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2009-11-21tcp: Don't make syn cookies initial setting depend on CONFIG_SYSCTLDavid S. Miller
That's extremely non-intuitive, noticed by William Allen Simpson. And let's make the default be on, it's been suggested by a lot of people so we'll give it a try. Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-20net: rename skb->iif to skb->skb_iifEric Dumazet
To help grep games, rename iif to skb_iif Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18X25: Enable setting of cause and diagnostic fieldsAndrew Hendry
Adds SIOCX25SCAUSEDIAG, allowing X.25 programs to set the cause and diagnostic fields. Normally used to indicate status upon closing connections. Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18netsched: Allow var_sk_bound_if meta to work on all namespacesEric Dumazet
This fix can probably wait 2.6.33, or should use another patch if needed in 2.6.32 (no get_dev_by_index_rcu() before 2.6.33) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/sfc/sfe4001.c drivers/net/wireless/libertas/cmd.c drivers/staging/Kconfig drivers/staging/Makefile drivers/staging/rtl8187se/Kconfig drivers/staging/rtl8192e/Kconfig
2009-11-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits) cxgb3: fix premature page unmap ibm_newemac: Fix EMACx_TRTR[TRT] bit shifts vlan: Fix register_vlan_dev() error path gro: Fix illegal merging of trailer trash sungem: Fix Serdes detection. net: fix mdio section mismatch warning ppp: fix BUG on non-linear SKB (multilink receive) ixgbe: Fixing EEH handler to handle more than one error net: Fix the rollback test in dev_change_name() Revert "isdn: isdn_ppp: Use SKB list facilities instead of home-grown implementation." TI Davinci EMAC : Fix Console Hang when bringing the interface down smsc911x: Fix Console Hang when bringing the interface down. mISDN: fix error return in HFCmulti_init() forcedeth: mac address fix r6040: fix version printing Bluetooth: Fix regression with L2CAP configuration in Basic Mode Bluetooth: Select Basic Mode as default for SOCK_SEQPACKET Bluetooth: Set general bonding security for ACL by default r8169: Fix receive buffer length when MTU is between 1515 and 1536 can: add the missing netlink get_xstats_size callback ...
2009-11-18Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
2009-11-18Phonet: convert devices list to RCURémi Denis-Courmont
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18net: device name allocation cleanupsOctavian Purdila
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18netns: net_identifiers should be read_mostlyEric Dumazet
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18linkwatch: linkwatch_forget_dev() to speedup device dismantleEric Dumazet
Herbert Xu a écrit : > On Tue, Nov 17, 2009 at 04:26:04AM -0800, David Miller wrote: >> Really, the link watch stuff is just due for a redesign. I don't >> think a simple hack is going to cut it this time, sorry Eric :-) > > I have no objections against any redesigns, but since the only > caller of linkwatch_forget_dev runs in process context with the > RTNL, it could also legally emit those events. Thanks guys, here an updated version then, before linkwatch surgery ? In this version, I force the event to be sent synchronously. [PATCH net-next-2.6] linkwatch: linkwatch_forget_dev() to speedup device dismantle time ip link del eth3.103 ; time ip link del eth3.104 ; time ip link del eth3.105 real 0m0.266s user 0m0.000s sys 0m0.001s real 0m0.770s user 0m0.000s sys 0m0.000s real 0m1.022s user 0m0.000s sys 0m0.000s One problem of current schem in vlan dismantle phase is the holding of device done by following chain : vlan_dev_stop() -> netif_carrier_off(dev) -> linkwatch_fire_event(dev) -> dev_hold() ... And __linkwatch_run_queue() runs up to one second later... A generic fix to this problem is to add a linkwatch_forget_dev() method to unlink the device from the list of watched devices. dev->link_watch_next becomes dev->link_watch_list (and use a bit more memory), to be able to unlink device in O(1). After patch : time ip link del eth3.103 ; time ip link del eth3.104 ; time ip link del eth3.105 real 0m0.024s user 0m0.000s sys 0m0.000s real 0m0.032s user 0m0.000s sys 0m0.001s real 0m0.033s user 0m0.000s sys 0m0.000s Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18ipv4: factorize cache clearing for batched unregister operationsOctavian Purdila
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18net: introduce NETDEV_UNREGISTER_PERNETOctavian Purdila
This new event is called once for each unique net namespace in batched unregister operations (with the argument set to a random device from that namespace) and once per device in non-batched unregister operations. It allows us to factorize some device unregister work such as clearing the routing cache. Signed-off-by: Octavian Purdila <opurdila@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17vlan: Precise RX stats accountingEric Dumazet
With multi queue devices, its possible that several cpus call vlan RX routines simultaneously for the same vlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per vlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17net: add dev_txq_stats_fold() helperEric Dumazet
Some drivers ndo_get_stats() method need to perform txqueue stats folding. Move folding from dev_get_stats() to a new dev_txq_stats_fold() function Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17vlan: Fix register_vlan_dev() error pathEric Dumazet
In case register_netdevice() returns an error, and a new vlan_group was allocated and inserted in vlan_group_hash[] we call vlan_group_free() without deleting group from hash table. Future lookups can give infinite loops or crashes. We must delete the vlan_group using RCU safe procedure. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17gro: Fix illegal merging of trailer trashHerbert Xu
When we've merged skb's with page frags, and subsequently receive a trailer skb (< MSS) that is not completely non-linear (this can occur on Intel NICs if the packet size falls below the threshold), GRO ends up producing an illegal GSO skb with a frag_list. This is harmless unless the skb is then forwarded through an interface that requires software GSO, whereupon the GSO code will BUG. This patch detects this case in GRO and avoids merging the trailer skb. Reported-by: Mark Wagner <mwagner@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17act_mirred: optimization.Changli Gao
move checking if eaction is valid in tcf_mirred_init() Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17act_mirred: cleanupChangli Gao
1. don't let go back using goto. 2. don't call skb_act_clone() until it is necessary. 3. one exit of the critical context. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17Phonet: missing rcu_dereference()Rémi Denis-Courmont
Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17netlink: remove subscriptions check on notifierJohannes Berg
The netlink URELEASE notifier doesn't notify for sockets that have been used to receive multicast but it should be called for such sockets as well since they might _also_ be used for sending and not solely for receiving multicast. We will need that for nl80211 (generic netlink sockets) in the future. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/can/Kconfig
2009-11-16mac80211: Do not queue Probe Request frames for station MLMEJouni Malinen
Cooked monitor interfaces cannot currently receive Probe Request frames when the interface is in station mode. However, we do not process Probe Request frames internally in the station MLME, so there is no point in queueing the frame here. Remove Probe Request frames from the queued frame list to allow cooked monitor interfaces to receive these frames. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-16net: Fix the rollback test in dev_change_name()Eric Dumazet
net: Fix the rollback test in dev_change_name() In dev_change_name() an err variable is used for storing the original call_netdevice_notifiers() errno (negative) and testing for a rollback error later, but the test for non-zero is wrong, because the err might have positive value as well - from dev_alloc_name(). It means the rollback for a netdevice with a number > 0 will never happen. (The err test is reordered btw. to make it more readable.) Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-15remove deprecated and not used: print_mac()Marin Mitov
The function print_mac in net/ethernet/eth.c is marked __deprecated and not used. Remove it. Signed-off-by: Marin Mitov <mitov@issp.bas.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-15vlan: Use __vlan_hwaccel_put_tag() in rxEric Dumazet
Commit 05423b241311c9380 (vlan: allow null VLAN ID to be used) forgot to update __vlan_hwaccel_rx() & vlan_gro_common() We need to set VLAN_TAG_PRESENT flag in skb->vlan_tci Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-15net: Optimize hard_start_xmit() return checkingJarek Poplawski
Recent changes in the TX error propagation require additional checking and masking of values returned from hard_start_xmit(), mainly to separate cases where skb was consumed. This aim can be simplified by changing the order of NETDEV_TX and NET_XMIT codes, because the latter are treated similarly to negative (ERRNO) values. After this change much simpler dev_xmit_complete() is also used in sch_direct_xmit(), so it is moved to netdevice.h. Additionally NET_RX definitions in netdevice.h are moved up from between TX codes to avoid confusion while reading the TX comment. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-15net: check the return value of ndo_select_queue()Eric Dumazet
Check the return value of ndo_select_queue(). If the value isn't smaller than the real_num_tx_queues, print a warning message, and reset it to zero. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> ---- Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-15Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-2.6
2009-11-16Bluetooth: Fix regression with L2CAP configuration in Basic ModeGustavo F. Padovan
Basic Mode is the default mode of operation of a L2CAP entity. In this case the RFC (Retransmission and Flow Control) configuration option should not be used at all. Normally remote L2CAP implementation should just ignore this option, but it can cause various side effects with other Bluetooth stacks that are not capable of handling unknown options. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-11-16Bluetooth: Select Basic Mode as default for SOCK_SEQPACKETGustavo F. Padovan
The default mode for SOCK_SEQPACKET is Basic Mode. So when no mode has been specified, Basic Mode shall be used. This is important for current application to keep working as expected and not cause a regression. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-11-16Bluetooth: Set general bonding security for ACL by defaultAndrei Emeltchenko
This patch fixes double pairing issues with Secure Simple Paring support. It was observed that when pairing with SSP enabled, that the confirmation will be asked twice. http://www.spinics.net/lists/linux-bluetooth/msg02473.html This also causes bug when initiating SSP connection from Windows Vista. The reason is because bluetoothd does not store link keys since HCIGETAUTHINFO returns 0. Setting default to general bonding fixes these issues. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-11-14Merge branch 'for-next' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/lowpan/lowpan
2009-11-13Phonet: convert routing table to RCURémi Denis-Courmont
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13Phonet: put protocols array under RCURémi Denis-Courmont
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13iucv: add work_queue cleanup for suspendUrsula Braun
If iucv_work_queue is not empty during kernel freeze, a kernel panic occurs. This suspend-patch adds flushing of the work queue for pending connection requests and severing of remaining pending connections. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13inetpeer: Optimize inet_getid()Eric Dumazet
While investigating for network latencies, I found inet_getid() was a contention point for some workloads, as inet_peer_idlock is shared by all inet_getid() users regardless of peers. One way to fix this is to make ip_id_count an atomic_t instead of __u16, and use atomic_add_return(). In order to keep sizeof(struct inet_peer) = 64 on 64bit arches tcp_ts_stamp is also converted to __u32 instead of "unsigned long". Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13ipv6: speedup inet6_dump_addr()Eric Dumazet
When handling large number of netdevices, inet6_dump_addr() is very slow because it has O(N^2) complexity. Instead of scanning one single list, we can use the NETDEV_HASHENTRIES sub lists of the dev_index hash table, and RCU lookups. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13ipv4: speedup inet_dump_ifaddr()Eric Dumazet
Stephen Hemminger a écrit : > On Thu, 12 Nov 2009 15:11:36 +0100 > Eric Dumazet <eric.dumazet@gmail.com> wrote: > >> When handling large number of netdevices, inet_dump_ifaddr() >> is very slow because it has O(N^2) complexity. >> >> Instead of scanning one single list, we can use the NETDEV_HASHENTRIES >> sub lists of the dev_index hash table, and RCU lookups. >> >> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> > > You might be able to make RCU critical section smaller by moving > it into loop. > Indeed. But we dump at most one skb (<= 8192 bytes ?), so rcu_read_lock holding time is small, unless we meet many netdevices without addresses. I wonder if its really common... Thanks [PATCH net-next-2.6] ipv4: speedup inet_dump_ifaddr() When handling large number of netdevices, inet_dump_ifaddr() is very slow because it has O(N2) complexity. Instead of scanning one single list, we can use the NETDEV_HASHENTRIES sub lists of the dev_index hash table, and RCU lookups. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13igmp: Use next_net_device_rcu()Eric Dumazet
We need to use next_det_device_rcu() in RCU protected section. We also can avoid in_dev_get()/in_dev_put() overhead (code size mainly) in rcu_read_lock() sections. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13ipv6: use RCU to walk list of network devicesEric Dumazet
No longer need read_lock(&dev_base_lock), use RCU instead. We also can avoid taking references on inet6_dev structs. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13net: TCP_MSS_DEFAULT, TCP_MSS_DESIREDWilliam Allen Simpson
Define two symbols needed in both kernel and user space. Remove old (somewhat incorrect) kernel variant that wasn't used in most cases. Default should apply to both RMSS and SMSS (RFC2581). Replace numeric constants with defined symbols. Stand-alone patch, originally developed for TCPCT. Signed-off-by: William.Allen.Simpson@gmail.com Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13ipmr: missing dev_put() on error path in vif_add()Dan Carpenter
The other error paths in front of this one have a dev_put() but this one got missed. Found by smatch static checker. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Wang Chen <ellre923@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13sctp: Set socket source address when additing first transportVlad Yasevich
Recent commits sctp: Get rid of an extra routing lookup when adding a transport and sctp: Set source addresses on the association before adding transports changed when routes are added to the sctp transports. As such, we didn't set the socket source address correctly when adding the first transport. The first transport is always the primary/active one, so when adding it, set the socket source address. This was causing regression failures in SCTP tests. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13sctp: Fix regression introduced by new sctp_connectx apiVlad Yasevich
A new (unrealeased to the user) sctp_connectx api c6ba68a26645dbc5029a9faa5687ebe6fcfc53e4 sctp: support non-blocking version of the new sctp_connectx() API introduced a regression cought by the user regression test suite. In particular, the API requires the user library to re-allocate the buffer and could potentially trigger a SIGFAULT. This change corrects that regression by passing the original address buffer to the kernel unmodified, but still allows for a returned association id. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13sctp: Set source addresses on the association before adding transportsVlad Yasevich
Recent commit 8da645e101a8c20c6073efda3c7cc74eec01b87f sctp: Get rid of an extra routing lookup when adding a transport introduced a regression in the connection setup. The behavior was different between IPv4 and IPv6. IPv4 case ended up working because the route lookup routing returned a NULL route, which triggered another route lookup later in the output patch that succeeded. In the IPv6 case, a valid route was returned for first call, but we could not find a valid source address at the time since the source addresses were not set on the association yet. Thus resulted in a hung connection. The solution is to set the source addresses on the association prior to adding peers. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13nl80211: only allow adding stations to running vlan interfacesFelix Fietkau
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-13mac80211: fix broadcast frame handling for 4-addr AP VLANsFelix Fietkau
Without this patch, broadcast frames from the station behind a 4-addr AP VLAN would be reflected back to the source. Fix this by checking the 4-addr flag before bridging multicast frames in the cell. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-13cfg80211: return channel noise via survey APIHolger Schurig
This patch implements the NL80211_CMD_GET_SURVEY command and an get_survey() ops that a driver can implement. The goal of this command is to allow a drivers to report channel survey data (e.g. channel noise, channel occupation). For now, only the mechanism to report back channel noise has been implemented. In future, there will either be a survey-trigger command --- or the existing scan-trigger command will be enhanced. This will allow user-space to request survey for arbitrary channels. Note: any driver that cannot report channel noise should not report any value at all, e.g. made-up -92 dBm. Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-13cfg80211: introduce nl80211_get_ifidx()Holger Schurig
... which get's rid of three indentical cut-n-paste sections. Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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