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* net: cleanup unsigned to unsigned intEric Dumazet2012-04-151-2/+2
| | | | | | | Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: br_log_state() s/entering/entered/Paulius Zaleckas2012-03-081-1/+1
| | | | | | | | | When br_log_state() is reporting state it should say "entered" istead of "entering" since state at this point is already changed. Signed-off-by: Paulius Zaleckas <paulius.zaleckas@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: message age needs to increase, not decrease.Joakim Tjernlund2012-03-041-1/+1
| | | | | | | | | | | | | commit bridge: send proper message_age in config BPDU added this gem: bpdu.message_age = (jiffies - root->designated_age) p->designated_age = jiffies + bpdu->message_age; Notice how bpdu->message_age is negated when reassigned to bpdu.message_age. This causes message age to decrease breaking the STP protocol. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: Adjust min age inc for HZ > 256Joakim Tjernlund2012-03-041-2/+2
| | | | | | | | min age increment needs to round up its min age tick for all HZ values to guarantee message age is increasing. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: master device stuck in no-carrier state forever when in user-stp modeVitalii Demianets2011-12-011-15/+14
| | | | | | | | | | | | | | | | | | | When in user-stp mode, bridge master do not follow state of its slaves, so after the following sequence of events it can stuck forever in no-carrier state: 1) turn stp off 2) put all slaves down - master device will follow their state and also go in no-carrier state 3) turn stp on with bridge-stp script returning 0 (go to the user-stp mode) Now bridge master won't follow slaves' state and will never reach running state. This patch solves the problem by making user-stp and kernel-stp behavior similar regarding master following slaves' states. Signed-off-by: Vitalii Demianets <vitas@nppfactor.kiev.ua> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: minor cleanupsstephen hemminger2011-07-221-12/+11
| | | | | | | | | | | Some minor cleanups that won't impact code: 1. Remove inline from non-critical functions; compiler will most likely inline them anyway. 2. Make function args const where possible. 3. Whitespace cleanup Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: add notification over netlink when STP changes statestephen hemminger2011-07-221-1/+3
| | | | | | | | When STP changes state of interface need to send a new link message to reflect that change. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: send proper message_age in config BPDUstephen hemminger2011-07-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A bridge topology with three systems: +------+ +------+ | A(2) |--| B(1) | +------+ +------+ \ / +------+ | C(3) | +------+ What is supposed to happen: * bridge with the lowest ID is elected root (for example: B) * C detects that A->C is higher cost path and puts in blocking state What happens. Bridge with lowest id (B) is elected correctly as root and things start out fine initially. But then config BPDU doesn't get transmitted from A -> C. Because of that the link from A-C is transistioned to the forwarding state. The root cause of this is that the configuration messages is generated with bogus message age, and dropped before sending. In the standardmessage_age is supposed to be: the time since the generation of the Configuration BPDU by the Root that instigated the generation of this Configuration BPDU. Reimplement this by recording the timestamp (age + jiffies) when recording config information. The old code incorrectly used the time elapsed on the ageing timer which was incorrect. See also: https://bugzilla.vyatta.com/show_bug.cgi?id=7164 Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: range check STP parametersstephen hemminger2011-04-041-0/+48
| | | | | | | | | | | | | | | | | | | | | | | | Apply restrictions on STP parameters based 802.1D 1998 standard. * Fixes missing locking in set path cost ioctl * Uses common code for both ioctl and sysfs This is based on an earlier patch Sasikanth V but with overhaul. Note: 1. It does NOT enforce the restriction on the relationship max_age and forward delay or hello time because in existing implementation these are set as independant operations. 2. If STP is disabled, there is no restriction on forward delay 3. No restriction on holding time because users use Linux code to act as hub or be sticky. 4. Although standard allow 0-255, Linux only allows 0-63 for port priority because more bits are reserved for port number. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2011-03-151-2/+2
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
| * bridge: skip forwarding delay if not using STPstephen hemminger2011-03-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If Spanning Tree Protocol is not enabled, there is no good reason for the bridge code to wait for the forwarding delay period before enabling the link. The purpose of the forwarding delay is to allow STP to learn about other bridges before nominating itself. The only possible impact is that when starting up a new port the bridge may flood a packet now, where previously it might have seen traffic from the other host and preseeded the forwarding table. Includes change for local variable br already available in that func. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: control carrier based on ports onlinestephen hemminger2011-03-141-13/+22
|/ | | | | | | | | | | | | | | | | This makes the bridge device behave like a physical device. In earlier releases the bridge always asserted carrier. This changes the behavior so that bridge device carrier is on only if one or more ports are in the forwarding state. This should help IPv6 autoconfiguration, DHCP, and routing daemons. I did brief testing with Network and Virt manager and they seem fine, but since this changes behavior of bridge, it should wait until net-next (2.6.39). Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Tested-By: Adam Majer <adamm@zombino.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: change console message interfacestephen hemminger2010-05-151-6/+5
| | | | | | | | | | Use one set of macro's for all bridge messages. Note: can't use netdev_XXX macro's because bridge is purely virtual and has no device parent. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: Add multicast start/stop hooksHerbert Xu2010-02-281-0/+2
| | | | | | | | This patch hooks up the bridge start/stop and add/delete/disable port functions to the new multicast module. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: mark read-only arrays as constJan Engelhardt2009-08-051-1/+1
| | | | | | | | String literals are constant, and usually, we can also tag the array of pointers const too, moving it to the .rodata section. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: fix initial packet flood if !STPStephen Hemminger2009-05-171-0/+3
| | | | | | | | | | | | | | | | | | If bridge is configured with no STP and forwarding delay of 0 (which is typical for virtualization) then when link starts it will flood all packets for the first 20 seconds. This bug was introduced by a combination of earlier changes: * forwarding database uses hold time of zero to indicate user wants to always flood packets * optimzation of the case of forwarding delay of 0 avoids the initial timer tick The fix is to just skip all the topology change detection code if kernel STP is not being used. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: Eliminate unnecessary forward delayStephen Hemminger2008-08-051-7/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Stephen Hemminger <shemminger@vyatta.com> Based upon original patch by Herbert Xu, which contained the following problem description: -------------------- When the forward delay is set to zero, we still delay the setting of the forwarding state by one or possibly two timers depending on whether STP is enabled. This could either turn out to be instantaneous, or horribly slow depending on the load of the machine. As there is nothing preventing us from enabling forwarding straight away, this patch eliminates this potential delay by executing the code directly if the forward delay is zero. The effect of this problem is that immediately after the carrier comes on a port, the bridge will drop all packets received from that port until it enters forwarding mode, thus causing unnecessary packet loss. Note that this patch doesn't fully remove the delay due to the link watcher. We should also check the carrier state when we are about to drop an incoming packet because the port is disabled. But that's for another patch. -------------------- This version of the fix takes a different approach, in that it just does the state change directly. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2008-07-181-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/powerpc/booting-without-of.txt drivers/atm/Makefile drivers/net/fs_enet/fs_enet-main.c drivers/pci/pci-acpi.c net/8021q/vlan.c net/iucv/iucv.c
| * rcu: split list.h and move rcu-protected lists into rculist.hFranck Bui-Huu2008-05-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move rcu-protected lists from list.h into a new header file rculist.h. This is done because list are a very used primitive structure all over the kernel and it's currently impossible to include other header files in this list.h without creating some circular dependencies. For example, list.h implements rcu-protected list and uses rcu_dereference() without including rcupdate.h. It actually compiles because users of rcu_dereference() are macros. Others RCU functions could be used too but aren't probably because of this. Therefore this patch creates rculist.h which includes rcupdates without to many changes/troubles. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Josh Triplett <josh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | net: remove CVS keywordsAdrian Bunk2008-06-111-2/+0
|/ | | | | | | | 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>
* [BRIDGE]: Round off STP perodic timers.Stephen Hemminger2007-05-311-1/+2
| | | | | | | | | Peroidic STP timers don't have to be exact. The hold timer runs at 1HZ, and the hello timer normally runs at 2HZ; save power by aligning it them to next second. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-081-1/+0
| | | | | | | | | | | | Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* bridge: add support for user mode STPStephen Hemminger2007-04-251-3/+7
| | | | | | | | | | This patchset based on work by Aji_Srinivas@emc.com provides allows spanning tree to be controled from userspace. Like hotplug, it uses call_usermodehelper when spanning tree is enabled so there is no visible API change. If call to start usermode STP fails it falls back to existing kernel STP. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
* [NET] BRIDGE: Fix whitespace errors.YOSHIFUJI Hideaki2007-02-101-12/+12
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+459
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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