[PATCH net-next 04/10] net: macsec: introduce the netdev_macsec structure

[Antoine Tenart]

This patch introduces the netdev_macsec structure. It will be used
in the kernel to exchange information between the common MACsec
implementation (macsec.c) and the MACsec hardware offloading
implementations. This structure contains a command (struct
netdev_macsec_command) and pointers to MACsec specific structures which
contain the actual MACsec configuration.

Signed-off-by: Antoine Tenart <antoine.ten...@bootlin.com>
---
 include/net/macsec.h | 45 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/include/net/macsec.h b/include/net/macsec.h
index 15ff331dd670..1e4d37c190ed 100644
--- a/include/net/macsec.h
+++ b/include/net/macsec.h
@@ -175,4 +175,49 @@ struct macsec_secy {
        struct macsec_rx_sc __rcu *rx_sc;
 };
 
+enum netdev_macsec_command {
+       /* Device wide */
+       MACSEC_DEV_OPEN,
+       MACSEC_DEV_STOP,
+
+       /* SecY */
+       MACSEC_ADD_SECY,
+       MACSEC_UPD_SECY,
+       MACSEC_DEL_SECY,
+
+       /* Security channels */
+       MACSEC_ADD_RXSC,
+       MACSEC_UPD_RXSC,
+       MACSEC_DEL_RXSC,
+
+       /* Security associations */
+       MACSEC_ADD_RXSA,
+       MACSEC_UPD_RXSA,
+       MACSEC_DEL_RXSA,
+       MACSEC_ADD_TXSA,
+       MACSEC_UPD_TXSA,
+       MACSEC_DEL_TXSA,
+};
+
+struct netdev_macsec {
+       enum netdev_macsec_command command;
+       u8 prepare:1;
+
+       union {
+               /* MACSEC_*_SECY */
+               const struct macsec_secy *secy;
+               /* MACSEC_*_RXSC */
+               const struct macsec_rx_sc *rx_sc;
+               /* MACSEC_*_RXSA/TXSA */
+               struct {
+                       unsigned char assoc_num;
+                       u8 key[MACSEC_KEYID_LEN];
+                       union {
+                               const struct macsec_rx_sa *rx_sa;
+                               const struct macsec_tx_sa *tx_sa;
+                       };
+               } sa;
+       };
+};
+
 #endif /* _NET_MACSEC_H_ */
-- 
2.20.1