From: Olga Kornievskaia <kolga@xxxxxxxxxx>
Add individual transport directories under each transport switch
group. For instance, for each nconnect=X connections there will be
a transport directory. Naming conventions also identifies transport
type -- xprt-<id>-<type> where type is udp, tcp, rdma, local, bc.
Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
---
include/linux/sunrpc/xprt.h | 2 ++
net/sunrpc/sysfs.c | 67 +++++++++++++++++++++++++++++++++++++
net/sunrpc/sysfs.h | 8 +++++
net/sunrpc/xprtmultipath.c | 4 +++
4 files changed, 81 insertions(+)
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index a2edcc42e6c4..823663c6380a 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -183,6 +183,7 @@ enum xprt_transports {
XPRT_TRANSPORT_LOCAL = 257,
};
+struct rpc_sysfs_xprt;
struct rpc_xprt {
struct kref kref; /* Reference count */
const struct rpc_xprt_ops *ops; /* transport methods */
@@ -291,6 +292,7 @@ struct rpc_xprt {
#endif
struct rcu_head rcu;
const struct xprt_class *xprt_class;
+ struct rpc_sysfs_xprt *xprt_sysfs;
};
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
diff --git a/net/sunrpc/sysfs.c b/net/sunrpc/sysfs.c
index 98d27273d988..78c0ff879424 100644
--- a/net/sunrpc/sysfs.c
+++ b/net/sunrpc/sysfs.c
@@ -82,6 +82,14 @@ static void rpc_sysfs_xprt_switch_release(struct kobject *kobj)
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(struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_client, kobject)->net;
@@ -92,6 +100,12 @@ static const void *rpc_sysfs_xprt_switch_namespace(struct kobject *kobj)
return container_of(kobj, struct rpc_sysfs_xprt_switch, kobject)->net;
}
+static const void *rpc_sysfs_xprt_namespace(struct kobject *kobj)
+{
+ return container_of(kobj, struct rpc_sysfs_xprt,
+ kobject)->xprt->xprt_net;
+}
+
static struct kobj_type rpc_sysfs_client_type = {
.release = rpc_sysfs_client_release,
.sysfs_ops = &kobj_sysfs_ops,
@@ -104,6 +118,12 @@ static struct kobj_type rpc_sysfs_xprt_switch_type = {
.namespace = rpc_sysfs_xprt_switch_namespace,
};
+static struct kobj_type rpc_sysfs_xprt_type = {
+ .release = rpc_sysfs_xprt_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+ .namespace = rpc_sysfs_xprt_namespace,
+};
+
void rpc_sysfs_exit(void)
{
kobject_put(rpc_sunrpc_client_kobj);
@@ -151,6 +171,25 @@ rpc_sysfs_xprt_switch_alloc(struct kobject *parent,
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(sizeof(*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)
@@ -200,6 +239,22 @@ void rpc_sysfs_xprt_switch_setup(struct rpc_xprt_switch *xprt_switch,
}
}
+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;
+
+ rpc_xprt = rpc_sysfs_xprt_alloc(&switch_obj->kobject, xprt, gfp_flags);
+ if (rpc_xprt) {
+ xprt->xprt_sysfs = rpc_xprt;
+ rpc_xprt->xprt = xprt;
+ 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;
@@ -228,3 +283,15 @@ void rpc_sysfs_xprt_switch_destroy(struct rpc_xprt_switch *xprt_switch)
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;
+ }
+}
diff --git a/net/sunrpc/sysfs.h b/net/sunrpc/sysfs.h
index 760f0582aee5..ff10451de6fa 100644
--- a/net/sunrpc/sysfs.h
+++ b/net/sunrpc/sysfs.h
@@ -19,6 +19,11 @@ struct rpc_sysfs_xprt_switch {
struct rpc_xprt *xprt;
};
+struct rpc_sysfs_xprt {
+ struct kobject kobject;
+ struct rpc_xprt *xprt;
+};
+
int rpc_sysfs_init(void);
void rpc_sysfs_exit(void);
@@ -29,5 +34,8 @@ void rpc_sysfs_client_destroy(struct rpc_clnt *clnt);
void rpc_sysfs_xprt_switch_setup(struct rpc_xprt_switch *xprt_switch,
struct rpc_xprt *xprt, gfp_t gfp_flags);
void rpc_sysfs_xprt_switch_destroy(struct rpc_xprt_switch *xprt);
+void rpc_sysfs_xprt_setup(struct rpc_xprt_switch *xprt_switch,
+ struct rpc_xprt *xprt, gfp_t gfp_flags);
+void rpc_sysfs_xprt_destroy(struct rpc_xprt *xprt);
#endif
diff --git a/net/sunrpc/xprtmultipath.c b/net/sunrpc/xprtmultipath.c
index 2d73a35df9ee..e7973c1ff70c 100644
--- a/net/sunrpc/xprtmultipath.c
+++ b/net/sunrpc/xprtmultipath.c
@@ -57,6 +57,7 @@ void rpc_xprt_switch_add_xprt(struct rpc_xprt_switch *xps,
if (xps->xps_net == xprt->xprt_net || xps->xps_net == NULL)
xprt_switch_add_xprt_locked(xps, xprt);
spin_unlock(&xps->xps_lock);
+ rpc_sysfs_xprt_setup(xps, xprt, GFP_KERNEL);
}
static void xprt_switch_remove_xprt_locked(struct rpc_xprt_switch *xps,
@@ -85,6 +86,7 @@ void rpc_xprt_switch_remove_xprt(struct rpc_xprt_switch *xps,
spin_lock(&xps->xps_lock);
xprt_switch_remove_xprt_locked(xps, xprt);
spin_unlock(&xps->xps_lock);
+ rpc_sysfs_xprt_destroy(xprt);
xprt_put(xprt);
}
@@ -137,6 +139,7 @@ struct rpc_xprt_switch *xprt_switch_alloc(struct rpc_xprt *xprt,
xps->xps_iter_ops = &rpc_xprt_iter_singular;
rpc_sysfs_xprt_switch_setup(xps, xprt, gfp_flags);
xprt_switch_add_xprt_locked(xps, xprt);
+ rpc_sysfs_xprt_setup(xps, xprt, gfp_flags);
}
return xps;
@@ -152,6 +155,7 @@ static void xprt_switch_free_entries(struct rpc_xprt_switch *xps)
struct rpc_xprt, xprt_switch);
xprt_switch_remove_xprt_locked(xps, xprt);
spin_unlock(&xps->xps_lock);
+ rpc_sysfs_xprt_destroy(xprt);
xprt_put(xprt);
spin_lock(&xps->xps_lock);
}
--
2.27.0
