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From: Olga Kornievskaia <olga.kornievskaia@gmail.com>
To: trond.myklebust@hammerspace.com, anna.schumaker@netapp.com
Cc: linux-nfs@vger.kernel.org
Subject: [PATCH v8 13/13] sunrpc: provide showing transport's state info in the sysfs directory
Date: Tue,  1 Jun 2021 18:09:15 -0400	[thread overview]
Message-ID: <20210601220915.18975-14-olga.kornievskaia@gmail.com> (raw)
In-Reply-To: <20210601220915.18975-1-olga.kornievskaia@gmail.com>

From: Olga Kornievskaia <kolga@netapp.com>

In preparation of being able to change the xprt's state, add a way
to show currect state of the transport.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
---
 net/sunrpc/sysfs.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/net/sunrpc/sysfs.c b/net/sunrpc/sysfs.c
index db2ae28bd0c3..887123e0de1a 100644
--- a/net/sunrpc/sysfs.c
+++ b/net/sunrpc/sysfs.c
@@ -112,6 +112,49 @@ static ssize_t rpc_sysfs_xprt_info_show(struct kobject *kobj,
 	return ret + 1;
 }
 
+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;
+
+	if (!xprt)
+		return 0;
+
+	if (!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);
+
+		ret = sprintf(buf, "state=%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" : "");
+	}
+
+	xprt_put(xprt);
+	return ret + 1;
+}
+
 static ssize_t rpc_sysfs_xprt_switch_info_show(struct kobject *kobj,
 					       struct kobj_attribute *attr,
 					       char *buf)
@@ -250,9 +293,13 @@ static struct kobj_attribute rpc_sysfs_xprt_dstaddr = __ATTR(dstaddr,
 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, NULL);
+
 static struct attribute *rpc_sysfs_xprt_attrs[] = {
 	&rpc_sysfs_xprt_dstaddr.attr,
 	&rpc_sysfs_xprt_info.attr,
+	&rpc_sysfs_xprt_change_state.attr,
 	NULL,
 };
 
-- 
2.27.0


      parent reply	other threads:[~2021-06-01 22:09 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-01 22:09 [PATCH v8 00/13] create sysfs files for changing IP address Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 01/13] sunrpc: Create a sunrpc directory under /sys/kernel/ Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 02/13] sunrpc: Create a client/ subdirectory in the sunrpc sysfs Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 03/13] sunrpc: Create per-rpc_clnt sysfs kobjects Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 04/13] sunrpc: add xprt id Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 05/13] sunrpc: add IDs to multipath Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 06/13] sunrpc: keep track of the xprt_class in rpc_xprt structure Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 07/13] sunrpc: add xprt_switch direcotry to sunrpc's sysfs Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 08/13] sunrpc: add a symlink from rpc-client directory to the xprt_switch Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 09/13] sunrpc: add add sysfs directory per xprt under each xprt_switch Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 10/13] sunrpc: add dst_attr attributes to the sysfs xprt directory Olga Kornievskaia
2021-06-02  9:28   ` kernel test robot
2021-06-02  9:28     ` kernel test robot
2021-06-03  1:10   ` kernel test robot
2021-06-03  1:10     ` kernel test robot
2021-06-01 22:09 ` [PATCH v8 11/13] sunrpc: provide transport info in the sysfs directory Olga Kornievskaia
2021-06-01 22:09 ` [PATCH v8 12/13] sunrpc: provide multipath " Olga Kornievskaia
2021-06-01 22:09 ` Olga Kornievskaia [this message]

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