[NETLINK]: Remove unused dst_pid field in netlink_skb_parms

The destination PID is passed directly to netlink_unicast()
respectively netlink_multicast().

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netlink.h

@@ -141,7 +141,6 @@ struct netlink_skb_parms
 {
 	struct ucred		creds;		/* Skb credentials	*/
 	__u32			pid;
-	__u32			dst_pid;
 	__u32			dst_group;
 	kernel_cap_t		eff_cap;
 	__u32			loginuid;	/* Login (audit) uid */

net/decnet/dn_route.c

@@ -1592,8 +1592,6 @@ int dn_cache_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void *arg)
 	if (rtm->rtm_flags & RTM_F_NOTIFY)
 		rt->rt_flags |= RTCF_NOTIFY;
 
-	NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
-
 	err = dn_rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, RTM_NEWROUTE, 0, 0);
 
 	if (err == 0)

net/ipv4/fib_frontend.c

@@ -811,7 +811,6 @@ static void nl_fib_input(struct sock *sk, int len)
 	
 	pid = nlh->nlmsg_pid;           /*pid of sending process */
 	NETLINK_CB(skb).pid = 0;         /* from kernel */
-	NETLINK_CB(skb).dst_pid = pid;
 	NETLINK_CB(skb).dst_group = 0;  /* unicast */
 	netlink_unicast(sk, skb, pid, MSG_DONTWAIT);
 }    

net/ipv4/netfilter/ip_conntrack_netlink.c

@@ -743,7 +743,6 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb,
 		ip_conntrack_put(ct);
 		return -ENOMEM;
 	}
-	NETLINK_CB(skb2).dst_pid = NETLINK_CB(skb).pid;
 
 	err = ctnetlink_fill_info(skb2, NETLINK_CB(skb).pid, nlh->nlmsg_seq, 
 				  IPCTNL_MSG_CT_NEW, 1, ct);
@@ -1273,8 +1272,7 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
 	skb2 = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
 	if (!skb2)
 		goto out;
-	NETLINK_CB(skb2).dst_pid = NETLINK_CB(skb).pid;
-	
+
 	err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).pid, 
 				      nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW,
 				      1, exp);

net/netfilter/nf_conntrack_netlink.c

@@ -752,7 +752,6 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb,
 		nf_ct_put(ct);
 		return -ENOMEM;
 	}
-	NETLINK_CB(skb2).dst_pid = NETLINK_CB(skb).pid;
 
 	err = ctnetlink_fill_info(skb2, NETLINK_CB(skb).pid, nlh->nlmsg_seq, 
 				  IPCTNL_MSG_CT_NEW, 1, ct);
@@ -1300,8 +1299,7 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
 	skb2 = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
 	if (!skb2)
 		goto out;
-	NETLINK_CB(skb2).dst_pid = NETLINK_CB(skb).pid;
-	
+
 	err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).pid, 
 				      nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW,
 				      1, exp);

net/netlink/af_netlink.c

@@ -1153,7 +1153,6 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
 		goto out;
 
 	NETLINK_CB(skb).pid	= nlk->pid;
-	NETLINK_CB(skb).dst_pid = dst_pid;
 	NETLINK_CB(skb).dst_group = dst_group;
 	NETLINK_CB(skb).loginuid = audit_get_loginuid(current->audit_context);
 	selinux_get_task_sid(current, &(NETLINK_CB(skb).sid));

net/xfrm/xfrm_user.c

@@ -650,7 +650,6 @@ static struct sk_buff *xfrm_state_netlink(struct sk_buff *in_skb,
 	if (!skb)
 		return ERR_PTR(-ENOMEM);
 
-	NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
 	info.in_skb = in_skb;
 	info.out_skb = skb;
 	info.nlmsg_seq = seq;
@@ -1168,7 +1167,6 @@ static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb,
 	if (!skb)
 		return ERR_PTR(-ENOMEM);
 
-	NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
 	info.in_skb = in_skb;
 	info.out_skb = skb;
 	info.nlmsg_seq = seq;