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authorPravin B Shelar <pshelar@nicira.com>2013-10-04 05:16:47 +0400
committerJesse Gross <jesse@nicira.com>2013-10-04 05:16:47 +0400
commite64457191a259537bbbfaebeba9a8043786af96f (patch)
tree579f47d3124b69a94b07878d65d27f71c4f7c9c5 /net/openvswitch/flow_table.h
parentf0627cfa24389cab25c67bb7ca902912216a8a2d (diff)
downloadlinux-e64457191a259537bbbfaebeba9a8043786af96f.tar.xz
openvswitch: Restructure datapath.c and flow.c
Over the time datapath.c and flow.c has became pretty large files. Following patch restructures functionality of component into three different components: flow.c: contains flow extract. flow_netlink.c: netlink flow api. flow_table.c: flow table api. This patch restructures code without changing logic. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
Diffstat (limited to 'net/openvswitch/flow_table.h')
-rw-r--r--net/openvswitch/flow_table.h91
1 files changed, 91 insertions, 0 deletions
diff --git a/net/openvswitch/flow_table.h b/net/openvswitch/flow_table.h
new file mode 100644
index 000000000000..d7a114457cde
--- /dev/null
+++ b/net/openvswitch/flow_table.h
@@ -0,0 +1,91 @@
+/*
+ * 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"
+
+#define TBL_MIN_BUCKETS 1024
+
+struct flow_table {
+ struct flex_array *buckets;
+ unsigned int count, n_buckets;
+ struct rcu_head rcu;
+ struct list_head *mask_list;
+ int node_ver;
+ u32 hash_seed;
+ bool keep_flows;
+};
+
+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);
+
+static inline int ovs_flow_tbl_count(struct flow_table *table)
+{
+ return table->count;
+}
+
+static inline int ovs_flow_tbl_need_to_expand(struct flow_table *table)
+{
+ return (table->count > table->n_buckets);
+}
+
+struct flow_table *ovs_flow_tbl_alloc(int new_size);
+struct flow_table *ovs_flow_tbl_expand(struct flow_table *table);
+struct flow_table *ovs_flow_tbl_rehash(struct flow_table *table);
+void ovs_flow_tbl_destroy(struct flow_table *table, bool deferred);
+
+void ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow);
+void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
+struct sw_flow *ovs_flow_tbl_dump_next(struct flow_table *table,
+ u32 *bucket, u32 *idx);
+struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
+ const struct sw_flow_key *);
+
+bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow,
+ struct sw_flow_match *match);
+
+struct sw_flow_mask *ovs_sw_flow_mask_alloc(void);
+void ovs_sw_flow_mask_add_ref(struct sw_flow_mask *);
+void ovs_sw_flow_mask_del_ref(struct sw_flow_mask *, bool deferred);
+void ovs_sw_flow_mask_insert(struct flow_table *, struct sw_flow_mask *);
+struct sw_flow_mask *ovs_sw_flow_mask_find(const struct flow_table *,
+ const struct sw_flow_mask *);
+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 */