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2008-01-28[IPV4]: Unify access to the routing tables.Denis V. Lunev1-17/+12
Replace the direct pointers to local and main tables with calls to fib_get_table() with appropriate argument. This doesn't introduce additional dereferences, but makes the access to fib tables uniform in any (CONFIG_IP_MULTIPLE_TABLES) case. Acked-by: Benjamin Thery <[email protected]> Acked-by: Daniel Lezcano <[email protected]> Signed-off-by: Denis V. Lunev <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2008-01-28[NETNS]: Refactor fib initialization so it can handle multiple namespaces.Denis V. Lunev1-8/+80
This patch makes the fib to be initialized as a subsystem for the network namespaces. The code does not handle several namespaces yet, so in case of a creation of a network namespace, the creation/initialization will not occur. Acked-by: Benjamin Thery <[email protected]> Acked-by: Daniel Lezcano <[email protected]> Signed-off-by: Denis V. Lunev <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2008-01-28[IPV4]: Check fib4_rules_init failure.Denis V. Lunev1-3/+15
This adds error paths into both versions of fib4_rules_init (with/without CONFIG_IP_MULTIPLE_TABLES) and returns error code to the caller. Acked-by: Benjamin Thery <[email protected]> Acked-by: Daniel Lezcano <[email protected]> Signed-off-by: Denis V. Lunev <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2008-01-28[IPV4] net/ipv4: Use ipv4_is_<type>Joe Perches1-3/+3
Signed-off-by: Joe Perches <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2008-01-28[IPV4]: Add inet_dev_addr_type()Laszlo Attila Toth1-2/+19
Address type search can be limited to an interface by inet_dev_addr_type function. Signed-off-by: Laszlo Attila Toth <[email protected]> Signed-off-by: Patrick McHardy <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2008-01-28[NET]: Modify all rtnetlink methods to only work in the initial namespace (v2)Denis V. Lunev1-0/+12
Before I can enable rtnetlink to work in all network namespaces I need to be certain that something won't break. So this patch deliberately disables all of the rtnletlink methods in everything except the initial network namespace. After the methods have been audited this extra check can be disabled. Changes from v1: - added IPv6 addrlabel protection Signed-off-by: Denis V. Lunev <[email protected]> Signed-off-by: Eric W. Biederman <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
2007-12-21[IPV4]: OOPS with NETLINK_FIB_LOOKUP netlink socketDenis V. Lunev1-3/+6
[ Regression added by changeset: cd40b7d3983c708aabe3d3008ec64ffce56d33b0 [NET]: make netlink user -> kernel interface synchronious -DaveM ] nl_fib_input re-reuses incoming skb to send the reply. This means that this packet will be freed twice, namely in: - netlink_unicast_kernel - on receive path Use clone to send as a cure, the caller is responsible for kfree_skb on error. Thanks to Alexey Dobryan, who originally found the problem. Signed-off-by: Denis V. Lunev <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-11-07[IPV4]: Compact some ifdefs in the fib code.Pavel Emelyanov1-7/+8
There are places that check for CONFIG_IP_MULTIPLE_TABLES twice in the same file, but the internals of these #ifdefs can be merged. As a side effect - remove one ifdef from inside a function. Signed-off-by: Pavel Emelyanov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-10-23[IPV4]: Explicitly call fib_get_table() in fib_frontend.cPavel Emelyanov1-5/+7
In case the "multiple tables" config option is y, the ip_fib_local_table is not a variable, but a macro, that calls fib_get_table(RT_TABLE_LOCAL). Some code uses this "variable" *3* times in one place, thus implicitly making 3 calls. Fix it. Signed-off-by: Pavel Emelyanov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-10-10[NETLINK]: fib_frontend build fixesDavid S. Miller1-11/+5
1) fibnl needs to be declared outside of config ifdefs, and also should not be explicitly initialized to NULL 2) nl_fib_input() args are wrong for netlink_kernel_create() input method Signed-off-by: David S. Miller <[email protected]>
2007-10-10[NET]: make netlink user -> kernel interface synchroniousDenis V. Lunev1-3/+6
This patch make processing netlink user -> kernel messages synchronious. This change was inspired by the talk with Alexey Kuznetsov about current netlink messages processing. He says that he was badly wrong when introduced asynchronious user -> kernel communication. The call netlink_unicast is the only path to send message to the kernel netlink socket. But, unfortunately, it is also used to send data to the user. Before this change the user message has been attached to the socket queue and sk->sk_data_ready was called. The process has been blocked until all pending messages were processed. The bad thing is that this processing may occur in the arbitrary process context. This patch changes nlk->data_ready callback to get 1 skb and force packet processing right in the netlink_unicast. Kernel -> user path in netlink_unicast remains untouched. EINTR processing for in netlink_run_queue was changed. It forces rtnl_lock drop, but the process remains in the cycle until the message will be fully processed. So, there is no need to use this kludges now. Signed-off-by: Denis V. Lunev <[email protected]> Acked-by: Alexey Kuznetsov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-10-10[NETLINK]: Introduce nested and byteorder flag to netlink attributeThomas Graf1-1/+1
This change allows the generic attribute interface to be used within the netfilter subsystem where this flag was initially introduced. The byte-order flag is yet unused, it's intended use is to allow automatic byte order convertions for all atomic types. Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-10-10[NET]: Make the device list and device lookups per namespace.Eric W. Biederman1-1/+1
This patch makes most of the generic device layer network namespace safe. This patch makes dev_base_head a network namespace variable, and then it picks up a few associated variables. The functions: dev_getbyhwaddr dev_getfirsthwbytype dev_get_by_flags dev_get_by_name __dev_get_by_name dev_get_by_index __dev_get_by_index dev_ioctl dev_ethtool dev_load wireless_process_ioctl were modified to take a network namespace argument, and deal with it. vlan_ioctl_set and brioctl_set were modified so their hooks will receive a network namespace argument. So basically anthing in the core of the network stack that was affected to by the change of dev_base was modified to handle multiple network namespaces. The rest of the network stack was simply modified to explicitly use &init_net the initial network namespace. This can be fixed when those components of the network stack are modified to handle multiple network namespaces. For now the ifindex generator is left global. Fundametally ifindex numbers are per namespace, or else we will have corner case problems with migration when we get that far. At the same time there are assumptions in the network stack that the ifindex of a network device won't change. Making the ifindex number global seems a good compromise until the network stack can cope with ifindex changes when you change namespaces, and the like. Signed-off-by: Eric W. Biederman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-10-10[NET]: Support multiple network namespaces with netlinkEric W. Biederman1-2/+2
Each netlink socket will live in exactly one network namespace, this includes the controlling kernel sockets. This patch updates all of the existing netlink protocols to only support the initial network namespace. Request by clients in other namespaces will get -ECONREFUSED. As they would if the kernel did not have the support for that netlink protocol compiled in. As each netlink protocol is updated to be multiple network namespace safe it can register multiple kernel sockets to acquire a presence in the rest of the network namespaces. The implementation in af_netlink is a simple filter implementation at hash table insertion and hash table look up time. Signed-off-by: Eric W. Biederman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-10-10[NET]: Make device event notification network namespace safeEric W. Biederman1-0/+3
Every user of the network device notifiers is either a protocol stack or a pseudo device. If a protocol stack that does not have support for multiple network namespaces receives an event for a device that is not in the initial network namespace it quite possibly can get confused and do the wrong thing. To avoid problems until all of the protocol stacks are converted this patch modifies all netdev event handlers to ignore events on devices that are not in the initial network namespace. As the rest of the code is made network namespace aware these checks can be removed. Signed-off-by: Eric W. Biederman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-07-19[NET] IPV4: Fix whitespace errors.YOSHIFUJI Hideaki1-1/+1
Signed-off-by: YOSHIFUJI Hideaki <[email protected]>
2007-07-10[IPV4]: The scheduled removal of multipath cached routing support.David S. Miller1-4/+0
With help from Chris Wedgwood. Signed-off-by: David S. Miller <[email protected]>
2007-06-07[NETLINK]: Mark netlink policies constPatrick McHardy1-1/+1
Signed-off-by: Patrick McHardy <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-05-31[IPV4]: Kill references to bogus non-existent CONFIG_IP_NOSIOCRTDavid S. Miller1-11/+0
Signed-off-by: David S. Miller <[email protected]>
2007-04-27[IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res)Sergey Vlasov1-0/+4
When CONFIG_IP_MULTIPLE_TABLES is enabled, the code in nl_fib_lookup() needs to initialize the res.r field before fib_res_put(&res) - unlike fib_lookup(), a direct call to ->tb_lookup does not set this field. Signed-off-by: Sergey Vlasov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-04-25[NETLINK]: Switch cb_lock spinlock to mutex and allow to override itPatrick McHardy1-1/+2
Switch cb_lock to mutex and allow netlink kernel users to override it with a subsystem specific mutex for consistent locking in dump callbacks. All netlink_dump_start users have been audited not to rely on any side-effects of the previously used spinlock. Signed-off-by: Patrick McHardy <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-04-25[IPv4]: Use rtnl registration interfaceThomas Graf1-4/+8
Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-04-25[NETLINK]: Introduce nlmsg_hdr() helperArnaldo Carvalho de Melo1-1/+1
For the common "(struct nlmsghdr *)skb->data" sequence, so that we reduce the number of direct accesses to skb->data and for consistency with all the other cast skb member helpers. Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-04-25[NETLINK]: Infinite recursion in netlink.Alexey Kuznetsov1-1/+7
Reply to NETLINK_FIB_LOOKUP messages were misrouted back to kernel, which resulted in infinite recursion and stack overflow. The bug is present in all kernel versions since the feature appeared. The patch also makes some minimal cleanup: 1. Return something consistent (-ENOENT) when fib table is missing 2. Do not crash when queue is empty (does not happen, but yet) 3. Put result of lookup Signed-off-by: Alexey Kuznetsov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-03-25[IPv4] fib: Fix out of bound access of fib_props[]Thomas Graf1-0/+5
Fixes a typo which caused fib_props[] to have the wrong size and makes sure the value used to index the array which is provided by userspace via netlink is checked to avoid out of bound access. Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-02-14[PATCH] remove many unneeded #includes of sched.hTim Schmielau1-1/+0
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <[email protected]> Acked-by: Russell King <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-02-10[NET] IPV4: Fix whitespace errors.YOSHIFUJI Hideaki1-11/+11
Signed-off-by: YOSHIFUJI Hideaki <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-12-02[NETLINK]: Remove unused dst_pid field in netlink_skb_parmsThomas Graf1-1/+0
The destination PID is passed directly to netlink_unicast() respectively netlink_multicast(). Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-12-02[IPV4] nl_fib_lookup: Rename fl_fwmark to fl_markThomas Graf1-1/+1
For the sake of consistency. Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-12-02[NET]: Rethink mark field in struct flowiThomas Graf1-2/+2
Now that all protocols have been made aware of the mark field it can be moved out of the union thus simplyfing its usage. The config options in the IPv4/IPv6/DECnet subsystems to enable respectively disable mark based routing only obfuscate the code with ifdefs, the cost for the additional comparison in the flow key is insignificant, and most distributions have all these options enabled by default anyway. Therefore it makes sense to remove the config options and enable mark based routing by default. Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-10-18[IPv4] fib: Remove unused fib_config membersThomas Graf1-5/+0
Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-28[IPV4]: net/ipv4/fib annotationsAl Viro1-4/+3
Signed-off-by: Al Viro <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-28[IPV4]: inet_addr_type() annotationsAl Viro1-1/+1
argument and inferred net-endian variables in callers annotated. Signed-off-by: Al Viro <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-28[IPV4]: annotate inetdev.h helpersAl Viro1-1/+1
inet_confirm_addr(), inet_ifa_byprefix(), ip_dev_find(), inet_make_mask() and inet_ifa_match() annotated, along with inferred net-endian variables Signed-off-by: Al Viro <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-28[IPV4]: annotate struct in_ifaddrAl Viro1-6/+6
ifa_local, ifa_address, ifa_mask, ifa_broadcast and ifa_anycast are net-endian. Annotated them and variables that are inferred to be net-endian. Signed-off-by: Al Viro <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-28[IPV4]: struct fib_config IPv4 address fields annotatedAl Viro1-1/+1
Signed-off-by: Al Viro <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-28[IPV4]: RTA_{DST,SRC,GATEWAY,PREFSRC} annotatedAl Viro1-4/+4
these are passed net-endian; use be32 netlink accessors Signed-off-by: Al Viro <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-28[IPV4]: fib_validate_source() annotationsAl Viro1-2/+2
annotated arguments and inferred net-endian variables in callers Signed-off-by: Al Viro <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[NETLINK]: Make use of NLA_STRING/NLA_NUL_STRING attribute validationThomas Graf1-1/+1
Converts existing NLA_STRING attributes to use the new validation features, saving a couple of temporary buffers. Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[IPv4]: Convert route get to new netlink apiThomas Graf1-1/+1
Fixes various unvalidated netlink attributes causing memory corruptions when left empty by userspace applications. Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[IPv4]: Convert FIB dumping to use new netlink apiThomas Graf1-2/+2
Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[IPv4]: FIB configuration using struct fib_configThomas Graf1-70/+294
Introduces struct fib_config replacing the ugly struct kern_rta prone to ordering issues. Avoids creating faked netlink messages for auto generated routes or requests via ioctl. A new interface net/nexthop.h is added to help navigate through nexthop configuration arrays. A new struct nl_info will be used to carry the necessary netlink information to be used for notifications later on. Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[IPV4]: Increase number of possible routing tables to 2^32Patrick McHardy1-34/+68
Increase the number of possible routing tables to 2^32 by replacing the fixed sized array of pointers by a hash table and replacing iterations over all possible table IDs by hash table walking. Signed-off-by: Patrick McHardy <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[NET]: Introduce RTA_TABLE/FRA_TABLE attributesPatrick McHardy1-3/+4
Introduce RTA_TABLE route attribute and FRA_TABLE routing rule attribute to hold 32 bit routing table IDs. Usespace compatibility is provided by continuing to accept and send the rtm_table field, but because of its limited size it can only carry the low 8 bits of the table ID. This implies that if larger IDs are used, _all_ userspace programs using them need to use RTA_TABLE. Signed-off-by: Patrick McHardy <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[NET]: Use u32 for routing table IDsPatrick McHardy1-4/+4
Use u32 for routing table IDs in net/ipv4 and net/decnet in preparation of support for a larger number of routing tables. net/ipv6 already uses u32 everywhere and needs no further changes. No functional changes are made by this patch. Signed-off-by: Patrick McHardy <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[IPv4]: Move interface address bits to linux/if_addr.hThomas Graf1-0/+1
Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-09-22[IPV4]: Use Protocol Independant Policy Routing Rules FrameworkThomas Graf1-1/+1
Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0
Signed-off-by: Jörn Engel <[email protected]> Signed-off-by: Adrian Bunk <[email protected]>
2006-06-17[NET]: Export ip_dev_find()Sean Hefty1-0/+1
Export ip_dev_find() to allow locating a net_device given an IP address. Signed-off-by: Sean Hefty <[email protected]> Signed-off-by: Roland Dreier <[email protected]>
2006-04-14[IPV4]: Possible cleanups.Adrian Bunk1-1/+0
This patch contains the following possible cleanups: - make the following needlessly global function static: - arp.c: arp_rcv() - remove the following unused EXPORT_SYMBOL's: - devinet.c: devinet_ioctl - fib_frontend.c: ip_rt_ioctl - inet_hashtables.c: inet_bind_bucket_create - inet_hashtables.c: inet_bind_hash - tcp_input.c: sysctl_tcp_abc - tcp_ipv4.c: sysctl_tcp_tw_reuse - tcp_output.c: sysctl_tcp_mtu_probing - tcp_output.c: sysctl_tcp_base_mss Signed-off-by: Adrian Bunk <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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