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authorArnd Bergmann <arnd@arndb.de>2021-07-27 16:44:58 +0300
committerDavid S. Miller <davem@davemloft.net>2021-07-27 22:11:43 +0300
commitd92f7b59d32bfeace7315b416f5244dd5c3935fa (patch)
treeba1074697234ceeb2c984748526c0b8d60bfc4c6 /drivers/net/eql.c
parent32d05468c46267db1c0128057d4fcf80332fecf8 (diff)
downloadlinux-d92f7b59d32bfeace7315b416f5244dd5c3935fa.tar.xz
eql: use ndo_siocdevprivate
The private ioctls in eql pass the arguments correctly through ifr_data, but the slaving_request_t and slave_config_t structures are incompatible with compat mode and need special conversion code in the driver. Convert to siocdevprivate for now, and return an error when called in compat mode. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/eql.c')
-rw-r--r--drivers/net/eql.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/net/eql.c b/drivers/net/eql.c
index 74263f8efe1a..8ef34901c2d8 100644
--- a/drivers/net/eql.c
+++ b/drivers/net/eql.c
@@ -113,6 +113,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/compat.h>
#include <linux/capability.h>
#include <linux/module.h>
#include <linux/kernel.h>
@@ -131,7 +132,8 @@
static int eql_open(struct net_device *dev);
static int eql_close(struct net_device *dev);
-static int eql_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
+static int eql_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+ void __user *data, int cmd);
static netdev_tx_t eql_slave_xmit(struct sk_buff *skb, struct net_device *dev);
#define eql_is_slave(dev) ((dev->flags & IFF_SLAVE) == IFF_SLAVE)
@@ -170,7 +172,7 @@ static const char version[] __initconst =
static const struct net_device_ops eql_netdev_ops = {
.ndo_open = eql_open,
.ndo_stop = eql_close,
- .ndo_do_ioctl = eql_ioctl,
+ .ndo_siocdevprivate = eql_siocdevprivate,
.ndo_start_xmit = eql_slave_xmit,
};
@@ -268,25 +270,29 @@ static int eql_s_slave_cfg(struct net_device *dev, slave_config_t __user *sc);
static int eql_g_master_cfg(struct net_device *dev, master_config_t __user *mc);
static int eql_s_master_cfg(struct net_device *dev, master_config_t __user *mc);
-static int eql_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int eql_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+ void __user *data, int cmd)
{
if (cmd != EQL_GETMASTRCFG && cmd != EQL_GETSLAVECFG &&
!capable(CAP_NET_ADMIN))
return -EPERM;
+ if (in_compat_syscall()) /* to be implemented */
+ return -EOPNOTSUPP;
+
switch (cmd) {
case EQL_ENSLAVE:
- return eql_enslave(dev, ifr->ifr_data);
+ return eql_enslave(dev, data);
case EQL_EMANCIPATE:
- return eql_emancipate(dev, ifr->ifr_data);
+ return eql_emancipate(dev, data);
case EQL_GETSLAVECFG:
- return eql_g_slave_cfg(dev, ifr->ifr_data);
+ return eql_g_slave_cfg(dev, data);
case EQL_SETSLAVECFG:
- return eql_s_slave_cfg(dev, ifr->ifr_data);
+ return eql_s_slave_cfg(dev, data);
case EQL_GETMASTRCFG:
- return eql_g_master_cfg(dev, ifr->ifr_data);
+ return eql_g_master_cfg(dev, data);
case EQL_SETMASTRCFG:
- return eql_s_master_cfg(dev, ifr->ifr_data);
+ return eql_s_master_cfg(dev, data);
default:
return -EOPNOTSUPP;
}