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This path replaces physically contiguous memory arrays
allocated using kmalloc_array() with flexible arrays.
This enables to avoid memory allocation failures on the
systems under a memory stress.
Signed-off-by: Oleg Babin <[email protected]>
Signed-off-by: Konstantin Khorenko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This patch introduces wrappers for accessing in/out streams indirectly.
This will enable to replace physically contiguous memory arrays
of streams with flexible arrays (or maybe any other appropriate
mechanism) which do memory allocation on a per-page basis.
Signed-off-by: Oleg Babin <[email protected]>
Signed-off-by: Konstantin Khorenko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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pppol2tp_ioctl() has everything in place for handling PPPIOCGL2TPSTATS
on session sockets. We just need to copy the stats and set ->session_id.
As a side effect of sharing session and tunnel code, ->using_ipsec is
properly set even when the request was made using a session socket.
Signed-off-by: Guillaume Nault <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Make vp_set_vq_affinity() take a cpumask instead of taking a single CPU.
If there are fewer queues than cores, queue affinity should be able to
map to multiple cores.
Link: https://patchwork.ozlabs.org/patch/948149/
Suggested-by: Willem de Bruijn <[email protected]>
Signed-off-by: Caleb Raitto <[email protected]>
Acked-by: Gonglei <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add a new flag to indicate a one-time immediate ACK. This flag is
occasionaly set under specific TCP protocol states in addition to
the more common quickack mechanism for interactive application.
In several cases in the TCP code we want to force an immediate ACK
but do not want to call tcp_enter_quickack_mode() because we do
not want to forget the icsk_ack.pingpong or icsk_ack.ato state.
Signed-off-by: Yuchung Cheng <[email protected]>
Signed-off-by: Neal Cardwell <[email protected]>
Signed-off-by: Wei Wang <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:
====================
pull request: bluetooth-next 2018-08-10
Here's one more (most likely last) bluetooth-next pull request for the
4.19 kernel.
- Added support for MediaTek serial Bluetooth devices
- Initial skeleton for controller-side address resolution support
- Fix BT_HCIUART_RTL related Kconfig dependencies
- A few other minor fixes/cleanups
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <[email protected]>
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Pablo Neira Ayuso says:
====================
Netfilter updates for net-next
The following batch contains netfilter updates for your net-next tree:
1) Expose NFT_OSF_MAXGENRELEN maximum OS name length from the new OS
passive fingerprint matching extension, from Fernando Fernandez.
2) Add extension to support for fine grain conntrack timeout policies
from nf_tables. As preparation works, this patchset moves
nf_ct_untimeout() to nf_conntrack_timeout and it also decouples the
timeout policy from the ctnl_timeout object, most work done by
Harsha Sharma.
3) Enable connection tracking when conntrack helper is in place.
4) Missing enumeration in uapi header when splitting original xt_osf
to nfnetlink_osf, also from Fernando.
5) Fix a sparse warning due to incorrect typing in the nf_osf_find(),
from Wei Yongjun.
====================
Signed-off-by: David S. Miller <[email protected]>
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Building virtio_net driver without CONFIG_XPS fails with:
drivers/net/virtio_net.c: In function ‘virtnet_set_affinity’:
drivers/net/virtio_net.c:1910:3: error: implicit declaration of function ‘__netif_set_xps_queue’ [-Werror=implicit-function-declaration]
__netif_set_xps_queue(vi->dev, mask, i, false);
^
Fixes: 4d99f6602cb5 ("net: allow to call netif_reset_xps_queues() under cpus_read_lock")
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add the definitions for LE address resolution enable HCI commands.
When the LE address resolution enable gets changed via HCI commands
make sure that flag gets updated.
Signed-off-by: Ankit Navik <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
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Fixes the following sparse warning:
./include/linux/skbuff.h:2365:58: warning: Using plain integer as NULL pointer
Signed-off-by: YueHaibing <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This patch adds support for tc mqprio offload,
using this different traffic classes on the adapter
can be utilized based on configured priority to tc map.
For example -
tc qdisc add dev eth0 root mqprio num_tc 4 map 0 1 2 3
This will cause SKBs with priority 0,1,2,3 to transmit
over tc 0,1,2,3 hardware queues respectively.
Signed-off-by: Manish Chopra <[email protected]>
Signed-off-by: Ariel Elior <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Overlapping changes in RXRPC, changing to ktime_get_seconds() whilst
adding some tracepoints.
Signed-off-by: David S. Miller <[email protected]>
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Add a new entry to HWIF table for XGMAC 2.10. For now we fill it with
empty callbacks which will be added in posterior patches.
Signed-off-by: Jose Abreu <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Joao Pinto <[email protected]>
Cc: Giuseppe Cavallaro <[email protected]>
Cc: Alexandre Torgue <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add a helper for MAC drivers to use in their validate callback to deal
with 2500BaseX vs 1000BaseX modes, where the hardware supports both
but it is not possible to automatically select between them.
This helper defaults to 1000BaseX, as that is the 802.3 standard, and
will allow users to select 2500BaseX either by forcing the speed if
AN is disabled, or by changing the advertising mask if AN is enabled.
Disabling AN is not recommended as it is only the speed that we're
interested in controlling, not the duplex or pause mode parameters.
Signed-off-by: Russell King <[email protected]>
Signed-off-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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mlx5_query_vport_admin_state() is not used anywhere. Remove it.
Signed-off-by: Eli Cohen <[email protected]>
Reviewed-by: Or Gerlitz <[email protected]>
Signed-off-by: Saeed Mahameed <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Modify and query vport state commands share the same admin_state and
op_mod values, rename the enums to fit them both.
In addition, remove the esw prefix from the admin state enum as this
also applied for vnic.
Signed-off-by: Eran Ben Elisha <[email protected]>
Signed-off-by: Saeed Mahameed <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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New firmware has defined new HCA capability field called "max_num_eqs",
that is the number of available EQs after subtracting reserved FW EQs.
Before this capability the FW reported the EQ number in "log_max_eqs",
the reported value also contained FW reserved EQs, but the driver might
be failing to load on 320 cpus systems due to the fact that FW
reserved EQs were not available to the driver.
Now the driver has to obtain max_num_eqs value from new FW to get real
number of EQs available.
Signed-off-by: Denis Drozdov <[email protected]>
Reviewed-by: Alex Vesker <[email protected]>
Signed-off-by: Saeed Mahameed <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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xt_osf_window_size_options was originally part of
include/uapi/linux/netfilter/xt_osf.h, restore it.
Fixes: bfb15f2a95cb ("netfilter: extract Passive OS fingerprint infrastructure from xt_osf")
Signed-off-by: Fernando Fernandez Mancera <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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llc_sap_put() decreases the refcnt before deleting sap
from the global list. Therefore, there is a chance
llc_sap_find() could find a sap with zero refcnt
in this global list.
Close this race condition by checking if refcnt is zero
or not in llc_sap_find(), if it is zero then it is being
removed so we can just treat it as gone.
Reported-by: <[email protected]>
Signed-off-by: Cong Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add support for the Broadcom Omega SoC internal Combo Ethernet
GPHY to the bcm7xxx phy driver.
Signed-off-by: Arun Parameswaran <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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syzbot reported that we reinitialize an active delayed
work in vsock_stream_connect():
ODEBUG: init active (active state 0) object type: timer_list hint:
delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:1414
WARNING: CPU: 1 PID: 11518 at lib/debugobjects.c:329
debug_print_object+0x16a/0x210 lib/debugobjects.c:326
The pattern is apparently wrong, we should only initialize
the dealyed work once and could repeatly schedule it. So we
have to move out the initializations to allocation side.
And to avoid confusion, we can split the shared dwork
into two, instead of re-using the same one.
Fixes: d021c344051a ("VSOCK: Introduce VM Sockets")
Reported-by: <[email protected]>
Cc: Andy king <[email protected]>
Cc: Stefan Hajnoczi <[email protected]>
Cc: Jorgen Hansen <[email protected]>
Signed-off-by: Cong Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Allow matching on options in Geneve tunnel headers.
This makes use of existing tunnel metadata support.
The options can be described in the form
CLASS:TYPE:DATA/CLASS_MASK:TYPE_MASK:DATA_MASK, where CLASS is
represented as a 16bit hexadecimal value, TYPE as an 8bit
hexadecimal value and DATA as a variable length hexadecimal value.
e.g.
# ip link add name geneve0 type geneve dstport 0 external
# tc qdisc add dev geneve0 ingress
# tc filter add dev geneve0 protocol ip parent ffff: \
flower \
enc_src_ip 10.0.99.192 \
enc_dst_ip 10.0.99.193 \
enc_key_id 11 \
geneve_opts 0102:80:1122334421314151/ffff:ff:ffffffffffffffff \
ip_proto udp \
action mirred egress redirect dev eth1
This patch adds support for matching Geneve options in the order
supplied by the user. This leads to an efficient implementation in
the software datapath (and in our opinion hardware datapaths that
offload this feature). It is also compatible with Geneve options
matching provided by the Open vSwitch kernel datapath which is
relevant here as the Flower classifier may be used as a mechanism
to program flows into hardware as a form of Open vSwitch datapath
offload (sometimes referred to as OVS-TC). The netlink
Kernel/Userspace API may be extended, for example by adding a flag,
if other matching options are desired, for example matching given
options in any order. This would require an implementation in the
TC software datapath. And be done in a way that drivers that
facilitate offload of the Flower classifier can reject or accept
such flows based on hardware datapath capabilities.
This approach was discussed and agreed on at Netconf 2017 in Seoul.
Signed-off-by: Simon Horman <[email protected]>
Signed-off-by: Pieter Jansen van Vuuren <[email protected]>
Acked-by: Jakub Kicinski <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Allow the existing 'dissection' of tunnel metadata to 'dissect'
options already present in tunnel metadata. This dissection is
controlled by a new dissector key, FLOW_DISSECTOR_KEY_ENC_OPTS.
This dissection only occurs when skb_flow_dissect_tunnel_info()
is called, currently only the Flower classifier makes that call.
So there should be no impact on other users of the flow dissector.
This is in preparation for allowing the flower classifier to
match on Geneve options.
Signed-off-by: Simon Horman <[email protected]>
Signed-off-by: Pieter Jansen van Vuuren <[email protected]>
Reviewed-by: Jakub Kicinski <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add the ability to specify through ethtool::rxnfc that a rule location is
special and will be used to participate in Wake-on-LAN, by e.g: having a
specific pattern be matched. When this is the case, fs->ring_cookie must
be set to the special value RX_CLS_FLOW_WAKE.
We also define an additional ethtool::wolinfo flag: WAKE_FILTER which
can be used to configure an Ethernet adapter to allow Wake-on-LAN using
previously programmed filters.
Signed-off-by: Florian Fainelli <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Daniel Borkmann says:
====================
pull-request: bpf-next 2018-08-07
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Add cgroup local storage for BPF programs, which provides a fast
accessible memory for storing various per-cgroup data like number
of transmitted packets, etc, from Roman.
2) Support bpf_get_socket_cookie() BPF helper in several more program
types that have a full socket available, from Andrey.
3) Significantly improve the performance of perf events which are
reported from BPF offload. Also convert a couple of BPF AF_XDP
samples overto use libbpf, both from Jakub.
4) seg6local LWT provides the End.DT6 action, which allows to
decapsulate an outer IPv6 header containing a Segment Routing Header.
Adds this action now to the seg6local BPF interface, from Mathieu.
5) Do not mark dst register as unbounded in MOV64 instruction when
both src and dst register are the same, from Arthur.
6) Define u_smp_rmb() and u_smp_wmb() to their respective barrier
instructions on arm64 for the AF_XDP sample code, from Brian.
7) Convert the tcp_client.py and tcp_server.py BPF selftest scripts
over from Python 2 to Python 3, from Jeremy.
8) Enable BTF build flags to the BPF sample code Makefile, from Taeung.
9) Remove an unnecessary rcu_read_lock() in run_lwt_bpf(), from Taehee.
10) Several improvements to the README.rst from the BPF documentation
to make it more consistent with RST format, from Tobin.
11) Replace all occurrences of strerror() by calls to strerror_r()
in libbpf and fix a FORTIFY_SOURCE build error along with it,
from Thomas.
12) Fix a bug in bpftool's get_btf() function to correctly propagate
an error via PTR_ERR(), from Yue.
====================
Signed-off-by: David S. Miller <[email protected]>
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This patch allows to add, list and delete connection tracking timeout
policies via nft objref infrastructure and assigning these timeout
via nft rule.
%./libnftnl/examples/nft-ct-timeout-add ip raw cttime tcp
Ruleset:
table ip raw {
ct timeout cttime {
protocol tcp;
policy = {established: 111, close: 13 }
}
chain output {
type filter hook output priority -300; policy accept;
ct timeout set "cttime"
}
}
%./libnftnl/examples/nft-rule-ct-timeout-add ip raw output cttime
%conntrack -E
[NEW] tcp 6 111 ESTABLISHED src=172.16.19.128 dst=172.16.19.1
sport=22 dport=41360 [UNREPLIED] src=172.16.19.1 dst=172.16.19.128
sport=41360 dport=22
%nft delete rule ip raw output handle <handle>
%./libnftnl/examples/nft-ct-timeout-del ip raw cttime
Joint work with Pablo Neira.
Signed-off-by: Harsha Sharma <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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Simplify this, include it inconditionally in this structure layout as we
do with ctnetlink.
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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The timeout policy is currently embedded into the nfnetlink_cttimeout
object, move the policy into an independent object. This allows us to
reuse part of the existing conntrack timeout extension from nf_tables
without adding dependencies with the nfnetlink_cttimeout object layout.
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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As, ctnl_untimeout is required by nft_ct, so move ctnl_timeout from
nfnetlink_cttimeout to nf_conntrack_timeout and rename as nf_ct_timeout.
Signed-off-by: Harsha Sharma <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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As no "genre" on pf.os exceed 16 bytes of length, we reduce
NFT_OSF_MAXGENRELEN parameter to 16 bytes and use it instead of IFNAMSIZ.
Signed-off-by: Fernando Fernandez Mancera <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next
Stefan Schmidt says:
====================
pull-request: ieee802154-next 2018-08-06
An update from ieee802154 for *net-next*
Romuald added a socket option to get the LQI value of the received datagram.
Alexander added a new hardware simulation driver modelled after hwsim of the
wireless people. It allows runtime configuration for new nodes and edges over a
netlink interface (a config utlity is making its way into wpan-tools).
We also have three fixes in here. One from Colin which is more of a cleanup and
two from Alex fixing tailroom and single frame space problems.
I would normally put the last two into my fixes tree, but given we are already
in -rc8 I simply put them here and added a cc: stable to them.
====================
Signed-off-by: David S. Miller <[email protected]>
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Using HCI_VENDOR_PKT for vendor specific events does work since it has
also the value 0xff, but it is actually the packet type indicator
constant and not the event constant. So introduce HCI_EV_VENDOR and
use it.
Signed-off-by: Marcel Holtmann <[email protected]>
Signed-off-by: Johan Hedberg <[email protected]>
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We use to have message like:
struct vhost_msg {
int type;
union {
struct vhost_iotlb_msg iotlb;
__u8 padding[64];
};
};
Unfortunately, there will be a hole of 32bit in 64bit machine because
of the alignment. This leads a different formats between 32bit API and
64bit API. What's more it will break 32bit program running on 64bit
machine.
So fixing this by introducing a new message type with an explicit
32bit reserved field after type like:
struct vhost_msg_v2 {
__u32 type;
__u32 reserved;
union {
struct vhost_iotlb_msg iotlb;
__u8 padding[64];
};
};
We will have a consistent ABI after switching to use this. To enable
this capability, introduce a new ioctl (VHOST_SET_BAKCEND_FEATURE) for
userspace to enable this feature (VHOST_BACKEND_F_IOTLB_V2).
Fixes: 6b1e6cc7855b ("vhost: new device IOTLB API")
Signed-off-by: Jason Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:
====================
pull request: bluetooth-next 2018-08-05
Here's the main bluetooth-next pull request for the 4.19 kernel.
- Added support for Bluetooth Advertising Extensions
- Added vendor driver support to hci_h5 HCI driver
- Added serdev support to hci_h5 driver
- Added support for Qualcomm wcn3990 controller
- Added support for RTL8723BS and RTL8723DS controllers
- btusb: Added new ID for Realtek 8723DE
- Several other smaller fixes & cleanups
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <[email protected]>
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Similar to TCP OOO RX queue, it makes sense to use rb trees to store
IP fragments, so that OOO fragments are inserted faster.
Tested:
- a follow-up patch contains a rather comprehensive ip defrag
self-test (functional)
- ran neper `udp_stream -c -H <host> -F 100 -l 300 -T 20`:
netstat --statistics
Ip:
282078937 total packets received
0 forwarded
0 incoming packets discarded
946760 incoming packets delivered
18743456 requests sent out
101 fragments dropped after timeout
282077129 reassemblies required
944952 packets reassembled ok
262734239 packet reassembles failed
(The numbers/stats above are somewhat better re:
reassemblies vs a kernel without this patchset. More
comprehensive performance testing TBD).
Reported-by: Jann Horn <[email protected]>
Reported-by: Juha-Matti Tilli <[email protected]>
Suggested-by: Eric Dumazet <[email protected]>
Signed-off-by: Peter Oskolkov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Florian Westphal <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Tested: see the next patch is the series.
Suggested-by: Eric Dumazet <[email protected]>
Signed-off-by: Peter Oskolkov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Florian Westphal <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This behavior is required in IPv6, and there is little need
to tolerate overlapping fragments in IPv4. This change
simplifies the code and eliminates potential DDoS attack vectors.
Tested: ran ip_defrag selftest (not yet available uptream).
Suggested-by: David S. Miller <[email protected]>
Signed-off-by: Peter Oskolkov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Florian Westphal <[email protected]>
Acked-by: Stephen Hemminger <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This patch is to support automatic configuration for ptp timer.
If required ptp dts properties are not provided, driver could
try to calculate a set of default configurations to initialize
the ptp timer. This makes the driver work for many boards which
don't have the required ptp dts properties in current kernel.
Also the users could set dts properties by themselves according
to their requirement.
Signed-off-by: Yangbo Lu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Pablo Neira Ayuso says:
====================
Netfilter updates for net-next
The following patchset contains Netfilter updates for your net-next tree:
1) Support for transparent proxying for nf_tables, from Mate Eckl.
2) Patchset to add OS passive fingerprint recognition for nf_tables,
from Fernando Fernandez. This takes common code from xt_osf and
place it into the new nfnetlink_osf module for codebase sharing.
3) Lightweight tunneling support for nf_tables.
4) meta and lookup are likely going to be used in rulesets, make them
direct calls. From Florian Westphal.
A bunch of incremental updates:
5) use PTR_ERR_OR_ZERO() from nft_numgen, from YueHaibing.
6) Use kvmalloc_array() to allocate hashtables, from Li RongQing.
7) Explicit dependencies between nfnetlink_cttimeout and conntrack
timeout extensions, from Harsha Sharma.
8) Simplify NLM_F_CREATE handling in nf_tables.
9) Removed unused variable in the get element command, from
YueHaibing.
10) Expose bridge hook priorities through uapi, from Mate Eckl.
And a few fixes for previous Netfilter batch for net-next:
11) Use per-netns mutex from flowtable event, from Florian Westphal.
12) Remove explicit dependency on iptables CT target from conntrack
zones, from Florian.
13) Fix use-after-free in rmmod nf_conntrack path, also from Florian.
====================
Signed-off-by: David S. Miller <[email protected]>
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Lots of overlapping changes, mostly trivial in nature.
The mlxsw conflict was resolving using the example
resolution at:
https://github.com/jpirko/linux_mlxsw/blob/combined_queue/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
Signed-off-by: David S. Miller <[email protected]>
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Android's header sanitization tool chokes on static inline functions having a
trailing semicolon, leading to an incorrectly parsed header file. While the
tool should obviously be fixed, also fix the header files for the two affected
functions: ethtool_get_flow_spec_ring() and ethtool_get_flow_spec_ring_vf().
Fixes: 8cf6f497de40 ("ethtool: Add helper routines to pass vf to rx_flow_spec")
Reporetd-by: Blair Prescott <[email protected]>
Signed-off-by: Florian Fainelli <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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We prefer to ARRAY_SIZE rather than the open code to calculate size.
Signed-off-by: zhong jiang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Push iov_iter up from rxrpc_kernel_recv_data() to its caller to allow
non-contiguous iovs to be passed down, thereby permitting file reading to
be simplified in the AFS filesystem in a future patch.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Netfilter exposes standard hook priorities in case of ipv4, ipv6 and
arp but not in case of bridge.
This patch exposes the hook priority values of the bridge family (which are
different from the formerly mentioned) via uapi so that they can be used by
user-space applications just like the others.
Signed-off-by: Máté Eckl <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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This patch allows us to match on the tunnel metadata that is available
of the packet. We can use this to validate if the packet comes from/goes
to tunnel and the corresponding tunnel ID.
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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This patch implements the tunnel object type that can be used to
configure tunnels via metadata template through the existing lightweight
API from the ingress path.
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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This attribute's handling is broken. It can only be used when creating
Ethernet pseudo-wires, in which case its value can be used as the
initial MTU for the l2tpeth device.
However, when handling update requests, L2TP_ATTR_MTU only modifies
session->mtu. This value is never propagated to the l2tpeth device.
Dump requests also return the value of session->mtu, which is not
synchronised anymore with the device MTU.
The same problem occurs if the device MTU is properly updated using the
generic IFLA_MTU attribute. In this case, session->mtu is not updated,
and L2TP_ATTR_MTU will report an invalid value again when dumping the
session.
It does not seem worthwhile to complexify l2tp_eth.c to synchronise
session->mtu with the device MTU. Even the ip-l2tp manpage advises to
use 'ip link' to initialise the MTU of l2tpeth devices (iproute2 does
not handle L2TP_ATTR_MTU at all anyway). So let's just ignore it
entirely.
Signed-off-by: Guillaume Nault <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The first client of the nf_osf.h userspace header is nft_osf, coming in
this batch, rename it to nfnetlink_osf.h as there are no userspace
clients for this yet, hence this looks consistent with other nfnetlink
subsystem.
Suggested-by: Jan Engelhardt <[email protected]>
Signed-off-by: Fernando Fernandez Mancera <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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All warnings (new ones prefixed by >>):
>> ./usr/include/linux/netfilter/nf_osf.h:73: userspace cannot reference function or variable defined in the kernel
Fixes: f9324952088f ("netfilter: nfnetlink_osf: extract nfnetlink_subsystem code from xt_osf.c")
Reported-by: kbuild test robot <[email protected]>
Signed-off-by: Fernando Fernandez Mancera <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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