Merge tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - bpf:
        - allow bpf programs calling kernel functions (initially to
          reuse TCP congestion control implementations)
        - enable task local storage for tracing programs - remove the
          need to store per-task state in hash maps, and allow tracing
          programs access to task local storage previously added for
          BPF_LSM
        - add bpf_for_each_map_elem() helper, allowing programs to walk
          all map elements in a more robust and easier to verify fashion
        - sockmap: support UDP and cross-protocol BPF_SK_SKB_VERDICT
          redirection
        - lpm: add support for batched ops in LPM trie
        - add BTF_KIND_FLOAT support - mostly to allow use of BTF on
          s390 which has floats in its headers files
        - improve BPF syscall documentation and extend the use of kdoc
          parsing scripts we already employ for bpf-helpers
        - libbpf, bpftool: support static linking of BPF ELF files
        - improve support for encapsulation of L2 packets

   - xdp: restructure redirect actions to avoid a runtime lookup,
     improving performance by 4-8% in microbenchmarks

   - xsk: build skb by page (aka generic zerocopy xmit) - improve
     performance of software AF_XDP path by 33% for devices which don't
     need headers in the linear skb part (e.g. virtio)

   - nexthop: resilient next-hop groups - improve path stability on
     next-hops group changes (incl. offload for mlxsw)

   - ipv6: segment routing: add support for IPv4 decapsulation

   - icmp: add support for RFC 8335 extended PROBE messages

   - inet: use bigger hash table for IP ID generation

   - tcp: deal better with delayed TX completions - make sure we don't
     give up on fast TCP retransmissions only because driver is slow in
     reporting that it completed transmitting the original

   - tcp: reorder tcp_congestion_ops for better cache locality

   - mptcp:
        - add sockopt support for common TCP options
        - add support for common TCP msg flags
        - include multiple address ids in RM_ADDR
        - add reset option support for resetting one subflow

   - udp: GRO L4 improvements - improve 'forward' / 'frag_list'
     co-existence with UDP tunnel GRO, allowing the first to take place
     correctly even for encapsulated UDP traffic

   - micro-optimize dev_gro_receive() and flow dissection, avoid
     retpoline overhead on VLAN and TEB GRO

   - use less memory for sysctls, add a new sysctl type, to allow using
     u8 instead of "int" and "long" and shrink networking sysctls

   - veth: allow GRO without XDP - this allows aggregating UDP packets
     before handing them off to routing, bridge, OvS, etc.

   - allow specifing ifindex when device is moved to another namespace

   - netfilter:
        - nft_socket: add support for cgroupsv2
        - nftables: add catch-all set element - special element used to
          define a default action in case normal lookup missed
        - use net_generic infra in many modules to avoid allocating
          per-ns memory unnecessarily

   - xps: improve the xps handling to avoid potential out-of-bound
     accesses and use-after-free when XPS change race with other
     re-configuration under traffic

   - add a config knob to turn off per-cpu netdev refcnt to catch
     underflows in testing

  Device APIs:

   - add WWAN subsystem to organize the WWAN interfaces better and
     hopefully start driving towards more unified and vendor-
     independent APIs

   - ethtool:
        - add interface for reading IEEE MIB stats (incl. mlx5 and bnxt
          support)
        - allow network drivers to dump arbitrary SFP EEPROM data,
          current offset+length API was a poor fit for modern SFP which
          define EEPROM in terms of pages (incl. mlx5 support)

   - act_police, flow_offload: add support for packet-per-second
     policing (incl. offload for nfp)

   - psample: add additional metadata attributes like transit delay for
     packets sampled from switch HW (and corresponding egress and
     policy-based sampling in the mlxsw driver)

   - dsa: improve support for sandwiched LAGs with bridge and DSA

   - netfilter:
        - flowtable: use direct xmit in topologies with IP forwarding,
          bridging, vlans etc.
        - nftables: counter hardware offload support

   - Bluetooth:
        - improvements for firmware download w/ Intel devices
        - add support for reading AOSP vendor capabilities
        - add support for virtio transport driver

   - mac80211:
        - allow concurrent monitor iface and ethernet rx decap
        - set priority and queue mapping for injected frames

   - phy: add support for Clause-45 PHY Loopback

   - pci/iov: add sysfs MSI-X vector assignment interface to distribute
     MSI-X resources to VFs (incl. mlx5 support)

  New hardware/drivers:

   - dsa: mv88e6xxx: add support for Marvell mv88e6393x - 11-port
     Ethernet switch with 8x 1-Gigabit Ethernet and 3x 10-Gigabit
     interfaces.

   - dsa: support for legacy Broadcom tags used on BCM5325, BCM5365 and
     BCM63xx switches

   - Microchip KSZ8863 and KSZ8873; 3x 10/100Mbps Ethernet switches

   - ath11k: support for QCN9074 a 802.11ax device

   - Bluetooth: Broadcom BCM4330 and BMC4334

   - phy: Marvell 88X2222 transceiver support

   - mdio: add BCM6368 MDIO mux bus controller

   - r8152: support RTL8153 and RTL8156 (USB Ethernet) chips

   - mana: driver for Microsoft Azure Network Adapter (MANA)

   - Actions Semi Owl Ethernet MAC

   - can: driver for ETAS ES58X CAN/USB interfaces

  Pure driver changes:

   - add XDP support to: enetc, igc, stmmac

   - add AF_XDP support to: stmmac

   - virtio:
        - page_to_skb() use build_skb when there's sufficient tailroom
          (21% improvement for 1000B UDP frames)
        - support XDP even without dedicated Tx queues - share the Tx
          queues with the stack when necessary

   - mlx5:
        - flow rules: add support for mirroring with conntrack, matching
          on ICMP, GTP, flex filters and more
        - support packet sampling with flow offloads
        - persist uplink representor netdev across eswitch mode changes
        - allow coexistence of CQE compression and HW time-stamping
        - add ethtool extended link error state reporting

   - ice, iavf: support flow filters, UDP Segmentation Offload

   - dpaa2-switch:
        - move the driver out of staging
        - add spanning tree (STP) support
        - add rx copybreak support
        - add tc flower hardware offload on ingress traffic

   - ionic:
        - implement Rx page reuse
        - support HW PTP time-stamping

   - octeon: support TC hardware offloads - flower matching on ingress
     and egress ratelimitting.

   - stmmac:
        - add RX frame steering based on VLAN priority in tc flower
        - support frame preemption (FPE)
        - intel: add cross time-stamping freq difference adjustment

   - ocelot:
        - support forwarding of MRP frames in HW
        - support multiple bridges
        - support PTP Sync one-step timestamping

   - dsa: mv88e6xxx, dpaa2-switch: offload bridge port flags like
     learning, flooding etc.

   - ipa: add IPA v4.5, v4.9 and v4.11 support (Qualcomm SDX55, SM8350,
     SC7280 SoCs)

   - mt7601u: enable TDLS support

   - mt76:
        - add support for 802.3 rx frames (mt7915/mt7615)
        - mt7915 flash pre-calibration support
        - mt7921/mt7663 runtime power management fixes"

* tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2451 commits)
  net: selftest: fix build issue if INET is disabled
  net: netrom: nr_in: Remove redundant assignment to ns
  net: tun: Remove redundant assignment to ret
  net: phy: marvell: add downshift support for M88E1240
  net: dsa: ksz: Make reg_mib_cnt a u8 as it never exceeds 255
  net/sched: act_ct: Remove redundant ct get and check
  icmp: standardize naming of RFC 8335 PROBE constants
  bpf, selftests: Update array map tests for per-cpu batched ops
  bpf: Add batched ops support for percpu array
  bpf: Implement formatted output helpers with bstr_printf
  seq_file: Add a seq_bprintf function
  sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues
  net:nfc:digital: Fix a double free in digital_tg_recv_dep_req
  net: fix a concurrency bug in l2tp_tunnel_register()
  net/smc: Remove redundant assignment to rc
  mpls: Remove redundant assignment to err
  llc2: Remove redundant assignment to rc
  net/tls: Remove redundant initialization of record
  rds: Remove redundant assignment to nr_sig
  dt-bindings: net: mdio-gpio: add compatible for microchip,mdio-smi0
  ...

1 files changed, 74 insertions, 1 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
index 0989e2bb6ee3..4e86cdf2bc9f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
@@ -9,6 +9,7 @@
 *******************************************************************************/
 #include "stmmac.h"
 #include "stmmac_ptp.h"
+#include "dwmac4.h"
 
 /**
  * stmmac_adjust_freq
@@ -134,7 +135,10 @@ static int stmmac_enable(struct ptp_clock_info *ptp,
 {
 	struct stmmac_priv *priv =
 	    container_of(ptp, struct stmmac_priv, ptp_clock_ops);
+	void __iomem *ptpaddr = priv->ptpaddr;
+	void __iomem *ioaddr = priv->hw->pcsr;
 	struct stmmac_pps_cfg *cfg;
+	u32 intr_value, acr_value;
 	int ret = -EOPNOTSUPP;
 	unsigned long flags;
 
@@ -158,6 +162,37 @@ static int stmmac_enable(struct ptp_clock_info *ptp,
 					     priv->systime_flags);
 		spin_unlock_irqrestore(&priv->ptp_lock, flags);
 		break;
+	case PTP_CLK_REQ_EXTTS:
+		priv->plat->ext_snapshot_en = on;
+		mutex_lock(&priv->aux_ts_lock);
+		acr_value = readl(ptpaddr + PTP_ACR);
+		acr_value &= ~PTP_ACR_MASK;
+		if (on) {
+			/* Enable External snapshot trigger */
+			acr_value |= priv->plat->ext_snapshot_num;
+			acr_value |= PTP_ACR_ATSFC;
+			netdev_dbg(priv->dev, "Auxiliary Snapshot %d enabled.\n",
+				   priv->plat->ext_snapshot_num >>
+				   PTP_ACR_ATSEN_SHIFT);
+			/* Enable Timestamp Interrupt */
+			intr_value = readl(ioaddr + GMAC_INT_EN);
+			intr_value |= GMAC_INT_TSIE;
+			writel(intr_value, ioaddr + GMAC_INT_EN);
+
+		} else {
+			netdev_dbg(priv->dev, "Auxiliary Snapshot %d disabled.\n",
+				   priv->plat->ext_snapshot_num >>
+				   PTP_ACR_ATSEN_SHIFT);
+			/* Disable Timestamp Interrupt */
+			intr_value = readl(ioaddr + GMAC_INT_EN);
+			intr_value &= ~GMAC_INT_TSIE;
+			writel(intr_value, ioaddr + GMAC_INT_EN);
+		}
+		writel(acr_value, ptpaddr + PTP_ACR);
+		mutex_unlock(&priv->aux_ts_lock);
+		ret = 0;
+		break;
+
 	default:
 		break;
 	}
@@ -165,13 +200,43 @@ static int stmmac_enable(struct ptp_clock_info *ptp,
 	return ret;
 }
 
+/**
+ * stmmac_get_syncdevicetime
+ * @device: current device time
+ * @system: system counter value read synchronously with device time
+ * @ctx: context provided by timekeeping code
+ * Description: Read device and system clock simultaneously and return the
+ * corrected clock values in ns.
+ **/
+static int stmmac_get_syncdevicetime(ktime_t *device,
+				     struct system_counterval_t *system,
+				     void *ctx)
+{
+	struct stmmac_priv *priv = (struct stmmac_priv *)ctx;
+
+	if (priv->plat->crosststamp)
+		return priv->plat->crosststamp(device, system, ctx);
+	else
+		return -EOPNOTSUPP;
+}
+
+static int stmmac_getcrosststamp(struct ptp_clock_info *ptp,
+				 struct system_device_crosststamp *xtstamp)
+{
+	struct stmmac_priv *priv =
+		container_of(ptp, struct stmmac_priv, ptp_clock_ops);
+
+	return get_device_system_crosststamp(stmmac_get_syncdevicetime,
+					     priv, NULL, xtstamp);
+}
+
 /* structure describing a PTP hardware clock */
 static struct ptp_clock_info stmmac_ptp_clock_ops = {
 	.owner = THIS_MODULE,
 	.name = "stmmac ptp",
 	.max_adj = 62500000,
 	.n_alarm = 0,
-	.n_ext_ts = 0,
+	.n_ext_ts = 0, /* will be overwritten in stmmac_ptp_register */
 	.n_per_out = 0, /* will be overwritten in stmmac_ptp_register */
 	.n_pins = 0,
 	.pps = 0,
@@ -180,6 +245,7 @@ static struct ptp_clock_info stmmac_ptp_clock_ops = {
 	.gettime64 = stmmac_get_time,
 	.settime64 = stmmac_set_time,
 	.enable = stmmac_enable,
+	.getcrosststamp = stmmac_getcrosststamp,
 };
 
 /**
@@ -192,6 +258,9 @@ void stmmac_ptp_register(struct stmmac_priv *priv)
 {
 	int i;
 
+	if (priv->plat->ptp_clk_freq_config)
+		priv->plat->ptp_clk_freq_config(priv);
+
 	for (i = 0; i < priv->dma_cap.pps_out_num; i++) {
 		if (i >= STMMAC_PPS_MAX)
 			break;
@@ -202,8 +271,10 @@ void stmmac_ptp_register(struct stmmac_priv *priv)
 		stmmac_ptp_clock_ops.max_adj = priv->plat->ptp_max_adj;
 
 	stmmac_ptp_clock_ops.n_per_out = priv->dma_cap.pps_out_num;
+	stmmac_ptp_clock_ops.n_ext_ts = priv->dma_cap.aux_snapshot_n;
 
 	spin_lock_init(&priv->ptp_lock);
+	mutex_init(&priv->aux_ts_lock);
 	priv->ptp_clock_ops = stmmac_ptp_clock_ops;
 
 	priv->ptp_clock = ptp_clock_register(&priv->ptp_clock_ops,
@@ -229,4 +300,6 @@ void stmmac_ptp_unregister(struct stmmac_priv *priv)
 		pr_debug("Removed PTP HW clock successfully on %s\n",
 			 priv->dev->name);
 	}
+
+	mutex_destroy(&priv->aux_ts_lock);
 }