From: Johannes Berg <[email protected]>
If the incoming frame should be an A-MSDU, it may already be one,
for example in the case of NAN multicast being encapsulated in an
A-MSDU. Thus, use the GSO algorithm to build A-MSDU only if the
skb actually contains GSO data.
Fixes: 6ffe5de35b05 ("iwlwifi: pcie: add AMSDU to gen2")
Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Luca Coelho <[email protected]>
---
drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
index 943891a9d3e7..ba9d37bed4c2 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
@@ -539,7 +539,12 @@ struct iwl_tfh_tfd *iwl_pcie_gen2_build_tfd(struct
iwl_trans *trans,
hdr_len = ieee80211_hdrlen(hdr->frame_control);
- if (amsdu)
+ /*
+ * Only build A-MSDUs here if doing so by GSO, otherwise it may be
+ * an A-MSDU for other reasons, e.g. NAN or an A-MSDU having been
+ * built in the higher layers already.
+ */
+ if (amsdu && skb_shinfo(skb)->gso_size)
return iwl_pcie_gen2_build_tx_amsdu(trans, txq, dev_cmd, skb,
out_meta, hdr_len, len);
--
2.18.0
