[PATCH 6.18 58/83] idpf: set the payload size before calling the async handler

Greg Kroah-Hartman
2026-04-13T16:09:17Z

From: Emil Tantilov <emil.s.tantilov@intel.com>

commit 8e2a2420e267a515f6db56a6e9570b5cacd92919 upstream.

Set the payload size before forwarding the reply to the async handler.
Without this, xn->reply_sz will be 0 and idpf_mac_filter_async_handler()
will never get past the size check.

Fixes: 34c21fa894a1 ("idpf: implement virtchnl transaction manager")
Cc: stable@vger.kernel.org
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Li Li <boolli@google.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Samuel Salin <Samuel.salin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 4 ++++
1 file changed, 4 insertions(+)

--- a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
@@ -612,6 +612,10 @@ idpf_vc_xn_forward_reply(struct idpf_ada
err = -ENXIO;
goto out_unlock;
case IDPF_VC_XN_ASYNC:
+ /* Set reply_sz from the actual payload so that async_handler
+ * can evaluate the response.
+ */
+ xn->reply_sz = ctlq_msg->data_len;
err = idpf_vc_xn_forward_async(adapter, xn, ctlq_msg);
idpf_vc_xn_unlock(xn);
return err;