net/xfrm/xfrm_iptfs.c:903: warning: No description found for return value of 'iptfs_input'
net/xfrm/xfrm_iptfs.c:1255: warning: No description found for return value of 'iptfs_drop_timer'
net/xfrm/xfrm_iptfs.c:1636: warning: No description found for return value of 'iptfs_drop_timer'