From 4dbc306e0736685c5298073bed19cbf9f4b4cb92 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 6 Feb 2024 18:02:14 +0200 Subject: wifi: iwlwifi: queue: improve warning for no skb in reclaim We've seen this warning trigger, and while the reason is probably obvious, I haven't been able to see it yet. Add more information to the warning message to help identify the cause. Also print out both index and SSN for all the messages. Signed-off-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://msgid.link/20240206175739.581427dc81fc.I9a109d02b4349807dce521c693ecd3516ec58cc0@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/queue/tx.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/net/wireless/intel') diff --git a/drivers/net/wireless/intel/iwlwifi/queue/tx.c b/drivers/net/wireless/intel/iwlwifi/queue/tx.c index ba0419bc1765..d3bde2d010b7 100644 --- a/drivers/net/wireless/intel/iwlwifi/queue/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/queue/tx.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2020-2023 Intel Corporation + * Copyright (C) 2020-2024 Intel Corporation */ #include #include @@ -1602,8 +1602,8 @@ void iwl_txq_reclaim(struct iwl_trans *trans, int txq_id, int ssn, if (read_ptr == tfd_num) goto out; - IWL_DEBUG_TX_REPLY(trans, "[Q %d] %d -> %d (%d)\n", - txq_id, txq->read_ptr, tfd_num, ssn); + IWL_DEBUG_TX_REPLY(trans, "[Q %d] %d (%d) -> %d (%d)\n", + txq_id, read_ptr, txq->read_ptr, tfd_num, ssn); /*Since we free until index _not_ inclusive, the one before index is * the last we will free. This one must be used */ @@ -1631,7 +1631,8 @@ void iwl_txq_reclaim(struct iwl_trans *trans, int txq_id, int ssn, read_ptr = iwl_txq_get_cmd_index(txq, txq->read_ptr)) { struct sk_buff *skb = txq->entries[read_ptr].skb; - if (WARN_ON_ONCE(!skb)) + if (WARN_ONCE(!skb, "no SKB at %d (%d) on queue %d\n", + read_ptr, txq->read_ptr, txq_id)) continue; iwl_txq_free_tso_page(trans, skb); -- cgit v1.2.3