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* [NET]: Make the device list and device lookups per namespace.Eric W. Biederman2007-10-101-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [BRIDGE]: Fix OOPS when bridging device without ethtool.Stephen Hemminger2007-08-301-8/+8
| | | | | | | | | | | | | | | Bridge code calls ethtool to get speed. The conversion to using only ethtool_ops broke the case of devices without ethtool_ops. This is a new regression in 2.6.23. Rearranged the switch to a logical order, and use gcc initializer. Ps: speed should have been part of the network device structure from the start rather than burying it in ethtool. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Acked-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Share correct feature code between bridging and bondingHerbert Xu2007-08-131-32/+4
| | | | | | | | | | | | | | | | | | | | | | | | | http://bugzilla.kernel.org/show_bug.cgi?id=8797 shows that the bonding driver may produce bogus combinations of the checksum flags and SG/TSO. For example, if you bond devices with NETIF_F_HW_CSUM and NETIF_F_IP_CSUM you'll end up with a bonding device that has neither flag set. If both have TSO then this produces an illegal combination. The bridge device on the other hand has the correct code to deal with this. In fact, the same code can be used for both. So this patch moves that logic into net/core/dev.c and uses it for both bonding and bridging. In the process I've made small adjustments such as only setting GSO_ROBUST if at least one constituent device supports it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: ethtool ops are the only wayMatthew Wilcox2007-07-311-26/+15
| | | | | | | | | | | | | | | During the transition to the ethtool_ops way of doing things, we supported calling the device's ->do_ioctl method to allow unconverted drivers to continue working. Those days are long behind us, all in-tree drivers use the ethtool_ops way, and so we no longer need to support this. The bonding driver is the biggest beneficiary of this; it no longer needs to call ioctl() as a fallback if ethtool_ops aren't supported. Also put a proper copyright statement on ethtool.c. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: IPV6 checksum offloading in network devicesStephen Hemminger2007-07-101-1/+9
| | | | | | | | | | | | | | | The existing model for checksum offload does not correctly handle devices that can offload IPV4 and IPV6 only. The NETIF_F_HW_CSUM flag implies device can do any arbitrary protocol. This patch: * adds NETIF_F_IPV6_CSUM for those devices * fixes bnx2 and tg3 devices that need it * add NETIF_F_IPV6_CSUM to ipv6 output (incl GSO) * fixes assumptions about NETIF_F_ALL_CSUM in nat * adjusts bridge union of checksumming computation Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Rework dev_base via list_head (v3)Pavel Emelianov2007-05-031-3/+1
| | | | | | | | | | | | Cleanup of dev_base list use, with the aim to simplify making device list per-namespace. In almost every occasion, use of dev_base variable and dev->next pointer could be easily replaced by for_each_netdev loop. A few most complicated places were converted to using first_netdev()/next_netdev(). Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Kirill Korotaev <dev@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: change when netlink events go to STPStephen Hemminger2007-04-251-0/+4
| | | | | | | Need to tell STP daemon about more events, like any time a device is added even when it is down. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
* bridge: add support for user mode STPStephen Hemminger2007-04-251-1/+1
| | | | | | | | | | 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>
* [BRIDGE]: adding new device to bridge should enable if upAji Srinivas2007-03-071-0/+4
| | | | | | | | | | | | | | One change introduced by the workqueue removal patch is that adding an interface that is up to a bridge which is also up does not ever call br_stp_enable_port(), leaving the port in DISABLED state until we do ifconfig down and up or link events occur. The following patch to the br_add_if function fixes it. This is a regression introduced in 2.6.21. Submitted-by: Aji_Srinivas@emc.com Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: eliminate workqueue for carrier checkStephen Hemminger2007-02-261-25/+5
| | | | | | | | | 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>
* [BRIDGE] br_if: Fix oops in port_carrier_checkJarek Poplawski2007-02-131-2/+6
| | | | | | Signed-off-by: Jarek Poplawski <jarkao2@o2.pl> Acked-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] BRIDGE: Fix whitespace errors.YOSHIFUJI Hideaki2007-02-101-13/+13
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Network: convert network devices to use struct device instead of class_deviceGreg Kroah-Hartman2007-02-071-1/+1
| | | | | | | | | | | This lets the network core have the ability to handle suspend/resume issues, if it wants to. Thanks to Frederik Deweerdt <frederik.deweerdt@gmail.com> for the arm driver fixes. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* WorkStruct: make allyesconfigDavid Howells2006-11-221-3/+7
| | | | | | Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
* [BRIDGE]: flush forwarding table when device carrier offStephen Hemminger2006-10-151-2/+2
| | | | | | | | | 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>
* [BRIDGE]: Disable SG/GSO if TX checksum is offHerbert Xu2006-08-171-1/+6
| | | | | | | | | | | | | When the bridge recomputes features, it does not maintain the constraint that SG/GSO must be off if TX checksum is off. This patch adds that constraint. On a completely unrelated note, I've also added TSO6 and TSO_ECN feature bits if GSO is enabled on the underlying device through the new NETIF_F_GSO_SOFTWARE macro. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Added GSO header verificationHerbert Xu2006-06-291-1/+2
| | | | | | | | | | | | | | | | | | | | | | When GSO packets come from an untrusted source (e.g., a Xen guest domain), we need to verify the header integrity before passing it to the hardware. Since the first step in GSO is to verify the header, we can reuse that code by adding a new bit to gso_type: SKB_GSO_DODGY. Packets with this bit set can only be fed directly to devices with the corresponding bit NETIF_F_GSO_ROBUST. If the device doesn't have that bit, then the skb is fed to the GSO engine which will allow the packet to be sent to the hardware if it passes the header check. This patch changes the sg flag to a full features flag. The same method can be used to implement TSO ECN support. We simply have to mark packets with CWR set with SKB_GSO_ECN so that only hardware with a corresponding NETIF_F_TSO_ECN can accept them. The GSO engine can either fully segment the packet, or segment the first MTU and pass the rest to the hardware for further segmentation. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Added GSO toggleHerbert Xu2006-06-231-6/+11
| | | | | | | | This patch adds a generic segmentation offload toggle that can be turned on/off for each net device. For now it only supports in TCPv4. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: Add support for NETIF_F_HW_CSUM devicesHerbert Xu2006-06-171-3/+9
| | | | | | | | | | | As it is the bridge will only ever declare NETIF_F_IP_CSUM even if all its constituent devices support NETIF_F_HW_CSUM. This patch fixes this by supporting the first one out of NETIF_F_NO_CSUM, NETIF_F_HW_CSUM, and NETIF_F_IP_CSUM that is supported by all constituent devices. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Add NETIF_F_GEN_CSUM and NETIF_F_ALL_CSUMHerbert Xu2006-06-171-2/+1
| | | | | | | | | | | The current stack treats NETIF_F_HW_CSUM and NETIF_F_NO_CSUM identically so we test for them in quite a few places. For the sake of brevity, I'm adding the macro NETIF_F_GEN_CSUM for these two. We also test the disjunct of NETIF_F_IP_CSUM and the other two in various places, for that purpose I've added NETIF_F_ALL_CSUM. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: fix locking and memory leak in br_add_bridgeJiri Benc2006-06-051-12/+7
| | | | | | | | | | | | There are several bugs in error handling in br_add_bridge: - when dev_alloc_name fails, allocated net_device is not freed - unregister_netdev is called when rtnl lock is held - free_netdev is called before netdev_run_todo has a chance to be run after unregistering net_device Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: Do sysfs registration inside rtnl.Stephen Hemminger2006-05-101-14/+7
| | | | | | | | | Now that netdevice sysfs registration is done as part of register_netdevice; bridge code no longer has to be tricky when adding it's kobjects to bridges. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: use kzallocStephen Hemminger2006-03-201-3/+3
| | | | | | | | | Use kzalloc versus kmalloc+memset. Also don't need to do memset() of bridge address since it is in netdev private data that is already zero'd in alloc_netdev. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: use kcallocStephen Hemminger2006-03-201-2/+1
| | | | | | | Use kcalloc rather than kmalloc + memset. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: generate kobject remove eventStephen Hemminger2006-03-041-0/+1
| | | | | | | | | | The earlier round of kobject/sysfs changes to bridge caused it not to generate a uevent on removal. Don't think any application cares (not sure about Xen) but since it generates add uevent it should generate remove as well. Signed-off-by: Stephen Hemminger <shemmigner@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: port timer initializationStephen Hemminger2006-03-041-1/+2
| | | | | | | | | Initialize the STP timers for a port when it is created, rather than when it is enabled. This will prevent future race conditions where timer gets started before port is enabled. Signed-off-by: Stephen Hemminger <shemmigner@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: fix crash in STPStephen Hemminger2006-03-041-14/+15
| | | | | | | | | | | | | Bridge would crash because of uninitailized timer if STP is used and device was inserted into a bridge before bridge was up. This got introduced when the delayed port checking was added. Fix is to not enable STP on port unless bridge is up. Bugzilla: http://bugzilla.kernel.org/show_bug.cgi?id=6140 Dup: http://bugzilla.kernel.org/show_bug.cgi?id=6156 Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: fix error handling for add interface to bridgeStephen Hemminger2006-02-091-22/+55
| | | | | | | | | 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>
* [BRIDGE]: fix for RCU and deadlock on device removalStephen Hemminger2006-02-091-10/+11
| | | | | | | | | 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>
* [BRIDGE]: Fix device delete race.Stephen Hemminger2006-01-311-6/+15
| | | | | | | | | | | | 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>
* [NET]: Change 1500 to ETH_DATA_LEN in some filesKris Katterjohn2006-01-051-2/+3
| | | | | | | | These patches add the header linux/if_ether.h and change 1500 to ETH_DATA_LEN in some files. Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: limited ethtool supportStephen Hemminger2006-01-031-3/+3
| | | | | | | | | | | 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>
* [BRIDGE]: handle speed detection after carrier changesStephen Hemminger2006-01-031-11/+38
| | | | | | | | | | | | 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>
* [BRIDGE]: recompute features when adding a new deviceOlaf Rempel2005-11-231-0/+1
| | | | | | | | | | We must recompute bridge features everytime the list of underlying devices changes, or we might end up with features that are not supported by all devices (eg. NETIF_F_TSO) This patch adds the missing recompute when adding a device to the bridge. Signed-off-by: Olaf Rempel <razzor@kopf-tisch.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: fix race on bridge del ifStephen Hemminger2005-10-121-1/+1
| | | | | | | | | | | | | This fixes the RCU race on bridge delete interface. Basically, the network device has to be detached from the bridge in the first step (pre-RCU), rather than later. At that point, no more bridge traffic will come in, and the other code will not think that network device is part of a bridge. This should also fix the XEN test problems. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BRIDGE]: set features based on enslaved devicesStephen Hemminger2005-05-291-0/+23
| | | | | | | | | 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>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+388
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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