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Connection creation with SMC-R starts through an internal
TCP-connection. The Ethernet interface for this TCP-connection is not
restricted to the Ethernet interface of a RoCE device. Any existing
Ethernet interface belonging to the same physical net can be used, as
long as there is a defined relation between the Ethernet interface and
some RoCE devices. This relation is defined with the help of an
identification string called "Physical Net ID" or short "pnet ID".
Information about defined pnet IDs and their related Ethernet
interfaces and RoCE devices is stored in the SMC-R pnet table.
A pnet table entry consists of the identifying pnet ID and the
associated network and IB device.
This patch adds pnet table configuration support using the
generic netlink message interface referring to network and IB device
by their names. Commands exist to add, delete, and display pnet table
entries, and to flush or display the entire pnet table.
There are cross-checks to verify whether the ethernet interfaces
or infiniband devices really exist in the system. If either device
is not available, the pnet ID entry is not created.
Loss of network devices and IB devices is also monitored;
a pnet ID entry is removed when an associated network or
IB device is removed.
Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* enable smc module loading and unloading
* register new socket family
* basic smc socket creation and deletion
* use backing TCP socket to run CLC (Connection Layer Control)
handshake of SMC protocol
* Setup for infiniband traffic is implemented in follow-on patches.
For now fallback to TCP socket is always used.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Direct call of tcp_set_keepalive() function from protocol-agnostic
sock_setsockopt() function in net/core/sock.c violates network
layering. And newly introduced protocol (SMC-R) will need its own
keepalive function. Therefore, add "keepalive" function pointer
to "struct proto", and call it from sock_setsockopt() via this pointer.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'rxrpc-rewrite-20170109' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
afs: Refcount afs_call struct
These patches provide some tracepoints for AFS and fix a potential leak by
adding refcounting to the afs_call struct.
The patches are:
(1) Add some tracepoints for logging incoming calls and monitoring
notifications from AF_RXRPC and data reception.
(2) Get rid of afs_wait_mode as it didn't turn out to be as useful as
initially expected. It can be brought back later if needed. This
clears some stuff out that I don't then need to fix up in (4).
(3) Allow listen(..., 0) to be used to disable listening. This makes
shutting down the AFS cache manager server in the kernel much easier
and the accounting simpler as we can then be sure that (a) all
preallocated afs_call structs are relesed and (b) no new incoming
calls are going to be started.
For the moment, listening cannot be reenabled.
(4) Add refcounting to the afs_call struct to fix a potential multiple
release detected by static checking and add a tracepoint to follow the
lifecycle of afs_call objects.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that we have properly encapsulated and made drivers utilize exported
functions, we can switch dsa_switch_ops to be a annotated with const.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation for making struct dsa_switch_ops const, encapsulate it
within a dsa_switch_driver which has a list pointer and a pointer to
dsa_switch_ops. This allows us to take the list_head pointer out of
dsa_switch_ops, which is written to by {un,}register_switch_driver.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch moves stmmac_clk, pclk, clk_ptp_ref and stmmac_rst to the
plat_stmmacenet_data structure. It also moves these platform variables
initialization to stmmac_platform. This was done for two reasons:
a) If PCI is used, platform related code is being executed in stmmac_main
resulting in warnings that have no sense and conceptually was not right
b) stmmac as a synopsys reference ethernet driver stack will be hosting
more and more drivers to its structure like synopsys/dwc_eth_qos.c.
These drivers have their own DT bindings that are not compatible with
stmmac's. One of the most important are the clock names, and so they need
to be parsed in the glue logic and initialized there, and that is the main
reason why the clocks were passed to the platform structure.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Reviewed-by: Lars Persson <larper@axis.com>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a new parameter to the stmmac DT: snps,en-tx-lpi-clockgating.
It was ported from synopsys/dwc_eth_qos.c and it is useful if lpi tx clock
gating is needed by stmmac users also.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Reviewed-by: Lars Persson <larper@axis.com>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
modify act_csum to compute crc32c on IPv4/IPv6 packets having SCTP in
their payload, and extend UAPI definitions accordingly.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
HalfSipHash, or hsiphash, is a shortened version of SipHash, which
generates 32-bit outputs using a weaker 64-bit key. It has *much* lower
security margins, and shouldn't be used for anything too sensitive, but
it could be used as a hashtable key function replacement, if the output
is never exposed, and if the security requirement is not too high.
The goal is to make this something that performance-critical jhash users
would be willing to use.
On 64-bit machines, HalfSipHash1-3 is slower than SipHash1-3, so we alias
SipHash1-3 to HalfSipHash1-3 on those systems.
64-bit x86_64:
[ 0.509409] test_siphash: SipHash2-4 cycles: 4049181
[ 0.510650] test_siphash: SipHash1-3 cycles: 2512884
[ 0.512205] test_siphash: HalfSipHash1-3 cycles: 3429920
[ 0.512904] test_siphash: JenkinsHash cycles: 978267
So, we map hsiphash() -> SipHash1-3
32-bit x86:
[ 0.509868] test_siphash: SipHash2-4 cycles: 14812892
[ 0.513601] test_siphash: SipHash1-3 cycles: 9510710
[ 0.515263] test_siphash: HalfSipHash1-3 cycles: 3856157
[ 0.515952] test_siphash: JenkinsHash cycles: 1148567
So, we map hsiphash() -> HalfSipHash1-3
hsiphash() is roughly 3 times slower than jhash(), but comes with a
considerable security improvement.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
SipHash is a 64-bit keyed hash function that is actually a
cryptographically secure PRF, like HMAC. Except SipHash is super fast,
and is meant to be used as a hashtable keyed lookup function, or as a
general PRF for short input use cases, such as sequence numbers or RNG
chaining.
For the first usage:
There are a variety of attacks known as "hashtable poisoning" in which an
attacker forms some data such that the hash of that data will be the
same, and then preceeds to fill up all entries of a hashbucket. This is
a realistic and well-known denial-of-service vector. Currently
hashtables use jhash, which is fast but not secure, and some kind of
rotating key scheme (or none at all, which isn't good). SipHash is meant
as a replacement for jhash in these cases.
There are a modicum of places in the kernel that are vulnerable to
hashtable poisoning attacks, either via userspace vectors or network
vectors, and there's not a reliable mechanism inside the kernel at the
moment to fix it. The first step toward fixing these issues is actually
getting a secure primitive into the kernel for developers to use. Then
we can, bit by bit, port things over to it as deemed appropriate.
While SipHash is extremely fast for a cryptographically secure function,
it is likely a bit slower than the insecure jhash, and so replacements
will be evaluated on a case-by-case basis based on whether or not the
difference in speed is negligible and whether or not the current jhash usage
poses a real security risk.
For the second usage:
A few places in the kernel are using MD5 or SHA1 for creating secure
sequence numbers, syn cookies, port numbers, or fast random numbers.
SipHash is a faster and more fitting, and more secure replacement for MD5
in those situations. Replacing MD5 and SHA1 with SipHash for these uses is
obvious and straight-forward, and so is submitted along with this patch
series. There shouldn't be much of a debate over its efficacy.
Dozens of languages are already using this internally for their hash
tables and PRFs. Some of the BSDs already use this in their kernels.
SipHash is a widely known high-speed solution to a widely known set of
problems, and it's time we catch-up.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: David Laight <David.Laight@aculab.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A static checker warning occurs in the AFS filesystem:
fs/afs/cmservice.c:155 SRXAFSCB_CallBack()
error: dereferencing freed memory 'call'
due to the reply being sent before we access the server it points to. The
act of sending the reply causes the call to be freed if an error occurs
(but not if it doesn't).
On top of this, the lifetime handling of afs_call structs is fragile
because they get passed around through workqueues without any sort of
refcounting.
Deal with the issues by:
(1) Fix the maybe/maybe not nature of the reply sending functions with
regards to whether they release the call struct.
(2) Refcount the afs_call struct and sort out places that need to get/put
references.
(3) Pass a ref through the work queue and release (or pass on) that ref in
the work function. Care has to be taken because a work queue may
already own a ref to the call.
(4) Do the cleaning up in the put function only.
(5) Simplify module cleanup by always incrementing afs_outstanding_calls
whenever a call is allocated.
(6) Set the backlog to 0 with kernel_listen() at the beginning of the
process of closing the socket to prevent new incoming calls from
occurring and to remove the contribution of preallocated calls from
afs_outstanding_calls before we wait on it.
A tracepoint is also added to monitor the afs_call refcount and lifetime.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Fixes: 08e0e7c82eea: "[AF_RXRPC]: Make the in-kernel AFS filesystem use AF_RXRPC."
Add three tracepoints to the AFS filesystem:
(1) The afs_recv_data tracepoint logs data segments that are extracted
from the data received from the peer through afs_extract_data().
(2) The afs_notify_call tracepoint logs notification from AF_RXRPC of data
coming in to an asynchronous call.
(3) The afs_cb_call tracepoint logs incoming calls that have had their
operation ID extracted and mapped into a supported cache manager
service call.
To make (3) work, the name strings in the afs_call_type struct objects have
to be annotated with __tracepoint_string. This is done with the CM_NAME()
macro.
Further, the AFS call state enum needs a name so that it can be used to
declare parameter types.
Signed-off-by: David Howells <dhowells@redhat.com>
The tc_from field fulfills two roles. It encodes whether a packet was
redirected by an act_mirred device and, if so, whether act_mirred was
called on ingress or egress. Split it into separate fields.
The information is needed by the special IFB loop, where packets are
taken out of the normal path by act_mirred, forwarded to IFB, then
reinjected at their original location (ingress or egress) by IFB.
The IFB device cannot use skb->tc_at_ingress, because that may have
been overwritten as the packet travels from act_mirred to ifb_xmit,
when it passes through tc_classify on the IFB egress path. Cache this
value in skb->tc_from_ingress.
That field is valid only if a packet arriving at ifb_xmit came from
act_mirred. Other packets can be crafted to reach ifb_xmit. These
must be dropped. Set tc_redirected on redirection and drop all packets
that do not have this bit set.
Both fields are set only on cloned skbs in tc actions, so original
packet sources do not have to clear the bit when reusing packets
(notably, pktgen and octeon).
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Field tc_at is used only within tc actions to distinguish ingress from
egress processing. A single bit is sufficient for this purpose.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Extract the remaining two fields from tc_verd and remove the __u16
completely. TC_AT and TC_FROM are converted to equivalent two-bit
integer fields tc_at and tc_from. Where possible, use existing
helper skb_at_tc_ingress when reading tc_at. Introduce helper
skb_reset_tc to clear fields.
Not documenting tc_from and tc_at, because they will be replaced
with single bit fields in follow-on patches.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Packets sent by the IFB device skip subsequent tc classification.
A single bit governs this state. Move it out of tc_verd in
anticipation of removing that __u16 completely.
The new bitfield tc_skip_classify temporarily uses one bit of a
hole, until tc_verd is removed completely in a follow-up patch.
Remove the bit hole comment. It could be 2, 3, 4 or 5 bits long.
With that many options, little value in documenting it.
Introduce a helper function to deduplicate the logic in the two
sites that check this bit.
The field tc_skip_classify is set only in IFB on skbs cloned in
act_mirred, so original packet sources do not have to clear the
bit when reusing packets (notably, pktgen and octeon).
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This field is no longer kept in tc_verd. Remove it from the global
definition of that struct.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove the last reference to tc_verd's munge and redirect ttl bits.
These fields are no longer used.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The network device operation for reading statistics is only called
in one place, and it ignores the return value. Having a structure
return value is potentially confusing because some future driver could
incorrectly assume that the return value was used.
Fix all drivers with ndo_get_stats64 to have a void function.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ipmr_get_route has 1 caller and the nowait arg is 0. Remove the arg and
simplify ipmr_get_route accordingly.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Here are a bunch of USB fixes for 4.10-rc3. Yeah, it's a lot, an
artifact of the holiday break I think. Lots of gadget and the usual
XHCI fixups for reported issues (one day that driver will calm down...)
Also included are a bunch of usb-serial driver fixes, and for good
measure, a number of much-reported MUSB driver issues have finally been
resolved.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a bunch of USB fixes for 4.10-rc3. Yeah, it's a lot, an
artifact of the holiday break I think.
Lots of gadget and the usual XHCI fixups for reported issues (one day
that driver will calm down...) Also included are a bunch of usb-serial
driver fixes, and for good measure, a number of much-reported MUSB
driver issues have finally been resolved.
All of these have been in linux-next with no reported issues"
* tag 'usb-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (72 commits)
USB: fix problems with duplicate endpoint addresses
usb: ohci-at91: use descriptor-based gpio APIs correctly
usb: storage: unusual_uas: Add JMicron JMS56x to unusual device
usb: hub: Move hub_port_disable() to fix warning if PM is disabled
usb: musb: blackfin: add bfin_fifo_offset in bfin_ops
usb: musb: fix compilation warning on unused function
usb: musb: Fix trying to free already-free IRQ 4
usb: musb: dsps: implement clear_ep_rxintr() callback
usb: musb: core: add clear_ep_rxintr() to musb_platform_ops
USB: serial: ti_usb_3410_5052: fix NULL-deref at open
USB: serial: spcp8x5: fix NULL-deref at open
USB: serial: quatech2: fix sleep-while-atomic in close
USB: serial: pl2303: fix NULL-deref at open
USB: serial: oti6858: fix NULL-deref at open
USB: serial: omninet: fix NULL-derefs at open and disconnect
USB: serial: mos7840: fix misleading interrupt-URB comment
USB: serial: mos7840: remove unused write URB
USB: serial: mos7840: fix NULL-deref at open
USB: serial: mos7720: remove obsolete port initialisation
USB: serial: mos7720: fix parallel probe
...
Here are some staging and IIO driver fixes for 4.10-rc3.
Most of these are minor IIO fixes of reported issues, along with one
network driver fix to resolve an issue. And a MAINTAINERS update with a
new mailing list. All of these, except the MAINTAINERS file update,
have been in linux-next with no reported issues (the MAINTAINERS patch
happened on Friday...)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO fixes from Greg KH:
"Here are some staging and IIO driver fixes for 4.10-rc3.
Most of these are minor IIO fixes of reported issues, along with one
network driver fix to resolve an issue. And a MAINTAINERS update with
a new mailing list. All of these, except the MAINTAINERS file update,
have been in linux-next with no reported issues (the MAINTAINERS patch
happened on Friday...)"
* tag 'staging-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
MAINTAINERS: add greybus subsystem mailing list
staging: octeon: Call SET_NETDEV_DEV()
iio: accel: st_accel: fix LIS3LV02 reading and scaling
iio: common: st_sensors: fix channel data parsing
iio: max44000: correct value in illuminance_integration_time_available
iio: adc: TI_AM335X_ADC should depend on HAS_DMA
iio: bmi160: Fix time needed to sleep after command execution
iio: 104-quad-8: Fix active level mismatch for the preset enable option
iio: 104-quad-8: Fix off-by-one errors when addressing IOR
iio: 104-quad-8: Fix index control configuration
Several people report seeing warnings about inconsistent radix tree
nodes followed by crashes in the workingset code, which all looked like
use-after-free access from the shadow node shrinker.
Dave Jones managed to reproduce the issue with a debug patch applied,
which confirmed that the radix tree shrinking indeed frees shadow nodes
while they are still linked to the shadow LRU:
WARNING: CPU: 2 PID: 53 at lib/radix-tree.c:643 delete_node+0x1e4/0x200
CPU: 2 PID: 53 Comm: kswapd0 Not tainted 4.10.0-rc2-think+ #3
Call Trace:
delete_node+0x1e4/0x200
__radix_tree_delete_node+0xd/0x10
shadow_lru_isolate+0xe6/0x220
__list_lru_walk_one.isra.4+0x9b/0x190
list_lru_walk_one+0x23/0x30
scan_shadow_nodes+0x2e/0x40
shrink_slab.part.44+0x23d/0x5d0
shrink_node+0x22c/0x330
kswapd+0x392/0x8f0
This is the WARN_ON_ONCE(!list_empty(&node->private_list)) placed in the
inlined radix_tree_shrink().
The problem is with 14b468791fa9 ("mm: workingset: move shadow entry
tracking to radix tree exceptional tracking"), which passes an update
callback into the radix tree to link and unlink shadow leaf nodes when
tree entries change, but forgot to pass the callback when reclaiming a
shadow node.
While the reclaimed shadow node itself is unlinked by the shrinker, its
deletion from the tree can cause the left-most leaf node in the tree to
be shrunk. If that happens to be a shadow node as well, we don't unlink
it from the LRU as we should.
Consider this tree, where the s are shadow entries:
root->rnode
|
[0 n]
| |
[s ] [sssss]
Now the shadow node shrinker reclaims the rightmost leaf node through
the shadow node LRU:
root->rnode
|
[0 ]
|
[s ]
Because the parent of the deleted node is the first level below the
root and has only one child in the left-most slot, the intermediate
level is shrunk and the node containing the single shadow is put in
its place:
root->rnode
|
[s ]
The shrinker again sees a single left-most slot in a first level node
and thus decides to store the shadow in root->rnode directly and free
the node - which is a leaf node on the shadow node LRU.
root->rnode
|
s
Without the update callback, the freed node remains on the shadow LRU,
where it causes later shrinker runs to crash.
Pass the node updater callback into __radix_tree_delete_node() in case
the deletion causes the left-most branch in the tree to collapse too.
Also add warnings when linked nodes are freed right away, rather than
wait for the use-after-free when the list is scanned much later.
Fixes: 14b468791fa9 ("mm: workingset: move shadow entry tracking to radix tree exceptional tracking")
Reported-by: Dave Chinner <david@fromorbit.com>
Reported-by: Hugh Dickins <hughd@google.com>
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-and-tested-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Chris Leech <cleech@redhat.com>
Cc: Lee Duncan <lduncan@suse.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@linuxonhyperv.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Extract the eflag bits from the received desc and pass it down
the rx_hook chain to be available for netcp modules. Also the
psdata and epib data has to be inspected by the netcp modules.
So the desc can be freed only after returning from the rx_hook.
So move knav_pool_desc_put() after the rx_hook processing.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull kbuild fix from Michal Marek:
"The asm-prototypes.h file added in the last merge window results in
invalid code with CONFIG_KMEMCHECK=y. The net result is that genksyms
segfaults.
This pull request fixes the header, the genksyms fix is in my kbuild
branch for 4.11"
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
asm-prototypes: Clear any CPP defines before declaring the functions
sctp stream reconf, described in RFC 6525, needs a structure to
save per stream information in assoc, like stream state.
In the future, sctp stream scheduler also needs it to save some
stream scheduler params and queues.
This patchset is to prepare the stream array in assoc for stream
reconf. It defines sctp_stream that includes stream arrays inside
to replace ssnmap.
Note that we use different structures for IN and OUT streams, as
the members in per OUT stream will get more and more different
from per IN stream.
v1->v2:
- put these patches into a smaller group.
v2->v3:
- define sctp_stream to contain stream arrays, and create stream.c
to put stream-related functions.
- merge 3 patches into 1, as new sctp_stream has the same name
with before.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
fib_select_default has a single caller within the same file.
Make it static.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull swiotlb fixes from Konrad Rzeszutek Wilk:
"This has one fix to make i915 work when using Xen SWIOTLB, and a
feature from Geert to aid in debugging of devices that can't do DMA
outside the 32-bit address space.
The feature from Geert is on top of v4.10 merge window commit
(specifically you pulling my previous branch), as his changes were
dependent on the Documentation/ movement patches.
I figured it would just easier than me trying than to cherry-pick the
Documentation patches to satisfy git.
The patches have been soaking since 12/20, albeit I updated the last
patch due to linux-next catching an compiler error and adding an
Tested-and-Reported-by tag"
* 'stable/for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
swiotlb: Export swiotlb_max_segment to users
swiotlb: Add swiotlb=noforce debug option
swiotlb: Convert swiotlb_force from int to enum
x86, swiotlb: Simplify pci_swiotlb_detect_override()
So they can figure out what is the optimal number of pages
that can be contingously stitched together without fear of
bounce buffer.
We also expose an mechanism for sub-users of SWIOTLB API, such
as Xen-SWIOTLB to set the max segment value. And lastly
if swiotlb=force is set (which mandates we bounce buffer everything)
we set max_segment so at least we can bounce buffer one 4K page
instead of a giant 512KB one for which we may not have space.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reported-and-Tested-by: Juergen Gross <jgross@suse.com>
Pull audit fixes from Paul Moore:
"Two small fixes relating to audit's use of fsnotify.
The first patch plugs a leak and the second fixes some lock
shenanigans. The patches are small and I banged on this for an
afternoon with our testsuite and didn't see anything odd"
* 'stable-4.10' of git://git.infradead.org/users/pcmoore/audit:
audit: Fix sleep in atomic
fsnotify: Remove fsnotify_duplicate_mark()
Christmas break. Most of these are relatively unimportant fixes for
regressions introduced during the merge window, and about half of
the changes are for mach-omap2.
A couple of patches are just cleanups and dead code removal that I would
not normally have considered for merging after -rc2, but I decided to
take them along with the fixes this time.
Notable fixes include:
- removing the skeleton.dtsi include broke a number of machines, and we
have to put empty /chosen nodes back to be able to pass kernel command
lines as before
- enabling Samsung platforms no longer hardwires CONFIG_HZ to 200,
as it had been for no good reason for a long time.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"This is a rather large set of bugfixes, as we just returned from the
Christmas break. Most of these are relatively unimportant fixes for
regressions introduced during the merge window, and about half of the
changes are for mach-omap2.
A couple of patches are just cleanups and dead code removal that I
would not normally have considered for merging after -rc2, but I
decided to take them along with the fixes this time.
Notable fixes include:
- removing the skeleton.dtsi include broke a number of machines, and
we have to put empty /chosen nodes back to be able to pass kernel
command lines as before
- enabling Samsung platforms no longer hardwires CONFIG_HZ to 200, as
it had been for no good reason for a long time"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (46 commits)
MAINTAINERS: extend PSCI entry to cover the newly add PSCI checker code
drivers: psci: annotate timer on stack to silence odebug messages
ARM64: defconfig: enable DRM_MESON as module
ARM64: dts: meson-gx: Add Graphic Controller nodes
ARM64: dts: meson-gxl: fix GPIO include
ARM: dts: imx6: Disable "weim" node in the dtsi files
ARM: dts: qcom: apq8064: Add missing scm clock
ARM: davinci: da8xx: Fix sleeping function called from invalid context
ARM: davinci: Make __clk_{enable,disable} functions public
ARM: davinci: da850: don't add emac clock to lookup table twice
ARM: davinci: da850: fix infinite loop in clk_set_rate()
ARM: i.MX: remove map_io callback
ARM: dts: vf610-zii-dev-rev-b: Add missing newline
ARM: dts: imx6qdl-nitrogen6x: remove duplicate iomux entry
ARM: dts: imx31: fix AVIC base address
ARM: dts: am572x-idk: Add gpios property to control PCIE_RESETn
arm64: dts: vexpress: Support GICC_DIR operations
ARM: dts: vexpress: Support GICC_DIR operations
firmware: arm_scpi: fix reading sensor values on pre-1.0 SCPI firmwares
arm64: dts: msm8996: Add required memory carveouts
...
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Merge tag 'rxrpc-rewrite-20170105' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Update tracing and proc interfaces
This set of patches fixes and extends tracing:
(1) Fix the handling of enum-to-string translations so that external
tracing tools can make use of it by using TRACE_DEFINE_ENUM.
(2) Extend a couple of tracepoints to export some extra available
information and add three new tracepoints to allow monitoring of
received DATA packets, call disconnection and improper/implicit call
termination.
and adds a bit more procfs-exported information:
(3) Show a call's hard-ACK cursors in /proc/net/rxrpc_calls.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The asm-prototypes.h file is used to provide dummy function declarations
for genksyms, when processing asm files with EXPORT_SYMBOL. Make sure
that any architecture defines get out of our way. x86 currently has an
issue with memcpy on 64bit with CONFIG_KMEMCHECK=y and with
memset/__memset on 32bit:
$ cat init/test.c
#include <asm/asm-prototypes.h>
$ make -s init/test.o
In file included from ./arch/x86/include/asm/string.h:4:0,
from ./include/linux/string.h:18,
from ./include/linux/bitmap.h:8,
from ./include/linux/cpumask.h:11,
from ./arch/x86/include/asm/cpumask.h:4,
from ./arch/x86/include/asm/msr.h:10,
from ./arch/x86/include/asm/processor.h:20,
from ./arch/x86/include/asm/cpufeature.h:4,
from ./arch/x86/include/asm/thread_info.h:52,
from ./include/linux/thread_info.h:25,
from ./arch/x86/include/asm/preempt.h:6,
from ./include/linux/preempt.h:59,
from ./include/linux/spinlock.h:50,
from ./include/linux/seqlock.h:35,
from ./include/linux/time.h:5,
from ./include/uapi/linux/timex.h:56,
from ./include/linux/timex.h:56,
from ./include/linux/sched.h:19,
from ./include/linux/uaccess.h:4,
from ./arch/x86/include/asm/asm-prototypes.h:2,
from init/test.c:1:
./arch/x86/include/asm/string_64.h:52:47: error: expected declaration specifiers or ‘...’ before ‘(’ token
#define memcpy(dst, src, len) __inline_memcpy((dst), (src), (len))
./include/asm-generic/asm-prototypes.h:6:14: note: in expansion of macro ‘memcpy’
extern void *memcpy(void *, const void *, __kernel_size_t);
^
...
During real build, this manifests itself by genksyms segfaulting.
Fixes: 334bb7738764 ("x86/kbuild: enable modversions for symbols exported from asm")
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Cc: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Michal Marek <mmarek@suse.com>
Add the following extra tracing information:
(1) Modify the rxrpc_transmit tracepoint to record the Tx window size as
this is varied by the slow-start algorithm.
(2) Modify the rxrpc_rx_ack tracepoint to record more information from
received ACK packets.
(3) Add an rxrpc_rx_data tracepoint to record the information in DATA
packets.
(4) Add an rxrpc_disconnect_call tracepoint to record call disconnection,
including the reason the call was disconnected.
(5) Add an rxrpc_improper_term tracepoint to record implicit termination
of a call by a client either by starting a new call on a particular
connection channel without first transmitting the final ACK for the
previous call.
Signed-off-by: David Howells <dhowells@redhat.com>
Fix the way enum values are translated into strings in AF_RXRPC
tracepoints. The problem with just doing a lookup in a normal flat array
of strings or chars is that external tracing infrastructure can't find it.
Rather, TRACE_DEFINE_ENUM must be used.
Also sort the enums and string tables to make it easier to keep them in
order so that a future patch to __print_symbolic() can be optimised to try
a direct lookup into the table first before iterating over it.
A couple of _proto() macro calls are removed because they refered to tables
that got moved to the tracing infrastructure. The relevant data can be
found by way of tracing.
Signed-off-by: David Howells <dhowells@redhat.com>
Pull networking fixes from David Miller:
1) stmmac_drv_probe() can race with stmmac_open() because we register
the netdevice too early. Fix from Florian Fainelli.
2) UFO handling in __ip6_append_data() and ip6_finish_output() use
different tests for deciding whether a frame will be fragmented or
not, put them in sync. Fix from Zheng Li.
3) The rtnetlink getstats handlers need to validate that the netlink
request is large enough, fix from Mathias Krause.
4) Use after free in mlx4 driver, from Jack Morgenstein.
5) Fix setting of garbage UID value in sockets during setattr() calls,
from Eric Biggers.
6) Packet drop_monitor doesn't format the netlink messages properly
such that nlmsg_next fails to work, fix from Reiter Wolfgang.
7) Fix handling of wildcard addresses in l2tp lookups, from Guillaume
Nault.
8) __skb_flow_dissect() can crash on pptp packets, from Ian Kumlien.
9) IGMP code doesn't reset group query timers properly, from Michal
Tesar.
10) Fix overzealous MAIN/LOCAL route table combining in ipv4, from
Alexander Duyck.
11) vxlan offload check needs to be more strict in be2net driver, from
Sabrina Dubroca.
12) Moving l3mdev to packet hooks lost RX stat counters unintentionally,
fix from David Ahern.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits)
sh_eth: enable RX descriptor word 0 shift on SH7734
sfc: don't report RX hash keys to ethtool when RSS wasn't enabled
dpaa_eth: Initialize CGR structure before init
dpaa_eth: cleanup after init_phy() failure
net: systemport: Pad packet before inserting TSB
net: systemport: Utilize skb_put_padto()
LiquidIO VF: s/select/imply/ for PTP_1588_CLOCK
libcxgb: fix error check for ip6_route_output()
net: usb: asix_devices: add .reset_resume for USB PM
net: vrf: Add missing Rx counters
drop_monitor: consider inserted data in genlmsg_end
benet: stricter vxlan offloading check in be_features_check
ipv4: Do not allow MAIN to be alias for new LOCAL w/ custom rules
net: macb: Updated resource allocation function calls to new version of API.
net: stmmac: dwmac-oxnas: use generic pm implementation
net: stmmac: dwmac-oxnas: fix fixed-link-phydev leaks
net: stmmac: dwmac-oxnas: fix of-node leak
Documentation/networking: fix typo in mpls-sysctl
igmp: Make igmp group member RFC 3376 compliant
flow_dissector: Update pptp handling to avoid null pointer deref.
...
Lookup in the ATU can be performed starting from a given MAC
address. This is faster than starting with the first possible MAC
address and iterating all entries.
Entries are returned in numeric order. So if the MAC address returned
is bigger than what we are searching for, we know it is not in the
ATU.
Using the benchmark provided by Volodymyr Bendiuga
<volodymyr.bendiuga@gmail.com>,
https://www.spinics.net/lists/netdev/msg411550.html
on an Marvell Armada 370 RD, the test to add a number of static fdb
entries went from 1.616531 seconds to 0.312052 seconds.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
What appears to be a copy and paste error from the line above gets
the ioctl a ssize_t return value instead of the traditional "int".
The associated sample code used "long" which meant it would compile
for x86-64 but not i386, with the latter failing as follows:
CC [M] samples/vfio-mdev/mtty.o
samples/vfio-mdev/mtty.c:1418:20: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
.ioctl = mtty_ioctl,
^
samples/vfio-mdev/mtty.c:1418:20: note: (near initialization for ‘mdev_fops.ioctl’)
cc1: some warnings being treated as errors
Since in this case, vfio is working with struct file_operations; as such:
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
...and so here we just standardize on long vs. the normal int that user
space typically sees and documents as per "man ioctl" and similar.
Fixes: 9d1a546c53b4 ("docs: Sample driver to demonstrate how to use Mediated device framework.")
Cc: Kirti Wankhede <kwankhede@nvidia.com>
Cc: Neo Jia <cjia@nvidia.com>
Cc: kvm@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
sizeof(struct cmsghdr) and sizeof(struct compat_cmsghdr) already aligned.
remove use CMSG_ALIGN(sizeof(struct cmsghdr)) and
CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) keep code consistent.
Signed-off-by: yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull block layer fixes from Jens Axboe:
"A set of fixes for the current series, one fixing a regression with
block size < page cache size in the alias series from Jan. Outside of
that, two small cleanups for wbt from Bart, a nvme pull request from
Christoph, and a few small fixes of documentation updates"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: fix up io_poll documentation
block: Avoid that sparse complains about context imbalance in __wbt_wait()
block: Make wbt_wait() definition consistent with declaration
clean_bdev_aliases: Prevent cleaning blocks that are not in block range
genhd: remove dead and duplicated scsi code
block: add back plugging in __blkdev_direct_IO
nvmet/fcloop: remove some logically dead code performing redundant ret checks
nvmet: fix KATO offset in Set Features
nvme/fc: simplify error handling of nvme_fc_create_hw_io_queues
nvme/fc: correct some printk information
nvme/scsi: Remove START STOP emulation
nvme/pci: Delete misleading queue-wrap comment
nvme/pci: Fix whitespace problem
nvme: simplify stripe quirk
nvme: update maintainers information
to deal with various regressions noticed during the merge
window and to fix various device tree configurations for
boards. Also included is removal of mach-omap2/gpio.c that
is now dead code with device tree based booting that should
be OK for the early -rc cycle:
- A series of fixes to add empty chosen node to fix regressions
caused for bootloaders that don't create chosen node as the
decompressor needs the chosen node to merge command line and
ATAGs into it
- Fix missing logicpd-som-lv-37xx-devkit.dtb entry in Makefile
- Fix regression for am437x timers
- Fix wrong strcat for non-NULL terminated string
- A series of changes to fix tps65217 interrupts to not use
defines as we don't do that for interrupts
- Two patches to fix USB VBUS detection on am57xx-idk and force it
to peripheral mode until dwc3 role detection is working
- Add missing dra72-evm-tps65917 missing voltage supplies
accidentally left out of an earlier patch
- Fix n900 eMMC detection when booted on qemu
- Remove unwanted pr_err on failed memory allocation for
prm_common.c
- Remove legacy mach-omap2/gpio.c that now is dead code
since we boot mach-omap2 in device tree only mode
- Fix am572x-idk pcie1 by adding the missing gpio reset pin
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Merge tag 'omap-for-v4.10/fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Pull "omap fixes for v4.10-rc cycle" from Tony Lindgren:
Fist set of fixes for omaps for v4.10-rc cycle, mostly
to deal with various regressions noticed during the merge
window and to fix various device tree configurations for
boards. Also included is removal of mach-omap2/gpio.c that
is now dead code with device tree based booting that should
be OK for the early -rc cycle:
- A series of fixes to add empty chosen node to fix regressions
caused for bootloaders that don't create chosen node as the
decompressor needs the chosen node to merge command line and
ATAGs into it
- Fix missing logicpd-som-lv-37xx-devkit.dtb entry in Makefile
- Fix regression for am437x timers
- Fix wrong strcat for non-NULL terminated string
- A series of changes to fix tps65217 interrupts to not use
defines as we don't do that for interrupts
- Two patches to fix USB VBUS detection on am57xx-idk and force it
to peripheral mode until dwc3 role detection is working
- Add missing dra72-evm-tps65917 missing voltage supplies
accidentally left out of an earlier patch
- Fix n900 eMMC detection when booted on qemu
- Remove unwanted pr_err on failed memory allocation for
prm_common.c
- Remove legacy mach-omap2/gpio.c that now is dead code
since we boot mach-omap2 in device tree only mode
- Fix am572x-idk pcie1 by adding the missing gpio reset pin
* tag 'omap-for-v4.10/fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (23 commits)
ARM: dts: am572x-idk: Add gpios property to control PCIE_RESETn
ARM: OMAP2+: PRM: Delete an error message for a failed memory allocation
ARM: dts: n900: Mark eMMC slot with no-sdio and no-sd flags
ARM: dts: dra72-evm-tps65917: Add voltage supplies to usb_phy, mmc, dss
ARM: dts: am57xx-idk: Put USB2 port in peripheral mode
ARM: dts: am57xx-idk: Support VBUS detection on USB2 port
dt-bindings: input: Specify the interrupt number of TPS65217 power button
dt-bindings: power/supply: Update TPS65217 properties
dt-bindings: mfd: Remove TPS65217 interrupts
ARM: dts: am335x: Fix the interrupt name of TPS65217
ARM: omap2+: fixing wrong strcat for Non-NULL terminated string
ARM: omap2+: am437x: rollback to use omap3_gptimer_timer_init()
ARM: dts: omap3: Add DTS for Logic PD SOM-LV 37xx Dev Kit
ARM: dts: dra7: Add an empty chosen node to top level DTSI
ARM: dts: dm816x: Add an empty chosen node to top level DTSI
ARM: dts: dm814x: Add an empty chosen node to top level DTSI
ARM: dts: am4372: Add an empty chosen node to top level DTSI
ARM: dts: am33xx: Add an empty chosen node to top level DTSI
ARM: dts: omap5: Add an empty chosen node to top level DTSI
ARM: dts: omap4: Add an empty chosen node to top level DTSI
...
While working with ipmr, we noticed that it is impossible to determine
if an entry is actually unresolved or its IIF interface has disappeared
(e.g. virtual interface got deleted). These entries look almost
identical to user-space when dumping or receiving notifications. So in
order to recognize them add a new RTNH_F_UNRESOLVED flag which is set when
sending an unresolved cache entry to user-space.
Suggested-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Santosh Shilimkar says:
====================
net: RDS updates
v2->v3:
- Re-based against latest net-next head.
- Dropped a user visible change after discussing with David Miller.
It needs some more work to fully support old/new tools matrix.
- Addressed Dave's comment about bool usage in patch
"RDS: IB: track and log active side..."
v1->v2:
Re-aligned indentation in patch 'RDS: mark few internal functions..."
Series consist of:
- RDMA transport fixes for map failure, listen sequence, handler panic and
composite message notification.
- Couple of sparse fixes.
- Message logging improvements for bind failure, use once mr semantics
and connection remote address, active end point.
- Performance improvement for RDMA transport by reducing the post send
pressure on the queue and spreading the CQ vectors.
- Useful statistics for socket send/recv usage and receive cache usage.
- Additional RDS CMSG used by application to track the RDS message
stages for certain type of traffic to find out latency spots.
Can be enabled/disabled per socket.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Socket option to tap receive path latency in various stages
in nano seconds. It can be enabled on selective sockets using
using SO_RDS_MSG_RXPATH_LATENCY socket option. RDS will return
the data to application with RDS_CMSG_RXPATH_LATENCY in defined
format. Scope is left to add more trace points for future
without need of change in the interface.
Reviewed-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
There is a function in mdio for the old ethtool api gset.
We add a new function mdio45_ethtool_ksettings_get for the
new ethtool api glinksettings.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add "type" field to mlx5_core MKEY struct.
Check whether page fault happens on MKEY corresponding to MR.
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
