diff mbox series

[net-next,v3,29/31] net: socket: return changed ifreq from SIOCDEVPRIVATE

Message ID 20210727134517.1384504-30-arnd@kernel.org
State New
Headers show
Series ndo_ioctl rework | expand

Commit Message

Arnd Bergmann July 27, 2021, 1:45 p.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>


Some drivers that use SIOCDEVPRIVATE ioctl commands modify
the ifreq structure and expect it to be passed back to user
space, which has never really happened for compat mode
because the calling these drivers through ndo_do_ioctl
requires overwriting the ifr_data pointer.

Now that all drivers are converted to ndo_siocdevprivate,
change it to handle this correctly in both compat and
native mode.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

---
 net/core/dev_ioctl.c | 4 +---
 net/socket.c         | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)

-- 
2.29.2
diff mbox series

Patch

diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index e0586bc4d6c6..70a379cee5fd 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -286,9 +286,7 @@  static int dev_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
 			return -ENODEV;
 	}
 
-	/* fall back to do_ioctl for drivers not yet converted */
-	ifr->ifr_data = data;
-	return dev_do_ioctl(dev, ifr, cmd);
+	return -EOPNOTSUPP;
 }
 
 static int dev_siocwandev(struct net_device *dev, struct if_settings *ifs)
diff --git a/net/socket.c b/net/socket.c
index ddce6327633e..48471a219c1d 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -3234,7 +3234,7 @@  static int compat_sock_ioctl_trans(struct file *file, struct socket *sock,
 	struct net *net = sock_net(sk);
 
 	if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15))
-		return compat_ifr_data_ioctl(net, cmd, argp);
+		return sock_ioctl(file, cmd, (unsigned long)argp);
 
 	switch (cmd) {
 	case SIOCSIFBR: