Add Nicira extension to OpenFlow for dropping spoofed ARP packets.

[sliver-openvswitch.git] / datapath / flow.h

diff --git a/datapath/flow.h b/datapath/flow.h
index 9704489..80a5b66 100644 (file)
--- a/datapath/flow.h
+++ b/datapath/flow.h
@@ -14,6 +14,8 @@
 #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>
 
 #include "openvswitch/datapath-protocol.h"
@@ -34,16 +36,28 @@ struct sw_flow {
        struct odp_flow_key key;
        struct sw_flow_actions *sf_acts;
 
-       struct timespec used;   /* Last used time. */
-
-       u8 ip_tos;              /* IP TOS value. */
-
        spinlock_t lock;        /* Lock for values below. */
+       unsigned long used;     /* Last used time (in jiffies). */
        u64 packet_count;       /* Number of packets matched. */
        u64 byte_count;         /* Number of bytes matched. */
        u8 tcp_flags;           /* Union of seen TCP flags. */
 };
 
+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        */
+} __attribute__((packed));
+
 extern struct kmem_cache *flow_cache;
 
 struct sw_flow_actions *flow_actions_alloc(size_t n_actions);
@@ -52,7 +66,6 @@ void flow_deferred_free_acts(struct sw_flow_actions *);
 int flow_extract(struct sk_buff *, u16 in_port, struct odp_flow_key *);
 void flow_used(struct sw_flow *, struct sk_buff *);
 
-struct sw_flow *flow_cast(const struct tbl_node *);
 u32 flow_hash(const struct odp_flow_key *key);
 int flow_cmp(const struct tbl_node *, void *target);
 void flow_free_tbl(struct tbl_node *);
@@ -60,4 +73,9 @@ void flow_free_tbl(struct tbl_node *);
 int flow_init(void);
 void flow_exit(void);
 
+static inline struct sw_flow *flow_cast(const struct tbl_node *node)
+{
+       return container_of(node, struct sw_flow, tbl_node);
+}
+
 #endif /* flow.h */