X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Fflow.h;h=5c232791ada53e96b846f0ca9c45daf7cf195e3b;hb=ac1e8ee90853b5d248ea5d2d0f63ce0b5686a5b7;hp=80a5b66b1018a84aa193d92b9009c5c9f30ac1f6;hpb=401eeb92d32ac0fa07f34f5b803d67b8032b6403;p=openvswitch

diff --git a/datapath/flow.h b/datapath/flow.h
index 80a5b66b..5c232791 100644
--- a/datapath/flow.h
+++ b/datapath/flow.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2010 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011 Nicira Networks.
  * Distributed under the terms of the GNU GPL version 2.
  *
  * Significant portions of this file may be copied from parts of the Linux
@@ -10,11 +10,12 @@
 #define FLOW_H 1
 
 #include <linux/kernel.h>
+#include <linux/netlink.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
 #include <linux/rcupdate.h>
-#include <linux/gfp.h>
 #include <linux/if_ether.h>
+#include <linux/in6.h>
 #include <linux/jiffies.h>
 #include <linux/time.h>
 
@@ -25,16 +26,45 @@ struct sk_buff;
 
 struct sw_flow_actions {
 	struct rcu_head rcu;
-	unsigned int n_actions;
-	union odp_action actions[];
+	u32 actions_len;
+	struct nlattr actions[];
+};
+
+struct sw_flow_key {
+	__be64	tun_id;     /* Encapsulating tunnel ID. */
+	union {
+		struct {
+			__be32	ipv4_src;	 /* IPv4 source address. */
+			__be32	ipv4_dst;	 /* IPv4 destination address. */
+		};
+		struct {
+			struct in6_addr	ipv6_src; /* IPv6 source address. */
+			struct in6_addr ipv6_dst; /* IPv6 source address. */
+		};
+	};
+	struct in6_addr	nd_target; /* IPv6 ND target address. */
+	u16	in_port;    /* Input switch port. */
+	__be16	dl_tci;	    /* 0 if no VLAN, VLAN_TAG_PRESENT set otherwise. */
+	__be16	dl_type;    /* Ethernet frame type. */
+	__be16	tp_src;	    /* TCP/UDP source port. */
+	__be16	tp_dst;	    /* TCP/UDP destination port. */
+	u8	dl_src[ETH_ALEN]; /* Ethernet source address. */
+	u8	dl_dst[ETH_ALEN]; /* Ethernet destination address. */
+	u8	nw_proto;   /* IP protocol or lower 8 bits of ARP opcode. */
+	u8	nw_tos;	    /* IP ToS (DSCP field, 6 bits). */
+	u8	arp_sha[ETH_ALEN]; /* ARP/ND source hardware address. */
+	u8	arp_tha[ETH_ALEN]; /* ARP/ND target hardware address. */
 };
 
 struct sw_flow {
 	struct rcu_head rcu;
 	struct tbl_node tbl_node;
 
-	struct odp_flow_key key;
-	struct sw_flow_actions *sf_acts;
+	struct sw_flow_key key;
+	struct sw_flow_actions __rcu *sf_acts;
+
+	atomic_t refcnt;
+	bool dead;
 
 	spinlock_t lock;	/* Lock for values below. */
 	unsigned long used;	/* Last used time (in jiffies). */
@@ -56,22 +86,48 @@ struct arp_eth_header
 	unsigned char       ar_sip[4];		/* sender IP address        */
 	unsigned char       ar_tha[ETH_ALEN];	/* target hardware address  */
 	unsigned char       ar_tip[4];		/* target IP address        */
-} __attribute__((packed));
+} __packed;
 
-extern struct kmem_cache *flow_cache;
+int flow_init(void);
+void flow_exit(void);
 
-struct sw_flow_actions *flow_actions_alloc(size_t n_actions);
+struct sw_flow *flow_alloc(void);
 void flow_deferred_free(struct sw_flow *);
+void flow_free_tbl(struct tbl_node *);
+
+struct sw_flow_actions *flow_actions_alloc(const struct nlattr *);
 void flow_deferred_free_acts(struct sw_flow_actions *);
-int flow_extract(struct sk_buff *, u16 in_port, struct odp_flow_key *);
+
+void flow_hold(struct sw_flow *);
+void flow_put(struct sw_flow *);
+
+int flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *, bool *is_frag);
 void flow_used(struct sw_flow *, struct sk_buff *);
+u64 flow_used_time(unsigned long flow_jiffies);
 
-u32 flow_hash(const struct odp_flow_key *key);
+u32 flow_hash(const struct sw_flow_key *);
 int flow_cmp(const struct tbl_node *, void *target);
-void flow_free_tbl(struct tbl_node *);
 
-int flow_init(void);
-void flow_exit(void);
+/* Upper bound on the length of a nlattr-formatted flow key.  The longest
+ * nlattr-formatted flow key would be:
+ *
+ *                         struct  pad  nl hdr  total
+ *                         ------  ---  ------  -----
+ *  ODP_KEY_ATTR_TUN_ID        8    --     4     12
+ *  ODP_KEY_ATTR_IN_PORT       4    --     4      8
+ *  ODP_KEY_ATTR_ETHERNET     12    --     4     16
+ *  ODP_KEY_ATTR_8021Q         4    --     4      8
+ *  ODP_KEY_ATTR_ETHERTYPE     2     2     4      8
+ *  ODP_KEY_ATTR_IPV6         34     2     4     40
+ *  ODP_KEY_ATTR_ICMPV6        2     2     4      8
+ *  ODP_KEY_ATTR_ND           28    --     4     32
+ *  -------------------------------------------------
+ *  total                                       132
+ */
+#define FLOW_BUFSIZE 132
+
+int flow_to_nlattrs(const struct sw_flow_key *, struct sk_buff *);
+int flow_from_nlattrs(struct sw_flow_key *swkey, const struct nlattr *);
 
 static inline struct sw_flow *flow_cast(const struct tbl_node *node)
 {