David S. Miller [Wed, 19 Aug 2015 03:16:53 +0000 (20:16 -0700)]
Merge branch 'vrf-next'
Nikolay Aleksandrov says:
====================
vrf: a few simplifications and cleanups
These patches remove some unnecessary checks (patches 3, 4), unnecessary
num_slaves member and refcnt manipulations which are already done by the
upper functions.
====================
Acked-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
vrf: don't check for dstats and rth in uninit path
dstats and rth are always present because we fail the device registration
if they can't be allocated in vrf_init() (ndo_init) so drop the unnecessary
checks.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Benc [Tue, 18 Aug 2015 16:42:09 +0000 (18:42 +0200)]
lwtunnel: ip tunnel: fix multiple routes with different encap
Currently, two routes going through the same tunnel interface are considered
the same even when they are routed to a different host after encapsulation.
This causes all routes added after the first one to have incorrect
encapsulation parameters.
This is nicely visible by doing:
# ip r a 192.168.1.2/32 dev vxlan0 tunnel dst 10.0.0.2
# ip r a 192.168.1.3/32 dev vxlan0 tunnel dst 10.0.0.3
# ip r
[...]
192.168.1.2/32 tunnel id 0 src 0.0.0.0 dst 10.0.0.2 [...]
192.168.1.3/32 tunnel id 0 src 0.0.0.0 dst 10.0.0.2 [...]
Implement the missing comparison function.
Fixes: 3093fbe7ff4bc ("route: Per route IP tunnel metadata via lightweight tunnel") Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Benc [Tue, 18 Aug 2015 16:41:13 +0000 (18:41 +0200)]
lwtunnel: fix memory leak
The built lwtunnel_state struct has to be freed after comparison.
Fixes: 571e722676fe3 ("ipv4: support for fib route lwtunnel encap attributes") Signed-off-by: Jiri Benc <jbenc@redhat.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Tue, 18 Aug 2015 09:31:44 +0000 (12:31 +0300)]
cxgb4: memory corruption in debugfs
You can't use kstrtoul() with an int or it causes memory corruption.
Also j should be unsigned or we have underflow bugs.
I considered changing "j" to unsigned long but everything fits in a u32.
Fixes: 8e3d04fd7d70 ('cxgb4: Add MPS tracing support') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/built-in.o: In function `.vnic_wq_devcmd2_alloc':
(.text+0x49fe40): multiple definition of `.vnic_wq_devcmd2_alloc'
drivers/scsi/built-in.o:(.text+0xb4318): first defined here
drivers/net/built-in.o:(.opd+0x2af00): multiple definition of `vnic_wq_devcmd2_alloc'
drivers/scsi/built-in.o:(.opd+0xad70): first defined here
drivers/net/built-in.o: In function `.vnic_wq_init_start':
(.text+0x49f9c0): multiple definition of `.vnic_wq_init_start'
drivers/scsi/built-in.o:(.text+0xb3b58): first defined here
drivers/net/built-in.o:(.opd+0x2ae88): multiple definition of `vnic_wq_init_start'
drivers/scsi/built-in.o:(.opd+0xace0): first defined here
Rename these to 'enic_*' to avoid the conflict with the functiosn of
the same name in the snic scsi driver.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Rajesh Borundia [Tue, 18 Aug 2015 07:22:59 +0000 (10:22 +0300)]
bnx2x: Add vxlan RSS support
Latest FW submission added some vxlan offload capabilities to our device.
This patch adds the ability to connect to the vxlan NDOs and configure
the UDP port associated with it in the HW.
The device would now be capable of performing RSS according to the
inner headers of the vxlan packets.
Signed-off-by: Rajesh Borundia <Rajesh.Borundia@qlogic.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 18 Aug 2015 21:17:22 +0000 (14:17 -0700)]
Merge branch 'dsa-multi-swtich'
Andrew Lunn says:
====================
D in DSA patches
The D in DSA is distributed, meaning multiple switches can be
connected together. Currently no mainline system does this, and so the
code is broken. This patchset contains two fixes, and a small helper.
With three of more switches, the current device tree binding is not
sufficient to express the routing between the switches. The first
patch extends the binding, in a backwards compatible way, to allow a
link between a switch to describe all the switches accessible over the
link, not just the direct neighbor.
The third patch fixes the port configuration on newer devices for
links connecting switches.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Mon, 17 Aug 2015 21:52:52 +0000 (23:52 +0200)]
dsa: mv88e6xxx: Set DSA mode based on chip abilities
Older devices only support a single DSA frame format, where as newer
devices have two. Take this into account when configuring a DSA port.
The port needs to be in plain old DSA mode, since this is a DSA link,
where as the newer format can be used for the CPU port.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Mon, 17 Aug 2015 21:52:50 +0000 (23:52 +0200)]
net: dsa: Allow multi hop routes to be expressed
With more than two switches in a hierarchy, it becomes necessary to
describe multi-hop routes between switches. The current binding does
not allow this, although the older platform_data did. Extend the link
property to be a list rather than a single phandle to a remote switch.
It is then possible to express that a port should be used to reach
more than one switch and the switch maybe more than one hop away.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 18 Aug 2015 18:55:08 +0000 (11:55 -0700)]
Merge branch 'drivers_iff_no_queue'
Phil Sutter says:
====================
net: Convert drivers to IFF_NO_QUEUE and cleanup afterwards
This series converts in-tree users away from the old and deprecated
'tx_queue_len = 0' idiom, adds a warning to notify out-of-tree driver
maintainers that there is need for action on their behalf and finally drops any
workarounds in scheduling algorithm implementations.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:49 +0000 (10:30 +0200)]
net: sched: drop all special handling of tx_queue_len == 0
Those were all workarounds for the formerly double meaning of
tx_queue_len, which broke scheduling algorithms if untreated.
Now that all in-tree drivers have been converted away from setting
tx_queue_len = 0, it should be safe to drop these workarounds for
categorically broken setups.
Signed-off-by: Phil Sutter <phil@nwl.cc> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:48 +0000 (10:30 +0200)]
net: warn if drivers set tx_queue_len = 0
Due to the introduction of IFF_NO_QUEUE, there is a better way for
drivers to indicate that no qdisc should be attached by default. Though,
the old convention can't be dropped since ignoring that setting would
break drivers still using it. Instead, add a warning so out-of-tree
driver maintainers get a chance to adjust their code before we finally
get rid of any special handling of tx_queue_len == 0.
Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:47 +0000 (10:30 +0200)]
staging: wilc1000: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc> Cc: Johnny Kim <johnny.kim@atmel.com> Cc: Rachel Kim <rachel.kim@atmel.com> Cc: Dean Lee <dean.lee@atmel.com> Cc: Chris Park <chris.park@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:44 +0000 (10:30 +0200)]
net: batman-adv: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc> Cc: Marek Lindner <mareklindner@neomailbox.ch> Cc: Simon Wunderlich <sw@simonwunderlich.de> Cc: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:39 +0000 (10:30 +0200)]
net: bonding: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc> Cc: Jay Vosburgh <j.vosburgh@gmail.com> Cc: Veaceslav Falico <vfalico@gmail.com> Cc: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 18 Aug 2015 04:33:06 +0000 (21:33 -0700)]
Merge branch 'Identifier-Locator-Addressing'
Tom Herbert says:
====================
net: Identifier Locator Addressing - Part I
This patch set provides rudimentary support for Identifier Locator
Addressing or ILA. The basic concept of ILA is that we split an IPv6
address into a 64 bit locator and 64 bit identifier. The identifier is
the identity of an entity in communication ("who"), and the locator
expresses the location of the entity ("where"). Applications
use externally visible address that contains the identifier.
When a packet is actually sent, a translation is done that
overwrites the first 64 bits of the address with a locator.
The packet can then be forwarded over the network to the host where
the addressed entity is located. At the receiver, the reverse
translation is done so the that the application sees the original,
untranslated address. Presumably an external control plane will
provide identifier->locator mappings.
v2:
- Fix compilation erros when LWT not configured
- Consolidate ILA into a single ila.c
v3:
- Change pseudohdr argument od inet_proto_csum_replace functions to
be a bool
v4:
- In ila_build_state check locator being in netlink params before
allocating tunnel state
The data path for ILA is a simple NAT translation that only operates
on the upper 64 bits of a destination address in IPv6 packets. The
basic process is:
1) Lookup 64 bit identifier (lower 64 bits of destination)
2) If a match is found
a) Overwrite locator (upper 64 bits of destination) with
the new locator
b) Adjust any checksum that has destination address included in
pseudo header
3) Send or receive packet
ILA is a means to implement tunnels or network virtualization without
encapsulation. Since there is no encapsulation involved, we assume that
stateless support in the network for IPv6 (e.g. RSS, ECMP, TSO, etc.)
just works. Also, since we're minimally changing the packet many of
the worries about encapsulation (MTU, checksum, fragmentation) are
not relevant. The downside is that, ILA is not extensible like other
encapsulations (GUE for instance) so it might not be appropriate for
all use cases. Also, this only makes sense to do in IPv6!
A key aspect of ILA is performance. The intent is that ILA would be
used in data centers in virtualizing tasks or jobs. In the fullest
incarnation all intra data center communications might be targeted to
virtual ILA addresses. This is basically adding a new virtualization
capability to the existing services in a datacenter, so there is a
strong expectation is that this does not degrade performance for
existing applications.
Performance seems to be dependent on how ILA is hooked into kernel.
ILA can be implemented under some different models:
- Mechanically it is a form a stateless DNAT
- It can be thought of as a type of (source) routing
- As a functional replacement of encapsulation
In this patch set we hook into the data path using Light Weight
Tunnels (LWT) infrastructure. As part of that, we add support in LWT
to redirect dst input. iproute will be modified to take a new ila encap
type. ILA can be configured like:
ip route add 3333:0:0:1:5555:0:2:0/128 \
encap ila 2001:0:0:2 via 2401:db00:20:911a:face:0:27:0
ip -6 addr add 3333:0:0:1:5555:0:1:0/128 dev eth0
ip route add table local local 2001:0:0:1:5555:0:1:0/128
encap ila 3333:0:0:1 dev lo
So sending to destination 3333:0:0:1:5555:0:2:0 will have destination
of 2001:0:0:2:5555:0:2:0 on the wire.
Performance results are below. With ILA we see about a 10% drop in
pps compared to non-ILA. Much of this drop can be attributed to the
loss of early demux on input (translation occurs after it is attempted).
We will address this in the next patch set. Also, IPvlan input path
does not work with ILA since the routing is bypassed-- this will
be addressed in a future patch.
Performance testing:
Performing netperf TCP_RR with 200 clients:
Non-ILA baseline
84.92% CPU utilization 1861922.9 tps
93/163/330 50/90/99% latencies
ILA single destination
83.16% CPU utilization 1679683.4 tps
105/180/332 50/90/99% latencies
References:
Slides from netconf:
http://vger.kernel.org/netconf2015Herbert-ILA.pdf
Slides from presentation at IETF:
https://www.ietf.org/proceedings/92/slides/slides-92-nvo3-1.pdf
Tom Herbert [Mon, 17 Aug 2015 20:42:27 +0000 (13:42 -0700)]
net: Identifier Locator Addressing module
Adding new module name ila. This implements ILA translation. Light
weight tunnel redirection is used to perform the translation in
the data path. This is configured by the "ip -6 route" command
using the "encap ila <locator>" option, where <locator> is the
value to set in destination locator of the packet. e.g.
ip -6 route add 3333:0:0:1:5555:0:1:0/128 \
encap ila 2001:0:0:1 via 2401:db00:20:911a:face:0:25:0
Sets a route where 3333:0:0:1 will be overwritten by
2001:0:0:1 on output.
Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Mon, 17 Aug 2015 20:42:25 +0000 (13:42 -0700)]
net: Change pseudohdr argument of inet_proto_csum_replace* to be a bool
inet_proto_csum_replace4,2,16 take a pseudohdr argument which indicates
the checksum field carries a pseudo header. This argument should be a
boolean instead of an int.
Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Sun, 16 Aug 2015 13:04:50 +0000 (16:04 +0300)]
net/mlx5e: Ethtool link speed setting fixes
- Port speed settings are applied by the device only upon
port admin status transition from DOWN to UP.
So we enforce this transition regardless of the port's
current operation state (which may be occasionally DOWN if
for example the network cable is disconnected).
- Fix the PORT_UP/DOWN device interface enum
- Set the local_port bit in the device PAOS register
- EXPORT the PAOS (Port Administrative and Operational Status)
register set/query access functions.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Sun, 16 Aug 2015 13:04:49 +0000 (16:04 +0300)]
net/mlx5e: HW LRO changes/fixes
- Change the maximum LRO session size from 16KB to 64KB
- Reduce the LRO session timeout from 512us to 32us in
order to reduce the TCP latency of non-LRO'ed flows.
- Fix skb_shinfo(skb)->gso_size and set skb_shinfo(skb)->gso_type.
- Fix a bug accessing un-initialized mdev pointer.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Sun, 16 Aug 2015 13:04:46 +0000 (16:04 +0300)]
net/mlx5e: Make RSS indirection table size a constant
The indirection table size was defined by a variable that
was actually assigned a constant value.
Since we do not have any forseen intension to make it configurable
we simply made it a constant.
We also limit the number of channels such that the RSS indirection
table could always populate all RX rings.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Here's what's likely the last bluetooth-next pull request for 4.3:
- 6lowpan/802.15.4 refactoring, cleanups & fixes
- Document 6lowpan netdev usage in Documentation/networking/6lowpan.txt
- Support for UART based QCA Bluetooth controllers
- Power management support for Broeadcom Bluetooth controllers
- Change LE connection initiation to always use passive scanning first
- Support for new Silicon Wave USB ID
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 17 Aug 2015 22:25:30 +0000 (15:25 -0700)]
Merge branch 'enic-devcmd2'
Govindarajulu Varadarajan says:
====================
enic: add devcmd2
This series adds new devcmd2 support. The first two patches are code
refactoring.
devcmd is an interface for driver to communicate with fw/adaptor. It
involves writing data to hardware registers and waiting for the result.
This mechanism does not scale well. The queuing of "no wait" devcmds is
done in firmware memory rather than on the host. Firmware memory is a
rather more scarce and valuable resource than host memory. A devcmd storm
from one vf can disrupt the service on other pf/vf. The lack of flow
control allows for possible denial of server from one VM to another.
Devcmd2 uses work queue to post the devcmds, just like tx work queue. This
allows better flow control.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
devcmd is an interface for driver to communicate with fw/adaptor. It
involves writing data to hardware registers and waiting for the result.
This mechanism does not scale well. The queuing of "no wait" devcmds is
done in firmware memory rather than on the host. Firmware memory is a
rather more scarce and valuable resource than host memory. A devcmd storm
from one vf can disrupt the service on other pf/vf. The lack of flow
control allows for possible denial of server from one VM to another.
Devcmd2 uses work queue to post the devcmds, just like tx work queue. This
allows better flow control.
Initialize devcmd2, if fails we fall back to devcmd1.
Also change the driver version.
Signed-off-by: N V V Satyanarayana Reddy <nalreddy@cisco.com> Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Add devcmd resources to vnic_res_type. Add data types used by devcmd.
Signed-off-by: N V V Satyanarayana Reddy <nalreddy@cisco.com> Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
enic: use netdev_<foo> or dev_<foo> instead of pr_<foo>
pr_info does not give any details about the interface involved. This patch
uses netdev_info for printing the message. Use dev_info where netdev is not
ready.
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Some of the structure definitions are in .c file to make them private to
that file. This patch moves the struct definition to .h file, So that their
definitions are accessible from other files.
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Fri, 14 Aug 2015 22:37:15 +0000 (00:37 +0200)]
rhashtable-test: extend to test concurrency
After having tested insertion, lookup, table walk and removal, spawn a
number of threads running operations on the same rhashtable. Each of
them will:
1) insert it's own set of objects,
2) lookup every successfully inserted object and finally
3) remove objects in several rounds until all of them have been removed,
making sure the remaining ones are still found after each round.
This should put a good amount of load onto the system and due to
synchronising thread startup via two semaphores also extensive
concurrent table access.
The default number of ten threads returned within half a second on my
local VM with two cores. Running 200 threads took about four seconds. If
slow systems suffer too much from this though, the default could be
lowered or even set to zero so this extended test does not run at all by
default.
Signed-off-by: Phil Sutter <phil@nwl.cc> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 17 Aug 2015 21:31:42 +0000 (14:31 -0700)]
Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge
Antonio Quartulli says:
====================
Included changes:
- avoid integer overflow in GW selection routine
- prevent race condition by making capability bit changes atomic (use
clear/set/test_bit)
- fix synchronization issue in mcast tvlv handler
- fix crash on double list removal of TT Request objects
- fix leak by puring packets enqueued for sending upon iface removal
- ensure network header pointer is set in skb
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 17 Aug 2015 21:25:04 +0000 (14:25 -0700)]
Merge tag 'mac80211-next-for-davem-2015-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Another pull request for the next cycle, this time with quite
a bit of content:
* mesh fixes/improvements from Alexis, Bob, Chun-Yeow and Jesse
* TDLS higher bandwidth support (Arik)
* OCB fixes from Bertold Van den Bergh
* suspend/resume fixes from Eliad
* dynamic SMPS support for minstrel-HT (Krishna Chaitanya)
* VHT bitrate mask support (Lorenzo Bianconi)
* better regulatory support for 5/10 MHz channels (Matthias May)
* basic support for MU-MIMO to avoid the multi-vif issue (Sara Sharon)
along with a number of other cleanups.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 17 Aug 2015 21:22:48 +0000 (14:22 -0700)]
Merge branch 'bpf_fanout'
Willem de Bruijn says:
====================
packet: add cBPF and eBPF fanout modes
Allow programmable fanout modes. Support both classical BPF programs
passed directly and extended BPF programs passed by file descriptor.
One use case is packet steering by deep packet inspection, for
instance for packet steering by application layer header fields.
Separate the configuration of the fanout mode and the configuration
of the program, to allow dynamic updates to the latter at runtime.
Changes
v1 -> v2:
- follow SO_LOCK_FILTER semantics on filter updates
- only accept eBPF programs of type BPF_PROG_TYPE_SOCKET_FILTER
- rename PACKET_FANOUT_BPF to PACKET_FANOUT_CBPF to match
man 2 bpf usage: "classic" vs. "extended" BPF.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Sat, 15 Aug 2015 02:31:37 +0000 (22:31 -0400)]
selftests/net: test extended BPF fanout mode
Test PACKET_FANOUT_EBPF by inserting a program into the the kernel
with bpf(), then attaching it to the fanout group. Observe the same
payload-based distribution as in the PACKET_FANOUT_CBPF test.
Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Sat, 15 Aug 2015 02:31:36 +0000 (22:31 -0400)]
selftests/net: test classic bpf fanout mode
Test PACKET_FANOUT_CBPF by inserting a cBPF program that selects a
socket by payload. Requires modifying the test program to send
packets with multiple payloads.
Also fix a bug in testing the return value of mmap()
Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Sat, 15 Aug 2015 02:31:35 +0000 (22:31 -0400)]
packet: add extended BPF fanout mode
Add fanout mode PACKET_FANOUT_EBPF that accepts an en extended BPF
program to select a socket.
Update the internal eBPF program by passing to socket option
SOL_PACKET/PACKET_FANOUT_DATA a file descriptor returned by bpf().
Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Sat, 15 Aug 2015 02:31:34 +0000 (22:31 -0400)]
packet: add classic BPF fanout mode
Add fanout mode PACKET_FANOUT_CBPF that accepts a classic BPF program
to select a socket.
This avoids having to keep adding special case fanout modes. One
example use case is application layer load balancing. The QUIC
protocol, for instance, encodes a connection ID in UDP payload.
Also add socket option SOL_PACKET/PACKET_FANOUT_DATA that updates data
associated with the socket group. Fanout mode PACKET_FANOUT_CBPF is the
only user so far.
Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Benc [Fri, 14 Aug 2015 14:40:40 +0000 (16:40 +0200)]
lwtunnel: rename ip lwtunnel attributes
We already have IFLA_IPTUN_ netlink attributes. The IP_TUN_ attributes look
very similar, yet they serve very different purpose. This is confusing for
anyone trying to implement a user space tool supporting lwt.
As the IP_TUN_ attributes are used only for the lightweight tunnels, prefix
them with LWTUNNEL_IP_ instead to make their purpose clear. Also, it's more
logical to have them in lwtunnel.h together with the encap enum.
Fixes: 3093fbe7ff4b ("route: Per route IP tunnel metadata via lightweight tunnel") Signed-off-by: Jiri Benc <jbenc@redhat.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Guenter Roeck [Mon, 17 Aug 2015 20:45:36 +0000 (13:45 -0700)]
smsc911x: Fix crash seen if neither ACPI nor OF is configured or used
Commit 0b50dc4fc971 ("Convert smsc911x to use ACPI as well as DT") makes
the call to smsc911x_probe_config() unconditional, and no longer fails if
there is no device node. device_get_phy_mode() is called unconditionally,
and if there is no phy node configured returns an error code. This error
code is assigned to phy_interface, and interpreted elsewhere in the code
as valid phy mode. This in turn causes qemu to crash when running a
variant of realview_pb_defconfig.
qemu: hardware error: lan9118_read: Bad reg 0x86
Fixes: 0b50dc4fc971 ("Convert smsc911x to use ACPI as well as DT") Cc: Jeremy Linton <jeremy.linton@arm.com>
Cc Graeme Gregory <graeme.gregory@linaro.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Jesse Brandeburg [Fri, 14 Aug 2015 01:34:03 +0000 (18:34 -0700)]
net: fix endian check warning in etherdevice.h
Sparse builds have been warning for a really long time now
that etherdevice.h has a conversion that is unsafe.
include/linux/etherdevice.h:79:32: warning: restricted __be16 degrades to integer
This code change fixes the issue and generates the exact
same assembly before/after (checked on x86_64)
Fixes: 2c722fe1c821 (etherdevice: Optimize a few is_<foo>_ether_addr functions) Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> CC: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 17 Aug 2015 18:50:25 +0000 (11:50 -0700)]
Merge branch 'iff_no_queue'
Phil Sutter says:
====================
net: introduce IFF_NO_QUEUE as successor of zero tx_queue_len
This series adds a new private net_device flag indicating that a device may
(and probably should) be used without a queueing discipline attached to it.
This is already common practice for many virtual device types like e.g.
loopback, VLAN (802.1Q) or bridges (802.1D). The reason for this is that these
devices lack an underlying layer which could impose back pressure and therefore
making a TX queue necessary to not slow down senders.
Up to now, drivers being aware of the above applying to them set
dev->tx_queue_len to zero to indicate no qdisc should be attached to the
interface they drive and the kernel reacts upon this by assigning the noop
qdisc instead of the default pfifo_fast. This implicit agreement though leads
to an inconvenient situation once a user tries to attach a real qdisc to these
devices, as the formerly special tx_queue_len value becomes a regular one,
limiting the queue to zero packets and thus prevents any TX from happening. To
overcome this, practically all qdisc implementations intercept and sanitize the
malicious value.
With this series applied, drivers may signal the lack of need for a qdisc
without having to tamper with tx_queue_len, making fallbacks in qdiscs and
caveats in userspace unnecessary.
Upon upstream acceptance, this series will be followed up by a set of patches
converting device drivers, adding a warning so out-of-tree driver authors get
aware of this change and dropping all special handling of tx_queue_len in
net/sched/.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Thu, 13 Aug 2015 17:01:06 +0000 (19:01 +0200)]
net: declare new net_device priv_flag IFF_NO_QUEUE
This private net_device flag can be set by drivers to inform that a
device runs fine without a qdisc attached. This was formerly done by
setting tx_queue_len to zero.
Signed-off-by: Phil Sutter <phil@nwl.cc> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
A zero length payload means that no TLV (Type Length Value) data has
been passed. Prior to this patch a non-existing TLV could be sanity
checked with TLV_OK() resulting in random behavior where a user
sending an empty message occasionally got a incorrect "operation not
supported" message back.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Erik Hugne <erik.hugne@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Mon, 17 Aug 2015 05:28:25 +0000 (08:28 +0300)]
bnx2: Fix bandwidth allocation for some MF modes
Management firmware tells driver in case bandwidth configuration for
a specific function exists, but [regretably] the same field has different
meanings depending on the multi-function mode - it can either be
a percentile value or an actual speed.
For newer multi-function modes current logic is incorrect -
driver understands values as actual speeds instead of percentages,
causing the resulting chip configuration to be incorrect.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sat, 15 Aug 2015 17:54:07 +0000 (10:54 -0700)]
ipv4: fix refcount leak in fib_check_nh()
fib_lookup() forces FIB_LOOKUP_NOREF flag, while fib_table_lookup()
does not.
This patch solves the typical message at reboot time or device
dismantle :
unregister_netdevice: waiting for eth0 to become free. Usage count = 4
Fixes: 3bfd847203c6 ("net: Use passed in table for nexthop lookups") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: David Ahern <dsa@cumulusnetworks.com> Acked-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes 802.15.4 packet layer registration when mutliple
lowpan interfaces will be added. We need to register the packet layer at
the first lowpan interface and deregister it at the last interface. This
done by open_count variable which is protected by rtnl.
Additional do a quiet fix by adding dev_put(real_dev) when netdev
registration fails, which fix the refcount for the wpan dev.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Simon Wunderlich [Wed, 24 Jun 2015 12:50:20 +0000 (14:50 +0200)]
batman-adv: remove broadcast packets scheduled for purged outgoing if
When an interface is purged, the broadcast packets scheduled for this
interface should get purged as well.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Linus Lüssing [Tue, 16 Jun 2015 15:10:26 +0000 (17:10 +0200)]
batman-adv: Fix potential synchronization issues in mcast tvlv handler
So far the mcast tvlv handler did not anticipate the processing of
multiple incoming OGMs from the same originator at the same time. This
can lead to various issues:
* Broken refcounting: For instance two mcast handlers might both assume
that an originator just got multicast capabilities and will together
wrongly decrease mcast.num_disabled by two, potentially leading to
an integer underflow.
* Potential kernel panic on hlist_del_rcu(): Two mcast handlers might
one after another try to do an
hlist_del_rcu(&orig->mcast_want_all_*_node). The second one will
cause memory corruption / crashes.
(Reported by: Sven Eckelmann <sven@narfation.org>)
Right in the beginning the code path makes assumptions about the current
multicast related state of an originator and bases all updates on that. The
easiest and least error prune way to fix the issues in this case is to
serialize multiple mcast handler invocations with a spinlock.
Fixes: 60432d756cf0 ("batman-adv: Announce new capability via multicast TVLV") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Linus Lüssing [Tue, 16 Jun 2015 15:10:25 +0000 (17:10 +0200)]
batman-adv: Make MCAST capability changes atomic
Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One
OGM handler might undo the set/clear of a specific bit from another
handler run in between.
Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions.
Fixes: 60432d756cf0 ("batman-adv: Announce new capability via multicast TVLV") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Linus Lüssing [Tue, 16 Jun 2015 15:10:24 +0000 (17:10 +0200)]
batman-adv: Make TT capability changes atomic
Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One
OGM handler might undo the set/clear of a specific bit from another
handler run in between.
Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions.
Fixes: e17931d1a61d ("batman-adv: introduce capability initialization bitfield") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Linus Lüssing [Tue, 16 Jun 2015 15:10:23 +0000 (17:10 +0200)]
batman-adv: Make NC capability changes atomic
Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One
OGM handler might undo the set/clear of a specific bit from another
handler run in between.
Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions.
Linus Lüssing [Tue, 16 Jun 2015 15:10:22 +0000 (17:10 +0200)]
batman-adv: Make DAT capability changes atomic
Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One
OGM handler might undo the set/clear of a specific bit from another
handler run in between.
Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions.
Johannes Berg [Mon, 13 Jul 2015 10:17:25 +0000 (12:17 +0200)]
average: provide macro to create static EWMA
Having the EWMA parameters stored in the runtime struct imposes
memory requirements for the constant values that could just be
inlined in the code. This particularly makes sense if there are
a lot of such structs, for example in mac80211 in the station
table where each station has a number of these in an array, and
there can be many stations.
Provide a macro DECLARE_EWMA() that declares the necessary struct
and inline functions to access it with the parameters hard-coded;
using this also means the user no longer needs to 'select AVERAGE'
as it's entirely self-contained.
In the mac80211 case, on x86-64, this actually slightly *reduces*
code size, while also saving 80 bytes of runtime memory per sta.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Su Kang Yin [Fri, 7 Aug 2015 08:54:10 +0000 (16:54 +0800)]
mac80211_hwsim: unregister genetlink family properly
During hwsim_init_netlink(), we should call genl_unregister_family()
if failed on netlink_register_notifier() since the genetlink is
already registered.
Signed-off-by: Su Kang Yin <cantona@cantona.net> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
mac80211: remove ieee80211_tx_rate dependency in rate mask code
Remove ieee80211_tx_rate dependency in rate_idx_match_legacy_mask(),
rate_idx_match_mcs_mask() and rate_idx_match_mask() in order to use the
previous logic to define a ratemask in rate_control_set_rates() for
station rate table. Moreover move rate mask definition logic in
rate_control_cap_mask()
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>