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8 years agonetfilter: remove ip_conntrack* sysctl compat code
Pablo Neira Ayuso [Fri, 12 Aug 2016 11:47:06 +0000 (13:47 +0200)]
netfilter: remove ip_conntrack* sysctl compat code

This backward compatibility has been around for more than ten years,
since Yasuyuki Kozakai introduced IPv6 in conntrack. These days, we have
alternate /proc/net/nf_conntrack* entries, the ctnetlink interface and
the conntrack utility got adopted by many people in the user community
according to what I observed on the netfilter user mailing list.

So let's get rid of this.

Note that nf_conntrack_htable_size and unsigned int nf_conntrack_max do
not need to be exported as symbol anymore.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonetfilter: nf_tables: add hash expression
Laura Garcia Liebana [Thu, 11 Aug 2016 16:02:07 +0000 (18:02 +0200)]
netfilter: nf_tables: add hash expression

This patch adds a new hash expression, this provides jhash support but
this can be extended to support for other hash functions. The modulus
and seed already comes embedded into this new expression.

Use case example:

... meta mark set hash ip saddr mod 10

Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonetfilter: nf_tables: rename set implementations
Pablo Neira Ayuso [Tue, 9 Aug 2016 14:11:46 +0000 (16:11 +0200)]
netfilter: nf_tables: rename set implementations

Use nft_set_* prefix for backend set implementations, thus we can use
nft_hash for the new hash expression.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agoipvs: use nf_ct_kill helper
Florian Westphal [Wed, 3 Aug 2016 13:21:28 +0000 (15:21 +0200)]
ipvs: use nf_ct_kill helper

Once timer is removed from nf_conn struct we cannot open-code
the removal sequence anymore.

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonetfilter: use_nf_conn_expires helper in more places
Florian Westphal [Wed, 3 Aug 2016 00:45:07 +0000 (02:45 +0200)]
netfilter: use_nf_conn_expires helper in more places

... so we don't need to touch all of these places when we get rid of the
timer in nf_conn.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonetfilter: nf_dup4: remove redundant checksum recalculation
Liping Zhang [Sat, 30 Jul 2016 11:44:12 +0000 (19:44 +0800)]
netfilter: nf_dup4: remove redundant checksum recalculation

IP header checksum will be recalculated at ip_local_out, so
there's no need to calculated it here, remove it. Also update
code comments to illustrate it, and delete the misleading
comments about checksum recalculation.

Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonetfilter: physdev: add missed blank
Hangbin Liu [Mon, 25 Jul 2016 07:24:43 +0000 (15:24 +0800)]
netfilter: physdev: add missed blank

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonetfilter: conntrack: Only need first 4 bytes to get l4proto ports
Gao Feng [Sat, 23 Jul 2016 11:21:47 +0000 (19:21 +0800)]
netfilter: conntrack: Only need first 4 bytes to get l4proto ports

We only need first 4 bytes instead of 8 bytes to get the ports of
tcp/udp/dccp/sctp/udplite in their pkt_to_tuple function.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonet: ethernet: renesas: sh_eth: use new api ethtool_{get|set}_link_ksettings
Philippe Reynes [Tue, 9 Aug 2016 22:04:49 +0000 (00:04 +0200)]
net: ethernet: renesas: sh_eth: use new api ethtool_{get|set}_link_ksettings

The ethtool api {get|set}_settings is deprecated.
We move this driver to new api {get|set}_link_ksettings.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: renesas: sh_eth: use phydev from struct net_device
Philippe Reynes [Tue, 9 Aug 2016 22:04:48 +0000 (00:04 +0200)]
net: ethernet: renesas: sh_eth: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phy_dev in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosamples/bpf: fix bpf_perf_event_output prototype
Adam Barth [Wed, 10 Aug 2016 16:45:39 +0000 (09:45 -0700)]
samples/bpf: fix bpf_perf_event_output prototype

The commit 555c8a8623a3 ("bpf: avoid stack copy and use skb ctx for event output")
started using 20 of initially reserved upper 32-bits of 'flags' argument
in bpf_perf_event_output(). Adjust corresponding prototype in samples/bpf/bpf_helpers.h

Signed-off-by: Adam Barth <arb@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: macb: Add 64 bit addressing support for GEM
Harini Katakam [Tue, 9 Aug 2016 07:45:53 +0000 (13:15 +0530)]
net: macb: Add 64 bit addressing support for GEM

This patch adds support for 64 bit addressing and BDs.
-> Enable 64 bit addressing in DMACFG register.
-> Set DMA mask when design config register shows support for 64 bit addr.
-> Add new BD words for higher address when 64 bit DMA support is present.
-> Add and update TBQPH and RBQPH for MSB of BD pointers.
-> Change extraction and updation of buffer addresses to use
64 bit address.
-> In gem_rx extract address in one place insted of two and use a
separate flag for RXUSED.

Signed-off-by: Harini Katakam <harinik@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed*: Add support for ethtool link_ksettings callbacks.
Sudarsana Reddy Kalluru [Tue, 9 Aug 2016 07:51:23 +0000 (03:51 -0400)]
qed*: Add support for ethtool link_ksettings callbacks.

This patch adds the driver implementation for ethtool link_ksettings
callbacks. qed driver now defines/uses the qed specific masks for
representing link capability values. qede driver maps these values to
to new link modes defined by the kernel implementation of link_ksettings.

Please consider applying this to 'net-next' branch.

Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'cpsw-refactor'
David S. Miller [Thu, 11 Aug 2016 00:27:41 +0000 (17:27 -0700)]
Merge branch 'cpsw-refactor'

Ivan Khoronzhuk says:

====================
net: ethernet: ti: cpsw: split driver data and per ndev data

In dual_emac mode the driver can handle 2 network devices. Each of them can use
its own private data and common data/resources. This patchset splits common driver
data/resources and private per net device data.
It leads to:
- reduce memory usage
- increase code readability
- allows add a bunch of simplification
- create prerequisites to add multi-channel support,
  when channels are shared between net devices

Doesn't have bad impact on performance.
v2: https://lkml.org/lkml/2016/8/6/108

Since v2:
- removed patch:
  net: ethernet: ti: cpsw: fix int dbg message
- replaced patch:
  "net: ethernet: ti: cpsw: remove redundant check in napi poll"
  on "net: ethernet: ti: cpsw: remove intr dbg msg from poll handlers"
- removed macro "cpsw_get_slave_ndev"
- corrected some commits

Since v1:
- added several patch improvements
- avoided variable reordering in structures
- removed static variable for common function
- split big patch on several patches:
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: move ale, cpts and drivers params under cpsw_common
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:44 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: move ale, cpts and drivers params under cpsw_common

The ale, cpts, version, rx_packet_max, bus_freq, interrupt pacing
parameters are common per net device that uses the same h/w. So,
move them to common driver structure.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: move napi struct to cpsw_common
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:43 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: move napi struct to cpsw_common

The napi structs are common for both net devices in dual_emac
mode, In order to not hold duplicate links to them, move to
cpsw_common.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: move platform data and slaves info to cpsw_common
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:42 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: move platform data and slaves info to cpsw_common

These data are common for net devs in dual_emac mode. No need to hold
it for every priv instance, so move them under cpsw_common.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet; ethernet: ti: cpsw: move irq stuff under cpsw_common
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:41 +0000 (02:22 +0300)]
net; ethernet: ti: cpsw: move irq stuff under cpsw_common

The irq data are common for net devs in dual_emac mode. So no need to
hold these data in every priv struct, move them under cpsw_common.
Also delete irq_num var, as after optimization it's not needed.
Correct number of irqs to 2, as anyway, driver is using only 2,
at least for now.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: move cpdma resources to cpsw_common
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:40 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: move cpdma resources to cpsw_common

Every net device private struct holds links to shared cpdma resources.
No need to save and every time synchronize these resources per net dev.
So, move it to common driver struct.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: move links on h/w registers to cpsw_common
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:39 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: move links on h/w registers to cpsw_common

The pointers on h/w registers are common for every cpsw_private
instance, so no need to hold them for every ndev.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: replace pdev on dev
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:38 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: replace pdev on dev

No need to hold pdev link when only dev is needed.
This allows to simplify a bunch of cpsw->pdev->dev now and farther.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: create common struct to hold shared driver data
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:37 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: create common struct to hold shared driver data

This patch simply create holder for common data and as a start moves
pdev var to it.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: don't check slave num in runtime
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:36 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: don't check slave num in runtime

No need to check const slave num in runtime for every packet,
and ndev for slaves w/o ndev is anyway NULL. So remove redundant
check and macro.

Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: remove clk var from priv
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:35 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: remove clk var from priv

There is no need to hold link to clk, it's used only once
while probe.

Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: remove priv from cpsw_get_slave_port() parameters list
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:34 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: remove priv from cpsw_get_slave_port() parameters list

There is no need in priv here.

Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: remove intr dbg msg from poll handlers
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:33 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: remove intr dbg msg from poll handlers

At poll handler no possibility to figure out which network device is
handling packets, as cpdma channels are common for both network
devices in dual_emac mode. Currently, the messages are printed only
for one device, in fact, there is two. This print msg is incorrect
and seems is not very useful, so drop it from poll handler.

Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpsw: simplify submit routine
Ivan Khoronzhuk [Tue, 9 Aug 2016 23:22:32 +0000 (02:22 +0300)]
net: ethernet: ti: cpsw: simplify submit routine

As second net dev is created only in case of dual_emac mode, port
number can be figured out in simpler way. Also no need to pass
redundant ndev struct.

Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agorps: Inspect PPTP encapsulated by GRE to get flow hash
Gao Feng [Tue, 9 Aug 2016 04:38:24 +0000 (12:38 +0800)]
rps: Inspect PPTP encapsulated by GRE to get flow hash

The PPTP is encapsulated by GRE header with that GRE_VERSION bits
must contain one. But current GRE RPS needs the GRE_VERSION must be
zero. So RPS does not work for PPTP traffic.

In my test environment, there are four MIPS cores, and all traffic
are passed through by PPTP. As a result, only one core is 100% busy
while other three cores are very idle. After this patch, the usage
of four cores are balanced well.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Reviewed-by: Philip Prindeville <philipp@redfish-solutions.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'qdisc-hashtable'
David S. Miller [Thu, 11 Aug 2016 00:19:07 +0000 (17:19 -0700)]
Merge branch 'qdisc-hashtable'

Jiri Kosina says:

====================
Convert qdisc linked list into a hashtable

This is a respin of the v6 of the original patch [1], split into two-patch
series as requested by davem; first patch fixes all symbol conflicts
that'd happen once netdevice.h starts to include hashtable.h, the second
one performs the actual switch to hashtable.

I've preserved Cong's Reviewed-by:, as code-wise this series is identical
to the original v6 of the patch.

[1] lkml.kernel.org/r/alpine.LNX.2.00.1608011220580.22028@cbobk.fhfr.pm
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: sched: convert qdisc linked list to hashtable
Jiri Kosina [Wed, 10 Aug 2016 09:05:15 +0000 (11:05 +0200)]
net: sched: convert qdisc linked list to hashtable

Convert the per-device linked list into a hashtable. The primary
motivation for this change is that currently, we're not tracking all the
qdiscs in hierarchy (e.g. excluding default qdiscs), as the lookup
performed over the linked list by qdisc_match_from_root() is rather
expensive.

The ultimate goal is to get rid of hidden qdiscs completely, which will
bring much more determinism in user experience.

Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: resolve symbol conflicts with generic hashtable.h
Jiri Kosina [Wed, 10 Aug 2016 09:03:35 +0000 (11:03 +0200)]
net: resolve symbol conflicts with generic hashtable.h

This is a preparatory patch for converting qdisc linked list into a
hashtable. As we'll need to include hashtable.h in netdevice.h, we first
have to make sure that this will not introduce symbol conflicts for any of
the netdevice.h users.

Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoravb: use proper names for suspend/resume functions
Niklas Söderlund [Wed, 10 Aug 2016 11:09:49 +0000 (13:09 +0200)]
ravb: use proper names for suspend/resume functions

The patch 'ravb: add sleep PM suspend/resume support' used incorrect
function names containing 'runtime' for the suspend and resume
functions.

Reported-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ipconfig: fix use after free
Uwe Kleine-König [Wed, 10 Aug 2016 09:44:17 +0000 (11:44 +0200)]
net: ipconfig: fix use after free

ic_close_devs() calls kfree() for all devices's ic_device. Since commit
2647cffb2bc6 ("net: ipconfig: Support using "delayed" DHCP replies")
the active device's ic_device is still used however to print the
ipconfig summary which results in an oops if the memory is already
changed. So delay freeing until after the autoconfig results are
reported.

Fixes: 2647cffb2bc6 ("net: ipconfig: Support using "delayed" DHCP replies")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoravb: add sleep PM suspend/resume support
Niklas Söderlund [Wed, 3 Aug 2016 13:56:47 +0000 (15:56 +0200)]
ravb: add sleep PM suspend/resume support

The interface would not function after the system had been woken up
after have been suspended (echo mem > /sys/power/state) cycle. The
reason for this is that all device registers have been reset to its
default values. This patch adds sleep suspend and resume functions that
detached the interface at suspend and restore the registers and reattach
the interface at resume.

Only the registers that are only configured at probe time needs to be
explicitly restored by the resume handler. All other registers are
reconfigured by either reopening the device in the resume handler (if
the device was running when the system was suspended) or when the
interface is opened by a user at a later time.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dsa: b53: constify b53_io_ops structures
Julia Lawall [Tue, 9 Aug 2016 17:09:45 +0000 (19:09 +0200)]
net: dsa: b53: constify b53_io_ops structures

The b53_io_ops structures are never modified, so declare them as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Remove fib_local variable
David Ahern [Tue, 9 Aug 2016 13:51:06 +0000 (06:51 -0700)]
net: Remove fib_local variable

After commit 0ddcf43d5d4a ("ipv4: FIB Local/MAIN table collapse")
fib_local is set but not used. Remove it.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoppp: build ifname using unit identifier for rtnl based devices
Guillaume Nault [Tue, 9 Aug 2016 13:12:26 +0000 (15:12 +0200)]
ppp: build ifname using unit identifier for rtnl based devices

Userspace programs generally need to know the name of the ppp devices
they create. Both ioctl and rtnl interfaces use the ppp<suffix> sheme
to name them. But although the suffix used by the ioctl interface can
be known by userspace (it's the PPP unit identifier returned by the
PPPIOCGUNIT ioctl), the one used by the rtnl is only known by the
kernel.

This patch brings more consistency between ioctl and rtnl based ppp
devices by generating device names using the PPP unit identifer as
suffix in both cases. This way, userspace can always infer the name of
the devices they create.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoRDS: add __printf format attribute to error reporting functions
Nicolas Iooss [Fri, 5 Aug 2016 20:11:12 +0000 (22:11 +0200)]
RDS: add __printf format attribute to error reporting functions

This is helpful to detect at compile-time errors related to format
strings.

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMicrosemi VSC 8531/41 PHY Driver
Raju Lakkaraju [Fri, 5 Aug 2016 12:24:21 +0000 (17:54 +0530)]
Microsemi VSC 8531/41 PHY Driver

Hello,

I added all review comments and re-sending for review.

>From a5017f5878a92d2acec86a6a29b1498c457cb73a Mon Sep 17 00:00:00 2001
From: Nagaraju Lakkaraju <Raju.Lakkaraju@microsemi.com>
Date: Wed, 3 Aug 2016 18:28:24 +0530
Subject: [PATCH v2] net: phy: Add drivers for Microsemi PHYs

Signed-off-by: Nagaraju Lakkaraju <Raju.Lakkaraju@microsemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/fsl: use of_property_read_bool
Julia Lawall [Fri, 5 Aug 2016 11:24:12 +0000 (13:24 +0200)]
net/fsl: use of_property_read_bool

Use of_property_read_bool to check for the existence of a property.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e1,e2,x;
@@
- if (of_get_property(e1,e2,NULL))
- x = true;
- else
- x = false;
+ x = of_property_read_bool(e1,e2);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agohv_netvsc: Add handler for physical link speed change
Haiyang Zhang [Thu, 4 Aug 2016 17:42:15 +0000 (10:42 -0700)]
hv_netvsc: Add handler for physical link speed change

On Hyper-V host 2016 and later, VMs gets an event message of the physical
link speed when vSwitch is changed. This patch handles this message, so
the updated link speed can be reported by ethtool.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agohv_netvsc: Add query for initial physical link speed
Haiyang Zhang [Thu, 4 Aug 2016 17:42:14 +0000 (10:42 -0700)]
hv_netvsc: Add query for initial physical link speed

The physical link speed value will be reported by ethtool command.
The real speed is available from Windows 2016 host or later.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: ti: cpdma: remove used_desc counter
Grygorii Strashko [Thu, 4 Aug 2016 15:20:51 +0000 (18:20 +0300)]
net: ethernet: ti: cpdma: remove used_desc counter

The struct cpdma_desc_pool->used_desc field can be safely removed from
CPDMA driver (and hot patch) because used_descs counter is used just
for pool consistency check at CPDMA deinitialization and now this
check can be re-implemnted using gen_pool_size(pool->gen_pool) !=
gen_pool_avail(pool->gen_pool).
More over, this will allow to get rid of warnings in
cpdma_desc_pool_destro()-> WARN_ON(pool->used_desc) which may happen
because the used_descs is used unprotected, since CPDMA has been
switched to use genalloc, and may get wrong values on SMP.

Hence, remove used_desc from struct cpdma_desc_pool.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/sched/sch_hfsc.c: remove unused cl_myfadj
Michal Soltys [Tue, 2 Aug 2016 22:44:55 +0000 (00:44 +0200)]
net/sched/sch_hfsc.c: remove unused cl_myfadj

The code using this variable has been commented out in the past as it
was causing issues in upperlimited link-sharing scenarios.

Signed-off-by: Michal Soltys <soltys@ziu.info>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/sched/sch_hfsc.c: keep fsc and virtual times in sync; fix an old bug
Michal Soltys [Tue, 2 Aug 2016 22:44:54 +0000 (00:44 +0200)]
net/sched/sch_hfsc.c: keep fsc and virtual times in sync; fix an old bug

This patch simplifies how we update fsc and calculate vt from it - while
keeping the expected functionality identical with how hfsc behaves
curently. It also fixes a certain issue introduced with
a very old patch.

The idea is, that instead of correcting cl_vt before fsc curve update
(rtsc_min) and correcting cl_vt after calculation (rtsc_y2x) to keep
cl_vt local to the current period - we can simply rely on virtual times
and curve values always being in sync - analogously to how rsc and usc
function, except that we use virtual time here.

Why hasn't it been done since the beginning this way ? The likely scenario
(basing on the code trying to correct curves whenever possible) was to
keep the virtual times as small as possible - as they have tendency to
"gallop" forward whenever their siblings and other fair sharing
subtrees are idling. On top of that, current code is subtly bugged, so
cumulative time (without any corrections) is always kept and used in
init_vf() when a new backlog period begins (using cl_cvtoff).

Is cumulative value safe ? Generally yes, though corner cases are easy
to create. For example consider:

1gbit interface
some 100kbit leaf, everything else idle

With current tick (64ns) 1s is 15625000 ticks, but the leaf is alone and
it's virtual time, so in reality it's 10000 times more. ITOW 38 bits are
needed to hold 1 second. 54 - 1 day, 59 - 1 month, 63 - 1 year (all
logarithms rounded up). It's getting somewhat dangerous, but also
requires setup excusing this kind of values not mentioning permanently
backlogged class for a year. In near most extreme case (10gbit, 10kbit
leaf), we have "enough" to hold ~13.6 days in 64 bits.

Well, the issue remains mostly theoretical and cl_cvtoff has been
working fine for all those years. Sensible configuration are de-facto
immune to this issue, and not so sensible can solve it with a cronjob
and its period inversely proportional to the insanity of such setup =)

Now let's explain the subtle bug mentioned earlier.

The issue is related to how offsets are kept and how we calculate
virtual times and update fair service curve(s). The issue itself is
subtle, but easy to observe with long m1 segments. It was introduced in
rather old patch:

Commit 99296150c7: "[NET_SCHED]: O(1) children vtoff adjustment
in HFSC scheduler"

(available in git://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git)

Originally when a new backlog period was started, cl_vtoff of each
sibling was updated with cl_cvtmax from past period - naturally moving
all cl_vt to proper starting point. That patch adjusted it so cumulative
offset is kept in the parent, and there is no need for traversing the
list (as any subsequent child activation derives new vt from already
active sibling(s)).

But with this change, cl_vtoff (of each sibling) is no longer persistent
across the inactivity periods, as it's calculated from parent's
cl_cvtoff on a new backlog period, conflicting with the following curve
correction from the previous period:

if (cl->cl_virtual.x == vt) {
        cl->cl_virtual.x -= cl->cl_vtoff;
cl->cl_vtoff = 0;
}

This essentially tries to keep curve as if it was local to the period
and resets cl_vtoff (cumulative vt offset of the class) to 0 when
possible (read: when we have an intersection or if a new curve is below
the old one). But then it's recalculated from cl_cvtoff on next active
period.  Then rtsc_min() call preceding the above if() doesn't really
do what we expect it to do in such scenario - as it calculates the
minimum of corrected curve (from the previous backlog period) and the
new uncorrected curve (with offset derived from cl_cvtoff).

Example:

tc class add dev $ife parent 1:0 classid 1:1  hfsc ls m2 100mbit ul m2 100mbit
tc class add dev $ife parent 1:1 classid 1:10 hfsc ls m1 80mbit d 10s m2 20mbit
tc class add dev $ife parent 1:1 classid 1:11 hfsc ls m2 20mbit

start B, keep it backlogged, let it run 6s (30s worth of vt as A is idle)
pause B briefly to force cl_cvtoff update in parent (whole 1:1 going idle)
start A, let it run 10s
pause A briefly to force rtsc_min()

At this point we would expect A to continue at 20mbit after a brief
moment of 80mbit. But instead A will use 80mbit for full 10s again. It's
the effect of first correcting A (during 'start A'), and then - after
unpausing - calculating rtsc_min() from old corrected and new uncorrected
curve.

The patch fixes this bug and keepis vt and fsc in sync (virtual times
are cumulative, not local to the backlog period).

Signed-off-by: Michal Soltys <soltys@ziu.info>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Use DEFINE_SPINLOCK() for spinlock
Wei Yongjun [Tue, 2 Aug 2016 13:49:00 +0000 (13:49 +0000)]
qed: Use DEFINE_SPINLOCK() for spinlock

spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().

Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Acked-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/multicast: should not send source list records when have filter mode change
Hangbin Liu [Tue, 2 Aug 2016 10:02:57 +0000 (18:02 +0800)]
net/multicast: should not send source list records when have filter mode change

Based on RFC3376 5.1 and RFC3810 6.1

   If the per-interface listening change that triggers the new report is
   a filter mode change, then the next [Robustness Variable] State
   Change Reports will include a Filter Mode Change Record.  This
   applies even if any number of source list changes occur in that
   period.

   Old State         New State         State Change Record Sent
   ---------         ---------         ------------------------
   INCLUDE (A)       EXCLUDE (B)       TO_EX (B)
   EXCLUDE (A)       INCLUDE (B)       TO_IN (B)

So we should not send source-list change if there is a filter-mode change.

Here are two scenarios:
1. Group deleted and filter mode is EXCLUDE, which means we need send a
   TO_IN { }.
2. Not group deleted, but has pcm->crcount, which means we need send a
   normal filter-mode-change.

At the same time, if the type is ALLOW or BLOCK, and have psf->sf_crcount,
we stop add records and decrease sf_crcount directly

Reference: https://www.ietf.org/mail-archive/web/magma/current/msg01274.html

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: marvell: mvneta: use new api ethtool_{get|set}_link_ksettings
Philippe Reynes [Sat, 30 Jul 2016 15:42:12 +0000 (17:42 +0200)]
net: ethernet: marvell: mvneta: use new api ethtool_{get|set}_link_ksettings

The ethtool api {get|set}_settings is deprecated.
We move the mvneta driver to new api {get|set}_link_ksettings.

We use the generic function phy_ethtool_get_link_ksettings,
and update old mvneta_ethtool_set_settings to the new api.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: marvell: mvneta: use phydev from struct net_device
Philippe Reynes [Sat, 30 Jul 2016 15:42:11 +0000 (17:42 +0200)]
net: ethernet: marvell: mvneta: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phy_dev in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: greth: use phy_ethtool_{get|set}_link_ksettings
Philippe Reynes [Sat, 30 Jul 2016 14:22:06 +0000 (16:22 +0200)]
net: ethernet: greth: use phy_ethtool_{get|set}_link_ksettings

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: greth: use phydev from struct net_device
Philippe Reynes [Sat, 30 Jul 2016 14:22:05 +0000 (16:22 +0200)]
net: ethernet: greth: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phy in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: octeon: use phy_ethtool_{get|set}_link_ksettings
Philippe Reynes [Sat, 30 Jul 2016 14:14:44 +0000 (16:14 +0200)]
net: ethernet: octeon: use phy_ethtool_{get|set}_link_ksettings

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.

There was a check on CAP_NET_ADMIN in cvm_oct_set_settings, but this
check is already done in dev_ethtool, so no need to repeat it before
calling the generic function.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: octeon: use phydev from struct net_device
Philippe Reynes [Sat, 30 Jul 2016 14:14:43 +0000 (16:14 +0200)]
net: ethernet: octeon: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'bna-next'
David S. Miller [Mon, 8 Aug 2016 22:41:28 +0000 (15:41 -0700)]
Merge branch 'bna-next'

Ivan Vecera says:

====================
bna: remove useless global variables

The set removes useless global bnad_list as well as bnad->entry that track
a list of driver instances but it is not used anywhere. The associated
bnad_list_mutex is removed as well but as it is also used to protect
bna_id increment it is necessary to convert bna_id to atomic_t.
====================

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
8 years agobna: remove global bnad_list_mutex
Ivan Vecera [Fri, 29 Jul 2016 17:52:58 +0000 (19:52 +0200)]
bna: remove global bnad_list_mutex

Remove global bnad_list_mutex as it is not used anymore. This makes
bnad_add_to_list() and bnad_remove_from_list() empty so remove them too.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobna: change type of bna_id to atomic_t
Ivan Vecera [Fri, 29 Jul 2016 17:52:57 +0000 (19:52 +0200)]
bna: change type of bna_id to atomic_t

Change type of bna_id to atomic_t. The bnad_list_mutex is used to prevent
a race when bna_id is incremented. After the change the mutex can be
removed in the next step.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobna: remove useless linked list
Ivan Vecera [Fri, 29 Jul 2016 17:52:56 +0000 (19:52 +0200)]
bna: remove useless linked list

Remove global variable bnad_list and bnad->list_entry that are used
as list of bna driver instances. It is not necessary and useless.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'ipconfig-improve-dhcp-timeouts'
David S. Miller [Mon, 8 Aug 2016 22:40:06 +0000 (15:40 -0700)]
Merge branch 'ipconfig-improve-dhcp-timeouts'

Uwe Kleine-König says:

====================
net: ipconfig: improve DHCP timeout handling

this series teaches the ipconfig code to handle a DHCP reply on eth0 even if a
request on eth1 was already sent out.
This is a follow fix to 2513dfb83fc7 ("ipconfig: handle case of delayed DHCP
server") that dropped a late reply.

This makes it possible at all to work with slow DHCP servers at all in some
configurations and improves boot speed in general.

The first patch is not really necessary, it only helps decoding debug messages
when there is more than one device.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ipconfig: drop inter-device timeout
Uwe Kleine-König [Fri, 29 Jul 2016 09:30:39 +0000 (11:30 +0200)]
net: ipconfig: drop inter-device timeout

Now that ipconfig learned to handle "delayed replies" in the previous
commit, there is no reason any more to delay sending a first request per
device.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ipconfig: Support using "delayed" DHCP replies
Uwe Kleine-König [Fri, 29 Jul 2016 09:30:38 +0000 (11:30 +0200)]
net: ipconfig: Support using "delayed" DHCP replies

The dhcp code only waits 1s between sending DHCP requests on different
devices and only accepts an answer for the device that sent out the last
request. Only the timeout at the end of a loop is increased iteratively
which favours only the last device. This makes it impossible to work
with a dhcp server that takes little more than 1s connected to a device
that is not the last one.

Instead of also increasing the inter-device timeout, teach the code to
handle delayed replies.

To accomplish that, make *ic_dev track the current ic_device instead of
the current net_device and adapt all users accordingly. The relevant
change then is to reset d to ic_dev on a reply to assert that the
followup request goes through the right device.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ipconfig: Add device name to debug messages
Uwe Kleine-König [Fri, 29 Jul 2016 09:30:37 +0000 (11:30 +0200)]
net: ipconfig: Add device name to debug messages

This simplifies understanding what happens when there is more than one
device.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'be2net-next'
David S. Miller [Mon, 8 Aug 2016 22:38:27 +0000 (15:38 -0700)]
Merge branch 'be2net-next'

Sathya Perla says:

====================
be2net: patch set

Patch 1 fixes the driver to workaournd a bug in the Lancer FW in the
vlan-config cmd processing. The FW in some cases clears the vlan-promisc
setting even if it cannot apply the vlan filter. The driver has no means
of knowing if the vlan-promisc setting has been cleared or not. This
patch now explicitly clears the vlan-promisc setting via the RX-Filter cmd
and then tries to program the vlan-list.

Patch 2 fixes the failure path in the vlan vid add code.
The driver currently removes a new vid from the adapter->vids[] array if
be_vid_config() returns an error, which occurs when there is an error in
HW/FW. This is wrong. After the HW/FW error is recovered from, we need the
complete vids[] array to re-program the vlan list.

Patch 3 fixes the ndo_set_rx_mode() path to avoid unnecessary multicast
list updates to the FW. Each time the ndo_set_rx_mode() routine is called,
the driver programs the multicast list in the adapter without checking
if there are any changes to the list. This leads to a flood of RX_FILTER
cmds when a number of vlan interfaces are configured over the device,
as the ndo_ gets called for each vlan interface. To avoid this, we now
use __dev_mc_sync() and __dev_uc_sync() API, but only to detect if there
is a change in the mc/uc lists. Now that we use this API, the code has to
be-designed to issue these API calls for each invocation of the ndo_ call.

Patch 4 replaces polling with sleeping in the FW completion path.
The ndo_set_rx_mode() and ndo_add/del_vxlan_port() calls may be called with
BHs disabled. The driver currently issues the required cmds to the FW in
these contexts and polls on completions from the FW, while BHs remain
disabled.  This can cause either packet loss or packet reception to be
delayed on that CPU.  This patch defers processing of the above cmds to a
separate workqueue. With this change, FW cmds are now issued only in process
context. Now that the FW cmds are issued only in process context, they can
sleep waiting for a completion instead of polling.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobe2net: replace polling with sleeping in the FW completion path
Sathya Perla [Wed, 27 Jul 2016 09:26:18 +0000 (05:26 -0400)]
be2net: replace polling with sleeping in the FW completion path

The ndo_set_rx_mode() and ndo_add/del_vxlan_port() calls may be called with
BHs disabled. The driver currently issues the required cmds to the FW in
these contexts and polls on completions from the FW, while BHs remain
disabled.  This can cause either packet loss or packet reception to be
delayed on that CPU.

This patch defers processing of the above cmds to a separate workqueue.
With this change, FW cmds are now issued only in process context.
Now that the FW cmds are issued only in process context, they can sleep
waiting for a completion instead of polling. All the spin_lock_bh(mcc_lock)
calls are now replaced with mutex calls.

Also a new rx_filter_lock is now needed to protect the RX filtering fields
like vids[] between be_vlan_add/rem_vid() and __be_set_rx_mode() contexts.

Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobe2net: Avoid unnecessary firmware updates of multicast list
Sriharsha Basavapatna [Wed, 27 Jul 2016 09:26:17 +0000 (05:26 -0400)]
be2net: Avoid unnecessary firmware updates of multicast list

Eachtime the ndo_set_rx_mode() routine is called, the driver programs the
multicast list in the adapter without checking if there are any changes to
the list. This leads to a flood of RX_FILTER cmds when a number of vlan
interfaces are configured over the device, as the ndo_ gets
called for each vlan interface. To avoid this, we now use __dev_mc_sync()
and __dev_uc_sync() API, but only to detect if there is a change in the
mc/uc lists. Now that we use this API, the code has to be-designed to
issue these API calls for each invocation of the be_set_rx_mode() call.

Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobe2net: do not remove vids from driver table if be_vid_config() fails.
Sathya Perla [Wed, 27 Jul 2016 09:26:16 +0000 (05:26 -0400)]
be2net: do not remove vids from driver table if be_vid_config() fails.

The driver currently removes a new vid from the adapter->vids[] array if
be_vid_config() returns an error, which occurs when there is an error in
HW/FW. This is wrong. After the HW/FW error is recovered from, we need the
complete vids[] array to re-program the vlan list.

Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobe2net: clear vlan-promisc setting before programming the vlan list
Somnath Kotur [Wed, 27 Jul 2016 09:26:15 +0000 (05:26 -0400)]
be2net: clear vlan-promisc setting before programming the vlan list

The Lancer FW has a bug due to which in some cases vlan-promisc setting
is cleared eventhough the vlan-list programming did not succeed (via
VLAN_CONFIG) cmd. The driver has no way of knowing if the vlan-promisc
mode was cleared or not when this cmd fails. To work around this issue,
this patch first explicitly clears the vlan-promisc mode via RX_FILTER
cmd and then tries to program the vlan list.
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoneigh: allow admin to set NUD_STALE
Julian Anastasov [Wed, 27 Jul 2016 06:56:50 +0000 (09:56 +0300)]
neigh: allow admin to set NUD_STALE

Admin should be able to set any state. Currently, this fails
when lladdr is not changed and state is changed from
NUD_CONNECTED to NUD_STALE:

ip neigh add 192.168.8.1 lladdr 00:11:22:33:44:55 nud perm dev wlan0
ip neigh show to 192.168.8.1
192.168.8.1 dev wlan0 lladdr 00:11:22:33:44:55 PERMANENT
ip neigh change 192.168.8.1 lladdr 00:11:22:33:44:55 nud stale dev wlan0
ip neigh show to 192.168.8.1
192.168.8.1 dev wlan0 lladdr 00:11:22:33:44:55 PERMANENT

Problem may be from 2.1.X days.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Reviewed-by: Chunhui He <hchunhui@mail.ustc.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosctp: use event->chunk when it's valid
Xin Long [Sun, 7 Aug 2016 06:15:13 +0000 (14:15 +0800)]
sctp: use event->chunk when it's valid

Commit 52253db924d1 ("sctp: also point GSO head_skb to the sk when
it's available") used event->chunk->head_skb to get the head_skb in
sctp_ulpevent_set_owner().

But at that moment, the event->chunk was NULL, as it cloned the skb
in sctp_ulpevent_make_rcvmsg(). Therefore, that patch didn't really
work.

This patch is to move the event->chunk initialization before calling
sctp_ulpevent_receive_data() so that it uses event->chunk when it's
valid.

Fixes: 52253db924d1 ("sctp: also point GSO head_skb to the sk when it's available")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: vxlan: lwt: Fix vxlan local traffic.
pravin shelar [Sat, 6 Aug 2016 00:45:37 +0000 (17:45 -0700)]
net: vxlan: lwt: Fix vxlan local traffic.

vxlan driver has bypass for local vxlan traffic, but that
depends on information about all VNIs on local system in
vxlan driver. This is not available in case of LWT.
Therefore following patch disable encap bypass for LWT
vxlan traffic.

Fixes: ee122c79d42 ("vxlan: Flow based tunneling").
Reported-by: Jakub Libosvar <jlibosva@redhat.com>
Signed-off-by: Pravin B Shelar <pshelar@ovn.org>
Acked-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: vxlan: lwt: Use source ip address during route lookup.
pravin shelar [Sat, 6 Aug 2016 00:45:36 +0000 (17:45 -0700)]
net: vxlan: lwt: Use source ip address during route lookup.

LWT user can specify destination as well as source ip address
for given tunnel endpoint. But vxlan is ignoring given source
ip address. Following patch uses both ip address to route the
tunnel packet. This consistent with other LWT implementations,
like GENEVE and GRE.

Fixes: ee122c79d42 ("vxlan: Flow based tunneling").
Signed-off-by: Pravin B Shelar <pshelar@ovn.org>
Acked-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'bpf-csum-complete'
David S. Miller [Mon, 8 Aug 2016 20:11:44 +0000 (13:11 -0700)]
Merge branch 'bpf-csum-complete'

Daniel Borkmann says:

====================
Few BPF helper related checksum fixes

The set contains three fixes with regards to CHECKSUM_COMPLETE
and BPF helper functions. For details please see individual
patches.

Thanks!

v1 -> v2:
  - Fixed make htmldocs issue reported by kbuild bot.
  - Rest as is.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: fix checksum for vlan push/pop helper
Daniel Borkmann [Thu, 4 Aug 2016 22:11:13 +0000 (00:11 +0200)]
bpf: fix checksum for vlan push/pop helper

When having skbs on ingress with CHECKSUM_COMPLETE, tc BPF programs don't
push rcsum of mac header back in and after BPF run back pull out again as
opposed to some other subsystems (ovs, for example).

For cases like q-in-q, meaning when a vlan tag for offloading is already
present and we're about to push another one, then skb_vlan_push() pushes the
inner one into the skb, increasing mac header and skb_postpush_rcsum()'ing
the 4 bytes vlan header diff. Likewise, for the reverse operation in
skb_vlan_pop() for the case where vlan header needs to be pulled out of the
skb, we're decreasing the mac header and skb_postpull_rcsum()'ing the 4 bytes
rcsum of the vlan header that was removed.

However mangling the rcsum here will lead to hw csum failure for BPF case,
since we're pulling or pushing data that was not part of the current rcsum.
Changing tc BPF programs in general to push/pull rcsum around BPF_PROG_RUN()
is also not really an option since current behaviour is ABI by now, but apart
from that would also mean to do quite a bit of useless work in the sense that
usually 12 bytes need to be rcsum pushed/pulled also when we don't need to
touch this vlan related corner case. One way to fix it would be to push the
necessary rcsum fixup down into vlan helpers that are (mostly) slow-path
anyway.

Fixes: 4e10df9a60d9 ("bpf: introduce bpf_skb_vlan_push/pop() helpers")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: fix checksum fixups on bpf_skb_store_bytes
Daniel Borkmann [Thu, 4 Aug 2016 22:11:12 +0000 (00:11 +0200)]
bpf: fix checksum fixups on bpf_skb_store_bytes

bpf_skb_store_bytes() invocations above L2 header need BPF_F_RECOMPUTE_CSUM
flag for updates, so that CHECKSUM_COMPLETE will be fixed up along the way.
Where we ran into an issue with bpf_skb_store_bytes() is when we did a
single-byte update on the IPv6 hoplimit despite using BPF_F_RECOMPUTE_CSUM
flag; simple ping via ICMPv6 triggered a hw csum failure as a result. The
underlying issue has been tracked down to a buffer alignment issue.

Meaning, that csum_partial() computations via skb_postpull_rcsum() and
skb_postpush_rcsum() pair invoked had a wrong result since they operated on
an odd address for the hoplimit, while other computations were done on an
even address. This mix doesn't work as-is with skb_postpull_rcsum(),
skb_postpush_rcsum() pair as it always expects at least half-word alignment
of input buffers, which is normally the case. Thus, instead of these helpers
using csum_sub() and (implicitly) csum_add(), we need to use csum_block_sub(),
csum_block_add(), respectively. For unaligned offsets, they rotate the sum
to align it to a half-word boundary again, otherwise they work the same as
csum_sub() and csum_add().

Adding __skb_postpull_rcsum(), __skb_postpush_rcsum() variants that take the
offset as an input and adapting bpf_skb_store_bytes() to them fixes the hw
csum failures again. The skb_postpull_rcsum(), skb_postpush_rcsum() helpers
use a 0 constant for offset so that the compiler optimizes the offset & 1
test away and generates the same code as with csum_sub()/_add().

Fixes: 608cd71a9c7c ("tc: bpf: generalize pedit action")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: also call skb_postpush_rcsum on xmit occasions
Daniel Borkmann [Thu, 4 Aug 2016 22:11:11 +0000 (00:11 +0200)]
bpf: also call skb_postpush_rcsum on xmit occasions

Follow-up to commit f8ffad69c9f8 ("bpf: add skb_postpush_rcsum and fix
dev_forward_skb occasions") to fix an issue for dev_queue_xmit() redirect
locations which need CHECKSUM_COMPLETE fixups on ingress.

For the same reasons as described in f8ffad69c9f8 already, we of course
also need this here, since dev_queue_xmit() on a veth device will let us
end up in the dev_forward_skb() helper again to cross namespaces.

Latter then calls into skb_postpull_rcsum() to pull out L2 header, so
that netif_rx_internal() sees CHECKSUM_COMPLETE as it is expected. That
is, CHECKSUM_COMPLETE on ingress covering L2 _payload_, not L2 headers.

Also here we have to address bpf_redirect() and bpf_clone_redirect().

Fixes: 3896d655f4d4 ("bpf: introduce bpf_clone_redirect() helper")
Fixes: 27b29f63058d ("bpf: add bpf_redirect() helper")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/ethernet: tundra: fix dump_eth_one warning in tsi108_eth
Paul Gortmaker [Thu, 4 Aug 2016 20:07:58 +0000 (16:07 -0400)]
net/ethernet: tundra: fix dump_eth_one warning in tsi108_eth

The call site for this function appears as:

  #ifdef DEBUG
        data->msg_enable = DEBUG;
        dump_eth_one(dev);
  #endif

...leading to the following warning for !DEBUG builds:

drivers/net/ethernet/tundra/tsi108_eth.c:169:13: warning: 'dump_eth_one' defined but not used [-Wunused-function]
 static void dump_eth_one(struct net_device *dev)
             ^

...when using the arch/powerpc/configs/mpc7448_hpc2_defconfig

Put the function definition under the same #ifdef as the call site
to avoid the warning.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'mlxsw-dcb-fixes'
David S. Miller [Mon, 8 Aug 2016 19:57:28 +0000 (12:57 -0700)]
Merge branch 'mlxsw-dcb-fixes'

Ido Schimmel says:

====================
mlxsw: DCB fixes

Patches 1 and 2 fix a problem in which PAUSE frames settings are wrongly
overridden when ieee_setpfc() gets called.

Patch 3 adds a missing rollback in port's creation error path.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: spectrum: Add missing DCB rollback in error path
Ido Schimmel [Thu, 4 Aug 2016 14:36:22 +0000 (17:36 +0300)]
mlxsw: spectrum: Add missing DCB rollback in error path

We correctly execute mlxsw_sp_port_dcb_fini() when port is removed, but
I missed its rollback in the error path of port creation, so add it.

Fixes: f00817df2b42 ("mlxsw: spectrum: Introduce support for Data Center Bridging (DCB)")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: spectrum: Do not override PAUSE settings
Ido Schimmel [Thu, 4 Aug 2016 14:36:21 +0000 (17:36 +0300)]
mlxsw: spectrum: Do not override PAUSE settings

The PFCC register is used to configure both PAUSE and PFC frames.
Therefore, when PFC frames are disabled we must make sure we don't
mistakenly also disable PAUSE frames (which might be enabled).

Fix this by packing the PFCC register with the current PAUSE settings.

Note that this register is also accessed via ethtool ops, but there we
are guaranteed to have PFC disabled.

Fixes: d81a6bdb87ce ("mlxsw: spectrum: Add IEEE 802.1Qbb PFC support")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: spectrum: Do not assume PAUSE frames are disabled
Ido Schimmel [Thu, 4 Aug 2016 14:36:20 +0000 (17:36 +0300)]
mlxsw: spectrum: Do not assume PAUSE frames are disabled

When ieee_setpfc() gets called, PAUSE frames are not necessarily
disabled on the port.

Check if PAUSE frames are disabled or enabled and configure the port's
headroom buffer accordingly.

Fixes: d81a6bdb87ce ("mlxsw: spectrum: Add IEEE 802.1Qbb PFC support")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agorhashtable-test: Fix max_size parameter description
Phil Sutter [Thu, 4 Aug 2016 10:37:17 +0000 (12:37 +0200)]
rhashtable-test: Fix max_size parameter description

Looks like a simple copy'n'paste error.

Fixes: 1aa661f5c3df1 ("rhashtable-test: Measure time to insert, remove & traverse entries")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'sctp_diag-fixes'
David S. Miller [Mon, 8 Aug 2016 19:51:59 +0000 (12:51 -0700)]
Merge branch 'sctp_diag-fixes'

Phil Sutter says:

====================
sctp_diag: A bunch of fixes for upcoming 'ss' support

The following series contains a number of fixes necessary to make my yet
unpublished 'ss' support patch functional.

Changes since v1:
- Fixed patch 2/3
- Rebased whole series onto current net-next/master

Changes since v2:
- Improved description of patch 2/3
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosctp_diag: Respect ss adding TCPF_CLOSE to idiag_states
Phil Sutter [Thu, 4 Aug 2016 10:11:57 +0000 (12:11 +0200)]
sctp_diag: Respect ss adding TCPF_CLOSE to idiag_states

Since 'ss' always adds TCPF_CLOSE to idiag_states flags, sctp_diag can't
rely upon TCPF_LISTEN flag solely being present when listening sockets
are requested.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosctp_diag: Fix T3_rtx timer export
Phil Sutter [Thu, 4 Aug 2016 10:11:56 +0000 (12:11 +0200)]
sctp_diag: Fix T3_rtx timer export

The asoc's timer value is not kept in asoc->timeouts array but in it's
primary transport instead.

Furthermore, we must export the timer only if it is pending, otherwise
the value will underrun when stored in an unsigned variable and
user space will only see a very large timeout value.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosctp: Export struct sctp_info to userspace
Phil Sutter [Thu, 4 Aug 2016 10:11:55 +0000 (12:11 +0200)]
sctp: Export struct sctp_info to userspace

This is required to correctly interpret INET_DIAG_INFO messages exported
by sctp_diag module.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: macb: Correct CAPS mask
Harini Katakam [Fri, 5 Aug 2016 05:01:58 +0000 (10:31 +0530)]
net: macb: Correct CAPS mask

USRIO and JUMBO CAPS have the same mask.
Fix the same.

Fixes: ce721a702197 ("net: ethernet: cadence-macb: Add disabled usrio caps")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Harini Katakam <harinik@xilinx.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'mac80211-for-davem-2016-08-05' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Sun, 7 Aug 2016 00:52:00 +0000 (20:52 -0400)]
Merge tag 'mac80211-for-davem-2016-08-05' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
First set of fixes for the current cycle:
 * fix 80+80 bandwidth warning
 * fix powersave with mac80211 TXQ implementation
 * use correct way to free SKBs from multicast buffering
 * mesh: fix operation ordering to work with all drivers
 * mesh: end service period even when peer goes away
 * mesh: correct HT opmode validity checks
 * pass hw pointer from mac80211 to driver in TPT method,
   fixing a bug (in a bit the wrong way, but that's what
   we have right now)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosamples/bpf: add bpf_map_update_elem() tests
Alexei Starovoitov [Fri, 5 Aug 2016 21:01:28 +0000 (14:01 -0700)]
samples/bpf: add bpf_map_update_elem() tests

increase test coverage to check previously missing 'update when full'

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: restore behavior of bpf_map_update_elem
Alexei Starovoitov [Fri, 5 Aug 2016 21:01:27 +0000 (14:01 -0700)]
bpf: restore behavior of bpf_map_update_elem

The introduction of pre-allocated hash elements inadvertently broke
the behavior of bpf hash maps where users expected to call
bpf_map_update_elem() without considering that the map can be full.
Some programs do:
old_value = bpf_map_lookup_elem(map, key);
if (old_value) {
  ... prepare new_value on stack ...
  bpf_map_update_elem(map, key, new_value);
}
Before pre-alloc the update() for existing element would work even
in 'map full' condition. Restore this behavior.

The above program could have updated old_value in place instead of
update() which would be faster and most programs use that approach,
but sometimes the values are large and the programs use update()
helper to do atomic replacement of the element.
Note we cannot simply update element's value in-place like percpu
hash map does and have to allocate extra num_possible_cpu elements
and use this extra reserve when the map is full.

Fixes: 6c9059817432 ("bpf: pre-allocate hash map elements")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dsa: b53: Add missing ULL suffix for 64-bit constant
Geert Uytterhoeven [Wed, 3 Aug 2016 19:42:18 +0000 (21:42 +0200)]
net: dsa: b53: Add missing ULL suffix for 64-bit constant

On 32-bit (e.g. with m68k-linux-gnu-gcc-4.1):

    drivers/net/dsa/b53/b53_common.c: In function ‘b53_arl_read’:
    drivers/net/dsa/b53/b53_common.c:1072: warning: integer constant is too large for ‘long’ type

Fixes: 1da6df85c6fbed8f ("net: dsa: b53: Implement ARL add/del/dump operations")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipv4: panic in leaf_walk_rcu due to stale node pointer
David Forster [Wed, 3 Aug 2016 14:13:01 +0000 (15:13 +0100)]
ipv4: panic in leaf_walk_rcu due to stale node pointer

Panic occurs when issuing "cat /proc/net/route" whilst
populating FIB with > 1M routes.

Use of cached node pointer in fib_route_get_idx is unsafe.

 BUG: unable to handle kernel paging request at ffffc90001630024
 IP: [<ffffffff814cf6a0>] leaf_walk_rcu+0x10/0xe0
 PGD 11b08d067 PUD 11b08e067 PMD dac4b067 PTE 0
 Oops: 0000 [#1] SMP
 Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl nfs lockd grace fscac
 snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep virti
 acpi_cpufreq button parport_pc ppdev lp parport autofs4 ext4 crc16 mbcache jbd
tio_ring virtio floppy uhci_hcd ehci_hcd usbcore usb_common libata scsi_mod
 CPU: 1 PID: 785 Comm: cat Not tainted 4.2.0-rc8+ #4
 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
 task: ffff8800da1c0bc0 ti: ffff88011a05c000 task.ti: ffff88011a05c000
 RIP: 0010:[<ffffffff814cf6a0>]  [<ffffffff814cf6a0>] leaf_walk_rcu+0x10/0xe0
 RSP: 0018:ffff88011a05fda0  EFLAGS: 00010202
 RAX: ffff8800d8a40c00 RBX: ffff8800da4af940 RCX: ffff88011a05ff20
 RDX: ffffc90001630020 RSI: 0000000001013531 RDI: ffff8800da4af950
 RBP: 0000000000000000 R08: ffff8800da1f9a00 R09: 0000000000000000
 R10: ffff8800db45b7e4 R11: 0000000000000246 R12: ffff8800da4af950
 R13: ffff8800d97a74c0 R14: 0000000000000000 R15: ffff8800d97a7480
 FS:  00007fd3970e0700(0000) GS:ffff88011fd00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
 CR2: ffffc90001630024 CR3: 000000011a7e4000 CR4: 00000000000006e0
 Stack:
  ffffffff814d00d3 0000000000000000 ffff88011a05ff20 ffff8800da1f9a00
  ffffffff811dd8b9 0000000000000800 0000000000020000 00007fd396f35000
  ffffffff811f8714 0000000000003431 ffffffff8138dce0 0000000000000f80
 Call Trace:
  [<ffffffff814d00d3>] ? fib_route_seq_start+0x93/0xc0
  [<ffffffff811dd8b9>] ? seq_read+0x149/0x380
  [<ffffffff811f8714>] ? fsnotify+0x3b4/0x500
  [<ffffffff8138dce0>] ? process_echoes+0x70/0x70
  [<ffffffff8121cfa7>] ? proc_reg_read+0x47/0x70
  [<ffffffff811bb823>] ? __vfs_read+0x23/0xd0
  [<ffffffff811bbd42>] ? rw_verify_area+0x52/0xf0
  [<ffffffff811bbe61>] ? vfs_read+0x81/0x120
  [<ffffffff811bcbc2>] ? SyS_read+0x42/0xa0
  [<ffffffff81549ab2>] ? entry_SYSCALL_64_fastpath+0x16/0x75
 Code: 48 85 c0 75 d8 f3 c3 31 c0 c3 f3 c3 66 66 66 66 66 66 2e 0f 1f 84 00 00
a 04 89 f0 33 02 44 89 c9 48 d3 e8 0f b6 4a 05 49 89
 RIP  [<ffffffff814cf6a0>] leaf_walk_rcu+0x10/0xe0
  RSP <ffff88011a05fda0>
 CR2: ffffc90001630024

Signed-off-by: Dave Forster <dforster@brocade.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agorxrpc: Fix races between skb free, ACK generation and replying
David Howells [Wed, 3 Aug 2016 13:11:40 +0000 (14:11 +0100)]
rxrpc: Fix races between skb free, ACK generation and replying

Inside the kafs filesystem it is possible to occasionally have a call
processed and terminated before we've had a chance to check whether we need
to clean up the rx queue for that call because afs_send_simple_reply() ends
the call when it is done, but this is done in a workqueue item that might
happen to run to completion before afs_deliver_to_call() completes.

Further, it is possible for rxrpc_kernel_send_data() to be called to send a
reply before the last request-phase data skb is released.  The rxrpc skb
destructor is where the ACK processing is done and the call state is
advanced upon release of the last skb.  ACK generation is also deferred to
a work item because it's possible that the skb destructor is not called in
a context where kernel_sendmsg() can be invoked.

To this end, the following changes are made:

 (1) kernel_rxrpc_data_consumed() is added.  This should be called whenever
     an skb is emptied so as to crank the ACK and call states.  This does
     not release the skb, however.  kernel_rxrpc_free_skb() must now be
     called to achieve that.  These together replace
     rxrpc_kernel_data_delivered().

 (2) kernel_rxrpc_data_consumed() is wrapped by afs_data_consumed().

     This makes afs_deliver_to_call() easier to work as the skb can simply
     be discarded unconditionally here without trying to work out what the
     return value of the ->deliver() function means.

     The ->deliver() functions can, via afs_data_complete(),
     afs_transfer_reply() and afs_extract_data() mark that an skb has been
     consumed (thereby cranking the state) without the need to
     conditionally free the skb to make sure the state is correct on an
     incoming call for when the call processor tries to send the reply.

 (3) rxrpc_recvmsg() now has to call kernel_rxrpc_data_consumed() when it
     has finished with a packet and MSG_PEEK isn't set.

 (4) rxrpc_packet_destructor() no longer calls rxrpc_hard_ACK_data().

     Because of this, we no longer need to clear the destructor and put the
     call before we free the skb in cases where we don't want the ACK/call
     state to be cranked.

 (5) The ->deliver() call-type callbacks are made to return -EAGAIN rather
     than 0 if they expect more data (afs_extract_data() returns -EAGAIN to
     the delivery function already), and the caller is now responsible for
     producing an abort if that was the last packet.

 (6) There are many bits of unmarshalling code where:

  ret = afs_extract_data(call, skb, last, ...);
switch (ret) {
case 0: break;
case -EAGAIN: return 0;
default: return ret;
}

     is to be found.  As -EAGAIN can now be passed back to the caller, we
     now just return if ret < 0:

  ret = afs_extract_data(call, skb, last, ...);
if (ret < 0)
return ret;

 (7) Checks for trailing data and empty final data packets has been
     consolidated as afs_data_complete().  So:

if (skb->len > 0)
return -EBADMSG;
if (!last)
return 0;

     becomes:

ret = afs_data_complete(call, skb, last);
if (ret < 0)
return ret;

 (8) afs_transfer_reply() now checks the amount of data it has against the
     amount of data desired and the amount of data in the skb and returns
     an error to induce an abort if we don't get exactly what we want.

Without these changes, the following oops can occasionally be observed,
particularly if some printks are inserted into the delivery path:

general protection fault: 0000 [#1] SMP
Modules linked in: kafs(E) af_rxrpc(E) [last unloaded: af_rxrpc]
CPU: 0 PID: 1305 Comm: kworker/u8:3 Tainted: G            E   4.7.0-fsdevel+ #1303
Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014
Workqueue: kafsd afs_async_workfn [kafs]
task: ffff88040be041c0 ti: ffff88040c070000 task.ti: ffff88040c070000
RIP: 0010:[<ffffffff8108fd3c>]  [<ffffffff8108fd3c>] __lock_acquire+0xcf/0x15a1
RSP: 0018:ffff88040c073bc0  EFLAGS: 00010002
RAX: 6b6b6b6b6b6b6b6b RBX: 0000000000000000 RCX: ffff88040d29a710
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88040d29a710
RBP: ffff88040c073c70 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88040be041c0 R15: ffffffff814c928f
FS:  0000000000000000(0000) GS:ffff88041fa00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4595f4750 CR3: 0000000001c14000 CR4: 00000000001406f0
Stack:
 0000000000000006 000000000be04930 0000000000000000 ffff880400000000
 ffff880400000000 ffffffff8108f847 ffff88040be041c0 ffffffff81050446
 ffff8803fc08a920 ffff8803fc08a958 ffff88040be041c0 ffff88040c073c38
Call Trace:
 [<ffffffff8108f847>] ? mark_held_locks+0x5e/0x74
 [<ffffffff81050446>] ? __local_bh_enable_ip+0x9b/0xa1
 [<ffffffff8108f9ca>] ? trace_hardirqs_on_caller+0x16d/0x189
 [<ffffffff810915f4>] lock_acquire+0x122/0x1b6
 [<ffffffff810915f4>] ? lock_acquire+0x122/0x1b6
 [<ffffffff814c928f>] ? skb_dequeue+0x18/0x61
 [<ffffffff81609dbf>] _raw_spin_lock_irqsave+0x35/0x49
 [<ffffffff814c928f>] ? skb_dequeue+0x18/0x61
 [<ffffffff814c928f>] skb_dequeue+0x18/0x61
 [<ffffffffa009aa92>] afs_deliver_to_call+0x344/0x39d [kafs]
 [<ffffffffa009ab37>] afs_process_async_call+0x4c/0xd5 [kafs]
 [<ffffffffa0099e9c>] afs_async_workfn+0xe/0x10 [kafs]
 [<ffffffff81063a3a>] process_one_work+0x29d/0x57c
 [<ffffffff81064ac2>] worker_thread+0x24a/0x385
 [<ffffffff81064878>] ? rescuer_thread+0x2d0/0x2d0
 [<ffffffff810696f5>] kthread+0xf3/0xfb
 [<ffffffff8160a6ff>] ret_from_fork+0x1f/0x40
 [<ffffffff81069602>] ? kthread_create_on_node+0x1cf/0x1cf

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: arc_emac: add missing of_node_put() in arc_emac_probe()
Wei Yongjun [Wed, 3 Aug 2016 10:58:35 +0000 (10:58 +0000)]
net: arc_emac: add missing of_node_put() in arc_emac_probe()

commit a94efbd7cc45 ("ethernet: arc: emac_main: add missing of_node_put
after calling of_parse_phandle") added missing of_node_put after calling
of_parse_phandle, but missing the devm_ioremap_resource() error handling
case.

Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoOVS: Ignore negative headroom value
Ian Wienand [Wed, 3 Aug 2016 05:44:57 +0000 (15:44 +1000)]
OVS: Ignore negative headroom value

net_device->ndo_set_rx_headroom (introduced in
871b642adebe300be2e50aa5f65a418510f636ec) says

  "Setting a negtaive value reset the rx headroom
   to the default value".

It seems that the OVS implementation in
3a927bc7cf9d0fbe8f4a8189dd5f8440228f64e7 overlooked this and sets
dev->needed_headroom unconditionally.

This doesn't have an immediate effect, but can mess up later
LL_RESERVED_SPACE calculations, such as done in
net/ipv6/mcast.c:mld_newpack.  For reference, this issue was found
from a skb_panic raised there after the length calculations had given
the wrong result.

Note the other current users of this interface
(drivers/net/tun.c:tun_set_headroom and
drivers/net/veth.c:veth_set_rx_headroom) are both checking this
correctly thus need no modification.

Thanks to Ben for some pointers from the crash dumps!

Cc: Benjamin Poirier <bpoirier@suse.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1361414
Signed-off-by: Ian Wienand <iwienand@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomac80211: Add ieee80211_hw pointer to get_expected_throughput
Maxim Altshul [Thu, 4 Aug 2016 12:43:04 +0000 (15:43 +0300)]
mac80211: Add ieee80211_hw pointer to get_expected_throughput

The variable is added to allow the driver an easy access to
it's own hw->priv when the op is invoked.

This fixes a crash in wlcore because it was relying on a
station pointer that wasn't initialized yet. It's the wrong
way to fix the crash, but it solves the problem for now and
it does make sense to have the hw pointer here.

Signed-off-by: Maxim Altshul <maxim.altshul@ti.com>
[rewrite commit message, fix indentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agonl80211: correct checks for NL80211_MESHCONF_HT_OPMODE value
Masashi Honma [Wed, 3 Aug 2016 01:07:44 +0000 (10:07 +0900)]
nl80211: correct checks for NL80211_MESHCONF_HT_OPMODE value

Previously, NL80211_MESHCONF_HT_OPMODE validation rejected correct
flag combinations, e.g. IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED |
IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT.

Doing just a range-check allows setting flags that don't exist (0x8)
and invalid flag combinations.

Implements some checks based on IEEE 802.11 2012 8.4.2.59 "HT
Operation element".

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
[reword commit message, simplify a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: End the MPSP even if EOSP frame was not acked
Masashi Honma [Tue, 2 Aug 2016 08:16:57 +0000 (17:16 +0900)]
mac80211: End the MPSP even if EOSP frame was not acked

If QoS frame with EOSP (end of service period) subfield=1 sent by local
peer was not acked by remote peer, local peer did not end the MPSP. This
prevents local peer from going to DOZE state. And if the remote peer
goes away without closing connection, local peer continues AWAKE state
and wastes battery.

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: fix purging multicast PS buffer queue
Felix Fietkau [Tue, 2 Aug 2016 09:13:41 +0000 (11:13 +0200)]
mac80211: fix purging multicast PS buffer queue

The code currently assumes that buffered multicast PS frames don't have
a pending ACK frame for tx status reporting.
However, hostapd sends a broadcast deauth frame on teardown for which tx
status is requested. This can lead to the "Have pending ack frames"
warning on module reload.
Fix this by using ieee80211_free_txskb/ieee80211_purge_tx_queue.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agoMerge branch 'qlcnic-fixes'
David S. Miller [Wed, 3 Aug 2016 19:03:35 +0000 (12:03 -0700)]
Merge branch 'qlcnic-fixes'

Manish Chopra says:

====================
qlcnic: bug fixes

This series fixes a data structure corruption bug in
VF's async mailbox commands handling and an issue realted
to napi poll budget in the driver.

Please consider applying this series to "net"
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqlcnic: Update version to 5.3.65
Manish Chopra [Wed, 3 Aug 2016 08:02:04 +0000 (04:02 -0400)]
qlcnic: Update version to 5.3.65

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqlcnic: fix napi budget alteration
Manish Chopra [Wed, 3 Aug 2016 08:02:03 +0000 (04:02 -0400)]
qlcnic: fix napi budget alteration

Driver modifies the supplied NAPI budget in qlcnic_83xx_msix_tx_poll()
function. Instead, it should use the budget as it is.

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>