Commit 4a09651a authored by Olga Kornievskaia's avatar Olga Kornievskaia Committed by Trond Myklebust
Browse files

sunrpc: provide transport info in the sysfs directory 



Allow to query transport's attributes. Currently showing following
fields of the rpc_xprt structure: state, last_used, cong, cwnd,
max_reqs, min_reqs, num_reqs, sizes of queues binding, sending,
pending, backlog.

Signed-off-by: default avatarOlga Kornievskaia <kolga@netapp.com>
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent 587bc725

net/sunrpc/sysfs.c

+25 −0
Original line number Diff line number Diff line
@@ -81,6 +81,27 @@ static ssize_t rpc_sysfs_xprt_dstaddr_show(struct kobject *kobj, 
	return ret + 1;

}



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);

	ssize_t ret;



	if (!xprt)

		return 0;



	ret = sprintf(buf, "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\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_put(xprt);

	return ret + 1;

}



static ssize_t rpc_sysfs_xprt_dstaddr_store(struct kobject *kobj,

					    struct kobj_attribute *attr,

					    const char *buf, size_t count)
@@ -205,8 +226,12 @@ static const void *rpc_sysfs_xprt_namespace(struct kobject *kobj) 
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_info = __ATTR(xprt_info,

	0444, rpc_sysfs_xprt_info_show, NULL);



static struct attribute *rpc_sysfs_xprt_attrs[] = {

	&rpc_sysfs_xprt_dstaddr.attr,

	&rpc_sysfs_xprt_info.attr,

	NULL,

};