From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- usr/include/.gitignore | 2 + usr/include/Makefile | 95 ++++++++++++++++++++++++ usr/include/headers_check.pl | 171 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 268 insertions(+) create mode 100644 usr/include/.gitignore create mode 100644 usr/include/Makefile create mode 100755 usr/include/headers_check.pl (limited to 'usr/include') diff --git a/usr/include/.gitignore b/usr/include/.gitignore new file mode 100644 index 000000000..17b0ba1bd --- /dev/null +++ b/usr/include/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +/*/ diff --git a/usr/include/Makefile b/usr/include/Makefile new file mode 100644 index 000000000..07796df0a --- /dev/null +++ b/usr/include/Makefile @@ -0,0 +1,95 @@ +# SPDX-License-Identifier: GPL-2.0-only + +# Unlike the kernel space, exported headers are written in standard C. +# - Forbid C++ style comments +# - Use '__inline__', '__asm__' instead of 'inline', 'asm' +# +# -std=c90 (equivalent to -ansi) catches the violation of those. +# We cannot go as far as adding -Wpedantic since it emits too many warnings. +UAPI_CFLAGS := -std=c90 -Wall -Werror=implicit-function-declaration + +# In theory, we do not care -m32 or -m64 for header compile tests. +# It is here just because CONFIG_CC_CAN_LINK is tested with -m32 or -m64. +UAPI_CFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) + +# USERCFLAGS might contain sysroot location for CC. +UAPI_CFLAGS += $(USERCFLAGS) + +override c_flags = $(UAPI_CFLAGS) -Wp,-MMD,$(depfile) -I $(obj) -I $(srctree)/usr/dummy-include + +# The following are excluded for now because they fail to build. +# +# Do not add a new header to the blacklist without legitimate reason. +# Please consider to fix the header first. +# +# Sorted alphabetically. +no-header-test += asm/ucontext.h +no-header-test += drm/vmwgfx_drm.h +no-header-test += linux/am437x-vpfe.h +no-header-test += linux/coda.h +no-header-test += linux/cyclades.h +no-header-test += linux/errqueue.h +no-header-test += linux/hdlc/ioctl.h +no-header-test += linux/ivtv.h +no-header-test += linux/matroxfb.h +no-header-test += linux/omap3isp.h +no-header-test += linux/omapfb.h +no-header-test += linux/patchkey.h +no-header-test += linux/phonet.h +no-header-test += linux/sctp.h +no-header-test += linux/sysctl.h +no-header-test += linux/usb/audio.h +no-header-test += linux/v4l2-mediabus.h +no-header-test += linux/v4l2-subdev.h +no-header-test += linux/videodev2.h +no-header-test += linux/vm_sockets.h +no-header-test += sound/asequencer.h +no-header-test += sound/asoc.h +no-header-test += sound/asound.h +no-header-test += sound/compress_offload.h +no-header-test += sound/emu10k1.h +no-header-test += sound/sfnt_info.h +no-header-test += xen/evtchn.h +no-header-test += xen/gntdev.h +no-header-test += xen/privcmd.h + +# More headers are broken in some architectures + +ifeq ($(SRCARCH),arc) +no-header-test += linux/bpf_perf_event.h +endif + +ifeq ($(SRCARCH),ia64) +no-header-test += asm/setup.h +no-header-test += asm/sigcontext.h +no-header-test += linux/if_bonding.h +endif + +ifeq ($(SRCARCH),powerpc) +no-header-test += linux/bpf_perf_event.h +endif + +ifeq ($(SRCARCH),sparc) +no-header-test += asm/uctx.h +no-header-test += asm/fbio.h +endif + +# asm-generic/*.h is used by asm/*.h, and should not be included directly +no-header-test += asm-generic/% + +always-y := $(patsubst $(obj)/%.h,%.hdrtest, $(shell find $(obj) -name '*.h' 2>/dev/null)) + +# Include the header twice to detect missing include guard. +quiet_cmd_hdrtest = HDRTEST $< + cmd_hdrtest = \ + $(CC) $(c_flags) -fsyntax-only -x c /dev/null \ + $(if $(filter-out $(no-header-test), $*.h), -include $< -include $<); \ + $(PERL) $(srctree)/$(src)/headers_check.pl $(obj) $(SRCARCH) $<; \ + touch $@ + +$(obj)/%.hdrtest: $(obj)/%.h FORCE + $(call if_changed_dep,hdrtest) + +# Since GNU Make 4.3, $(patsubst $(obj)/%/,%,$(wildcard $(obj)/*/)) works. +# To support older Make versions, use a somewhat tedious way. +clean-files += $(filter-out Makefile headers_check.pl, $(notdir $(wildcard $(obj)/*))) diff --git a/usr/include/headers_check.pl b/usr/include/headers_check.pl new file mode 100755 index 000000000..b6aec5e43 --- /dev/null +++ b/usr/include/headers_check.pl @@ -0,0 +1,171 @@ +#!/usr/bin/env perl +# SPDX-License-Identifier: GPL-2.0 +# +# headers_check.pl execute a number of trivial consistency checks +# +# Usage: headers_check.pl dir arch [files...] +# dir: dir to look for included files +# arch: architecture +# files: list of files to check +# +# The script reads the supplied files line by line and: +# +# 1) for each include statement it checks if the +# included file actually exists. +# Only include files located in asm* and linux* are checked. +# The rest are assumed to be system include files. +# +# 2) It is checked that prototypes does not use "extern" +# +# 3) Check for leaked CONFIG_ symbols + +use warnings; +use strict; +use File::Basename; + +my ($dir, $arch, @files) = @ARGV; + +my $ret = 0; +my $line; +my $lineno = 0; +my $filename; + +foreach my $file (@files) { + $filename = $file; + + open(my $fh, '<', $filename) + or die "$filename: $!\n"; + $lineno = 0; + while ($line = <$fh>) { + $lineno++; + &check_include(); + &check_asm_types(); + &check_sizetypes(); + &check_declarations(); + # Dropped for now. Too much noise &check_config(); + } + close $fh; +} +exit $ret; + +sub check_include +{ + if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) { + my $inc = $1; + my $found; + $found = stat($dir . "/" . $inc); + if (!$found) { + $inc =~ s#asm/#asm-$arch/#; + $found = stat($dir . "/" . $inc); + } + if (!$found) { + printf STDERR "$filename:$lineno: included file '$inc' is not exported\n"; + $ret = 1; + } + } +} + +sub check_declarations +{ + # soundcard.h is what it is + if ($line =~ m/^void seqbuf_dump\(void\);/) { + return; + } + # drm headers are being C++ friendly + if ($line =~ m/^extern "C"/) { + return; + } + if ($line =~ m/^(\s*extern|unsigned|char|short|int|long|void)\b/) { + printf STDERR "$filename:$lineno: " . + "userspace cannot reference function or " . + "variable defined in the kernel\n"; + } +} + +sub check_config +{ + if ($line =~ m/[^a-zA-Z0-9_]+CONFIG_([a-zA-Z0-9_]+)[^a-zA-Z0-9_]/) { + printf STDERR "$filename:$lineno: leaks CONFIG_$1 to userspace where it is not valid\n"; + } +} + +my $linux_asm_types; +sub check_asm_types +{ + if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) { + return; + } + if ($lineno == 1) { + $linux_asm_types = 0; + } elsif ($linux_asm_types >= 1) { + return; + } + if ($line =~ m/^\s*#\s*include\s+/) { + $linux_asm_types = 1; + printf STDERR "$filename:$lineno: " . + "include of is preferred over \n" + # Warn until headers are all fixed + #$ret = 1; + } +} + +my $linux_types; +my %import_stack = (); +sub check_include_typesh +{ + my $path = $_[0]; + my $import_path; + + my $fh; + my @file_paths = ($path, $dir . "/" . $path, dirname($filename) . "/" . $path); + for my $possible ( @file_paths ) { + if (not $import_stack{$possible} and open($fh, '<', $possible)) { + $import_path = $possible; + $import_stack{$import_path} = 1; + last; + } + } + if (eof $fh) { + return; + } + + my $line; + while ($line = <$fh>) { + if ($line =~ m/^\s*#\s*include\s+/) { + $linux_types = 1; + last; + } + if (my $included = ($line =~ /^\s*#\s*include\s+[<"](\S+)[>"]/)[0]) { + check_include_typesh($included); + } + } + close $fh; + delete $import_stack{$import_path}; +} + +sub check_sizetypes +{ + if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) { + return; + } + if ($lineno == 1) { + $linux_types = 0; + } elsif ($linux_types >= 1) { + return; + } + if ($line =~ m/^\s*#\s*include\s+/) { + $linux_types = 1; + return; + } + if (my $included = ($line =~ /^\s*#\s*include\s+[<"](\S+)[>"]/)[0]) { + check_include_typesh($included); + } + if ($line =~ m/__[us](8|16|32|64)\b/) { + printf STDERR "$filename:$lineno: " . + "found __[us]{8,16,32,64} type " . + "without #include \n"; + $linux_types = 2; + # Warn until headers are all fixed + #$ret = 1; + } +} -- cgit v1.2.3