Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 245 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
new file mode 100644
index 000000000..39322e4dd
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
@@ -0,0 +1,245 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell Octeon EP (EndPoint) Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mutex.h>
+#include <linux/jiffies.h>
+#include <linux/sched.h>
+#include <linux/sched/signal.h>
+#include <linux/io.h>
+#include <linux/pci.h>
+#include <linux/etherdevice.h>
+
+#include "octep_ctrl_mbox.h"
+#include "octep_config.h"
+#include "octep_main.h"
+
+/* Timeout in msecs for message response */
+#define OCTEP_CTRL_MBOX_MSG_TIMEOUT_MS			100
+/* Time in msecs to wait for message response */
+#define OCTEP_CTRL_MBOX_MSG_WAIT_MS			10
+
+#define OCTEP_CTRL_MBOX_INFO_MAGIC_NUM_OFFSET(m)	(m)
+#define OCTEP_CTRL_MBOX_INFO_BARMEM_SZ_OFFSET(m)	((m) + 8)
+#define OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(m)	((m) + 24)
+#define OCTEP_CTRL_MBOX_INFO_FW_STATUS_OFFSET(m)	((m) + 144)
+
+#define OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)		((m) + OCTEP_CTRL_MBOX_INFO_SZ)
+#define OCTEP_CTRL_MBOX_H2FQ_PROD_OFFSET(m)		(OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m))
+#define OCTEP_CTRL_MBOX_H2FQ_CONS_OFFSET(m)		((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 4)
+#define OCTEP_CTRL_MBOX_H2FQ_ELEM_SZ_OFFSET(m)		((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 8)
+#define OCTEP_CTRL_MBOX_H2FQ_ELEM_CNT_OFFSET(m)		((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 12)
+
+#define OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)		((m) + \
+							 OCTEP_CTRL_MBOX_INFO_SZ + \
+							 OCTEP_CTRL_MBOX_H2FQ_INFO_SZ)
+#define OCTEP_CTRL_MBOX_F2HQ_PROD_OFFSET(m)		(OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m))
+#define OCTEP_CTRL_MBOX_F2HQ_CONS_OFFSET(m)		((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 4)
+#define OCTEP_CTRL_MBOX_F2HQ_ELEM_SZ_OFFSET(m)		((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 8)
+#define OCTEP_CTRL_MBOX_F2HQ_ELEM_CNT_OFFSET(m)		((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 12)
+
+#define OCTEP_CTRL_MBOX_Q_OFFSET(m, i)			((m) + \
+							 (sizeof(struct octep_ctrl_mbox_msg) * (i)))
+
+static u32 octep_ctrl_mbox_circq_inc(u32 index, u32 mask)
+{
+	return (index + 1) & mask;
+}
+
+static u32 octep_ctrl_mbox_circq_space(u32 pi, u32 ci, u32 mask)
+{
+	return mask - ((pi - ci) & mask);
+}
+
+static u32 octep_ctrl_mbox_circq_depth(u32 pi, u32 ci, u32 mask)
+{
+	return ((pi - ci) & mask);
+}
+
+int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox)
+{
+	u64 magic_num, status;
+
+	if (!mbox)
+		return -EINVAL;
+
+	if (!mbox->barmem) {
+		pr_info("octep_ctrl_mbox : Invalid barmem %p\n", mbox->barmem);
+		return -EINVAL;
+	}
+
+	magic_num = readq(OCTEP_CTRL_MBOX_INFO_MAGIC_NUM_OFFSET(mbox->barmem));
+	if (magic_num != OCTEP_CTRL_MBOX_MAGIC_NUMBER) {
+		pr_info("octep_ctrl_mbox : Invalid magic number %llx\n", magic_num);
+		return -EINVAL;
+	}
+
+	status = readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS_OFFSET(mbox->barmem));
+	if (status != OCTEP_CTRL_MBOX_STATUS_READY) {
+		pr_info("octep_ctrl_mbox : Firmware is not ready.\n");
+		return -EINVAL;
+	}
+
+	mbox->barmem_sz = readl(OCTEP_CTRL_MBOX_INFO_BARMEM_SZ_OFFSET(mbox->barmem));
+
+	writeq(OCTEP_CTRL_MBOX_STATUS_INIT, OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
+
+	mbox->h2fq.elem_cnt = readl(OCTEP_CTRL_MBOX_H2FQ_ELEM_CNT_OFFSET(mbox->barmem));
+	mbox->h2fq.elem_sz = readl(OCTEP_CTRL_MBOX_H2FQ_ELEM_SZ_OFFSET(mbox->barmem));
+	mbox->h2fq.mask = (mbox->h2fq.elem_cnt - 1);
+	mutex_init(&mbox->h2fq_lock);
+
+	mbox->f2hq.elem_cnt = readl(OCTEP_CTRL_MBOX_F2HQ_ELEM_CNT_OFFSET(mbox->barmem));
+	mbox->f2hq.elem_sz = readl(OCTEP_CTRL_MBOX_F2HQ_ELEM_SZ_OFFSET(mbox->barmem));
+	mbox->f2hq.mask = (mbox->f2hq.elem_cnt - 1);
+	mutex_init(&mbox->f2hq_lock);
+
+	mbox->h2fq.hw_prod = OCTEP_CTRL_MBOX_H2FQ_PROD_OFFSET(mbox->barmem);
+	mbox->h2fq.hw_cons = OCTEP_CTRL_MBOX_H2FQ_CONS_OFFSET(mbox->barmem);
+	mbox->h2fq.hw_q = mbox->barmem +
+			  OCTEP_CTRL_MBOX_INFO_SZ +
+			  OCTEP_CTRL_MBOX_H2FQ_INFO_SZ +
+			  OCTEP_CTRL_MBOX_F2HQ_INFO_SZ;
+
+	mbox->f2hq.hw_prod = OCTEP_CTRL_MBOX_F2HQ_PROD_OFFSET(mbox->barmem);
+	mbox->f2hq.hw_cons = OCTEP_CTRL_MBOX_F2HQ_CONS_OFFSET(mbox->barmem);
+	mbox->f2hq.hw_q = mbox->h2fq.hw_q +
+			  ((mbox->h2fq.elem_sz + sizeof(union octep_ctrl_mbox_msg_hdr)) *
+			   mbox->h2fq.elem_cnt);
+
+	/* ensure ready state is seen after everything is initialized */
+	wmb();
+	writeq(OCTEP_CTRL_MBOX_STATUS_READY, OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
+
+	pr_info("Octep ctrl mbox : Init successful.\n");
+
+	return 0;
+}
+
+int octep_ctrl_mbox_send(struct octep_ctrl_mbox *mbox, struct octep_ctrl_mbox_msg *msg)
+{
+	unsigned long timeout = msecs_to_jiffies(OCTEP_CTRL_MBOX_MSG_TIMEOUT_MS);
+	unsigned long period = msecs_to_jiffies(OCTEP_CTRL_MBOX_MSG_WAIT_MS);
+	struct octep_ctrl_mbox_q *q;
+	unsigned long expire;
+	u64 *mbuf, *word0;
+	u8 __iomem *qidx;
+	u16 pi, ci;
+	int i;
+
+	if (!mbox || !msg)
+		return -EINVAL;
+
+	q = &mbox->h2fq;
+	pi = readl(q->hw_prod);
+	ci = readl(q->hw_cons);
+
+	if (!octep_ctrl_mbox_circq_space(pi, ci, q->mask))
+		return -ENOMEM;
+
+	qidx = OCTEP_CTRL_MBOX_Q_OFFSET(q->hw_q, pi);
+	mbuf = (u64 *)msg->msg;
+	word0 = &msg->hdr.word0;
+
+	mutex_lock(&mbox->h2fq_lock);
+	for (i = 1; i <= msg->hdr.sizew; i++)
+		writeq(*mbuf++, (qidx + (i * 8)));
+
+	writeq(*word0, qidx);
+
+	pi = octep_ctrl_mbox_circq_inc(pi, q->mask);
+	writel(pi, q->hw_prod);
+	mutex_unlock(&mbox->h2fq_lock);
+
+	/* don't check for notification response */
+	if (msg->hdr.flags & OCTEP_CTRL_MBOX_MSG_HDR_FLAG_NOTIFY)
+		return 0;
+
+	expire = jiffies + timeout;
+	while (true) {
+		*word0 = readq(qidx);
+		if (msg->hdr.flags == OCTEP_CTRL_MBOX_MSG_HDR_FLAG_RESP)
+			break;
+		schedule_timeout_interruptible(period);
+		if (signal_pending(current) || time_after(jiffies, expire)) {
+			pr_info("octep_ctrl_mbox: Timed out\n");
+			return -EBUSY;
+		}
+	}
+	mbuf = (u64 *)msg->msg;
+	for (i = 1; i <= msg->hdr.sizew; i++)
+		*mbuf++ = readq(qidx + (i * 8));
+
+	return 0;
+}
+
+int octep_ctrl_mbox_recv(struct octep_ctrl_mbox *mbox, struct octep_ctrl_mbox_msg *msg)
+{
+	struct octep_ctrl_mbox_q *q;
+	u32 count, pi, ci;
+	u8 __iomem *qidx;
+	u64 *mbuf;
+	int i;
+
+	if (!mbox || !msg)
+		return -EINVAL;
+
+	q = &mbox->f2hq;
+	pi = readl(q->hw_prod);
+	ci = readl(q->hw_cons);
+	count = octep_ctrl_mbox_circq_depth(pi, ci, q->mask);
+	if (!count)
+		return -EAGAIN;
+
+	qidx = OCTEP_CTRL_MBOX_Q_OFFSET(q->hw_q, ci);
+	mbuf = (u64 *)msg->msg;
+
+	mutex_lock(&mbox->f2hq_lock);
+
+	msg->hdr.word0 = readq(qidx);
+	for (i = 1; i <= msg->hdr.sizew; i++)
+		*mbuf++ = readq(qidx + (i * 8));
+
+	ci = octep_ctrl_mbox_circq_inc(ci, q->mask);
+	writel(ci, q->hw_cons);
+
+	mutex_unlock(&mbox->f2hq_lock);
+
+	if (msg->hdr.flags != OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ || !mbox->process_req)
+		return 0;
+
+	mbox->process_req(mbox->user_ctx, msg);
+	mbuf = (u64 *)msg->msg;
+	for (i = 1; i <= msg->hdr.sizew; i++)
+		writeq(*mbuf++, (qidx + (i * 8)));
+
+	writeq(msg->hdr.word0, qidx);
+
+	return 0;
+}
+
+int octep_ctrl_mbox_uninit(struct octep_ctrl_mbox *mbox)
+{
+	if (!mbox)
+		return -EINVAL;
+
+	writeq(OCTEP_CTRL_MBOX_STATUS_UNINIT,
+	       OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
+	/* ensure uninit state is written before uninitialization */
+	wmb();
+
+	mutex_destroy(&mbox->h2fq_lock);
+	mutex_destroy(&mbox->f2hq_lock);
+
+	writeq(OCTEP_CTRL_MBOX_STATUS_INVALID,
+	       OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
+
+	pr_info("Octep ctrl mbox : Uninit successful.\n");
+
+	return 0;
+}