mt76: testmode: add support for LTF and GI combinations for HE mode

Prepare for setting different LTF (1x, 2x, and 4x) and GI (0.8us,
1.6us, 3.2us) combinations in HE rate mode.
Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76.h

@@ -528,6 +528,7 @@ struct mt76_testmode_data {
 	u8 tx_rate_sgi;
 	u8 tx_rate_ldpc;
 	u8 tx_rate_stbc;
+	u8 tx_ltf;
 
 	u8 tx_antenna_mask;
 

drivers/net/wireless/mediatek/mt76/testmode.c

@@ -12,6 +12,7 @@ static const struct nla_policy mt76_tm_policy[NUM_MT76_TM_ATTRS] = {
 	[MT76_TM_ATTR_TX_RATE_SGI] = { .type = NLA_U8 },
 	[MT76_TM_ATTR_TX_RATE_LDPC] = { .type = NLA_U8 },
 	[MT76_TM_ATTR_TX_RATE_STBC] = { .type = NLA_U8 },
+	[MT76_TM_ATTR_TX_LTF] = { .type = NLA_U8 },
 	[MT76_TM_ATTR_TX_ANTENNA] = { .type = NLA_U8 },
 	[MT76_TM_ATTR_TX_POWER_CONTROL] = { .type = NLA_U8 },
 	[MT76_TM_ATTR_TX_POWER] = { .type = NLA_NESTED },
@@ -338,9 +339,10 @@ int mt76_testmode_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			   0, MT76_TM_TX_MODE_MAX) ||
 	    mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_NSS], &td->tx_rate_nss,
 			   1, hweight8(phy->antenna_mask)) ||
-	    mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_SGI], &td->tx_rate_sgi, 0, 1) ||
+	    mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_SGI], &td->tx_rate_sgi, 0, 2) ||
 	    mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_LDPC], &td->tx_rate_ldpc, 0, 1) ||
 	    mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_RATE_STBC], &td->tx_rate_stbc, 0, 1) ||
+	    mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_LTF], &td->tx_ltf, 0, 2) ||
 	    mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_ANTENNA], &td->tx_antenna_mask, 1,
 			   phy->antenna_mask) ||
 	    mt76_tm_get_u8(tb[MT76_TM_ATTR_TX_POWER_CONTROL],
@@ -478,6 +480,8 @@ int mt76_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *msg,
 	    nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_SGI, td->tx_rate_sgi) ||
 	    nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_LDPC, td->tx_rate_ldpc) ||
 	    nla_put_u8(msg, MT76_TM_ATTR_TX_RATE_STBC, td->tx_rate_stbc) ||
+	    (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_LTF) &&
+	     nla_put_u8(msg, MT76_TM_ATTR_TX_LTF, td->tx_ltf)) ||
 	    (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_ANTENNA) &&
 	     nla_put_u8(msg, MT76_TM_ATTR_TX_ANTENNA, td->tx_antenna_mask)) ||
 	    (mt76_testmode_param_present(td, MT76_TM_ATTR_TX_POWER_CONTROL) &&

drivers/net/wireless/mediatek/mt76/testmode.h

@@ -26,6 +26,7 @@
  * @MT76_TM_ATTR_TX_RATE_SGI: packet tx use short guard interval (u8)
  * @MT76_TM_ATTR_TX_RATE_LDPC: packet tx enable LDPC (u8)
  * @MT76_TM_ATTR_TX_RATE_STBC: packet tx enable STBC (u8)
+ * @MT76_TM_ATTR_TX_LTF: packet tx LTF, set 0 to 2 for 1x, 2x, and 4x LTF (u8)
  *
  * @MT76_TM_ATTR_TX_ANTENNA: tx antenna mask (u8)
  * @MT76_TM_ATTR_TX_POWER_CONTROL: enable tx power control (u8)
@@ -52,6 +53,7 @@ enum mt76_testmode_attr {
 	MT76_TM_ATTR_TX_RATE_SGI,
 	MT76_TM_ATTR_TX_RATE_LDPC,
 	MT76_TM_ATTR_TX_RATE_STBC,
+	MT76_TM_ATTR_TX_LTF,
 
 	MT76_TM_ATTR_TX_ANTENNA,
 	MT76_TM_ATTR_TX_POWER_CONTROL,