linux-kernel - [PATCH v3 04/10] staging: r8188eu: use htons macro instead of __constant

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Date:   Thu, 20 Oct 2022 13:24:46 +0530
From:   Deepak R Varma <drv@...lo.com>
To:     outreachy@...ts.linux.dev, Larry.Finger@...inger.net,
        phil@...lpotter.co.uk, paskripkin@...il.com,
        gregkh@...uxfoundation.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org, kumarpraveen@...ux.microsoft.com,
        saurabh.truth@...il.com
Subject: [PATCH v3 04/10] staging: r8188eu: use htons macro instead of
 __constant_htons

Macro "htons" is more efficient and clearer. It should be used for
constants instead of the __constant_htons macro. Resolves following
checkpatch script complaint:
        WARNING: __constant_htons should be htons


Signed-off-by: Deepak R Varma <drv@...lo.com>
---

Changes in v3:
   1. Make this a driver-wide change. Feedback from philipp.g.hortmann@...il.com
   2. Correct spelling in patch log. Feedback from joe@...ches.com


 drivers/staging/r8188eu/core/rtw_br_ext.c |  6 +++---
 drivers/staging/r8188eu/core/rtw_xmit.c   | 14 +++++++-------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_br_ext.c b/drivers/staging/r8188eu/core/rtw_br_ext.c
index 14797c2d6d76..718133c991d7 100644
--- a/drivers/staging/r8188eu/core/rtw_br_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_br_ext.c
@@ -609,14 +609,14 @@ void dhcp_flag_bcast(struct adapter *priv, struct sk_buff *skb)
 	if (!priv->ethBrExtInfo.dhcp_bcst_disable) {
 		__be16 protocol = *((__be16 *)(skb->data + 2 * ETH_ALEN));

-		if (protocol == __constant_htons(ETH_P_IP)) { /*  IP */
+		if (protocol == htons(ETH_P_IP)) { /*  IP */
 			struct iphdr *iph = (struct iphdr *)(skb->data + ETH_HLEN);

 			if (iph->protocol == IPPROTO_UDP) { /*  UDP */
 				struct udphdr *udph = (struct udphdr *)((size_t)iph + (iph->ihl << 2));

-				if ((udph->source == __constant_htons(CLIENT_PORT)) &&
-				    (udph->dest == __constant_htons(SERVER_PORT))) { /*  DHCP request */
+				if ((udph->source == htons(CLIENT_PORT)) &&
+				    (udph->dest == htons(SERVER_PORT))) { /*  DHCP request */
 					struct dhcpMessage *dhcph =
 						(struct dhcpMessage *)((size_t)udph + sizeof(struct udphdr));
 					u32 cookie = be32_to_cpu((__be32)dhcph->cookie);
diff --git a/drivers/staging/r8188eu/core/rtw_xmit.c b/drivers/staging/r8188eu/core/rtw_xmit.c
index 873d2c5c3634..4f8220428328 100644
--- a/drivers/staging/r8188eu/core/rtw_xmit.c
+++ b/drivers/staging/r8188eu/core/rtw_xmit.c
@@ -1622,14 +1622,14 @@ static int rtw_br_client_tx(struct adapter *padapter, struct sk_buff **pskb)
 	spin_lock_bh(&padapter->br_ext_lock);
 	if (!(skb->data[0] & 1) && br_port &&
 	    memcmp(skb->data + ETH_ALEN, padapter->br_mac, ETH_ALEN) &&
-	    *((__be16 *)(skb->data + ETH_ALEN * 2)) != __constant_htons(ETH_P_8021Q) &&
-	    *((__be16 *)(skb->data + ETH_ALEN * 2)) == __constant_htons(ETH_P_IP) &&
+	    *((__be16 *)(skb->data + ETH_ALEN * 2)) != htons(ETH_P_8021Q) &&
+	    *((__be16 *)(skb->data + ETH_ALEN * 2)) == htons(ETH_P_IP) &&
 	    !memcmp(padapter->scdb_mac, skb->data + ETH_ALEN, ETH_ALEN) && padapter->scdb_entry) {
 		memcpy(skb->data + ETH_ALEN, GET_MY_HWADDR(padapter), ETH_ALEN);
 		padapter->scdb_entry->ageing_timer = jiffies;
 		spin_unlock_bh(&padapter->br_ext_lock);
 	} else {
-		if (*((__be16 *)(skb->data + ETH_ALEN * 2)) == __constant_htons(ETH_P_8021Q)) {
+		if (*((__be16 *)(skb->data + ETH_ALEN * 2)) == htons(ETH_P_8021Q)) {
 			is_vlan_tag = 1;
 			vlan_hdr = *((unsigned short *)(skb->data + ETH_ALEN * 2 + 2));
 			for (i = 0; i < 6; i++)
@@ -1637,10 +1637,10 @@ static int rtw_br_client_tx(struct adapter *padapter, struct sk_buff **pskb)
 			skb_pull(skb, 4);
 		}
 		if (!memcmp(skb->data + ETH_ALEN, padapter->br_mac, ETH_ALEN) &&
-		    (*((__be16 *)(skb->data + ETH_ALEN * 2)) == __constant_htons(ETH_P_IP)))
+		    (*((__be16 *)(skb->data + ETH_ALEN * 2)) == htons(ETH_P_IP)))
 			memcpy(padapter->br_ip, skb->data + WLAN_ETHHDR_LEN + 12, 4);

-		if (*((__be16 *)(skb->data + ETH_ALEN * 2)) == __constant_htons(ETH_P_IP)) {
+		if (*((__be16 *)(skb->data + ETH_ALEN * 2)) == htons(ETH_P_IP)) {
 			if (memcmp(padapter->scdb_mac, skb->data + ETH_ALEN, ETH_ALEN)) {
 				padapter->scdb_entry = (struct nat25_network_db_entry *)scdb_findEntry(padapter,
 							skb->data + WLAN_ETHHDR_LEN + 12);
@@ -1669,7 +1669,7 @@ static int rtw_br_client_tx(struct adapter *padapter, struct sk_buff **pskb)
 					skb_push(skb, 4);
 					for (i = 0; i < 6; i++)
 						*((unsigned short *)(skb->data + i * 2)) = *((unsigned short *)(skb->data + 4 + i * 2));
-					*((__be16 *)(skb->data + ETH_ALEN * 2)) = __constant_htons(ETH_P_8021Q);
+					*((__be16 *)(skb->data + ETH_ALEN * 2)) = htons(ETH_P_8021Q);
 					*((unsigned short *)(skb->data + ETH_ALEN * 2 + 2)) = vlan_hdr;
 				}

@@ -1708,7 +1708,7 @@ static int rtw_br_client_tx(struct adapter *padapter, struct sk_buff **pskb)
 			skb_push(skb, 4);
 			for (i = 0; i < 6; i++)
 				*((unsigned short *)(skb->data + i * 2)) = *((unsigned short *)(skb->data + 4 + i * 2));
-			*((__be16 *)(skb->data + ETH_ALEN * 2)) = __constant_htons(ETH_P_8021Q);
+			*((__be16 *)(skb->data + ETH_ALEN * 2)) = htons(ETH_P_8021Q);
 			*((unsigned short *)(skb->data + ETH_ALEN * 2 + 2)) = vlan_hdr;
 		}
 	}
--
2.30.2