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2012-01-17mac80211: Fix possible race between sta_unblock and network softirqHelmut Schaa1-2/+4
All other code paths in sta_unblock synchronize with the network softirq by using local_bh_disable/enable. Do the same around ieee80211_sta_ps_deliver_wakeup. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-16mac80211: fix tx->skb NULL pointer dereferenceYoni Divinsky3-9/+22
In function ieee80211_tx_h_encrypt the var info was initialized from tx->skb, since the fucntion is called after the function ieee80211_tx_h_fragment tx->skb is not valid anymore. Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-16Net, mac80211: Fix resource leak in ieee80211_rx_h_mesh_fwding()Jesper Juhl1-0/+1
We may leak the 'fwd_skb' we skb_copy() in ieee80211_rx_h_mesh_fwding() if we take the 'else' branch in the 'if' statement just below. If we take that branch we'll end up returning from the function and since we've not assigned 'fwd_skb' to anything at that point, we leak it when the variable goes out of scope. The simple fix seems to be to just kfree_skb(fwd_skb); just before we return. That is what this patch does. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-13mac80211: fix no-op authorized transitionsJohannes Berg1-1/+1
When userspace attempts to authorize a station that is already authorized, nothing happens as you'd expect. Similarly, when it unauthorizes a station that is associated, nothing happens. However, when it unauthorizes a station that isn't even associated yet, we erroneously try to move the station to associated. This seems to happen occasionally as a result of a race when wpa_supplicant attempts to unauthorize the port in managed mode. Particularly with my new patches to keep stations, it can then move a station into ASSOCIATED state before we have really associated, which is really confusing. I introduced this bug in "mac80211: refactor station state transitions" Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds50-182/+311
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (69 commits) pptp: Accept packet with seq zero RDS: Remove some unused iWARP code net: fsl: fec: handle 10Mbps speed in RMII mode drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c: add missing iounmap drivers/net/ethernet/tundra/tsi108_eth.c: add missing iounmap ksz884x: fix mtu for VLAN net_sched: sfq: add optional RED on top of SFQ dp83640: Fix NOHZ local_softirq_pending 08 warning gianfar: Fix invalid TX frames returned on error queue when time stamping gianfar: Fix missing sock reference when processing TX time stamps phylib: introduce mdiobus_alloc_size() net: decrement memcg jump label when limit, not usage, is changed net: reintroduce missing rcu_assign_pointer() calls inet_diag: Rename inet_diag_req_compat into inet_diag_req inet_diag: Rename inet_diag_req into inet_diag_req_v2 bond_alb: don't disable softirq under bond_alb_xmit mac80211: fix rx->key NULL pointer dereference in promiscuous mode nl80211: fix old station flags compatibility mdio-octeon: use an unique MDIO bus name. mdio-gpio: use an unique MDIO bus name. ...
2012-01-12RDS: Remove some unused iWARP codeRoland Dreier1-14/+1
rds_iw_flush_goal() just returns a count, but it is only called in one place and its return value is ignored there. So delete all the dead code. Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-12net_sched: sfq: add optional RED on top of SFQEric Dumazet1-16/+130
Adds an optional Random Early Detection on each SFQ flow queue. Traditional SFQ limits count of packets, while RED permits to also control number of bytes per flow, and adds ECN capability as well. 1) We dont handle the idle time management in this RED implementation, since each 'new flow' begins with a null qavg. We really want to address backlogged flows. 2) if headdrop is selected, we try to ecn mark first packet instead of currently enqueued packet. This gives faster feedback for tcp flows compared to traditional RED [ marking the last packet in queue ] Example of use : tc qdisc add dev $DEV parent 1:1 handle 10: est 1sec 4sec sfq \ limit 3000 headdrop flows 512 divisor 16384 \ redflowlimit 100000 min 8000 max 60000 probability 0.20 ecn qdisc sfq 10: parent 1:1 limit 3000p quantum 1514b depth 127 headdrop flows 512/16384 divisor 16384 ewma 6 min 8000b max 60000b probability 0.2 ecn prob_mark 0 prob_mark_head 4876 prob_drop 6131 forced_mark 0 forced_mark_head 0 forced_drop 0 Sent 1175211782 bytes 777537 pkt (dropped 6131, overlimits 11007 requeues 0) rate 99483Kbit 8219pps backlog 689392b 456p requeues 0 In this test, with 64 netperf TCP_STREAM sessions, 50% using ECN enabled flows, we can see number of packets CE marked is smaller than number of drops (for non ECN flows) If same test is run, without RED, we can check backlog is much bigger. qdisc sfq 10: parent 1:1 limit 3000p quantum 1514b depth 127 headdrop flows 512/16384 divisor 16384 Sent 1148683617 bytes 795006 pkt (dropped 0, overlimits 0 requeues 0) rate 98429Kbit 8521pps backlog 1221290b 841p requeues 0 Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Stephen Hemminger <shemminger@vyatta.com> CC: Dave Taht <dave.taht@gmail.com> Tested-by: Dave Taht <dave.taht@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-12net: decrement memcg jump label when limit, not usage, is changedGlauber Costa1-1/+1
The logic of the current code is that whenever we destroy a cgroup that had its limit set (set meaning different than maximum), we should decrement the jump_label counter. Otherwise we assume it was never incremented. But what the code actually does is test for RES_USAGE instead of RES_LIMIT. Usage being different than maximum is likely to be true most of the time. The effect of this is that the key must become negative, and since the jump_label test says: !!atomic_read(&key->enabled); we'll have jump_labels still on when no one else is using this functionality. Signed-off-by: Glauber Costa <glommer@parallels.com> CC: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-12net: reintroduce missing rcu_assign_pointer() callsEric Dumazet32-63/+61
commit a9b3cd7f32 (rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER) did a lot of incorrect changes, since it did a complete conversion of rcu_assign_pointer(x, y) to RCU_INIT_POINTER(x, y). We miss needed barriers, even on x86, when y is not NULL. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Stephen Hemminger <shemminger@vyatta.com> CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-12Merge branch 'master' of ↵David S. Miller11-56/+86
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2012-01-12virtio: rename virtqueue_add_buf_gfp to virtqueue_add_bufRusty Russell1-2/+4
Remove wrapper functions. This makes the allocation type explicit in all callers; I used GPF_KERNEL where it seemed obvious, left it at GFP_ATOMIC otherwise. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: Christoph Hellwig <hch@lst.de>
2012-01-11inet_diag: Rename inet_diag_req_compat into inet_diag_reqPavel Emelyanov1-4/+4
Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-11inet_diag: Rename inet_diag_req into inet_diag_req_v2Pavel Emelyanov4-28/+28
Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-11mac80211: fix rx->key NULL pointer dereference in promiscuous modeStanislaw Gruszka1-1/+1
Since: commit 816c04fe7ef01dd9649f5ccfe796474db8708be5 Author: Christian Lamparter <chunkeey@googlemail.com> Date: Sat Apr 30 15:24:30 2011 +0200 mac80211: consolidate MIC failure report handling is possible to that we dereference rx->key == NULL when driver set RX_FLAG_MMIC_STRIPPED and not RX_FLAG_IV_STRIPPED and we are in promiscuous mode. This happen with rt73usb and rt61pci at least. Before the commit we always check rx->key against NULL, so I assume fix should be done in mac80211 (also mic_fail path has similar check). References: https://bugzilla.redhat.com/show_bug.cgi?id=769766 http://rt2x00.serialmonkey.com/pipermail/users_rt2x00.serialmonkey.com/2012-January/004395.html Cc: stable@vger.kernel.org # 3.0+ Reported-by: Stuart D Gathman <stuart@gathman.org> Reported-by: Kai Wohlfahrt <kai.scorpio@gmail.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-11nl80211: fix old station flags compatibilityJohannes Berg1-4/+30
My patch to validate station flags broke compatibility with the old station flags setting where all flags are always set at once since it always set the mask as all possible flags which ended up being rejected later in the station add/modify code. Fix by parsing only the current flags in the old flags attribute -- new applications and new flags should use (and will now require) the new flags attribute where the mask is given by the application. Reported-and-tested-by: Thomas Hilber <ath9k-dev@toh.cx> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-10Merge branch 'for-linus' of ↵Linus Torvalds8-216/+248
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: fs/9p: iattr_valid flags are kernel internal flags map them to 9p values. fs/9p: We should not allocate a new inode when creating hardlines. fs/9p: v9fs_stat2inode should update suid/sgid bits. 9p: Reduce object size with CONFIG_NET_9P_DEBUG fs/9p: check schedule_timeout_interruptible return value Fix up trivial conflicts in fs/9p/{vfs_inode.c,vfs_inode_dotl.c} due to debug messages having changed to use p9_debug() on one hand, and the changes for umode_t on the other.
2012-01-10Merge branch 'nfs-for-3.3' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds3-20/+29
* 'nfs-for-3.3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4: Change the default setting of the nfs4_disable_idmapping parameter NFSv4: Save the owner/group name string when doing open NFS: Remove pNFS bloat from the generic write path pnfs-obj: Must return layout on IO error pnfs-obj: pNFS errors are communicated on iodata->pnfs_error NFS: Cache state owners after files are closed NFS: Clean up nfs4_find_state_owners_locked() NFSv4: include bitmap in nfsv4 get acl data nfs: fix a minor do_div portability issue NFSv4.1: cleanup comment and debug printk NFSv4.1: change nfs4_free_slot parameters for dynamic slots NFSv4.1: cleanup init and reset of session slot tables NFSv4.1: fix backchannel slotid off-by-one bug nfs: fix regression in handling of context= option in NFSv4 NFS - fix recent breakage to NFS error handling. NFS: Retry mounting NFSROOT SUNRPC: Clean up the RPCSEC_GSS service ticket requests
2012-01-10Merge branch 'master' of ↵John W. Linville9-51/+55
git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-next
2012-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds6-12/+27
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: igmp: Avoid zero delay when receiving odd mixture of IGMP queries netdev: make net_device_ops const bcm63xx: make ethtool_ops const usbnet: make ethtool_ops const net: Fix build with INET disabled. net: introduce netif_addr_lock_nested() and call if when appropriate net: correct lock name in dev_[uc/mc]_sync documentations. net: sk_update_clone is only used in net/core/sock.c 8139cp: fix missing napi_gro_flush. pktgen: set correct max and min in pktgen_setup_inject() smsc911x: Unconditionally include linux/smscphy.h in smsc911x.h asix: fix infinite loop in rx_fixup() net: Default UDP and UNIX diag to 'n'. r6040: fix typo in use of MCR0 register bits net: fix sock_clone reference mismatch with tcp memcontrol
2012-01-09igmp: Avoid zero delay when receiving odd mixture of IGMP queriesBen Hutchings1-0/+2
Commit 5b7c84066733c5dfb0e4016d939757b38de189e4 ('ipv4: correct IGMP behavior on v3 query during v2-compatibility mode') added yet another case for query parsing, which can result in max_delay = 0. Substitute a value of 1, as in the usual v3 case. Reported-by: Simon McVittie <smcv@debian.org> References: http://bugs.debian.org/654876 Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-09net: Fix build with INET disabled.David S. Miller1-0/+1
> net/core/sock.c: In function 'sk_update_clone': > net/core/sock.c:1278:3: error: implicit declaration of function 'sock_update_memcg' Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-09Merge branch 'for-3.3' of ↵Linus Torvalds2-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: Remove irqsafe_cpu_xxx variants Fix up conflict in arch/x86/include/asm/percpu.h due to clash with cebef5beed3d ("x86: Fix and improve percpu_cmpxchg{8,16}b_double()") which edited the (now removed) irqsafe_cpu_cmpxchg*_double code.
2012-01-09net: introduce netif_addr_lock_nested() and call if when appropriateJiri Pirko1-6/+6
dev_uc_sync() and dev_mc_sync() are acquiring netif_addr_lock for destination device of synchronization. Since netif_addr_lock is already held at the time for source device, this triggers lockdep deadlock warning. There's no way this deadlock can happen so use spin_lock_nested() to silence the warning. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-09net: correct lock name in dev_[uc/mc]_sync documentations.Jiri Pirko1-2/+2
Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-08net: sk_update_clone is only used in net/core/sock.cStephen Rothwell1-0/+6
so move it there. Fixes build errors when CONFIG_INET is not defined: In file included from include/linux/tcp.h:211:0, from include/linux/ipv6.h:221, from include/net/ipv6.h:16, from include/linux/sunrpc/clnt.h:26, from include/linux/nfs_fs.h:50, from init/do_mounts.c:20: include/net/sock.h: In function 'sk_update_clone': include/net/sock.h:1109:3: error: implicit declaration of function 'sock_update_memcg' [-Werror=implicit-function-declaration] Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-08Merge branch 'for-linus' of ↵Linus Torvalds5-6/+3
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits) Kconfig: acpi: Fix typo in comment. misc latin1 to utf8 conversions devres: Fix a typo in devm_kfree comment btrfs: free-space-cache.c: remove extra semicolon. fat: Spelling s/obsolate/obsolete/g SCSI, pmcraid: Fix spelling error in a pmcraid_err() call tools/power turbostat: update fields in manpage mac80211: drop spelling fix types.h: fix comment spelling for 'architectures' typo fixes: aera -> area, exntension -> extension devices.txt: Fix typo of 'VMware'. sis900: Fix enum typo 'sis900_rx_bufer_status' decompress_bunzip2: remove invalid vi modeline treewide: Fix comment and string typo 'bufer' hyper-v: Update MAINTAINERS treewide: Fix typos in various parts of the kernel, and fix some comments. clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR gpio: Kconfig: drop unknown symbol 'CS5535_GPIO' leds: Kconfig: Fix typo 'D2NET_V2' sound: Kconfig: drop unknown symbol ARCH_CLPS7500 ... Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new kconfig additions, close to removed commented-out old ones)
2012-01-08Merge branch 'pm-for-linus' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm * 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits) PM / Hibernate: Implement compat_ioctl for /dev/snapshot PM / Freezer: fix return value of freezable_schedule_timeout_killable() PM / shmobile: Allow the A4R domain to be turned off at run time PM / input / touchscreen: Make st1232 use device PM QoS constraints PM / QoS: Introduce dev_pm_qos_add_ancestor_request() PM / shmobile: Remove the stay_on flag from SH7372's PM domains PM / shmobile: Don't include SH7372's INTCS in syscore suspend/resume PM / shmobile: Add support for the sh7372 A4S power domain / sleep mode PM: Drop generic_subsys_pm_ops PM / Sleep: Remove forward-only callbacks from AMBA bus type PM / Sleep: Remove forward-only callbacks from platform bus type PM: Run the driver callback directly if the subsystem one is not there PM / Sleep: Make pm_op() and pm_noirq_op() return callback pointers PM/Devfreq: Add Exynos4-bus device DVFS driver for Exynos4210/4212/4412. PM / Sleep: Merge internal functions in generic_ops.c PM / Sleep: Simplify generic system suspend callbacks PM / Hibernate: Remove deprecated hibernation snapshot ioctls PM / Sleep: Fix freezer failures due to racy usermodehelper_is_disabled() ARM: S3C64XX: Implement basic power domain support PM / shmobile: Use common always on power domain governor ... Fix up trivial conflict in fs/xfs/xfs_buf.c due to removal of unused XBT_FORCE_SLEEP bit
2012-01-08Merge branch 'for-linus2' of ↵Linus Torvalds3-4/+3
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs * 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (165 commits) reiserfs: Properly display mount options in /proc/mounts vfs: prevent remount read-only if pending removes vfs: count unlinked inodes vfs: protect remounting superblock read-only vfs: keep list of mounts for each superblock vfs: switch ->show_options() to struct dentry * vfs: switch ->show_path() to struct dentry * vfs: switch ->show_devname() to struct dentry * vfs: switch ->show_stats to struct dentry * switch security_path_chmod() to struct path * vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb vfs: trim includes a bit switch mnt_namespace ->root to struct mount vfs: take /proc/*/mounts and friends to fs/proc_namespace.c vfs: opencode mntget() mnt_set_mountpoint() vfs: spread struct mount - remaining argument of next_mnt() vfs: move fsnotify junk to struct mount vfs: move mnt_devname vfs: move mnt_list to struct mount vfs: switch pnode.h macros to struct mount * ...
2012-01-07pktgen: set correct max and min in pktgen_setup_inject()Dan Carpenter1-2/+2
In 882716604ec "pktgen: fix multiple queue warning" we added special logic to handle the case where ntxq is zero. It's not clear to me that ntxq can actually be zero. But if it were then we would set ->queue_map_min and ->queue_map_max to USHRT_MAX when probably we want to set them to zero? Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-07net: Default UDP and UNIX diag to 'n'.David S. Miller2-2/+6
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-07net: fix sock_clone reference mismatch with tcp memcontrolGlauber Costa1-0/+2
Sockets can also be created through sock_clone. Because it copies all data in the sock structure, it also copies the memcg-related pointer, and all should be fine. However, since we now use reference counts in socket creation, we are left with some sockets that have no reference counts. It matters when we destroy them, since it leads to a mismatch. Signed-off-by: Glauber Costa <glommer@parallels.com> CC: David S. Miller <davem@davemloft.net> CC: Greg Thelen <gthelen@google.com> CC: Hiroyouki Kamezawa <kamezawa.hiroyu@jp.fujitsu.com> CC: Laurent Chavey <chavey@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds432-11004/+24072
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1958 commits) net: pack skb_shared_info more efficiently net_sched: red: split red_parms into parms and vars net_sched: sfq: extend limits cnic: Improve error recovery on bnx2x devices cnic: Re-init dev->stats_addr after chip reset net_sched: Bug in netem reordering bna: fix sparse warnings/errors bna: make ethtool_ops and strings const xgmac: cleanups net: make ethtool_ops const vmxnet3" make ethtool ops const xen-netback: make ops structs const virtio_net: Pass gfp flags when allocating rx buffers. ixgbe: FCoE: Add support for ndo_get_fcoe_hbainfo() call netdev: FCoE: Add new ndo_get_fcoe_hbainfo() call igb: reset PHY after recovering from PHY power down igb: add basic runtime PM support igb: Add support for byte queue limits. e1000: cleanup CE4100 MDIO registers access e1000: unmap ce4100_gbe_mdio_base_virt in e1000_remove ...
2012-01-05vfs: fix up ENOIOCTLCMD error handlingLinus Torvalds1-15/+1
We're doing some odd things there, which already messes up various users (see the net/socket.c code that this removes), and it was going to add yet more crud to the block layer because of the incorrect error code translation. ENOIOCTLCMD is not an error return that should be returned to user mode from the "ioctl()" system call, but it should *not* be translated as EINVAL ("Invalid argument"). It should be translated as ENOTTY ("Inappropriate ioctl for device"). That EINVAL confusion has apparently so permeated some code that the block layer actually checks for it, which is sad. We continue to do so for now, but add a big comment about how wrong that is, and we should remove it entirely eventually. In the meantime, this tries to keep the changes localized to just the EINVAL -> ENOTTY fix, and removing code that makes it harder to do the right thing. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-05net_sched: red: split red_parms into parms and varsEric Dumazet3-52/+62
This patch splits the red_parms structure into two components. One holding the RED 'constant' parameters, and one containing the variables. This permits a size reduction of GRED qdisc, and is a preliminary step to add an optional RED unit to SFQ. SFQRED will have a single red_parms structure shared by all flows, and a private red_vars per flow. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Dave Taht <dave.taht@gmail.com> CC: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-05net_sched: sfq: extend limitsEric Dumazet1-58/+117
SFQ as implemented in Linux is very limited, with at most 127 flows and limit of 127 packets. [ So if 127 flows are active, we have one packet per flow ] This patch brings to SFQ following features to cope with modern needs. - Ability to specify a smaller per flow limit of inflight packets. (default value being at 127 packets) - Ability to have up to 65408 active flows (instead of 127) - Ability to have head drops instead of tail drops (to drop old packets from a flow) Example of use : No more than 20 packets per flow, max 8000 flows, max 20000 packets in SFQ qdisc, hash table of 65536 slots. tc qdisc add ... sfq \ flows 8000 \ depth 20 \ headdrop \ limit 20000 \ divisor 65536 Ram usage : 2 bytes per hash table entry (instead of previous 1 byte/entry) 32 bytes per flow on 64bit arches, instead of 384 for QFQ, so much better cache hit ratio. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Dave Taht <dave.taht@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-05net_sched: Bug in netem reorderingHagen Paul Pfeifer1-2/+2
Not now, but it looks you are correct. q->qdisc is NULL until another additional qdisc is attached (beside tfifo). See 50612537e9ab2969312. The following patch should work. From: Hagen Paul Pfeifer <hagen@jauu.net> netem: catch NULL pointer by updating the real qdisc statistic Reported-by: Vijay Subramanian <subramanian.vijay@gmail.com> Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-059p: Reduce object size with CONFIG_NET_9P_DEBUGJoe Perches8-216/+248
Reduce object size by deduplicating formats. Use vsprintf extension %pV. Rename P9_DPRINTK uses to p9_debug, align arguments. Add function for _p9_debug and macro to add __func__. Add missing "\n"s to p9_debug uses. Remove embedded function names as p9_debug adds it. Remove P9_EPRINTK macro and convert use to pr_<level>. Add and use pr_fmt and pr_<level>. $ size fs/9p/built-in.o* text data bss dec hex filename 62133 984 16000 79117 1350d fs/9p/built-in.o.new 67342 984 16928 85254 14d06 fs/9p/built-in.o.old $ size net/9p/built-in.o* text data bss dec hex filename 88792 4148 22024 114964 1c114 net/9p/built-in.o.new 94072 4148 23232 121452 1da6c net/9p/built-in.o.old Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2012-01-05NFSv4: include bitmap in nfsv4 get acl dataAndy Adamson1-1/+2
The NFSv4 bitmap size is unbounded: a server can return an arbitrary sized bitmap in an FATTR4_WORD0_ACL request. Replace using the nfs4_fattr_bitmap_maxsz as a guess to the maximum bitmask returned by a server with the inclusion of the bitmap (xdr length plus bitmasks) and the acl data xdr length to the (cached) acl page data. This is a general solution to commit e5012d1f "NFSv4.1: update nfs4_fattr_bitmap_maxsz" and fixes hitting a BUG_ON in xdr_shrink_bufhead when getting ACLs. Fix a bug in decode_getacl that returned -EINVAL on ACLs > page when getxattr was called with a NULL buffer, preventing ACL > PAGE_SIZE from being retrieved. Cc: stable@kernel.org Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-01-05SUNRPC: Clean up the RPCSEC_GSS service ticket requestsTrond Myklebust2-19/+27
Instead of hacking specific service names into gss_encode_v1_msg, we should just allow the caller to specify the service name explicitly. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: J. Bruce Fields <bfields@redhat.com>
2012-01-05Merge branch 'master' of ↵John W. Linville18-102/+149
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/b43legacy/dma.c
2012-01-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2-3/+3
2012-01-04ipv6/addrconf: speedup /proc/net/if_inet6 fillingMihai Maruseac1-15/+28
This ensures a linear behaviour when filling /proc/net/if_inet6 thus making ifconfig run really fast on IPv6 only addresses. In fact, with this patch and the IPv4 one sent a while ago, ifconfig will run in linear time regardless of address type. IPv4 related patch: f04565ddf52e401880f8ba51de0dff8ba51c99fd dev: use name hash for dev_seq_ops ... Some statistics (running ifconfig > /dev/null on a different setup): iface count / IPv6 no-patch time / IPv6 patched time / IPv4 time ---------------------------------------------------------------- 6250 | 0.23 s | 0.13 s | 0.11 s 12500 | 0.62 s | 0.28 s | 0.22 s 25000 | 2.91 s | 0.57 s | 0.46 s 50000 | 11.37 s | 1.21 s | 0.94 s 128000 | 86.78 s | 3.05 s | 2.54 s Signed-off-by: Mihai Maruseac <mmaruseac@ixiacom.com> Cc: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-04ipv6: Check RA for sllao when configuring optimistic ipv6 address (v2)Neil Horman2-3/+5
Recently Dave noticed that a test we did in ipv6_add_addr to see if we next hop route for the interface we're adding an addres to was wrong (see commit 7ffbcecbeed91e5874e9a1cfc4c0cbb07dac3069). for one, it never triggers, and two, it was completely wrong to begin with. This test was meant to cover this section of RFC 4429: 3.3 Modifications to RFC 2462 Stateless Address Autoconfiguration * (modifies section 5.5) A host MAY choose to configure a new address as an Optimistic Address. A host that does not know the SLLAO of its router SHOULD NOT configure a new address as Optimistic. A router SHOULD NOT configure an Optimistic Address. This patch should bring us into proper compliance with the above clause. Since we only add a SLAAC address after we've received a RA which may or may not contain a source link layer address option, we can pass a pointer to that option to addrconf_prefix_rcv (which may be null if the option is not present), and only set the optimistic flag if the option was found in the RA. Change notes: (v2) modified the new parameter to addrconf_prefix_rcv to be a bool rather than a pointer to make its use more clear as per request from davem. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-04mac80211: remove dead codeMohammed Shafi Shajakhan2-19/+0
ieee80211_offchannel_enable_all_ps function is no longer used and looks like its logic is extensively handled in ieee80211_offchannel_stop_vifs Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-04mac80211: Call driver commands after drv_start in mac80211 restart codeYogesh Ashok Powar1-10/+9
Ideally, hardware/firmware initialization is complete after the drv_start routine. In mac80211 restart code (ieee80211_reconfig), defer calling the driver commands i.e. setup fragmentation threshold, rts threshold and coverage class till drv_start routine is called. Signed-off-by: Nishant Sarmukadam <nishants@marvell.com> Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> v2: Removed extra blank line added. Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-04mac80211: use RCU read locks for sta_info_getMohammed Shafi Shajakhan1-0/+2
this is being recently introduced by the commit a85e1d55974646a442d95911e3f7d7a891ea9ac5 Cc: Paul Stewart <pstew@google.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-04mac80211: fix kernel panic in IBSS due to a regressionMohammed Shafi Shajakhan1-1/+4
kernel panic occurs when we create an IBSS mode and leave it for sometime without any joiner and this is introduced by the commit ec2b774e7c91094d8c00de579646f1162b87b01e where we don't put proper braces for 'list_for_each_entry_safe' and we pass an invalid 'sta' pointer to __sta_info_destroy EIP is at __list_add+0xe/0xa0 EAX: f3b63db4 EBX: 00000000 ECX: eab88c1c EDX: 00000000 ESI: 00000000 EDI: 00000246 EBP: f3b63d80 ESP: f3b63d58 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process kworker/u:2 (pid: 198, ti=f3b62000 task=f3afbea0 task.ti=f3b62000) Stack: 00000000 00000000 f9ef9821 00000000 00000000 eab88c30 f3b63d80 c017f623 eab88bf0 eab88bf0 f3b63dd0 c066f925 00000000 00000002 00000000 f9ef9821 f3b63da0 c0180a2b eab88c1c eab88c30 00000002 f3afbea0 eab88bf4 f3b63db4 Call Trace: [<f9ef9821>] ? __ieee80211_stop_tx_ba_session+0x31/0x60 [mac80211] [<c017f623>] ? debug_mutex_add_waiter+0x23/0x60 [<c066f925>] __mutex_lock_common+0xd5/0x390 [<f9ef9821>] ? __ieee80211_stop_tx_ba_session+0x31/0x60 [mac80211] [<c0180a2b>] ? trace_hardirqs_off+0xb/0x10 [<c066fd37>] mutex_lock_nested+0x47/0x60 [<f9ef9821>] ? __ieee80211_stop_tx_ba_session+0x31/0x60 [mac80211] [<f9ef9821>] __ieee80211_stop_tx_ba_session+0x31/0x60 [mac80211] [<f9ef8989>] ieee80211_sta_tear_down_BA_sessions+0x39/0x60 [mac80211] [<f9ef1a67>] __sta_info_destroy+0x57/0x780 [mac80211] [<f9ef2223>] ieee80211_sta_expire+0x93/0xb0 [mac80211] [<f9efc8f6>] ieee80211_ibss_work+0x2d6/0x530 [mac80211] Cc: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-04mac80211: fix scan state machineMohammed Shafi Shajakhan1-1/+1
when we run high bandwidth UDP traffic and we trigger a scan, the scan state machine seems to be looping in SUSPEND->RESUME->DECISION->SUSPEND and SET_CHANNEL seems to be never called as 'tx_empty' is never true while running UDP traffic. fix this by settting SET_CHANNEL state when we get into RESUME state. Cc: Leela Kella <leela@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-04net/rfkill/rfkill-gpio.c: introduce missing kfreeJulia Lawall1-1/+1
Error handling code following a kmalloc should free the allocated data. The label fail_alloc already does this for rfkill. A simplified version of the semantic match that finds the problem is as follows: (http://coccinelle.lip6.fr) // <smpl> @r exists@ local idexpression x; statement S; identifier f1; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } x->f1 ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-04mac80211: always clear SDATA_STATE_OFFCHANNEL flagEliad Peller1-1/+3
If the vif is stopped while it is offchannel (e.g. right after p2p negotiation) the SDATA_STATE_OFFCHANNEL flag is never get cleared, resulting in various bad effects (e.g. GO can't start beaconing). Fix it by clearing the SDATA_STATE_OFFCHANNEL flag even if the vif is stopped. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 01:07:24 +0000