This uses libnl3 to communicate with the macsec module available on
Linux. A recent enough version of libnl is needed for the hardware
offload support.
Signed-off-by: Emeel Hakim <ehakim@xxxxxxxxxx>
---
src/drivers/driver_macsec_linux.c | 34 +++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/src/drivers/driver_macsec_linux.c b/src/drivers/driver_macsec_linux.c
index b609bbf38..ac34d7ed9 100644
--- a/src/drivers/driver_macsec_linux.c
+++ b/src/drivers/driver_macsec_linux.c
@@ -73,6 +73,9 @@ struct macsec_drv_data {
bool replay_protect;
bool replay_protect_set;
+ enum macsec_offload offload;
+ bool offload_set;
+
u32 replay_window;
u8 encoding_sa;
@@ -228,6 +231,14 @@ static int try_commit(struct macsec_drv_data *drv)
drv->replay_window);
}
+ if (drv->offload_set) {
+ wpa_printf(MSG_DEBUG, DRV_PREFIX
+ "%s: try_commit offload=%d",
+ drv->ifname, drv->offload);
+ rtnl_link_macsec_set_offload(drv->link,
+ drv->offload);
+ }
+
if (drv->encoding_sa_set) {
wpa_printf(MSG_DEBUG, DRV_PREFIX
"%s: try_commit encoding_sa=%d",
@@ -455,6 +466,28 @@ static int macsec_drv_set_replay_protect(void *priv, bool enabled,
}
+/**
+ * macsec_drv_set_offload - Set offload status
+ * @priv: Private driver interface data
+ * @offload: 0 = MACSEC_OFFLOAD_OFF
+ * 1 = MACSEC_OFFLOAD_PHY
+ * 2 = MACSEC_OFFLOAD_MAC
+ * Returns: 0 on success, -1 on failure (or if not supported)
+ */
+static int macsec_drv_set_offload(void *priv, u8 offload)
+{
+ struct macsec_drv_data *drv = priv;
+
+
+ wpa_printf(MSG_DEBUG, "%s -> %02" PRIx8, __func__, offload);
+
+ drv->offload_set = true;
+ drv->offload = offload;
+
+ return try_commit(drv);
+}
+
+
/**
* macsec_drv_set_current_cipher_suite - Set current cipher suite
* @priv: Private driver interface data
@@ -1648,6 +1681,7 @@ const struct wpa_driver_ops wpa_driver_macsec_linux_ops = {
.enable_protect_frames = macsec_drv_enable_protect_frames,
.enable_encrypt = macsec_drv_enable_encrypt,
.set_replay_protect = macsec_drv_set_replay_protect,
+ .set_offload = macsec_drv_set_offload,
.set_current_cipher_suite = macsec_drv_set_current_cipher_suite,
.enable_controlled_port = macsec_drv_enable_controlled_port,
.get_receive_lowest_pn = macsec_drv_get_receive_lowest_pn,
--
2.21.3
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