Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Highlights:

   1) Steady transitioning of the BPF instructure to a generic spot so
      all kernel subsystems can make use of it, from Alexei Starovoitov.

   2) SFC driver supports busy polling, from Alexandre Rames.

   3) Take advantage of hash table in UDP multicast delivery, from David
      Held.

   4) Lighten locking, in particular by getting rid of the LRU lists, in
      inet frag handling.  From Florian Westphal.

   5) Add support for various RFC6458 control messages in SCTP, from
      Geir Ola Vaagland.

   6) Allow to filter bridge forwarding database dumps by device, from
      Jamal Hadi Salim.

   7) virtio-net also now supports busy polling, from Jason Wang.

   8) Some low level optimization tweaks in pktgen from Jesper Dangaard
      Brouer.

   9) Add support for ipv6 address generation modes, so that userland
      can have some input into the process.  From Jiri Pirko.

  10) Consolidate common TCP connection request code in ipv4 and ipv6,
      from Octavian Purdila.

  11) New ARP packet logger in netfilter, from Pablo Neira Ayuso.

  12) Generic resizable RCU hash table, with intial users in netlink and
      nftables.  From Thomas Graf.

  13) Maintain a name assignment type so that userspace can see where a
      network device name came from (enumerated by kernel, assigned
      explicitly by userspace, etc.) From Tom Gundersen.

  14) Automatic flow label generation on transmit in ipv6, from Tom
      Herbert.

  15) New packet timestamping facilities from Willem de Bruijn, meant to
      assist in measuring latencies going into/out-of the packet
      scheduler, latency from TCP data transmission to ACK, etc"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1536 commits)
  cxgb4 : Disable recursive mailbox commands when enabling vi
  net: reduce USB network driver config options.
  tg3: Modify tg3_tso_bug() to handle multiple TX rings
  amd-xgbe: Perform phy connect/disconnect at dev open/stop
  amd-xgbe: Use dma_set_mask_and_coherent to set DMA mask
  net: sun4i-emac: fix memory leak on bad packet
  sctp: fix possible seqlock seadlock in sctp_packet_transmit()
  Revert "net: phy: Set the driver when registering an MDIO bus device"
  cxgb4vf: Turn off SGE RX/TX Callback Timers and interrupts in PCI shutdown routine
  team: Simplify return path of team_newlink
  bridge: Update outdated comment on promiscuous mode
  net-timestamp: ACK timestamp for bytestreams
  net-timestamp: TCP timestamping
  net-timestamp: SCHED timestamp on entering packet scheduler
  net-timestamp: add key to disambiguate concurrent datagrams
  net-timestamp: move timestamp flags out of sk_flags
  net-timestamp: extend SCM_TIMESTAMPING ancillary data struct
  cxgb4i : Move stray CPL definitions to cxgb4 driver
  tcp: reduce spurious retransmits due to transient SACK reneging
  qlcnic: Initialize dcbnl_ops before register_netdev
  ...

1 files changed, 285 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-ptp.c b/drivers/net/ethernet/amd/xgbe/xgbe-ptp.c
new file mode 100644
index 000000000000..37e64cfa5718
--- /dev/null
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-ptp.c
@@ -0,0 +1,285 @@
+/*
+ * AMD 10Gb Ethernet driver
+ *
+ * This file is available to you under your choice of the following two
+ * licenses:
+ *
+ * License 1: GPLv2
+ *
+ * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ *
+ * This file is free software; you may copy, redistribute 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.
+ *
+ * This file 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, see <http://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
+ *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
+ *     Inc. unless otherwise expressly agreed to in writing between Synopsys
+ *     and you.
+ *
+ *     The Software IS NOT an item of Licensed Software or Licensed Product
+ *     under any End User Software License Agreement or Agreement for Licensed
+ *     Product with Synopsys or any supplement thereto.  Permission is hereby
+ *     granted, free of charge, to any person obtaining a copy of this software
+ *     annotated with this license and the Software, to deal in the Software
+ *     without restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ *     of the Software, and to permit persons to whom the Software is furnished
+ *     to do so, subject to the following conditions:
+ *
+ *     The above copyright notice and this permission notice shall be included
+ *     in all copies or substantial portions of the Software.
+ *
+ *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
+ *     BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ *     THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *
+ * License 2: Modified BSD
+ *
+ * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Advanced Micro Devices, Inc. nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
+ *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
+ *     Inc. unless otherwise expressly agreed to in writing between Synopsys
+ *     and you.
+ *
+ *     The Software IS NOT an item of Licensed Software or Licensed Product
+ *     under any End User Software License Agreement or Agreement for Licensed
+ *     Product with Synopsys or any supplement thereto.  Permission is hereby
+ *     granted, free of charge, to any person obtaining a copy of this software
+ *     annotated with this license and the Software, to deal in the Software
+ *     without restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ *     of the Software, and to permit persons to whom the Software is furnished
+ *     to do so, subject to the following conditions:
+ *
+ *     The above copyright notice and this permission notice shall be included
+ *     in all copies or substantial portions of the Software.
+ *
+ *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
+ *     BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ *     THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/clk.h>
+#include <linux/clocksource.h>
+#include <linux/ptp_clock_kernel.h>
+#include <linux/net_tstamp.h>
+
+#include "xgbe.h"
+#include "xgbe-common.h"
+
+
+static cycle_t xgbe_cc_read(const struct cyclecounter *cc)
+{
+	struct xgbe_prv_data *pdata = container_of(cc,
+						   struct xgbe_prv_data,
+						   tstamp_cc);
+	u64 nsec;
+
+	nsec = pdata->hw_if.get_tstamp_time(pdata);
+
+	return nsec;
+}
+
+static int xgbe_adjfreq(struct ptp_clock_info *info, s32 delta)
+{
+	struct xgbe_prv_data *pdata = container_of(info,
+						   struct xgbe_prv_data,
+						   ptp_clock_info);
+	unsigned long flags;
+	u64 adjust;
+	u32 addend, diff;
+	unsigned int neg_adjust = 0;
+
+	if (delta < 0) {
+		neg_adjust = 1;
+		delta = -delta;
+	}
+
+	adjust = pdata->tstamp_addend;
+	adjust *= delta;
+	diff = div_u64(adjust, 1000000000UL);
+
+	addend = (neg_adjust) ? pdata->tstamp_addend - diff :
+				pdata->tstamp_addend + diff;
+
+	spin_lock_irqsave(&pdata->tstamp_lock, flags);
+
+	pdata->hw_if.update_tstamp_addend(pdata, addend);
+
+	spin_unlock_irqrestore(&pdata->tstamp_lock, flags);
+
+	return 0;
+}
+
+static int xgbe_adjtime(struct ptp_clock_info *info, s64 delta)
+{
+	struct xgbe_prv_data *pdata = container_of(info,
+						   struct xgbe_prv_data,
+						   ptp_clock_info);
+	unsigned long flags;
+	u64 nsec;
+
+	spin_lock_irqsave(&pdata->tstamp_lock, flags);
+
+	nsec = timecounter_read(&pdata->tstamp_tc);
+
+	nsec += delta;
+	timecounter_init(&pdata->tstamp_tc, &pdata->tstamp_cc, nsec);
+
+	spin_unlock_irqrestore(&pdata->tstamp_lock, flags);
+
+	return 0;
+}
+
+static int xgbe_gettime(struct ptp_clock_info *info, struct timespec *ts)
+{
+	struct xgbe_prv_data *pdata = container_of(info,
+						   struct xgbe_prv_data,
+						   ptp_clock_info);
+	unsigned long flags;
+	u64 nsec;
+
+	spin_lock_irqsave(&pdata->tstamp_lock, flags);
+
+	nsec = timecounter_read(&pdata->tstamp_tc);
+
+	spin_unlock_irqrestore(&pdata->tstamp_lock, flags);
+
+	*ts = ns_to_timespec(nsec);
+
+	return 0;
+}
+
+static int xgbe_settime(struct ptp_clock_info *info, const struct timespec *ts)
+{
+	struct xgbe_prv_data *pdata = container_of(info,
+						   struct xgbe_prv_data,
+						   ptp_clock_info);
+	unsigned long flags;
+	u64 nsec;
+
+	nsec = timespec_to_ns(ts);
+
+	spin_lock_irqsave(&pdata->tstamp_lock, flags);
+
+	timecounter_init(&pdata->tstamp_tc, &pdata->tstamp_cc, nsec);
+
+	spin_unlock_irqrestore(&pdata->tstamp_lock, flags);
+
+	return 0;
+}
+
+static int xgbe_enable(struct ptp_clock_info *info,
+		       struct ptp_clock_request *request, int on)
+{
+	return -EOPNOTSUPP;
+}
+
+void xgbe_ptp_register(struct xgbe_prv_data *pdata)
+{
+	struct ptp_clock_info *info = &pdata->ptp_clock_info;
+	struct ptp_clock *clock;
+	struct cyclecounter *cc = &pdata->tstamp_cc;
+	u64 dividend;
+
+	snprintf(info->name, sizeof(info->name), "%s",
+		 netdev_name(pdata->netdev));
+	info->owner = THIS_MODULE;
+	info->max_adj = clk_get_rate(pdata->ptpclk);
+	info->adjfreq = xgbe_adjfreq;
+	info->adjtime = xgbe_adjtime;
+	info->gettime = xgbe_gettime;
+	info->settime = xgbe_settime;
+	info->enable = xgbe_enable;
+
+	clock = ptp_clock_register(info, pdata->dev);
+	if (IS_ERR(clock)) {
+		dev_err(pdata->dev, "ptp_clock_register failed\n");
+		return;
+	}
+
+	pdata->ptp_clock = clock;
+
+	/* Calculate the addend:
+	 *   addend = 2^32 / (PTP ref clock / 50Mhz)
+	 *          = (2^32 * 50Mhz) / PTP ref clock
+	 */
+	dividend = 50000000;
+	dividend <<= 32;
+	pdata->tstamp_addend = div_u64(dividend, clk_get_rate(pdata->ptpclk));
+
+	/* Setup the timecounter */
+	cc->read = xgbe_cc_read;
+	cc->mask = CLOCKSOURCE_MASK(64);
+	cc->mult = 1;
+	cc->shift = 0;
+
+	timecounter_init(&pdata->tstamp_tc, &pdata->tstamp_cc,
+			 ktime_to_ns(ktime_get_real()));
+
+	/* Disable all timestamping to start */
+	XGMAC_IOWRITE(pdata, MAC_TCR, 0);
+	pdata->tstamp_config.tx_type = HWTSTAMP_TX_OFF;
+	pdata->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
+}
+
+void xgbe_ptp_unregister(struct xgbe_prv_data *pdata)
+{
+	if (pdata->ptp_clock)
+		ptp_clock_unregister(pdata->ptp_clock);
+}