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Lukas Wunner 42df6e1d22 netfilter: Introduce egress hook 
Support classifying packets with netfilter on egress to satisfy user
requirements such as:
* outbound security policies for containers (Laura)
* filtering and mangling intra-node Direct Server Return (DSR) traffic
  on a load balancer (Laura)
* filtering locally generated traffic coming in through AF_PACKET,
  such as local ARP traffic generated for clustering purposes or DHCP
  (Laura; the AF_PACKET plumbing is contained in a follow-up commit)
* L2 filtering from ingress and egress for AVB (Audio Video Bridging)
  and gPTP with nftables (Pablo)
* in the future: in-kernel NAT64/NAT46 (Pablo)

The egress hook introduced herein complements the ingress hook added by
commit e687ad60af ("netfilter: add netfilter ingress hook after
handle_ing() under unique static key").  A patch for nftables to hook up
egress rules from user space has been submitted separately, so users may
immediately take advantage of the feature.

Alternatively or in addition to netfilter, packets can be classified
with traffic control (tc).  On ingress, packets are classified first by
tc, then by netfilter.  On egress, the order is reversed for symmetry.
Conceptually, tc and netfilter can be thought of as layers, with
netfilter layered above tc.

Traffic control is capable of redirecting packets to another interface
(man 8 tc-mirred).  E.g., an ingress packet may be redirected from the
host namespace to a container via a veth connection:
tc ingress (host) -> tc egress (veth host) -> tc ingress (veth container)

In this case, netfilter egress classifying is not performed when leaving
the host namespace!  That's because the packet is still on the tc layer.
If tc redirects the packet to a physical interface in the host namespace
such that it leaves the system, the packet is never subjected to
netfilter egress classifying.  That is only logical since it hasn't
passed through netfilter ingress classifying either.

Packets can alternatively be redirected at the netfilter layer using
nft fwd.  Such a packet *is* subjected to netfilter egress classifying
since it has reached the netfilter layer.

Internally, the skb->nf_skip_egress flag controls whether netfilter is
invoked on egress by __dev_queue_xmit().  Because __dev_queue_xmit() may
be called recursively by tunnel drivers such as vxlan, the flag is
reverted to false after sch_handle_egress().  This ensures that
netfilter is applied both on the overlay and underlying network.

Interaction between tc and netfilter is possible by setting and querying
skb->mark.

If netfilter egress classifying is not enabled on any interface, it is
patched out of the data path by way of a static_key and doesn't make a
performance difference that is discernible from noise:

Before:             1537 1538 1538 1537 1538 1537 Mb/sec
After:              1536 1534 1539 1539 1539 1540 Mb/sec
Before + tc accept: 1418 1418 1418 1419 1419 1418 Mb/sec
After  + tc accept: 1419 1424 1418 1419 1422 1420 Mb/sec
Before + tc drop:   1620 1619 1619 1619 1620 1620 Mb/sec
After  + tc drop:   1616 1624 1625 1624 1622 1619 Mb/sec

When netfilter egress classifying is enabled on at least one interface,
a minimal performance penalty is incurred for every egress packet, even
if the interface it's transmitted over doesn't have any netfilter egress
rules configured.  That is caused by checking dev->nf_hooks_egress
against NULL.

Measurements were performed on a Core i7-3615QM.  Commands to reproduce:
ip link add dev foo type dummy
ip link set dev foo up
modprobe pktgen
echo "add_device foo" > /proc/net/pktgen/kpktgend_3
samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh -i foo -n 400000000 -m "11:11:11:11:11:11" -d 1.1.1.1

Accept all traffic with tc:
tc qdisc add dev foo clsact
tc filter add dev foo egress bpf da bytecode '1,6 0 0 0,'

Drop all traffic with tc:
tc qdisc add dev foo clsact
tc filter add dev foo egress bpf da bytecode '1,6 0 0 2,'

Apply this patch when measuring packet drops to avoid errors in dmesg:
https://lore.kernel.org/netdev/a73dda33-57f4-95d8-ea51-ed483abd6a7a@iogearbox.net/

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Laura García Liébana <nevola@gmail.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-10-14 23:06:28 +02:00
..
android binder: fix freeze race 2021-09-14 08:46:08 +02:00
byteorder
caif net: caif: drop duplicate words in comments 2020-07-15 20:34:11 -07:00
can can: j1939: extend UAPI to notify about RX status 2021-08-04 12:11:52 +02:00
cifs cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
dvb Revert "media: dvb header files: move some headers to staging" 2021-08-23 09:49:09 -07:00
genwqe
hdlc wan/hdlc_x25: make lapb params configurable 2020-01-21 11:41:36 +01:00
hsi
iio iio: buffer: add ioctl() to support opening extra buffers for IIO device 2021-03-11 20:47:05 +00:00
isdn isdn/capi: check message length in capi_write() 2019-09-07 17:44:25 +02:00
misc bcm-vk: add bcm_vk UAPI 2021-01-25 18:44:44 +01:00
mmc mmc: fix compilation of user API 2020-05-28 11:22:14 +02:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2021-09-03 16:20:37 -07:00
netfilter_arp net, uapi: fix -Wpointer-arith warnings 2019-10-04 14:25:17 -07:00
netfilter_bridge uapi: revert flexible-array conversions 2020-05-04 11:30:15 -05:00
netfilter_ipv4 net, uapi: fix -Wpointer-arith warnings 2019-10-04 14:25:17 -07:00
netfilter_ipv6 net, uapi: fix -Wpointer-arith warnings 2019-10-04 14:25:17 -07:00
nfsd NFSD: remove vanity comments 2021-08-17 11:47:53 -04:00
raid raid: md_p.h: drop duplicated word in a comment 2020-07-21 22:05:32 -07:00
sched sched/uclamp: Allow to reset a task uclamp constraint value 2020-11-19 11:25:47 +01:00
spi spi: Add SPI_NO_TX/RX support 2020-12-28 14:21:31 +00:00
sunrpc
surface_aggregator platform/surface: aggregator_cdev: Allow enabling of events from user-space 2021-06-16 17:47:53 +02:00
tc_act net/sched: act_skbmod: Add SKBMOD_F_ECN option support 2021-07-28 13:19:31 +01:00
tc_ematch
usb usb: webcam: Invalid size of Processing Unit Descriptor 2021-03-18 09:02:27 +01:00
a.out.h
acct.h acct: stop using get_seconds() 2019-12-18 18:07:31 +01:00
acrn.h virt: acrn: Introduce irqfd 2021-02-09 10:58:19 +01:00
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h
am437x-vpfe.h
apm_bios.h
arcfb.h
arm_sdei.h
aspeed-lpc-ctrl.h
aspeed-p2a-ctrl.h
atalk.h
atm.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_tcp.h
atm_zatm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h atm: Replace HTTP links with HTTPS ones 2020-07-13 17:01:44 -07:00
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
audit.h audit: remove trailing spaces and tabs 2021-06-10 20:59:05 -04:00
auto_dev-ioctl.h autofs: fix doubled word 2020-08-12 10:58:00 -07:00
auto_fs.h
auto_fs4.h
auxvec.h uapi/auxvec: Define the aux vector AT_MINSIGSTKSZ 2021-05-19 11:40:15 +02:00
ax25.h
batadv_packet.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
batman_adv.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
baycom.h
bcache.h bcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket 2021-01-09 09:21:03 -07:00
bcm933xx_hcs.h
bfs_fs.h
binfmts.h binfmt_misc: pass binfmt_misc flags to the interpreter 2021-02-15 18:28:30 +01:00
blkpg.h block: update a few comments in uapi/linux/blkpg.h 2021-04-02 11:18:30 -06:00
blktrace_api.h
blkzoned.h block: fix uapi blkzoned.h comments 2020-10-09 12:47:02 -06:00
bpf.h bpf: Clarify data_len param in bpf_snprintf and bpf_seq_printf comments 2021-09-17 14:02:06 -07:00
bpf_common.h
bpf_perf_event.h
bpfilter.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
bpqether.h
bsg.h
bt-bmc.h
btf.h bpf: Support for new btf kind BTF_KIND_TAG 2021-09-14 18:45:52 -07:00
btrfs.h btrfs: initial fsverity support 2021-08-23 13:19:09 +02:00
btrfs_tree.h btrfs: initial fsverity support 2021-08-23 13:19:09 +02:00
can.h can: uapi: introduce CANFD_FDF flag for mixed content in struct canfd_frame 2021-05-27 09:42:21 +02:00
capability.h exit/bdflush: Remove the deprecated bdflush system call 2021-07-12 15:17:47 -05:00
capi.h
cciss_defs.h
cciss_ioctl.h
ccs.h media: v4l: uapi: ccs: Add CCS controls for shading correction 2021-01-12 17:31:14 +01:00
cdrom.h block: scsi_ioctl: Avoid the use of one-element arrays 2020-10-02 17:58:52 -06:00
cec-funcs.h media: uapi/linux/cec-funcs.h: set delay to 1 if unnused 2021-06-02 14:08:09 +02:00
cec.h media: include/uapi/linux/cec.h: typo: SATERDAY -> SATURDAY 2021-07-12 09:16:29 +02:00
cfm_bridge.h bridge: cfm: Kernel space implementation of CFM. CCM frame RX added. 2020-10-29 18:39:43 -07:00
cgroupstats.h
chio.h scsi: ch: add include guard to chio.h 2019-10-09 22:31:14 -04:00
close_range.h fs, close_range: add flag CLOSE_RANGE_CLOEXEC 2020-12-04 12:06:15 +01:00
cm4000_cs.h
cn_proc.h
coda.h coda: add hinting support for partial file caching 2019-07-16 19:23:23 -07:00
coff.h linux/coff.h: add include guard 2019-09-25 17:51:39 -07:00
connector.h
const.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2020-12-15 12:13:36 -08:00
coresight-stm.h coresight: stm: Support marked packet 2020-09-17 18:46:04 +02:00
cramfs_fs.h
cryptouser.h crypto: add header include guards 2019-08-02 14:44:02 +10:00
cuda.h
cxl_mem.h cxl/uapi: Fix defined but not used warnings 2021-09-07 11:39:01 -07:00
cycx_cfm.h
dcbnl.h net: Fix misspellings of "configure" and "configuration" 2019-10-28 13:41:01 -07:00
dccp.h
devlink.h devlink: report maximum number of snapshots with regions 2021-10-01 14:28:55 +01:00
dlm.h
dlm_device.h uapi: revert flexible-array conversions 2020-05-04 11:30:15 -05:00
dlm_netlink.h
dlm_plock.h
dlmconstants.h
dm-ioctl.h dm ima: measure data on table load 2021-08-10 13:32:40 -04:00
dm-log-userspace.h
dma-buf.h dma-buf: Document DMA_BUF_IOCTL_SYNC (v3) 2021-06-17 21:46:37 +02:00
dma-heap.h dma-buf: heaps: Use _IOCTL_ for userspace IOCTL identifier 2019-12-17 21:37:40 +05:30
dn.h
dns_resolver.h
dqblk_xfs.h quota: report warning limits for realtime space quotas 2021-03-18 17:03:54 +01:00
edd.h
efs_fs_sb.h
elf-em.h
elf-fdpic.h
elf.h arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS) 2021-04-13 17:31:44 +01:00
errno.h
errqueue.h icmp: support rfc 4884 2020-07-19 19:20:22 -07:00
erspan.h
ethtool.h ethtool: Add transceiver module extended state 2021-10-06 17:47:50 -07:00
ethtool_netlink.h ethtool: Add ability to control transceiver modules' power mode 2021-10-06 17:47:49 -07:00
eventpoll.h
f2fs.h f2fs: add F2FS_IOC_DECOMPRESS_FILE and F2FS_IOC_COMPRESS_FILE 2020-12-03 00:12:08 -08:00
fadvise.h
falloc.h
fanotify.h fanotify: add pidfd support to the fanotify API 2021-08-10 13:08:49 +02:00
fb.h drm/fb-helper: Fix vt restore 2020-06-24 21:34:11 +02:00
fcntl.h vfs: add faccessat2 syscall 2020-05-14 16:44:25 +02:00
fd.h floppy: cleanups: remove trailing whitespaces 2021-04-20 08:59:03 -06:00
fdreg.h floppy: add references to 82077's extra registers 2020-05-12 19:34:52 +03:00
fib_rules.h
fiemap.h A lot of bug fixes and cleanups for ext4, including: 2020-06-05 16:19:28 -07:00
filter.h
firewire-cdev.h include/linux: remove repeated words 2021-02-26 09:41:03 -08:00
firewire-constants.h
fou.h
fpga-dfl.h fpga: dfl: afu: add AFU interrupt support 2020-07-06 21:37:08 -07:00
fs.h block: add ioctl to read the disk sequence number 2021-08-02 13:37:28 -06:00
fscrypt.h fscrypt: remove kernel-internal constants from UAPI header 2020-11-16 11:41:12 -08:00
fsi.h
fsl_hypervisor.h
fsl_mc.h bus: fsl-mc: add fsl-mc userspace support 2021-01-27 15:13:52 +01:00
fsmap.h
fsverity.h fs-verity: support reading signature with ioctl 2021-02-07 14:51:19 -08:00
fuse.h virtiofs: propagate sync() to file server 2021-06-22 09:15:35 +02:00
futex.h futex: Provide FUTEX_LOCK_PI2 to support clock selection 2021-06-22 16:42:09 +02:00
gameport.h
gen_stats.h net_sched: add TCA_STATS_PKT64 attribute 2019-11-05 18:20:55 -08:00
genetlink.h genetlink: allow dumping command-specific policy 2020-10-03 14:18:29 -07:00
gfs2_ondisk.h gfs2: Add trusted xattr support 2021-02-08 13:01:24 +01:00
gpio.h gpio: uapi: use the preferred SPDX license identifier 2021-02-15 11:43:33 +01:00
gsmmux.h tty: n_gsm: add ioctl to map serial device to mux'ed tty 2019-09-04 12:43:54 +02:00
gtp.h Revert "GTP: add support for flow based tunneling API" 2021-02-04 09:29:57 -08:00
hash_info.h
hdlc.h
hdlcdrv.h
hdreg.h
hid.h
hiddev.h
hidraw.h HID: hidraw: Add additional hidraw input/output report ioctls. 2020-11-27 15:48:31 +01:00
hpet.h
hsr_netlink.h hsr: enhance netlink socket interface to support PRP 2020-07-27 12:20:40 -07:00
hw_breakpoint.h
hyperv.h hyperv: hyperv.h: drop a duplicated word 2020-07-23 17:55:20 +00:00
i2c-dev.h i2c: remove licence boilerplate from i2c-dev UAPI header 2021-01-22 09:58:57 +01:00
i2c.h i2c: uapi: add macro to describe support for all SMBus transfers 2021-01-22 09:59:00 +01:00
i2o-dev.h
i8k.h
icmp.h icmp: fix lib conflict with trinity 2021-06-03 15:31:34 -07:00
icmpv6.h ICMPV6: add support for RFC 8335 PROBE 2021-03-30 13:29:39 -07:00
idxd.h dmaengine: idxd: fix setting up priv mode for dwq 2021-08-29 19:14:20 +05:30
if.h net: Add IF_OPER_TESTING 2020-04-20 12:43:24 -07:00
if_addr.h
if_addrlabel.h
if_alg.h crypto: af_alg - avoid undefined behavior accessing salg_name 2020-11-06 14:29:11 +11:00
if_arcnet.h uapi: revert flexible-array conversions 2020-05-04 11:30:15 -05:00
if_arp.h mctp: Add initial driver infrastructure 2021-07-29 15:06:50 +01:00
if_bonding.h treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
if_bridge.h net: bridge: vlan: convert mcast router global option to per-vlan entry 2021-08-20 15:00:35 +01:00
if_cablemodem.h
if_eql.h
if_ether.h mctp: Add device handling and netlink interface 2021-07-29 15:06:50 +01:00
if_fc.h
if_fddi.h FDDI: if_fddi.h: Update my e-mail address 2021-03-10 12:45:16 -08:00
if_hippi.h
if_infiniband.h
if_link.h ipv6: add IFLA_INET6_RA_MTU to expose mtu value 2021-08-27 17:29:18 -07:00
if_ltalk.h
if_macsec.h macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw) 2020-03-16 01:42:31 -07:00
if_packet.h net/packet: make packet_fanout.arr size configurable up to 64K 2020-11-09 16:41:40 -08:00
if_phonet.h
if_plip.h
if_ppp.h
if_pppol2tp.h l2tp: remove tunnel and session debug flags field 2020-08-22 12:44:37 -07:00
if_pppox.h
if_slip.h
if_team.h
if_tun.h
if_tunnel.h Revert "GTP: add support for flow based tunneling API" 2021-02-04 09:29:57 -08:00
if_vlan.h
if_x25.h docs: networking: convert x25-iface.txt to ReST 2020-05-01 12:24:40 -07:00
if_xdp.h xsk: Add new statistics 2020-07-13 15:32:56 -07:00
ife.h
igmp.h
ila.h
in.h net/ipv4/ipv6: Replace one-element arraya with flexible-array members 2021-08-05 11:46:42 +01:00
in6.h ipv6: ioam: Data plane support for Pre-allocated Trace 2021-07-21 08:14:33 -07:00
in_route.h
inet_diag.h ip: expose inet sockopts through inet_diag 2020-09-03 15:17:28 -07:00
inotify.h
input-event-codes.h HID: hid-input: add mapping for emoji picker key 2021-05-05 14:31:05 +02:00
input.h include/linux: remove repeated words 2021-02-26 09:41:03 -08:00
io_uring.h io-wq: provide IO_WQ_* constants for IORING_REGISTER_IOWQ_MAX_WORKERS arg items 2021-09-13 10:38:13 -06:00
ioam6.h ipv6: ioam: Support for IOAM injection with lwtunnels 2021-07-21 08:14:33 -07:00
ioam6_genl.h ipv6: ioam: IOAM Generic Netlink API 2021-07-21 08:14:33 -07:00
ioam6_iptunnel.h ipv6: ioam: Add support for the ip6ip6 encapsulation 2021-10-04 12:53:35 +01:00
ioctl.h
iommu.h iommu/vt-d: Enable write protect propagation from guest 2021-03-18 11:42:46 +01:00
ioprio.h block: fix default IO priority handling 2021-08-18 07:23:15 -06:00
ip.h
ip6_tunnel.h
ip_vs.h ipvs: allow tunneling with gre encapsulation 2019-07-04 02:29:49 +02:00
ipc.h
ipmi.h
ipmi_bmc.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
ipmi_msgdefs.h ipmi:msghandler: retry to get device id on an error 2020-09-15 09:57:45 -05:00
ipsec.h
ipv6.h ipv6: ioam: Data plane support for Pre-allocated Trace 2021-07-21 08:14:33 -07:00
ipv6_route.h
irqnr.h
iso_fs.h
isst_if.h platform/x86: ISST: drop a duplicated word in isst_if.h 2020-07-27 16:34:12 +03:00
ivtv.h
ivtvfb.h
jffs2.h jffs2: Remove C++ style comments from uapi header 2019-08-22 17:24:51 +02:00
joystick.h
kcm.h
kcmp.h
kcov.h kcov: fix struct layout for kcov_remote_arg 2020-01-04 13:55:09 -08:00
kd.h console: Delete unused con_font_copy() callback implementations 2020-11-16 16:27:03 +01:00
kdev_t.h
kernel-page-flags.h
kernel.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2020-12-15 12:13:36 -08:00
kernelcapi.h
kexec.h RISC-V: Add EM_RISCV to kexec UAPI header 2021-04-26 08:25:20 -07:00
keyboard.h vt: keyboard, sort key types by their number 2020-11-04 16:43:38 +01:00
keyctl.h watch_queue: Add a key/keyring notification facility 2020-05-19 15:19:06 +01:00
kfd_ioctl.h drm/amdkfd: Allow querying SVM attributes that are clear 2021-08-06 16:12:32 -04:00
kvm.h KVM: stats: Support linear and logarithmic histogram statistics 2021-08-20 16:06:32 -04:00
kvm_para.h KVM: X86: Introduce KVM_HC_MAP_GPA_RANGE hypercall 2021-06-17 14:25:39 -04:00
l2tp.h net: l2tp: reduce log level of messages in receive path, add counter instead 2021-03-03 16:55:02 -08:00
landlock.h landlock: Enable user space to infer supported features 2021-04-22 12:22:11 -07:00
libc-compat.h
limits.h
lirc.h media: lirc: remove out of date comment 2021-05-21 15:03:50 +02:00
llc.h
loop.h loop: Add LOOP_CONFIGURE ioctl 2020-05-21 08:20:35 -06:00
lp.h
lwtunnel.h ipv6: ioam: Support for IOAM injection with lwtunnels 2021-07-21 08:14:33 -07:00
magic.h mm: introduce memfd_secret system call to create "secret" memory areas 2021-07-08 11:48:21 -07:00
major.h tty: cyclades, remove this orphan 2021-03-10 09:34:06 +01:00
map_to_7segment.h uapi: map_to_7segment: Remove licence boilerplate 2021-03-24 08:26:29 +01:00
matroxfb.h
max2175.h
mctp.h mctp: Allow per-netns default networks 2021-07-29 15:06:50 +01:00
mdio.h net: phy: add constants for 2.5G and 5G speed in PCS speed register 2021-04-08 13:15:33 -07:00
media-bus-format.h media updates for v5.11-rc1 2020-12-14 11:47:37 -08:00
media.h media: uapi: Add an entity type for Image Signal Processors 2021-01-12 17:05:37 +01:00
mei.h mei: add connect with vtag ioctl 2020-08-18 15:44:44 +02:00
membarrier.h rseq/membarrier: Add MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ 2020-09-25 14:23:27 +02:00
memfd.h
mempolicy.h mm/mempolicy: add MPOL_PREFERRED_MANY for multiple preferred nodes 2021-09-03 09:58:17 -07:00
meye.h
mii.h ethtool: provide UAPI for PHY master/slave configuration. 2020-05-06 17:45:45 -07:00
minix_fs.h
mman.h powerpc/8xx: Support 16k hugepages with 4k pages 2020-09-15 22:13:31 +10:00
mmtimer.h
module.h
mount.h move_mount: allow to add a mount into an existing group 2021-07-26 14:45:18 +02:00
mpls.h
mpls_iptunnel.h
mptcp.h mptcp: add MPTCP_SUBFLOW_ADDRS getsockopt support 2021-09-18 14:20:01 +01:00
mqueue.h
mroute.h ipmr: Add high byte of VIF ID to igmpmsg 2020-09-10 12:25:51 -07:00
mroute6.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2020-12-15 12:13:36 -08:00
mrp_bridge.h net: mrp: move struct definitions out of uapi 2021-01-23 12:38:42 -08:00
msdos_fs.h
msg.h y2038: uapi: change __kernel_time_t to __kernel_old_time_t 2019-11-15 14:38:29 +01:00
mtio.h
nbd-netlink.h nbd: provide a way for userspace processes to identify device backends 2021-06-30 15:34:04 -06:00
nbd.h
ncsi.h
ndctl.h ACPI: NFIT: Define runtime firmware activation commands 2020-07-25 19:34:47 -06:00
neighbour.h net: bridge: fix flags interpretation for extern learn fdb entries 2021-08-10 11:29:39 -07:00
net.h Revert "net: add pf_family_names[] for protocol family" 2021-06-18 13:02:45 -07:00
net_dropmon.h uapi: revert flexible-array conversions 2020-05-04 11:30:15 -05:00
net_namespace.h
net_tstamp.h net: sock: extend SO_TIMESTAMPING for PHC binding 2021-07-01 13:08:18 -07:00
netconf.h
netdevice.h
netfilter.h netfilter: Introduce egress hook 2021-10-14 23:06:28 +02:00
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netlink.h netlink: simplify NLMSG_DATA with NLMSG_HDRLEN 2021-06-10 12:51:33 -07:00
netlink_diag.h
netrom.h
nexthop.h nexthop: Add netlink defines and enumerators for resilient NH groups 2021-03-11 16:12:59 -08:00
nfc.h
nfs.h
nfs2.h
nfs3.h NFSD: Update the SETATTR3args decoder to use struct xdr_stream 2021-01-25 09:36:25 -05:00
nfs4.h treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
nfs4_mount.h
nfs_fs.h NFSv4.2: add client side xattr caching. 2020-07-13 17:52:46 -04:00
nfs_idmap.h
nfs_mount.h
nfsacl.h NFSACL: Replace PROC() macro with open code 2020-10-02 09:37:41 -04:00
nilfs2_api.h
nilfs2_ondisk.h nilfs2: do not use unexported cpu_to_le32()/le32_to_cpu() in uapi header 2019-07-12 11:05:40 -07:00
nitro_enclaves.h nitro_enclaves: Add ioctl interface definition 2020-09-22 13:58:40 +02:00
nl80211-vnd-intel.h nl80211: vendor-cmd: add Intel vendor commands for iwlmei usage 2021-08-13 09:50:24 +02:00
nl80211.h nl80211: add support for BSS coloring 2021-08-17 11:58:21 +02:00
nsfs.h
nubus.h
nvme_ioctl.h nvme: change nvme_passthru_cmd64 to explicitly mark rsvd 2019-11-06 06:17:38 +09:00
nvram.h
omap3isp.h
omapfb.h
oom.h
openat2.h fs: expose LOOKUP_CACHED through openat2() RESOLVE_CACHED 2021-01-04 11:42:26 -05:00
openvswitch.h openvswitch: fix alignment issues 2021-07-27 11:48:42 +01:00
packet_diag.h
param.h
parport.h
patchkey.h
pci.h
pci_regs.h pci-v5.11-changes 2020-12-15 16:49:59 -08:00
pcitest.h PCI: Fix kernel-doc formatting 2021-07-06 10:37:46 -05:00
perf_event.h Merge branch 'for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-05-21 06:12:52 -10:00
personality.h
pfkeyv2.h
pg.h block: pg: add header include guard 2019-10-02 20:32:27 -06:00
phantom.h
phonet.h
pidfd.h pidfd: support PIDFD_NONBLOCK in pidfd_open() 2020-09-04 12:34:50 +02:00
pkt_cls.h net_sched: refactor TC action init API 2021-08-02 10:24:38 +01:00
pkt_sched.h fq_codel: reject silly quantum parameters 2021-09-04 10:49:46 +01:00
pktcdvd.h
pmu.h
poll.h
posix_acl.h
posix_acl_xattr.h
posix_types.h
ppdev.h ppdev: add header include guard 2019-07-30 20:34:34 +02:00
ppp-comp.h
ppp-ioctl.h ppp: Fix PPPIOCUNBRIDGECHAN request number 2020-12-21 17:36:48 -08:00
ppp_defs.h y2038: syscall implementation cleanups 2019-12-01 14:00:59 -08:00
pps.h
pr.h
prctl.h arm64 updates for 5.15: 2021-09-01 15:04:29 -07:00
psample.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-03-25 15:31:22 -07:00
psci.h
psp-sev.h crypto: ccp - Add support for SEV-ES to the PSP driver 2020-04-30 15:19:33 +10:00
ptp_clock.h ptp: introduce a phase offset in the periodic output request 2020-07-19 19:22:56 -07:00
ptrace.h rseq, ptrace: Add PTRACE_GET_RSEQ_CONFIGURATION request 2021-03-17 16:15:39 +01:00
qemu_fw_cfg.h
qnx4_fs.h
qnxtypes.h
qrtr.h
quota.h
radeonfb.h
random.h random: ignore GRND_RANDOM in getentropy(2) 2020-01-07 16:07:01 -05:00
rds.h rds: transport module should be auto loaded when transport is set 2020-06-25 16:26:25 -07:00
reboot.h
reiserfs_fs.h
reiserfs_xattr.h
remoteproc_cdev.h remoteproc: Add remoteproc character device interface 2020-08-04 20:16:37 -07:00
resource.h y2038: rusage: use __kernel_old_timeval 2019-11-15 14:38:29 +01:00
rfkill.h rfkill: revert back to old userspace API by default 2021-04-08 10:14:45 +02:00
rio_cm_cdev.h
rio_mport_cdev.h
rkisp1-config.h media: rkisp1: uapi: document which flags/structs relate to statistics config 2021-04-06 10:29:56 +02:00
romfs_fs.h
rose.h
route.h
rpl.h uapi: fix big endian definition of ipv6_rpl_sr_hdr 2021-01-25 15:14:16 -08:00
rpl_iptunnel.h net: ipv6: add rpl sr tunnel 2020-03-29 22:30:57 -07:00
rpmsg.h rpmsg: Add short description of the IOCTL defined in UAPI. 2021-03-17 14:16:26 -05:00
rpmsg_types.h rpmsg: Introduce __rpmsg{16|32|64} types 2020-11-24 10:10:59 -06:00
rseq.h
rtc.h rtc: introduce features bitfield 2021-01-16 23:19:26 +01:00
rtnetlink.h Add Open Routing Protocol ID to rtnetlink.h 2021-03-24 16:31:23 -07:00
rxrpc.h rxrpc: Fix accept on a connection that need securing 2020-10-05 16:35:57 +01:00
scc.h linux/scc.h: make uapi linux/scc.h self-contained 2019-12-04 19:44:12 -08:00
sched.h clone3: allow spawning processes into cgroups 2020-02-12 17:57:51 -05:00
scif_ioctl.h
screen_info.h
sctp.h sctp: add SCTP_PLPMTUD_PROBE_INTERVAL sockopt for sock/asoc/transport 2021-06-22 11:28:51 -07:00
seccomp.h seccomp: Support atomic "addfd + send reply" 2021-06-28 12:49:52 -07:00
securebits.h
sed-opal.h block: sed-opal: Add support to read/write opal tables generically 2019-11-04 07:11:31 -07:00
seg6.h
seg6_genl.h
seg6_hmac.h
seg6_iptunnel.h seg6_iptunnel: Refactor seg6_lwt_headroom out of uapi header 2020-08-03 17:57:40 -07:00
seg6_local.h seg6: add support for SRv6 End.DT46 Behavior 2021-06-18 11:35:47 -07:00
selinux_netlink.h
sem.h y2038: uapi: change __kernel_time_t to __kernel_old_time_t 2019-11-15 14:38:29 +01:00
serial.h tty: cyclades, remove this orphan 2021-03-10 09:34:06 +01:00
serial_core.h tty: serial: Drop unused efm32 serial driver 2021-01-15 17:14:49 +01:00
serial_reg.h serial: 8250: Define RX trigger levels for OxSemi 950 devices 2021-07-27 12:05:46 +02:00
serio.h Input: avoid BIT() macro usage in the serio.h UAPI header 2020-03-24 15:59:34 -07:00
shm.h y2038: uapi: change __kernel_time_t to __kernel_old_time_t 2019-11-15 14:38:29 +01:00
signal.h
signalfd.h signalfd: Remove SIL_PERF_EVENT fields from signalfd_siginfo 2021-05-18 16:20:54 -05:00
smc.h net/smc: add generic netlink support for system EID 2021-09-14 12:49:10 +01:00
smc_diag.h
smiapp.h
snmp.h tcp: Add stats for socket migration. 2021-06-23 12:56:08 -07:00
sock_diag.h bpf: INET_DIAG support in bpf_sk_storage 2020-02-27 18:50:19 -08:00
socket.h sock: allow reading and changing sk_userlocks with setsockopt 2021-08-04 12:52:03 +01:00
sockios.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h uapi: fix statx attribute value overlap for DAX & MOUNT_ROOT 2020-12-03 10:03:14 -08:00
stddef.h
stm.h
string.h
suspend_ioctls.h
swab.h include/uapi/linux/swab.h: fix userspace breakage, use __BITS_PER_LONG for swap 2020-02-21 11:22:15 -08:00
switchtec_ioctl.h PCI/switchtec: Add Gen4 flash information interface support 2020-01-15 11:00:39 -06:00
sync_file.h
synclink.h
sysctl.h net: allow user to set metric on default route learned via Router Advertisement 2021-01-26 18:39:45 -08:00
sysinfo.h
target_core_user.h scsi: target: tcmu: Add new feature KEEP_BUF 2021-08-03 07:27:42 -04:00
taskstats.h tsacct: add 64-bit btime field 2019-12-18 18:07:31 +01:00
tcp.h tcp: Sanitize CMSG flags and reserved args in tcp_zerocopy_receive. 2021-02-11 18:25:05 -08:00
tcp_metrics.h
tee.h tee: fix some comment typos in header files 2021-02-02 14:50:15 +01:00
termios.h tty: drop termiox user definitions 2021-01-07 16:17:32 +01:00
thermal.h thermal: Fix spelling mistake "disabed" -> "disabled" 2021-03-11 12:13:08 +01:00
time.h y2038: hide timeval/timespec/itimerval/itimerspec types 2020-02-21 11:22:15 -08:00
time_types.h y2038: rename itimerval to __kernel_old_itimerval 2019-12-18 18:07:33 +01:00
timerfd.h
times.h
timex.h y2038: sparc: remove use of struct timex 2019-12-18 18:07:33 +01:00
tiocl.h
tipc.h tipc: add automatic rekeying for encryption key 2020-09-18 13:58:37 -07:00
tipc_config.h net, uapi: fix -Wpointer-arith warnings 2019-10-04 14:25:17 -07:00
tipc_netlink.h tipc: add automatic rekeying for encryption key 2020-09-18 13:58:37 -07:00
tipc_sockets_diag.h
tls.h net/tls: support SM4 GCM/CCM algorithm 2021-09-16 14:36:26 +01:00
toshiba.h
tty.h
tty_flags.h tty: add ASYNC_SPLIT_TERMIOS to deprecation mask 2021-04-10 10:36:34 +02:00
types.h include/: replace HTTP links with HTTPS ones 2020-08-12 10:57:59 -07:00
udf_fs_i.h
udmabuf.h
udp.h xfrm: add espintcp (RFC 8229) 2019-12-09 09:59:07 +01:00
uhid.h
uinput.h
uio.h
uleds.h
ultrasound.h
um_timetravel.h um: Implement time-travel=ext 2020-03-29 23:29:08 +02:00
un.h
unistd.h
unix_diag.h
usbdevice_fs.h USB: usbfs: Add a capability flag for runtime suspend 2019-08-14 16:52:13 +02:00
usbip.h
userfaultfd.h userfaultfd/shmem: advertise shmem minor fault support 2021-06-30 20:47:27 -07:00
userio.h
utime.h y2038: uapi: change __kernel_time_t to __kernel_old_time_t 2019-11-15 14:38:29 +01:00
utsname.h
uuid.h
uvcvideo.h media: vpbe_osd.h/uvcvideo.h includes: fix trivial kernel-doc warnings 2021-03-22 10:24:07 +01:00
v4l2-common.h
v4l2-controls.h media: v4l2-ctrls: Add intra-refresh period control 2021-08-04 14:43:52 +02:00
v4l2-dv-timings.h
v4l2-mediabus.h media: v4l2: extend the CSC API to subdevice. 2020-09-26 10:22:29 +02:00
v4l2-subdev.h media: core headers: fix kernel-doc warnings 2021-03-22 10:22:22 +01:00
vbox_err.h
vbox_vmmdev_types.h virt: vbox: Add a few new vmmdev request types to the userspace whitelist 2020-07-10 13:45:32 +02:00
vboxguest.h virt: vbox: Add support for the new VBG_IOCTL_ACQUIRE_GUEST_CAPABILITIES ioctl 2020-07-10 13:45:32 +02:00
vdpa.h vdpa: Enable user to query vdpa device info 2021-02-23 07:52:56 -05:00
vduse.h vduse: Introduce VDUSE - vDPA Device in Userspace 2021-09-06 07:20:58 -04:00
veth.h
vfio.h vfio/pci: Revert nvlink removal uAPI breakage 2021-05-05 10:19:41 -06:00
vfio_ccw.h vfio-ccw: Introduce a new CRW region 2020-06-03 11:27:43 +02:00
vfio_zdev.h vfio: Introduce capability definitions for VFIO_DEVICE_GET_INFO 2020-10-07 14:23:44 -06:00
vhost.h vhost: vdpa: report iova range 2020-10-23 11:55:28 -04:00
vhost_types.h vhost: vdpa: report iova range 2020-10-23 11:55:28 -04:00
videodev2.h media: uapi: move MPEG-2 stateless controls out of staging 2021-05-23 19:21:31 +02:00
virtio_9p.h virtio_9p: correct tags for config space fields 2020-08-05 09:30:19 -04:00
virtio_balloon.h virtio_balloon: correct tags for config space fields 2020-08-05 09:30:20 -04:00
virtio_blk.h virtio_blk: correct tags for config space fields 2020-08-05 11:08:39 -04:00
virtio_bt.h Bluetooth: Add support for virtio transport driver 2021-04-08 12:26:34 +02:00
virtio_config.h virtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORM 2020-08-03 16:11:42 -04:00
virtio_console.h virtio_console: correct tags for config space fields 2020-08-05 11:08:39 -04:00
virtio_crypto.h virtio_crypto: correct tags for config space fields 2020-08-05 11:08:39 -04:00
virtio_fs.h virtiofs: set up virtio_fs dax_device 2020-09-10 11:39:22 +02:00
virtio_gpio.h gpio: virtio: Fix sparse warnings 2021-08-31 11:07:05 +02:00
virtio_gpu.h virtio-gpu api: Add a comment on VIRTIO_GPU_SHM_ID_HOST_VISIBLE 2020-11-20 10:44:41 +01:00
virtio_i2c.h i2c: virtio: add a virtio i2c frontend driver 2021-08-19 21:21:19 +02:00
virtio_ids.h virtio,vdpa,vhost: features, fixes 2021-09-11 14:48:42 -07:00
virtio_input.h virtio_input: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_iommu.h virtio_iommu: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_mem.h virtio_mem: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_mmio.h virtio: Implement get_shm_region for MMIO transport 2020-09-10 10:05:58 +02:00
virtio_net.h virtio_net: use LE accessors for speed/duplex 2020-08-05 11:08:41 -04:00
virtio_pci.h virtio: Implement get_shm_region for PCI transport 2020-09-10 10:05:58 +02:00
virtio_pcidev.h um: virt-pci: fix uapi documentation 2021-08-26 22:28:03 +02:00
virtio_pmem.h virtio_pmem: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_ring.h virtio: force spec specified alignment on types 2020-06-02 02:45:13 -04:00
virtio_rng.h
virtio_scmi.h firmware: arm_scmi: Add virtio transport 2021-08-05 10:24:08 +01:00
virtio_scsi.h virtio_scsi: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_snd.h ALSA: virtio: add virtio sound driver 2021-03-07 09:07:16 +01:00
virtio_types.h
virtio_vsock.h virtio/vsock: add 'VIRTIO_VSOCK_SEQ_EOR' bit. 2021-09-05 16:23:09 -04:00
vm_sockets.h vm_sockets: Add VMADDR_FLAG_TO_HOST vsock flag 2020-12-14 19:33:39 -08:00
vm_sockets_diag.h
vmcore.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
vsockmon.h
vt.h
vtpm_proxy.h
wait.h pidfd: add P_PIDFD to waitid() 2019-08-01 21:49:46 +02:00
watch_queue.h watch_queue: Add a key/keyring notification facility 2020-05-19 15:19:06 +01:00
watchdog.h
wireguard.h wireguard: global: fix spelling mistakes in comments 2019-12-16 19:22:22 -08:00
wireless.h net/wireless: wireless.h: drop duplicate word in comments 2020-07-31 09:24:23 +02:00
wmi.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
wwan.h wwan: add interface creation support 2021-06-12 13:16:45 -07:00
x25.h
xattr.h ext4: support xattr gnu.* namespace for the Hurd 2020-06-12 13:23:34 -04:00
xdp_diag.h xsk: Add xdp statistics to xsk_diag 2020-07-13 15:32:56 -07:00
xfrm.h net: xfrm: fix shift-out-of-bounce 2021-07-29 08:04:10 +02:00
xilinx-v4l2-controls.h
zorro.h
zorro_ids.h