From: Nathan Huckleberry <redacted>
Sent: Monday, September 12, 2022 2:44 PM
 ...
The ndo_start_xmit field in net_device_ops is expected to be of type
netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev).

The mismatched return type breaks forward edge kCFI since the underlying
function definition does not match the function hook definition.

The return type of mana_start_xmit should be changed from int to
netdev_tx_t.

Reported-by: Dan Carpenter <redacted>
Link: ...
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <redacted>

Reviewed-by: Dexuan Cui <decui@microsoft.com>

Thanks for the fix!