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, 319 insertions, 0 deletions

diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c b/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c
new file mode 100644
index 000000000..5adba0f75
--- /dev/null
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c
@@ -0,0 +1,319 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * RDMA Transport Layer
+ *
+ * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
+ * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
+ * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
+ */
+#undef pr_fmt
+#define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
+
+#include "rtrs-pri.h"
+#include "rtrs-srv.h"
+#include "rtrs-log.h"
+
+static void rtrs_srv_release(struct kobject *kobj)
+{
+	struct rtrs_srv_path *srv_path;
+
+	srv_path = container_of(kobj, struct rtrs_srv_path, kobj);
+	kfree(srv_path);
+}
+
+static struct kobj_type ktype = {
+	.sysfs_ops	= &kobj_sysfs_ops,
+	.release	= rtrs_srv_release,
+};
+
+static ssize_t rtrs_srv_disconnect_show(struct kobject *kobj,
+					struct kobj_attribute *attr, char *buf)
+{
+	return sysfs_emit(buf, "Usage: echo 1 > %s\n", attr->attr.name);
+}
+
+static ssize_t rtrs_srv_disconnect_store(struct kobject *kobj,
+					  struct kobj_attribute *attr,
+					  const char *buf, size_t count)
+{
+	struct rtrs_srv_path *srv_path;
+	struct rtrs_path *s;
+	char str[MAXHOSTNAMELEN];
+
+	srv_path = container_of(kobj, struct rtrs_srv_path, kobj);
+	s = &srv_path->s;
+	if (!sysfs_streq(buf, "1")) {
+		rtrs_err(s, "%s: invalid value: '%s'\n",
+			  attr->attr.name, buf);
+		return -EINVAL;
+	}
+
+	sockaddr_to_str((struct sockaddr *)&srv_path->s.dst_addr, str,
+			sizeof(str));
+
+	rtrs_info(s, "disconnect for path %s requested\n", str);
+	/* first remove sysfs itself to avoid deadlock */
+	sysfs_remove_file_self(&srv_path->kobj, &attr->attr);
+	close_path(srv_path);
+
+	return count;
+}
+
+static struct kobj_attribute rtrs_srv_disconnect_attr =
+	__ATTR(disconnect, 0644,
+	       rtrs_srv_disconnect_show, rtrs_srv_disconnect_store);
+
+static ssize_t rtrs_srv_hca_port_show(struct kobject *kobj,
+				       struct kobj_attribute *attr,
+				       char *page)
+{
+	struct rtrs_srv_path *srv_path;
+	struct rtrs_con *usr_con;
+
+	srv_path = container_of(kobj, typeof(*srv_path), kobj);
+	usr_con = srv_path->s.con[0];
+
+	return sysfs_emit(page, "%u\n", usr_con->cm_id->port_num);
+}
+
+static struct kobj_attribute rtrs_srv_hca_port_attr =
+	__ATTR(hca_port, 0444, rtrs_srv_hca_port_show, NULL);
+
+static ssize_t rtrs_srv_hca_name_show(struct kobject *kobj,
+				       struct kobj_attribute *attr,
+				       char *page)
+{
+	struct rtrs_srv_path *srv_path;
+
+	srv_path = container_of(kobj, struct rtrs_srv_path, kobj);
+
+	return sysfs_emit(page, "%s\n", srv_path->s.dev->ib_dev->name);
+}
+
+static struct kobj_attribute rtrs_srv_hca_name_attr =
+	__ATTR(hca_name, 0444, rtrs_srv_hca_name_show, NULL);
+
+static ssize_t rtrs_srv_src_addr_show(struct kobject *kobj,
+				       struct kobj_attribute *attr,
+				       char *page)
+{
+	struct rtrs_srv_path *srv_path;
+	int cnt;
+
+	srv_path = container_of(kobj, struct rtrs_srv_path, kobj);
+	cnt = sockaddr_to_str((struct sockaddr *)&srv_path->s.dst_addr,
+			      page, PAGE_SIZE);
+	return cnt + sysfs_emit_at(page, cnt, "\n");
+}
+
+static struct kobj_attribute rtrs_srv_src_addr_attr =
+	__ATTR(src_addr, 0444, rtrs_srv_src_addr_show, NULL);
+
+static ssize_t rtrs_srv_dst_addr_show(struct kobject *kobj,
+				       struct kobj_attribute *attr,
+				       char *page)
+{
+	struct rtrs_srv_path *srv_path;
+	int len;
+
+	srv_path = container_of(kobj, struct rtrs_srv_path, kobj);
+	len = sockaddr_to_str((struct sockaddr *)&srv_path->s.src_addr, page,
+			      PAGE_SIZE);
+	len += sysfs_emit_at(page, len, "\n");
+	return len;
+}
+
+static struct kobj_attribute rtrs_srv_dst_addr_attr =
+	__ATTR(dst_addr, 0444, rtrs_srv_dst_addr_show, NULL);
+
+static struct attribute *rtrs_srv_path_attrs[] = {
+	&rtrs_srv_hca_name_attr.attr,
+	&rtrs_srv_hca_port_attr.attr,
+	&rtrs_srv_src_addr_attr.attr,
+	&rtrs_srv_dst_addr_attr.attr,
+	&rtrs_srv_disconnect_attr.attr,
+	NULL,
+};
+
+static const struct attribute_group rtrs_srv_path_attr_group = {
+	.attrs = rtrs_srv_path_attrs,
+};
+
+STAT_ATTR(struct rtrs_srv_stats, rdma,
+	  rtrs_srv_stats_rdma_to_str,
+	  rtrs_srv_reset_rdma_stats);
+
+static struct attribute *rtrs_srv_stats_attrs[] = {
+	&rdma_attr.attr,
+	NULL,
+};
+
+static const struct attribute_group rtrs_srv_stats_attr_group = {
+	.attrs = rtrs_srv_stats_attrs,
+};
+
+static int rtrs_srv_create_once_sysfs_root_folders(struct rtrs_srv_path *srv_path)
+{
+	struct rtrs_srv_sess *srv = srv_path->srv;
+	int err = 0;
+
+	mutex_lock(&srv->paths_mutex);
+	if (srv->dev_ref++) {
+		/*
+		 * Device needs to be registered only on the first session
+		 */
+		goto unlock;
+	}
+	srv->dev.class = rtrs_dev_class;
+	err = dev_set_name(&srv->dev, "%s", srv_path->s.sessname);
+	if (err)
+		goto unlock;
+
+	/*
+	 * Suppress user space notification until
+	 * sysfs files are created
+	 */
+	dev_set_uevent_suppress(&srv->dev, true);
+	err = device_add(&srv->dev);
+	if (err) {
+		pr_err("device_add(): %d\n", err);
+		put_device(&srv->dev);
+		goto unlock;
+	}
+	srv->kobj_paths = kobject_create_and_add("paths", &srv->dev.kobj);
+	if (!srv->kobj_paths) {
+		err = -ENOMEM;
+		pr_err("kobject_create_and_add(): %d\n", err);
+		device_del(&srv->dev);
+		put_device(&srv->dev);
+		goto unlock;
+	}
+	dev_set_uevent_suppress(&srv->dev, false);
+	kobject_uevent(&srv->dev.kobj, KOBJ_ADD);
+unlock:
+	mutex_unlock(&srv->paths_mutex);
+
+	return err;
+}
+
+static void
+rtrs_srv_destroy_once_sysfs_root_folders(struct rtrs_srv_path *srv_path)
+{
+	struct rtrs_srv_sess *srv = srv_path->srv;
+
+	mutex_lock(&srv->paths_mutex);
+	if (!--srv->dev_ref) {
+		kobject_put(srv->kobj_paths);
+		mutex_unlock(&srv->paths_mutex);
+		device_del(&srv->dev);
+		put_device(&srv->dev);
+	} else {
+		put_device(&srv->dev);
+		mutex_unlock(&srv->paths_mutex);
+	}
+}
+
+static void rtrs_srv_path_stats_release(struct kobject *kobj)
+{
+	struct rtrs_srv_stats *stats;
+
+	stats = container_of(kobj, struct rtrs_srv_stats, kobj_stats);
+
+	free_percpu(stats->rdma_stats);
+
+	kfree(stats);
+}
+
+static struct kobj_type ktype_stats = {
+	.sysfs_ops = &kobj_sysfs_ops,
+	.release = rtrs_srv_path_stats_release,
+};
+
+static int rtrs_srv_create_stats_files(struct rtrs_srv_path *srv_path)
+{
+	int err;
+	struct rtrs_path *s = &srv_path->s;
+
+	err = kobject_init_and_add(&srv_path->stats->kobj_stats, &ktype_stats,
+				   &srv_path->kobj, "stats");
+	if (err) {
+		rtrs_err(s, "kobject_init_and_add(): %d\n", err);
+		kobject_put(&srv_path->stats->kobj_stats);
+		return err;
+	}
+	err = sysfs_create_group(&srv_path->stats->kobj_stats,
+				 &rtrs_srv_stats_attr_group);
+	if (err) {
+		rtrs_err(s, "sysfs_create_group(): %d\n", err);
+		goto err;
+	}
+
+	return 0;
+
+err:
+	kobject_del(&srv_path->stats->kobj_stats);
+	kobject_put(&srv_path->stats->kobj_stats);
+
+	return err;
+}
+
+int rtrs_srv_create_path_files(struct rtrs_srv_path *srv_path)
+{
+	struct rtrs_srv_sess *srv = srv_path->srv;
+	struct rtrs_path *s = &srv_path->s;
+	char str[NAME_MAX];
+	int err;
+	struct rtrs_addr path = {
+		.src = &srv_path->s.dst_addr,
+		.dst = &srv_path->s.src_addr,
+	};
+
+	rtrs_addr_to_str(&path, str, sizeof(str));
+	err = rtrs_srv_create_once_sysfs_root_folders(srv_path);
+	if (err)
+		return err;
+
+	err = kobject_init_and_add(&srv_path->kobj, &ktype, srv->kobj_paths,
+				   "%s", str);
+	if (err) {
+		rtrs_err(s, "kobject_init_and_add(): %d\n", err);
+		goto destroy_root;
+	}
+	err = sysfs_create_group(&srv_path->kobj, &rtrs_srv_path_attr_group);
+	if (err) {
+		rtrs_err(s, "sysfs_create_group(): %d\n", err);
+		goto put_kobj;
+	}
+	err = rtrs_srv_create_stats_files(srv_path);
+	if (err)
+		goto remove_group;
+
+	return 0;
+
+remove_group:
+	sysfs_remove_group(&srv_path->kobj, &rtrs_srv_path_attr_group);
+put_kobj:
+	kobject_del(&srv_path->kobj);
+destroy_root:
+	kobject_put(&srv_path->kobj);
+	rtrs_srv_destroy_once_sysfs_root_folders(srv_path);
+
+	return err;
+}
+
+void rtrs_srv_destroy_path_files(struct rtrs_srv_path *srv_path)
+{
+	if (srv_path->stats->kobj_stats.state_in_sysfs) {
+		sysfs_remove_group(&srv_path->stats->kobj_stats,
+				   &rtrs_srv_stats_attr_group);
+		kobject_del(&srv_path->stats->kobj_stats);
+		kobject_put(&srv_path->stats->kobj_stats);
+	}
+
+	if (srv_path->kobj.state_in_sysfs) {
+		sysfs_remove_group(&srv_path->kobj, &rtrs_srv_path_attr_group);
+		kobject_put(&srv_path->kobj);
+		rtrs_srv_destroy_once_sysfs_root_folders(srv_path);
+	}
+
+}