net: netrom: use seq_hlist_foo() helpers

Simplify seq_file code.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 18 deletions

diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 71604c6613b5..a249127020a5 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1267,28 +1267,13 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 
 static void *nr_info_start(struct seq_file *seq, loff_t *pos)
 {
-        struct sock *s;
-        struct hlist_node *node;
-        int i = 1;
-
         spin_lock_bh(&nr_list_lock);
-        if (*pos == 0)
-                return SEQ_START_TOKEN;
-
-        sk_for_each(s, node, &nr_list) {
-                if (i == *pos)
-                        return s;
-                ++i;
-        }
-        return NULL;
+        return seq_hlist_start_head(&nr_list, *pos);
 }
 
 static void *nr_info_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-        ++*pos;
-
-        return (v == SEQ_START_TOKEN) ? sk_head(&nr_list)
-                : sk_next((struct sock *)v);
+        return seq_hlist_next(v, &nr_list, pos);
 }
 
 static void nr_info_stop(struct seq_file *seq, void *v)
@@ -1298,7 +1283,7 @@ static void nr_info_stop(struct seq_file *seq, void *v)
 
 static int nr_info_show(struct seq_file *seq, void *v)
 {
-        struct sock *s = v;
+        struct sock *s = sk_entry(v);
         struct net_device *dev;
         struct nr_sock *nr;
         const char *devname;