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

Pull networking changes from David Miller:

1) Allow to dump, monitor, and change the bridge multicast database
   using netlink.  From Cong Wang.

2) RFC 5961 TCP blind data injection attack mitigation, from Eric
   Dumazet.

3) Networking user namespace support from Eric W. Biederman.

4) tuntap/virtio-net multiqueue support by Jason Wang.

5) Support for checksum offload of encapsulated packets (basically,
   tunneled traffic can still be checksummed by HW).  From Joseph
   Gasparakis.

6) Allow BPF filter access to VLAN tags, from Eric Dumazet and
   Daniel Borkmann.

7) Bridge port parameters over netlink and BPDU blocking support
   from Stephen Hemminger.

8) Improve data access patterns during inet socket demux by rearranging
   socket layout, from Eric Dumazet.

9) TIPC protocol updates and cleanups from Ying Xue, Paul Gortmaker, and
   Jon Maloy.

10) Update TCP socket hash sizing to be more in line with current day
    realities.  The existing heurstics were choosen a decade ago.
    From Eric Dumazet.

11) Fix races, queue bloat, and excessive wakeups in ATM and
    associated drivers, from Krzysztof Mazur and David Woodhouse.

12) Support DOVE (Distributed Overlay Virtual Ethernet) extensions
    in VXLAN driver, from David Stevens.

13) Add "oops_only" mode to netconsole, from Amerigo Wang.

14) Support set and query of VEB/VEPA bridge mode via PF_BRIDGE, also
    allow DCB netlink to work on namespaces other than the initial
    namespace.  From John Fastabend.

15) Support PTP in the Tigon3 driver, from Matt Carlson.

16) tun/vhost zero copy fixes and improvements, plus turn it on
    by default, from Michael S. Tsirkin.

17) Support per-association statistics in SCTP, from Michele
    Baldessari.

And many, many, driver updates, cleanups, and improvements.  Too
numerous to mention individually.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
  net/mlx4_en: Add support for destination MAC in steering rules
  net/mlx4_en: Use generic etherdevice.h functions.
  net: ethtool: Add destination MAC address to flow steering API
  bridge: add support of adding and deleting mdb entries
  bridge: notify mdb changes via netlink
  ndisc: Unexport ndisc_{build,send}_skb().
  uapi: add missing netconf.h to export list
  pkt_sched: avoid requeues if possible
  solos-pci: fix double-free of TX skb in DMA mode
  bnx2: Fix accidental reversions.
  bna: Driver Version Updated to 3.1.2.1
  bna: Firmware update
  bna: Add RX State
  bna: Rx Page Based Allocation
  bna: TX Intr Coalescing Fix
  bna: Tx and Rx Optimizations
  bna: Code Cleanup and Enhancements
  ath9k: check pdata variable before dereferencing it
  ath5k: RX timestamp is reported at end of frame
  ath9k_htc: RX timestamp is reported at end of frame
  ...

1 files changed, 201 insertions, 70 deletions

diff --git a/drivers/net/ethernet/adi/bfin_mac.c b/drivers/net/ethernet/adi/bfin_mac.c
index f816426..c1fdb8b 100644
--- a/drivers/net/ethernet/adi/bfin_mac.c
+++ b/drivers/net/ethernet/adi/bfin_mac.c
@@ -548,14 +548,17 @@ static int bfin_mac_ethtool_setwol(struct net_device *dev,
 	return 0;
 }
 
+#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
 static int bfin_mac_ethtool_get_ts_info(struct net_device *dev,
 	struct ethtool_ts_info *info)
 {
+	struct bfin_mac_local *lp = netdev_priv(dev);
+
 	info->so_timestamping =
 		SOF_TIMESTAMPING_TX_HARDWARE |
 		SOF_TIMESTAMPING_RX_HARDWARE |
-		SOF_TIMESTAMPING_SYS_HARDWARE;
-	info->phc_index = -1;
+		SOF_TIMESTAMPING_RAW_HARDWARE;
+	info->phc_index = lp->phc_index;
 	info->tx_types =
 		(1 << HWTSTAMP_TX_OFF) |
 		(1 << HWTSTAMP_TX_ON);
@@ -566,6 +569,7 @@ static int bfin_mac_ethtool_get_ts_info(struct net_device *dev,
 		(1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT);
 	return 0;
 }
+#endif
 
 static const struct ethtool_ops bfin_mac_ethtool_ops = {
 	.get_settings = bfin_mac_ethtool_getsettings,
@@ -574,7 +578,9 @@ static const struct ethtool_ops bfin_mac_ethtool_ops = {
 	.get_drvinfo = bfin_mac_ethtool_getdrvinfo,
 	.get_wol = bfin_mac_ethtool_getwol,
 	.set_wol = bfin_mac_ethtool_setwol,
+#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
 	.get_ts_info = bfin_mac_ethtool_get_ts_info,
+#endif
 };
 
 /**************************************************************************/
@@ -649,6 +655,20 @@ static int bfin_mac_set_mac_address(struct net_device *dev, void *p)
 #ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
 #define bfin_mac_hwtstamp_is_none(cfg) ((cfg) == HWTSTAMP_FILTER_NONE)
 
+static u32 bfin_select_phc_clock(u32 input_clk, unsigned int *shift_result)
+{
+	u32 ipn = 1000000000UL / input_clk;
+	u32 ppn = 1;
+	unsigned int shift = 0;
+
+	while (ppn <= ipn) {
+		ppn <<= 1;
+		shift++;
+	}
+	*shift_result = shift;
+	return 1000000000UL / ppn;
+}
+
 static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
 		struct ifreq *ifr, int cmd)
 {
@@ -798,19 +818,7 @@ static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
 		bfin_read_EMAC_PTP_TXSNAPLO();
 		bfin_read_EMAC_PTP_TXSNAPHI();
 
-		/*
-		 * Set registers so that rollover occurs soon to test this.
-		 */
-		bfin_write_EMAC_PTP_TIMELO(0x00000000);
-		bfin_write_EMAC_PTP_TIMEHI(0xFF800000);
-
 		SSYNC();
-
-		lp->compare.last_update = 0;
-		timecounter_init(&lp->clock,
-				&lp->cycles,
-				ktime_to_ns(ktime_get_real()));
-		timecompare_update(&lp->compare, 0);
 	}
 
 	lp->stamp_cfg = config;
@@ -818,15 +826,6 @@ static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
 		-EFAULT : 0;
 }
 
-static void bfin_dump_hwtamp(char *s, ktime_t *hw, ktime_t *ts, struct timecompare *cmp)
-{
-	ktime_t sys = ktime_get_real();
-
-	pr_debug("%s %s hardware:%d,%d transform system:%d,%d system:%d,%d, cmp:%lld, %lld\n",
-			__func__, s, hw->tv.sec, hw->tv.nsec, ts->tv.sec, ts->tv.nsec, sys.tv.sec,
-			sys.tv.nsec, cmp->offset, cmp->skew);
-}
-
 static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
 {
 	struct bfin_mac_local *lp = netdev_priv(netdev);
@@ -857,15 +856,9 @@ static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
 			regval = bfin_read_EMAC_PTP_TXSNAPLO();
 			regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32;
 			memset(&shhwtstamps, 0, sizeof(shhwtstamps));
-			ns = timecounter_cyc2time(&lp->clock,
-					regval);
-			timecompare_update(&lp->compare, ns);
+			ns = regval << lp->shift;
 			shhwtstamps.hwtstamp = ns_to_ktime(ns);
-			shhwtstamps.syststamp =
-				timecompare_transform(&lp->compare, ns);
 			skb_tstamp_tx(skb, &shhwtstamps);
-
-			bfin_dump_hwtamp("TX", &shhwtstamps.hwtstamp, &shhwtstamps.syststamp, &lp->compare);
 		}
 	}
 }
@@ -888,55 +881,184 @@ static void bfin_rx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
 
 	regval = bfin_read_EMAC_PTP_RXSNAPLO();
 	regval |= (u64)bfin_read_EMAC_PTP_RXSNAPHI() << 32;
-	ns = timecounter_cyc2time(&lp->clock, regval);
-	timecompare_update(&lp->compare, ns);
+	ns = regval << lp->shift;
 	memset(shhwtstamps, 0, sizeof(*shhwtstamps));
 	shhwtstamps->hwtstamp = ns_to_ktime(ns);
-	shhwtstamps->syststamp = timecompare_transform(&lp->compare, ns);
+}
+
+static void bfin_mac_hwtstamp_init(struct net_device *netdev)
+{
+	struct bfin_mac_local *lp = netdev_priv(netdev);
+	u64 addend, ppb;
+	u32 input_clk, phc_clk;
+
+	/* Initialize hardware timer */
+	input_clk = get_sclk();
+	phc_clk = bfin_select_phc_clock(input_clk, &lp->shift);
+	addend = phc_clk * (1ULL << 32);
+	do_div(addend, input_clk);
+	bfin_write_EMAC_PTP_ADDEND((u32)addend);
+
+	lp->addend = addend;
+	ppb = 1000000000ULL * input_clk;
+	do_div(ppb, phc_clk);
+	lp->max_ppb = ppb - 1000000000ULL - 1ULL;
 
-	bfin_dump_hwtamp("RX", &shhwtstamps->hwtstamp, &shhwtstamps->syststamp, &lp->compare);
+	/* Initialize hwstamp config */
+	lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
+	lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF;
 }
 
-/*
- * bfin_read_clock - read raw cycle counter (to be used by time counter)
- */
-static cycle_t bfin_read_clock(const struct cyclecounter *tc)
+static u64 bfin_ptp_time_read(struct bfin_mac_local *lp)
 {
-	u64 stamp;
+	u64 ns;
+	u32 lo, hi;
+
+	lo = bfin_read_EMAC_PTP_TIMELO();
+	hi = bfin_read_EMAC_PTP_TIMEHI();
 
-	stamp =  bfin_read_EMAC_PTP_TIMELO();
-	stamp |= (u64)bfin_read_EMAC_PTP_TIMEHI() << 32ULL;
+	ns = ((u64) hi) << 32;
+	ns |= lo;
+	ns <<= lp->shift;
 
-	return stamp;
+	return ns;
 }
 
-#define PTP_CLK 25000000
+static void bfin_ptp_time_write(struct bfin_mac_local *lp, u64 ns)
+{
+	u32 hi, lo;
 
-static void bfin_mac_hwtstamp_init(struct net_device *netdev)
+	ns >>= lp->shift;
+	hi = ns >> 32;
+	lo = ns & 0xffffffff;
+
+	bfin_write_EMAC_PTP_TIMELO(lo);
+	bfin_write_EMAC_PTP_TIMEHI(hi);
+}
+
+/* PTP Hardware Clock operations */
+
+static int bfin_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
+{
+	u64 adj;
+	u32 diff, addend;
+	int neg_adj = 0;
+	struct bfin_mac_local *lp =
+		container_of(ptp, struct bfin_mac_local, caps);
+
+	if (ppb < 0) {
+		neg_adj = 1;
+		ppb = -ppb;
+	}
+	addend = lp->addend;
+	adj = addend;
+	adj *= ppb;
+	diff = div_u64(adj, 1000000000ULL);
+
+	addend = neg_adj ? addend - diff : addend + diff;
+
+	bfin_write_EMAC_PTP_ADDEND(addend);
+
+	return 0;
+}
+
+static int bfin_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+	s64 now;
+	unsigned long flags;
+	struct bfin_mac_local *lp =
+		container_of(ptp, struct bfin_mac_local, caps);
+
+	spin_lock_irqsave(&lp->phc_lock, flags);
+
+	now = bfin_ptp_time_read(lp);
+	now += delta;
+	bfin_ptp_time_write(lp, now);
+
+	spin_unlock_irqrestore(&lp->phc_lock, flags);
+
+	return 0;
+}
+
+static int bfin_ptp_gettime(struct ptp_clock_info *ptp, struct timespec *ts)
+{
+	u64 ns;
+	u32 remainder;
+	unsigned long flags;
+	struct bfin_mac_local *lp =
+		container_of(ptp, struct bfin_mac_local, caps);
+
+	spin_lock_irqsave(&lp->phc_lock, flags);
+
+	ns = bfin_ptp_time_read(lp);
+
+	spin_unlock_irqrestore(&lp->phc_lock, flags);
+
+	ts->tv_sec = div_u64_rem(ns, 1000000000, &remainder);
+	ts->tv_nsec = remainder;
+	return 0;
+}
+
+static int bfin_ptp_settime(struct ptp_clock_info *ptp,
+			   const struct timespec *ts)
+{
+	u64 ns;
+	unsigned long flags;
+	struct bfin_mac_local *lp =
+		container_of(ptp, struct bfin_mac_local, caps);
+
+	ns = ts->tv_sec * 1000000000ULL;
+	ns += ts->tv_nsec;
+
+	spin_lock_irqsave(&lp->phc_lock, flags);
+
+	bfin_ptp_time_write(lp, ns);
+
+	spin_unlock_irqrestore(&lp->phc_lock, flags);
+
+	return 0;
+}
+
+static int bfin_ptp_enable(struct ptp_clock_info *ptp,
+			  struct ptp_clock_request *rq, int on)
+{
+	return -EOPNOTSUPP;
+}
+
+static struct ptp_clock_info bfin_ptp_caps = {
+	.owner		= THIS_MODULE,
+	.name		= "BF518 clock",
+	.max_adj	= 0,
+	.n_alarm	= 0,
+	.n_ext_ts	= 0,
+	.n_per_out	= 0,
+	.pps		= 0,
+	.adjfreq	= bfin_ptp_adjfreq,
+	.adjtime	= bfin_ptp_adjtime,
+	.gettime	= bfin_ptp_gettime,
+	.settime	= bfin_ptp_settime,
+	.enable		= bfin_ptp_enable,
+};
+
+static int bfin_phc_init(struct net_device *netdev, struct device *dev)
 {
 	struct bfin_mac_local *lp = netdev_priv(netdev);
-	u64 append;
 
-	/* Initialize hardware timer */
-	append = PTP_CLK * (1ULL << 32);
-	do_div(append, get_sclk());
-	bfin_write_EMAC_PTP_ADDEND((u32)append);
-
-	memset(&lp->cycles, 0, sizeof(lp->cycles));
-	lp->cycles.read = bfin_read_clock;
-	lp->cycles.mask = CLOCKSOURCE_MASK(64);
-	lp->cycles.mult = 1000000000 / PTP_CLK;
-	lp->cycles.shift = 0;
-
-	/* Synchronize our NIC clock against system wall clock */
-	memset(&lp->compare, 0, sizeof(lp->compare));
-	lp->compare.source = &lp->clock;
-	lp->compare.target = ktime_get_real;
-	lp->compare.num_samples = 10;
+	lp->caps = bfin_ptp_caps;
+	lp->caps.max_adj = lp->max_ppb;
+	lp->clock = ptp_clock_register(&lp->caps, dev);
+	if (IS_ERR(lp->clock))
+		return PTR_ERR(lp->clock);
 
-	/* Initialize hwstamp config */
-	lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
-	lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF;
+	lp->phc_index = ptp_clock_index(lp->clock);
+	spin_lock_init(&lp->phc_lock);
+
+	return 0;
+}
+
+static void bfin_phc_release(struct bfin_mac_local *lp)
+{
+	ptp_clock_unregister(lp->clock);
 }
 
 #else
@@ -945,6 +1067,8 @@ static void bfin_mac_hwtstamp_init(struct net_device *netdev)
 # define bfin_mac_hwtstamp_ioctl(dev, ifr, cmd) (-EOPNOTSUPP)
 # define bfin_rx_hwtstamp(dev, skb)
 # define bfin_tx_hwtstamp(dev, skb)
+# define bfin_phc_init(netdev, dev) 0
+# define bfin_phc_release(lp)
 #endif
 
 static inline void _tx_reclaim_skb(void)
@@ -1479,7 +1603,7 @@ static const struct net_device_ops bfin_mac_netdev_ops = {
 #endif
 };
 
-static int __devinit bfin_mac_probe(struct platform_device *pdev)
+static int bfin_mac_probe(struct platform_device *pdev)
 {
 	struct net_device *ndev;
 	struct bfin_mac_local *lp;
@@ -1579,12 +1703,17 @@ static int __devinit bfin_mac_probe(struct platform_device *pdev)
 	}
 
 	bfin_mac_hwtstamp_init(ndev);
+	if (bfin_phc_init(ndev, &pdev->dev)) {
+		dev_err(&pdev->dev, "Cannot register PHC device!\n");
+		goto out_err_phc;
+	}
 
 	/* now, print out the card info, in a short format.. */
 	netdev_info(ndev, "%s, Version %s\n", DRV_DESC, DRV_VERSION);
 
 	return 0;
 
+out_err_phc:
 out_err_reg_ndev:
 	free_irq(IRQ_MAC_RX, ndev);
 out_err_request_irq:
@@ -1598,11 +1727,13 @@ out_err_probe_mac:
 	return rc;
 }
 
-static int __devexit bfin_mac_remove(struct platform_device *pdev)
+static int bfin_mac_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct bfin_mac_local *lp = netdev_priv(ndev);
 
+	bfin_phc_release(lp);
+
 	platform_set_drvdata(pdev, NULL);
 
 	lp->mii_bus->priv = NULL;
@@ -1655,7 +1786,7 @@ static int bfin_mac_resume(struct platform_device *pdev)
 #define bfin_mac_resume NULL
 #endif	/* CONFIG_PM */
 
-static int __devinit bfin_mii_bus_probe(struct platform_device *pdev)
+static int bfin_mii_bus_probe(struct platform_device *pdev)
 {
 	struct mii_bus *miibus;
 	struct bfin_mii_bus_platform_data *mii_bus_pd;
@@ -1733,7 +1864,7 @@ out_err_alloc:
 	return rc;
 }
 
-static int __devexit bfin_mii_bus_remove(struct platform_device *pdev)
+static int bfin_mii_bus_remove(struct platform_device *pdev)
 {
 	struct mii_bus *miibus = platform_get_drvdata(pdev);
 	struct bfin_mii_bus_platform_data *mii_bus_pd =
@@ -1750,7 +1881,7 @@ static int __devexit bfin_mii_bus_remove(struct platform_device *pdev)
 
 static struct platform_driver bfin_mii_bus_driver = {
 	.probe = bfin_mii_bus_probe,
-	.remove = __devexit_p(bfin_mii_bus_remove),
+	.remove = bfin_mii_bus_remove,
 	.driver = {
 		.name = "bfin_mii_bus",
 		.owner	= THIS_MODULE,
@@ -1759,7 +1890,7 @@ static struct platform_driver bfin_mii_bus_driver = {
 
 static struct platform_driver bfin_mac_driver = {
 	.probe = bfin_mac_probe,
-	.remove = __devexit_p(bfin_mac_remove),
+	.remove = bfin_mac_remove,
 	.resume = bfin_mac_resume,
 	.suspend = bfin_mac_suspend,
 	.driver = {