diff options
Diffstat (limited to 'hw/net/xen_nic.c')
| -rw-r--r-- | hw/net/xen_nic.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/hw/net/xen_nic.c b/hw/net/xen_nic.c index 63918ae1a0..19ecfc4ccf 100644 --- a/hw/net/xen_nic.c +++ b/hw/net/xen_nic.c @@ -370,11 +370,16 @@ static int net_connect(struct XenDevice *xendev) netdev->xendev.dom, netdev->tx_ring_ref, PROT_READ | PROT_WRITE); + if (!netdev->txs) { + return -1; + } netdev->rxs = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev, netdev->xendev.dom, netdev->rx_ring_ref, PROT_READ | PROT_WRITE); - if (!netdev->txs || !netdev->rxs) { + if (!netdev->rxs) { + xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->txs, 1); + netdev->txs = NULL; return -1; } BACK_RING_INIT(&netdev->tx_ring, netdev->txs, XC_PAGE_SIZE); @@ -405,10 +410,6 @@ static void net_disconnect(struct XenDevice *xendev) xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->rxs, 1); netdev->rxs = NULL; } - if (netdev->nic) { - qemu_del_nic(netdev->nic); - netdev->nic = NULL; - } } static void net_event(struct XenDevice *xendev) @@ -422,7 +423,12 @@ static int net_free(struct XenDevice *xendev) { struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev); + if (netdev->nic) { + qemu_del_nic(netdev->nic); + netdev->nic = NULL; + } g_free(netdev->mac); + netdev->mac = NULL; return 0; } |