/*
 * linux/net/sunrpc/sysctl.c
 *
 * Sysctl interface to sunrpc module.
 *
 * I would prefer to register the sunrpc table below sys/net, but that's
 * impossible at the moment.
 */

#include <linux/types.h>
#include <linux/linkage.h>
#include <linux/ctype.h>
#include <linux/fs.h>
#include <linux/sysctl.h>
#include <linux/module.h>

#include <linux/uaccess.h>
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/svc_xprt.h>

#include "netns.h"

/*
 * Declare the debug flags here
 */
unsigned int	rpc_debug;
EXPORT_SYMBOL_GPL(rpc_debug);

unsigned int	nfs_debug;
EXPORT_SYMBOL_GPL(nfs_debug);

unsigned int	nfsd_debug;
EXPORT_SYMBOL_GPL(nfsd_debug);

unsigned int	nlm_debug;
EXPORT_SYMBOL_GPL(nlm_debug);

#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)

static struct ctl_table_header *sunrpc_table_header;
static struct ctl_table sunrpc_table[];

void
rpc_register_sysctl(void)
{
	if (!sunrpc_table_header)
		sunrpc_table_header = register_sysctl_table(sunrpc_table);
}

void
rpc_unregister_sysctl(void)
{
	if (sunrpc_table_header) {
		unregister_sysctl_table(sunrpc_table_header);
		sunrpc_table_header = NULL;
	}
}

static int proc_do_xprt(struct ctl_table *table, int write,
			void __user *buffer, size_t *lenp, loff_t *ppos)
{
	char tmpbuf[256];
	size_t len;

	if ((*ppos && !write) || !*lenp) {
		*lenp = 0;
		return 0;
	}
	len = svc_print_xprts(tmpbuf, sizeof(tmpbuf));
	return simple_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len);
}

static int
proc_dodebug(struct ctl_table *table, int write,
				void __user *buffer, size_t *lenp, loff_t *ppos)
{
	char		tmpbuf[20], c, *s = NULL;
	char __user *p;
	unsigned int	value;
	size_t		left, len;

	if ((*ppos && !write) || !*lenp) {
		*lenp = 0;
		return 0;
	}

	left = *lenp;

	if (write) {
		if (!access_ok(VERIFY_READ, buffer, left))
			return -EFAULT;
		p = buffer;
		while (left && __get_user(c, p) >= 0 && isspace(c))
			left--, p++;
		if (!left)
			goto done;

		if (left > sizeof(tmpbuf) - 1)
			return -EINVAL;
		if (copy_from_user(tmpbuf, p, left))
			return -EFAULT;
		tmpbuf[left] = '\0';

		value = simple_strtol(tmpbuf, &s, 0);
		if (s) {
			left -= (s - tmpbuf);
			if (left && !isspace(*s))
				return -EINVAL;
			while (left && isspace(*s))
				left--, s++;
		} else
			left = 0;
		*(unsigned int *) table->data = value;
		/* Display the RPC tasks on writing to rpc_debug */
		if (strcmp(table->procname, "rpc_debug") == 0)
			rpc_show_tasks(&init_net);
	} else {
		len = sprintf(tmpbuf, "0x%04x", *(unsigned int *) table->data);
		if (len > left)
			len = left;
		if (copy_to_user(buffer, tmpbuf, len))
			return -EFAULT;
		if ((left -= len) > 0) {
			if (put_user('\n', (char __user *)buffer + len))
				return -EFAULT;
			left--;
		}
	}

done:
	*lenp -= left;
	*ppos += *lenp;
	return 0;
}


static struct ctl_table debug_table[] = {
	{
		.procname	= "rpc_debug",
		.data		= &rpc_debug,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dodebug
	},
	{
		.procname	= "nfs_debug",
		.data		= &nfs_debug,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dodebug
	},
	{
		.procname	= "nfsd_debug",
		.data		= &nfsd_debug,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dodebug
	},
	{
		.procname	= "nlm_debug",
		.data		= &nlm_debug,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dodebug
	},
	{
		.procname	= "transports",
		.maxlen		= 256,
		.mode		= 0444,
		.proc_handler	= proc_do_xprt,
	},
	{ }
};

static struct ctl_table sunrpc_table[] = {
	{
		.procname	= "sunrpc",
		.mode		= 0555,
		.child		= debug_table
	},
	{ }
};

#endif
5</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Sowmini Varadhan &lt;sowmini.varadhan@oracle.com&gt;</td><td class='right'>2017-01-10 07:47:15 -0800</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-10 21:02:42 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/kvm?id=a505e58252715bbc18a0ee1abae23615fe2586db'>a505e58252715bbc18a0ee1abae23615fe2586db</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/kvm?id=a505e58252715bbc18a0ee1abae23615fe2586db'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=a505e58252715bbc18a0ee1abae23615fe2586db'>d816d838641ba1082b2356f4e3a365039e63b14d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/kvm?id=a505e58252715bbc18a0ee1abae23615fe2586db'>include/kvm</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/kvm?id=3bf003335ba356aac5a43e28640159d4ae8a2a60'>3bf003335ba356aac5a43e28640159d4ae8a2a60</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/kvm?id=a505e58252715bbc18a0ee1abae23615fe2586db&amp;id2=3bf003335ba356aac5a43e28640159d4ae8a2a60'>diff</a>)</td></tr></table>
<div class='commit-subject'>packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3</div><div class='commit-msg'>Commit 7f953ab2ba46 ("af_packet: TX_RING support for TPACKET_V3")
now makes it possible to use TX_RING with TPACKET_V3, so make the
the relevant information available via 'ss -e -a --packet'

Signed-off-by: Sowmini Varadhan &lt;sowmini.varadhan@oracle.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=a505e58252715bbc18a0ee1abae23615fe2586db'>Diffstat</a> (limited to 'include/kvm')</div><table summary='diffstat' class='diffstat'>