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

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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>
This commit is contained in:
Patrisious Haddad 2022-05-02 14:40:56 +03:00 committed by Leon Romanovsky
parent 5d0c230f1d
commit f132fdd9dc
2 changed files with 14 additions and 0 deletions
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12
drivers/net/macsec.c
View File

@ -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 */

2
include/net/macsec.h
View File

@ -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)
{