Willem de Bruijn 829ae9d611 net-timestamp: allow reading recv cmsg on errqueue with origin tstamp ... Allow reading of timestamps and cmsg at the same time on all relevant socket families. One use is to correlate timestamps with egress device, by asking for cmsg IP_PKTINFO. on AF_INET sockets, call the relevant function (ip_cmsg_recv). To avoid changing legacy expectations, only do so if the caller sets a new timestamping flag SOF_TIMESTAMPING_OPT_CMSG. on AF_INET6 sockets, IPV6_PKTINFO and all other recv cmsg are already returned for all origins. only change is to set ifindex, which is not initialized for all error origins. In both cases, only generate the pktinfo message if an ifindex is known. This is not the case for ACK timestamps. The difference between the protocol families is probably a historical accident as a result of the different conditions for generating cmsg in the relevant ip(v6)_recv_error function: ipv4: if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP) { ipv6: if (serr->ee.ee_origin != SO_EE_ORIGIN_LOCAL) { At one time, this was the same test bar for the ICMP/ICMP6 distinction. This is no longer true. Signed-off-by: Willem de Bruijn <willemb@google.com> ---- Changes v1 -> v2 large rewrite - integrate with existing pktinfo cmsg generation code - on ipv4: only send with new flag, to maintain legacy behavior - on ipv6: send at most a single pktinfo cmsg - on ipv6: initialize fields if not yet initialized The recv cmsg interfaces are also relevant to the discussion of whether looping packet headers is problematic. For v6, cmsgs that identify many headers are already returned. This patch expands that to v4. If it sounds reasonable, I will follow with patches 1. request timestamps without payload with SOF_TIMESTAMPING_OPT_TSONLY (http://patchwork.ozlabs.org/patch/366967/) 2. sysctl to conditionally drop all timestamps that have payload or cmsg from users without CAP_NET_RAW. Signed-off-by: David S. Miller <davem@davemloft.net>		2014-12-08 20:20:48 -05:00
..
byteorder
caif
can
cifs
dvb
genwqe	GenWQE: Update author information	2014-09-23 23:15:46 -07:00
hdlc
hsi
isdn
mmc
netfilter	netfilter: ipset: Alignment problem between 64bit kernel 32bit userspace	2014-12-03 12:43:35 +01:00
netfilter_arp	uapi: netfilter_arp: use __u8 instead of u_int8_t	2014-08-20 15:13:08 +02:00
netfilter_bridge
netfilter_ipv4
netfilter_ipv6
nfsd	nfsd: allow turning off nfsv3 readdir_plus	2014-08-18 15:12:14 -04:00
raid	md: discard PRINT_RAID_DEBUG ioctl	2014-10-14 13:08:29 +11:00
spi
sunrpc
tc_act	sched: introduce vlan action	2014-11-21 14:20:18 -05:00
tc_ematch
usb	usb: gadget: f_fs: virtual endpoint address mapping	2014-09-16 09:58:21 -05:00
wimax
a.out.h
acct.h
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h
apm_bios.h
arcfb.h
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 git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
auto_fs4.h
auto_fs.h
auxvec.h
ax25.h
b1lli.h
baycom.h
bcache.h
bcm933xx_hcs.h
bfs_fs.h
binfmts.h
blkpg.h
blktrace_api.h
bpf_common.h	net: filter: move common defines into bpf_common.h	2014-10-14 16:06:45 -04:00
bpf.h	bpf: verifier: add checks for BPF_ABS | BPF_IND instructions	2014-12-05 21:47:32 -08:00
bpqether.h
bsg.h
btrfs.h
can.h
capability.h
capi.h
cciss_defs.h
cciss_ioctl.h
cdrom.h
cgroupstats.h
chio.h
cm4000_cs.h
cn_proc.h
coda_psdev.h
coda.h
coff.h
connector.h
const.h
cramfs_fs.h
cuda.h
cyclades.h
cycx_cfm.h
dcbnl.h
dccp.h
dlm_device.h
dlm_netlink.h
dlm_plock.h
dlm.h
dlmconstants.h
dm-ioctl.h	dm: allow active and inactive tables to share dm_devs	2014-10-05 20:03:35 -04:00
dm-log-userspace.h
dn.h
dqblk_xfs.h
edd.h
efs_fs_sb.h
elf-em.h	next: openrisc: Fix build	2014-09-26 14:53:23 -04:00
elf-fdpic.h
elf.h	s390: add support for vector extension	2014-10-09 09:14:13 +02:00
elfcore.h
errno.h
errqueue.h	net-timestamp: ACK timestamp for bytestreams	2014-08-05 16:35:54 -07:00
ethtool.h	ethtool, net/mlx4_en: Add 100M, 20G, 56G speeds ethtool reporting support	2014-10-28 17:18:00 -04:00
eventpoll.h
fadvise.h
falloc.h
fanotify.h
fb.h
fcntl.h	shm: add sealing API	2014-08-08 15:57:31 -07:00
fd.h
fdreg.h
fib_rules.h
fiemap.h
filter.h	net: filter: move common defines into bpf_common.h	2014-10-14 16:06:45 -04:00
firewire-cdev.h
firewire-constants.h
flat.h
fou.h	gue: Receive side for Generic UDP Encapsulation	2014-10-03 16:53:33 -07:00
fs.h	vfs: add RENAME_WHITEOUT	2014-10-24 00:14:37 +02:00
fsl_hypervisor.h
fuse.h
futex.h
gameport.h
gen_stats.h
genetlink.h
gfs2_ondisk.h
gigaset_dev.h
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	Drivers: hv: util: Properly pack the data for file copy functionality	2014-09-23 23:31:21 -07:00
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
if_bonding.h
if_bridge.h	bridge: add new hwmode swdev	2014-12-02 20:01:23 -08:00
if_cablemodem.h
if_eql.h
if_ether.h	net: dsa: reduce number of protocol hooks	2014-08-27 22:59:39 -07:00
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h
if_link.h	bridge: add new brport flag LEARNING_SYNC	2014-12-02 20:01:23 -08:00
if_ltalk.h
if_packet.h
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	gue: TX support for using remote checksum offload option	2014-11-05 16:30:03 -05:00
if_vlan.h
if_x25.h
if.h
igmp.h
in6.h	net: reallocate new socket option number for IPV6_AUTOFLOWLABEL	2014-08-06 15:25:01 -07:00
in_route.h
in.h
inet_diag.h	net: tcp: add DCTCP congestion control algorithm	2014-09-29 00:13:10 -04:00
inotify.h
input.h	HID: add keyboard input assist hid usages	2014-10-20 21:03:58 +02:00
ioctl.h
ip6_tunnel.h
ip_vs.h	ipvs: Add destination address family to netlink interface	2014-09-16 09:03:33 +09:00
ip.h
ipc.h
ipmi_msgdefs.h
ipmi.h
ipsec.h
ipv6_route.h
ipv6.h	net: ipv6: Add a sysctl to make optimistic addresses useful candidates	2014-10-29 15:11:36 -04:00
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	tipc: add tipc_netlink.h to uapi Kbuild	2014-11-24 16:21:10 -05:00
kd.h
kdev_t.h
kernel-page-flags.h	mm/balloon_compaction: add vmstat counters and kpageflags bit	2014-10-09 22:26:01 -04:00
kernel.h
kernelcapi.h
kexec.h	kexec: implementation of new syscall kexec_file_load	2014-08-08 15:57:32 -07:00
keyboard.h
keyctl.h
kvm_para.h
kvm.h	KVM: device: add simple registration mechanism for kvm_device_ops	2014-09-17 13:10:08 +02:00
l2tp.h
libc-compat.h
limits.h
llc.h
loop.h
lp.h
magic.h
major.h
map_to_7segment.h
matroxfb.h
mdio.h
media.h
mei.h
memfd.h	shm: add memfd_create() syscall	2014-08-08 15:57:31 -07:00
mempolicy.h
meye.h
mic_common.h
mic_ioctl.h
mii.h
minix_fs.h
mman.h
mmtimer.h
module.h
mpls.h
mqueue.h
mroute6.h
mroute.h
msdos_fs.h
msg.h
mtio.h
n_r3964.h
nbd.h
ncp_fs.h
ncp_mount.h
ncp_no.h
ncp.h
neighbour.h	bridge: add API to notify bridge driver of learned FBD on offloaded device	2014-12-02 20:01:22 -08:00
net_dropmon.h
net_tstamp.h	net-timestamp: allow reading recv cmsg on errqueue with origin tstamp	2014-12-08 20:20:48 -05:00
net.h
netconf.h
netdevice.h
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netfilter.h
netlink_diag.h
netlink.h
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
nl80211.h	nl80211: Replace interface socket owner attribute with more generic one	2014-11-19 18:54:40 +01:00
nubus.h
nvme.h
nvram.h
omap3isp.h
omapfb.h
oom.h
openvswitch.h	openvswitch: Add support for OVS_FLOW_ATTR_PROBE.	2014-11-09 18:58:44 -08:00
packet_diag.h
param.h
parport.h
patchkey.h
pci_regs.h	Merge branches 'pci/aer' and 'pci/virtualization' into next	2014-10-01 12:30:58 -06:00
pci.h
perf_event.h	perf: Fix typos in sample code in the perf_event.h header	2014-10-28 10:51:02 +01:00
personality.h
pfkeyv2.h
pg.h
phantom.h
phonet.h
pkt_cls.h
pkt_sched.h
pktcdvd.h
pmu.h
poll.h
posix_types.h
ppdev.h
ppp_defs.h
ppp-comp.h
ppp-ioctl.h
pps.h
prctl.h	prctl: PR_SET_MM -- introduce PR_SET_MM_MAP operation	2014-10-09 22:25:55 -04:00
psci.h
ptp_clock.h
ptrace.h
qnx4_fs.h
qnxtypes.h
quota.h
radeonfb.h
random.h	random: introduce getrandom(2) system call	2014-08-05 16:41:22 -04:00
raw.h
rds.h
reboot.h
reiserfs_fs.h
reiserfs_xattr.h
resource.h
rfkill.h
romfs_fs.h
rose.h
route.h
rtc.h
rtnetlink.h	rtnetlink: add babel protocol recognition	2014-11-10 12:05:59 -05:00
scc.h
sched.h	sched: Update comments for CLONE_NEWNS	2014-10-28 10:46:08 +01:00
screen_info.h
sctp.h
sdla.h
seccomp.h
securebits.h
selinux_netlink.h
sem.h
serial_core.h	ARM: meson: serial: add MesonX SoC on-chip uart driver	2014-09-08 16:12:40 -07:00
serial_reg.h
serial.h
serio.h
shm.h
signal.h
signalfd.h
smiapp.h	[media] smiapp: Add driver-specific test pattern menu item definitions	2014-08-21 15:25:11 -05:00
snmp.h	udp: Increment UDP_MIB_IGNOREDMULTI for arriving unmatched multicasts	2014-11-07 15:45:50 -05:00
sock_diag.h
socket.h
sockios.h
som.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h
stddef.h
string.h
suspend_ioctls.h
swab.h
synclink.h
sysctl.h
sysinfo.h
target_core_user.h	target: Add a user-passthrough backstore	2014-10-03 11:15:20 -07:00
taskstats.h
tcp_metrics.h
tcp.h
telephony.h
termios.h
time.h
times.h
timex.h
tiocl.h
tipc_config.h
tipc_netlink.h	tipc: add name table dump to new netlink api	2014-11-21 15:01:32 -05:00
tipc.h
toshiba.h
tty_flags.h
tty.h
types.h
udf_fs_i.h
udp.h
uhid.h	HID: uhid: report to user-space whether reports are numbered	2014-08-25 03:28:08 -05:00
uinput.h
uio.h
ultrasound.h
un.h
unistd.h
unix_diag.h
usbdevice_fs.h
usbip.h	usbip: move usbip kernel code out of staging	2014-08-25 10:40:06 -07:00
utime.h
utsname.h
uuid.h
uvcvideo.h
v4l2-common.h
v4l2-controls.h	[media] v4l: Add camera pan/tilt speed controls	2014-09-21 20:23:39 -03:00
v4l2-dv-timings.h	Revert "[media] v4l2-dv-timings: fix a sparse warning"	2014-10-24 08:58:09 -02:00
v4l2-mediabus.h
v4l2-subdev.h
veth.h
vfio.h	vfio/iommu_type1: add new VFIO_TYPE1_NESTING_IOMMU IOMMU type	2014-09-29 10:06:19 -06:00
vhost.h
videodev2.h	[media] v4l: Add ARGB555X and XRGB555X pixel formats	2014-09-21 20:28:32 -03:00
virtio_9p.h
virtio_balloon.h
virtio_blk.h
virtio_config.h
virtio_console.h
virtio_ids.h
virtio_net.h
virtio_pci.h
virtio_ring.h
virtio_rng.h
vm_sockets.h
vsp1.h
vt.h
wait.h
wanrouter.h
watchdog.h
wil6210_uapi.h	wil6210: atomic I/O for the card memory	2014-10-02 14:23:14 -04:00
wimax.h
wireless.h
x25.h
xattr.h	xattr: fix check for simultaneous glibc header inclusion	2014-08-29 16:28:16 -07:00
xfrm.h	xfrm: configure policy hash table thresholds by netlink	2014-09-02 13:37:56 +02:00
zorro_ids.h
zorro.h