FM / linux

/usr/src/linux-headers-5.15.0-190/include/linux/

/usr/src/linux-headers-5.15.0-190/include/linux

Name	Size	Mode	Actions
amba/	-	0755	rm
atomic/	-	0755	rm
avf/	-	0755	rm
bcma/	-	0755	rm
byteorder/	-	0755	rm
can/	-	0755	rm
ceph/	-	0755	rm
clk/	-	0755	rm
crush/	-	0755	rm
decompress/	-	0755	rm
device/	-	0755	rm
dma/	-	0755	rm
dsa/	-	0755	rm
extcon/	-	0755	rm
firmware/	-	0755	rm
fpga/	-	0755	rm
fsl/	-	0755	rm
gpio/	-	0755	rm
greybus/	-	0755	rm
hsi/	-	0755	rm
i3c/	-	0755	rm
iio/	-	0755	rm
input/	-	0755	rm
irqchip/	-	0755	rm
isdn/	-	0755	rm
lockd/	-	0755	rm
mailbox/	-	0755	rm
mdio/	-	0755	rm
mfd/	-	0755	rm
mlx4/	-	0755	rm
mlx5/	-	0755	rm
mmc/	-	0755	rm
mtd/	-	0755	rm
mux/	-	0755	rm
net/	-	0755	rm
netfilter/	-	0755	rm
netfilter_arp/	-	0755	rm
netfilter_bridge/	-	0755	rm
netfilter_ipv4/	-	0755	rm
netfilter_ipv6/	-	0755	rm
pcs/	-	0755	rm
perf/	-	0755	rm
phy/	-	0755	rm
pinctrl/	-	0755	rm
platform_data/	-	0755	rm
power/	-	0755	rm
qed/	-	0755	rm
raid/	-	0755	rm
regulator/	-	0755	rm
remoteproc/	-	0755	rm
reset/	-	0755	rm
rpmsg/	-	0755	rm
rtc/	-	0755	rm
sched/	-	0755	rm
soc/	-	0755	rm
soundwire/	-	0755	rm
spi/	-	0755	rm
ssb/	-	0755	rm
sunrpc/	-	0755	rm
surface_aggregator/	-	0755	rm
ulpi/	-	0755	rm
unaligned/	-	0755	rm
usb/	-	0755	rm
8250_pci.h	1038	0644	edit dl rm
a.out.h	354	0644	edit dl rm
acct.h	2551	0644	edit dl rm
acpi.h	40902	0644	edit dl rm
acpi_dma.h	3154	0644	edit dl rm
acpi_iort.h	2403	0644	edit dl rm
acpi_mdio.h	819	0644	edit dl rm
acpi_pmtmr.h	674	0644	edit dl rm
acpi_viot.h	478	0644	edit dl rm
adb.h	1832	0644	edit dl rm
adfs_fs.h	574	0644	edit dl rm
adreno-smmu-priv.h	2807	0644	edit dl rm
adxl.h	310	0644	edit dl rm
aer.h	1822	0644	edit dl rm
agpgart.h	3881	0644	edit dl rm
agp_backend.h	3534	0644	edit dl rm
ahci-remap.h	607	0644	edit dl rm
ahci_platform.h	1747	0644	edit dl rm
aio.h	651	0644	edit dl rm
alarmtimer.h	1990	0644	edit dl rm
alcor_pci.h	9043	0644	edit dl rm
align.h	552	0644	edit dl rm
altera_jtaguart.h	379	0644	edit dl rm
altera_uart.h	397	0644	edit dl rm
amd-iommu.h	6325	0644	edit dl rm
anon_inodes.h	670	0644	edit dl rm
apm-emulation.h	1599	0644	edit dl rm
apm_bios.h	2305	0644	edit dl rm
apple-gmux.h	918	0644	edit dl rm
apple_bl.h	498	0644	edit dl rm
arch_topology.h	2551	0644	edit dl rm
arm-cci.h	1390	0644	edit dl rm
arm-smccc.h	17382	0644	edit dl rm
armada-37xx-rwtm-mailbox.h	431	0644	edit dl rm
arm_ffa.h	7545	0644	edit dl rm
arm_sdei.h	2730	0644	edit dl rm
array_size.h	332	0644	edit dl rm
ascii85.h	555	0644	edit dl rm
asn1.h	1832	0644	edit dl rm
asn1_ber_bytecode.h	2576	0644	edit dl rm
asn1_decoder.h	468	0644	edit dl rm
asn1_encoder.h	1006	0644	edit dl rm
assoc_array.h	2949	0644	edit dl rm
assoc_array_priv.h	5423	0644	edit dl rm
async.h	4439	0644	edit dl rm
async_tx.h	6860	0644	edit dl rm
ata.h	33799	0644	edit dl rm
atalk.h	4586	0644	edit dl rm
ata_platform.h	749	0644	edit dl rm
ath9k_platform.h	1477	0644	edit dl rm
atm.h	287	0644	edit dl rm
atmdev.h	10477	0644	edit dl rm
atmel-isc-media.h	2115	0644	edit dl rm
atmel-mci.h	1429	0644	edit dl rm
atmel-ssc.h	9971	0644	edit dl rm
atmel_pdc.h	1295	0644	edit dl rm
atm_tcp.h	511	0644	edit dl rm
atomic.h	2644	0644	edit dl rm
attribute_container.h	2803	0644	edit dl rm
audit.h	19921	0644	edit dl rm
auto_dev-ioctl.h	296	0644	edit dl rm
auto_fs.h	278	0644	edit dl rm
auxiliary_bus.h	2539	0644	edit dl rm
auxvec.h	304	0644	edit dl rm
average.h	2481	0644	edit dl rm
backing-dev-defs.h	8753	0644	edit dl rm
backing-dev.h	12189	0644	edit dl rm
backlight.h	13447	0644	edit dl rm
badblocks.h	2188	0644	edit dl rm
balloon_compaction.h	5892	0644	edit dl rm
bcd.h	559	0644	edit dl rm
bch.h	2152	0644	edit dl rm
bcm47xx_nvram.h	1033	0644	edit dl rm
bcm47xx_sprom.h	616	0644	edit dl rm
bcm47xx_wdt.h	555	0644	edit dl rm
bcm963xx_nvram.h	3036	0644	edit dl rm
bcm963xx_tag.h	3685	0644	edit dl rm
binfmts.h	4683	0644	edit dl rm
bio.h	20108	0644	edit dl rm
bitfield.h	5460	0644	edit dl rm
bitmap.h	22664	0644	edit dl rm
bitops.h	8733	0644	edit dl rm
bitrev.h	2594	0644	edit dl rm
bits.h	1387	0644	edit dl rm
bit_spinlock.h	2360	0644	edit dl rm
blk-cgroup.h	22648	0644	edit dl rm
blk-crypto.h	4117	0644	edit dl rm
blk-mq-pci.h	269	0644	edit dl rm
blk-mq-rdma.h	273	0644	edit dl rm
blk-mq-virtio.h	293	0644	edit dl rm
blk-mq.h	19834	0644	edit dl rm
blk-pm.h	708	0644	edit dl rm
blkdev.h	58041	0644	edit dl rm
blkpg.h	436	0644	edit dl rm
blktrace_api.h	3858	0644	edit dl rm
blk_types.h	15669	0644	edit dl rm
blockgroup_lock.h	810	0644	edit dl rm
bma150.h	1286	0644	edit dl rm
bootconfig.h	8712	0644	edit dl rm
bootmem_info.h	1733	0644	edit dl rm
bottom_half.h	974	0644	edit dl rm
bpf-cgroup.h	18796	0644	edit dl rm
bpf-netns.h	1559	0644	edit dl rm
bpf.h	76212	0644	edit dl rm
bpfilter.h	791	0644	edit dl rm
bpfptr.h	2029	0644	edit dl rm
bpf_lirc.h	698	0644	edit dl rm
bpf_local_storage.h	5359	0644	edit dl rm
bpf_lsm.h	1456	0644	edit dl rm
bpf_trace.h	166	0644	edit dl rm
bpf_types.h	5536	0644	edit dl rm
bpf_verifier.h	20865	0644	edit dl rm
brcmphy.h	13994	0644	edit dl rm
bsearch.h	624	0644	edit dl rm
bsg-lib.h	1759	0644	edit dl rm
bsg.h	492	0644	edit dl rm
btf.h	7432	0644	edit dl rm
btf_ids.h	5463	0644	edit dl rm
btree-128.h	2737	0644	edit dl rm
btree-type.h	3991	0644	edit dl rm
btree.h	7000	0644	edit dl rm
btrfs.h	145	0644	edit dl rm
buffer_head.h	14814	0644	edit dl rm
bug.h	2220	0644	edit dl rm
build-salt.h	375	0644	edit dl rm
buildid.h	561	0644	edit dl rm
build_bug.h	2823	0644	edit dl rm
bvec.h	6319	0644	edit dl rm
c2port.h	1384	0644	edit dl rm
cache.h	2616	0644	edit dl rm
cacheinfo.h	3837	0644	edit dl rm
capability.h	8486	0644	edit dl rm
cb710.h	5490	0644	edit dl rm
cciss_ioctl.h	1053	0644	edit dl rm
ccp.h	18577	0644	edit dl rm
cc_platform.h	2378	0644	edit dl rm
cdev.h	845	0644	edit dl rm
cdrom.h	9268	0644	edit dl rm
cfag12864b.h	1509	0644	edit dl rm
cfi.h	1152	0644	edit dl rm
cgroup-defs.h	24815	0644	edit dl rm
cgroup.h	28840	0644	edit dl rm
cgroup_rdma.h	1206	0644	edit dl rm
cgroup_subsys.h	1259	0644	edit dl rm
circ_buf.h	1120	0644	edit dl rm
cleancache.h	3982	0644	edit dl rm
cleanup.h	4986	0644	edit dl rm
clk-provider.h	59330	0644	edit dl rm
clk.h	34418	0644	edit dl rm
clkdev.h	1322	0644	edit dl rm
clockchips.h	7445	0644	edit dl rm
clocksource.h	10227	0644	edit dl rm
clocksource_ids.h	247	0644	edit dl rm
cm4000_cs.h	199	0644	edit dl rm
cma.h	2004	0644	edit dl rm
cnt32_to_63.h	3545	0644	edit dl rm
cn_proc.h	1890	0644	edit dl rm
coda.h	2215	0644	edit dl rm
compaction.h	7319	0644	edit dl rm
compat.h	32122	0644	edit dl rm
compiler-clang.h	4150	0644	edit dl rm
compiler-gcc.h	5021	0644	edit dl rm
compiler-intel.h	949	0644	edit dl rm
compiler-version.h	517	0644	edit dl rm
compiler.h	8553	0644	edit dl rm
compiler_attributes.h	13557	0644	edit dl rm
compiler_types.h	11023	0644	edit dl rm
completion.h	4101	0644	edit dl rm
component.h	4163	0644	edit dl rm
configfs.h	8683	0644	edit dl rm
connector.h	3927	0644	edit dl rm
console.h	7758	0644	edit dl rm
consolemap.h	1076	0644	edit dl rm
console_struct.h	7253	0644	edit dl rm
const.h	421	0644	edit dl rm
container.h	610	0644	edit dl rm
context_tracking.h	3362	0644	edit dl rm
context_tracking_state.h	1616	0644	edit dl rm
cookie.h	1254	0644	edit dl rm
cordic.h	2132	0644	edit dl rm
coredump.h	1154	0644	edit dl rm
coresight-pmu.h	1355	0644	edit dl rm
coresight-stm.h	152	0644	edit dl rm
coresight.h	18449	0644	edit dl rm
counter.h	15318	0644	edit dl rm
count_zeros.h	1453	0644	edit dl rm
cper.h	16963	0644	edit dl rm
cpu.h	8485	0644	edit dl rm
cpufeature.h	1751	0644	edit dl rm
cpufreq.h	33539	0644	edit dl rm
cpuhotplug.h	16949	0644	edit dl rm
cpuidle.h	10516	0644	edit dl rm
cpuidle_haltpoll.h	312	0644	edit dl rm
cpumask.h	30089	0644	edit dl rm
cpuset.h	8351	0644	edit dl rm
cpu_cooling.h	1901	0644	edit dl rm
cpu_pm.h	2433	0644	edit dl rm
cpu_rmap.h	1721	0644	edit dl rm
crash_core.h	3465	0644	edit dl rm
crash_dump.h	4149	0644	edit dl rm
crc-ccitt.h	609	0644	edit dl rm
crc-itu-t.h	531	0644	edit dl rm
crc-t10dif.h	453	0644	edit dl rm
crc4.h	192	0644	edit dl rm
crc7.h	316	0644	edit dl rm
crc8.h	3747	0644	edit dl rm
crc16.h	540	0644	edit dl rm
crc32.h	2894	0644	edit dl rm
crc32c.h	331	0644	edit dl rm
crc32poly.h	610	0644	edit dl rm
crc64.h	280	0644	edit dl rm
cred.h	12804	0644	edit dl rm
crypto.h	27890	0644	edit dl rm
cs5535.h	6277	0644	edit dl rm
ctype.h	1912	0644	edit dl rm
cuda.h	613	0644	edit dl rm
damon.h	10601	0644	edit dl rm
dasd_mod.h	204	0644	edit dl rm
davinci_emac.h	1080	0644	edit dl rm
dax.h	6719	0644	edit dl rm
dca.h	1922	0644	edit dl rm
dcache.h	19076	0644	edit dl rm
dccp.h	10988	0644	edit dl rm
debugfs.h	12253	0644	edit dl rm
debugobjects.h	4085	0644	edit dl rm
debug_locks.h	1627	0644	edit dl rm
delay.h	2490	0644	edit dl rm
delayacct.h	5584	0644	edit dl rm
delayed_call.h	709	0644	edit dl rm
devcoredump.h	2266	0644	edit dl rm
devfreq-event.h	6095	0644	edit dl rm
devfreq.h	14370	0644	edit dl rm
devfreq_cooling.h	2763	0644	edit dl rm
device-mapper.h	19371	0644	edit dl rm
device.h	35226	0644	edit dl rm
device_cgroup.h	1609	0644	edit dl rm
devm-helpers.h	2740	0644	edit dl rm
devpts_fs.h	1156	0644	edit dl rm
dev_printk.h	9883	0644	edit dl rm
dfl.h	2435	0644	edit dl rm
digsig.h	1212	0644	edit dl rm
dim.h	9421	0644	edit dl rm
dio.h	11019	0644	edit dl rm
dirent.h	215	0644	edit dl rm
dlm.h	6005	0644	edit dl rm
dlm_plock.h	532	0644	edit dl rm
dm-bufio.h	4992	0644	edit dl rm
dm-dirty-log.h	4038	0644	edit dl rm
dm-io.h	1980	0644	edit dl rm
dm-kcopyd.h	3013	0644	edit dl rm
dm-region-hash.h	3182	0644	edit dl rm
dm9000.h	987	0644	edit dl rm
dma-buf-map.h	8318	0644	edit dl rm
dma-buf.h	20962	0644	edit dl rm
dma-direct.h	3681	0644	edit dl rm
dma-direction.h	407	0644	edit dl rm
dma-fence-array.h	2191	0644	edit dl rm
dma-fence-chain.h	3144	0644	edit dl rm
dma-fence.h	21357	0644	edit dl rm
dma-heap.h	1616	0644	edit dl rm
dma-iommu.h	2265	0644	edit dl rm
dma-map-ops.h	13197	0644	edit dl rm
dma-mapping.h	20596	0644	edit dl rm
dma-resv.h	12236	0644	edit dl rm
dmaengine.h	54851	0644	edit dl rm
dmapool.h	1832	0644	edit dl rm
dmar.h	7929	0644	edit dl rm
dmi.h	4512	0644	edit dl rm
dnotify.h	1044	0644	edit dl rm
dns_resolver.h	1390	0644	edit dl rm
dqblk_qtree.h	2238	0644	edit dl rm
dqblk_v1.h	327	0644	edit dl rm
dqblk_v2.h	406	0644	edit dl rm
drbd.h	10311	0644	edit dl rm
drbd_genl.h	22010	0644	edit dl rm
drbd_genl_api.h	1808	0644	edit dl rm
drbd_limits.h	8003	0644	edit dl rm
ds2782_battery.h	158	0644	edit dl rm
dtlk.h	3584	0644	edit dl rm
dtpm.h	1684	0644	edit dl rm
dw_apb_timer.h	1566	0644	edit dl rm
dynamic_debug.h	6471	0644	edit dl rm
dynamic_queue_limits.h	3812	0644	edit dl rm
earlycpio.h	359	0644	edit dl rm
ecryptfs.h	3915	0644	edit dl rm
edac.h	19924	0644	edit dl rm
edd.h	1077	0644	edit dl rm
eeprom_93cx6.h	2707	0644	edit dl rm
eeprom_93xx46.h	1062	0644	edit dl rm
efi-bgrt.h	644	0644	edit dl rm
efi.h	43038	0644	edit dl rm
efi_embedded_fw.h	1060	0644	edit dl rm
efs_vh.h	1585	0644	edit dl rm
eisa.h	3031	0644	edit dl rm
elevator.h	5653	0644	edit dl rm
elf-fdpic.h	2030	0644	edit dl rm
elf-randomize.h	583	0644	edit dl rm
elf.h	3030	0644	edit dl rm
elfcore-compat.h	1302	0644	edit dl rm
elfcore.h	4209	0644	edit dl rm
elfnote-lto.h	314	0644	edit dl rm
elfnote.h	3626	0644	edit dl rm
enclosure.h	4112	0644	edit dl rm
energy_model.h	8361	0644	edit dl rm
entry-common.h	17359	0644	edit dl rm
entry-kvm.h	2800	0644	edit dl rm
err.h	1527	0644	edit dl rm
errname.h	283	0644	edit dl rm
errno.h	1481	0644	edit dl rm
error-injection.h	607	0644	edit dl rm
errqueue.h	524	0644	edit dl rm
errseq.h	382	0644	edit dl rm
etherdevice.h	17607	0644	edit dl rm
ethtool.h	32505	0644	edit dl rm
ethtool_netlink.h	2029	0644	edit dl rm
eventfd.h	2336	0644	edit dl rm
eventpoll.h	2472	0644	edit dl rm
evm.h	3500	0644	edit dl rm
export.h	5394	0644	edit dl rm
exportfs.h	8421	0644	edit dl rm
ext2_fs.h	967	0644	edit dl rm
extable.h	1309	0644	edit dl rm
extcon-provider.h	3919	0644	edit dl rm
extcon.h	10399	0644	edit dl rm
f2fs_fs.h	19471	0644	edit dl rm
f75375s.h	541	0644	edit dl rm
falloc.h	1624	0644	edit dl rm
fanotify.h	4547	0644	edit dl rm
fault-inject-usercopy.h	496	0644	edit dl rm
fault-inject.h	1975	0644	edit dl rm
fb.h	28958	0644	edit dl rm
fbcon.h	2256	0644	edit dl rm
fcdevice.h	774	0644	edit dl rm
fcntl.h	1698	0644	edit dl rm
fd.h	490	0644	edit dl rm
fddidevice.h	833	0644	edit dl rm
fdtable.h	3571	0644	edit dl rm
fec.h	463	0644	edit dl rm
fiemap.h	713	0644	edit dl rm
file.h	3158	0644	edit dl rm
fileattr.h	1952	0644	edit dl rm
filter.h	43995	0644	edit dl rm
fips.h	303	0644	edit dl rm
firewire.h	13718	0644	edit dl rm
firmware-map.h	959	0644	edit dl rm
firmware.h	3348	0644	edit dl rm
fixp-arith.h	4290	0644	edit dl rm
flat.h	2629	0644	edit dl rm
flex_proportions.h	2881	0644	edit dl rm
font.h	1714	0644	edit dl rm
fortify-string.h	9329	0644	edit dl rm
freelist.h	3890	0644	edit dl rm
freezer.h	9193	0644	edit dl rm
frontswap.h	3118	0644	edit dl rm
fs.h	125506	0644	edit dl rm
fscache-cache.h	19025	0644	edit dl rm
fscache.h	30303	0644	edit dl rm
fscrypt.h	30622	0644	edit dl rm
fsi-occ.h	681	0644	edit dl rm
fsi-sbefifo.h	629	0644	edit dl rm
fsi.h	2318	0644	edit dl rm
fsl-diu-fb.h	3963	0644	edit dl rm
fsldma.h	202	0644	edit dl rm
fsl_devices.h	4261	0644	edit dl rm
fsl_hypervisor.h	2824	0644	edit dl rm
fsl_ifc.h	25063	0644	edit dl rm
fsnotify.h	10287	0644	edit dl rm
fsnotify_backend.h	30076	0644	edit dl rm
fsverity.h	6914	0644	edit dl rm
fs_context.h	8818	0644	edit dl rm
fs_enet_pd.h	3457	0644	edit dl rm
fs_parser.h	4543	0644	edit dl rm
fs_pin.h	539	0644	edit dl rm
fs_stack.h	811	0644	edit dl rm
fs_struct.h	1066	0644	edit dl rm
fs_types.h	2071	0644	edit dl rm
fs_uart_pd.h	1523	0644	edit dl rm
ftrace.h	35597	0644	edit dl rm
ftrace_irq.h	884	0644	edit dl rm
futex.h	2497	0644	edit dl rm
fwnode.h	7535	0644	edit dl rm
fwnode_mdio.h	858	0644	edit dl rm
gameport.h	5549	0644	edit dl rm
gcd.h	193	0644	edit dl rm
genalloc.h	7912	0644	edit dl rm
generic-radix-tree.h	6504	0644	edit dl rm
genetlink.h	589	0644	edit dl rm
genhd.h	9055	0644	edit dl rm
genl_magic_func.h	11809	0644	edit dl rm
genl_magic_struct.h	7793	0644	edit dl rm
getcpu.h	641	0644	edit dl rm
gfp.h	26892	0644	edit dl rm
glob.h	256	0644	edit dl rm
gnss.h	1601	0644	edit dl rm
goldfish.h	878	0644	edit dl rm
gpio-pxa.h	571	0644	edit dl rm
gpio.h	5423	0644	edit dl rm
gpio_keys.h	1782	0644	edit dl rm
greybus.h	4240	0644	edit dl rm
hardirq.h	3516	0644	edit dl rm
hash.h	3071	0644	edit dl rm
hashtable.h	6827	0644	edit dl rm
hdlc.h	3267	0644	edit dl rm
hdlcdrv.h	6468	0644	edit dl rm
hdmi.h	12705	0644	edit dl rm
hid-debug.h	1458	0644	edit dl rm
hid-roccat.h	484	0644	edit dl rm
hid-sensor-hub.h	9190	0644	edit dl rm
hid-sensor-ids.h	7617	0644	edit dl rm
hid.h	38923	0644	edit dl rm
hidden.h	966	0644	edit dl rm
hiddev.h	1458	0644	edit dl rm
hidraw.h	1146	0644	edit dl rm
highmem-internal.h	5239	0644	edit dl rm
highmem.h	9731	0644	edit dl rm
highuid.h	3194	0644	edit dl rm
hil.h	18857	0644	edit dl rm
hil_mlc.h	5248	0644	edit dl rm
hippidevice.h	1052	0644	edit dl rm
hmm.h	4168	0644	edit dl rm
host1x.h	10993	0644	edit dl rm
hpet.h	2615	0644	edit dl rm
hp_sdc.h	14352	0644	edit dl rm
hrtimer.h	16515	0644	edit dl rm
hrtimer_defs.h	660	0644	edit dl rm
htcpld.h	617	0644	edit dl rm
hugetlb.h	30606	0644	edit dl rm
hugetlb_cgroup.h	7241	0644	edit dl rm
hugetlb_inline.h	374	0644	edit dl rm
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Edit: /usr/src/linux-headers-5.15.0-190/include/linux/bpf.h (76212B)

/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
 */
#ifndef _LINUX_BPF_H
#define _LINUX_BPF_H 1

#include <uapi/linux/bpf.h>

#include <linux/workqueue.h>
#include <linux/file.h>
#include <linux/percpu.h>
#include <linux/err.h>
#include <linux/rbtree_latch.h>
#include <linux/numa.h>
#include <linux/mm_types.h>
#include <linux/wait.h>
#include <linux/refcount.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/kallsyms.h>
#include <linux/capability.h>
#include <linux/sched/mm.h>
#include <linux/slab.h>
#include <linux/percpu-refcount.h>
#include <linux/bpfptr.h>

struct bpf_verifier_env;
struct bpf_verifier_log;
struct perf_event;
struct bpf_prog;
struct bpf_prog_aux;
struct bpf_map;
struct sock;
struct seq_file;
struct btf;
struct btf_type;
struct exception_table_entry;
struct seq_operations;
struct bpf_iter_aux_info;
struct bpf_local_storage;
struct bpf_local_storage_map;
struct kobject;
struct mem_cgroup;
struct module;
struct bpf_func_state;

extern struct idr btf_idr;
extern spinlock_t btf_idr_lock;
extern struct kobject *btf_kobj;

typedef int (*bpf_iter_init_seq_priv_t)(void *private_data,
					struct bpf_iter_aux_info *aux);
typedef void (*bpf_iter_fini_seq_priv_t)(void *private_data);
struct bpf_iter_seq_info {
	const struct seq_operations *seq_ops;
	bpf_iter_init_seq_priv_t init_seq_private;
	bpf_iter_fini_seq_priv_t fini_seq_private;
	u32 seq_priv_size;
};

/* map is generic key/value storage optionally accessible by eBPF programs */
struct bpf_map_ops {
	/* funcs callable from userspace (via syscall) */
	int (*map_alloc_check)(union bpf_attr *attr);
	struct bpf_map *(*map_alloc)(union bpf_attr *attr);
	void (*map_release)(struct bpf_map *map, struct file *map_file);
	void (*map_free)(struct bpf_map *map);
	int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key);
	void (*map_release_uref)(struct bpf_map *map);
	void *(*map_lookup_elem_sys_only)(struct bpf_map *map, void *key);
	int (*map_lookup_batch)(struct bpf_map *map, const union bpf_attr *attr,
				union bpf_attr __user *uattr);
	int (*map_lookup_and_delete_elem)(struct bpf_map *map, void *key,
					  void *value, u64 flags);
	int (*map_lookup_and_delete_batch)(struct bpf_map *map,
					   const union bpf_attr *attr,
					   union bpf_attr __user *uattr);
	int (*map_update_batch)(struct bpf_map *map, const union bpf_attr *attr,
				union bpf_attr __user *uattr);
	int (*map_delete_batch)(struct bpf_map *map, const union bpf_attr *attr,
				union bpf_attr __user *uattr);

/* funcs callable from userspace and from eBPF programs */
	void *(*map_lookup_elem)(struct bpf_map *map, void *key);
	int (*map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags);
	int (*map_delete_elem)(struct bpf_map *map, void *key);
	int (*map_push_elem)(struct bpf_map *map, void *value, u64 flags);
	int (*map_pop_elem)(struct bpf_map *map, void *value);
	int (*map_peek_elem)(struct bpf_map *map, void *value);

/* funcs called by prog_array and perf_event_array map */
	void *(*map_fd_get_ptr)(struct bpf_map *map, struct file *map_file,
				int fd);
	/* If need_defer is true, the implementation should guarantee that
	 * the to-be-put element is still alive before the bpf program, which
	 * may manipulate it, exists.
	 */
	void (*map_fd_put_ptr)(struct bpf_map *map, void *ptr, bool need_defer);
	int (*map_gen_lookup)(struct bpf_map *map, struct bpf_insn *insn_buf);
	u32 (*map_fd_sys_lookup_elem)(void *ptr);
	void (*map_seq_show_elem)(struct bpf_map *map, void *key,
				  struct seq_file *m);
	int (*map_check_btf)(const struct bpf_map *map,
			     const struct btf *btf,
			     const struct btf_type *key_type,
			     const struct btf_type *value_type);

/* Prog poke tracking helpers. */
	int (*map_poke_track)(struct bpf_map *map, struct bpf_prog_aux *aux);
	void (*map_poke_untrack)(struct bpf_map *map, struct bpf_prog_aux *aux);
	void (*map_poke_run)(struct bpf_map *map, u32 key, struct bpf_prog *old,
			     struct bpf_prog *new);

/* Direct value access helpers. */
	int (*map_direct_value_addr)(const struct bpf_map *map,
				     u64 *imm, u32 off);
	int (*map_direct_value_meta)(const struct bpf_map *map,
				     u64 imm, u32 *off);
	int (*map_mmap)(struct bpf_map *map, struct vm_area_struct *vma);
	__poll_t (*map_poll)(struct bpf_map *map, struct file *filp,
			     struct poll_table_struct *pts);

/* Functions called by bpf_local_storage maps */
	int (*map_local_storage_charge)(struct bpf_local_storage_map *smap,
					void *owner, u32 size);
	void (*map_local_storage_uncharge)(struct bpf_local_storage_map *smap,
					   void *owner, u32 size);
	struct bpf_local_storage __rcu ** (*map_owner_storage_ptr)(void *owner);

/* Misc helpers.*/
	int (*map_redirect)(struct bpf_map *map, u32 ifindex, u64 flags);

/* map_meta_equal must be implemented for maps that can be
	 * used as an inner map.  It is a runtime check to ensure
	 * an inner map can be inserted to an outer map.
	 *
	 * Some properties of the inner map has been used during the
	 * verification time.  When inserting an inner map at the runtime,
	 * map_meta_equal has to ensure the inserting map has the same
	 * properties that the verifier has used earlier.
	 */
	bool (*map_meta_equal)(const struct bpf_map *meta0,
			       const struct bpf_map *meta1);

int (*map_set_for_each_callback_args)(struct bpf_verifier_env *env,
					      struct bpf_func_state *caller,
					      struct bpf_func_state *callee);
	int (*map_for_each_callback)(struct bpf_map *map, void *callback_fn,
				     void *callback_ctx, u64 flags);

/* BTF name and id of struct allocated by map_alloc */
	const char * const map_btf_name;
	int *map_btf_id;

/* bpf_iter info used to open a seq_file */
	const struct bpf_iter_seq_info *iter_seq_info;
};

enum {
	/* Support at most 11 fields in a BTF type */
	BTF_FIELDS_MAX	   = 11,
};

enum btf_field_type {
	BPF_SPIN_LOCK  = (1 << 0),
	BPF_TIMER      = (1 << 1),
	BPF_KPTR_UNREF = (1 << 2),
	BPF_KPTR_REF   = (1 << 3),
	BPF_KPTR_PERCPU = (1 << 4),
	BPF_KPTR       = BPF_KPTR_UNREF | BPF_KPTR_REF | BPF_KPTR_PERCPU,
	BPF_LIST_HEAD  = (1 << 5),
	BPF_LIST_NODE  = (1 << 6),
	BPF_RB_ROOT    = (1 << 7),
	BPF_RB_NODE    = (1 << 8),
	BPF_GRAPH_NODE = BPF_RB_NODE | BPF_LIST_NODE,
	BPF_GRAPH_ROOT = BPF_RB_ROOT | BPF_LIST_HEAD,
	BPF_REFCOUNT   = (1 << 9),
	BPF_WORKQUEUE  = (1 << 10),
	BPF_UPTR       = (1 << 11),
	BPF_RES_SPIN_LOCK = (1 << 12),
};

enum bpf_cgroup_storage_type {
	BPF_CGROUP_STORAGE_SHARED,
	BPF_CGROUP_STORAGE_PERCPU,
	__BPF_CGROUP_STORAGE_MAX
#define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX
};

#ifdef CONFIG_CGROUP_BPF
# define for_each_cgroup_storage_type(stype) \
	for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
#else
# define for_each_cgroup_storage_type(stype) for (; false; )
#endif /* CONFIG_CGROUP_BPF */

typedef void (*btf_dtor_kfunc_t)(void *);

struct btf_field_kptr {
	struct btf *btf;
	struct module *module;
	/* dtor used if btf_is_kernel(btf), otherwise the type is
	 * program-allocated, dtor is NULL,  and __bpf_obj_drop_impl is used
	 */
	btf_dtor_kfunc_t dtor;
	u32 btf_id;
};

struct btf_field_graph_root {
	struct btf *btf;
	u32 value_btf_id;
	u32 node_offset;
	struct btf_record *value_rec;
};

struct btf_field {
	u32 offset;
	u32 size;
	enum btf_field_type type;
	union {
		struct btf_field_kptr kptr;
		struct btf_field_graph_root graph_root;
	};
};

struct btf_record {
	u32 cnt;
	u32 field_mask;
	int spin_lock_off;
	int res_spin_lock_off;
	int timer_off;
	int wq_off;
	int refcount_off;
	struct btf_field fields[];
};

/* Non-opaque version of bpf_rb_node in uapi/linux/bpf.h */
struct bpf_rb_node_kern {
	struct rb_node rb_node;
	void *owner;
} __attribute__((aligned(8)));

/* Non-opaque version of bpf_list_node in uapi/linux/bpf.h */
struct bpf_list_node_kern {
	struct list_head list_head;
	void *owner;
} __attribute__((aligned(8)));

/* 'Ownership' of program-containing map is claimed by the first program
 * that is going to use this map or by the first program which FD is
 * stored in the map to make sure that all callers and callees have the
 * same prog type, JITed flag and xdp_has_frags flag.
 */
struct bpf_map_owner {
	enum bpf_prog_type type;
	bool jited;
	bool xdp_has_frags;
	u64 storage_cookie[MAX_BPF_CGROUP_STORAGE_TYPE];
	const struct btf_type *attach_func_proto;
};

struct bpf_map {
	/* The first two cachelines with read-mostly members of which some
	 * are also accessed in fast-path (e.g. ops, max_entries).
	 */
	const struct bpf_map_ops *ops ____cacheline_aligned;
	struct bpf_map *inner_map_meta;
#ifdef CONFIG_SECURITY
	void *security;
#endif
	enum bpf_map_type map_type;
	u32 key_size;
	u32 value_size;
	u32 max_entries;
	u32 map_flags;
	int spin_lock_off; /* >=0 valid offset, <0 error */
	int timer_off; /* >=0 valid offset, <0 error */
	u32 id;
	int numa_node;
	u32 btf_key_type_id;
	u32 btf_value_type_id;
	struct btf *btf;
#ifdef CONFIG_MEMCG_KMEM
	struct mem_cgroup *memcg;
#endif
	char name[BPF_OBJ_NAME_LEN];
	u32 btf_vmlinux_value_type_id;
	bool bypass_spec_v1;
	bool frozen; /* write-once; write-protected by freeze_mutex */
	/* 22 bytes hole */

/* The 3rd and 4th cacheline with misc members to avoid false sharing
	 * particularly with refcounting.
	 */
	atomic64_t refcnt ____cacheline_aligned;
	atomic64_t usercnt;
	/* rcu is used before freeing and work is only used during freeing */
	union {
		struct work_struct work;
		struct rcu_head rcu;
	};
	struct mutex freeze_mutex;
	atomic64_t writecnt;
	spinlock_t owner_lock;
	struct bpf_map_owner *owner;
	bool free_after_mult_rcu_gp;
	u64 cookie; /* write-once */
};

static inline bool map_value_has_spin_lock(const struct bpf_map *map)
{
	return map->spin_lock_off >= 0;
}

static inline bool map_value_has_timer(const struct bpf_map *map)
{
	return map->timer_off >= 0;
}

static inline void check_and_init_map_value(struct bpf_map *map, void *dst)
{
	if (unlikely(map_value_has_spin_lock(map)))
		memset(dst + map->spin_lock_off, 0, sizeof(struct bpf_spin_lock));
	if (unlikely(map_value_has_timer(map)))
		memset(dst + map->timer_off, 0, sizeof(struct bpf_timer));
}

/* copy everything but bpf_spin_lock and bpf_timer. There could be one of each. */
static inline void copy_map_value(struct bpf_map *map, void *dst, void *src)
{
	u32 s_off = 0, s_sz = 0, t_off = 0, t_sz = 0;

if (unlikely(map_value_has_spin_lock(map))) {
		s_off = map->spin_lock_off;
		s_sz = sizeof(struct bpf_spin_lock);
	}
	if (unlikely(map_value_has_timer(map))) {
		t_off = map->timer_off;
		t_sz = sizeof(struct bpf_timer);
	}

if (unlikely(s_sz || t_sz)) {
		if (s_off < t_off || !s_sz) {
			swap(s_off, t_off);
			swap(s_sz, t_sz);
		}
		memcpy(dst, src, t_off);
		memcpy(dst + t_off + t_sz,
		       src + t_off + t_sz,
		       s_off - t_off - t_sz);
		memcpy(dst + s_off + s_sz,
		       src + s_off + s_sz,
		       map->value_size - s_off - s_sz);
	} else {
		memcpy(dst, src, map->value_size);
	}
}
void copy_map_value_locked(struct bpf_map *map, void *dst, void *src,
			   bool lock_src);
void bpf_timer_cancel_and_free(void *timer);
int bpf_obj_name_cpy(char *dst, const char *src, unsigned int size);

struct bpf_offload_dev;
struct bpf_offloaded_map;

struct bpf_map_dev_ops {
	int (*map_get_next_key)(struct bpf_offloaded_map *map,
				void *key, void *next_key);
	int (*map_lookup_elem)(struct bpf_offloaded_map *map,
			       void *key, void *value);
	int (*map_update_elem)(struct bpf_offloaded_map *map,
			       void *key, void *value, u64 flags);
	int (*map_delete_elem)(struct bpf_offloaded_map *map, void *key);
};

struct bpf_offloaded_map {
	struct bpf_map map;
	struct net_device *netdev;
	const struct bpf_map_dev_ops *dev_ops;
	void *dev_priv;
	struct list_head offloads;
};

static inline struct bpf_offloaded_map *map_to_offmap(struct bpf_map *map)
{
	return container_of(map, struct bpf_offloaded_map, map);
}

static inline bool bpf_map_offload_neutral(const struct bpf_map *map)
{
	return map->map_type == BPF_MAP_TYPE_PERF_EVENT_ARRAY;
}

static inline bool bpf_map_support_seq_show(const struct bpf_map *map)
{
	return (map->btf_value_type_id || map->btf_vmlinux_value_type_id) &&
		map->ops->map_seq_show_elem;
}

int map_check_no_btf(const struct bpf_map *map,
		     const struct btf *btf,
		     const struct btf_type *key_type,
		     const struct btf_type *value_type);

bool bpf_map_meta_equal(const struct bpf_map *meta0,
			const struct bpf_map *meta1);

extern const struct bpf_map_ops bpf_map_offload_ops;

/* bpf_type_flag contains a set of flags that are applicable to the values of
 * arg_type, ret_type and reg_type. For example, a pointer value may be null,
 * or a memory is read-only. We classify types into two categories: base types
 * and extended types. Extended types are base types combined with a type flag.
 *
 * Currently there are no more than 32 base types in arg_type, ret_type and
 * reg_types.
 */
#define BPF_BASE_TYPE_BITS	8

enum bpf_type_flag {
	/* PTR may be NULL. */
	PTR_MAYBE_NULL		= BIT(0 + BPF_BASE_TYPE_BITS),

/* MEM is read-only. When applied on bpf_arg, it indicates the arg is
	 * compatible with both mutable and immutable memory.
	 */
	MEM_RDONLY		= BIT(1 + BPF_BASE_TYPE_BITS),

/* MEM was "allocated" from a different helper, and cannot be mixed
	 * with regular non-MEM_ALLOC'ed MEM types.
	 */
	MEM_ALLOC		= BIT(2 + BPF_BASE_TYPE_BITS),

__BPF_TYPE_LAST_FLAG	= MEM_ALLOC,
};

/* Max number of base types. */
#define BPF_BASE_TYPE_LIMIT	(1UL << BPF_BASE_TYPE_BITS)

/* Max number of all types. */
#define BPF_TYPE_LIMIT		(__BPF_TYPE_LAST_FLAG | (__BPF_TYPE_LAST_FLAG - 1))

/* function argument constraints */
enum bpf_arg_type {
	ARG_DONTCARE = 0,	/* unused argument in helper function */

/* the following constraints used to prototype
	 * bpf_map_lookup/update/delete_elem() functions
	 */
	ARG_CONST_MAP_PTR,	/* const argument used as pointer to bpf_map */
	ARG_PTR_TO_MAP_KEY,	/* pointer to stack used as map key */
	ARG_PTR_TO_MAP_VALUE,	/* pointer to stack used as map value */
	ARG_PTR_TO_UNINIT_MAP_VALUE,	/* pointer to valid memory used to store a map value */

/* the following constraints used to prototype bpf_memcmp() and other
	 * functions that access data on eBPF program stack
	 */
	ARG_PTR_TO_MEM,		/* pointer to valid memory (stack, packet, map value) */
	ARG_PTR_TO_UNINIT_MEM,	/* pointer to memory does not need to be initialized,
				 * helper function must fill all bytes or clear
				 * them in error case.
				 */

ARG_CONST_SIZE,		/* number of bytes accessed from memory */
	ARG_CONST_SIZE_OR_ZERO,	/* number of bytes accessed from memory or 0 */

ARG_PTR_TO_CTX,		/* pointer to context */
	ARG_ANYTHING,		/* any (initialized) argument is ok */
	ARG_PTR_TO_SPIN_LOCK,	/* pointer to bpf_spin_lock */
	ARG_PTR_TO_SOCK_COMMON,	/* pointer to sock_common */
	ARG_PTR_TO_INT,		/* pointer to int */
	ARG_PTR_TO_LONG,	/* pointer to long */
	ARG_PTR_TO_SOCKET,	/* pointer to bpf_sock (fullsock) */
	ARG_PTR_TO_BTF_ID,	/* pointer to in-kernel struct */
	ARG_PTR_TO_ALLOC_MEM,	/* pointer to dynamically allocated memory */
	ARG_CONST_ALLOC_SIZE_OR_ZERO,	/* number of allocated bytes requested */
	ARG_PTR_TO_BTF_ID_SOCK_COMMON,	/* pointer to in-kernel sock_common or bpf-mirrored bpf_sock */
	ARG_PTR_TO_PERCPU_BTF_ID,	/* pointer to in-kernel percpu type */
	ARG_PTR_TO_FUNC,	/* pointer to a bpf program function */
	ARG_PTR_TO_STACK,	/* pointer to stack */
	ARG_PTR_TO_CONST_STR,	/* pointer to a null terminated read-only string */
	ARG_PTR_TO_TIMER,	/* pointer to bpf_timer */
	__BPF_ARG_TYPE_MAX,

/* Extended arg_types. */
	ARG_PTR_TO_MAP_VALUE_OR_NULL	= PTR_MAYBE_NULL | ARG_PTR_TO_MAP_VALUE,
	ARG_PTR_TO_MEM_OR_NULL		= PTR_MAYBE_NULL | ARG_PTR_TO_MEM,
	ARG_PTR_TO_CTX_OR_NULL		= PTR_MAYBE_NULL | ARG_PTR_TO_CTX,
	ARG_PTR_TO_SOCKET_OR_NULL	= PTR_MAYBE_NULL | ARG_PTR_TO_SOCKET,
	ARG_PTR_TO_ALLOC_MEM_OR_NULL	= PTR_MAYBE_NULL | ARG_PTR_TO_ALLOC_MEM,
	ARG_PTR_TO_STACK_OR_NULL	= PTR_MAYBE_NULL | ARG_PTR_TO_STACK,

/* This must be the last entry. Its purpose is to ensure the enum is
	 * wide enough to hold the higher bits reserved for bpf_type_flag.
	 */
	__BPF_ARG_TYPE_LIMIT	= BPF_TYPE_LIMIT,
};
static_assert(__BPF_ARG_TYPE_MAX <= BPF_BASE_TYPE_LIMIT);

/* type of values returned from helper functions */
enum bpf_return_type {
	RET_INTEGER,			/* function returns integer */
	RET_VOID,			/* function doesn't return anything */
	RET_PTR_TO_MAP_VALUE,		/* returns a pointer to map elem value */
	RET_PTR_TO_SOCKET,		/* returns a pointer to a socket */
	RET_PTR_TO_TCP_SOCK,		/* returns a pointer to a tcp_sock */
	RET_PTR_TO_SOCK_COMMON,		/* returns a pointer to a sock_common */
	RET_PTR_TO_ALLOC_MEM,		/* returns a pointer to dynamically allocated memory */
	RET_PTR_TO_MEM_OR_BTF_ID,	/* returns a pointer to a valid memory or a btf_id */
	RET_PTR_TO_BTF_ID,		/* returns a pointer to a btf_id */
	__BPF_RET_TYPE_MAX,

/* Extended ret_types. */
	RET_PTR_TO_MAP_VALUE_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_MAP_VALUE,
	RET_PTR_TO_SOCKET_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_SOCKET,
	RET_PTR_TO_TCP_SOCK_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_TCP_SOCK,
	RET_PTR_TO_SOCK_COMMON_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_SOCK_COMMON,
	RET_PTR_TO_ALLOC_MEM_OR_NULL	= PTR_MAYBE_NULL | MEM_ALLOC | RET_PTR_TO_ALLOC_MEM,
	RET_PTR_TO_BTF_ID_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_BTF_ID,

/* This must be the last entry. Its purpose is to ensure the enum is
	 * wide enough to hold the higher bits reserved for bpf_type_flag.
	 */
	__BPF_RET_TYPE_LIMIT	= BPF_TYPE_LIMIT,
};
static_assert(__BPF_RET_TYPE_MAX <= BPF_BASE_TYPE_LIMIT);

/* eBPF function prototype used by verifier to allow BPF_CALLs from eBPF programs
 * to in-kernel helper functions and for adjusting imm32 field in BPF_CALL
 * instructions after verifying
 */
struct bpf_func_proto {
	u64 (*func)(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);
	bool gpl_only;
	bool pkt_access;
	enum bpf_return_type ret_type;
	union {
		struct {
			enum bpf_arg_type arg1_type;
			enum bpf_arg_type arg2_type;
			enum bpf_arg_type arg3_type;
			enum bpf_arg_type arg4_type;
			enum bpf_arg_type arg5_type;
		};
		enum bpf_arg_type arg_type[5];
	};
	union {
		struct {
			u32 *arg1_btf_id;
			u32 *arg2_btf_id;
			u32 *arg3_btf_id;
			u32 *arg4_btf_id;
			u32 *arg5_btf_id;
		};
		u32 *arg_btf_id[5];
	};
	int *ret_btf_id; /* return value btf_id */
	bool (*allowed)(const struct bpf_prog *prog);
};

/* bpf_context is intentionally undefined structure. Pointer to bpf_context is
 * the first argument to eBPF programs.
 * For socket filters: 'struct bpf_context *' == 'struct sk_buff *'
 */
struct bpf_context;

enum bpf_access_type {
	BPF_READ = 1,
	BPF_WRITE = 2
};

/* types of values stored in eBPF registers */
/* Pointer types represent:
 * pointer
 * pointer + imm
 * pointer + (u16) var
 * pointer + (u16) var + imm
 * if (range > 0) then [ptr, ptr + range - off) is safe to access
 * if (id > 0) means that some 'var' was added
 * if (off > 0) means that 'imm' was added
 */
enum bpf_reg_type {
	NOT_INIT = 0,		 /* nothing was written into register */
	SCALAR_VALUE,		 /* reg doesn't contain a valid pointer */
	PTR_TO_CTX,		 /* reg points to bpf_context */
	CONST_PTR_TO_MAP,	 /* reg points to struct bpf_map */
	PTR_TO_MAP_VALUE,	 /* reg points to map element value */
	PTR_TO_MAP_KEY,		 /* reg points to a map element key */
	PTR_TO_STACK,		 /* reg == frame_pointer + offset */
	PTR_TO_PACKET_META,	 /* skb->data - meta_len */
	PTR_TO_PACKET,		 /* reg points to skb->data */
	PTR_TO_PACKET_END,	 /* skb->data + headlen */
	PTR_TO_FLOW_KEYS,	 /* reg points to bpf_flow_keys */
	PTR_TO_SOCKET,		 /* reg points to struct bpf_sock */
	PTR_TO_SOCK_COMMON,	 /* reg points to sock_common */
	PTR_TO_TCP_SOCK,	 /* reg points to struct tcp_sock */
	PTR_TO_TP_BUFFER,	 /* reg points to a writable raw tp's buffer */
	PTR_TO_XDP_SOCK,	 /* reg points to struct xdp_sock */
	/* PTR_TO_BTF_ID points to a kernel struct that does not need
	 * to be null checked by the BPF program. This does not imply the
	 * pointer is _not_ null and in practice this can easily be a null
	 * pointer when reading pointer chains. The assumption is program
	 * context will handle null pointer dereference typically via fault
	 * handling. The verifier must keep this in mind and can make no
	 * assumptions about null or non-null when doing branch analysis.
	 * Further, when passed into helpers the helpers can not, without
	 * additional context, assume the value is non-null.
	 */
	PTR_TO_BTF_ID,
	/* PTR_TO_BTF_ID_OR_NULL points to a kernel struct that has not
	 * been checked for null. Used primarily to inform the verifier
	 * an explicit null check is required for this struct.
	 */
	PTR_TO_MEM,		 /* reg points to valid memory region */
	PTR_TO_BUF,		 /* reg points to a read/write buffer */
	PTR_TO_PERCPU_BTF_ID,	 /* reg points to a percpu kernel variable */
	PTR_TO_FUNC,		 /* reg points to a bpf program function */
	__BPF_REG_TYPE_MAX,

/* Extended reg_types. */
	PTR_TO_MAP_VALUE_OR_NULL	= PTR_MAYBE_NULL | PTR_TO_MAP_VALUE,
	PTR_TO_SOCKET_OR_NULL		= PTR_MAYBE_NULL | PTR_TO_SOCKET,
	PTR_TO_SOCK_COMMON_OR_NULL	= PTR_MAYBE_NULL | PTR_TO_SOCK_COMMON,
	PTR_TO_TCP_SOCK_OR_NULL		= PTR_MAYBE_NULL | PTR_TO_TCP_SOCK,
	PTR_TO_BTF_ID_OR_NULL		= PTR_MAYBE_NULL | PTR_TO_BTF_ID,

/* This must be the last entry. Its purpose is to ensure the enum is
	 * wide enough to hold the higher bits reserved for bpf_type_flag.
	 */
	__BPF_REG_TYPE_LIMIT	= BPF_TYPE_LIMIT,
};
static_assert(__BPF_REG_TYPE_MAX <= BPF_BASE_TYPE_LIMIT);

/* The information passed from prog-specific *_is_valid_access
 * back to the verifier.
 */
struct bpf_insn_access_aux {
	enum bpf_reg_type reg_type;
	union {
		int ctx_field_size;
		struct {
			struct btf *btf;
			u32 btf_id;
		};
	};
	struct bpf_verifier_log *log; /* for verbose logs */
};

static inline void
bpf_ctx_record_field_size(struct bpf_insn_access_aux *aux, u32 size)
{
	aux->ctx_field_size = size;
}

static inline bool bpf_pseudo_func(const struct bpf_insn *insn)
{
	return insn->code == (BPF_LD | BPF_IMM | BPF_DW) &&
	       insn->src_reg == BPF_PSEUDO_FUNC;
}

struct bpf_prog_ops {
	int (*test_run)(struct bpf_prog *prog, const union bpf_attr *kattr,
			union bpf_attr __user *uattr);
};

struct bpf_verifier_ops {
	/* return eBPF function prototype for verification */
	const struct bpf_func_proto *
	(*get_func_proto)(enum bpf_func_id func_id,
			  const struct bpf_prog *prog);

/* return true if 'size' wide access at offset 'off' within bpf_context
	 * with 'type' (read or write) is allowed
	 */
	bool (*is_valid_access)(int off, int size, enum bpf_access_type type,
				const struct bpf_prog *prog,
				struct bpf_insn_access_aux *info);
	int (*gen_prologue)(struct bpf_insn *insn, bool direct_write,
			    const struct bpf_prog *prog);
	int (*gen_ld_abs)(const struct bpf_insn *orig,
			  struct bpf_insn *insn_buf);
	u32 (*convert_ctx_access)(enum bpf_access_type type,
				  const struct bpf_insn *src,
				  struct bpf_insn *dst,
				  struct bpf_prog *prog, u32 *target_size);
	int (*btf_struct_access)(struct bpf_verifier_log *log,
				 const struct btf *btf,
				 const struct btf_type *t, int off, int size,
				 enum bpf_access_type atype,
				 u32 *next_btf_id);
	bool (*check_kfunc_call)(u32 kfunc_btf_id);
};

struct bpf_prog_offload_ops {
	/* verifier basic callbacks */
	int (*insn_hook)(struct bpf_verifier_env *env,
			 int insn_idx, int prev_insn_idx);
	int (*finalize)(struct bpf_verifier_env *env);
	/* verifier optimization callbacks (called after .finalize) */
	int (*replace_insn)(struct bpf_verifier_env *env, u32 off,
			    struct bpf_insn *insn);
	int (*remove_insns)(struct bpf_verifier_env *env, u32 off, u32 cnt);
	/* program management callbacks */
	int (*prepare)(struct bpf_prog *prog);
	int (*translate)(struct bpf_prog *prog);
	void (*destroy)(struct bpf_prog *prog);
};

struct bpf_prog_offload {
	struct bpf_prog		*prog;
	struct net_device	*netdev;
	struct bpf_offload_dev	*offdev;
	void			*dev_priv;
	struct list_head	offloads;
	bool			dev_state;
	bool			opt_failed;
	void			*jited_image;
	u32			jited_len;
};

/* The longest tracepoint has 12 args.
 * See include/trace/bpf_probe.h
 */
#define MAX_BPF_FUNC_ARGS 12

/* The maximum number of arguments passed through registers
 * a single function may have.
 */
#define MAX_BPF_FUNC_REG_ARGS 5

struct btf_func_model {
	u8 ret_size;
	u8 nr_args;
	u8 arg_size[MAX_BPF_FUNC_ARGS];
};

/* Restore arguments before returning from trampoline to let original function
 * continue executing. This flag is used for fentry progs when there are no
 * fexit progs.
 */
#define BPF_TRAMP_F_RESTORE_REGS	BIT(0)
/* Call original function after fentry progs, but before fexit progs.
 * Makes sense for fentry/fexit, normal calls and indirect calls.
 */
#define BPF_TRAMP_F_CALL_ORIG		BIT(1)
/* Skip current frame and return to parent.  Makes sense for fentry/fexit
 * programs only. Should not be used with normal calls and indirect calls.
 */
#define BPF_TRAMP_F_SKIP_FRAME		BIT(2)
/* Store IP address of the caller on the trampoline stack,
 * so it's available for trampoline's programs.
 */
#define BPF_TRAMP_F_IP_ARG		BIT(3)
/* Return the return value of fentry prog. Only used by bpf_struct_ops. */
#define BPF_TRAMP_F_RET_FENTRY_RET	BIT(4)

/* Each call __bpf_prog_enter + call bpf_func + call __bpf_prog_exit is ~50
 * bytes on x86.  Pick a number to fit into BPF_IMAGE_SIZE / 2
 */
#define BPF_MAX_TRAMP_PROGS 38

struct bpf_tramp_progs {
	struct bpf_prog *progs[BPF_MAX_TRAMP_PROGS];
	int nr_progs;
};

/* Different use cases for BPF trampoline:
 * 1. replace nop at the function entry (kprobe equivalent)
 *    flags = BPF_TRAMP_F_RESTORE_REGS
 *    fentry = a set of programs to run before returning from trampoline
 *
 * 2. replace nop at the function entry (kprobe + kretprobe equivalent)
 *    flags = BPF_TRAMP_F_CALL_ORIG | BPF_TRAMP_F_SKIP_FRAME
 *    orig_call = fentry_ip + MCOUNT_INSN_SIZE
 *    fentry = a set of program to run before calling original function
 *    fexit = a set of program to run after original function
 *
 * 3. replace direct call instruction anywhere in the function body
 *    or assign a function pointer for indirect call (like tcp_congestion_ops->cong_avoid)
 *    With flags = 0
 *      fentry = a set of programs to run before returning from trampoline
 *    With flags = BPF_TRAMP_F_CALL_ORIG
 *      orig_call = original callback addr or direct function addr
 *      fentry = a set of program to run before calling original function
 *      fexit = a set of program to run after original function
 */
struct bpf_tramp_image;
int arch_prepare_bpf_trampoline(struct bpf_tramp_image *tr, void *image, void *image_end,
				const struct btf_func_model *m, u32 flags,
				struct bpf_tramp_progs *tprogs,
				void *orig_call);
/* these two functions are called from generated trampoline */
u64 notrace __bpf_prog_enter(struct bpf_prog *prog);
void notrace __bpf_prog_exit(struct bpf_prog *prog, u64 start);
u64 notrace __bpf_prog_enter_sleepable(struct bpf_prog *prog);
void notrace __bpf_prog_exit_sleepable(struct bpf_prog *prog, u64 start);
void notrace __bpf_tramp_enter(struct bpf_tramp_image *tr);
void notrace __bpf_tramp_exit(struct bpf_tramp_image *tr);

struct bpf_ksym {
	unsigned long		 start;
	unsigned long		 end;
	char			 name[KSYM_NAME_LEN];
	struct list_head	 lnode;
	struct latch_tree_node	 tnode;
	bool			 prog;
};

enum bpf_tramp_prog_type {
	BPF_TRAMP_FENTRY,
	BPF_TRAMP_FEXIT,
	BPF_TRAMP_MODIFY_RETURN,
	BPF_TRAMP_MAX,
	BPF_TRAMP_REPLACE, /* more than MAX */
};

struct bpf_tramp_image {
	void *image;
	struct bpf_ksym ksym;
	struct percpu_ref pcref;
	void *ip_after_call;
	void *ip_epilogue;
	union {
		struct rcu_head rcu;
		struct work_struct work;
	};
};

struct bpf_trampoline {
	/* hlist for trampoline_table */
	struct hlist_node hlist;
	/* serializes access to fields of this trampoline */
	struct mutex mutex;
	refcount_t refcnt;
	u64 key;
	struct {
		struct btf_func_model model;
		void *addr;
		bool ftrace_managed;
	} func;
	/* if !NULL this is BPF_PROG_TYPE_EXT program that extends another BPF
	 * program by replacing one of its functions. func.addr is the address
	 * of the function it replaced.
	 */
	struct bpf_prog *extension_prog;
	/* list of BPF programs using this trampoline */
	struct hlist_head progs_hlist[BPF_TRAMP_MAX];
	/* Number of attached programs. A counter per kind. */
	int progs_cnt[BPF_TRAMP_MAX];
	/* Executable image of trampoline */
	struct bpf_tramp_image *cur_image;
	u64 selector;
	struct module *mod;
};

struct bpf_attach_target_info {
	struct btf_func_model fmodel;
	long tgt_addr;
	const char *tgt_name;
	const struct btf_type *tgt_type;
};

#define BPF_DISPATCHER_MAX 48 /* Fits in 2048B */

struct bpf_dispatcher_prog {
	struct bpf_prog *prog;
	refcount_t users;
};

struct bpf_dispatcher {
	/* dispatcher mutex */
	struct mutex mutex;
	void *func;
	struct bpf_dispatcher_prog progs[BPF_DISPATCHER_MAX];
	int num_progs;
	void *image;
	u32 image_off;
	struct bpf_ksym ksym;
};

static __always_inline __nocfi unsigned int bpf_dispatcher_nop_func(
	const void *ctx,
	const struct bpf_insn *insnsi,
	unsigned int (*bpf_func)(const void *,
				 const struct bpf_insn *))
{
	return bpf_func(ctx, insnsi);
}
#ifdef CONFIG_BPF_JIT
int bpf_trampoline_link_prog(struct bpf_prog *prog, struct bpf_trampoline *tr);
int bpf_trampoline_unlink_prog(struct bpf_prog *prog, struct bpf_trampoline *tr);
struct bpf_trampoline *bpf_trampoline_get(u64 key,
					  struct bpf_attach_target_info *tgt_info);
void bpf_trampoline_put(struct bpf_trampoline *tr);
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs);
#define BPF_DISPATCHER_INIT(_name) {				\
	.mutex = __MUTEX_INITIALIZER(_name.mutex),		\
	.func = &_name##_func,					\
	.progs = {},						\
	.num_progs = 0,						\
	.image = NULL,						\
	.image_off = 0,						\
	.ksym = {						\
		.name  = #_name,				\
		.lnode = LIST_HEAD_INIT(_name.ksym.lnode),	\
	},							\
}

#define DEFINE_BPF_DISPATCHER(name)					\
	noinline __nocfi unsigned int bpf_dispatcher_##name##_func(	\
		const void *ctx,					\
		const struct bpf_insn *insnsi,				\
		unsigned int (*bpf_func)(const void *,			\
					 const struct bpf_insn *))	\
	{								\
		return bpf_func(ctx, insnsi);				\
	}								\
	EXPORT_SYMBOL(bpf_dispatcher_##name##_func);			\
	struct bpf_dispatcher bpf_dispatcher_##name =			\
		BPF_DISPATCHER_INIT(bpf_dispatcher_##name);
#define DECLARE_BPF_DISPATCHER(name)					\
	unsigned int bpf_dispatcher_##name##_func(			\
		const void *ctx,					\
		const struct bpf_insn *insnsi,				\
		unsigned int (*bpf_func)(const void *,			\
					 const struct bpf_insn *));	\
	extern struct bpf_dispatcher bpf_dispatcher_##name;
#define BPF_DISPATCHER_FUNC(name) bpf_dispatcher_##name##_func
#define BPF_DISPATCHER_PTR(name) (&bpf_dispatcher_##name)
void bpf_dispatcher_change_prog(struct bpf_dispatcher *d, struct bpf_prog *from,
				struct bpf_prog *to);
/* Called only from JIT-enabled code, so there's no need for stubs. */
void *bpf_jit_alloc_exec_page(void);
void bpf_image_ksym_add(void *data, struct bpf_ksym *ksym);
void bpf_image_ksym_del(struct bpf_ksym *ksym);
void bpf_ksym_add(struct bpf_ksym *ksym);
void bpf_ksym_del(struct bpf_ksym *ksym);
int bpf_jit_charge_modmem(u32 pages);
void bpf_jit_uncharge_modmem(u32 pages);
#else
static inline int bpf_trampoline_link_prog(struct bpf_prog *prog,
					   struct bpf_trampoline *tr)
{
	return -ENOTSUPP;
}
static inline int bpf_trampoline_unlink_prog(struct bpf_prog *prog,
					     struct bpf_trampoline *tr)
{
	return -ENOTSUPP;
}
static inline struct bpf_trampoline *bpf_trampoline_get(u64 key,
							struct bpf_attach_target_info *tgt_info)
{
	return NULL;
}
static inline void bpf_trampoline_put(struct bpf_trampoline *tr) {}
#define DEFINE_BPF_DISPATCHER(name)
#define DECLARE_BPF_DISPATCHER(name)
#define BPF_DISPATCHER_FUNC(name) bpf_dispatcher_nop_func
#define BPF_DISPATCHER_PTR(name) NULL
static inline void bpf_dispatcher_change_prog(struct bpf_dispatcher *d,
					      struct bpf_prog *from,
					      struct bpf_prog *to) {}
static inline bool is_bpf_image_address(unsigned long address)
{
	return false;
}
#endif

struct bpf_func_info_aux {
	u16 linkage;
	bool unreliable;
};

enum bpf_jit_poke_reason {
	BPF_POKE_REASON_TAIL_CALL,
};

/* Descriptor of pokes pointing /into/ the JITed image. */
struct bpf_jit_poke_descriptor {
	void *tailcall_target;
	void *tailcall_bypass;
	void *bypass_addr;
	void *aux;
	union {
		struct {
			struct bpf_map *map;
			u32 key;
		} tail_call;
	};
	bool tailcall_target_stable;
	u8 adj_off;
	u16 reason;
	u32 insn_idx;
};

/* reg_type info for ctx arguments */
struct bpf_ctx_arg_aux {
	u32 offset;
	enum bpf_reg_type reg_type;
	u32 btf_id;
};

struct btf_mod_pair {
	struct btf *btf;
	struct module *module;
};

struct bpf_kfunc_desc_tab;

struct bpf_prog_aux {
	atomic64_t refcnt;
	u32 used_map_cnt;
	u32 used_btf_cnt;
	u32 max_ctx_offset;
	u32 max_pkt_offset;
	u32 max_tp_access;
	u32 stack_depth;
	u32 id;
	u32 func_cnt; /* used by non-func prog as the number of func progs */
	u32 func_idx; /* 0 for non-func prog, the index in func array for func prog */
	u32 attach_btf_id; /* in-kernel BTF type id to attach to */
	u32 ctx_arg_info_size;
	u32 max_rdonly_access;
	u32 max_rdwr_access;
	struct btf *attach_btf;
	const struct bpf_ctx_arg_aux *ctx_arg_info;
	struct mutex dst_mutex; /* protects dst_* pointers below, *after* prog becomes visible */
	struct bpf_prog *dst_prog;
	struct bpf_trampoline *dst_trampoline;
	enum bpf_prog_type saved_dst_prog_type;
	enum bpf_attach_type saved_dst_attach_type;
	bool verifier_zext; /* Zero extensions has been inserted by verifier. */
	bool offload_requested;
	bool attach_btf_trace; /* true if attaching to BTF-enabled raw tp */
	bool func_proto_unreliable;
	bool sleepable;
	bool tail_call_reachable;
	struct hlist_node tramp_hlist;
	/* BTF_KIND_FUNC_PROTO for valid attach_btf_id */
	const struct btf_type *attach_func_proto;
	/* function name for valid attach_btf_id */
	const char *attach_func_name;
	struct bpf_prog **func;
	void *jit_data; /* JIT specific data. arch dependent */
	struct bpf_jit_poke_descriptor *poke_tab;
	struct bpf_kfunc_desc_tab *kfunc_tab;
	u32 size_poke_tab;
	struct bpf_ksym ksym;
	const struct bpf_prog_ops *ops;
	struct bpf_map **used_maps;
	struct mutex used_maps_mutex; /* mutex for used_maps and used_map_cnt */
	struct btf_mod_pair *used_btfs;
	struct bpf_prog *prog;
	struct user_struct *user;
	u64 load_time; /* ns since boottime */
	struct bpf_map *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
	char name[BPF_OBJ_NAME_LEN];
#ifdef CONFIG_SECURITY
	void *security;
#endif
	struct bpf_prog_offload *offload;
	struct btf *btf;
	struct bpf_func_info *func_info;
	struct bpf_func_info_aux *func_info_aux;
	/* bpf_line_info loaded from userspace.  linfo->insn_off
	 * has the xlated insn offset.
	 * Both the main and sub prog share the same linfo.
	 * The subprog can access its first linfo by
	 * using the linfo_idx.
	 */
	struct bpf_line_info *linfo;
	/* jited_linfo is the jited addr of the linfo.  It has a
	 * one to one mapping to linfo:
	 * jited_linfo[i] is the jited addr for the linfo[i]->insn_off.
	 * Both the main and sub prog share the same jited_linfo.
	 * The subprog can access its first jited_linfo by
	 * using the linfo_idx.
	 */
	void **jited_linfo;
	u32 func_info_cnt;
	u32 nr_linfo;
	/* subprog can use linfo_idx to access its first linfo and
	 * jited_linfo.
	 * main prog always has linfo_idx == 0
	 */
	u32 linfo_idx;
	u32 num_exentries;
	struct exception_table_entry *extable;
	union {
		struct work_struct work;
		struct rcu_head	rcu;
	};
};

struct bpf_array_aux {
	/* Programs with direct jumps into programs part of this array. */
	struct list_head poke_progs;
	struct bpf_map *map;
	struct mutex poke_mutex;
	struct work_struct work;
};

struct bpf_link {
	atomic64_t refcnt;
	u32 id;
	enum bpf_link_type type;
	const struct bpf_link_ops *ops;
	struct bpf_prog *prog;
	struct work_struct work;
};

struct bpf_link_ops {
	void (*release)(struct bpf_link *link);
	void (*dealloc)(struct bpf_link *link);
	int (*detach)(struct bpf_link *link);
	int (*update_prog)(struct bpf_link *link, struct bpf_prog *new_prog,
			   struct bpf_prog *old_prog);
	void (*show_fdinfo)(const struct bpf_link *link, struct seq_file *seq);
	int (*fill_link_info)(const struct bpf_link *link,
			      struct bpf_link_info *info);
};

struct bpf_link_primer {
	struct bpf_link *link;
	struct file *file;
	int fd;
	u32 id;
};

struct bpf_struct_ops_value;
struct btf_member;

#define BPF_STRUCT_OPS_MAX_NR_MEMBERS 64
struct bpf_struct_ops {
	const struct bpf_verifier_ops *verifier_ops;
	int (*init)(struct btf *btf);
	int (*check_member)(const struct btf_type *t,
			    const struct btf_member *member);
	int (*init_member)(const struct btf_type *t,
			   const struct btf_member *member,
			   void *kdata, const void *udata);
	int (*reg)(void *kdata);
	void (*unreg)(void *kdata);
	const struct btf_type *type;
	const struct btf_type *value_type;
	const char *name;
	struct btf_func_model func_models[BPF_STRUCT_OPS_MAX_NR_MEMBERS];
	u32 type_id;
	u32 value_id;
};

#if defined(CONFIG_BPF_JIT) && defined(CONFIG_BPF_SYSCALL)
#define BPF_MODULE_OWNER ((void *)((0xeB9FUL << 2) + POISON_POINTER_DELTA))
const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id);
void bpf_struct_ops_init(struct btf *btf, struct bpf_verifier_log *log);
bool bpf_struct_ops_get(const void *kdata);
void bpf_struct_ops_put(const void *kdata);
int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map, void *key,
				       void *value);
static inline bool bpf_try_module_get(const void *data, struct module *owner)
{
	if (owner == BPF_MODULE_OWNER)
		return bpf_struct_ops_get(data);
	else
		return try_module_get(owner);
}
static inline void bpf_module_put(const void *data, struct module *owner)
{
	if (owner == BPF_MODULE_OWNER)
		bpf_struct_ops_put(data);
	else
		module_put(owner);
}
#else
static inline const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id)
{
	return NULL;
}
static inline void bpf_struct_ops_init(struct btf *btf,
				       struct bpf_verifier_log *log)
{
}
static inline bool bpf_try_module_get(const void *data, struct module *owner)
{
	return try_module_get(owner);
}
static inline void bpf_module_put(const void *data, struct module *owner)
{
	module_put(owner);
}
static inline int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map,
						     void *key,
						     void *value)
{
	return -EINVAL;
}
#endif

struct bpf_array {
	struct bpf_map map;
	u32 elem_size;
	u32 index_mask;
	struct bpf_array_aux *aux;
	union {
		char value[0] __aligned(8);
		void *ptrs[0] __aligned(8);
		void __percpu *pptrs[0] __aligned(8);
	};
};

#define BPF_COMPLEXITY_LIMIT_INSNS      1000000 /* yes. 1M insns */
#define MAX_TAIL_CALL_CNT 32

#define BPF_F_ACCESS_MASK	(BPF_F_RDONLY |		\
				 BPF_F_RDONLY_PROG |	\
				 BPF_F_WRONLY |		\
				 BPF_F_WRONLY_PROG)

#define BPF_MAP_CAN_READ	BIT(0)
#define BPF_MAP_CAN_WRITE	BIT(1)

static inline u32 bpf_map_flags_to_cap(struct bpf_map *map)
{
	u32 access_flags = map->map_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);

/* Combination of BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG is
	 * not possible.
	 */
	if (access_flags & BPF_F_RDONLY_PROG)
		return BPF_MAP_CAN_READ;
	else if (access_flags & BPF_F_WRONLY_PROG)
		return BPF_MAP_CAN_WRITE;
	else
		return BPF_MAP_CAN_READ | BPF_MAP_CAN_WRITE;
}

static inline bool bpf_map_flags_access_ok(u32 access_flags)
{
	return (access_flags & (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG)) !=
	       (BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);
}

static inline struct bpf_map_owner *bpf_map_owner_alloc(struct bpf_map *map)
{
	return kzalloc(sizeof(*map->owner), GFP_ATOMIC);
}

static inline void bpf_map_owner_free(struct bpf_map *map)
{
	kfree(map->owner);
}

struct bpf_event_entry {
	struct perf_event *event;
	struct file *perf_file;
	struct file *map_file;
	struct rcu_head rcu;
};

bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp);
int bpf_prog_calc_tag(struct bpf_prog *fp);

const struct bpf_func_proto *bpf_get_trace_printk_proto(void);

typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src,
					unsigned long off, unsigned long len);
typedef u32 (*bpf_convert_ctx_access_t)(enum bpf_access_type type,
					const struct bpf_insn *src,
					struct bpf_insn *dst,
					struct bpf_prog *prog,
					u32 *target_size);

u64 bpf_event_output(struct bpf_map *map, u64 flags, void *meta, u64 meta_size,
		     void *ctx, u64 ctx_size, bpf_ctx_copy_t ctx_copy);

/* an array of programs to be executed under rcu_lock.
 *
 * Typical usage:
 * ret = BPF_PROG_RUN_ARRAY(&bpf_prog_array, ctx, bpf_prog_run);
 *
 * the structure returned by bpf_prog_array_alloc() should be populated
 * with program pointers and the last pointer must be NULL.
 * The user has to keep refcnt on the program and make sure the program
 * is removed from the array before bpf_prog_put().
 * The 'struct bpf_prog_array *' should only be replaced with xchg()
 * since other cpus are walking the array of pointers in parallel.
 */
struct bpf_prog_array_item {
	struct bpf_prog *prog;
	union {
		struct bpf_cgroup_storage *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
		u64 bpf_cookie;
	};
};

struct bpf_prog_array {
	struct rcu_head rcu;
	struct bpf_prog_array_item items[];
};

struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags);
void bpf_prog_array_free(struct bpf_prog_array *progs);
int bpf_prog_array_length(struct bpf_prog_array *progs);
bool bpf_prog_array_is_empty(struct bpf_prog_array *array);
int bpf_prog_array_copy_to_user(struct bpf_prog_array *progs,
				__u32 __user *prog_ids, u32 cnt);

void bpf_prog_array_delete_safe(struct bpf_prog_array *progs,
				struct bpf_prog *old_prog);
int bpf_prog_array_delete_safe_at(struct bpf_prog_array *array, int index);
int bpf_prog_array_update_at(struct bpf_prog_array *array, int index,
			     struct bpf_prog *prog);
int bpf_prog_array_copy_info(struct bpf_prog_array *array,
			     u32 *prog_ids, u32 request_cnt,
			     u32 *prog_cnt);
int bpf_prog_array_copy(struct bpf_prog_array *old_array,
			struct bpf_prog *exclude_prog,
			struct bpf_prog *include_prog,
			u64 bpf_cookie,
			struct bpf_prog_array **new_array);

struct bpf_run_ctx {};

struct bpf_cg_run_ctx {
	struct bpf_run_ctx run_ctx;
	const struct bpf_prog_array_item *prog_item;
};

struct bpf_trace_run_ctx {
	struct bpf_run_ctx run_ctx;
	u64 bpf_cookie;
};

static inline struct bpf_run_ctx *bpf_set_run_ctx(struct bpf_run_ctx *new_ctx)
{
	struct bpf_run_ctx *old_ctx = NULL;

#ifdef CONFIG_BPF_SYSCALL
	old_ctx = current->bpf_ctx;
	current->bpf_ctx = new_ctx;
#endif
	return old_ctx;
}

static inline void bpf_reset_run_ctx(struct bpf_run_ctx *old_ctx)
{
#ifdef CONFIG_BPF_SYSCALL
	current->bpf_ctx = old_ctx;
#endif
}

/* BPF program asks to bypass CAP_NET_BIND_SERVICE in bind. */
#define BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE			(1 << 0)
/* BPF program asks to set CN on the packet. */
#define BPF_RET_SET_CN						(1 << 0)

typedef u32 (*bpf_prog_run_fn)(const struct bpf_prog *prog, const void *ctx);

static __always_inline u32
BPF_PROG_RUN_ARRAY_CG_FLAGS(const struct bpf_prog_array __rcu *array_rcu,
			    const void *ctx, bpf_prog_run_fn run_prog,
			    u32 *ret_flags)
{
	const struct bpf_prog_array_item *item;
	const struct bpf_prog *prog;
	const struct bpf_prog_array *array;
	struct bpf_run_ctx *old_run_ctx;
	struct bpf_cg_run_ctx run_ctx;
	u32 ret = 1;
	u32 func_ret;

migrate_disable();
	rcu_read_lock();
	array = rcu_dereference(array_rcu);
	item = &array->items[0];
	old_run_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
	while ((prog = READ_ONCE(item->prog))) {
		run_ctx.prog_item = item;
		func_ret = run_prog(prog, ctx);
		ret &= (func_ret & 1);
		*(ret_flags) |= (func_ret >> 1);
		item++;
	}
	bpf_reset_run_ctx(old_run_ctx);
	rcu_read_unlock();
	migrate_enable();
	return ret;
}

static __always_inline u32
BPF_PROG_RUN_ARRAY_CG(const struct bpf_prog_array __rcu *array_rcu,
		      const void *ctx, bpf_prog_run_fn run_prog)
{
	const struct bpf_prog_array_item *item;
	const struct bpf_prog *prog;
	const struct bpf_prog_array *array;
	struct bpf_run_ctx *old_run_ctx;
	struct bpf_cg_run_ctx run_ctx;
	u32 ret = 1;

migrate_disable();
	rcu_read_lock();
	array = rcu_dereference(array_rcu);
	item = &array->items[0];
	old_run_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
	while ((prog = READ_ONCE(item->prog))) {
		run_ctx.prog_item = item;
		ret &= run_prog(prog, ctx);
		item++;
	}
	bpf_reset_run_ctx(old_run_ctx);
	rcu_read_unlock();
	migrate_enable();
	return ret;
}

static __always_inline u32
BPF_PROG_RUN_ARRAY(const struct bpf_prog_array __rcu *array_rcu,
		   const void *ctx, bpf_prog_run_fn run_prog)
{
	const struct bpf_prog_array_item *item;
	const struct bpf_prog *prog;
	const struct bpf_prog_array *array;
	struct bpf_run_ctx *old_run_ctx;
	struct bpf_trace_run_ctx run_ctx;
	u32 ret = 1;

migrate_disable();
	rcu_read_lock();
	array = rcu_dereference(array_rcu);
	if (unlikely(!array))
		goto out;
	old_run_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
	item = &array->items[0];
	while ((prog = READ_ONCE(item->prog))) {
		run_ctx.bpf_cookie = item->bpf_cookie;
		ret &= run_prog(prog, ctx);
		item++;
	}
	bpf_reset_run_ctx(old_run_ctx);
out:
	rcu_read_unlock();
	migrate_enable();
	return ret;
}

/* To be used by __cgroup_bpf_run_filter_skb for EGRESS BPF progs
 * so BPF programs can request cwr for TCP packets.
 *
 * Current cgroup skb programs can only return 0 or 1 (0 to drop the
 * packet. This macro changes the behavior so the low order bit
 * indicates whether the packet should be dropped (0) or not (1)
 * and the next bit is a congestion notification bit. This could be
 * used by TCP to call tcp_enter_cwr()
 *
 * Hence, new allowed return values of CGROUP EGRESS BPF programs are:
 *   0: drop packet
 *   1: keep packet
 *   2: drop packet and cn
 *   3: keep packet and cn
 *
 * This macro then converts it to one of the NET_XMIT or an error
 * code that is then interpreted as drop packet (and no cn):
 *   0: NET_XMIT_SUCCESS  skb should be transmitted
 *   1: NET_XMIT_DROP     skb should be dropped and cn
 *   2: NET_XMIT_CN       skb should be transmitted and cn
 *   3: -EPERM            skb should be dropped
 */
#define BPF_PROG_CGROUP_INET_EGRESS_RUN_ARRAY(array, ctx, func)		\
	({						\
		u32 _flags = 0;				\
		bool _cn;				\
		u32 _ret;				\
		_ret = BPF_PROG_RUN_ARRAY_CG_FLAGS(array, ctx, func, &_flags); \
		_cn = _flags & BPF_RET_SET_CN;		\
		if (_ret)				\
			_ret = (_cn ? NET_XMIT_CN : NET_XMIT_SUCCESS);	\
		else					\
			_ret = (_cn ? NET_XMIT_DROP : -EPERM);		\
		_ret;					\
	})

#ifdef CONFIG_BPF_SYSCALL
DECLARE_PER_CPU(int, bpf_prog_active);
extern struct mutex bpf_stats_enabled_mutex;

/*
 * Block execution of BPF programs attached to instrumentation (perf,
 * kprobes, tracepoints) to prevent deadlocks on map operations as any of
 * these events can happen inside a region which holds a map bucket lock
 * and can deadlock on it.
 */
static inline void bpf_disable_instrumentation(void)
{
	migrate_disable();
	this_cpu_inc(bpf_prog_active);
}

static inline void bpf_enable_instrumentation(void)
{
	this_cpu_dec(bpf_prog_active);
	migrate_enable();
}

extern const struct file_operations bpf_map_fops;
extern const struct file_operations bpf_prog_fops;
extern const struct file_operations bpf_iter_fops;

#define BPF_PROG_TYPE(_id, _name, prog_ctx_type, kern_ctx_type) \
	extern const struct bpf_prog_ops _name ## _prog_ops; \
	extern const struct bpf_verifier_ops _name ## _verifier_ops;
#define BPF_MAP_TYPE(_id, _ops) \
	extern const struct bpf_map_ops _ops;
#define BPF_LINK_TYPE(_id, _name)
#include <linux/bpf_types.h>
#undef BPF_PROG_TYPE
#undef BPF_MAP_TYPE
#undef BPF_LINK_TYPE

extern const struct bpf_prog_ops bpf_offload_prog_ops;
extern const struct bpf_verifier_ops tc_cls_act_analyzer_ops;
extern const struct bpf_verifier_ops xdp_analyzer_ops;

struct bpf_prog *bpf_prog_get(u32 ufd);
struct bpf_prog *bpf_prog_get_type_dev(u32 ufd, enum bpf_prog_type type,
				       bool attach_drv);
void bpf_prog_add(struct bpf_prog *prog, int i);
void bpf_prog_sub(struct bpf_prog *prog, int i);
void bpf_prog_inc(struct bpf_prog *prog);
struct bpf_prog * __must_check bpf_prog_inc_not_zero(struct bpf_prog *prog);
void bpf_prog_put(struct bpf_prog *prog);

void bpf_prog_free_id(struct bpf_prog *prog, bool do_idr_lock);
void bpf_map_free_id(struct bpf_map *map, bool do_idr_lock);

struct bpf_map *bpf_map_get(u32 ufd);
struct bpf_map *bpf_map_get_with_uref(u32 ufd);
struct bpf_map *__bpf_map_get(struct fd f);
void bpf_map_inc(struct bpf_map *map);
void bpf_map_inc_with_uref(struct bpf_map *map);
struct bpf_map * __must_check bpf_map_inc_not_zero(struct bpf_map *map);
void bpf_map_put_with_uref(struct bpf_map *map);
void bpf_map_put(struct bpf_map *map);
void *bpf_map_area_alloc(u64 size, int numa_node);
void *bpf_map_area_mmapable_alloc(u64 size, int numa_node);
void bpf_map_area_free(void *base);
bool bpf_map_write_active(const struct bpf_map *map);
void bpf_map_init_from_attr(struct bpf_map *map, union bpf_attr *attr);
int  generic_map_lookup_batch(struct bpf_map *map,
			      const union bpf_attr *attr,
			      union bpf_attr __user *uattr);
int  generic_map_update_batch(struct bpf_map *map,
			      const union bpf_attr *attr,
			      union bpf_attr __user *uattr);
int  generic_map_delete_batch(struct bpf_map *map,
			      const union bpf_attr *attr,
			      union bpf_attr __user *uattr);
struct bpf_map *bpf_map_get_curr_or_next(u32 *id);
struct bpf_prog *bpf_prog_get_curr_or_next(u32 *id);

#ifdef CONFIG_MEMCG_KMEM
void *bpf_map_kmalloc_node(const struct bpf_map *map, size_t size, gfp_t flags,
			   int node);
void *bpf_map_kzalloc(const struct bpf_map *map, size_t size, gfp_t flags);
void __percpu *bpf_map_alloc_percpu(const struct bpf_map *map, size_t size,
				    size_t align, gfp_t flags);
#else
static inline void *
bpf_map_kmalloc_node(const struct bpf_map *map, size_t size, gfp_t flags,
		     int node)
{
	return kmalloc_node(size, flags, node);
}

static inline void *
bpf_map_kzalloc(const struct bpf_map *map, size_t size, gfp_t flags)
{
	return kzalloc(size, flags);
}

static inline void __percpu *
bpf_map_alloc_percpu(const struct bpf_map *map, size_t size, size_t align,
		     gfp_t flags)
{
	return __alloc_percpu_gfp(size, align, flags);
}
#endif

extern int sysctl_unprivileged_bpf_disabled;

static inline bool bpf_allow_ptr_leaks(void)
{
	return perfmon_capable();
}

static inline bool bpf_allow_uninit_stack(void)
{
	return perfmon_capable();
}

static inline bool bpf_allow_ptr_to_map_access(void)
{
	return perfmon_capable();
}

static inline bool bpf_bypass_spec_v1(void)
{
	return perfmon_capable();
}

static inline bool bpf_bypass_spec_v4(void)
{
	return perfmon_capable();
}

int bpf_map_new_fd(struct bpf_map *map, int flags);
int bpf_prog_new_fd(struct bpf_prog *prog);

void bpf_link_init(struct bpf_link *link, enum bpf_link_type type,
		   const struct bpf_link_ops *ops, struct bpf_prog *prog);
int bpf_link_prime(struct bpf_link *link, struct bpf_link_primer *primer);
int bpf_link_settle(struct bpf_link_primer *primer);
void bpf_link_cleanup(struct bpf_link_primer *primer);
void bpf_link_inc(struct bpf_link *link);
void bpf_link_put(struct bpf_link *link);
int bpf_link_new_fd(struct bpf_link *link);
struct file *bpf_link_new_file(struct bpf_link *link, int *reserved_fd);
struct bpf_link *bpf_link_get_from_fd(u32 ufd);

int bpf_obj_pin_user(u32 ufd, const char __user *pathname);
int bpf_obj_get_user(const char __user *pathname, int flags);

#define BPF_ITER_FUNC_PREFIX "bpf_iter_"
#define DEFINE_BPF_ITER_FUNC(target, args...)			\
	extern int bpf_iter_ ## target(args);			\
	int __init bpf_iter_ ## target(args) { return 0; }

struct bpf_iter_aux_info {
	struct bpf_map *map;
};

typedef int (*bpf_iter_attach_target_t)(struct bpf_prog *prog,
					union bpf_iter_link_info *linfo,
					struct bpf_iter_aux_info *aux);
typedef void (*bpf_iter_detach_target_t)(struct bpf_iter_aux_info *aux);
typedef void (*bpf_iter_show_fdinfo_t) (const struct bpf_iter_aux_info *aux,
					struct seq_file *seq);
typedef int (*bpf_iter_fill_link_info_t)(const struct bpf_iter_aux_info *aux,
					 struct bpf_link_info *info);
typedef const struct bpf_func_proto *
(*bpf_iter_get_func_proto_t)(enum bpf_func_id func_id,
			     const struct bpf_prog *prog);

enum bpf_iter_feature {
	BPF_ITER_RESCHED	= BIT(0),
};

#define BPF_ITER_CTX_ARG_MAX 2
struct bpf_iter_reg {
	const char *target;
	bpf_iter_attach_target_t attach_target;
	bpf_iter_detach_target_t detach_target;
	bpf_iter_show_fdinfo_t show_fdinfo;
	bpf_iter_fill_link_info_t fill_link_info;
	bpf_iter_get_func_proto_t get_func_proto;
	u32 ctx_arg_info_size;
	u32 feature;
	struct bpf_ctx_arg_aux ctx_arg_info[BPF_ITER_CTX_ARG_MAX];
	const struct bpf_iter_seq_info *seq_info;
};

struct bpf_iter_meta {
	__bpf_md_ptr(struct seq_file *, seq);
	u64 session_id;
	u64 seq_num;
};

struct bpf_iter__bpf_map_elem {
	__bpf_md_ptr(struct bpf_iter_meta *, meta);
	__bpf_md_ptr(struct bpf_map *, map);
	__bpf_md_ptr(void *, key);
	__bpf_md_ptr(void *, value);
};

int bpf_iter_reg_target(const struct bpf_iter_reg *reg_info);
void bpf_iter_unreg_target(const struct bpf_iter_reg *reg_info);
bool bpf_iter_prog_supported(struct bpf_prog *prog);
const struct bpf_func_proto *
bpf_iter_get_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
int bpf_iter_link_attach(const union bpf_attr *attr, bpfptr_t uattr, struct bpf_prog *prog);
int bpf_iter_new_fd(struct bpf_link *link);
bool bpf_link_is_iter(struct bpf_link *link);
struct bpf_prog *bpf_iter_get_info(struct bpf_iter_meta *meta, bool in_stop);
int bpf_iter_run_prog(struct bpf_prog *prog, void *ctx);
void bpf_iter_map_show_fdinfo(const struct bpf_iter_aux_info *aux,
			      struct seq_file *seq);
int bpf_iter_map_fill_link_info(const struct bpf_iter_aux_info *aux,
				struct bpf_link_info *info);

int map_set_for_each_callback_args(struct bpf_verifier_env *env,
				   struct bpf_func_state *caller,
				   struct bpf_func_state *callee);

int bpf_percpu_hash_copy(struct bpf_map *map, void *key, void *value);
int bpf_percpu_array_copy(struct bpf_map *map, void *key, void *value);
int bpf_percpu_hash_update(struct bpf_map *map, void *key, void *value,
			   u64 flags);
int bpf_percpu_array_update(struct bpf_map *map, void *key, void *value,
			    u64 flags);

int bpf_stackmap_copy(struct bpf_map *map, void *key, void *value);

int bpf_fd_array_map_update_elem(struct bpf_map *map, struct file *map_file,
				 void *key, void *value, u64 map_flags);
int bpf_fd_array_map_lookup_elem(struct bpf_map *map, void *key, u32 *value);
int bpf_fd_htab_map_update_elem(struct bpf_map *map, struct file *map_file,
				void *key, void *value, u64 map_flags);
int bpf_fd_htab_map_lookup_elem(struct bpf_map *map, void *key, u32 *value);

int bpf_get_file_flag(int flags);
int bpf_check_uarg_tail_zero(bpfptr_t uaddr, size_t expected_size,
			     size_t actual_size);

/* memcpy that is used with 8-byte aligned pointers, power-of-8 size and
 * forced to use 'long' read/writes to try to atomically copy long counters.
 * Best-effort only.  No barriers here, since it _will_ race with concurrent
 * updates from BPF programs. Called from bpf syscall and mostly used with
 * size 8 or 16 bytes, so ask compiler to inline it.
 */
static inline void bpf_long_memcpy(void *dst, const void *src, u32 size)
{
	const long *lsrc = src;
	long *ldst = dst;

size /= sizeof(long);
	while (size--)
		*ldst++ = *lsrc++;
}

/* verify correctness of eBPF program */
int bpf_check(struct bpf_prog **fp, union bpf_attr *attr, bpfptr_t uattr);

#ifndef CONFIG_BPF_JIT_ALWAYS_ON
void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth);
#endif

struct btf *bpf_get_btf_vmlinux(void);

/* Map specifics */
struct xdp_frame;
struct sk_buff;
struct bpf_dtab_netdev;
struct bpf_cpu_map_entry;

void __dev_flush(void);
int dev_xdp_enqueue(struct net_device *dev, struct xdp_frame *xdpf,
		    struct net_device *dev_rx);
int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_frame *xdpf,
		    struct net_device *dev_rx);
int dev_map_enqueue_multi(struct xdp_frame *xdpf, struct net_device *dev_rx,
			  struct bpf_map *map, bool exclude_ingress);
int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, struct sk_buff *skb,
			     struct bpf_prog *xdp_prog);
int dev_map_redirect_multi(struct net_device *dev, struct sk_buff *skb,
			   struct bpf_prog *xdp_prog, struct bpf_map *map,
			   bool exclude_ingress);

void __cpu_map_flush(void);
int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf,
		    struct net_device *dev_rx);
int cpu_map_generic_redirect(struct bpf_cpu_map_entry *rcpu,
			     struct sk_buff *skb);

/* Return map's numa specified by userspace */
static inline int bpf_map_attr_numa_node(const union bpf_attr *attr)
{
	return (attr->map_flags & BPF_F_NUMA_NODE) ?
		attr->numa_node : NUMA_NO_NODE;
}

struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type type);
int array_map_alloc_check(union bpf_attr *attr);

int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr,
			  union bpf_attr __user *uattr);
int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
			  union bpf_attr __user *uattr);
int bpf_prog_test_run_tracing(struct bpf_prog *prog,
			      const union bpf_attr *kattr,
			      union bpf_attr __user *uattr);
int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
				     const union bpf_attr *kattr,
				     union bpf_attr __user *uattr);
int bpf_prog_test_run_raw_tp(struct bpf_prog *prog,
			     const union bpf_attr *kattr,
			     union bpf_attr __user *uattr);
int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog,
				const union bpf_attr *kattr,
				union bpf_attr __user *uattr);
bool bpf_prog_test_check_kfunc_call(u32 kfunc_id);
bool btf_ctx_access(int off, int size, enum bpf_access_type type,
		    const struct bpf_prog *prog,
		    struct bpf_insn_access_aux *info);
int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf,
		      const struct btf_type *t, int off, int size,
		      enum bpf_access_type atype,
		      u32 *next_btf_id);
bool btf_struct_ids_match(struct bpf_verifier_log *log,
			  const struct btf *btf, u32 id, int off,
			  const struct btf *need_btf, u32 need_type_id);

int btf_distill_func_proto(struct bpf_verifier_log *log,
			   struct btf *btf,
			   const struct btf_type *func_proto,
			   const char *func_name,
			   struct btf_func_model *m);

struct bpf_reg_state;
int btf_check_subprog_arg_match(struct bpf_verifier_env *env, int subprog,
				struct bpf_reg_state *regs);
int btf_check_kfunc_arg_match(struct bpf_verifier_env *env,
			      const struct btf *btf, u32 func_id,
			      struct bpf_reg_state *regs);
int btf_prepare_func_args(struct bpf_verifier_env *env, int subprog,
			  struct bpf_reg_state *reg);
int btf_check_type_match(struct bpf_verifier_log *log, const struct bpf_prog *prog,
			 struct btf *btf, const struct btf_type *t);

struct bpf_prog *bpf_prog_by_id(u32 id);
struct bpf_link *bpf_link_by_id(u32 id);

const struct bpf_func_proto *bpf_base_func_proto(enum bpf_func_id func_id);
void bpf_task_storage_free(struct task_struct *task);
bool bpf_prog_has_kfunc_call(const struct bpf_prog *prog);
const struct btf_func_model *
bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
			 const struct bpf_insn *insn);

static inline bool unprivileged_ebpf_enabled(void)
{
	return !sysctl_unprivileged_bpf_disabled;
}

#else /* !CONFIG_BPF_SYSCALL */
static inline struct bpf_prog *bpf_prog_get(u32 ufd)
{
	return ERR_PTR(-EOPNOTSUPP);
}

static inline struct bpf_prog *bpf_prog_get_type_dev(u32 ufd,
						     enum bpf_prog_type type,
						     bool attach_drv)
{
	return ERR_PTR(-EOPNOTSUPP);
}

static inline void bpf_prog_add(struct bpf_prog *prog, int i)
{
}

static inline void bpf_prog_sub(struct bpf_prog *prog, int i)
{
}

static inline void bpf_prog_put(struct bpf_prog *prog)
{
}

static inline void bpf_prog_inc(struct bpf_prog *prog)
{
}

static inline struct bpf_prog *__must_check
bpf_prog_inc_not_zero(struct bpf_prog *prog)
{
	return ERR_PTR(-EOPNOTSUPP);
}

static inline void bpf_link_init(struct bpf_link *link, enum bpf_link_type type,
				 const struct bpf_link_ops *ops,
				 struct bpf_prog *prog)
{
}

static inline int bpf_link_prime(struct bpf_link *link,
				 struct bpf_link_primer *primer)
{
	return -EOPNOTSUPP;
}

static inline int bpf_link_settle(struct bpf_link_primer *primer)
{
	return -EOPNOTSUPP;
}

static inline void bpf_link_cleanup(struct bpf_link_primer *primer)
{
}

static inline void bpf_link_inc(struct bpf_link *link)
{
}

static inline void bpf_link_put(struct bpf_link *link)
{
}

static inline int bpf_obj_get_user(const char __user *pathname, int flags)
{
	return -EOPNOTSUPP;
}

static inline bool dev_map_can_have_prog(struct bpf_map *map)
{
	return false;
}

static inline void __dev_flush(void)
{
}

struct xdp_frame;
struct bpf_dtab_netdev;
struct bpf_cpu_map_entry;

static inline
int dev_xdp_enqueue(struct net_device *dev, struct xdp_frame *xdpf,
		    struct net_device *dev_rx)
{
	return 0;
}

static inline
int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_frame *xdpf,
		    struct net_device *dev_rx)
{
	return 0;
}

static inline
int dev_map_enqueue_multi(struct xdp_frame *xdpf, struct net_device *dev_rx,
			  struct bpf_map *map, bool exclude_ingress)
{
	return 0;
}

struct sk_buff;

static inline int dev_map_generic_redirect(struct bpf_dtab_netdev *dst,
					   struct sk_buff *skb,
					   struct bpf_prog *xdp_prog)
{
	return 0;
}

static inline
int dev_map_redirect_multi(struct net_device *dev, struct sk_buff *skb,
			   struct bpf_prog *xdp_prog, struct bpf_map *map,
			   bool exclude_ingress)
{
	return 0;
}

static inline void __cpu_map_flush(void)
{
}

static inline int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu,
				  struct xdp_frame *xdpf,
				  struct net_device *dev_rx)
{
	return 0;
}

static inline int cpu_map_generic_redirect(struct bpf_cpu_map_entry *rcpu,
					   struct sk_buff *skb)
{
	return -EOPNOTSUPP;
}

static inline bool cpu_map_prog_allowed(struct bpf_map *map)
{
	return false;
}

static inline struct bpf_prog *bpf_prog_get_type_path(const char *name,
				enum bpf_prog_type type)
{
	return ERR_PTR(-EOPNOTSUPP);
}

static inline int bpf_prog_test_run_xdp(struct bpf_prog *prog,
					const union bpf_attr *kattr,
					union bpf_attr __user *uattr)
{
	return -ENOTSUPP;
}

static inline int bpf_prog_test_run_skb(struct bpf_prog *prog,
					const union bpf_attr *kattr,
					union bpf_attr __user *uattr)
{
	return -ENOTSUPP;
}

static inline int bpf_prog_test_run_tracing(struct bpf_prog *prog,
					    const union bpf_attr *kattr,
					    union bpf_attr __user *uattr)
{
	return -ENOTSUPP;
}

static inline int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
						   const union bpf_attr *kattr,
						   union bpf_attr __user *uattr)
{
	return -ENOTSUPP;
}

static inline int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog,
					      const union bpf_attr *kattr,
					      union bpf_attr __user *uattr)
{
	return -ENOTSUPP;
}

static inline bool bpf_prog_test_check_kfunc_call(u32 kfunc_id)
{
	return false;
}

static inline void bpf_map_put(struct bpf_map *map)
{
}

static inline struct bpf_prog *bpf_prog_by_id(u32 id)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline const struct bpf_func_proto *
bpf_base_func_proto(enum bpf_func_id func_id)
{
	return NULL;
}

static inline void bpf_task_storage_free(struct task_struct *task)
{
}

static inline bool bpf_prog_has_kfunc_call(const struct bpf_prog *prog)
{
	return false;
}

static inline const struct btf_func_model *
bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
			 const struct bpf_insn *insn)
{
	return NULL;
}

static inline bool unprivileged_ebpf_enabled(void)
{
	return false;
}

#endif /* CONFIG_BPF_SYSCALL */

void __bpf_free_used_btfs(struct bpf_prog_aux *aux,
			  struct btf_mod_pair *used_btfs, u32 len);

static inline struct bpf_prog *bpf_prog_get_type(u32 ufd,
						 enum bpf_prog_type type)
{
	return bpf_prog_get_type_dev(ufd, type, false);
}

void __bpf_free_used_maps(struct bpf_prog_aux *aux,
			  struct bpf_map **used_maps, u32 len);

bool bpf_prog_get_ok(struct bpf_prog *, enum bpf_prog_type *, bool);

int bpf_prog_offload_compile(struct bpf_prog *prog);
void bpf_prog_offload_destroy(struct bpf_prog *prog);
int bpf_prog_offload_info_fill(struct bpf_prog_info *info,
			       struct bpf_prog *prog);

int bpf_map_offload_info_fill(struct bpf_map_info *info, struct bpf_map *map);

int bpf_map_offload_lookup_elem(struct bpf_map *map, void *key, void *value);
int bpf_map_offload_update_elem(struct bpf_map *map,
				void *key, void *value, u64 flags);
int bpf_map_offload_delete_elem(struct bpf_map *map, void *key);
int bpf_map_offload_get_next_key(struct bpf_map *map,
				 void *key, void *next_key);

bool bpf_offload_prog_map_match(struct bpf_prog *prog, struct bpf_map *map);

struct bpf_offload_dev *
bpf_offload_dev_create(const struct bpf_prog_offload_ops *ops, void *priv);
void bpf_offload_dev_destroy(struct bpf_offload_dev *offdev);
void *bpf_offload_dev_priv(struct bpf_offload_dev *offdev);
int bpf_offload_dev_netdev_register(struct bpf_offload_dev *offdev,
				    struct net_device *netdev);
void bpf_offload_dev_netdev_unregister(struct bpf_offload_dev *offdev,
				       struct net_device *netdev);
bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev);

void unpriv_ebpf_notify(int new_state);

#if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL)
int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr);

static inline bool bpf_prog_is_dev_bound(const struct bpf_prog_aux *aux)
{
	return aux->offload_requested;
}

static inline bool bpf_map_is_dev_bound(struct bpf_map *map)
{
	return unlikely(map->ops == &bpf_map_offload_ops);
}

struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr);
void bpf_map_offload_map_free(struct bpf_map *map);
int bpf_prog_test_run_syscall(struct bpf_prog *prog,
			      const union bpf_attr *kattr,
			      union bpf_attr __user *uattr);

int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog);
int sock_map_prog_detach(const union bpf_attr *attr, enum bpf_prog_type ptype);
int sock_map_update_elem_sys(struct bpf_map *map, void *key, void *value, u64 flags);
void sock_map_unhash(struct sock *sk);
void sock_map_destroy(struct sock *sk);
void sock_map_close(struct sock *sk, long timeout);
#else
static inline int bpf_prog_offload_init(struct bpf_prog *prog,
					union bpf_attr *attr)
{
	return -EOPNOTSUPP;
}

static inline bool bpf_prog_is_dev_bound(struct bpf_prog_aux *aux)
{
	return false;
}

static inline bool bpf_map_is_dev_bound(struct bpf_map *map)
{
	return false;
}

static inline struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr)
{
	return ERR_PTR(-EOPNOTSUPP);
}

static inline void bpf_map_offload_map_free(struct bpf_map *map)
{
}

static inline int bpf_prog_test_run_syscall(struct bpf_prog *prog,
					    const union bpf_attr *kattr,
					    union bpf_attr __user *uattr)
{
	return -ENOTSUPP;
}

#ifdef CONFIG_BPF_SYSCALL
static inline int sock_map_get_from_fd(const union bpf_attr *attr,
				       struct bpf_prog *prog)
{
	return -EINVAL;
}

static inline int sock_map_prog_detach(const union bpf_attr *attr,
				       enum bpf_prog_type ptype)
{
	return -EOPNOTSUPP;
}

static inline int sock_map_update_elem_sys(struct bpf_map *map, void *key, void *value,
					   u64 flags)
{
	return -EOPNOTSUPP;
}
#endif /* CONFIG_BPF_SYSCALL */
#endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */

#if defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL)
void bpf_sk_reuseport_detach(struct sock *sk);
int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, void *key,
				       void *value);
int bpf_fd_reuseport_array_update_elem(struct bpf_map *map, void *key,
				       void *value, u64 map_flags);
#else
static inline void bpf_sk_reuseport_detach(struct sock *sk)
{
}

#ifdef CONFIG_BPF_SYSCALL
static inline int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map,
						     void *key, void *value)
{
	return -EOPNOTSUPP;
}

static inline int bpf_fd_reuseport_array_update_elem(struct bpf_map *map,
						     void *key, void *value,
						     u64 map_flags)
{
	return -EOPNOTSUPP;
}
#endif /* CONFIG_BPF_SYSCALL */
#endif /* defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) */

/* verifier prototypes for helper functions called from eBPF programs */
extern const struct bpf_func_proto bpf_map_lookup_elem_proto;
extern const struct bpf_func_proto bpf_map_update_elem_proto;
extern const struct bpf_func_proto bpf_map_delete_elem_proto;
extern const struct bpf_func_proto bpf_map_push_elem_proto;
extern const struct bpf_func_proto bpf_map_pop_elem_proto;
extern const struct bpf_func_proto bpf_map_peek_elem_proto;

extern const struct bpf_func_proto bpf_get_prandom_u32_proto;
extern const struct bpf_func_proto bpf_get_smp_processor_id_proto;
extern const struct bpf_func_proto bpf_get_numa_node_id_proto;
extern const struct bpf_func_proto bpf_tail_call_proto;
extern const struct bpf_func_proto bpf_ktime_get_ns_proto;
extern const struct bpf_func_proto bpf_ktime_get_boot_ns_proto;
extern const struct bpf_func_proto bpf_get_current_pid_tgid_proto;
extern const struct bpf_func_proto bpf_get_current_uid_gid_proto;
extern const struct bpf_func_proto bpf_get_current_comm_proto;
extern const struct bpf_func_proto bpf_get_stackid_proto;
extern const struct bpf_func_proto bpf_get_stack_proto;
extern const struct bpf_func_proto bpf_get_task_stack_proto;
extern const struct bpf_func_proto bpf_get_stackid_proto_pe;
extern const struct bpf_func_proto bpf_get_stack_proto_pe;
extern const struct bpf_func_proto bpf_sock_map_update_proto;
extern const struct bpf_func_proto bpf_sock_hash_update_proto;
extern const struct bpf_func_proto bpf_get_current_cgroup_id_proto;
extern const struct bpf_func_proto bpf_get_current_ancestor_cgroup_id_proto;
extern const struct bpf_func_proto bpf_msg_redirect_hash_proto;
extern const struct bpf_func_proto bpf_msg_redirect_map_proto;
extern const struct bpf_func_proto bpf_sk_redirect_hash_proto;
extern const struct bpf_func_proto bpf_sk_redirect_map_proto;
extern const struct bpf_func_proto bpf_spin_lock_proto;
extern const struct bpf_func_proto bpf_spin_unlock_proto;
extern const struct bpf_func_proto bpf_get_local_storage_proto;
extern const struct bpf_func_proto bpf_strtol_proto;
extern const struct bpf_func_proto bpf_strtoul_proto;
extern const struct bpf_func_proto bpf_tcp_sock_proto;
extern const struct bpf_func_proto bpf_jiffies64_proto;
extern const struct bpf_func_proto bpf_get_ns_current_pid_tgid_proto;
extern const struct bpf_func_proto bpf_event_output_data_proto;
extern const struct bpf_func_proto bpf_ringbuf_output_proto;
extern const struct bpf_func_proto bpf_ringbuf_reserve_proto;
extern const struct bpf_func_proto bpf_ringbuf_submit_proto;
extern const struct bpf_func_proto bpf_ringbuf_discard_proto;
extern const struct bpf_func_proto bpf_ringbuf_query_proto;
extern const struct bpf_func_proto bpf_skc_to_tcp6_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_tcp_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_tcp_timewait_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_tcp_request_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_udp6_sock_proto;
extern const struct bpf_func_proto bpf_copy_from_user_proto;
extern const struct bpf_func_proto bpf_snprintf_btf_proto;
extern const struct bpf_func_proto bpf_snprintf_proto;
extern const struct bpf_func_proto bpf_per_cpu_ptr_proto;
extern const struct bpf_func_proto bpf_this_cpu_ptr_proto;
extern const struct bpf_func_proto bpf_ktime_get_coarse_ns_proto;
extern const struct bpf_func_proto bpf_sock_from_file_proto;
extern const struct bpf_func_proto bpf_get_socket_ptr_cookie_proto;
extern const struct bpf_func_proto bpf_task_storage_get_proto;
extern const struct bpf_func_proto bpf_task_storage_delete_proto;
extern const struct bpf_func_proto bpf_for_each_map_elem_proto;
extern const struct bpf_func_proto bpf_btf_find_by_name_kind_proto;
extern const struct bpf_func_proto bpf_sk_setsockopt_proto;
extern const struct bpf_func_proto bpf_sk_getsockopt_proto;

const struct bpf_func_proto *tracing_prog_func_proto(
  enum bpf_func_id func_id, const struct bpf_prog *prog);

/* Shared helpers among cBPF and eBPF. */
void bpf_user_rnd_init_once(void);
u64 bpf_user_rnd_u32(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);
u64 bpf_get_raw_cpu_id(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);

#if defined(CONFIG_NET)
bool bpf_sock_common_is_valid_access(int off, int size,
				     enum bpf_access_type type,
				     struct bpf_insn_access_aux *info);
bool bpf_sock_is_valid_access(int off, int size, enum bpf_access_type type,
			      struct bpf_insn_access_aux *info);
u32 bpf_sock_convert_ctx_access(enum bpf_access_type type,
				const struct bpf_insn *si,
				struct bpf_insn *insn_buf,
				struct bpf_prog *prog,
				u32 *target_size);
#else
static inline bool bpf_sock_common_is_valid_access(int off, int size,
						   enum bpf_access_type type,
						   struct bpf_insn_access_aux *info)
{
	return false;
}
static inline bool bpf_sock_is_valid_access(int off, int size,
					    enum bpf_access_type type,
					    struct bpf_insn_access_aux *info)
{
	return false;
}
static inline u32 bpf_sock_convert_ctx_access(enum bpf_access_type type,
					      const struct bpf_insn *si,
					      struct bpf_insn *insn_buf,
					      struct bpf_prog *prog,
					      u32 *target_size)
{
	return 0;
}
#endif

#ifdef CONFIG_INET
struct sk_reuseport_kern {
	struct sk_buff *skb;
	struct sock *sk;
	struct sock *selected_sk;
	struct sock *migrating_sk;
	void *data_end;
	u32 hash;
	u32 reuseport_id;
	bool bind_inany;
};
bool bpf_tcp_sock_is_valid_access(int off, int size, enum bpf_access_type type,
				  struct bpf_insn_access_aux *info);

u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type,
				    const struct bpf_insn *si,
				    struct bpf_insn *insn_buf,
				    struct bpf_prog *prog,
				    u32 *target_size);

bool bpf_xdp_sock_is_valid_access(int off, int size, enum bpf_access_type type,
				  struct bpf_insn_access_aux *info);

u32 bpf_xdp_sock_convert_ctx_access(enum bpf_access_type type,
				    const struct bpf_insn *si,
				    struct bpf_insn *insn_buf,
				    struct bpf_prog *prog,
				    u32 *target_size);
#else
static inline bool bpf_tcp_sock_is_valid_access(int off, int size,
						enum bpf_access_type type,
						struct bpf_insn_access_aux *info)
{
	return false;
}

static inline u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type,
						  const struct bpf_insn *si,
						  struct bpf_insn *insn_buf,
						  struct bpf_prog *prog,
						  u32 *target_size)
{
	return 0;
}
static inline bool bpf_xdp_sock_is_valid_access(int off, int size,
						enum bpf_access_type type,
						struct bpf_insn_access_aux *info)
{
	return false;
}

static inline u32 bpf_xdp_sock_convert_ctx_access(enum bpf_access_type type,
						  const struct bpf_insn *si,
						  struct bpf_insn *insn_buf,
						  struct bpf_prog *prog,
						  u32 *target_size)
{
	return 0;
}
#endif /* CONFIG_INET */

enum bpf_text_poke_type {
	BPF_MOD_CALL,
	BPF_MOD_JUMP,
};

int bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t,
		       void *addr1, void *addr2);

void bpf_arch_poke_desc_update(struct bpf_jit_poke_descriptor *poke,
			       struct bpf_prog *new, struct bpf_prog *old);

struct btf_id_set;
bool btf_id_set_contains(const struct btf_id_set *set, u32 id);

#define MAX_BPRINTF_VARARGS		12
#define MAX_BPRINTF_BUF			1024

struct bpf_bprintf_data {
	u32 *bin_args;
	char *buf;
	bool get_bin_args;
	bool get_buf;
};

int bpf_bprintf_prepare(char *fmt, u32 fmt_size, const u64 *raw_args,
			u32 num_args, struct bpf_bprintf_data *data);
void bpf_bprintf_cleanup(struct bpf_bprintf_data *data);

#endif /* _LINUX_BPF_H */

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