ethtool: ioctl: account for sopass diff in set_wol

sopass won't be set if wolopt doesn't change. This means the following
will fail to set the correct sopass.
ethtool -s eth0 wol s sopass 11:22:33:44:55:66
ethtool -s eth0 wol s sopass 22:44:55:66:77:88

Make sure we call into the driver layer set_wol if sopass is different.

Fixes: 55b24334c0f2 ("ethtool: ioctl: improve error checking for set_wol")
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Link: https://lore.kernel.org/r/1686605822-34544-1-git-send-email-justin.chen@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 37b5822..4a51e0e 100644 (file)
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -1452,7 +1452,8 @@ static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
        if (wol.wolopts & ~cur_wol.supported)
                return -EINVAL;
 
-       if (wol.wolopts == cur_wol.wolopts)
+       if (wol.wolopts == cur_wol.wolopts &&
+           !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass)))
                return 0;
 
        ret = dev->ethtool_ops->set_wol(dev, &wol);