Yiannis Yiakoumis
a47208dc76
detection handler for table maintanance Add a CHECK_OVERLAP flag to flow mods which requires the switch to do the (potentially more costly) check that there doesn't already exist a conflicting flow with the same priority. If there is one, the mod fails and an error code is returned. Flow expiry: Record OFPFF_SEND_FLOW_EXP flag in user data path
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
#ifndef CHAIN_H
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#define CHAIN_H 1
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#include <linux/types.h>
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struct sw_flow;
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struct sw_flow_key;
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struct ofp_action_header;
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struct datapath;
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#define TABLE_LINEAR_MAX_FLOWS 100
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#define TABLE_HASH_MAX_FLOWS 65536
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/* Set of tables chained together in sequence from cheap to expensive. */
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#define CHAIN_MAX_TABLES 4
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struct sw_chain {
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int n_tables;
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struct sw_table *tables[CHAIN_MAX_TABLES];
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struct sw_table *emerg_table;
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struct datapath *dp;
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struct module *owner;
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};
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struct sw_chain *chain_create(struct datapath *);
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struct sw_flow *chain_lookup(struct sw_chain *, const struct sw_flow_key *,
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int);
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int chain_insert(struct sw_chain *, struct sw_flow *, int);
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int chain_modify(struct sw_chain *, const struct sw_flow_key *,
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uint16_t, int, const struct ofp_action_header *, size_t, int);
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int chain_has_conflict(struct sw_chain *, const struct sw_flow_key *,
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uint16_t, int);
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int chain_delete(struct sw_chain *, const struct sw_flow_key *, uint16_t,
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uint16_t, int, int);
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int chain_timeout(struct sw_chain *);
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void chain_destroy(struct sw_chain *);
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int chain_set_hw_hook(struct sw_table *(*create_hw_table)(void),
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struct module *owner);
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void chain_clear_hw_hook(void);
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#endif /* chain.h */
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