/* 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("");
}
c1c47b'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/psample?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>psample</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3efa70d78f218e4c9276b0bac0545e5184c1c47b'/><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>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-07 16:29:30 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-07 16:29:30 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/psample?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>3efa70d78f218e4c9276b0bac0545e5184c1c47b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/psample?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>f4abe2f05e173023d2a262afd4aebb1e89fe6985</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/psample?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>net/psample</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/psample?id=76e0e70e6452b971a69cc9794ff4a6715c11f7f2'>76e0e70e6452b971a69cc9794ff4a6715c11f7f2</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/psample?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b&amp;id2=76e0e70e6452b971a69cc9794ff4a6715c11f7f2'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/psample?id=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>926af6273fc683cd98cd0ce7bf0d04a02eed6742</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/psample?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b&amp;id2=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</div><div class='commit-msg'>The conflict was an interaction between a bug fix in the
netvsc driver in 'net' and an optimization of the RX path
in 'net-next'.

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=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>Diffstat</a> (limited to 'net/psample')</div><table summary='diffstat' class='diffstat'>