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>

1 files changed, 26 insertions, 102 deletions

diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index 212fbf7510c4..098fd1db6a23 100644
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -33,14 +33,6 @@
 #include <net/inet_ecn.h>
 
 struct sk_buff;
-struct sw_flow_mask;
-struct flow_table;
-
-struct sw_flow_actions {
-        struct rcu_head rcu;
-        u32 actions_len;
-        struct nlattr actions[];
-};
 
 /* Used to memset ovs_key_ipv4_tunnel padding. */
 #define OVS_TUNNEL_KEY_SIZE                                     \
@@ -127,6 +119,31 @@ struct sw_flow_key {
         };
 } __aligned(BITS_PER_LONG/8); /* Ensure that we can do comparisons as longs. */
 
+struct sw_flow_key_range {
+        size_t start;
+        size_t end;
+};
+
+struct sw_flow_mask {
+        int ref_count;
+        struct rcu_head rcu;
+        struct list_head list;
+        struct sw_flow_key_range range;
+        struct sw_flow_key key;
+};
+
+struct sw_flow_match {
+        struct sw_flow_key *key;
+        struct sw_flow_key_range range;
+        struct sw_flow_mask *mask;
+};
+
+struct sw_flow_actions {
+        struct rcu_head rcu;
+        u32 actions_len;
+        struct nlattr actions[];
+};
+
 struct sw_flow {
         struct rcu_head rcu;
         struct hlist_node hash_node[2];
@@ -144,20 +161,6 @@ struct sw_flow {
         u8 tcp_flags;           /* Union of seen TCP flags. */
 };
 
-struct sw_flow_key_range {
-        size_t start;
-        size_t end;
-};
-
-struct sw_flow_match {
-        struct sw_flow_key *key;
-        struct sw_flow_key_range range;
-        struct sw_flow_mask *mask;
-};
-
-void ovs_match_init(struct sw_flow_match *match,
-                struct sw_flow_key *key, struct sw_flow_mask *mask);
-
 struct arp_eth_header {
         __be16      ar_hrd;     /* format of hardware address   */
         __be16      ar_pro;     /* format of protocol address   */
@@ -172,88 +175,9 @@ struct arp_eth_header {
         unsigned char       ar_tip[4];          /* target IP address        */
 } __packed;
 
-int ovs_flow_init(void);
-void ovs_flow_exit(void);
-
-struct sw_flow *ovs_flow_alloc(void);
-void ovs_flow_deferred_free(struct sw_flow *);
-void ovs_flow_free(struct sw_flow *, bool deferred);
-
-struct sw_flow_actions *ovs_flow_actions_alloc(int actions_len);
-void ovs_flow_deferred_free_acts(struct sw_flow_actions *);
-
-int ovs_flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *);
 void ovs_flow_used(struct sw_flow *, struct sk_buff *);
 u64 ovs_flow_used_time(unsigned long flow_jiffies);
-int ovs_flow_to_nlattrs(const struct sw_flow_key *,
-                const struct sw_flow_key *, struct sk_buff *);
-int ovs_match_from_nlattrs(struct sw_flow_match *match,
-                      const struct nlattr *,
-                      const struct nlattr *);
-int ovs_flow_metadata_from_nlattrs(struct sw_flow *flow,
-                const struct nlattr *attr);
 
-#define MAX_ACTIONS_BUFSIZE    (32 * 1024)
-#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;
-};
-
-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 sw_flow *ovs_flow_lookup(struct flow_table *,
-                                const struct sw_flow_key *);
-struct sw_flow *ovs_flow_lookup_unmasked_key(struct flow_table *table,
-                                    struct sw_flow_match *match);
-
-void ovs_flow_tbl_destroy(struct flow_table *table, bool deferred);
-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_insert(struct flow_table *table, struct sw_flow *flow);
-void ovs_flow_remove(struct flow_table *table, struct sw_flow *flow);
-
-struct sw_flow *ovs_flow_dump_next(struct flow_table *table, u32 *bucket, u32 *idx);
-extern const int ovs_key_lens[OVS_KEY_ATTR_MAX + 1];
-int ovs_ipv4_tun_from_nlattr(const struct nlattr *attr,
-                             struct sw_flow_match *match, bool is_mask);
-int ovs_ipv4_tun_to_nlattr(struct sk_buff *skb,
-                           const struct ovs_key_ipv4_tunnel *tun_key,
-                           const struct ovs_key_ipv4_tunnel *output);
-
-bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow,
-                const struct sw_flow_key *key, int key_end);
-
-struct sw_flow_mask {
-        int ref_count;
-        struct rcu_head rcu;
-        struct list_head list;
-        struct sw_flow_key_range range;
-        struct sw_flow_key key;
-};
+int ovs_flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *);
 
-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_key_mask(struct sw_flow_key *dst, const struct sw_flow_key *src,
-                       const struct sw_flow_mask *mask);
 #endif /* flow.h */