Iterate thru available transports in the xprt_switch for all
trunkable transports offline and possibly remote them as well.
Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
---
include/linux/sunrpc/clnt.h | 1 +
net/sunrpc/clnt.c | 46 +++++++++++++++++++++++++++++++++++++
2 files changed, 47 insertions(+)
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 90501404fa49..d14333f4947a 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -234,6 +234,7 @@ int rpc_clnt_setup_test_and_add_xprt(struct rpc_clnt *,
struct rpc_xprt_switch *,
struct rpc_xprt *,
void *);
+void rpc_clnt_manage_trunked_xprts(struct rpc_clnt *);
const char *rpc_proc_name(const struct rpc_task *task);
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index a97d4e06cae3..2b079c4d8af1 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -3000,6 +3000,52 @@ int rpc_clnt_add_xprt(struct rpc_clnt *clnt,
}
EXPORT_SYMBOL_GPL(rpc_clnt_add_xprt);
+static int rpc_xprt_offline(struct rpc_clnt *clnt,
+ struct rpc_xprt *xprt,
+ void *data)
+{
+ struct rpc_xprt *main_xprt;
+ struct rpc_xprt_switch *xps;
+ int err = 0;
+
+ xprt_get(xprt);
+
+ rcu_read_lock();
+ main_xprt = xprt_get(rcu_dereference(clnt->cl_xprt));
+ xps = xprt_switch_get(rcu_dereference(clnt->cl_xpi.xpi_xpswitch));
+ err = rpc_cmp_addr_port((struct sockaddr *)&xprt->addr,
+ (struct sockaddr *)&main_xprt->addr);
+ rcu_read_unlock();
+ xprt_put(main_xprt);
+ if (err)
+ goto out;
+
+ if (wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_KILLABLE)) {
+ err = -EINTR;
+ goto out;
+ }
+ xprt_set_offline_locked(xprt, xps);
+
+ xprt_release_write(xprt, NULL);
+out:
+ xprt_put(xprt);
+ xprt_switch_put(xps);
+ return err;
+}
+
+/* rpc_clnt_manage_trunked_xprts -- offline trunked transports
+ * @clnt rpc_clnt structure
+ *
+ * For each active transport found in the rpc_clnt structure call
+ * the function rpc_xprt_offline() which will identify trunked transports
+ * and will mark them offline.
+ */
+void rpc_clnt_manage_trunked_xprts(struct rpc_clnt *clnt)
+{
+ rpc_clnt_iterate_for_each_xprt(clnt, rpc_xprt_offline, NULL);
+}
+EXPORT_SYMBOL_GPL(rpc_clnt_manage_trunked_xprts);
+
struct connect_timeout_data {
unsigned long connect_timeout;
unsigned long reconnect_timeout;
--
2.27.0
