#define CIFS_PORT 445
#define RFC1001_PORT 139
+/* SMB echo "timeout" -- FIXME: tunable? */
+#define SMB_ECHO_INTERVAL (60 * HZ)
+
extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
unsigned char *p24);
/* before reconnecting the tcp session, mark the smb session (uid)
and the tid bad so they are not used until reconnected */
+ cFYI(1, "%s: marking sessions and tcons for reconnect", __func__);
spin_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
}
}
spin_unlock(&cifs_tcp_ses_lock);
+
/* do not want to be sending data on a socket we are freeing */
+ cFYI(1, "%s: tearing down socket", __func__);
mutex_lock(&server->srv_mutex);
if (server->ssocket) {
cFYI(1, "State: 0x%x Flags: 0x%lx", server->ssocket->state,
kfree(server->session_key.response);
server->session_key.response = NULL;
server->session_key.len = 0;
+ mutex_unlock(&server->srv_mutex);
+ /* mark submitted MIDs for retry and issue callback */
+ cFYI(1, "%s: issuing mid callbacks", __func__);
spin_lock(&GlobalMid_Lock);
- list_for_each(tmp, &server->pending_mid_q) {
- mid_entry = list_entry(tmp, struct
- mid_q_entry,
- qhead);
- if (mid_entry->midState == MID_REQUEST_SUBMITTED) {
- /* Mark other intransit requests as needing
- retry so we do not immediately mark the
- session bad again (ie after we reconnect
- below) as they timeout too */
+ list_for_each_safe(tmp, tmp2, &server->pending_mid_q) {
+ mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
+ if (mid_entry->midState == MID_REQUEST_SUBMITTED)
mid_entry->midState = MID_RETRY_NEEDED;
- }
+ list_del_init(&mid_entry->qhead);
+ mid_entry->callback(mid_entry);
}
spin_unlock(&GlobalMid_Lock);
- mutex_unlock(&server->srv_mutex);
while ((server->tcpStatus != CifsExiting) &&
(server->tcpStatus != CifsGood)) {
if (server->tcpStatus != CifsExiting)
server->tcpStatus = CifsGood;
spin_unlock(&GlobalMid_Lock);
- /* atomic_set(&server->inFlight,0);*/
- wake_up(&server->response_q);
}
}
+
return rc;
}
}
+static void
+cifs_echo_request(struct work_struct *work)
+{
+ int rc;
+ struct TCP_Server_Info *server = container_of(work,
+ struct TCP_Server_Info, echo.work);
+
+ /* no need to ping if we got a response recently */
+ if (time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
+ goto requeue_echo;
+
+ rc = CIFSSMBEcho(server);
+ if (rc)
+ cFYI(1, "Unable to send echo request to server: %s",
+ server->hostname);
+
+requeue_echo:
+ queue_delayed_work(system_nrt_wq, &server->echo, SMB_ECHO_INTERVAL);
+}
+
static int
cifs_demultiplex_thread(struct TCP_Server_Info *server)
{
struct msghdr smb_msg;
struct kvec iov;
struct socket *csocket = server->ssocket;
- struct list_head *tmp;
- struct cifsSesInfo *ses;
+ struct list_head *tmp, *tmp2;
struct task_struct *task_to_wake = NULL;
struct mid_q_entry *mid_entry;
char temp;
continue;
}
-
- task_to_wake = NULL;
+ mid_entry = NULL;
spin_lock(&GlobalMid_Lock);
- list_for_each(tmp, &server->pending_mid_q) {
+ list_for_each_safe(tmp, tmp2, &server->pending_mid_q) {
mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
if ((mid_entry->mid == smb_buffer->Mid) &&
mid_entry->resp_buf = smb_buffer;
mid_entry->largeBuf = isLargeBuf;
multi_t2_fnd:
- task_to_wake = mid_entry->tsk;
mid_entry->midState = MID_RESPONSE_RECEIVED;
+ list_del_init(&mid_entry->qhead);
+ mid_entry->callback(mid_entry);
#ifdef CONFIG_CIFS_STATS2
mid_entry->when_received = jiffies;
#endif
server->lstrp = jiffies;
break;
}
+ mid_entry = NULL;
}
spin_unlock(&GlobalMid_Lock);
- if (task_to_wake) {
+
+ if (mid_entry != NULL) {
/* Was previous buf put in mpx struct for multi-rsp? */
if (!isMultiRsp) {
/* smb buffer will be freed by user thread */
else
smallbuf = NULL;
}
- wake_up_process(task_to_wake);
} else if (!is_valid_oplock_break(smb_buffer, server) &&
!isMultiRsp) {
cERROR(1, "No task to wake, unknown frame received! "
- "NumMids %d", midCount.counter);
+ "NumMids %d", atomic_read(&midCount));
cifs_dump_mem("Received Data is: ", (char *)smb_buffer,
sizeof(struct smb_hdr));
#ifdef CONFIG_CIFS_DEBUG2
if (smallbuf) /* no sense logging a debug message if NULL */
cifs_small_buf_release(smallbuf);
- /*
- * BB: we shouldn't have to do any of this. It shouldn't be
- * possible to exit from the thread with active SMB sessions
- */
- spin_lock(&cifs_tcp_ses_lock);
- if (list_empty(&server->pending_mid_q)) {
- /* loop through server session structures attached to this and
- mark them dead */
- list_for_each(tmp, &server->smb_ses_list) {
- ses = list_entry(tmp, struct cifsSesInfo,
- smb_ses_list);
- ses->status = CifsExiting;
- ses->server = NULL;
- }
- spin_unlock(&cifs_tcp_ses_lock);
- } else {
- /* although we can not zero the server struct pointer yet,
- since there are active requests which may depnd on them,
- mark the corresponding SMB sessions as exiting too */
- list_for_each(tmp, &server->smb_ses_list) {
- ses = list_entry(tmp, struct cifsSesInfo,
- smb_ses_list);
- ses->status = CifsExiting;
- }
-
+ if (!list_empty(&server->pending_mid_q)) {
spin_lock(&GlobalMid_Lock);
- list_for_each(tmp, &server->pending_mid_q) {
- mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
- if (mid_entry->midState == MID_REQUEST_SUBMITTED) {
- cFYI(1, "Clearing Mid 0x%x - waking up ",
+ list_for_each_safe(tmp, tmp2, &server->pending_mid_q) {
+ mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
+ cFYI(1, "Clearing Mid 0x%x - issuing callback",
mid_entry->mid);
- task_to_wake = mid_entry->tsk;
- if (task_to_wake)
- wake_up_process(task_to_wake);
- }
+ list_del_init(&mid_entry->qhead);
+ mid_entry->callback(mid_entry);
}
spin_unlock(&GlobalMid_Lock);
- spin_unlock(&cifs_tcp_ses_lock);
/* 1/8th of sec is more than enough time for them to exit */
msleep(125);
}
coming home not much else we can do but free the memory */
}
- /* last chance to mark ses pointers invalid
- if there are any pointing to this (e.g
- if a crazy root user tried to kill cifsd
- kernel thread explicitly this might happen) */
- /* BB: This shouldn't be necessary, see above */
- spin_lock(&cifs_tcp_ses_lock);
- list_for_each(tmp, &server->smb_ses_list) {
- ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
- ses->server = NULL;
- }
- spin_unlock(&cifs_tcp_ses_lock);
-
kfree(server->hostname);
task_to_wake = xchg(&server->tsk, NULL);
kfree(server);
} else if (!strnicmp(data, "uid", 3) && value && *value) {
vol->linux_uid = simple_strtoul(value, &value, 0);
uid_specified = true;
+ } else if (!strnicmp(data, "cruid", 5) && value && *value) {
+ vol->cred_uid = simple_strtoul(value, &value, 0);
} else if (!strnicmp(data, "forceuid", 8)) {
override_uid = 1;
} else if (!strnicmp(data, "noforceuid", 10)) {
list_del_init(&server->tcp_ses_list);
spin_unlock(&cifs_tcp_ses_lock);
+ cancel_delayed_work_sync(&server->echo);
+
spin_lock(&GlobalMid_Lock);
server->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
tcp_ses->sequence_number = 0;
INIT_LIST_HEAD(&tcp_ses->tcp_ses_list);
INIT_LIST_HEAD(&tcp_ses->smb_ses_list);
+ INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request);
/*
* at this point we are the only ones with the pointer
cifs_fscache_get_client_cookie(tcp_ses);
+ /* queue echo request delayed work */
+ queue_delayed_work(system_nrt_wq, &tcp_ses->echo, SMB_ECHO_INTERVAL);
+
return tcp_ses;
out_err_crypto_release:
bcc_ptr++; /* skip password */
/* already aligned so no need to do it below */
} else {
- pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
+ pSMB->PasswordLength = cpu_to_le16(CIFS_AUTH_RESP_SIZE);
/* BB FIXME add code to fail this if NTLMv2 or Kerberos
specified as required (when that support is added to
the vfs in the future) as only NTLM or the much
#endif /* CIFS_WEAK_PW_HASH */
SMBNTencrypt(tcon->password, ses->server->cryptkey, bcc_ptr);
- bcc_ptr += CIFS_SESS_KEY_SIZE;
+ bcc_ptr += CIFS_AUTH_RESP_SIZE;
if (ses->capabilities & CAP_UNICODE) {
/* must align unicode strings */
*bcc_ptr = 0; /* null byte password */
projects / cascardo / linux.git / blobdiff