1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2014 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Dispatch function for SMB2_CANCEL
*/
#include <smbsrv/smb2_kproto.h>
static void smb2sr_cancel_async(smb_request_t *);
static void smb2sr_cancel_sync(smb_request_t *);
/*
* This handles an SMB2_CANCEL request when seen in the reader.
* (See smb2sr_newrq) Handle this immediately, rather than
* going through the normal taskq dispatch mechanism.
* Note that Cancel does NOT get a response.
*/
int
smb2sr_newrq_cancel(smb_request_t *sr)
{
int rc;
/*
* Decode the header
*/
if ((rc = smb2_decode_header(sr)) != 0)
return (rc);
if (sr->smb2_hdr_flags & SMB2_FLAGS_ASYNC_COMMAND)
smb2sr_cancel_async(sr);
else
smb2sr_cancel_sync(sr);
return (0);
}
static void
smb2sr_cancel_sync(smb_request_t *sr)
{
struct smb_request *req;
struct smb_session *session = sr->session;
int cnt = 0;
smb_slist_enter(&session->s_req_list);
req = smb_slist_head(&session->s_req_list);
while (req) {
ASSERT(req->sr_magic == SMB_REQ_MAGIC);
if ((req != sr) &&
(req->smb2_messageid == sr->smb2_messageid)) {
smb_request_cancel(req);
cnt++;
}
req = smb_slist_next(&session->s_req_list, req);
}
if (cnt != 1) {
DTRACE_PROBE2(smb2__cancel__error,
uint64_t, sr->smb2_messageid, int, cnt);
}
smb_slist_exit(&session->s_req_list);
}
static void
smb2sr_cancel_async(smb_request_t *sr)
{
struct smb_request *req;
struct smb_session *session = sr->session;
int cnt = 0;
smb_slist_enter(&session->s_req_list);
req = smb_slist_head(&session->s_req_list);
while (req) {
ASSERT(req->sr_magic == SMB_REQ_MAGIC);
if ((req != sr) &&
(req->smb2_async_id == sr->smb2_async_id)) {
smb_request_cancel(req);
cnt++;
}
req = smb_slist_next(&session->s_req_list, req);
}
if (cnt != 1) {
DTRACE_PROBE2(smb2__cancel__error,
uint64_t, sr->smb2_async_id, int, cnt);
}
smb_slist_exit(&session->s_req_list);
}
|
