[PATCH 4/8] efi_loader: efi_net: Add efi_net_do_start() to efi_net.c

[Adriano Cordova]

This gets called each time a payload is to get executed by bootefi.
For now this only updates the PXE IP address.

Signed-off-by: Adriano Cordova <adriano.cordova at canonical.com>
---
 include/efi_loader.h       |  1 +
 lib/efi_loader/efi_net.c   | 31 ++++++++++++++++++++++++-------
 lib/efi_loader/efi_setup.c |  3 +++
 3 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index 8b4da7aa1fa..54801cdd260 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -650,6 +650,7 @@ int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc,
 efi_status_t efi_gop_register(void);
 /* Called by bootefi to make the network interface available */
 efi_status_t efi_net_register(void);
+efi_status_t efi_net_do_start(void);
 /* Called by efi_net_register to make the ip4 config2 protocol available */
 efi_status_t efi_ipconfig_register(const efi_handle_t handle,
 				   struct efi_ip4_config2_protocol *ip4config);
diff --git a/lib/efi_loader/efi_net.c b/lib/efi_loader/efi_net.c
index a48402d49d4..68051852dd8 100644
--- a/lib/efi_loader/efi_net.c
+++ b/lib/efi_loader/efi_net.c
@@ -878,6 +878,30 @@ static efi_status_t EFIAPI efi_pxe_base_code_set_packets(
 	return EFI_UNSUPPORTED;
 }
 
+/**
+ * efi_net_do_start() - start the efi network stack
+ *
+ * This gets called from do_bootefi_exec() each time a payload gets executed.
+ *
+ * Return:	status code
+ */
+efi_status_t efi_net_do_start(void)
+{
+	efi_status_t r = EFI_SUCCESS;
+
+#ifdef CONFIG_EFI_HTTP_PROTOCOL
+	/*
+	 * No harm on doing the following. If the PXE handle is present, the client could
+	 * find it and try to get its IP address from it. In here the PXE handle is present
+	 * but the PXE protocol is not yet implmenented, so we add this in the meantime.
+	 */
+	efi_net_get_addr((struct efi_ipv4_address *)&netobj->pxe_mode.station_ip,
+			 (struct efi_ipv4_address *)&netobj->pxe_mode.subnet_mask, NULL);
+#endif
+
+	return r;
+}
+
 /**
  * efi_net_register() - register the simple network protocol
  *
@@ -1019,13 +1043,6 @@ efi_status_t efi_net_register(void)
 	r = efi_http_register(&netobj->header, &netobj->http_service_binding);
 	if (r != EFI_SUCCESS)
 		goto failure_to_add_protocol;
-	/*
-	 * No harm on doing the following. If the PXE handle is present, the client could
-	 * find it and try to get its IP address from it. In here the PXE handle is present
-	 * but the PXE protocol is not yet implmenented, so we add this in the meantime.
-	 */
-	efi_net_get_addr((struct efi_ipv4_address *)&netobj->pxe_mode.station_ip,
-			 (struct efi_ipv4_address *)&netobj->pxe_mode.subnet_mask, NULL);
 #endif
 
 	return EFI_SUCCESS;
diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c
index 164586742ae..eeed82c0736 100644
--- a/lib/efi_loader/efi_setup.c
+++ b/lib/efi_loader/efi_setup.c
@@ -218,6 +218,9 @@ static efi_status_t efi_start_obj_list(void)
 {
 	efi_status_t ret = EFI_SUCCESS;
 
+	if (IS_ENABLED(CONFIG_NETDEVICES))
+		ret = efi_net_do_start();
+
 	return ret;
 }
 
-- 
2.45.2