diff options
Diffstat (limited to 'kernel/drivers/net/xen-netback/xenbus.c')
| -rw-r--r-- | kernel/drivers/net/xen-netback/xenbus.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/drivers/net/xen-netback/xenbus.c b/kernel/drivers/net/xen-netback/xenbus.c index ec383b0f5..56ebd8267 100644 --- a/kernel/drivers/net/xen-netback/xenbus.c +++ b/kernel/drivers/net/xen-netback/xenbus.c @@ -327,6 +327,14 @@ static int netback_probe(struct xenbus_device *dev, goto abort_transaction; } + /* We support multicast-control. */ + err = xenbus_printf(xbt, dev->nodename, + "feature-multicast-control", "%d", 1); + if (err) { + message = "writing feature-multicast-control"; + goto abort_transaction; + } + err = xenbus_transaction_end(xbt, 0); } while (err == -EAGAIN); @@ -780,6 +788,12 @@ static void connect(struct backend_info *be) /* Use the number of queues requested by the frontend */ be->vif->queues = vzalloc(requested_num_queues * sizeof(struct xenvif_queue)); + if (!be->vif->queues) { + xenbus_dev_fatal(dev, -ENOMEM, + "allocating queues"); + return; + } + be->vif->num_queues = requested_num_queues; be->vif->stalled_queues = requested_num_queues; @@ -1016,6 +1030,11 @@ static int read_xenbus_vif_flags(struct backend_info *be) val = 0; vif->ipv6_csum = !!val; + if (xenbus_scanf(XBT_NIL, dev->otherend, "request-multicast-control", + "%d", &val) < 0) + val = 0; + vif->multicast_control = !!val; + return 0; } |