From 1150ca4085afc2a42efb914dc990c68e0b3fbcb4 Mon Sep 17 00:00:00 2001 From: Larysa Zaremba Date: Thu, 25 Jun 2026 18:02:05 +0200 Subject: [PATCH] idpf: print a debug message and bail in case of non-event ctlq message Unlike previous internal idpf ctlq implementation, libie_cp calls the default message handler for all received messages that do not have a matching xn transaction, not only for VIRTCHNL2_OP_EVENT. This leads to many error messages printing garbage, because the parsing expected a valid event message, but got e.g. a delayed response for a timed-out transaction. The information about timed-out transactions and otherwise unhandleable messages can still be valuable for developers, so print the information with dynamic debug and exit the function, so the following functions can parse valid events in peace. Reviewed-by: Aleksandr Loktionov Reviewed-by: Michal Kubiak Tested-by: Samuel Salin Signed-off-by: Larysa Zaremba Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c index 03b371a6aa2b..1caf52706973 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c +++ b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c @@ -84,6 +84,13 @@ void idpf_recv_event_msg(struct libie_ctlq_ctx *ctx, u32 event; adapter = container_of(ctx, struct idpf_adapter, ctlq_ctx); + if (ctlq_msg->chnl_opcode != VIRTCHNL2_OP_EVENT) { + dev_dbg(&adapter->pdev->dev, + "Unhandled message with opcode %u from CP\n", + ctlq_msg->chnl_opcode); + goto free_rx_buf; + } + if (payload_size < sizeof(*v2e)) { dev_err_ratelimited(&adapter->pdev->dev, "Failed to receive valid payload for event msg (op %d len %d)\n", ctlq_msg->chnl_opcode,