diff options
| -rw-r--r-- | drivers/net/tehuti.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/tehuti.c b/drivers/net/tehuti.c index 17585e5eed53..d2e1b219673d 100644 --- a/drivers/net/tehuti.c +++ b/drivers/net/tehuti.c @@ -625,6 +625,12 @@ static void __init bdx_firmware_endianess(void) s_firmLoad[i] = CPU_CHIP_SWAP32(s_firmLoad[i]); } +static int bdx_range_check(struct bdx_priv *priv, u32 offset) +{ + return (offset > (u32) (BDX_REGS_SIZE / priv->nic->port_num)) ? + -EINVAL : 0; +} + static int bdx_ioctl_priv(struct net_device *ndev, struct ifreq *ifr, int cmd) { struct bdx_priv *priv = ndev->priv; @@ -646,6 +652,9 @@ static int bdx_ioctl_priv(struct net_device *ndev, struct ifreq *ifr, int cmd) switch (data[0]) { case BDX_OP_READ: + error = bdx_range_check(priv, data[1]); + if (error < 0) + return error; data[2] = READ_REG(priv, data[1]); DBG("read_reg(0x%x)=0x%x (dec %d)\n", data[1], data[2], data[2]); @@ -655,6 +664,11 @@ static int bdx_ioctl_priv(struct net_device *ndev, struct ifreq *ifr, int cmd) break; case BDX_OP_WRITE: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + error = bdx_range_check(priv, data[1]); + if (error < 0) + return error; WRITE_REG(priv, data[1], data[2]); DBG("write_reg(0x%x, 0x%x)\n", data[1], data[2]); break; |