Commit Graph

44427 Commits

Author SHA1 Message Date
Nikolay Aleksandrov edf36b24c5 bonding: convert arp_all_targets to use the new option API
This patch adds the necessary changes so arp_all_targets would use the
new bonding option API.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-22 15:38:42 -08:00
Nikolay Aleksandrov 162288810c bonding: convert arp_validate to use the new option API
This patch adds the necessary changes so arp_validate would use the
new bonding option API. Also fix some trivial/style errors.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-22 15:38:42 -08:00
Nikolay Aleksandrov a4b32ce7f8 bonding: convert xmit_hash_policy to use the new option API
This patch adds the necessary changes so xmit_hash_policy would use the
new bonding option API. Also fix some trivial/style errors.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-22 15:38:41 -08:00
Nikolay Aleksandrov aa59d8517d bonding: convert packets_per_slave to use the new option API
This patch adds the necessary changes so packets_per_slave would use the
new bonding option API.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-22 15:38:41 -08:00
Nikolay Aleksandrov 2b3798d5e1 bonding: convert mode setting to use the new option API
This patch makes the bond's mode setting use the new option API and
adds support for dependency printing which relies on having an entry for
the mode option in the bond_opts[] array.
Also add the ability to print the mode name when mode dependency fails
and fix some trivial/style errors.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-22 15:38:41 -08:00
Nikolay Aleksandrov 0911736245 bonding: add infrastructure for an option API
This patch adds the necessary basic infrastructure to support
centralized and unified option manipulation API for the bonding. The new
structure bond_option will be used to describe each option with its
dependencies on modes which will be checked automatically thus removing a
lot of duplicated code. Also automatic range checking is added for
some options. Currently the option setting function requires RTNL to
be acquired prior to calling it, since many options already rely on RTNL
it seemed like the best choice to protect all against common race
conditions.
In order to add an option the following steps need to be done:
1. Add an entry BOND_OPT_<option> to bond_options.h so it gets a unique id
   and a bit corresponding to the id
2. Add a bond_option entry to the bond_opts[] array in bond_options.c which
   describes the option, its dependencies and its manipulation function
3. Add code to export the option through sysfs and/or as a module parameter
   (the sysfs export will be made automatically in the future)

The options can have different flags set, currently the following are
supported:
BOND_OPTFLAG_NOSLAVES - require that the bond device has no slaves prior
                        to setting the option
BOND_OPTFLAG_IFDOWN - require that the bond device is down prior to
                      setting the option
BOND_OPTFLAG_RAWVAL - don't parse the value but return it raw for the
                      option to parse

There's a new value structure to describe different types of values
which can have the following flags:
BOND_VALFLAG_DEFAULT - marks the default option (permanent string alias
                       to this option is "default")
BOND_VALFLAG_MIN - the minimum value that this option can have
BOND_VALFLAG_MAX - the maximum value that this option can have

An example would be nice here, so if we have an option which can have
the values "off"(2), "special"(4, default) and supports a range, say
16 - 32, it should be defined as follows:
"off", 2,
"special", 4, BOND_VALFLAG_DEFAULT,
"rangemin", 16, BOND_VALFLAG_MIN,
"rangemax", 32, BOND_VALFLAG_MAX
So we have the valid intervals: [2, 2], [4, 4], [16, 32]
Also the valid strings: "off" = 2, "special" and "default" = 4
                        "rangemin" = 16, "rangemax" = 32

BOND_VALFLAG_(MIN|MAX) can be used to specify a valid range for an
option, if MIN is omitted then 0 is considered as a minimum. If an
exact match is found in the values[] table it will be returned,
otherwise the range is tried (if available).

The option parameter passing is done by using a special structure called
bond_opt_value which can take either a string or a value to parse. One
of the bond_opt_init(val|str) macros should be used depending on which
one does the user want to parse (string or value). Then a call to
__bond_opt_set should be done under RTNL.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-22 15:38:41 -08:00
Hannes Frederic Sowa 809fa972fd reciprocal_divide: update/correction of the algorithm
Jakub Zawadzki noticed that some divisions by reciprocal_divide()
were not correct [1][2], which he could also show with BPF code
after divisions are transformed into reciprocal_value() for runtime
invariance which can be passed to reciprocal_divide() later on;
reverse in BPF dump ended up with a different, off-by-one K in
some situations.

This has been fixed by Eric Dumazet in commit aee636c480
("bpf: do not use reciprocal divide"). This follow-up patch
improves reciprocal_value() and reciprocal_divide() to work in
all cases by using Granlund and Montgomery method, so that also
future use is safe and without any non-obvious side-effects.
Known problems with the old implementation were that division by 1
always returned 0 and some off-by-ones when the dividend and divisor
where very large. This seemed to not be problematic with its
current users, as far as we can tell. Eric Dumazet checked for
the slab usage, we cannot surely say so in the case of flex_array.
Still, in order to fix that, we propose an extension from the
original implementation from commit 6a2d7a955d resp. [3][4],
by using the algorithm proposed in "Division by Invariant Integers
Using Multiplication" [5], Torbjörn Granlund and Peter L.
Montgomery, that is, pseudocode for q = n/d where q, n, d is in
u32 universe:

1) Initialization:

  int l = ceil(log_2 d)
  uword m' = floor((1<<32)*((1<<l)-d)/d)+1
  int sh_1 = min(l,1)
  int sh_2 = max(l-1,0)

2) For q = n/d, all uword:

  uword t = (n*m')>>32
  q = (t+((n-t)>>sh_1))>>sh_2

The assembler implementation from Agner Fog [6] also helped a lot
while implementing. We have tested the implementation on x86_64,
ppc64, i686, s390x; on x86_64/haswell we're still half the latency
compared to normal divide.

Joint work with Daniel Borkmann.

  [1] http://www.wireshark.org/~darkjames/reciprocal-buggy.c
  [2] http://www.wireshark.org/~darkjames/set-and-dump-filter-k-bug.c
  [3] https://gmplib.org/~tege/division-paper.pdf
  [4] http://homepage.cs.uiowa.edu/~jones/bcd/divide.html
  [5] http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1.2556
  [6] http://www.agner.org/optimize/asmlib.zip

Reported-by: Jakub Zawadzki <darkjames-ws@darkjames.pl>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Austin S Hemmelgarn <ahferroin7@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: Jesse Gross <jesse@nicira.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Veaceslav Falico <vfalico@redhat.com>
Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: Jakub Zawadzki <darkjames-ws@darkjames.pl>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 23:17:20 -08:00
Daniel Borkmann f337db64af random32: add prandom_u32_max and convert open coded users
Many functions have open coded a function that returns a random
number in range [0,N-1]. Under the assumption that we have a PRNG
such as taus113 with being well distributed in [0, ~0U] space,
we can implement such a function as uword t = (n*m')>>32, where
m' is a random number obtained from PRNG, n the right open interval
border and t our resulting random number, with n,m',t in u32 universe.

Lets go with Joe and simply call it prandom_u32_max(), although
technically we have an right open interval endpoint, but that we
have documented. Other users can further be migrated to the new
prandom_u32_max() function later on; for now, we need to make sure
to migrate reciprocal_divide() users for the reciprocal_divide()
follow-up fixup since their function signatures are going to change.

Joint work with Hannes Frederic Sowa.

Cc: Jakub Zawadzki <darkjames-ws@darkjames.pl>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 23:17:20 -08:00
Moni Shoua 6cd28f044b net/mlx4_core: Remove unnecessary validation for port number
This is a fix to a regression introduced by commit:
"982290a net/mlx4_core: Check port number for validity
before accessing data"

IPoIB could not attach to multicast group and we get this in dmesg:
[144214.145008] ib0: failed to attach to multicast group, ret = -22
[144214.145016] ib0: couldn't attach QP to multicast group ff12:401b:ffff:0000:0000:0000:ffff:ffff
[144214.145019] ib0: multicast join failed for ff12:401b:ffff:0000:0000:0000:ffff:ffff, status -22

The cause to the problem is because port is extracted from gid[5].
Which is only valid for Ethernet.
Removed this validation in mlx4_qp_attach_common(), which is accessed
from both Ethernet and IB flows.
Error flow for bad port value in Ethernet is already exists in that
function.

Signed-off-by: Moni Shoua <monis@mellanox.co.il>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 23:14:27 -08:00
Somnath Kotur a6b74e01f0 be2net: Fix be_vlan_add/rem_vid() routines
The current logic to put interface into VLAN Promiscous mode is not correct.
We should increment "adapter->vlans_added" before calling be_vid_config().
Also removed some unwanted log messages.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 23:12:59 -08:00
Ariel Elior 076d132958 bnx2x: Fix VF flr flow
When a VF originating from a given PF is flr-ed, that PF gets an interrupt
from the chip management and takes a part in the flr process.

This patch fixes several corner cases in which the driver performs its part
of the flr flow out-of-order, causing the FW to assert due to badly timed
messages received from the driver.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 23:12:59 -08:00
Or Gerlitz dc01e7d344 net: Add GRO support for vxlan traffic
Add GRO handlers for vxlann, by using the UDP GRO infrastructure.

For single TCP session that goes through vxlan tunneling I got nice
improvement from 6.8Gbs to 11.5Gbs

--> UDP/VXLAN GRO disabled
$ netperf  -H 192.168.52.147 -c -C

$ netperf -t TCP_STREAM -H 192.168.52.147 -c -C
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.52.147 () port 0 AF_INET
Recv   Send    Send                          Utilization       Service Demand
Socket Socket  Message  Elapsed              Send     Recv     Send    Recv
Size   Size    Size     Time     Throughput  local    remote   local   remote
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/KB   us/KB

 87380  65536  65536    10.00      6799.75   12.54    24.79    0.604   1.195

--> UDP/VXLAN GRO enabled

$ netperf -t TCP_STREAM -H 192.168.52.147 -c -C
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.52.147 () port 0 AF_INET
Recv   Send    Send                          Utilization       Service Demand
Socket Socket  Message  Elapsed              Send     Recv     Send    Recv
Size   Size    Size     Time     Throughput  local    remote   local   remote
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/KB   us/KB

 87380  65536  65536    10.00      11562.72   24.90    20.34    0.706   0.577

Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 18:05:04 -08:00
Vince Bridgers 2618abb73c stmmac: Fix kernel crashes for jumbo frames
These changes correct the following issues with jumbo frames on the
stmmac driver:

1) The Synopsys EMAC can be configured to support different FIFO
sizes at core configuration time. There's no way to query the
controller and know the FIFO size, so the driver needs to get this
information from the device tree in order to know how to correctly
handle MTU changes and setting up dma buffers. The default
max-frame-size is as currently used, which is the size of a jumbo
frame.

2) The driver was enabling Jumbo frames by default, but was not allocating
dma buffers of sufficient size to handle the maximum possible packet
size that could be received. This led to memory corruption since DMAs were
occurring beyond the extent of the allocated receive buffers for certain types
of network traffic.

kernel BUG at net/core/skbuff.c:126!
Internal error: Oops - BUG: 0 [#1] SMP ARM
Modules linked in:
CPU: 0 PID: 563 Comm: sockperf Not tainted 3.13.0-rc6-01523-gf7111b9 #31
task: ef35e580 ti: ef252000 task.ti: ef252000
PC is at skb_panic+0x60/0x64
LR is at skb_panic+0x60/0x64
pc : [<c03c7c3c>]    lr : [<c03c7c3c>]    psr: 60000113
sp : ef253c18  ip : 60000113  fp : 00000000
r10: ef3a5400  r9 : 00000ebc  r8 : ef3a546c
r7 : ee59f000  r6 : ee59f084  r5 : ee59ff40  r4 : ee59f140
r3 : 000003e2  r2 : 00000007  r1 : c0b9c420  r0 : 0000007d
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c5387d  Table: 2e8ac04a  DAC: 00000015
Process sockperf (pid: 563, stack limit = 0xef252248)
Stack: (0xef253c18 to 0xef254000)
3c00:                                                       00000ebc ee59f000
3c20: ee59f084 ee59ff40 ee59f140 c04a9cd8 ee8c50c0 00000ebc ee59ff40 00000000
3c40: ee59f140 c02d0ef0 00000056 ef1eda80 ee8c50c0 00000ebc 22bbef29 c0318f8c
3c60: 00000056 ef3a547c ffe2c716 c02c9c90 c0ba1298 ef3a5838 ef3a5838 ef3a5400
3c80: 000020c0 ee573840 000055cb ef3f2050 c053f0e0 c0319214 22b9b085 22d92813
3ca0: 00001c80 004b8e00 ef3a5400 ee573840 ef3f2064 22d92813 ef3f2064 000055cb
3cc0: ef3f2050 c031a19c ef252000 00000000 00000000 c0561bc0 00000000 ff00ffff
3ce0: c05621c0 ef3a5400 ef3f2064 ee573840 00000020 ef3f2064 000055cb ef3f2050
3d00: c053f0e0 c031cad0 c053e740 00000e60 00000000 00000000 ee573840 ef3a5400
3d20: ef0a6e00 00000000 ef3f2064 c032507c 00010000 00000020 c0561bc0 c0561bc0
3d40: ee599850 c032799c 00000000 ee573840 c055a380 ef3a5400 00000000 ef3f2064
3d60: ef3f2050 c032799c 0101c7c0 2b6755cb c059a280 c030e4d8 000055cb ffffffff
3d80: ee574fc0 c055a380 ee574000 ee573840 00002b67 ee573840 c03fe9c4 c053fa68
3da0: c055a380 00001f6f 00000000 ee573840 c053f0e0 c0304fdc ef0a6e01 ef3f2050
3dc0: ee573858 ef031000 ee573840 c03055d8 c0ba0c40 ef000f40 00100100 c053f0dc
3de0: c053ffdc c053f0f0 00000008 00000000 ef031000 c02da948 00001140 00000000
3e00: c0563c78 ef253e5f 00000020 ee573840 00000020 c053f0f0 ef313400 ee573840
3e20: c053f0e0 00000000 00000000 c05380c0 ef313400 00001000 00000015 c02df280
3e40: ee574000 ef001e00 00000000 00001080 00000042 005cd980 ef031500 ef031500
3e60: 00000000 c02df824 ef031500 c053e390 c0541084 f00b1e00 c05925e8 c02df864
3e80: 00001f5c ef031440 c053e390 c0278524 00000002 00000000 c0b9eb48 c02df280
3ea0: ee8c7180 00000100 c0542ca8 00000015 00000040 ef031500 ef031500 ef031500
3ec0: c027803c ef252000 00000040 000000ec c05380c0 c0b9eb40 c0b9eb48 c02df940
3ee0: ef060780 ffffa4dd c0564a9c c056343c 002e80a8 00000080 ef031500 00000001
3f00: c053808c ef252000 fffec100 00000003 00000004 002e80a8 0000000c c00258f0
3f20: 002e80a8 c005e704 00000005 00000100 c05634d0 c0538080 c05333e0 00000000
3f40: 0000000a c0565580 c05380c0 ffffa4dc c05434f4 00400100 00000004 c0534cd4
3f60: 00000098 00000000 fffec100 002e80a8 00000004 002e80a8 002a20e0 c0025da8
3f80: c0534cd4 c000f020 fffec10c c053ea60 ef253fb0 c0008530 0000ffe2 b6ef67f4
3fa0: 40000010 ffffffff 00000124 c0012f3c 0000ffe2 002e80f0 0000ffe2 00004000
3fc0: becb6338 becb6334 00000004 00000124 002e80a8 00000004 002e80a8 002a20e0
3fe0: becb6300 becb62f4 002773bb b6ef67f4 40000010 ffffffff 00000000 00000000
[<c03c7c3c>] (skb_panic+0x60/0x64) from [<c02d0ef0>] (skb_put+0x4c/0x50)
[<c02d0ef0>] (skb_put+0x4c/0x50) from [<c0318f8c>] (tcp_collapse+0x314/0x3ec)
[<c0318f8c>] (tcp_collapse+0x314/0x3ec) from [<c0319214>]
(tcp_try_rmem_schedule+0x1b0/0x3c4)
[<c0319214>] (tcp_try_rmem_schedule+0x1b0/0x3c4) from [<c031a19c>]
(tcp_data_queue+0x480/0xe6c)
[<c031a19c>] (tcp_data_queue+0x480/0xe6c) from [<c031cad0>]
(tcp_rcv_established+0x180/0x62c)
[<c031cad0>] (tcp_rcv_established+0x180/0x62c) from [<c032507c>]
(tcp_v4_do_rcv+0x13c/0x31c)
[<c032507c>] (tcp_v4_do_rcv+0x13c/0x31c) from [<c032799c>]
(tcp_v4_rcv+0x718/0x73c)
[<c032799c>] (tcp_v4_rcv+0x718/0x73c) from [<c0304fdc>]
(ip_local_deliver+0x98/0x274)
[<c0304fdc>] (ip_local_deliver+0x98/0x274) from [<c03055d8>]
(ip_rcv+0x420/0x758)
[<c03055d8>] (ip_rcv+0x420/0x758) from [<c02da948>]
(__netif_receive_skb_core+0x44c/0x5bc)
[<c02da948>] (__netif_receive_skb_core+0x44c/0x5bc) from [<c02df280>]
(netif_receive_skb+0x48/0xb4)
[<c02df280>] (netif_receive_skb+0x48/0xb4) from [<c02df824>]
(napi_gro_flush+0x70/0x94)
[<c02df824>] (napi_gro_flush+0x70/0x94) from [<c02df864>]
(napi_complete+0x1c/0x34)
[<c02df864>] (napi_complete+0x1c/0x34) from [<c0278524>]
(stmmac_poll+0x4e8/0x5c8)
[<c0278524>] (stmmac_poll+0x4e8/0x5c8) from [<c02df940>]
(net_rx_action+0xc4/0x1e4)
[<c02df940>] (net_rx_action+0xc4/0x1e4) from [<c00258f0>]
(__do_softirq+0x12c/0x2e8)
[<c00258f0>] (__do_softirq+0x12c/0x2e8) from [<c0025da8>] (irq_exit+0x78/0xac)
[<c0025da8>] (irq_exit+0x78/0xac) from [<c000f020>] (handle_IRQ+0x44/0x90)
[<c000f020>] (handle_IRQ+0x44/0x90) from [<c0008530>]
(gic_handle_irq+0x2c/0x5c)
[<c0008530>] (gic_handle_irq+0x2c/0x5c) from [<c0012f3c>]
(__irq_usr+0x3c/0x60)

3) The driver was setting the dma buffer size after allocating dma buffers,
which caused a system panic when changing the MTU.

BUG: Bad page state in process ifconfig  pfn:2e850
page:c0b72a00 count:0 mapcount:0 mapping:  (null) index:0x0
page flags: 0x200(arch_1)
Modules linked in:
CPU: 0 PID: 566 Comm: ifconfig Not tainted 3.13.0-rc6-01523-gf7111b9 #29
[<c001547c>] (unwind_backtrace+0x0/0xf8) from [<c00122dc>]
(show_stack+0x10/0x14)
[<c00122dc>] (show_stack+0x10/0x14) from [<c03c793c>] (dump_stack+0x70/0x88)
[<c03c793c>] (dump_stack+0x70/0x88) from [<c00b2620>] (bad_page+0xc8/0x118)
[<c00b2620>] (bad_page+0xc8/0x118) from [<c00b302c>]
(get_page_from_freelist+0x744/0x870)
[<c00b302c>] (get_page_from_freelist+0x744/0x870) from [<c00b40f4>]
(__alloc_pages_nodemask+0x118/0x86c)
[<c00b40f4>] (__alloc_pages_nodemask+0x118/0x86c) from [<c00b4858>]
(__get_free_pages+0x10/0x54)
[<c00b4858>] (__get_free_pages+0x10/0x54) from [<c00cba1c>]
(kmalloc_order_trace+0x24/0xa0)
[<c00cba1c>] (kmalloc_order_trace+0x24/0xa0) from [<c02d199c>]
(__kmalloc_reserve.isra.21+0x24/0x70)
[<c02d199c>] (__kmalloc_reserve.isra.21+0x24/0x70) from [<c02d240c>]
(__alloc_skb+0x68/0x13c)
[<c02d240c>] (__alloc_skb+0x68/0x13c) from [<c02d3930>]
(__netdev_alloc_skb+0x3c/0xe8)
[<c02d3930>] (__netdev_alloc_skb+0x3c/0xe8) from [<c0279378>]
(stmmac_open+0x63c/0x1024)
[<c0279378>] (stmmac_open+0x63c/0x1024) from [<c02e18cc>]
(__dev_open+0xa0/0xfc)
[<c02e18cc>] (__dev_open+0xa0/0xfc) from [<c02e1b40>]
(__dev_change_flags+0x94/0x158)
[<c02e1b40>] (__dev_change_flags+0x94/0x158) from [<c02e1c24>]
(dev_change_flags+0x18/0x48)
[<c02e1c24>] (dev_change_flags+0x18/0x48) from [<c0337bc0>]
(devinet_ioctl+0x638/0x700)
[<c0337bc0>] (devinet_ioctl+0x638/0x700) from [<c02c7aec>]
(sock_ioctl+0x64/0x290)
[<c02c7aec>] (sock_ioctl+0x64/0x290) from [<c0100890>]
(do_vfs_ioctl+0x78/0x5b8)
[<c0100890>] (do_vfs_ioctl+0x78/0x5b8) from [<c0100e0c>] (SyS_ioctl+0x3c/0x5c)
[<c0100e0c>] (SyS_ioctl+0x3c/0x5c) from [<c000e760>]

The fixes have been verified using reproducible, automated testing.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 17:05:27 -08:00
stephen hemminger 8d78316386 bond: make slave_sysfs_ops static
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 16:45:41 -08:00
Jesse Brandeburg ead5139aa1 net: add vxlan description
Add a description to the vxlan module, helping save the world
from the minions of destruction and confusion.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 16:28:07 -08:00
Ben Hutchings 13c92e82e8 sfc: Fix transposed ptp_{under, over}size_sync_windows statistics
Somehow I transposed these two while bringing the original statistics
support upstream.

Fixes: 99691c4ac1 ('sfc: Add PTP counters to ethtool stats')
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 14:46:12 -08:00
Jon Cooper 3e336261f8 sfc: Change efx_mcdi_reset_port to use ENTITY_RESET MC command.
PORT_RESET MC command was NOP in the ef10 firmware hence we are using
ENTITY_RESET to make sure all resource allocations are reset.

Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 14:46:12 -08:00
damuzi000 75e4364f67 net: stmmac: fix NULL pointer dereference in stmmac_get_tx_hwtstamp
When timestamping is enabled, stmmac_tx_clean will call
stmmac_get_tx_hwtstamp to get tx TS.
But the skb can be NULL because the last of its tx_skbuff is NULL
if this packet frame is filled in more than one descriptors.

To fix the issue, change the code:
- Store TX skb to the tx_skbuff[] of frame's last segment.
- Check skb is not NULL in stmmac_get_tx_hwtstamp.

Signed-off-by: Bruce Liu <damuzi000@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 20:02:45 -08:00
Chen-Yu Tsai af0bd4e9ba net: stmmac: sunxi platform extensions for GMAC in Allwinner A20 SoC's
The Allwinner A20 has an ethernet controller that seems to be
an early version of Synopsys DesignWare MAC 10/100/1000 Universal,
which is supported by the stmmac driver.

Allwinner's GMAC requires setting additional registers in the SoC's
clock control unit.

The exact version of the DWMAC IP that Allwinner uses is unknown,
thus the exact feature set is unknown.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 20:02:41 -08:00
Chen-Yu Tsai 022066f50f net: stmmac: Use driver data and callbacks tied with compatible strings
The stmmac driver core allows passing feature flags and callbacks via
platform data. Add a similar stmmac_of_data to pass flags and callbacks
tied to compatible strings. This allows us to extend stmmac with glue
layers for different SoCs.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 20:02:03 -08:00
Chen-Yu Tsai 436f7ecdcc net: stmmac: Deprecate snps, phy-addr and auto-detect PHY address
The snps,phy-addr device tree property is non-standard, and should be
removed in favor of proper phy node support. Remove it from the binding
documents and warn if the property is still used.

Most PHYs respond to address 0, but a few don't, so auto-detect PHY
address by default, to make up for the lack of explicit address selection.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 20:02:03 -08:00
Chen-Yu Tsai 6aedb8c06d net: stmmac: Honor DT parameter to force DMA store and forward mode
"snps,force_sf_dma_mode" is documented in stmmac device tree bindings,
but is never handled by the driver.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 20:02:02 -08:00
Chen-Yu Tsai 938dfdaa3c net: stmmac: Allocate and pass soc/board specific data to callbacks
The current .init and .exit callbacks requires access to driver
private data structures. This is not a good seperation and abstraction.

Instead, we add a new .setup callback for allocating private data, and
pass the returned pointer to the other callbacks.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 20:02:02 -08:00
Chen-Yu Tsai c5e4ddbdfa net: stmmac: Add support for optional reset control
The DWMAC has a reset assert line, which is used on some SoCs. Add an
optional reset control to stmmac driver core.

To support reset control deferred probing, this patch changes the driver
probe function to return the actual error, instead of just -EINVAL.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 20:02:02 -08:00
Chen-Yu Tsai 62866e9873 net: stmmac: Enable stmmac main clock when probing hardware
The stmmac driver does not enable the main clock during the probe phase.
If the clock was not enabled by the boot loader or was disabled by the
kernel, hardware features and the MDIO bus would not be probed properly.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 20:02:02 -08:00
stephen hemminger 395056edd6 phy: cleanup 10g code
Code should avoid needless exports, don't export something unless it used.
Make local functions static and remove unused stubs.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 19:55:50 -08:00
Fengguang Wu a91e6810da qlcnic: fix sparse warnings
Previous patch changed prototypes, but forgot functions.

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-19 19:55:50 -08:00
David S. Miller 4180442058 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
	net/ipv4/tcp_metrics.c

Overlapping changes between the "don't create two tcp metrics objects
with the same key" race fix in net and the addition of the destination
address in the lookup key in net-next.

Minor overlapping changes in bnx2x driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-18 00:55:41 -08:00
Emil Tantilov 29d37fa162 ixgbevf: merge ixgbevf_tx_map and ixgbevf_tx_queue into a single function
This change merges the ixgbevf_tx_map call and the ixgbevf_tx_queue call
into a single function.  In order to make room for this setting of cmd_type
and olinfo flags is done in separate functions.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:15:10 -08:00
Emil Tantilov 9bdfefd21a ixgbevf: redo dma mapping using the tx buffer info
This patch takes advantage of the dma buffer always being present in the
first descriptor and mapped as single. As such we can call dma_unmap_single
and don't need to check for DMA mapping in ixgbevf_clean_tx_irq().

In addition this patch makes use of the DMA API.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:15:10 -08:00
Emil Tantilov 7ad1a09351 ixgbevf: make the first tx_buffer a repository for most of the skb info
This change makes it so that the first tx_buffer structure acts as a
central storage location for most of the info about the skb we are about
to transmit.

In addition this patch makes tx_flags part of the ixgbevf_tx_buffer struct.
This allows us to use the flags directly from the stucture and as result
removes the tx_flags parameter from some functions. Also as a cleanup
mapped_as_page is folded into tx_flags and some unused flags were removed.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:15:10 -08:00
Emil Tantilov 6e2580f9a4 ixgbevf: add tx counters
This patch adds counters for tx_restart_queue and tx_timeout_count.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:15:10 -08:00
Emil Tantilov 9703192219 ixgbevf: remove counters for Tx/Rx checksum offload
This patch removes the Tx/Rx counters for checksum offload.

The Tx counter was never updated and the Rx counter is of limited use.
This is in effort to clean up the counters and make them consistent
with the counters shown by ixgbe.

Also this patch removes some members of the adapter structure that were
never used and shuffles others to reduce number of holes.

before:
	/* size: 1568, cachelines: 25, members: 48 */
	/* sum members: 1519, holes: 10, sum holes: 43 */
	/* padding: 6 */
	/* last cacheline: 32 bytes */

after:
	/* size: 1480, cachelines: 24, members: 43 */
	/* sum members: 1479, holes: 1, sum holes: 1 */
	/* last cacheline: 8 bytes */

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:15:10 -08:00
Emil Tantilov 095e2617ce ixgbevf: move ring specific stats into ring specific structure
This patch moves hot-path specific statistics into the ring structure.
This allows us to drop the adapter structure in some functions and should
help with performance.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:15:10 -08:00
Emil Tantilov 05d063aa86 ixgbevf: make use of the dev pointer in the ixgbevf_ring struct
This patch cleans up the code by removing the adapter structure as
parameter from multiple functions. The adapter structure was previously
being used to access the dev pointer, but this can also be done via the
ixgbevf_ring structure. This way we can drop the adapter as parameter from
these functions.

This patch also includes small cleanups in some error code paths.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:15:10 -08:00
Shannon Nelson ab60085e2e i40e: Fix device ID define names to align to standard
Rework the device ID #defines to follow the _DEV_ID convention
already established in the other Intel drivers.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:04 -08:00
Neerav Parikh 9d488727b4 i40e: add DCB option to Kconfig
Allow compiling DCB related files if I40E_DCB option
is supported in the kernel configuration.

DCB is disabled by default.

Signed-off-by: Neerav Parikh <Neerav.Parikh@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Tested-By: Jack Morgan<jack.morgan@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:04 -08:00
Neerav Parikh 4e3b35b044 i40e: add DCB and DCBNL support
This patch adds capability to configure DCB on i40e network
interfaces using Intel XL710 adapter firmware APIs.

By default all VSIs are only enabled for the default traffic
class enabled by firmware for any given PF. The driver would
query the firmware for the traffic classes that are enabled for
the port and reconfigure the LAN VSI to match to the port traffic
class settings. All other VSIs are only enabled for the default
traffic class settings for now.

The driver registers and listens to firmware events that may
require change in the DCB settings. It may reconfigure the VSI
settings based on these events.

This patch exposes IEEE DCBNL interfaces for the i40e driver to
allow any application to query the DCB settings on the adapter.

Signed-off-by: Neerav Parikh <Neerav.Parikh@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-By: Jack Morgan<jack.morgan@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:04 -08:00
Neerav Parikh afb3ff0da4 i40e: implement DCB support infastructure
Intel XL710 series of adapters support QoS as per the
IEEE 802.1 DCB (Data Center Bridging) standard.
This is supported in conjuction with:
- Enhanced Transmission Selection (ETS) - IEEE 802.1Qaz
- Priority Flow Control (PFC) - IEEE 802.1Qbb
- DCB eXchange Protocol (DCBX) - IEEE 802.1Qaz

On Intel XL710 adapters DCBX is performed by the adapter
firmware. The firmware runs DCBX in willing mode and configures
the port as per the DCB settings recommended by it's link
partner.

By default in absence of any DCBX; firmware would configure the
port with a single traffic class and all of the port bandwith
will be allocated to that traffic class.

This patch adds functions and calls to support querying and
configuring DCB using firmware APIs.

Signed-off-by: Neerav Parikh <Neerav.Parikh@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-By: Jack Morgan<jack.morgan@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:04 -08:00
Anjali Singhai Jain cbf6132524 i40e: refactor flow director
The i40e hardware was generating some inconsistent results
when using current programming methods.  This refactor
fixes the inconsistencies that were preventing clean
unloads of the driver, and moves the queues for handling
flow director errors into their own hardware VSI.

This patch also implements a corrected version of the
basic ethtool add ntuple rule, which will disable
the driver's automatic flow programming.  A future patch
adds remove/replay/list support for ntuple.

Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:04 -08:00
Jesse Brandeburg 60ea5f83cd i40e: rename defines
The FLAG_FDIR_* defines can be renamed to be more descriptive.
This patch is in preparation for the following where the fdir
code is refactored.

Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:03 -08:00
Jesse Brandeburg 8fb905b345 i40e: whitespace fixes
Fix more whitespace issues, including making some locals declared
in a nicer order.

Also update Copyright string printed when the driver loads.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:03 -08:00
Jesse Brandeburg d0b1024925 i40e: Change firmware workaround
Remove a workaround that is no longer necessary and implement
a better understanding of what firmware is returning in the MSI-X
vector count.  This makes it so that the driver ends up with the
right amount of queues when using all available MSI-X vectors.

Change-ID: I34e60cc71dcfb1b5412f37df956fedcc49ade187
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:03 -08:00
Jesse Brandeburg e15c9fa036 i40e: fix compile warning on checksum_local
Compile testing with higher warning levels found this complaint:
i40e_nvm.c: warning: 'checksum_local' may be used uninitialized in
this function

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 19:13:03 -08:00
Michael Dalton 8cabd6a06c virtio-net: fix build error when CONFIG_AVERAGE is not enabled
Commit ab7db91705 ("virtio-net: auto-tune mergeable rx buffer size for
improved performance") introduced a virtio-net dependency on EWMA.
The inclusion of EWMA is controlled by CONFIG_AVERAGE. Fix build error
when CONFIG_AVERAGE is not enabled by adding select AVERAGE to
virtio-net's Kconfig entry.

Build failure reported using config make ARCH=s390 defconfig.

Signed-off-by: Michael Dalton <mwdalton@google.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 18:58:38 -08:00
Don Skidmore 86f359f6b8 ixgbevf: bump version
Bump the version number to better match functionality provided with out of
tree driver of the same version.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 18:56:59 -08:00
Don Skidmore f341c4e0a8 ixgbe: bump version number
Bump the version number to better match functionality provided with out
of tree driver of the same version.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 18:56:59 -08:00
Jacob Keller 78d820e848 ixgbe: add braces around else condition in ixgbe_qv_lock_* calls
This patch adds braces around the ixgbe_qv_lock_* calls which previously only
had braces around the if portion. Kernel style guidelines for this require
parenthesis around all conditions if they are required around one. In addition
the comment while not illegal C syntax makes the code look wrong at a cursory
glance. This patch corrects the style and adds braces so that the full if-else
block is uniform.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 18:56:59 -08:00
Eric Dumazet 0113e34bec net: ftgmac100: use kfree_skb() where appropriate
In order to get correct drop monitor notifications for dropped
packets, we should call kfree_skb() instead of dev_kfree_skb()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 18:54:13 -08:00
sfeldma@cumulusnetworks.com 1d3ee88ae0 bonding: add netlink attributes to slave link dev
If link is IFF_SLAVE, extend link dev netlink attributes to include
slave attributes with new IFLA_SLAVE nest.  Add netlink notification
(RTM_NEWLINK) when slave status changes from backup to active, or
visa-versa.

Adds new ndo_get_slave op to net_device_ops to fill skb with IFLA_SLAVE
attributes.  Currently only used by bonding driver, but could be
used by other aggregating devices with slaves.

Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-17 18:51:58 -08:00