net/xfrm/xfrm_iptfs.c:650: warning: No description found for return value of 'iptfs_input'
net/xfrm/xfrm_iptfs.c:897: warning: No description found for return value of 'iptfs_drop_timer'
net/xfrm/xfrm_iptfs.c:650: warning: No description found for return value of 'iptfs_input'
net/xfrm/xfrm_iptfs.c:981: warning: No description found for return value of 'iptfs_drop_timer'