[NETLINK]: Make netlink_callback->done() optional
Most netlink families make no use of the done() callback, making
it optional gets rid of all unnecessary dummy implementations.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index c35336a..6996b7e 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -948,11 +948,6 @@
[XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_flush_policy },
};
-static int xfrm_done(struct netlink_callback *cb)
-{
- return 0;
-}
-
static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
{
struct rtattr *xfrma[XFRMA_MAX];
@@ -990,8 +985,7 @@
goto err_einval;
if ((*errp = netlink_dump_start(xfrm_nl, skb, nlh,
- link->dump,
- xfrm_done)) != 0) {
+ link->dump, NULL)) != 0) {
return -1;
}
rlen = NLMSG_ALIGN(nlh->nlmsg_len);