ksmbd: replace PAYLOAD_HEAD with inline function

Replace PAYLOAD_HEAD with inline function.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/ksmbd/ndr.c

@@ -9,7 +9,10 @@
 #include "glob.h"
 #include "ndr.h"
 
-#define PAYLOAD_HEAD(d) ((d)->data + (d)->offset)
+static inline char *ndr_get_field(struct ndr *n)
+{
+	return n->data + n->offset;
+}
 
 static int try_to_realloc_ndr_blob(struct ndr *n, size_t sz)
 {
@@ -30,7 +33,7 @@ static void ndr_write_int16(struct ndr *n, __u16 value)
 	if (n->length <= n->offset + sizeof(value))
 		try_to_realloc_ndr_blob(n, sizeof(value));
 
-	*(__le16 *)PAYLOAD_HEAD(n) = cpu_to_le16(value);
+	*(__le16 *)ndr_get_field(n) = cpu_to_le16(value);
 	n->offset += sizeof(value);
 }
 
@@ -39,7 +42,7 @@ static void ndr_write_int32(struct ndr *n, __u32 value)
 	if (n->length <= n->offset + sizeof(value))
 		try_to_realloc_ndr_blob(n, sizeof(value));
 
-	*(__le32 *)PAYLOAD_HEAD(n) = cpu_to_le32(value);
+	*(__le32 *)ndr_get_field(n) = cpu_to_le32(value);
 	n->offset += sizeof(value);
 }
 
@@ -48,7 +51,7 @@ static void ndr_write_int64(struct ndr *n, __u64 value)
 	if (n->length <= n->offset + sizeof(value))
 		try_to_realloc_ndr_blob(n, sizeof(value));
 
-	*(__le64 *)PAYLOAD_HEAD(n) = cpu_to_le64(value);
+	*(__le64 *)ndr_get_field(n) = cpu_to_le64(value);
 	n->offset += sizeof(value);
 }
 
@@ -57,7 +60,7 @@ static int ndr_write_bytes(struct ndr *n, void *value, size_t sz)
 	if (n->length <= n->offset + sz)
 		try_to_realloc_ndr_blob(n, sz);
 
-	memcpy(PAYLOAD_HEAD(n), value, sz);
+	memcpy(ndr_get_field(n), value, sz);
 	n->offset += sz;
 	return 0;
 }
@@ -67,7 +70,7 @@ static int ndr_write_string(struct ndr *n, void *value, size_t sz)
 	if (n->length <= n->offset + sz)
 		try_to_realloc_ndr_blob(n, sz);
 
-	strncpy(PAYLOAD_HEAD(n), value, sz);
+	strncpy(ndr_get_field(n), value, sz);
 	sz++;
 	n->offset += sz;
 	n->offset = ALIGN(n->offset, 2);
@@ -76,9 +79,9 @@ static int ndr_write_string(struct ndr *n, void *value, size_t sz)
 
 static int ndr_read_string(struct ndr *n, void *value, size_t sz)
 {
-	int len = strnlen(PAYLOAD_HEAD(n), sz);
+	int len = strnlen(ndr_get_field(n), sz);
 
-	memcpy(value, PAYLOAD_HEAD(n), len);
+	memcpy(value, ndr_get_field(n), len);
 	len++;
 	n->offset += len;
 	n->offset = ALIGN(n->offset, 2);
@@ -87,7 +90,7 @@ static int ndr_read_string(struct ndr *n, void *value, size_t sz)
 
 static int ndr_read_bytes(struct ndr *n, void *value, size_t sz)
 {
-	memcpy(value, PAYLOAD_HEAD(n), sz);
+	memcpy(value, ndr_get_field(n), sz);
 	n->offset += sz;
 	return 0;
 }
@@ -96,7 +99,7 @@ static __u16 ndr_read_int16(struct ndr *n)
 {
 	__u16 ret;
 
-	ret = le16_to_cpu(*(__le16 *)PAYLOAD_HEAD(n));
+	ret = le16_to_cpu(*(__le16 *)ndr_get_field(n));
 	n->offset += sizeof(__u16);
 	return ret;
 }
@@ -105,7 +108,7 @@ static __u32 ndr_read_int32(struct ndr *n)
 {
 	__u32 ret;
 
-	ret = le32_to_cpu(*(__le32 *)PAYLOAD_HEAD(n));
+	ret = le32_to_cpu(*(__le32 *)ndr_get_field(n));
 	n->offset += sizeof(__u32);
 	return ret;
 }
@@ -114,7 +117,7 @@ static __u64 ndr_read_int64(struct ndr *n)
 {
 	__u64 ret;
 
-	ret = le64_to_cpu(*(__le64 *)PAYLOAD_HEAD(n));
+	ret = le64_to_cpu(*(__le64 *)ndr_get_field(n));
 	n->offset += sizeof(__u64);
 	return ret;
 }