/*
 * Copyright 2007-2012 Siemens AG
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * 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.
 *
 * Written by:
 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
 * Sergey Lapin <slapin@ossfans.org>
 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
 */

#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/crc-ccitt.h>
#include <asm/unaligned.h>

#include <net/rtnetlink.h>
#include <net/ieee802154_netdev.h>
#include <net/mac802154.h>
#include <net/cfg802154.h>

#include "ieee802154_i.h"
#include "driver-ops.h"

void ieee802154_xmit_worker(struct work_struct *work)
{
	struct ieee802154_local *local =
		container_of(work, struct ieee802154_local, tx_work);
	struct sk_buff *skb = local->tx_skb;
	struct net_device *dev = skb->dev;
	int res;

	res = drv_xmit_sync(local, skb);
	if (res)
		goto err_tx;

	ieee802154_xmit_complete(&local->hw, skb, false);

	dev->stats.tx_packets++;
	dev->stats.tx_bytes += skb->len;

	return;

err_tx:
	/* Restart the netif queue on each sub_if_data object. */
	ieee802154_wake_queue(&local->hw);
	kfree_skb(skb);
	netdev_dbg(dev, "transmission failed\n");
}

static netdev_tx_t
ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb)
{
	struct net_device *dev = skb->dev;
	int ret;

	if (!(local->hw.flags & IEEE802154_HW_TX_OMIT_CKSUM)) {
		u16 crc = crc_ccitt(0, skb->data, skb->len);

		put_unaligned_le16(crc, skb_put(skb, 2));
	}

	/* Stop the netif queue on each sub_if_data object. */
	ieee802154_stop_queue(&local->hw);

	/* async is priority, otherwise sync is fallback */
	if (local->ops->xmit_async) {
		ret = drv_xmit_async(local, skb);
		if (ret) {
			ieee802154_wake_queue(&local->hw);
			goto err_tx;
		}

		dev->stats.tx_packets++;
		dev->stats.tx_bytes += skb->len;
	} else {
		local->tx_skb = skb;
		queue_work(local->workqueue, &local->tx_work);
	}

	return NETDEV_TX_OK;

err_tx:
	kfree_skb(skb);
	return NETDEV_TX_OK;
}

netdev_tx_t
ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);

	skb->skb_iif = dev->ifindex;

	return ieee802154_tx(sdata->local, skb);
}

netdev_tx_t
ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
	int rc;

	/* TODO we should move it to wpan_dev_hard_header and dev_hard_header
	 * functions. The reason is wireshark will show a mac header which is
	 * with security fields but the payload is not encrypted.
	 */
	rc = mac802154_llsec_encrypt(&sdata->sec, skb);
	if (rc) {
		netdev_warn(dev, "encryption failed: %i\n", rc);
		kfree_skb(skb);
		return NETDEV_TX_OK;
	}

	skb->skb_iif = dev->ifindex;

	return ieee802154_tx(sdata->local, skb);
}
ader'><td><span title='2017-02-09 22:59:34 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=cb80d58fae76d8ea93555149b2b16e19b89a1f4f'>openvswitch: Unionize ovs_key_ct_label with a u32 array.</a></td><td>Jarno Rajahalme</td><td>1</td><td><span class='deletions'>-7</span>/<span class='insertions'>+8</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Make the array of labels in struct ovs_key_ct_label an union, adding a
u32 array of the same byte size as the existing u8 array.  It is
faster to loop through the labels 32 bits at the time, which is also
the alignment of netlink attributes.

Signed-off-by: Jarno Rajahalme &lt;jarno@ovn.org&gt;
Acked-by: Joe Stringer &lt;joe@ovn.org&gt;
Acked-by: Pravin B Shelar &lt;pshelar@ovn.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 22:59:34 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=193e30967897f3a8b6f9f137ac30571d832c2c5c'>openvswitch: Do not trigger events for unconfirmed connections.</a></td><td>Jarno Rajahalme</td><td>1</td><td><span class='deletions'>-6</span>/<span class='insertions'>+22</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Receiving change events before the 'new' event for the connection has
been received can be confusing.  Avoid triggering change events for
setting conntrack mark or labels before the conntrack entry has been
confirmed.

Fixes: 182e3042e15d ("openvswitch: Allow matching on conntrack mark")
Fixes: c2ac66735870 ("openvswitch: Allow matching on conntrack label")
Signed-off-by: Jarno Rajahalme &lt;jarno@ovn.org&gt;
Acked-by: Joe Stringer &lt;joe@ovn.org&gt;
Acked-by: Pravin B Shelar &lt;pshelar@ovn.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 22:59:34 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=9ff464db50e437eef131f719cc2e9902eea9c607'>openvswitch: Use inverted tuple in ovs_ct_find_existing() if NATted.</a></td><td>Jarno Rajahalme</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+22</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
The conntrack lookup for existing connections fails to invert the
packet 5-tuple for NATted packets, and therefore fails to find the
existing conntrack entry.  Conntrack only stores 5-tuples for incoming
packets, and there are various situations where a lookup on a packet
that has already been transformed by NAT needs to be made.  Looking up
an existing conntrack entry upon executing packet received from the
userspace is one of them.

This patch fixes ovs_ct_find_existing() to invert the packet 5-tuple
for the conntrack lookup whenever the packet has already been
transformed by conntrack from its input form as evidenced by one of
the NAT flags being set in the conntrack state metadata.

Fixes: 05752523e565 ("openvswitch: Interface with NAT.")
Signed-off-by: Jarno Rajahalme &lt;jarno@ovn.org&gt;
Acked-by: Joe Stringer &lt;joe@ovn.org&gt;
Acked-by: Pravin B Shelar &lt;pshelar@ovn.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 22:59:34 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=5e17da634a21b1200853fe82ba67d6571f2beabe'>openvswitch: Fix comments for skb-&gt;_nfct</a></td><td>Jarno Rajahalme</td><td>1</td><td><span class='deletions'>-7</span>/<span class='insertions'>+7</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Fix comments referring to skb 'nfct' and 'nfctinfo' fields now that
they are combined into '_nfct'.

Signed-off-by: Jarno Rajahalme &lt;jarno@ovn.org&gt;
Acked-by: Pravin B Shelar &lt;pshelar@ovn.org&gt;
Acked-by: Joe Stringer &lt;joe@ovn.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 17:11:09 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=50f008e583d11b3133f23f29b05a0fcac2af3b40'>net: dsa: Fix duplicate object rule</a></td><td>Florian Fainelli</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+0</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
While adding switch.o to the list of DSA object files, we essentially
duplicated the previous obj-y line and just added switch.o, remove the
duplicate.

Fixes: f515f192ab4f ("net: dsa: add switch notifier")
Signed-off-by: Florian Fainelli &lt;f.fainelli@gmail.com&gt;
Reviewed-by: Vivien Didelot &lt;vivien.didelot@savoirfairelinux.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=242bd2d519d7194633e309286ba7ba29a1ad63e8'>sctp: implement sender-side procedures for Add Incoming/Outgoing Streams ↵</a></td><td>Xin Long</td><td>2</td><td><span class='deletions'>-0</span>/<span class='insertions'>+106</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Request Parameter

This patch is to implement Sender-Side Procedures for the Add
Outgoing and Incoming Streams Request Parameter described in
rfc6525 section 5.1.5-5.1.6.

It is also to add sockopt SCTP_ADD_STREAMS in rfc6525 section
6.3.4 for users.

Signed-off-by: Xin Long &lt;lucien.xin@gmail.com&gt;
Acked-by: Marcelo Ricardo Leitner &lt;marcelo.leitner@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=78098117f8bfad4f2104c3f7b6b69071af95a246'>sctp: add support for generating stream reconf add incoming/outgoing streams ↵</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+46</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
request chunk

This patch is to define Add Incoming/Outgoing Streams Request
Parameter described in rfc6525 section 4.5 and 4.6. They can
be in one same chunk trunk as rfc6525 section 3.1-7 describes,
so make them in one function.

Signed-off-by: Xin Long &lt;lucien.xin@gmail.com&gt;
Acked-by: Marcelo Ricardo Leitner &lt;marcelo.leitner@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=a92ce1a42dde1caaee4afae67531e3e7acecf6e4'>sctp: implement sender-side procedures for SSN/TSN Reset Request Parameter</a></td><td>Xin Long</td><td>2</td><td><span class='deletions'>-0</span>/<span class='insertions'>+69</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
This patch is to implement Sender-Side Procedures for the SSN/TSN
Reset Request Parameter descibed in rfc6525 section 5.1.4.

It is also to add sockopt SCTP_RESET_ASSOC in rfc6525 section 6.3.3
for users.

Signed-off-by: Xin Long &lt;lucien.xin@gmail.com&gt;
Acked-by: Marcelo Ricardo Leitner &lt;marcelo.leitner@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=c56480a1e90261842f54f3a5a9ebc12d827f0c3e'>sctp: add support for generating stream reconf ssn/tsn reset request chunk</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+29</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
This patch is to define SSN/TSN Reset Request Parameter described
in rfc6525 section 4.3.

Signed-off-by: Xin Long &lt;lucien.xin@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=119aecbae57e6f10b85b7cd5e070eef006dbcd74'>sctp: streams should be recovered when it fails to send request.</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+17</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Now when sending stream reset request, it closes the streams to
block further xmit of data until this request is completed, then
calls sctp_send_reconf to send the chunk.

But if sctp_send_reconf returns err, and it doesn't recover the
streams' states back,  which means the request chunk would not be
queued and sent, so the asoc will get stuck, streams are closed
and no packet is even queued.

This patch is to fix it by recovering the streams' states when
it fails to send the request, it is also to fix a return value.

Fixes: 7f9d68ac944e ("sctp: implement sender-side procedures for SSN Reset Request Parameter")
Signed-off-by: Xin Long &lt;lucien.xin@gmail.com&gt;
Acked-by: Marcelo Ricardo Leitner &lt;marcelo.leitner@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-08 15:25:18 -0500'>2017-02-08</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=982acb97560c8118c2109504a22b0d78a580547d'>ipv4: fib: Notify about nexthop status changes</a></td><td>Ido Schimmel</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+33</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
When a multipath route is hit the kernel doesn't consider nexthops that
are DEAD or LINKDOWN when IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN is set.
Devices that offload multipath routes need to be made aware of nexthop
status changes. Otherwise, the device will keep forwarding packets to
non-functional nexthops.

Add the FIB_EVENT_NH_{ADD,DEL} events to the fib notification chain,
which notify capable devices when they should add or delete a nexthop
from their tables.

Cc: Roopa Prabhu &lt;roopa@cumulusnetworks.com&gt;
Cc: David Ahern &lt;dsa@cumulusnetworks.com&gt;
Cc: Andy Gospodarek &lt;andy@greyhouse.net&gt;
Signed-off-by: Ido Schimmel &lt;idosch@mellanox.com&gt;
Signed-off-by: Jiri Pirko &lt;jiri@mellanox.com&gt;
Reviewed-by: Andy Gospodarek &lt;gospo@broadcom.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-08 14:39:19 -0500'>2017-02-08</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=8ef9594764617e3fd4500205b080b53c45c14c4b'>bridge: vlan tunnel id info range fill size calc cleanups</a></td><td>Roopa Prabhu</td><td>1</td><td><span class='deletions'>-18</span>/<span class='insertions'>+16</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
This fixes a bug and cleans up tunnelid range size
calculation code by using consistent variable names
and checks in size calculation and fill functions.

tested for a few cases of vlan-vni range mappings:
(output from patched iproute2):
$bridge vlan showtunnel
port     vid        tunid
vxlan0   100-105    1000-1005
         200        2000
         210        2100
         211-213    2100-2102
         214        2104
         216-217    2108-2109
         219        2119

Fixes: efa5356b0d97 ("bridge: per vlan dst_metadata netlink support")
Reported-by: Colin Ian King &lt;colin.king@canonical.com&gt;
Signed-off-by: Roopa Prabhu &lt;roopa@cumulusnetworks.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-08 14:38:18 -0500'>2017-02-08</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=97e219b7c1f75b14b29abe28ad53e8709e8d15e5'>gro_cells: move to net/core/gro_cells.c</a></td><td>Eric Dumazet</td><td>6</td><td><span class='deletions'>-0</span>/<span class='insertions'>+100</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
We have many gro cells users, so lets move the code to avoid
duplication.

This creates a CONFIG_GRO_CELLS option.

Signed-off-by: Eric Dumazet &lt;edumazet@google.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-07 16:29:30 -0500'>2017-02-07</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>David S. Miller