-/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
+/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* 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;
+
+ /* Maximum number of MPLS label stack entries that the datapath supports
+ * in a match */
+ size_t max_mpls_depth;
+
+ /* True if the datapath supports masked data in OVS_ACTION_ATTR_SET
+ * actions. */
+ bool masked_set_action;
+
+ /* True if the datapath supports recirculation. */
+ bool recirc;
+
+ /* 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;
+};
+
size_t ofproto_dpif_get_max_mpls_depth(const struct ofproto_dpif *);
bool ofproto_dpif_get_enable_recirc(const struct ofproto_dpif *);
bool ofproto_dpif_get_enable_ufid(struct dpif_backer *backer);
-struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *, struct flow *,
- struct flow_wildcards *, bool take_ref,
- const struct dpif_flow_stats *,
- uint8_t *table_id);
+cls_version_t ofproto_dpif_get_tables_version(struct ofproto_dpif *);
struct rule_dpif *rule_dpif_lookup_from_table(struct ofproto_dpif *,
- struct flow *,
+ cls_version_t, struct flow *,
struct flow_wildcards *,
bool take_ref,
const struct dpif_flow_stats *,
bool may_packet_in,
bool honor_table_miss);
-/* If 'recirc_id' is set, starts looking up from internal table for
- * post recirculation flows or packets. Otherwise, starts from table 0. */
-static inline uint8_t
-rule_dpif_lookup_get_init_table_id(const struct flow *flow)
-{
- return flow->recirc_id ? TBL_INTERNAL : 0;
-}
-
static inline void rule_dpif_ref(struct rule_dpif *);
static inline void rule_dpif_unref(struct rule_dpif *);
bool table_is_internal(uint8_t table_id);
const struct rule_actions *rule_dpif_get_actions(const struct rule_dpif *);
-uint32_t rule_dpif_get_recirc_id(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);
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 *,
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 OpenFlow fields via
- * Nicira extensions.
- *
- * Post recirculation flow
- * ------------------------
- *
- * At the OpenFlow 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.
- *
- * If the bridge which originates the recirculation is different from the bridge
- * that receives the post recirculation packet (e.g. when patch port is used),
- * the packet will be processed directly by the recirculation bridge with
- * in_port set to OFPP_NONE. Admittedly, doing this limits the recirculation
- * bridge from matching on in_port of post recirculation packets, and will be
- * fixed in the near future.
- *
- * TODO: Always restore the correct in_port.
- *
- */
-
-struct ofproto_dpif *ofproto_dpif_recirc_get_ofproto(const struct dpif_backer *ofproto,
- uint32_t recirc_id);
-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 *,
const struct match *, int priority,
uint16_t idle_timeout,
projects / cascardo / ovs.git / blobdiff