[5.15.y PATCH 1/4] ksmbd: use ksmbd_req_buf_next() in ksmbd_smb2_check_message()

[Namjae Jeon <linkinjeon@kernel.org>]

From: Ralph Boehme <slow@samba.org>

commit b83b27909e74d27796de19c802fbc3b65ab4ba9a upstream.

Use ksmbd_req_buf_next() in ksmbd_smb2_check_message().

Cc: Tom Talpey <tom@talpey.com>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Steve French <smfrench@gmail.com>
Cc: Hyunchul Lee <hyc.lee@gmail.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
---
 fs/ksmbd/smb2misc.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/fs/ksmbd/smb2misc.c b/fs/ksmbd/smb2misc.c
index 33a927df64f1..abc18af14f04 100644
--- a/fs/ksmbd/smb2misc.c
+++ b/fs/ksmbd/smb2misc.c
@@ -347,16 +347,11 @@ static int smb2_validate_credit_charge(struct ksmbd_conn *conn,
 
 int ksmbd_smb2_check_message(struct ksmbd_work *work)
 {
-	struct smb2_pdu *pdu = work->request_buf;
+	struct smb2_pdu *pdu = ksmbd_req_buf_next(work);
 	struct smb2_hdr *hdr = &pdu->hdr;
 	int command;
 	__u32 clc_len;  /* calculated length */
-	__u32 len = get_rfc1002_len(pdu);
-
-	if (work->next_smb2_rcv_hdr_off) {
-		pdu = ksmbd_req_buf_next(work);
-		hdr = &pdu->hdr;
-	}
+	__u32 len = get_rfc1002_len(work->request_buf);
 
 	if (le32_to_cpu(hdr->NextCommand) > 0)
 		len = le32_to_cpu(hdr->NextCommand);
-- 
2.25.1