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2011-05-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* 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
2011-05-27net: Kill ratelimit.h dependency in linux/net.hDavid S. Miller
Ingo Molnar noticed that we have this unnecessary ratelimit.h dependency in linux/net.h, which hid compilation problems from people doing builds only with CONFIG_NET enabled. Move this stuff out to a seperate net/net_ratelimit.h file and include that in the only two places where this thing is needed. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu>
2011-05-27inetpeer: fix race in unused_list manipulationsEric Dumazet
Several crashes in cleanup_once() were reported in recent kernels. Commit d6cc1d642de9 (inetpeer: various changes) added a race in unlink_from_unused(). One way to avoid taking unused_peers.lock before doing the list_empty() test is to catch 0->1 refcnt transitions, using full barrier atomic operations variants (atomic_cmpxchg() and atomic_inc_return()) instead of previous atomic_inc() and atomic_add_unless() variants. We then call unlink_from_unused() only for the owner of the 0->1 transition. Add a new atomic_add_unless_return() static helper With help from Arun Sharma. Refs: https://bugzilla.kernel.org/show_bug.cgi?id=32772 Reported-by: Arun Sharma <asharma@fb.com> Reported-by: Maximilian Engelhardt <maxi@daemonizer.de> Reported-by: Yann Dupont <Yann.Dupont@univ-nantes.fr> Reported-by: Denys Fedoryshchenko <denys@visp.net.lb> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-27Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] mm: add ZONE_DMA to 31-bit config again [S390] mm: add page fault retry handling [S390] mm: handle kernel caused page fault oom situations [S390] delay: implement ndelay [S390] topology,sched: fix cpu_coregroup_mask/cpu_book_mask definitions [S390] hwsampler: allow cpu hotplug [S390] uaccess: turn __access_ok() into a define [S390] irq: merge irq.c and s390_ext.c [S390] irq: fix service signal external interrupt handling [S390] pfault: always enable service signal interrupt
2011-05-27atm: expose ATM device index in sysfsDan Williams
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>
2011-05-27Merge branch 'pablo/nf-2.6-updates' of git://1984.lsi.us.es/net-2.6David S. Miller
2011-05-27IPVS: bug in ip_vs_ftp, same list heaad used in all netns.Hans Schillstrom
When ip_vs was adapted to netns the ftp application was not adapted in a correct way. However this is a fix to avoid kernel errors. In the long term another solution might be chosen. I.e the ports that the ftp appl, uses should be per netns. Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-05-26Merge branch 'trivial' of ↵Linus Torvalds
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
2011-05-26Merge branches 'core-fixes-for-linus' and 'irq-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: seqlock: Get rid of SEQLOCK_UNLOCKED * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: irq: Remove smp_affinity_list when unregister irq proc
2011-05-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: RDMA/cma: Save PID of ID's owner RDMA/cma: Add support for netlink statistics export RDMA/cma: Pass QP type into rdma_create_id() RDMA: Update exported headers list RDMA/cma: Export enum cma_state in <rdma/rdma_cm.h> RDMA/nes: Add a check for strict_strtoul() RDMA/cxgb3: Don't post zero-byte read if endpoint is going away RDMA/cxgb4: Use completion objects for event blocking IB/srp: Fix integer -> pointer cast warnings IB: Add devnode methods to cm_class and umad_class IB/mad: Return EPROTONOSUPPORT when an RDMA device lacks the QP required IB/uverbs: Add devnode method to set path/mode RDMA/ucma: Add .nodename/.mode to tell userspace where to create device node RDMA: Add netlink infrastructure RDMA: Add error handling to ib_core_init()
2011-05-26bug.h: Move ratelimit warn interfaces to ratelimit.hDavid S. Miller
As reported by Ingo Molnar, we still have configuration combinations where use of the WARN_RATELIMIT interfaces break the build because dependencies don't get met. Instead of going down the long road of trying to make it so that ratelimit.h can get included by kernel.h or asm-generic/bug.h, just move the interface into ratelimit.h and make users have to include that. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
2011-05-26net:8021q:vlan.c Fix pr_info to just give the vlan fullname and version.Justin Mattock
The below patch removes vlan_buggyright and vlan_copyright from vlan_proto_init, so that it prints out just the fullname of vlan and the version number. before: [ 30.438203] 802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com> [ 30.441542] All bugs added by David S. Miller <davem@redhat.com> after: [ 31.513910] 802.1Q VLAN Support v1.8 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> CC: Joe Perches <joe@perches.com> CC: David S. Miller <davem@davemloft.net> CC: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-26can: convert to %pK for kptr_restrict supportOliver Hartkopp
As these pointers have been printed without using %p they were missed in the big network kptr_restrict conversion patch %p -> %pK from Dan Rosenberg. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-26net: fix ETHTOOL_SFEATURES compatibility with old ethtool_ops.set_flagsMichał Mirosław
Current code squashes flags to bool - this makes set_flags fail whenever some ETH_FLAG_* equivalent features are set. Fix this. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-26netfilter: Fix several warnings in compat_mtw_from_user().David Miller
Kill set but not used 'entry_offset'. Add a default case to the switch statement so the compiler can see that we always initialize off and size_kern before using them. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-05-26netfilter: ipset: fix ip_set_flush return codeJozsef Kadlecsik
ip_set_flush returned -EPROTO instead of -IPSET_ERR_PROTOCOL, fixed Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-05-26[S390] irq: merge irq.c and s390_ext.cHeiko Carstens
Merge irq.c and s390_ext.c into irq.c. That way all external interrupt related functions are together. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-05-26atm: Drop __TIME__ usageMichal Marek
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>
2011-05-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfdLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd: net: fix get_net_ns_by_fd for !CONFIG_NET_NS ns proc: Return -ENOENT for a nonexistent /proc/self/ns/ entry. ns: Declare sys_setns in syscalls.h net: Allow setting the network namespace by fd ns proc: Add support for the ipc namespace ns proc: Add support for the uts namespace ns proc: Add support for the network namespace. ns: Introduce the setns syscall ns: proc files for namespace naming policy.
2011-05-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (89 commits) bonding: documentation and code cleanup for resend_igmp bonding: prevent deadlock on slave store with alb mode (v3) net: hold rtnl again in dump callbacks Add Fujitsu 1000base-SX PCI ID to tg3 bnx2x: protect sequence increment with mutex sch_sfq: fix peek() implementation isdn: netjet - blacklist Digium TDM400P via-velocity: don't annotate MAC registers as packed xen: netfront: hold RTNL when updating features. sctp: fix memory leak of the ASCONF queue when free asoc net: make dev_disable_lro use physical device if passed a vlan dev (v2) net: move is_vlan_dev into public header file (v2) bug.h: Fix build with CONFIG_PRINTK disabled. wireless: fix fatal kernel-doc error + warning in mac80211.h wireless: fix cfg80211.h new kernel-doc warnings iwlagn: dbg_fixed_rate only used when CONFIG_MAC80211_DEBUGFS enabled dst: catch uninitialized metrics be2net: hash key for rss-config cmd not set bridge: initialize fake_rtable metrics net: fix __dst_destroy_metrics_generic() ... Fix up trivial conflicts in drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
2011-05-25net: hold rtnl again in dump callbacksEric Dumazet
Commit e67f88dd12f6 (dont hold rtnl mutex during netlink dump callbacks) missed fact that rtnl_fill_ifinfo() must be called with rtnl held. Because of possible deadlocks between two mutexes (cb_mutex and rtnl), its not easy to solve this problem, so revert this part of the patch. It also forgot one rcu_read_unlock() in FIB dump_rules() Add one ASSERT_RTNL() in rtnl_fill_ifinfo() to remind us the rule. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-25sch_sfq: fix peek() implementationEric Dumazet
Since commit eeaeb068f139 (sch_sfq: allow big packets and be fair), sfq_peek() can return a different skb that would be normally dequeued by sfq_dequeue() [ if current slot->allot is negative ] Use generic qdisc_peek_dequeued() instead of custom implementation, to get consistent result. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Jarek Poplawski <jarkao2@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Jesper Dangaard Brouer <hawk@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-25sctp: fix memory leak of the ASCONF queue when free asocWei Yongjun
If an ASCONF chunk is outstanding, then the following ASCONF chunk will be queued for later transmission. But when we free the asoc, we forget to free the ASCONF queue at the same time, this will cause memory leak. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-25net: make dev_disable_lro use physical device if passed a vlan dev (v2)Neil Horman
If the device passed into dev_disable_lro is a vlan, then repoint the dev poniter so that we actually modify the underlying physical device. Signed-of-by: Neil Horman <nhorman@tuxdriver.com> CC: davem@davemloft.net CC: bhutchings@solarflare.com Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-25net: move is_vlan_dev into public header file (v2)Neil Horman
Migrate is_vlan_dev() to if_vlan.h so that core networkig can use it Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: davem@davemloft.net CC: bhutchings@solarflare.com Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-25RDMA/cma: Pass QP type into rdma_create_id()Sean Hefty
The RDMA CM currently infers the QP type from the port space selected by the user. In the future (eg with RDMA_PS_IB or XRC), there may not be a 1-1 correspondence between port space and QP type. For netlink export of RDMA CM state, we want to export the QP type to userspace, so it is cleaner to explicitly associate a QP type to an ID. Modify rdma_create_id() to allow the user to specify the QP type, and use it to make our selections of datagram versus connected mode. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-05-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (23 commits) ceph: fix cap flush race reentrancy libceph: subscribe to osdmap when cluster is full libceph: handle new osdmap down/state change encoding rbd: handle online resize of underlying rbd image ceph: avoid inode lookup on nfs fh reconnect ceph: use LOOKUPINO to make unconnected nfs fh more reliable rbd: use snprintf for disk->disk_name rbd: cleanup: make kfree match kmalloc rbd: warn on update_snaps failure on notify ceph: check return value for start_request in writepages ceph: remove useless check libceph: add missing breaks in addr_set_port libceph: fix TAG_WAIT case ceph: fix broken comparison in readdir loop libceph: fix osdmap timestamp assignment ceph: fix rare potential cap leak libceph: use snprintf for unknown addrs libceph: use snprintf for formatting object name ceph: use snprintf for dirstat content libceph: fix uninitialized value when no get_authorizer method is set ...
2011-05-25Merge branch 'for-davem' of ↵David S. Miller
ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
2011-05-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: 9p: update Documentation pointers net/9p: enable 9p to work in non-default network namespace net/9p: p9_idpool_get return -1 on error fs/9p: Don't clunk dentry fid when we fail to get a writeback inode 9p: Small cleanup in <net/9p/9p.h> 9p: remove experimental tag from tested configurations 9p: typo fixes and minor cleanups net/9p: Change linuxdoc names to match functions.
2011-05-25vmscan: change shrinker API by passing shrink_control structYing Han
Change each shrinker's API by consolidating the existing parameters into shrink_control struct. This will simplify any further features added w/o touching each file of shrinker. [akpm@linux-foundation.org: fix build] [akpm@linux-foundation.org: fix warning] [kosaki.motohiro@jp.fujitsu.com: fix up new shrinker API] [akpm@linux-foundation.org: fix xfs warning] [akpm@linux-foundation.org: update gfs2] Signed-off-by: Ying Han <yinghan@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Minchan Kim <minchan.kim@gmail.com> Acked-by: Pavel Emelyanov <xemul@openvz.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Acked-by: Rik van Riel <riel@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Hugh Dickins <hughd@google.com> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25net/9p: enable 9p to work in non-default network namespaceRob Landley
Teach 9p filesystem to work in container with non-default network namespace. (Note: I also patched the unix domain socket code but don't have a test case for that. It's the same fix, I just don't have a server for it...) To test, run diod server (http://code.google.com/p/diod): diod -n -f -L stderr -l 172.23.255.1:9999 -c /dev/null -e /root and then mount like so: mount -t 9p -o port=9999,aname=/root,version=9p2000.L 172.23.255.1 /mnt A container test environment is described at http://landley.net/lxc Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-05-25net/9p: p9_idpool_get return -1 on errorAneesh Kumar K.V
We need to return -1 on error. Also handle error properly Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-05-259p: remove experimental tag from tested configurationsEric Van Hensbergen
The 9p client is currently undergoing regular regresssion and stress testing as a by-product of the virtfs work. I think its finally time to take off the experimental tags from the well-tested code paths. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-05-259p: typo fixes and minor cleanupsRob Landley
Typo fixes and minor cleanups for v9fs Signed-off-by: Rob Landley <rob@landley.net> Reviewed-by: Venkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-05-25net/9p: Change linuxdoc names to match functions.Rob Landley
As on Jeopardy, my question is in the form of a patch: Does this have some special meaning, or is it an accident? (I looked at other filesystems but they didn't bother having doc entries for their init/exit function that I could find.) Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-05-24net: fix get_net_ns_by_fd for !CONFIG_NET_NSStephen Rothwell
After merging the final tree, today's linux-next build (powerpc ppc44x_defconfig) failed like this: net/built-in.o: In function `get_net_ns_by_fd': (.text+0x11976): undefined reference to `netns_operations' net/built-in.o: In function `get_net_ns_by_fd': (.text+0x1197a): undefined reference to `netns_operations' netns_operations is only available if CONFIG_NET_NS is set ... Caused by commit f063052947f7 ("net: Allow setting the network namespace by fd"). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2011-05-24Merge ↵John W. Linville
ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
2011-05-24libceph: subscribe to osdmap when cluster is fullSage Weil
When the cluster is marked full, subscribe to subsequent map updates to ensure we find out promptly when it is no longer full. This will prevent us from spewing ENOSPC for (much) longer than necessary. Signed-off-by: Sage Weil <sage@newdream.net>
2011-05-24libceph: handle new osdmap down/state change encodingSage Weil
Old incrementals encode a 0 value (nearly always) when an osd goes down. Change that to allow any state bit(s) to be flipped. Special case 0 to mean flip the CEPH_OSD_UP bit to mimic the old behavior. Signed-off-by: Sage Weil <sage@newdream.net>
2011-05-24bridge: initialize fake_rtable metricsEric Dumazet
bridge netfilter code uses a fake_rtable, and we must init its _metric field or risk NULL dereference later. Ref: https://bugzilla.kernel.org/show_bug.cgi?id=35672 Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-24net: fix __dst_destroy_metrics_generic()Eric Dumazet
dst_default_metrics is readonly, we dont want to kfree() it later. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-24igmp: call ip_mc_clear_src() only when we have no users of ip_mc_listVeaceslav Falico
In igmp_group_dropped() we call ip_mc_clear_src(), which resets the number of source filters per mulitcast. However, igmp_group_dropped() is also called on NETDEV_DOWN, NETDEV_PRE_TYPE_CHANGE and NETDEV_UNREGISTER, which means that the group might get added back on NETDEV_UP, NETDEV_REGISTER and NETDEV_POST_TYPE_CHANGE respectively, leaving us with broken source filters. To fix that, we must clear the source filters only when there are no users in the ip_mc_list, i.e. in ip_mc_dec_group() and on device destroy. Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-24net: use synchronize_rcu_expedited()Eric Dumazet
synchronize_rcu() is very slow in various situations (HZ=100, CONFIG_NO_HZ=y, CONFIG_PREEMPT=n) Extract from my (mostly idle) 8 core machine : synchronize_rcu() in 99985 us synchronize_rcu() in 79982 us synchronize_rcu() in 87612 us synchronize_rcu() in 79827 us synchronize_rcu() in 109860 us synchronize_rcu() in 98039 us synchronize_rcu() in 89841 us synchronize_rcu() in 79842 us synchronize_rcu() in 80151 us synchronize_rcu() in 119833 us synchronize_rcu() in 99858 us synchronize_rcu() in 73999 us synchronize_rcu() in 79855 us synchronize_rcu() in 79853 us When we hold RTNL mutex, we would like to spend some cpu cycles but not block too long other processes waiting for this mutex. We also want to setup/dismantle network features as fast as possible at boot/shutdown time. This patch makes synchronize_net() call the expedited version if RTNL is locked. synchronize_rcu_expedited() typical delay is about 20 us on my machine. synchronize_rcu_expedited() in 18 us synchronize_rcu_expedited() in 18 us synchronize_rcu_expedited() in 18 us synchronize_rcu_expedited() in 18 us synchronize_rcu_expedited() in 20 us synchronize_rcu_expedited() in 16 us synchronize_rcu_expedited() in 20 us synchronize_rcu_expedited() in 18 us synchronize_rcu_expedited() in 18 us Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com> CC: Ben Greear <greearb@candelatech.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-24seqlock: Get rid of SEQLOCK_UNLOCKEDEric Dumazet
All static seqlock should be initialized with the lockdep friendly __SEQLOCK_UNLOCKED() macro. Remove legacy SEQLOCK_UNLOCKED() macro. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: David Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/%3C1306238888.3026.31.camel%40edumazet-laptop%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-05-24Merge branch 'next' into for-linusJames Morris
2011-05-24net: convert %p usage to %pKDan Rosenberg
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>
2011-05-24ipv6: Fix return of xfrm6_tunnel_rcv()David S. Miller
Like ipv4, just return xfrm6_rcv_spi()'s return value directly. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23net: filter: Use WARN_RATELIMITJoe Perches
A mis-configured filter can spam the logs with lots of stack traces. Rate-limit the warnings and add printout of the bogus filter information. Original-patch-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23sch_sfq: avoid giving spurious NET_XMIT_CN signalsEric Dumazet
While chasing a possible net_sched bug, I found that IP fragments have litle chance to pass a congestioned SFQ qdisc : - Say SFQ qdisc is full because one flow is non responsive. - ip_fragment() wants to send two fragments belonging to an idle flow. - sfq_enqueue() queues first packet, but see queue limit reached : - sfq_enqueue() drops one packet from 'big consumer', and returns NET_XMIT_CN. - ip_fragment() cancel remaining fragments. This patch restores fairness, making sure we return NET_XMIT_CN only if we dropped a packet from the same flow. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Jarek Poplawski <jarkao2@gmail.com> CC: Jamal Hadi Salim <hadi@cyberus.ca> CC: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23snap: remove one synchronize_net()Eric Dumazet
No need to wait for a rcu grace period after list insertion. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>