| Commit message (Collapse) | Author | Age |
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This pure documentation fix tries to align the "idle" and
"sleep" pin states to the idle and suspend states from
runtime PM.
Cc: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This doesn't change semantics, just looks nicer.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO changes from Linus Walleij:
"So this is the LW GPIO patch stack for v3.7:
- refactoring from Thierry Redding at Arnd Bergmann's request to use
the seq_file iterator interface in gpiolib.
- A new driver for Avionic Design's N-bit GPIO expander.
- Two instances of mutexes replaced by spinlocks from Axel Lin to
code that is supposed to be fastpath compliant.
- IRQ demuxer and gpio_to_irq() support for pcf857x by Kuninori
Morimoto.
- Dynamic GPIO numbers, device tree support, daisy chaining and some
other fixes for the 74x164 driver by Maxime Ripard.
- IRQ domain and device tree support for the tc3589x driver by Lee
Jones.
- Some conversion to use managed resources devm_* code.
- Some instances of clk_prepare() or clk_prepare_enable() added to
support the new, stricter common clock framework.
- Some for_each_set_bit() simplifications.
- Then a lot of fixes as we fixed up all of the above tripping over
our own shoelaces and that kind of thing."
* tag 'gpio-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (34 commits)
gpio: pcf857x: select IRQ_DOMAIN
gpio: Document device_node's det_debounce
gpio-lpc32xx: Add GPI_28
gpio: adnp: dt: Reference generic interrupt binding
gpio: Add Avionic Design N-bit GPIO expander support
gpio: pxa: using for_each_set_bit to simplify the code
gpio_msm: using for_each_set_bit to simplify the code
gpio: Enable the tc3298x GPIO expander driver for Device Tree
gpio: Provide the tc3589x GPIO expander driver with an IRQ domain
ARM: shmobile: kzm9g: use gpio-keys instead of gpio-keys-polled
gpio: pcf857x: fixup smatch WARNING
gpio: 74x164: Add support for the daisy-chaining
gpio: 74x164: dts: Add documentation for the dt binding
dt: Fix incorrect reference in gpio-led documentation
gpio: 74x164: Add device tree support
gpio: 74x164: Use dynamic gpio number assignment if no pdata is present
gpio: 74x164: Use devm_kzalloc
gpio: 74x164: Use module_spi_driver boiler plate function
gpio: sx150x: Use irq_data_get_irq_chip_data() at appropriate places
gpio: em: Use irq_data_get_irq_chip_data() at appropriate places
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pcf857x chip has some pins, but interrupt pin is only 1 pin.
And gpiolib requests 1 interrupt per 1 gpio pin.
Thus, this patch added demuxed irq to pcf857x driver,
and enabled gpio_to_irq().
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Pull networking changes from David Miller:
1) GRE now works over ipv6, from Dmitry Kozlov.
2) Make SCTP more network namespace aware, from Eric Biederman.
3) TEAM driver now works with non-ethernet devices, from Jiri Pirko.
4) Make openvswitch network namespace aware, from Pravin B Shelar.
5) IPV6 NAT implementation, from Patrick McHardy.
6) Server side support for TCP Fast Open, from Jerry Chu and others.
7) Packet BPF filter supports MOD and XOR, from Eric Dumazet and Daniel
Borkmann.
8) Increate the loopback default MTU to 64K, from Eric Dumazet.
9) Use a per-task rather than per-socket page fragment allocator for
outgoing networking traffic. This benefits processes that have very
many mostly idle sockets, which is quite common.
From Eric Dumazet.
10) Use up to 32K for page fragment allocations, with fallbacks to
smaller sizes when higher order page allocations fail. Benefits are
a) less segments for driver to process b) less calls to page
allocator c) less waste of space.
From Eric Dumazet.
11) Allow GRO to be used on GRE tunnels, from Eric Dumazet.
12) VXLAN device driver, one way to handle VLAN issues such as the
limitation of 4096 VLAN IDs yet still have some level of isolation.
From Stephen Hemminger.
13) As usual there is a large boatload of driver changes, with the scale
perhaps tilted towards the wireless side this time around.
Fix up various fairly trivial conflicts, mostly caused by the user
namespace changes.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1012 commits)
hyperv: Add buffer for extended info after the RNDIS response message.
hyperv: Report actual status in receive completion packet
hyperv: Remove extra allocated space for recv_pkt_list elements
hyperv: Fix page buffer handling in rndis_filter_send_request()
hyperv: Fix the missing return value in rndis_filter_set_packet_filter()
hyperv: Fix the max_xfer_size in RNDIS initialization
vxlan: put UDP socket in correct namespace
vxlan: Depend on CONFIG_INET
sfc: Fix the reported priorities of different filter types
sfc: Remove EFX_FILTER_FLAG_RX_OVERRIDE_IP
sfc: Fix loopback self-test with separate_tx_channels=1
sfc: Fix MCDI structure field lookup
sfc: Add parentheses around use of bitfield macro arguments
sfc: Fix null function pointer in efx_sriov_channel_type
vxlan: virtual extensible lan
igmp: export symbol ip_mc_leave_group
netlink: add attributes to fdb interface
tg3: unconditionally select HWMON support when tg3 is enabled.
Revert "net: ti cpsw ethernet: allow reading phy interface mode from DT"
gre: fix sparse warning
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This is an implementation of Virtual eXtensible Local Area Network
as described in draft RFC:
http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-02
The driver integrates a Virtual Tunnel Endpoint (VTEP) functionality
that learns MAC to IP address mapping.
This implementation has not been tested only against the Linux
userspace implementation using TAP, not against other vendor's
equipment.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Later changes need to be able to refer to neighbour attributes
when doing fdb_add.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the rtnl_link_ops changelink and fill_info callbacks, through
which the admin can now set/get the driver mode, etc policies.
Maintain the proprietary sysfs entries only for legacy childs.
For child devices, set dev->iflink to point to the parent
device ifindex, such that user space tools can now correctly
show the uplink relation as done for vlan, macvlan, etc
devices. Pointed out by Patrick McHardy <kaber@trash.net>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
John W. Linville says:
====================
Here is another batch of updates intended for 3.7...
Highlights include an hci_connect re-write in Bluetooth, HCI/LLC
layer separation in NFC, removal of the raw pn544 NFC driver, NFC LLCP
raw sockets support, improved IBSS auth frame handling in mac80211,
full-MAC AP mode notification support in mac80211, a lot of attention
paid to brcmfmac, and the usual level of updates to iwlwifi, ath9k,
mwifiex, and rt2x00, and various other updates.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Conflicts:
net/nfc/netlink.c
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This adds support for socket of type SOCK_RAW to LLCP.
sk_buff are copied and sent to raw sockets with a 2 bytes extra header:
The first byte header contains the nfc adapter index.
The second one contains flags:
- 0x01 - Direction (0=RX, 1=TX)
- 0x02-0x80 - Reserved
A raw socket has to be explicitly bound to a nfc adapter. This is achieved
by specifying the adapter index to be bound to in the dev_idx field of the
sockaddr_nfc_llcp struct passed to bind().
Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
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In AP mode, when a station requests connection to an AP and if the
request is failed for particular reason, userspace is notified about the
failure through NL80211_CMD_CONN_FAILED command. Reason for the failure
is sent through the attribute NL80211_ATTR_CONN_FAILED_REASON.
Signed-off-by: Pandiyarajan Pitchaimuthu <c_ppitch@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
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There are a number of functions that shouldn't really
be used when modern functions that take the band are
available in cfg80211. Remove these, but for now keep
* ieee80211_freq_to_dsss_chan and
* ieee80211_dsss_chan_to_freq
as they're used in older drivers.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
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Conflicts:
drivers/net/team/team.c
drivers/net/usb/qmi_wwan.c
net/batman-adv/bat_iv_ogm.c
net/ipv4/fib_frontend.c
net/ipv4/route.c
net/l2tp/l2tp_netlink.c
The team, fib_frontend, route, and l2tp_netlink conflicts were simply
overlapping changes.
qmi_wwan and bat_iv_ogm were of the "use HEAD" variety.
With help from Antonio Quartulli.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove two holes on 64bit arches, and put dev_list at the end of
napi_struct since its not used in fast path.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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SKF_AD_ALU_XOR_X has been added a while ago, but as an 'ancillary'
operation that is invoked through a negative offset in K within BPF
load operations. Since BPF_MOD has recently been added, BPF_XOR should
also be part of the common ALU operations. Removing SKF_AD_ALU_XOR_X
might not be an option since this is exposed to user space.
Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We currently use a per socket order-0 page cache for tcp_sendmsg()
operations.
This page is used to build fragments for skbs.
Its done to increase probability of coalescing small write() into
single segments in skbs still in write queue (not yet sent)
But it wastes a lot of memory for applications handling many mostly
idle sockets, since each socket holds one page in sk->sk_sndmsg_page
Its also quite inefficient to build TSO 64KB packets, because we need
about 16 pages per skb on arches where PAGE_SIZE = 4096, so we hit
page allocator more than wanted.
This patch adds a per task frag allocator and uses bigger pages,
if available. An automatic fallback is done in case of memory pressure.
(up to 32768 bytes per frag, thats order-3 pages on x86)
This increases TCP stream performance by 20% on loopback device,
but also benefits on other network devices, since 8x less frags are
mapped on transmit and unmapped on tx completion. Alexander Duyck
mentioned a probable performance win on systems with IOMMU enabled.
Its possible some SG enabled hardware cant cope with bigger fragments,
but their ndo_start_xmit() should already handle this, splitting a
fragment in sub fragments, since some arches have PAGE_SIZE=65536
Successfully tested on various ethernet devices.
(ixgbe, igb, bnx2x, tg3, mellanox mlx4)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Cc: Vijay Subramanian <subramanian.vijay@gmail.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Vijay Subramanian <subramanian.vijay@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pablo Neira Ayuso says:
====================
This patchset contains updates for your net-next tree, they are:
* Mostly fixes for the recently pushed IPv6 NAT support:
- Fix crash while removing nf_nat modules from Patrick McHardy.
- Fix unbalanced rcu_read_unlock from Ulrich Weber.
- Merge NETMAP and REDIRECT into one single xt_target module, from
Jan Engelhardt.
- Fix Kconfig for IPv6 NAT, which allows inconsistent configurations,
from myself.
* Updates for ipset, all of the from Jozsef Kadlecsik:
- Add the new "nomatch" option to obtain reverse set matching.
- Support for /0 CIDR in hash:net,iface set type.
- One non-critical fix for a rare crash due to pass really
wrong configuration parameters.
- Coding style cleanups.
- Sparse fixes.
- Add set revision supported via modinfo.i
* One extension for the xt_time match, to support matching during
the transition between two days with one single rule, from
Florian Westphal.
* Fix maximum packet length supported by nfnetlink_queue and add
NFQA_CAP_LEN attribute, from myself.
You can notice that this batch contains a couple of fixes that may
go to 3.6-rc but I don't consider them critical to push them:
* The ipset fix for the /0 cidr case, which is triggered with one
inconsistent command line invocation of ipset.
* The nfnetlink_queue maximum packet length supported since it requires
the new NFQA_CAP_LEN attribute to provide a full workaround for the
described problem.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds the NFQA_CAP_LEN attribute that allows us to know
what is the real packet size from user-space (even if we decided
to retrieve just a few bytes from the packet instead of all of it).
Security software that inspects packets should always check for
this new attribute to make sure that it is inspecting the entire
packet.
This also helps to provide a workaround for the problem described
in: http://marc.info/?l=netfilter-devel&m=134519473212536&w=2
Original idea from Florian Westphal.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch allows the FTP helper to pickup the sequence tracking from
the first packet seen. This is useful to fix the breakage of the first
FTP command after the failover while using conntrackd to synchronize
states.
The seq_aft_nl_num field in struct nf_ct_ftp_info has been shrinked to
16-bits (enough for what it does), so we can use the remaining 16-bits
to store the flags while using the same size for the private FTP helper
data.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Currently, if you want to do something like:
"match Monday, starting 23:00, for two hours"
You need two rules, one for Mon 23:00 to 0:00 and one for Tue 0:00-1:00.
The rule: --weekdays Mo --timestart 23:00 --timestop 01:00
looks correct, but it will first match on monday from midnight to 1 a.m.
and then again for another hour from 23:00 onwards.
This permits userspace to explicitly ignore the day transition and
match for a single, continuous time period instead.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Exceptions can now be matched and we can branch according to the
possible cases:
a. match in the set if the element is not flagged as "nomatch"
b. match in the set if the element is flagged with "nomatch"
c. no match
i.e.
iptables ... -m set --match-set ... -j ...
iptables ... -m set --match-set ... --nomatch-entries -j ...
...
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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Suggested by Jan Engelhardt.
Signed-off-by: David S. Miller <davem@davemloft.net>
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There has been some confusion among PHC driver authors about the
intended purpose of the clock_name attribute. This patch expands the
documation in order to clarify how the clock_name field should be
understood.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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PTP Hardware Clock devices appear as class devices in sysfs. This patch
changes the registration API to use the parent device, clarifying the
clock's relationship to the underlying device.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since (9f00d97 netlink: hide struct module parameter in netlink_kernel_create),
linux/netlink.h includes linux/module.h because of the use of THIS_MODULE.
Use linux/export.h instead, as suggested by Stephen Rothwell, which is
significantly smaller and defines THIS_MODULES.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Acked-by: H.K. Jerry Chu <hkchu@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add rtnl_link_ops to IPoIB, with the first usage being child device
create/delete through them. Childs devices are now either legacy ones,
created/deleted through the ipoib sysfs entries, or RTNL ones.
Adding support for RTNL childs involved refactoring of ipoib_vlan_add
which is now used by both the sysfs and the link_ops code.
Also, added ndo_uninit entry to support calling unregister_netdevice_queue
from the rtnl dellink entry. This required removal of calls to
ipoib_dev_cleanup from the driver in flows which use unregister_netdevice,
since the networking core will invoke ipoib_uninit which does exactly that.
Signed-off-by: Erez Shitrit <erezsh@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc-next
Ben Hutchings says:
====================
1. Extension to PPS/PTP to allow for PHC devices where pulses are
subject to a variable but measurable delay.
2. PPS/PTP/PHC support for Solarflare boards with a timestamping
peripheral.
3. MTD support for updating the timestamping peripheral on those boards.
4. Fix for potential over-length requests to firmware.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Initial version by Stuart Hodgson <smhodgson@solarflare.com>
Some PHC device drivers may deliver PPS events with a significant
and variable delay, but still be able to measure precisely what
that delay is.
Add a pps_sub_ts() function for subtracting a delay from the
timestamp(s) in a PPS event, and a PTP event type (PTP_CLOCK_PPSUSR)
for which the caller provides a complete PPS event.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
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In netpoll tx path, we miss the chance of calling ->ndo_select_queue(),
thus could cause problems when bonding is involved.
This patch makes dev_pick_tx() extern (and rename it to netdev_pick_tx())
to let netpoll call it in netpoll_send_skb_on_dev().
Reported-by: Sylvain Munaut <s.munaut@whatever-company.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Tested-by: Sylvain Munaut <s.munaut@whatever-company.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The internal functions for add/deleting addresses don't change
their argument.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
net/netfilter/nfnetlink_log.c
net/netfilter/xt_LOG.c
Rather easy conflict resolution, the 'net' tree had bug fixes to make
sure we checked if a socket is a time-wait one or not and elide the
logging code if so.
Whereas on the 'net-next' side we are calculating the UID and GID from
the creds using different interfaces due to the user namespace changes
from Eric Biederman.
Signed-off-by: David S. Miller <davem@davemloft.net>
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a lot of code has either the memset or an inefficient copy
from a static array that contains the all-zeros Ethernet address.
Introduce help function eth_zero_addr() to fill an address with
all zeros, making the code clearer and allowing us to get rid of
some constant arrays.
Signed-off-by: Duan Jiong <djduanjiong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a new ALU opcode, to compute a modulus.
Commit ffe06c17afbbb used an ancillary to implement XOR_X,
but here we reserve one of the available ALU opcode to implement both
MOD_X and MOD_K
Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: George Bakos <gbakos@alpinista.org>
Cc: Jay Schulist <jschlst@samba.org>
Cc: Jiri Pirko <jpirko@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is a frequent mistake to confuse the netlink port identifier with a
process identifier. Try to reduce this confusion by renaming fields
that hold port identifiers portid instead of pid.
I have carefully avoided changing the structures exported to
userspace to avoid changing the userspace API.
I have successfully built an allyesconfig kernel with this change.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch defines netlink_kernel_create as a wrapper function of
__netlink_kernel_create to hide the struct module *me parameter
(which seems to be THIS_MODULE in all existing netlink subsystems).
Suggested by David S. Miller.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace netlink_set_nonroot by one new field `flags' in
struct netlink_kernel_cfg that is passed to netlink_kernel_create.
This patch also renames NL_NONROOT_* to NL_CFG_F_NONROOT_* since
now the flags field in nl_table is generic (so we can add more
flags if needed in the future).
Also adjust all callers in the net-next tree to use these flags
instead of netlink_set_nonroot.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Passing uids and gids on NETLINK_CB from a process in one user
namespace to a process in another user namespace can result in the
wrong uid or gid being presented to userspace. Avoid that problem by
passing kuids and kgids instead.
- define struct scm_creds for use in scm_cookie and netlink_skb_parms
that holds uid and gid information in kuid_t and kgid_t.
- Modify scm_set_cred to fill out scm_creds by heand instead of using
cred_to_ucred to fill out struct ucred. This conversion ensures
userspace does not get incorrect uid or gid values to look at.
- Modify scm_recv to convert from struct scm_creds to struct ucred
before copying credential values to userspace.
- Modify __scm_send to populate struct scm_creds on in the scm_cookie,
instead of just copying struct ucred from userspace.
- Modify netlink_sendmsg to copy scm_creds instead of struct ucred
into the NETLINK_CB.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It seems we need to provide ability for stacked devices
to use specific lock_class_key for sch->busylock
We could instead default l2tpeth tx_queue_len to 0 (no qdisc), but
a user might use a qdisc anyway.
(So same fixes are probably needed on non LLTX stacked drivers)
Noticed while stressing L2TPV3 setup :
======================================================
[ INFO: possible circular locking dependency detected ]
3.6.0-rc3+ #788 Not tainted
-------------------------------------------------------
netperf/4660 is trying to acquire lock:
(l2tpsock){+.-...}, at: [<ffffffffa0208db2>] l2tp_xmit_skb+0x172/0xa50 [l2tp_core]
but task is already holding lock:
(&(&sch->busylock)->rlock){+.-...}, at: [<ffffffff81596595>] dev_queue_xmit+0xd75/0xe00
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&(&sch->busylock)->rlock){+.-...}:
[<ffffffff810a5df0>] lock_acquire+0x90/0x200
[<ffffffff817499fc>] _raw_spin_lock_irqsave+0x4c/0x60
[<ffffffff81074872>] __wake_up+0x32/0x70
[<ffffffff8136d39e>] tty_wakeup+0x3e/0x80
[<ffffffff81378fb3>] pty_write+0x73/0x80
[<ffffffff8136cb4c>] tty_put_char+0x3c/0x40
[<ffffffff813722b2>] process_echoes+0x142/0x330
[<ffffffff813742ab>] n_tty_receive_buf+0x8fb/0x1230
[<ffffffff813777b2>] flush_to_ldisc+0x142/0x1c0
[<ffffffff81062818>] process_one_work+0x198/0x760
[<ffffffff81063236>] worker_thread+0x186/0x4b0
[<ffffffff810694d3>] kthread+0x93/0xa0
[<ffffffff81753e24>] kernel_thread_helper+0x4/0x10
-> #0 (l2tpsock){+.-...}:
[<ffffffff810a5288>] __lock_acquire+0x1628/0x1b10
[<ffffffff810a5df0>] lock_acquire+0x90/0x200
[<ffffffff817498c1>] _raw_spin_lock+0x41/0x50
[<ffffffffa0208db2>] l2tp_xmit_skb+0x172/0xa50 [l2tp_core]
[<ffffffffa021a802>] l2tp_eth_dev_xmit+0x32/0x60 [l2tp_eth]
[<ffffffff815952b2>] dev_hard_start_xmit+0x502/0xa70
[<ffffffff815b63ce>] sch_direct_xmit+0xfe/0x290
[<ffffffff81595a05>] dev_queue_xmit+0x1e5/0xe00
[<ffffffff815d9d60>] ip_finish_output+0x3d0/0x890
[<ffffffff815db019>] ip_output+0x59/0xf0
[<ffffffff815da36d>] ip_local_out+0x2d/0xa0
[<ffffffff815da5a3>] ip_queue_xmit+0x1c3/0x680
[<ffffffff815f4192>] tcp_transmit_skb+0x402/0xa60
[<ffffffff815f4a94>] tcp_write_xmit+0x1f4/0xa30
[<ffffffff815f5300>] tcp_push_one+0x30/0x40
[<ffffffff815e6672>] tcp_sendmsg+0xe82/0x1040
[<ffffffff81614495>] inet_sendmsg+0x125/0x230
[<ffffffff81576cdc>] sock_sendmsg+0xdc/0xf0
[<ffffffff81579ece>] sys_sendto+0xfe/0x130
[<ffffffff81752c92>] system_call_fastpath+0x16/0x1b
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&(&sch->busylock)->rlock);
lock(l2tpsock);
lock(&(&sch->busylock)->rlock);
lock(l2tpsock);
*** DEADLOCK ***
5 locks held by netperf/4660:
#0: (sk_lock-AF_INET){+.+.+.}, at: [<ffffffff815e581c>] tcp_sendmsg+0x2c/0x1040
#1: (rcu_read_lock){.+.+..}, at: [<ffffffff815da3e0>] ip_queue_xmit+0x0/0x680
#2: (rcu_read_lock_bh){.+....}, at: [<ffffffff815d9ac5>] ip_finish_output+0x135/0x890
#3: (rcu_read_lock_bh){.+....}, at: [<ffffffff81595820>] dev_queue_xmit+0x0/0xe00
#4: (&(&sch->busylock)->rlock){+.-...}, at: [<ffffffff81596595>] dev_queue_xmit+0xd75/0xe00
stack backtrace:
Pid: 4660, comm: netperf Not tainted 3.6.0-rc3+ #788
Call Trace:
[<ffffffff8173dbf8>] print_circular_bug+0x1fb/0x20c
[<ffffffff810a5288>] __lock_acquire+0x1628/0x1b10
[<ffffffff810a334b>] ? check_usage+0x9b/0x4d0
[<ffffffff810a3f44>] ? __lock_acquire+0x2e4/0x1b10
[<ffffffff810a5df0>] lock_acquire+0x90/0x200
[<ffffffffa0208db2>] ? l2tp_xmit_skb+0x172/0xa50 [l2tp_core]
[<ffffffff817498c1>] _raw_spin_lock+0x41/0x50
[<ffffffffa0208db2>] ? l2tp_xmit_skb+0x172/0xa50 [l2tp_core]
[<ffffffffa0208db2>] l2tp_xmit_skb+0x172/0xa50 [l2tp_core]
[<ffffffffa021a802>] l2tp_eth_dev_xmit+0x32/0x60 [l2tp_eth]
[<ffffffff815952b2>] dev_hard_start_xmit+0x502/0xa70
[<ffffffff81594e0e>] ? dev_hard_start_xmit+0x5e/0xa70
[<ffffffff81595961>] ? dev_queue_xmit+0x141/0xe00
[<ffffffff815b63ce>] sch_direct_xmit+0xfe/0x290
[<ffffffff81595a05>] dev_queue_xmit+0x1e5/0xe00
[<ffffffff81595820>] ? dev_hard_start_xmit+0xa70/0xa70
[<ffffffff815d9d60>] ip_finish_output+0x3d0/0x890
[<ffffffff815d9ac5>] ? ip_finish_output+0x135/0x890
[<ffffffff815db019>] ip_output+0x59/0xf0
[<ffffffff815da36d>] ip_local_out+0x2d/0xa0
[<ffffffff815da5a3>] ip_queue_xmit+0x1c3/0x680
[<ffffffff815da3e0>] ? ip_local_out+0xa0/0xa0
[<ffffffff815f4192>] tcp_transmit_skb+0x402/0xa60
[<ffffffff815fa25e>] ? tcp_md5_do_lookup+0x18e/0x1a0
[<ffffffff815f4a94>] tcp_write_xmit+0x1f4/0xa30
[<ffffffff815f5300>] tcp_push_one+0x30/0x40
[<ffffffff815e6672>] tcp_sendmsg+0xe82/0x1040
[<ffffffff81614495>] inet_sendmsg+0x125/0x230
[<ffffffff81614370>] ? inet_create+0x6b0/0x6b0
[<ffffffff8157e6e2>] ? sock_update_classid+0xc2/0x3b0
[<ffffffff8157e750>] ? sock_update_classid+0x130/0x3b0
[<ffffffff81576cdc>] sock_sendmsg+0xdc/0xf0
[<ffffffff81162579>] ? fget_light+0x3f9/0x4f0
[<ffffffff81579ece>] sys_sendto+0xfe/0x130
[<ffffffff810a69ad>] ? trace_hardirqs_on+0xd/0x10
[<ffffffff8174a0b0>] ? _raw_spin_unlock_irq+0x30/0x50
[<ffffffff810757e3>] ? finish_task_switch+0x83/0xf0
[<ffffffff810757a6>] ? finish_task_switch+0x46/0xf0
[<ffffffff81752cb7>] ? sysret_check+0x1b/0x56
[<ffffffff81752c92>] system_call_fastpath+0x16/0x1b
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for genl "tcp_metrics". No locking
is changed, only that now we can unlink and delete
entries after grace period. We implement get/del for
single entry and dump to support show/flush filtering
in user space. Del without address attribute causes
flush for all addresses, sadly under genl_mutex.
v2:
- remove rcu_assign_pointer as suggested by Eric Dumazet,
it is not needed because there are no other writes under lock
- move the flushing code in tcp_metrics_flush_all
v3:
- remove synchronize_rcu on flush as suggested by Eric Dumazet
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This merges (3f509c6 netfilter: nf_nat_sip: fix incorrect handling
of EBUSY for RTCP expectation) to Patrick McHardy's IPv6 NAT changes.
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This patch adds all the necessary data structure and support
functions to implement TFO server side. It also documents a number
of flags for the sysctl_tcp_fastopen knob, and adds a few Linux
extension MIBs.
In addition, it includes the following:
1. a new TCP_FASTOPEN socket option an application must call to
supply a max backlog allowed in order to enable TFO on its listener.
2. A number of key data structures:
"fastopen_rsk" in tcp_sock - for a big socket to access its
request_sock for retransmission and ack processing purpose. It is
non-NULL iff 3WHS not completed.
"fastopenq" in request_sock_queue - points to a per Fast Open
listener data structure "fastopen_queue" to keep track of qlen (# of
outstanding Fast Open requests) and max_qlen, among other things.
"listener" in tcp_request_sock - to point to the original listener
for book-keeping purpose, i.e., to maintain qlen against max_qlen
as part of defense against IP spoofing attack.
3. various data structure and functions, many in tcp_fastopen.c, to
support server side Fast Open cookie operations, including
/proc/sys/net/ipv4/tcp_fastopen_key to allow manual rekeying.
Signed-off-by: H.K. Jerry Chu <hkchu@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch removes bus_id from mdio platform data, The reason to remove
bus_id is, stmmac mdio bus_id is always same as stmmac bus-id, so there
is no point in passing this in different variable.
Also stmmac ethernet driver connects to phy with bus_id passed its
platform data.
So, having single bus-id is much simpler.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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