/*
 *      broadcast connection tracking helper
 *
 *      (c) 2005 Patrick McHardy <kaber@trash.net>
 *
 *      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/ip.h>
#include <net/route.h>
#include <linux/inetdevice.h>
#include <linux/skbuff.h>

#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_expect.h>

int nf_conntrack_broadcast_help(struct sk_buff *skb,
				unsigned int protoff,
				struct nf_conn *ct,
				enum ip_conntrack_info ctinfo,
				unsigned int timeout)
{
	struct nf_conntrack_expect *exp;
	struct iphdr *iph = ip_hdr(skb);
	struct rtable *rt = skb_rtable(skb);
	struct in_device *in_dev;
	struct nf_conn_help *help = nfct_help(ct);
	__be32 mask = 0;

	/* we're only interested in locally generated packets */
	if (skb->sk == NULL)
		goto out;
	if (rt == NULL || !(rt->rt_flags & RTCF_BROADCAST))
		goto out;
	if (CTINFO2DIR(ctinfo) != IP_CT_DIR_ORIGINAL)
		goto out;

	rcu_read_lock();
	in_dev = __in_dev_get_rcu(rt->dst.dev);
	if (in_dev != NULL) {
		for_primary_ifa(in_dev) {
			if (ifa->ifa_broadcast == iph->daddr) {
				mask = ifa->ifa_mask;
				break;
			}
		} endfor_ifa(in_dev);
	}
	rcu_read_unlock();

	if (mask == 0)
		goto out;

	exp = nf_ct_expect_alloc(ct);
	if (exp == NULL)
		goto out;

	exp->tuple                = ct->tuplehash[IP_CT_DIR_REPLY].tuple;
	exp->tuple.src.u.udp.port = help->helper->tuple.src.u.udp.port;

	exp->mask.src.u3.ip       = mask;
	exp->mask.src.u.udp.port  = htons(0xFFFF);

	exp->expectfn             = NULL;
	exp->flags                = NF_CT_EXPECT_PERMANENT;
	exp->class		  = NF_CT_EXPECT_CLASS_DEFAULT;
	exp->helper               = NULL;

	nf_ct_expect_related(exp);
	nf_ct_expect_put(exp);

	nf_ct_refresh(ct, skb, timeout * HZ);
out:
	return NF_ACCEPT;
}
EXPORT_SYMBOL_GPL(nf_conntrack_broadcast_help);

MODULE_LICENSE("GPL");
aeec889934'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/sunrpc/xprtmultipath.c?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/sunrpc/xprtmultipath.c'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='b4cfe3971f6eab542dd7ecc398bfa1aeec889934'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>sunrpc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtmultipath.c?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>xprtmultipath.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='b4cfe3971f6eab542dd7ecc398bfa1aeec889934'/><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>Jack Morgenstein &lt;jackm@dev.mellanox.co.il&gt;</td><td class='right'>2017-01-15 20:15:00 +0200</td></tr>
<tr><th>committer</th><td>Doug Ledford &lt;dledford@redhat.com&gt;</td><td class='right'>2017-01-27 14:29:04 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtmultipath.c?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>b4cfe3971f6eab542dd7ecc398bfa1aeec889934</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/sunrpc/xprtmultipath.c?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>c7ad49d05da0535170c8e7710cd44ae1cecc271f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/sunrpc/xprtmultipath.c?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>net/sunrpc/xprtmultipath.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtmultipath.c?h=nds-private-remove&amp;id=2d4b21e0a2913612274a69a3ba1bfee4cffc6e77'>2d4b21e0a2913612274a69a3ba1bfee4cffc6e77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/sunrpc/xprtmultipath.c?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934&amp;id2=2d4b21e0a2913612274a69a3ba1bfee4cffc6e77'>diff</a>)</td></tr></table>
<div class='commit-subject'>RDMA/cma: Fix unknown symbol when CONFIG_IPV6 is not enabled</div><div class='commit-msg'>If IPV6 has not been enabled in the underlying kernel, we must avoid
calling IPV6 procedures in rdma_cm.ko.

This requires using "IS_ENABLED(CONFIG_IPV6)" in "if" statements
surrounding any code which calls external IPV6 procedures.

In the instance fixed here, procedure cma_bind_addr() called
ipv6_addr_type() -- which resulted in calling external procedure
__ipv6_addr_type().

Fixes: 6c26a77124ff ("RDMA/cma: fix IPv6 address resolution")
Cc: &lt;stable@vger.kernel.org&gt; # v4.2+
Cc: Spencer Baugh &lt;sbaugh@catern.com&gt;
Signed-off-by: Jack Morgenstein &lt;jackm@dev.mellanox.co.il&gt;
Reviewed-by: Moni Shoua &lt;monis@mellanox.com&gt;
Signed-off-by: Leon Romanovsky &lt;leon@kernel.org&gt;
Signed-off-by: Doug Ledford &lt;dledford@redhat.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>Diffstat</a> (limited to 'net/sunrpc/xprtmultipath.c')</div><table summary='diffstat' class='diffstat'>