diff options
| author | Haiyang Zhang <haiyangz@microsoft.com> | 2014-12-01 13:28:39 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-12-08 20:24:11 -0500 |
| commit | c3582a2c4d0baf1fa3955c8b3d3d61308df474c7 (patch) | |
| tree | bcff2477cb791564cd2189026c088ec69b1ee217 | |
| parent | 6867b17b26d80cfd419e491141feb75082915979 (diff) | |
hyperv: Add support for vNIC hot removal
This patch adds proper handling of the vNIC hot removal event, which includes
a rescind-channel-offer message from the host side that triggers vNIC close and
removal. In this case, the notices to the host during close and removal is not
necessary because the channel is rescinded. This patch blocks these unnecessary
messages, and lets vNIC removal process complete normally.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 2 | ||||
| -rw-r--r-- | drivers/net/hyperv/netvsc.c | 3 | ||||
| -rw-r--r-- | drivers/net/hyperv/rndis_filter.c | 3 | ||||
| -rw-r--r-- | include/linux/hyperv.h | 2 |
4 files changed, 10 insertions, 0 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index a2d1a9612c8..191a6a3ae6c 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -517,6 +517,8 @@ static void vmbus_onoffer_rescind(struct vmbus_channel_message_header *hdr) /* Just return here, no channel found */ return; + channel->rescind = true; + /* work is initialized for vmbus_process_rescind_offer() from * vmbus_process_offer() where the channel got created */ queue_work(channel->controlwq, &channel->work); diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 6fc834e4306..dd867e6cabd 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -764,6 +764,9 @@ int netvsc_send(struct hv_device *device, out_channel = device->channel; packet->channel = out_channel; + if (out_channel->rescind) + return -ENODEV; + if (packet->page_buf_cnt) { ret = vmbus_sendpacket_pagebuffer(out_channel, packet->page_buf, diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index 7b2c5d1e9ba..ec0c40a8f65 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -958,6 +958,9 @@ static int rndis_filter_close_device(struct rndis_device *dev) return 0; ret = rndis_filter_set_packet_filter(dev, 0); + if (ret == -ENODEV) + ret = 0; + if (ret == 0) dev->state = RNDIS_DEV_INITIALIZED; diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 08cfaff8a07..476c685ca6f 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -650,6 +650,8 @@ struct vmbus_channel { u8 monitor_grp; u8 monitor_bit; + bool rescind; /* got rescind msg */ + u32 ringbuffer_gpadlhandle; /* Allocated memory for ring buffer */ |