[RFC net-next 12/28] tehuti: use ndo_siocdevprivate
From: Arnd Bergmann <arnd@kernel.org>
Date: 2020-11-06 22:18:43
Also in:
bridge, linux-hams, linux-wireless, lkml
Subsystem:
networking drivers, tehuti ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Andy Gospodarek, Linus Torvalds
From: Arnd Bergmann <arnd@arndb.de> Tehuti only implements private ioctl commands, and implements them by overriding the ifreq layout, which is broken in compat mode. Move it to the ndo_siocdevprivate callback in order to fix this. Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/net/ethernet/tehuti/tehuti.c | 18 +++++------------- 1 file changed, 5 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/tehuti/tehuti.c b/drivers/net/ethernet/tehuti/tehuti.c
index b8f4f419173f..e25524081a30 100644
--- a/drivers/net/ethernet/tehuti/tehuti.c
+++ b/drivers/net/ethernet/tehuti/tehuti.c@@ -637,7 +637,8 @@ static int bdx_range_check(struct bdx_priv *priv, u32 offset) -EINVAL : 0; } -static int bdx_ioctl_priv(struct net_device *ndev, struct ifreq *ifr, int cmd) +static int bdx_siocdevprivate(struct net_device *ndev, struct ifreq *ifr, + void __user *udata, int cmd) { struct bdx_priv *priv = netdev_priv(ndev); u32 data[3];
@@ -647,7 +648,7 @@ static int bdx_ioctl_priv(struct net_device *ndev, struct ifreq *ifr, int cmd) DBG("jiffies=%ld cmd=%d\n", jiffies, cmd); if (cmd != SIOCDEVPRIVATE) { - error = copy_from_user(data, ifr->ifr_data, sizeof(data)); + error = copy_from_user(data, udata, sizeof(data)); if (error) { pr_err("can't copy from user\n"); RET(-EFAULT);
@@ -669,7 +670,7 @@ static int bdx_ioctl_priv(struct net_device *ndev, struct ifreq *ifr, int cmd) data[2] = READ_REG(priv, data[1]); DBG("read_reg(0x%x)=0x%x (dec %d)\n", data[1], data[2], data[2]); - error = copy_to_user(ifr->ifr_data, data, sizeof(data)); + error = copy_to_user(udata, data, sizeof(data)); if (error) RET(-EFAULT); break;
@@ -688,15 +689,6 @@ static int bdx_ioctl_priv(struct net_device *ndev, struct ifreq *ifr, int cmd) return 0; } -static int bdx_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd) -{ - ENTER; - if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) - RET(bdx_ioctl_priv(ndev, ifr, cmd)); - else - RET(-EOPNOTSUPP); -} - /** * __bdx_vlan_rx_vid - private helper for adding/killing VLAN vid * @ndev: network device
@@ -1860,7 +1852,7 @@ static const struct net_device_ops bdx_netdev_ops = { .ndo_stop = bdx_close, .ndo_start_xmit = bdx_tx_transmit, .ndo_validate_addr = eth_validate_addr, - .ndo_do_ioctl = bdx_ioctl, + .ndo_siocdevprivate = bdx_siocdevprivate, .ndo_set_rx_mode = bdx_setmulti, .ndo_change_mtu = bdx_change_mtu, .ndo_set_mac_address = bdx_set_mac,
--
2.27.0