/* AF_RXRPC local endpoint management
 *
 * 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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>
#include <linux/net.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include <generated/utsrelease.h>
#include "ar-internal.h"

static const char rxrpc_version_string[65] = "linux-" UTS_RELEASE " AF_RXRPC";

/*
 * Reply to a version request
 */
static void rxrpc_send_version_request(struct rxrpc_local *local,
				       struct rxrpc_host_header *hdr,
				       struct sk_buff *skb)
{
	struct rxrpc_wire_header whdr;
	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
	struct sockaddr_rxrpc srx;
	struct msghdr msg;
	struct kvec iov[2];
	size_t len;
	int ret;

	_enter("");

	if (rxrpc_extract_addr_from_skb(&srx, skb) < 0)
		return;

	msg.msg_name	= &srx.transport;
	msg.msg_namelen	= srx.transport_len;
	msg.msg_control	= NULL;
	msg.msg_controllen = 0;
	msg.msg_flags	= 0;

	whdr.epoch	= htonl(sp->hdr.epoch);
	whdr.cid	= htonl(sp->hdr.cid);
	whdr.callNumber	= htonl(sp->hdr.callNumber);
	whdr.seq	= 0;
	whdr.serial	= 0;
	whdr.type	= RXRPC_PACKET_TYPE_VERSION;
	whdr.flags	= RXRPC_LAST_PACKET | (~hdr->flags & RXRPC_CLIENT_INITIATED);
	whdr.userStatus	= 0;
	whdr.securityIndex = 0;
	whdr._rsvd	= 0;
	whdr.serviceId	= htons(sp->hdr.serviceId);

	iov[0].iov_base	= &whdr;
	iov[0].iov_len	= sizeof(whdr);
	iov[1].iov_base	= (char *)rxrpc_version_string;
	iov[1].iov_len	= sizeof(rxrpc_version_string);

	len = iov[0].iov_len + iov[1].iov_len;

	_proto("Tx VERSION (reply)");

	ret = kernel_sendmsg(local->socket, &msg, iov, 2, len);
	if (ret < 0)
		_debug("sendmsg failed: %d", ret);

	_leave("");
}

/*
 * Process event packets targetted at a local endpoint.
 */
void rxrpc_process_local_events(struct rxrpc_local *local)
{
	struct sk_buff *skb;
	char v;

	_enter("");

	skb = skb_dequeue(&local->event_queue);
	if (skb) {
		struct rxrpc_skb_priv *sp = rxrpc_skb(skb);

		rxrpc_see_skb(skb, rxrpc_skb_rx_seen);
		_debug("{%d},{%u}", local->debug_id, sp->hdr.type);

		switch (sp->hdr.type) {
		case RXRPC_PACKET_TYPE_VERSION:
			if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header),
					  &v, 1) < 0)
				return;
			_proto("Rx VERSION { %02x }", v);
			if (v == 0)
				rxrpc_send_version_request(local, &sp->hdr, skb);
			break;

		default:
			/* Just ignore anything we don't understand */
			break;
		}

		rxrpc_free_skb(skb, rxrpc_skb_rx_freed);
	}

	_leave("");
}
ref='/cgit.cgi/linux/net-next.git/log/tools/objtool?id=027eb72cbcf81561867a764074964e2ce9828398'>objtool</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/objtool/arch?id=027eb72cbcf81561867a764074964e2ce9828398'>arch</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/objtool/arch?id=027eb72cbcf81561867a764074964e2ce9828398&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
'get'><input type='hidden' name='id' value='0b529f143e8baad441a5aac9ad55ec2434d8fb46'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><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>Harsh Jain &lt;harsh@chelsio.com&gt;</td><td class='right'>2017-02-01 21:10:28 +0530</td></tr>
<tr><th>committer</th><td>Herbert Xu &lt;herbert@gondor.apana.org.au&gt;</td><td class='right'>2017-02-03 17:45:48 +0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/oxygen/oxygen_pcm.c?id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>0b529f143e8baad441a5aac9ad55ec2434d8fb46</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/pci/oxygen/oxygen_pcm.c?id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>fd816e548e12745d4776ad0bd661bec142d3ea06</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/pci/oxygen/oxygen_pcm.c?id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>sound/pci/oxygen/oxygen_pcm.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/oxygen/oxygen_pcm.c?id=c26819900036f5b91608051a0fc7c76f6b4ffc7b'>c26819900036f5b91608051a0fc7c76f6b4ffc7b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/oxygen/oxygen_pcm.c?id=0b529f143e8baad441a5aac9ad55ec2434d8fb46&amp;id2=c26819900036f5b91608051a0fc7c76f6b4ffc7b'>diff</a>)</td></tr></table>
<div class='commit-subject'>crypto: algif_aead - Fix kernel panic on list_del</div><div class='commit-msg'>Kernel panics when userspace program try to access AEAD interface.
Remove node from Linked List before freeing its memory.

Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Harsh Jain &lt;harsh@chelsio.com&gt;
Reviewed-by: Stephan Müller &lt;smueller@chronox.de&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>Diffstat</a> (limited to 'sound/pci/oxygen/oxygen_pcm.c')</div><table summary='diffstat' class='diffstat'>