X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Fflow.h;h=be734532c2082e0a80db2f22c868d08b43c787c0;hb=fca2ffb3a05ed8f04121781a56c75e80611b6f8d;hp=29a1ac47bcc76612b686b815079adbf1bfd5bafe;hpb=6bfafa55fbd78fba244bb9e62081781187a45932;p=openvswitch

diff --git a/datapath/flow.h b/datapath/flow.h
index 29a1ac47..be734532 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
@@ -10,10 +10,11 @@
 #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/jiffies.h>
 #include <linux/time.h>
 
@@ -24,18 +25,34 @@ 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. */
+	__be32	nw_src;	    /* IP source address. */
+	__be32	nw_dst;	    /* IP destination 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). */
 };
 
 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;
 
-	u8 ip_tos;		/* IP TOS value. */
+	atomic_t refcnt;
+	bool dead;
 
 	spinlock_t lock;	/* Lock for values below. */
 	unsigned long used;	/* Last used time (in jiffies). */
@@ -44,20 +61,52 @@ struct sw_flow {
 	u8 tcp_flags;		/* Union of seen TCP flags. */
 };
 
-extern struct kmem_cache *flow_cache;
+struct arp_eth_header
+{
+	__be16      ar_hrd;	/* format of hardware address   */
+	__be16      ar_pro;	/* format of protocol address   */
+	unsigned char   ar_hln;	/* length of hardware address   */
+	unsigned char   ar_pln;	/* length of protocol address   */
+	__be16      ar_op;	/* ARP opcode (command)     */
+
+	/* Ethernet+IPv4 specific members. */
+	unsigned char       ar_sha[ETH_ALEN];	/* sender hardware address  */
+	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        */
+} __packed;
+
+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);
 
-struct sw_flow *flow_cast(const struct tbl_node *);
-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);
+/* By my calculations currently the longest valid nlattr-formatted flow key is
+ * 80 bytes long, so this leaves some safety margin.
+ */
+#define FLOW_BUFSIZE 96
+
+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)
+{
+	return container_of(node, struct sw_flow, tbl_node);
+}
 
 #endif /* flow.h */