12 Dec, 2014
1 commit
-
Pull networking updates from David Miller:
1) New offloading infrastructure and example 'rocker' driver for
offloading of switching and routing to hardware.This work was done by a large group of dedicated individuals, not
limited to: Scott Feldman, Jiri Pirko, Thomas Graf, John Fastabend,
Jamal Hadi Salim, Andy Gospodarek, Florian Fainelli, Roopa Prabhu2) Start making the networking operate on IOV iterators instead of
modifying iov objects in-situ during transfers. Thanks to Al Viro
and Herbert Xu.3) A set of new netlink interfaces for the TIPC stack, from Richard
Alpe.4) Remove unnecessary looping during ipv6 routing lookups, from Martin
KaFai Lau.5) Add PAUSE frame generation support to gianfar driver, from Matei
Pavaluca.6) Allow for larger reordering levels in TCP, which are easily
achievable in the real world right now, from Eric Dumazet.7) Add a variable of napi_schedule that doesn't need to disable cpu
interrupts, from Eric Dumazet.8) Use a doubly linked list to optimize neigh_parms_release(), from
Nicolas Dichtel.9) Various enhancements to the kernel BPF verifier, and allow eBPF
programs to actually be attached to sockets. From Alexei
Starovoitov.10) Support TSO/LSO in sunvnet driver, from David L Stevens.
11) Allow controlling ECN usage via routing metrics, from Florian
Westphal.12) Remote checksum offload, from Tom Herbert.
13) Add split-header receive, BQL, and xmit_more support to amd-xgbe
driver, from Thomas Lendacky.14) Add MPLS support to openvswitch, from Simon Horman.
15) Support wildcard tunnel endpoints in ipv6 tunnels, from Steffen
Klassert.16) Do gro flushes on a per-device basis using a timer, from Eric
Dumazet. This tries to resolve the conflicting goals between the
desired handling of bulk vs. RPC-like traffic.17) Allow userspace to ask for the CPU upon what a packet was
received/steered, via SO_INCOMING_CPU. From Eric Dumazet.18) Limit GSO packets to half the current congestion window, from Eric
Dumazet.19) Add a generic helper so that all drivers set their RSS keys in a
consistent way, from Eric Dumazet.20) Add xmit_more support to enic driver, from Govindarajulu
Varadarajan.21) Add VLAN packet scheduler action, from Jiri Pirko.
22) Support configurable RSS hash functions via ethtool, from Eyal
Perry.* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1820 commits)
Fix race condition between vxlan_sock_add and vxlan_sock_release
net/macb: fix compilation warning for print_hex_dump() called with skb->mac_header
net/mlx4: Add support for A0 steering
net/mlx4: Refactor QUERY_PORT
net/mlx4_core: Add explicit error message when rule doesn't meet configuration
net/mlx4: Add A0 hybrid steering
net/mlx4: Add mlx4_bitmap zone allocator
net/mlx4: Add a check if there are too many reserved QPs
net/mlx4: Change QP allocation scheme
net/mlx4_core: Use tasklet for user-space CQ completion events
net/mlx4_core: Mask out host side virtualization features for guests
net/mlx4_en: Set csum level for encapsulated packets
be2net: Export tunnel offloads only when a VxLAN tunnel is created
gianfar: Fix dma check map error when DMA_API_DEBUG is enabled
cxgb4/csiostor: Don't use MASTER_MUST for fw_hello call
net: fec: only enable mdio interrupt before phy device link up
net: fec: clear all interrupt events to support i.MX6SX
net: fec: reset fep link status in suspend function
net: sock: fix access via invalid file descriptor
net: introduce helper macro for_each_cmsghdr
...
11 Dec, 2014
1 commit
-
As there are now no remaining users of arch_fast_hash(), lets kill
it entirely.This basically reverts commit 71ae8aac3e19 ("lib: introduce arch
optimized hash library") and follow-up work, that is f.e., commit
237217546d44 ("lib: hash: follow-up fixups for arch hash"),
commit e3fec2f74f7f ("lib: Add missing arch generic-y entries for
asm-generic/hash.h") and last but not least commit 6a02652df511
("perf tools: Fix include for non x86 architectures").Cc: Francesco Fusco
Cc: Thomas Graf
Cc: Arnaldo Carvalho de Melo
Signed-off-by: Daniel Borkmann
Signed-off-by: David S. Miller
06 Dec, 2014
1 commit
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introduce new setsockopt() command:
setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd, sizeof(prog_fd))
where prog_fd was received from syscall bpf(BPF_PROG_LOAD, attr, ...)
and attr->prog_type == BPF_PROG_TYPE_SOCKET_FILTERsetsockopt() calls bpf_prog_get() which increments refcnt of the program,
so it doesn't get unloaded while socket is using the program.The same eBPF program can be attached to multiple sockets.
User task exit automatically closes socket which calls sk_filter_uncharge()
which decrements refcnt of eBPF programSigned-off-by: Alexei Starovoitov
Signed-off-by: David S. Miller
12 Nov, 2014
1 commit
-
Alternative to RPS/RFS is to use hardware support for multiple
queues.Then split a set of million of sockets into worker threads, each
one using epoll() to manage events on its own socket pool.Ideally, we want one thread per RX/TX queue/cpu, but we have no way to
know after accept() or connect() on which queue/cpu a socket is managed.We normally use one cpu per RX queue (IRQ smp_affinity being properly
set), so remembering on socket structure which cpu delivered last packet
is enough to solve the problem.After accept(), connect(), or even file descriptor passing around
processes, applications can use :int cpu;
socklen_t len = sizeof(cpu);getsockopt(fd, SOL_SOCKET, SO_INCOMING_CPU, &cpu, &len);
And use this information to put the socket into the right silo
for optimal performance, as all networking stack should run
on the appropriate cpu, without need to send IPI (RPS/RFS).Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
21 Oct, 2014
1 commit
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write{b,w,l}_relaxed are implemented by some architectures in order to
permit memory-mapped I/O accesses with weaker barrier semantics than the
non-relaxed variants.This patch adds dummy macros for the write accessors to m32r, in the
same vein as the dummy definitions for the relaxed read accessors.Cc: Hirokazu Takata
Signed-off-by: Will Deacon
13 Oct, 2014
1 commit
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Pull arch atomic cleanups from Ingo Molnar:
"This is a series kept separate from the main locking tree, which
cleans up and improves various details in the atomics type handling:- Remove the unused atomic_or_long() method
- Consolidate and compress atomic ops implementations between
architectures, to reduce linecount and to make it easier to add new
ops.- Rewrite generic atomic support to only require cmpxchg() from an
architecture - generate all other methods from that"* 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()
locking, mips: Fix atomics
locking, sparc64: Fix atomics
locking,arch: Rewrite generic atomic support
locking,arch,xtensa: Fold atomic_ops
locking,arch,sparc: Fold atomic_ops
locking,arch,sh: Fold atomic_ops
locking,arch,powerpc: Fold atomic_ops
locking,arch,parisc: Fold atomic_ops
locking,arch,mn10300: Fold atomic_ops
locking,arch,mips: Fold atomic_ops
locking,arch,metag: Fold atomic_ops
locking,arch,m68k: Fold atomic_ops
locking,arch,m32r: Fold atomic_ops
locking,arch,ia64: Fold atomic_ops
locking,arch,hexagon: Fold atomic_ops
locking,arch,cris: Fold atomic_ops
locking,arch,avr32: Fold atomic_ops
locking,arch,arm64: Fold atomic_ops
locking,arch,arm: Fold atomic_ops
...
10 Oct, 2014
2 commits
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This patch removes the use of the IRQF_DISABLED flag
from arch/m32r/kernel/time.cIt's a NOOP since 2.6.35 and it will be removed one day.
Signed-off-by: Michael Opdenacker
Cc: Hirokazu Takata
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Geert Uytterhoeven
Cc: Hirokazu Takata
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
03 Oct, 2014
1 commit
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Use the much more reader friendly ACCESS_ONCE() instead of the cast to volatile.
This is purely a stylistic change.Signed-off-by: Pranith Kumar
Acked-by: Jesper Nilsson
Acked-by: Hans-Christian Egtvedt
Acked-by: Max Filippov
Signed-off-by: Peter Zijlstra (Intel)
Cc: Linus Torvalds
Cc: linux-arch@vger.kernel.org
Link: http://lkml.kernel.org/r/1411482607-20948-1-git-send-email-bobby.prani@gmail.com
Signed-off-by: Ingo Molnar
14 Sep, 2014
1 commit
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The nohz full code needs irq work to trigger its own interrupt so that
the subsystem can work even when the tick is stopped.Lets introduce arch_irq_work_has_interrupt() that archs can override to
tell about their support for this ability.Signed-off-by: Peter Zijlstra
Cc: Ingo Molnar
Cc: Paul E. McKenney
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Signed-off-by: Frederic Weisbecker
14 Aug, 2014
1 commit
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Many of the atomic op implementations are the same except for one
instruction; fold the lot into a few CPP macros and reduce LoC.This also prepares for easy addition of new ops.
Signed-off-by: Peter Zijlstra
Cc: Hirokazu Takata
Cc: Linus Torvalds
Cc: Paul E. McKenney
Cc: linux-m32r-ja@ml.linux-m32r.org
Cc: linux-m32r@ml.linux-m32r.org
Link: http://lkml.kernel.org/r/20140508135852.318635136@infradead.org
Signed-off-by: Ingo Molnar
10 Aug, 2014
1 commit
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Pull arch signal handling cleanup from Richard Weinberger:
"This patch series moves all remaining archs to the get_signal(),
signal_setup_done() and sigsp() functions.Currently these archs use open coded variants of the said functions.
Further, unused parameters get removed from get_signal_to_deliver(),
tracehook_signal_handler() and signal_delivered().At the end of the day we save around 500 lines of code."
* 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (43 commits)
powerpc: Use sigsp()
openrisc: Use sigsp()
mn10300: Use sigsp()
mips: Use sigsp()
microblaze: Use sigsp()
metag: Use sigsp()
m68k: Use sigsp()
m32r: Use sigsp()
hexagon: Use sigsp()
frv: Use sigsp()
cris: Use sigsp()
c6x: Use sigsp()
blackfin: Use sigsp()
avr32: Use sigsp()
arm64: Use sigsp()
arc: Use sigsp()
sas_ss_flags: Remove nested ternary if
Rip out get_signal_to_deliver()
Clean up signal_delivered()
tracehook_signal_handler: Remove sig, info, ka and regs
...
09 Aug, 2014
1 commit
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There's no need to have an architecture version of scatterlist.h if the
only thing the file does is include asm-generic/scatterlist.h. Switch to
the asm-generic versions directly.Acked-by: Jesper Nilsson
Acked-by: David Howells
Signed-off-by: Laura Abbott
Cc: Lennox Wu
Cc: Chen Liqin ,
Cc: Koichi Yasutake
Cc: Michal Simek
Cc: Hirokazu Takata
Cc: Mikael Starvik
Cc: Thomas Gleixner
Cc: Benjamin Herrenschmidt
Cc: Heiko Carstens
Cc: Russell King
Cc: Tony Luck
Cc: Fenghua Yu
Cc: Paul Mackerras
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: "James E.J. Bottomley"
Cc: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Aug, 2014
2 commits
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Use sigsp() instead of the open coded variant.
Signed-off-by: Richard Weinberger
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Use the more generic functions get_signal() signal_setup_done()
for signal delivery.Signed-off-by: Richard Weinberger
17 Jul, 2014
1 commit
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The arch_mutex_cpu_relax() function, introduced by 34b133f, is
hacky and ugly. It was added a few years ago to address the fact
that common cpu_relax() calls include yielding on s390, and thus
impact the optimistic spinning functionality of mutexes. Nowadays
we use this function well beyond mutexes: rwsem, qrwlock, mcs and
lockref. Since the macro that defines the call is in the mutex header,
any users must include mutex.h and the naming is misleading as well.This patch (i) renames the call to cpu_relax_lowlatency ("relax, but
only if you can do it with very low latency") and (ii) defines it in
each arch's asm/processor.h local header, just like for regular cpu_relax
functions. On all archs, except s390, cpu_relax_lowlatency is simply cpu_relax,
and thus we can take it out of mutex.h. While this can seem redundant,
I believe it is a good choice as it allows us to move out arch specific
logic from generic locking primitives and enables future(?) archs to
transparently define it, similarly to System Z.Signed-off-by: Davidlohr Bueso
Signed-off-by: Peter Zijlstra
Cc: Andrew Morton
Cc: Anton Blanchard
Cc: Aurelien Jacquiot
Cc: Benjamin Herrenschmidt
Cc: Bharat Bhushan
Cc: Catalin Marinas
Cc: Chen Liqin
Cc: Chris Metcalf
Cc: Christian Borntraeger
Cc: Chris Zankel
Cc: David Howells
Cc: David S. Miller
Cc: Deepthi Dharwar
Cc: Dominik Dingel
Cc: Fenghua Yu
Cc: Geert Uytterhoeven
Cc: Guan Xuetao
Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
Cc: Heiko Carstens
Cc: Helge Deller
Cc: Hirokazu Takata
Cc: Ivan Kokshaysky
Cc: James E.J. Bottomley
Cc: James Hogan
Cc: Jason Wang
Cc: Jesper Nilsson
Cc: Joe Perches
Cc: Jonas Bonn
Cc: Joseph Myers
Cc: Kees Cook
Cc: Koichi Yasutake
Cc: Lennox Wu
Cc: Linus Torvalds
Cc: Mark Salter
Cc: Martin Schwidefsky
Cc: Matt Turner
Cc: Max Filippov
Cc: Michael Neuling
Cc: Michal Simek
Cc: Mikael Starvik
Cc: Nicolas Pitre
Cc: Paolo Bonzini
Cc: Paul Burton
Cc: Paul E. McKenney
Cc: Paul Gortmaker
Cc: Paul Mackerras
Cc: Qais Yousef
Cc: Qiaowei Ren
Cc: Rafael Wysocki
Cc: Ralf Baechle
Cc: Richard Henderson
Cc: Richard Kuo
Cc: Russell King
Cc: Steven Miao
Cc: Steven Rostedt
Cc: Stratos Karafotis
Cc: Tim Chen
Cc: Tony Luck
Cc: Vasily Kulikov
Cc: Vineet Gupta
Cc: Vineet Gupta
Cc: Waiman Long
Cc: Will Deacon
Cc: Wolfram Sang
Cc: adi-buildroot-devel@lists.sourceforge.net
Cc: linux390@de.ibm.com
Cc: linux-alpha@vger.kernel.org
Cc: linux-am33-list@redhat.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-cris-kernel@axis.com
Cc: linux-hexagon@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
Cc: linux@lists.openrisc.net
Cc: linux-m32r-ja@ml.linux-m32r.org
Cc: linux-m32r@ml.linux-m32r.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-metag@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: linux-xtensa@linux-xtensa.org
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/1404079773.2619.4.camel@buesod1.americas.hpqcorp.net
Signed-off-by: Ingo Molnar
18 Apr, 2014
1 commit
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M32r uses asm-generic/barrier.h and its smp_mb() is barrier();
therefore we can use the generic versions which default to smp_mb().Signed-off-by: Peter Zijlstra
Acked-by: Paul E. McKenney
Link: http://lkml.kernel.org/n/tip-wh6xljltyvmpy9t0bc80k1fy@git.kernel.org
Cc: Hirokazu Takata
Cc: Linus Torvalds
Cc: linux-kernel@vger.kernel.org
Cc: linux-m32r-ja@ml.linux-m32r.org
Cc: linux-m32r@ml.linux-m32r.org
Signed-off-by: Ingo Molnar
08 Apr, 2014
1 commit
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If the renamed symbol is defined lib/iomap.c implements ioport_map and
ioport_unmap and currently (nearly) all platforms define the port
accessor functions outb/inb and friend unconditionally. So
HAS_IOPORT_MAP is the better name for this.Consequently NO_IOPORT is renamed to NO_IOPORT_MAP.
The motivation for this change is to reintroduce a symbol HAS_IOPORT
that signals if outb/int et al are available. I will address that at
least one merge window later though to keep surprises to a minimum and
catch new introductions of (HAS|NO)_IOPORT.The changes in this commit were done using:
$ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/'
Signed-off-by: Uwe Kleine-König
Acked-by: Arnd Bergmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Mar, 2014
1 commit
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Many architectures have a stub cputime.h that only include the default
cputime.hLets remove the useless headers, we only need to mention that we want
the default headers on the Kbuild files.Cc: Archs
Cc: Ingo Molnar
Cc: Marcelo Tosatti
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Acked-by: Rik van Riel
Signed-off-by: Frederic Weisbecker
10 Feb, 2014
2 commits
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This patch allows each architecture to add its specific assembly optimized
arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for
MCS lock and unlock functions.Signed-off-by: Tim Chen
Cc: Scott J Norton
Cc: Raghavendra K T
Cc: AswinChandramouleeswaran
Cc: George Spelvin
Cc: Rik vanRiel
Cc: Andrea Arcangeli
Cc: MichelLespinasse
Cc: Peter Hurley
Cc: Andi Kleen
Cc: Alex Shi
Cc: Dave Hansen
Cc: Tim Chen
Cc: Arnd Bergmann
Cc: "Figo.zhang"
Cc: "Paul E.McKenney"
Cc: "H. Peter Anvin"
Cc: Davidlohr Bueso
Cc: Waiman Long
Cc: Ingo Molnar
Cc: Will Deacon
Cc: Andrew Morton
Cc: Linus Torvalds
Cc: Matthew R Wilcox
Signed-off-by: Peter Zijlstra
Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK
Signed-off-by: Ingo Molnar -
We perform a clean up of the Kbuid files in each architecture.
We order the files in each Kbuild in alphabetical order
by running the below script.for i in arch/*/include/asm/Kbuild
do
cat $i | gawk '/^generic-y/ {
i = 3;
do {
for (; i ${i}.sorted;
mv ${i}.sorted $i;
doneSigned-off-by: Tim Chen
Cc: Arnd Bergmann
Cc: Matthew R Wilcox
Cc: AswinChandramouleeswaran
Cc: Dave Hansen
Cc: "Paul E.McKenney"
Cc: Scott J Norton
Cc: Will Deacon
Cc: "Figo.zhang"
Cc: Linus Torvalds
Cc: Rik van Riel
Cc: Waiman Long
Cc: Peter Hurley
Cc: Andrea Arcangeli
Cc: Tim Chen
Cc: Alex Shi
Cc: Raghavendra K T
Cc: Andi Kleen
Cc: George Spelvin
Cc: MichelLespinasse
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Davidlohr Bueso
Cc: Andrew Morton
Signed-off-by: Peter Zijlstra
[ Fixed build bug. ]
Signed-off-by: Ingo Molnar
26 Jan, 2014
1 commit
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Pull networking updates from David Miller:
1) BPF debugger and asm tool by Daniel Borkmann.
2) Speed up create/bind in AF_PACKET, also from Daniel Borkmann.
3) Correct reciprocal_divide and update users, from Hannes Frederic
Sowa and Daniel Borkmann.4) Currently we only have a "set" operation for the hw timestamp socket
ioctl, add a "get" operation to match. From Ben Hutchings.5) Add better trace events for debugging driver datapath problems, also
from Ben Hutchings.6) Implement auto corking in TCP, from Eric Dumazet. Basically, if we
have a small send and a previous packet is already in the qdisc or
device queue, defer until TX completion or we get more data.7) Allow userspace to manage ipv6 temporary addresses, from Jiri Pirko.
8) Add a qdisc bypass option for AF_PACKET sockets, from Daniel
Borkmann.9) Share IP header compression code between Bluetooth and IEEE802154
layers, from Jukka Rissanen.10) Fix ipv6 router reachability probing, from Jiri Benc.
11) Allow packets to be captured on macvtap devices, from Vlad Yasevich.
12) Support tunneling in GRO layer, from Jerry Chu.
13) Allow bonding to be configured fully using netlink, from Scott
Feldman.14) Allow AF_PACKET users to obtain the VLAN TPID, just like they can
already get the TCI. From Atzm Watanabe.15) New "Heavy Hitter" qdisc, from Terry Lam.
16) Significantly improve the IPSEC support in pktgen, from Fan Du.
17) Allow ipv4 tunnels to cache routes, just like sockets. From Tom
Herbert.18) Add Proportional Integral Enhanced packet scheduler, from Vijay
Subramanian.19) Allow openvswitch to mmap'd netlink, from Thomas Graf.
20) Key TCP metrics blobs also by source address, not just destination
address. From Christoph Paasch.21) Support 10G in generic phylib. From Andy Fleming.
22) Try to short-circuit GRO flow compares using device provided RX
hash, if provided. From Tom Herbert.The wireless and netfilter folks have been busy little bees too.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2064 commits)
net/cxgb4: Fix referencing freed adapter
ipv6: reallocate addrconf router for ipv6 address when lo device up
fib_frontend: fix possible NULL pointer dereference
rtnetlink: remove IFLA_BOND_SLAVE definition
rtnetlink: remove check for fill_slave_info in rtnl_have_link_slave_info
qlcnic: update version to 5.3.55
qlcnic: Enhance logic to calculate msix vectors.
qlcnic: Refactor interrupt coalescing code for all adapters.
qlcnic: Update poll controller code path
qlcnic: Interrupt code cleanup
qlcnic: Enhance Tx timeout debugging.
qlcnic: Use bool for rx_mac_learn.
bonding: fix u64 division
rtnetlink: add missing IFLA_BOND_AD_INFO_UNSPEC
sfc: Use the correct maximum TX DMA ring size for SFC9100
Add Shradha Shah as the sfc driver maintainer.
net/vxlan: Share RX skb de-marking and checksum checks with ovs
tulip: cleanup by using ARRAY_SIZE()
ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called
net/cxgb4: Don't retrieve stats during recovery
...
24 Jan, 2014
1 commit
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Remove an outdated reference to "most personal computers" having only one
CPU, and change the use of "singleprocessor" and "single processor" in
CONFIG_SMP's documentation to "uniprocessor" across all arches where that
documentation is present.Signed-off-by: Robert Graffham
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
19 Jan, 2014
1 commit
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For user space packet capturing libraries such as libpcap, there's
currently only one way to check which BPF extensions are supported
by the kernel, that is, commit aa1113d9f85d ("net: filter: return
-EINVAL if BPF_S_ANC* operation is not supported"). For querying all
extensions at once this might be rather inconvenient.Therefore, this patch introduces a new option which can be used as
an argument for getsockopt(), and allows one to obtain information
about which BPF extensions are supported by the current kernel.As David Miller suggests, we do not need to define any bits right
now and status quo can just return 0 in order to state that this
versions supports SKF_AD_PROTOCOL up to SKF_AD_PAY_OFFSET. Later
additions to BPF extensions need to add their bits to the
bpf_tell_extensions() function, as documented in the comment.Signed-off-by: Michal Sekletar
Cc: David Miller
Reviewed-by: Daniel Borkmann
Signed-off-by: David S. Miller
12 Jan, 2014
1 commit
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We're going to be adding a few new barrier primitives, and in order to
avoid endless duplication make more agressive use of
asm-generic/barrier.h.Change the asm-generic/barrier.h such that it allows partial barrier
definitions and fills out the rest with defaults.There are a few architectures (m32r, m68k) that could probably
do away with their barrier.h file entirely but are kept for now due to
their unconventional nop() implementation.Suggested-by: Geert Uytterhoeven
Reviewed-by: "Paul E. McKenney"
Reviewed-by: Mathieu Desnoyers
Signed-off-by: Peter Zijlstra
Cc: Michael Ellerman
Cc: Michael Neuling
Cc: Russell King
Cc: Heiko Carstens
Cc: Linus Torvalds
Cc: Martin Schwidefsky
Cc: Victor Kaplansky
Cc: Tony Luck
Cc: Oleg Nesterov
Cc: Benjamin Herrenschmidt
Cc: Frederic Weisbecker
Link: http://lkml.kernel.org/r/20131213150640.846368594@infradead.org
Signed-off-by: Ingo Molnar
18 Dec, 2013
1 commit
-
Reported-by: Stephen Rothwell
Signed-off-by: David S. Miller
20 Nov, 2013
1 commit
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Pull irq cleanups from Ingo Molnar:
"This is a multi-arch cleanup series from Thomas Gleixner, which we
kept to near the end of the merge window, to not interfere with
architecture updates.This series (motivated by the -rt kernel) unifies more aspects of IRQ
handling and generalizes PREEMPT_ACTIVE"* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
preempt: Make PREEMPT_ACTIVE generic
sparc: Use preempt_schedule_irq
ia64: Use preempt_schedule_irq
m32r: Use preempt_schedule_irq
hardirq: Make hardirq bits generic
m68k: Simplify low level interrupt handling code
genirq: Prevent spurious detection for unconditionally polled interrupts
16 Nov, 2013
1 commit
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Pull trivial tree updates from Jiri Kosina:
"Usual earth-shaking, news-breaking, rocket science pile from
trivial.git"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits)
doc: usb: Fix typo in Documentation/usb/gadget_configs.txt
doc: add missing files to timers/00-INDEX
timekeeping: Fix some trivial typos in comments
mm: Fix some trivial typos in comments
irq: Fix some trivial typos in comments
NUMA: fix typos in Kconfig help text
mm: update 00-INDEX
doc: Documentation/DMA-attributes.txt fix typo
DRM: comment: `halve' -> `half'
Docs: Kconfig: `devlopers' -> `developers'
doc: typo on word accounting in kprobes.c in mutliple architectures
treewide: fix "usefull" typo
treewide: fix "distingush" typo
mm/Kconfig: Grammar s/an/a/
kexec: Typo s/the/then/
Documentation/kvm: Update cpuid documentation for steal time and pv eoi
treewide: Fix common typo in "identify"
__page_to_pfn: Fix typo in comment
Correct some typos for word frequency
clk: fixed-factor: Fix a trivial typo
...
15 Nov, 2013
3 commits
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We've switched over every architecture that supports SMP to it, so
remove the new useless config variable.Signed-off-by: Christoph Hellwig
Cc: Jan Kara
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Kirill A. Shutemov
Cc: Hirokazu Takata
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add missing check for memory allocation fail.
Signed-off-by: Kirill A. Shutemov
Cc: Hirokazu Takata
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
14 Nov, 2013
3 commits
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No point in having this bit defined by architecture.
Signed-off-by: Thomas Gleixner
Acked-by: Peter Zijlstra
Link: http://lkml.kernel.org/r/20130917183629.090698799@linutronix.de -
Use the proper core function instead of fiddling with preempt_active
and interrupt enable in the low level code.Signed-off-by: Thomas Gleixner
Cc: Hirokazu Takata
Cc: linux-m32r-ja@ml.linux-m32r.org
Link: http://lkml.kernel.org/r/20130917183628.758421136@linutronix.de -
There is no reason for per arch hardirq bits. Make them all generic
Signed-off-by: Thomas Gleixner
Acked-by: Peter Zijlstra
Link: http://lkml.kernel.org/r/20130917183628.534494408@linutronix.de
13 Nov, 2013
1 commit
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Pull networking updates from David Miller:
1) The addition of nftables. No longer will we need protocol aware
firewall filtering modules, it can all live in userspace.At the core of nftables is a, for lack of a better term, virtual
machine that executes byte codes to inspect packet or metadata
(arriving interface index, etc.) and make verdict decisions.Besides support for loading packet contents and comparing them, the
interpreter supports lookups in various datastructures as
fundamental operations. For example sets are supports, and
therefore one could create a set of whitelist IP address entries
which have ACCEPT verdicts attached to them, and use the appropriate
byte codes to do such lookups.Since the interpreted code is composed in userspace, userspace can
do things like optimize things before giving it to the kernel.Another major improvement is the capability of atomically updating
portions of the ruleset. In the existing netfilter implementation,
one has to update the entire rule set in order to make a change and
this is very expensive.Userspace tools exist to create nftables rules using existing
netfilter rule sets, but both kernel implementations will need to
co-exist for quite some time as we transition from the old to the
new stuff.Kudos to Patrick McHardy, Pablo Neira Ayuso, and others who have
worked so hard on this.2) Daniel Borkmann and Hannes Frederic Sowa made several improvements
to our pseudo-random number generator, mostly used for things like
UDP port randomization and netfitler, amongst other things.In particular the taus88 generater is updated to taus113, and test
cases are added.3) Support 64-bit rates in HTB and TBF schedulers, from Eric Dumazet
and Yang Yingliang.4) Add support for new 577xx tigon3 chips to tg3 driver, from Nithin
Sujir.5) Fix two fatal flaws in TCP dynamic right sizing, from Eric Dumazet,
Neal Cardwell, and Yuchung Cheng.6) Allow IP_TOS and IP_TTL to be specified in sendmsg() ancillary
control message data, much like other socket option attributes.
From Francesco Fusco.7) Allow applications to specify a cap on the rate computed
automatically by the kernel for pacing flows, via a new
SO_MAX_PACING_RATE socket option. From Eric Dumazet.8) Make the initial autotuned send buffer sizing in TCP more closely
reflect actual needs, from Eric Dumazet.9) Currently early socket demux only happens for TCP sockets, but we
can do it for connected UDP sockets too. Implementation from Shawn
Bohrer.10) Refactor inet socket demux with the goal of improving hash demux
performance for listening sockets. With the main goals being able
to use RCU lookups on even request sockets, and eliminating the
listening lock contention. From Eric Dumazet.11) The bonding layer has many demuxes in it's fast path, and an RCU
conversion was started back in 3.11, several changes here extend the
RCU usage to even more locations. From Ding Tianhong and Wang
Yufen, based upon suggestions by Nikolay Aleksandrov and Veaceslav
Falico.12) Allow stackability of segmentation offloads to, in particular, allow
segmentation offloading over tunnels. From Eric Dumazet.13) Significantly improve the handling of secret keys we input into the
various hash functions in the inet hashtables, TCP fast open, as
well as syncookies. From Hannes Frederic Sowa. The key fundamental
operation is "net_get_random_once()" which uses static keys.Hannes even extended this to ipv4/ipv6 fragmentation handling and
our generic flow dissector.14) The generic driver layer takes care now to set the driver data to
NULL on device removal, so it's no longer necessary for drivers to
explicitly set it to NULL any more. Many drivers have been cleaned
up in this way, from Jingoo Han.15) Add a BPF based packet scheduler classifier, from Daniel Borkmann.
16) Improve CRC32 interfaces and generic SKB checksum iterators so that
SCTP's checksumming can more cleanly be handled. Also from Daniel
Borkmann.17) Add a new PMTU discovery mode, IP_PMTUDISC_INTERFACE, which forces
using the interface MTU value. This helps avoid PMTU attacks,
particularly on DNS servers. From Hannes Frederic Sowa.18) Use generic XPS for transmit queue steering rather than internal
(re-)implementation in virtio-net. From Jason Wang.* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits)
random32: add test cases for taus113 implementation
random32: upgrade taus88 generator to taus113 from errata paper
random32: move rnd_state to linux/random.h
random32: add prandom_reseed_late() and call when nonblocking pool becomes initialized
random32: add periodic reseeding
random32: fix off-by-one in seeding requirement
PHY: Add RTL8201CP phy_driver to realtek
xtsonic: add missing platform_set_drvdata() in xtsonic_probe()
macmace: add missing platform_set_drvdata() in mace_probe()
ethernet/arc/arc_emac: add missing platform_set_drvdata() in arc_emac_probe()
ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh
vlan: Implement vlan_dev_get_egress_qos_mask as an inline.
ixgbe: add warning when max_vfs is out of range.
igb: Update link modes display in ethtool
netfilter: push reasm skb through instead of original frag skbs
ip6_output: fragment outgoing reassembled skb properly
MAINTAINERS: mv643xx_eth: take over maintainership from Lennart
net_sched: tbf: support of 64bit rates
ixgbe: deleting dfwd stations out of order can cause null ptr deref
ixgbe: fix build err, num_rx_queues is only available with CONFIG_RPS
...
14 Oct, 2013
1 commit
-
Signed-off-by: Michael Opdenacker
Signed-off-by: Jiri Kosina
29 Sep, 2013
1 commit
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As mentioned in commit afe4fd062416b ("pkt_sched: fq: Fair Queue packet
scheduler"), this patch adds a new socket option.SO_MAX_PACING_RATE offers the application the ability to cap the
rate computed by transport layer. Value is in bytes per second.u32 val = 1000000;
setsockopt(sockfd, SOL_SOCKET, SO_MAX_PACING_RATE, &val, sizeof(val));To be effectively paced, a flow must use FQ packet scheduler.
Note that a packet scheduler takes into account the headers for its
computations. The effective payload rate depends on MSS and retransmits
if any.I chose to make this pacing rate a SOL_SOCKET option instead of a
TCP one because this can be used by other protocols.Signed-off-by: Eric Dumazet
Cc: Steinar H. Gunderson
Cc: Michael Kerrisk
Signed-off-by: David S. Miller
25 Sep, 2013
1 commit
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In order to prepare to per-arch implementations of preempt_count move
the required bits into an asm-generic header and use this for all
archs.Signed-off-by: Peter Zijlstra
Link: http://lkml.kernel.org/n/tip-h5j0c1r3e3fk015m30h8f1zx@git.kernel.org
Signed-off-by: Ingo Molnar
13 Sep, 2013
2 commits
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After the last architecture switched to generic hard irqs the config
options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code
for !CONFIG_GENERIC_HARDIRQS can be removed.Signed-off-by: Martin Schwidefsky
-
Unlike global OOM handling, memory cgroup code will invoke the OOM killer
in any OOM situation because it has no way of telling faults occuring in
kernel context - which could be handled more gracefully - from
user-triggered faults.Pass a flag that identifies faults originating in user space from the
architecture-specific fault handlers to generic code so that memcg OOM
handling can be improved.Signed-off-by: Johannes Weiner
Reviewed-by: Michal Hocko
Cc: David Rientjes
Cc: KAMEZAWA Hiroyuki
Cc: azurIt
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
