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, 335 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_sdlb.c b/drivers/net/ethernet/microchip/sparx5/sparx5_sdlb.c
new file mode 100644
index 000000000..f5267218c
--- /dev/null
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_sdlb.c
@@ -0,0 +1,335 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Microchip Sparx5 Switch driver
+ *
+ * Copyright (c) 2023 Microchip Technology Inc. and its subsidiaries.
+ */
+
+#include "sparx5_main_regs.h"
+#include "sparx5_main.h"
+
+struct sparx5_sdlb_group sdlb_groups[SPX5_SDLB_GROUP_CNT] = {
+	{ SPX5_SDLB_GROUP_RATE_MAX,    8192 / 1, 64 }, /*  25 G */
+	{ 15000000000ULL,              8192 / 1, 64 }, /*  15 G */
+	{ 10000000000ULL,              8192 / 1, 64 }, /*  10 G */
+	{  5000000000ULL,              8192 / 1, 64 }, /*   5 G */
+	{  2500000000ULL,              8192 / 1, 64 }, /* 2.5 G */
+	{  1000000000ULL,              8192 / 2, 64 }, /*   1 G */
+	{   500000000ULL,              8192 / 2, 64 }, /* 500 M */
+	{   100000000ULL,              8192 / 4, 64 }, /* 100 M */
+	{    50000000ULL,              8192 / 4, 64 }, /*  50 M */
+	{     5000000ULL,              8192 / 8, 64 }  /*   5 M */
+};
+
+int sparx5_sdlb_clk_hz_get(struct sparx5 *sparx5)
+{
+	u32 clk_per_100ps;
+	u64 clk_hz;
+
+	clk_per_100ps = HSCH_SYS_CLK_PER_100PS_GET(spx5_rd(sparx5,
+							   HSCH_SYS_CLK_PER));
+	if (!clk_per_100ps)
+		clk_per_100ps = SPX5_CLK_PER_100PS_DEFAULT;
+
+	clk_hz = (10 * 1000 * 1000) / clk_per_100ps;
+	return clk_hz *= 1000;
+}
+
+static int sparx5_sdlb_pup_interval_get(struct sparx5 *sparx5, u32 max_token,
+					u64 max_rate)
+{
+	u64 clk_hz;
+
+	clk_hz = sparx5_sdlb_clk_hz_get(sparx5);
+
+	return div64_u64((8 * clk_hz * max_token), max_rate);
+}
+
+int sparx5_sdlb_pup_token_get(struct sparx5 *sparx5, u32 pup_interval, u64 rate)
+{
+	u64 clk_hz;
+
+	if (!rate)
+		return SPX5_SDLB_PUP_TOKEN_DISABLE;
+
+	clk_hz = sparx5_sdlb_clk_hz_get(sparx5);
+
+	return DIV64_U64_ROUND_UP((rate * pup_interval), (clk_hz * 8));
+}
+
+static void sparx5_sdlb_group_disable(struct sparx5 *sparx5, u32 group)
+{
+	spx5_rmw(ANA_AC_SDLB_PUP_CTRL_PUP_ENA_SET(0),
+		 ANA_AC_SDLB_PUP_CTRL_PUP_ENA, sparx5,
+		 ANA_AC_SDLB_PUP_CTRL(group));
+}
+
+static void sparx5_sdlb_group_enable(struct sparx5 *sparx5, u32 group)
+{
+	spx5_rmw(ANA_AC_SDLB_PUP_CTRL_PUP_ENA_SET(1),
+		 ANA_AC_SDLB_PUP_CTRL_PUP_ENA, sparx5,
+		 ANA_AC_SDLB_PUP_CTRL(group));
+}
+
+static u32 sparx5_sdlb_group_get_first(struct sparx5 *sparx5, u32 group)
+{
+	u32 val;
+
+	val = spx5_rd(sparx5, ANA_AC_SDLB_XLB_START(group));
+
+	return ANA_AC_SDLB_XLB_START_LBSET_START_GET(val);
+}
+
+static u32 sparx5_sdlb_group_get_next(struct sparx5 *sparx5, u32 group,
+				      u32 lb)
+{
+	u32 val;
+
+	val = spx5_rd(sparx5, ANA_AC_SDLB_XLB_NEXT(lb));
+
+	return ANA_AC_SDLB_XLB_NEXT_LBSET_NEXT_GET(val);
+}
+
+static bool sparx5_sdlb_group_is_first(struct sparx5 *sparx5, u32 group,
+				       u32 lb)
+{
+	return lb == sparx5_sdlb_group_get_first(sparx5, group);
+}
+
+static bool sparx5_sdlb_group_is_last(struct sparx5 *sparx5, u32 group,
+				      u32 lb)
+{
+	return lb == sparx5_sdlb_group_get_next(sparx5, group, lb);
+}
+
+static bool sparx5_sdlb_group_is_empty(struct sparx5 *sparx5, u32 group)
+{
+	u32 val;
+
+	val = spx5_rd(sparx5, ANA_AC_SDLB_PUP_CTRL(group));
+
+	return ANA_AC_SDLB_PUP_CTRL_PUP_ENA_GET(val) == 0;
+}
+
+static u32 sparx5_sdlb_group_get_last(struct sparx5 *sparx5, u32 group)
+{
+	u32 itr, next;
+
+	itr = sparx5_sdlb_group_get_first(sparx5, group);
+
+	for (;;) {
+		next = sparx5_sdlb_group_get_next(sparx5, group, itr);
+		if (itr == next)
+			return itr;
+
+		itr = next;
+	}
+}
+
+static bool sparx5_sdlb_group_is_singular(struct sparx5 *sparx5, u32 group)
+{
+	if (sparx5_sdlb_group_is_empty(sparx5, group))
+		return false;
+
+	return sparx5_sdlb_group_get_first(sparx5, group) ==
+	       sparx5_sdlb_group_get_last(sparx5, group);
+}
+
+static int sparx5_sdlb_group_get_adjacent(struct sparx5 *sparx5, u32 group,
+					  u32 idx, u32 *prev, u32 *next,
+					  u32 *first)
+{
+	u32 itr;
+
+	*first = sparx5_sdlb_group_get_first(sparx5, group);
+	*prev = *first;
+	*next = *first;
+	itr = *first;
+
+	for (;;) {
+		*next = sparx5_sdlb_group_get_next(sparx5, group, itr);
+
+		if (itr == idx)
+			return 0; /* Found it */
+
+		if (itr == *next)
+			return -EINVAL; /* Was not found */
+
+		*prev = itr;
+		itr = *next;
+	}
+}
+
+static int sparx5_sdlb_group_get_count(struct sparx5 *sparx5, u32 group)
+{
+	u32 itr, next;
+	int count = 0;
+
+	itr = sparx5_sdlb_group_get_first(sparx5, group);
+
+	for (;;) {
+		next = sparx5_sdlb_group_get_next(sparx5, group, itr);
+		if (itr == next)
+			return count;
+
+		itr = next;
+		count++;
+	}
+}
+
+int sparx5_sdlb_group_get_by_rate(struct sparx5 *sparx5, u32 rate, u32 burst)
+{
+	const struct sparx5_sdlb_group *group;
+	u64 rate_bps;
+	int i, count;
+
+	rate_bps = rate * 1000;
+
+	for (i = SPX5_SDLB_GROUP_CNT - 1; i >= 0; i--) {
+		group = &sdlb_groups[i];
+
+		count = sparx5_sdlb_group_get_count(sparx5, i);
+
+		/* Check that this group is not full.
+		 * According to LB group configuration rules: the number of XLBs
+		 * in a group must not exceed PUP_INTERVAL/4 - 1.
+		 */
+		if (count > ((group->pup_interval / 4) - 1))
+			continue;
+
+		if (rate_bps < group->max_rate)
+			return i;
+	}
+
+	return -ENOSPC;
+}
+
+int sparx5_sdlb_group_get_by_index(struct sparx5 *sparx5, u32 idx, u32 *group)
+{
+	u32 itr, next;
+	int i;
+
+	for (i = 0; i < SPX5_SDLB_GROUP_CNT; i++) {
+		if (sparx5_sdlb_group_is_empty(sparx5, i))
+			continue;
+
+		itr = sparx5_sdlb_group_get_first(sparx5, i);
+
+		for (;;) {
+			next = sparx5_sdlb_group_get_next(sparx5, i, itr);
+
+			if (itr == idx) {
+				*group = i;
+				return 0; /* Found it */
+			}
+			if (itr == next)
+				break; /* Was not found */
+
+			itr = next;
+		}
+	}
+
+	return -EINVAL;
+}
+
+static int sparx5_sdlb_group_link(struct sparx5 *sparx5, u32 group, u32 idx,
+				  u32 first, u32 next, bool empty)
+{
+	/* Stop leaking */
+	sparx5_sdlb_group_disable(sparx5, group);
+
+	if (empty)
+		return 0;
+
+	/* Link insertion lb to next lb */
+	spx5_wr(ANA_AC_SDLB_XLB_NEXT_LBSET_NEXT_SET(next) |
+			ANA_AC_SDLB_XLB_NEXT_LBGRP_SET(group),
+		sparx5, ANA_AC_SDLB_XLB_NEXT(idx));
+
+	/* Set the first lb */
+	spx5_wr(ANA_AC_SDLB_XLB_START_LBSET_START_SET(first), sparx5,
+		ANA_AC_SDLB_XLB_START(group));
+
+	/* Start leaking */
+	sparx5_sdlb_group_enable(sparx5, group);
+
+	return 0;
+};
+
+int sparx5_sdlb_group_add(struct sparx5 *sparx5, u32 group, u32 idx)
+{
+	u32 first, next;
+
+	/* We always add to head of the list */
+	first = idx;
+
+	if (sparx5_sdlb_group_is_empty(sparx5, group))
+		next = idx;
+	else
+		next = sparx5_sdlb_group_get_first(sparx5, group);
+
+	return sparx5_sdlb_group_link(sparx5, group, idx, first, next, false);
+}
+
+int sparx5_sdlb_group_del(struct sparx5 *sparx5, u32 group, u32 idx)
+{
+	u32 first, next, prev;
+	bool empty = false;
+
+	if (sparx5_sdlb_group_get_adjacent(sparx5, group, idx, &prev, &next,
+					   &first) < 0) {
+		pr_err("%s:%d Could not find idx: %d in group: %d", __func__,
+		       __LINE__, idx, group);
+		return -EINVAL;
+	}
+
+	if (sparx5_sdlb_group_is_singular(sparx5, group)) {
+		empty = true;
+	} else if (sparx5_sdlb_group_is_last(sparx5, group, idx)) {
+		/* idx is removed, prev is now last */
+		idx = prev;
+		next = prev;
+	} else if (sparx5_sdlb_group_is_first(sparx5, group, idx)) {
+		/* idx is removed and points to itself, first is next */
+		first = next;
+		next = idx;
+	} else {
+		/* Next is not touched */
+		idx = prev;
+	}
+
+	return sparx5_sdlb_group_link(sparx5, group, idx, first, next, empty);
+}
+
+void sparx5_sdlb_group_init(struct sparx5 *sparx5, u64 max_rate, u32 min_burst,
+			    u32 frame_size, u32 idx)
+{
+	u32 thres_shift, mask = 0x01, power = 0;
+	struct sparx5_sdlb_group *group;
+	u64 max_token;
+
+	group = &sdlb_groups[idx];
+
+	/* Number of positions to right-shift LB's threshold value. */
+	while ((min_burst & mask) == 0) {
+		power++;
+		mask <<= 1;
+	}
+	thres_shift = SPX5_SDLB_2CYCLES_TYPE2_THRES_OFFSET - power;
+
+	max_token = (min_burst > SPX5_SDLB_PUP_TOKEN_MAX) ?
+			    SPX5_SDLB_PUP_TOKEN_MAX :
+			    min_burst;
+	group->pup_interval =
+		sparx5_sdlb_pup_interval_get(sparx5, max_token, max_rate);
+
+	group->frame_size = frame_size;
+
+	spx5_wr(ANA_AC_SDLB_PUP_INTERVAL_PUP_INTERVAL_SET(group->pup_interval),
+		sparx5, ANA_AC_SDLB_PUP_INTERVAL(idx));
+
+	spx5_wr(ANA_AC_SDLB_FRM_RATE_TOKENS_FRM_RATE_TOKENS_SET(frame_size),
+		sparx5, ANA_AC_SDLB_FRM_RATE_TOKENS(idx));
+
+	spx5_wr(ANA_AC_SDLB_LBGRP_MISC_THRES_SHIFT_SET(thres_shift), sparx5,
+		ANA_AC_SDLB_LBGRP_MISC(idx));
+}