337 lines
9.4 KiB
C
337 lines
9.4 KiB
C
/*
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* QTest testcase for VirtIO NIC
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*
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* Copyright (c) 2014 SUSE LINUX Products GmbH
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "libqtest-single.h"
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#include "qemu/iov.h"
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#include "qemu/module.h"
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#include "qapi/qmp/qdict.h"
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#include "hw/virtio/virtio-net.h"
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#include "libqos/qgraph.h"
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#include "libqos/virtio-net.h"
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#ifndef ETH_P_RARP
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#define ETH_P_RARP 0x8035
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#endif
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#define PCI_SLOT_HP 0x06
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#define PCI_SLOT 0x04
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#define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
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#define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)
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#ifndef _WIN32
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static void rx_test(QVirtioDevice *dev,
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QGuestAllocator *alloc, QVirtQueue *vq,
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int socket)
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{
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QTestState *qts = global_qtest;
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uint64_t req_addr;
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uint32_t free_head;
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char test[] = "TEST";
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char buffer[64];
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int len = htonl(sizeof(test));
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struct iovec iov[] = {
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{
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.iov_base = &len,
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.iov_len = sizeof(len),
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}, {
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.iov_base = test,
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.iov_len = sizeof(test),
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},
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};
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int ret;
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req_addr = guest_alloc(alloc, 64);
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free_head = qvirtqueue_add(qts, vq, req_addr, 64, true, false);
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qvirtqueue_kick(qts, dev, vq, free_head);
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ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
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g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
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qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
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QVIRTIO_NET_TIMEOUT_US);
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memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
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g_assert_cmpstr(buffer, ==, "TEST");
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guest_free(alloc, req_addr);
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}
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static void tx_test(QVirtioDevice *dev,
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QGuestAllocator *alloc, QVirtQueue *vq,
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int socket)
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{
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QTestState *qts = global_qtest;
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uint64_t req_addr;
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uint32_t free_head;
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uint32_t len;
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char buffer[64];
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int ret;
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req_addr = guest_alloc(alloc, 64);
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memwrite(req_addr + VNET_HDR_SIZE, "TEST", 4);
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free_head = qvirtqueue_add(qts, vq, req_addr, 64, false, false);
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qvirtqueue_kick(qts, dev, vq, free_head);
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qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
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QVIRTIO_NET_TIMEOUT_US);
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guest_free(alloc, req_addr);
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ret = qemu_recv(socket, &len, sizeof(len), 0);
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g_assert_cmpint(ret, ==, sizeof(len));
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len = ntohl(len);
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ret = qemu_recv(socket, buffer, len, 0);
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g_assert_cmpstr(buffer, ==, "TEST");
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}
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static void rx_stop_cont_test(QVirtioDevice *dev,
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QGuestAllocator *alloc, QVirtQueue *vq,
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int socket)
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{
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QTestState *qts = global_qtest;
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uint64_t req_addr;
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uint32_t free_head;
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char test[] = "TEST";
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char buffer[64];
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int len = htonl(sizeof(test));
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QDict *rsp;
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struct iovec iov[] = {
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{
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.iov_base = &len,
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.iov_len = sizeof(len),
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}, {
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.iov_base = test,
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.iov_len = sizeof(test),
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},
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};
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int ret;
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req_addr = guest_alloc(alloc, 64);
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free_head = qvirtqueue_add(qts, vq, req_addr, 64, true, false);
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qvirtqueue_kick(qts, dev, vq, free_head);
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rsp = qmp("{ 'execute' : 'stop'}");
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qobject_unref(rsp);
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ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
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g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
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/* We could check the status, but this command is more importantly to
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* ensure the packet data gets queued in QEMU, before we do 'cont'.
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*/
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rsp = qmp("{ 'execute' : 'query-status'}");
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qobject_unref(rsp);
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rsp = qmp("{ 'execute' : 'cont'}");
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qobject_unref(rsp);
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qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
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QVIRTIO_NET_TIMEOUT_US);
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memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
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g_assert_cmpstr(buffer, ==, "TEST");
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guest_free(alloc, req_addr);
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}
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static void send_recv_test(void *obj, void *data, QGuestAllocator *t_alloc)
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{
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QVirtioNet *net_if = obj;
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QVirtioDevice *dev = net_if->vdev;
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QVirtQueue *rx = net_if->queues[0];
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QVirtQueue *tx = net_if->queues[1];
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int *sv = data;
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rx_test(dev, t_alloc, rx, sv[0]);
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tx_test(dev, t_alloc, tx, sv[0]);
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}
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static void stop_cont_test(void *obj, void *data, QGuestAllocator *t_alloc)
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{
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QVirtioNet *net_if = obj;
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QVirtioDevice *dev = net_if->vdev;
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QVirtQueue *rx = net_if->queues[0];
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int *sv = data;
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rx_stop_cont_test(dev, t_alloc, rx, sv[0]);
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}
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#endif
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static void hotplug(void *obj, void *data, QGuestAllocator *t_alloc)
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{
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QVirtioPCIDevice *dev = obj;
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QTestState *qts = dev->pdev->bus->qts;
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const char *arch = qtest_get_arch();
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qtest_qmp_device_add(qts, "virtio-net-pci", "net1",
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"{'addr': %s}", stringify(PCI_SLOT_HP));
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if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
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qpci_unplug_acpi_device_test(qts, "net1", PCI_SLOT_HP);
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}
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}
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static void announce_self(void *obj, void *data, QGuestAllocator *t_alloc)
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{
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int *sv = data;
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char buffer[60];
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int len;
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QDict *rsp;
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int ret;
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uint16_t *proto = (uint16_t *)&buffer[12];
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size_t total_received = 0;
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uint64_t start, now, last_rxt, deadline;
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/* Send a set of packets over a few second period */
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rsp = qmp("{ 'execute' : 'announce-self', "
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" 'arguments': {"
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" 'initial': 20, 'max': 100,"
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" 'rounds': 300, 'step': 10, 'id': 'bob' } }");
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assert(!qdict_haskey(rsp, "error"));
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qobject_unref(rsp);
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/* Catch the first packet and make sure it's a RARP */
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ret = qemu_recv(sv[0], &len, sizeof(len), 0);
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g_assert_cmpint(ret, ==, sizeof(len));
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len = ntohl(len);
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ret = qemu_recv(sv[0], buffer, len, 0);
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g_assert_cmpint(*proto, ==, htons(ETH_P_RARP));
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/*
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* Stop the announcment by settings rounds to 0 on the
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* existing timer.
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*/
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rsp = qmp("{ 'execute' : 'announce-self', "
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" 'arguments': {"
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" 'initial': 20, 'max': 100,"
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" 'rounds': 0, 'step': 10, 'id': 'bob' } }");
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assert(!qdict_haskey(rsp, "error"));
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qobject_unref(rsp);
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/* Now make sure the packets stop */
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/* Times are in us */
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start = g_get_monotonic_time();
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/* 30 packets, max gap 100ms, * 4 for wiggle */
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deadline = start + 1000 * (100 * 30 * 4);
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last_rxt = start;
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while (true) {
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int saved_err;
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ret = qemu_recv(sv[0], buffer, 60, MSG_DONTWAIT);
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saved_err = errno;
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now = g_get_monotonic_time();
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g_assert_cmpint(now, <, deadline);
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if (ret >= 0) {
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if (ret) {
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last_rxt = now;
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}
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total_received += ret;
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/* Check it's not spewing loads */
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g_assert_cmpint(total_received, <, 60 * 30 * 2);
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} else {
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g_assert_cmpint(saved_err, ==, EAGAIN);
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/* 400ms, i.e. 4 worst case gaps */
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if ((now - last_rxt) > (1000 * 100 * 4)) {
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/* Nothings arrived for a while - must have stopped */
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break;
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};
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/* 100ms */
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g_usleep(1000 * 100);
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}
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};
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}
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static void virtio_net_test_cleanup(void *sockets)
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{
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int *sv = sockets;
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close(sv[0]);
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qos_invalidate_command_line();
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close(sv[1]);
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g_free(sv);
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}
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static void *virtio_net_test_setup(GString *cmd_line, void *arg)
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{
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int ret;
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int *sv = g_new(int, 2);
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ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
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g_assert_cmpint(ret, !=, -1);
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g_string_append_printf(cmd_line, " -netdev socket,fd=%d,id=hs0 ", sv[1]);
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g_test_queue_destroy(virtio_net_test_cleanup, sv);
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return sv;
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}
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static void large_tx(void *obj, void *data, QGuestAllocator *t_alloc)
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{
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QVirtioNet *dev = obj;
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QVirtQueue *vq = dev->queues[1];
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uint64_t req_addr;
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uint32_t free_head;
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size_t alloc_size = (size_t)data / 64;
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QTestState *qts = global_qtest;
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int i;
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/* Bypass the limitation by pointing several descriptors to a single
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* smaller area */
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req_addr = guest_alloc(t_alloc, alloc_size);
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free_head = qvirtqueue_add(qts, vq, req_addr, alloc_size, false, true);
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for (i = 0; i < 64; i++) {
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qvirtqueue_add(qts, vq, req_addr, alloc_size, false, i != 63);
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}
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qvirtqueue_kick(qts, dev->vdev, vq, free_head);
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qvirtio_wait_used_elem(qts, dev->vdev, vq, free_head, NULL,
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QVIRTIO_NET_TIMEOUT_US);
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guest_free(t_alloc, req_addr);
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}
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static void *virtio_net_test_setup_nosocket(GString *cmd_line, void *arg)
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{
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g_string_append(cmd_line, " -netdev hubport,hubid=0,id=hs0 ");
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return arg;
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}
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static void register_virtio_net_test(void)
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{
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QOSGraphTestOptions opts = {
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.before = virtio_net_test_setup,
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};
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qos_add_test("hotplug", "virtio-pci", hotplug, &opts);
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#ifndef _WIN32
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qos_add_test("basic", "virtio-net", send_recv_test, &opts);
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qos_add_test("rx_stop_cont", "virtio-net", stop_cont_test, &opts);
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#endif
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qos_add_test("announce-self", "virtio-net", announce_self, &opts);
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/* These tests do not need a loopback backend. */
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opts.before = virtio_net_test_setup_nosocket;
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opts.arg = (gpointer)UINT_MAX;
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qos_add_test("large_tx/uint_max", "virtio-net", large_tx, &opts);
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opts.arg = (gpointer)NET_BUFSIZE;
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qos_add_test("large_tx/net_bufsize", "virtio-net", large_tx, &opts);
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}
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libqos_init(register_virtio_net_test);
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