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path: root/net/bridge/br_private.h
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2009-09-01netdev: convert pseudo-devices to netdev_tx_tStephen Hemminger
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-13net/bridge: Add 'hairpin' port forwarding modeFischer, Anna
This patch adds a 'hairpin' (also called 'reflective relay') mode port configuration to the Linux Ethernet bridge kernel module. A bridge supporting hairpin forwarding mode can send frames back out through the port the frame was received on. Hairpin mode is required to support basic VEPA (Virtual Ethernet Port Aggregator) capabilities. You can find additional information on VEPA here: http://tech.groups.yahoo.com/group/evb/ http://www.ieee802.org/1/files/public/docs2009/new-hudson-vepa_seminar-20090514d.pdf http://www.internet2.edu/presentations/jt2009jul/20090719-congdon.pdf An additional patch 'bridge-utils: Add 'hairpin' port forwarding mode' is provided to allow configuring hairpin mode from userspace tools. Signed-off-by: Paul Congdon <paul.congdon@hp.com> Signed-off-by: Anna Fischer <anna.fischer@hp.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-11bridge: Simplify interface for ATM LANEMichał Mirosław
This patch changes FDB entry check for ATM LANE bridge integration. There's no point in holding a FDB entry around SKB building. br_fdb_get()/br_fdb_put() pair are changed into single br_fdb_test_addr() hook that checks if the addr has FDB entry pointing to other port to the one the request arrived on. FDB entry refcounting is removed as it's not used anywhere else. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-08netns bridge: cleanup bridges during netns stopAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Stephen Hemminger <shemming@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-08netns bridge: allow bridges in netns!Alexey Dobriyan
Bridge as netdevice doesn't cross netns boundaries. Bridge ports and bridge itself live in same netns. Notifiers are fixed. netns propagated from userspace socket for setup and teardown. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Stephen Hemminger <shemming@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-30bridge: send correct MTU value in PMTU (revised)Simon Wunderlich
When bridging interfaces with different MTUs, the bridge correctly chooses the minimum of the MTUs of the physical devices as the bridges MTU. But when a frame is passed which fits through the incoming, but not through the outgoing interface, a "Fragmentation Needed" packet is generated. However, the propagated MTU is hardcoded to 1500, which is wrong in this situation. The sender will repeat the packet again with the same frame size, and the same problem will occur again. Instead of sending 1500, the (correct) MTU value of the bridge is now sent via PMTU. To achieve this, the corresponding rtable structure is stored in its net_bridge structure. Modified to get rid of fake_net_device as well. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-05bridge: Use STP demuxPatrick McHardy
Use the STP demux layer for receiving STP PDUs instead of directly registering with LLC. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17bridge: make bridge address settings stickyStephen Hemminger
Normally, the bridge just chooses the smallest mac address as the bridge id and mac address of bridge device. But if the administrator has explictly set the interface address then don't change it. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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>
2008-05-21bridge: Use on-device stats instead of private ones.Pavel Emelyanov
Even though bridges require 6 fields from struct net_device_stats, the on-device stats are always there, so we may just use them. The br_dev_get_stats is no longer required after this. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-24Kobject: change net/bridge to use kobject_create_and_addGreg Kroah-Hartman
The kobject in the bridge code is only used for registering with sysfs, not for any lifespan rules. This patch changes it to be only a pointer and use the simpler api for this kind of thing. Cc: Stephen Hemminger <shemminger@linux-foundation.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-10[NET]: Make the device list and device lookups per namespace.Eric W. Biederman
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 <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-16[BRIDGE]: Kill clone argument to br_flood_*Herbert Xu
The clone argument is only used by one caller and that caller can clone the packet itself. This patch moves the clone call into the caller and kills the clone argument. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25bridge: check kmem_cache_create() errorAkinobu Mita
This patch checks kmem_cache_create() error and aborts loading module on failure. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
2007-04-25bridge: add support for user mode STPStephen Hemminger
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>
2007-04-25bridge: add sysfs hook to flush forwarding tableStephen Hemminger
The RSTP daemon needs to be able to flush all dynamic forwarding entries in the case of topology change. This is a temporary interface. It will change to a netlink interface before RSTP daemon is officially released. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
2007-04-25bridge: eliminate call by referenceStephen Hemminger
Change the bridging hook to be simple function with return value rather than modifying the skb argument. This could generate better code and is cleaner. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
2007-04-25[BRIDGE]: Use rtnl registration interfaceThomas Graf
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-26[BRIDGE]: eliminate workqueue for carrier checkStephen Hemminger
Having a work queue for checking carrier leads to lots of race issues. Simpler to just get the cost when data structure is created and update on change. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-26[BRIDGE]: get rid of miscdevice includeStephen Hemminger
The bridge hasn't used miscdevice for a long long time. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-10[NET] BRIDGE: Fix whitespace errors.YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-22WorkStruct: make allyesconfigDavid Howells
Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-10-15[BRIDGE]: flush forwarding table when device carrier offStephen Hemminger
Flush the forwarding table when carrier is lost. This helps for availability because we don't want to forward to a downed device and new packets may come in on other links. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-17[BRIDGE]: netlink interface for link managementStephen Hemminger
Add basic netlink support to the Ethernet bridge. Including: * dump interfaces in bridges * monitor link status changes * change state of bridge port For some demo programs see: http://developer.osdl.org/shemminger/prototypes/brnl.tar.gz These are to allow building a daemon that does alternative implementations of Spanning Tree Protocol. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-17[BRIDGE]: fix module startup error handlingStephen Hemminger
Return address in use, if some other kernel code has the SAP. Propogate out error codes from netfilter registration and unwind. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[BRIDGE]: allow show/store of group multicast addressStephen Hemminger
Bridge's communicate with each other using Spanning Tree Protocol over a standard multicast address. There are times when testing or layering bridges over existing topologies or tunnels, when it is useful to use alternative multicast addresses for STP packets. The 802.1d standard has some unused addresses, that can be used for this. This patch is restrictive in that it only allows one of the possible addresses in the standard. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[BRIDGE]: use llc for receiving STP packetsStephen Hemminger
Use LLC for the receive path of Spanning Tree Protocol packets. This allows link local multicast packets to be received by other protocols (if they care), and uses the existing LLC code to get STP packets back into bridge code. The bridge multicast address is also checked, so bridges using other link local multicast addresses are ignored. This allows for use of different multicast addresses to define separate STP domains. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-09[BRIDGE]: fix error handling for add interface to bridgeStephen Hemminger
Refactor how the bridge code interacts with kobject system. It should still use kobjects even if not using sysfs. Fix the error unwind handling in br_add_if. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-09[BRIDGE]: fix for RCU and deadlock on device removalStephen Hemminger
Change Bridge receive path to correctly handle RCU removal of device from bridge. Also fixes deadlock between carrier_check and del_nbp. This replaces the previous deleted flag fix. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-31[BRIDGE]: Fix device delete race.Stephen Hemminger
This is a simpler fix for the two races in bridge device removal. The Xen race of delif and notify is managed now by a new deleted flag. No need for barriers or other locking because of rtnl mutex. The del_timer_sync()'s are unnecessary, because br_stp_disable_port delete's the timers, and they will finish running before RCU callback. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-03[BRIDGE]: add version numberStephen Hemminger
Add version info to bridge module. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-03[BRIDGE]: limited ethtool supportStephen Hemminger
Add limited ethtool support to bridge to allow disabling features. Note: if underlying device does not support a feature (like checksum offload), then the bridge device won't inherit it. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-03[BRIDGE]: handle speed detection after carrier changesStephen Hemminger
Speed of a interface may not be available until carrier is detected in the case of autonegotiation. To get the correct value we need to recheck speed after carrier event. But the check needs to be done in a context that is similar to normal ethtool interface (can sleep). Also, delay check for 1ms to try avoid any carrier bounce transitions. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-03[BRIDGE]: allow setting hardware address of bridge pseudo-devStephen Hemminger
Some people are using bridging to hide multiple machines from an ISP that restricts by MAC address. So in that case allow the bridge mac address to be set to any of the existing interfaces. I don't want to allow any arbitrary value and confuse STP. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-29[BRIDGE]: set features based on enslaved devicesStephen Hemminger
Make features of the bridge pseudo-device be a subset of the underlying devices. Motivated by Xen and others who use bridging to do failover. Signed-off-by: Catalin BOIE <catab at umrella.ro> Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
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!