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, 360 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_tc_flower.c b/drivers/net/ethernet/microchip/lan966x/lan966x_tc_flower.c
new file mode 100644
index 000000000..f960727ec
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_tc_flower.c
@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "lan966x_main.h"
+#include "vcap_api.h"
+#include "vcap_api_client.h"
+#include "vcap_tc.h"
+
+static bool lan966x_tc_is_known_etype(u16 etype)
+{
+	switch (etype) {
+	case ETH_P_ALL:
+	case ETH_P_ARP:
+	case ETH_P_IP:
+	case ETH_P_IPV6:
+		return true;
+	}
+
+	return false;
+}
+
+static int
+lan966x_tc_flower_handler_control_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	struct flow_match_control match;
+	int err = 0;
+
+	flow_rule_match_control(st->frule, &match);
+	if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
+		if (match.key->flags & FLOW_DIS_IS_FRAGMENT)
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_L3_FRAGMENT,
+						    VCAP_BIT_1);
+		else
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_L3_FRAGMENT,
+						    VCAP_BIT_0);
+		if (err)
+			goto out;
+	}
+
+	if (match.mask->flags & FLOW_DIS_FIRST_FRAG) {
+		if (match.key->flags & FLOW_DIS_FIRST_FRAG)
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_L3_FRAG_OFS_GT0,
+						    VCAP_BIT_0);
+		else
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_L3_FRAG_OFS_GT0,
+						    VCAP_BIT_1);
+		if (err)
+			goto out;
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_CONTROL);
+
+	return err;
+
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_frag parse error");
+	return err;
+}
+
+static int
+lan966x_tc_flower_handler_basic_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	struct flow_match_basic match;
+	int err = 0;
+
+	flow_rule_match_basic(st->frule, &match);
+	if (match.mask->n_proto) {
+		st->l3_proto = be16_to_cpu(match.key->n_proto);
+		if (!lan966x_tc_is_known_etype(st->l3_proto)) {
+			err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_ETYPE,
+						    st->l3_proto, ~0);
+			if (err)
+				goto out;
+		} else if (st->l3_proto == ETH_P_IP) {
+			err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_IP4_IS,
+						    VCAP_BIT_1);
+			if (err)
+				goto out;
+		}
+	}
+	if (match.mask->ip_proto) {
+		st->l4_proto = match.key->ip_proto;
+
+		if (st->l4_proto == IPPROTO_TCP) {
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_TCP_IS,
+						    VCAP_BIT_1);
+			if (err)
+				goto out;
+		} else if (st->l4_proto == IPPROTO_UDP) {
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_TCP_IS,
+						    VCAP_BIT_0);
+			if (err)
+				goto out;
+		} else {
+			err = vcap_rule_add_key_u32(st->vrule,
+						    VCAP_KF_L3_IP_PROTO,
+						    st->l4_proto, ~0);
+			if (err)
+				goto out;
+		}
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
+	return err;
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_proto parse error");
+	return err;
+}
+
+static int
+lan966x_tc_flower_handler_vlan_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	return vcap_tc_flower_handler_vlan_usage(st,
+						 VCAP_KF_8021Q_VID_CLS,
+						 VCAP_KF_8021Q_PCP_CLS);
+}
+
+static int
+(*lan966x_tc_flower_handlers_usage[])(struct vcap_tc_flower_parse_usage *st) = {
+	[FLOW_DISSECTOR_KEY_ETH_ADDRS] = vcap_tc_flower_handler_ethaddr_usage,
+	[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = vcap_tc_flower_handler_ipv4_usage,
+	[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = vcap_tc_flower_handler_ipv6_usage,
+	[FLOW_DISSECTOR_KEY_CONTROL] = lan966x_tc_flower_handler_control_usage,
+	[FLOW_DISSECTOR_KEY_PORTS] = vcap_tc_flower_handler_portnum_usage,
+	[FLOW_DISSECTOR_KEY_BASIC] = lan966x_tc_flower_handler_basic_usage,
+	[FLOW_DISSECTOR_KEY_VLAN] = lan966x_tc_flower_handler_vlan_usage,
+	[FLOW_DISSECTOR_KEY_TCP] = vcap_tc_flower_handler_tcp_usage,
+	[FLOW_DISSECTOR_KEY_ARP] = vcap_tc_flower_handler_arp_usage,
+	[FLOW_DISSECTOR_KEY_IP] = vcap_tc_flower_handler_ip_usage,
+};
+
+static int lan966x_tc_flower_use_dissectors(struct flow_cls_offload *f,
+					    struct vcap_admin *admin,
+					    struct vcap_rule *vrule,
+					    u16 *l3_proto)
+{
+	struct vcap_tc_flower_parse_usage state = {
+		.fco = f,
+		.vrule = vrule,
+		.l3_proto = ETH_P_ALL,
+	};
+	int err = 0;
+
+	state.frule = flow_cls_offload_flow_rule(f);
+	for (int i = 0; i < ARRAY_SIZE(lan966x_tc_flower_handlers_usage); ++i) {
+		if (!flow_rule_match_key(state.frule, i) ||
+		    !lan966x_tc_flower_handlers_usage[i])
+			continue;
+
+		err = lan966x_tc_flower_handlers_usage[i](&state);
+		if (err)
+			return err;
+	}
+
+	if (l3_proto)
+		*l3_proto = state.l3_proto;
+
+	return err;
+}
+
+static int lan966x_tc_flower_action_check(struct vcap_control *vctrl,
+					  struct net_device *dev,
+					  struct flow_cls_offload *fco,
+					  bool ingress)
+{
+	struct flow_rule *rule = flow_cls_offload_flow_rule(fco);
+	struct flow_action_entry *actent, *last_actent = NULL;
+	struct flow_action *act = &rule->action;
+	u64 action_mask = 0;
+	int idx;
+
+	if (!flow_action_has_entries(act)) {
+		NL_SET_ERR_MSG_MOD(fco->common.extack, "No actions");
+		return -EINVAL;
+	}
+
+	if (!flow_action_basic_hw_stats_check(act, fco->common.extack))
+		return -EOPNOTSUPP;
+
+	flow_action_for_each(idx, actent, act) {
+		if (action_mask & BIT(actent->id)) {
+			NL_SET_ERR_MSG_MOD(fco->common.extack,
+					   "More actions of the same type");
+			return -EINVAL;
+		}
+		action_mask |= BIT(actent->id);
+		last_actent = actent; /* Save last action for later check */
+	}
+
+	/* Check that last action is a goto
+	 * The last chain/lookup does not need to have goto action
+	 */
+	if (last_actent->id == FLOW_ACTION_GOTO) {
+		/* Check if the destination chain is in one of the VCAPs */
+		if (!vcap_is_next_lookup(vctrl, fco->common.chain_index,
+					 last_actent->chain_index)) {
+			NL_SET_ERR_MSG_MOD(fco->common.extack,
+					   "Invalid goto chain");
+			return -EINVAL;
+		}
+	} else if (!vcap_is_last_chain(vctrl, fco->common.chain_index,
+				       ingress)) {
+		NL_SET_ERR_MSG_MOD(fco->common.extack,
+				   "Last action must be 'goto'");
+		return -EINVAL;
+	}
+
+	/* Catch unsupported combinations of actions */
+	if (action_mask & BIT(FLOW_ACTION_TRAP) &&
+	    action_mask & BIT(FLOW_ACTION_ACCEPT)) {
+		NL_SET_ERR_MSG_MOD(fco->common.extack,
+				   "Cannot combine pass and trap action");
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int lan966x_tc_flower_add(struct lan966x_port *port,
+				 struct flow_cls_offload *f,
+				 struct vcap_admin *admin,
+				 bool ingress)
+{
+	struct flow_action_entry *act;
+	u16 l3_proto = ETH_P_ALL;
+	struct flow_rule *frule;
+	struct vcap_rule *vrule;
+	int err, idx;
+
+	err = lan966x_tc_flower_action_check(port->lan966x->vcap_ctrl,
+					     port->dev, f, ingress);
+	if (err)
+		return err;
+
+	vrule = vcap_alloc_rule(port->lan966x->vcap_ctrl, port->dev,
+				f->common.chain_index, VCAP_USER_TC,
+				f->common.prio, 0);
+	if (IS_ERR(vrule))
+		return PTR_ERR(vrule);
+
+	vrule->cookie = f->cookie;
+	err = lan966x_tc_flower_use_dissectors(f, admin, vrule, &l3_proto);
+	if (err)
+		goto out;
+
+	frule = flow_cls_offload_flow_rule(f);
+
+	flow_action_for_each(idx, act, &frule->action) {
+		switch (act->id) {
+		case FLOW_ACTION_TRAP:
+			err = vcap_rule_add_action_bit(vrule,
+						       VCAP_AF_CPU_COPY_ENA,
+						       VCAP_BIT_1);
+			err |= vcap_rule_add_action_u32(vrule,
+							VCAP_AF_CPU_QUEUE_NUM,
+							0);
+			err |= vcap_rule_add_action_u32(vrule, VCAP_AF_MASK_MODE,
+							LAN966X_PMM_REPLACE);
+			if (err)
+				goto out;
+
+			break;
+		case FLOW_ACTION_GOTO:
+			break;
+		default:
+			NL_SET_ERR_MSG_MOD(f->common.extack,
+					   "Unsupported TC action");
+			err = -EOPNOTSUPP;
+			goto out;
+		}
+	}
+
+	err = vcap_val_rule(vrule, l3_proto);
+	if (err) {
+		vcap_set_tc_exterr(f, vrule);
+		goto out;
+	}
+
+	err = vcap_add_rule(vrule);
+	if (err)
+		NL_SET_ERR_MSG_MOD(f->common.extack,
+				   "Could not add the filter");
+out:
+	vcap_free_rule(vrule);
+	return err;
+}
+
+static int lan966x_tc_flower_del(struct lan966x_port *port,
+				 struct flow_cls_offload *f,
+				 struct vcap_admin *admin)
+{
+	struct vcap_control *vctrl;
+	int err = -ENOENT, rule_id;
+
+	vctrl = port->lan966x->vcap_ctrl;
+	while (true) {
+		rule_id = vcap_lookup_rule_by_cookie(vctrl, f->cookie);
+		if (rule_id <= 0)
+			break;
+
+		err = vcap_del_rule(vctrl, port->dev, rule_id);
+		if (err) {
+			NL_SET_ERR_MSG_MOD(f->common.extack,
+					   "Cannot delete rule");
+			break;
+		}
+	}
+
+	return err;
+}
+
+static int lan966x_tc_flower_stats(struct lan966x_port *port,
+				   struct flow_cls_offload *f,
+				   struct vcap_admin *admin)
+{
+	struct vcap_counter count = {};
+	int err;
+
+	err = vcap_get_rule_count_by_cookie(port->lan966x->vcap_ctrl,
+					    &count, f->cookie);
+	if (err)
+		return err;
+
+	flow_stats_update(&f->stats, 0x0, count.value, 0, 0,
+			  FLOW_ACTION_HW_STATS_IMMEDIATE);
+
+	return err;
+}
+
+int lan966x_tc_flower(struct lan966x_port *port,
+		      struct flow_cls_offload *f,
+		      bool ingress)
+{
+	struct vcap_admin *admin;
+
+	admin = vcap_find_admin(port->lan966x->vcap_ctrl,
+				f->common.chain_index);
+	if (!admin) {
+		NL_SET_ERR_MSG_MOD(f->common.extack, "Invalid chain");
+		return -EINVAL;
+	}
+
+	switch (f->command) {
+	case FLOW_CLS_REPLACE:
+		return lan966x_tc_flower_add(port, f, admin, ingress);
+	case FLOW_CLS_DESTROY:
+		return lan966x_tc_flower_del(port, f, admin);
+	case FLOW_CLS_STATS:
+		return lan966x_tc_flower_stats(port, f, admin);
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}