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* [TCP]: Increase the max_burst threshold from 3 to tp->reordering.John Heffner2008-04-16
| | | | | | | | | | | 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>
* [NETNS]: Add netns refcnt debug for network devices.Denis V. Lunev2008-04-16
| | | | | | | | | | dev_set_net is called for - just allocated devices - devices moving from one namespace to another release_net has proper check inside to distinguish these cases. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS]: Add netns refcnt debug to fib rules.Denis V. Lunev2008-04-16
| | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS]: Add netns refcnt debug for kernel sockets.Denis V. Lunev2008-04-16
| | | | | | | | | 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>
* [NETNS]: Make netns refconting debug like a socket one.Denis V. Lunev2008-04-16
| | | | | | | | | | | | | 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>
* [VLAN]: Tag vlan_group_device with net device, not ifindex.Pavel Emelyanov2008-04-16
| | | | | | | | | | | | | | Currently vlan group is searched using one key - the ifindex. We'll have to lookup the vlan_group by two keys - ifindex and net. Turning the vlan_group lookup key to struct net_device pointer will make this process easier. Besides, this will eliminate one more place in the networking, that assumes that indexes are unique in the kernel. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [RTNL]: Introduce the rtnl_kill_links helper.Pavel Emelyanov2008-04-16
| | | | | | | | | | 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>
* [NETNS]: The generic per-net pointers.Pavel Emelyanov2008-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [NETNS]: The net-subsys IDs generator.Pavel Emelyanov2008-04-15
| | | | | | | | | | | | | | | | | | | | 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>
* [ISDN] include/linux/isdn.h: remove dead codeAdrian Bunk2008-04-15
| | | | | | | | This patch remove the usage of a nonexisting kconfig variable. 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>
* [IRDA]: Remove irlan_eth_send_gratuitous_arp()Adrian Bunk2008-04-15
| | | | | | | | | | | | | 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>
* [WANPIPE]: Forgotten bits of Sangoma drivers removal.Adrian Bunk2008-04-15
| | | | | | | | Robert P. J. Day spotted that my removal of the Sangoma drivers missed a few bits. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Overhaul of socket locking logicAllan Stephens2008-04-15
| | | | | | | | | | | | | | 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>
* Merge branch 'master' of ↵David S. Miller2008-04-14
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6.26
| * [NETFILTER]: bridge: add ebt_nflog watcherPeter Warasin2008-04-14
| | | | | | | | | | | | | | | | This patch adds the ebtables nflog watcher to the kernel in order to allow ebtables log through the nfnetlink_log backend. Signed-off-by: Peter Warasin <peter@endian.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_conntrack: replace NF_CT_DUMP_TUPLE macro indrection by ↵Jan Engelhardt2008-04-14
| | | | | | | | | | | | | | | | | | | | function call Directly call IPv4 and IPv6 variants where the address family is easily known. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_nat: use bool type in nf_nat_protoJan Engelhardt2008-04-14
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_tuple.hJan Engelhardt2008-04-14
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l4protoJan Engelhardt2008-04-14
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l3protoJan Engelhardt2008-04-14
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: Remove unused callbacks in nf_conntrack_l3protoJan Engelhardt2008-04-14
| | | | | | | | | | | | | | These functions are never called. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_conntrack: add tuplehash l3num/protonum accessorsPatrick McHardy2008-04-14
| | | | | | | | | | | | | | Add accessors for l3num and protonum and get rid of some overly long expressions. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_nat: kill helper and seq_adjust hooksPatrick McHardy2008-04-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Connection tracking helpers (specifically FTP) need to be called before NAT sequence numbers adjustments are performed to be able to compare them against previously seen ones. We've introduced two new hooks around 2.6.11 to maintain this ordering when NAT modules were changed to get called from conntrack helpers directly. The cost of netfilter hooks is quite high and sequence number adjustments are only rarely needed however. Add a RCU-protected sequence number adjustment function pointer and call it from IPv4 conntrack after calling the helper. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_conntrack_extend: warn on confirmed conntracksPatrick McHardy2008-04-14
| | | | | | | | | | | | | | | | | | New extensions may only be added to unconfirmed conntracks to avoid races when reallocating the storage. Also change NF_CT_ASSERT to use WARN_ON to get backtraces. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_nat: don't add NAT extension for confirmed conntracksPatrick McHardy2008-04-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding extensions to confirmed conntracks is not allowed to avoid races on reallocation. Don't setup NAT for confirmed conntracks in case NAT module is loaded late. The has one side-effect, the connections existing before the NAT module was loaded won't enter the bysource hash. The only case where this actually makes a difference is in case of SNAT to a multirange where the IP before NAT is also part of the range. Since old connections don't enter the bysource hash the first new connection from the IP will have a new address selected. This shouldn't matter at all. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_conntrack: add DCCP protocol supportPatrick McHardy2008-04-14
| | | | | | | | | | | | | | Add DCCP conntrack helper. Thanks to Gerrit Renker <gerrit@erg.abdn.ac.uk> for review and testing. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: Add partial checksum validation helperPatrick McHardy2008-04-14
| | | | | | | | | | | | | | | | | | | | Move the UDP-Lite conntrack checksum validation to a generic helper similar to nf_checksum() and make it fall back to nf_checksum() in case the full packet is to be checksummed and hardware checksums are available. This is to be used by DCCP conntrack, which also needs to verify partial checksums. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_nat: remove unused name from struct nf_nat_protocolPatrick McHardy2008-04-14
| | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_nat: move NAT ctnetlink helpers to nf_nat_proto_commonPatrick McHardy2008-04-14
| | | | | | | | | | | | | | Move to nf_nat_proto_common and rename to nf_nat_proto_... since they're also used by protocols that don't have port numbers. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: nf_nat: add helpers for common NAT protocol operationsPatrick McHardy2008-04-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add generic ->in_range and ->unique_tuple ops to avoid duplicating them again and again for future NAT modules and save a few bytes of text: net/ipv4/netfilter/nf_nat_proto_tcp.c: tcp_in_range | -62 (removed) tcp_unique_tuple | -259 # 271 -> 12, # inlines: 1 -> 0, size inlines: 7 -> 0 2 functions changed, 321 bytes removed net/ipv4/netfilter/nf_nat_proto_udp.c: udp_in_range | -62 (removed) udp_unique_tuple | -259 # 271 -> 12, # inlines: 1 -> 0, size inlines: 7 -> 0 2 functions changed, 321 bytes removed net/ipv4/netfilter/nf_nat_proto_gre.c: gre_in_range | -62 (removed) 1 function changed, 62 bytes removed vmlinux: 5 functions changed, 704 bytes removed Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: remove arpt_(un)register_target indirection macrosJan Engelhardt2008-04-14
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: remove arpt_target indirection macroJan Engelhardt2008-04-14
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: remove arpt_table indirection macroJan Engelhardt2008-04-14
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: annotate {arp,ip,ip6,x}tables with constJan Engelhardt2008-04-14
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: xt_sctp: simplify xt_sctp.hJan Engelhardt2008-04-14
| | | | | | | | | | | | | | | | | | | | | | | | The use of xt_sctp.h flagged up -Wshadow warnings in userspace, which prompted me to look at it and clean it up. Basic operations have been directly replaced by library calls (memcpy, memset is both available in the kernel and userspace, and usually faster than a self-made loop). The is_set and is_clear functions now use a processing time shortcut, too. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * [NETFILTER]: ip_tables: per-netns FILTER/MANGLE/RAW tables for realAlexey Dobriyan2008-04-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 9335f047fe61587ec82ff12fbb1220bcfdd32006 aka "[NETFILTER]: ip_tables: per-netns FILTER, MANGLE, RAW" added per-netns _view_ of iptables rules. They were shown to user, but ignored by filtering code. Now that it's possible to at least ping loopback, per-netns tables can affect filtering decisions. netns is taken in case of PRE_ROUTING, LOCAL_IN -- from in device, POST_ROUTING, LOCAL_OUT -- from out device, FORWARD -- from in device which should be equal to out device's netns. This code is relatively new, so BUG_ON was plugged. Wrappers were added to a) keep code the same from CONFIG_NET_NS=n users (overwhelming majority), b) consolidate code in one place -- similar changes will be done in ipv6 and arp netfilter code. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Patrick McHardy <kaber@trash.net>
* | Merge branch 'master' of ↵David S. Miller2008-04-14
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | 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
| * [IPV6]: Use appropriate sock tclass setting for routing lookup.YOSHIFUJI Hideaki2008-04-14
| | | | | | | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPV6]: IPv6 extension header structures need to be packed.YOSHIFUJI Hideaki2008-04-14
| | | | | | | | | | | | | | | | | | | | | | | | struct ipv6_opt_hdr is the common structure for IPv6 extension headers, and it is common to increment the pointer to get the real content. On the other hand, since the structure consists only of 1-byte next-header field and 1-byte length field, size of that structure depends on architecture; 2 or 4. Add "packed" attribute to get 2. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: make struct tun_struct private to tun.cRusty Russell2008-04-12
| | | | | | | | | | | | | | | | | | There's no reason for this to be in the header, and it just hurts recompile time. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Max Krasnyanskiy <maxk@qualcomm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SCTP]: Fix compiler warning about const qualifiersVlad Yasevich2008-04-12
| | | | | | | | | | | | | | | | | | | | | | Fix 3 warnings about discarding const qualifiers: net/sctp/ulpevent.c:862: warning: passing argument 1 of 'sctp_event2skb' discards qualifiers from pointer target type net/sctp/sm_statefuns.c:4393: warning: passing argument 1 of 'SCTP_ASOC' discards qualifiers from pointer target type net/sctp/socket.c:5874: warning: passing argument 1 of 'cmsg_nxthdr' discards qualifiers from pointer target type Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SCTP]: Fix protocol violation when receiving an error lenght INIT-ACKGui Jianfeng2008-04-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When receiving an error length INIT-ACK during COOKIE-WAIT, a 0-vtag ABORT will be responsed. This action violates the protocol apparently. This patch achieves the following things. 1 If the INIT-ACK contains all the fixed parameters, use init-tag recorded from INIT-ACK as vtag. 2 If the INIT-ACK doesn't contain all the fixed parameters, just reflect its vtag. Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [TCP]: tcp_simple_retransmit can cause S+LIlpo Järvinen2008-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes Bugzilla #10384 tcp_simple_retransmit does L increment without any checking whatsoever for overflowing S+L when Reno is in use. The simplest scenario I can currently think of is rather complex in practice (there might be some more straightforward cases though). Ie., if mss is reduced during mtu probing, it may end up marking everything lost and if some duplicate ACKs arrived prior to that sacked_out will be non-zero as well, leading to S+L > packets_out, tcp_clean_rtx_queue on the next cumulative ACK or tcp_fastretrans_alert on the next duplicate ACK will fix the S counter. More straightforward (but questionable) solution would be to just call tcp_reset_reno_sack() in tcp_simple_retransmit but it would negatively impact the probe's retransmission, ie., the retransmissions would not occur if some duplicate ACKs had arrived. So I had to add reno sacked_out reseting to CA_Loss state when the first cumulative ACK arrives (this stale sacked_out might actually be the explanation for the reports of left_out overflows in kernel prior to 2.6.23 and S+L overflow reports of 2.6.24). However, this alone won't be enough to fix kernel before 2.6.24 because it is building on top of the commit 1b6d427bb7e ([TCP]: Reduce sacked_out with reno when purging write_queue) to keep the sacked_out from overflowing. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Reported-by: Alessandro Suardi <alessandro.suardi@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SKB]: __skb_queue_tail = __skb_insert beforeGerrit Renker2008-04-14
| | | | | | | | | | | | | | | | This expresses __skb_queue_tail() in terms of __skb_insert(), using __skb_insert_before() as auxiliary function. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SKB]: __skb_append = __skb_queue_after Gerrit Renker2008-04-14
| | | | | | | | | | | | | | | | | | This expresses __skb_append in terms of __skb_queue_after, exploiting that __skb_append(old, new, list) = __skb_queue_after(list, old, new). Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SKB]: __skb_queue_after(prev) = __skb_insert(prev, prev->next)Gerrit Renker2008-04-14
| | | | | | | | | | | | | | By reordering, __skb_queue_after() is expressed in terms of __skb_insert(). Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SKB]: __skb_dequeue = skb_peek + __skb_unlinkGerrit Renker2008-04-14
| | | | | | | | | | | | | | | | | | | | | | | | By rearranging the order of declarations, __skb_dequeue() is expressed in terms of * skb_peek() and * __skb_unlink(), thus in effect mirroring the analogue implementation of __skb_dequeue_tail(). Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [IPV6] MROUTE: Do not call ipv6_find_idev() directly.YOSHIFUJI Hideaki2008-04-14
| | | | | | | | | | | | | | | | Since NETDEV_REGISTER notifier chain is responsible for creating inet6_dev{}, we do not need to call ipv6_find_idev() directly here. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETNS][DCCPV6]: Move the dccp_v6_ctl_sk on the struct net.Pavel Emelyanov2008-04-14
| | | | | | | | | | | | | | | | And replace all its usage with init_net's socket. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETNS][DCCPV4]: Move the dccp_v4_ctl_sk on the struct net.Pavel Emelyanov2008-04-14
| | | | | | | | | | | | | | | | And replace all its usage with init_net's socket. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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