net/xfrm/xfrm_iptfs.c:655: warning: No description found for return value of 'iptfs_input'
net/xfrm/xfrm_iptfs.c:902: warning: No description found for return value of 'iptfs_drop_timer'
net/xfrm/xfrm_iptfs.c:655: warning: No description found for return value of 'iptfs_input'
net/xfrm/xfrm_iptfs.c:986: warning: No description found for return value of 'iptfs_drop_timer'