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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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34
drivers/net/netdevsim/netdevsim.h
View File

@@ -23,6 +23,7 @@
#include <net/devlink.h>
#include <net/udp_tunnel.h>
#include <net/xdp.h>
#include <net/macsec.h>
#define DRV_NAME "netdevsim"
@@ -52,6 +53,25 @@ struct nsim_ipsec {
u32 ok;
};
#define NSIM_MACSEC_MAX_SECY_COUNT 3
#define NSIM_MACSEC_MAX_RXSC_COUNT 1
struct nsim_rxsc {
sci_t sci;
bool used;
};
struct nsim_secy {
sci_t sci;
struct nsim_rxsc nsim_rxsc[NSIM_MACSEC_MAX_RXSC_COUNT];
u8 nsim_rxsc_count;
bool used;
};
struct nsim_macsec {
struct nsim_secy nsim_secy[NSIM_MACSEC_MAX_SECY_COUNT];
u8 nsim_secy_count;
};
struct nsim_ethtool_pauseparam {
bool rx;
bool tx;
@@ -93,6 +113,7 @@ struct netdevsim {
bool bpf_map_accept;
struct nsim_ipsec ipsec;
struct nsim_macsec macsec;
struct {
u32 inject_error;
u32 sleep;
@@ -366,6 +387,19 @@ static inline bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb)
}
#endif
#if IS_ENABLED(CONFIG_MACSEC)
void nsim_macsec_init(struct netdevsim *ns);
void nsim_macsec_teardown(struct netdevsim *ns);
#else
static inline void nsim_macsec_init(struct netdevsim *ns)
{
}
static inline void nsim_macsec_teardown(struct netdevsim *ns)
{
}
#endif
struct nsim_bus_dev {
struct device dev;
struct list_head list;