macsec: add functions to get macsec real netdevice and check offload

Given a macsec net_device add two functions to return the real net_device
for that device, and check if that macsec device is offloaded or not.

This is needed for auxiliary drivers that implement MACsec offload, but
have flows which are triggered over the macsec net_device, this allows
the drivers in such cases to verify if the device is offloaded or not,
and to access the real device of that macsec device, which would
belong to the driver, and would be needed for the offload procedure.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Raed Salem <raeds@nvidia.com>
Reviewed-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 984dfa5d6c11cb3ae6900597edeb1612f27decc3..4895af1c5b7b5d669c8cf4179f88acc12d68542e 100644 (file)
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -4240,6 +4240,18 @@ static struct net *macsec_get_link_net(const struct net_device *dev)
        return dev_net(macsec_priv(dev)->real_dev);
 }
 
+struct net_device *macsec_get_real_dev(const struct net_device *dev)
+{
+       return macsec_priv(dev)->real_dev;
+}
+EXPORT_SYMBOL_GPL(macsec_get_real_dev);
+
+bool macsec_netdev_is_offloaded(struct net_device *dev)
+{
+       return macsec_is_offloaded(macsec_priv(dev));
+}
+EXPORT_SYMBOL_GPL(macsec_netdev_is_offloaded);
+
 static size_t macsec_get_size(const struct net_device *dev)
 {
        return  nla_total_size_64bit(8) + /* IFLA_MACSEC_SCI */

diff --git a/include/net/macsec.h b/include/net/macsec.h
index 441ed8fd4b5f6e8857d41e9d5921f65742a602af..75a6f4863c837a5ba825466e477432854af865e7 100644 (file)
--- a/include/net/macsec.h
+++ b/include/net/macsec.h
@@ -312,6 +312,8 @@ static inline bool macsec_send_sci(const struct macsec_secy *secy)
        return tx_sc->send_sci ||
                (secy->n_rx_sc > 1 && !tx_sc->end_station && !tx_sc->scb);
 }
+struct net_device *macsec_get_real_dev(const struct net_device *dev);
+bool macsec_netdev_is_offloaded(struct net_device *dev);
 
 static inline void *macsec_netdev_priv(const struct net_device *dev)
 {