Matthieu Baerts (NGI0) 539f6b9de3 mptcp: pm: in-kernel: add laminar endpoints ... Currently, upon the reception of an ADD_ADDR (and when the fullmesh flag is not used), the in-kernel PM will create new subflows using the local address the routing configuration will pick. It would be easier to pick local addresses from a selected list of endpoints, and use it only once, than relying on routing rules. Use case: both the client (C) and the server (S) have two addresses (a and b). The client establishes the connection between C(a) and S(a). Once established, the server announces its additional address S(b). Once received, the client connects to it using its second address C(b). Compared to a situation without the 'laminar' endpoint for C(b), the client didn't use this address C(b) to establish a subflow to the server's primary address S(a). So at the end, we have: C S C(a) --- S(a) C(b) --- S(b) In case of a 3rd address on each side (C(c) and S(c)), upon the reception of an ADD_ADDR with S(c), the client should not pick C(b) because it has already been used. C(c) should then be used. Note that this situation is currently possible if C doesn't add any endpoint, but configure the routing in order to pick C(b) for the route to S(b), and pick C(c) for the route to S(c). That doesn't sound very practical because it means knowing in advance the IP addresses that will be used and announced by the server. 'laminar', like the idea of laminar flows: the different subflows don't mix with each other on an endpoint, unlike the "turbulent" way traffic is mixed by 'fullmesh'. In the code, the new endpoint type is added. Similar to the other subflow types, an MPTCP_INFO counter is added. While at it, hole are now commented in struct mptcp_info, to remember next time that these holes can no longer be used. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/503 Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-15-ad126cc47c6b@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2025-09-26 17:44:05 -07:00
..
android
byteorder
caif
can	can: netlink: document which symbols are FD specific	2025-09-24 17:09:44 +02:00
cifs
counter
dvb
genwqe
hdlc
hsi
iio
io_uring	io_uring/mock: add trivial poll handler	2025-07-02 08:10:26 -06:00
isdn
media	media: pisp_be: Use clamp() and define max sizes	2025-07-03 09:25:01 +02:00
misc
mmc
netfilter	netfilter: nft_meta_bridge: introduce NFT_META_BRI_IIFHWADDR support	2025-09-11 15:40:55 +02:00
netfilter_arp
netfilter_bridge
netfilter_ipv4
netfilter_ipv6
nfsd
raid	md: keep recovery_cp in mdp_superblock_s	2025-08-16 08:47:38 +08:00
sched
spi
sunrpc
surface_aggregator
tc_act
tc_ematch
usb
a.out.h
acct.h
acrn.h
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h
am437x-vpfe.h
amt.h
apm_bios.h
arcfb.h
arm_sdei.h
aspeed-lpc-ctrl.h
aspeed-p2a-ctrl.h
aspeed-video.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
auto_dev-ioctl.h
auto_fs.h
auto_fs4.h
auxvec.h
ax25.h
batadv_packet.h
batman_adv.h
baycom.h
bcm933xx_hcs.h
bfs_fs.h
binfmts.h
bits.h	uapi: bitops: use UAPI-safe variant of BITS_PER_LONG again (2)	2025-07-08 10:23:13 -04:00
blk-crypto.h
blkdev.h
blkpg.h
blktrace_api.h
blkzoned.h
bpf_common.h
bpf_perf_event.h
bpf.h	bpf: Add struct bpf_token_info	2025-07-16 18:38:05 -07:00
bpqether.h
bsg.h
bt-bmc.h
btf.h
btrfs_tree.h
btrfs.h	btrfs: defrag: add flag to force no-compression	2025-07-22 01:13:03 +02:00
cachefiles.h
can.h
capability.h	uapi: fix broken link in linux/capability.h	2025-07-04 19:21:53 -05:00
capi.h
cciss_defs.h
cciss_ioctl.h
ccs.h
cdrom.h
cec-funcs.h
cec.h
cfm_bridge.h
cgroupstats.h
chio.h
close_range.h
cn_proc.h
coda.h
coff.h
comedi.h
connector.h
const.h
coredump.h	coredump: allow for flexible coredump handling	2025-06-12 14:00:18 +02:00
coresight-stm.h
counter.h
cramfs_fs.h
cryptouser.h
cuda.h
cxl_mem.h
cyclades.h
cycx_cfm.h
dcbnl.h
dccp.h
devlink.h	devlink: Make health reporter burst period configurable	2025-08-26 17:24:16 -07:00
dlm_device.h
dlm_plock.h
dlm.h
dlmconstants.h
dm-ioctl.h
dm-log-userspace.h
dma-buf.h
dma-heap.h
dns_resolver.h
dpll.h	dpll: add reference-sync netlink attribute	2025-06-27 16:38:02 -07:00
dqblk_xfs.h
dw100.h
edd.h
efs_fs_sb.h
elf-em.h
elf-fdpic.h
elf.h
errno.h
errqueue.h
erspan.h
ethtool_netlink_generated.h	ethtool: add FEC bins histogram report	2025-09-26 16:49:18 -07:00
ethtool_netlink.h	netlink: specs: add the multicast group name to spec	2025-06-25 15:24:13 -07:00
ethtool.h	net: ethtool: support including Flow Label in the flow hash for RSS	2025-08-14 11:40:13 +02:00
eventfd.h
eventpoll.h
exfat.h
ext4.h
f2fs.h
fadvise.h
falloc.h	fs: introduce FALLOC_FL_WRITE_ZEROES to fallocate	2025-06-23 12:45:13 +02:00
fanotify.h
fb.h
fcntl.h	uapi/fcntl: add FD_PIDFS_ROOT	2025-06-24 16:58:42 +02:00
fd.h
fdreg.h
fib_rules.h
fiemap.h
filter.h
firewire-cdev.h
firewire-constants.h
fou.h
fpga-dfl.h
fs.h	vfs-6.17-rc1.fileattr	2025-07-28 15:24:14 -07:00
fscrypt.h
fsi.h
fsl_hypervisor.h
fsl_mc.h
fsmap.h
fsverity.h
fuse.h
futex.h
gameport.h
gen_stats.h
genetlink.h
gfs2_ondisk.h
gpio.h
gsmmux.h
gtp.h
handshake.h	net/handshake: Add new parameter 'HANDSHAKE_A_ACCEPT_KEYRING'	2025-07-08 15:31:44 +02:00
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
i2c-dev.h
i2c.h	i2c: Clarify behavior of I2C_M_RD flag	2025-07-14 09:15:58 +02:00
i2o-dev.h
i8k.h
icmp.h
icmpv6.h
idxd.h
if_addr.h
if_addrlabel.h
if_alg.h
if_arcnet.h
if_arp.h
if_bonding.h
if_bridge.h	net: bridge: Introduce UAPI for BR_BOOLOPT_FDB_LOCAL_VLAN_0	2025-09-11 19:02:50 -07:00
if_eql.h
if_ether.h
if_fc.h
if_fddi.h
if_hippi.h
if_infiniband.h
if_link.h	rtnetlink: add needed_{head,tail}room attributes	2025-09-19 17:21:55 -07:00
if_ltalk.h
if_macsec.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	tun: enable gso over UDP tunnel support.	2025-07-08 18:07:26 +02:00
if_tunnel.h
if_vlan.h
if_x25.h
if_xdp.h	net: xsk: introduce XDP_MAX_TX_SKB_BUDGET setsockopt	2025-07-10 14:48:29 +02:00
if.h
ife.h
igmp.h
ila.h
in_route.h
in.h
in6.h	uapi: in6: restore visibility of most IPv6 socket options	2025-06-10 14:41:14 -07:00
inet_diag.h
inotify.h
input-event-codes.h	Input: add keycode for performance mode key	2025-08-05 13:51:10 -07:00
input.h	HID: core: Add bus define for SoundWire bus	2025-06-20 11:52:06 +01:00
io_uring.h	io_uring/net: Allow to do vectorized send	2025-07-30 08:23:04 -06:00
ioam6_genl.h
ioam6_iptunnel.h
ioam6.h
ioctl.h
iommufd.h	iommufd: Destroy vdevice on idevice destroy	2025-07-18 17:33:08 -03:00
ioprio.h
ip_vs.h
ip.h
ip6_tunnel.h
ipc.h
ipmi_bmc.h
ipmi_msgdefs.h
ipmi_ssif_bmc.h
ipmi.h
ipsec.h
ipv6_route.h
ipv6.h	ipv6: add force_forwarding sysctl to enable per-interface forwarding	2025-07-25 13:06:19 -07:00
irqnr.h
iso_fs.h
isst_if.h
ivtv.h
ivtvfb.h
jffs2.h
joystick.h
kcm.h
kcmp.h
kcov.h
kd.h
kdev_t.h
kernel-page-flags.h
kernel.h
kernelcapi.h
kexec.h	kexec: enable CMA based contiguous allocation	2025-08-02 12:01:38 -07:00
keyboard.h
keyctl.h
kfd_ioctl.h
kfd_sysfs.h
kvm_para.h
kvm.h	KVM/arm64 changes for 6.17, round #1	2025-07-29 12:27:40 -04:00
l2tp.h
landlock.h
libc-compat.h
limits.h
lirc.h
llc.h
loadpin.h
lockd_netlink.h
loop.h
lp.h
lsm.h
lwtunnel.h
magic.h
major.h
map_to_7segment.h
map_to_14segment.h
matroxfb.h
max2175.h
mctp.h	net: mctp: add gateway routing support	2025-07-08 12:39:24 +02:00
mdio.h
media-bus-format.h
media.h
mei_uuid.h
mei.h
membarrier.h
memfd.h
mempolicy.h
mii.h
minix_fs.h
mman.h
mmtimer.h
module.h
mount.h
mpls_iptunnel.h
mpls.h
mptcp_pm.h	mptcp: pm: netlink: only add server-side attr when true	2025-09-22 11:51:24 -07:00
mptcp.h	mptcp: pm: in-kernel: add laminar endpoints	2025-09-26 17:44:05 -07:00
mqueue.h
mroute.h
mroute6.h
mrp_bridge.h
msdos_fs.h
msg.h
mshv.h
mtio.h
nbd-netlink.h
nbd.h
ncsi.h
ndctl.h
neighbour.h	neighbor: Add NTF_EXT_VALIDATED flag for externally validated entries	2025-06-30 18:14:23 -07:00
net_dropmon.h	uapi: net_dropmon: drop unused is_drop_point_hw macro	2025-06-25 15:35:20 -07:00
net_namespace.h
net_shaper.h
net_tstamp.h
net.h
netconf.h	ipv6: add force_forwarding sysctl to enable per-interface forwarding	2025-07-25 13:06:19 -07:00
netdev.h	net: define an enum for the napi threaded state	2025-07-24 18:34:55 -07:00
netdevice.h
netfilter_arp.h
netfilter_bridge.h
netfilter_ipv4.h
netfilter_ipv6.h
netfilter.h
netlink_diag.h
netlink.h
netrom.h
nexthop.h
nfc.h
nfs_fs.h
nfs_idmap.h
nfs_mount.h
nfs.h
nfs2.h
nfs3.h
nfs4_mount.h
nfs4.h
nfsacl.h
nfsd_netlink.h
nilfs2_api.h
nilfs2_ondisk.h
nitro_enclaves.h
nl80211-vnd-intel.h
nl80211.h	wifi: cfg80211: correctly implement and validate S1G chandef	2025-09-19 11:55:56 +02:00
npcm-video.h
nsfs.h	mntns: use stable inode number for initial mount ns	2025-06-11 11:59:08 +02:00
nsm.h
ntsync.h
nubus.h
nvme_ioctl.h
nvram.h
omap3isp.h
omapfb.h
oom.h
openat2.h
openvswitch.h	net: openvswitch: allow providing upcall pid for the 'execute' command	2025-07-07 14:30:39 -07:00
ovpn.h
packet_diag.h
papr_pdsm.h
param.h
parport.h
patchkey.h
pci_regs.h	PCI/IOV: Restore VF resizable BAR state after reset	2025-07-14 14:58:13 -05:00
pci.h
pcitest.h	misc: pci_endpoint_test: Add doorbell test case	2025-07-24 16:51:46 -05:00
perf_event.h
personality.h
pfkeyv2.h
pfrut.h	ACPI: pfr_update: Fix the driver update version check	2025-08-20 15:30:36 +02:00
pg.h
phantom.h
phonet.h
pidfd.h	uapi/fcntl: mark range as reserved	2025-06-24 15:50:06 +02:00
pkt_cls.h
pkt_sched.h	sched: Dump configuration and statistics of dualpi2 qdisc	2025-07-23 17:52:07 -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_gen.h
pps.h
pr.h
prctl.h	arm64 updates for 6.17:	2025-07-29 20:21:54 -07:00
psample.h
psci.h
psp-dbc.h
psp-sev.h
psp.h	net: psp: add socket security association code	2025-09-18 12:32:06 +02:00
ptp_clock.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2025-09-25 11:00:59 -07:00
ptrace.h
pwm.h	pwm: Add support for pwmchip devices for faster and easier userspace access	2025-07-07 08:39:33 +02:00
qemu_fw_cfg.h
qnx4_fs.h
qnxtypes.h
qrtr.h
quota.h
radeonfb.h
random.h
rds.h
reboot.h
remoteproc_cdev.h
resource.h
rfkill.h
rio_cm_cdev.h
rio_mport_cdev.h
rkisp1-config.h	media: rockchip: rkisp1: Add support for Wide Dynamic Range	2025-06-18 09:21:58 +02:00
romfs_fs.h
rose.h
route.h
rpl_iptunnel.h
rpl.h
rpmsg_types.h
rpmsg.h
rseq.h
rtc.h
rtnetlink.h
rxrpc.h
scc.h
sched.h
scif_ioctl.h
screen_info.h
sctp.h
seccomp.h
securebits.h
sed-opal.h
seg6_genl.h
seg6_hmac.h
seg6_iptunnel.h
seg6_local.h
seg6.h
selinux_netlink.h
sem.h
serial_core.h
serial_reg.h
serial.h
serio.h
sev-guest.h
shm.h
signal.h
signalfd.h
smc_diag.h
smc.h
smiapp.h
snmp.h	tcp: add LINUX_MIB_BEYOND_WINDOW	2025-07-14 18:41:42 -07:00
sock_diag.h
socket.h
sockios.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h
stddef.h	uapi: wrap compiler_types.h in an ifdef instead of the implicit strip	2025-08-28 13:06:48 +02:00
stm.h
string.h
suspend_ioctls.h
swab.h
switchtec_ioctl.h
sync_file.h
synclink.h
sysctl.h	ipv6: add force_forwarding sysctl to enable per-interface forwarding	2025-07-25 13:06:19 -07:00
sysinfo.h
target_core_user.h
taskstats.h
tcp_metrics.h
tcp.h	tcp: accecn: AccECN option failure handling	2025-09-18 08:47:52 +02:00
tdx-guest.h
tee.h
termios.h
thermal.h
thp7312.h
time_types.h
time.h	time: Introduce auxiliary POSIX clocks	2025-06-19 14:28:22 +02:00
timerfd.h
times.h
timex.h
tiocl.h
tipc_config.h
tipc_netlink.h
tipc_sockets_diag.h
tipc.h
tls.h
toshiba.h
tps6594_pfsm.h
trace_mmap.h
tty_flags.h
tty.h
types.h
ublk_cmd.h	ublk: allow UBLK_IO_(UN)REGISTER_IO_BUF on any task	2025-06-30 20:13:42 -06:00
udf_fs_i.h
udmabuf.h
udp.h
uhid.h
uinput.h
uio.h
uleds.h
ultrasound.h
um_timetravel.h
un.h
unistd.h
unix_diag.h
usbdevice_fs.h
usbip.h
user_events.h
userfaultfd.h
userio.h
utime.h
utsname.h
uuid.h
uvcvideo.h
v4l2-common.h
v4l2-controls.h	media: rkisp1: Add RKISP1_CID_SUPPORTED_PARAMS_BLOCKS control	2025-06-18 09:21:58 +02:00
v4l2-dv-timings.h
v4l2-mediabus.h
v4l2-subdev.h
vbox_err.h
vbox_vmmdev_types.h
vboxguest.h
vdpa.h
vduse.h	uapi: vduse: fix typo in comment	2025-09-21 17:44:20 -04:00
vesa.h
veth.h
vfio_ccw.h
vfio_zdev.h
vfio.h	vfio/pci: Do vf_token checks for VFIO_DEVICE_BIND_IOMMUFD	2025-08-05 15:41:14 -06:00
vhost_types.h	vhost-net: allow configuring extended features	2025-07-08 18:05:23 +02:00
vhost.h	vhost: Fix ioctl # for VHOST_[GS]ET_FORK_FROM_OWNER	2025-08-26 03:38:19 -04:00
videodev2.h	media: uvcvideo: Introduce V4L2_META_FMT_UVC_MSXU_1_5	2025-07-11 19:27:30 +02:00
virtio_9p.h
virtio_balloon.h
virtio_blk.h
virtio_bt.h
virtio_config.h
virtio_console.h
virtio_crypto.h
virtio_fs.h
virtio_gpio.h
virtio_gpu.h
virtio_i2c.h
virtio_ids.h
virtio_input.h
virtio_iommu.h
virtio_mem.h
virtio_mmio.h
virtio_net.h	net: implement virtio helpers to handle UDP GSO tunneling.	2025-07-08 18:05:47 +02:00
virtio_pci.h
virtio_pcidev.h
virtio_pmem.h
virtio_ring.h
virtio_rng.h
virtio_rtc.h	virtio_rtc: Add RTC class driver	2025-05-27 10:27:54 -04:00
virtio_scmi.h
virtio_scsi.h
virtio_snd.h
virtio_types.h
virtio_vsock.h
vm_sockets_diag.h
vm_sockets.h	vsock/uapi: fix linux/vm_sockets.h userspace compilation errors	2025-06-24 17:12:59 -07:00
vmclock-abi.h
vmcore.h
vsockmon.h
vt.h	Revert "tty: vt: use _IO() to define ioctl numbers"	2025-08-01 10:42:22 +02:00
vtpm_proxy.h
wait.h
watch_queue.h
watchdog.h
wireguard.h	wireguard: allowedips: add WGALLOWEDIP_F_REMOVE_ME flag	2025-05-27 09:06:19 +02:00
wireless.h
wmi.h
wwan.h
x25.h
xattr.h
xdp_diag.h
xfrm.h
xilinx-v4l2-controls.h
zorro_ids.h
zorro.h