diff mbox series

[RFC,net-next,28/28] net: socket: return changed ifreq from SIOCDEVPRIVATE

Message ID 20201106221743.3271965-29-arnd@kernel.org (mailing list archive)
State RFC
Delegated to: Johannes Berg
Headers show
Series ndo_ioctl rework | expand

Commit Message

Arnd Bergmann Nov. 6, 2020, 10:17 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(-)
diff mbox series

Patch

diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index 99efe8e2e0ce..0c058c3dc89a 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -296,9 +296,7 @@  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;
 }
 
 /*
diff --git a/net/socket.c b/net/socket.c
index 1e077182d0fd..6edf3f4d9dca 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -3206,7 +3206,7 @@  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: