vmstate_pvrdma describes the PCI and MSIX states as well as the dma address for dsr and the gid table of device. vmstate_pvrdma_gids describes each gid in the gid table.
pvrdma_post_save() does the job of unregistering gid entries from the backend device in the source host. pvrdma_post_load() maps to dsr using the loaded dma address, registers each loaded gid into the backend device, and finally calls load_dsr() to perform other mappings and ring init operations. Cc: Marcel Apfelbaum <marcel.apfelb...@gmail.com> Cc: Yuval Shaia <yuval.sh...@oracle.com> Signed-off-by: Sukrit Bhatnagar <skrtbht...@gmail.com> --- hw/rdma/vmw/pvrdma_main.c | 77 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) diff --git a/hw/rdma/vmw/pvrdma_main.c b/hw/rdma/vmw/pvrdma_main.c index 6c90db96f9..6f8b56dea3 100644 --- a/hw/rdma/vmw/pvrdma_main.c +++ b/hw/rdma/vmw/pvrdma_main.c @@ -28,6 +28,7 @@ #include "sysemu/sysemu.h" #include "monitor/monitor.h" #include "hw/rdma/rdma.h" +#include "migration/register.h" #include "../rdma_rm.h" #include "../rdma_backend.h" @@ -593,6 +594,81 @@ static void pvrdma_shutdown_notifier(Notifier *n, void *opaque) pvrdma_fini(pci_dev); } +static int pvrdma_post_save(void *opaque) +{ + int i, rc; + PVRDMADev *dev = opaque; + + for (i = 0; i < MAX_GIDS; i++) { + + if (!dev->rdma_dev_res.port.gid_tbl[i].gid.global.interface_id) { + continue; + } + rc = rdma_backend_del_gid(&dev->backend_dev, + dev->backend_eth_device_name, + &dev->rdma_dev_res.port.gid_tbl[i].gid); + if (rc) { + return -EINVAL; + } + } + + return 0; +} + +static int pvrdma_post_load(void *opaque, int version_id) +{ + int i, rc; + PVRDMADev *dev = opaque; + PCIDevice *pci_dev = PCI_DEVICE(dev); + DSRInfo *dsr_info = &dev->dsr_info; + + dsr_info->dsr = rdma_pci_dma_map(pci_dev, dsr_info->dma, + sizeof(struct pvrdma_device_shared_region)); + if (!dsr_info->dsr) { + rdma_error_report("Failed to map to DSR"); + return -ENOMEM; + } + + for (i = 0; i < MAX_GIDS; i++) { + + if (!dev->rdma_dev_res.port.gid_tbl[i].gid.global.interface_id) { + continue; + } + + rc = rdma_backend_add_gid(&dev->backend_dev, + dev->backend_eth_device_name, + &dev->rdma_dev_res.port.gid_tbl[i].gid); + if (rc) { + return -EINVAL; + } + } + + return load_dsr(dev); +} + +static const VMStateDescription vmstate_pvrdma_gids = { + .name = "pvrdma-gids", + .fields = (VMStateField[]) { + VMSTATE_UINT8_ARRAY_V(gid.raw, RdmaRmGid, 16, 0), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_pvrdma = { + .name = PVRDMA_HW_NAME, + .post_save = pvrdma_post_save, + .post_load = pvrdma_post_load, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj, PVRDMADev), + VMSTATE_MSIX(parent_obj, PVRDMADev), + VMSTATE_UINT64(dsr_info.dma, PVRDMADev), + VMSTATE_STRUCT_ARRAY(rdma_dev_res.port.gid_tbl, PVRDMADev, + MAX_PORT_GIDS, 0, vmstate_pvrdma_gids, + RdmaRmGid), + VMSTATE_END_OF_LIST() + } +}; + static void pvrdma_realize(PCIDevice *pdev, Error **errp) { int rc = 0; @@ -688,6 +764,7 @@ static void pvrdma_class_init(ObjectClass *klass, void *data) dc->desc = "RDMA Device"; dc->props = pvrdma_dev_properties; + dc->vmsd = &vmstate_pvrdma; set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); ir->print_statistics = pvrdma_print_statistics; -- 2.21.0