From: Johannes Berg Date: Fri, 1 Jun 2018 07:45:55 +0000 (+0200) Subject: iwlwifi: pcie: gen2: build A-MSDU only for GSO X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=53f474e6a8d74d5dc0c3a015d889471f9a157685;p=openwrt%2Fstaging%2Fblogic.git iwlwifi: pcie: gen2: build A-MSDU only for GSO 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 Signed-off-by: Luca Coelho --- 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);