diff mbox series

[net-next,v2,29/31] net: socket: return changed ifreq from SIOCDEVPRIVATE

Message ID 20210720144638.2859828-30-arnd@kernel.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series ndo_ioctl rework | expand

Checks

Context Check Description
netdev/apply fail Patch does not apply to net-next
netdev/tree_selection success Clearly marked for net-next

Commit Message

Arnd Bergmann July 20, 2021, 2:46 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 4da176507006..2f58afbaf87a 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -285,9 +285,7 @@  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: