Daniel Borkmann d67b9cd28c xdp: refine xdp api with regards to generic xdp ... While working on the iproute2 generic XDP frontend, I noticed that as of right now it's possible to have native *and* generic XDP programs loaded both at the same time for the case when a driver supports native XDP. The intended model for generic XDP from b5cdae3291f7 ("net: Generic XDP") is, however, that only one out of the two can be present at once which is also indicated as such in the XDP netlink dump part. The main rationale for generic XDP is to ease accessibility (in case a driver does not yet have XDP support) and to generically provide a semantical model as an example for driver developers wanting to add XDP support. The generic XDP option for an XDP aware driver can still be useful for comparing and testing both implementations. However, it is not intended to have a second XDP processing stage or layer with exactly the same functionality of the first native stage. Only reason could be to have a partial fallback for future XDP features that are not supported yet in the native implementation and we probably also shouldn't strive for such fallback and instead encourage native feature support in the first place. Given there's currently no such fallback issue or use case, lets not go there yet if we don't need to. Therefore, change semantics for loading XDP and bail out if the user tries to load a generic XDP program when a native one is present and vice versa. Another alternative to bailing out would be to handle the transition from one flavor to another gracefully, but that would require to bring the device down, exchange both types of programs, and bring it up again in order to avoid a tiny window where a packet could hit both hooks. Given this complicates the logic for just a debugging feature in the native case, I went with the simpler variant. For the dump, remove IFLA_XDP_FLAGS that was added with b5cdae3291f7 and reuse IFLA_XDP_ATTACHED for indicating the mode. Dumping all or just a subset of flags that were used for loading the XDP prog is suboptimal in the long run since not all flags are useful for dumping and if we start to reuse the same flag definitions for load and dump, then we'll waste bit space. What we really just want is to dump the mode for now. Current IFLA_XDP_ATTACHED semantics are: nothing was installed (0), a program is running at the native driver layer (1). Thus, add a mode that says that a program is running at generic XDP layer (2). Applications will handle this fine in that older binaries will just indicate that something is attached at XDP layer, effectively this is similar to IFLA_XDP_FLAGS attr that we would have had modulo the redundancy. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-05-11 21:30:57 -04:00
..
android	binder: Add support for file-descriptor arrays	2017-02-10 16:00:01 +01:00
byteorder
caif
can	can: add Virtual CAN Tunnel driver (vxcan)	2017-04-25 09:04:30 +02:00
cifs
dvb
genwqe
hdlc
hsi
iio	iio: Add channel for Gravity	2017-01-05 13:02:25 +00:00
isdn
mmc
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf	2017-05-03 10:11:26 -04:00
netfilter_arp
netfilter_bridge
netfilter_ipv4
netfilter_ipv6
nfsd	nfsd: opt in to labeled nfs per export	2017-01-31 12:31:54 -05:00
raid	uapi: fix linux/raid/md_p.h userspace compilation error	2017-04-20 09:41:45 -07:00
sched	sched/headers: Move various ABI definitions to <uapi/linux/sched/types.h>	2017-03-02 08:42:42 +01:00
spi
sunrpc
tc_act	net/act_pedit: Introduce 'add' operation	2017-02-10 13:18:33 -05:00
tc_ematch
usb	usb: fix some references for /proc/bus/usb	2017-04-18 16:54:19 +02:00
wimax
a.out.h
acct.h
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h
am437x-vpfe.h
apm_bios.h
arcfb.h
aspeed-lpc-ctrl.h	aspeed-lpc-ctrl: include linux/types.h for uapi header	2017-04-08 17:37:20 +02:00
atalk.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_tcp.h
atm_zatm.h
atm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
audit.h	Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit	2017-02-21 13:25:50 -08:00
auto_dev-ioctl.h	autofs: remove duplicated AUTOFS_DEV_IOCTL_SIZE definition	2017-02-27 18:43:45 -08:00
auto_fs4.h	autofs: add command enum/macros for root-dir ioctls	2017-02-27 18:43:45 -08:00
auto_fs.h	autofs: add command enum/macros for root-dir ioctls	2017-02-27 18:43:45 -08:00
auxvec.h
ax25.h
b1lli.h
batman_adv.h	batman-adv: update copyright years for 2017	2017-01-26 08:34:19 +01:00
baycom.h
bcache.h
bcm933xx_hcs.h
bfs_fs.h
binfmts.h
blkpg.h
blktrace_api.h
blkzoned.h
bpf_common.h
bpf_perf_event.h
bpf.h	bpf: Add strict alignment flag for BPF_PROG_LOAD.	2017-05-11 14:19:00 -04:00
bpqether.h
bsg.h
bt-bmc.h
btrfs_tree.h
btrfs.h	btrfs: remove btrfs_err_str function from uapi/linux/btrfs.h	2017-03-07 14:10:17 +01:00
can.h
capability.h	usb: fix some references for /proc/bus/usb	2017-04-18 16:54:19 +02:00
capi.h
cciss_defs.h
cciss_ioctl.h
cdrom.h
cec-funcs.h	[media] cec: fix report_current_latency	2016-12-21 06:59:13 -02:00
cec.h	[media] cec.h: small typo fix	2017-03-03 07:24:00 -03:00
cgroupstats.h
chio.h
cm4000_cs.h
cn_proc.h
coda_psdev.h
coda.h
coff.h
connector.h
const.h
coresight-stm.h
cramfs_fs.h
cryptouser.h	crypto: user - Prepare for CRYPTO_MAX_ALG_NAME expansion	2017-04-10 19:17:26 +08:00
cuda.h
cyclades.h
cycx_cfm.h
dcbnl.h
dccp.h
devlink.h	net/devlink: Add E-Switch encapsulation control	2017-04-22 20:26:37 +03:00
dlm_device.h
dlm_netlink.h
dlm_plock.h
dlm.h
dlmconstants.h
dm-ioctl.h
dm-log-userspace.h
dma-buf.h
dn.h
dqblk_xfs.h
edd.h
efs_fs_sb.h
elf-em.h	avr32: remove support for AVR32 architecture	2017-05-01 09:27:15 +02:00
elf-fdpic.h
elf.h	ARC updates for 4.12	2017-05-09 10:10:15 -07:00
elfcore.h
errno.h
errqueue.h
ethtool.h	IB/ipoib: add get_link_ksettings in ethtool	2017-05-04 19:31:46 -04:00
eventpoll.h	eventpoll.h: add missing epoll event masks	2017-03-14 09:47:33 +08:00
fadvise.h
falloc.h
fanotify.h
fb.h
fcntl.h	statx: Add a system call to make enhanced file info available	2017-03-02 20:51:15 -05:00
fd.h
fdreg.h
fib_rules.h
fiemap.h
filter.h
firewire-cdev.h
firewire-constants.h
flat.h
fou.h
fs.h	fscrypt: Remove __packed from fscrypt_policy	2017-04-30 01:26:34 -04:00
fsl_hypervisor.h
fsmap.h	vfs: add common GETFSMAP ioctl definitions	2017-04-03 15:18:16 -07:00
fuse.h
futex.h
gameport.h
gen_stats.h
genetlink.h
gfs2_ondisk.h
gigaset_dev.h
gpio.h
gsmmux.h
gtp.h	gtp: rename SGSN netlink attribute	2017-03-25 20:11:19 -07:00
hash_info.h
hdlc.h
hdlcdrv.h
hdreg.h
hid.h
hiddev.h
hidraw.h
hpet.h
hsr_netlink.h
hw_breakpoint.h
hyperv.h
hysdn_if.h
i2c-dev.h
i2c.h
i2o-dev.h
i8k.h
icmp.h
icmpv6.h
if_addr.h
if_addrlabel.h
if_alg.h
if_arcnet.h
if_arp.h	VSOCK: Add vsockmon tap functions	2017-04-24 12:35:56 -04:00
if_bonding.h
if_bridge.h	bridge: uapi: add per vlan tunnel info	2017-02-03 15:21:21 -05:00
if_cablemodem.h
if_eql.h
if_ether.h	RDMA: Adding ethertype ETH_P_IBOE	2017-01-10 14:05:11 -05:00
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h
if_link.h	xdp: refine xdp api with regards to generic xdp	2017-05-11 21:30:57 -04:00
if_ltalk.h
if_macsec.h
if_packet.h	packet: add PACKET_FANOUT_FLAG_UNIQUEID to assign new fanout group id.	2017-04-24 12:46:00 -04:00
if_phonet.h
if_plip.h
if_ppp.h
if_pppol2tp.h
if_pppox.h
if_slip.h
if_team.h
if_tun.h
if_tunnel.h	ip6_tunnel: Allow policy-based routing through tunnels	2017-04-21 13:21:30 -04:00
if_vlan.h
if_x25.h
if.h	uapi: fix linux/if.h userspace compilation errors	2017-02-22 16:09:04 -05:00
ife.h	net: Introduce ife encapsulation module	2017-02-03 15:16:45 -05:00
igmp.h	bridge: sparse fixes in br_ip6_multicast_alloc_query()	2017-01-17 15:22:05 -05:00
ila.h
in6.h
in_route.h
in.h
inet_diag.h
inotify.h
input-event-codes.h	HID: wacom: generic: add 3 tablet touch keys	2017-03-06 14:06:51 +01:00
input.h	HID: sony: Report DS4 motion sensors through a separate device	2017-03-21 15:11:32 +01:00
ioctl.h
ip6_tunnel.h	uapi: fix linux/ip6_tunnel.h userspace compilation errors	2017-02-23 10:46:07 -05:00
ip_vs.h
ip.h
ipc.h
ipmi_msgdefs.h
ipmi.h	scripts/spelling.txt: add regsiter -> register spelling mistake	2017-05-08 17:15:13 -07:00
ipsec.h
ipv6_route.h	net: ipv6: RTF_PCPU should not be settable from userspace	2017-04-21 13:55:33 -04:00
ipv6.h	net: ipv6: Add sysctl for minimum prefix len acceptable in RIOs.	2017-03-22 14:20:54 -07:00
ipx.h
irda.h
irqnr.h
isdn_divertif.h
isdn_ppp.h
isdn.h
isdnif.h
iso_fs.h
ivtv.h
ivtvfb.h
ixjuser.h
jffs2.h
joystick.h
Kbuild	pci-v4.12-changes	2017-05-08 19:03:25 -07:00
kcm.h
kcmp.h
kcov.h
kd.h
kdev_t.h
kernel-page-flags.h
kernel.h
kernelcapi.h
kexec.h
keyboard.h
keyctl.h	KEYS: add SP800-56A KDF support for DH	2017-04-04 22:33:38 +01:00
kfd_ioctl.h
kvm_para.h	KVM: x86: add KVM_HC_CLOCK_PAIRING hypercall	2017-02-07 18:16:45 +01:00
kvm.h	KVM/ARM Changes for v4.12.	2017-04-27 17:33:14 +02:00
l2tp.h	uapi: fix linux/if_pppol2tp.h userspace compilation errors	2017-02-14 22:18:05 -05:00
libc-compat.h
lightnvm.h	lightnvm: allow to init targets on factory mode	2017-04-16 10:06:25 -06:00
limits.h
lirc.h
llc.h	uapi: fix linux/llc.h userspace compilation error	2017-02-23 10:46:08 -05:00
loop.h
lp.h
lwtunnel.h
magic.h
major.h
map_to_7segment.h
matroxfb.h
mdio.h
media-bus-format.h	media: uapi: Add RGB and YUV bus formats for Synopsys HDMI TX Controller	2017-04-03 11:45:08 -04:00
media.h
mei.h
membarrier.h
memfd.h
mempolicy.h
meye.h
mic_common.h
mic_ioctl.h
mii.h
minix_fs.h
mman.h
mmtimer.h
module.h
mpls_iptunnel.h	mpls: allow TTL propagation from IP packets to be configured	2017-03-13 15:29:22 -07:00
mpls.h	mpls: Packet stats	2017-01-17 14:38:43 -05:00
mqueue.h	uapi: mqueue.h: add missing linux/types.h include	2017-02-24 17:46:56 -08:00
mroute6.h	uapi: fix linux/mroute6.h userspace compilation errors	2017-02-19 18:15:12 -05:00
mroute.h	uapi: fix linux/mroute.h userspace compilation errors	2017-02-19 18:15:12 -05:00
msdos_fs.h
msg.h
mtio.h
n_r3964.h
nbd-netlink.h	nbd: add a status netlink command	2017-04-17 09:58:42 -06:00
nbd.h	nbd: add a flag to destroy an nbd device on disconnect	2017-04-17 09:58:42 -06:00
ncp_fs.h
ncp_mount.h
ncp_no.h
ncp.h
ndctl.h	libnvdimm: handle locked label storage areas	2017-05-04 15:41:39 -07:00
neighbour.h	vxlan: support fdb and learning in COLLECT_METADATA mode	2017-02-03 15:21:21 -05:00
net_dropmon.h
net_namespace.h
net_tstamp.h
net.h
netconf.h	net: mpls: Add support for netconf	2017-02-20 11:13:37 -05:00
netdevice.h
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netfilter.h	uapi: stop including linux/sysctl.h in uapi/linux/netfilter.h	2017-02-23 21:51:39 +01:00
netlink_diag.h	netlink/diag: report flags for netlink sockets	2017-04-05 07:13:56 -07:00
netlink.h	netlink: allow sending extended ACK with cookie on success	2017-04-13 13:58:21 -04:00
netrom.h
nfc.h
nfs2.h
nfs3.h
nfs4_mount.h
nfs4.h
nfs_fs.h
nfs_idmap.h
nfs_mount.h
nfs.h
nfsacl.h
nilfs2_api.h
nilfs2_ondisk.h
nl80211.h	nl80211: add support for BSSIDs in scheduled scan matchsets	2017-04-26 23:17:39 +02:00
nsfs.h	nsfs: Add an ioctl() to return owner UID of a userns	2017-02-03 14:35:43 +13:00
nubus.h	nubus: Add MVC and VSC video card definitions	2017-04-20 09:54:24 +02:00
nvme_ioctl.h
nvram.h
omap3isp.h
omapfb.h
oom.h
openvswitch.h	openvswitch: Add eventmask support to CT action.	2017-04-24 13:53:25 -04:00
packet_diag.h	uapi: fix linux/packet_diag.h userspace compilation error	2017-03-09 13:22:28 -08:00
param.h
parport.h
patchkey.h
pci_regs.h	pci-v4.12-changes	2017-05-08 19:03:25 -07:00
pci.h
pcitest.h	misc: Add host side PCI driver for PCI test function device	2017-04-28 10:23:19 -05:00
perf_event.h	powerpc updates for 4.12 part 1.	2017-05-05 11:36:44 -07:00
personality.h
pfkeyv2.h
pg.h
phantom.h
phonet.h
pkt_cls.h	net: sched: add helpers to handle extended actions	2017-05-02 15:33:54 -04:00
pkt_sched.h	mqprio: Change handling of hw u8 to allow for multiple hardware offload modes	2017-03-15 15:20:27 -07:00
pktcdvd.h
pmu.h
poll.h
posix_acl_xattr.h
posix_acl.h
posix_types.h
ppdev.h
ppp_defs.h
ppp-comp.h
ppp-ioctl.h
pps.h	pps: fix padding issue with PPS_FETCH for ioctl_compat	2017-03-17 15:10:49 +09:00
pr.h
prctl.h
psample.h	net: Introduce psample, a new genetlink channel for packet sampling	2017-01-24 13:44:28 -05:00
psci.h
ptp_clock.h
ptrace.h
qnx4_fs.h
qnxtypes.h
qrtr.h
quota.h
radeonfb.h
random.h
raw.h
rds.h	uapi: fix linux/rds.h userspace compilation errors	2017-02-23 10:55:08 -05:00
reboot.h
reiserfs_fs.h
reiserfs_xattr.h
resource.h
rfkill.h
rio_cm_cdev.h
rio_mport_cdev.h
romfs_fs.h
rose.h
route.h
rpmsg.h	rpmsg: Driver for user space endpoint interface	2017-01-18 10:43:15 -08:00
rtc.h
rtnetlink.h	rtnetlink: Add RTM_DELNETCONF	2017-03-28 22:32:42 -07:00
scc.h
sched.h
scif_ioctl.h
screen_info.h
sctp.h	sctp: add SCTP_PR_STREAM_STATUS sockopt for prsctp	2017-04-03 14:52:35 -07:00
sdla.h
seccomp.h
securebits.h
sed-opal.h	uapi: sed-opal fix IOW for activate lsp to use correct struct	2017-02-14 19:47:16 -07:00
seg6_genl.h
seg6_hmac.h	ipv6: sr: add missing Kbuild export for header files	2017-01-16 14:47:21 -05:00
seg6_iptunnel.h	uapi: fix linux/seg6.h and linux/seg6_iptunnel.h userspace compilation errors	2017-02-23 10:55:08 -05:00
seg6.h	uapi: fix linux/seg6.h and linux/seg6_iptunnel.h userspace compilation errors	2017-02-23 10:55:08 -05:00
selinux_netlink.h
sem.h
serial_core.h	serial: 8250: Add new port type for TI DA8xx/66AK2x	2017-01-12 11:51:25 +01:00
serial_reg.h	serial: exar: Move register defines from uapi header to consumer site	2017-02-10 15:13:26 +01:00
serial.h
serio.h	[media] serio.h: add SERIO_RAINSHADOW_CEC ID	2017-04-10 12:34:01 -03:00
shm.h
signal.h
signalfd.h
smc_diag.h	smc: netlink interface for SMC sockets	2017-01-09 16:07:41 -05:00
smc.h	smc: establish pnet table management	2017-01-09 16:07:38 -05:00
smiapp.h
snmp.h	net/tcp_fastopen: Add snmp counter for blackhole detection	2017-04-24 14:27:17 -04:00
sock_diag.h
socket.h
sockios.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h	uapi: change the type of struct statx_timestamp.tv_nsec to unsigned	2017-04-26 21:19:05 -04:00
stddef.h
stm.h
string.h
suspend_ioctls.h
swab.h
switchtec_ioctl.h	switchtec: Add IOCTLs to the Switchtec driver	2017-04-12 12:23:37 -05:00
sync_file.h
synclink.h
sysctl.h	net: Remove NET_CORE_BUDGET_USECS from sysctl binary interface.	2017-04-21 15:59:52 -04:00
sysinfo.h
target_core_user.h	uapi: fix linux/target_core_user.h userspace compilation errors	2017-02-18 21:44:59 -08:00
taskstats.h
tcp_metrics.h
tcp.h	tcp: record pkts sent and retransmistted	2017-01-29 19:17:23 -05:00
telephony.h
termios.h
thermal.h
time.h
timerfd.h	timerfd: export defines to userspace	2017-01-10 18:31:55 -08:00
times.h
timex.h
tiocl.h
tipc_config.h
tipc_netlink.h
tipc.h	tipc: make replicast a user selectable option	2017-01-20 12:10:17 -05:00
toshiba.h
tty_flags.h
tty.h
types.h	linux/types.h: enable endian checks for all sparse builds	2016-12-16 00:13:39 +02:00
udf_fs_i.h
udp.h
uhid.h
uinput.h
uio.h
uleds.h
ultrasound.h
un.h	unix: add ioctl to open a unix socket file with O_PATH	2017-02-02 21:58:02 -05:00
unistd.h
unix_diag.h
usbdevice_fs.h
usbip.h
userfaultfd.h	userfaultfd: non-cooperative: rollback userfaultfd_exit	2017-03-09 17:01:09 -08:00
userio.h
utime.h
utsname.h
uuid.h
uvcvideo.h
v4l2-common.h
v4l2-controls.h
v4l2-dv-timings.h
v4l2-mediabus.h
v4l2-subdev.h
veth.h
vfio_ccw.h	vfio: ccw: introduce ccw_io_region	2017-03-31 12:55:06 +02:00
vfio.h	vfio: ccw: realize VFIO_DEVICE_G(S)ET_IRQ_INFO ioctls	2017-03-31 12:55:09 +02:00
vhost.h	vhost: remove unused feature bit	2016-12-16 00:13:38 +02:00
videodev2.h	[media] videodev.h: add V4L2_CTRL_FLAG_MODIFY_LAYOUT	2017-04-14 22:54:01 -03:00
virtio_9p.h
virtio_balloon.h
virtio_blk.h
virtio_config.h
virtio_console.h
virtio_crypto.h	crypto: add virtio-crypto driver	2016-12-16 00:13:32 +02:00
virtio_gpu.h
virtio_ids.h	crypto: add virtio-crypto driver	2016-12-16 00:13:32 +02:00
virtio_input.h
virtio_mmio.h	virtio_mmio: expose header to userspace	2017-02-27 16:31:23 +02:00
virtio_net.h
virtio_pci.h	Revert "virtio_pci: don't duplicate the msix_enable flag in struct pci_dev"	2017-04-11 00:28:41 +03:00
virtio_ring.h
virtio_rng.h
virtio_scsi.h
virtio_types.h	linux: drop __bitwise__ everywhere	2016-12-16 00:13:41 +02:00
virtio_vsock.h
vm_sockets.h
vsockmon.h	VSOCK: Add vsockmon device	2017-04-24 12:35:56 -04:00
vt.h
vtpm_proxy.h
wait.h
wanrouter.h
watchdog.h
wil6210_uapi.h
wimax.h
wireless.h
x25.h
xattr.h
xfrm.h	xfrm: Add an IPsec hardware offloading API	2017-04-14 10:06:10 +02:00
xilinx-v4l2-controls.h
zorro_ids.h
zorro.h