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, 221 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/ef100_rx.c b/drivers/net/ethernet/sfc/ef100_rx.c
new file mode 100644
index 000000000..83d9db71d
--- /dev/null
+++ b/drivers/net/ethernet/sfc/ef100_rx.c
@@ -0,0 +1,221 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2005-2019 Solarflare Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+
+#include "net_driver.h"
+#include "ef100_rx.h"
+#include "rx_common.h"
+#include "efx.h"
+#include "nic_common.h"
+#include "mcdi_functions.h"
+#include "ef100_regs.h"
+#include "ef100_nic.h"
+#include "io.h"
+
+/* Get the value of a field in the RX prefix */
+#define PREFIX_OFFSET_W(_f)	(ESF_GZ_RX_PREFIX_ ## _f ## _LBN / 32)
+#define PREFIX_OFFSET_B(_f)	(ESF_GZ_RX_PREFIX_ ## _f ## _LBN % 32)
+#define PREFIX_WIDTH_MASK(_f)	((1ULL << ESF_GZ_RX_PREFIX_ ## _f ## _WIDTH) - 1)
+#define PREFIX_WORD(_p, _f)	le32_to_cpu((__force __le32)(_p)[PREFIX_OFFSET_W(_f)])
+#define PREFIX_FIELD(_p, _f)	((PREFIX_WORD(_p, _f) >> PREFIX_OFFSET_B(_f)) & \
+				 PREFIX_WIDTH_MASK(_f))
+
+#define ESF_GZ_RX_PREFIX_NT_OR_INNER_L3_CLASS_LBN	\
+		(ESF_GZ_RX_PREFIX_CLASS_LBN + ESF_GZ_RX_PREFIX_HCLASS_NT_OR_INNER_L3_CLASS_LBN)
+#define ESF_GZ_RX_PREFIX_NT_OR_INNER_L3_CLASS_WIDTH	\
+		ESF_GZ_RX_PREFIX_HCLASS_NT_OR_INNER_L3_CLASS_WIDTH
+
+bool ef100_rx_buf_hash_valid(const u8 *prefix)
+{
+	return PREFIX_FIELD(prefix, RSS_HASH_VALID);
+}
+
+static bool ef100_has_fcs_error(struct efx_channel *channel, u32 *prefix)
+{
+	u16 rxclass;
+	u8 l2status;
+
+	rxclass = le16_to_cpu((__force __le16)PREFIX_FIELD(prefix, CLASS));
+	l2status = PREFIX_FIELD(&rxclass, HCLASS_L2_STATUS);
+
+	if (likely(l2status == ESE_GZ_RH_HCLASS_L2_STATUS_OK))
+		/* Everything is ok */
+		return false;
+
+	if (l2status == ESE_GZ_RH_HCLASS_L2_STATUS_FCS_ERR)
+		channel->n_rx_eth_crc_err++;
+	return true;
+}
+
+void __ef100_rx_packet(struct efx_channel *channel)
+{
+	struct efx_rx_queue *rx_queue = efx_channel_get_rx_queue(channel);
+	struct efx_rx_buffer *rx_buf = efx_rx_buffer(rx_queue,
+						     channel->rx_pkt_index);
+	struct efx_nic *efx = channel->efx;
+	struct ef100_nic_data *nic_data;
+	u8 *eh = efx_rx_buf_va(rx_buf);
+	__wsum csum = 0;
+	u16 ing_port;
+	u32 *prefix;
+
+	prefix = (u32 *)(eh - ESE_GZ_RX_PKT_PREFIX_LEN);
+
+	if (channel->type->receive_raw) {
+		u32 mark = PREFIX_FIELD(prefix, USER_MARK);
+
+		if (channel->type->receive_raw(rx_queue, mark))
+			return; /* packet was consumed */
+	}
+
+	if (ef100_has_fcs_error(channel, prefix) &&
+	    unlikely(!(efx->net_dev->features & NETIF_F_RXALL)))
+		goto out;
+
+	rx_buf->len = le16_to_cpu((__force __le16)PREFIX_FIELD(prefix, LENGTH));
+	if (rx_buf->len <= sizeof(struct ethhdr)) {
+		if (net_ratelimit())
+			netif_err(channel->efx, rx_err, channel->efx->net_dev,
+				  "RX packet too small (%d)\n", rx_buf->len);
+		++channel->n_rx_frm_trunc;
+		goto out;
+	}
+
+	ing_port = le16_to_cpu((__force __le16) PREFIX_FIELD(prefix, INGRESS_MPORT));
+
+	nic_data = efx->nic_data;
+
+	if (nic_data->have_mport && ing_port != nic_data->base_mport) {
+#ifdef CONFIG_SFC_SRIOV
+		struct efx_rep *efv;
+
+		rcu_read_lock();
+		efv = efx_ef100_find_rep_by_mport(efx, ing_port);
+		if (efv) {
+			if (efv->net_dev->flags & IFF_UP)
+				efx_ef100_rep_rx_packet(efv, rx_buf);
+			rcu_read_unlock();
+			/* Representor Rx doesn't care about PF Rx buffer
+			 * ownership, it just makes a copy. So, we are done
+			 * with the Rx buffer from PF point of view and should
+			 * free it.
+			 */
+			goto free_rx_buffer;
+		}
+		rcu_read_unlock();
+#endif
+		if (net_ratelimit())
+			netif_warn(efx, drv, efx->net_dev,
+				   "Unrecognised ing_port %04x (base %04x), dropping\n",
+				   ing_port, nic_data->base_mport);
+		channel->n_rx_mport_bad++;
+		goto free_rx_buffer;
+	}
+
+	if (likely(efx->net_dev->features & NETIF_F_RXCSUM)) {
+		if (PREFIX_FIELD(prefix, NT_OR_INNER_L3_CLASS) == 1) {
+			++channel->n_rx_ip_hdr_chksum_err;
+		} else {
+			u16 sum = be16_to_cpu((__force __be16)PREFIX_FIELD(prefix, CSUM_FRAME));
+
+			csum = (__force __wsum) sum;
+		}
+	}
+
+	if (channel->type->receive_skb) {
+		/* no support for special channels yet, so just discard */
+		WARN_ON_ONCE(1);
+		goto free_rx_buffer;
+	}
+
+	efx_rx_packet_gro(channel, rx_buf, channel->rx_pkt_n_frags, eh, csum);
+	goto out;
+
+free_rx_buffer:
+	efx_free_rx_buffers(rx_queue, rx_buf, 1);
+out:
+	channel->rx_pkt_n_frags = 0;
+}
+
+static void ef100_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index)
+{
+	struct efx_rx_buffer *rx_buf = efx_rx_buffer(rx_queue, index);
+	struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
+	struct efx_nic *efx = rx_queue->efx;
+
+	++rx_queue->rx_packets;
+
+	netif_vdbg(efx, rx_status, efx->net_dev,
+		   "RX queue %d received id %x\n",
+		   efx_rx_queue_index(rx_queue), index);
+
+	efx_sync_rx_buffer(efx, rx_buf, efx->rx_dma_len);
+
+	prefetch(efx_rx_buf_va(rx_buf));
+
+	rx_buf->page_offset += efx->rx_prefix_size;
+
+	efx_recycle_rx_pages(channel, rx_buf, 1);
+
+	efx_rx_flush_packet(channel);
+	channel->rx_pkt_n_frags = 1;
+	channel->rx_pkt_index = index;
+}
+
+void efx_ef100_ev_rx(struct efx_channel *channel, const efx_qword_t *p_event)
+{
+	struct efx_rx_queue *rx_queue = efx_channel_get_rx_queue(channel);
+	unsigned int n_packets =
+		EFX_QWORD_FIELD(*p_event, ESF_GZ_EV_RXPKTS_NUM_PKT);
+	int i;
+
+	WARN_ON_ONCE(!n_packets);
+	if (n_packets > 1)
+		++channel->n_rx_merge_events;
+
+	channel->irq_mod_score += 2 * n_packets;
+
+	for (i = 0; i < n_packets; ++i) {
+		ef100_rx_packet(rx_queue,
+				rx_queue->removed_count & rx_queue->ptr_mask);
+		++rx_queue->removed_count;
+	}
+}
+
+void ef100_rx_write(struct efx_rx_queue *rx_queue)
+{
+	unsigned int notified_count = rx_queue->notified_count;
+	struct efx_rx_buffer *rx_buf;
+	unsigned int idx;
+	efx_qword_t *rxd;
+	efx_dword_t rxdb;
+
+	while (notified_count != rx_queue->added_count) {
+		idx = notified_count & rx_queue->ptr_mask;
+		rx_buf = efx_rx_buffer(rx_queue, idx);
+		rxd = efx_rx_desc(rx_queue, idx);
+
+		EFX_POPULATE_QWORD_1(*rxd, ESF_GZ_RX_BUF_ADDR, rx_buf->dma_addr);
+
+		++notified_count;
+	}
+	if (notified_count == rx_queue->notified_count)
+		return;
+
+	wmb();
+	EFX_POPULATE_DWORD_1(rxdb, ERF_GZ_RX_RING_PIDX,
+			     rx_queue->added_count & rx_queue->ptr_mask);
+	efx_writed_page(rx_queue->efx, &rxdb,
+			ER_GZ_RX_RING_DOORBELL, efx_rx_queue_index(rx_queue));
+	if (rx_queue->grant_credits)
+		wmb();
+	rx_queue->notified_count = notified_count;
+	if (rx_queue->grant_credits)
+		schedule_work(&rx_queue->grant_work);
+}