Tatsuya Yabe
6778bd8cdf
Set of modifications and additions to establish a platform for implementing a hardware table in userspace. Modules in skeleton directory is used as a template for creating hardware dependent libraries.
101 lines
4.2 KiB
C
101 lines
4.2 KiB
C
/* Copyright (c) 2008, 2009 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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#ifndef SWITCH_FLOW_H
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#define SWITCH_FLOW_H 1
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#include <time.h>
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#include "openflow/openflow.h"
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#include "flow.h"
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#include "list.h"
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struct ofp_match;
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/* Identification data for a flow. */
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struct sw_flow_key {
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struct flow flow; /* Flow data (in network byte order). */
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uint32_t wildcards; /* Wildcard fields (in host byte order). */
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uint32_t nw_src_mask; /* 1-bit in each significant nw_src bit. */
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uint32_t nw_dst_mask; /* 1-bit in each significant nw_dst bit. */
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};
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struct sw_flow_actions {
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size_t actions_len;
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struct ofp_action_header actions[0];
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};
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struct sw_flow {
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struct sw_flow_key key;
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uint64_t cookie; /* Opaque controller-issued identifier. */
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uint16_t priority; /* Only used on entries with wildcards. */
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uint16_t idle_timeout; /* Idle time before discarding (seconds). */
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uint16_t hard_timeout; /* Hard expiration time (seconds) */
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uint64_t used; /* Last used time. */
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uint64_t created; /* When the flow was created. */
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uint64_t packet_count; /* Number of packets seen. */
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uint64_t byte_count; /* Number of bytes seen. */
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uint8_t reason; /* Reason flow removed (one of OFPRR_*). */
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uint8_t send_flow_rem; /* Send a flow removed to the controller */
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uint8_t emerg_flow; /* Emergency flow indicator */
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struct sw_flow_actions *sf_acts;
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/* Private to table implementations. */
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struct list node;
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struct list iter_node;
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unsigned long int serial;
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void *private; /* Cookie for tables */
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};
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int flow_matches_1wild(const struct sw_flow_key *, const struct sw_flow_key *);
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int flow_matches_2wild(const struct sw_flow_key *, const struct sw_flow_key *);
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int flow_matches_desc(const struct sw_flow_key *, const struct sw_flow_key *,
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int);
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int flow_matches_2desc(const struct sw_flow_key *, const struct sw_flow_key *,
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int);
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int flow_has_out_port(struct sw_flow *flow, uint16_t out_port);
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struct sw_flow *flow_alloc(size_t);
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void flow_setup_actions(struct sw_flow *, const struct ofp_action_header *, int);
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void flow_free(struct sw_flow *);
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void flow_replace_acts(struct sw_flow *, const struct ofp_action_header *,
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size_t);
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void flow_extract_match(struct sw_flow_key* to, const struct ofp_match* from);
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void print_flow(const struct sw_flow_key *);
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bool flow_timeout(struct sw_flow *flow);
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void flow_used(struct sw_flow *flow, struct ofpbuf *buffer);
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#endif /* switch-flow.h */
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