* @wpos: write position for current frame
* @wsize: amount of data to write for current frame
* @wbuf: current write buffer
+ * @poll_pending_link: pending links to be polled per conn
* @poll_wait: array of wait_q's for various worker threads
- * @poll_waddr: ????
* @pt: poll state
* @rq: current read work
* @wq: current write work
*
*/
-void p9_conn_cancel(struct p9_conn *m, int err)
+static void p9_conn_cancel(struct p9_conn *m, int err)
{
struct p9_req_t *req, *rtmp;
unsigned long flags;
LIST_HEAD(cancel_list);
P9_DPRINTK(P9_DEBUG_ERROR, "mux %p err %d\n", m, err);
- m->err = err;
+
spin_lock_irqsave(&m->client->lock, flags);
+
+ if (m->err) {
+ spin_unlock_irqrestore(&m->client->lock, flags);
+ return;
+ }
+
+ m->err = err;
+
list_for_each_entry_safe(req, rtmp, &m->req_list, req_list) {
req->status = REQ_STATUS_ERROR;
if (!req->t_err)
spin_unlock_irqrestore(&m->client->lock, flags);
list_for_each_entry_safe(req, rtmp, &cancel_list, req_list) {
- list_del(&req->req_list);
P9_DPRINTK(P9_DEBUG_ERROR, "call back req %p\n", req);
+ list_del(&req->req_list);
p9_client_cb(m->client, req);
}
}
if (m->err < 0)
return;
- P9_DPRINTK(P9_DEBUG_MUX, "start mux %p pos %d\n", m, m->rpos);
+ P9_DPRINTK(P9_DEBUG_TRANS, "start mux %p pos %d\n", m, m->rpos);
if (!m->rbuf) {
m->rbuf = m->tmp_buf;
}
clear_bit(Rpending, &m->wsched);
- P9_DPRINTK(P9_DEBUG_MUX, "read mux %p pos %d size: %d = %d\n", m,
+ P9_DPRINTK(P9_DEBUG_TRANS, "read mux %p pos %d size: %d = %d\n", m,
m->rpos, m->rsize, m->rsize-m->rpos);
err = p9_fd_read(m->client, m->rbuf + m->rpos,
m->rsize - m->rpos);
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p got %d bytes\n", m, err);
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p got %d bytes\n", m, err);
if (err == -EAGAIN) {
clear_bit(Rworksched, &m->wsched);
return;
if ((!m->req) && (m->rpos == m->rsize)) { /* header read in */
u16 tag;
- P9_DPRINTK(P9_DEBUG_MUX, "got new header\n");
+ P9_DPRINTK(P9_DEBUG_TRANS, "got new header\n");
n = le32_to_cpu(*(__le32 *) m->rbuf); /* read packet size */
if (n >= m->client->msize) {
}
tag = le16_to_cpu(*(__le16 *) (m->rbuf+5)); /* read tag */
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p pkt: size: %d bytes tag: %d\n",
- m, n, tag);
+ P9_DPRINTK(P9_DEBUG_TRANS,
+ "mux %p pkt: size: %d bytes tag: %d\n", m, n, tag);
m->req = p9_tag_lookup(m->client, tag);
- if (!m->req) {
+ if (!m->req || (m->req->status != REQ_STATUS_SENT &&
+ m->req->status != REQ_STATUS_FLSH)) {
P9_DPRINTK(P9_DEBUG_ERROR, "Unexpected packet tag %d\n",
tag);
err = -EIO;
/* not an else because some packets (like clunk) have no payload */
if ((m->req) && (m->rpos == m->rsize)) { /* packet is read in */
- P9_DPRINTK(P9_DEBUG_MUX, "got new packet\n");
-
+ P9_DPRINTK(P9_DEBUG_TRANS, "got new packet\n");
+ spin_lock(&m->client->lock);
+ if (m->req->status != REQ_STATUS_ERROR)
+ m->req->status = REQ_STATUS_RCVD;
list_del(&m->req->req_list);
+ spin_unlock(&m->client->lock);
p9_client_cb(m->client, m->req);
-
m->rbuf = NULL;
m->rpos = 0;
m->rsize = 0;
n = p9_fd_poll(m->client, NULL);
if (n & POLLIN) {
- P9_DPRINTK(P9_DEBUG_MUX, "schedule read work %p\n", m);
+ P9_DPRINTK(P9_DEBUG_TRANS, "sched read work %p\n", m);
queue_work(p9_mux_wq, &m->rq);
} else
clear_bit(Rworksched, &m->wsched);
oldfs = get_fs();
set_fs(get_ds());
/* The cast to a user pointer is valid due to the set_fs() */
- ret = vfs_write(ts->wr, (void __user *)v, len, &ts->wr->f_pos);
+ ret = vfs_write(ts->wr, (__force void __user *)v, len, &ts->wr->f_pos);
set_fs(oldfs);
if (ret <= 0 && ret != -ERESTARTSYS && ret != -EAGAIN)
req = list_entry(m->unsent_req_list.next, struct p9_req_t,
req_list);
req->status = REQ_STATUS_SENT;
+ P9_DPRINTK(P9_DEBUG_TRANS, "move req %p\n", req);
list_move_tail(&req->req_list, &m->req_list);
m->wbuf = req->tc->sdata;
spin_unlock(&m->client->lock);
}
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p pos %d size %d\n", m, m->wpos,
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p pos %d size %d\n", m, m->wpos,
m->wsize);
clear_bit(Wpending, &m->wsched);
err = p9_fd_write(m->client, m->wbuf + m->wpos, m->wsize - m->wpos);
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p sent %d bytes\n", m, err);
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p sent %d bytes\n", m, err);
if (err == -EAGAIN) {
clear_bit(Wworksched, &m->wsched);
return;
n = p9_fd_poll(m->client, NULL);
if (n & POLLOUT) {
- P9_DPRINTK(P9_DEBUG_MUX, "schedule write work %p\n", m);
+ P9_DPRINTK(P9_DEBUG_TRANS, "sched write work %p\n", m);
queue_work(p9_mux_wq, &m->wq);
} else
clear_bit(Wworksched, &m->wsched);
return;
}
- if (!wait_address) {
- P9_DPRINTK(P9_DEBUG_ERROR, "no wait_address\n");
- pwait->wait_addr = ERR_PTR(-EIO);
- return;
- }
-
pwait->conn = m;
pwait->wait_addr = wait_address;
init_waitqueue_func_entry(&pwait->wait, p9_pollwake);
static struct p9_conn *p9_conn_create(struct p9_client *client)
{
- int i, n;
+ int n;
struct p9_conn *m;
- P9_DPRINTK(P9_DEBUG_MUX, "client %p msize %d\n", client, client->msize);
+ P9_DPRINTK(P9_DEBUG_TRANS, "client %p msize %d\n", client,
+ client->msize);
m = kzalloc(sizeof(struct p9_conn), GFP_KERNEL);
if (!m)
return ERR_PTR(-ENOMEM);
n = p9_fd_poll(client, &m->pt);
if (n & POLLIN) {
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p can read\n", m);
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p can read\n", m);
set_bit(Rpending, &m->wsched);
}
if (n & POLLOUT) {
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p can write\n", m);
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p can write\n", m);
set_bit(Wpending, &m->wsched);
}
- for (i = 0; i < ARRAY_SIZE(m->poll_wait); i++) {
- if (IS_ERR(m->poll_wait[i].wait_addr)) {
- p9_mux_poll_stop(m);
- kfree(m);
- /* return the error code */
- return (void *)m->poll_wait[i].wait_addr;
- }
- }
-
return m;
}
n = p9_fd_poll(m->client, NULL);
if (n < 0 || n & (POLLERR | POLLHUP | POLLNVAL)) {
- P9_DPRINTK(P9_DEBUG_MUX, "error mux %p err %d\n", m, n);
+ P9_DPRINTK(P9_DEBUG_TRANS, "error mux %p err %d\n", m, n);
if (n >= 0)
n = -ECONNRESET;
p9_conn_cancel(m, n);
if (n & POLLIN) {
set_bit(Rpending, &m->wsched);
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p can read\n", m);
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p can read\n", m);
if (!test_and_set_bit(Rworksched, &m->wsched)) {
- P9_DPRINTK(P9_DEBUG_MUX, "schedule read work %p\n", m);
+ P9_DPRINTK(P9_DEBUG_TRANS, "sched read work %p\n", m);
queue_work(p9_mux_wq, &m->rq);
}
}
if (n & POLLOUT) {
set_bit(Wpending, &m->wsched);
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p can write\n", m);
- if ((m->wsize || !list_empty(&m->unsent_req_list))
- && !test_and_set_bit(Wworksched, &m->wsched)) {
- P9_DPRINTK(P9_DEBUG_MUX, "schedule write work %p\n", m);
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p can write\n", m);
+ if ((m->wsize || !list_empty(&m->unsent_req_list)) &&
+ !test_and_set_bit(Wworksched, &m->wsched)) {
+ P9_DPRINTK(P9_DEBUG_TRANS, "sched write work %p\n", m);
queue_work(p9_mux_wq, &m->wq);
}
}
struct p9_trans_fd *ts = client->trans;
struct p9_conn *m = ts->conn;
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p task %p tcall %p id %d\n", m, current,
- req->tc, req->tc->id);
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p task %p tcall %p id %d\n", m,
+ current, req->tc, req->tc->id);
if (m->err < 0)
return m->err;
-#ifdef CONFIG_NET_9P_DEBUG
- if ((p9_debug_level&P9_DEBUG_FCALL) == P9_DEBUG_FCALL) {
- char buf[150];
-
- p9_printfcall(buf, sizeof(buf), req->tc, client->dotu);
- printk(KERN_NOTICE "<<< %p %s\n", m, buf);
- }
-#endif
-
- req->status = REQ_STATUS_UNSENT;
-
spin_lock(&client->lock);
+ req->status = REQ_STATUS_UNSENT;
list_add_tail(&req->req_list, &m->unsent_req_list);
spin_unlock(&client->lock);
static int p9_fd_cancel(struct p9_client *client, struct p9_req_t *req)
{
- struct p9_trans_fd *ts = client->trans;
- struct p9_conn *m = ts->conn;
+ int ret = 1;
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p req %p tag %d\n", m, req, req->tag);
+ P9_DPRINTK(P9_DEBUG_TRANS, "client %p req %p\n", client, req);
spin_lock(&client->lock);
- list_del(&req->req_list);
- spin_unlock(&client->lock);
-
- /* if a response was received for a request, do nothing */
- if (req->rc || req->t_err) {
- P9_DPRINTK(P9_DEBUG_MUX,
- "mux %p req %p response already received\n", m, req);
- return 0;
- }
if (req->status == REQ_STATUS_UNSENT) {
+ list_del(&req->req_list);
req->status = REQ_STATUS_FLSHD;
- return 0;
- }
+ ret = 0;
+ } else if (req->status == REQ_STATUS_SENT)
+ req->status = REQ_STATUS_FLSH;
+
+ spin_unlock(&client->lock);
- return 1;
+ return ret;
}
/**
- * parse_options - parse mount options into session structure
- * @options: options string passed from mount
- * @opts: transport-specific structure to parse options into
+ * parse_opts - parse mount options into p9_fd_opts structure
+ * @params: options string passed from mount
+ * @opts: fd transport-specific structure to parse options into
*
* Returns 0 upon success, -ERRNO upon failure
*/
if (!*p)
continue;
token = match_token(p, tokens, args);
- r = match_int(&args[0], &option);
- if (r < 0) {
- P9_DPRINTK(P9_DEBUG_ERROR,
- "integer field, but no integer?\n");
- ret = r;
- continue;
+ if (token != Opt_err) {
+ r = match_int(&args[0], &option);
+ if (r < 0) {
+ P9_DPRINTK(P9_DEBUG_ERROR,
+ "integer field, but no integer?\n");
+ ret = r;
+ continue;
+ }
}
switch (token) {
case Opt_port:
static void p9_conn_destroy(struct p9_conn *m)
{
- P9_DPRINTK(P9_DEBUG_MUX, "mux %p prev %p next %p\n", m,
+ P9_DPRINTK(P9_DEBUG_TRANS, "mux %p prev %p next %p\n", m,
m->mux_list.prev, m->mux_list.next);
p9_mux_poll_stop(m);
{
unsigned long flags;
- P9_DPRINTK(P9_DEBUG_MUX, "start %p\n", current);
+ P9_DPRINTK(P9_DEBUG_TRANS, "start %p\n", current);
repeat:
spin_lock_irqsave(&p9_poll_lock, flags);
while (!list_empty(&p9_poll_pending_list)) {
set_current_state(TASK_INTERRUPTIBLE);
if (list_empty(&p9_poll_pending_list)) {
- P9_DPRINTK(P9_DEBUG_MUX, "sleeping...\n");
+ P9_DPRINTK(P9_DEBUG_TRANS, "sleeping...\n");
schedule();
}
__set_current_state(TASK_RUNNING);
if (!kthread_should_stop())
goto repeat;
- P9_DPRINTK(P9_DEBUG_MUX, "finish\n");
+ P9_DPRINTK(P9_DEBUG_TRANS, "finish\n");
return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff