Commit graph android_kernel_sony_sdm845/net/atm
Message SHA1
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial updates from Jiri Kosina:
 "As usual, it's mostly typo fixes, redundant code elimination and some
  documentation updates."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (57 commits)
  edac, mips: don't change code that has been removed in edac/mips tree
  xtensa: Change mail addresses of Hannes Weiner and Oskar Schirmer
  lib: Change mail address of Oskar Schirmer
  net: Change mail address of Oskar Schirmer
  arm/m68k: Change mail address of Sebastian Hess
  i2c: Change mail address of Oskar Schirmer
  net: Fix tcp_build_and_update_options comment in struct tcp_sock
  atomic64_32.h: fix parameter naming mismatch
  Kconfig: replace "--- help ---" with "---help---"
  c2port: fix bogus Kconfig "default no"
  edac: Fix spelling errors.
  qla1280: Remove redundant NULL check before release_firmware() call
  remoteproc: remove redundant NULL check before release_firmware()
  qla2xxx: Remove redundant NULL check before release_firmware() call.
  aic94xx: Get rid of redundant NULL check before release_firmware() call
  tehuti: delete redundant NULL check before release_firmware()
  qlogic: get rid of a redundant test for NULL before call to release_firmware()
  bna: remove redundant NULL test before release_firmware()
  tg3: remove redundant NULL test before release_firmware() call
  typhoon: get rid of redundant conditional before all to release_firmware()
  ...

Linus Torvalds   commited 2012-05-22 19:22:50 -07:00
e8650a0823
atm: remove the coupling to token ring support
The token ring support is going away, so decouple
the atm support from it in advance.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

Paul Gortmaker   commited 2012-05-15 20:14:35 -04:00
60eea6cf29
net: Convert net_ratelimit uses to net_<level>_ratelimited
Standardize the net core ratelimited logging functions.

Coalesce formats, align arguments.
Change a printk then vprintk sequence to use printf extension %pV.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Joe Perches   authored and   David S. Miller   commited 2012-05-15 13:45:03 -04:00
e87cc4728f
atm: Convert compare_ether_addr to ether_addr_equal
Use the new bool function ether_addr_equal to add
some clarity and reduce the likelihood for misuse
of compare_ether_addr for sorting.

Done via cocci script:

$ cat compare_ether_addr.cocci
@@
expression a,b;
@@
-	!compare_ether_addr(a, b)
+	ether_addr_equal(a, b)

@@
expression a,b;
@@
-	compare_ether_addr(a, b)
+	!ether_addr_equal(a, b)

@@
expression a,b;
@@
-	!ether_addr_equal(a, b) == 0
+	ether_addr_equal(a, b)

@@
expression a,b;
@@
-	!ether_addr_equal(a, b) != 0
+	!ether_addr_equal(a, b)

@@
expression a,b;
@@
-	ether_addr_equal(a, b) == 0
+	!ether_addr_equal(a, b)

@@
expression a,b;
@@
-	ether_addr_equal(a, b) != 0
+	ether_addr_equal(a, b)

@@
expression a,b;
@@
-	!!ether_addr_equal(a, b)
+	ether_addr_equal(a, b)

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Joe Perches   authored and   David S. Miller   commited 2012-05-09 20:49:17 -04:00
150238ebb4
net: cleanup unsigned to unsigned int
Use of "unsigned int" is preferred to bare "unsigned" in net tree.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Eric Dumazet   authored and   David S. Miller   commited 2012-04-15 12:44:40 -04:00
95c9617472
pppoatm: Fix excessive queue bloat
We discovered that PPPoATM has an excessively deep transmit queue. A
queue the size of the default socket send buffer (wmem_default) is
maintained between the PPP generic core and the ATM device.

Fix it to queue a maximum of *two* packets. The one the ATM device is
currently working on, and one more for the ATM driver to process
immediately in its TX done interrupt handler. The PPP core is designed
to feed packets to the channel with minimal latency, so that really
ought to be enough to keep the ATM device busy.

While we're at it, fix the fact that we were triggering the wakeup
tasklet on *every* pppoatm_pop() call. The comment saying "this is
inefficient, but doing it right is too hard" turns out to be overly
pessimistic... I think :)

On machines like the Traverse Geos, with a slow Geode CPU and two
high-speed ADSL2+ interfaces, there were reports of extremely high CPU
usage which could partly be attributed to the extra wakeups.

(The wakeup handling could actually be made a whole lot easier if we
 stop checking sk->sk_sndbuf altogether. Given that we now only queue
 *two* packets ever, one wonders what the point is. As it is, you could
 already deadlock the thing by setting the sk_sndbuf to a value lower
 than the MTU of the device, and it'd just block for ever.)

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

David Woodhouse   authored and   David S. Miller   commited 2012-04-13 13:03:45 -04:00
9d02daf754
Merge branch 'master' into for-next
Merge with latest Linus' tree, as I have incoming patches
that fix code that is newer than current HEAD of for-next.

Conflicts:
	drivers/net/ethernet/realtek/r8169.c

Jiri Kosina   commited 2012-04-08 21:48:52 +02:00
e75d660672
atm: fix comments
Signed-off-by: Alexandra Vintila <andavintila@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Alexandra Vintila   authored and   Jiri Kosina   commited 2012-04-05 17:21:11 -07:00
61282f3792
Remove all #inclusions of asm/system.h
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`

Signed-off-by: David Howells <dhowells@redhat.com>

David Howells   commited 2012-03-28 18:30:03 +01:00
9ffc93f203
ppp: Replace uses of <linux/if_ppp.h> with <linux/ppp-ioctl.h>
Since all that include/linux/if_ppp.h does is #include <linux/ppp-ioctl.h>,
this replaces the occurrences of #include <linux/if_ppp.h> with
#include <linux/ppp-ioctl.h>.

It also corrects an error in Documentation/networking/l2tp.txt, where
it referenced include/linux/if_ppp.h as the source of some definitions
that are actually now defined in include/linux/if_pppol2tp.h.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Paul Mackerras   authored and   David S. Miller   commited 2012-03-04 20:41:38 -05:00
4b32da2bcf
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/sfc/rx.c

Overlapping changes in drivers/net/ethernet/sfc/rx.c, one to change
the rx_buf->is_page boolean into a set of u16 flags, and another to
adjust how ->ip_summed is initialized.

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2012-02-26 21:55:51 -05:00
ff4783ce78
atm: clip: remove clip_tbl
Commit 32092ecf06 (atm: clip: Use device neigh support on top of
"arp_tbl".) introduced a bug since clip_tbl is zeroed : Crash occurs in
__neigh_for_each_release()

idle_timer_check() must use instead arp_tbl and neigh_check_cb() should
ignore non clip neighbours.

Idea from David Miller.

Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>

Eric Dumazet   authored and   David S. Miller   commited 2012-02-22 02:23:25 -05:00
597cdbc223
atm: clip: Convert over to dst_neigh_lookup().
CLIP only support ipv4, and this is evidenced by the fact that it
is a device specific extension of arp_tbl, so this conversion is
pretty straightforward.

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2012-02-01 17:23:11 -05:00
7161c76f0d
net: Rename dst_get_neighbour{, _raw} to dst_get_neighbour_noref{, _raw}.
To reflect the fact that a refrence is not obtained to the
resulting neighbour entry.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Roland Dreier <roland@purestorage.com>

David Miller   authored and   David S. Miller   commited 2011-12-05 15:20:19 -05:00
2721745501
atm: clip: Remove code commented out since eternity.
Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2011-12-02 14:27:11 -05:00
340e8dc1fb
atm: clip: Use device neigh support on top of "arp_tbl".
Instead of instantiating an entire new neigh_table instance
just for ATM handling, use the neigh device private facility.

Signed-off-by: David S. Miller <davem@davemloft.net>

David Miller   authored and   David S. Miller   commited 2011-11-30 18:51:03 -05:00
32092ecf06
atm: clip: Convert over to neighbour_priv()
Signed-off-by: David S. Miller <davem@davemloft.net>

David Miller   authored and   David S. Miller   commited 2011-11-30 18:46:44 -05:00
869759b9e4
neigh: Do not set tbl->entry_size in ipv4/ipv6 neigh tables.
Let the core self-size the neigh entry based upon the key length.

Signed-off-by: David S. Miller <davem@davemloft.net>

David Miller   authored and   David S. Miller   commited 2011-11-30 18:46:43 -05:00
76cc714ed5
neigh: Add infrastructure for allocating device neigh privates.
netdev->neigh_priv_len records the private area length.

This will trigger for neigh_table objects which set tbl->entry_size
to zero, and the first instances of this will be forthcoming.

Signed-off-by: David S. Miller <davem@davemloft.net>

David Miller   authored and   David S. Miller   commited 2011-11-30 18:46:43 -05:00
596b9b68ef
atm: br2684: Avoid alignment issues
Use memcmp() instead of cast to u16 when checking the PAD field.

Signed-off-by: Pascal Hambourg <pascal@plouf.fr.eu.org>
Signed-off-by: chas williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pascal Hambourg   authored and   David S. Miller   commited 2011-11-29 00:28:06 -05:00
befc93fe76
atm: br2684: Make headroom and hard_header_len depend on the payload type
Routed payload requires less headroom than bridged payload.
So do not reallocate headroom if not needed.
Also, add worst case AAL5 overhead to netdev->hard_header_len.

Signed-off-by: Pascal Hambourg <pascal@plouf.fr.eu.org>
Signed-off-by: chas williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pascal Hambourg   authored and   David S. Miller   commited 2011-11-29 00:28:06 -05:00
9e667b2988
atm: eliminate atm_guess_pdu2truesize()
Signed-off-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>

chas williams - CONTRACTOR   authored and   David S. Miller   commited 2011-11-26 16:40:30 -05:00
49f5ed4250
atm: Allow MSG_PEEK for atm sockets
Now that the vcc backends do the right thing with respect the receive
queue on registration, allow MSK_PEEK for atm sockets.

This allows a userspace program to inspect the packets and decide what
backend to use to handle them.

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jorge Boncompte [DTI2]   authored and   David S. Miller   commited 2011-11-22 16:15:49 -05:00
40ba84993d
atm: Introduce vcc_process_recv_queue
This function moves the implementation found in the clip and br2684
modules to common code, correctly unlinks the skb from the queue
before pushing it and makes pppoatm use it.

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jorge Boncompte [DTI2]   authored and   David S. Miller   commited 2011-11-22 16:15:42 -05:00
4e55f57858
atm: clip: move clip_devs check to clip_push
This will allow further cleanup.

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jorge Boncompte [DTI2]   authored and   David S. Miller   commited 2011-11-22 16:15:34 -05:00
3b829366cc
atm: clip: Don't move counters backwards
I don't see the point on substracting the skb len from the netdev
stats.

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jorge Boncompte [DTI2]   authored and   David S. Miller   commited 2011-11-22 16:15:28 -05:00
ada22aa563
atm: br2684: Do not move counters backwards
This snippet has caused several bugs in the past, and I don't see the
point on substracting the skb len from netdev stats.

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jorge Boncompte [DTI2]   authored and   David S. Miller   commited 2011-11-22 16:15:22 -05:00
fe685b8046
neigh: new unresolved queue limits
Le mercredi 09 novembre 2011 à 16:21 -0500, David Miller a écrit :
> From: David Miller <davem@davemloft.net>
> Date: Wed, 09 Nov 2011 16:16:44 -0500 (EST)
>
> > From: Eric Dumazet <eric.dumazet@gmail.com>
> > Date: Wed, 09 Nov 2011 12:14:09 +0100
> >
> >> unres_qlen is the number of frames we are able to queue per unresolved
> >> neighbour. Its default value (3) was never changed and is responsible
> >> for strange drops, especially if IP fragments are used, or multiple
> >> sessions start in parallel. Even a single tcp flow can hit this limit.
> >  ...
> >
> > Ok, I've applied this, let's see what happens :-)
>
> Early answer, build fails.
>
> Please test build this patch with DECNET enabled and resubmit.  The
> decnet neigh layer still refers to the removed ->queue_len member.
>
> Thanks.

Ouch, this was fixed on one machine yesterday, but not the other one I
used this morning, sorry.

[PATCH V5 net-next] neigh: new unresolved queue limits

unres_qlen is the number of frames we are able to queue per unresolved
neighbour. Its default value (3) was never changed and is responsible
for strange drops, especially if IP fragments are used, or multiple
sessions start in parallel. Even a single tcp flow can hit this limit.

$ arp -d 192.168.20.108 ; ping -c 2 -s 8000 192.168.20.108
PING 192.168.20.108 (192.168.20.108) 8000(8028) bytes of data.
8008 bytes from 192.168.20.108: icmp_seq=2 ttl=64 time=0.322 ms

Signed-off-by: David S. Miller <davem@davemloft.net>

Eric Dumazet   authored and   David S. Miller   commited 2011-11-14 00:47:54 -05:00
8b5c171bb3
net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules
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 <paul.gortmaker@windriver.com>

Paul Gortmaker   commited 2011-10-31 19:30:30 -04:00
bc3b2d7fb9
Merge branch 'master' of github.com:davem330/net
Conflicts:
	MAINTAINERS
	drivers/net/Kconfig
	drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
	drivers/net/ethernet/broadcom/tg3.c
	drivers/net/wireless/iwlwifi/iwl-pci.c
	drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
	drivers/net/wireless/rt2x00/rt2800usb.c
	drivers/net/wireless/wl12xx/main.c

David S. Miller   commited 2011-09-22 03:23:13 -04:00
8decf86879
atm: br2684: Fix oops due to skb->dev being NULL
This oops have been already fixed with commit

    27141666b6

    atm: [br2684] Fix oops due to skb->dev being NULL

    It happens that if a packet arrives in a VC between the call to open it on
    the hardware and the call to change the backend to br2684, br2684_regvcc
    processes the packet and oopses dereferencing skb->dev because it is
    NULL before the call to br2684_push().

but have been introduced again with commit

    b6211ae7f2

    atm: Use SKB queue and list helpers instead of doing it by-hand.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Daniel Schwierzeck   authored and   David S. Miller   commited 2011-08-20 14:13:05 -07:00
fbe5e29ec1
net: remove use of ndo_set_multicast_list in drivers
replace it by ndo_set_rx_mode

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jiri Pirko   authored and   David S. Miller   commited 2011-08-17 20:22:03 -07:00
afc4b13df1
atm: br2864: sent packets truncated in VC routed mode
Reported-by: Pascal Hambourg <pascal@plouf.fr.eu.org>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>

Chas Williams   authored and   David S. Miller   commited 2011-08-01 17:56:14 -07:00
a08af810cd
atomic: use <linux/atomic.h>
This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>

Signed-off-by: Arun Sharma <asharma@fb.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Arun Sharma   authored and   Linus Torvalds   commited 2011-07-26 16:49:47 -07:00
60063497a9
net: Abstract dst->neighbour accesses behind helpers.
dst_{get,set}_neighbour()

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2011-07-17 23:11:35 -07:00
69cce1d140
neigh: Pass neighbour entry to output ops.
This will get us closer to being able to do "neigh stuff"
completely independent of the underlying dst_entry for
protocols (ipv4/ipv6) that wish to do so.

We will also be able to make dst entries neigh-less.

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2011-07-17 23:11:17 -07:00
8f40b161de
neigh: Kill ndisc_ops->queue_xmit
It is always dev_queue_xmit().

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2011-07-16 18:30:59 -07:00
542d4d685f
neigh: Kill neigh_ops->hh_output
It's always dev_queue_xmit().

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2011-07-16 17:39:57 -07:00
47ec132a40
net: Remove casts of void *
Unnecessary casts of void * clutter the code.

These are the remainder casts after several specific
patches to remove netdev_priv and dev_priv.

Done via coccinelle script:

$ cat cast_void_pointer.cocci
@@
type T;
T *pt;
void *pv;
@@

- pt = (T *)pv;
+ pt = pv;

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>

Joe Perches   authored and   David S. Miller   commited 2011-06-16 23:19:27 -04:00
ea11073387
net: remove interrupt.h inclusion from netdevice.h
* remove interrupt.g inclusion from netdevice.h -- not needed
* fixup fallout, add interrupt.h and hardirq.h back where needed.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Alexey Dobriyan   authored and   David S. Miller   commited 2011-06-06 22:55:11 -07:00
a6b7a40786
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  net: Kill ratelimit.h dependency in linux/net.h
  net: Add linux/sysctl.h includes where needed.
  net: Kill ether_table[] declaration.
  inetpeer: fix race in unused_list manipulations
  atm: expose ATM device index in sysfs
  IPVS: bug in ip_vs_ftp, same list heaad used in all netns.
  bug.h: Move ratelimit warn interfaces to ratelimit.h
  bonding: cleanup module option descriptions
  net:8021q:vlan.c Fix pr_info to just give the vlan fullname and version.
  net: davinci_emac: fix dev_err use at probe
  can: convert to %pK for kptr_restrict support
  net: fix ETHTOOL_SFEATURES compatibility with old ethtool_ops.set_flags
  netfilter: Fix several warnings in compat_mtw_from_user().
  netfilter: ipset: fix ip_set_flush return code
  netfilter: ipset: remove unused variable from type_pf_tdel()
  netfilter: ipset: Use proper timeout value to jiffies conversion

Linus Torvalds   commited 2011-05-27 11:16:27 -07:00
10799db60c
atm: expose ATM device index in sysfs
It's currently exposed only through /proc which, besides requiring
screen-scraping, doesn't allow userspace to distinguish between two
identical ATM adapters with different ATM indexes.  The ATM device index
is required when using PPPoATM on a system with multiple ATM adapters.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: David Woodhouse <dwmw2@infradead.org>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

Dan Williams   authored and   David S. Miller   commited 2011-05-27 13:07:21 -04:00
e7a46b4d08
Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  gfs2: Drop __TIME__ usage
  isdn/diva: Drop __TIME__ usage
  atm: Drop __TIME__ usage
  dlm: Drop __TIME__ usage
  wan/pc300: Drop __TIME__ usage
  parport: Drop __TIME__ usage
  hdlcdrv: Drop __TIME__ usage
  baycom: Drop __TIME__ usage
  pmcraid: Drop __DATE__ usage
  edac: Drop __DATE__ usage
  rio: Drop __DATE__ usage
  scsi/wd33c93: Drop __TIME__ usage
  scsi/in2000: Drop __TIME__ usage
  aacraid: Drop __TIME__ usage
  media/cx231xx: Drop __TIME__ usage
  media/radio-maxiradio: Drop __TIME__ usage
  nozomi: Drop __TIME__ usage
  cyclades: Drop __TIME__ usage

Linus Torvalds   commited 2011-05-26 13:19:00 -07:00
b7c2f03628
atm: Drop __TIME__ usage
The kernel already prints its build timestamp during boot, no need to
repeat it in random drivers and produce different object files each
time.

Acked-by: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Michal Marek <mmarek@suse.cz>

Michal Marek   commited 2011-05-26 09:46:47 +02:00
36a9f77e50
net: convert %p usage to %pK
The %pK format specifier is designed to hide exposed kernel pointers,
specifically via /proc interfaces.  Exposing these pointers provides an
easy target for kernel write vulnerabilities, since they reveal the
locations of writable structures containing easily triggerable function
pointers.  The behavior of %pK depends on the kptr_restrict sysctl.

If kptr_restrict is set to 0, no deviation from the standard %p behavior
occurs.  If kptr_restrict is set to 1, the default, if the current user
(intended to be a reader via seq_printf(), etc.) does not have CAP_SYSLOG
(currently in the LSM tree), kernel pointers using %pK are printed as 0's.
 If kptr_restrict is set to 2, kernel pointers using %pK are printed as
0's regardless of privileges.  Replacing with 0's was chosen over the
default "(null)", which cannot be parsed by userland %p, which expects
"(nil)".

The supporting code for kptr_restrict and %pK are currently in the -mm
tree.  This patch converts users of %p in net/ to %pK.  Cases of printing
pointers to the syslog are not covered, since this would eliminate useful
information for postmortem debugging and the reading of the syslog is
already optionally protected by the dmesg_restrict sysctl.

Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: James Morris <jmorris@namei.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Thomas Graf <tgraf@infradead.org>
Cc: Eugene Teo <eugeneteo@kernel.org>
Cc: Kees Cook <kees.cook@canonical.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Eric Paris <eparis@parisplace.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Dan Rosenberg   authored and   David S. Miller   commited 2011-05-24 01:13:12 -04:00
71338aa7d0
atm: lec: Fix set-but-unused variables.
The variable 'eth' is set but unused in lec_handle_bridge().  Also,
the variable 'priv' is set but unused in lane_module_cleanup().

Just kill them off.

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2011-04-17 00:48:36 -07:00
9e5ebaf852
Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6
* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6:
  Fix common misspellings

Linus Torvalds   commited 2011-04-07 11:14:49 -07:00
42933bac11
Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>

Lucas De Marchi   commited 2011-03-31 11:26:23 -03:00
25985edced
atm/solos-pci: Don't flap VCs when carrier state changes
Don't flap VCs when carrier state changes; higher-level protocols
can detect loss of connectivity and act accordingly. This is more
consistent with how other network interfaces work.

We no longer use release_vccs() so we can delete it.

release_vccs() was duplicated from net/atm/common.c; make the
corresponding function exported, since other code duplicates it
and could leverage it if it were public.

Signed-off-by: Philip A. Prindeville <philipp@redfish-solutions.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Philip A. Prindeville   authored and   David S. Miller   commited 2011-03-30 16:53:38 -07:00
c031235b39
ipv4: Create and use route lookup helpers.
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 <davem@davemloft.net>

David S. Miller   commited 2011-03-12 15:08:42 -08:00
78fbfd8a65