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

Pull networking updates from David Miller:

 1) Add Maglev hashing scheduler to IPVS, from Inju Song.

 2) Lots of new TC subsystem tests from Roman Mashak.

 3) Add TCP zero copy receive and fix delayed acks and autotuning with
    SO_RCVLOWAT, from Eric Dumazet.

 4) Add XDP_REDIRECT support to mlx5 driver, from Jesper Dangaard
    Brouer.

 5) Add ttl inherit support to vxlan, from Hangbin Liu.

 6) Properly separate ipv6 routes into their logically independant
    components. fib6_info for the routing table, and fib6_nh for sets of
    nexthops, which thus can be shared. From David Ahern.

 7) Add bpf_xdp_adjust_tail helper, which can be used to generate ICMP
    messages from XDP programs. From Nikita V. Shirokov.

 8) Lots of long overdue cleanups to the r8169 driver, from Heiner
    Kallweit.

 9) Add BTF ("BPF Type Format"), from Martin KaFai Lau.

10) Add traffic condition monitoring to iwlwifi, from Luca Coelho.

11) Plumb extack down into fib_rules, from Roopa Prabhu.

12) Add Flower classifier offload support to igb, from Vinicius Costa
    Gomes.

13) Add UDP GSO support, from Willem de Bruijn.

14) Add documentation for eBPF helpers, from Quentin Monnet.

15) Add TLS tx offload to mlx5, from Ilya Lesokhin.

16) Allow applications to be given the number of bytes available to read
    on a socket via a control message returned from recvmsg(), from
    Soheil Hassas Yeganeh.

17) Add x86_32 eBPF JIT compiler, from Wang YanQing.

18) Add AF_XDP sockets, with zerocopy support infrastructure as well.
    From Björn Töpel.

19) Remove indirect load support from all of the BPF JITs and handle
    these operations in the verifier by translating them into native BPF
    instead. From Daniel Borkmann.

20) Add GRO support to ipv6 gre tunnels, from Eran Ben Elisha.

21) Allow XDP programs to do lookups in the main kernel routing tables
    for forwarding. From David Ahern.

22) Allow drivers to store hardware state into an ELF section of kernel
    dump vmcore files, and use it in cxgb4. From Rahul Lakkireddy.

23) Various RACK and loss detection improvements in TCP, from Yuchung
    Cheng.

24) Add TCP SACK compression, from Eric Dumazet.

25) Add User Mode Helper support and basic bpfilter infrastructure, from
    Alexei Starovoitov.

26) Support ports and protocol values in RTM_GETROUTE, from Roopa
    Prabhu.

27) Support bulking in ->ndo_xdp_xmit() API, from Jesper Dangaard
    Brouer.

28) Add lots of forwarding selftests, from Petr Machata.

29) Add generic network device failover driver, from Sridhar Samudrala.

* ra.kernel.org:/pub/scm/linux/kernel/git/davem/net-next: (1959 commits)
  strparser: Add __strp_unpause and use it in ktls.
  rxrpc: Fix terminal retransmission connection ID to include the channel
  net: hns3: Optimize PF CMDQ interrupt switching process
  net: hns3: Fix for VF mailbox receiving unknown message
  net: hns3: Fix for VF mailbox cannot receiving PF response
  bnx2x: use the right constant
  Revert "net: sched: cls: Fix offloading when ingress dev is vxlan"
  net: dsa: b53: Fix for brcm tag issue in Cygnus SoC
  enic: fix UDP rss bits
  netdev-FAQ: clarify DaveM's position for stable backports
  rtnetlink: validate attributes in do_setlink()
  mlxsw: Add extack messages for port_{un, }split failures
  netdevsim: Add extack error message for devlink reload
  devlink: Add extack to reload and port_{un, }split operations
  net: metrics: add proper netlink validation
  ipmr: fix error path when ipmr_new_table fails
  ip6mr: only set ip6mr_table from setsockopt when ip6mr_new_table succeeds
  net: hns3: remove unused hclgevf_cfg_func_mta_filter
  netfilter: provide udp*_lib_lookup for nf_tproxy
  qed*: Utilize FW 8.37.2.0
  ...

1 files changed, 454 insertions, 0 deletions

diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c
new file mode 100644
index 000000000000..1468a1642b49
--- /dev/null
+++ b/drivers/ptp/ptp_qoriq.c
@@ -0,0 +1,454 @@
+/*
+ * PTP 1588 clock for Freescale QorIQ 1588 timer
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ *  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.
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/device.h>
+#include <linux/hrtimer.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/timex.h>
+#include <linux/slab.h>
+
+#include <linux/fsl/ptp_qoriq.h>
+
+/*
+ * Register access functions
+ */
+
+/* Caller must hold qoriq_ptp->lock. */
+static u64 tmr_cnt_read(struct qoriq_ptp *qoriq_ptp)
+{
+	u64 ns;
+	u32 lo, hi;
+
+	lo = qoriq_read(&qoriq_ptp->regs->tmr_cnt_l);
+	hi = qoriq_read(&qoriq_ptp->regs->tmr_cnt_h);
+	ns = ((u64) hi) << 32;
+	ns |= lo;
+	return ns;
+}
+
+/* Caller must hold qoriq_ptp->lock. */
+static void tmr_cnt_write(struct qoriq_ptp *qoriq_ptp, u64 ns)
+{
+	u32 hi = ns >> 32;
+	u32 lo = ns & 0xffffffff;
+
+	qoriq_write(&qoriq_ptp->regs->tmr_cnt_l, lo);
+	qoriq_write(&qoriq_ptp->regs->tmr_cnt_h, hi);
+}
+
+/* Caller must hold qoriq_ptp->lock. */
+static void set_alarm(struct qoriq_ptp *qoriq_ptp)
+{
+	u64 ns;
+	u32 lo, hi;
+
+	ns = tmr_cnt_read(qoriq_ptp) + 1500000000ULL;
+	ns = div_u64(ns, 1000000000UL) * 1000000000ULL;
+	ns -= qoriq_ptp->tclk_period;
+	hi = ns >> 32;
+	lo = ns & 0xffffffff;
+	qoriq_write(&qoriq_ptp->regs->tmr_alarm1_l, lo);
+	qoriq_write(&qoriq_ptp->regs->tmr_alarm1_h, hi);
+}
+
+/* Caller must hold qoriq_ptp->lock. */
+static void set_fipers(struct qoriq_ptp *qoriq_ptp)
+{
+	set_alarm(qoriq_ptp);
+	qoriq_write(&qoriq_ptp->regs->tmr_fiper1, qoriq_ptp->tmr_fiper1);
+	qoriq_write(&qoriq_ptp->regs->tmr_fiper2, qoriq_ptp->tmr_fiper2);
+}
+
+/*
+ * Interrupt service routine
+ */
+
+static irqreturn_t isr(int irq, void *priv)
+{
+	struct qoriq_ptp *qoriq_ptp = priv;
+	struct ptp_clock_event event;
+	u64 ns;
+	u32 ack = 0, lo, hi, mask, val;
+
+	val = qoriq_read(&qoriq_ptp->regs->tmr_tevent);
+
+	if (val & ETS1) {
+		ack |= ETS1;
+		hi = qoriq_read(&qoriq_ptp->regs->tmr_etts1_h);
+		lo = qoriq_read(&qoriq_ptp->regs->tmr_etts1_l);
+		event.type = PTP_CLOCK_EXTTS;
+		event.index = 0;
+		event.timestamp = ((u64) hi) << 32;
+		event.timestamp |= lo;
+		ptp_clock_event(qoriq_ptp->clock, &event);
+	}
+
+	if (val & ETS2) {
+		ack |= ETS2;
+		hi = qoriq_read(&qoriq_ptp->regs->tmr_etts2_h);
+		lo = qoriq_read(&qoriq_ptp->regs->tmr_etts2_l);
+		event.type = PTP_CLOCK_EXTTS;
+		event.index = 1;
+		event.timestamp = ((u64) hi) << 32;
+		event.timestamp |= lo;
+		ptp_clock_event(qoriq_ptp->clock, &event);
+	}
+
+	if (val & ALM2) {
+		ack |= ALM2;
+		if (qoriq_ptp->alarm_value) {
+			event.type = PTP_CLOCK_ALARM;
+			event.index = 0;
+			event.timestamp = qoriq_ptp->alarm_value;
+			ptp_clock_event(qoriq_ptp->clock, &event);
+		}
+		if (qoriq_ptp->alarm_interval) {
+			ns = qoriq_ptp->alarm_value + qoriq_ptp->alarm_interval;
+			hi = ns >> 32;
+			lo = ns & 0xffffffff;
+			spin_lock(&qoriq_ptp->lock);
+			qoriq_write(&qoriq_ptp->regs->tmr_alarm2_l, lo);
+			qoriq_write(&qoriq_ptp->regs->tmr_alarm2_h, hi);
+			spin_unlock(&qoriq_ptp->lock);
+			qoriq_ptp->alarm_value = ns;
+		} else {
+			qoriq_write(&qoriq_ptp->regs->tmr_tevent, ALM2);
+			spin_lock(&qoriq_ptp->lock);
+			mask = qoriq_read(&qoriq_ptp->regs->tmr_temask);
+			mask &= ~ALM2EN;
+			qoriq_write(&qoriq_ptp->regs->tmr_temask, mask);
+			spin_unlock(&qoriq_ptp->lock);
+			qoriq_ptp->alarm_value = 0;
+			qoriq_ptp->alarm_interval = 0;
+		}
+	}
+
+	if (val & PP1) {
+		ack |= PP1;
+		event.type = PTP_CLOCK_PPS;
+		ptp_clock_event(qoriq_ptp->clock, &event);
+	}
+
+	if (ack) {
+		qoriq_write(&qoriq_ptp->regs->tmr_tevent, ack);
+		return IRQ_HANDLED;
+	} else
+		return IRQ_NONE;
+}
+
+/*
+ * PTP clock operations
+ */
+
+static int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
+{
+	u64 adj, diff;
+	u32 tmr_add;
+	int neg_adj = 0;
+	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
+
+	if (scaled_ppm < 0) {
+		neg_adj = 1;
+		scaled_ppm = -scaled_ppm;
+	}
+	tmr_add = qoriq_ptp->tmr_add;
+	adj = tmr_add;
+
+	/* calculate diff as adj*(scaled_ppm/65536)/1000000
+	 * and round() to the nearest integer
+	 */
+	adj *= scaled_ppm;
+	diff = div_u64(adj, 8000000);
+	diff = (diff >> 13) + ((diff >> 12) & 1);
+
+	tmr_add = neg_adj ? tmr_add - diff : tmr_add + diff;
+
+	qoriq_write(&qoriq_ptp->regs->tmr_add, tmr_add);
+
+	return 0;
+}
+
+static int ptp_qoriq_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+	s64 now;
+	unsigned long flags;
+	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
+
+	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+
+	now = tmr_cnt_read(qoriq_ptp);
+	now += delta;
+	tmr_cnt_write(qoriq_ptp, now);
+	set_fipers(qoriq_ptp);
+
+	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+
+	return 0;
+}
+
+static int ptp_qoriq_gettime(struct ptp_clock_info *ptp,
+			       struct timespec64 *ts)
+{
+	u64 ns;
+	unsigned long flags;
+	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
+
+	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+
+	ns = tmr_cnt_read(qoriq_ptp);
+
+	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+
+	*ts = ns_to_timespec64(ns);
+
+	return 0;
+}
+
+static int ptp_qoriq_settime(struct ptp_clock_info *ptp,
+			       const struct timespec64 *ts)
+{
+	u64 ns;
+	unsigned long flags;
+	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
+
+	ns = timespec64_to_ns(ts);
+
+	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+
+	tmr_cnt_write(qoriq_ptp, ns);
+	set_fipers(qoriq_ptp);
+
+	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+
+	return 0;
+}
+
+static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
+			      struct ptp_clock_request *rq, int on)
+{
+	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
+	unsigned long flags;
+	u32 bit, mask;
+
+	switch (rq->type) {
+	case PTP_CLK_REQ_EXTTS:
+		switch (rq->extts.index) {
+		case 0:
+			bit = ETS1EN;
+			break;
+		case 1:
+			bit = ETS2EN;
+			break;
+		default:
+			return -EINVAL;
+		}
+		spin_lock_irqsave(&qoriq_ptp->lock, flags);
+		mask = qoriq_read(&qoriq_ptp->regs->tmr_temask);
+		if (on)
+			mask |= bit;
+		else
+			mask &= ~bit;
+		qoriq_write(&qoriq_ptp->regs->tmr_temask, mask);
+		spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+		return 0;
+
+	case PTP_CLK_REQ_PPS:
+		spin_lock_irqsave(&qoriq_ptp->lock, flags);
+		mask = qoriq_read(&qoriq_ptp->regs->tmr_temask);
+		if (on)
+			mask |= PP1EN;
+		else
+			mask &= ~PP1EN;
+		qoriq_write(&qoriq_ptp->regs->tmr_temask, mask);
+		spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+		return 0;
+
+	default:
+		break;
+	}
+
+	return -EOPNOTSUPP;
+}
+
+static const struct ptp_clock_info ptp_qoriq_caps = {
+	.owner		= THIS_MODULE,
+	.name		= "qoriq ptp clock",
+	.max_adj	= 512000,
+	.n_alarm	= 0,
+	.n_ext_ts	= N_EXT_TS,
+	.n_per_out	= 0,
+	.n_pins		= 0,
+	.pps		= 1,
+	.adjfine	= ptp_qoriq_adjfine,
+	.adjtime	= ptp_qoriq_adjtime,
+	.gettime64	= ptp_qoriq_gettime,
+	.settime64	= ptp_qoriq_settime,
+	.enable		= ptp_qoriq_enable,
+};
+
+static int qoriq_ptp_probe(struct platform_device *dev)
+{
+	struct device_node *node = dev->dev.of_node;
+	struct qoriq_ptp *qoriq_ptp;
+	struct timespec64 now;
+	int err = -ENOMEM;
+	u32 tmr_ctrl;
+	unsigned long flags;
+
+	qoriq_ptp = kzalloc(sizeof(*qoriq_ptp), GFP_KERNEL);
+	if (!qoriq_ptp)
+		goto no_memory;
+
+	err = -ENODEV;
+
+	qoriq_ptp->caps = ptp_qoriq_caps;
+
+	if (of_property_read_u32(node, "fsl,cksel", &qoriq_ptp->cksel))
+		qoriq_ptp->cksel = DEFAULT_CKSEL;
+
+	if (of_property_read_u32(node,
+				 "fsl,tclk-period", &qoriq_ptp->tclk_period) ||
+	    of_property_read_u32(node,
+				 "fsl,tmr-prsc", &qoriq_ptp->tmr_prsc) ||
+	    of_property_read_u32(node,
+				 "fsl,tmr-add", &qoriq_ptp->tmr_add) ||
+	    of_property_read_u32(node,
+				 "fsl,tmr-fiper1", &qoriq_ptp->tmr_fiper1) ||
+	    of_property_read_u32(node,
+				 "fsl,tmr-fiper2", &qoriq_ptp->tmr_fiper2) ||
+	    of_property_read_u32(node,
+				 "fsl,max-adj", &qoriq_ptp->caps.max_adj)) {
+		pr_err("device tree node missing required elements\n");
+		goto no_node;
+	}
+
+	qoriq_ptp->irq = platform_get_irq(dev, 0);
+
+	if (qoriq_ptp->irq < 0) {
+		pr_err("irq not in device tree\n");
+		goto no_node;
+	}
+	if (request_irq(qoriq_ptp->irq, isr, 0, DRIVER, qoriq_ptp)) {
+		pr_err("request_irq failed\n");
+		goto no_node;
+	}
+
+	qoriq_ptp->rsrc = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	if (!qoriq_ptp->rsrc) {
+		pr_err("no resource\n");
+		goto no_resource;
+	}
+	if (request_resource(&iomem_resource, qoriq_ptp->rsrc)) {
+		pr_err("resource busy\n");
+		goto no_resource;
+	}
+
+	spin_lock_init(&qoriq_ptp->lock);
+
+	qoriq_ptp->regs = ioremap(qoriq_ptp->rsrc->start,
+				resource_size(qoriq_ptp->rsrc));
+	if (!qoriq_ptp->regs) {
+		pr_err("ioremap ptp registers failed\n");
+		goto no_ioremap;
+	}
+	getnstimeofday64(&now);
+	ptp_qoriq_settime(&qoriq_ptp->caps, &now);
+
+	tmr_ctrl =
+	  (qoriq_ptp->tclk_period & TCLK_PERIOD_MASK) << TCLK_PERIOD_SHIFT |
+	  (qoriq_ptp->cksel & CKSEL_MASK) << CKSEL_SHIFT;
+
+	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+
+	qoriq_write(&qoriq_ptp->regs->tmr_ctrl,   tmr_ctrl);
+	qoriq_write(&qoriq_ptp->regs->tmr_add,    qoriq_ptp->tmr_add);
+	qoriq_write(&qoriq_ptp->regs->tmr_prsc,   qoriq_ptp->tmr_prsc);
+	qoriq_write(&qoriq_ptp->regs->tmr_fiper1, qoriq_ptp->tmr_fiper1);
+	qoriq_write(&qoriq_ptp->regs->tmr_fiper2, qoriq_ptp->tmr_fiper2);
+	set_alarm(qoriq_ptp);
+	qoriq_write(&qoriq_ptp->regs->tmr_ctrl,   tmr_ctrl|FIPERST|RTPE|TE|FRD);
+
+	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+
+	qoriq_ptp->clock = ptp_clock_register(&qoriq_ptp->caps, &dev->dev);
+	if (IS_ERR(qoriq_ptp->clock)) {
+		err = PTR_ERR(qoriq_ptp->clock);
+		goto no_clock;
+	}
+	qoriq_ptp->phc_index = ptp_clock_index(qoriq_ptp->clock);
+
+	platform_set_drvdata(dev, qoriq_ptp);
+
+	return 0;
+
+no_clock:
+	iounmap(qoriq_ptp->regs);
+no_ioremap:
+	release_resource(qoriq_ptp->rsrc);
+no_resource:
+	free_irq(qoriq_ptp->irq, qoriq_ptp);
+no_node:
+	kfree(qoriq_ptp);
+no_memory:
+	return err;
+}
+
+static int qoriq_ptp_remove(struct platform_device *dev)
+{
+	struct qoriq_ptp *qoriq_ptp = platform_get_drvdata(dev);
+
+	qoriq_write(&qoriq_ptp->regs->tmr_temask, 0);
+	qoriq_write(&qoriq_ptp->regs->tmr_ctrl,   0);
+
+	ptp_clock_unregister(qoriq_ptp->clock);
+	iounmap(qoriq_ptp->regs);
+	release_resource(qoriq_ptp->rsrc);
+	free_irq(qoriq_ptp->irq, qoriq_ptp);
+	kfree(qoriq_ptp);
+
+	return 0;
+}
+
+static const struct of_device_id match_table[] = {
+	{ .compatible = "fsl,etsec-ptp" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, match_table);
+
+static struct platform_driver qoriq_ptp_driver = {
+	.driver = {
+		.name		= "ptp_qoriq",
+		.of_match_table	= match_table,
+	},
+	.probe       = qoriq_ptp_probe,
+	.remove      = qoriq_ptp_remove,
+};
+
+module_platform_driver(qoriq_ptp_driver);
+
+MODULE_AUTHOR("Richard Cochran <richardcochran@gmail.com>");
+MODULE_DESCRIPTION("PTP clock for Freescale QorIQ 1588 timer");
+MODULE_LICENSE("GPL");