts_len, int recurse,
+ int resubmits, struct dp_packet *);
+void ofproto_dpif_send_async_msg(struct ofproto_dpif *,
+ struct ofproto_async_msg *);
bool ofproto_dpif_wants_packet_in_on_miss(struct ofproto_dpif *);
-int ofproto_dpif_send_packet(const struct ofport_dpif *, struct ofpbuf *);
-void ofproto_dpif_flow_mod(struct ofproto_dpif *, struct ofputil_flow_mod *);
+int ofproto_dpif_send_packet(const struct ofport_dpif *, struct dp_packet *);
+void ofproto_dpif_flow_mod(struct ofproto_dpif *,
+ const struct ofputil_flow_mod *);
+struct rule_dpif *ofproto_dpif_refresh_rule(struct rule_dpif *);
struct ofport_dpif *odp_port_to_ofport(const struct dpif_backer *, odp_port_t);
+struct ofport_dpif *ofp_port_to_ofport(const struct ofproto_dpif *,
+ ofp_port_t);
-/*
- * Recirculation
- * =============
- *
- * Recirculation is a technique to allow a frame to re-enter the packet
- * processing path for one or multiple times to achieve more flexible packet
- * processing in the data path. MPLS handling and selecting bond slave port
- * of a bond ports.
- *
- * Data path and user space interface
- * -----------------------------------
- *
- * Two new fields, recirc_id and dp_hash, are added to the current flow data
- * structure. They are both of type uint32_t. In addition, a new action,
- * RECIRC, are added.
- *
- * The value recirc_id is used to distinguish a packet from multiple
- * iterations of recirculation. A packet initially received is considered of
- * having recirc_id of 0. Recirc_id is managed by the user space, opaque to
- * the data path.
- *
- * On the other hand, dp_hash can only be computed by the data path, opaque to
- * the user space. In fact, user space may not able to recompute the hash
- * value. The dp_hash value should be wildcarded when for a newly received
- * packet. RECIRC action specifies whether the hash is computed. If computed,
- * how many fields to be included in the hash computation. The computed hash
- * value is stored into the dp_hash field prior to recirculation.
- *
- * The RECIRC action computes and set the dp_hash field, set the recirc_id
- * field and then reprocess the packet as if it was received on the same input
- * port. RECIRC action works like a function call; actions listed behind the
- * RECIRC action will be executed after its execution. RECIRC action can be
- * nested, data path implementation limits the number of recirculation executed
- * to prevent unreasonable nesting depth or infinite loop.
- *
- * Both flow fields and the RECIRC action are exposed as open flow fields via
- * Nicira extensions.
- *
- * Post recirculation flow
- * ------------------------
- *
- * At the open flow level, post recirculation rules are always hidden from the
- * controller. They are installed in table 254 which is set up as a hidden
- * table during boot time. Those rules are managed by the local user space
- * program only.
- *
- * To speed up the classifier look up process, recirc_id is always reflected
- * into the metadata field, since recirc_id is required to be exactly matched.
- *
- * Classifier look up always starts with table 254. A post recirculation flow
- * lookup should find its hidden rule within this table. On the other hand, A
- * newly received packet should miss all post recirculation rules because its
- * recirc_id is zero, then hit a pre-installed lower priority rule to redirect
- * classifier to look up starting from table 0:
- *
- * * , actions=resubmit(,0)
- *
- * Post recirculation data path flows are managed like other data path flows.
- * They are created on demand. Miss handling, stats collection and revalidation
- * work the same way as regular flows.
- */
+bool ofproto_dpif_backer_enabled(struct dpif_backer* backer);
-uint32_t ofproto_dpif_alloc_recirc_id(struct ofproto_dpif *ofproto);
-void ofproto_dpif_free_recirc_id(struct ofproto_dpif *ofproto, uint32_t recirc_id);
int ofproto_dpif_add_internal_flow(struct ofproto_dpif *,
- struct match *, int priority,
+ const struct match *, int priority,
+ uint16_t idle_timeout,
const struct ofpbuf *ofpacts,
struct rule **rulep);
int ofproto_dpif_delete_internal_flow(struct ofproto_dpif *, struct match *,
int priority);
+const struct uuid *ofproto_dpif_get_uuid(const struct ofproto_dpif *);
+\f
+/* struct rule_dpif has struct rule as it's first member. */
+#define RULE_CAST(RULE) ((struct rule *)RULE)
+#define GROUP_CAST(GROUP) ((struct ofgroup *)GROUP)
+
+static inline struct group_dpif* group_dpif_ref(struct group_dpif *group)
+{
+ if (group) {
+ ofproto_group_ref(GROUP_CAST(group));
+ }
+ return group;
+}
+
+static inline void group_dpif_unref(struct group_dpif *group)
+{
+ if (group) {
+ ofproto_group_unref(GROUP_CAST(group));
+ }
+}
+
+static inline void rule_dpif_ref(struct rule_dpif *rule)
+{
+ if (rule) {
+ ofproto_rule_ref(RULE_CAST(rule));
+ }
+}
+
+static inline void rule_dpif_unref(struct rule_dpif *rule)
+{
+ if (rule) {
+ ofproto_rule_unref(RULE_CAST(rule));
+ }
+}
+
+static inline bool rule_dpif_is_fail_open(const struct rule_dpif *rule)
+{
+ return is_fail_open_rule(RULE_CAST(rule));
+}
+
+static inline bool rule_dpif_is_table_miss(const struct rule_dpif *rule)
+{
+ return rule_is_table_miss(RULE_CAST(rule));
+}
+
+/* Returns true if 'rule' is an internal rule, false otherwise. */
+static inline bool rule_dpif_is_internal(const struct rule_dpif *rule)
+{
+ return RULE_CAST(rule)->table_id == TBL_INTERNAL;
+}
+
+#undef RULE_CAST
+
+bool ovs_native_tunneling_is_on(struct ofproto_dpif *ofproto);
#endif /* ofproto-dpif.h */
projects / cascardo / ovs.git / blobdiff