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 534c7af..80a5b66 100644 (file)
--- a/datapath/flow.h
+++ b/datapath/flow.h
@@ -14,6 +14,7 @@
 #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>
 
@@ -42,6 +43,21 @@ struct sw_flow {
        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);