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[mlx5-next,01/14] macsec: add functions to get MACsec real netdevice and check offload

Message ID 8ff59de0c55cc6de2ae20a98ee3e70f7aa5a5953.1691403485.git.leon@kernel.org (mailing list archive)
State Superseded
Headers show
Series mlx5 MACsec RoCEv2 support | expand

Commit Message

Leon Romanovsky Aug. 7, 2023, 10:44 a.m. UTC 
From: Patrisious Haddad <phaddad@nvidia.com>

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>
---
 drivers/net/macsec.c | 15 +++++++++++++++
 include/net/macsec.h |  2 ++
 2 files changed, 17 insertions(+)
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Patch

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 984dfa5d6c11..ffc421d2de16 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -4240,6 +4240,21 @@  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)
+{
+	if (!dev)
+		return false;
+
+	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 441ed8fd4b5f..75a6f4863c83 100644
--- 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)
 {