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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 08:30:46 +0000 (10:30 +0200)]
net: caif: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:45 +0000 (10:30 +0200)]
net: hsr: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Arvid Brodin <arvid.brodin@alten.se>
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 08:30:43 +0000 (10:30 +0200)]
net: mac80211_hwsim: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:42 +0000 (10:30 +0200)]
net: hostap: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Jouni Malinen <j@w1.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:41 +0000 (10:30 +0200)]
net: dsa: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:40 +0000 (10:30 +0200)]
net: ipvlan: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Mahesh Bandewar <maheshb@google.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>
Phil Sutter [Tue, 18 Aug 2015 08:30:38 +0000 (10:30 +0200)]
net: 6lowpan: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:37 +0000 (10:30 +0200)]
net: bridge: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:36 +0000 (10:30 +0200)]
net: 8021q: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:35 +0000 (10:30 +0200)]
net: vxlan: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:34 +0000 (10:30 +0200)]
net: team: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:33 +0000 (10:30 +0200)]
net: nlmon: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:32 +0000 (10:30 +0200)]
net: loopback: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:31 +0000 (10:30 +0200)]
net: geneve: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:30 +0000 (10:30 +0200)]
net: dummy: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Tue, 18 Aug 2015 08:30:29 +0000 (10:30 +0200)]
net: veth: enable noqueue operation by default
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Pavel Emelyanov <xemul@openvz.org>
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
I-D:
https://tools.ietf.org/html/draft-herbert-nvo3-ila-00
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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 20:42:26 +0000 (13:42 -0700)]
net: Add inet_proto_csum_replace_by_diff utility function
This function updates a checksum field value and skb->csum based on
a value which is the difference between the old and new checksum.
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>
Tom Herbert [Mon, 17 Aug 2015 20:42:24 +0000 (13:42 -0700)]
lwt: Add support to redirect dst.input
This patch adds the capability to redirect dst input in the same way
that dst output is redirected by LWT.
Also, save the original dst.input and and dst.out when setting up
lwtunnel redirection. These can be called by the client as a pass-
through.
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 18 Aug 2015 04:24:59 +0000 (21:24 -0700)]
enic: Fix sparse warning in vnic_devcmd_init().
>> drivers/net/ethernet/cisco/enic/vnic_dev.c:1095:13: sparse: incorrect type in assignment (different address spaces)
drivers/net/ethernet/cisco/enic/vnic_dev.c:1095:13: expected void *res
drivers/net/ethernet/cisco/enic/vnic_dev.c:1095:13: got void [noderef] <asn:2>*
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 18 Aug 2015 04:22:26 +0000 (21:22 -0700)]
mlx5e: Fix sparse warnings in mlx5e_handle_csum().
>> drivers/net/ethernet/mellanox/mlx5/core/en_rx.c:173:44: sparse: incorrect type in argument 1 (different base types)
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c:173:44: expected restricted __sum16 [usertype] n
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c:173:44: got restricted __be16 [usertype] check_sum
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Sun, 16 Aug 2015 23:13:27 +0000 (17:13 -0600)]
inet: Move VRF table lookup to inlined function
Table lookup compiles out when VRF is not enabled.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Sun, 16 Aug 2015 16:26:49 +0000 (10:26 -0600)]
net: Fix docbook warning for IFF_VRF_MASTER enum
kbuild test robot reported:
tree: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head:
d52736e24fe2e927c26817256f8d1a3c8b5d51a0
commit:
4e3c89920cd3a6cfce22c6f537690747c26128dd [751/762] net: Introduce VRF related flags and helpers
reproduce: make htmldocs
>> Warning(include/linux/netdevice.h:1293): Enum value 'IFF_VRF_MASTER' not described in enum 'netdev_priv_flags'
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Sun, 16 Aug 2015 13:49:20 +0000 (07:49 -0600)]
net: Updates to netif_index_is_vrf
As Eric noted netif_index_is_vrf is not called with rcu_read_lock held,
so wrap the dev_get_by_index_rcu in rcu_read_lock and unlock.
If VRF is not enabled or oif is 0 skip the device lookup. In both cases
index cannot be the VRF master.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 17 Aug 2015 22:51:36 +0000 (15:51 -0700)]
Merge branch 'mlx5e-next'
Achiad Shochat says:
====================
Driver updates 16-Aug-2015
This patchset contains bug fixes, new RSS and pause parameters ethtool
options, and support for RX CHECKSUM_COMPLETE.
Patchset was applied and tested over commit
adc6310 ("Merge branch
'mv88e6xxx-switchdev-fdb'").
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Sun, 16 Aug 2015 13:04:52 +0000 (16:04 +0300)]
net/mlx5e: Support RX CHECKSUM_COMPLETE
Only for packets with first ethertype set to IPv4/6 for now.
Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Sun, 16 Aug 2015 13:04:51 +0000 (16:04 +0300)]
net/mlx5e: Support ethtool get/set_pauseparam
Only rx/tx pause settings.
Autoneg setting is currently not supported.
Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Sun, 16 Aug 2015 13:04:50 +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 13:04:48 +0000 (16:04 +0300)]
net/mlx5e: Support smaller RX/TX ring sizes
We un-intentionally limited the minimum rings size too much.
TX minimum ring size reduced from 128 to 64.
RX minimum ring size reduced from 128 to 2.
Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Sun, 16 Aug 2015 13:04:47 +0000 (16:04 +0300)]
net/mlx5e: Add ethtool RSS configuration options
- get_rxfh_key_size
- get_rxfh_indir_size
- get/set_rxfh indirection table and RSS Toeplitz hash key
- get_rxnfc
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>
Achiad Shochat [Sun, 16 Aug 2015 13:04:45 +0000 (16:04 +0300)]
net/mlx5e: Have a single RSS Toeplitz hash key
No need to generate a unique key per TIR.
Generating a single key per netdev and copying it to all
its TIRs.
Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 17 Aug 2015 22:41:21 +0000 (15:41 -0700)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:
====================
pull request: bluetooth-next 2015-08-16
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>
Govindarajulu Varadarajan [Sat, 15 Aug 2015 20:14:54 +0000 (01:44 +0530)]
enic: add devcmd2
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>
Govindarajulu Varadarajan [Sat, 15 Aug 2015 20:14:53 +0000 (01:44 +0530)]
enic: add devcmd2 resources
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>
Govindarajulu Varadarajan [Sat, 15 Aug 2015 20:14:52 +0000 (01:44 +0530)]
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>
Govindarajulu Varadarajan [Sat, 15 Aug 2015 20:14:51 +0000 (01:44 +0530)]
enic: move struct definition from .c to .h file
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>
David S. Miller [Mon, 17 Aug 2015 21:37:06 +0000 (14:37 -0700)]
net: Export bpf_prog_create_from_user().
Signed-off-by: David S. Miller <davem@davemloft.net>
Ian Morris [Fri, 14 Aug 2015 21:43:38 +0000 (22:43 +0100)]
ipv6: trivial whitespace fix
Change brace placement to be in line with coding standards
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
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./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>
David S. Miller [Mon, 17 Aug 2015 21:05:14 +0000 (14:05 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:
====================
pull request (net-next): ipsec-next 2015-08-17
1) Fix IPv6 ECN decapsulation for IPsec interfamily tunnels.
From Thomas Egerer.
2) Use kmemdup instead of duplicating it in xfrm_dump_sa().
From Andrzej Hajda.
3) Pass oif to the xfrm lookups so that it gets set on the flow
and the resolver routines can match based on oif.
From David Ahern.
4) Add documentation for the new xfrm garbage collector threshold.
From Alexander Duyck.
Please pull or let me know if there are problems.
====================
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 17:01:07 +0000 (19:01 +0200)]
net: sch_generic: react upon IFF_NO_QUEUE flag
Handle IFF_NO_QUEUE as alternative to tx_queue_len being 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>
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>
Richard Alpe [Mon, 17 Aug 2015 12:15:10 +0000 (14:15 +0200)]
tipc: don't sanity check non-existing TLV (NL compat)
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>
Alexander Aring [Sat, 15 Aug 2015 09:00:33 +0000 (11:00 +0200)]
ieee802154: 6lowpan: fix non-lowpan wpan interfaces
We receive all 802.15.4 frames on the packet handler "lowpan_rcv" this
patch checks if the wpan device belongs to a lowpan interface.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sat, 15 Aug 2015 09:00:32 +0000 (11:00 +0200)]
ieee802154: 6lowpan: fix packet layer registration
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>
Peter Poklop [Sat, 15 Aug 2015 18:47:09 +0000 (20:47 +0200)]
Bluetooth: btusb: mark 0c10:0000 devices with BTUSB_SWAVE
This patch enables quirk handling for Silicon Wave based devices and
fixes kernel bug with id 42985.
T: Bus=01 Lev=01 Prnt=01 Port=07 Cnt=04 Dev#= 6 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0c10 ProdID=0000 Rev=15.00
S: Manufacturer=SiW
S: Product=SiW
S: SerialNumber=
340A05F61100
C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr= 50mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
Signed-off-by: Peter Poklop <peter.poklop@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Linus Lüssing [Tue, 30 Jun 2015 21:45:26 +0000 (23:45 +0200)]
batman-adv: Fix potentially broken skb network header access
The two commits noted below added calls to ip_hdr() and ipv6_hdr(). They
need a correctly set skb network header.
Unfortunately we cannot rely on the device drivers to set it for us.
Therefore setting it in the beginning of the according ndo_start_xmit
handler.
Fixes:
1d8ab8d3c176 ("batman-adv: Modified forwarding behaviour for multicast packets")
Fixes:
ab49886e3da7 ("batman-adv: Add IPv4 link-local/IPv6-ll-all-nodes multicast support")
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>
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>
Marek Lindner [Sun, 21 Jun 2015 16:36:28 +0000 (00:36 +0800)]
batman-adv: protect tt request from double deletion
The list_del() calls were changed to list_del_init() to prevent
an accidental double deletion in batadv_tt_req_node_new().
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.
Fixes:
3f4841ffb336 ("batman-adv: tvlv - add network coding container")
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 15:10:22 +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.
Fixes:
17cf0ea455f1 ("batman-adv: tvlv - add distributed arp table container")
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>
Emmanuel Grumbach [Sun, 19 Jul 2015 13:09:12 +0000 (16:09 +0300)]
mac80211: fix BIT position for TDLS WIDE extended cap
The bit was not according to ieee80211 specification.
Fix that.
Reviewed-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 13 Jul 2015 10:26:46 +0000 (12:26 +0200)]
mac80211: use DECLARE_EWMA
Instead of using the out-of-line average calculation, use the new
DECLARE_EWMA() macro to declare a signal EWMA, and use that.
This actually *reduces* the code size slightly (on x86-64) while
also reducing the station info size by 80 bytes.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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>
Lorenzo Bianconi [Thu, 6 Aug 2015 21:47:33 +0000 (23:47 +0200)]
mac80211: add rate mask logic for vht rates
Define rc_rateidx_vht_mcs_mask array and rate_idx_match_vht_mcs_mask()
method in order to apply mcs mask for vht rates
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Lorenzo Bianconi [Thu, 6 Aug 2015 21:47:32 +0000 (23:47 +0200)]
mac80211: define rate_control_apply_mask_ratetbl()
Define rate_control_apply_mask_ratetbl() in order to apply ratemask in
rate_control_set_rates() for station rate table
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Lorenzo Bianconi [Thu, 6 Aug 2015 21:47:31 +0000 (23:47 +0200)]
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>
Lorenzo Bianconi [Thu, 6 Aug 2015 21:47:30 +0000 (23:47 +0200)]
mac80211: remove ieee80211_tx_info from rate_control_apply_mask signature
Remove unnecessary ieee80211_tx_info pointer from rate_control_apply_mask
signature. rate_control_apply_mask() will be used to define a ratemask in
rate_control_set_rates() for station rate table
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Bertold Van den Bergh [Wed, 5 Aug 2015 14:02:50 +0000 (16:02 +0200)]
mac80211: Make OCB mode set BSSID
Perform the BSS_CHANGED_BSSID action when joining an OCB network.
This is required to set the broadcast BSSID in some network drivers.
Signed-off-by: Bertold Van den Bergh <bertold.vandenbergh@esat.kuleuven.be>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Bertold Van den Bergh [Wed, 5 Aug 2015 14:02:42 +0000 (16:02 +0200)]
mac80211: Only accept data frames in OCB mode
Currently OCB mode accepts frames with bssid==broadcast and type!=beacon.
Some non-data frames are sent matching this, for example probe responses.
This results in unnecessary creation of STA entries.
Signed-off-by: Bertold Van den Bergh <bertold.vandenbergh@esat.kuleuven.be>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Bertold Van den Bergh [Wed, 5 Aug 2015 14:02:28 +0000 (16:02 +0200)]
mac80211: Set txrc.bss to true for OCB interfaces
To make mac80211 accept the multicast rate requested by the user the
rate control should be told that it is operating in BSS mode.
Without this, the default rate is selected in rate_control_send_low
(!pubsta and !txrc->bss)
Signed-off-by: Bertold Van den Bergh <bertold.vandenbergh@esat.kuleuven.be>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Bertold Van den Bergh [Wed, 5 Aug 2015 14:02:21 +0000 (16:02 +0200)]
nl80211: Allow setting multicast rate on OCB interfaces
Allow setting multicast rate on OCB interfaces.
Current behaviour results in EOPNOTSUPP when attempting this.
Signed-off-by: Bertold Van den Bergh <bertold.vandenbergh@esat.kuleuven.be>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Michal Kazior [Mon, 3 Aug 2015 08:55:24 +0000 (10:55 +0200)]
cfg80211: propagate set_wiphy failure to userspace
If driver failed to setup wiphy params (e.g. rts
threshold, fragmentation treshold) userspace
wasn't properly notified about this. This could
lead to user confusion who would think the command
succeeded even if that wasn't the case.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Matthias May [Fri, 17 Jul 2015 13:28:39 +0000 (15:28 +0200)]
cfg80211: regulatory: handle 5 and 10 MHz channels properly
The original assumption of 20MHz wide channels hasn't been true since
the addition of support for 5 and 10 MHz channels.
Change the code to no longer disable all channels that don't fit into
the 20MHz grid, but instead set the appropriate flags to disable
operation on specific bandwidths.
Signed-off-by: Matthias May <matthias.may@neratec.com>
[reword commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Ben YoungTae Kim [Fri, 14 Aug 2015 05:09:42 +0000 (22:09 -0700)]
Bluetooth: hciuart: Fix to use boolean flag with u32 type
debugfs_create_bool is asking to put u32 type pointer instead of bool
so that passing bool type with u32* cast will cause memory corruption
to read that value since it is handled by 4 bytes instead of 1 byte
inside.
Signed-off-by: Ben Young Tae Kim <ytkim@qca.qualcomm.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
David S. Miller [Fri, 14 Aug 2015 05:43:22 +0000 (22:43 -0700)]
Merge branch 'vrf-lite'
David Ahern says:
====================
VRF-lite - v6
In the context of internet scale routing a requirement that always comes
up is the need to partition the available routing tables into disjoint
routing planes. A specific use case is the multi-tenancy problem where
each tenant has their own unique routing tables and in the very least
need different default gateways.
This patch allows the ability to create virtual router domains (aka VRFs
(VRF-lite to be specific) in the linux packet forwarding stack. The main
observation is that through the use of rules and socket binding to interfaces,
all the facilities that we need are already present in the infrastructure. What
is missing is a handle that identifies a routing domain and can be used to
gather applicable rules/tables and uniqify neighbor selection. The scheme used
needs to preserves the notions of ECMP, and general routing principles.
This driver is a cross between functionality that the IPVLAN driver
and the Team drivers provide where a device is created and packets
into/out of the routing domain are shuttled through this device. The
device is then used as a handle to identify the applicable rules. The
VRF device is thus the layer3 equivalent of a vlan device.
The very important point to note is that this is only a Layer3 concept
so L2 tools (e.g., LLDP) do not need to be run in each VRF, processes can
run in unaware mode or select a VRF to be talking through. Also the
behavioral model is a generalized application of the familiar VRF-Lite
model with some performance paths that need optimization. (Specifically
the output route selector that Roopa, Robert, Thomas and EricB are
currently discussing on the MPLS thread)
High Level points
=================
1. Simple overlay driver (minimal changes to current stack)
* uses the existing fib tables and fib rules infrastructure
2. Modelled closely after the ipvlan driver
3. Uses current API and infrastructure.
* Applications can use SO_BINDTODEVICE or cmsg device indentifiers
to pick VRF (ping, traceroute just work)
* Standard IP Rules work, and since they are aggregated against the
device, scale is manageable
4. Completely orthogonal to Namespaces and only provides separation in
the routing plane (and ARP)
N2
N1 (all configs here) +---------------+
+--------------+ | |
|swp1 :10.0.1.1+----------------------+swp1 :10.0.1.2 |
| | | |
|swp2 :10.0.2.1+----------------------+swp2 :10.0.2.2 |
| | +---------------+
| VRF 1 |
| table 5 |
| |
+---------------+
| |
| VRF 2 | N3
| table 6 | +---------------+
| | | |
|swp3 :10.0.2.1+----------------------+swp1 :10.0.2.2 |
| | | |
|swp4 :10.0.3.1+----------------------+swp2 :10.0.3.2 |
+--------------+ +---------------+
Given the topology above, the setup needed to get the basic VRF
functions working would be
Create the VRF devices and associate with a table
ip link add vrf1 type vrf table 5
ip link add vrf2 type vrf table 6
Install the lookup rules that map table to VRF domain
ip rule add pref 200 oif vrf1 lookup 5
ip rule add pref 200 iif vrf1 lookup 5
ip rule add pref 200 oif vrf2 lookup 6
ip rule add pref 200 iif vrf2 lookup 6
ip link set vrf1 up
ip link set vrf2 up
Enslave the routing member interfaces
ip link set swp1 master vrf1
ip link set swp2 master vrf1
ip link set swp3 master vrf2
ip link set swp4 master vrf2
Connected and local routes are automatically moved from main and local
tables to the VRF table.
ping using VRF0 is simply
ping -I vrf0 10.0.1.2
Design Highlights
=================
If a device is enslaved to a VRF device (ie., associated with a VRF)
then:
1. Rx path
The master device index is used as the iif for all lookups.
2. Tx path
Similarly, for Tx the VRF device oif is used in the flow to direct
lookups to the table associated with the VRF via its rule. From there
the FLOWI_FLAG_VRFSRC flag is used to indicate that the oif should
not be used for FIB table lookups.
3. Connected and local routes
On link up for a device, connected and local routes are added to the
table associated with the VRF device, rather than the local and main
tables.
4. Socket lookups
Sockets operating in the VRF must be bound to the VRF device. As such
socket lookups compare the VRF device index to sk_bound_dev_if.
5. Neighbor entries
Neighbor entries are not impacted by the VRF device. Entries are
associated with a particular interface; the VRF association is indirect
via the interface-to-VRF device enslavement.
Version 6
- addressed comments from DaveM
- added patch to properly set oif in ip_send_unicast_reply. Needs to be
set to VRF device for proper FIB lookup
- added patch to handle IP fragments
Version 5
- dropped patch regarding socket lookups; no longer needed
+ removed vrf helpers no longer needed after this patch is dropped
- removed dev_open and close operations
+ no need to reset vrf data on an ifdown and creates problems if a
slave is deleted while the vrf interface is down (Thanks, Nikolay)
- cleanups for sparse warnings
+ make C=2 is now clean for vrf driver
Version 4
- builds are clean with and without VRF device enabled (no, yes and module)
- tightened the driver implementation
+ device add/delete, slave add/remove, and module unload are all clean
- fixed RCU references
+ with RCU and lock debugging enabled changes are clean through the
suite of tests
- TX path uses custom dst, so patch refactoring rtable allocation is
dropped along with the patch adding rt_nexthop helper
- dropped the task patch that adds default bind to interface for sockets
and the associated chvrf example command
+ the patches are a convenience for running unmodified code. They
are not needed for the core functionality. Any application with
support for SO_BINDTODEVICE works properly with this patch set.
Version 3
- addressed comments from first 2 RFCs with the exception of the name
Nicolas: We will do the name conversion once we agree on what the
correct name should be (vrf, mrf or something else)
- packets flow through the VRF device in both directions allowing the
following:
- tcpdump -i vrf<n>
- tc rules on vrf device
- netfilter rules on vrf device
TO-DO
=====
1. IPv6
2. ipsec, xfrms
- dst patch accepted into ipsec-next; will post VRF patch once merge happens
3. listen filter to allow 1 socket to work with multiple VRF devices
- i.e., bind to VRF's a, b, c only or NOT VRFs e, f, g
Eric B:
I have ipsec working with VRFs implemented using the VRF driver,
including the worst case scenario of complete duplication in the
networking config.
Thanks to Nikolay for his many, many code reviews whipping the device
driver into shape, and bug-Fixes and ideas from Hannes, Roopa Prabhu,
Jon Toppins, Jamal.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Thu, 13 Aug 2015 20:59:10 +0000 (14:59 -0600)]
net: Introduce VRF device driver
This driver borrows heavily from IPvlan and teaming drivers.
Routing domains (VRF-lite) are created by instantiating a VRF master
device with an associated table and enslaving all routed interfaces that
participate in the domain. As part of the enslavement, all connected
routes for the enslaved devices are moved to the table associated with
the VRF device. Outgoing sockets must bind to the VRF device to function.
Standard FIB rules bind the VRF device to tables and regular fib rule
processing is followed. Routed traffic through the box, is forwarded by
using the VRF device as the IIF and following the IIF rule to a table
that is mated with the VRF.
Example:
Create vrf 1:
ip link add vrf1 type vrf table 5
ip rule add iif vrf1 table 5
ip rule add oif vrf1 table 5
ip route add table 5 prohibit default
ip link set vrf1 up
Add interface to vrf 1:
ip link set eth1 master vrf1
Signed-off-by: Shrijeet Mukherjee <shm@cumulusnetworks.com>
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Thu, 13 Aug 2015 20:59:09 +0000 (14:59 -0600)]
net: frags: Add VRF device index to cache and lookup
Fragmentation cache uses information from the IP header to reassemble
packets. That information can be duplicated across VRFs -- same source
and destination addresses, protocol and id. Handle fragmentation with
VRFs by adding the VRF device index to entries in the cache and the
lookup arg.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Thu, 13 Aug 2015 20:59:08 +0000 (14:59 -0600)]
net: Use VRF index for oif in ip_send_unicast_reply
If output device is not specified use VRF device if input device is
enslaved. This is needed to ensure tcp acks and resets go out VRF device.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Thu, 13 Aug 2015 20:59:07 +0000 (14:59 -0600)]
net: Use passed in table for nexthop lookups
If a user passes in a table for new routes use that table for nexthop
lookups. Specifically, this solves the case where a connected route does
not exist in the main table, but only another table and then a subsequent
route is added with a next hop using the connected route. ie.,
$ ip route ls
default via 10.0.2.2 dev eth0
10.0.2.0/24 dev eth0 proto kernel scope link src 10.0.2.15
169.254.0.0/16 dev eth0 scope link metric 1003
192.168.56.0/24 dev eth1 proto kernel scope link src 192.168.56.51
$ ip route ls table 10
1.1.1.0/24 dev eth2 scope link
Without this patch adding a nexthop route fails:
$ ip route add table 10 2.2.2.0/24 via 1.1.1.10
RTNETLINK answers: Network is unreachable
With this patch the route is added successfully.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Thu, 13 Aug 2015 20:59:06 +0000 (14:59 -0600)]
net: Add routes to the table associated with the device
When a device associated with a VRF is brought up or down routes
should be added to/removed from the table associated with the VRF.
fib_magic defaults to using the main or local tables. Have it use
the table with the device if there is one.
A part of this is directing prefsrc validations to the correct
table as well.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Thu, 13 Aug 2015 20:59:05 +0000 (14:59 -0600)]
net: Fix up inet_addr_type checks
Currently inet_addr_type and inet_dev_addr_type expect local addresses
to be in the local table. With the VRF device local routes for devices
associated with a VRF will be in the table associated with the VRF.
Provide an alternate inet_addr lookup to use a specific table rather
than defaulting to the local table.
inet_addr_type_dev_table keeps the same semantics as inet_addr_type but
if the passed in device is enslaved to a VRF then the table for that VRF
is used for the lookup.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Thu, 13 Aug 2015 20:59:04 +0000 (14:59 -0600)]
net: Add inet_addr lookup by table
Currently inet_addr_type and inet_dev_addr_type expect local addresses
to be in the local table. With the VRF device local routes for devices
associated with a VRF will be in the table associated with the VRF.
Provide an alternate inet_addr lookup to use a specific table rather
than defaulting to the local table.
Signed-off-by: Shrijeet Mukherjee <shm@cumulusnetworks.com>
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>