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2008-06-27mac80211: tx.c use new frame control helpersHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-27mac80211: wep.c use new frame control helpersHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-27mac80211: Let drivers have access to TKIP key offets for TX and RX MICLuis R. Rodriguez
Some drivers may want to to use the TKIP key offsets for TX and RX MIC so lets move this out. Lets also clear up a bit how this is used internally in mac80211. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-27mac80211: rename TKIP debugging Kconfig symbolJohannes Berg
... to MAC80211_TKIP_DEBUG rather than TKIP_DEBUG. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26mac80211: add single function calling tx handlersJohannes Berg
This modifies mac80211 to only have a single function calling the TX handlers rather than them being invoked in multiple places. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26mac80211: use separate spinlock for sta flagsJohannes Berg
David Ellingsworth posted a bug that was only noticable on UP/NO-PREEMPT and Michael correctly analysed it to be a spin_lock_bh() section within a spin_lock_irqsave() section. This adds a separate spinlock for the sta_info flags to fix that issue and avoid having to take much care about where the sta flag manipulation functions are called. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Reported-By: David Ellingsworth <david@identd.dyndns.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26mac80211: remove shared key todoJohannes Berg
Adding shared key authentication is not going to happen anyway. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26mac80211: 11h - Handling measurement requestAssaf Krauss
This patch handles the 11h measurement request information element. This is minimal requested implementation - refuse measurement. Signed-off-by: Assaf Krauss <assaf.krauss@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26mac80211: 11h Infrastructure - ParsingAssaf Krauss
This patch introduces parsing of 11h and 11d related elements from incoming management frames. Signed-off-by: Assaf Krauss <assaf.krauss@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: rename the rfkill_state states and add block-locked stateHenrique de Moraes Holschuh
The current naming of rfkill_state causes a lot of confusion: not only the "kill" in rfkill suggests negative logic, but also the fact that rfkill cannot turn anything on (it can just force something off or stop forcing something off) is often forgotten. Rename RFKILL_STATE_OFF to RFKILL_STATE_SOFT_BLOCKED (transmitter is blocked and will not operate; state can be changed by a toggle_radio request), and RFKILL_STATE_ON to RFKILL_STATE_UNBLOCKED (transmitter is not blocked, and may operate). Also, add a new third state, RFKILL_STATE_HARD_BLOCKED (transmitter is blocked and will not operate; state cannot be changed through a toggle_radio request), which is used by drivers to indicate a wireless transmiter was blocked by a hardware rfkill line that accepts no overrides. Keep the old names as #defines, but document them as deprecated. This way, drivers can be converted to the new names *and* verified to actually use rfkill correctly one by one. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: do not allow userspace to override ALL RADIOS OFFHenrique de Moraes Holschuh
SW_RFKILL_ALL is the "emergency power-off all radios" input event. It must be handled, and must always do the same thing as far as the rfkill system is concerned: all transmitters are to go *immediately* offline. For safety, do NOT allow userspace to override EV_SW SW_RFKILL_ALL OFF. As long as rfkill-input is loaded, that event will *always* be processed, and it will *always* force all rfkill switches to disable all wireless transmitters, regardless of user_claim attribute or anything else. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: drop current_state from tasks in rfkill-inputFabien Crespel
The whole current_state thing seems completely useless and a source of problems in rfkill-input, since state comparison is already done in rfkill, and rfkill-input is more than likely to become out of sync with the real state. Signed-off-by: Fabien Crespel <fabien@crespel.net> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: add uevent notificationsHenrique de Moraes Holschuh
Use the notification chains to also send uevents, so that userspace can be notified of state changes of every rfkill switch. Userspace should use these events for OSD/status report applications and rfkill GUI frontends. HAL might want to broadcast them over DBUS, for example. It might be also useful for userspace implementations of rfkill-input, or to use HAL as the platform driver which promotes rfkill switch change events into input events (to synchronize all other switches) when necessary for platforms that lack a convenient platform-specific kernel module to do it. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: add type string helperHenrique de Moraes Holschuh
We will need access to the rfkill switch type in string format for more than just sysfs. Therefore, move it to a generic helper. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: add notifier chains supportHenrique de Moraes Holschuh
Add a notifier chain for use by the rfkill class. This notifier chain signals the following events (more to be added when needed): 1. rfkill: rfkill device state has changed A pointer to the rfkill struct will be passed as a parameter. The notifier message types have been added to include/linux/rfkill.h instead of to include/linux/notifier.h in order to avoid the madness of modifying a header used globally (and that triggers an almost full tree rebuild every time it is touched) with information that is of interest only to code that includes the rfkill.h header. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: rework suspend and resume handlersHenrique de Moraes Holschuh
The resume handler should reset the wireless transmitter rfkill state to exactly what it was when the system was suspended. Do it, and do it using the normal routines for state change while at it. The suspend handler should force-switch the transmitter to blocked state, ignoring caches. Do it. Also take an opportunity shot to rfkill_remove_switch() and also force the transmitter to blocked state there, bypassing caches. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: add the WWAN radio typeHenrique de Moraes Holschuh
Unfortunately, instead of adding a generic Wireless WAN type, a technology- specific type (WiMAX) was added. That's useless for other WWAN devices, such as EDGE, UMTS, X-RTT and other such radios. Add a WWAN rfkill type for generic wireless WAN devices. No keys are added as most devices really want to use KEY_WLAN for WWAN control (in a cycle of none, WLAN, WWAN, WLAN+WWAN) and need no specific keycode added. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Cc: Iñaky Pérez-González <inaky.perez-gonzalez@intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: add read-write rfkill switch supportHenrique de Moraes Holschuh
Currently, rfkill support for read/write rfkill switches is hacked through a round-trip over the input layer and rfkill-input to let a driver sync rfkill->state to hardware changes. This is buggy and sub-optimal. It causes real problems. It is best to think of the rfkill class as supporting only write-only switches at the moment. In order to implement the read/write functionality properly: Add a get_state() hook that is called by the class every time it needs to fetch the current state of the switch. Add a call to this hook every time the *current* state of the radio plays a role in a decision. Also add a force_state() method that can be used to forcefully syncronize the class' idea of the current state of the switch. This allows for a faster implementation of the read/write functionality, as a driver which get events on switch changes can avoid the need for a get_state() hook. If the get_state() hook is left as NULL, current behaviour is maintained, so this change is fully backwards compatible with the current rfkill drivers. For hardware that issues events when the rfkill state changes, leave get_state() NULL in the rfkill struct, set the initial state properly before registering with the rfkill class, and use the force_state() method in the driver to keep the rfkill interface up-to-date. get_state() can be called by the class from atomic context. It must not sleep. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: add parameter to disable radios by defaultHenrique de Moraes Holschuh
Currently, radios are always enabled when their rfkill interface is registered. This is not optimal, the safest state for a radio is to be offline unless the user turns it on. Add a module parameter that causes all radios to be disabled when their rfkill interface is registered. The module default is not changed so unless the parameter is used, radios will still be forced to their enabled state when they are registered. The new rfkill module parameter is called "default_state". Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: handle SW_RFKILL_ALL eventsHenrique de Moraes Holschuh
Teach rfkill-input how to handle SW_RFKILL_ALL events (new name for the SW_RADIO event). SW_RFKILL_ALL is an absolute enable-or-disable command that is tied to all radios in a system. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-26rfkill: fix minor typo in kernel docHenrique de Moraes Holschuh
Fix a minor typo in an exported function documentation Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-25Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/wireless-2.6John W. Linville
2008-06-20sctp: Kill unused variable in sctp_assoc_bh_rcv()Vlad Yasevich
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-19net: Discard and warn about LRO'd skbs received for forwardingBen Hutchings
Add skb_warn_if_lro() to test whether an skb was received with LRO and warn if so. Change br_forward(), ip_forward() and ip6_forward() to call it) and discard the skb if it returns true. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-19net: Disable LRO on devices that are forwardingBen Hutchings
Large Receive Offload (LRO) is only appropriate for packets that are destined for the host, and should be disabled if received packets may be forwarded. It can also confuse the GSO on output. Add dev_disable_lro() function which uses the appropriate ethtool ops to disable LRO if enabled. Add calls to dev_disable_lro() in br_add_if() and functions that enable IPv4 and IPv6 forwarding. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-19sctp: Follow security requirement of responding with 1 packetVlad Yasevich
RFC 4960, Section 11.4. Protection of Non-SCTP-Capable Hosts When an SCTP stack receives a packet containing multiple control or DATA chunks and the processing of the packet requires the sending of multiple chunks in response, the sender of the response chunk(s) MUST NOT send more than one packet. If bundling is supported, multiple response chunks that fit into a single packet MAY be bundled together into one single response packet. If bundling is not supported, then the sender MUST NOT send more than one response chunk and MUST discard all other responses. Note that this rule does NOT apply to a SACK chunk, since a SACK chunk is, in itself, a response to DATA and a SACK does not require a response of more DATA. We implement this by not servicing our outqueue until we reach the end of the packet. This enables maximum bundling. We also identify 'response' chunks and make sure that we only send 1 packet when sending such chunks. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-19sctp: Validate Initiate Tag when handling ICMP messageWei Yongjun
This patch add to validate initiate tag and chunk type if verification tag is 0 when handling ICMP message. RFC 4960, Appendix C. ICMP Handling ICMP6) An implementation MUST validate that the Verification Tag contained in the ICMP message matches the Verification Tag of the peer. If the Verification Tag is not 0 and does NOT match, discard the ICMP message. If it is 0 and the ICMP message contains enough bytes to verify that the chunk type is an INIT chunk and that the Initiate Tag matches the tag of the peer, continue with ICMP7. If the ICMP message is too short or the chunk type or the Initiate Tag does not match, silently discard the packet. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-19Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/mac80211/tx.c
2008-06-18mac80211: detect driver tx bugsJohannes Berg
When a driver rejects a frame in it's ->tx() callback, it must also stop queues, otherwise mac80211 can go into a loop here. Detect this situation and abort the loop after five retries, warning about the driver bug. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-18netlink: genl: fix circular lockingPatrick McHardy
genetlink has a circular locking dependency when dumping the registered families: - dump start: genl_rcv() : take genl_mutex genl_rcv_msg() : call netlink_dump_start() while holding genl_mutex netlink_dump_start(), netlink_dump() : take nlk->cb_mutex ctrl_dumpfamily() : try to detect this case and not take genl_mutex a second time - dump continuance: netlink_rcv() : call netlink_dump netlink_dump : take nlk->cb_mutex ctrl_dumpfamily() : take genl_mutex Register genl_lock as callback mutex with netlink to fix this. This slightly widens an already existing module unload race, the genl ops used during the dump might go away when the module is unloaded. Thomas Graf is working on a seperate fix for this. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-18netdevice: Fix promiscuity and allmulti overflowWang Chen
Max of promiscuity and allmulti plus positive @inc can cause overflow. Fox example: when allmulti=0xFFFFFFFF, any caller give dev_set_allmulti() a positive @inc will cause allmulti be off. This is not what we want, though it's rare case. The fix is that only negative @inc will cause allmulti or promiscuity be off and when any caller makes the counters touch the roof, we return error. Change of v2: Change void function dev_set_promiscuity/allmulti to return int. So callers can get the overflow error. Caller's fix will be done later. Change of v3: 1. Since we return error to caller, we don't need to print KERN_ERROR, KERN_WARNING is enough. 2. In dev_set_promiscuity(), if __dev_set_promiscuity() failed, we return at once. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-18Revert "mac80211: Use skb_header_cloned() on TX path."David S. Miller
This reverts commit 608961a5eca8d3c6bd07172febc27b5559408c5d. The problem is that the mac80211 stack not only needs to be able to muck with the link-level headers, it also might need to mangle all of the packet data if doing sw wireless encryption. This fixes kernel bugzilla #10903. Thanks to Didier Raboud (for the bugzilla report), Andrew Prince (for bisecting), Johannes Berg (for bringing this bisection analysis to my attention), and Ilpo (for trying to analyze this purely from the TCP side). In 2.6.27 we can take another stab at this, by using something like skb_cow_data() when the TX path of mac80211 ends up with a non-NULL tx->key. The ESP protocol code in the IPSEC stack can be used as a model for implementation. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-18ipv6: minor cleanup in net/ipv6/tcp_ipv6.c [RESEND ].Rami Rosen
In net/ipv6/tcp_ipv6.c: - Remove unneeded tcp_v6_send_check() declaration. Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17net: Add sk_set_socket() helper.David S. Miller
In order to more easily grep for all things that set sk->sk_socket, add sk_set_socket() helper inline function. Suggested (although only half-seriously) by Evgeniy Polyakov. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17af_unix: fix 'poll for write'/ connected DGRAM socketsRainer Weikusat
The unix_dgram_sendmsg routine implements a (somewhat crude) form of receiver-imposed flow control by comparing the length of the receive queue of the 'peer socket' with the max_ack_backlog value stored in the corresponding sock structure, either blocking the thread which caused the send-routine to be called or returning EAGAIN. This routine is used by both SOCK_DGRAM and SOCK_SEQPACKET sockets. The poll-implementation for these socket types is datagram_poll from core/datagram.c. A socket is deemed to be writeable by this routine when the memory presently consumed by datagrams owned by it is less than the configured socket send buffer size. This is always wrong for connected PF_UNIX non-stream sockets when the abovementioned receive queue is currently considered to be full. 'poll' will then return, indicating that the socket is writeable, but a subsequent write result in EAGAIN, effectively causing an (usual) application to 'poll for writeability by repeated send request with O_NONBLOCK set' until it has consumed its time quantum. The change below uses a suitably modified variant of the datagram_poll routines for both type of PF_UNIX sockets, which tests if the recv-queue of the peer a socket is connected to is presently considered to be 'full' as part of the 'is this socket writeable'-checking code. The socket being polled is additionally put onto the peer_wait wait queue associated with its peer, because the unix_dgram_sendmsg routine does a wake up on this queue after a datagram was received and the 'other wakeup call' is done implicitly as part of skb destruction, meaning, a process blocked in poll because of a full peer receive queue could otherwise sleep forever if no datagram owned by its socket was already sitting on this queue. Among this change is a small (inline) helper routine named 'unix_recvq_full', which consolidates the actual testing code (in three different places) into a single location. Signed-off-by: Rainer Weikusat <rweikusat@mssgmbh.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17Merge branch 'davem-next' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
2008-06-17ax25: Fix std timer socket destroy handling.David S. Miller
Tihomir Heidelberg - 9a4gl, reports: -------------------- I would like to direct you attention to one problem existing in ax.25 kernel since 2.4. If listening socket is closed and its SKB queue is released but those sockets get weird. Those "unAccepted()" sockets should be destroyed in ax25_std_heartbeat_expiry, but it will not happen. And there is also a note about that in ax25_std_timer.c: /* Magic here: If we listen() and a new link dies before it is accepted() it isn't 'dead' so doesn't get removed. */ This issue cause ax25d to stop accepting new connections and I had to restarted ax25d approximately each day and my services were unavailable. Also netstat -n -l shows invalid source and device for those listening sockets. It is strange why ax25d's listening socket get weird because of this issue, but definitely when I solved this bug I do not have problems with ax25d anymore and my ax25d can run for months without problems. -------------------- Actually as far as I can see, this problem is even in releases as far back as 2.2.x as well. It seems senseless to special case this test on TCP_LISTEN state. Anything still stuck in state 0 has no external references and we can just simply kill it off directly. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17udp: sk_drops handlingEric Dumazet
In commits 33c732c36169d7022ad7d6eb474b0c9be43a2dc1 ([IPV4]: Add raw drops counter) and a92aa318b4b369091fd80433c80e62838db8bc1c ([IPV6]: Add raw drops counter), Wang Chen added raw drops counter for /proc/net/raw & /proc/net/raw6 This patch adds this capability to UDP sockets too (/proc/net/udp & /proc/net/udp6). This means that 'RcvbufErrors' errors found in /proc/net/snmp can be also be examined for each udp socket. # grep Udp: /proc/net/snmp Udp: InDatagrams NoPorts InErrors OutDatagrams RcvbufErrors SndbufErrors Udp: 23971006 75 899420 16390693 146348 0 # cat /proc/net/udp sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt --- uid timeout inode ref pointer drops 75: 00000000:02CB 00000000:0000 07 00000000:00000000 00:00000000 00000000 --- 0 0 2358 2 ffff81082a538c80 0 111: 00000000:006F 00000000:0000 07 00000000:00000000 00:00000000 00000000 --- 0 0 2286 2 ffff81042dd35c80 146348 In this example, only port 111 (0x006F) was flooded by messages that user program could not read fast enough. 146348 messages were lost. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-18bonding: Allow setting max_bonds to zeroJay Vosburgh
Permit bonding to function rationally if max_bonds is set to zero. This will load the module, but create no master devices (which can be created via sysfs). Requires some change to bond_create_sysfs; currently, the netdev sysfs directory is determined from the first bonding device created, but this is no longer possible. Instead, an interface from net/core is created to create and destroy files in net_class. Based on a patch submitted by Phil Oester <kernel@linuxaces.com>. Modified by Jay Vosburgh to fix the sysfs issue mentioned above and to update the documentation. Signed-off-by: Phil Oester <kernel@linuxace.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-06-17net/core: add NETDEV_BONDING_FAILOVER eventOr Gerlitz
Add NETDEV_BONDING_FAILOVER event to be used in a successive patch by bonding to announce fail-over for the active-backup mode through the netdev events notifier chain mechanism. Such an event can be of use for the RDMA CM (communication manager) to let native RDMA ULPs (eg NFS-RDMA, iSER) always be aligned with the IP stack, in the sense that they use the same ports/links as the stack does. More usages can be done to allow monitoring tools based on netlink events being aware to bonding fail-over. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-06-17rose: improving AX25 routing frames via ROSE networkBernard Pidoux
ROSE network is organized through nodes connected via hamradio or Internet. AX25 packet radio frames sent to a remote ROSE address destination are routed through these nodes. Without the present patch, automatic routing mechanism did not work optimally due to an improper parameter checking. rose_get_neigh() function is called either by rose_connect() or by rose_route_frame(). In the case of a call from rose_connect(), f0 timer is checked to find if a connection is already pending. In that case it returns the address of the neighbour, or returns a NULL otherwise. When called by rose_route_frame() the purpose was to route a packet AX25 frame through an adjacent node given a destination rose address. However, in that case, t0 timer checked does not indicate if the adjacent node is actually connected even if the timer is not null. Thus, for each frame sent, the function often tried to start a new connexion even if the adjacent node was already connected. The patch adds a "new" parameter that is true when the function is called by rose route_frame(). This instructs rose_get_neigh() to check node parameter "restarted". If restarted is true it means that the route to the destination address is opened via a neighbour node already connected. If "restarted" is false the function returns a NULL. In that case the calling function will initiate a new connection as before. This results in a fast routing of frames, from nodes to nodes, until destination is reached, as originaly specified by ROSE protocole. Signed-off-by: Bernard Pidoux <f6bvp@amsat.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17xfrm: fix fragmentation for ipv4 xfrm tunnelSteffen Klassert
When generating the ip header for the transformed packet we just copy the frag_off field of the ip header from the original packet to the ip header of the new generated packet. If we receive a packet as a chain of fragments, all but the last of the new generated packets have the IP_MF flag set. We have to mask the frag_off field to only keep the IP_DF flag from the original packet. This got lost with git commit 36cf9acf93e8561d9faec24849e57688a81eb9c5 ("[IPSEC]: Separate inner/outer mode processing on output") Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17atm: use const where reasonableMitchell Blank Jr
From: Mitchell Blank Jr <mitch@sfgoth.com> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17bridge: fix IPV6=n buildRandy Dunlap
Fix bridge netfilter code so that it uses CONFIG_IPV6 as needed: net/built-in.o: In function `ebt_filter_ip6': ebt_ip6.c:(.text+0x87c37): undefined reference to `ipv6_skip_exthdr' net/built-in.o: In function `ebt_log_packet': ebt_log.c:(.text+0x88dee): undefined reference to `ipv6_skip_exthdr' make[1]: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17bridge: make bridge address settings stickyStephen Hemminger
Normally, the bridge just chooses the smallest mac address as the bridge id and mac address of bridge device. But if the administrator has explictly set the interface address then don't change it. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17bridge: handle process all link-local framesStephen Hemminger
Any frame addressed to link-local addresses should be processed by local receive path. The earlier code would process them only if STP was enabled. Since there are other frames like LACP for bonding, we should always process them. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17sctp: fix error path in sctp_proc_initPavel Emelyanov
After the sctp_remaddr_proc_init failed, the proper rollback is not the sctp_remaddr_proc_exit, but the sctp_assocs_proc_exit. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17netfilter: nf_conntrack_h323: fix module unload crashPatrick McHardy
The H.245 helper is not registered/unregistered, but assigned to connections manually from the Q.931 helper. This means on unload existing expectations and connections using the helper are not cleaned up, leading to the following oops on module unload: CPU 0 Unable to handle kernel paging request at virtual address c00a6828, epc == 802224dc, ra == 801d4e7c Oops[#1]: Cpu 0 $ 0 : 00000000 00000000 00000004 c00a67f0 $ 4 : 802a5ad0 81657e00 00000000 00000000 $ 8 : 00000008 801461c8 00000000 80570050 $12 : 819b0280 819b04b0 00000006 00000000 $16 : 802a5a60 80000000 80b46000 80321010 $20 : 00000000 00000004 802a5ad0 00000001 $24 : 00000000 802257a8 $28 : 802a4000 802a59e8 00000004 801d4e7c Hi : 0000000b Lo : 00506320 epc : 802224dc ip_conntrack_help+0x38/0x74 Tainted: P ra : 801d4e7c nf_iterate+0xbc/0x130 Status: 1000f403 KERNEL EXL IE Cause : 00800008 BadVA : c00a6828 PrId : 00019374 Modules linked in: ip_nat_pptp ip_conntrack_pptp ath_pktlog wlan_acl wlan_wep wlan_tkip wlan_ccmp wlan_xauth ath_pci ath_dev ath_dfs ath_rate_atheros wlan ath_hal ip_nat_tftp ip_conntrack_tftp ip_nat_ftp ip_conntrack_ftp pppoe ppp_async ppp_deflate ppp_mppe pppox ppp_generic slhc Process swapper (pid: 0, threadinfo=802a4000, task=802a6000) Stack : 801e7d98 00000004 802a5a60 80000000 801d4e7c 801d4e7c 802a5ad0 00000004 00000000 00000000 801e7d98 00000000 00000004 802a5ad0 00000000 00000010 801e7d98 80b46000 802a5a60 80320000 80000000 801d4f8c 802a5b00 00000002 80063834 00000000 80b46000 802a5a60 801e7d98 80000000 802ba854 00000000 81a02180 80b7e260 81a021b0 819b0000 819b0000 80570056 00000000 00000001 ... Call Trace: [<801e7d98>] ip_finish_output+0x0/0x23c [<801d4e7c>] nf_iterate+0xbc/0x130 [<801d4e7c>] nf_iterate+0xbc/0x130 [<801e7d98>] ip_finish_output+0x0/0x23c [<801e7d98>] ip_finish_output+0x0/0x23c [<801d4f8c>] nf_hook_slow+0x9c/0x1a4 One way to fix this would be to split helper cleanup from the unregistration function and invoke it for the H.245 helper, but since ctnetlink needs to be able to find the helper for synchonization purposes, a better fix is to register it normally and make sure its not assigned to connections during helper lookup. The missing l3num initialization is enough for this, this patch changes it to use AF_UNSPEC to make it more explicit though. Reported-by: liannan <liannan@twsz.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17netfilter: nf_conntrack_h323: fix memory leak in module initialization error ↵Patrick McHardy
path Properly free h323_buffer when helper registration fails. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17netfilter: nf_nat: fix RCU racesPatrick McHardy
Fix three ct_extend/NAT extension related races: - When cleaning up the extension area and removing it from the bysource hash, the nat->ct pointer must not be set to NULL since it may still be used in a RCU read side - When replacing a NAT extension area in the bysource hash, the nat->ct pointer must be assigned before performing the replacement - When reallocating extension storage in ct_extend, the old memory must not be freed immediately since it may still be used by a RCU read side Possibly fixes https://bugzilla.redhat.com/show_bug.cgi?id=449315 and/or http://bugzilla.kernel.org/show_bug.cgi?id=10875 Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>