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, 281 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hfi1/vnic_sdma.c b/drivers/infiniband/hw/hfi1/vnic_sdma.c
new file mode 100644
index 000000000..c3f0f8d87
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/vnic_sdma.c
@@ -0,0 +1,281 @@
+// SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
+/*
+ * Copyright(c) 2017 - 2018 Intel Corporation.
+ */
+
+/*
+ * This file contains HFI1 support for VNIC SDMA functionality
+ */
+
+#include "sdma.h"
+#include "vnic.h"
+
+#define HFI1_VNIC_SDMA_Q_ACTIVE   BIT(0)
+#define HFI1_VNIC_SDMA_Q_DEFERRED BIT(1)
+
+#define HFI1_VNIC_TXREQ_NAME_LEN   32
+#define HFI1_VNIC_SDMA_DESC_WTRMRK 64
+
+/*
+ * struct vnic_txreq - VNIC transmit descriptor
+ * @txreq: sdma transmit request
+ * @sdma: vnic sdma pointer
+ * @skb: skb to send
+ * @pad: pad buffer
+ * @plen: pad length
+ * @pbc_val: pbc value
+ */
+struct vnic_txreq {
+	struct sdma_txreq       txreq;
+	struct hfi1_vnic_sdma   *sdma;
+
+	struct sk_buff         *skb;
+	unsigned char           pad[HFI1_VNIC_MAX_PAD];
+	u16                     plen;
+	__le64                  pbc_val;
+};
+
+static void vnic_sdma_complete(struct sdma_txreq *txreq,
+			       int status)
+{
+	struct vnic_txreq *tx = container_of(txreq, struct vnic_txreq, txreq);
+	struct hfi1_vnic_sdma *vnic_sdma = tx->sdma;
+
+	sdma_txclean(vnic_sdma->dd, txreq);
+	dev_kfree_skb_any(tx->skb);
+	kmem_cache_free(vnic_sdma->dd->vnic.txreq_cache, tx);
+}
+
+static noinline int build_vnic_ulp_payload(struct sdma_engine *sde,
+					   struct vnic_txreq *tx)
+{
+	int i, ret = 0;
+
+	ret = sdma_txadd_kvaddr(
+		sde->dd,
+		&tx->txreq,
+		tx->skb->data,
+		skb_headlen(tx->skb));
+	if (unlikely(ret))
+		goto bail_txadd;
+
+	for (i = 0; i < skb_shinfo(tx->skb)->nr_frags; i++) {
+		skb_frag_t *frag = &skb_shinfo(tx->skb)->frags[i];
+
+		/* combine physically continuous fragments later? */
+		ret = sdma_txadd_page(sde->dd,
+				      &tx->txreq,
+				      skb_frag_page(frag),
+				      skb_frag_off(frag),
+				      skb_frag_size(frag));
+		if (unlikely(ret))
+			goto bail_txadd;
+	}
+
+	if (tx->plen)
+		ret = sdma_txadd_kvaddr(sde->dd, &tx->txreq,
+					tx->pad + HFI1_VNIC_MAX_PAD - tx->plen,
+					tx->plen);
+
+bail_txadd:
+	return ret;
+}
+
+static int build_vnic_tx_desc(struct sdma_engine *sde,
+			      struct vnic_txreq *tx,
+			      u64 pbc)
+{
+	int ret = 0;
+	u16 hdrbytes = 2 << 2;  /* PBC */
+
+	ret = sdma_txinit_ahg(
+		&tx->txreq,
+		0,
+		hdrbytes + tx->skb->len + tx->plen,
+		0,
+		0,
+		NULL,
+		0,
+		vnic_sdma_complete);
+	if (unlikely(ret))
+		goto bail_txadd;
+
+	/* add pbc */
+	tx->pbc_val = cpu_to_le64(pbc);
+	ret = sdma_txadd_kvaddr(
+		sde->dd,
+		&tx->txreq,
+		&tx->pbc_val,
+		hdrbytes);
+	if (unlikely(ret))
+		goto bail_txadd;
+
+	/* add the ulp payload */
+	ret = build_vnic_ulp_payload(sde, tx);
+bail_txadd:
+	return ret;
+}
+
+/* setup the last plen bypes of pad */
+static inline void hfi1_vnic_update_pad(unsigned char *pad, u8 plen)
+{
+	pad[HFI1_VNIC_MAX_PAD - 1] = plen - OPA_VNIC_ICRC_TAIL_LEN;
+}
+
+int hfi1_vnic_send_dma(struct hfi1_devdata *dd, u8 q_idx,
+		       struct hfi1_vnic_vport_info *vinfo,
+		       struct sk_buff *skb, u64 pbc, u8 plen)
+{
+	struct hfi1_vnic_sdma *vnic_sdma = &vinfo->sdma[q_idx];
+	struct sdma_engine *sde = vnic_sdma->sde;
+	struct vnic_txreq *tx;
+	int ret = -ECOMM;
+
+	if (unlikely(READ_ONCE(vnic_sdma->state) != HFI1_VNIC_SDMA_Q_ACTIVE))
+		goto tx_err;
+
+	if (unlikely(!sde || !sdma_running(sde)))
+		goto tx_err;
+
+	tx = kmem_cache_alloc(dd->vnic.txreq_cache, GFP_ATOMIC);
+	if (unlikely(!tx)) {
+		ret = -ENOMEM;
+		goto tx_err;
+	}
+
+	tx->sdma = vnic_sdma;
+	tx->skb = skb;
+	hfi1_vnic_update_pad(tx->pad, plen);
+	tx->plen = plen;
+	ret = build_vnic_tx_desc(sde, tx, pbc);
+	if (unlikely(ret))
+		goto free_desc;
+
+	ret = sdma_send_txreq(sde, iowait_get_ib_work(&vnic_sdma->wait),
+			      &tx->txreq, vnic_sdma->pkts_sent);
+	/* When -ECOMM, sdma callback will be called with ABORT status */
+	if (unlikely(ret && unlikely(ret != -ECOMM)))
+		goto free_desc;
+
+	if (!ret) {
+		vnic_sdma->pkts_sent = true;
+		iowait_starve_clear(vnic_sdma->pkts_sent, &vnic_sdma->wait);
+	}
+	return ret;
+
+free_desc:
+	sdma_txclean(dd, &tx->txreq);
+	kmem_cache_free(dd->vnic.txreq_cache, tx);
+tx_err:
+	if (ret != -EBUSY)
+		dev_kfree_skb_any(skb);
+	else
+		vnic_sdma->pkts_sent = false;
+	return ret;
+}
+
+/*
+ * hfi1_vnic_sdma_sleep - vnic sdma sleep function
+ *
+ * This function gets called from sdma_send_txreq() when there are not enough
+ * sdma descriptors available to send the packet. It adds Tx queue's wait
+ * structure to sdma engine's dmawait list to be woken up when descriptors
+ * become available.
+ */
+static int hfi1_vnic_sdma_sleep(struct sdma_engine *sde,
+				struct iowait_work *wait,
+				struct sdma_txreq *txreq,
+				uint seq,
+				bool pkts_sent)
+{
+	struct hfi1_vnic_sdma *vnic_sdma =
+		container_of(wait->iow, struct hfi1_vnic_sdma, wait);
+
+	write_seqlock(&sde->waitlock);
+	if (sdma_progress(sde, seq, txreq)) {
+		write_sequnlock(&sde->waitlock);
+		return -EAGAIN;
+	}
+
+	vnic_sdma->state = HFI1_VNIC_SDMA_Q_DEFERRED;
+	if (list_empty(&vnic_sdma->wait.list)) {
+		iowait_get_priority(wait->iow);
+		iowait_queue(pkts_sent, wait->iow, &sde->dmawait);
+	}
+	write_sequnlock(&sde->waitlock);
+	return -EBUSY;
+}
+
+/*
+ * hfi1_vnic_sdma_wakeup - vnic sdma wakeup function
+ *
+ * This function gets called when SDMA descriptors becomes available and Tx
+ * queue's wait structure was previously added to sdma engine's dmawait list.
+ * It notifies the upper driver about Tx queue wakeup.
+ */
+static void hfi1_vnic_sdma_wakeup(struct iowait *wait, int reason)
+{
+	struct hfi1_vnic_sdma *vnic_sdma =
+		container_of(wait, struct hfi1_vnic_sdma, wait);
+	struct hfi1_vnic_vport_info *vinfo = vnic_sdma->vinfo;
+
+	vnic_sdma->state = HFI1_VNIC_SDMA_Q_ACTIVE;
+	if (__netif_subqueue_stopped(vinfo->netdev, vnic_sdma->q_idx))
+		netif_wake_subqueue(vinfo->netdev, vnic_sdma->q_idx);
+};
+
+inline bool hfi1_vnic_sdma_write_avail(struct hfi1_vnic_vport_info *vinfo,
+				       u8 q_idx)
+{
+	struct hfi1_vnic_sdma *vnic_sdma = &vinfo->sdma[q_idx];
+
+	return (READ_ONCE(vnic_sdma->state) == HFI1_VNIC_SDMA_Q_ACTIVE);
+}
+
+void hfi1_vnic_sdma_init(struct hfi1_vnic_vport_info *vinfo)
+{
+	int i;
+
+	for (i = 0; i < vinfo->num_tx_q; i++) {
+		struct hfi1_vnic_sdma *vnic_sdma = &vinfo->sdma[i];
+
+		iowait_init(&vnic_sdma->wait, 0, NULL, NULL,
+			    hfi1_vnic_sdma_sleep,
+			    hfi1_vnic_sdma_wakeup, NULL, NULL);
+		vnic_sdma->sde = &vinfo->dd->per_sdma[i];
+		vnic_sdma->dd = vinfo->dd;
+		vnic_sdma->vinfo = vinfo;
+		vnic_sdma->q_idx = i;
+		vnic_sdma->state = HFI1_VNIC_SDMA_Q_ACTIVE;
+
+		/* Add a free descriptor watermark for wakeups */
+		if (vnic_sdma->sde->descq_cnt > HFI1_VNIC_SDMA_DESC_WTRMRK) {
+			struct iowait_work *work;
+
+			INIT_LIST_HEAD(&vnic_sdma->stx.list);
+			vnic_sdma->stx.num_desc = HFI1_VNIC_SDMA_DESC_WTRMRK;
+			work = iowait_get_ib_work(&vnic_sdma->wait);
+			list_add_tail(&vnic_sdma->stx.list, &work->tx_head);
+		}
+	}
+}
+
+int hfi1_vnic_txreq_init(struct hfi1_devdata *dd)
+{
+	char buf[HFI1_VNIC_TXREQ_NAME_LEN];
+
+	snprintf(buf, sizeof(buf), "hfi1_%u_vnic_txreq_cache", dd->unit);
+	dd->vnic.txreq_cache = kmem_cache_create(buf,
+						 sizeof(struct vnic_txreq),
+						 0, SLAB_HWCACHE_ALIGN,
+						 NULL);
+	if (!dd->vnic.txreq_cache)
+		return -ENOMEM;
+	return 0;
+}
+
+void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd)
+{
+	kmem_cache_destroy(dd->vnic.txreq_cache);
+	dd->vnic.txreq_cache = NULL;
+}