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From a7db0339ff184a34168de5c1faff523e180fec03 Mon Sep 17 00:00:00 2001
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ae23c9 |
From: Xiao Wang <jasowang@redhat.com>
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Date: Fri, 11 Jan 2019 07:59:04 +0000
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ae23c9 |
Subject: [PATCH 09/11] virtio-net-test: add large tx buffer test
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Xiao Wang <jasowang@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
Message-id: <20190111075904.2030-10-jasowang@redhat.com>
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Patchwork-id: 83980
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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O-Subject: [RHEL8 qemu-kvm PATCH 9/9] virtio-net-test: add large tx buffer test
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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Bugzilla: 1636784
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
RH-Acked-by: Thomas Huth <thuth@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
RH-Acked-by: Jens Freimann <jfreimann@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
RH-Acked-by: Maxime Coquelin <maxime.coquelin@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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ae23c9 |
This test tries to build a packet whose size is greater than INT_MAX
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which tries to trigger integer overflow in qemu_net_queue_append_iov()
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which may result OOB.
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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Reviewed-by: Thomas Huth <thuth@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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Message-id: 20181204035347.6148-6-jasowang@redhat.com
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Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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(cherry picked from commit 118cafff251318d16e1cfdef9cbf6b7d1e74cdb5)
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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tests/virtio-net-test.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 46 insertions(+)
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diff --git a/tests/virtio-net-test.c b/tests/virtio-net-test.c
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index 9da8f3d..99bc605 100644
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--- a/tests/virtio-net-test.c
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+++ b/tests/virtio-net-test.c
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@@ -245,6 +245,48 @@ static void pci_basic(gconstpointer data)
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g_free(dev);
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qtest_shutdown(qs);
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}
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+
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+static void large_tx(gconstpointer data)
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+{
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+ QVirtioPCIDevice *dev;
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+ QOSState *qs;
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+ QVirtQueuePCI *tx, *rx;
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+ QVirtQueue *vq;
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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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+ int i;
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+
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+ qs = pci_test_start("-netdev hubport,id=hp0,hubid=0 "
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+ "-device virtio-net-pci,netdev=hp0");
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+ dev = virtio_net_pci_init(qs->pcibus, PCI_SLOT);
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+
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+ rx = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, qs->alloc, 0);
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+ tx = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, qs->alloc, 1);
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+
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+ driver_init(&dev->vdev);
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+ vq = &tx->vq;
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+
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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(qs->alloc, alloc_size);
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+ free_head = qvirtqueue_add(vq, req_addr, alloc_size, false, true);
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+
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+ for (i = 0; i < 64; i++) {
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+ qvirtqueue_add(vq, req_addr, alloc_size, false, i != 63);
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+ }
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+ qvirtqueue_kick(&dev->vdev, vq, free_head);
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+
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+ qvirtio_wait_used_elem(&dev->vdev, vq, free_head, NULL,
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+ QVIRTIO_NET_TIMEOUT_US);
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+
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+ qvirtqueue_cleanup(dev->vdev.bus, &tx->vq, qs->alloc);
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+ qvirtqueue_cleanup(dev->vdev.bus, &rx->vq, qs->alloc);
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+ qvirtio_pci_device_disable(dev);
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+ g_free(dev->pdev);
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+ g_free(dev);
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+ qtest_shutdown(qs);
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+}
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#endif
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static void hotplug(void)
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@@ -269,6 +311,10 @@ int main(int argc, char **argv)
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qtest_add_data_func("/virtio/net/pci/basic", send_recv_test, pci_basic);
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qtest_add_data_func("/virtio/net/pci/rx_stop_cont",
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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stop_cont_test, pci_basic);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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+ qtest_add_data_func("/virtio/net/pci/large_tx_uint_max",
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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+ (gconstpointer)UINT_MAX, large_tx);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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+ qtest_add_data_func("/virtio/net/pci/large_tx_net_bufsize",
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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+ (gconstpointer)NET_BUFSIZE, large_tx);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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#endif
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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qtest_add_func("/virtio/net/pci/hotplug", hotplug);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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--
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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1.8.3.1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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