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* can: convert protocol handling to RCUOliver Hartkopp2011-04-061-20/+32
| | | | | | | | | | | | This patch removes spin_locks at CAN socket creation time by using RCU. Inspired by the discussion with Kurt van Dijck and Eric Dumazet the RCU code was partly derived from af_phonet.c Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'for-davem' of ↵David S. Miller2011-04-061-2/+53
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc-next-2.6
| * ethtool: Change ETHTOOL_PHYS_ID implementation to allow dropping RTNLBen Hutchings2011-04-051-2/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ethtool ETHTOOL_PHYS_ID command runs for an arbitrarily long period of time, holding the RTNL lock. This blocks routing updates, device enumeration, and various important operations that one might want to keep running while hunting for the flashing LED. We need to drop the RTNL lock during this operation, but currently the core implementation is a thin wrapper around a driver operation and drivers may well depend upon holding the lock. Define a new driver operation 'set_phys_id' with an argument that sets the ID indicator on/off/inactive/active (the last optional, for any driver or firmware that prefers to handle blinking asynchronously). When this is defined, the ethtool core drops the lock while waiting and only acquires it around calls to this operation. Deprecate the 'phys_id' operation in favour of this. It can be removed once all in-tree drivers are converted. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* | net: Allow no-cache copy from user on transmitTom Herbert2011-04-053-4/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch uses __copy_from_user_nocache on transmit to bypass data cache for a performance improvement. skb_add_data_nocache and skb_copy_to_page_nocache can be called by sendmsg functions to use this feature, initial support is in tcp_sendmsg. This functionality is configurable per device using ethtool. Presumably, this feature would only be useful when the driver does not touch the data. The feature is turned on by default if a device indicates that it does some form of checksum offload; it is off by default for devices that do no checksum offload or indicate no checksum is necessary. For the former case copy-checksum is probably done anyway, in the latter case the device is likely loopback in which case the no cache copy is probably not beneficial. This patch was tested using 200 instances of netperf TCP_RR with 1400 byte request and one byte reply. Platform is 16 core AMD x86. No-cache copy disabled: 672703 tps, 97.13% utilization 50/90/99% latency:244.31 484.205 1028.41 No-cache copy enabled: 702113 tps, 96.16% utilization, 50/90/99% latency 238.56 467.56 956.955 Using 14000 byte request and response sizes demonstrate the effects more dramatically: No-cache copy disabled: 79571 tps, 34.34 %utlization 50/90/95% latency 1584.46 2319.59 5001.76 No-cache copy enabled: 83856 tps, 34.81% utilization 50/90/95% latency 2508.42 2622.62 2735.88 Note especially the effect on latency tail (95th percentile). This seems to provide a nice performance improvement and is consistent in the tests I ran. Presumably, this would provide the greatest benfits in the presence of an application workload stressing the cache and a lot of transmit data happening. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: range check STP parametersstephen hemminger2011-04-057-93/+107
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | bridge: allow creating bridge devices with netlinkstephen hemminger2011-04-055-87/+101
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add netlink device ops to allow creating bridge device via netlink. This works in a manner similar to vlan, macvlan and bonding. Example: # ip link add link dev br0 type bridge # ip link del dev br0 The change required rearranging initializtion code to deal with being called by create link. Most of the initialization happens in br_dev_setup, but allocation of stats is done in ndo_init callback to deal with allocation failure. Sysfs setup has to wait until after the network device kobject is registered. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: allow creating/deleting fdb entries via netlinkstephen hemminger2011-04-053-0/+144
| | | | | | | | | | | | | | | | | | | | | | | | Use RTM_NEWNEIGH and RTM_DELNEIGH to allow updating of entries in bridge forwarding table. This allows manipulating static entries which is not possible with existing tools. Example (using bridge extensions to iproute2) # br fdb add 00:02:03:04:05:06 dev eth0 Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: add netlink notification on forward entry changesstephen hemminger2011-04-053-0/+127
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows applications to query and monitor bridge forwarding table in the same method used for neighbor table. The forward table entries are returned in same structure format as used by the ioctl. If more information is desired in future, the netlink method is extensible. Example (using bridge extensions to iproute2) # br monitor Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: split rcu and no-rcu cases of fdb lookupstephen hemminger2011-04-051-3/+16
| | | | | | | | | | | | | | | | | | In some cases, look up of forward database entry is done with RCU; and for others no RCU is needed because of locking. Split the two cases into two differnt loops (and take off inline). Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: track last used time in forwarding tablestephen hemminger2011-04-053-8/+10
| | | | | | | | | | | | | | | | Adds tracking the last used time in forwarding table. Rename ageing_timer to updated to better describe it. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: change arguments to fdb_createstephen hemminger2011-04-051-8/+10
| | | | | | | | | | | | | | | | | | Later patch provides ability to create non-local static entry. To make this easier move the updating of the flag values to after the code that creates entry. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | pkt_sched: QFQ - quick fair queue schedulerstephen hemminger2011-04-043-0/+1149
| | | | | | | | | | | | | | | | | | | | | | This is an implementation of the Quick Fair Queue scheduler developed by Fabio Checconi. The same algorithm is already implemented in ipfw in FreeBSD. Fabio had an earlier version developed on Linux, I just cleaned it up. Thanks to Eric Dumazet for testing this under load. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'master' of ↵David S. Miller2011-04-0412-35/+74
|\ \ | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
| * | tcp: len check is unnecessarily devastating, change to WARN_ONIlpo Järvinen2011-04-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All callers are prepared for alloc failures anyway, so this error can safely be boomeranged to the callers domain without super bad consequences. ...At worst the connection might go into a state where each RTO tries to (unsuccessfully) re-fragment with such a mis-sized value and eventually dies. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sctp: malloc enough room for asconf-ack chunkWei Yongjun2011-04-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometime the ASCONF_ACK parameters can equal to the fourfold of ASCONF parameters, this only happend in some special case: ASCONF parameter is : Unrecognized Parameter (4 bytes) ASCONF_ACK parameter should be: Error Cause Indication parameter (8 bytes header) + Error Cause (4 bytes header) + Unrecognized Parameter (4bytes) Four 4bytes Unrecognized Parameters in ASCONF chunk will cause panic. Pid: 0, comm: swapper Not tainted 2.6.38-next+ #22 Bochs Bochs EIP: 0060:[<c0717eae>] EFLAGS: 00010246 CPU: 0 EIP is at skb_put+0x60/0x70 EAX: 00000077 EBX: c09060e2 ECX: dec1dc30 EDX: c09469c0 ESI: 00000000 EDI: de3c8d40 EBP: dec1dc58 ESP: dec1dc2c DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process swapper (pid: 0, ti=dec1c000 task=c09aef20 task.ti=c0980000) Stack: c09469c0 e1894fa4 00000044 00000004 de3c8d00 de3c8d00 de3c8d44 de3c8d40 c09060e2 de25dd80 de3c8d40 dec1dc7c e1894fa4 dec1dcb0 00000040 00000004 00000000 00000800 00000004 00000004 dec1dce0 e1895a2b dec1dcb4 de25d960 Call Trace: [<e1894fa4>] ? sctp_addto_chunk+0x4e/0x89 [sctp] [<e1894fa4>] sctp_addto_chunk+0x4e/0x89 [sctp] [<e1895a2b>] sctp_process_asconf+0x32f/0x3d1 [sctp] [<e188d554>] sctp_sf_do_asconf+0xf8/0x173 [sctp] [<e1890b02>] sctp_do_sm+0xb8/0x159 [sctp] [<e18a2248>] ? sctp_cname+0x0/0x52 [sctp] [<e189392d>] sctp_assoc_bh_rcv+0xac/0xe3 [sctp] [<e1897d76>] sctp_inq_push+0x2d/0x30 [sctp] [<e18a21b2>] sctp_rcv+0x7a7/0x83d [sctp] [<c077a95c>] ? ipv4_confirm+0x118/0x125 [<c073a970>] ? nf_iterate+0x34/0x62 [<c074789d>] ? ip_local_deliver_finish+0x0/0x194 [<c074789d>] ? ip_local_deliver_finish+0x0/0x194 [<c0747992>] ip_local_deliver_finish+0xf5/0x194 [<c074789d>] ? ip_local_deliver_finish+0x0/0x194 [<c0747a6e>] NF_HOOK.clone.1+0x3d/0x44 [<c0747ab3>] ip_local_deliver+0x3e/0x44 [<c074789d>] ? ip_local_deliver_finish+0x0/0x194 [<c074775c>] ip_rcv_finish+0x29f/0x2c7 [<c07474bd>] ? ip_rcv_finish+0x0/0x2c7 [<c0747a6e>] NF_HOOK.clone.1+0x3d/0x44 [<c0747cae>] ip_rcv+0x1f5/0x233 [<c07474bd>] ? ip_rcv_finish+0x0/0x2c7 [<c071dce3>] __netif_receive_skb+0x310/0x336 [<c07221f3>] netif_receive_skb+0x4b/0x51 [<e0a4ed3d>] cp_rx_poll+0x1e7/0x29c [8139cp] [<c072275e>] net_rx_action+0x65/0x13a [<c0445a54>] __do_softirq+0xa1/0x149 [<c04459b3>] ? __do_softirq+0x0/0x149 <IRQ> [<c0445891>] ? irq_exit+0x37/0x72 [<c040a7e9>] ? do_IRQ+0x81/0x95 [<c07b3670>] ? common_interrupt+0x30/0x38 [<c0428058>] ? native_safe_halt+0xa/0xc [<c040f5d7>] ? default_idle+0x58/0x92 [<c0408fb0>] ? cpu_idle+0x96/0xb2 [<c0797989>] ? rest_init+0x5d/0x5f [<c09fd90c>] ? start_kernel+0x34b/0x350 [<c09fd0cb>] ? i386_start_kernel+0xba/0xc1 Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'master' of ↵David S. Miller2011-04-029-27/+64
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
| | * | mac80211: fix aggregation frame release during timeoutDaniel Halperin2011-03-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Suppose the aggregation reorder buffer looks like this: x-T-R1-y-R2, where x and y are frames that have not been received, T is a received frame that has timed out, and R1,R2 are received frames that have not yet timed out. The proper behavior in this scenario is to move the window past x (skipping it), release T and R1, and leave the window at y until y is received or R2 times out. As written, this code will instead leave the window at R1, because it has not yet timed out. Fix this by exiting the reorder loop only when the frame that has not timed out AND there are skipped frames earlier in the current valid window. Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | cfg80211: fix BSS double-unlinking (continued)Juuso Oikarinen2011-03-281-7/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds to the fix "fix BSS double-unlinking" (commit 3207390a8b58bfc1335750f91cf6783c48ca19ca) by Johannes Berg. It turns out, that the double-unlinking scenario can also occur if expired BSS elements are removed whilst an interface is performing association. To work around that, replace list_del with list_del_init also in the "cfg80211_bss_expire" function, so that the check for whether the BSS still is in the list works correctly in cfg80211_unlink_bss. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | cfg80211:: fix possible NULL pointer dereferenceMariusz Kozlowski2011-03-281-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In cfg80211_inform_bss_frame() wiphy is first dereferenced on privsz initialisation and then it is checked for NULL. This patch fixes that. Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | mac80211: fix possible NULL pointer dereferenceMariusz Kozlowski2011-03-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves 'key' dereference after BUG_ON(!key) so that when key is NULL we will see proper trace instead of oops. Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | mac80211: fix NULL pointer dereference in ieee80211_key_alloc()Petr Štetiar2011-03-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ieee80211_key struct can be kfree()d several times in the function, for example if some of the key setup functions fails beforehand, but there's no check if the struct is still valid before we call memcpy() and INIT_LIST_HEAD() on it. In some cases (like it was in my case), if there's missing aes-generic module it could lead to the following kernel OOPS: Unable to handle kernel NULL pointer dereference at virtual address 0000018c .... PC is at memcpy+0x80/0x29c ... Backtrace: [<bf11c5e4>] (ieee80211_key_alloc+0x0/0x234 [mac80211]) from [<bf1148b4>] (ieee80211_add_key+0x70/0x12c [mac80211]) [<bf114844>] (ieee80211_add_key+0x0/0x12c [mac80211]) from [<bf070cc0>] (__cfg80211_set_encryption+0x2a8/0x464 [cfg80211]) Signed-off-by: Petr Štetiar <ynezz@true.cz> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | mac80211: fix a crash in minstrel_ht in HT mode with no supported MCS ratesFelix Fietkau2011-03-281-7/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a client connects in HT mode but does not provide any valid MCS rates, the function that finds the next sample rate gets stuck in an infinite loop. Fix this by falling back to legacy rates if no usable MCS rates are found. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | Bluetooth: Fix warning with hci_cmd_timerThomas Gleixner2011-03-241-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After we made debugobjects working again, we got the following: WARNING: at lib/debugobjects.c:262 debug_print_object+0x8e/0xb0() Hardware name: System Product Name ODEBUG: free active (active state 0) object type: timer_list hint: hci_cmd_timer+0x0/0x60 Pid: 2125, comm: dmsetup Tainted: G W 2.6.38-06707-gc62b389 #110375 Call Trace: [<ffffffff8104700a>] warn_slowpath_common+0x7a/0xb0 [<ffffffff810470b6>] warn_slowpath_fmt+0x46/0x50 [<ffffffff812d3a5e>] debug_print_object+0x8e/0xb0 [<ffffffff81bd8810>] ? hci_cmd_timer+0x0/0x60 [<ffffffff812d4685>] debug_check_no_obj_freed+0x125/0x230 [<ffffffff810f1063>] ? check_object+0xb3/0x2b0 [<ffffffff810f3630>] kfree+0x150/0x190 [<ffffffff81be4d06>] ? bt_host_release+0x16/0x20 [<ffffffff81be4d06>] bt_host_release+0x16/0x20 [<ffffffff813a1907>] device_release+0x27/0xa0 [<ffffffff812c519c>] kobject_release+0x4c/0xa0 [<ffffffff812c5150>] ? kobject_release+0x0/0xa0 [<ffffffff812c61f6>] kref_put+0x36/0x70 [<ffffffff812c4d37>] kobject_put+0x27/0x60 [<ffffffff813a21f7>] put_device+0x17/0x20 [<ffffffff81bda4f9>] hci_free_dev+0x29/0x30 [<ffffffff81928be6>] vhci_release+0x36/0x70 [<ffffffff810fb366>] fput+0xd6/0x1f0 [<ffffffff810f8fe6>] filp_close+0x66/0x90 [<ffffffff810f90a9>] sys_close+0x99/0xf0 [<ffffffff81d4c96b>] system_call_fastpath+0x16/0x1b That timer was introduced with commit 6bd32326cda(Bluetooth: Use proper timer for hci command timout) Timer seems to be running when the thing is closed. Removing the timer unconditionally fixes the problem. And yes, it needs to be fixed before the HCI_UP check. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
| | * | Bluetooth: delete hanging L2CAP channelAndrei Emeltchenko2011-03-241-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes L2CAP connection remains hanging. Make sure that L2CAP channel is deleted. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
| | * | Bluetooth: Fix missing hci_dev_lock_bh in user_confirm_replyJohan Hedberg2011-03-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code was correctly calling _unlock at the end of the function but there was no actual _lock call anywhere. Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
| | * | Bluetooth: Fix HCI_RESET command synchronizationGustavo F. Padovan2011-03-242-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can't send new commands before a cmd_complete for the HCI_RESET command shows up. Reported-by: Mikko Vinni <mmvinni@yahoo.com> Reported-by: Justin P. Mattock <justinmattock@gmail.com> Reported-by: Ed Tomlinson <edt@aei.ca> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Tested-by: Justin P. Mattock <justinmattock@gmail.com> Tested-by: Mikko Vinni <mmvinni@yahoo.com> Tested-by: Ed Tomlinson <edt@aei.ca>
| | * | Bluetooth: Increment unacked_frames count only the first transmitSuraj Sumangala2011-03-241-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch lets 'l2cap_pinfo.unacked_frames' be incremented only the first time a frame is transmitted. Previously it was being incremented for retransmitted packets too resulting the value to cross the transmit window size. Signed-off-by: Suraj Sumangala <suraj@atheros.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
| * | | appletalk: Fix OOPS in atalk_release().David S. Miller2011-04-011-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 60d9f461a20ba59219fdcdc30cbf8e3a4ad3f625 ("appletalk: remove the BKL") added a dereference of "sk" before checking for NULL in atalk_release(). Guard the code block completely, rather than partially, with the NULL check. Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | vlan: convert VLAN devices to use ndo_fix_features()Michał Mirosław2011-04-032-42/+16Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Note: get_flags was actually broken, because it should return the flags capped with vlan_features. This is now done implicitly by limiting netdev->hw_features. RX checksumming offload control is (and was) broken, as there was no way before to say whether it's done for tagged packets. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | net: Call netdev_features_change() from netdev_update_features()Michał Mirosław2011-04-032-9/+20
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | Issue FEAT_CHANGE notification when features are changed by netdev_update_features(). This will allow changes made by extra constraints on e.g. MTU change to be properly propagated like changes via ethtool. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | ipv4: Use flowi4_init_output() in udp_sendmsg()David S. Miller2011-03-311-12/+6Star
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | ipv4: Use flowi4_init_output() in cookie_v4_check()David S. Miller2011-03-311-11/+7Star
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | ipv4: Use flowi4_init_output() in raw_sendmsg()David S. Miller2011-03-311-11/+7Star
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | ipv4: Use flowi4_init_output() in ip_send_reply()David S. Miller2011-03-311-10/+8Star
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | ipv4: Use flowi4_init_output() in inet_connection_sock.cDavid S. Miller2011-03-311-12/+6Star
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | fib: add __rcu annotationsEric Dumazet2011-03-311-45/+58
|/ / | | | | | | | | | | | | | | | | | | | | | | Add __rcu annotations and lockdep checks. Add const qualifiers node_parent() and node_parent_rcu() can use rcu_dereference_index_check() Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sctp: Pass __GFP_NOWARN to hash table allocation attempts.David S. Miller2011-03-311-2/+2
| | | | | | | | | | | | | | | | | | | | Like DCCP and other similar pieces of code, there are mechanisms here to try allocating smaller hash tables if the allocation fails. So pass in __GFP_NOWARN like the others do instead of emitting a scary message. Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | fib: add rtnl locking in ip_fib_net_exitEric Dumazet2011-03-311-0/+2
| | | | | | | | | | | | | | | | | | Daniel J Blueman reported a lockdep splat in trie_firstleaf(), caused by RTNL being not locked before a call to fib_table_flush() Reported-by: Daniel J Blueman <daniel.blueman@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | atm/solos-pci: Don't flap VCs when carrier state changesPhilip A. Prindeville2011-03-311-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't flap VCs when carrier state changes; higher-level protocols can detect loss of connectivity and act accordingly. This is more consistent with how other network interfaces work. We no longer use release_vccs() so we can delete it. release_vccs() was duplicated from net/atm/common.c; make the corresponding function exported, since other code duplicates it and could leverage it if it were public. Signed-off-by: Philip A. Prindeville <philipp@redfish-solutions.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | netdev: fix mtu check when TSO is enabledDaniel Lezcano2011-03-301-2/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case the device where is coming from the packet has TSO enabled, we should not check the mtu size value as this one could be bigger than the expected value. This is the case for the macvlan driver when the lower device has TSO enabled. The macvlan inherit this feature and forward the packets without fragmenting them. Then the packets go through dev_forward_skb and are dropped. This patch fix this by checking TSO is not enabled when we want to check the mtu size. Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: mcast snooping, fix length check of snooped MLDv1/2Linus Lüssing2011-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "len = ntohs(ip6h->payload_len)" does not include the length of the ipv6 header itself, which the rest of this function assumes, though. This leads to a length check less restrictive as it should be in the following line for one thing. For another, it very likely leads to an integer underrun when substracting the offset and therefore to a very high new value of 'len' due to its unsignedness. This will ultimately lead to the pskb_trim_rcsum() practically never being called, even in the cases where it should. Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: gre: provide multicast mappings for ipv4 and ipv6Timo Teräs2011-03-302-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | My commit 6d55cb91a0020ac0 (gre: fix hard header destination address checking) broke multicast. The reason is that ip_gre used to get ipgre_header() calls with zero destination if we have NOARP or multicast destination. Instead the actual target was decided at ipgre_tunnel_xmit() time based on per-protocol dissection. Instead of allowing the "abuse" of ->header() calls with invalid destination, this creates multicast mappings for ip_gre. This also fixes "ip neigh show nud noarp" to display the proper multicast mappings used by the gre device. Reported-by: Doug Kehn <rdkehn@yahoo.com> Signed-off-by: Timo Teräs <timo.teras@iki.fi> Acked-by: Doug Kehn <rdkehn@yahoo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | bridge: Fix compilation warning in function br_stp_recalculate_bridge_id()Balaji G2011-03-301-1/+1
| | | | | | | | | | | | | | | | | | net/bridge/br_stp_if.c: In function ‘br_stp_recalculate_bridge_id’: net/bridge/br_stp_if.c:216:3: warning: ‘return’ with no value, in function returning non-void Signed-off-by: G.Balaji <balajig81@gmail.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2011-03-2923-124/+201
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (30 commits) xfrm: Restrict extended sequence numbers to esp xfrm: Check for esn buffer len in xfrm_new_ae xfrm: Assign esn pointers when cloning a state xfrm: Move the test on replay window size into the replay check functions netdev: bfin_mac: document TE setting in RMII modes drivers net: Fix declaration ordering in inline functions. cxgb3: Apply interrupt coalescing settings to all queues net: Always allocate at least 16 skb frags regardless of page size ipv4: Don't ip_rt_put() an error pointer in RAW sockets. net: fix ethtool->set_flags not intended -EINVAL return value mlx4_en: Fix loss of promiscuity tg3: Fix inline keyword usage tg3: use <linux/io.h> and <linux/uaccess.h> instead <asm/io.h> and <asm/uaccess.h> net: use CHECKSUM_NONE instead of magic number Net / jme: Do not use legacy PCI power management myri10ge: small rx_done refactoring bridge: notify applications if address of bridge device changes ipv4: Fix IP timestamp option (IPOPT_TS_PRESPEC) handling in ip_options_echo() can: c_can: Fix tx_bytes accounting can: c_can_platform: fix irq check in probe ...
| * | xfrm: Restrict extended sequence numbers to espSteffen Klassert2011-03-291-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IPsec extended sequence numbers are fully implemented just for esp. So restrict the usage to esp until other protocols have support too. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | xfrm: Check for esn buffer len in xfrm_new_aeSteffen Klassert2011-03-291-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In xfrm_new_ae() we may overwrite the allocated esn replay state buffer with a wrong size. So check that the new size matches the original allocated size and return an error if this is not the case. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | xfrm: Assign esn pointers when cloning a stateSteffen Klassert2011-03-291-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we clone a xfrm state we have to assign the replay_esn and the preplay_esn pointers to the state if we use the new replay detection method. To this end, we add a xfrm_replay_clone() function that allocates memory for the replay detection and takes over the necessary values from the original state. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | xfrm: Move the test on replay window size into the replay check functionsSteffen Klassert2011-03-292-3/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As it is, the replay check is just performed if the replay window of the legacy implementation is nonzero. So we move the test on a nonzero replay window inside the replay check functions to be sure we are testing for the right implementation. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | ipv4: Don't ip_rt_put() an error pointer in RAW sockets.David S. Miller2011-03-291-0/+1
| | | | | | | | | | | | | | | Reported-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: fix ethtool->set_flags not intended -EINVAL return valueStanislaw Gruszka2011-03-281-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit d5dbda23804156ae6f35025ade5307a49d1db6d7 "ethtool: Add support for vlan accleration.", drivers that have NETIF_F_HW_VLAN_TX, and/or NETIF_F_HW_VLAN_RX feature, but do not allow enable/disable vlan acceleration via ethtool set_flags, always return -EINVAL from that function. Fix by returning -EINVAL only if requested features do not match current settings and can not be changed by driver. Change any driver that define ethtool->set_flags to use ethtool_invalid_flags() to avoid similar problems in the future (also on drivers that do not have the problem). Tested with modified (to reproduce this bug) myri10ge driver. Cc: stable@kernel.org # 2.6.37+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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