/*
 * Copyright (c) 2007-2012 Nicira, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 */

#include <linux/netdevice.h>
#include <net/genetlink.h>
#include <net/netns/generic.h>

#include "datapath.h"
#include "vport-internal_dev.h"
#include "vport-netdev.h"

static void dp_detach_port_notify(struct vport *vport)
{
	struct sk_buff *notify;
	struct datapath *dp;

	dp = vport->dp;
	notify = ovs_vport_cmd_build_info(vport, 0, 0,
					  OVS_VPORT_CMD_DEL);
	ovs_dp_detach_port(vport);
	if (IS_ERR(notify)) {
		genl_set_err(&dp_vport_genl_family, ovs_dp_get_net(dp), 0,
			     0, PTR_ERR(notify));
		return;
	}

	genlmsg_multicast_netns(&dp_vport_genl_family,
				ovs_dp_get_net(dp), notify, 0,
				0, GFP_KERNEL);
}

void ovs_dp_notify_wq(struct work_struct *work)
{
	struct ovs_net *ovs_net = container_of(work, struct ovs_net, dp_notify_work);
	struct datapath *dp;

	ovs_lock();
	list_for_each_entry(dp, &ovs_net->dps, list_node) {
		int i;

		for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) {
			struct vport *vport;
			struct hlist_node *n;

			hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) {
				if (vport->ops->type == OVS_VPORT_TYPE_INTERNAL)
					continue;

				if (!(vport->dev->priv_flags & IFF_OVS_DATAPATH))
					dp_detach_port_notify(vport);
			}
		}
	}
	ovs_unlock();
}

static int dp_device_event(struct notifier_block *unused, unsigned long event,
			   void *ptr)
{
	struct ovs_net *ovs_net;
	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
	struct vport *vport = NULL;

	if (!ovs_is_internal_dev(dev))
		vport = ovs_netdev_get_vport(dev);

	if (!vport)
		return NOTIFY_DONE;

	if (event == NETDEV_UNREGISTER) {
		/* upper_dev_unlink and decrement promisc immediately */
		ovs_netdev_detach_dev(vport);

		/* schedule vport destroy, dev_put and genl notification */
		ovs_net = net_generic(dev_net(dev), ovs_net_id);
		queue_work(system_wq, &ovs_net->dp_notify_work);
	}

	return NOTIFY_DONE;
}

struct notifier_block ovs_dp_device_notifier = {
	.notifier_call = dp_device_event
};
ange</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/log/?h=nds-private-remove&amp;id=5add6e4a222f2eb437992af6b39c8a9c9a28604a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=5add6e4a222f2eb437992af6b39c8a9c9a28604a'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/6lowpan?h=nds-private-remove&amp;id=5add6e4a222f2eb437992af6b39c8a9c9a28604a'>6lowpan</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/6lowpan/Makefile?h=nds-private-remove&amp;id=5add6e4a222f2eb437992af6b39c8a9c9a28604a'>Makefile</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/net/6lowpan/Makefile?h=nds-private-remove&amp;id=5add6e4a222f2eb437992af6b39c8a9c9a28604a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
 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>Benjamin Herrenschmidt &lt;benh@kernel.crashing.org&gt;</td><td class='right'>2017-02-03 17:10:28 +1100</td></tr>
<tr><th>committer</th><td>Michael Ellerman &lt;mpe@ellerman.id.au&gt;</td><td class='right'>2017-02-08 23:36:29 +1100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/netfilter/xt_addrtype.c?h=nds-private-remove&amp;id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>d7df2443cd5f67fc6ee7c05a88e4996e8177f91b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/netfilter/xt_addrtype.c?id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>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=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>098a7c0ca4fceb8a65cb1f693c9d71990388933d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/netfilter/xt_addrtype.c?h=nds-private-remove&amp;id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>net/netfilter/xt_addrtype.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/netfilter/xt_addrtype.c?h=nds-private-remove&amp;id=a0615a16f7d0ceb5804d295203c302d496d8ee91'>a0615a16f7d0ceb5804d295203c302d496d8ee91</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/netfilter/xt_addrtype.c?h=nds-private-remove&amp;id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b&amp;id2=a0615a16f7d0ceb5804d295203c302d496d8ee91'>diff</a>)</td></tr></table>
<div class='commit-subject'>powerpc/mm: Fix spurrious segfaults on radix with autonuma</div><div class='commit-msg'>When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it
clears all the protection bits but leave the PTE valid.

With the Radix MMU, an attempt at executing from such a PTE will
take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G".

It is thus incorrect to treat all such faults as errors. We should
pass them to handle_mm_fault() for autonuma to deal with. The case
of pages that are really not executable is handled by the existing
test for VM_EXEC further down.

That leaves us with catching the kernel attempts at executing user
pages. We can catch that earlier, even before we do find_vma.

It is never valid on powerpc for the kernel to take an exec fault
to begin with. So fold that test with the existing test for the
kernel faulting on kernel addresses to bail out early.

Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report")
Signed-off-by: Benjamin Herrenschmidt &lt;benh@kernel.crashing.org&gt;
Reviewed-by: Aneesh Kumar K.V &lt;aneesh.kumar@linux.vnet.ibm.com&gt;
Acked-by: Balbir Singh &lt;bsingharora@gmail.com&gt;
Signed-off-by: Michael Ellerman &lt;mpe@ellerman.id.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>Diffstat</a> (limited to 'net/netfilter/xt_addrtype.c')</div><table summary='diffstat' class='diffstat'>