clatd: Use the TUN_NOCHECKSUM flag for the tun device

This is needed to handle cases when the packet socket receives
a GRO coalesced packet which will not have a valid TCP checksum.
TUN_NOCHECKSUM is used only when the checksum has already been
verified prior to this and GRO is being used.

Change-Id: I1409967523152bb7620b4881526e78e8c222cc72

1 files changed, 2 insertions, 0 deletions

diff --git a/config.h b/config.h
index e31a81d..82a91be 100644
--- a/config.h
+++ b/config.h
@@ -39,6 +39,8 @@ struct clat_config {
 
 extern struct clat_config Global_Clatd_Config;
 
+extern int rx_checksum_offloaded;
+
 int read_config(const char *file, const char *uplink_interface, const char *plat_prefix,
         unsigned net_id);
 void config_generate_local_ipv6_subnet(struct in6_addr *interface_ip);