diff mbox series

mt76: fix endianness errors in reverse_frag0_hdr_trans

Message ID 6c0181e3aa1197e9fc6bc1c2aa037211ba163a7c.1644173467.git.lorenzo@kernel.org (mailing list archive)
State Accepted
Delegated to: Felix Fietkau
Headers show
Series mt76: fix endianness errors in reverse_frag0_hdr_trans | expand

Commit Message

Lorenzo Bianconi Feb. 6, 2022, 6:53 p.m. UTC 
Fix ht ctl field size in mt{7615,7915,7921}_reverse_frag0_hdr_trans.
Fix the following endianness warnings in mt{7615,7915,7921}_reverse_frag0_hdr_trans:

drivers/net/wireless/mediatek/mt76/mt7915/mac.c:417:29: warning: cast to restricted __le32
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:417:29: warning: restricted __le32 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:417:29: warning: restricted __le32 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:417:27: warning: incorrect type in assignment (different base types)
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:417:27:    expected restricted __le16 [usertype] frame_control
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:417:27:    got unsigned long
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:418:24: warning: cast to restricted __le32
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:418:24: warning: restricted __le32 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:418:24: warning: restricted __le32 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:418:22: warning: incorrect type in assignment (different base types)
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:418:22:    expected restricted __le16 [usertype] seq_ctrl
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:418:22:    got unsigned long
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:419:20: warning: cast to restricted __le32
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:419:20: warning: restricted __le32 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:419:20: warning: restricted __le32 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:419:18: warning: incorrect type in assignment (different base types)
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:419:18:    expected restricted __le32 [usertype] qos_ctrl
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:419:18:    got unsigned long
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:420:19: warning: cast to restricted __le32
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:420:19: warning: restricted __le32 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:420:19: warning: restricted __le32 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:420:17: warning: incorrect type in assignment (different base types)
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:420:17:    expected restricted __le32 [usertype] ht_ctrl
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:420:17:    got unsigned long
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:448:25: warning: restricted __be16 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:448:38: warning: restricted __be16 degrades to integer
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:1450:23: warning: incorrect type in assignment (different base types)
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:1450:23:    expected unsigned int [usertype] *cur_info
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:1450:23:    got restricted __le32 *
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:1451:34: warning: cast to restricted __le32

Fixes: dc5399a50b45f ("mt76: reverse the first fragmented frame to 802.11")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7615/mac.c   | 31 ++++++++++++-------
 .../net/wireless/mediatek/mt76/mt7915/mac.c   | 30 +++++++++++-------
 .../net/wireless/mediatek/mt76/mt7921/mac.c   | 30 +++++++++++-------
 3 files changed, 55 insertions(+), 36 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index f035cd880696..80592d446bc3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -259,7 +259,7 @@  static int mt7615_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	struct ieee80211_sta *sta;
 	struct ieee80211_vif *vif;
 	struct ieee80211_hdr hdr;
-	__le32 qos_ctrl, ht_ctrl;
+	u16 frame_control;
 
 	if (FIELD_GET(MT_RXD1_NORMAL_ADDR_TYPE, le32_to_cpu(rxd[1])) !=
 	    MT_RXD1_NORMAL_U2M)
@@ -275,16 +275,15 @@  static int mt7615_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv);
 
 	/* store the info from RXD and ethhdr to avoid being overridden */
-	hdr.frame_control = FIELD_GET(MT_RXD4_FRAME_CONTROL, rxd[4]);
-	hdr.seq_ctrl = FIELD_GET(MT_RXD6_SEQ_CTRL, rxd[6]);
-	qos_ctrl = FIELD_GET(MT_RXD6_QOS_CTL, rxd[6]);
-	ht_ctrl = FIELD_GET(MT_RXD7_HT_CONTROL, rxd[7]);
-
+	frame_control = le32_get_bits(rxd[4], MT_RXD4_FRAME_CONTROL);
+	hdr.frame_control = cpu_to_le16(frame_control);
+	hdr.seq_ctrl = cpu_to_le16(le32_get_bits(rxd[6], MT_RXD6_SEQ_CTRL));
 	hdr.duration_id = 0;
+
 	ether_addr_copy(hdr.addr1, vif->addr);
 	ether_addr_copy(hdr.addr2, sta->addr);
-	switch (le16_to_cpu(hdr.frame_control) &
-		(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+	switch (frame_control & (IEEE80211_FCTL_TODS |
+				 IEEE80211_FCTL_FROMDS)) {
 	case 0:
 		ether_addr_copy(hdr.addr3, vif->bss_conf.bssid);
 		break;
@@ -306,15 +305,23 @@  static int mt7615_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	if (eth_hdr->h_proto == cpu_to_be16(ETH_P_AARP) ||
 	    eth_hdr->h_proto == cpu_to_be16(ETH_P_IPX))
 		ether_addr_copy(skb_push(skb, ETH_ALEN), bridge_tunnel_header);
-	else if (eth_hdr->h_proto >= cpu_to_be16(ETH_P_802_3_MIN))
+	else if (be16_to_cpu(eth_hdr->h_proto) >= ETH_P_802_3_MIN)
 		ether_addr_copy(skb_push(skb, ETH_ALEN), rfc1042_header);
 	else
 		skb_pull(skb, 2);
 
 	if (ieee80211_has_order(hdr.frame_control))
-		memcpy(skb_push(skb, 2), &ht_ctrl, 2);
-	if (ieee80211_is_data_qos(hdr.frame_control))
-		memcpy(skb_push(skb, 2), &qos_ctrl, 2);
+		memcpy(skb_push(skb, IEEE80211_HT_CTL_LEN), &rxd[7],
+		       IEEE80211_HT_CTL_LEN);
+
+	if (ieee80211_is_data_qos(hdr.frame_control)) {
+		__le16 qos_ctrl;
+
+		qos_ctrl = cpu_to_le16(le32_get_bits(rxd[6], MT_RXD6_QOS_CTL));
+		memcpy(skb_push(skb, IEEE80211_QOS_CTL_LEN), &qos_ctrl,
+		       IEEE80211_QOS_CTL_LEN);
+	}
+
 	if (ieee80211_has_a4(hdr.frame_control))
 		memcpy(skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr));
 	else
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 08ee78f6309b..713e534bf946 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -398,7 +398,7 @@  static int mt7915_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	struct ieee80211_sta *sta;
 	struct ieee80211_vif *vif;
 	struct ieee80211_hdr hdr;
-	__le32 qos_ctrl, ht_ctrl;
+	u16 frame_control;
 
 	if (FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, le32_to_cpu(rxd[3])) !=
 	    MT_RXD3_NORMAL_U2M)
@@ -414,16 +414,15 @@  static int mt7915_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv);
 
 	/* store the info from RXD and ethhdr to avoid being overridden */
-	hdr.frame_control = FIELD_GET(MT_RXD6_FRAME_CONTROL, rxd[6]);
-	hdr.seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, rxd[8]);
-	qos_ctrl = FIELD_GET(MT_RXD8_QOS_CTL, rxd[8]);
-	ht_ctrl = FIELD_GET(MT_RXD9_HT_CONTROL, rxd[9]);
-
+	frame_control = le32_get_bits(rxd[6], MT_RXD6_FRAME_CONTROL);
+	hdr.frame_control = cpu_to_le16(frame_control);
+	hdr.seq_ctrl = cpu_to_le16(le32_get_bits(rxd[8], MT_RXD8_SEQ_CTRL));
 	hdr.duration_id = 0;
+
 	ether_addr_copy(hdr.addr1, vif->addr);
 	ether_addr_copy(hdr.addr2, sta->addr);
-	switch (le16_to_cpu(hdr.frame_control) &
-		(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+	switch (frame_control & (IEEE80211_FCTL_TODS |
+				 IEEE80211_FCTL_FROMDS)) {
 	case 0:
 		ether_addr_copy(hdr.addr3, vif->bss_conf.bssid);
 		break;
@@ -445,15 +444,22 @@  static int mt7915_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	if (eth_hdr->h_proto == cpu_to_be16(ETH_P_AARP) ||
 	    eth_hdr->h_proto == cpu_to_be16(ETH_P_IPX))
 		ether_addr_copy(skb_push(skb, ETH_ALEN), bridge_tunnel_header);
-	else if (eth_hdr->h_proto >= cpu_to_be16(ETH_P_802_3_MIN))
+	else if (be16_to_cpu(eth_hdr->h_proto) >= ETH_P_802_3_MIN)
 		ether_addr_copy(skb_push(skb, ETH_ALEN), rfc1042_header);
 	else
 		skb_pull(skb, 2);
 
 	if (ieee80211_has_order(hdr.frame_control))
-		memcpy(skb_push(skb, 2), &ht_ctrl, 2);
-	if (ieee80211_is_data_qos(hdr.frame_control))
-		memcpy(skb_push(skb, 2), &qos_ctrl, 2);
+		memcpy(skb_push(skb, IEEE80211_HT_CTL_LEN), &rxd[9],
+		       IEEE80211_HT_CTL_LEN);
+	if (ieee80211_is_data_qos(hdr.frame_control)) {
+		__le16 qos_ctrl;
+
+		qos_ctrl = cpu_to_le16(le32_get_bits(rxd[8], MT_RXD8_QOS_CTL));
+		memcpy(skb_push(skb, IEEE80211_QOS_CTL_LEN), &qos_ctrl,
+		       IEEE80211_QOS_CTL_LEN);
+	}
+
 	if (ieee80211_has_a4(hdr.frame_control))
 		memcpy(skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr));
 	else
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
index d17558349a17..9487ad4812c5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
@@ -407,7 +407,7 @@  static int mt7921_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	struct ieee80211_sta *sta;
 	struct ieee80211_vif *vif;
 	struct ieee80211_hdr hdr;
-	__le32 qos_ctrl, ht_ctrl;
+	u16 frame_control;
 
 	if (FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, le32_to_cpu(rxd[3])) !=
 	    MT_RXD3_NORMAL_U2M)
@@ -423,16 +423,15 @@  static int mt7921_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv);
 
 	/* store the info from RXD and ethhdr to avoid being overridden */
-	hdr.frame_control = FIELD_GET(MT_RXD6_FRAME_CONTROL, rxd[6]);
-	hdr.seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, rxd[8]);
-	qos_ctrl = FIELD_GET(MT_RXD8_QOS_CTL, rxd[8]);
-	ht_ctrl = FIELD_GET(MT_RXD9_HT_CONTROL, rxd[9]);
-
+	frame_control = le32_get_bits(rxd[6], MT_RXD6_FRAME_CONTROL);
+	hdr.frame_control = cpu_to_le16(frame_control);
+	hdr.seq_ctrl = cpu_to_le16(le32_get_bits(rxd[8], MT_RXD8_SEQ_CTRL));
 	hdr.duration_id = 0;
+
 	ether_addr_copy(hdr.addr1, vif->addr);
 	ether_addr_copy(hdr.addr2, sta->addr);
-	switch (le16_to_cpu(hdr.frame_control) &
-		(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+	switch (frame_control & (IEEE80211_FCTL_TODS |
+				 IEEE80211_FCTL_FROMDS)) {
 	case 0:
 		ether_addr_copy(hdr.addr3, vif->bss_conf.bssid);
 		break;
@@ -454,15 +453,22 @@  static int mt7921_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
 	if (eth_hdr->h_proto == cpu_to_be16(ETH_P_AARP) ||
 	    eth_hdr->h_proto == cpu_to_be16(ETH_P_IPX))
 		ether_addr_copy(skb_push(skb, ETH_ALEN), bridge_tunnel_header);
-	else if (eth_hdr->h_proto >= cpu_to_be16(ETH_P_802_3_MIN))
+	else if (be16_to_cpu(eth_hdr->h_proto) >= ETH_P_802_3_MIN)
 		ether_addr_copy(skb_push(skb, ETH_ALEN), rfc1042_header);
 	else
 		skb_pull(skb, 2);
 
 	if (ieee80211_has_order(hdr.frame_control))
-		memcpy(skb_push(skb, 2), &ht_ctrl, 2);
-	if (ieee80211_is_data_qos(hdr.frame_control))
-		memcpy(skb_push(skb, 2), &qos_ctrl, 2);
+		memcpy(skb_push(skb, IEEE80211_HT_CTL_LEN), &rxd[9],
+		       IEEE80211_HT_CTL_LEN);
+	if (ieee80211_is_data_qos(hdr.frame_control)) {
+		__le16 qos_ctrl;
+
+		qos_ctrl = cpu_to_le16(le32_get_bits(rxd[8], MT_RXD8_QOS_CTL));
+		memcpy(skb_push(skb, IEEE80211_QOS_CTL_LEN), &qos_ctrl,
+		       IEEE80211_QOS_CTL_LEN);
+	}
+
 	if (ieee80211_has_a4(hdr.frame_control))
 		memcpy(skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr));
 	else