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2011-07-24[S390] iucv cr0 enablement bitMartin Schwidefsky
Do not set the cr0 enablement bit for iucv by default in head[31|64].S, move the enablement to iucv_init in the iucv base layer. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-23net/9p: Fix the msize calculation.Venkateswararao Jujjuri (JV)
msize represents the maximum PDU size that includes P9_IOHDRSZ. Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-23fs/9p: add 9P2000.L unlinkat operationAneesh Kumar K.V
unlinkat - Remove a directory entry size[4] Tunlinkat tag[2] dirfid[4] name[s] flag[4] size[4] Runlinkat tag[2] older Tremove have the below request format size[4] Tremove tag[2] fid[4] The remove message is used to remove a directory entry either file or directory The remove opreation is actually a directory opertation and should ideally have dirfid, if not we cannot represent the fid on server with anything other than name. We will have to derive the directory name from fid in the Tremove request. NOTE: The operation doesn't clunk the unlink fid. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-23fs/9p: add 9P2000.L renameat operationAneesh Kumar K.V
renameat - change name of file or directory size[4] Trenameat tag[2] olddirfid[4] oldname[s] newdirfid[4] newname[s] size[4] Rrenameat tag[2] older Trename have the below request format size[4] Trename tag[2] fid[4] newdirfid[4] name[s] The rename message is used to change the name of a file, possibly moving it to a new directory. The rename opreation is actually a directory opertation and should ideally have olddirfid, if not we cannot represent the fid on server with anything other than name. We will have to derive the old directory name from fid in the Trename request. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-23fs/9p: Clean-up get_protocol_version() to use strcmpPrem Karat
Signed-off-by: Prem Karat <prem.karat@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-23fs/9p: Fid is not valid after a failed clunk.Aneesh Kumar K.V
free the fid even in case of failed clunk. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-23VirtIO can transfer VIRTQUEUE_NUM of pages.jvrao
Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-23Fix the size of receive buffer packing onto VirtIO ring.jvrao
Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-239p: clean up packet dump codeEric Van Hensbergen
Switch to generic kernel hexdump library and cleanup macros to be more consistent with the way we do normal debug prints. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-23net/9p: fix client code to fail more gracefully on protocol errorEric Van Hensbergen
There was a BUG_ON to protect against a bad id which could be dealt with more gracefully. Reported-by: Natalie Orlin <norlin@us.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-07-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (107 commits) vfs: use ERR_CAST for err-ptr tossing in lookup_instantiate_filp isofs: Remove global fs lock jffs2: fix IN_DELETE_SELF on overwriting rename() killing a directory fix IN_DELETE_SELF on overwriting rename() on ramfs et.al. mm/truncate.c: fix build for CONFIG_BLOCK not enabled fs:update the NOTE of the file_operations structure Remove dead code in dget_parent() AFS: Fix silly characters in a comment switch d_add_ci() to d_splice_alias() in "found negative" case as well simplify gfs2_lookup() jfs_lookup(): don't bother with . or .. get rid of useless dget_parent() in btrfs rename() and link() get rid of useless dget_parent() in fs/btrfs/ioctl.c fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers drivers: fix up various ->llseek() implementations fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek Ext4: handle SEEK_HOLE/SEEK_DATA generically Btrfs: implement our own ->llseek fs: add SEEK_HOLE and SEEK_DATA flags reiserfs: make reiserfs default to barrier=flush ... Fix up trivial conflicts in fs/xfs/linux-2.6/xfs_super.c due to the new shrinker callout for the inode cache, that clashed with the xfs code to start the periodic workers later.
2011-07-22Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: Fix wrong check in list_splice_init_rcu() net,rcu: Convert call_rcu(xt_rateest_free_rcu) to kfree_rcu() sysctl,rcu: Convert call_rcu(free_head) to kfree vmalloc,rcu: Convert call_rcu(rcu_free_vb) to kfree_rcu() vmalloc,rcu: Convert call_rcu(rcu_free_va) to kfree_rcu() ipc,rcu: Convert call_rcu(ipc_immediate_free) to kfree_rcu() ipc,rcu: Convert call_rcu(free_un) to kfree_rcu() security,rcu: Convert call_rcu(sel_netport_free) to kfree_rcu() security,rcu: Convert call_rcu(sel_netnode_free) to kfree_rcu() ia64,rcu: Convert call_rcu(sn_irq_info_free) to kfree_rcu() block,rcu: Convert call_rcu(disk_free_ptbl_rcu_cb) to kfree_rcu() scsi,rcu: Convert call_rcu(fc_rport_free_rcu) to kfree_rcu() audit_tree,rcu: Convert call_rcu(__put_tree) to kfree_rcu() security,rcu: Convert call_rcu(whitelist_item_free) to kfree_rcu() md,rcu: Convert call_rcu(free_conf) to kfree_rcu()
2011-07-22icmp: Fix regression in nexthop resolution during replies.David S. Miller
icmp_route_lookup() uses the wrong flow parameters if the reverse session route lookup isn't used. So do not commit to the re-decoded flow until we actually make a final decision to use a real route saved in 'rt2'. Reported-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21ipv4: Constrain UFO fragment sizes to multiples of 8 bytesBill Sommerfeld
Because the ip fragment offset field counts 8-byte chunks, ip fragments other than the last must contain a multiple of 8 bytes of payload. ip_ufo_append_data wasn't respecting this constraint and, depending on the MTU and ip option sizes, could create malformed non-final fragments. Google-Bug-Id: 5009328 Signed-off-by: Bill Sommerfeld <wsommerfeld@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21ipv6: make fragment identifications less predictableEric Dumazet
IPv6 fragment identification generation is way beyond what we use for IPv4 : It uses a single generator. Its not scalable and allows DOS attacks. Now inetpeer is IPv6 aware, we can use it to provide a more secure and scalable frag ident generator (per destination, instead of system wide) This patch : 1) defines a new secure_ipv6_id() helper 2) extends inet_getid() to provide 32bit results 3) extends ipv6_select_ident() with a new dest parameter Reported-by: Fernando Gont <fernando@gont.com.ar> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21ipv6: unshare inetpeersEric Dumazet
We currently cow metrics a bit too soon in IPv6 case : All routes are tied to a single inetpeer entry. Change ip6_rt_copy() to get destination address as second argument, so that we fill rt6i_dst before the dst_copy_metrics() call. icmp6_dst_alloc() must set rt6i_dst before calling dst_metric_set(), or else the cow is done while rt6i_dst is still NULL. If orig route points to readonly metrics, we can share the pointer instead of performing the memory allocation and copy. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21ethtool: Allow zero-length register dumps againBen Hutchings
Some drivers (ab)use the ethtool_ops::get_regs operation to expose only a hardware revision ID. Commit a77f5db361ed9953b5b749353ea2c7fed2bf8d93 ('ethtool: Allocate register dump buffer with vmalloc()') had the side-effect of breaking these, as vmalloc() returns a null pointer for size=0 whereas kmalloc() did not. For backward-compatibility, allow zero-length dumps again. Reported-by: Kalle Valo <kvalo@qca.qualcomm.com> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Cc: stable@kernel.org [2.6.37+] Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21skbuff: fix error handling in pskb_copy()Dan Carpenter
There are two problems: 1) "n" was allocated with alloc_skb() so we should free it with kfree_skb() instead of regular kfree(). 2) We return the freed pointer instead of NULL. Signed-off-by: Dan Carpenter <error27@gmail.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21vlan: move vlan_group_[gs]et_device to public headerJiri Pirko
there are no users outside vlan code Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21vlan: kill ndo_vlan_rx_registerJiri Pirko
has no users so remove it Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21vlan: kill vlan_gro_frags and vlan_gro_receiveJiri Pirko
Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21vlan: kill __vlan_hwaccel_rx and vlan_hwaccel_rxJiri Pirko
Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21lro: do vlan cleanupJiri Pirko
- remove useless vlan parameters and pointers Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21lro: kill lro_vlan_hwaccel_receive_fragsJiri Pirko
Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21lro: kill lro_vlan_hwaccel_receive_skbJiri Pirko
no longer used Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21vlan: introduce __vlan_find_dev_deep()Jiri Pirko
Since vlan_group_get_device and vlan_group is not going to be accessible from device drivers, introduce function which substitutes it. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/bluetooth/l2cap_core.c
2011-07-21Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2011-07-21netfilter: ipset: hash:net,iface fixed to handle overlapping nets behind ↵Jozsef Kadlecsik
different interfaces If overlapping networks with different interfaces was added to the set, the type did not handle it properly. Example ipset create test hash:net,iface ipset add test 192.168.0.0/16,eth0 ipset add test 192.168.0.0/24,eth1 Now, if a packet was sent from 192.168.0.0/24,eth0, the type returned a match. In the patch the algorithm is fixed in order to correctly handle overlapping networks. Limitation: the same network cannot be stored with more than 64 different interfaces in a single set. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-07-20net,rcu: Convert call_rcu(xt_rateest_free_rcu) to kfree_rcu()Paul E. McKenney
The RCU callback xt_rateest_free_rcu() just calls kfree(), so we can use kfree_rcu() instead of call_rcu(). This also allows us to dispense with an rcu_barrier() call, speeding up unloading of this module. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Patrick McHardy <kaber@trash.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2011-07-20switch vfs_path_lookup() to struct pathAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20new helpers: kern_path_create/user_path_createAl Viro
combination of kern_path_parent() and lookup_create(). Does *not* expose struct nameidata to caller. Syscalls converted to that... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-19Merge 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: ceph: fix file mode calculation
2011-07-19ceph: fix file mode calculationSage Weil
open(2) must always include one of O_RDONLY, O_WRONLY, or O_RDWR. No need for any O_APPEND special case. Passing O_WRONLY|O_RDWR is undefined according to the man page, but the Linux VFS interprets this as O_RDWR, so we'll do the same. This fixes open(2) with flags O_RDWR|O_APPEND, which was incorrectly being translated to readonly. Reported-by: Fyodor Ustinov <ufm@ufm.su> Signed-off-by: Sage Weil <sage@newdream.net>
2011-07-19netfilter: nfnetlink_queue: batch verdict supportFlorian Westphal
Introduces a new nfnetlink type that applies a given verdict to all queued packets with an id <= the id in the verdict message. If a mark is provided it is applied to all matched packets. This reduces the number of verdicts that have to be sent. Applications that make use of this feature need to maintain a timeout to send a batchverdict periodically to avoid starvation. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-07-19netfilter: nfnetlink_queue: assert monotonic packet idsEric Dumazet
Packet identifier is currently setup in nfqnl_build_packet_message(), using one atomic_inc_return(). Problem is that since several cpus might concurrently call nfqnl_enqueue_packet() for the same queue, we can deliver packets to consumer in non monotonic way (packet N+1 being delivered after packet N) This patch moves the packet id setup from nfqnl_build_packet_message() to nfqnl_enqueue_packet() to guarantee correct delivery order. This also removes one atomic operation. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Florian Westphal <fw@strlen.de> CC: Pablo Neira Ayuso <pablo@netfilter.org> CC: Eric Leblond <eric@regit.org> Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-07-18ipv4: save cpu cycles from check_leaf()Eric Dumazet
Compiler is not smart enough to avoid double BSWAP instructions in ntohl(inet_make_mask(plen)). Lets cache this value in struct leaf_info, (fill a hole on 64bit arches) With route cache disabled, this saves ~2% of cpu in udpflood bench on x86_64 machine. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-18netfilter: nfnetlink_queue: provide rcu enabled callbacksEric Dumazet
nenetlink_queue operations on SMP are not efficent if several queues are used, because of nfnl_mutex contention when applications give packet verdict. Use new call_rcu field in struct nfnl_callback to advertize a callback that is called under rcu_read_lock instead of nfnl_mutex. On my 2x4x2 machine, I was able to reach 2.000.000 pps going through user land returning NF_ACCEPT verdicts without losses, instead of less than 500.000 pps before patch. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Florian Westphal <fw@strlen.de> CC: Eric Leblond <eric@regit.org> Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-07-18netfilter: nfnetlink: add RCU in nfnetlink_rcv_msg()Eric Dumazet
Goal of this patch is to permit nfnetlink providers not mandate nfnl_mutex being held while nfnetlink_rcv_msg() calls them. If struct nfnl_callback contains a non NULL call_rcu(), then nfnetlink_rcv_msg() will use it instead of call() field, holding rcu_read_lock instead of nfnl_mutex Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Florian Westphal <fw@strlen.de> CC: Eric Leblond <eric@regit.org> Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-07-18net: Add ->neigh_lookup() operation to dst_opsDavid S. Miller
In the future dst entries will be neigh-less. In that environment we need to have an easy transition point for current users of dst->neighbour outside of the packet output fast path. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-17net: Abstract dst->neighbour accesses behind helpers.David S. Miller
dst_{get,set}_neighbour() Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-17ipv6: Get rid of rt6i_nexthop macro.David S. Miller
It just makes it harder to see 1) what the code is doing and 2) grep for all users of dst{->,.}neighbour Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-17neigh: Pass neighbour entry to output ops.David S. Miller
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>
2011-07-17net: vlan, qlcnic: make vlan_find_dev privateDavid Lamparter
there is only one user of vlan_find_dev outside of the actual vlan code: qlcnic uses it to iterate over some VLANs it knows. let's just make vlan_find_dev private to the VLAN code and have the iteration in qlcnic be a bit more direct. (a few rcu dereferences less too) Signed-off-by: David Lamparter <equinox@diac24.net> Cc: Patrick McHardy <kaber@trash.net> Cc: Amit Kumar Salecha <amit.salecha@qlogic.com> Cc: Anirban Chakraborty <anirban.chakraborty@qlogic.com> Cc: linux-driver@qlogic.com Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-16neigh: Kill ndisc_ops->queue_xmitDavid S. Miller
It is always dev_queue_xmit(). Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-16neigh: Kill hh_cache->hh_outputDavid S. Miller
It's just taking on one of two possible values, either neigh_ops->output or dev_queue_xmit(). And this is purely depending upon whether nud_state has NUD_CONNECTED set or not. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-16neigh: Kill neigh_ops->hh_outputDavid S. Miller
It's always dev_queue_xmit(). Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-16neigh: Simply destroy handling wrt. hh_cache.David S. Miller
Now that hh_cache entries are embedded inside of neighbour entries, their lifetimes and accesses are now synchronous to that of the encompassing neighbour object. Therefore we don't need to hook up the blackhole op to hh_output on destroy. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-16net: Create and use new helper, neigh_output().David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-16ipv6: Use calculated 'neigh' instead of re-evaluating dst->neighbourDavid S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
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