Commit Graph

183975 Commits

Author SHA1 Message Date
David S. Miller
47871889c6 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
	drivers/firmware/iscsi_ibft.c
2010-02-28 19:23:06 -08:00
Vladislav Zolotarov
c16cc0b464 bnx2x: Tx barriers and locks
[Resending with the proper subject. Sorry for the mess. ]

This patch is based on the RFC of Stanislaw Gruszka.

More specifically it fixes two possible races:
- One, described by Stanislaw, may lead to permanent disabling of the Tx
queue.
This is fixed by adding the smp_wmb() to propagate the BD consumer
change towards the memory.
- Second may lead to bnx2x_start_xmit() returning NETDEV_TX_BUSY.
This is fixed by taking a tx_lock() before rechecking the number of
available Tx BDs.

thanks,
vlad

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 18:37:12 -08:00
Eric W. Biederman
76dadd76c2 scm: Only support SCM_RIGHTS on unix domain sockets.
We use scm_send and scm_recv on both unix domain and
netlink sockets, but only unix domain sockets support
everything required for file descriptor passing,
so error if someone attempts to pass file descriptors
over netlink sockets.

Cc: stable@kernel.org
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 18:22:02 -08:00
Linus Torvalds
30ff056c42 Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, uv: Remove recursion in uv_heartbeat_enable()
  x86, uv: uv_global_gru_mmr_address() macro fix
  x86, uv: Add serial number parameter to uv_bios_get_sn_info()
2010-02-28 11:00:55 -08:00
Linus Torvalds
6f5621cb16 Merge branch 'x86-ptrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-ptrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, ptrace: Remove set_stopped_child_used_math() in [x]fpregs_set
  x86, ptrace: Simplify xstateregs_get()
  ptrace: Fix ptrace_regset() comments and diagnose errors specifically
  parisc: Disable CONFIG_HAVE_ARCH_TRACEHOOK
  ptrace: Add support for generic PTRACE_GETREGSET/PTRACE_SETREGSET
  x86, ptrace: regset extensions to support xstate
2010-02-28 10:59:44 -08:00
Linus Torvalds
c7e15899d0 Merge branch 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Enable NMI on all cpus on UV
  vgaarb: Add user selectability of the number of GPUS in a system
  vgaarb: Fix VGA arbiter to accept PCI domains other than 0
  x86, uv: Update UV arch to target Legacy VGA I/O correctly.
  pci: Update pci_set_vga_state() to call arch functions
2010-02-28 10:59:18 -08:00
Linus Torvalds
f6a0b5cd34 Merge branch 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, setup: Don't skip mode setting for the standard VGA modes
  x86-64, setup: Inhibit decompressor output if video info is invalid
  x86, setup: When restoring the screen, update boot_params.screen_info
2010-02-28 10:43:53 -08:00
Linus Torvalds
d6cd4715e2 Merge branch 'x86-rwsem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-rwsem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-64, rwsem: Avoid store forwarding hazard in __downgrade_write
  x86-64, rwsem: 64-bit xadd rwsem implementation
  x86: Fix breakage of UML from the changes in the rwsem system
  x86-64: support native xadd rwsem implementation
  x86: clean up rwsem type system
2010-02-28 10:41:35 -08:00
Linus Torvalds
1eca9acbf9 Merge branch 'x86-numa-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-numa-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, numa: Remove configurable node size support for numa emulation
  x86, numa: Add fixed node size option for numa emulation
  x86, numa: Fix numa emulation calculation of big nodes
  x86, acpi: Map hotadded cpu to correct node.
2010-02-28 10:39:36 -08:00
Linus Torvalds
0091945b47 Merge branch 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Convert set_atomicity_lock to raw_spinlock
  x86, mtrr: Kill over the top warn
  x86, mtrr: Constify struct mtrr_ops
2010-02-28 10:39:16 -08:00
Linus Torvalds
46bbffad54 Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mm: Unify kernel_physical_mapping_init() API
  x86, mm: Allow highmem user page tables to be disabled at boot time
  x86: Do not reserve brk for DMI if it's not going to be used
  x86: Convert tlbstate_lock to raw_spinlock
  x86: Use the generic page_is_ram()
  x86: Remove BIOS data range from e820
  Move page_is_ram() declaration to mm.h
  Generic page_is_ram: use __weak
  resources: introduce generic page_is_ram()
2010-02-28 10:38:45 -08:00
Linus Torvalds
85fe20bfd4 Merge branch 'x86-io-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-io-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Merge io.h
  x86: Simplify flush_write_buffers()
  x86: Clean up mem*io functions.
  x86-64: Use BUILDIO in io_64.h
  x86-64: Reorganize io_64.h
  x86-32: Remove _local variants of in/out from io_32.h
  x86-32: Move XQUAD definitions to numaq.h
2010-02-28 10:37:40 -08:00
Linus Torvalds
58f02db466 Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, cacheinfo: Enable L3 CID only on AMD
  x86, cacheinfo: Remove NUMA dependency, fix for AMD Fam10h rev D1
  x86, cpu: Print AMD virtualization features in /proc/cpuinfo
  x86, cacheinfo: Calculate L3 indices
  x86, cacheinfo: Add cache index disable sysfs attrs only to L3 caches
  x86, cacheinfo: Fix disabling of L3 cache indices
  intel-agp: Switch to wbinvd_on_all_cpus
  x86, lib: Add wbinvd smp helpers
2010-02-28 10:37:06 -08:00
Linus Torvalds
43a834d86c Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Remove trailing spaces in messages
  x86, mtrr: Remove unused mtrr/state.c
  x86, trivial: Fix grammo in tsc comment about Geode TSC reliability
2010-02-28 10:36:48 -08:00
Linus Torvalds
a7f16d10b5 Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Mark atomic irq ops raw for 32bit legacy
  x86: Merge show_regs()
  x86: Macroise x86 cache descriptors
  x86-32: clean up rwsem inline asm statements
  x86: Merge asm/atomic_{32,64}.h
  x86: Sync asm/atomic_32.h and asm/atomic_64.h
  x86: Split atomic64_t functions into seperate headers
  x86-64: Modify memcpy()/memset() alternatives mechanism
  x86-64: Modify copy_user_generic() alternatives mechanism
  x86: Lift restriction on the location of FIX_BTMAP_*
  x86, core: Optimize hweight32()
2010-02-28 10:35:09 -08:00
Linus Torvalds
f66ffdedbf Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits)
  sched: Fix SCHED_MC regression caused by change in sched cpu_power
  sched: Don't use possibly stale sched_class
  kthread, sched: Remove reference to kthread_create_on_cpu
  sched: cpuacct: Use bigger percpu counter batch values for stats counters
  percpu_counter: Make __percpu_counter_add an inline function on UP
  sched: Remove member rt_se from struct rt_rq
  sched: Change usage of rt_rq->rt_se to rt_rq->tg->rt_se[cpu]
  sched: Remove unused update_shares_locked()
  sched: Use for_each_bit
  sched: Queue a deboosted task to the head of the RT prio queue
  sched: Implement head queueing for sched_rt
  sched: Extend enqueue_task to allow head queueing
  sched: Remove USER_SCHED
  sched: Fix the place where group powers are updated
  sched: Assume *balance is valid
  sched: Remove load_balance_newidle()
  sched: Unify load_balance{,_newidle}()
  sched: Add a lock break for PREEMPT=y
  sched: Remove from fwd decls
  sched: Remove rq_iterator from move_one_task
  ...

Fix up trivial conflicts in kernel/sched.c
2010-02-28 10:31:01 -08:00
Linus Torvalds
2531216f23 Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix race between ttwu() and task_rq_lock()
  sched: Fix SMT scheduler regression in find_busiest_queue()
  sched: Fix sched_mv_power_savings for !SMT
  kernel/sched.c: Suppress unused var warning
2010-02-28 10:23:41 -08:00
Linus Torvalds
6556a67435 Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (172 commits)
  perf_event, amd: Fix spinlock initialization
  perf_event: Fix preempt warning in perf_clock()
  perf tools: Flush maps on COMM events
  perf_events, x86: Split PMU definitions into separate files
  perf annotate: Handle samples not at objdump output addr boundaries
  perf_events, x86: Remove superflous MSR writes
  perf_events: Simplify code by removing cpu argument to hw_perf_group_sched_in()
  perf_events, x86: AMD event scheduling
  perf_events: Add new start/stop PMU callbacks
  perf_events: Report the MMAP pgoff value in bytes
  perf annotate: Defer allocating sym_priv->hist array
  perf symbols: Improve debugging information about symtab origins
  perf top: Use a macro instead of a constant variable
  perf symbols: Check the right return variable
  perf/scripts: Tag syscall_name helper as not yet available
  perf/scripts: Add perf-trace-python Documentation
  perf/scripts: Remove unnecessary PyTuple resizes
  perf/scripts: Add syscall tracing scripts
  perf/scripts: Add Python scripting engine
  perf/scripts: Remove check-perf-trace from listed scripts
  ...

Fix trivial conflict in tools/perf/util/probe-event.c
2010-02-28 10:20:25 -08:00
Linus Torvalds
e0d272429a Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (28 commits)
  ftrace: Add function names to dangling } in function graph tracer
  tracing: Simplify memory recycle of trace_define_field
  tracing: Remove unnecessary variable in print_graph_return
  tracing: Fix typo of info text in trace_kprobe.c
  tracing: Fix typo in prof_sysexit_enable()
  tracing: Remove CONFIG_TRACE_POWER from kernel config
  tracing: Fix ftrace_event_call alignment for use with gcc 4.5
  ftrace: Remove memory barriers from NMI code when not needed
  tracing/kprobes: Add short documentation for HAVE_REGS_AND_STACK_ACCESS_API
  s390: Add pt_regs register and stack access API
  tracing/kprobes: Make Kconfig dependencies generic
  tracing: Unify arch_syscall_addr() implementations
  tracing: Add notrace to TRACE_EVENT implementation functions
  ftrace: Allow to remove a single function from function graph filter
  tracing: Add correct/incorrect to sort keys for branch annotation output
  tracing: Simplify test for function_graph tracing start point
  tracing: Drop the tr check from the graph tracing path
  tracing: Add stack dump to trace_printk if stacktrace option is set
  tracing: Use appropriate perl constructs in recordmcount.pl
  tracing: optimize recordmcount.pl for offsets-handling
  ...
2010-02-28 10:17:55 -08:00
Linus Torvalds
d25e8dbdab Merge branch 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  oprofile/x86: fix msr access to reserved counters
  oprofile/x86: use kzalloc() instead of kmalloc()
  oprofile/x86: fix perfctr nmi reservation for mulitplexing
  oprofile/x86: add comment to counter-in-use warning
  oprofile/x86: warn user if a counter is already active
  oprofile/x86: implement randomization for IBS periodic op counter
  oprofile/x86: implement lsfr pseudo-random number generator for IBS
  oprofile/x86: implement IBS cpuid feature detection
  oprofile/x86: remove node check in AMD IBS initialization
  oprofile/x86: remove OPROFILE_IBS config option
  oprofile: remove EXPERIMENTAL from the config option description
  oprofile: remove tracing build dependency
2010-02-28 10:15:31 -08:00
Linus Torvalds
642c4c75a7 Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (44 commits)
  rcu: Fix accelerated GPs for last non-dynticked CPU
  rcu: Make non-RCU_PROVE_LOCKING rcu_read_lock_sched_held() understand boot
  rcu: Fix accelerated grace periods for last non-dynticked CPU
  rcu: Export rcu_scheduler_active
  rcu: Make rcu_read_lock_sched_held() take boot time into account
  rcu: Make lockdep_rcu_dereference() message less alarmist
  sched, cgroups: Fix module export
  rcu: Add RCU_CPU_STALL_VERBOSE to dump detailed per-task information
  rcu: Fix rcutorture mod_timer argument to delay one jiffy
  rcu: Fix deadlock in TREE_PREEMPT_RCU CPU stall detection
  rcu: Convert to raw_spinlocks
  rcu: Stop overflowing signed integers
  rcu: Use canonical URL for Mathieu's dissertation
  rcu: Accelerate grace period if last non-dynticked CPU
  rcu: Fix citation of Mathieu's dissertation
  rcu: Documentation update for CONFIG_PROVE_RCU
  security: Apply lockdep-based checking to rcu_dereference() uses
  idr: Apply lockdep-based diagnostics to rcu_dereference() uses
  radix-tree: Disable RCU lockdep checking in radix tree
  vfs: Abstract rcu_dereference_check for files-fdtable use
  ...
2010-02-28 10:13:16 -08:00
Linus Torvalds
f91b22c35f Merge branches 'core-ipi-for-linus', 'core-locking-for-linus', 'tracing-fixes-for-linus', 'x86-debug-for-linus', 'x86-doc-for-linus', 'x86-gpu-for-linus' and 'x86-rlimit-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-ipi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  generic-ipi: Optimize accesses by using DEFINE_PER_CPU_SHARED_ALIGNED for IPI data

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  plist: Fix grammar mistake, and c-style mistake

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  kprobes: Add mcount to the kprobes blacklist

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86_64: Print modules like i386 does

* 'x86-doc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Put 'nopat' in kernel-parameters

* 'x86-gpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-64: Allow fbdev primary video code

* 'x86-rlimit-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Use helpers for rlimits
2010-02-28 10:04:02 -08:00
Sridhar Samudrala
39286fa41a vhost-net: restart tx poll on sk_sndbuf full
guest to remote communication with vhost net sometimes stops until
guest driver is restarted. This happens when we get guest kick precisely
when the backend send queue is full, as a result handle_tx() returns without
polling backend. This patch fixes this by restarting tx poll on this condition.

Signed-off-by: Sridhar Samudrala <samudrala@us.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Tom Lendacky <toml@us.ibm.com>
2010-02-28 19:50:33 +02:00
Michael S. Tsirkin
d6db3f5c11 vhost: fix get_user_pages_fast error handling
get_user_pages_fast returns number of pages on success, negative value
on failure, but never 0. Fix vhost code to match this logic.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-02-28 19:42:36 +02:00
Michael S. Tsirkin
73a99f0830 vhost: initialize log eventfd context pointer
vq log eventfd context pointer needs to be initialized, otherwise
operation may fail or oops if log is enabled but log eventfd not set by
userspace.  When log_ctx for device is created, it is copied to the vq.
This reset was missing.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-02-28 19:42:35 +02:00
Michael S. Tsirkin
86e9424d72 vhost: logging thinko fix
vhost was dong some complex math to get
offset to log at, and got it wrong by a couple of bytes,
while in fact it's simple: get address where we write,
subtract start of buffer, add log base.

Do it this way.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-02-28 19:42:35 +02:00
Jiri Pirko
655ffee284 wireless: convert to use netdev_for_each_mc_addr
also added missed locking in rndis_wlan.c

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 01:44:01 -08:00
Jeff Garzik
9675478bba ethtool: do not set some flags, if others failed
NETIF_F_NTUPLE flag setting introduced a bug:  non-ntuple flags
like LRO may be successfully set, before ioctl(2) returns failure
to userspace.

The set-flags operation should be all-or-none, rather than leaving
things in an inconsistent state prior to reporting failure to
userspace.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 01:40:30 -08:00
Jiri Pirko
6c74651c3b ipoib: returned back addrlen check for mc addresses
Apparently bogus mc address can break IPOIB multicast processing. Therefore
returning the check for addrlen back until this is resolved in bonding (I don't
see any other point from where mc address with non-dev->addr_len length can came
from).

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 01:34:28 -08:00
Masatake YAMATO
cf0aa4e07c netlink: Adding inode field to /proc/net/netlink
The Inode field in /proc/net/{tcp,udp,packet,raw,...} is useful to know the types of
file descriptors associated to a process. Actually lsof utility uses the field.
Unfortunately, unlike /proc/net/{tcp,udp,packet,raw,...}, /proc/net/netlink doesn't have the field.
This patch adds the field to /proc/net/netlink.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 01:29:49 -08:00
Ken Kawasaki
60bbc725b5 axnet_cs: add new id
axnet_cs:
  add new id (corega PCC-TXM)

Signed-off-by: Ken Kawasaki <ken_kawasaki@spring.nifty.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 01:03:05 -08:00
David S. Miller
46976c042b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-next-2.6 2010-02-28 00:57:28 -08:00
David S. Miller
024c378f0b bridge: Make IGMP snooping depend upon BRIDGE.
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:51:42 -08:00
Herbert Xu
d902eee43f bridge: Add multicast count/interval sysfs entries
This patch allows the user to the IGMP parameters related to the
snooping function of the bridge.  This includes various time
values and retransmission limits.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:49:47 -08:00
Herbert Xu
b195167fcf bridge: Add hash elasticity/max sysfs entries
This patch allows the user to control the hash elasticity/max
parameters.  The elasticity setting does not take effect until
the next new multicast group is added.  At which point it is
checked and if after rehashing it still can't be satisfied then
snooping will be disabled.

The max setting on the other hand takes effect immediately.  It
must be a power of two and cannot be set to a value less than the
current number of multicast group entries.  This is the only way
to shrink the multicast hash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:49:46 -08:00
Herbert Xu
561f1103a2 bridge: Add multicast_snooping sysfs toggle
This patch allows the user to disable IGMP snooping completely
through a sysfs toggle.  It also allows the user to reenable
snooping when it has been automatically disabled due to hash
collisions.  If the collisions have not been resolved however
the system will refuse to reenable snooping.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:49:46 -08:00
Herbert Xu
0909e11758 bridge: Add multicast_router sysfs entries
This patch allows the user to forcibly enable/disable ports as
having multicast routers attached.  A port with a multicast router
will receive all multicast traffic.

The value 0 disables it completely.  The default is 1 which lets
the system automatically detect the presence of routers (currently
this is limited to picking up queries), and 2 means that the port
will always receive all multicast traffic.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:49:45 -08:00
Herbert Xu
c4fcb78cf8 bridge: Add multicast data-path hooks
This patch finally hooks up the multicast snooping module to the
data path.  In particular, all multicast packets passing through
the bridge are fed into the module and switched by it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:49:45 -08:00
Herbert Xu
3fe2d7c70b bridge: Add multicast start/stop hooks
This patch hooks up the bridge start/stop and add/delete/disable
port functions to the new multicast module.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:49:38 -08:00
Herbert Xu
5cb5e947d8 bridge: Add multicast forwarding functions
This patch adds code to perform selective multicast forwarding.

We forward multicast traffic to a set of ports plus all multicast
router ports.  In order to avoid duplications among these two
sets of ports, we order all ports by the numeric value of their
pointers.  The two lists are then walked in lock-step to eliminate
duplicates.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:48:45 -08:00
Herbert Xu
eb1d164143 bridge: Add core IGMP snooping support
This patch adds the core functionality of IGMP snooping support
without actually hooking it up.  So this patch should be a no-op
as far as the bridge's external behaviour is concerned.

All the new code and data is controlled by the Kconfig option
BRIDGE_IGMP_SNOOPING.  A run-time toggle is also available.

The multicast switching is done using an hash table that is
lockless on the read-side through RCU.  On the write-side the
new multicast_lock is used for all operations.  The hash table
supports dynamic growth/rehashing.

The hash table will be rehashed if any chain length exceeds a
preset limit.  If rehashing does not reduce the maximum chain
length then snooping will be disabled.

These features may be added in future (in no particular order):

* IGMPv3 source support
* Non-querier router detection
* IPv6

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:48:45 -08:00
Herbert Xu
025d89c27f bridge: Split may_deliver/deliver_clone out of br_flood
This patch moves the main loop body in br_flood into the function
may_deliver.  The code that clones an skb and delivers it is moved
into the deliver_clone function.

This allows this to be reused by the future multicast forward
function.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:48:44 -08:00
Herbert Xu
6088a539d8 bridge: Use BR_INPUT_SKB_CB on xmit path
this patch makes BR_INPUT_SKB_CB available on the xmit path so
that we could avoid passing the br pointer around for the purpose
of collecting device statistics.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:48:44 -08:00
Herbert Xu
b33084be19 bridge: Avoid unnecessary clone on forward path
When the packet is delivered to the local bridge device we may
end up cloning it unnecessarily if no bridge port can receive
the packet in br_flood.

This patch avoids this by moving the skb_clone into br_flood.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:48:43 -08:00
Herbert Xu
68b7c895be bridge: Allow tail-call on br_pass_frame_up
This patch allows tail-call on the call to br_pass_frame_up
in br_handle_frame_finish.  This is now possible because of the
previous patch to call br_pass_frame_up last.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:48:43 -08:00
Herbert Xu
87557c18ac bridge: Do br_pass_frame_up after other ports
At the moment we deliver to the local bridge port via the function
br_pass_frame_up before all other ports.  There is no requirement
for this.

For the purpose of IGMP snooping, it would be more convenient if
we did the local port last.  Therefore this patch rearranges the
bridge input processing so that the local bridge port gets to see
the packet last (if at all).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:48:42 -08:00
Johann Felix Soden
f6e623a65c Bluetooth: Fix out of scope variable access in hci_sock_cmsg()
The pointer data can point to the variable ctv.
Access to data happens when ctv is already out of scope.

Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-02-28 00:47:30 -08:00
Matt Carlson
4181b2c8bc tg3: Remove now useless VPD code
Now that the VPD searching code is abstracted away, the outer loop used
to detect the read-only large resource data type section is useless.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:34 -08:00
Matt Carlson
df25bc38b5 bnx2: Remove now useless VPD code
Now that the VPD searching code is abstracted away, the outer loop used
to detect the read-only large resource data type section is useless.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:33 -08:00
Matt Carlson
4067a8541d pci: Add helper to search for VPD keywords
This patch adds the pci_vpd_find_info_keyword() helper function to
find information field keywords within read-only and read-write large
resource data type sections.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:33 -08:00