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authorMohsin Kazmi <sykazmi@cisco.com>2020-08-20 17:18:56 +0200
committerBenoƮt Ganne <bganne@cisco.com>2020-08-31 09:05:02 +0000
commit133c91c1c06e7c773ba675181901ba0dcf955ae6 (patch)
tree83000f26d297fde5ba53d0916b7b57ca9446a770 /src/vnet/devices/virtio
parent2b79341dcafe8fa9397acf42b8021c88664db2df (diff)
virtio: fix the coverity warning
Type: fix Change-Id: I6c6d66ad8aa158be8d2b9d111de7d46473b9dc02 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/devices/virtio')
-rw-r--r--src/vnet/devices/virtio/pci.c9
-rw-r--r--src/vnet/devices/virtio/virtio_pci_legacy.c11
2 files changed, 13 insertions, 7 deletions
diff --git a/src/vnet/devices/virtio/pci.c b/src/vnet/devices/virtio/pci.c
index 494a3f383fa..1e94bbdc029 100644
--- a/src/vnet/devices/virtio/pci.c
+++ b/src/vnet/devices/virtio/pci.c
@@ -727,8 +727,13 @@ virtio_pci_read_caps (vlib_main_t * vm, virtio_if_t * vif, void **bar)
"[%4x] cfg type: %u, bar: %u, offset: %04x, len: %u",
pos, cap.cfg_type, cap.bar, cap.offset, cap.length);
- vif->bar = bar[cap.bar];
- vif->bar_id = cap.bar;
+ if (cap.bar >= 1 && cap.bar <= 5)
+ {
+ vif->bar = bar[cap.bar];
+ vif->bar_id = cap.bar;
+ }
+ else
+ return clib_error_return (error, "invalid bar %u", cap.bar);
switch (cap.cfg_type)
{
diff --git a/src/vnet/devices/virtio/virtio_pci_legacy.c b/src/vnet/devices/virtio/virtio_pci_legacy.c
index f70776db5ac..cf1d84135aa 100644
--- a/src/vnet/devices/virtio/virtio_pci_legacy.c
+++ b/src/vnet/devices/virtio/virtio_pci_legacy.c
@@ -113,8 +113,10 @@ virtio_pci_legacy_set_guest_features (vlib_main_t * vm, virtio_if_t * vif,
clib_warning ("only 32 bit features are allowed for legacy virtio!");
}
u32 features = 0;
+ u32 gf = (u32) guest_features;
+
vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
- (u32 *) & guest_features);
+ &gf);
vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
&features);
if (features != (u32) guest_features)
@@ -178,14 +180,13 @@ virtio_pci_legacy_setup_queue (vlib_main_t * vm, virtio_if_t * vif,
u16 queue_id, void *p)
{
u64 addr = vlib_physmem_get_pa (vm, p) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
- u32 addr2 = 0;
+ u32 addr2 = 0, a = (u32) addr;
vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
&queue_id);
- vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
- (u32 *) & addr);
+ vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN, &a);
vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
&addr2);
- if ((u32) addr == addr2)
+ if (addr == addr2)
return 0;
clib_warning ("legacy queue setup failed!");