#include <linux/sunrpc/clnt.h>
#include <linux/kobject.h>
#include <linux/sunrpc/addr.h>
#include <linux/sunrpc/xprtsock.h>
#include "sysfs.h"
struct xprt_addr {
const char *addr;
struct rcu_head rcu;
};
static void free_xprt_addr(struct rcu_head *head)
{
struct xprt_addr *addr = container_of(head, struct xprt_addr, rcu);
kfree(addr->addr);
kfree(addr);
}
static struct kset *rpc_sunrpc_kset;
static struct kobject *rpc_sunrpc_client_kobj, *rpc_sunrpc_xprt_switch_kobj;
static void rpc_sysfs_object_release(struct kobject *kobj)
{
kfree(kobj);
}
static const struct kobj_ns_type_operations *
rpc_sysfs_object_child_ns_type(const struct kobject *kobj)
{
return &net_ns_type_operations;
}
static const struct kobj_type rpc_sysfs_object_type = {
.release = rpc_sysfs_object_release,
.sysfs_ops = &kobj_sysfs_ops,
.child_ns_type = rpc_sysfs_object_child_ns_type,
};
static struct kobject *rpc_sysfs_object_alloc(const char *name,
struct kset *kset,
struct kobject *parent)
{
struct kobject *kobj;
kobj = kzalloc_obj(*kobj);
if (kobj) {
kobj->kset = kset;
if (kobject_init_and_add(kobj, &rpc_sysfs_object_type,
parent, "%s", name) == 0)
return kobj;
kobject_put(kobj);
}
return NULL;
}
static inline struct rpc_clnt *
rpc_sysfs_client_kobj_get_clnt(struct kobject *kobj)
{
struct rpc_sysfs_client *c = container_of(kobj,
struct rpc_sysfs_client, kobject);
struct rpc_clnt *ret = c->clnt;
return refcount_inc_not_zero(&ret->cl_count) ? ret : NULL;
}
static inline struct rpc_xprt *
rpc_sysfs_xprt_kobj_get_xprt(struct kobject *kobj)
{
struct rpc_sysfs_xprt *x = container_of(kobj,
struct rpc_sysfs_xprt, kobject);
return xprt_get(x->xprt);
}
static inline struct rpc_xprt_switch *
rpc_sysfs_xprt_kobj_get_xprt_switch(struct kobject *kobj)
{
struct rpc_sysfs_xprt *x = container_of(kobj,
struct rpc_sysfs_xprt, kobject);
return xprt_switch_get(x->xprt_switch);
}
static inline struct rpc_xprt_switch *
rpc_sysfs_xprt_switch_kobj_get_xprt(struct kobject *kobj)
{
struct rpc_sysfs_xprt_switch *x = container_of(kobj,
struct rpc_sysfs_xprt_switch, kobject);
return xprt_switch_get(x->xprt_switch);
}
static ssize_t rpc_sysfs_clnt_version_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_clnt *clnt = rpc_sysfs_client_kobj_get_clnt(kobj);
ssize_t ret;
if (!clnt)
return sprintf(buf, "<closed>\n");
ret = sprintf(buf, "%u", clnt->cl_vers);
refcount_dec(&clnt->cl_count);
return ret;
}
static ssize_t rpc_sysfs_clnt_program_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_clnt *clnt = rpc_sysfs_client_kobj_get_clnt(kobj);
ssize_t ret;
if (!clnt)
return sprintf(buf, "<closed>\n");
ret = sprintf(buf, "%s", clnt->cl_program->name);
refcount_dec(&clnt->cl_count);
return ret;
}
static ssize_t rpc_sysfs_clnt_max_connect_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_clnt *clnt = rpc_sysfs_client_kobj_get_clnt(kobj);
ssize_t ret;
if (!clnt)
return sprintf(buf, "<closed>\n");
ret = sprintf(buf, "%u\n", clnt->cl_max_connect);
refcount_dec(&clnt->cl_count);
return ret;
}
static ssize_t rpc_sysfs_xprt_dstaddr_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
ssize_t ret;
if (!xprt) {
ret = sprintf(buf, "<closed>\n");
goto out;
}
ret = sprintf(buf, "%s\n", xprt->address_strings[RPC_DISPLAY_ADDR]);
xprt_put(xprt);
out:
return ret;
}
static ssize_t rpc_sysfs_xprt_srcaddr_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
size_t buflen = PAGE_SIZE;
ssize_t ret;
if (!xprt || !xprt_connected(xprt)) {
ret = sprintf(buf, "<closed>\n");
} else if (xprt->ops->get_srcaddr) {
ret = xprt->ops->get_srcaddr(xprt, buf, buflen);
if (ret > 0) {
if (ret < buflen - 1) {
buf[ret] = '\n';
ret++;
buf[ret] = '\0';
}
} else
ret = sprintf(buf, "<closed>\n");
} else
ret = sprintf(buf, "<not a socket>\n");
xprt_put(xprt);
return ret;
}
static const char *xprtsec_strings[] = {
[RPC_XPRTSEC_NONE] = "none",
[RPC_XPRTSEC_TLS_ANON] = "tls-anon",
[RPC_XPRTSEC_TLS_X509] = "tls-x509",
};
static ssize_t rpc_sysfs_xprt_xprtsec_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
ssize_t ret;
if (!xprt) {
ret = sprintf(buf, "<closed>\n");
goto out;
}
ret = sprintf(buf, "%s\n", xprtsec_strings[xprt->xprtsec.policy]);
xprt_put(xprt);
out:
return ret;
}
static ssize_t rpc_sysfs_xprt_info_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
unsigned short srcport = 0;
size_t buflen = PAGE_SIZE;
ssize_t ret;
if (!xprt || !xprt_connected(xprt)) {
ret = sprintf(buf, "<closed>\n");
goto out;
}
if (xprt->ops->get_srcport)
srcport = xprt->ops->get_srcport(xprt);
ret = snprintf(buf, buflen,
"last_used=%lu\ncur_cong=%lu\ncong_win=%lu\n"
"max_num_slots=%u\nmin_num_slots=%u\nnum_reqs=%u\n"
"binding_q_len=%u\nsending_q_len=%u\npending_q_len=%u\n"
"backlog_q_len=%u\nmain_xprt=%d\nsrc_port=%u\n"
"tasks_queuelen=%ld\ndst_port=%s\n",
xprt->last_used, xprt->cong, xprt->cwnd, xprt->max_reqs,
xprt->min_reqs, xprt->num_reqs, xprt->binding.qlen,
xprt->sending.qlen, xprt->pending.qlen,
xprt->backlog.qlen, xprt->main, srcport,
atomic_long_read(&xprt->queuelen),
xprt->address_strings[RPC_DISPLAY_PORT]);
out:
xprt_put(xprt);
return ret;
}
static ssize_t rpc_sysfs_xprt_state_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
ssize_t ret;
int locked, connected, connecting, close_wait, bound, binding,
closing, congested, cwnd_wait, write_space, offline, remove;
if (!(xprt && xprt->state)) {
ret = sprintf(buf, "state=CLOSED\n");
} else {
locked = test_bit(XPRT_LOCKED, &xprt->state);
connected = test_bit(XPRT_CONNECTED, &xprt->state);
connecting = test_bit(XPRT_CONNECTING, &xprt->state);
close_wait = test_bit(XPRT_CLOSE_WAIT, &xprt->state);
bound = test_bit(XPRT_BOUND, &xprt->state);
binding = test_bit(XPRT_BINDING, &xprt->state);
closing = test_bit(XPRT_CLOSING, &xprt->state);
congested = test_bit(XPRT_CONGESTED, &xprt->state);
cwnd_wait = test_bit(XPRT_CWND_WAIT, &xprt->state);
write_space = test_bit(XPRT_WRITE_SPACE, &xprt->state);
offline = test_bit(XPRT_OFFLINE, &xprt->state);
remove = test_bit(XPRT_REMOVE, &xprt->state);
ret = sprintf(buf, "state=%s %s %s %s %s %s %s %s %s %s %s %s\n",
locked ? "LOCKED" : "",
connected ? "CONNECTED" : "",
connecting ? "CONNECTING" : "",
close_wait ? "CLOSE_WAIT" : "",
bound ? "BOUND" : "",
binding ? "BOUNDING" : "",
closing ? "CLOSING" : "",
congested ? "CONGESTED" : "",
cwnd_wait ? "CWND_WAIT" : "",
write_space ? "WRITE_SPACE" : "",
offline ? "OFFLINE" : "",
remove ? "REMOVE" : "");
}
xprt_put(xprt);
return ret;
}
static ssize_t rpc_sysfs_xprt_del_xprt_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
return sprintf(buf, "# delete this xprt\n");
}
static ssize_t rpc_sysfs_xprt_switch_info_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt_switch *xprt_switch =
rpc_sysfs_xprt_switch_kobj_get_xprt(kobj);
ssize_t ret;
if (!xprt_switch)
return 0;
ret = sprintf(buf, "num_xprts=%u\nnum_active=%u\n"
"num_unique_destaddr=%u\nqueue_len=%ld\n",
xprt_switch->xps_nxprts, xprt_switch->xps_nactive,
xprt_switch->xps_nunique_destaddr_xprts,
atomic_long_read(&xprt_switch->xps_queuelen));
xprt_switch_put(xprt_switch);
return ret;
}
static ssize_t rpc_sysfs_xprt_switch_add_xprt_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
return sprintf(buf, "# add one xprt to this xprt_switch\n");
}
static ssize_t rpc_sysfs_xprt_switch_add_xprt_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct rpc_xprt_switch *xprt_switch =
rpc_sysfs_xprt_switch_kobj_get_xprt(kobj);
struct xprt_create xprt_create_args;
struct rpc_xprt *xprt, *new;
if (!xprt_switch)
return 0;
xprt = rpc_xprt_switch_get_main_xprt(xprt_switch);
if (!xprt)
goto out;
xprt_create_args.ident = xprt->xprt_class->ident;
xprt_create_args.net = xprt->xprt_net;
xprt_create_args.dstaddr = (struct sockaddr *)&xprt->addr;
xprt_create_args.addrlen = xprt->addrlen;
xprt_create_args.servername = xprt->servername;
xprt_create_args.bc_xprt = xprt->bc_xprt;
xprt_create_args.xprtsec = xprt->xprtsec;
xprt_create_args.connect_timeout = xprt->connect_timeout;
xprt_create_args.reconnect_timeout = xprt->max_reconnect_timeout;
new = xprt_create_transport(&xprt_create_args);
if (IS_ERR_OR_NULL(new)) {
count = PTR_ERR(new);
goto out_put_xprt;
}
rpc_xprt_switch_add_xprt(xprt_switch, new);
xprt_put(new);
out_put_xprt:
xprt_put(xprt);
out:
xprt_switch_put(xprt_switch);
return count;
}
static ssize_t rpc_sysfs_xprt_dstaddr_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
struct sockaddr *saddr;
char *dst_addr;
int port;
struct xprt_addr *saved_addr;
size_t buf_len;
if (!xprt)
return 0;
if (!(xprt->xprt_class->ident == XPRT_TRANSPORT_TCP ||
xprt->xprt_class->ident == XPRT_TRANSPORT_TCP_TLS ||
xprt->xprt_class->ident == XPRT_TRANSPORT_RDMA)) {
xprt_put(xprt);
return -EOPNOTSUPP;
}
if (wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_KILLABLE)) {
count = -EINTR;
goto out_put;
}
saddr = (struct sockaddr *)&xprt->addr;
port = rpc_get_port(saddr);
buf_len = strcspn(buf, "\n");
dst_addr = kstrndup(buf, buf_len, GFP_KERNEL);
if (!dst_addr)
goto out_err;
saved_addr = kzalloc_obj(*saved_addr);
if (!saved_addr)
goto out_err_free;
saved_addr->addr =
rcu_dereference_raw(xprt->address_strings[RPC_DISPLAY_ADDR]);
rcu_assign_pointer(xprt->address_strings[RPC_DISPLAY_ADDR], dst_addr);
call_rcu(&saved_addr->rcu, free_xprt_addr);
xprt->addrlen = rpc_pton(xprt->xprt_net, buf, buf_len, saddr,
sizeof(*saddr));
rpc_set_port(saddr, port);
xprt_force_disconnect(xprt);
out:
xprt_release_write(xprt, NULL);
out_put:
xprt_put(xprt);
return count;
out_err_free:
kfree(dst_addr);
out_err:
count = -ENOMEM;
goto out;
}
static ssize_t rpc_sysfs_xprt_state_change(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
int offline = 0, online = 0, remove = 0;
struct rpc_xprt_switch *xps = rpc_sysfs_xprt_kobj_get_xprt_switch(kobj);
if (!xprt || !xps) {
count = 0;
goto out_put;
}
if (!strncmp(buf, "offline", 7))
offline = 1;
else if (!strncmp(buf, "online", 6))
online = 1;
else if (!strncmp(buf, "remove", 6))
remove = 1;
else {
count = -EINVAL;
goto out_put;
}
if (wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_KILLABLE)) {
count = -EINTR;
goto out_put;
}
if (xprt->main) {
count = -EINVAL;
goto release_tasks;
}
if (offline) {
xprt_set_offline_locked(xprt, xps);
} else if (online) {
xprt_set_online_locked(xprt, xps);
} else if (remove) {
if (test_bit(XPRT_OFFLINE, &xprt->state))
xprt_delete_locked(xprt, xps);
else
count = -EINVAL;
}
release_tasks:
xprt_release_write(xprt, NULL);
out_put:
xprt_put(xprt);
xprt_switch_put(xps);
return count;
}
static ssize_t rpc_sysfs_xprt_del_xprt(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
struct rpc_xprt_switch *xps = rpc_sysfs_xprt_kobj_get_xprt_switch(kobj);
if (!xprt || !xps) {
count = 0;
goto out;
}
if (xprt->main) {
count = -EINVAL;
goto release_tasks;
}
if (wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_KILLABLE)) {
count = -EINTR;
goto out_put;
}
xprt_set_offline_locked(xprt, xps);
xprt_delete_locked(xprt, xps);
release_tasks:
xprt_release_write(xprt, NULL);
out_put:
xprt_put(xprt);
xprt_switch_put(xps);
out:
return count;
}
int rpc_sysfs_init(void)
{
rpc_sunrpc_kset = kset_create_and_add("sunrpc", NULL, kernel_kobj);
if (!rpc_sunrpc_kset)
return -ENOMEM;
rpc_sunrpc_client_kobj =
rpc_sysfs_object_alloc("rpc-clients", rpc_sunrpc_kset, NULL);
if (!rpc_sunrpc_client_kobj)
goto err_client;
rpc_sunrpc_xprt_switch_kobj =
rpc_sysfs_object_alloc("xprt-switches", rpc_sunrpc_kset, NULL);
if (!rpc_sunrpc_xprt_switch_kobj)
goto err_switch;
return 0;
err_switch:
kobject_put(rpc_sunrpc_client_kobj);
rpc_sunrpc_client_kobj = NULL;
err_client:
kset_unregister(rpc_sunrpc_kset);
rpc_sunrpc_kset = NULL;
return -ENOMEM;
}
static void rpc_sysfs_client_release(struct kobject *kobj)
{
struct rpc_sysfs_client *c;
c = container_of(kobj, struct rpc_sysfs_client, kobject);
kfree(c);
}
static void rpc_sysfs_xprt_switch_release(struct kobject *kobj)
{
struct rpc_sysfs_xprt_switch *xprt_switch;
xprt_switch = container_of(kobj, struct rpc_sysfs_xprt_switch, kobject);
kfree(xprt_switch);
}
static void rpc_sysfs_xprt_release(struct kobject *kobj)
{
struct rpc_sysfs_xprt *xprt;
xprt = container_of(kobj, struct rpc_sysfs_xprt, kobject);
kfree(xprt);
}
static const void *rpc_sysfs_client_namespace(const struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_client, kobject)->net;
}
static const void *rpc_sysfs_xprt_switch_namespace(const struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_xprt_switch, kobject)->net;
}
static const void *rpc_sysfs_xprt_namespace(const struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_xprt,
kobject)->xprt->xprt_net;
}
static struct kobj_attribute rpc_sysfs_clnt_version = __ATTR(rpc_version,
0444, rpc_sysfs_clnt_version_show, NULL);
static struct kobj_attribute rpc_sysfs_clnt_program = __ATTR(program,
0444, rpc_sysfs_clnt_program_show, NULL);
static struct kobj_attribute rpc_sysfs_clnt_max_connect = __ATTR(max_connect,
0444, rpc_sysfs_clnt_max_connect_show, NULL);
static struct attribute *rpc_sysfs_rpc_clnt_attrs[] = {
&rpc_sysfs_clnt_version.attr,
&rpc_sysfs_clnt_program.attr,
&rpc_sysfs_clnt_max_connect.attr,
NULL,
};
ATTRIBUTE_GROUPS(rpc_sysfs_rpc_clnt);
static struct kobj_attribute rpc_sysfs_xprt_dstaddr = __ATTR(dstaddr,
0644, rpc_sysfs_xprt_dstaddr_show, rpc_sysfs_xprt_dstaddr_store);
static struct kobj_attribute rpc_sysfs_xprt_srcaddr = __ATTR(srcaddr,
0644, rpc_sysfs_xprt_srcaddr_show, NULL);
static struct kobj_attribute rpc_sysfs_xprt_xprtsec = __ATTR(xprtsec,
0644, rpc_sysfs_xprt_xprtsec_show, NULL);
static struct kobj_attribute rpc_sysfs_xprt_info = __ATTR(xprt_info,
0444, rpc_sysfs_xprt_info_show, NULL);
static struct kobj_attribute rpc_sysfs_xprt_change_state = __ATTR(xprt_state,
0644, rpc_sysfs_xprt_state_show, rpc_sysfs_xprt_state_change);
static struct kobj_attribute rpc_sysfs_xprt_del = __ATTR(del_xprt,
0644, rpc_sysfs_xprt_del_xprt_show, rpc_sysfs_xprt_del_xprt);
static struct attribute *rpc_sysfs_xprt_attrs[] = {
&rpc_sysfs_xprt_dstaddr.attr,
&rpc_sysfs_xprt_srcaddr.attr,
&rpc_sysfs_xprt_xprtsec.attr,
&rpc_sysfs_xprt_info.attr,
&rpc_sysfs_xprt_change_state.attr,
&rpc_sysfs_xprt_del.attr,
NULL,
};
ATTRIBUTE_GROUPS(rpc_sysfs_xprt);
static struct kobj_attribute rpc_sysfs_xprt_switch_info =
__ATTR(xprt_switch_info, 0444, rpc_sysfs_xprt_switch_info_show, NULL);
static struct kobj_attribute rpc_sysfs_xprt_switch_add_xprt =
__ATTR(add_xprt, 0644, rpc_sysfs_xprt_switch_add_xprt_show,
rpc_sysfs_xprt_switch_add_xprt_store);
static struct attribute *rpc_sysfs_xprt_switch_attrs[] = {
&rpc_sysfs_xprt_switch_info.attr,
&rpc_sysfs_xprt_switch_add_xprt.attr,
NULL,
};
ATTRIBUTE_GROUPS(rpc_sysfs_xprt_switch);
static const struct kobj_type rpc_sysfs_client_type = {
.release = rpc_sysfs_client_release,
.default_groups = rpc_sysfs_rpc_clnt_groups,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = rpc_sysfs_client_namespace,
};
static const struct kobj_type rpc_sysfs_xprt_switch_type = {
.release = rpc_sysfs_xprt_switch_release,
.default_groups = rpc_sysfs_xprt_switch_groups,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = rpc_sysfs_xprt_switch_namespace,
};
static const struct kobj_type rpc_sysfs_xprt_type = {
.release = rpc_sysfs_xprt_release,
.default_groups = rpc_sysfs_xprt_groups,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = rpc_sysfs_xprt_namespace,
};
void rpc_sysfs_exit(void)
{
kobject_put(rpc_sunrpc_client_kobj);
kobject_put(rpc_sunrpc_xprt_switch_kobj);
kset_unregister(rpc_sunrpc_kset);
}
static struct rpc_sysfs_client *rpc_sysfs_client_alloc(struct kobject *parent,
struct net *net,
int clid)
{
struct rpc_sysfs_client *p;
p = kzalloc_obj(*p);
if (p) {
p->net = net;
p->kobject.kset = rpc_sunrpc_kset;
if (kobject_init_and_add(&p->kobject, &rpc_sysfs_client_type,
parent, "clnt-%d", clid) == 0)
return p;
kobject_put(&p->kobject);
}
return NULL;
}
static struct rpc_sysfs_xprt_switch *
rpc_sysfs_xprt_switch_alloc(struct kobject *parent,
struct rpc_xprt_switch *xprt_switch,
struct net *net,
gfp_t gfp_flags)
{
struct rpc_sysfs_xprt_switch *p;
p = kzalloc_obj(*p, gfp_flags);
if (p) {
p->net = net;
p->kobject.kset = rpc_sunrpc_kset;
if (kobject_init_and_add(&p->kobject,
&rpc_sysfs_xprt_switch_type,
parent, "switch-%d",
xprt_switch->xps_id) == 0)
return p;
kobject_put(&p->kobject);
}
return NULL;
}
static struct rpc_sysfs_xprt *rpc_sysfs_xprt_alloc(struct kobject *parent,
struct rpc_xprt *xprt,
gfp_t gfp_flags)
{
struct rpc_sysfs_xprt *p;
p = kzalloc_obj(*p, gfp_flags);
if (!p)
goto out;
p->kobject.kset = rpc_sunrpc_kset;
if (kobject_init_and_add(&p->kobject, &rpc_sysfs_xprt_type,
parent, "xprt-%d-%s", xprt->id,
xprt->address_strings[RPC_DISPLAY_PROTO]) == 0)
return p;
kobject_put(&p->kobject);
out:
return NULL;
}
void rpc_sysfs_client_setup(struct rpc_clnt *clnt,
struct rpc_xprt_switch *xprt_switch,
struct net *net)
{
struct rpc_sysfs_client *rpc_client;
struct rpc_sysfs_xprt_switch *xswitch =
(struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs;
if (!xswitch)
return;
rpc_client = rpc_sysfs_client_alloc(rpc_sunrpc_client_kobj,
net, clnt->cl_clid);
if (rpc_client) {
char name[] = "switch";
int ret;
clnt->cl_sysfs = rpc_client;
rpc_client->clnt = clnt;
rpc_client->xprt_switch = xprt_switch;
kobject_uevent(&rpc_client->kobject, KOBJ_ADD);
ret = sysfs_create_link_nowarn(&rpc_client->kobject,
&xswitch->kobject, name);
if (ret)
pr_warn("can't create link to %s in sysfs (%d)\n",
name, ret);
}
}
void rpc_sysfs_xprt_switch_setup(struct rpc_xprt_switch *xprt_switch,
struct rpc_xprt *xprt,
gfp_t gfp_flags)
{
struct rpc_sysfs_xprt_switch *rpc_xprt_switch;
struct net *net;
if (xprt_switch->xps_net)
net = xprt_switch->xps_net;
else
net = xprt->xprt_net;
rpc_xprt_switch =
rpc_sysfs_xprt_switch_alloc(rpc_sunrpc_xprt_switch_kobj,
xprt_switch, net, gfp_flags);
if (rpc_xprt_switch) {
xprt_switch->xps_sysfs = rpc_xprt_switch;
rpc_xprt_switch->xprt_switch = xprt_switch;
rpc_xprt_switch->xprt = xprt;
kobject_uevent(&rpc_xprt_switch->kobject, KOBJ_ADD);
} else {
xprt_switch->xps_sysfs = NULL;
}
}
void rpc_sysfs_xprt_setup(struct rpc_xprt_switch *xprt_switch,
struct rpc_xprt *xprt,
gfp_t gfp_flags)
{
struct rpc_sysfs_xprt *rpc_xprt;
struct rpc_sysfs_xprt_switch *switch_obj =
(struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs;
if (!switch_obj)
return;
rpc_xprt = rpc_sysfs_xprt_alloc(&switch_obj->kobject, xprt, gfp_flags);
if (rpc_xprt) {
xprt->xprt_sysfs = rpc_xprt;
rpc_xprt->xprt = xprt;
rpc_xprt->xprt_switch = xprt_switch;
kobject_uevent(&rpc_xprt->kobject, KOBJ_ADD);
}
}
void rpc_sysfs_client_destroy(struct rpc_clnt *clnt)
{
struct rpc_sysfs_client *rpc_client = clnt->cl_sysfs;
if (rpc_client) {
char name[] = "switch";
sysfs_remove_link(&rpc_client->kobject, name);
kobject_uevent(&rpc_client->kobject, KOBJ_REMOVE);
kobject_del(&rpc_client->kobject);
kobject_put(&rpc_client->kobject);
clnt->cl_sysfs = NULL;
}
}
void rpc_sysfs_xprt_switch_destroy(struct rpc_xprt_switch *xprt_switch)
{
struct rpc_sysfs_xprt_switch *rpc_xprt_switch = xprt_switch->xps_sysfs;
if (rpc_xprt_switch) {
kobject_uevent(&rpc_xprt_switch->kobject, KOBJ_REMOVE);
kobject_del(&rpc_xprt_switch->kobject);
kobject_put(&rpc_xprt_switch->kobject);
xprt_switch->xps_sysfs = NULL;
}
}
void rpc_sysfs_xprt_destroy(struct rpc_xprt *xprt)
{
struct rpc_sysfs_xprt *rpc_xprt = xprt->xprt_sysfs;
if (rpc_xprt) {
kobject_uevent(&rpc_xprt->kobject, KOBJ_REMOVE);
kobject_del(&rpc_xprt->kobject);
kobject_put(&rpc_xprt->kobject);
xprt->xprt_sysfs = NULL;
}
}
