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smb3: send CAP_DFS capability during session setup 

We had a report of a server which did not do a DFS referral
because the session setup Capabilities field was set to 0
(unlike negotiate protocol where we set CAP_DFS).  Better to
send it session setup in the capabilities as well (this also
more closely matches Windows client behavior).

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
CC: Stable <stable@vger.kernel.org>
This commit is contained in:
Steve French 2019-07-25 18:13:10 -05:00
parent 3edeb4a414
commit 8d33096a46
1 changed files with 5 additions and 0 deletions
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5
fs/cifs/smb2pdu.c
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@ -1196,7 +1196,12 @@ SMB2_sess_alloc_buffer(struct SMB2_sess_data *sess_data)
else else
req->SecurityMode = 0; req->SecurityMode = 0;
#ifdef CONFIG_CIFS_DFS_UPCALL
req->Capabilities = cpu_to_le32(SMB2_GLOBAL_CAP_DFS);
#else
req->Capabilities = 0; req->Capabilities = 0;
#endif /* DFS_UPCALL */
req->Channel = 0; /* MBZ */ req->Channel = 0; /* MBZ */
sess_data->iov[0].iov_base = (char *)req; sess_data->iov[0].iov_base = (char *)req;