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* qlcnic: add loopback diagnostic testAmit Kumar Salecha2010-02-035-10/+225
| | | | | | | | | | | | Loopback test (offline) added in ethtool self test. o Set device in loopback mode o Send packets o Process receive packets in qlcnic_process_rcv_ring_diag() o Compare packets o Reset device in normal mode. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlcnic: add interrupt diagnostic testAmit Kumar Salecha2010-02-034-16/+154
| | | | | | | | | | Interrupt test (offline) added in ethtool self test. Register a temporary interrupt handler and then send command to fw to raise an interrupt. Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlcnic: support LED blink for device identificationSucheta Chakraborty2010-02-033-0/+49
| | | | | | | | Added support of device identification by blinking LED for specified time. Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlcnic: protect resoruce cleanup by rtnl lockAmit Kumar Salecha2010-02-032-3/+5
| | | | | | | | | | | | o context resources can be in used, while resoruce cleanup is in progress, during fw recover. o Null pointer execption can occur in send_cmd_desc, if fw recovery module frees tx ring without rtnl lock. o Same applies to ethtool register dump and FW health registers should be dump in any case. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlcnic: clear device reset state after fw recoveryAmit Kumar Salecha2010-02-031-1/+21
| | | | | | | | o After firmware recovery, clear device reset state transition register. Otherwise firmware reload can occur unnecessary. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlcnic: add ethernet identifier in board infoAmit Kumar Salecha2010-02-031-3/+7
| | | | | | | | | Added missing identifier that distinguishes between FCOE/ISCSI/ETHERNET functions. Signed-off-by: Rajesh K Borundia <rajesh.borundia@qlogic.com> Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlcnic: use DEFINE_PCI_DEVICE_TABLEAmit Kumar Salecha2010-02-031-1/+1
| | | | | | | | Use DEFINE_PCI_DEVICE_TABLE() so we get place PCI ids table into correct section in every case. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sky2: Fix TX_MAP_PAGE misspellingJarek Poplawski2010-02-031-1/+1
| | | | | | | | | Btw of the dma-debug problem reported by Michael Breuer I spotted a tiny misspelling in TX_MAP_PAGE definition introduced by commit 6b84dacadbdc3. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* virtio_net: Defer skb allocation in receive path Date: Wed, 13 Jan 2010 ↵Shirley Ma2010-02-031-179/+248
| | | | | | | | | | | | | | | | 12:53:38 -0800 virtio_net receives packets from its pre-allocated vring buffers, then it delivers these packets to upper layer protocols as skb buffs. So it's not necessary to pre-allocate skb for each mergable buffer, then frees extra skbs when buffers are merged into a large packet. This patch has deferred skb allocation in receiving packets for both big packets and mergeable buffers to reduce skb pre-allocations and skb frees. It frees unused buffers by calling detach_unused_buf in vring, so recv skb queue is not needed. Signed-off-by: Shirley Ma <xma@us.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* virtio: Add ability to detach unused buffers from vringsShirley Ma2010-02-032-0/+29
| | | | | | | | | | | | There's currently no way for a virtio driver to ask for unused buffers, so it has to keep a list itself to reclaim them at shutdown. This is redundant, since virtio_ring stores that information. So add a new hook to do this. Signed-off-by: Shirley Ma <xma@us.ibm.com> Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: avoid spinlock in get_acqseq()Eric Dumazet2010-02-031-5/+4
| | | | | | | Use atomic_inc_return() in get_acqseq() to avoid taking a spinlock Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv4: ip_fragment: fix unbalanced rcu_read_unlock()Patrick McHardy2010-02-021-3/+2
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/irda: sh_sir: Add SuperH IrDA driverKuninori Morimoto2010-02-023-0/+834
| | | | | | | | This is very simple IrDA SIR driver for SuperH. This driver was tested by irdaping/ircp on SH7724 EcoVec24 board Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* igmp: fix ip_mc_sf_allow race [v5]Flavio Leitner2010-02-022-21/+64
| | | | | | | | | | Almost all igmp functions accessing inet->mc_list are protected by rtnl_lock(), but there is one exception which is ip_mc_sf_allow(), so there is a chance of either ip_mc_drop_socket or ip_mc_leave_group remove an entry while ip_mc_sf_allow is running causing a crash. Signed-off-by: Flavio Leitner <fleitner@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* can: deny filterlist access on non-CAN interfacesOliver Hartkopp2010-02-021-0/+6
| | | | | | | | | | | | | | | In commit 20dd3850bcf860561496827b711fa10fecf6e787 "can: Speed up CAN frame receiption by using ml_priv" the formerly used hlist of receiver lists for each CAN netdevice has been replaced. The hlist content ensured only CAN netdevices to be accessed by the can_rx_(un)register() functions which accidently dropped away together with the hlist receiver implementation. This patch re-introduces the check for CAN netdevices in can_rx_(un)register(). Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/xircom_cb.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-19/+25
| | | | | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Add #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt Remove DRV_NAME and xircom_cb from pr_<level> Convert embedded function names in logging messages to %s, __func__ Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/winbond-840.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-87/+90
| | | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Convert %d.%d.%d.%d to %pI4 Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/uli526x.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-19/+27
| | | | | | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Add #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt Remove DRV_NAME from logging messages Add do {} while(0) to ULI526X_DBUG macro Make SHOW_MEDIA_TYPE macro more readable Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/timer.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-27/+25
| | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/pnic2.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-29/+30
| | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/pnic.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-16/+17
| | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/media.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-38/+36
| | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/interrupt.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-47/+53
| | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/eeprom.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-23/+24
| | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/dmfe.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-36/+31
| | | | | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Add #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt Remove 'DRV_NAME ": ' from logging messages Convert commented out printks to pr_debug Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/de2104x.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-70/+68
| | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip/21142.c: Use dev_<level> and pr_<level>Joe Perches2010-02-011-37/+39
| | | | | | | | | | Convert printks to dev_<level> where a dev is available Convert printks to pr_<level> where not Coalesce format strings Change print formats with %d.dx to %0dx Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tulip_core: Use dev_<level> and pr_<level>Joe Perches2010-02-011-80/+82
| | | | | | | | | | Convert printks to dev_<level> where appropriate Convert printks to pr_<level> Change print formats with %d.dx to %0dx Coalesce long formats Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sched: add head drop fifo queueHagen Paul Pfeifer2010-01-294-0/+55
| | | | | | | | | | | | | This adds an additional queuing strategy, called pfifo_head_drop, to remove the oldest skb in the case of an overflow within the queue - the head element - instead of the last skb (tail). To remove the oldest skb in congested situations is useful for sensor network environments where newer packets reflect the superior information. Reviewed-by: Florian Westphal <fw@strlen.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: ipcomp6 supportAlexey Dobriyan2010-01-281-5/+8
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: ipcomp supportAlexey Dobriyan2010-01-281-3/+6
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: xfrm6_tunnel in netnsAlexey Dobriyan2010-01-283-62/+88
| | | | | | | | | | | | | I'm not sure about rcu stuff near kmem cache destruction: * checks for non-empty hashes look bogus, they're done _before_ rcu_berrier() * unregistering netns ops is done before kmem_cache destoy (as it should), and unregistering involves rcu barriers by itself So it looks nothing should be done. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: fixup xfrm6_tunnel error propagationAlexey Dobriyan2010-01-281-5/+11
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: merge fixup for qlge_mainStephen Rothwell2010-01-281-1/+1
| | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2010-01-2840-143/+251
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
| * bonding: bond_open error return valuestephen hemminger2010-01-281-1/+1
| | | | | | | | | | | | | | | | | | The convention for API functions in kernel is to return errno value; bond_open would return -1 if alb setup failed. The only reason that could happen is if kmalloc() failed. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ixgbe: if ixgbe_copy_dcb_cfg is going to fail learn about it earlyJohn Fastabend2010-01-281-8/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | Call ixgbe_copy_dcb_cfg() earlier in the ixgbe_dcbnl_set_all() so that we can learn if this is going to fail as early as possible. Previously, ixgbe_down or ixgbe_close were being called before this check and the IXGBE_RESETTING bit was being set and cleared. Worse if this failed the corresponding ixgbe_up/ndo_open would not called. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ixgbe: set the correct DCB bit for pg tx settingsJohn Fastabend2010-01-281-1/+1
| | | | | | | | | | | | | | | | | | Set the correct bit BIT_PG_TX when tx PG settings are set. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * igbvf: fix issue w/ mapped_as_page being left set after unmapAlexander Duyck2010-01-281-0/+1
| | | | | | | | | | | | | | | | | | | | This change fixes an issue in igbvf with mapped_as_page being left set after a page is unmapped which results in buffers which are mapped via map single being unmapped as page. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * drivers/net: ks8851_mll ethernet network driverChoi, David2010-01-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Hello David Miller, I fix a bug in ks8851_mll driver, which has existed since 2.6.32-rc6. >From : David J. Choi <david.choi@micrel.com> Fix a bug that the data pointers in the interrupt handler are set wrong, which is related with the 5th parameter of request_irq(). Signed-off-by : David J. Choi <david.choi@micrel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * be2net: Bug fix to support newer generation of BE ASICAjit Khaparde2010-01-283-3/+30
| | | | | | | | | | | | | | Bug fix in be2net for newer generation of BladeEngine ASIC. Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge branch 'master' of ↵David S. Miller2010-01-284-8/+7
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
| | * mac80211: fix NULL pointer dereference when ftrace is enabledZhu Yi2010-01-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I got below kernel oops when I try to bring down the network interface if ftrace is enabled. The root cause is drv_ampdu_action() is passed with a NULL ssn pointer in the BA session tear down case. We need to check and avoid dereferencing it in trace entry assignment. BUG: unable to handle kernel NULL pointer dereference Modules linked in: at (null) IP: [<f98fe02a>] ftrace_raw_event_drv_ampdu_action+0x10a/0x160 [mac80211] *pde = 00000000 Oops: 0000 [#1] SMP DEBUG_PAGEALLOC [...] Call Trace: [<f98fdf20>] ? ftrace_raw_event_drv_ampdu_action+0x0/0x160 [mac80211] [<f98dac4c>] ? __ieee80211_stop_rx_ba_session+0xfc/0x220 [mac80211] [<f98d97fb>] ? ieee80211_sta_tear_down_BA_sessions+0x3b/0x50 [mac80211] [<f98dc6f6>] ? ieee80211_set_disassoc+0xe6/0x230 [mac80211] [<f98dc6ac>] ? ieee80211_set_disassoc+0x9c/0x230 [mac80211] [<f98dcbb8>] ? ieee80211_mgd_deauth+0x158/0x170 [mac80211] [<f98e4bdb>] ? ieee80211_deauth+0x1b/0x20 [mac80211] [<f8987f49>] ? __cfg80211_mlme_deauth+0xe9/0x120 [cfg80211] [<f898b870>] ? __cfg80211_disconnect+0x170/0x1d0 [cfg80211] Cc: Johannes Berg <johannes@sipsolutions.net> Cc: stable@kernel.org Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * ath9k: fix eeprom INI values override for 2GHz-only cardsFelix Fietkau2010-01-251-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Among other changes, this commit: commit 06d0f0663e11cab4ec5f2c143a118d71a12fbbe9 Author: Sujith <Sujith.Manoharan@atheros.com> Date: Thu Feb 12 10:06:45 2009 +0530 ath9k: Enable Fractional N mode changed the hw attach code to fix up initialization values only for dual band devices, however the commit message did not give a reason as to why this would be useful or necessary. According to tests by Jorge Boncompte, this breaks at least some 2GHz-only cards, so the code should be changed back to the unconditional INI fixup. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Reported-by: Jorge Boncompte <jorge@dti2.net> Cc: stable@kernel.org Tested-by: Pavel Roskin <proski@gnu.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * iwlwifi: fix pointer signedness warningJohannes Berg2010-01-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a few station addresses that are char *, instead of the normal u8 *; gcc gives pointer signedness warnings for some of those, so use u8 * consistently. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * ath9k: fix beacon slot/buffer leakFelix Fietkau2010-01-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When cleaning up beacon buffers and slots, ath9k currently checks if sc->ah->opmode is set to a beacon related mode before cleaning up buffers. An unfortunate ordering of interface up/down commands can lead to sc->ah->opmode being set to monitor mode, while there are AP interfaces present on the same wiphy. Always cleaning up beacon buffers if present fixes this issue. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | starfire: clean up properly if firmware loading failsBen Hutchings2010-01-271-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | netdev_open() will return without cleaning up net device or hardware state if firmware loading fails. This results in a BUG() on a second attempt to bring the interface up, reported in <http://bugzilla.kernel.org/show_bug.cgi?id=15091>, and probably has even worse effects if the driver is removed afterwards. Call netdev_close() to clean up on failure. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=15091 Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Reported-by: Michael Moffatt <michael@moffatt.org.nz> Tested-by: Michael Moffatt <michael@moffatt.org.nz> Cc: "David S. Miller" <davem@davemloft.net> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | ipv6: conntrack: Add member of user to nf_ct_frag6_queue structureShan Wei2010-01-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 0b5ccb2(title:ipv6: reassembly: use seperate reassembly queues for conntrack and local delivery) has broken the saddr&&daddr member of nf_ct_frag6_queue when creating new queue. And then hash value generated by nf_hashfn() was not equal with that generated by fq_find(). So, a new received fragment can't be inserted to right queue. The patch fixes the bug with adding member of user to nf_ct_frag6_queue structure. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | virtio_net: Make delayed refill more reliableHerbert Xu2010-01-261-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I have seen RX stalls on a machine that experienced a suspected OOM. After the stall, the RX buffer is empty on the guest side and there are exactly 16 entries available on the host side. As the number of entries is less than that required by a maximal skb, the host cannot proceed. The guest did not have a refill job scheduled. My diagnosis is that an OOM had occured, with the delayed refill job scheduled. The job was able to allocate at least one skb, but not enough to overcome the minimum required by the host to proceed. As the refill job would only reschedule itself if it failed completely to allocate any skbs, this would lead to an RX stall. The following patch removes this stall possibility by always rescheduling the refill job until the ring is totally refilled. Testing has shown that the RX stall no longer occurs whereas previously it would occur within a day. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sfc: Use fixed-size buffers for MCDI NVRAM requestsBen Hutchings2010-01-263-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The low-level MCDI code always uses 32-bit MMIO operations, and callers must pad input and output buffers to multiples of 4 bytes. The MCDI NVRAM functions are not doing this. Also, their buffers are declared as variable-length arrays with no explicit maximum length. Switch to a fixed buffer size based on the chunk size used by the MTD driver (which is a multiple of 4). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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