Hi Jan,
We are trying to establish the connection between root cell to non-root cell
on x86 using ivshmem-net driver.
we did below modifications in root cell and non root cell configurations.
// PCI device
{
.type = JAILHOUSE_PCI_TYPE_IVSHMEM,
.domain = 0x0,
.bdf = 0x0e << 3,
.bar_mask = {
0xffffff00, 0xffffffff, 0x00000000,
0x00000000, 0xffffffe0, 0xffffffff,
},
.num_msix_vectors = 1,
.shmem_region = 3,
.shmem_protocol = JAILHOUSE_SHMEM_PROTO_VETH,
},
/* MemRegion: 404100000 : IVSHMEM :JH-added */
{
.phys_start = 0x404100000,
.virt_start = 0x404100000,
.size = 0x100000,
.flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
JAILHOUSE_MEM_ROOTSHARED,
},
After adding above changes, we are able to see the virtual network interface in
non-root cell but it is not working(ping is not happening and we are not able
to see the interrupts).
I am adding below logs for your reference.
[root@localhost ~]# cat /proc/iomem
.....
0000000100000000-00000001000000ff : ivshmem-net
0000000100000100-000000010000011f : 0000:00:0e.0
0000000404100000-00000004041fffff : ivshmem-net
.....
[root@localhost ~]# cat /proc/interrupts
CPU0 CPU1
4: 1271 0 IO-APIC-4-fasteoi serial
24: 404 0 PCI-MSI-524288-edge enp1s0f0
25: 0 0 PCI-MSI-229376-edge ivshmem-net[0000:00:0e.0]
[rooot@localhost ~]# lspci -s 0e -vvv
00:0e.0 Unassigned class [ff01]: Red Hat, Inc Inter-VM shared memory
Subsystem: Red Hat, Inc Inter-VM shared memory
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: Memory at 100000000 (64-bit, non-prefetchable) [size=256]
Region 4: Memory at 100000100 (64-bit, non-prefetchable) [size=32]
Capabilities: [50] MSI-X: Enable+ Count=1 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00000010
Kernel driver in use: ivshmem-net
lspci: Unable to load libkmod resources: error -12
[root@localhost ~]# ifconfig -a
enp0s14: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 16384
inet 192.168.1.55 netmask 255.255.0.0 broadcast 192.168.255.255
ether 9a:28:41:e8:3b:14 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp1s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.35 netmask 255.255.0.0 broadcast 192.168.255.255
inet6 fe80::21b:78ff:fe56:abec prefixlen 64 scopeid 0x20<link>
ether 00:1b:78:56:ab:ec txqueuelen 1000 (Ethernet)
RX packets 457 bytes 46827 (45.7 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7 bytes 596 (596.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 11 memory 0xc72a0000-c72c0000
Can you please help us to resolve.
we have below points which we need some input
a. we want to know are we missing any configuration?
b. we used external NIC and configured to non rootcell. should we assign any
physical NIC to non rootcell to make virtual network interface working?
c.we didn't see that increment in interrupt count. Are we missing any thing
here?
Regards,
Anil
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