From: Pavel Shilovsky <piastryyy@xxxxxxxxx>
Signed-off-by: Pavel Shilovsky <piastryyy@xxxxxxxxx>
---
fs/cifs/connect.c | 19 +++++++++++++++++--
fs/cifs/nterr.h | 1 +
2 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index ab9e972..e46c2bd 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -825,10 +825,10 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
* into the payload for debugging purposes.
*/
#ifdef CONFIG_CIFS_SMB2
- if (server->is_smb2)
+ if (server->is_smb2) {
length = checkSMB2(smb2_buffer, smb2_buffer->MessageId,
server->total_read);
- else
+ } else
#endif
length = checkSMB(smb_buffer, smb_buffer->Mid,
server->total_read);
@@ -836,6 +836,21 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
cifs_dump_mem("Bad SMB: ", buf,
min_t(unsigned int, server->total_read, 48));
+#ifdef CONFIG_CIFS_SMB2
+ /*
+ * If we negotiate SMB2 protocol and get STATUS_PENDING - update
+ * the number of credits and skip it.
+ */
+ if (server->is_smb2 &&
+ le32_to_cpu(smb2_buffer->Status) == STATUS_PENDING) {
+ if (!length)
+ atomic_add(le16_to_cpu(smb2_buffer->CreditRequest),
+ &server->credits);
+ cERROR(1, "STATUS PENDING");
+ return -1;
+ }
+#endif
+
if (mid)
handle_mid(mid, server, buf, length);
diff --git a/fs/cifs/nterr.h b/fs/cifs/nterr.h
index 2572673..e80c0ef 100644
--- a/fs/cifs/nterr.h
+++ b/fs/cifs/nterr.h
@@ -40,6 +40,7 @@ extern const struct nt_err_code_struct nt_errs[];
#define ERROR_INSUFFICIENT_BUFFER 0x007a
#define STATUS_1804 0x070c
#define STATUS_NOTIFY_ENUM_DIR 0x010c
+#define STATUS_PENDING 0x00000103
/* Win32 Error codes extracted using a loop in smbclient then printing a
netmon sniff to a file. */
--
1.7.1
--
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