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* [TCP]: Wrap-safed reordering detection FRTO checkIlpo Järvinen2007-10-10
| | | | | | | | | In case somebody has a suggestion about a better place for this check, which must guarantee execution "early enough" (i.e, before the wrap can occur), I'm very open to them. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Update comment of SACK block validatorIlpo Järvinen2007-10-10
| | | | | | | | | | | | | Just came across what RFC2018 states about generation of valid SACK blocks in case of reneging. Alter comment a bit to point out clearly. IMHO, there isn't any reason to change code because the validation is there for a purpose (counters will inform user about decision TCP made if this case ever surfaces). Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: fix comments that got messed up during code moveIlpo Järvinen2007-10-10
| | | | | Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: No fackets_out/highest_sack tuning when SACK isn't enabledIlpo Järvinen2007-10-10
| | | | | | | | This was found due to bug report from Cedric Le Goater though it turned this turned out to be unrelated bug. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: bridge: remove broken netfilter binary sysctlsJoseph Fannin2007-10-10
| | | | | | | | | | | | | | | | | | | The netfilter sysctls in the bridging code don't set strategy routines: sysctl table check failed: /net/bridge/bridge-nf-call-arptables .3.10.1 Missing strategy sysctl table check failed: /net/bridge/bridge-nf-call-iptables .3.10.2 Missing strategy sysctl table check failed: /net/bridge/bridge-nf-call-ip6tables .3.10.3 Missing strategy sysctl table check failed: /net/bridge/bridge-nf-filter-vlan-tagged .3.10.4 Missing strategy sysctl table check failed: /net/bridge/bridge-nf-filter-pppoe-tagged .3.10.5 Missing strategy These binary sysctls can't work. The binary sysctl numbers of other netfilter sysctls with this problem are being removed. These need to go as well. Signed-off-by: Joseph Fannin <jfannin@gmail.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: x_tables: add xt_time matchJan Engelhardt2007-10-10
| | | | | | | | | | | | | This is ipt_time from POM-ng enhanced by the following: * xtables/ipv6 support * second granularity for daytime * day-of-month support (for example "match on the 15th of each month") * match against UTC or local timezone Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink_log: fix some constantsMichal Miroslaw2007-10-10
| | | | | | | | | Fix timeout (one second is 1 * HZ) and convert max packet copy length to #defined constant. Signed-off-by: Michal Miroslaw <mirq-linux@rere.qmqm.pl> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink_log: fix instance_create() failure pathMichal Miroslaw2007-10-10
| | | | | | | | Fix memory leak on instance_create() while module is being unloaded. Signed-off-by: Michal Miroslaw <mirq-linux@rere.qmqm.pl> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink_log: fix styleMichal Miroslaw2007-10-10
| | | | | | | | Fix function definition style to match other functions in nfnetlink_log.c. Signed-off-by: Michal Miroslaw <mirq-linux@rere.qmqm.pl> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink_log: flush queue earlyMichal Miroslaw2007-10-10
| | | | | | | | | If queue is filled to its threshold, then flush it right away instead of waiting for timer or next packet. Signed-off-by: Michal Miroslaw <mirq-linux@rere.qmqm.pl> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink_log: kill duplicate codeMichal Miroslaw2007-10-10
| | | | | | | | | Kill some cut'n'paste effect. Just after __nfulnl_send() returning, inst->skb is always NULL. Signed-off-by: Michal Miroslaw <mirq-linux@rere.qmqm.pl> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_conntrack_netlink: add support to related connectionsPablo Neira Ayuso2007-10-10
| | | | | | | | | | This patch adds support to relate a connection to an existing master connection. This patch is used by conntrackd to correctly replicate related connections. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_conntrack_expect: kill unique IDPatrick McHardy2007-10-10
| | | | | | | | Similar to the conntrack ID, the per-expectation ID is not needed anymore, kill it. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_conntrack: kill unique IDPatrick McHardy2007-10-10
| | | | | | | | | Remove the per-conntrack ID, its not necessary anymore for dumping. For compatiblity reasons we send the address of the conntrack to userspace as ID. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: ctnetlink: use netlink policyPatrick McHardy2007-10-10
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink_queue: use netlink policyPatrick McHardy2007-10-10
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink_log: use netlink policyPatrick McHardy2007-10-10
| | | | | | | Also remove unused nfula_min array. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink: support attribute policiesPatrick McHardy2007-10-10
| | | | | | | Add support for automatic checking of per-callback attribute policies. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink: use nlmsg_notify()Patrick McHardy2007-10-10
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink: rename functions containing 'nfattr'Patrick McHardy2007-10-10
| | | | | | | There is no struct nfattr anymore, rename functions to 'nlattr'. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink: convert to generic netlink attribute functionsPatrick McHardy2007-10-10
| | | | | | | | | Get rid of the duplicated rtnetlink macros and use the generic netlink attribute functions. The old duplicated stuff is moved to a new header file that exists just for userspace. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nfnetlink: make subsystem and callbacks constPatrick McHardy2007-10-10
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [RFKILL]: Move rfkill_switch_all out of global headerIvo van Doorn2007-10-10
| | | | | | | | | | | rfkill_switch_all shouldn't be called by drivers directly, instead they should send a signal over the input device. To prevent confusion for driver developers, move the function into a rfkill private header. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] mac80211: bss_tim_clear must use ~ instead of !Michael Buesch2007-10-10
| | | | | | | | | We need to use bitwise NOT. This also cleans up the code a little bit to make it more readable. Signed-off-by: Michael Buesch <mb@bu3sch.de> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: remove generic IE for AP interfacesJohannes Berg2007-10-10
| | | | | | | | | This is not useful since we do not support probe response offload to hardware at this time and beacons are set in another way. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: remove all prism2 ioctlsJohannes Berg2007-10-10
| | | | | | | This patch removes all prism2 ioctls. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: fix iff_promiscs, iff_allmultis raceJohannes Berg2007-10-10
| | | | | | | | | | | | | | | | When we update the counters iff_promiscs and iff_allmultis in struct ieee80211_local we have no common lock held to protect them. The problem is that the update to each counter may not be atomic, so we could end up with iff_promiscs == -1 in unfortunate conditions. To fix it, use atomic_t values. It doesn't matter whether the two counters are updated together atomically or not, if there are two invocations of set_multicast_list we will end up with multiple configure_filter() invocations of which the latter will always be correct. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: fix TKIP IV updateJohannes Berg2007-10-10
| | | | | | | | The TKIP IV should be updated only after MMIC verification, this patch changes it to be at that spot. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: fix vlan bugJohannes Berg2007-10-10
| | | | | | | | | | | VLAN interfaces have yet another bug: they aren't accounted for properly in the receive path in prepare_for_handlers(). I noticed this by code inspection, but it would be easy for the compiler to catch such things if we'd just use the proper enum where appropriate. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: remove ieee80211_wep_get_keyidxJohannes Berg2007-10-10
| | | | | | | This function is not used any more. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: consolidate encryptionJohannes Berg2007-10-10
| | | | | | | | | | Currently we run through all crypto handlers for each transmitted frame although we already know which one will be used. This changes the code to invoke only the needed handler. It also moves the wep code into wep.c. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: consolidate decryptionJohannes Berg2007-10-10
| | | | | | | | | | | | Currently, we run through all three crypto algorithms for each received frame even though we have previously determined which key we have and as such already know which algorithm will be used. Change it to invoke only the needed function. Also move the WEP decrypt handler to wep.c so that fewer functions need to be non-static. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: pass frames to monitor interfaces earlyJohannes Berg2007-10-10
| | | | | | | | | | | This makes mac80211 pass all frames to monitor interfaces early before all receive processing with the benefit that only a single copy needs to be made, all monitors can receive clones of the skb and if the frame will be discarded we don't even need to make a single copy. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: fix interface initialisation and deinitialisationJohannes Berg2007-10-10
| | | | | | | | | | | | | | | | | | | | | | When an interface is registered it is still uninitialised so ieee80211_if_reinit() can't be called on it (it will oops.) Hence, we need to move the uninit method assignment. Also, this patch fixes the bug that the master device is never initialised nor deinitialised at all. Oddly, the deinit code had an if statement to not run some code when running for the master interface (which never happened), but that if statement is also wrong. Fix that too. Now that the uninit code is run for the master device, another bug surfaced: it tries to remove all dependent interfaces and that oopses or BUGs at some point, either because it unregisters already unregistered interfaces (missing list_del bug) or due to trying to iterate a list that has had other things removed. Fix this too by handling the master interface specially. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PKT_SCHED]: Add stateless NATHerbert Xu2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stateless NAT is useful in controlled environments where restrictions are placed on through traffic such that we don't need connection tracking to correctly NAT protocol-specific data. In particular, this is of interest when the number of flows or the number of addresses being NATed is large, or if connection tracking information has to be replicated and where it is not practical to do so. Previously we had stateless NAT functionality which was integrated into the IPv4 routing subsystem. This was a great solution as long as the NAT worked on a subnet to subnet basis such that the number of NAT rules was relatively small. The reason is that for SNAT the routing based system had to perform a linear scan through the rules. If the number of rules is large then major renovations would have take place in the routing subsystem to make this practical. For the time being, the least intrusive way of achieving this is to use the u32 classifier written by Alexey Kuznetsov along with the actions infrastructure implemented by Jamal Hadi Salim. The following patch is an attempt at this problem by creating a new nat action that can be invoked from u32 hash tables which would allow large number of stateless NAT rules that can be used/updated in constant time. The actual NAT code is mostly based on the previous stateless NAT code written by Alexey. In future we might be able to utilise the protocol NAT code from netfilter to improve support for other protocols. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] mac80211: fix virtual interface lockingJohannes Berg2007-10-10
| | | | | | | | | | | | | | | | | | | Florian Lohoff noticed a bug in mac80211: when bringing the master interface down while other virtual interfaces are up we call dev_close() under a spinlock which is not allowed. This patch removes the sub_if_lock used by mac80211 in favour of using an RCU list. All list manipulations are already done under rtnl so are well protected against each other, and the read-side locks we took in the RX and TX code are already in RCU read-side critical sections. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Florian Lohoff <flo@rfc822.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Cc: Satyam Sharma <satyam@infradead.org> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: remove crypto algorithm typedefJohannes Berg2007-10-10
| | | | | | | | | The typedef is not required, we can just use "enum ieee80211_key_alg" instead of "ieee80211_key_alg" Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: validate VLAN interfaces betterJohannes Berg2007-10-10
| | | | | | | | | | | | | This patch changes mac80211 to verify that VLAN interfaces are valid and not bother drivers about them any more. VLAN interfaces are now only valid when an AP interface is up with the same MAC address, and are automatically turned off when the AP interface is set down. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Jouni Malinen <j@w1.fi> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: revamp interface and filter configurationJohannes Berg2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drivers are currently supposed to keep track of monitor interfaces if they allow so-called "hard" monitor, and they are also supposed to keep track of multicast etc. This patch changes that, replaces the set_multicast_list() callback with a new configure_filter() callback that takes filter flags (FIF_*) instead of interface flags (IFF_*). For a driver, this means it should open the filter as much as necessary to get all frames requested by the filter flags. Accordingly, the filter flags are named "positively", e.g. FIF_ALLMULTI. Multicast filtering is a bit special in that drivers that have no multicast address filters need to allow multicast frames through when either the FIF_ALLMULTI flag is set or when the mc_count value is positive. At the same time, drivers are no longer notified about monitor interfaces at all, this means they now need to implement the start() and stop() callbacks and the new change_filter_flags() callback. Also, the start()/stop() ordering changed, start() is now called *before* any add_interface() as it really should be, and stop() after any remove_interface(). The patch also changes the behaviour of setting the bssid to multicast for scanning when IEEE80211_HW_NO_PROBE_FILTERING is set; the IEEE80211_HW_NO_PROBE_FILTERING flag is removed and the filter flag FIF_BCN_PRBRESP_PROMISC introduced. This is a lot more efficient for hardware like b43 that supports it and other hardware can still set the BSSID to all-ones. Driver modifications by Johannes Berg (b43 & iwlwifi), Michael Wu (rtl8187, adm8211, and p54), Larry Finger (b43legacy), and Ivo van Doorn (rt2x00). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [NETNS]: Simplify the network namespace list locking rules.Eric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | | | | Denis V. Lunev <den@sw.ru> noticed that the locking rules for the network namespace list are over complicated and broken. In particular the current register_netdev_notifier currently does not take any lock making the for_each_net iteration racy with network namespace creation and destruction. Oops. The fact that we need to use for_each_net in rtnl_unlock() when the rtnetlink support becomes per network namespace makes designing the proper locking tricky. In addition we need to be able to call rtnl_lock() and rtnl_unlock() when we have the net_mutex held. After thinking about it and looking at the alternatives carefully it looks like the simplest and most maintainable solution is to remove net_list_mutex altogether, and to use the rtnl_mutex instead. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM] net/atm/lec.c: printk warning fixAndrew Morton2007-10-10
| | | | | | | | net/atm/lec.c: In function 'lec_start_xmit': net/atm/lec.c:371: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'long unsigned int' Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [WIRELESS]: Fix Kconfig.Andrew Morton2007-10-10
| | | | | | | Seems that a bare "depends" is no longer allowed in Sam's kbuild tree. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Move hardware header operations out of netdevice.Stephen Hemminger2007-10-10
| | | | | | | | | Since hardware header operations are part of the protocol class not the device instance, make them into a separate object and save memory. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Wrap hard_header_parseStephen Hemminger2007-10-10
| | | | | | | | Wrap the hard_header_parse function to simplify next step of header_ops conversion. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Wrap netdevice hardware header creation.Stephen Hemminger2007-10-10
| | | | | | | | | | Add inline for common usage of hardware header creation, and fix bug in IPV6 mcast where the assumption about negative return is an errno. Negative return from hard_header means not enough space was available,(ie -N bytes). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make the loopback device per network namespace.Eric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | This patch makes loopback_dev per network namespace. Adding code to create a different loopback device for each network namespace and adding the code to free a loopback device when a network namespace exits. This patch modifies all users the loopback_dev so they access it as init_net.loopback_dev, keeping all of the code compiling and working. A later pass will be needed to update the users to use something other than the initial network namespace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: When possible test for IFF_LOOPBACK and not dev == loopback_devEric W. Biederman2007-10-10
| | | | | | | | | | Now that multiple loopback devices are becoming possible it makes the code a little cleaner and more maintainable to test if a deivice is th a loopback device by testing dev->flags & IFF_LOOPBACK instead of dev == loopback_dev. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: Remove unnecessary test for the loopback device from inetdev_destroyEric W. Biederman2007-10-10
| | | | | | | | | | | | | | Currently we never call unregister_netdev for the loopback device so it is impossible for us to reach inetdev_destroy with the loopback device. So the test in inetdev_destroy is unnecessary. Further when testing with my network namespace patches removing unregistering the loopback device and calling inetdev_destroy works fine so there appears to be no reason for avoiding unregistering the loopback device. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Add network namespace clone & unshare support.Eric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | This patch allows you to create a new network namespace using sys_clone, or sys_unshare. As the network namespace is still experimental and under development clone and unshare support is only made available when CONFIG_NET_NS is selected at compile time. As this patch introduces network namespace support into code paths that exist when the CONFIG_NET is not selected there are a few additions made to net_namespace.h to allow a few more functions to be used when the networking stack is not compiled in. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Fix running without sysfsEric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | When sysfs support is compiled out the kernel still keeps and maintains the kobject tree. So it is not safe to skip our kobject reference counting or to avoid becoming members of the kobject tree. It is safe to not add the networking specific sysfs attributes. This patch removes the sysfs special cases from net/core/dev.c renames functions from netdev_sysfs_xxxx to netdev_kobject_xxxx and always compiles in net-sysfs.c net-sysfs.c is modified with a CONFIG_SYSFS guard around the parts that are actually sysfs specific. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>