X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Factions.h;h=9dfca36594d6738f483604ef99cf8c9ffa61b468;hb=9e15c889f7a94db2decefd93dd6b3f77fb1b7bc6;hp=04bc65444494ab4350e0a8450ebfe65f51a4dc08;hpb=f2459fe7d91c4c325dfaa3ed18f56200b63ae27e;p=openvswitch

diff --git a/datapath/actions.h b/datapath/actions.h
index 04bc6544..9dfca365 100644
--- a/datapath/actions.h
+++ b/datapath/actions.h
@@ -10,6 +10,7 @@
 #define ACTIONS_H 1
 
 #include <linux/gfp.h>
+#include <linux/skbuff.h>
 
 struct datapath;
 struct sk_buff;
@@ -21,4 +22,22 @@ int execute_actions(struct datapath *dp, struct sk_buff *skb,
 		    const union odp_action *, int n_actions,
 		    gfp_t gfp);
 
+static inline void
+set_skb_csum_bits(const struct sk_buff *old_skb, struct sk_buff *new_skb)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
+	/* Before 2.6.24 these fields were not copied when
+	 * doing an skb_copy_expand. */
+	new_skb->ip_summed = old_skb->ip_summed;
+	new_skb->csum = old_skb->csum;
+#endif
+#if defined(CONFIG_XEN) && defined(HAVE_PROTO_DATA_VALID)
+	/* These fields are copied in skb_clone but not in
+	 * skb_copy or related functions.  We need to manually
+	 * copy them over here. */
+	new_skb->proto_data_valid = old_skb->proto_data_valid;
+	new_skb->proto_csum_blank = old_skb->proto_csum_blank;
+#endif
+}
+
 #endif /* actions.h */