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2010-06-24cfg80211/mac80211: Update set_tx_power to use mBm instead of dBm unitsJuuso Oikarinen
In preparation for a TX power setting interface in the nl80211, change the .set_tx_power function to use mBm units instead of dBm for greater accuracy and smaller power levels. Also, already in advance move the tx_power_setting enumeration to nl80211. This change affects the .tx_set_power function prototype. As a result, the corresponding changes are needed to modules using it. These are mac80211, iwmc3200wifi and rndis_wlan. Cc: Samuel Ortiz <samuel.ortiz@intel.com> Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Acked-by: Samuel Ortiz <samuel.ortiz@intel.com> Acked-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-23Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/ipv4/ip_output.c
2010-06-23net - IP_NODEFRAG option for IPv4 socketJiri Olsa
this patch is implementing IP_NODEFRAG option for IPv4 socket. The reason is, there's no other way to send out the packet with user customized header of the reassembly part. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-23Input: evdev - use driver hint to compute size of event bufferHenrik Rydberg
Some devices, in particular MT devices, produce a lot of data. This may lead to overflowing of the event queues in evdev driver, which by default are fairly small. Let the drivers hint the average number of events per packet generated by the device, and use that information when computing the buffer size evdev should use for the device. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Acked-by: Chase Douglas <chase.douglas@canonical.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-06-23net: Introduce u64_stats_sync infrastructureEric Dumazet
To properly implement 64bits network statistics on 32bit or 64bit hosts, we provide one new type and four methods, to ease conversions. Stats producer should use following template granted it already got an exclusive access to counters (include/linux/u64_stats_sync.h contains some documentation about details) u64_stats_update_begin(&stats->syncp); stats->bytes64 += len; stats->packets64++; u64_stats_update_end(&stats->syncp); While a consumer should use following template to get consistent snapshot : u64 tbytes, tpackets; unsigned int start; do { start = u64_stats_fetch_begin(&stats->syncp); tbytes = stats->bytes64; tpackets = stats->packets64; } while (u64_stats_fetch_retry(&stats->lock, syncp)); Suggested by David Miller, and comments courtesy of Nick Piggin. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-23net: Fix a typo in netlink.hJustin P. Mattock
Fix a typo in include/net/netlink.h should be finalize instead of finanlize Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-23snmp: fix SNMP_ADD_STATS()Eric Dumazet
commit aa2ea0586d9d (tcp: fix outsegs stat for TSO segments) incorrectly assumed SNMP_ADD_STATS() was used from BH context. Fix this using mib[!in_softirq()] instead of mib[0] Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-23ALSA: usb-audio: move and add some commentsDaniel Mack
Also add a list of open topics. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-06-23ALSA: usb-audio: unify UAC macros and struct namesDaniel Mack
Get rid of the last occurances of _v1 suffixes, and move the version number right after the "uac" string. Now things are consitent again. Sorry for the forth and back, but it just looks much nicer this way. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-06-23Merge branch 'fix/misc' into topic/miscTakashi Iwai
2010-06-22NFSv41: Clean up exclusive createTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Clean up the NFSv4.1 minor version specific operationsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22IPVS: one-packet schedulingNick Chalk
Allow one-packet scheduling for UDP connections. When the fwmark-based or normal virtual service is marked with '-o' or '--ops' options all connections are created only to schedule one packet. Useful to schedule UDP packets from same client port to different real servers. Recommended with RR or WRR schedulers (the connections are not visible with ipvsadm -L). Signed-off-by: Nick Chalk <nick@loadbalancer.org> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-06-21mac80211: Add interface for driver to temporarily disable dynamic psJuuso Oikarinen
This mechanism introduced in this patch applies (at least) for hardware designs using a single shared antenna for both WLAN and BT. In these designs, the antenna must be toggled between WLAN and BT. In those hardware, managing WLAN co-existence with Bluetooth requires WLAN full power save whenever there is Bluetooth activity in order for WLAN to be able to periodically relinquish the antenna to be used for BT. This is because BT can only access the shared antenna when WLAN is idle or asleep. Some hardware, for instance the wl1271, are able to indicate to the host whenever there is BT traffic. In essence, the hardware will send an indication to the host whenever there is, for example, SCO traffic or A2DP traffic, and will send another indication when the traffic is over. The hardware gets information of Bluetooth traffic via hardware co-existence control lines - these lines are used to negotiate the shared antenna ownership. The hardware will give the antenna to BT whenever WLAN is sleeping. This patch adds the interface to mac80211 to facilitate temporarily disabling of dynamic power save as per request of the WLAN driver. This interface will immediately force WLAN to full powersave, hence allowing BT coexistence as described above. In these kind of shared antenna desings, when WLAN powersave is fully disabled, Bluetooth will not work simultaneously with WLAN at all. This patch does not address that problem. This interface will not change PSM state, so if PSM is disabled it will remain so. Solving this problem requires knowledge about BT state, and is best done in user-space. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-21tracing: Fix undeclared ENOSYS in include/linux/tracepoint.hWu Zhangjin
The header file include/linux/tracepoint.h may be included without include/linux/errno.h and then the compiler will fail on building for undelcared ENOSYS. This patch fixes this problem via including <linux/errno.h> to include/linux/tracepoint.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> LKML-Reference: <1277118549-622-1-git-send-email-wuzhangjin@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2010-06-20caif: Add debug connection type for CAIF.Sjur Braendeland
Added new CAIF protocol type CAIFPROTO_DEBUG for accessing CAIF debug on the ST Ericsson modems. There are two debug servers on the modem, one for radio related debug (CAIF_RADIO_DEBUG_SERVICE) and the other for communication/application related debug (CAIF_COM_DEBUG_SERVICE). The debug connection can contain trace debug printouts or interactive debug used for debugging and test. Debug connections can be of type STREAM or SEQPACKET. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-20caif: Use link layer MTU instead of fixed MTUSjur Braendeland
Previously CAIF supported maximum transfer size of ~4050. The transfer size is now calculated dynamically based on the link layers mtu size. Signed-off-by: Sjur Braendeland@stericsson.com Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-20caif: Bugfix - RFM must support segmentation.Sjur Braendeland
CAIF Remote File Manager may send or receive more than 4050 bytes. Due to this The CAIF RFM service have to support segmentation. Signed-off-by: Sjur Braendeland@stericsson.com Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-20caif: Bugfix not all services uses flow-ctrl.Sjur Braendeland
Flow control is not used by all CAIF services. The usage of flow control is now part of the gerneal initialization function for CAIF Services. Signed-off-by: Sjur Braendeland@stericsson.com Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-20firewire: cdev: extend fw_cdev_event_iso_interrupt documentationStefan Richter
Add information regarding the 2.6.32 update to the xmit variant of fw_cdev_event_iso_interrupt. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-06-20firewire: cdev: fix ABI for FCP and address range mapping, add ↵Stefan Richter
fw_cdev_event_request2 The problem: A target-like userspace driver, e.g. AV/C target or SBP-2/3 target, needs to be able to act as responder and requester. In the latter role, it needs to send requests to nods from which it received requests. This is currently impossible because fw_cdev_event_request lacks information about sender node ID. Reported-by: Jay Fenlason <fenlason@redhat.com> Libffado + libraw1394 + firewire-core is currently unable to drive two or more audio devices on the same bus. Reported-by: Arnold Krille <arnold@arnoldarts.de> This is because libffado requires destination node ID of FCP requests and sender node ID of FCP responses to match. It even prohibits libffado from working with a bus on which libraw1394 opens a /dev/fw* as default ioctl device that does not correspond with the audio device. This is because libraw1394 does not receive the sender node ID from the kernel. Moreover, fw_cdev_event_request makes it impossible to tell unicast and broadcast write requests apart. The fix: Add a replacement of struct fw_cdev_event_request request, boringly called struct fw_cdev_event_request2. The new event will be sent to a userspace client instead of the old one if the client claims compatibility with <linux/firewire-cdev.h> ABI version 4 or later. libraw1394 needs to be extended to make use of the new event, in order to properly support libffado and other FCP or address range mapping users who require correct sender node IDs. Further notes: While we are at it, change back the range of possible values of fw_cdev_event_request.tcode to 0x0...0xb like in ABI version <= 3. The preceding change "firewire: expose extended tcode of incoming lock requests to (userspace) drivers" expanded it to 0x0...0x17 which could catch sloppily coded clients by surprise. The extended range of codes is only used in the new fw_cdev_event_request2.tcode. Jay and I also suggested an alternative approach to fix the ABI for incoming requests: Add an FW_CDEV_IOC_GET_REQUEST_INFO ioctl which can be called after reception of an fw_cdev_event_request, before issuing of the closing FW_CDEV_IOC_SEND_RESPONSE ioctl. The new ioctl would reveal the vital information about a request that fw_cdev_event_request lacks. Jay showed an implementation of this approach. The former event approach adds 27 LOC of rather trivial code to core-cdev.c, the ioctl approach 34 LOC, some of which is nontrivial. The ioctl approach would certainly also add more LOC to userspace programs which require the expanded information on inbound requests. This approach is probably only on the lighter-weight side in case of clients that want to be compatible with kernels that lack the new capability, like libraw1394. However, the code to be added to such libraw1394-like clients in case of the event approach is a straight- forward additional switch () case in its event handler. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-06-20firewire: cdev: freeze FW_CDEV_VERSION due to libraw1394 bugStefan Richter
libraw1394 v2.0.0...v2.0.5 takes FW_CDEV_VERSION from an externally installed header file and uses it to declare its own implementation level in FW_CDEV_IOC_GET_INFO. This is wrong; it should set the real version for which it was actually written. If we add features to the kernel ABI that require the kernel to check a client's implementation level, we can not trust the client version if it was set from FW_CDEV_VERSION. Hence freeze FW_CDEV_VERSION at the current value (no damage has been done yet), clearly document FW_CDEV_VERSION as a dummy version and what clients are expected to do with fw_cdev_get_info.version, and use a new defined constant (which is not placed into the exported header file) as kernel implementation level. Note, in order to check in client program source code which features are present in an externally installed linux/firewire-cdev.h, use preprocessor directives like #ifdef FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE or #ifdef FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED instead of a check of FW_CDEV_VERSION. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-06-20firewire: remove an unused function argumentStefan Richter
void (*fw_address_callback_t)(..., int speed, ...) is the speed that a remote node chose to transmit a request to us. In case of split transactions, firewire-core will transmit the response at that speed. Upper layer drivers on the other hand (firewire-net, -sbp2, firedtv, and userspace drivers) cannot do anything useful with that speed datum, except log it for debug purposes. But data that is merely potentially (not even actually) used for debug purposes does not belong into the API. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-06-19firewire: normalize STATE_CLEAR/SET CSR access interfaceStefan Richter
Push the maintenance of STATE_CLEAR/SET.abdicate down into the card driver. This way, the read/write_csr_reg driver method works uniformly across all CSR offsets. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-06-19firewire: replace get_features card driver hookStefan Richter
by feature variables in the fw_card struct. The hook appeared to be an unnecessary abstraction in the card driver interface. Cleaner would be to pass those feature flags as arguments to fw_card_initialize() or fw_card_add(), but the FairnessControl register is in the SCLK domain and may therefore not be accessible while Link Power Status is off, i.e. before the card->driver->enable call from fw_card_add(). Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-06-18Merge commit 'v2.6.35-rc3' into perf/coreIngo Molnar
Merge reason: Go from -rc1 base to -rc3 base, merge in fixes.
2010-06-18Merge commit 'v2.6.35-rc3' into sched/coreIngo Molnar
Merge reason: Update to the latest -rc.
2010-06-17Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
2010-06-17netfilter: nf_nat: support user-specified SNAT rules in LOCAL_INPatrick McHardy
2.6.34 introduced 'conntrack zones' to deal with cases where packets from multiple identical networks are handled by conntrack/NAT. Packets are looped through veth devices, during which they are NATed to private addresses, after which they can continue normally through the stack and possibly have NAT rules applied a second time. This works well, but is needlessly complicated for cases where only a single SNAT/DNAT mapping needs to be applied to these packets. In that case, all that needs to be done is to assign each network to a seperate zone and perform NAT as usual. However this doesn't work for packets destined for the machine performing NAT itself since its corrently not possible to configure SNAT mappings for the LOCAL_IN chain. This patch adds a new INPUT chain to the NAT table and changes the targets performing SNAT to be usable in that chain. Example usage with two identical networks (192.168.0.0/24) on eth0/eth1: iptables -t raw -A PREROUTING -i eth0 -j CT --zone 1 iptables -t raw -A PREROUTING -i eth0 -j MARK --set-mark 1 iptables -t raw -A PREROUTING -i eth1 -j CT --zone 2 iptabels -t raw -A PREROUTING -i eth1 -j MARK --set-mark 2 iptables -t nat -A INPUT -m mark --mark 1 -j NETMAP --to 10.0.0.0/24 iptables -t nat -A POSTROUTING -m mark --mark 1 -j NETMAP --to 10.0.0.0/24 iptables -t nat -A INPUT -m mark --mark 2 -j NETMAP --to 10.0.1.0/24 iptables -t nat -A POSTROUTING -m mark --mark 2 -j NETMAP --to 10.0.1.0/24 iptables -t raw -A PREROUTING -d 10.0.0.0/24 -j CT --zone 1 iptables -t raw -A OUTPUT -d 10.0.0.0/24 -j CT --zone 1 iptables -t raw -A PREROUTING -d 10.0.1.0/24 -j CT --zone 2 iptables -t raw -A OUTPUT -d 10.0.1.0/24 -j CT --zone 2 iptables -t nat -A PREROUTING -d 10.0.0.0/24 -j NETMAP --to 192.168.0.0/24 iptables -t nat -A OUTPUT -d 10.0.0.0/24 -j NETMAP --to 192.168.0.0/24 iptables -t nat -A PREROUTING -d 10.0.1.0/24 -j NETMAP --to 192.168.0.0/24 iptables -t nat -A OUTPUT -d 10.0.1.0/24 -j NETMAP --to 192.168.0.0/24 Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-06-16udp: Add UFO to NETIF_F_SOFTWARE_GSOHerbert Xu
This patch adds UFO to the list of GSO features with a software fallback. This allows UFO to be used even if the hardware does not support it. In particular, this allows us to test the UFO fallback, as it has been reported to not work in some cases. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16af_unix: Allow credentials to work across user and pid namespaces.Eric W. Biederman
In unix_skb_parms store pointers to struct pid and struct cred instead of raw uid, gid, and pid values, then translate the credentials on reception into values that are meaningful in the receiving processes namespaces. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16scm: Capture the full credentials of the scm sender.Eric W. Biederman
Start capturing not only the userspace pid, uid and gid values of the sending process but also the struct pid and struct cred of the sending process as well. This is in preparation for properly supporting SCM_CREDENTIALS for sockets that have different uid and/or pid namespaces at the different ends. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Serge E. Hallyn <serge@hallyn.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16af_unix: Allow SO_PEERCRED to work across namespaces.Eric W. Biederman
Use struct pid and struct cred to store the peer credentials on struct sock. This gives enough information to convert the peer credential information to a value relative to whatever namespace the socket is in at the time. This removes nasty surprises when using SO_PEERCRED on socket connetions where the processes on either side are in different pid and user namespaces. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Daniel Lezcano <daniel.lezcano@free.fr> Acked-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16sock: Introduce cred_to_ucredEric W. Biederman
To keep the coming code clear and to allow both the sock code and the scm code to share the logic introduce a fuction to translate from struct cred to struct ucred. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16user_ns: Introduce user_nsmap_uid and user_ns_map_gid.Eric W. Biederman
Define what happens when a we view a uid from one user_namespace in another user_namepece. - If the user namespaces are the same no mapping is necessary. - For most cases of difference use overflowuid and overflowgid, the uid and gid currently used for 16bit apis when we have a 32bit uid that does fit in 16bits. Effectively the situation is the same, we want to return a uid or gid that is not assigned to any user. - For the case when we happen to be mapping the uid or gid of the creator of the target user namespace use uid 0 and gid as confusing that user with root is not a problem. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Serge E. Hallyn <serue@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16scm: Reorder scm_cookie.Eric W. Biederman
Reorder the fields in scm_cookie so they pack better on 64bit. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16syncookies: check decoded options against sysctl settingsFlorian Westphal
Discard the ACK if we find options that do not match current sysctl settings. Previously it was possible to create a connection with sack, wscale, etc. enabled even if the feature was disabled via sysctl. Also remove an unneeded call to tcp_sack_reset() in cookie_check_timestamp: Both call sites (cookie_v4_check, cookie_v6_check) zero "struct tcp_options_received", hand it to tcp_parse_options() (which does not change tcp_opt->num_sacks/dsack) and then call cookie_check_timestamp(). Even if num_sacks/dsacks were changed, the structure is allocated on the stack and after cookie_check_timestamp returns only a few selected members are copied to the inet_request_sock. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16inetpeer: restore small inet_peer structuresEric Dumazet
Addition of rcu_head to struct inet_peer added 16bytes on 64bit arches. Thats a bit unfortunate, since old size was exactly 64 bytes. This can be solved, using an union between this rcu_head an four fields, that are normally used only when a refcount is taken on inet_peer. rcu_head is used only when refcnt=-1, right before structure freeing. Add a inet_peer_refcheck() function to check this assertion for a while. We can bring back SLAB_HWCACHE_ALIGN qualifier in kmem cache creation. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-16Merge branch 'master' into for-nextJiri Kosina
2010-06-16fix typos concerning "management"Uwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-06-16fix typos concerning "acquire"Uwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-06-15netpoll: Use correct primitives for RCU dereferencingHerbert Xu
Now that RCU debugging checks for matching rcu_dereference calls and rcu_read_lock, we need to use the correct primitives or face nasty warnings. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15net: NET_SKB_PAD should depend on L1_CACHE_BYTESEric Dumazet
In old kernels, NET_SKB_PAD was defined to 16. Then commit d6301d3dd1c2 (net: Increase default NET_SKB_PAD to 32), and commit 18e8c134f4e9 (net: Increase NET_SKB_PAD to 64 bytes) increased it to 64. While first patch was governed by network stack needs, second was more driven by performance issues on current hardware. Real intent was to align data on a cache line boundary. So use max(32, L1_CACHE_BYTES) instead of 64, to be more generic. Remove microblaze and powerpc own NET_SKB_PAD definitions. Thanks to Alexander Duyck and David Miller for their comments. Suggested-by: David Miller <davem@davemloft.net> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15net: Fix error in comment on net_device_ops::ndo_get_statsBen Hutchings
ndo_get_stats still returns struct net_device_stats *; there is no struct net_device_stats64. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15inetpeer: RCU conversionEric Dumazet
inetpeer currently uses an AVL tree protected by an rwlock. It's possible to make most lookups use RCU 1) Add a struct rcu_head to struct inet_peer 2) add a lookup_rcu_bh() helper to perform lockless and opportunistic lookup. This is a normal function, not a macro like lookup(). 3) Add a limit to number of links followed by lookup_rcu_bh(). This is needed in case we fall in a loop. 4) add an smp_wmb() in link_to_pool() right before node insert. 5) make unlink_from_pool() use atomic_cmpxchg() to make sure it can take last reference to an inet_peer, since lockless readers could increase refcount, even while we hold peers.lock. 6) Delay struct inet_peer freeing after rcu grace period so that lookup_rcu_bh() cannot crash. 7) inet_getpeer() first attempts lockless lookup. Note this lookup can fail even if target is in AVL tree, but a concurrent writer can let tree in a non correct form. If this attemps fails, lock is taken a regular lookup is performed again. 8) convert peers.lock from rwlock to a spinlock 9) Remove SLAB_HWCACHE_ALIGN when peer_cachep is created, because rcu_head adds 16 bytes on 64bit arches, doubling effective size (64 -> 128 bytes) In a future patch, this is probably possible to revert this part, if rcu field is put in an union to share space with rid, ip_id_count, tcp_ts & tcp_ts_stamp. These fields being manipulated only with refcnt > 0. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2010-06-15mac80211: Fix ps-qos network latency handlingJuuso Oikarinen
The ps-qos latency handling is broken. It uses predetermined latency values to select specific dynamic PS timeouts. With common AP configurations, these values overlap with beacon interval and are therefore essentially useless (for network latencies less than the beacon interval, PSM is disabled.) This patch remedies the problem by replacing the predetermined network latency values with one high value (1900ms) which is used to go trigger full psm. For backwards compatibility, the value 2000ms is still mapped to a dynamic ps timeout of 100ms. Currently also the mac80211 internal value for storing user space configured dynamic PSM values is incorrectly in the driver visible ieee80211_conf struct. Move it to the ieee80211_local struct. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-15tcp: unify tcp flag macrosChangli Gao
unify tcp flag macros: TCPHDR_FIN, TCPHDR_SYN, TCPHDR_RST, TCPHDR_PSH, TCPHDR_ACK, TCPHDR_URG, TCPHDR_ECE and TCPHDR_CWR. TCBCB_FLAG_* are replaced with the corresponding TCPHDR_*. Signed-off-by: Changli Gao <xiaosuo@gmail.com> ---- include/net/tcp.h | 24 ++++++------- net/ipv4/tcp.c | 8 ++-- net/ipv4/tcp_input.c | 2 - net/ipv4/tcp_output.c | 59 ++++++++++++++++----------------- net/netfilter/nf_conntrack_proto_tcp.c | 32 ++++++----------- net/netfilter/xt_TCPMSS.c | 4 -- 6 files changed, 58 insertions(+), 71 deletions(-) Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15bridge: use rx_handler_data pointer to store net_bridge_port pointerJiri Pirko
Register net_bridge_port pointer as rx_handler data pointer. As br_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a bridge port. Also rcuized pointers are now correctly dereferenced in br_fdb.c and in netfilter parts. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15macvlan: use rx_handler_data pointer to store macvlan_port pointer V2Jiri Pirko
Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>