#include <linux/module.h>
#include <linux/types.h>
+#include <linux/kallsyms.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/utsname.h>
#include <linux/workqueue.h>
+#include <linux/in6.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/sunrpc/metrics.h>
-#define RPC_SLACK_SPACE (1024) /* total overkill */
-
#ifdef RPC_DEBUG
# define RPCDBG_FACILITY RPCDBG_CALL
#endif
+#define dprint_status(t) \
+ dprintk("RPC: %5u %s (status %d)\n", t->tk_pid, \
+ __func__, t->tk_status)
+
+/*
+ * All RPC clients are linked into this list
+ */
+static LIST_HEAD(all_clients);
+static DEFINE_SPINLOCK(rpc_client_lock);
+
static DECLARE_WAIT_QUEUE_HEAD(destroy_wait);
static void call_reserve(struct rpc_task *task);
static void call_reserveresult(struct rpc_task *task);
static void call_allocate(struct rpc_task *task);
-static void call_encode(struct rpc_task *task);
static void call_decode(struct rpc_task *task);
static void call_bind(struct rpc_task *task);
static void call_bind_status(struct rpc_task *task);
static void call_timeout(struct rpc_task *task);
static void call_connect(struct rpc_task *task);
static void call_connect_status(struct rpc_task *task);
-static __be32 * call_header(struct rpc_task *task);
-static __be32 * call_verify(struct rpc_task *task);
+static __be32 *rpc_encode_header(struct rpc_task *task);
+static __be32 *rpc_verify_header(struct rpc_task *task);
+static int rpc_ping(struct rpc_clnt *clnt, int flags);
+
+static void rpc_register_client(struct rpc_clnt *clnt)
+{
+ spin_lock(&rpc_client_lock);
+ list_add(&clnt->cl_clients, &all_clients);
+ spin_unlock(&rpc_client_lock);
+}
+
+static void rpc_unregister_client(struct rpc_clnt *clnt)
+{
+ spin_lock(&rpc_client_lock);
+ list_del(&clnt->cl_clients);
+ spin_unlock(&rpc_client_lock);
+}
static int
rpc_setup_pipedir(struct rpc_clnt *clnt, char *dir_name)
}
}
-static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, struct rpc_program *program, u32 vers, rpc_authflavor_t flavor)
+static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt)
{
+ struct rpc_program *program = args->program;
struct rpc_version *version;
struct rpc_clnt *clnt = NULL;
struct rpc_auth *auth;
int err;
- int len;
+ size_t len;
+
+ /* sanity check the name before trying to print it */
+ err = -EINVAL;
+ len = strlen(args->servername);
+ if (len > RPC_MAXNETNAMELEN)
+ goto out_no_rpciod;
+ len++;
- dprintk("RPC: creating %s client for %s (xprt %p)\n",
- program->name, servname, xprt);
+ dprintk("RPC: creating %s client for %s (xprt %p)\n",
+ program->name, args->servername, xprt);
+ err = rpciod_up();
+ if (err)
+ goto out_no_rpciod;
err = -EINVAL;
if (!xprt)
goto out_no_xprt;
- if (vers >= program->nrvers || !(version = program->version[vers]))
+
+ if (args->version >= program->nrvers)
+ goto out_err;
+ version = program->version[args->version];
+ if (version == NULL)
goto out_err;
err = -ENOMEM;
clnt = kzalloc(sizeof(*clnt), GFP_KERNEL);
if (!clnt)
goto out_err;
- atomic_set(&clnt->cl_users, 0);
- atomic_set(&clnt->cl_count, 1);
clnt->cl_parent = clnt;
clnt->cl_server = clnt->cl_inline_name;
- len = strlen(servname) + 1;
if (len > sizeof(clnt->cl_inline_name)) {
char *buf = kmalloc(len, GFP_KERNEL);
- if (buf != 0)
+ if (buf != NULL)
clnt->cl_server = buf;
else
len = sizeof(clnt->cl_inline_name);
}
- strlcpy(clnt->cl_server, servname, len);
+ strlcpy(clnt->cl_server, args->servername, len);
clnt->cl_xprt = xprt;
clnt->cl_procinfo = version->procs;
clnt->cl_maxproc = version->nrprocs;
clnt->cl_protname = program->name;
- clnt->cl_prog = program->number;
+ clnt->cl_prog = args->prognumber ? : program->number;
clnt->cl_vers = version->number;
clnt->cl_stats = program->stats;
clnt->cl_metrics = rpc_alloc_iostats(clnt);
if (clnt->cl_metrics == NULL)
goto out_no_stats;
clnt->cl_program = program;
+ INIT_LIST_HEAD(&clnt->cl_tasks);
+ spin_lock_init(&clnt->cl_lock);
if (!xprt_bound(clnt->cl_xprt))
clnt->cl_autobind = 1;
+ clnt->cl_timeout = xprt->timeout;
+ if (args->timeout != NULL) {
+ memcpy(&clnt->cl_timeout_default, args->timeout,
+ sizeof(clnt->cl_timeout_default));
+ clnt->cl_timeout = &clnt->cl_timeout_default;
+ }
+
clnt->cl_rtt = &clnt->cl_rtt_default;
- rpc_init_rtt(&clnt->cl_rtt_default, xprt->timeout.to_initval);
+ rpc_init_rtt(&clnt->cl_rtt_default, clnt->cl_timeout->to_initval);
+
+ kref_init(&clnt->cl_kref);
err = rpc_setup_pipedir(clnt, program->pipe_dir_name);
if (err < 0)
goto out_no_path;
- auth = rpcauth_create(flavor, clnt);
+ auth = rpcauth_create(args->authflavor, clnt);
if (IS_ERR(auth)) {
printk(KERN_INFO "RPC: Couldn't create auth handle (flavor %u)\n",
- flavor);
+ args->authflavor);
err = PTR_ERR(auth);
goto out_no_auth;
}
/* save the nodename */
- clnt->cl_nodelen = strlen(utsname()->nodename);
+ clnt->cl_nodelen = strlen(init_utsname()->nodename);
if (clnt->cl_nodelen > UNX_MAXNODENAME)
clnt->cl_nodelen = UNX_MAXNODENAME;
- memcpy(clnt->cl_nodename, utsname()->nodename, clnt->cl_nodelen);
+ memcpy(clnt->cl_nodename, init_utsname()->nodename, clnt->cl_nodelen);
+ rpc_register_client(clnt);
return clnt;
out_no_auth:
out_err:
xprt_put(xprt);
out_no_xprt:
+ rpciod_down();
+out_no_rpciod:
return ERR_PTR(err);
}
{
struct rpc_xprt *xprt;
struct rpc_clnt *clnt;
+ struct xprt_create xprtargs = {
+ .ident = args->protocol,
+ .srcaddr = args->saddress,
+ .dstaddr = args->address,
+ .addrlen = args->addrsize,
+ };
+ char servername[48];
- xprt = xprt_create_transport(args->protocol, args->address,
- args->addrsize, args->timeout);
+ /*
+ * If the caller chooses not to specify a hostname, whip
+ * up a string representation of the passed-in address.
+ */
+ if (args->servername == NULL) {
+ servername[0] = '\0';
+ switch (args->address->sa_family) {
+ case AF_INET: {
+ struct sockaddr_in *sin =
+ (struct sockaddr_in *)args->address;
+ snprintf(servername, sizeof(servername), NIPQUAD_FMT,
+ NIPQUAD(sin->sin_addr.s_addr));
+ break;
+ }
+ case AF_INET6: {
+ struct sockaddr_in6 *sin =
+ (struct sockaddr_in6 *)args->address;
+ snprintf(servername, sizeof(servername), "%pI6",
+ &sin->sin6_addr);
+ break;
+ }
+ default:
+ /* caller wants default server name, but
+ * address family isn't recognized. */
+ return ERR_PTR(-EINVAL);
+ }
+ args->servername = servername;
+ }
+
+ xprt = xprt_create_transport(&xprtargs);
if (IS_ERR(xprt))
return (struct rpc_clnt *)xprt;
if (args->flags & RPC_CLNT_CREATE_NONPRIVPORT)
xprt->resvport = 0;
- dprintk("RPC: creating %s client for %s (xprt %p)\n",
- args->program->name, args->servername, xprt);
-
- clnt = rpc_new_client(xprt, args->servername, args->program,
- args->version, args->authflavor);
+ clnt = rpc_new_client(args, xprt);
if (IS_ERR(clnt))
return clnt;
if (!(args->flags & RPC_CLNT_CREATE_NOPING)) {
- int err = rpc_ping(clnt, RPC_TASK_SOFT|RPC_TASK_NOINTR);
+ int err = rpc_ping(clnt, RPC_TASK_SOFT);
if (err != 0) {
rpc_shutdown_client(clnt);
return ERR_PTR(err);
if (args->flags & RPC_CLNT_CREATE_HARDRTRY)
clnt->cl_softrtry = 0;
- if (args->flags & RPC_CLNT_CREATE_INTR)
- clnt->cl_intr = 1;
if (args->flags & RPC_CLNT_CREATE_AUTOBIND)
clnt->cl_autobind = 1;
- if (args->flags & RPC_CLNT_CREATE_ONESHOT)
- clnt->cl_oneshot = 1;
+ if (args->flags & RPC_CLNT_CREATE_DISCRTRY)
+ clnt->cl_discrtry = 1;
+ if (!(args->flags & RPC_CLNT_CREATE_QUIET))
+ clnt->cl_chatty = 1;
return clnt;
}
new = kmemdup(clnt, sizeof(*new), GFP_KERNEL);
if (!new)
goto out_no_clnt;
- atomic_set(&new->cl_count, 1);
- atomic_set(&new->cl_users, 0);
+ new->cl_parent = clnt;
+ /* Turn off autobind on clones */
+ new->cl_autobind = 0;
+ INIT_LIST_HEAD(&new->cl_tasks);
+ spin_lock_init(&new->cl_lock);
+ rpc_init_rtt(&new->cl_rtt_default, clnt->cl_timeout->to_initval);
new->cl_metrics = rpc_alloc_iostats(clnt);
if (new->cl_metrics == NULL)
goto out_no_stats;
+ kref_init(&new->cl_kref);
err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name);
if (err != 0)
goto out_no_path;
- new->cl_parent = clnt;
- atomic_inc(&clnt->cl_count);
- new->cl_xprt = xprt_get(clnt->cl_xprt);
- /* Turn off autobind on clones */
- new->cl_autobind = 0;
- new->cl_oneshot = 0;
- new->cl_dead = 0;
- rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval);
if (new->cl_auth)
atomic_inc(&new->cl_auth->au_count);
+ xprt_get(clnt->cl_xprt);
+ kref_get(&clnt->cl_kref);
+ rpc_register_client(new);
+ rpciod_up();
return new;
out_no_path:
rpc_free_iostats(new->cl_metrics);
out_no_stats:
kfree(new);
out_no_clnt:
- dprintk("RPC: %s returned error %d\n", __FUNCTION__, err);
+ dprintk("RPC: %s: returned error %d\n", __func__, err);
return ERR_PTR(err);
}
+EXPORT_SYMBOL_GPL(rpc_clone_client);
/*
* Properly shut down an RPC client, terminating all outstanding
- * requests. Note that we must be certain that cl_oneshot and
- * cl_dead are cleared, or else the client would be destroyed
- * when the last task releases it.
+ * requests.
*/
-int
-rpc_shutdown_client(struct rpc_clnt *clnt)
+void rpc_shutdown_client(struct rpc_clnt *clnt)
{
- dprintk("RPC: shutting down %s client for %s, tasks=%d\n",
- clnt->cl_protname, clnt->cl_server,
- atomic_read(&clnt->cl_users));
-
- while (atomic_read(&clnt->cl_users) > 0) {
- /* Don't let rpc_release_client destroy us */
- clnt->cl_oneshot = 0;
- clnt->cl_dead = 0;
+ dprintk("RPC: shutting down %s client for %s\n",
+ clnt->cl_protname, clnt->cl_server);
+
+ while (!list_empty(&clnt->cl_tasks)) {
rpc_killall_tasks(clnt);
wait_event_timeout(destroy_wait,
- !atomic_read(&clnt->cl_users), 1*HZ);
- }
-
- if (atomic_read(&clnt->cl_users) < 0) {
- printk(KERN_ERR "RPC: rpc_shutdown_client clnt %p tasks=%d\n",
- clnt, atomic_read(&clnt->cl_users));
-#ifdef RPC_DEBUG
- rpc_show_tasks();
-#endif
- BUG();
+ list_empty(&clnt->cl_tasks), 1*HZ);
}
- return rpc_destroy_client(clnt);
+ rpc_release_client(clnt);
}
+EXPORT_SYMBOL_GPL(rpc_shutdown_client);
/*
- * Delete an RPC client
+ * Free an RPC client
*/
-int
-rpc_destroy_client(struct rpc_clnt *clnt)
+static void
+rpc_free_client(struct kref *kref)
{
- if (!atomic_dec_and_test(&clnt->cl_count))
- return 1;
- BUG_ON(atomic_read(&clnt->cl_users) != 0);
+ struct rpc_clnt *clnt = container_of(kref, struct rpc_clnt, cl_kref);
- dprintk("RPC: destroying %s client for %s\n",
+ dprintk("RPC: destroying %s client for %s\n",
clnt->cl_protname, clnt->cl_server);
- if (clnt->cl_auth) {
- rpcauth_destroy(clnt->cl_auth);
- clnt->cl_auth = NULL;
- }
if (!IS_ERR(clnt->cl_dentry)) {
rpc_rmdir(clnt->cl_dentry);
rpc_put_mount();
}
if (clnt->cl_parent != clnt) {
- rpc_destroy_client(clnt->cl_parent);
+ rpc_release_client(clnt->cl_parent);
goto out_free;
}
if (clnt->cl_server != clnt->cl_inline_name)
kfree(clnt->cl_server);
out_free:
+ rpc_unregister_client(clnt);
rpc_free_iostats(clnt->cl_metrics);
clnt->cl_metrics = NULL;
xprt_put(clnt->cl_xprt);
+ rpciod_down();
kfree(clnt);
- return 0;
}
/*
- * Release an RPC client
+ * Free an RPC client
+ */
+static void
+rpc_free_auth(struct kref *kref)
+{
+ struct rpc_clnt *clnt = container_of(kref, struct rpc_clnt, cl_kref);
+
+ if (clnt->cl_auth == NULL) {
+ rpc_free_client(kref);
+ return;
+ }
+
+ /*
+ * Note: RPCSEC_GSS may need to send NULL RPC calls in order to
+ * release remaining GSS contexts. This mechanism ensures
+ * that it can do so safely.
+ */
+ kref_init(kref);
+ rpcauth_release(clnt->cl_auth);
+ clnt->cl_auth = NULL;
+ kref_put(kref, rpc_free_client);
+}
+
+/*
+ * Release reference to the RPC client
*/
void
rpc_release_client(struct rpc_clnt *clnt)
{
- dprintk("RPC: rpc_release_client(%p, %d)\n",
- clnt, atomic_read(&clnt->cl_users));
+ dprintk("RPC: rpc_release_client(%p)\n", clnt);
- if (!atomic_dec_and_test(&clnt->cl_users))
- return;
- wake_up(&destroy_wait);
- if (clnt->cl_oneshot || clnt->cl_dead)
- rpc_destroy_client(clnt);
+ if (list_empty(&clnt->cl_tasks))
+ wake_up(&destroy_wait);
+ kref_put(&clnt->cl_kref, rpc_free_auth);
}
/**
* rpc_bind_new_program - bind a new RPC program to an existing client
- * @old - old rpc_client
- * @program - rpc program to set
- * @vers - rpc program version
+ * @old: old rpc_client
+ * @program: rpc program to set
+ * @vers: rpc program version
*
* Clones the rpc client and sets up a new RPC program. This is mainly
* of use for enabling different RPC programs to share the same transport.
*/
struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old,
struct rpc_program *program,
- int vers)
+ u32 vers)
{
struct rpc_clnt *clnt;
struct rpc_version *version;
clnt->cl_prog = program->number;
clnt->cl_vers = version->number;
clnt->cl_stats = program->stats;
- err = rpc_ping(clnt, RPC_TASK_SOFT|RPC_TASK_NOINTR);
+ err = rpc_ping(clnt, RPC_TASK_SOFT);
if (err != 0) {
rpc_shutdown_client(clnt);
clnt = ERR_PTR(err);
}
-out:
+out:
return clnt;
}
+EXPORT_SYMBOL_GPL(rpc_bind_new_program);
/*
* Default callback for async RPC calls
.rpc_call_done = rpc_default_callback,
};
-/*
- * Export the signal mask handling for synchronous code that
- * sleeps on RPC calls
+/**
+ * rpc_run_task - Allocate a new RPC task, then run rpc_execute against it
+ * @task_setup_data: pointer to task initialisation data
*/
-#define RPC_INTR_SIGNALS (sigmask(SIGHUP) | sigmask(SIGINT) | sigmask(SIGQUIT) | sigmask(SIGTERM))
-
-static void rpc_save_sigmask(sigset_t *oldset, int intr)
-{
- unsigned long sigallow = sigmask(SIGKILL);
- sigset_t sigmask;
-
- /* Block all signals except those listed in sigallow */
- if (intr)
- sigallow |= RPC_INTR_SIGNALS;
- siginitsetinv(&sigmask, sigallow);
- sigprocmask(SIG_BLOCK, &sigmask, oldset);
-}
-
-static inline void rpc_task_sigmask(struct rpc_task *task, sigset_t *oldset)
-{
- rpc_save_sigmask(oldset, !RPC_TASK_UNINTERRUPTIBLE(task));
-}
-
-static inline void rpc_restore_sigmask(sigset_t *oldset)
+struct rpc_task *rpc_run_task(const struct rpc_task_setup *task_setup_data)
{
- sigprocmask(SIG_SETMASK, oldset, NULL);
-}
+ struct rpc_task *task, *ret;
-void rpc_clnt_sigmask(struct rpc_clnt *clnt, sigset_t *oldset)
-{
- rpc_save_sigmask(oldset, clnt->cl_intr);
-}
+ task = rpc_new_task(task_setup_data);
+ if (task == NULL) {
+ rpc_release_calldata(task_setup_data->callback_ops,
+ task_setup_data->callback_data);
+ ret = ERR_PTR(-ENOMEM);
+ goto out;
+ }
-void rpc_clnt_sigunmask(struct rpc_clnt *clnt, sigset_t *oldset)
-{
- rpc_restore_sigmask(oldset);
+ if (task->tk_status != 0) {
+ ret = ERR_PTR(task->tk_status);
+ rpc_put_task(task);
+ goto out;
+ }
+ atomic_inc(&task->tk_count);
+ rpc_execute(task);
+ ret = task;
+out:
+ return ret;
}
+EXPORT_SYMBOL_GPL(rpc_run_task);
-/*
- * New rpc_call implementation
+/**
+ * rpc_call_sync - Perform a synchronous RPC call
+ * @clnt: pointer to RPC client
+ * @msg: RPC call parameters
+ * @flags: RPC call flags
*/
-int rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
+int rpc_call_sync(struct rpc_clnt *clnt, const struct rpc_message *msg, int flags)
{
struct rpc_task *task;
- sigset_t oldset;
- int status;
-
- /* If this client is slain all further I/O fails */
- if (clnt->cl_dead)
- return -EIO;
+ struct rpc_task_setup task_setup_data = {
+ .rpc_client = clnt,
+ .rpc_message = msg,
+ .callback_ops = &rpc_default_ops,
+ .flags = flags,
+ };
+ int status;
BUG_ON(flags & RPC_TASK_ASYNC);
- task = rpc_new_task(clnt, flags, &rpc_default_ops, NULL);
- if (task == NULL)
- return -ENOMEM;
-
- /* Mask signals on RPC calls _and_ GSS_AUTH upcalls */
- rpc_task_sigmask(task, &oldset);
-
- rpc_call_setup(task, msg, 0);
-
- /* Set up the call info struct and execute the task */
+ task = rpc_run_task(&task_setup_data);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
status = task->tk_status;
- if (status != 0) {
- rpc_release_task(task);
- goto out;
- }
- atomic_inc(&task->tk_count);
- status = rpc_execute(task);
- if (status == 0)
- status = task->tk_status;
rpc_put_task(task);
-out:
- rpc_restore_sigmask(&oldset);
return status;
}
+EXPORT_SYMBOL_GPL(rpc_call_sync);
-/*
- * New rpc_call implementation
+/**
+ * rpc_call_async - Perform an asynchronous RPC call
+ * @clnt: pointer to RPC client
+ * @msg: RPC call parameters
+ * @flags: RPC call flags
+ * @tk_ops: RPC call ops
+ * @data: user call data
*/
int
-rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, int flags,
+rpc_call_async(struct rpc_clnt *clnt, const struct rpc_message *msg, int flags,
const struct rpc_call_ops *tk_ops, void *data)
{
struct rpc_task *task;
- sigset_t oldset;
- int status;
-
- /* If this client is slain all further I/O fails */
- status = -EIO;
- if (clnt->cl_dead)
- goto out_release;
-
- flags |= RPC_TASK_ASYNC;
-
- /* Create/initialize a new RPC task */
- status = -ENOMEM;
- if (!(task = rpc_new_task(clnt, flags, tk_ops, data)))
- goto out_release;
-
- /* Mask signals on GSS_AUTH upcalls */
- rpc_task_sigmask(task, &oldset);
-
- rpc_call_setup(task, msg, 0);
-
- /* Set up the call info struct and execute the task */
- status = task->tk_status;
- if (status == 0)
- rpc_execute(task);
- else
- rpc_release_task(task);
+ struct rpc_task_setup task_setup_data = {
+ .rpc_client = clnt,
+ .rpc_message = msg,
+ .callback_ops = tk_ops,
+ .callback_data = data,
+ .flags = flags|RPC_TASK_ASYNC,
+ };
- rpc_restore_sigmask(&oldset);
- return status;
-out_release:
- rpc_release_calldata(tk_ops, data);
- return status;
+ task = rpc_run_task(&task_setup_data);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
+ rpc_put_task(task);
+ return 0;
}
-
+EXPORT_SYMBOL_GPL(rpc_call_async);
void
-rpc_call_setup(struct rpc_task *task, struct rpc_message *msg, int flags)
+rpc_call_start(struct rpc_task *task)
{
- task->tk_msg = *msg;
- task->tk_flags |= flags;
- /* Bind the user cred */
- if (task->tk_msg.rpc_cred != NULL)
- rpcauth_holdcred(task);
- else
- rpcauth_bindcred(task);
-
- if (task->tk_status == 0)
- task->tk_action = call_start;
- else
- task->tk_action = rpc_exit_task;
+ task->tk_action = call_start;
}
+EXPORT_SYMBOL_GPL(rpc_call_start);
/**
* rpc_peeraddr - extract remote peer address from clnt's xprt
* @clnt: RPC client structure
* @buf: target buffer
- * @size: length of target buffer
+ * @bufsize: length of target buffer
*
* Returns the number of bytes that are actually in the stored address.
*/
* @format: address format
*
*/
-char *rpc_peeraddr2str(struct rpc_clnt *clnt, enum rpc_display_format_t format)
+const char *rpc_peeraddr2str(struct rpc_clnt *clnt,
+ enum rpc_display_format_t format)
{
struct rpc_xprt *xprt = clnt->cl_xprt;
- return xprt->ops->print_addr(xprt, format);
+
+ if (xprt->address_strings[format] != NULL)
+ return xprt->address_strings[format];
+ else
+ return "unprintable";
}
EXPORT_SYMBOL_GPL(rpc_peeraddr2str);
if (xprt->ops->set_buffer_size)
xprt->ops->set_buffer_size(xprt, sndsize, rcvsize);
}
+EXPORT_SYMBOL_GPL(rpc_setbufsize);
/*
* Return size of largest payload RPC client can support, in bytes
task->tk_action = call_start;
}
+EXPORT_SYMBOL_GPL(rpc_restart_call);
+
+#ifdef RPC_DEBUG
+static const char *rpc_proc_name(const struct rpc_task *task)
+{
+ const struct rpc_procinfo *proc = task->tk_msg.rpc_proc;
+
+ if (proc) {
+ if (proc->p_name)
+ return proc->p_name;
+ else
+ return "NULL";
+ } else
+ return "no proc";
+}
+#endif
/*
* 0. Initial state
{
struct rpc_clnt *clnt = task->tk_client;
- dprintk("RPC: %4d call_start %s%d proc %d (%s)\n", task->tk_pid,
- clnt->cl_protname, clnt->cl_vers, task->tk_msg.rpc_proc->p_proc,
- (RPC_IS_ASYNC(task) ? "async" : "sync"));
+ dprintk("RPC: %5u call_start %s%d proc %s (%s)\n", task->tk_pid,
+ clnt->cl_protname, clnt->cl_vers,
+ rpc_proc_name(task),
+ (RPC_IS_ASYNC(task) ? "async" : "sync"));
/* Increment call count */
task->tk_msg.rpc_proc->p_count++;
static void
call_reserve(struct rpc_task *task)
{
- dprintk("RPC: %4d call_reserve\n", task->tk_pid);
+ dprint_status(task);
if (!rpcauth_uptodatecred(task)) {
task->tk_action = call_refresh;
{
int status = task->tk_status;
- dprintk("RPC: %4d call_reserveresult (status %d)\n",
- task->tk_pid, task->tk_status);
+ dprint_status(task);
/*
* After a call to xprt_reserve(), we must have either
}
printk(KERN_ERR "%s: status=%d, but no request slot, exiting\n",
- __FUNCTION__, status);
+ __func__, status);
rpc_exit(task, -EIO);
return;
}
*/
if (task->tk_rqstp) {
printk(KERN_ERR "%s: status=%d, request allocated anyway\n",
- __FUNCTION__, status);
+ __func__, status);
xprt_release(task);
}
break;
default:
printk(KERN_ERR "%s: unrecognized error %d, exiting\n",
- __FUNCTION__, status);
+ __func__, status);
break;
}
rpc_exit(task, status);
static void
call_allocate(struct rpc_task *task)
{
+ unsigned int slack = task->tk_msg.rpc_cred->cr_auth->au_cslack;
struct rpc_rqst *req = task->tk_rqstp;
struct rpc_xprt *xprt = task->tk_xprt;
- unsigned int bufsiz;
+ struct rpc_procinfo *proc = task->tk_msg.rpc_proc;
- dprintk("RPC: %4d call_allocate (status %d)\n",
- task->tk_pid, task->tk_status);
+ dprint_status(task);
+
+ task->tk_status = 0;
task->tk_action = call_bind;
+
if (req->rq_buffer)
return;
- /* FIXME: compute buffer requirements more exactly using
- * auth->au_wslack */
- bufsiz = task->tk_msg.rpc_proc->p_bufsiz + RPC_SLACK_SPACE;
+ if (proc->p_proc != 0) {
+ BUG_ON(proc->p_arglen == 0);
+ if (proc->p_decode != NULL)
+ BUG_ON(proc->p_replen == 0);
+ }
- if (xprt->ops->buf_alloc(task, bufsiz << 1) != NULL)
+ /*
+ * Calculate the size (in quads) of the RPC call
+ * and reply headers, and convert both values
+ * to byte sizes.
+ */
+ req->rq_callsize = RPC_CALLHDRSIZE + (slack << 1) + proc->p_arglen;
+ req->rq_callsize <<= 2;
+ req->rq_rcvsize = RPC_REPHDRSIZE + slack + proc->p_replen;
+ req->rq_rcvsize <<= 2;
+
+ req->rq_buffer = xprt->ops->buf_alloc(task,
+ req->rq_callsize + req->rq_rcvsize);
+ if (req->rq_buffer != NULL)
return;
- printk(KERN_INFO "RPC: buffer allocation failed for task %p\n", task);
+
+ dprintk("RPC: %5u rpc_buffer allocation failed\n", task->tk_pid);
if (RPC_IS_ASYNC(task) || !signalled()) {
- xprt_release(task);
- task->tk_action = call_reserve;
+ task->tk_action = call_allocate;
rpc_delay(task, HZ>>4);
return;
}
task->tk_rqstp->rq_snd_buf.len = 0;
}
+static inline void
+rpc_xdr_buf_init(struct xdr_buf *buf, void *start, size_t len)
+{
+ buf->head[0].iov_base = start;
+ buf->head[0].iov_len = len;
+ buf->tail[0].iov_len = 0;
+ buf->page_len = 0;
+ buf->flags = 0;
+ buf->len = 0;
+ buf->buflen = len;
+}
+
/*
* 3. Encode arguments of an RPC call
*/
static void
-call_encode(struct rpc_task *task)
+rpc_xdr_encode(struct rpc_task *task)
{
struct rpc_rqst *req = task->tk_rqstp;
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- unsigned int bufsiz;
kxdrproc_t encode;
__be32 *p;
- dprintk("RPC: %4d call_encode (status %d)\n",
- task->tk_pid, task->tk_status);
-
- /* Default buffer setup */
- bufsiz = req->rq_bufsize >> 1;
- sndbuf->head[0].iov_base = (void *)req->rq_buffer;
- sndbuf->head[0].iov_len = bufsiz;
- sndbuf->tail[0].iov_len = 0;
- sndbuf->page_len = 0;
- sndbuf->len = 0;
- sndbuf->buflen = bufsiz;
- rcvbuf->head[0].iov_base = (void *)((char *)req->rq_buffer + bufsiz);
- rcvbuf->head[0].iov_len = bufsiz;
- rcvbuf->tail[0].iov_len = 0;
- rcvbuf->page_len = 0;
- rcvbuf->len = 0;
- rcvbuf->buflen = bufsiz;
-
- /* Encode header and provided arguments */
- encode = task->tk_msg.rpc_proc->p_encode;
- if (!(p = call_header(task))) {
- printk(KERN_INFO "RPC: call_header failed, exit EIO\n");
+ dprint_status(task);
+
+ rpc_xdr_buf_init(&req->rq_snd_buf,
+ req->rq_buffer,
+ req->rq_callsize);
+ rpc_xdr_buf_init(&req->rq_rcv_buf,
+ (char *)req->rq_buffer + req->rq_callsize,
+ req->rq_rcvsize);
+
+ p = rpc_encode_header(task);
+ if (p == NULL) {
+ printk(KERN_INFO "RPC: couldn't encode RPC header, exit EIO\n");
rpc_exit(task, -EIO);
return;
}
+
+ encode = task->tk_msg.rpc_proc->p_encode;
if (encode == NULL)
return;
- lock_kernel();
task->tk_status = rpcauth_wrap_req(task, encode, req, p,
task->tk_msg.rpc_argp);
- unlock_kernel();
- if (task->tk_status == -ENOMEM) {
- /* XXX: Is this sane? */
- rpc_delay(task, 3*HZ);
- task->tk_status = -EAGAIN;
- }
}
/*
{
struct rpc_xprt *xprt = task->tk_xprt;
- dprintk("RPC: %4d call_bind (status %d)\n",
- task->tk_pid, task->tk_status);
+ dprint_status(task);
task->tk_action = call_connect;
if (!xprt_bound(xprt)) {
static void
call_bind_status(struct rpc_task *task)
{
- int status = -EACCES;
+ int status = -EIO;
if (task->tk_status >= 0) {
- dprintk("RPC: %4d call_bind_status (status %d)\n",
- task->tk_pid, task->tk_status);
+ dprint_status(task);
task->tk_status = 0;
task->tk_action = call_connect;
return;
}
switch (task->tk_status) {
+ case -ENOMEM:
+ dprintk("RPC: %5u rpcbind out of memory\n", task->tk_pid);
+ rpc_delay(task, HZ >> 2);
+ goto retry_timeout;
case -EACCES:
- dprintk("RPC: %4d remote rpcbind: RPC program/version unavailable\n",
- task->tk_pid);
+ dprintk("RPC: %5u remote rpcbind: RPC program/version "
+ "unavailable\n", task->tk_pid);
+ /* fail immediately if this is an RPC ping */
+ if (task->tk_msg.rpc_proc->p_proc == 0) {
+ status = -EOPNOTSUPP;
+ break;
+ }
rpc_delay(task, 3*HZ);
goto retry_timeout;
case -ETIMEDOUT:
- dprintk("RPC: %4d rpcbind request timed out\n",
+ dprintk("RPC: %5u rpcbind request timed out\n",
task->tk_pid);
goto retry_timeout;
case -EPFNOSUPPORT:
- dprintk("RPC: %4d remote rpcbind service unavailable\n",
+ /* server doesn't support any rpcbind version we know of */
+ dprintk("RPC: %5u remote rpcbind service unavailable\n",
task->tk_pid);
break;
case -EPROTONOSUPPORT:
- dprintk("RPC: %4d remote rpcbind version 2 unavailable\n",
+ dprintk("RPC: %5u remote rpcbind version unavailable, retrying\n",
task->tk_pid);
- break;
+ task->tk_status = 0;
+ task->tk_action = call_bind;
+ return;
default:
- dprintk("RPC: %4d unrecognized rpcbind error (%d)\n",
+ dprintk("RPC: %5u unrecognized rpcbind error (%d)\n",
task->tk_pid, -task->tk_status);
- status = -EIO;
}
rpc_exit(task, status);
{
struct rpc_xprt *xprt = task->tk_xprt;
- dprintk("RPC: %4d call_connect xprt %p %s connected\n",
+ dprintk("RPC: %5u call_connect xprt %p %s connected\n",
task->tk_pid, xprt,
(xprt_connected(xprt) ? "is" : "is not"));
struct rpc_clnt *clnt = task->tk_client;
int status = task->tk_status;
- dprintk("RPC: %5u call_connect_status (status %d)\n",
- task->tk_pid, task->tk_status);
+ dprint_status(task);
task->tk_status = 0;
if (status >= 0) {
static void
call_transmit(struct rpc_task *task)
{
- dprintk("RPC: %4d call_transmit (status %d)\n",
- task->tk_pid, task->tk_status);
+ dprint_status(task);
task->tk_action = call_status;
if (task->tk_status < 0)
/* Encode here so that rpcsec_gss can use correct sequence number. */
if (rpc_task_need_encode(task)) {
BUG_ON(task->tk_rqstp->rq_bytes_sent != 0);
- call_encode(task);
+ rpc_xdr_encode(task);
/* Did the encode result in an error condition? */
- if (task->tk_status != 0)
+ if (task->tk_status != 0) {
+ /* Was the error nonfatal? */
+ if (task->tk_status == -EAGAIN)
+ rpc_delay(task, HZ >> 4);
+ else
+ rpc_exit(task, task->tk_status);
return;
+ }
}
xprt_transmit(task);
if (task->tk_status < 0)
if (task->tk_msg.rpc_proc->p_decode != NULL)
return;
task->tk_action = rpc_exit_task;
- rpc_wake_up_task(task);
+ rpc_wake_up_queued_task(&task->tk_xprt->pending, task);
}
/*
if (req->rq_received > 0 && !req->rq_bytes_sent)
task->tk_status = req->rq_received;
- dprintk("RPC: %4d call_status (status %d)\n",
- task->tk_pid, task->tk_status);
+ dprint_status(task);
status = task->tk_status;
if (status >= 0) {
rpc_delay(task, 3*HZ);
case -ETIMEDOUT:
task->tk_action = call_timeout;
+ if (task->tk_client->cl_discrtry)
+ xprt_conditional_disconnect(task->tk_xprt,
+ req->rq_connect_cookie);
break;
case -ECONNREFUSED:
case -ENOTCONN:
rpc_exit(task, status);
break;
default:
- printk("%s: RPC call returned error %d\n",
+ if (clnt->cl_chatty)
+ printk("%s: RPC call returned error %d\n",
clnt->cl_protname, -status);
rpc_exit(task, status);
}
struct rpc_clnt *clnt = task->tk_client;
if (xprt_adjust_timeout(task->tk_rqstp) == 0) {
- dprintk("RPC: %4d call_timeout (minor)\n", task->tk_pid);
+ dprintk("RPC: %5u call_timeout (minor)\n", task->tk_pid);
goto retry;
}
- dprintk("RPC: %4d call_timeout (major)\n", task->tk_pid);
+ dprintk("RPC: %5u call_timeout (major)\n", task->tk_pid);
task->tk_timeouts++;
if (RPC_IS_SOFT(task)) {
- printk(KERN_NOTICE "%s: server %s not responding, timed out\n",
+ if (clnt->cl_chatty)
+ printk(KERN_NOTICE "%s: server %s not responding, timed out\n",
clnt->cl_protname, clnt->cl_server);
rpc_exit(task, -EIO);
return;
if (!(task->tk_flags & RPC_CALL_MAJORSEEN)) {
task->tk_flags |= RPC_CALL_MAJORSEEN;
- printk(KERN_NOTICE "%s: server %s not responding, still trying\n",
+ if (clnt->cl_chatty)
+ printk(KERN_NOTICE "%s: server %s not responding, still trying\n",
clnt->cl_protname, clnt->cl_server);
}
rpc_force_rebind(clnt);
+ /*
+ * Did our request time out due to an RPCSEC_GSS out-of-sequence
+ * event? RFC2203 requires the server to drop all such requests.
+ */
+ rpcauth_invalcred(task);
retry:
clnt->cl_stats->rpcretrans++;
kxdrproc_t decode = task->tk_msg.rpc_proc->p_decode;
__be32 *p;
- dprintk("RPC: %4d call_decode (status %d)\n",
- task->tk_pid, task->tk_status);
+ dprintk("RPC: %5u call_decode (status %d)\n",
+ task->tk_pid, task->tk_status);
if (task->tk_flags & RPC_CALL_MAJORSEEN) {
- printk(KERN_NOTICE "%s: server %s OK\n",
- clnt->cl_protname, clnt->cl_server);
+ if (clnt->cl_chatty)
+ printk(KERN_NOTICE "%s: server %s OK\n",
+ clnt->cl_protname, clnt->cl_server);
task->tk_flags &= ~RPC_CALL_MAJORSEEN;
}
- if (task->tk_status < 12) {
- if (!RPC_IS_SOFT(task)) {
- task->tk_action = call_bind;
- clnt->cl_stats->rpcretrans++;
- goto out_retry;
- }
- dprintk("%s: too small RPC reply size (%d bytes)\n",
- clnt->cl_protname, task->tk_status);
- task->tk_action = call_timeout;
- goto out_retry;
- }
-
/*
* Ensure that we see all writes made by xprt_complete_rqst()
* before it changed req->rq_received.
WARN_ON(memcmp(&req->rq_rcv_buf, &req->rq_private_buf,
sizeof(req->rq_rcv_buf)) != 0);
- /* Verify the RPC header */
- p = call_verify(task);
+ if (req->rq_rcv_buf.len < 12) {
+ if (!RPC_IS_SOFT(task)) {
+ task->tk_action = call_bind;
+ clnt->cl_stats->rpcretrans++;
+ goto out_retry;
+ }
+ dprintk("RPC: %s: too small RPC reply size (%d bytes)\n",
+ clnt->cl_protname, task->tk_status);
+ task->tk_action = call_timeout;
+ goto out_retry;
+ }
+
+ p = rpc_verify_header(task);
if (IS_ERR(p)) {
if (p == ERR_PTR(-EAGAIN))
goto out_retry;
task->tk_action = rpc_exit_task;
if (decode) {
- lock_kernel();
task->tk_status = rpcauth_unwrap_resp(task, decode, req, p,
task->tk_msg.rpc_resp);
- unlock_kernel();
}
- dprintk("RPC: %4d call_decode result %d\n", task->tk_pid,
- task->tk_status);
+ dprintk("RPC: %5u call_decode result %d\n", task->tk_pid,
+ task->tk_status);
return;
out_retry:
- req->rq_received = req->rq_private_buf.len = 0;
task->tk_status = 0;
+ /* Note: rpc_verify_header() may have freed the RPC slot */
+ if (task->tk_rqstp == req) {
+ req->rq_received = req->rq_rcv_buf.len = 0;
+ if (task->tk_client->cl_discrtry)
+ xprt_conditional_disconnect(task->tk_xprt,
+ req->rq_connect_cookie);
+ }
}
/*
static void
call_refresh(struct rpc_task *task)
{
- dprintk("RPC: %4d call_refresh\n", task->tk_pid);
+ dprint_status(task);
- xprt_release(task); /* Must do to obtain new XID */
task->tk_action = call_refreshresult;
task->tk_status = 0;
task->tk_client->cl_stats->rpcauthrefresh++;
call_refreshresult(struct rpc_task *task)
{
int status = task->tk_status;
- dprintk("RPC: %4d call_refreshresult (status %d)\n",
- task->tk_pid, task->tk_status);
+
+ dprint_status(task);
task->tk_status = 0;
task->tk_action = call_reserve;
return;
}
-/*
- * Call header serialization
- */
static __be32 *
-call_header(struct rpc_task *task)
+rpc_encode_header(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
struct rpc_rqst *req = task->tk_rqstp;
return p;
}
-/*
- * Reply header verification
- */
static __be32 *
-call_verify(struct rpc_task *task)
+rpc_verify_header(struct rpc_task *task)
{
struct kvec *iov = &task->tk_rqstp->rq_rcv_buf.head[0];
int len = task->tk_rqstp->rq_rcv_buf.len >> 2;
* - if it isn't pointer subtraction in the NFS client may give
* undefined results
*/
- printk(KERN_WARNING
- "call_verify: XDR representation not a multiple of"
- " 4 bytes: 0x%x\n", task->tk_rqstp->rq_rcv_buf.len);
+ dprintk("RPC: %5u %s: XDR representation not a multiple of"
+ " 4 bytes: 0x%x\n", task->tk_pid, __func__,
+ task->tk_rqstp->rq_rcv_buf.len);
goto out_eio;
}
if ((len -= 3) < 0)
p += 1; /* skip XID */
if ((n = ntohl(*p++)) != RPC_REPLY) {
- printk(KERN_WARNING "call_verify: not an RPC reply: %x\n", n);
+ dprintk("RPC: %5u %s: not an RPC reply: %x\n",
+ task->tk_pid, __func__, n);
goto out_garbage;
}
if ((n = ntohl(*p++)) != RPC_MSG_ACCEPTED) {
case RPC_AUTH_ERROR:
break;
case RPC_MISMATCH:
- dprintk("%s: RPC call version mismatch!\n", __FUNCTION__);
+ dprintk("RPC: %5u %s: RPC call version "
+ "mismatch!\n",
+ task->tk_pid, __func__);
error = -EPROTONOSUPPORT;
goto out_err;
default:
- dprintk("%s: RPC call rejected, unknown error: %x\n", __FUNCTION__, n);
+ dprintk("RPC: %5u %s: RPC call rejected, "
+ "unknown error: %x\n",
+ task->tk_pid, __func__, n);
goto out_eio;
}
if (--len < 0)
if (!task->tk_cred_retry)
break;
task->tk_cred_retry--;
- dprintk("RPC: %4d call_verify: retry stale creds\n",
- task->tk_pid);
+ dprintk("RPC: %5u %s: retry stale creds\n",
+ task->tk_pid, __func__);
rpcauth_invalcred(task);
+ /* Ensure we obtain a new XID! */
+ xprt_release(task);
task->tk_action = call_refresh;
goto out_retry;
case RPC_AUTH_BADCRED:
if (!task->tk_garb_retry)
break;
task->tk_garb_retry--;
- dprintk("RPC: %4d call_verify: retry garbled creds\n",
- task->tk_pid);
+ dprintk("RPC: %5u %s: retry garbled creds\n",
+ task->tk_pid, __func__);
task->tk_action = call_bind;
goto out_retry;
case RPC_AUTH_TOOWEAK:
- printk(KERN_NOTICE "call_verify: server %s requires stronger "
+ printk(KERN_NOTICE "RPC: server %s requires stronger "
"authentication.\n", task->tk_client->cl_server);
break;
default:
- printk(KERN_WARNING "call_verify: unknown auth error: %x\n", n);
+ dprintk("RPC: %5u %s: unknown auth error: %x\n",
+ task->tk_pid, __func__, n);
error = -EIO;
}
- dprintk("RPC: %4d call_verify: call rejected %d\n",
- task->tk_pid, n);
+ dprintk("RPC: %5u %s: call rejected %d\n",
+ task->tk_pid, __func__, n);
goto out_err;
}
if (!(p = rpcauth_checkverf(task, p))) {
- printk(KERN_WARNING "call_verify: auth check failed\n");
+ dprintk("RPC: %5u %s: auth check failed\n",
+ task->tk_pid, __func__);
goto out_garbage; /* bad verifier, retry */
}
len = p - (__be32 *)iov->iov_base - 1;
case RPC_SUCCESS:
return p;
case RPC_PROG_UNAVAIL:
- dprintk("RPC: call_verify: program %u is unsupported by server %s\n",
+ dprintk("RPC: %5u %s: program %u is unsupported by server %s\n",
+ task->tk_pid, __func__,
(unsigned int)task->tk_client->cl_prog,
task->tk_client->cl_server);
error = -EPFNOSUPPORT;
goto out_err;
case RPC_PROG_MISMATCH:
- dprintk("RPC: call_verify: program %u, version %u unsupported by server %s\n",
+ dprintk("RPC: %5u %s: program %u, version %u unsupported by "
+ "server %s\n", task->tk_pid, __func__,
(unsigned int)task->tk_client->cl_prog,
(unsigned int)task->tk_client->cl_vers,
task->tk_client->cl_server);
error = -EPROTONOSUPPORT;
goto out_err;
case RPC_PROC_UNAVAIL:
- dprintk("RPC: call_verify: proc %p unsupported by program %u, version %u on server %s\n",
- task->tk_msg.rpc_proc,
+ dprintk("RPC: %5u %s: proc %s unsupported by program %u, "
+ "version %u on server %s\n",
+ task->tk_pid, __func__,
+ rpc_proc_name(task),
task->tk_client->cl_prog,
task->tk_client->cl_vers,
task->tk_client->cl_server);
error = -EOPNOTSUPP;
goto out_err;
case RPC_GARBAGE_ARGS:
- dprintk("RPC: %4d %s: server saw garbage\n", task->tk_pid, __FUNCTION__);
+ dprintk("RPC: %5u %s: server saw garbage\n",
+ task->tk_pid, __func__);
break; /* retry */
default:
- printk(KERN_WARNING "call_verify: server accept status: %x\n", n);
+ dprintk("RPC: %5u %s: server accept status: %x\n",
+ task->tk_pid, __func__, n);
/* Also retry */
}
task->tk_client->cl_stats->rpcgarbage++;
if (task->tk_garb_retry) {
task->tk_garb_retry--;
- dprintk("RPC %s: retrying %4d\n", __FUNCTION__, task->tk_pid);
+ dprintk("RPC: %5u %s: retrying\n",
+ task->tk_pid, __func__);
task->tk_action = call_bind;
out_retry:
return ERR_PTR(-EAGAIN);
}
- printk(KERN_WARNING "RPC %s: retry failed, exit EIO\n", __FUNCTION__);
out_eio:
error = -EIO;
out_err:
rpc_exit(task, error);
+ dprintk("RPC: %5u %s: call failed with error %d\n", task->tk_pid,
+ __func__, error);
return ERR_PTR(error);
out_overflow:
- printk(KERN_WARNING "RPC %s: server reply was truncated.\n", __FUNCTION__);
+ dprintk("RPC: %5u %s: server reply was truncated.\n", task->tk_pid,
+ __func__);
goto out_garbage;
}
.p_decode = rpcproc_decode_null,
};
-int rpc_ping(struct rpc_clnt *clnt, int flags)
+static int rpc_ping(struct rpc_clnt *clnt, int flags)
{
struct rpc_message msg = {
.rpc_proc = &rpcproc_null,
put_rpccred(msg.rpc_cred);
return err;
}
+
+struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred, int flags)
+{
+ struct rpc_message msg = {
+ .rpc_proc = &rpcproc_null,
+ .rpc_cred = cred,
+ };
+ struct rpc_task_setup task_setup_data = {
+ .rpc_client = clnt,
+ .rpc_message = &msg,
+ .callback_ops = &rpc_default_ops,
+ .flags = flags,
+ };
+ return rpc_run_task(&task_setup_data);
+}
+EXPORT_SYMBOL_GPL(rpc_call_null);
+
+#ifdef RPC_DEBUG
+static void rpc_show_header(void)
+{
+ printk(KERN_INFO "-pid- flgs status -client- --rqstp- "
+ "-timeout ---ops--\n");
+}
+
+static void rpc_show_task(const struct rpc_clnt *clnt,
+ const struct rpc_task *task)
+{
+ const char *rpc_waitq = "none";
+ char *p, action[KSYM_SYMBOL_LEN];
+
+ if (RPC_IS_QUEUED(task))
+ rpc_waitq = rpc_qname(task->tk_waitqueue);
+
+ /* map tk_action pointer to a function name; then trim off
+ * the "+0x0 [sunrpc]" */
+ sprint_symbol(action, (unsigned long)task->tk_action);
+ p = strchr(action, '+');
+ if (p)
+ *p = '\0';
+
+ printk(KERN_INFO "%5u %04x %6d %8p %8p %8ld %8p %sv%u %s a:%s q:%s\n",
+ task->tk_pid, task->tk_flags, task->tk_status,
+ clnt, task->tk_rqstp, task->tk_timeout, task->tk_ops,
+ clnt->cl_protname, clnt->cl_vers, rpc_proc_name(task),
+ action, rpc_waitq);
+}
+
+void rpc_show_tasks(void)
+{
+ struct rpc_clnt *clnt;
+ struct rpc_task *task;
+ int header = 0;
+
+ spin_lock(&rpc_client_lock);
+ list_for_each_entry(clnt, &all_clients, cl_clients) {
+ spin_lock(&clnt->cl_lock);
+ list_for_each_entry(task, &clnt->cl_tasks, tk_task) {
+ if (!header) {
+ rpc_show_header();
+ header++;
+ }
+ rpc_show_task(clnt, task);
+ }
+ spin_unlock(&clnt->cl_lock);
+ }
+ spin_unlock(&rpc_client_lock);
+}
+#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff