efi_loader: use TPL_NOTIFY for network timer event

We use a timer to poll the network.

iPXE is used for booting from iSCSI drives. It has been changed to run at
TPL_CALLBACK most of the time (which is not what the UEFI spec
recommends).

By changing our timer to TPL_NOTIFY we can ensure that it is nevertheless
executed.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/lib/efi_loader/efi_net.c b/lib/efi_loader/efi_net.c
index b88dc91f58cbdf0a3d20891d9f0aee08ed35e748..3d860e658e64329cedfa6c6e659a001bb12c98e9 100644 (file)
--- a/lib/efi_loader/efi_net.c
+++ b/lib/efi_loader/efi_net.c
@@ -353,8 +353,10 @@ efi_status_t efi_net_register(void)
         *
         * The notification function is used to check if a new network packet
         * has been received.
+        *
+        * iPXE is running at TPL_CALLBACK most of the time. Use a higher TPL.
         */
-       r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
+       r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_NOTIFY,
                             efi_network_timer_notify, NULL, NULL,
                             &network_timer_event);
        if (r != EFI_SUCCESS) {