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, 346 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_pgt.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_pgt.c
new file mode 100644
index 000000000..7dd3dba0f
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_pgt.c
@@ -0,0 +1,346 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
+
+#include <linux/refcount.h>
+#include <linux/idr.h>
+
+#include "spectrum.h"
+#include "reg.h"
+
+struct mlxsw_sp_pgt {
+	struct idr pgt_idr;
+	u16 end_index; /* Exclusive. */
+	struct mutex lock; /* Protects PGT. */
+	bool smpe_index_valid;
+};
+
+struct mlxsw_sp_pgt_entry {
+	struct list_head ports_list;
+	u16 index;
+	u16 smpe_index;
+};
+
+struct mlxsw_sp_pgt_entry_port {
+	struct list_head list; /* Member of 'ports_list'. */
+	u16 local_port;
+};
+
+int mlxsw_sp_pgt_mid_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_mid)
+{
+	int index, err = 0;
+
+	mutex_lock(&mlxsw_sp->pgt->lock);
+	index = idr_alloc(&mlxsw_sp->pgt->pgt_idr, NULL, 0,
+			  mlxsw_sp->pgt->end_index, GFP_KERNEL);
+
+	if (index < 0) {
+		err = index;
+		goto err_idr_alloc;
+	}
+
+	*p_mid = index;
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+	return 0;
+
+err_idr_alloc:
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+	return err;
+}
+
+void mlxsw_sp_pgt_mid_free(struct mlxsw_sp *mlxsw_sp, u16 mid_base)
+{
+	mutex_lock(&mlxsw_sp->pgt->lock);
+	WARN_ON(idr_remove(&mlxsw_sp->pgt->pgt_idr, mid_base));
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+}
+
+int
+mlxsw_sp_pgt_mid_alloc_range(struct mlxsw_sp *mlxsw_sp, u16 mid_base, u16 count)
+{
+	unsigned int idr_cursor;
+	int i, err;
+
+	mutex_lock(&mlxsw_sp->pgt->lock);
+
+	/* This function is supposed to be called several times as part of
+	 * driver init, in specific order. Verify that the mid_index is the
+	 * first free index in the idr, to be able to free the indexes in case
+	 * of error.
+	 */
+	idr_cursor = idr_get_cursor(&mlxsw_sp->pgt->pgt_idr);
+	if (WARN_ON(idr_cursor != mid_base)) {
+		err = -EINVAL;
+		goto err_idr_cursor;
+	}
+
+	for (i = 0; i < count; i++) {
+		err = idr_alloc_cyclic(&mlxsw_sp->pgt->pgt_idr, NULL,
+				       mid_base, mid_base + count, GFP_KERNEL);
+		if (err < 0)
+			goto err_idr_alloc_cyclic;
+	}
+
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+	return 0;
+
+err_idr_alloc_cyclic:
+	for (i--; i >= 0; i--)
+		idr_remove(&mlxsw_sp->pgt->pgt_idr, mid_base + i);
+err_idr_cursor:
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+	return err;
+}
+
+void
+mlxsw_sp_pgt_mid_free_range(struct mlxsw_sp *mlxsw_sp, u16 mid_base, u16 count)
+{
+	struct idr *pgt_idr = &mlxsw_sp->pgt->pgt_idr;
+	int i;
+
+	mutex_lock(&mlxsw_sp->pgt->lock);
+
+	for (i = 0; i < count; i++)
+		WARN_ON_ONCE(idr_remove(pgt_idr, mid_base + i));
+
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+}
+
+static struct mlxsw_sp_pgt_entry_port *
+mlxsw_sp_pgt_entry_port_lookup(struct mlxsw_sp_pgt_entry *pgt_entry,
+			       u16 local_port)
+{
+	struct mlxsw_sp_pgt_entry_port *pgt_entry_port;
+
+	list_for_each_entry(pgt_entry_port, &pgt_entry->ports_list, list) {
+		if (pgt_entry_port->local_port == local_port)
+			return pgt_entry_port;
+	}
+
+	return NULL;
+}
+
+static struct mlxsw_sp_pgt_entry *
+mlxsw_sp_pgt_entry_create(struct mlxsw_sp_pgt *pgt, u16 mid, u16 smpe)
+{
+	struct mlxsw_sp_pgt_entry *pgt_entry;
+	void *ret;
+	int err;
+
+	pgt_entry = kzalloc(sizeof(*pgt_entry), GFP_KERNEL);
+	if (!pgt_entry)
+		return ERR_PTR(-ENOMEM);
+
+	ret = idr_replace(&pgt->pgt_idr, pgt_entry, mid);
+	if (IS_ERR(ret)) {
+		err = PTR_ERR(ret);
+		goto err_idr_replace;
+	}
+
+	INIT_LIST_HEAD(&pgt_entry->ports_list);
+	pgt_entry->index = mid;
+	pgt_entry->smpe_index = smpe;
+	return pgt_entry;
+
+err_idr_replace:
+	kfree(pgt_entry);
+	return ERR_PTR(err);
+}
+
+static void mlxsw_sp_pgt_entry_destroy(struct mlxsw_sp_pgt *pgt,
+				       struct mlxsw_sp_pgt_entry *pgt_entry)
+{
+	WARN_ON(!list_empty(&pgt_entry->ports_list));
+
+	pgt_entry = idr_replace(&pgt->pgt_idr, NULL, pgt_entry->index);
+	if (WARN_ON(IS_ERR(pgt_entry)))
+		return;
+
+	kfree(pgt_entry);
+}
+
+static struct mlxsw_sp_pgt_entry *
+mlxsw_sp_pgt_entry_get(struct mlxsw_sp_pgt *pgt, u16 mid, u16 smpe)
+{
+	struct mlxsw_sp_pgt_entry *pgt_entry;
+
+	pgt_entry = idr_find(&pgt->pgt_idr, mid);
+	if (pgt_entry)
+		return pgt_entry;
+
+	return mlxsw_sp_pgt_entry_create(pgt, mid, smpe);
+}
+
+static void mlxsw_sp_pgt_entry_put(struct mlxsw_sp_pgt *pgt, u16 mid)
+{
+	struct mlxsw_sp_pgt_entry *pgt_entry;
+
+	pgt_entry = idr_find(&pgt->pgt_idr, mid);
+	if (WARN_ON(!pgt_entry))
+		return;
+
+	if (list_empty(&pgt_entry->ports_list))
+		mlxsw_sp_pgt_entry_destroy(pgt, pgt_entry);
+}
+
+static void mlxsw_sp_pgt_smid2_port_set(char *smid2_pl, u16 local_port,
+					bool member)
+{
+	mlxsw_reg_smid2_port_set(smid2_pl, local_port, member);
+	mlxsw_reg_smid2_port_mask_set(smid2_pl, local_port, 1);
+}
+
+static int
+mlxsw_sp_pgt_entry_port_write(struct mlxsw_sp *mlxsw_sp,
+			      const struct mlxsw_sp_pgt_entry *pgt_entry,
+			      u16 local_port, bool member)
+{
+	char *smid2_pl;
+	int err;
+
+	smid2_pl = kmalloc(MLXSW_REG_SMID2_LEN, GFP_KERNEL);
+	if (!smid2_pl)
+		return -ENOMEM;
+
+	mlxsw_reg_smid2_pack(smid2_pl, pgt_entry->index, 0, 0,
+			     mlxsw_sp->pgt->smpe_index_valid,
+			     pgt_entry->smpe_index);
+
+	mlxsw_sp_pgt_smid2_port_set(smid2_pl, local_port, member);
+	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid2), smid2_pl);
+
+	kfree(smid2_pl);
+
+	return err;
+}
+
+static struct mlxsw_sp_pgt_entry_port *
+mlxsw_sp_pgt_entry_port_create(struct mlxsw_sp *mlxsw_sp,
+			       struct mlxsw_sp_pgt_entry *pgt_entry,
+			       u16 local_port)
+{
+	struct mlxsw_sp_pgt_entry_port *pgt_entry_port;
+	int err;
+
+	pgt_entry_port = kzalloc(sizeof(*pgt_entry_port), GFP_KERNEL);
+	if (!pgt_entry_port)
+		return ERR_PTR(-ENOMEM);
+
+	err = mlxsw_sp_pgt_entry_port_write(mlxsw_sp, pgt_entry, local_port,
+					    true);
+	if (err)
+		goto err_pgt_entry_port_write;
+
+	pgt_entry_port->local_port = local_port;
+	list_add(&pgt_entry_port->list, &pgt_entry->ports_list);
+
+	return pgt_entry_port;
+
+err_pgt_entry_port_write:
+	kfree(pgt_entry_port);
+	return ERR_PTR(err);
+}
+
+static void
+mlxsw_sp_pgt_entry_port_destroy(struct mlxsw_sp *mlxsw_sp,
+				struct mlxsw_sp_pgt_entry *pgt_entry,
+				struct mlxsw_sp_pgt_entry_port *pgt_entry_port)
+
+{
+	list_del(&pgt_entry_port->list);
+	mlxsw_sp_pgt_entry_port_write(mlxsw_sp, pgt_entry,
+				      pgt_entry_port->local_port, false);
+	kfree(pgt_entry_port);
+}
+
+static int mlxsw_sp_pgt_entry_port_add(struct mlxsw_sp *mlxsw_sp, u16 mid,
+				       u16 smpe, u16 local_port)
+{
+	struct mlxsw_sp_pgt_entry_port *pgt_entry_port;
+	struct mlxsw_sp_pgt_entry *pgt_entry;
+	int err;
+
+	mutex_lock(&mlxsw_sp->pgt->lock);
+
+	pgt_entry = mlxsw_sp_pgt_entry_get(mlxsw_sp->pgt, mid, smpe);
+	if (IS_ERR(pgt_entry)) {
+		err = PTR_ERR(pgt_entry);
+		goto err_pgt_entry_get;
+	}
+
+	pgt_entry_port = mlxsw_sp_pgt_entry_port_create(mlxsw_sp, pgt_entry,
+							local_port);
+	if (IS_ERR(pgt_entry_port)) {
+		err = PTR_ERR(pgt_entry_port);
+		goto err_pgt_entry_port_get;
+	}
+
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+	return 0;
+
+err_pgt_entry_port_get:
+	mlxsw_sp_pgt_entry_put(mlxsw_sp->pgt, mid);
+err_pgt_entry_get:
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+	return err;
+}
+
+static void mlxsw_sp_pgt_entry_port_del(struct mlxsw_sp *mlxsw_sp,
+					u16 mid, u16 smpe, u16 local_port)
+{
+	struct mlxsw_sp_pgt_entry_port *pgt_entry_port;
+	struct mlxsw_sp_pgt_entry *pgt_entry;
+
+	mutex_lock(&mlxsw_sp->pgt->lock);
+
+	pgt_entry = idr_find(&mlxsw_sp->pgt->pgt_idr, mid);
+	if (!pgt_entry)
+		goto out;
+
+	pgt_entry_port = mlxsw_sp_pgt_entry_port_lookup(pgt_entry, local_port);
+	if (!pgt_entry_port)
+		goto out;
+
+	mlxsw_sp_pgt_entry_port_destroy(mlxsw_sp, pgt_entry, pgt_entry_port);
+	mlxsw_sp_pgt_entry_put(mlxsw_sp->pgt, mid);
+
+out:
+	mutex_unlock(&mlxsw_sp->pgt->lock);
+}
+
+int mlxsw_sp_pgt_entry_port_set(struct mlxsw_sp *mlxsw_sp, u16 mid,
+				u16 smpe, u16 local_port, bool member)
+{
+	if (member)
+		return mlxsw_sp_pgt_entry_port_add(mlxsw_sp, mid, smpe,
+						   local_port);
+
+	mlxsw_sp_pgt_entry_port_del(mlxsw_sp, mid, smpe, local_port);
+	return 0;
+}
+
+int mlxsw_sp_pgt_init(struct mlxsw_sp *mlxsw_sp)
+{
+	struct mlxsw_sp_pgt *pgt;
+
+	if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, PGT_SIZE))
+		return -EIO;
+
+	pgt = kzalloc(sizeof(*mlxsw_sp->pgt), GFP_KERNEL);
+	if (!pgt)
+		return -ENOMEM;
+
+	idr_init(&pgt->pgt_idr);
+	pgt->end_index = MLXSW_CORE_RES_GET(mlxsw_sp->core, PGT_SIZE);
+	mutex_init(&pgt->lock);
+	pgt->smpe_index_valid = mlxsw_sp->pgt_smpe_index_valid;
+	mlxsw_sp->pgt = pgt;
+	return 0;
+}
+
+void mlxsw_sp_pgt_fini(struct mlxsw_sp *mlxsw_sp)
+{
+	mutex_destroy(&mlxsw_sp->pgt->lock);
+	WARN_ON(!idr_is_empty(&mlxsw_sp->pgt->pgt_idr));
+	idr_destroy(&mlxsw_sp->pgt->pgt_idr);
+	kfree(mlxsw_sp->pgt);
+}