Consolidate various cookie checking and generation code to simplify
the fast open processing. The main goal is to reduce code duplication
in tcp_v4_conn_request() for IPv6 support.

Removes two experimental sysctl flags TFO_SERVER_ALWAYS and
TFO_SERVER_COOKIE_NOT_CHKD used primarily for developmental debugging
purposes.
Signed-off-by: NYuchung Cheng <ycheng@google.com>
Signed-off-by: NDaniel Lee <longinus00@gmail.com>
Signed-off-by: NJerry Chu <hkchu@google.com>
Signed-off-by: NEric Dumazet <edumazet@google.com>
Acked-by: NNeal Cardwell <ncardwell@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Move common TFO functions that will be used by both v4 and v6
to tcp_fastopen.c. Create a helper tcp_fastopen_queue_check().
Signed-off-by: NYuchung Cheng <ycheng@google.com>
Signed-off-by: NDaniel Lee <longinus00@gmail.com>
Signed-off-by: NJerry Chu <hkchu@google.com>
Signed-off-by: NEric Dumazet <edumazet@google.com>
Acked-by: NNeal Cardwell <ncardwell@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Bjørn Mork says:

====================
cdc_mbim: cleanups and new features

This series depends on commit 6b5eeb7f ("net: cdc_mbim: handle
unaccelerated VLAN tagged frames"), which is currently in "net" but
not yet in "net-next".

Patch 4 might have a minor context collision with the "cdc_ncm: add
buffer tuning and stats using ethtool" series I just posted for
review.  Please let me know if I should submit an adjusted version
in either direction.  These two series' are otherwise completely
independent of each other.

The major new feature here is in patch 1, which I hope will solve
some problems with the original design without changing the existing
API, optionally allowing IP session 0 to be treated like any other
MBIM session.

The rest are some minor cleanups and finally some documentation of
the current driver APIs, after this series has been applied.  I
started feeling a bit more mortal than usual lately, which probably
is healthy, and realized that I should put some of the stuff in my
head in a somewhat less volatile storage.

v2:

Fixed patch 1 so that it actually does what it claims to do. This time
it is even tested for functionality, and not just build tested...
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The NCM class match in the cdc_mbim driver is confusing and
cause unexpected behaviour. The USB core guarantees that a
USB interface is in altsetting 0 when probing starts. This
means that devices implementing a NCM 1.0 backwards
compatible MBIM function (a "NCM/MBIM function") always hit
the NCM entry in the cdc_mbim driver match table. Such
functions will never match any of the MBIM entries.

This causes unexpeced behaviour for cases where the NCM and
MBIM entries are differet, which is currently the case for
all except Ericsson devices.

Improve the probing of NCM/MBIM functions by looking up the
device again in the cdc_mbim match table after switching to
the MBIM identity.

The shared altsetting selection is updated to better
accommodate the new probing logic, returning the preferred
altsetting for the control interface instead of the data
interface. The control interface altsetting update is moved
to the cdc_mbim driver. It is never necessary to change the
control interface altsetting for NCM.

Cc: Greg Suarez <gsuarez@smithmicro.com>
Reported by: Yu-an Shih <yshih@nvidia.com>
Signed-off-by: NBjørn Mork <bjorn@mork.no>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

An initial attempt on describing some of the odd APIs
provided by this driver.

Cc: Greg Suarez <gsuarez@smithmicro.com>
Signed-off-by: NBjørn Mork <bjorn@mork.no>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

DSS VLANs are pseudo network interfaces representing arbitrary
data streams, and specifically not IP. Preventing spurious IP
packets can sometimes be a hassle. The kernel will for example
send an IPv6 Router Solicit when the interface is brought up
unless the user has been careful enough to disable IPv6 first.
Such packets forwared to a MBIM DSS session will look like
spurious noise to the device, and can cause it to log an error
or even malfunction.

Drop all IP packets on the designated DSS VLANs to prevent such
unwanted spurious transmissions.

Cc: Greg Suarez <gsuarez@smithmicro.com>
Reported-by: NArnaud Desmier <adesmier@sequans.com>
Signed-off-by: NBjørn Mork <bjorn@mork.no>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The cdc_mbim driver maps 802.1q VLANs to MBIM IP and DSS
sessions. MBIM IP session 0 is handled as an exception and
is mapped to untagged frames.

This patch adds optional support for remapping MBIM IP
session 0 to 802.1q VLAN ID 4094 instead. The default
behaviour is not changed. The new behaviour is triggered
by adding a link for this previously unsupported VLAN.

The untagged mapping was chosen initially to support the
assumed most common use case: Most current MBIM devices only
support a single IP session (i.e. session 0 only), and using
untagged frames lets the users completely ignore the
additonal complexity of the multiplexing layer.

But when the multiplexing features of MBIM are used, then
this netdev gets a double meaning: It becomes the master
interface for all the VLAN subdevs the additional sessions
are mapped to, while still serving as the untagged IP
interface for session 0.

This can be problematic, especially when using Device Service
Streams (DSS), as have become apparent recently with the
availability of devices with real DSS support. Some use cases
need to e.g set a MTU which is higher than allowed for IP
Session 0. The dual role also leads to the situation where
the IP Session 0 interface cannot be taken down without
breaking unrelated IP or DSS sessions - a devastating side
effect which applications managing a simple IP session cannot
be expected to be aware of. A typical DHCP client will assume
that it should bring the interface down after releasing the
IP lease.

These problems can be avoided by tagging IP session 0 packets
too, making this session similar to all other multiplexed
sessions. This redefines the main netdev as an upper master
interface only.

Cc: Greg Suarez <gsuarez@smithmicro.com>
Signed-off-by: NBjørn Mork <bjorn@mork.no>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net: get rid of SET_ETHTOOL_OPS

Dave Miller mentioned he'd like to see SET_ETHTOOL_OPS gone.
This does that.

Mostly done via coccinelle script:
@@
struct ethtool_ops *ops;
struct net_device *dev;
@@
-       SET_ETHTOOL_OPS(dev, ops);
+       dev->ethtool_ops = ops;

Compile tested only, but I'd seriously wonder if this broke anything.
Suggested-by: NDave Miller <davem@davemloft.net>
Signed-off-by: NWilfried Klaebe <w-lkml@lebenslange-mailadresse.de>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

sk_unattached_filter_create() will copy the filter's instructions so we
don't need to have the master copy hanging around after initialization.
Signed-off-by: NMathias Krause <minipli@googlemail.com>
Acked-by: NAlexei Starovoitov <ast@plumgrid.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix build when CONFIG_NET is not enabled.
Fixes these build errors:

WARNING: "sk_unattached_filter_destroy" [lib/test_bpf.ko] undefined!
WARNING: "kfree_skb" [lib/test_bpf.ko] undefined!
WARNING: "sk_unattached_filter_create" [lib/test_bpf.ko] undefined!
WARNING: "sk_run_filter_int_skb" [lib/test_bpf.ko] undefined!
WARNING: "__alloc_skb" [lib/test_bpf.ko] undefined!
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Acked-by: NAlexei Starovoitov <ast@plumgrid.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Do not collide with the x86-64 PTRACE user API namespace.

net/core/filter.c:57:0: warning: "R8" redefined [enabled by default]
arch/x86/include/uapi/asm/ptrace-abi.h:38:0: note: this is the location of the previous definition

Fix by adding a BPF_ prefix to the register macros.
Reported-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix build when BNX2X_SRIOV is not enabled.
Change one parameter struct from bnx2 to bnx2x and don't return a value
from a void function.

drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h:576:48: warning: 'struct bnx2' declared inside parameter list [enabled by default]
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h:576:48: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]

drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h:576:60: warning: 'return' with a value, in function returning void [enabled by default]
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Cc:	Ariel Elior <ariele@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Mugunthan V N says:

====================
Add DRA7xx and AM43xx platform support in cpsw-phy-sel driver

Adding DRA7xx and AM43xx platform support to cpsw-phy-sel driver to select
phy mode in control driver and fixing the uninitialized dev by initializing
to platform device structure pointer.

Changes from Initial version
* Added back the missing patch (1/3)
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

AM43xx phy mode selection is similar to AM33xx platform, so adding only
the compatibility string to the driver
Signed-off-by: NMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add dra7xx support for selecting the phy mode which is present in control
module of dra7xx SoC
Signed-off-by: NMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

priv->dev is uninitialized, initializing with pdev->dev
Signed-off-by: NMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When I use the following command, eth0 cannot send any packets.
 #tc qdisc add dev eth0 root handle 1: hhf limit 1

Because qlen need be smaller than limit, all packets were dropped.
Fix this by qlen *<=* limit.
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The __vlan_find_dev_deep should always called in RCU, according
David's suggestion, rename to __vlan_find_dev_deep_rcu looks more
reasonable.
Signed-off-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As suggested by several people, rename local_df to ignore_df,
since it means "ignore df bit if it is set".

Cc: Maciej Żenczykowski <maze@google.com>
Cc: Florian Westphal <fw@strlen.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
Acked-by: NMaciej Żenczykowski <maze@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Conflicts:
	drivers/net/ethernet/altera/altera_sgdma.c
	net/netlink/af_netlink.c
	net/sched/cls_api.c
	net/sched/sch_api.c

The netlink conflict dealt with moving to netlink_capable() and
netlink_ns_capable() in the 'net' tree vs. supporting 'tc' operations
in non-init namespaces.  These were simple transformations from
netlink_capable to netlink_ns_capable.

The Altera driver conflict was simply code removal overlapping some
void pointer cast cleanups in net-next.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Hariprasad Shenai says:

====================
Misc. fixes for cxgb4 and cxgb4vf driver

This series of patch provides fixes for cxgb4 and cxgb4vf driver related to
rx checksum counter and decodes module type a bit more for ethtool output.

The patches series is created against David Miller's 'net-next' tree.

We would like to request this patch series to get merged via David Miller's
'net-next' tree.

We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

the parameter rt will be assigned to c.arg in function fib6_clean_tree(),
but function fib6_prune_clone() doesn't use c.arg, so we can remove it
safely.
Signed-off-by: NDuan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This change ensures the driver can be built successfully without the
CONFIG_SYSFS flag.
MS-TFS: 182270
Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix kconfig warnings:

PTP_1588_CLOCK selects NET_PTP_CLASSIFY, which depends on NET,
so PTP_1588_CLOCK should also depend on NET.

PTP_1588_CLOCK_PCH selects PTP_1588_CLOCK so the former should
depend on NET.

warning: (IXP4XX_ETH && PTP_1588_CLOCK) selects NET_PTP_CLASSIFY which has unmet direct dependencies (NET)

warning: (SFC && TILE_NET && BFIN_MAC_USE_HWSTAMP && TIGON3 && FEC && E1000E && IGB && IXGBE && I40E && MLX4_EN && SXGBE_ETH && STMMAC_ETH && TI_CPTS && PTP_1588_CLOCK_GIANFAR && PTP_1588_CLOCK_IXP46X && DP83640_PHY && PTP_1588_CLOCK_PCH) selects PTP_1588_CLOCK which has unmet direct dependencies (NET)
[This warning is caused by the new 'depends on NET' in PTP_1588_CLOCK.]
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Acked-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Alexei Starovoitov says:

====================
BPF testsuite and cleanup

This patchset adds BPF testsuite and improves readability of classic
to internal BPF converter.

The testsuite helped to find 'negative offset bug' in x64 JIT that was
fixed by commit fdfaf64e ("x86: bpf_jit: support negative offsets")

It can be very useful for classic and internal JIT compiler developers.
Also it serves as performance benchmark.

x86_64/i386 pass all tests with and without JIT. arm32 JIT is failing
negative offset tests which are unsupported.

Internal BPF tests are much larger than classic tests to cover different
combinations of registers. Negative tests check correctness of classic
BPF verifier which must reject them.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

All tests should pass with and without JIT.

Example output:
test_bpf: #0 TAX 35 16 16 PASS
test_bpf: #1 TXA 7 7 7 PASS
test_bpf: #2 ADD_SUB_MUL_K 10 PASS
test_bpf: #3 DIV_KX 33 PASS
test_bpf: #4 AND_OR_LSH_K 10 10 PASS
test_bpf: #5 LD_IND 8 8 8 PASS
test_bpf: #6 LD_ABS 8 8 8 PASS
test_bpf: #7 LD_ABS_LL 13 14 PASS
test_bpf: #8 LD_IND_LL 12 12 12 PASS
test_bpf: #9 LD_ABS_NET 10 12 PASS
test_bpf: #10 LD_IND_NET 11 12 12 PASS
...

Numbers are times in nsec per filter for given input data.
Signed-off-by: NAlexei Starovoitov <ast@plumgrid.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The testsuite covers classic and internal BPF instructions.
It is particularly useful for JIT compiler developers.
Adds to "net" selftest target.

The testsuite can be used as a set of micro-benchmarks.
It measures execution time of each BPF program in nsec.

This patch adds core framework.
Signed-off-by: NAlexei Starovoitov <ast@plumgrid.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Introduce BPF helper macros to define instructions
(similar to old BPF_STMT/BPF_JUMP macros)

Use them while converting classic BPF to internal
and in BPF testsuite later.
Signed-off-by: NAlexei Starovoitov <ast@plumgrid.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

John W. Linville says:

====================
pull request: wireless 2014-05-08

This one is all from Johannes:

"Here are a few small fixes for the current cycle: radiotap TX flags were
wrong (fix by Bob), Chun-Yeow fixes an SMPS issue with mesh interfaces,
Eliad fixes a locking bug and a cfg80211 state problem and finally
Henning sent me a fix for IBSS rate information."

Please let me know if there are problems!
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Wang Weidong says:

====================
sctp: fix kfree static array pointer in sctp_sysctl_net_unregister

patch #1 revert the efb842c4("sctp: optimize the sctp_sysctl_net_register")
patch #2 add a checking for sctp_sysctl_net_register
====================
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When register_net_sysctl failed, we should free the
sysctl_table.
Signed-off-by: NWang Weidong <wangweidong1@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This revert commit efb842c4("sctp: optimize the sctp_sysctl_net_register"),
Since it doesn't kmemdup a sysctl_table for init_net, so the
init_net->sctp.sysctl_header->ctl_table_arg points to sctp_net_table
which is a static array pointer. So when doing sctp_sysctl_net_unregister,
it will free sctp_net_table, then we will get a NULL pointer dereference
like that:

[  262.948220] BUG: unable to handle kernel NULL pointer dereference at 000000000000006c
[  262.948232] IP: [<ffffffff81144b70>] kfree+0x80/0x420
[  262.948260] PGD db80a067 PUD dae12067 PMD 0
[  262.948268] Oops: 0000 [#1] SMP
[  262.948273] Modules linked in: sctp(-) crc32c_generic libcrc32c
...
[  262.948338] task: ffff8800db830190 ti: ffff8800dad00000 task.ti: ffff8800dad00000
[  262.948344] RIP: 0010:[<ffffffff81144b70>]  [<ffffffff81144b70>] kfree+0x80/0x420
[  262.948353] RSP: 0018:ffff8800dad01d88  EFLAGS: 00010046
[  262.948358] RAX: 0100000000000000 RBX: ffffffffa0227940 RCX: ffffea0000707888
[  262.948363] RDX: ffffea0000707888 RSI: 0000000000000001 RDI: ffffffffa0227940
[  262.948369] RBP: ffff8800dad01de8 R08: 0000000000000000 R09: ffff8800d9e983a9
[  262.948374] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffa0227940
[  262.948380] R13: ffffffff8187cfc0 R14: 0000000000000000 R15: ffffffff8187da10
[  262.948386] FS:  00007fa2a2658700(0000) GS:ffff880112800000(0000) knlGS:0000000000000000
[  262.948394] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  262.948400] CR2: 000000000000006c CR3: 00000000cddc0000 CR4: 00000000000006e0
[  262.948410] Stack:
[  262.948413]  ffff8800dad01da8 0000000000000286 0000000020227940 ffffffffa0227940
[  262.948422]  ffff8800dad01dd8 ffffffff811b7fa1 ffffffffa0227940 ffffffffa0227940
[  262.948431]  ffffffff8187d960 ffffffff8187cfc0 ffffffff8187d960 ffffffff8187da10
[  262.948440] Call Trace:
[  262.948457]  [<ffffffff811b7fa1>] ? unregister_sysctl_table+0x51/0xa0
[  262.948476]  [<ffffffffa020d1a1>] sctp_sysctl_net_unregister+0x21/0x30 [sctp]
[  262.948490]  [<ffffffffa020ef6d>] sctp_net_exit+0x12d/0x150 [sctp]
[  262.948512]  [<ffffffff81394f49>] ops_exit_list+0x39/0x60
[  262.948522]  [<ffffffff813951ed>] unregister_pernet_operations+0x3d/0x70
[  262.948530]  [<ffffffff81395292>] unregister_pernet_subsys+0x22/0x40
[  262.948544]  [<ffffffffa020efcc>] sctp_exit+0x3c/0x12d [sctp]
[  262.948562]  [<ffffffff810c5e04>] SyS_delete_module+0x194/0x210
[  262.948577]  [<ffffffff81240fde>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[  262.948587]  [<ffffffff815217a2>] system_call_fastpath+0x16/0x1b

With this revert, it won't occur the Oops.
Signed-off-by: NWang Weidong <wangweidong1@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

commit 6d48f44b "mdio_bus: implement devm_mdiobus_alloc/devm_mdiobus_free"
introduced a new function devm_mdiobus_alloc_size() but added an export
for a different function devm_mdiobus_alloc(), which was obviously
a simple mistake that leads to  build error whenever this function is
used from a loadable module:

ERROR: "devm_mdiobus_alloc_size" [drivers/net/ethernet/ti/davinci_mdio.ko] undefined!
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Acked-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In the cas_lock_tx function we acquire multiple locks in a loop and
need to use nested lock annotation to prevent lockdep warnings.
Reported-by: NMeelis Roos <mroos@linux.ee>
Signed-off-by: NEmil Goode <emilgoode@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Introduce a generic option store function for sysfs and remove the
specific ones. The attribute name is used to match against the option
which is to be set.
Also adjust the "name" of tlb_dynamic_lb option to match the sysfs
entry and fix the comments and comment style in bond_sysfs.c
The comments which showed obvious behaviour (i.e. behaviour that's seen
in the option's entry) are removed, the ones that explained important
points about the setting function have been moved above the respective
set function in bond_options.c

There's only 1 exception: num_unsol_na/num_grat_arp since it has 2 names

CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: NNikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Commit 91ebb928b "bnx2x: Add support for Multi-Function UNDI" contains a bug
which prevent the emptying of the device's Rx buffers before reset.
As a result, on new boards it is likely HW will reach some fatal assertion
once its interfaces load after UNDI was previously loaded.
Signed-off-by: NYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: NAriel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

unregister_net_sysctl_table will check the ctl_table_header,
so remove the unneed checking
Signed-off-by: NWang Weidong <wangweidong1@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>