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, 251 insertions, 0 deletions

diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
new file mode 100644
index 000000000..07e9abb59
--- /dev/null
+++ b/net/llc/llc_proc.c
@@ -0,0 +1,251 @@
+/*
+ * proc_llc.c - proc interface for LLC
+ *
+ * Copyright (c) 2001 by Jay Schulist <jschlst@samba.org>
+ *		 2002-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *
+ * This program can be redistributed or modified under the terms of the
+ * GNU General Public License as published by the Free Software Foundation.
+ * This program is distributed without any warranty or implied warranty
+ * of merchantability or fitness for a particular purpose.
+ *
+ * See the GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/errno.h>
+#include <linux/seq_file.h>
+#include <linux/export.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <net/llc.h>
+#include <net/llc_c_ac.h>
+#include <net/llc_c_ev.h>
+#include <net/llc_c_st.h>
+#include <net/llc_conn.h>
+
+static void llc_ui_format_mac(struct seq_file *seq, const u8 *addr)
+{
+	seq_printf(seq, "%pM", addr);
+}
+
+static struct sock *llc_get_sk_idx(loff_t pos)
+{
+	struct llc_sap *sap;
+	struct sock *sk = NULL;
+	int i;
+
+	list_for_each_entry_rcu(sap, &llc_sap_list, node) {
+		spin_lock_bh(&sap->sk_lock);
+		for (i = 0; i < LLC_SK_LADDR_HASH_ENTRIES; i++) {
+			struct hlist_nulls_head *head = &sap->sk_laddr_hash[i];
+			struct hlist_nulls_node *node;
+
+			sk_nulls_for_each(sk, node, head) {
+				if (!pos)
+					goto found; /* keep the lock */
+				--pos;
+			}
+		}
+		spin_unlock_bh(&sap->sk_lock);
+	}
+	sk = NULL;
+found:
+	return sk;
+}
+
+static void *llc_seq_start(struct seq_file *seq, loff_t *pos) __acquires(RCU)
+{
+	loff_t l = *pos;
+
+	rcu_read_lock_bh();
+	return l ? llc_get_sk_idx(--l) : SEQ_START_TOKEN;
+}
+
+static struct sock *laddr_hash_next(struct llc_sap *sap, int bucket)
+{
+	struct hlist_nulls_node *node;
+	struct sock *sk = NULL;
+
+	while (++bucket < LLC_SK_LADDR_HASH_ENTRIES)
+		sk_nulls_for_each(sk, node, &sap->sk_laddr_hash[bucket])
+			goto out;
+
+out:
+	return sk;
+}
+
+static void *llc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct sock* sk, *next;
+	struct llc_sock *llc;
+	struct llc_sap *sap;
+
+	++*pos;
+	if (v == SEQ_START_TOKEN) {
+		sk = llc_get_sk_idx(0);
+		goto out;
+	}
+	sk = v;
+	next = sk_nulls_next(sk);
+	if (next) {
+		sk = next;
+		goto out;
+	}
+	llc = llc_sk(sk);
+	sap = llc->sap;
+	sk = laddr_hash_next(sap, llc_sk_laddr_hashfn(sap, &llc->laddr));
+	if (sk)
+		goto out;
+	spin_unlock_bh(&sap->sk_lock);
+	list_for_each_entry_continue_rcu(sap, &llc_sap_list, node) {
+		spin_lock_bh(&sap->sk_lock);
+		sk = laddr_hash_next(sap, -1);
+		if (sk)
+			break; /* keep the lock */
+		spin_unlock_bh(&sap->sk_lock);
+	}
+out:
+	return sk;
+}
+
+static void llc_seq_stop(struct seq_file *seq, void *v)
+{
+	if (v && v != SEQ_START_TOKEN) {
+		struct sock *sk = v;
+		struct llc_sock *llc = llc_sk(sk);
+		struct llc_sap *sap = llc->sap;
+
+		spin_unlock_bh(&sap->sk_lock);
+	}
+	rcu_read_unlock_bh();
+}
+
+static int llc_seq_socket_show(struct seq_file *seq, void *v)
+{
+	struct sock* sk;
+	struct llc_sock *llc;
+
+	if (v == SEQ_START_TOKEN) {
+		seq_puts(seq, "SKt Mc local_mac_sap        remote_mac_sap   "
+			      "    tx_queue rx_queue st uid link\n");
+		goto out;
+	}
+	sk = v;
+	llc = llc_sk(sk);
+
+	/* FIXME: check if the address is multicast */
+	seq_printf(seq, "%2X  %2X ", sk->sk_type, 0);
+
+	if (llc->dev)
+		llc_ui_format_mac(seq, llc->dev->dev_addr);
+	else {
+		u8 addr[6] = {0,0,0,0,0,0};
+		llc_ui_format_mac(seq, addr);
+	}
+	seq_printf(seq, "@%02X ", llc->sap->laddr.lsap);
+	llc_ui_format_mac(seq, llc->daddr.mac);
+	seq_printf(seq, "@%02X %8d %8d %2d %3u %4d\n", llc->daddr.lsap,
+		   sk_wmem_alloc_get(sk),
+		   sk_rmem_alloc_get(sk) - llc->copied_seq,
+		   sk->sk_state,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
+		   llc->link);
+out:
+	return 0;
+}
+
+static const char *const llc_conn_state_names[] = {
+	[LLC_CONN_STATE_ADM] =        "adm",
+	[LLC_CONN_STATE_SETUP] =      "setup",
+	[LLC_CONN_STATE_NORMAL] =     "normal",
+	[LLC_CONN_STATE_BUSY] =       "busy",
+	[LLC_CONN_STATE_REJ] =        "rej",
+	[LLC_CONN_STATE_AWAIT] =      "await",
+	[LLC_CONN_STATE_AWAIT_BUSY] = "await_busy",
+	[LLC_CONN_STATE_AWAIT_REJ] =  "await_rej",
+	[LLC_CONN_STATE_D_CONN]	=     "d_conn",
+	[LLC_CONN_STATE_RESET] =      "reset",
+	[LLC_CONN_STATE_ERROR] =      "error",
+	[LLC_CONN_STATE_TEMP] =       "temp",
+};
+
+static int llc_seq_core_show(struct seq_file *seq, void *v)
+{
+	struct sock* sk;
+	struct llc_sock *llc;
+
+	if (v == SEQ_START_TOKEN) {
+		seq_puts(seq, "Connection list:\n"
+			      "dsap state      retr txw rxw pf ff sf df rs cs "
+			      "tack tpfc trs tbs blog busr\n");
+		goto out;
+	}
+	sk = v;
+	llc = llc_sk(sk);
+
+	seq_printf(seq, " %02X  %-10s %3d  %3d %3d %2d %2d %2d %2d %2d %2d "
+			"%4d %4d %3d %3d %4d %4d\n",
+		   llc->daddr.lsap, llc_conn_state_names[llc->state],
+		   llc->retry_count, llc->k, llc->rw, llc->p_flag, llc->f_flag,
+		   llc->s_flag, llc->data_flag, llc->remote_busy_flag,
+		   llc->cause_flag, timer_pending(&llc->ack_timer.timer),
+		   timer_pending(&llc->pf_cycle_timer.timer),
+		   timer_pending(&llc->rej_sent_timer.timer),
+		   timer_pending(&llc->busy_state_timer.timer),
+		   !!sk->sk_backlog.tail, sock_owned_by_user_nocheck(sk));
+out:
+	return 0;
+}
+
+static const struct seq_operations llc_seq_socket_ops = {
+	.start  = llc_seq_start,
+	.next   = llc_seq_next,
+	.stop   = llc_seq_stop,
+	.show   = llc_seq_socket_show,
+};
+
+static const struct seq_operations llc_seq_core_ops = {
+	.start  = llc_seq_start,
+	.next   = llc_seq_next,
+	.stop   = llc_seq_stop,
+	.show   = llc_seq_core_show,
+};
+
+static struct proc_dir_entry *llc_proc_dir;
+
+int __init llc_proc_init(void)
+{
+	int rc = -ENOMEM;
+	struct proc_dir_entry *p;
+
+	llc_proc_dir = proc_mkdir("llc", init_net.proc_net);
+	if (!llc_proc_dir)
+		goto out;
+
+	p = proc_create_seq("socket", 0444, llc_proc_dir, &llc_seq_socket_ops);
+	if (!p)
+		goto out_socket;
+
+	p = proc_create_seq("core", 0444, llc_proc_dir, &llc_seq_core_ops);
+	if (!p)
+		goto out_core;
+
+	rc = 0;
+out:
+	return rc;
+out_core:
+	remove_proc_entry("socket", llc_proc_dir);
+out_socket:
+	remove_proc_entry("llc", init_net.proc_net);
+	goto out;
+}
+
+void llc_proc_exit(void)
+{
+	remove_proc_entry("socket", llc_proc_dir);
+	remove_proc_entry("core", llc_proc_dir);
+	remove_proc_entry("llc", init_net.proc_net);
+}