diff options
Diffstat (limited to 'net/openvswitch/flow_table.h')
| -rw-r--r-- | net/openvswitch/flow_table.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/net/openvswitch/flow_table.h b/net/openvswitch/flow_table.h new file mode 100644 index 00000000000..5918bff7f3f --- /dev/null +++ b/net/openvswitch/flow_table.h @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2007-2013 Nicira, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA + */ + +#ifndef FLOW_TABLE_H +#define FLOW_TABLE_H 1 + +#include <linux/kernel.h> +#include <linux/netlink.h> +#include <linux/openvswitch.h> +#include <linux/spinlock.h> +#include <linux/types.h> +#include <linux/rcupdate.h> +#include <linux/if_ether.h> +#include <linux/in6.h> +#include <linux/jiffies.h> +#include <linux/time.h> +#include <linux/flex_array.h> + +#include <net/inet_ecn.h> +#include <net/ip_tunnels.h> + +#include "flow.h" + +struct table_instance { + struct flex_array *buckets; + unsigned int n_buckets; + struct rcu_head rcu; + int node_ver; + u32 hash_seed; + bool keep_flows; +}; + +struct flow_table { + struct table_instance __rcu *ti; + struct list_head mask_list; + unsigned long last_rehash; + unsigned int count; +}; + +extern struct kmem_cache *flow_stats_cache; + +int ovs_flow_init(void); +void ovs_flow_exit(void); + +struct sw_flow *ovs_flow_alloc(void); +void ovs_flow_free(struct sw_flow *, bool deferred); + +int ovs_flow_tbl_init(struct flow_table *); +int ovs_flow_tbl_count(struct flow_table *table); +void ovs_flow_tbl_destroy(struct flow_table *table, bool deferred); +int ovs_flow_tbl_flush(struct flow_table *flow_table); + +int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow, + struct sw_flow_mask *mask); +void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow); +int ovs_flow_tbl_num_masks(const struct flow_table *table); +struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table, + u32 *bucket, u32 *idx); +struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *, + const struct sw_flow_key *, + u32 *n_mask_hit); +struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *, + const struct sw_flow_key *); +struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl, + struct sw_flow_match *match); +bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow, + struct sw_flow_match *match); + +void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src, + const struct sw_flow_mask *mask); +#endif /* flow_table.h */ |