[NET]: Make core networking code use seq_open_private

This concerns the ipv4 and ipv6 code mostly, but also the netlink
and unix sockets.

The netlink code is an example of how to use the __seq_open_private()
call - it saves the net namespace on this private.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 39 deletions

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index b8b4b49..37bb497 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1714,26 +1714,8 @@ static const struct seq_operations ipmr_vif_seq_ops = {
 
 static int ipmr_vif_open(struct inode *inode, struct file *file)
 {
-	struct seq_file *seq;
-	int rc = -ENOMEM;
-	struct ipmr_vif_iter *s = kmalloc(sizeof(*s), GFP_KERNEL);
-
-	if (!s)
-		goto out;
-
-	rc = seq_open(file, &ipmr_vif_seq_ops);
-	if (rc)
-		goto out_kfree;
-
-	s->ct = 0;
-	seq = file->private_data;
-	seq->private = s;
-out:
-	return rc;
-out_kfree:
-	kfree(s);
-	goto out;
-
+	return seq_open_private(file, &ipmr_vif_seq_ops,
+			sizeof(struct ipmr_vif_iter));
 }
 
 static const struct file_operations ipmr_vif_fops = {
@@ -1877,25 +1859,8 @@ static const struct seq_operations ipmr_mfc_seq_ops = {
 
 static int ipmr_mfc_open(struct inode *inode, struct file *file)
 {
-	struct seq_file *seq;
-	int rc = -ENOMEM;
-	struct ipmr_mfc_iter *s = kmalloc(sizeof(*s), GFP_KERNEL);
-
-	if (!s)
-		goto out;
-
-	rc = seq_open(file, &ipmr_mfc_seq_ops);
-	if (rc)
-		goto out_kfree;
-
-	seq = file->private_data;
-	seq->private = s;
-out:
-	return rc;
-out_kfree:
-	kfree(s);
-	goto out;
-
+	return seq_open_private(file, &ipmr_mfc_seq_ops,
+			sizeof(struct ipmr_mfc_iter));
 }
 
 static const struct file_operations ipmr_mfc_fops = {