/*
* 2. Allocate the buffer. For details, see sched.c:rpc_malloc.
* (Note: buffer memory is freed in rpc_task_release).
*/
static void
call_allocate(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
unsigned int bufsiz;
dprintk("RPC: %4d call_allocate (status %d)\n",
task->tk_pid, task->tk_status);
task->tk_action = call_encode;
if (task->tk_buffer)
return;
/* FIXME: compute buffer requirements more exactly using
* auth->au_wslack */
bufsiz = rpcproc_bufsiz(clnt, task->tk_msg.rpc_proc) + RPC_SLACK_SPACE;
if ((task->tk_buffer = rpc_malloc(task, bufsiz << 1)) != NULL)
return;
printk(KERN_INFO "RPC: buffer allocation failed for task %p\n", task);
if (RPC_IS_ASYNC(task) || !(task->tk_client->cl_intr && signalled())) {
xprt_release(task);
task->tk_action = call_reserve;
rpc_delay(task, HZ>>4);
return;
}
/*
* 2. Allocate the buffer. For details, see sched.c:rpc_malloc.
* (Note: buffer memory is freed in rpc_task_release).
*/
static void
call_allocate(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
unsigned int bufsiz;
dprintk("RPC: %4d call_allocate (status %d)\n",
task->tk_pid, task->tk_status);
task->tk_action = call_encode;
if (task->tk_buffer)
return;
/* FIXME: compute buffer requirements more exactly using
* auth->au_wslack */
bufsiz = rpcproc_bufsiz(clnt, task->tk_proc) + RPC_SLACK_SPACE;
if ((task->tk_buffer = rpc_malloc(task, bufsiz)) != NULL)
return;
printk("RPC: buffer allocation failed for task %p\n", task);
if (!signalled()) {
xprt_release(task);
task->tk_action = call_reserve;
rpc_delay(task, HZ);
return;
}
rpc_exit(task, -ERESTARTSYS);
}
/*
* 3. Encode arguments of an RPC call
*/
static void
call_encode(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
struct rpc_rqst *req = task->tk_rqstp;
unsigned int bufsiz;
kxdrproc_t encode;
int status;
u32 *p;
dprintk("RPC: %4d call_encode (status %d)\n",
task->tk_pid, task->tk_status);
task->tk_action = call_transmit;
/* Default buffer setup */
bufsiz = rpcproc_bufsiz(clnt, task->tk_proc)+RPC_SLACK_SPACE;
req->rq_svec[0].iov_base = task->tk_buffer;
req->rq_svec[0].iov_len = bufsiz;
req->rq_slen = 0;
req->rq_snr = 1;
req->rq_rvec[0].iov_base = task->tk_buffer;
req->rq_rvec[0].iov_len = bufsiz;
req->rq_rlen = bufsiz;
req->rq_rnr = 1;
if (task->tk_proc > clnt->cl_maxproc) {
printk(KERN_WARNING "%s (vers %d): bad procedure number %d\n",
clnt->cl_protname, clnt->cl_vers, task->tk_proc);
rpc_exit(task, -EIO);
return;
}
/* Zero buffer so we have automatic zero-padding of opaque & string */
memset(task->tk_buffer, 0, bufsiz);
/* Encode header and provided arguments */
encode = rpcproc_encode(clnt, task->tk_proc);
if (!(p = call_header(task))) {
printk("RPC: call_header failed, exit EIO\n");
rpc_exit(task, -EIO);
} else
if ((status = encode(req, p, task->tk_argp)) < 0) {
printk(KERN_WARNING "%s: can't encode arguments: %d\n",
clnt->cl_protname, -status);
rpc_exit(task, status);
}
}
