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net: lan966x: Fix return type of lan966x_port_xmit

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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 lan966x_port_xmit should be changed from int to
netdev_tx_t.

Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20220929182704.64438-1-nhuck@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nathan Huckleberry 2022-09-29 11:27:03 -07:00 committed by Jakub Kicinski
parent a08d97a193
commit 450a580fc4
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/microchip/lan966x/lan966x_main.c
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@ -344,7 +344,8 @@ static void lan966x_ifh_set_timestamp(void *ifh, u64 timestamp)
IFH_POS_TIMESTAMP, IFH_LEN * 4, PACK, 0);
}
static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev)
static netdev_tx_t lan966x_port_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct lan966x_port *port = netdev_priv(dev);
struct lan966x *lan966x = port->lan966x;