iwlwifi: pcie: don't pad AMSDU packets

When we TX AMSDU, we shouldn't pad the packet. In the past,
we were building AMSDU only in transport layer, and gen2
functions are built based on this. However, now that op mode
may build AMSDUs, we need to take care of padding also in
gen2 "non-pcie-amsdu" path.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c

@@ -454,7 +454,8 @@ iwl_tfh_tfd *iwl_pcie_gen2_build_tx(struct iwl_trans *trans,
 				    struct sk_buff *skb,
 				    struct iwl_cmd_meta *out_meta,
 				    int hdr_len,
-				    int tx_cmd_len)
+				    int tx_cmd_len,
+				    bool pad)
 {
 	int idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
 	struct iwl_tfh_tfd *tfd = iwl_pcie_get_tfd(trans, txq, idx);
@@ -478,7 +479,10 @@ iwl_tfh_tfd *iwl_pcie_gen2_build_tx(struct iwl_trans *trans,
 	len = tx_cmd_len + sizeof(struct iwl_cmd_header) + hdr_len -
 	      IWL_FIRST_TB_SIZE;
 
+	if (pad)
 		tb1_len = ALIGN(len, 4);
+	else
+		tb1_len = len;
 
 	/* map the data for TB1 */
 	tb1_addr = ((u8 *)&dev_cmd->hdr) + IWL_FIRST_TB_SIZE;
@@ -551,7 +555,7 @@ struct iwl_tfh_tfd *iwl_pcie_gen2_build_tfd(struct iwl_trans *trans,
 						    out_meta, hdr_len, len);
 
 	return iwl_pcie_gen2_build_tx(trans, txq, dev_cmd, skb, out_meta,
-				      hdr_len, len);
+				      hdr_len, len, !amsdu);
 }
 
 int iwl_trans_pcie_gen2_tx(struct iwl_trans *trans, struct sk_buff *skb,