All usages of the vport_ops struct have the .send field set to dev_queue_xmit or internal_dev_recv. Since most usages are set to dev_queue_xmit, the function hook should match the signature of dev_queue_xmit.
The only call to vport_ops->send() is in net/openvswitch/vport.c and it throws away the return value. This mismatched return type breaks forward edge kCFI since the underlying function definition does not match the function hook definition. Reported-by: Dan Carpenter <[email protected]> Link: https://github.com/ClangBuiltLinux/linux/issues/1703 Cc: [email protected] Signed-off-by: Nathan Huckleberry <[email protected]> --- net/openvswitch/vport-internal_dev.c | 2 +- net/openvswitch/vport.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c index 35f42c9821c2..74c88a6baa43 100644 --- a/net/openvswitch/vport-internal_dev.c +++ b/net/openvswitch/vport-internal_dev.c @@ -190,7 +190,7 @@ static void internal_dev_destroy(struct vport *vport) rtnl_unlock(); } -static netdev_tx_t internal_dev_recv(struct sk_buff *skb) +static int internal_dev_recv(struct sk_buff *skb) { struct net_device *netdev = skb->dev; diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h index 7d276f60c000..6ff45e8a0868 100644 --- a/net/openvswitch/vport.h +++ b/net/openvswitch/vport.h @@ -132,7 +132,7 @@ struct vport_ops { int (*set_options)(struct vport *, struct nlattr *); int (*get_options)(const struct vport *, struct sk_buff *); - netdev_tx_t (*send) (struct sk_buff *skb); + int (*send)(struct sk_buff *skb); struct module *owner; struct list_head list; }; -- 2.37.2.789.g6183377224-goog _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
