kernel/git/stable/linux-stable.git/drivers/vhost/net.c, branch linux-2.6.36.y

vhost-net: fix range checking in mrg bufs case

2010-09-14T13:22:41+00:00

In mergeable buffer case, we use headcount, log_num and seg as indexes in same-size arrays, and we know that headcount <= seg and log_num equals either 0 or seg. Therefore, the right thing to do is range-check seg, not headcount as we do now: these will be different if guest chains s/g descriptors (this does not happen now, but we can not trust the guest). Long term, we should add BUG_ON checks to verify two other indexes are what we think they should be. Reported-by: Jason Wang Signed-off-by: Michael S. Tsirkin

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

2010-08-04T18:47:58+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1443 commits) phy/marvell: add 88ec048 support igb: Program MDICNFG register prior to PHY init e1000e: correct MAC-PHY interconnect register offset for 82579 hso: Add new product ID can: Add driver for esd CAN-USB/2 device l2tp: fix export of header file for userspace can-raw: Fix skb_orphan_try handling Revert "net: remove zap_completion_queue" net: cleanup inclusion phy/marvell: add 88e1121 interface mode support u32: negative offset fix net: Fix a typo from "dev" to "ndev" igb: Use irq_synchronize per vector when using MSI-X ixgbevf: fix null pointer dereference due to filter being set for VLAN 0 e1000e: Fix irq_synchronize in MSI-X case e1000e: register pm_qos request on hardware activation ip_fragment: fix subtracting PPPOE_SES_HLEN from mtu twice net: Add getsockopt support for TCP thin-streams cxgb4: update driver version cxgb4: add new PCI IDs ... Manually fix up conflicts in: - drivers/net/e1000e/netdev.c: due to pm_qos registration infrastructure changes - drivers/net/phy/marvell.c: conflict between adding 88ec048 support and cleaning up the IDs - drivers/net/wireless/ipw2x00/ipw2100.c: trivial ipw2100_pm_qos_req conflict (registration change vs marking it static)

vhost-net: mergeable buffers support

2010-07-28T12:45:36+00:00

This adds support for mergeable buffers in vhost-net: this is needed for older guests without indirect buffer support, as well as for zero copy with some devices. Includes changes by Michael S. Tsirkin to make the patch as low risk as possible (i.e., close to no changes when feature is disabled). Signed-off-by: David Stevens Signed-off-by: Michael S. Tsirkin

vhost: replace vhost_workqueue with per-vhost kthread

2010-07-28T12:44:53+00:00

Replace vhost_workqueue with per-vhost kthread. Other than callback argument change from struct work_struct * to struct vhost_work *, there's no visible change to vhost_poll_*() interface. This conversion is to make each vhost use a dedicated kthread so that resource control via cgroup can be applied. Partially based on Sridhar Samudrala's patch. * Updated to use sub structure vhost_work instead of directly using vhost_poll at Michael's suggestion. * Added flusher wake_up() optimization at Michael's suggestion. Changes by MST: * Converted atomics/barrier use to a spinlock. * Create thread on SET_OWNER * Fix flushing Signed-off-by: Tejun Heo Signed-off-by: Michael S. Tsirkin Cc: Sridhar Samudrala

vhost net: Fix warning.

2010-07-22T04:09:23+00:00

Reported by Stephen Rothwell. Signed-off-by: David S. Miller

Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

2010-07-21T01:25:24+00:00

Conflicts: drivers/vhost/net.c net/bridge/br_device.c Fix merge conflict in drivers/vhost/net.c with guidance from Stephen Rothwell. Revert the effects of net-2.6 commit 573201f36fd9c7c6d5218cdcd9948cee700b277d since net-next-2.6 has fixes that make bridge netpoll work properly thus we don't need it disabled. Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

2010-07-20T23:26:42+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (24 commits) bridge: Partially disable netpoll support tcp: fix crash in tcp_xmit_retransmit_queue IPv6: fix CoA check in RH2 input handler (mip6_rthdr_input()) ibmveth: lost IRQ while closing/opening device leads to service loss rt2x00: Fix lockdep warning in rt2x00lib_probe_dev() vhost: avoid pr_err on condition guest can trigger ipmr: Don't leak memory if fib lookup fails. vhost-net: avoid flush under lock net: fix problem in reading sock TX queue net/core: neighbour update Oops net: skb_tx_hash() fix relative to skb_orphan_try() rfs: call sock_rps_record_flow() in tcp_splice_read() xfrm: do not assume that template resolving always returns xfrms hostap_pci: set dev->base_addr during probe axnet_cs: use spin_lock_irqsave in ax_interrupt dsa: Fix Kconfig dependencies. act_nat: not all of the ICMP packets need an IP header payload r8169: incorrect identifier for a 8168dp Phonet: fix skb leak in pipe endpoint accept() Bluetooth: Update sec_level/auth_type for already existing connections ...

vhost: avoid pr_err on condition guest can trigger

2010-07-16T09:18:17+00:00

Guest can trigger packet truncation by posting a very short buffer and disabling buffer merging. Convert pr_err to pr_debug to avoid log from filling up when this happens. Signed-off-by: Michael S. Tsirkin

vhost-net: avoid flush under lock

2010-07-15T12:26:12+00:00

We flush under vq mutex when changing backends. This creates a deadlock as workqueue being flushed needs this lock as well. https://bugzilla.redhat.com/show_bug.cgi?id=612421 Drop the vq mutex before flush: we have the device mutex which is sufficient to prevent another ioctl from touching the vq. Signed-off-by: Michael S. Tsirkin

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

2010-07-08T02:56:00+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (35 commits) NET: SB1250: Initialize .owner vxge: show startup message with KERN_INFO ll_temac: Fix missing iounmaps bridge: Clear IPCB before possible entry into IP stack bridge br_multicast: BUG: unable to handle kernel NULL pointer dereference net: Fix definition of netif_vdbg() when VERBOSE_DEBUG is defined net/ne: fix memory leak in ne_drv_probe() xfrm: fix xfrm by MARK logic virtio_net: fix oom handling on tx virtio_net: do not reschedule rx refill forever s2io: resolve statistics issues linux/net.h: fix kernel-doc warnings net: decreasing real_num_tx_queues needs to flush qdisc sched: qdisc_reset_all_tx is calling qdisc_reset without qdisc_lock qlge: fix a eeh handler to not add a pending timer qlge: Replacing add_timer() to mod_timer() usbnet: Set parent device early for netdev_printk() net: Revert "rndis_host: Poll status channel before control channel" netfilter: ip6t_REJECT: fix a dst leak in ipv6 REJECT drivers: bluetooth: bluecard_cs.c: Fixed include error, changed to linux/io.h ...