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/infiniband/hw/mthca/mthca_mcg.c b/drivers/infiniband/hw/mthca/mthca_mcg.c
new file mode 100644
index 000000000..6304ae8f4
--- /dev/null
+++ b/drivers/infiniband/hw/mthca/mthca_mcg.c
@@ -0,0 +1,335 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/string.h>
+#include <linux/gfp.h>
+
+#include "mthca_dev.h"
+#include "mthca_cmd.h"
+
+struct mthca_mgm {
+	__be32 next_gid_index;
+	u32    reserved[3];
+	u8     gid[16];
+	__be32 qp[MTHCA_QP_PER_MGM];
+};
+
+static const u8 zero_gid[16];	/* automatically initialized to 0 */
+
+/*
+ * Caller must hold MCG table semaphore.  gid and mgm parameters must
+ * be properly aligned for command interface.
+ *
+ *  Returns 0 unless a firmware command error occurs.
+ *
+ * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
+ * and *mgm holds MGM entry.
+ *
+ * if GID is found in AMGM, *index = index in AMGM, *prev = index of
+ * previous entry in hash chain and *mgm holds AMGM entry.
+ *
+ * If no AMGM exists for given gid, *index = -1, *prev = index of last
+ * entry in hash chain and *mgm holds end of hash chain.
+ */
+static int find_mgm(struct mthca_dev *dev,
+		    u8 *gid, struct mthca_mailbox *mgm_mailbox,
+		    u16 *hash, int *prev, int *index)
+{
+	struct mthca_mailbox *mailbox;
+	struct mthca_mgm *mgm = mgm_mailbox->buf;
+	u8 *mgid;
+	int err;
+
+	mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
+	if (IS_ERR(mailbox))
+		return -ENOMEM;
+	mgid = mailbox->buf;
+
+	memcpy(mgid, gid, 16);
+
+	err = mthca_MGID_HASH(dev, mailbox, hash);
+	if (err) {
+		mthca_err(dev, "MGID_HASH failed (%d)\n", err);
+		goto out;
+	}
+
+	if (0)
+		mthca_dbg(dev, "Hash for %pI6 is %04x\n", gid, *hash);
+
+	*index = *hash;
+	*prev  = -1;
+
+	do {
+		err = mthca_READ_MGM(dev, *index, mgm_mailbox);
+		if (err) {
+			mthca_err(dev, "READ_MGM failed (%d)\n", err);
+			goto out;
+		}
+
+		if (!memcmp(mgm->gid, zero_gid, 16)) {
+			if (*index != *hash) {
+				mthca_err(dev, "Found zero MGID in AMGM.\n");
+				err = -EINVAL;
+			}
+			goto out;
+		}
+
+		if (!memcmp(mgm->gid, gid, 16))
+			goto out;
+
+		*prev = *index;
+		*index = be32_to_cpu(mgm->next_gid_index) >> 6;
+	} while (*index);
+
+	*index = -1;
+
+ out:
+	mthca_free_mailbox(dev, mailbox);
+	return err;
+}
+
+int mthca_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+	struct mthca_dev *dev = to_mdev(ibqp->device);
+	struct mthca_mailbox *mailbox;
+	struct mthca_mgm *mgm;
+	u16 hash;
+	int index, prev;
+	int link = 0;
+	int i;
+	int err;
+
+	mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
+	if (IS_ERR(mailbox))
+		return PTR_ERR(mailbox);
+	mgm = mailbox->buf;
+
+	mutex_lock(&dev->mcg_table.mutex);
+
+	err = find_mgm(dev, gid->raw, mailbox, &hash, &prev, &index);
+	if (err)
+		goto out;
+
+	if (index != -1) {
+		if (!memcmp(mgm->gid, zero_gid, 16))
+			memcpy(mgm->gid, gid->raw, 16);
+	} else {
+		link = 1;
+
+		index = mthca_alloc(&dev->mcg_table.alloc);
+		if (index == -1) {
+			mthca_err(dev, "No AMGM entries left\n");
+			err = -ENOMEM;
+			goto out;
+		}
+
+		err = mthca_READ_MGM(dev, index, mailbox);
+		if (err) {
+			mthca_err(dev, "READ_MGM failed (%d)\n", err);
+			goto out;
+		}
+		memset(mgm, 0, sizeof *mgm);
+		memcpy(mgm->gid, gid->raw, 16);
+	}
+
+	for (i = 0; i < MTHCA_QP_PER_MGM; ++i)
+		if (mgm->qp[i] == cpu_to_be32(ibqp->qp_num | (1 << 31))) {
+			mthca_dbg(dev, "QP %06x already a member of MGM\n",
+				  ibqp->qp_num);
+			err = 0;
+			goto out;
+		} else if (!(mgm->qp[i] & cpu_to_be32(1 << 31))) {
+			mgm->qp[i] = cpu_to_be32(ibqp->qp_num | (1 << 31));
+			break;
+		}
+
+	if (i == MTHCA_QP_PER_MGM) {
+		mthca_err(dev, "MGM at index %x is full.\n", index);
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = mthca_WRITE_MGM(dev, index, mailbox);
+	if (err) {
+		mthca_err(dev, "WRITE_MGM failed %d\n", err);
+		err = -EINVAL;
+		goto out;
+	}
+
+	if (!link)
+		goto out;
+
+	err = mthca_READ_MGM(dev, prev, mailbox);
+	if (err) {
+		mthca_err(dev, "READ_MGM failed %d\n", err);
+		goto out;
+	}
+
+	mgm->next_gid_index = cpu_to_be32(index << 6);
+
+	err = mthca_WRITE_MGM(dev, prev, mailbox);
+	if (err)
+		mthca_err(dev, "WRITE_MGM returned %d\n", err);
+
+ out:
+	if (err && link && index != -1) {
+		BUG_ON(index < dev->limits.num_mgms);
+		mthca_free(&dev->mcg_table.alloc, index);
+	}
+	mutex_unlock(&dev->mcg_table.mutex);
+
+	mthca_free_mailbox(dev, mailbox);
+	return err;
+}
+
+int mthca_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+	struct mthca_dev *dev = to_mdev(ibqp->device);
+	struct mthca_mailbox *mailbox;
+	struct mthca_mgm *mgm;
+	u16 hash;
+	int prev, index;
+	int i, loc;
+	int err;
+
+	mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
+	if (IS_ERR(mailbox))
+		return PTR_ERR(mailbox);
+	mgm = mailbox->buf;
+
+	mutex_lock(&dev->mcg_table.mutex);
+
+	err = find_mgm(dev, gid->raw, mailbox, &hash, &prev, &index);
+	if (err)
+		goto out;
+
+	if (index == -1) {
+		mthca_err(dev, "MGID %pI6 not found\n", gid->raw);
+		err = -EINVAL;
+		goto out;
+	}
+
+	for (loc = -1, i = 0; i < MTHCA_QP_PER_MGM; ++i) {
+		if (mgm->qp[i] == cpu_to_be32(ibqp->qp_num | (1 << 31)))
+			loc = i;
+		if (!(mgm->qp[i] & cpu_to_be32(1 << 31)))
+			break;
+	}
+
+	if (loc == -1) {
+		mthca_err(dev, "QP %06x not found in MGM\n", ibqp->qp_num);
+		err = -EINVAL;
+		goto out;
+	}
+
+	mgm->qp[loc]   = mgm->qp[i - 1];
+	mgm->qp[i - 1] = 0;
+
+	err = mthca_WRITE_MGM(dev, index, mailbox);
+	if (err) {
+		mthca_err(dev, "WRITE_MGM returned %d\n", err);
+		goto out;
+	}
+
+	if (i != 1)
+		goto out;
+
+	if (prev == -1) {
+		/* Remove entry from MGM */
+		int amgm_index_to_free = be32_to_cpu(mgm->next_gid_index) >> 6;
+		if (amgm_index_to_free) {
+			err = mthca_READ_MGM(dev, amgm_index_to_free,
+					     mailbox);
+			if (err) {
+				mthca_err(dev, "READ_MGM returned %d\n", err);
+				goto out;
+			}
+		} else
+			memset(mgm->gid, 0, 16);
+
+		err = mthca_WRITE_MGM(dev, index, mailbox);
+		if (err) {
+			mthca_err(dev, "WRITE_MGM returned %d\n", err);
+			goto out;
+		}
+		if (amgm_index_to_free) {
+			BUG_ON(amgm_index_to_free < dev->limits.num_mgms);
+			mthca_free(&dev->mcg_table.alloc, amgm_index_to_free);
+		}
+	} else {
+		/* Remove entry from AMGM */
+		int curr_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
+		err = mthca_READ_MGM(dev, prev, mailbox);
+		if (err) {
+			mthca_err(dev, "READ_MGM returned %d\n", err);
+			goto out;
+		}
+
+		mgm->next_gid_index = cpu_to_be32(curr_next_index << 6);
+
+		err = mthca_WRITE_MGM(dev, prev, mailbox);
+		if (err) {
+			mthca_err(dev, "WRITE_MGM returned %d\n", err);
+			goto out;
+		}
+		BUG_ON(index < dev->limits.num_mgms);
+		mthca_free(&dev->mcg_table.alloc, index);
+	}
+
+ out:
+	mutex_unlock(&dev->mcg_table.mutex);
+
+	mthca_free_mailbox(dev, mailbox);
+	return err;
+}
+
+int mthca_init_mcg_table(struct mthca_dev *dev)
+{
+	int err;
+	int table_size = dev->limits.num_mgms + dev->limits.num_amgms;
+
+	err = mthca_alloc_init(&dev->mcg_table.alloc,
+			       table_size,
+			       table_size - 1,
+			       dev->limits.num_mgms);
+	if (err)
+		return err;
+
+	mutex_init(&dev->mcg_table.mutex);
+
+	return 0;
+}
+
+void mthca_cleanup_mcg_table(struct mthca_dev *dev)
+{
+	mthca_alloc_cleanup(&dev->mcg_table.alloc);
+}