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netdevsim: add dummy macsec offload

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When the kernel is compiled with MACsec support, add the
NETIF_F_HW_MACSEC feature to netdevsim devices and implement
macsec_ops.

To allow easy testing of failure from the device, support is limited
to 3 SecY's per netdevsim device, and 1 RXSC per SecY.

v2:
 - nsim_macsec_add_secy, return -ENOSPC if secy_count isn't full but
   we can't find an empty slot (Simon Horman)
 - add sci_to_cpu to make sparse happy (Simon Horman)
 - remove set but not used secy variable (kernel test robot and
   Simon Horman)

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sabrina Dubroca
2023-07-13 15:20:23 +02:00
committed by David S. Miller
parent 633d76ad01
commit 02b34d03a2
4 changed files with 397 additions and 0 deletions
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3
drivers/net/netdevsim/netdev.c
View File

@@ -304,6 +304,7 @@ static int nsim_init_netdevsim(struct netdevsim *ns)
if (err)
goto err_utn_destroy;
nsim_macsec_init(ns);
nsim_ipsec_init(ns);
err = register_netdevice(ns->netdev);
@@ -314,6 +315,7 @@ static int nsim_init_netdevsim(struct netdevsim *ns)
err_ipsec_teardown:
nsim_ipsec_teardown(ns);
nsim_macsec_teardown(ns);
nsim_bpf_uninit(ns);
err_utn_destroy:
rtnl_unlock();
@@ -374,6 +376,7 @@ void nsim_destroy(struct netdevsim *ns)
rtnl_lock();
unregister_netdevice(dev);
if (nsim_dev_port_is_pf(ns->nsim_dev_port)) {
nsim_macsec_teardown(ns);
nsim_ipsec_teardown(ns);
nsim_bpf_uninit(ns);
}