Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) If the timing is wrong we can indefinitely stop generating new ipv6
    temporary addresses, from Marcus Huewe.

 2) Don't double free per-cpu stats in ipv6 SIT tunnel driver, from Cong
    Wang.

 3) Put protections in place so that AF_PACKET is not able to submit
    packets which don't even have a link level header to drivers. From
    Willem de Bruijn.

 4) Fix memory leaks in ipv4 and ipv6 multicast code, from Hangbin Liu.

 5) Don't use udp_ioctl() in l2tp code, UDP version expects a UDP socket
    and that doesn't go over very well when it is passed an L2TP one.
    Fix from Eric Dumazet.

 6) Don't crash on NULL pointer in phy_attach_direct(), from Florian
    Fainelli.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  l2tp: do not use udp_ioctl()
  xen-netfront: Delete rx_refill_timer in xennet_disconnect_backend()
  NET: mkiss: Fix panic
  net: hns: Fix the device being used for dma mapping during TX
  net: phy: Initialize mdio clock at probe function
  igmp, mld: Fix memory leak in igmpv3/mld_del_delrec()
  xen-netfront: Improve error handling during initialization
  sierra_net: Skip validating irrelevant fields for IDLE LSIs
  sierra_net: Add support for IPv6 and Dual-Stack Link Sense Indications
  kcm: fix 0-length case for kcm_sendmsg()
  xen-netfront: Rework the fix for Rx stall during OOM and network stress
  net: phy: Fix PHY module checks and NULL deref in phy_attach_direct()
  net: thunderx: Fix PHY autoneg for SGMII QLM mode
  net: dsa: Do not destroy invalid network devices
  ping: fix a null pointer dereference
  packet: round up linear to header len
  net: introduce device min_header_len
  sit: fix a double free on error path
  lwtunnel: valid encap attr check should return 0 when lwtunnel is disabled
  ipv6: addrconf: fix generation of new temporary addresses

1 files changed, 26 insertions, 1 deletions

diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 3d73278b86ca..28c21546d5b6 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -11,6 +11,7 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <asm/ioctls.h>
 #include <linux/icmp.h>
 #include <linux/module.h>
 #include <linux/skbuff.h>
@@ -553,6 +554,30 @@ out:
 	return err ? err : copied;
 }
 
+int l2tp_ioctl(struct sock *sk, int cmd, unsigned long arg)
+{
+	struct sk_buff *skb;
+	int amount;
+
+	switch (cmd) {
+	case SIOCOUTQ:
+		amount = sk_wmem_alloc_get(sk);
+		break;
+	case SIOCINQ:
+		spin_lock_bh(&sk->sk_receive_queue.lock);
+		skb = skb_peek(&sk->sk_receive_queue);
+		amount = skb ? skb->len : 0;
+		spin_unlock_bh(&sk->sk_receive_queue.lock);
+		break;
+
+	default:
+		return -ENOIOCTLCMD;
+	}
+
+	return put_user(amount, (int __user *)arg);
+}
+EXPORT_SYMBOL(l2tp_ioctl);
+
 static struct proto l2tp_ip_prot = {
 	.name		   = "L2TP/IP",
 	.owner		   = THIS_MODULE,
@@ -561,7 +586,7 @@ static struct proto l2tp_ip_prot = {
 	.bind		   = l2tp_ip_bind,
 	.connect	   = l2tp_ip_connect,
 	.disconnect	   = l2tp_ip_disconnect,
-	.ioctl		   = udp_ioctl,
+	.ioctl		   = l2tp_ioctl,
 	.destroy	   = l2tp_ip_destroy_sock,
 	.setsockopt	   = ip_setsockopt,
 	.getsockopt	   = ip_getsockopt,