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, 202 insertions, 0 deletions

diff --git a/fs/ufs/cylinder.c b/fs/ufs/cylinder.c
new file mode 100644
index 000000000..1abe5454d
--- /dev/null
+++ b/fs/ufs/cylinder.c
@@ -0,0 +1,202 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  linux/fs/ufs/cylinder.c
+ *
+ * Copyright (C) 1998
+ * Daniel Pirkl <daniel.pirkl@email.cz>
+ * Charles University, Faculty of Mathematics and Physics
+ *
+ *  ext2 - inode (block) bitmap caching inspired
+ */
+
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/bitops.h>
+
+#include <asm/byteorder.h>
+
+#include "ufs_fs.h"
+#include "ufs.h"
+#include "swab.h"
+#include "util.h"
+
+/*
+ * Read cylinder group into cache. The memory space for ufs_cg_private_info
+ * structure is already allocated during ufs_read_super.
+ */
+static void ufs_read_cylinder (struct super_block * sb,
+	unsigned cgno, unsigned bitmap_nr)
+{
+	struct ufs_sb_info * sbi = UFS_SB(sb);
+	struct ufs_sb_private_info * uspi;
+	struct ufs_cg_private_info * ucpi;
+	struct ufs_cylinder_group * ucg;
+	unsigned i, j;
+
+	UFSD("ENTER, cgno %u, bitmap_nr %u\n", cgno, bitmap_nr);
+	uspi = sbi->s_uspi;
+	ucpi = sbi->s_ucpi[bitmap_nr];
+	ucg = (struct ufs_cylinder_group *)sbi->s_ucg[cgno]->b_data;
+
+	UCPI_UBH(ucpi)->fragment = ufs_cgcmin(cgno);
+	UCPI_UBH(ucpi)->count = uspi->s_cgsize >> sb->s_blocksize_bits;
+	/*
+	 * We have already the first fragment of cylinder group block in buffer
+	 */
+	UCPI_UBH(ucpi)->bh[0] = sbi->s_ucg[cgno];
+	for (i = 1; i < UCPI_UBH(ucpi)->count; i++)
+		if (!(UCPI_UBH(ucpi)->bh[i] = sb_bread(sb, UCPI_UBH(ucpi)->fragment + i)))
+			goto failed;
+	sbi->s_cgno[bitmap_nr] = cgno;
+			
+	ucpi->c_cgx	= fs32_to_cpu(sb, ucg->cg_cgx);
+	ucpi->c_ncyl	= fs16_to_cpu(sb, ucg->cg_ncyl);
+	ucpi->c_niblk	= fs16_to_cpu(sb, ucg->cg_niblk);
+	ucpi->c_ndblk	= fs32_to_cpu(sb, ucg->cg_ndblk);
+	ucpi->c_rotor	= fs32_to_cpu(sb, ucg->cg_rotor);
+	ucpi->c_frotor	= fs32_to_cpu(sb, ucg->cg_frotor);
+	ucpi->c_irotor	= fs32_to_cpu(sb, ucg->cg_irotor);
+	ucpi->c_btotoff	= fs32_to_cpu(sb, ucg->cg_btotoff);
+	ucpi->c_boff	= fs32_to_cpu(sb, ucg->cg_boff);
+	ucpi->c_iusedoff = fs32_to_cpu(sb, ucg->cg_iusedoff);
+	ucpi->c_freeoff	= fs32_to_cpu(sb, ucg->cg_freeoff);
+	ucpi->c_nextfreeoff = fs32_to_cpu(sb, ucg->cg_nextfreeoff);
+	ucpi->c_clustersumoff = fs32_to_cpu(sb, ucg->cg_u.cg_44.cg_clustersumoff);
+	ucpi->c_clusteroff = fs32_to_cpu(sb, ucg->cg_u.cg_44.cg_clusteroff);
+	ucpi->c_nclusterblks = fs32_to_cpu(sb, ucg->cg_u.cg_44.cg_nclusterblks);
+	UFSD("EXIT\n");
+	return;	
+	
+failed:
+	for (j = 1; j < i; j++)
+		brelse (sbi->s_ucg[j]);
+	sbi->s_cgno[bitmap_nr] = UFS_CGNO_EMPTY;
+	ufs_error (sb, "ufs_read_cylinder", "can't read cylinder group block %u", cgno);
+}
+
+/*
+ * Remove cylinder group from cache, doesn't release memory
+ * allocated for cylinder group (this is done at ufs_put_super only).
+ */
+void ufs_put_cylinder (struct super_block * sb, unsigned bitmap_nr)
+{
+	struct ufs_sb_info * sbi = UFS_SB(sb);
+	struct ufs_sb_private_info * uspi; 
+	struct ufs_cg_private_info * ucpi;
+	struct ufs_cylinder_group * ucg;
+	unsigned i;
+
+	UFSD("ENTER, bitmap_nr %u\n", bitmap_nr);
+
+	uspi = sbi->s_uspi;
+	if (sbi->s_cgno[bitmap_nr] == UFS_CGNO_EMPTY) {
+		UFSD("EXIT\n");
+		return;
+	}
+	ucpi = sbi->s_ucpi[bitmap_nr];
+	ucg = ubh_get_ucg(UCPI_UBH(ucpi));
+
+	if (uspi->s_ncg > UFS_MAX_GROUP_LOADED && bitmap_nr >= sbi->s_cg_loaded) {
+		ufs_panic (sb, "ufs_put_cylinder", "internal error");
+		return;
+	}
+	/*
+	 * rotor is not so important data, so we put it to disk 
+	 * at the end of working with cylinder
+	 */
+	ucg->cg_rotor = cpu_to_fs32(sb, ucpi->c_rotor);
+	ucg->cg_frotor = cpu_to_fs32(sb, ucpi->c_frotor);
+	ucg->cg_irotor = cpu_to_fs32(sb, ucpi->c_irotor);
+	ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
+	for (i = 1; i < UCPI_UBH(ucpi)->count; i++) {
+		brelse (UCPI_UBH(ucpi)->bh[i]);
+	}
+
+	sbi->s_cgno[bitmap_nr] = UFS_CGNO_EMPTY;
+	UFSD("EXIT\n");
+}
+
+/*
+ * Find cylinder group in cache and return it as pointer.
+ * If cylinder group is not in cache, we will load it from disk.
+ *
+ * The cache is managed by LRU algorithm. 
+ */
+struct ufs_cg_private_info * ufs_load_cylinder (
+	struct super_block * sb, unsigned cgno)
+{
+	struct ufs_sb_info * sbi = UFS_SB(sb);
+	struct ufs_sb_private_info * uspi;
+	struct ufs_cg_private_info * ucpi;
+	unsigned cg, i, j;
+
+	UFSD("ENTER, cgno %u\n", cgno);
+
+	uspi = sbi->s_uspi;
+	if (cgno >= uspi->s_ncg) {
+		ufs_panic (sb, "ufs_load_cylinder", "internal error, high number of cg");
+		return NULL;
+	}
+	/*
+	 * Cylinder group number cg it in cache and it was last used
+	 */
+	if (sbi->s_cgno[0] == cgno) {
+		UFSD("EXIT\n");
+		return sbi->s_ucpi[0];
+	}
+	/*
+	 * Number of cylinder groups is not higher than UFS_MAX_GROUP_LOADED
+	 */
+	if (uspi->s_ncg <= UFS_MAX_GROUP_LOADED) {
+		if (sbi->s_cgno[cgno] != UFS_CGNO_EMPTY) {
+			if (sbi->s_cgno[cgno] != cgno) {
+				ufs_panic (sb, "ufs_load_cylinder", "internal error, wrong number of cg in cache");
+				UFSD("EXIT (FAILED)\n");
+				return NULL;
+			}
+			else {
+				UFSD("EXIT\n");
+				return sbi->s_ucpi[cgno];
+			}
+		} else {
+			ufs_read_cylinder (sb, cgno, cgno);
+			UFSD("EXIT\n");
+			return sbi->s_ucpi[cgno];
+		}
+	}
+	/*
+	 * Cylinder group number cg is in cache but it was not last used, 
+	 * we will move to the first position
+	 */
+	for (i = 0; i < sbi->s_cg_loaded && sbi->s_cgno[i] != cgno; i++);
+	if (i < sbi->s_cg_loaded && sbi->s_cgno[i] == cgno) {
+		cg = sbi->s_cgno[i];
+		ucpi = sbi->s_ucpi[i];
+		for (j = i; j > 0; j--) {
+			sbi->s_cgno[j] = sbi->s_cgno[j-1];
+			sbi->s_ucpi[j] = sbi->s_ucpi[j-1];
+		}
+		sbi->s_cgno[0] = cg;
+		sbi->s_ucpi[0] = ucpi;
+	/*
+	 * Cylinder group number cg is not in cache, we will read it from disk
+	 * and put it to the first position
+	 */
+	} else {
+		if (sbi->s_cg_loaded < UFS_MAX_GROUP_LOADED)
+			sbi->s_cg_loaded++;
+		else
+			ufs_put_cylinder (sb, UFS_MAX_GROUP_LOADED-1);
+		ucpi = sbi->s_ucpi[sbi->s_cg_loaded - 1];
+		for (j = sbi->s_cg_loaded - 1; j > 0; j--) {
+			sbi->s_cgno[j] = sbi->s_cgno[j-1];
+			sbi->s_ucpi[j] = sbi->s_ucpi[j-1];
+		}
+		sbi->s_ucpi[0] = ucpi;
+		ufs_read_cylinder (sb, cgno, 0);
+	}
+	UFSD("EXIT\n");
+	return sbi->s_ucpi[0];
+}