ath10k: use msdu headroom to store txfrag

[cascardo/linux.git] / drivers / net / wireless / ath / ath10k / mac.c

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 9112e6d..99a9bad 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3342,6 +3342,10 @@ int ath10k_mac_register(struct ath10k *ar)
                        IEEE80211_HW_WANT_MONITOR_VIF |
                        IEEE80211_HW_AP_LINK_PS;
 
+       /* MSDU can have HTT TX fragment pushed in front. The additional 4
+        * bytes is used for padding/alignment if necessary. */
+       ar->hw->extra_tx_headroom += sizeof(struct htt_data_tx_desc_frag)*2 + 4;
+
        if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
                ar->hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;