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2011-12-05net: Rename dst_get_neighbour{, _raw} to dst_get_neighbour_noref{, _raw}.David Miller
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>
2011-12-05Merge branch 'for-davem' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2011-12-05ipv4: Fix peer validation on cached lookup.David S. Miller
If ipv4_valdiate_peer() fails during a cached entry lookup, we'll NULL derer since the loop iterator assumes rth is not NULL. Letting this be handled as a failure is just bogus, so just make it not fail. If we have trouble getting a non-NULL neighbour for the redirected gateway, just restore the original gateway and continue. The very next use of this cached route will try again. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-05Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2011-12-04ipv6: add ip6_route_lookupFlorian Westphal
like rt6_lookup, but allows caller to pass in flowi6 structure. Will be used by the upcoming ipv6 netfilter reverse path filter match. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-04netfilter: add ipv4 reverse path filter matchFlorian Westphal
This tries to do the same thing as fib_validate_source(), but differs in several aspects. The most important difference is that the reverse path filter built into fib_validate_source uses the oif as iif when performing the reverse lookup. We do not do this, as the oif is not yet known by the time the PREROUTING hook is invoked. We can't wait until FORWARD chain because by the time FORWARD is invoked ipv4 forward path may have already sent icmp messages is response to to-be-discarded-via-rpfilter packets. To avoid the such an additional lookup in PREROUTING, Patrick McHardy suggested to attach the path information directly in the match (i.e., just do what the standard ipv4 path does a bit earlier in PREROUTING). This works, but it also has a few caveats. Most importantly, when using marks in PREROUTING to re-route traffic based on the nfmark, -m rpfilter would have to be used after the nfmark has been set; otherwise the nfmark would have no effect (because the route is already attached). Another problem would be interaction with -j TPROXY, as this target sets an nfmark and uses ACCEPT instead of continue, i.e. such a version of -m rpfilter cannot be used for the initial to-be-intercepted packets. In case in turns out that the oif is required, we can add Patricks suggestion with a new match option (e.g. --rpf-use-oif) to keep ruleset compatibility. Another difference to current builtin ipv4 rpfilter is that packets subject to ipsec transformation are not automatically excluded. If you want this, simply combine -m rpfilter with the policy match. Packets arriving on loopback interfaces always match. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-04net: ipv4: export fib_lookup and fib_table_lookupFlorian Westphal
The reverse path filter module will use fib_lookup. If CONFIG_IP_MULTIPLE_TABLES is not set, fib_lookup is only a static inline helper that calls fib_table_lookup, so export that too. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-04tcp: tcp_sendmsg() page recyclingEric Dumazet
If our TCP_PAGE(sk) is not shared (page_count() == 1), we can set page offset to 0. This permits better filling of the pages on small to medium tcp writes. "tbench 16" results on my dev server (2x4x2 machine) : Before : 3072 MB/s After : 3146 MB/s (2.4 % gain) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-04tcp: take care of misalignmentsEric Dumazet
We discovered that TCP stack could retransmit misaligned skbs if a malicious peer acknowledged sub MSS frame. This currently can happen only if output interface is non SG enabled : If SG is enabled, tcp builds headless skbs (all payload is included in fragments), so the tcp trimming process only removes parts of skb fragments, header stay aligned. Some arches cant handle misalignments, so force a head reallocation and shrink headroom to MAX_TCP_HEADER. Dont care about misaligments on x86 and PPC (or other arches setting NET_IP_ALIGN to 0) This patch introduces __pskb_copy() which can specify the headroom of new head, and pskb_copy() becomes a wrapper on top of __pskb_copy() Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-04tcp: drop SYN+FIN messagesEric Dumazet
Denys Fedoryshchenko reported that SYN+FIN attacks were bringing his linux machines to their limits. Dont call conn_request() if the TCP flags includes SYN flag 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>
2011-12-03Merge branch 'for-upstream' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
2011-12-03ipv6: Kill ndisc_get_neigh() inline helper.David S. Miller
It's only used in net/ipv6/route.c and the NULL device check is superfluous for all of the existing call sites. Just expand the __ndisc_lookup_errno() call at each location. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-03ipv6: Various cleanups in route.cDavid S. Miller
1) x == NULL --> !x 2) x != NULL --> x 3) (x&BIT) --> (x & BIT) 4) (BIT1|BIT2) --> (BIT1 | BIT2) 5) proper argument and struct member alignment Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-03ipv6: Various cleanups in ip6_route.cDavid S. Miller
1) x == NULL --> !x 2) x != NULL --> x 3) if() --> if () 4) while() --> while () 5) (x & BIT) == 0 --> !(x & BIT) 6) (x&BIT) --> (x & BIT) 7) x=y --> x = y 8) (BIT1|BIT2) --> (BIT1 | BIT2) 9) if ((x & BIT)) --> if (x & BIT) 10) proper argument and struct member alignment Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-03net: Add Open vSwitch kernel components.Jesse Gross
Open vSwitch is a multilayer Ethernet switch targeted at virtualized environments. In addition to supporting a variety of features expected in a traditional hardware switch, it enables fine-grained programmatic extension and flow-based control of the network. This control is useful in a wide variety of applications but is particularly important in multi-server virtualization deployments, which are often characterized by highly dynamic endpoints and the need to maintain logical abstractions for multiple tenants. The Open vSwitch datapath provides an in-kernel fast path for packet forwarding. It is complemented by a userspace daemon, ovs-vswitchd, which is able to accept configuration from a variety of sources and translate it into packet processing rules. See http://openvswitch.org for more information and userspace utilities. Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-12-03ipv6: Add fragment reporting to ipv6_skip_exthdr().Jesse Gross
While parsing through IPv6 extension headers, fragment headers are skipped making them invisible to the caller. This reports the fragment offset of the last header in order to make it possible to determine whether the packet is fragmented and, if so whether it is a first or last fragment. Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-12-03vlan: Move vlan_set_encap_proto() to vlan header filePravin B Shelar
Open vSwitch needs this function for vlan handling. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-12-03genetlink: Add lockdep_genl_is_held().Pravin B Shelar
Open vSwitch uses genl_mutex locking to protect datapath data-structures like flow-table, flow-actions. Following patch adds lockdep_genl_is_held() which is used for rcu annotation to prove locking. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-12-03genetlink: Add genl_notify()Pravin B Shelar
Open vSwitch uses Generic Netlink interface for communication between userspace and kernel module. genl_notify() is used for sending notification back to userspace. genl_notify() is analogous to rtnl_notify() but uses genl_sock instead of rtnl. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-12-03ipv4: make sure RTO_ONLINK is saved in routing cacheJulian Anastasov
__mkroute_output fails to work with the original tos and uses value with stripped RTO_ONLINK bit. Make sure we put the original TOS bits into rt_key_tos because it used to match cached route. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-03Bluetooth: trivial: correct check for LMP versionAndrei Emeltchenko
Make sure that code match exactly what comment says about pre 1.2 bluetooth version. Since this is HCI detail lmp_ver changed to hci_ver. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-03Bluetooth: Remove magic bluetooth version numbersAndrei Emeltchenko
Use bluetooth names instead of BT SIG assigned numbers Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-03Merge branch 'master' of ↵Gustavo F. Padovan
git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth
2011-12-03Bluetooth: Correct version check in hci_setupAndrei Emeltchenko
Check for hci_ver instead of lmp_ver Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-02Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/iwlwifi/iwl-agn.c drivers/net/wireless/libertas/cfg.c
2011-12-02atm: clip: Remove code commented out since eternity.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2011-12-02treewide: Fix typos in various parts of the kernel, and fix some comments.Justin P. Mattock
The below patch fixes some typos in various parts of the kernel, as well as fixes some comments. Please let me know if I missed anything, and I will try to get it changed and resent. Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-12-02Bluetooth: remove old codeAndrei Emeltchenko
Remove old code not touched for several years. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-02Bluetooth: LE Set Scan Parameter CommandAndre Guedes
This patch adds the parameter struct and the command complete event handler to the LE Set Scan Parameter HCI command. Signed-off-by: Andre Guedes <andre.guedes@openbossa.org> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-02Bluetooth: Add dev_flags to struct hci_devAndre Guedes
This patch adds the dev_flags field to struct hci_dev. This new flags variable should be used to define flags related to BR/EDR and/or LE controller itself. It should be used to define flags which represents states from the controller. The dev_flags is cleared in case the controller sends a Reset Command Complete Event to the host. Also, this patch adds the HCI_LE_SCAN flag which was created to track if the controller is performing LE scan or not. The flag is set/cleared when the controller starts/stops scanning. This is an initial effort to stop using hdev->flags to define internal flags since it is exported to userspace by an ioctl. Signed-off-by: Andre Guedes <andre.guedes@openbossa.org> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-02Bluetooth: Add HCI Read Flow Control Mode functionAndrei Emeltchenko
Upstream Code Aurora function with minor trivial fixes. Origin: git://codeaurora.org/kernel/msm.git Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (73 commits) netfilter: Remove ADVANCED dependency from NF_CONNTRACK_NETBIOS_NS ipv4: flush route cache after change accept_local sch_red: fix red_change Revert "udp: remove redundant variable" bridge: master device stuck in no-carrier state forever when in user-stp mode ipv4: Perform peer validation on cached route lookup. net/core: fix rollback handler in register_netdevice_notifier sch_red: fix red_calc_qavg_from_idle_time bonding: only use primary address for ARP ipv4: fix lockdep splat in rt_cache_seq_show sch_teql: fix lockdep splat net: fec: Select the FEC driver by default for i.MX SoCs isdn: avoid copying too long drvid isdn: make sure strings are null terminated netlabel: Fix build problems when IPv6 is not enabled sctp: better integer overflow check in sctp_auth_create_key() sctp: integer overflow in sctp_auth_create_key() ipv6: Set mcast_hops to IPV6_DEFAULT_MCASTHOPS when -1 was given. net: Fix corruption in /proc/*/net/dev_mcast mac80211: fix race between the AGG SM and the Tx data path ...
2011-12-01netfilter: Remove ADVANCED dependency from NF_CONNTRACK_NETBIOS_NSDavid S. Miller
firewalld in Fedora 16 needs this. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01ipv4: flush route cache after change accept_localPeter Pan(潘卫平)
After reset ipv4_devconf->data[IPV4_DEVCONF_ACCEPT_LOCAL] to 0, we should flush route cache, or it will continue receive packets with local source address, which should be dropped. Signed-off-by: Weiping Pan <panweiping3@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01sch_red: fix red_changeEric Dumazet
Le mercredi 30 novembre 2011 à 14:36 -0800, Stephen Hemminger a écrit : > (Almost) nobody uses RED because they can't figure it out. > According to Wikipedia, VJ says that: > "there are not one, but two bugs in classic RED." RED is useful for high throughput routers, I doubt many linux machines act as such devices. I was considering adding Adaptative RED (Sally Floyd, Ramakrishna Gummadi, Scott Shender), August 2001 In this version, maxp is dynamic (from 1% to 50%), and user only have to setup min_th (target average queue size) (max_th and wq (burst in linux RED) are automatically setup) By the way it seems we have a small bug in red_change() if (skb_queue_empty(&sch->q)) red_end_of_idle_period(&q->parms); First, if queue is empty, we should call red_start_of_idle_period(&q->parms); Second, since we dont use anymore sch->q, but q->qdisc, the test is meaningless. Oh well... [PATCH] sch_red: fix red_change() Now RED is classful, we must check q->qdisc->q.qlen, and if queue is empty, we start an idle period, not end it. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01dccp: Fix compile warning in probe code.David S. Miller
Commit 1386be55e32a3c5d8ef4a2b243c530a7b664c02c ("dccp: fix auto-loading of dccp(_probe)") fixed a bug but created a new compiler warning: net/dccp/probe.c: In function ‘dccpprobe_init’: net/dccp/probe.c:166:2: warning: the omitted middle operand in ?: will always be ‘true’, suggest explicit middle operand [-Wparentheses] try_then_request_module() is built for situations where the "existence" test is some lookup function that returns a non-NULL object on success, and with a reference count of some kind held. Here we're looking for a success return of zero from the jprobe registry. Instead of fighting the way try_then_request_module() works, simply open code what we want to happen in a local helper function. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01SUNRPC: Ensure we always bump the backlog queue in xprt_free_slotTrond Myklebust
Whenever we free a slot, we know that the resulting xprt->num_reqs will be less than xprt->max_reqs, so we know that we can release at least one backlogged rpc_task. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org [>=3.1]
2011-12-01Revert "udp: remove redundant variable"David S. Miller
This reverts commit 81d54ec8479a2c695760da81f05b5a9fb2dbe40a. If we take the "try_again" goto, due to a checksum error, the 'len' has already been truncated. So we won't compute the same values as the original code did. Reported-by: paul bilke <fsmail@conspiracy.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01bridge: master device stuck in no-carrier state forever when in user-stp modeVitalii Demianets
When in user-stp mode, bridge master do not follow state of its slaves, so after the following sequence of events it can stuck forever in no-carrier state: 1) turn stp off 2) put all slaves down - master device will follow their state and also go in no-carrier state 3) turn stp on with bridge-stp script returning 0 (go to the user-stp mode) Now bridge master won't follow slaves' state and will never reach running state. This patch solves the problem by making user-stp and kernel-stp behavior similar regarding master following slaves' states. Signed-off-by: Vitalii Demianets <vitas@nppfactor.kiev.ua> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01SUNRPC: Fix the execution time statistics in the face of RPC restartsTrond Myklebust
If the rpc_task gets restarted, then we want to ensure that we don't double-count the execution time statistics, timeout data, etc. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-12-01ipv4: Perform peer validation on cached route lookup.David S. Miller
Otherwise we won't notice the peer GENID change. Reported-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01ipv4: use a 64bit load/store in output pathEric Dumazet
gcc compiler is smart enough to use a single load/store if we memcpy(dptr, sptr, 8) on x86_64, regardless of CONFIG_CC_OPTIMIZE_FOR_SIZE In IP header, daddr immediately follows saddr, this wont change in the future. We only need to make sure our flowi4 (saddr,daddr) fields wont break the rule. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01dccp: Evaluate ip_hdr() only once in dccp_v4_route_skb().David S. Miller
This also works around a bogus gcc warning generated by an upcoming patch from Eric Dumazet that rearranges the layout of struct flowi4. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01net: net_device flags is an unsigned intEric Dumazet
commit b00055aacdb ([NET] core: add RFC2863 operstate) changed net_device flags from unsigned short to unsigned int. Some core functions still assume its an unsigned short. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01netem: fix build error on 32bit archesEric Dumazet
ERROR: "__udivdi3" [net/sched/sch_netem.ko] undefined! Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-01Revert "mac80211: clear sta.drv_priv on reconfiguration"John W. Linville
This reverts commit f785d83a19bca326f79d127a413e35769afc0105. This was provoking WARNINGs from the iwlegacy drivers. Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-01Bluetooth: Centralize SMP pairing failure handlingBrian Gix
Signed-off-by: Brian Gix <bgix@codeaurora.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-01Bluetooth: Cleanup blkcipher on SMP terminationBrian Gix
The blkcipher must be freed to avoid memory leak. Signed-off-by: Brian Gix <bgix@codeaurora.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-01Bluetooth: Add HCI User Passkey Req Evt handlingBrian Gix
Some MITM scenarios require handling of the User Passkey Request event, by querying the user, and passing the response back. Signed-off-by: Brian Gix <bgix@codeaurora.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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