/* RxRPC security handling
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#include <linux/module.h>
#include <linux/net.h>
#include <linux/skbuff.h>
#include <linux/udp.h>
#include <linux/crypto.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include <keys/rxrpc-type.h>
#include "ar-internal.h"

static LIST_HEAD(rxrpc_security_methods);
static DECLARE_RWSEM(rxrpc_security_sem);

static const struct rxrpc_security *rxrpc_security_types[] = {
	[RXRPC_SECURITY_NONE]	= &rxrpc_no_security,
#ifdef CONFIG_RXKAD
	[RXRPC_SECURITY_RXKAD]	= &rxkad,
#endif
};

int __init rxrpc_init_security(void)
{
	int i, ret;

	for (i = 0; i < ARRAY_SIZE(rxrpc_security_types); i++) {
		if (rxrpc_security_types[i]) {
			ret = rxrpc_security_types[i]->init();
			if (ret < 0)
				goto failed;
		}
	}

	return 0;

failed:
	for (i--; i >= 0; i--)
		if (rxrpc_security_types[i])
			rxrpc_security_types[i]->exit();
	return ret;
}

void rxrpc_exit_security(void)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(rxrpc_security_types); i++)
		if (rxrpc_security_types[i])
			rxrpc_security_types[i]->exit();
}

/*
 * look up an rxrpc security module
 */
static const struct rxrpc_security *rxrpc_security_lookup(u8 security_index)
{
	if (security_index >= ARRAY_SIZE(rxrpc_security_types))
		return NULL;
	return rxrpc_security_types[security_index];
}

/*
 * initialise the security on a client connection
 */
int rxrpc_init_client_conn_security(struct rxrpc_connection *conn)
{
	const struct rxrpc_security *sec;
	struct rxrpc_key_token *token;
	struct key *key = conn->params.key;
	int ret;

	_enter("{%d},{%x}", conn->debug_id, key_serial(key));

	if (!key)
		return 0;

	ret = key_validate(key);
	if (ret < 0)
		return ret;

	token = key->payload.data[0];
	if (!token)
		return -EKEYREJECTED;

	sec = rxrpc_security_lookup(token->security_index);
	if (!sec)
		return -EKEYREJECTED;
	conn->security = sec;

	ret = conn->security->init_connection_security(conn);
	if (ret < 0) {
		conn->security = &rxrpc_no_security;
		return ret;
	}

	_leave(" = 0");
	return 0;
}

/*
 * initialise the security on a server connection
 */
int rxrpc_init_server_conn_security(struct rxrpc_connection *conn)
{
	const struct rxrpc_security *sec;
	struct rxrpc_local *local = conn->params.local;
	struct rxrpc_sock *rx;
	struct key *key;
	key_ref_t kref;
	char kdesc[5 + 1 + 3 + 1];

	_enter("");

	sprintf(kdesc, "%u:%u", conn->params.service_id, conn->security_ix);

	sec = rxrpc_security_lookup(conn->security_ix);
	if (!sec) {
		_leave(" = -ENOKEY [lookup]");
		return -ENOKEY;
	}

	/* find the service */
	read_lock(&local->services_lock);
	rx = rcu_dereference_protected(local->service,
				       lockdep_is_held(&local->services_lock));
	if (rx && rx->srx.srx_service == conn->params.service_id)
		goto found_service;

	/* the service appears to have died */
	read_unlock(&local->services_lock);
	_leave(" = -ENOENT");
	return -ENOENT;

found_service:
	if (!rx->securities) {
		read_unlock(&local->services_lock);
		_leave(" = -ENOKEY");
		return -ENOKEY;
	}

	/* look through the service's keyring */
	kref = keyring_search(make_key_ref(rx->securities, 1UL),
			      &key_type_rxrpc_s, kdesc);
	if (IS_ERR(kref)) {
		read_unlock(&local->services_lock);
		_leave(" = %ld [search]", PTR_ERR(kref));
		return PTR_ERR(kref);
	}

	key = key_ref_to_ptr(kref);
	read_unlock(&local->services_lock);

	conn->server_key = key;
	conn->security = sec;

	_leave(" = 0");
	return 0;
}
ption><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</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>Raju Lakkaraju &lt;Raju.Lakkaraju@microsemi.com&gt;</td><td class='right'>2017-02-07 19:10:26 +0530</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-08 13:29:04 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/scsi_transport_sas.h?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>04d8a0a5f3b6887543850d991a5e37c4ec90e250</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/scsi/scsi_transport_sas.h?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>ee1fafb2122c2b29c7cb19e571bd7229afdbf847</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/scsi/scsi_transport_sas.h?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>include/scsi/scsi_transport_sas.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/scsi_transport_sas.h?id=ff4cf0e5ce952488074aa7f47734af1794f55fbc'>ff4cf0e5ce952488074aa7f47734af1794f55fbc</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/scsi/scsi_transport_sas.h?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250&amp;id2=ff4cf0e5ce952488074aa7f47734af1794f55fbc'>diff</a>)</td></tr></table>
<div class='commit-subject'>net: phy: Add LED mode driver for Microsemi PHYs.</div><div class='commit-msg'>LED Mode:
Microsemi PHY support 2 LEDs (LED[0] and LED[1]) to display different
status information that can be selected by setting LED mode.

LED Mode parameter (vsc8531, led-0-mode) and (vsc8531, led-1-mode) get
from Device Tree.

Signed-off-by: Raju Lakkaraju &lt;Raju.Lakkaraju@microsemi.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=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>Diffstat</a> (limited to 'include/scsi/scsi_transport_sas.h')</div><table summary='diffstat' class='diffstat'>