From ec2e4523fdba88317e06d0c7a88af3a0860447fc Mon Sep 17 00:00:00 2001 From: Pavel Shilovsky Date: Tue, 27 Dec 2011 16:12:43 +0400 Subject: CIFS: Add capability to send SMB2 negotiate message and add negotiate request type to let set_credits know that we are only on negotiate stage and no need to make a decision about disabling echos and oplocks. Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French --- fs/cifs/smb2ops.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) (limited to 'fs/cifs/smb2ops.c') diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index c6f81541a63..2b5232b4f7e 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -61,7 +61,7 @@ smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add, val = server->ops->get_credits_field(server, optype); *val += add; server->in_flight--; - if (server->in_flight == 0) + if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP) rc = change_conf(server); spin_unlock(&server->req_lock); wake_up(&server->request_q); @@ -139,6 +139,24 @@ smb2_dump_detail(void *buf) #endif } +static bool +smb2_need_neg(struct TCP_Server_Info *server) +{ + return server->max_read == 0; +} + +static int +smb2_negotiate(const unsigned int xid, struct cifs_ses *ses) +{ + int rc; + ses->server->CurrentMid = 0; + rc = SMB2_negotiate(xid, ses); + /* BB we probably don't need to retry with modern servers */ + if (rc == -EAGAIN) + rc = -EHOSTDOWN; + return rc; +} + struct smb_version_operations smb21_operations = { .setup_request = smb2_setup_request, .check_receive = smb2_check_receive, @@ -150,6 +168,8 @@ struct smb_version_operations smb21_operations = { .find_mid = smb2_find_mid, .check_message = smb2_check_message, .dump_detail = smb2_dump_detail, + .need_neg = smb2_need_neg, + .negotiate = smb2_negotiate, }; struct smb_version_values smb21_values = { -- cgit v1.2.3-70-g09d2