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Add DTrace script to monitor viona activity
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‎scripts/README.md‎

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- `vm_exit_codes.d`: Measure VM exits and information about them both for
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#VMEXIT events and returns to Propolis.
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- `cpuid-queries.d`: Report guest CPUID queries and returned leaves.
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- `viona.d`: Report Viona ioctl and notification events in real time.

‎scripts/viona.d‎

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#!/usr/sbin/dtrace -qCs
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#pragma D option quiet
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/*
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* Dtrace ioctl calls into the viona kernel module as they occur, and show
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* in-kernel ring notifications.
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*
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* This script needs the `viona` module to be loaded. If you want to run it
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* before starting a VM utter: `modload /usr/kernel/drv/amd64/viona`
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*/
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#define VNA_IOC (('V' << 16)|('C' << 8))
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#define VNA_IOC_CREATE (VNA_IOC | 0x01)
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#define VNA_IOC_DELETE (VNA_IOC | 0x02)
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#define VNA_IOC_VERSION (VNA_IOC | 0x03)
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#define VNA_IOC_DEFAULT_PARAMS (VNA_IOC | 0x04)
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#define VNA_IOC_RING_INIT (VNA_IOC | 0x10)
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#define VNA_IOC_RING_RESET (VNA_IOC | 0x11)
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#define VNA_IOC_RING_KICK (VNA_IOC | 0x12)
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#define VNA_IOC_RING_SET_MSI (VNA_IOC | 0x13)
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#define VNA_IOC_RING_INTR_CLR (VNA_IOC | 0x14)
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#define VNA_IOC_RING_SET_STATE (VNA_IOC | 0x15)
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#define VNA_IOC_RING_GET_STATE (VNA_IOC | 0x16)
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#define VNA_IOC_RING_PAUSE (VNA_IOC | 0x17)
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#define VNA_IOC_RING_INIT_MODERN (VNA_IOC | 0x18)
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#define VNA_IOC_INTR_POLL (VNA_IOC | 0x20)
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#define VNA_IOC_SET_FEATURES (VNA_IOC | 0x21)
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#define VNA_IOC_GET_FEATURES (VNA_IOC | 0x22)
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#define VNA_IOC_SET_NOTIFY_IOP (VNA_IOC | 0x23)
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#define VNA_IOC_SET_PROMISC (VNA_IOC | 0x24)
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#define VNA_IOC_GET_PARAMS (VNA_IOC | 0x25)
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#define VNA_IOC_SET_PARAMS (VNA_IOC | 0x26)
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#define VNA_IOC_GET_MTU (VNA_IOC | 0x27)
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#define VNA_IOC_SET_MTU (VNA_IOC | 0x28)
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#define VNA_IOC_SET_NOTIFY_MMIO (VNA_IOC | 0x29)
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#define VNA_IOC_INTR_POLL_MQ (VNA_IOC | 0x2a)
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#define VNA_IOC_GET_PAIRS (VNA_IOC | 0x30)
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#define VNA_IOC_SET_PAIRS (VNA_IOC | 0x31)
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#define VNA_IOC_GET_USEPAIRS (VNA_IOC | 0x32)
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#define VNA_IOC_SET_USEPAIRS (VNA_IOC | 0x33)
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BEGIN {
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printf("Tracing...\n");
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}
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viona_ioctl:entry {
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self->dptr = arg2;
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self->rvp = args[5];
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}
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viona_ioctl:entry/arg1 == VNA_IOC_CREATE/ {
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self->cmd = "CREATE";
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create = (vioc_create_t *)copyin(arg2, sizeof (vioc_create_t));
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printf("%s (link 0x%x)\n", self->cmd, create->c_linkid);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_DELETE/ {
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self->cmd = "DELETE";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_VERSION/ {
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self->pending = arg1;
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}
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viona_ioctl:return/self->pending == VNA_IOC_VERSION/ {
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printf("VERSION 0x%x\n", *self->rvp);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_DEFAULT_PARAMS/ {
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self->cmd = "DEFAULT_PARAMS";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_INIT/ {
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self->cmd = "RING_INIT";
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init = (vioc_ring_init_t *)copyin(arg2, sizeof (vioc_ring_init_t));
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printf("%s 0x%x %x %x\n", self->cmd,
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init->ri_index, init->ri_qaddr, init->ri_qsize);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_INIT_MODERN/ {
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self->cmd = "RING_INIT_MODERN";
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initm = (vioc_ring_init_modern_t *)copyin(arg2,
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sizeof (vioc_ring_init_modern_t));
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printf("%s 0x%x %x/%x/%x %x\n", self->cmd,
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initm->rim_index, initm->rim_qaddr_desc, initm->rim_qaddr_avail,
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initm->rim_qaddr_used, initm->rim_qsize);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_RESET/ {
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self->cmd = "RING_RESET";
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printf("%s 0x%x\n", self->cmd, arg2);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_KICK/ {
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self->cmd = "RING_KICK";
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printf("%s 0x%x\n", self->cmd, arg2);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_SET_MSI/ {
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self->cmd = "RING_SET_MSI";
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msi = (vioc_ring_msi_t *)copyin(arg2, sizeof (vioc_ring_msi_t));
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printf("%s 0x%x addr=%x msg=%x\n", self->cmd,
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msi->rm_index, msi->rm_addr, msi->rm_msg);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_INTR_CLR/ {
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self->cmd = "RING_INTR_CLR";
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printf("%s 0x%x\n", self->cmd, arg2);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_SET_STATE/ {
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self->cmd = "RING_SET_STATE";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_GET_STATE/ {
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self->pending = arg1;
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}
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viona_ioctl:return/self->pending == VNA_IOC_RING_GET_STATE/ {
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self->pending = 0;
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statep = (vioc_ring_state_t *)copyin(self->dptr,
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sizeof (vioc_ring_state_t));
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printf("GET_STATE %x %x/%x/%x AV %x USED %x\n",
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statep->vrs_index, statep->vrs_qaddr_desc, statep->vrs_qaddr_avail,
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statep->vrs_qaddr_used, statep->vrs_avail_idx,
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statep->vrs_used_idx);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_RING_PAUSE/ {
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self->cmd = "RING_PAUSE";
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printf("%s 0x%x\n", self->cmd, arg2);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_INTR_POLL_MQ/ {
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self->pending = arg1;
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}
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viona_ioctl:return/self->pending == VNA_IOC_INTR_POLL_MQ/ {
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self->pending = 0;
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intrp = (vioc_intr_poll_mq_t *)copyin(self->dptr,
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sizeof (vioc_intr_poll_mq_t));
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printf("INTR_POLL %x set (0x%08x)\n", *self->rvp,
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intrp->vipm_status[0]);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_FEATURES/ {
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self->cmd = "SET_FEATURES";
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featp = (uint64_t *)copyin(arg2, sizeof (uint64_t));
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printf("%s 0x%x\n", self->cmd, *featp);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_GET_FEATURES/ {
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self->pending = arg1;;
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}
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viona_ioctl:return/self->pending == VNA_IOC_GET_FEATURES/ {
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self->pending = 0;
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gfeatp = (uint64_t *)copyin(self->dptr, sizeof (uint64_t));
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printf("GET_FEATURES 0x%x\n", *gfeatp);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_NOTIFY_IOP/ {
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self->cmd = "SET_NOTIFY_IOP";
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printf("%s 0x%x\n", self->cmd, arg2);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_PROMISC/ {
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self->cmd = "SET_PROMISC";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_GET_PARAMS/ {
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self->cmd = "GET_PARAMS";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_PARAMS/ {
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self->cmd = "SET_PARAMS";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_GET_MTU/ {
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self->cmd = "GET_MTU";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_MTU/ {
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self->cmd = "SET_MTU";
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printf("%s %u\n", self->cmd, arg2);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_NOTIFY_MMIO && !arg2/ {
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self->cmd = "SET_NOTIFY_MMIO <NULL>";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_NOTIFY_MMIO && arg2/ {
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self->cmd = "SET_NOTIFY_MMIO";
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mmio = (vioc_notify_mmio_t *)copyin(arg2, sizeof (vioc_notify_mmio_t));
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printf("%s %x+%x\n", self->cmd, mmio->vim_address, mmio->vim_size);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_GET_PAIRS/ {
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self->cmd = "GET_PAIRS";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_PAIRS/ {
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self->cmd = "SET_PAIRS";
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printf("%s 0x%x\n", self->cmd, arg2);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_GET_USEPAIRS/ {
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self->cmd = "GET_USEPAIRS";
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printf("%s\n", self->cmd);
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}
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viona_ioctl:entry/arg1 == VNA_IOC_SET_USEPAIRS/ {
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self->cmd = "SET_USEPAIRS";
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printf("%s 0x%x\n", self->cmd, arg2);
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}
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viona_notify_iop:entry/arg1/ {
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printf("IOP NOTIFY read %x+%x\n", arg2, arg3);
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}
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viona_notify_iop:entry/!arg1/ {
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printf("IOP NOTIFY write %x+%x = %x\n", arg2, arg3, *args[4]);
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}
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viona_notify_mmio:entry/!arg1/ {
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printf("MMIO NOTIFY read %x+%x\n", arg2, arg3);
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}
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viona_notify_mmio:entry/arg1/ {
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printf("MMIO NOTIFY write %x+%x = %x\n", arg2, arg3, *args[4]);
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}
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viona_ioctl:return/self->cmd != 0 && arg1 != 0/ {
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printf("ioctl(%s) returning 0x%x\n", self->cmd, arg1);
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self->cmd = 0;
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}
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