net: rose: 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>
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 8feb9e5..e90b9b6 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -1404,29 +1404,13 @@
static void *rose_info_start(struct seq_file *seq, loff_t *pos)
__acquires(rose_list_lock)
{
- int i;
- struct sock *s;
- struct hlist_node *node;
-
spin_lock_bh(&rose_list_lock);
- if (*pos == 0)
- return SEQ_START_TOKEN;
-
- i = 1;
- sk_for_each(s, node, &rose_list) {
- if (i == *pos)
- return s;
- ++i;
- }
- return NULL;
+ return seq_hlist_start_head(&rose_list, *pos);
}
static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
{
- ++*pos;
-
- return (v == SEQ_START_TOKEN) ? sk_head(&rose_list)
- : sk_next((struct sock *)v);
+ return seq_hlist_next(v, &rose_list, pos);
}
static void rose_info_stop(struct seq_file *seq, void *v)
@@ -1444,7 +1428,7 @@
"dest_addr dest_call src_addr src_call dev lci neigh st vs vr va t t1 t2 t3 hb idle Snd-Q Rcv-Q inode\n");
else {
- struct sock *s = v;
+ struct sock *s = sk_entry(v);
struct rose_sock *rose = rose_sk(s);
const char *devname, *callsign;
const struct net_device *dev = rose->device;
