Justin Pettit
d1d2f3f321
- Remove group_id from flow entries. - Show priority when print flow mod messages.
107 lines
4.4 KiB
C
107 lines
4.4 KiB
C
/* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
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* Junior University
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*
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* We are making the OpenFlow specification and associated documentation
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* (Software) available for public use and benefit with the expectation
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* that others will use, modify and enhance the Software and contribute
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* those enhancements back to the community. However, since we would
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* like to make the Software available for broadest use, with as few
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* restrictions as possible permission is hereby granted, free of
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* charge, to any person obtaining a copy of this Software to deal in
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* the Software under the copyrights without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* The name and trademarks of copyright holder(s) may NOT be used in
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* advertising or publicity pertaining to the Software or any
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* derivatives without specific, written prior permission.
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*/
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/* Individual switching tables. Generally grouped together in a chain (see
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* chain.h). */
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#ifndef TABLE_H
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#define TABLE_H 1
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#include <stdint.h>
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struct sw_flow;
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struct sw_flow_key;
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struct list;
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/* Iterator through the flows stored in a table. */
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struct swt_iterator {
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struct sw_flow *flow; /* Current flow, for use by client. */
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void *private;
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};
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/* Table statistics. */
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struct sw_table_stats {
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const char *name; /* Human-readable name. */
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unsigned long int n_flows; /* Number of active flows. */
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unsigned long int max_flows; /* Flow capacity. */
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};
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/* A single table of flows. */
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struct sw_table {
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/* Searches 'table' for a flow matching 'key', which must not have any
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* wildcard fields. Returns the flow if successful, a null pointer
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* otherwise. */
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struct sw_flow *(*lookup)(struct sw_table *table,
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const struct sw_flow_key *key);
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/* Inserts 'flow' into 'table', replacing any duplicate flow. Returns
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* 0 if successful or a negative error. Error can be due to an
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* over-capacity table or because the flow is not one of the kind that
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* the table accepts.
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*
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* If successful, 'flow' becomes owned by 'table', otherwise it is
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* retained by the caller. */
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int (*insert)(struct sw_table *table, struct sw_flow *flow);
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/* Deletes from 'table' any and all flows that match 'key' from
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* 'table'. If 'strict' set, wildcards must match. Returns the
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* number of flows that were deleted. */
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int (*delete)(struct sw_table *table, const struct sw_flow_key *key,
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uint16_t priority, int strict);
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/* Performs timeout processing on all the flow entries in 'table'.
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* Appends all the flow entries removed from 'table' to 'deleted' for the
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* caller to free. */
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void (*timeout)(struct sw_table *table, struct list *deleted);
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/* Destroys 'table', which must not have any users. */
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void (*destroy)(struct sw_table *table);
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int (*iterator)(struct sw_table *, struct swt_iterator *);
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void (*iterator_next)(struct swt_iterator *);
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void (*iterator_destroy)(struct swt_iterator *);
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/* Dumps statistics for 'table' into 'stats'. */
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void (*stats)(struct sw_table *table, struct sw_table_stats *stats);
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};
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struct sw_table *table_mac_create(unsigned int n_buckets,
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unsigned int max_flows);
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struct sw_table *table_hash_create(unsigned int polynomial,
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unsigned int n_buckets);
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struct sw_table *table_hash2_create(unsigned int poly0, unsigned int buckets0,
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unsigned int poly1, unsigned int buckets1);
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struct sw_table *table_linear_create(unsigned int max_flows);
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#endif /* table.h */
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