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2008-05-21mac80211: use multi-queue master netdeviceJohannes Berg
This patch updates mac80211 and drivers to be multi-queue aware and use that instead of the internal queue mapping. Also does a number of cleanups in various pieces of the code that fall out and reduces internal mac80211 state size. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-21mac80211: dont allow fragmentation and requeuing on A-MPDU queuesJohannes Berg
There really is no reason for a driver to reject a frame on an A-MPDU queue when it can stop that queue for any period of time and is given frames one by one. Hence, disallow it with a big warning and reduce mac80211-internal state. Also add a warning when we try to fragment a frame destined for an A-MPDU queue and drop it, the actual bug needs to be fixed elsewhere but I'm not exactly sure how to yet. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-21mac80211: move TX info into skb->cbJohannes Berg
This patch converts mac80211 and all drivers to have transmit information and status in skb->cb rather than allocating extra memory for it and copying all the data around. To make it fit, a union is used where only data that is necessary for all steps is kept outside of the union. A number of fixes were done by Ivo, as well as the rt2x00 part of this patch. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-21mac80211: use rate index in TX controlJohannes Berg
This patch modifies struct ieee80211_tx_control to give band info and the rate index (instead of rate pointers) to drivers. This mostly serves to reduce the TX control structure size to make it fit into skb->cb so that the fragmentation code can put it there and we can think about passing it to drivers that way in the future. The rt2x00 driver update was done by Ivo, thanks. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-21mac80211: let drivers wake but not start queuesJohannes Berg
Having drivers start queues is just confusing, their ->start() callback can block and do whatever is necessary, so let mac80211 start queues and have drivers wake queues when necessary (to get packets flowing again right away.) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-15Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
2008-05-15Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/iwlwifi/iwl-4965-rs.c drivers/net/wireless/rt2x00/rt61pci.c
2008-05-149p: fix error path during early mountEric Van Hensbergen
There was some cleanup issues during early mount which would trigger a kernel bug for certain types of failure. This patch reorganizes the cleanup to get rid of the bad behavior. This also merges the 9pnet and 9pnet_fd modules for the purpose of configuration and initialization. Keeping the fd transport separate from the core 9pnet code seemed like a good idea at the time, but in practice has caused more harm and confusion than good. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-05-149p: Documentation updatesEric Van Hensbergen
The kernel-doc comments of much of the 9p system have been in disarray since reorganization. This patch fixes those problems, adds additional documentation and a template book which collects the 9p information. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-05-14mac80211: use hardware flags for signal/noise unitsBruno Randolf
trying to clean up the signal/noise code. the previous code in mac80211 had confusing names for the related variables, did not have much definition of what units of signal and noise were provided and used implicit mechanisms from the wireless extensions. this patch introduces hardware capability flags to let the hardware specify clearly if it can provide signal and noise level values and which units it can provide. this also anticipates possible new units like RCPI in the future. for signal: IEEE80211_HW_SIGNAL_UNSPEC - unspecified, unknown, hw specific IEEE80211_HW_SIGNAL_DB - dB difference to unspecified reference point IEEE80211_HW_SIGNAL_DBM - dBm, difference to 1mW for noise we currently only have dBm: IEEE80211_HW_NOISE_DBM - dBm, difference to 1mW if IEEE80211_HW_SIGNAL_UNSPEC or IEEE80211_HW_SIGNAL_DB is used the driver has to provide the maximum value (max_signal) it reports in order for applications to make sense of the signal values. i tried my best to find out for each driver what it can provide and update it but i'm not sure (?) for some of them and used the more conservative guess in doubt. this can be fixed easily after this patch has been merged by changing the hardware flags of the driver. DRIVER SIGNAL MAX NOISE QUAL ----------------------------------------------------------------- adm8211 unspec(?) 100 n/a missing at76_usb unspec(?) (?) unused missing ath5k dBm dBm percent rssi b43legacy dBm dBm percent jssi(?) b43 dBm dBm percent jssi(?) iwl-3945 dBm dBm percent snr+more iwl-4965 dBm dBm percent snr+more p54 unspec 127 n/a missing rt2x00 dBm n/a percent rssi+tx/rx frame success rt2400 dBm n/a rt2500pci dBm n/a rt2500usb dBm n/a rt61pci dBm n/a rt73usb dBm n/a rtl8180 unspec(?) 65 n/a (?) rtl8187 unspec(?) 65 (?) noise(?) zd1211 dB(?) 100 n/a percent drivers/net/wireless/ath5k/base.c: Changes-licensed-under: 3-Clause-BSD Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-13irda: Fix a misalign access issue. (v2)Graf Yang
Replace u16ho with put/get_unaligned functions Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-12tipc: Fix race condition when creating socket or native portAllan Stephens
This patch eliminates the (very remote) chance of a crash resulting from a partially initialized socket or native port unexpectedly receiving a message. Now, during the creation of a socket or native port, the underlying generic port's lock is not released until all initialization required to handle incoming messages has been done. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-12syncppp: Fix crashes.David S. Miller
The syncppp layer wants a mid-level netdev private pointer. It was using netdev->priv but that only worked by accident, and thus this scheme was broken when the device private allocation strategy changed. Add a proper mid-layer private pointer for uses like this, update syncppp and all users, and remove the HDLC_PPP broken tag from drivers/net/wan/Kconfig Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-09sctp: add sctp/remaddr table to complete RFC remote address table OIDNeil Horman
Add support for RFC3873 remote address table OID. +--(5) sctpAssocRemAddrTable | | | |--(-) sctpAssocId (shared index) | | | +--(1) sctpAssocRemAddrType (index) . | . +--(2) sctpAssocRemAddr (index) . | +--(3) sctpAssocRemAddrActive | +--(4) sctpAssocRemAddrHBActive | +--(5) sctpAssocRemAddrRTO | +--(6) sctpAssocRemAddrMaxPathRtx | +--(7) sctpAssocRemAddrRtx | +--(8) sctpAssocRemAddrStartTime This patch places all the requsite data in /proc/net/sctp/remaddr. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-09sctp: Support the new specification of sctp_connectx()Vlad Yasevich
The specification of sctp_connectx() has been changed to return an association id. We've added a new socket option that will return the association id as the return value from the setsockopt() call. The library that implements sctp_connectx() interface will implement both socket options. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-09sctp: Bring SCTP_DELAYED_ACK socket option into API complianceWei Yongjun
Brings delayed_ack socket option set/get into line with the latest ietf socket extensions API draft, while maintaining backwards compatibility. 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>
2008-05-07mac80211: QoS related cleanupsJohannes Berg
This * makes the queue number passed to drivers a u16 (as it will be with skb_get_queue_mapping) * removes the useless queue number defines * splits hw->queues into hw->queues/ampdu_queues * removes the debugfs files for per-queue counters * removes some dead QoS code * removes the beacon queue configuration for IBSS so that the drivers now never get a queue number bigger than (hw->queues + hw->ampdu_queues - 1) for tx and only in the range 0..hw->queues-1 for conf_tx. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07mac80211: remove queue info from ieee80211_tx_statusJohannes Berg
The queue info in struct ieee80211_tx_status is never used. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07mac80211: clean up get_tx_stats callbackJohannes Berg
The callback takes a ieee80211_tx_queue_stats with a contained array of ieee80211_tx_queue_stats_data, remove the former, rename the latter to ieee80211_tx_queue_stats and make tx_stats() take the array directly. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07remove ieee80211_wx_{get,set}_auth()Adrian Bunk
After the bcm43xx removal ieee80211_wx_{get,set}_auth() were no longer used. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07remove ieee80211_tx_frame()Adrian Bunk
After the softmac removal ieee80211_tx_frame() was no longer used. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07mac80211: Add IEEE80211_KEY_FLAG_PAIRWISEIvo van Doorn
This adds a new flag to the ieee80211_key_conf structure. This flag will inform the driver the key is pairwise rather then a shared key. This is important for drivers who support both types of keys, and need to be informed which type of key this is. Alternative would be drivers checking the address argument of set_key(), but it will be safer when mac80211 is more explicit. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07mac80211: Replace ieee80211_tx_control->key_idx with ieee80211_key_confIvo van Doorn
The hw_key_idx inside the ieee80211_key_conf structure does not provide all the information drivers might need to perform hardware encryption. This is in particular true for rt2x00 who needs to know the key algorithm and whether it is a shared or pairwise key. By passing the ieee80211_key_conf pointer it assures us that drivers can make full use of all information that it should know about a particular key. Additionally this patch updates all drivers to grab the hw_key_idx from the ieee80211_key_conf structure. v2: Removed bogus u16 cast v3: Add warning about ieee80211_tx_control pointers v4: Update warning about ieee80211_tx_control pointers Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-04ip: Make use of the inline function dst_metric_locked()Satoru SATOH
Signed-off-by: Satoru SATOH <satoru.satoh@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-03xfrm: convert empty xfrm_audit_* macros to functionsMarcin Slusarz
it removes these warnings when CONFIG_AUDITSYSCALL is unset: net/xfrm/xfrm_user.c: In function 'xfrm_add_sa': net/xfrm/xfrm_user.c:412: warning: unused variable 'sid' net/xfrm/xfrm_user.c:411: warning: unused variable 'sessionid' net/xfrm/xfrm_user.c:410: warning: unused variable 'loginuid' net/xfrm/xfrm_user.c: In function 'xfrm_del_sa': net/xfrm/xfrm_user.c:485: warning: unused variable 'sid' net/xfrm/xfrm_user.c:484: warning: unused variable 'sessionid' net/xfrm/xfrm_user.c:483: warning: unused variable 'loginuid' net/xfrm/xfrm_user.c: In function 'xfrm_add_policy': net/xfrm/xfrm_user.c:1132: warning: unused variable 'sid' net/xfrm/xfrm_user.c:1131: warning: unused variable 'sessionid' net/xfrm/xfrm_user.c:1130: warning: unused variable 'loginuid' net/xfrm/xfrm_user.c: In function 'xfrm_get_policy': net/xfrm/xfrm_user.c:1382: warning: unused variable 'sid' net/xfrm/xfrm_user.c:1381: warning: unused variable 'sessionid' net/xfrm/xfrm_user.c:1380: warning: unused variable 'loginuid' net/xfrm/xfrm_user.c: In function 'xfrm_add_pol_expire': net/xfrm/xfrm_user.c:1620: warning: unused variable 'sid' net/xfrm/xfrm_user.c:1619: warning: unused variable 'sessionid' net/xfrm/xfrm_user.c:1618: warning: unused variable 'loginuid' net/xfrm/xfrm_user.c: In function 'xfrm_add_sa_expire': net/xfrm/xfrm_user.c:1658: warning: unused variable 'sid' net/xfrm/xfrm_user.c:1657: warning: unused variable 'sessionid' net/xfrm/xfrm_user.c:1656: warning: unused variable 'loginuid' Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-30Merge 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: (53 commits) tcp: Overflow bug in Vegas [IPv4] UFO: prevent generation of chained skb destined to UFO device iwlwifi: move the selects to the tristate drivers ipv4: annotate a few functions __init in ipconfig.c atm: ambassador: vcc_sf semaphore to mutex MAINTAINERS: The socketcan-core list is subscribers-only. netfilter: nf_conntrack: padding breaks conntrack hash on ARM ipv4: Update MTU to all related cache entries in ip_rt_frag_needed() sch_sfq: use del_timer_sync() in sfq_destroy() net: Add compat support for getsockopt (MCAST_MSFILTER) net: Several cleanups for the setsockopt compat support. ipvs: fix oops in backup for fwmark conn templates bridge: kernel panic when unloading bridge module bridge: fix error handling in br_add_if() netfilter: {nfnetlink,ip,ip6}_queue: fix skb_over_panic when enlarging packets netfilter: x_tables: fix net namespace leak when reading /proc/net/xxx_tables_names netfilter: xt_TCPOPTSTRIP: signed tcphoff for ipv6_skip_exthdr() retval tcp: Limit cwnd growth when deferring for GSO tcp: Allow send-limited cwnd to grow up to max_burst when gso disabled [netdrvr] gianfar: Determine TBIPA value dynamically ...
2008-04-29Merge branch 'audit.b50' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b50' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] new predicate - AUDIT_FILETYPE [patch 2/2] Use find_task_by_vpid in audit code [patch 1/2] audit: let userspace fully control TTY input auditing [PATCH 2/2] audit: fix sparse shadowed variable warnings [PATCH 1/2] audit: move extern declarations to audit.h Audit: MAINTAINERS update Audit: increase the maximum length of the key field Audit: standardize string audit interfaces Audit: stop deadlock from signals under load Audit: save audit_backlog_limit audit messages in case auditd comes back Audit: collect sessionid in netlink messages Audit: end printk with newline
2008-04-29netfilter: nf_conntrack: padding breaks conntrack hash on ARMPhilip Craig
commit 0794935e "[NETFILTER]: nf_conntrack: optimize hash_conntrack()" results in ARM platforms hashing uninitialised padding. This padding doesn't exist on other architectures. Fix this by replacing NF_CT_TUPLE_U_BLANK() with memset() to ensure everything is initialised. There were only 4 bytes that NF_CT_TUPLE_U_BLANK() wasn't clearing anyway (or 12 bytes on ARM). Signed-off-by: Philip Craig <philipc@snapgear.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-29ipv4: Update MTU to all related cache entries in ip_rt_frag_needed()Timo Teras
Add struct net_device parameter to ip_rt_frag_needed() and update MTU to cache entries where ifindex is specified. This is similar to what is already done in ip_rt_redirect(). Signed-off-by: Timo Teras <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-29net: Add compat support for getsockopt (MCAST_MSFILTER)David L Stevens
This patch adds support for getsockopt for MCAST_MSFILTER for both IPv4 and IPv6. It depends on the previous setsockopt patch, and uses the same method. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-29ipvs: fix oops in backup for fwmark conn templatesJulian Anastasov
Fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=10556 where conn templates with protocol=IPPROTO_IP can oops backup box. Result from ip_vs_proto_get() should be checked because protocol value can be invalid or unsupported in backup. But for valid message we should not fail for templates which use IPPROTO_IP. Also, add checks to validate message limits and connection state. Show state NONE for templates using IPPROTO_IP. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-28Merge 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: iwlwifi: Allow building iwl3945 without iwl4965. wireless: Fix compile error with wifi & leds tcp: Fix slab corruption with ipv6 and tcp6fuzz ipv4/ipv6 compat: Fix SSM applications on 64bit kernels. [IPSEC]: Use digest_null directly for auth sunrpc: fix missing kernel-doc can: Fix copy_from_user() results interpretation Revert "ipv6: Fix typo in net/ipv6/Kconfig" tipc: endianness annotations ipv6: result of csum_fold() is already 16bit, no need to cast [XFRM] AUDIT: Fix flowlabel text format ambibuity.
2008-04-28Audit: collect sessionid in netlink messagesEric Paris
Previously I added sessionid output to all audit messages where it was available but we still didn't know the sessionid of the sender of netlink messages. This patch adds that information to netlink messages so we can audit who sent netlink messages. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-04-27ipv4/ipv6 compat: Fix SSM applications on 64bit kernels.David L Stevens
Add support on 64-bit kernels for seting 32-bit compatible MCAST* socket options. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-23IPv6 support for NFS server export cachesAurélien Charbon
This adds IPv6 support to the interfaces that are used to express nfsd exports. All addressed are stored internally as IPv6; backwards compatibility is maintained using mapped addresses. Thanks to Bruce Fields, Brian Haley, Neil Brown and Hideaki Joshifuji for comments Signed-off-by: Aurelien Charbon <aurelien.charbon@bull.net> Cc: Neil Brown <neilb@suse.de> Cc: Brian Haley <brian.haley@hp.com> Cc: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-04-22[IPSEC]: Fix catch-22 with algorithm IDs above 31Herbert Xu
As it stands it's impossible to use any authentication algorithms with an ID above 31 portably. It just happens to work on x86 but fails miserably on ppc64. The reason is that we're using a bit mask to check the algorithm ID but the mask is only 32 bits wide. After looking at how this is used in the field, I have concluded that in the long term we should phase out state matching by IDs because this is made superfluous by the reqid feature. For current applications, the best solution IMHO is to allow all algorithms when the bit masks are all ~0. The following patch does exactly that. This bug was identified by IBM when testing on the ppc64 platform using the NULL authentication algorithm which has an ID of 251. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-17[INET]: Uninline the __inet_inherit_port call.Pavel Emelyanov
This deblats ~200 bytes when ipv6 and dccp are 'y'. Besides, this will ease compilation issues for patches I'm working on to make inet hash tables more scalable wrt net namespaces. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-17[INET]: Drop the inet_inherit_port() call.Pavel Emelyanov
As I can see from the code, two places (tcp_v6_syn_recv_sock and dccp_v6_request_recv_sock) that call this one already run with BHs disabled, so it's safe to call __inet_inherit_port there. Besides (in case I missed smth with code review) the calltrace tcp_v6_syn_recv_sock `- tcp_v4_syn_recv_sock `- __inet_inherit_port and the similar for DCCP are valid, but assumes BHs to be disabled. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-16mac80211: no BSS changes to driver from beacons processed during scanningReinette Chatre
There is no need to send BSS changes to driver from beacons processed during scanning. We are more interested in beacons from an AP with which we are associated - these will still be used to send updates to driver as the beacons are received without scanning. This change·removes the requirement that bss_info_changed needs to be atomic. The beacons received during scanning are processed from a tasklet, but if we do not call bss_info_changed for these beacons there is no need for it to be atomic. This function (bss_info_changed) is called either from workqueue or ioctl in all other instances. Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-04-16[TCP]: Increase the max_burst threshold from 3 to tp->reordering.John Heffner
This change is necessary to allow cwnd to grow during persistent reordering. Cwnd moderation is applied when in the disorder state and an ack that fills the hole comes in. If the hole was greater than 3 packets, but less than tp->reordering, cwnd will shrink when it should not have. Signed-off-by: John Heffner <jheffner@napa.(none)> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-16[NETNS]: Add netns refcnt debug to fib rules.Denis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-16[NETNS]: Add netns refcnt debug for kernel sockets.Denis V. Lunev
Protocol control sockets and netlink kernel sockets should not prevent the namespace stop request. They are initialized and disposed in a special way by sk_change_net/sk_release_kernel. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-16[NETNS]: Make netns refconting debug like a socket one.Denis V. Lunev
Make release_net/hold_net noop for performance-hungry people. This is a debug staff and should be used in the debug mode only. Add check for net != NULL in hold/release calls. This will be required later on. [ Added minor simplifications suggested by Brian Haley. -DaveM ] Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-16[RTNL]: Introduce the rtnl_kill_links helper.Pavel Emelyanov
This one is responsible for calling ->dellink on each net device found in net to help with vlan net_exit hook in the nearest future. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15[NETNS]: The generic per-net pointers.Pavel Emelyanov
Add the elastic array of void * pointer to the struct net. The access rules are simple: 1. register the ops with register_pernet_gen_device to get the id of your private pointer 2. call net_assign_generic() to put the private data on the struct net (most preferably this should be done in the ->init callback of the ops registered) 3. do not store any private reference on the net_generic array; 4. do not change this pointer while the net is alive; 5. use the net_generic() to get the pointer. When adding a new pointer, I copy the old array, replace it with a new one and schedule the old for kfree after an RCU grace period. Since the net_generic explores the net->gen array inside rcu read section and once set the net->gen->ptr[x] pointer never changes, this grants us a safe access to generic pointers. Quoting Paul: "... RCU is protecting -only- the net_generic structure that net_generic() is traversing, and the [pointer] returned by net_generic() is protected by a reference counter in the upper-level struct net." Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15[NETNS]: The net-subsys IDs generator.Pavel Emelyanov
To make some per-net generic pointers, we need some way to address them, i.e. - IDs. This is simple IDA-based IDs generator for pernet subsystems. Addressing questions about potential checkpoint/restart problems: these IDs are "lite-offsets" within the net structure and are by no means supposed to be exported to the userspace. Since it will be used in the nearest future by devices only (tun, vlan, tunnels, bridge, etc), I make it resemble the functionality of register_pernet_device(). The new ids is stored in the *id pointer _before_ calling the init callback to make this id available in this callback. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15[IRDA]: Remove irlan_eth_send_gratuitous_arp()Adrian Bunk
Even kernel 2.2.26 (sic) already contains the #undef CONFIG_IRLAN_SEND_GRATUITOUS_ARP with the comment "but for some reason the machine crashes if you use DHCP". Either someone finally looks into this or it's simply time to remove this dead code. Reported-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15[TIPC]: Overhaul of socket locking logicAllan Stephens
This patch modifies TIPC's socket code to follow the same approach used by other protocols. This change eliminates the need for a mutex in the TIPC-specific portion of the socket protocol data structure -- in its place, the standard Linux socket backlog queue and associated locking routines are utilized. These changes fix a long-standing receive queue bug on SMP systems, and also enable individual read and write threads to utilize a socket without unnecessarily interfering with each other. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-14Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6.26
2008-04-14Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/ehea/ehea_main.c drivers/net/wireless/iwlwifi/Kconfig drivers/net/wireless/rt2x00/rt61pci.c net/ipv4/inet_timewait_sock.c net/ipv6/raw.c net/mac80211/ieee80211_sta.c