From: Steve French <smfrench@gmail.com>
Date: Wed, 24 Jan 2018 23:07:41 -0600
Subject: [PATCH] Cleanup some minor endian issues in smb3 rdma
Git-commit: 2026b06e9ce8521dae1a71654dc5a39e7ce3b871
Patch-mainline: v4.15
References: bsc#1144333

Minor cleanup of some sparse warnings (including a few misc
endian fixes for the new smb3 rdma code)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Acked-by: Aurelien Aptel <aaptel@suse.com>
---
 fs/cifs/smb2pdu.c   | 22 +++++++++++-----------
 fs/cifs/smb2pdu.h   | 14 +++++++-------
 fs/cifs/smbdirect.c |  5 +++--
 3 files changed, 21 insertions(+), 20 deletions(-)

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 17b7f3aed195..63778ac22fd9 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2463,13 +2463,13 @@ smb2_new_read_req(void **buf, unsigned int *total_len,
 		if (need_invalidate)
 			req->Channel = SMB2_CHANNEL_RDMA_V1;
 		req->ReadChannelInfoOffset =
-			offsetof(struct smb2_read_plain_req, Buffer);
+			cpu_to_le16(offsetof(struct smb2_read_plain_req, Buffer));
 		req->ReadChannelInfoLength =
-			sizeof(struct smbd_buffer_descriptor_v1);
+			cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1));
 		v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0];
-		v1->offset = rdata->mr->mr->iova;
-		v1->token = rdata->mr->mr->rkey;
-		v1->length = rdata->mr->mr->length;
+		v1->offset = cpu_to_le64(rdata->mr->mr->iova);
+		v1->token = cpu_to_le32(rdata->mr->mr->rkey);
+		v1->length = cpu_to_le32(rdata->mr->mr->length);
 
 		*total_len += sizeof(*v1) - 1;
 	}
@@ -2840,18 +2840,18 @@ smb2_async_writev(struct cifs_writedata *wdata,
 		req->Length = 0;
 		req->DataOffset = 0;
 		req->RemainingBytes =
-			(wdata->nr_pages-1)*PAGE_SIZE + wdata->tailsz;
+			cpu_to_le32((wdata->nr_pages-1)*PAGE_SIZE + wdata->tailsz);
 		req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE;
 		if (need_invalidate)
 			req->Channel = SMB2_CHANNEL_RDMA_V1;
 		req->WriteChannelInfoOffset =
-			offsetof(struct smb2_write_req, Buffer);
+			cpu_to_le16(offsetof(struct smb2_write_req, Buffer));
 		req->WriteChannelInfoLength =
-			sizeof(struct smbd_buffer_descriptor_v1);
+			cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1));
 		v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0];
-		v1->offset = wdata->mr->mr->iova;
-		v1->token = wdata->mr->mr->rkey;
-		v1->length = wdata->mr->mr->length;
+		v1->offset = cpu_to_le64(wdata->mr->mr->iova);
+		v1->token = cpu_to_le32(wdata->mr->mr->rkey);
+		v1->length = cpu_to_le32(wdata->mr->mr->length);
 	}
 #endif
 	/* 4 for rfc1002 length field and 1 for Buffer */
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 19d34881815f..6eb9f9691ed4 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -830,9 +830,9 @@ struct smb2_flush_rsp {
 #define SMB2_READFLAG_READ_UNBUFFERED	0x01
 
 /* Channel field for read and write: exactly one of following flags can be set*/
-#define SMB2_CHANNEL_NONE		0x00000000
-#define SMB2_CHANNEL_RDMA_V1		0x00000001 /* SMB3 or later */
-#define SMB2_CHANNEL_RDMA_V1_INVALIDATE 0x00000002 /* SMB3.02 or later */
+#define SMB2_CHANNEL_NONE	cpu_to_le32(0x00000000)
+#define SMB2_CHANNEL_RDMA_V1	cpu_to_le32(0x00000001) /* SMB3 or later */
+#define SMB2_CHANNEL_RDMA_V1_INVALIDATE cpu_to_le32(0x00000002) /* >= SMB3.02 */
 
 /* SMB2 read request without RFC1001 length at the beginning */
 struct smb2_read_plain_req {
@@ -847,8 +847,8 @@ struct smb2_read_plain_req {
 	__le32 MinimumCount;
 	__le32 Channel; /* MBZ except for SMB3 or later */
 	__le32 RemainingBytes;
-	__le16 ReadChannelInfoOffset; /* Reserved MBZ */
-	__le16 ReadChannelInfoLength; /* Reserved MBZ */
+	__le16 ReadChannelInfoOffset;
+	__le16 ReadChannelInfoLength;
 	__u8   Buffer[1];
 } __packed;
 
@@ -877,8 +877,8 @@ struct smb2_write_req {
 	__u64  VolatileFileId; /* opaque endianness */
 	__le32 Channel; /* Reserved MBZ */
 	__le32 RemainingBytes;
-	__le16 WriteChannelInfoOffset; /* Reserved MBZ */
-	__le16 WriteChannelInfoLength; /* Reserved MBZ */
+	__le16 WriteChannelInfoOffset;
+	__le16 WriteChannelInfoLength;
 	__le32 Flags;
 	__u8   Buffer[1];
 } __packed;
diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
index f9234ed83a60..5130492847eb 100644
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -1855,7 +1855,8 @@ struct smbd_connection *smbd_get_connection(
  * consumed. But this will require more changes to upper layer code, and also
  * need to consider packet boundaries while they still being reassembled.
  */
-int smbd_recv_buf(struct smbd_connection *info, char *buf, unsigned int size)
+static int smbd_recv_buf(struct smbd_connection *info, char *buf,
+		unsigned int size)
 {
 	struct smbd_response *response;
 	struct smbd_data_transfer *data_transfer;
@@ -1992,7 +1993,7 @@ int smbd_recv_buf(struct smbd_connection *info, char *buf, unsigned int size)
  * to_read: the length of data to read
  * return value: actual data read
  */
-int smbd_recv_page(struct smbd_connection *info,
+static int smbd_recv_page(struct smbd_connection *info,
 		struct page *page, unsigned int to_read)
 {
 	int ret;
-- 
2.16.4