search for: network_alloc_rx_buff

Hello! I''m working on a guest OS port which uses NetBSD drivers, and I''m currently working on the netfront support. I''m basing the driver on the FreeBSD 7.0 driver, and I''ve run into a problem in network_alloc_rx_buffers. Parts of the code with line numbers is given below, and I''ll try to explain where the problem occurs. The basic problem is that the hypercall on line 112 below fails because Xen is handed the page number -1. 1 static void 2 network_alloc_rx_buffers(struct netfront_info *sc) 3...

...ext part -------------- ------------[ cut here ]------------ kernel BUG at drivers/xen/netfront/netfront.c:717! invalid opcode: 0000 [#1] SMP Modules linked in: ext3 jbd mbcache processor CPU: 0 EIP: 0061:[<c0211489>] Not tainted VLI EFLAGS: 00010082 (2.6.18-1-xen-686 #1) EIP is at network_alloc_rx_buffers+0x198/0x3bb eax: 00000000 ebx: c3db6d80 ecx: 00002c86 edx: c0de0000 esi: c0de02c0 edi: c0de3150 ebp: c39e8838 esp: c0397f2c ds: 007b es: 007b ss: 0069 Process xenwatch (pid: 7, ti=c0396000 task=c0393ab0 task.ti=c0396000) Stack: c0de0000 00000000 00000100 00000209 c2c86000 000000c...

...migration I call this: void network_resume(void) { struct net_device* dev = __dev_get_by_name("eth0"); MOD_DEC_USE_COUNT; network_open(dev); } -- which works fine. However, in network_open() the call to NETOP_RESET_RINGS seems to clear all the pointers to the old skbs, and network_alloc_rx_buffers() allocs a bunch of new ones. It suppose that means I have just leaked a whole bunch of skbs. I know the standard suspend/resume code performs almost a full ifup/ifdown (which I cannot do in my case) but I don''t see any skb-freeing code in that case either? I have tried dev_kfree_skb()...

Some users are hitting this panic in network_alloc_rx_buffers() when running a big network intensive app: /* Check return status of HYPERVISOR_dom_mem_op(). */ if ( rx_mcl[nr_pfns].args[5] != nr_pfns ) panic("Unable to reduce memory reservation\n"); I''m not clear on what is happening here. Are the domains changing size...

...^MCall Trace: ^M <e10fe150> netif_int+0x24/0x66 [xennet] <c043a57d> handle_IRQ_event+0x42/0x85 ^M <c043a64d> __do_IRQ+0x8d/0xdc <c040665a> do_IRQ+0x1a/0x25 ^M <c0519efd> evtchn_do_upcall+0x66/0x9f <c0404d79> hypervisor_callback+0x3d/0x48 ^M <e10fd9ca> network_alloc_rx_buffers+0x2c3/0x30b [xennet] <e10fe9ac> netif_poll+0x639/0x784 [xennet] ^M <c055a3c5> net_rx_action+0xcd/0x1fe <c041d5bb> __do_softirq+0x70/0xef ^M <c041d67a> do_softirq+0x40/0x67 <c040665f> do_IRQ+0x1f/0x25 ^M <c0519efd> evtchn_do_upcall+0x66/0x9f <c0404d79&g...

Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-rc7 + your patches + the last batch of pv_ops patches I posted. This patch generally restricts itself to Xen-specific parts of the tree, though it does make a few small changes elsewhere. These patches include: - some helper routines for allocating address space and walking pagetables - Xen

Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-rc7 + your patches + the last batch of pv_ops patches I posted. This patch generally restricts itself to Xen-specific parts of the tree, though it does make a few small changes elsewhere. These patches include: - some helper routines for allocating address space and walking pagetables - Xen

Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21 + 2.6.21-070428-1 + the patches I've posted over the last couple of days. Changes since the last posting: - update per review comments - comment each file - comment barrier use - use common cpu sibling setup - fixed a few minor bugs, specifically a traceirq mismatch warning - some

Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21 + 2.6.21-070428-1 + the patches I've posted over the last couple of days. Changes since the last posting: - update per review comments - comment each file - comment barrier use - use common cpu sibling setup - fixed a few minor bugs, specifically a traceirq mismatch warning - some

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual

Hi Andi, This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual

Hi Andi, This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console