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2009-03-24ipv6: Fix conflict resolutions during ipv6 bindingVlad Yasevich
The ipv6 version of bind_conflict code calls ipv6_rcv_saddr_equal() which at times wrongly identified intersections between addresses. It particularly broke down under a few instances and caused erroneous bind conflicts. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-21net/*: use linux/kernel.h swap()Ilpo Järvinen
tcp_sack_swap seems unnecessary so I pushed swap to the caller. Also removed comment that seemed then pointless, and added include when not already there. Compile tested. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-18ipv6: Fix incorrect disable_ipv6 behaviorBrian Haley
Fix the behavior of allowing both sysctl and addrconf_dad_failure() to set the disable_ipv6 parameter without any bad side-effects. If DAD fails and accept_dad > 1, we will still set disable_ipv6=1, but then instead of allowing an RA to add an address then immediately fail DAD, we simply don't allow the address to be added in the first place. This also lets the user set this flag and disable all IPv6 addresses on the interface, or on the entire system. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-05Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/tokenring/tmspci.c drivers/net/ucc_geth_mii.c
2009-03-03netns: fix addrconf_ifdown kernel panicDaniel Lezcano
When a network namespace is destroyed the network interfaces are all unregistered, making addrconf_ifdown called by the netdevice notifier. In the other hand, the addrconf exit method does a loop on the network devices and does addrconf_ifdown on each of them. But the ordering of the netns subsystem is not right because it uses the register_pernet_device instead of register_pernet_subsys. If we handle the loopback as any network device, we can safely use register_pernet_subsys. But if we use register_pernet_subsys, the addrconf exit method will do exactly what was already done with the unregistering of the network devices. So in definitive, this code is pointless. I removed the netns addrconf exit method and moved the code to the addrconf cleanup function. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-03ipv6: Fix sysctl unregistration deadlockStephen Hemminger
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-24netlink: change nlmsg_notify() return value logicPablo Neira Ayuso
This patch changes the return value of nlmsg_notify() as follows: If NETLINK_BROADCAST_ERROR is set by any of the listeners and an error in the delivery happened, return the broadcast error; else if there are no listeners apart from the socket that requested a change with the echo flag, return the result of the unicast notification. Thus, with this patch, the unicast notification is handled in the same way of a broadcast listener that has set the NETLINK_BROADCAST_ERROR socket flag. This patch is useful in case that the caller of nlmsg_notify() wants to know the result of the delivery of a netlink notification (including the broadcast delivery) and take any action in case that the delivery failed. For example, ctnetlink can drop packets if the event delivery failed to provide reliable logging and state-synchronization at the cost of dropping packets. This patch also modifies the rtnetlink code to ignore the return value of rtnl_notify() in all callers. The function rtnl_notify() (before this patch) returned the error of the unicast notification which makes rtnl_set_sk_err() reports errors to all listeners. This is not of any help since the origin of the change (the socket that requested the echoing) notices the ENOBUFS error if the notification fails and should resync itself. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-06ipv6/addrconf: common code locatedIlpo Järvinen
$ codiff net/ipv6/addrconf.o net/ipv6/addrconf.o.new net/ipv6/addrconf.c: addrconf_notify | -267 1 function changed, 267 bytes removed net/ipv6/addrconf.c: add_addr | +86 1 function changed, 86 bytes added net/ipv6/addrconf.o.new: 2 functions changed, 86 bytes added, 267 bytes removed, diff: -181 Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-27ipv6: Make mc_forwarding sysctl read-only.David S. Miller
The kernel manages this value internally, as necessary, as VIFs are added/removed and as multicast routers are registered and deregistered. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19ip: convert to net_device_ops for ioctlStephen Hemminger
Convert to net_device_ops function table pointer for ioctl. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-06Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/ath5k/base.c net/8021q/vlan_core.c
2008-11-05ipv6: fix run pending DAD when interface becomes readyBenjamin Thery
With some net devices types, an IPv6 address configured while the interface was down can stay 'tentative' forever, even after the interface is set up. In some case, pending IPv6 DADs are not executed when the device becomes ready. I observed this while doing some tests with kvm. If I assign an IPv6 address to my interface eth0 (kvm driver rtl8139) when it is still down then the address is flagged tentative (IFA_F_TENTATIVE). Then, I set eth0 up, and to my surprise, the address stays 'tentative', no DAD is executed and the address can't be pinged. I also observed the same behaviour, without kvm, with virtual interfaces types macvlan and veth. Some easy steps to reproduce the issue with macvlan: 1. ip link add link eth0 type macvlan 2. ip -6 addr add 2003::ab32/64 dev macvlan0 3. ip addr show dev macvlan0 ... inet6 2003::ab32/64 scope global tentative ... 4. ip link set macvlan0 up 5. ip addr show dev macvlan0 ... inet6 2003::ab32/64 scope global tentative ... Address is still tentative I think there's a bug in net/ipv6/addrconf.c, addrconf_notify(): addrconf_dad_run() is not always run when the interface is flagged IF_READY. Currently it is only run when receiving NETDEV_CHANGE event. Looks like some (virtual) devices doesn't send this event when becoming up. For both NETDEV_UP and NETDEV_CHANGE events, when the interface becomes ready, run_pending should be set to 1. Patch below. 'run_pending = 1' could be moved below the if/else block but it makes the code less readable. Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-03net: '&' reduxAlexey Dobriyan
I want to compile out proc_* and sysctl_* handlers totally and stub them to NULL depending on config options, however usage of & will prevent this, since taking adress of NULL pointer will break compilation. So, drop & in front of every ->proc_handler and every ->strategy handler, it was never needed in fact. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29net: replace %#p6 format specifier with %pi6Harvey Harrison
gcc warns when using the # modifier with the %p format specifier, so we can't use this to omit the colons when needed, introduces %pi6 instead. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-28net: replace all current users of NIP6_SEQFMT with %#p6Harvey Harrison
The define in kernel.h can be done away with at a later time. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-16sysctl: simplify ->strategyAlexey Dobriyan
name and nlen parameters passed to ->strategy hook are unused, remove them. In general ->strategy hook should know what it's doing, and don't do something tricky for which, say, pointer to original userspace array may be needed (name). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> [ networking bits ] Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: Matt Mackall <mpm@selenic.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-23ipv6: protocol for address routesStephen Hemminger
This fixes a problem spotted with zebra, but not sure if it is necessary a kernel problem. With IPV6 when an address is added to an interface, Zebra creates a duplicate RIB entry, one as a connected route, and other as a kernel route. When an address is added to an interface the RTN_NEWADDR message causes Zebra to create a connected route. In IPV4 when an address is added to an interface a RTN_NEWROUTE message is set to user space with the protocol RTPROT_KERNEL. Zebra ignores these messages, because it already has the connected route. The problem is that route created in IPV6 has route protocol == RTPROT_BOOT. Was this a design decision or a bug? This fixes it. Same patch applies to both net-2.6 and stable. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-14netns: Add network namespace argument to rt6_fill_node() and ↵Brian Haley
ipv6_dev_get_saddr() ipv6_dev_get_saddr() blindly de-references dst_dev to get the network namespace, but some callers might pass NULL. Change callers to pass a namespace pointer instead. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-25net: convert BUG_TRAP to generic WARN_ONIlpo Järvinen
Removes legacy reinvent-the-wheel type thing. The generic machinery integrates much better to automated debugging aids such as kerneloops.org (and others), and is unambiguous due to better naming. Non-intuively BUG_TRAP() is actually equal to WARN_ON() rather than BUG_ON() though some might actually be promoted to BUG_ON() but I left that to future. I could make at least one BUILD_BUG_ON conversion. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-22ipv6: make struct ipv6_devconf staticAdrian Bunk
struct ipv6_devconf can now become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-20ipv6: Fix warning in addrconf code.David Miller
Reported by Linus. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-19ipv6 netns: Make several "global" sysctl variables namespace aware.YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08pkt_sched: Add qdisc_tx_is_noop() helper and use in IPV6.David S. Miller
This indicates if the NOOP scheduler is what is active for TX on a given device. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08netdev: Move rest of qdisc state into struct netdev_queueDavid S. Miller
Now qdisc, qdisc_sleeping, and qdisc_list also live there. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/iwlwifi/iwl-3945.c net/mac80211/mlme.c
2008-07-08ipv6: fix race between ipv6_del_addr and DAD timerAndrey Vagin
Consider the following scenario: ipv6_del_addr(ifp) ipv6_ifa_notify(RTM_DELADDR, ifp) ip6_del_rt(ifp->rt) after returning from the ipv6_ifa_notify and enabling BH-s back, but *before* calling the addrconf_del_timer the ifp->timer fires and: addrconf_dad_timer(ifp) addrconf_dad_completed(ifp) ipv6_ifa_notify(RTM_NEWADDR, ifp) ip6_ins_rt(ifp->rt) then return back to the ipv6_del_addr and: in6_ifa_put(ifp) inet6_ifa_finish_destroy(ifp) dst_release(&ifp->rt->u.dst) After this we have an ifp->rt inserted into fib6 lists, but queued for gc, which in turn can result in oopses in the fib6_run_gc. Maybe some other nasty things, but we caught only the oops in gc so far. The solution is to disarm the ifp->timer before flushing the rt from it. Signed-off-by: Andrey Vagin <avagin@parallels.com> Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-03ipv6 addrconf: add accept_dad sysctl to control DAD operation.YOSHIFUJI Hideaki
- If 0, disable DAD. - If 1, perform DAD (default). - If >1, perform DAD and disable IPv6 operation if DAD for MAC-based link-local address has been failed (RFC4862 5.4.5). We do not follow RFC4862 by default. Refer to the netdev thread entitled "Linux IPv6 DAD not full conform to RFC 4862 ?" http://www.spinics.net/lists/netdev/msg52027.html Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-07-03ipv6: Add disable_ipv6 sysctl to disable IPv6 operaion on specific interface.YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-07-03ipv6: Do not assign non-valid address on interface.YOSHIFUJI Hideaki
Check the type of the address when adding a new one on interface. - the unspecified address (::) is always disallowed (RFC4291 2.5.2) - the loopback address is disallowed unless the interface is (one of) loopback (RFC4291 2.5.3). - multicast addresses are disallowed. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-19net: Disable LRO on devices that are forwardingBen Hutchings
Large Receive Offload (LRO) is only appropriate for packets that are destined for the host, and should be disabled if received packets may be forwarded. It can also confuse the GSO on output. Add dev_disable_lro() function which uses the appropriate ethtool ops to disable LRO if enabled. Add calls to dev_disable_lro() in br_add_if() and functions that enable IPv4 and IPv6 forwarding. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-11Merge branch 'net-next-2.6-misc-20080612a' of ↵David S. Miller
git://git.linux-ipv6.org/gitroot/yoshfuji/linux-2.6-next
2008-06-11net: remove CVS keywordsAdrian Bunk
This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-12ipv6 netns: Address labels per namespaceBenjamin Thery
This pacth makes IPv6 address labels per network namespace. It keeps the global label tables, ip6addrlbl_table, but adds a 'net' member to each ip6addrlbl_entry. This new member is taken into account when matching labels. Changelog ========= * v1: Initial version * v2: * Minize the penalty when network namespaces are not configured: * the 'net' member is added only if CONFIG_NET_NS is defined. This saves space when network namespaces are not configured. * 'net' value is retrieved with the inlined function ip6addrlbl_net() that always return &init_net when CONFIG_NET_NS is not defined. * 'net' member in ip6addrlbl_entry renamed to the less generic 'lbl_net' name (helps code search). Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-12ipv6 addrconf: Introduce addrconf_is_prefix_route() helper.YOSHIFUJI Hideaki
This inline function, for readability, returns if the route is a "prefix" route regardless if it was installed by RA or by hand. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-05[IPV6] ADDRCONF: Allow longer lifetime on 64bit archs.YOSHIFUJI Hideaki
- Allow longer lifetimes (>= 0x7fffffff/HZ) on 64bit archs by using unsigned long. - Shadow this arithmetic overflow workaround by introducing helper functions: addrconf_timeout_fixup() and addrconf_finite_timeout(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-05[IPV6] ADDRCONF: Check range of prefix lengthThomas Graf
As of now, the prefix length is not vaildated when adding or deleting addresses. The value is passed directly into the inet6_ifaddr structure and later passed on to memcmp() as length indicator which relies on the value never to exceed 128 (bits). Due to the missing check, the currently code allows for any 8 bit value to be passed on as prefix length while using the netlink interface, and any 32 bit value while using the ioctl interface. [Use unsigned int instead to generate better code - yoshfuji] Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-05-19ipv6 addrconf: Allow infinite prefix lifetime.YOSHIFUJI Hideaki
We need to handle infinite prefix lifetime specially. With help from original reporter "Bonitch, Joseph" <Joseph.Bonitch@xerox.com>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-19ndisc: Add missing strategies for per-device retrans timer/reachable time ↵YOSHIFUJI Hideaki
settings. Noticed from Al Viro <viro@ftp.linux.org.uk> via David Miller <davem@davemloft.net>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-21[NETNS]: Remove empty ->init callback.Pavel Emelyanov
The netns start-stop engine can happily live with any of init or exit callbacks set to NULL. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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
2008-04-13[IPV6] ADDRCONF: Don't generate temporary address for ip6-ip6 interface.YOSHIFUJI Hideaki
As far as I can remember, I was going to disable privacy extensions on all "tunnel" interfaces. Disable it on ip6-ip6 interface as well. Also, just remove ifdefs for SIT for simplicity. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13[IPV6] ADDRCONF: Ensure disabling multicast RS even if privacy extensions ↵YOSHIFUJI Hideaki
are disabled. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13[IPV6] MROUTE: Do not call ipv6_find_idev() directly.YOSHIFUJI Hideaki
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>
2008-04-12[IPV6]: Use in6addr_any where appropriate.YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-12[IPV6]: Define constants for link-local multicast addresses.YOSHIFUJI Hideaki
- Define link-local all-node / all-router multicast addresses. - Remove ipv6_addr_all_nodes() and ipv6_addr_all_routers(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-12[IPV6]: Make address arguments const.YOSHIFUJI Hideaki
- net/ipv6/addrconf.c: ipv6_get_ifaddr(), ipv6_dev_get_saddr() - net/ipv6/mcast.c: ipv6_sock_mc_join(), ipv6_sock_mc_drop(), inet6_mc_check(), ipv6_dev_mc_inc(), __ipv6_dev_mc_dec(), ipv6_dev_mc_dec(), ipv6_chk_mcast_addr() - net/ipv6/route.c: rt6_lookup(), icmp6_dst_alloc() - net/ipv6/ip6_output.c: ip6_nd_hdr() - net/ipv6/ndisc.c: ndisc_send_ns(), ndisc_send_rs(), ndisc_send_redirect(), ndisc_get_neigh(), __ndisc_send() Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-12[IPV6] ADDRCONF: Uninline ipv6_isatap_eui64().YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-12[IPV6] ADDRCONF: Uninline ipv6_addr_hash().YOSHIFUJI Hideaki
The function is only used in net/ipv6/addrconf.c. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-11[IPV6]: Use ipv6_addr_equal() instead of !ipv6_addr_cmp().YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-08Merge branch 'net-2.6.26-isatap-20080403' of ↵David S. Miller
git://git.linux-ipv6.org/gitroot/yoshfuji/linux-2.6-dev