From: Kuniyuki Iwashima <kuniyu@amazon.com>
Date: Mon, 21 Oct 2024 18:32:39 +0000 (-0700)
Subject: ipv4: Convert devinet_ioctl to per-netns RTNL.
X-Git-Tag: v6.13-rc1~135^2~216^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7ed8da17bfb2b033e42afa842ca22641821e231c;p=thirdparty%2Fkernel%2Flinux.git

ipv4: Convert devinet_ioctl to per-netns RTNL.

ioctl(SIOCGIFCONF) calls dev_ifconf() that operates on the current netns.

Let's use per-netns RTNL helpers in dev_ifconf() and inet_gifconf().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---

diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index 473c437b6b538..46d43b9504713 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -64,7 +64,7 @@ int dev_ifconf(struct net *net, struct ifconf __user *uifc)
 	}
 
 	/* Loop over the interfaces, and write an info block for each. */
-	rtnl_lock();
+	rtnl_net_lock(net);
 	for_each_netdev(net, dev) {
 		if (!pos)
 			done = inet_gifconf(dev, NULL, 0, size);
@@ -72,12 +72,12 @@ int dev_ifconf(struct net *net, struct ifconf __user *uifc)
 			done = inet_gifconf(dev, pos + total,
 					    len - total, size);
 		if (done < 0) {
-			rtnl_unlock();
+			rtnl_net_unlock(net);
 			return -EFAULT;
 		}
 		total += done;
 	}
-	rtnl_unlock();
+	rtnl_net_unlock(net);
 
 	return put_user(total, &uifc->ifc_len);
 }
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index fb4bc63b8fa29..f58f39a9ee874 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1314,7 +1314,7 @@ out:
 
 int inet_gifconf(struct net_device *dev, char __user *buf, int len, int size)
 {
-	struct in_device *in_dev = __in_dev_get_rtnl(dev);
+	struct in_device *in_dev = __in_dev_get_rtnl_net(dev);
 	const struct in_ifaddr *ifa;
 	struct ifreq ifr;
 	int done = 0;
@@ -1325,7 +1325,7 @@ int inet_gifconf(struct net_device *dev, char __user *buf, int len, int size)
 	if (!in_dev)
 		goto out;
 
-	in_dev_for_each_ifa_rtnl(ifa, in_dev) {
+	in_dev_for_each_ifa_rtnl_net(dev_net(dev), ifa, in_dev) {
 		if (!buf) {
 			done += size;
 			continue;