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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>
This commit is contained in:
Arnd Bergmann 2021-07-27 15:44:58 +02:00 committed by David S. Miller
parent 32d05468c4
commit d92f7b59d3
1 changed files with 15 additions and 9 deletions
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24
drivers/net/eql.c
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@ -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;
}