20 Dec, 2011
1 commit
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DaveM said:
Please, this kind of stuff rots forever and not using bool properly
drives me crazy.Joe Perches gave me the spatch script:
@@
bool b;
@@
-b = 0
+b = false
@@
bool b;
@@
-b = 1
+b = trueI merely installed coccinelle, read the documentation and took credit.
Signed-off-by: Rusty Russell
Signed-off-by: David S. Miller
22 Nov, 2011
1 commit
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The semantic patch that makes this change is available
in scripts/coccinelle/api/memdup.cocci.Signed-off-by: Thomas Meyer
Signed-off-by: David S. Miller
01 Nov, 2011
1 commit
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These files are non modular, but need to export symbols using
the macros now living in export.h -- call out the include so
that things won't break when we remove the implicit presence
of module.h from everywhere.Signed-off-by: Paul Gortmaker
20 May, 2011
5 commits
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This is identical to the case I fixed in rxrpc_get_peer()
Signed-off-by: David S. Miller
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I backed off from trying to just eliminate this variable, since
transforming atomic_inc_return() into atomic_inc() takes away
the memory barriers.Signed-off-by: David S. Miller
-
Signed-off-by: David S. Miller
-
Signed-off-by: David S. Miller
-
Signed-off-by: David S. Miller
04 May, 2011
1 commit
-
Signed-off-by: David S. Miller
17 Mar, 2011
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1480 commits)
bonding: enable netpoll without checking link status
xfrm: Refcount destination entry on xfrm_lookup
net: introduce rx_handler results and logic around that
bonding: get rid of IFF_SLAVE_INACTIVE netdev->priv_flag
bonding: wrap slave state work
net: get rid of multiple bond-related netdevice->priv_flags
bonding: register slave pointer for rx_handler
be2net: Bump up the version number
be2net: Copyright notice change. Update to Emulex instead of ServerEngines
e1000e: fix kconfig for crc32 dependency
netfilter ebtables: fix xt_AUDIT to work with ebtables
xen network backend driver
bonding: Improve syslog message at device creation time
bonding: Call netif_carrier_off after register_netdevice
bonding: Incorrect TX queue offset
net_sched: fix ip_tos2prio
xfrm: fix __xfrm_route_forward()
be2net: Fix UDP packet detected status in RX compl
Phonet: fix aligned-mode pipe socket buffer header reserve
netxen: support for GbE port settings
...Fix up conflicts in drivers/staging/brcm80211/brcmsmac/wl_mac80211.c
with the staging updates.
13 Mar, 2011
1 commit
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The idea here is this minimizes the number of places one has to edit
in order to make changes to how flows are defined and used.Signed-off-by: David S. Miller
08 Mar, 2011
1 commit
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Add a key type operation to permit the key type to vet the description of a new
key that key_alloc() is about to allocate. The operation may reject the
description if it wishes with an error of its choosing. If it does this, the
key will not be allocated.Signed-off-by: David Howells
Reviewed-by: Mimi Zohar
Signed-off-by: James Morris
04 Mar, 2011
2 commits
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Conflicts:
drivers/net/bnx2x/bnx2x.h -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits)
MAINTAINERS: Add Andy Gospodarek as co-maintainer.
r8169: disable ASPM
RxRPC: Fix v1 keys
AF_RXRPC: Handle receiving ACKALL packets
cnic: Fix lost interrupt on bnx2x
cnic: Prevent status block race conditions with hardware
net: dcbnl: check correct ops in dcbnl_ieee_set()
e1000e: disable broken PHY wakeup for ICH10 LOMs, use MAC wakeup instead
igb: fix sparse warning
e1000: fix sparse warning
netfilter: nf_log: avoid oops in (un)bind with invalid nfproto values
dccp: fix oops on Reset after close
ipvs: fix dst_lock locking on dest update
davinci_emac: Add Carrier Link OK check in Davinci RX Handler
bnx2x: update driver version to 1.62.00-6
bnx2x: properly calculate lro_mss
bnx2x: perform statistics "action" before state transition.
bnx2x: properly configure coefficients for MinBW algorithm (NPAR mode).
bnx2x: Fix ethtool -t link test for MF (non-pmf) devices.
bnx2x: Fix nvram test for single port devices.
...
03 Mar, 2011
2 commits
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The OpenAFS server is now sending ACKALL packets, so we need to handle them.
Otherwise we report a protocol error and abort.Signed-off-by: David Howells
Signed-off-by: David S. Miller -
Instead of on the stack.
Signed-off-by: David S. Miller
26 Feb, 2011
1 commit
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With slab poisoning enabled, I see the following oops:
Unable to handle kernel paging request for data at address 0x6b6b6b6b6b6b6b73
...
NIP [c0000000006bc61c] .rxrpc_destroy+0x44/0x104
LR [c0000000006bc618] .rxrpc_destroy+0x40/0x104
Call Trace:
[c0000000feb2bc00] [c0000000006bc618] .rxrpc_destroy+0x40/0x104 (unreliable)
[c0000000feb2bc90] [c000000000349b2c] .key_cleanup+0x1a8/0x20c
[c0000000feb2bd40] [c0000000000a2920] .process_one_work+0x2f4/0x4d0
[c0000000feb2be00] [c0000000000a2d50] .worker_thread+0x254/0x468
[c0000000feb2bec0] [c0000000000a868c] .kthread+0xbc/0xc8
[c0000000feb2bf90] [c000000000020e00] .kernel_thread+0x54/0x70We aren't initialising token->next, but the code in destroy_context relies
on the list being NULL terminated. Use kzalloc to zero out all the fields.Signed-off-by: Anton Blanchard
Signed-off-by: David Howells
Signed-off-by: Linus Torvalds
15 Jan, 2011
1 commit
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rxrpc_workqueue isn't depended upon while reclaiming memory. Convert
to alloc_workqueue() without WQ_MEM_RECLAIM.Signed-off-by: Tejun Heo
Signed-off-by: David Howells
Cc: linux-afs@lists.infradead.org
Signed-off-by: Linus Torvalds
23 Nov, 2010
1 commit
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Changed Makefile to use -y instead of -objs
because -objs is deprecated and not mentioned in
Documentation/kbuild/makefiles.txt.Signed-off-by: Tracey Dent
Signed-off-by: David S. Miller
18 Nov, 2010
1 commit
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Use the macros defined for the members of flowi to clean the code up.
Signed-off-by: Changli Gao
Signed-off-by: David S. Miller
13 Aug, 2010
1 commit
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Add a dummy printk function for the maintenance of unused printks through gcc
format checking, and also so that side-effect checking is maintained too.Signed-off-by: David Howells
Signed-off-by: Linus Torvalds
05 Aug, 2010
1 commit
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RxRPC can potentially deadlock as rxrpc_resend_time_expired() wants to get
call->state_lock so that it can alter the state of an RxRPC call. However, its
caller (call_timer_fn()) has an apparent lock on the timer struct.The problem is that rxrpc_resend_time_expired() isn't permitted to lock
call->state_lock as this could cause a deadlock against rxrpc_send_abort() as
that takes state_lock and then attempts to delete the resend timer by calling
del_timer_sync().The deadlock can occur because del_timer_sync() will sit there forever waiting
for rxrpc_resend_time_expired() to return, but the latter may then wait for
call->state_lock, which rxrpc_send_abort() holds around del_timer_sync()...This leads to a warning appearing in the kernel log that looks something like
the attached.It should be sufficient to simply dispense with the locks. It doesn't matter
if we set the resend timer expired event bit and queue the event processor
whilst we're changing state to one where the resend timer is irrelevant as the
event can just be ignored by the processor thereafter.=======================================================
[ INFO: possible circular locking dependency detected ]
2.6.35-rc3-cachefs+ #115
-------------------------------------------------------
swapper/0 is trying to acquire lock:
(&call->state_lock){++--..}, at: [] rxrpc_resend_time_expired+0x56/0x96 [af_rxrpc]but task is already holding lock:
(&call->resend_timer){+.-...}, at: [] run_timer_softirq+0x182/0x2a5which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&call->resend_timer){+.-...}:
[] __lock_acquire+0x889/0x8fa
[] lock_acquire+0x57/0x6d
[] del_timer_sync+0x3c/0x86
[] rxrpc_send_abort+0x50/0x97 [af_rxrpc]
[] rxrpc_kernel_abort_call+0xa1/0xdd [af_rxrpc]
[] afs_deliver_to_call+0x129/0x368 [kafs]
[] afs_process_async_call+0x54/0xff [kafs]
[] worker_thread+0x1ef/0x2e2
[] kthread+0x7a/0x82
[] kernel_thread_helper+0x4/0x10-> #0 (&call->state_lock){++--..}:
[] validate_chain+0x727/0xd23
[] __lock_acquire+0x889/0x8fa
[] lock_acquire+0x57/0x6d
[] _raw_read_lock_bh+0x34/0x43
[] rxrpc_resend_time_expired+0x56/0x96 [af_rxrpc]
[] run_timer_softirq+0x1f3/0x2a5
[] __do_softirq+0xa2/0x13e
[] call_softirq+0x1c/0x28
[] do_softirq+0x38/0x80
[] irq_exit+0x45/0x47
[] smp_apic_timer_interrupt+0x88/0x96
[] apic_timer_interrupt+0x13/0x20
[] cpu_idle+0x4d/0x83
[] start_secondary+0x1bd/0x1c1other info that might help us debug this:
1 lock held by swapper/0:
#0: (&call->resend_timer){+.-...}, at: [] run_timer_softirq+0x182/0x2a5stack backtrace:
Pid: 0, comm: swapper Not tainted 2.6.35-rc3-cachefs+ #115
Call Trace:
[] print_circular_bug+0xae/0xbd
[] validate_chain+0x727/0xd23
[] __lock_acquire+0x889/0x8fa
[] ? mark_lock+0x42f/0x51f
[] lock_acquire+0x57/0x6d
[] ? rxrpc_resend_time_expired+0x56/0x96 [af_rxrpc]
[] _raw_read_lock_bh+0x34/0x43
[] ? rxrpc_resend_time_expired+0x56/0x96 [af_rxrpc]
[] rxrpc_resend_time_expired+0x56/0x96 [af_rxrpc]
[] run_timer_softirq+0x1f3/0x2a5
[] ? run_timer_softirq+0x182/0x2a5
[] ? rxrpc_resend_time_expired+0x0/0x96 [af_rxrpc]
[] ? __do_softirq+0x69/0x13e
[] __do_softirq+0xa2/0x13e
[] call_softirq+0x1c/0x28
[] do_softirq+0x38/0x80
[] irq_exit+0x45/0x47
[] smp_apic_timer_interrupt+0x88/0x96
[] apic_timer_interrupt+0x13/0x20
[] ? __atomic_notifier_call_chain+0x0/0x86
[] ? mwait_idle+0x6e/0x78
[] ? mwait_idle+0x65/0x78
[] cpu_idle+0x4d/0x83
[] start_secondary+0x1bd/0x1c1Signed-off-by: David Howells
Signed-off-by: David S. Miller
11 Jun, 2010
1 commit
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remove useless union keyword in rtable, rt6_info and dn_route.
Since there is only one member in a union, the union keyword isn't useful.
Signed-off-by: Changli Gao
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
02 May, 2010
1 commit
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sk_callback_lock rwlock actually protects sk->sk_sleep pointer, so we
need two atomic operations (and associated dirtying) per incoming
packet.RCU conversion is pretty much needed :
1) Add a new structure, called "struct socket_wq" to hold all fields
that will need rcu_read_lock() protection (currently: a
wait_queue_head_t and a struct fasync_struct pointer).[Future patch will add a list anchor for wakeup coalescing]
2) Attach one of such structure to each "struct socket" created in
sock_alloc_inode().3) Respect RCU grace period when freeing a "struct socket_wq"
4) Change sk_sleep pointer in "struct sock" by sk_wq, pointer to "struct
socket_wq"5) Change sk_sleep() function to use new sk->sk_wq instead of
sk->sk_sleep6) Change sk_has_sleeper() to wq_has_sleeper() that must be used inside
a rcu_read_lock() section.7) Change all sk_has_sleeper() callers to :
- Use rcu_read_lock() instead of read_lock(&sk->sk_callback_lock)
- Use wq_has_sleeper() to eventually wakeup tasks.
- Use rcu_read_unlock() instead of read_unlock(&sk->sk_callback_lock)8) sock_wake_async() is modified to use rcu protection as well.
9) Exceptions :
macvtap, drivers/net/tun.c, af_unix use integrated "struct socket_wq"
instead of dynamically allocated ones. They dont need rcu freeing.Some cleanups or followups are probably needed, (possible
sk_callback_lock conversion to a spinlock for example...).Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
27 Apr, 2010
1 commit
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Commit aa395145 (net: sk_sleep() helper) missed three files in the
conversion.Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
21 Apr, 2010
1 commit
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Define a new function to return the waitqueue of a "struct sock".
static inline wait_queue_head_t *sk_sleep(struct sock *sk)
{
return sk->sk_sleep;
}Change all read occurrences of sk_sleep by a call to this function.
Needed for a future RCU conversion. sk_sleep wont be a field directly
available.Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
30 Mar, 2010
1 commit
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…it slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
23 Mar, 2010
1 commit
-
alloc_skb() can return NULL.
Signed-off-by: Tetsuo Handa
Signed-off-by: David Howells
Signed-off-by: Linus Torvalds
26 Nov, 2009
1 commit
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Generated with the following semantic patch
@@
struct net *n1;
struct net *n2;
@@
- n1 == n2
+ net_eq(n1, n2)@@
struct net *n1;
struct net *n2;
@@
- n1 != n2
+ !net_eq(n1, n2)applied over {include,net,drivers/net}.
Signed-off-by: Octavian Purdila
Signed-off-by: David S. Miller
06 Nov, 2009
1 commit
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The generic __sock_create function has a kern argument which allows the
security system to make decisions based on if a socket is being created by
the kernel or by userspace. This patch passes that flag to the
net_proto_family specific create function, so it can do the same thing.Signed-off-by: Eric Paris
Acked-by: Arnaldo Carvalho de Melo
Signed-off-by: David S. Miller
13 Oct, 2009
1 commit
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Create a new socket level option to report number of queue overflows
Recently I augmented the AF_PACKET protocol to report the number of frames lost
on the socket receive queue between any two enqueued frames. This value was
exported via a SOL_PACKET level cmsg. AFter I completed that work it was
requested that this feature be generalized so that any datagram oriented socket
could make use of this option. As such I've created this patch, It creates a
new SOL_SOCKET level option called SO_RXQ_OVFL, which when enabled exports a
SOL_SOCKET level cmsg that reports the nubmer of times the sk_receive_queue
overflowed between any two given frames. It also augments the AF_PACKET
protocol to take advantage of this new feature (as it previously did not touch
sk->sk_drops, which this patch uses to record the overflow count). Tested
successfully by me.Notes:
1) Unlike my previous patch, this patch simply records the sk_drops value, which
is not a number of drops between packets, but rather a total number of drops.
Deltas must be computed in user space.2) While this patch currently works with datagram oriented protocols, it will
also be accepted by non-datagram oriented protocols. I'm not sure if thats
agreeable to everyone, but my argument in favor of doing so is that, for those
protocols which aren't applicable to this option, sk_drops will always be zero,
and reporting no drops on a receive queue that isn't used for those
non-participating protocols seems reasonable to me. This also saves us having
to code in a per-protocol opt in mechanism.3) This applies cleanly to net-next assuming that commit
977750076d98c7ff6cbda51858bb5a5894a9d9ab (my af packet cmsg patch) is revertedSigned-off-by: Neil Horman
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
07 Oct, 2009
1 commit
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All usages of structure net_proto_ops should be declared const.
Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller
01 Oct, 2009
1 commit
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This provides safety against negative optlen at the type
level instead of depending upon (sometimes non-trivial)
checks against this sprinkled all over the the place, in
each and every implementation.Based upon work done by Arjan van de Ven and feedback
from Linus Torvalds.Signed-off-by: David S. Miller
21 Sep, 2009
1 commit
-
Signed-off-by: Anand Gadiyar
Signed-off-by: Jiri Kosina
16 Sep, 2009
1 commit
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Use uX rather than uintX_t types for consistency.
Signed-off-by: David Howells
Signed-off-by: David S. Miller
15 Sep, 2009
4 commits
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Parse RxRPC security index 5 type keys (Kerberos 5 tokens).
Signed-off-by: David Howells
Signed-off-by: David S. Miller -
Allow RxRPC keys to be read. This is to allow pioctl() to be implemented in
userspace. RxRPC keys are read out in XDR format.Signed-off-by: David Howells
Signed-off-by: David S. Miller -
Allow add_key() and KEYCTL_INSTANTIATE to accept key payloads in XDR form as
described by openafs-1.4.10/src/auth/afs_token.xg. This provides a way of
passing kaserver, Kerberos 4, Kerberos 5 and GSSAPI keys from userspace, and
allows for future expansion.Signed-off-by: David Howells
Signed-off-by: David S. Miller -
Declare the security index constants symbolically rather than just referring
to them numerically.Signed-off-by: David Howells
Signed-off-by: David S. Miller
06 Aug, 2009
1 commit
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String literals are constant, and usually, we can also tag the array
of pointers const too, moving it to the .rodata section.Signed-off-by: Jan Engelhardt
Signed-off-by: David S. Miller
