From 4a7703582836f55a1cbad0e2c1c6ebbee3f9b3a7 Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Wed, 1 Oct 2008 17:18:35 -0700 Subject: e1000e: write protect ICHx NVM to prevent malicious write/erase Set the hardware to ignore all write/erase cycles to the GbE region in the ICHx NVM. This feature can be disabled by the WriteProtectNVM module parameter (enabled by default) only after a hardware reset, but the machine must be power cycled before trying to enable writes. Signed-off-by: Bruce Allan Signed-off-by: Jesse Brandeburg CC: arjan@linux.intel.com Signed-off-by: Linus Torvalds --- drivers/net/e1000e/ethtool.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/e1000e/ethtool.c') diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c index e21c9e0f373..5ed8e13d5fe 100644 --- a/drivers/net/e1000e/ethtool.c +++ b/drivers/net/e1000e/ethtool.c @@ -529,6 +529,9 @@ static int e1000_set_eeprom(struct net_device *netdev, if (eeprom->magic != (adapter->pdev->vendor | (adapter->pdev->device << 16))) return -EFAULT; + if (adapter->flags & FLAG_READ_ONLY_NVM) + return -EINVAL; + max_len = hw->nvm.word_size * 2; first_word = eeprom->offset >> 1; -- cgit v1.2.3-70-g09d2