net/ipv6: Remove ip_idx arg to in6_dump_addrs

ip_idx is always 0 going into in6_dump_addrs; it is passed as a pointer
to save the last good index into cb. Since cb is already argument to
in6_dump_addrs, just save the value there.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e39c284..6b65984 100644 (file)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4955,14 +4955,13 @@ static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
 
 /* called with rcu_read_lock() */
 static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
-                         struct netlink_callback *cb,
-                         int s_ip_idx, int *p_ip_idx,
+                         struct netlink_callback *cb, int s_ip_idx,
                          struct inet6_fill_args *fillargs)
 {
        struct ifmcaddr6 *ifmca;
        struct ifacaddr6 *ifaca;
+       int ip_idx = 0;
        int err = 1;
-       int ip_idx = *p_ip_idx;
 
        read_lock_bh(&idev->lock);
        switch (fillargs->type) {
@@ -5012,7 +5011,7 @@ next:
                break;
        }
        read_unlock_bh(&idev->lock);
-       *p_ip_idx = ip_idx;
+       cb->args[2] = ip_idx;
        return err;
 }
 
@@ -5081,16 +5080,15 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
        };
        struct net *net = sock_net(skb->sk);
        struct net *tgt_net = net;
+       int idx, s_idx, s_ip_idx;
        int h, s_h;
-       int idx, ip_idx;
-       int s_idx, s_ip_idx;
        struct net_device *dev;
        struct inet6_dev *idev;
        struct hlist_head *head;
 
        s_h = cb->args[0];
        s_idx = idx = cb->args[1];
-       s_ip_idx = ip_idx = cb->args[2];
+       s_ip_idx = cb->args[2];
 
        if (cb->strict_check) {
                int err;
@@ -5111,12 +5109,11 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
                                goto cont;
                        if (h > s_h || idx > s_idx)
                                s_ip_idx = 0;
-                       ip_idx = 0;
                        idev = __in6_dev_get(dev);
                        if (!idev)
                                goto cont;
 
-                       if (in6_dump_addrs(idev, skb, cb, s_ip_idx, &ip_idx,
+                       if (in6_dump_addrs(idev, skb, cb, s_ip_idx,
                                           &fillargs) < 0)
                                goto done;
 cont:
@@ -5127,7 +5124,6 @@ done:
        rcu_read_unlock();
        cb->args[0] = h;
        cb->args[1] = idx;
-       cb->args[2] = ip_idx;
        if (fillargs.netnsid >= 0)
                put_net(tgt_net);