diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/trans.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index b647eb4dca64..9db8c6eaa153 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -1261,6 +1261,19 @@ static int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb, spin_lock(&txq->lock); + /* In AGG mode, the index in the ring must correspond to the WiFi + * sequence number. This is a HW requirements to help the SCD to parse + * the BA. + * Check here that the packets are in the right place on the ring. + */ +#ifdef CONFIG_IWLWIFI_DEBUG + wifi_seq = SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); + WARN_ONCE((iwl_read_prph(trans, SCD_AGGR_SEL) & BIT(txq_id)) && + ((wifi_seq & 0xff) != q->write_ptr), + "Q: %d WiFi Seq %d tfdNum %d", + txq_id, wifi_seq, q->write_ptr); +#endif + /* Set up driver data for this TFD */ txq->entries[q->write_ptr].skb = skb; txq->entries[q->write_ptr].cmd = dev_cmd; |