Commit Graph

497138 Commits

Author SHA1 Message Date
David S. Miller
6e03f896b5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/vxlan.c
	drivers/vhost/net.c
	include/linux/if_vlan.h
	net/core/dev.c

The net/core/dev.c conflict was the overlap of one commit marking an
existing function static whilst another was adding a new function.

In the include/linux/if_vlan.h case, the type used for a local
variable was changed in 'net', whereas the function got rewritten
to fix a stacked vlan bug in 'net-next'.

In drivers/vhost/net.c, Al Viro's iov_iter conversions in 'net-next'
overlapped with an endainness fix for VHOST 1.0 in 'net'.

In drivers/net/vxlan.c, vxlan_find_vni() added a 'flags' parameter
in 'net-next' whereas in 'net' there was a bug fix to pass in the
correct network namespace pointer in calls to this function.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 14:33:28 -08:00
Linus Torvalds
9d82f5eb33 MMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Stretch ACKs can kill performance with Reno and CUBIC congestion
    control, largely due to LRO and GRO.  Fix from Neal Cardwell.

 2) Fix userland breakage because we accidently emit zero length netlink
    messages from the bridging code.  From Roopa Prabhu.

 3) Carry handling in generic csum_tcpudp_nofold is broken, fix from
    Karl Beldan.

 4) Remove bogus dev_set_net() calls from CAIF driver, from Nicolas
    Dichtel.

 5) Make sure PPP deflation never returns a length greater then the
    output buffer, otherwise we overflow and trigger skb_over_panic().
    Fix from Florian Westphal.

 6) COSA driver needs VIRT_TO_BUS Kconfig dependencies, from Arnd
    Bergmann.

 7) Don't increase route cached MTU on datagram too big ICMPs.  From Li
    Wei.

 8) Fix error path leaks in nf_tables, from Pablo Neira Ayuso.

 9) Fix bitmask handling regression in netlink that broke things like
    acpi userland tools.  From Pablo Neira Ayuso.

10) Wrong header pointer passed to param_type2af() in SCTP code, from
    Saran Maruti Ramanara.

11) Stacked vlans not handled correctly by vlan_get_protocol(), from
    Toshiaki Makita.

12) Add missing DMA memory barrier to xgene driver, from Iyappan
    Subramanian.

13) Fix crash in rate estimators, from Eric Dumazet.

14) We've been adding various workarounds, one after another, for the
    change which added the per-net tcp_sock.  It was meant to reduce
    socket contention but added lots of problems.

    Reduce this instead to a proper per-cpu socket and that rids us of
    all the daemons.

    From Eric Dumazet.

15) Fix memory corruption and OOPS in mlx4 driver, from Jack
    Morgenstein.

16) When we disabled UFO in the virtio_net device, it introduces some
    serious performance regressions.  The orignal problem was IPV6
    fragment ID generation, so fix that properly instead.  From Vlad
    Yasevich.

17) sr9700 driver build breaks on xtensa because it defines macros with
    the same name as those used by the arch code.  Use more unique
    names.  From Chen Gang.

18) Fix endianness in new virio 1.0 mode of the vhost net driver, from
    Michael S Tsirkin.

19) Several sysctls were setting the maxlen attribute incorrectly, from
    Sasha Levin.

20) Don't accept an FQ scheduler quantum of zero, that leads to crashes.
    From Kenneth Klette Jonassen.

21) Fix dumping of non-existing actions in the packet scheduler
    classifier.  From Ignacy Gawędzki.

22) Return the write work_done value when doing TX work in the qlcnic
    driver.

23) ip6gre_err accesses the info field with the wrong endianness, from
    Sabrina Dubroca.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (54 commits)
  sit: fix some __be16/u16 mismatches
  ipv6: fix sparse errors in ip6_make_flowlabel()
  net: remove some sparse warnings
  flow_keys: n_proto type should be __be16
  ip6_gre: fix endianness errors in ip6gre_err
  qlcnic: Fix NAPI poll routine for Tx completion
  amd-xgbe: Set RSS enablement based on hardware features
  amd-xgbe: Adjust for zero-based traffic class count
  cls_api.c: Fix dumping of non-existing actions' stats.
  pkt_sched: fq: avoid hang when quantum 0
  net: rds: use correct size for max unacked packets and bytes
  vhost/net: fix up num_buffers endian-ness
  gianfar: correct the bad expression while writing bit-pattern
  net: usb: sr9700: Use 'SR_' prefix for the common register macros
  Revert "drivers/net: Disable UFO through virtio"
  Revert "drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets"
  ipv6: Select fragment id during UFO segmentation if not set.
  xen-netback: stop the guest rx thread after a fatal error
  net/mlx4_core: Fix kernel Oops (mem corruption) when working with more than 80 VFs
  isdn: off by one in connect_res()
  ...
2015-02-05 11:23:45 -08:00
Linus Torvalds
14365ea2b8 SCSI fixes on 20150205
This patch set is fixing two serious problems which have turned up late in the
 release cycle.  The first fixes a problem with 4k sector disks where the
 transfer length (amount of data sent to the disk) was getting increased every
 time the disk was revalidated leading to potential for overflows.  The other
 is a regression oops fix for some of our last merge window code.
 
 Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This patch set is fixing two serious problems which have turned up
  late in the release cycle.

  The first fixes a problem with 4k sector disks where the transfer
  length (amount of data sent to the disk) was getting increased every
  time the disk was revalidated leading to potential for overflows.

  The other is a regression oops fix for some of our last merge window
  code"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  sd: Fix max transfer length for 4k disks
  scsi: fix device handler detach oops
2015-02-05 11:17:15 -08:00
Linus Torvalds
42345d63fd Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Radeon and amdkfd fixes.

  Radeon ones mostly for oops in some test/benchmark functions since
  fencing changes, and one regression fix for old GPUs,

  There is one cirrus regression fix, the 32bpp broke userspace, so this
  hides it behind a module option for the few users who care.

  I'm off for a few days, so this is probably the final pull I have, if
  I see fixes from Intel I'll forward the pull as I should have email"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/cirrus: Limit modes depending on bpp option
  drm/radeon: fix the crash in test functions
  drm/radeon: fix the crash in benchmark functions
  drm/radeon: properly set vm fragment size for TN/RL
  drm/radeon: don't init gpuvm if accel is disabled (v3)
  drm/radeon: fix PLLs on RS880 and older v2
  drm/amdkfd: Don't create BUG due to incorrect user parameter
  drm/amdkfd: max num of queues can't be 0
  drm/amdkfd: Fix bug in accounting of queues
2015-02-05 11:11:44 -08:00
Linus Torvalds
d445d46d7b spi: Fixes for v3.19
A couple of driver specific fixes:
 
  - Disable DMA mode for i.MX6DL chips due to a hardware bug.
  - Don't use devm_kzalloc() outside of bind/unbind paths in the fsl-dspi
    driver, fixing memory leaks.
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Merge tag 'spi-v3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A couple of driver specific fixes:

   - Disable DMA mode for i.MX6DL chips due to a hardware bug.

   - Don't use devm_kzalloc() outside of bind/unbind paths in the
     fsl-dspi driver, fixing memory leaks"

* tag 'spi-v3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: imx: use pio mode for i.mx6dl
  spi: spi-fsl-dspi: Remove usage of devm_kzalloc
2015-02-05 11:07:25 -08:00
Linus Torvalds
e7394c776f ACPI power management fix for final 3.19
This is a revert of an ACPI Low-power Subsystem (LPSS) driver change
 that was supposed to improve power management of the LPSS DMA controller,
 but introduced more serious problems.
 
 Since fixing them turns out to be non-trivial, it is better to revert
 the commit in question at this point and try to fix the original issue
 differently in the next cycle.
 
 /
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Merge tag 'pm+acpi-3.19-fin' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI power management fix from Rafael  Wysocki:
 "This is a revert of an ACPI Low-power Subsystem (LPSS) driver change
  that was supposed to improve power management of the LPSS DMA
  controller, but introduced more serious problems.

  Since fixing them turns out to be non-trivial, it is better to revert
  the commit in question at this point and try to fix the original issue
  differently in the next cycle"

* tag 'pm+acpi-3.19-fin' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "ACPI / LPSS: introduce a 'proxy' device to power on LPSS for DMA"
2015-02-05 10:57:29 -08:00
Linus Torvalds
f3c2352df1 PCI updates for v3.19:
Enumeration
     - Scan all device numbers on NEC as well as Stratus (Charlotte Richardson)
 
   Resource management
     - Handle read-only BARs on AMD CS553x devices (Myron Stowe)
 
   Synopsys DesignWare
     - Reject MSI-X IRQs (Lucas Stach)
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Merge tag 'pci-v3.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "Enumeration
    - Scan all device numbers on NEC as well as Stratus (Charlotte Richardson)

  Resource management
    - Handle read-only BARs on AMD CS553x devices (Myron Stowe)

  Synopsys DesignWare
    - Reject MSI-X IRQs (Lucas Stach)"

* tag 'pci-v3.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Handle read-only BARs on AMD CS553x devices
  PCI: Add NEC variants to Stratus ftServer PCIe DMI check
  PCI: designware: Reject MSI-X IRQs
2015-02-05 10:23:12 -08:00
Eric Dumazet
a409caecb2 sit: fix some __be16/u16 mismatches
Fixes following sparse warnings :

net/ipv6/sit.c:1509:32: warning: incorrect type in assignment (different base types)
net/ipv6/sit.c:1509:32:    expected restricted __be16 [usertype] sport
net/ipv6/sit.c:1509:32:    got unsigned short
net/ipv6/sit.c:1514:32: warning: incorrect type in assignment (different base types)
net/ipv6/sit.c:1514:32:    expected restricted __be16 [usertype] dport
net/ipv6/sit.c:1514:32:    got unsigned short
net/ipv6/sit.c:1711:38: warning: incorrect type in argument 3 (different base types)
net/ipv6/sit.c:1711:38:    expected unsigned short [unsigned] [usertype] value
net/ipv6/sit.c:1711:38:    got restricted __be16 [usertype] sport
net/ipv6/sit.c:1713:38: warning: incorrect type in argument 3 (different base types)
net/ipv6/sit.c:1713:38:    expected unsigned short [unsigned] [usertype] value
net/ipv6/sit.c:1713:38:    got restricted __be16 [usertype] dport

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:43:14 -08:00
Eric Dumazet
677651462c ipv6: fix sparse errors in ip6_make_flowlabel()
include/net/ipv6.h:713:22: warning: incorrect type in assignment (different base types)
include/net/ipv6.h:713:22:    expected restricted __be32 [usertype] hash
include/net/ipv6.h:713:22:    got unsigned int
include/net/ipv6.h:719:25: warning: restricted __be32 degrades to integer
include/net/ipv6.h:719:22: warning: invalid assignment: ^=
include/net/ipv6.h:719:22:    left side has type restricted __be32
include/net/ipv6.h:719:22:    right side has type unsigned int

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:42:28 -08:00
Eric Dumazet
2ce1ee1780 net: remove some sparse warnings
netdev_adjacent_add_links() and netdev_adjacent_del_links()
are static.

queue->qdisc has __rcu annotation, need to use RCU_INIT_POINTER()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:41:17 -08:00
Eric Dumazet
f4575d3534 flow_keys: n_proto type should be __be16
(struct flow_keys)->n_proto is in network order, use
proper type for this.

Fixes following sparse errors :

net/core/flow_dissector.c:139:39: warning: incorrect type in assignment (different base types)
net/core/flow_dissector.c:139:39:    expected unsigned short [unsigned] [usertype] n_proto
net/core/flow_dissector.c:139:39:    got restricted __be16 [assigned] [usertype] proto
net/core/flow_dissector.c:237:23: warning: incorrect type in assignment (different base types)
net/core/flow_dissector.c:237:23:    expected unsigned short [unsigned] [usertype] n_proto
net/core/flow_dissector.c:237:23:    got restricted __be16 [assigned] [usertype] proto

Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: e0f31d8498 ("flow_keys: Record IP layer protocol in skb_flow_dissect()")
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:40:22 -08:00
Thomas Graf
db79a62183 vxlan: Only set has-GBP bit in header if any other bits would be set
This allows for a VXLAN-GBP socket to talk to a Linux VXLAN socket by
not setting any of the bits.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:38:02 -08:00
Markus Elfring
7af348be47 net: ep93xx_eth: Delete unnecessary checks before the function call "kfree"
The kfree() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:35:00 -08:00
Sabrina Dubroca
d1e158e2d7 ip6_gre: fix endianness errors in ip6gre_err
info is in network byte order, change it back to host byte order
before use. In particular, the current code sets the MTU of the tunnel
to a wrong (too big) value.

Fixes: c12b395a46 ("gre: Support GRE over IPv6")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:33:10 -08:00
Takashi Iwai
27b917e54b xen-netfront: Use static attribute groups for sysfs entries
Instead of manual calls of device_create_file() and
device_remove_files(), assign the static attribute groups to netdev
groups array.  This simplifies the code and avoids the possible
races.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:31:12 -08:00
Takashi Iwai
c4d33e24b6 tun: Use static attribute groups for sysfs entries
Instead of manual calls of device_create_file() and
device_remove_files(), assign the static attribute groups to netdev
groups array.  This simplifies the code and avoids the possible
races.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:30:47 -08:00
Markus Elfring
7061b2bdd6 qlogic: Deletion of unnecessary checks before two function calls
The functions kfree() and vfree() perform also input parameter validation.
Thus the test around their calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:30:12 -08:00
David S. Miller
adfde05166 linux-can-next-for-3.20-20150204
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Merge tag 'linux-can-next-for-3.20-20150204' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2015-02-04

this is a pull request of 2 patches for net-next/master.

Nicholas Mc Guire contributes a patch for the janz-ican3 driver to fix
a mismatch in an assignment. Ahmed S. Darwish contributes a patch for
the kvaser_usb driver, to make the driver more robust during the
bus-off handling.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:29:14 -08:00
Lad, Prabhakar
f86b4ae6ac net: ethernet: ti/cpsw-common.c: fix sparse warning
this patch fixes following sparse warning:

cpsw-common.c:23:5: warning: symbol 'cpsw_am33xx_cm_get_macid' was not declared. Should it be static?

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:27:49 -08:00
Markus Elfring
de7017625e netxen: Delete an unnecessary check before the function call "kfree"
The kfree() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:26:23 -08:00
Markus Elfring
1b4b32c6b8 net: fec: Delete unnecessary checks before the function call "kfree"
The kfree() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:26:04 -08:00
Markus Elfring
2d4ad4f690 myri10ge: Delete an unnecessary check before the function call "kfree"
The kfree() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:25:10 -08:00
Shahed Shaikh
f31ec95fa1 qlcnic: Fix NAPI poll routine for Tx completion
After d75b1ade56 ("net: less interrupt masking in NAPI")
driver's NAPI poll routine is expected to return
exact budget value if it wants to be re-called.

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Fixes: d75b1ade56 ("net: less interrupt masking in NAPI")
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:24:08 -08:00
Markus Elfring
0b5b6beea1 cxgb4: Delete an unnecessary check before the function call "release_firmware"
The release_firmware() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 00:06:47 -08:00
Hariprasad Shenai
3a336cb171 cxgb4: Add low latency socket busy_poll support
cxgb_busy_poll, corresponding to ndo_busy_poll, gets called by the socket
waiting for data.

With busy_poll enabled, improvement is seen in latency numbers as observed by
collecting netperf TCP_RR numbers.
Below are latency number, with and without busy-poll, in a switched environment
for a particular msg size:
netperf command: netperf -4 -H <ip> -l 30 -t TCP_RR -- -r1,1
Latency without busy-poll: ~16.25 us
Latency with busy-poll   : ~08.79 us

Based on original work by Kumar Sanghvi <kumaras@chelsio.com>

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 23:55:58 -08:00
David S. Miller
3fcf901118 Revert "bridge: Let bridge not age 'externally' learnt FDB entries, they are removed when 'external' entity notifies the aging"
This reverts commit 9a05dde59a.

Requested by Scott Feldman.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 23:52:44 -08:00
Eric Dumazet
06eb395fa9 pkt_sched: fq: better control of DDOS traffic
FQ has a fast path for skb attached to a socket, as it does not
have to compute a flow hash. But for other packets, FQ being non
stochastic means that hosts exposed to random Internet traffic
can allocate million of flows structure (104 bytes each) pretty
easily. Not only host can OOM, but lookup in RB trees can take
too much cpu and memory resources.

This patch adds a new attribute, orphan_mask, that is adding
possibility of having a stochastic hash for orphaned skb.

Its default value is 1024 slots, to mimic SFQ behavior.

Note: This does not apply to locally generated TCP traffic,
and no locally generated traffic will share a flow structure
with another perfect or stochastic flow.

This patch also handles the specific case of SYNACK messages:

They are attached to the listener socket, and therefore all map
to a single hash bucket. If listener have set SO_MAX_PACING_RATE,
hoping to have new accepted socket inherit this rate, SYNACK
might be paced and even dropped.

This is very similar to an internal patch Google have used more
than one year.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 22:15:45 -08:00
David S. Miller
f2683b743f Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
More iov_iter work from Al Viro.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:46:55 -08:00
Eric Dumazet
9878196578 tcp: do not pace pure ack packets
When we added pacing to TCP, we decided to let sch_fq take care
of actual pacing.

All TCP had to do was to compute sk->pacing_rate using simple formula:

sk->pacing_rate = 2 * cwnd * mss / rtt

It works well for senders (bulk flows), but not very well for receivers
or even RPC :

cwnd on the receiver can be less than 10, rtt can be around 100ms, so we
can end up pacing ACK packets, slowing down the sender.

Really, only the sender should pace, according to its own logic.

Instead of adding a new bit in skb, or call yet another flow
dissection, we tweak skb->truesize to a small value (2), and
we instruct sch_fq to use new helper and not pace pure ack.

Note this also helps TCP small queue, as ack packets present
in qdisc/NIC do not prevent sending a data packet (RPC workload)

This helps to reduce tx completion overhead, ack packets can use regular
sock_wfree() instead of tcp_wfree() which is a bit more expensive.

This has no impact in the case packets are sent to loopback interface,
as we do not coalesce ack packets (were we would detect skb->truesize
lie)

In case netem (with a delay) is used, skb_orphan_partial() also sets
skb->truesize to 1.

This patch is a combination of two patches we used for about one year at
Google.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:36:31 -08:00
David S. Miller
2a356207ae Merge branch 'rhashtable-next'
Herbert Xu says:

====================
rhashtable: Add iterators and use them

The first patch fixes a potential crash with nft_hash destroying
the table during a shrinking process.  While the next patch adds
rhashtable iterators to replace current manual walks used by
netlink and netfilter.  The final two patches make use of these
iterators in netlink and netfilter.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:35:05 -08:00
Herbert Xu
9a77662882 netfilter: Use rhashtable walk iterator
This patch gets rid of the manual rhashtable walk in nft_hash
which touches rhashtable internals that should not be exposed.
It does so by using the rhashtable iterator primitives.

Note that I'm leaving nft_hash_destroy alone since it's only
invoked on shutdown and it shouldn't be affected by changes
to rhashtable internals (or at least not what I'm planning to
change).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:34:53 -08:00
Herbert Xu
56d28b1e92 netlink: Use rhashtable walk iterator
This patch gets rid of the manual rhashtable walk in netlink
which touches rhashtable internals that should not be exposed.
It does so by using the rhashtable iterator primitives.

In fact the existing code was very buggy.  Some sockets weren't
shown at all while others were shown more than once.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:34:53 -08:00
Herbert Xu
f2dba9c6ff rhashtable: Introduce rhashtable_walk_*
Some existing rhashtable users get too intimate with it by walking
the buckets directly.  This prevents us from easily changing the
internals of rhashtable.

This patch adds the helpers rhashtable_walk_init/exit/start/next/stop
which will replace these custom walkers.

They are meant to be usable for both procfs seq_file walks as well
as walking by a netlink dump.  The iterator structure should fit
inside a netlink dump cb structure, with at least one element to
spare.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:34:52 -08:00
Herbert Xu
28134a53d6 rhashtable: Fix potential crash on destroy in rhashtable_shrink
The current being_destroyed check in rhashtable_expand is not
enough since if we start a shrinking process after freeing all
elements in the table that's also going to crash.

This patch adds a being_destroyed check to the deferred worker
thread so that we bail out as soon as we take the lock.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:34:52 -08:00
Lendacky, Thomas
cf180b8acf amd-xgbe: Set RSS enablement based on hardware features
The RSS support requires enablement based on the features reported by
the hardware. The setting of this flag is missing. Add support to
set the RSS enablement flag based on the reported hardware features.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:31:51 -08:00
Markus Elfring
9b55669c14 NetCP: Deletion of unnecessary checks before two function calls
The functions cpsw_ale_destroy() and of_dev_put() test whether their argument
is NULL and then return immediately. Thus the test around the call
is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:29:47 -08:00
Markus Elfring
f339664c0b IBM-EMAC: Delete an unnecessary check before the function call "of_dev_put"
The of_dev_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:29:47 -08:00
Lendacky, Thomas
211fcf6d21 amd-xgbe: Adjust for zero-based traffic class count
The number of traffic classes reported by the hardware is zero-based
so increment the value returned to get an actual count.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:28:14 -08:00
Ignacy Gawędzki
b057df24a7 cls_api.c: Fix dumping of non-existing actions' stats.
In tcf_exts_dump_stats(), ensure that exts->actions is not empty before
accessing the first element of that list and calling tcf_action_copy_stats()
on it.  This fixes some random segvs when adding filters of type "basic" with
no particular action.

This also fixes the dumping of those "no-action" filters, which more often
than not made calls to tcf_action_copy_stats() fail and consequently netlink
attributes added by the caller to be removed by a call to nla_nest_cancel().

Fixes: 33be627159 ("net_sched: act: use standard struct list_head")
Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:26:12 -08:00
Kenneth Klette Jonassen
3725a26981 pkt_sched: fq: avoid hang when quantum 0
Configuring fq with quantum 0 hangs the system, presumably because of a
non-interruptible infinite loop. Either way quantum 0 does not make sense.

Reproduce with:
sudo tc qdisc add dev lo root fq quantum 0 initial_quantum 0
ping 127.0.0.1

Signed-off-by: Kenneth Klette Jonassen <kennetkl@ifi.uio.no>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 20:07:39 -08:00
Takashi Iwai
7f551b1eee drm/cirrus: Limit modes depending on bpp option
The commit [8975626ea3: drm/cirrus: allow 32bpp framebuffers for
cirrus drm] broke X modesetting driver because cirrus driver still
provides the full list of modes up to 1280x1024 while the 32bpp can
support only up to 800x600.

We might be able to filter out the invalid modes in mode_valid
callback, but unfortunately the bpp in question can't be referred
there for now (let me know if there is a better way to retrieve the
bpp for the probed fb).

So, instead, this patch adds the bpp module option to specify the
maximal bpp explicitly and limits the resolutions in get_modes
depending on its value.

The default value is set to 24 so that the existing stuff keeps
working.  If you need a new 32bpp feature, specify cirrus.bpp=32
option explicitly.

Fixes: 8975626ea3 ('drm/cirrus: allow 32bpp framebuffers for cirrus drm')
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-02-05 10:39:00 +10:00
David S. Miller
9ba11ac04e Merge branch 'mlx4-next'
Amir Vadai says:

====================
Mellanox drivers updates Feb-03-2015

This patchset introduces some small bug fixes and code cleanups in mlx4_core,
mlx4_en and mlx5_core.
I am sending it in parallel to the patchset sent by Or Gerlitz today [1] because
this is the end of the time frame for 3.20. I also checked that there are no
conflicts between those two patchsets (Or's patchset is focused on the bonding
area while this on Mellanox drivers).

The patchset was applied on top of commit 7d37d0c ('net: sctp: Deletion of an
unnecessary check before the function call "kfree"')

[1] - [PATCH 00/10] Add HA and LAG support to mlx4 RoCE and SRIOV services
      http://marc.info/?l=linux-netdev&m=142297582610254&w=2
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:17:51 -08:00
Ido Shamay
cfb53f36a5 net/mlx4_en: Notify TX Vlan offload change
Notify users when TX vlan offload feature changed with ethtool.
Relevant command - ethtool -K <eth> txvlan on/off.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:17:46 -08:00
Ido Shamay
e8e7f018f1 net/mlx4_en: Adjust RX frag strides to frag sizes
This patch improves memory utilization and therefore the packets rate
for special MTU's. Instead of setting the frag_stride to the maximal
hard coded frag_size, use the actual frag_size that is set according to
the MTU, when setting the stride of the last frag.
So, for example, for MTU 1600, where the frag_size of the 2nd frag is
86, the frag_size is set to 128 instead of 4096. See below:

Before:
 frag:0 - size:1536 prefix:0 stride:1536
 frag:1 - size:86 prefix:1536 stride:4096

 frag 0 allocator: - size:32768 frags:21
 frag 1 allocator: - size:32768 frags:8

After:
 frag:0 - size:1536 prefix:0 stride:1536
 frag:1 - size:86 prefix:1536 stride:128

 frag 0 allocator: - size:32768 frags:21
 frag 1 allocator: - size:32768 frags:256

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:17:45 -08:00
Ido Shamay
b110d2ce49 net/mlx4_en: Print page allocator information
After Initialization of page_alloc, print actual allocated page
size and number of frags it contains. prints is done only when drv
message level is set on the interface.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:17:45 -08:00
Or Gerlitz
1c755cc5be net/mlx5_core: Move to use hex PCI device IDs
Align the IDs in the code with the modinfo, lspci -n, etc tools outputs.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:17:45 -08:00
Or Gerlitz
0fab541ac2 net/mlx4_core: Fix misleading debug print on CQE stride support
We do support cache line sizes of 32 and 64 bytes without activating the
CQE stride feature. Fix a misleading print saying that these cache line
sizes aren't supported.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:17:45 -08:00
Maor Gottlieb
6af0a52f65 net/mlx4: mlx4_config_dev_retrieval() - Initialize struct config_dev before using
Add Initialization to struct config_dev before filling and using it.
Fix to warning:

warning: config_dev.rx_checksum_val may be used uninitialized in this function

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:17:45 -08:00
Maor Gottlieb
b332068ce4 net/mlx4_core: Fix mpt_entry initialization in mlx4_mr_rereg_mem_write()
a) Previously, mlx4_mr_rereg_write filled the MPT's start
   and length with the old MPT's values.
   Fixing the initialization to take the new start and length.

b) In addition access flags in mpt_status were initialized instead of
   status due to bad boolean operation. Fixing the operation.

c) Initialization of pd_slave caused a protection error.
   Fix - removing this initialization.

d) In resource_tracker.c: Fixing vf encoding to be one-based.

Fixes: e630664c ('mlx4_core: Add helper functions to support MR re-registration')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:17:45 -08:00
David S. Miller
ce388fff3a Merge branch 'mlx4-next'
Or Gerlitz says:

====================
Add HA and LAG support to mlx4 RoCE and SRIOV services

This series takes advanges of bonding mlx4 Ethernet devices to support
a model of High-Availability and Link Aggregation for more environments.

The mlx4 driver reacts on netdev events generated by bonding when
slave state changes happen by programming a HW V2P (Virt-to-Phys)
port table. Bonding was extended to expose these state changes
through netdev events.

When an mlx4 interface such as the mlx4 IB/RoCE driver is subject to
this policy, QPs are created over virtual ports which are mapped
to one of the two physical ports. When a failure happens, the
re-programming of the V2P table allows traffic to keep flowing.

The mlx4 Ethernet driver interfaces are not subject to this
policy and act as usual.

A 2nd use-case for this model would be to add HA and Link Aggregation
support to single ported mlx4 Ethernet VFs. In this case, the PF Ethernet
intrfaces are bonded, all the VFs see single port devices (which is
supported already today), and VF QPs are subject to V2P.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 16:14:29 -08:00