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| author | K. Y. Srinivasan <kys@microsoft.com> | 2015-04-22 21:31:32 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-24 12:18:24 -0700 |
| commit | 2db84eff127e3f4b3635edc589cd6a56db8755a3 (patch) | |
| tree | 2890e6494ebeb52bfdbaa182a9e58d3f2734d57e /drivers/hv/channel_mgmt.c | |
| parent | db9ba2088f6507fee370904f02db1eb9b49bd088 (diff) | |
| download | talos-op-linux-2db84eff127e3f4b3635edc589cd6a56db8755a3.tar.gz talos-op-linux-2db84eff127e3f4b3635edc589cd6a56db8755a3.zip | |
Drivers: hv: vmbus: Implement the protocol for tearing down vmbus state
Implement the protocol for tearing down the monitor state established with
the host.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/channel_mgmt.c')
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 865a3afa1d86..4b9d89ab44d3 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -422,6 +422,30 @@ static void init_vp_index(struct vmbus_channel *channel, const uuid_le *type_gui } /* + * vmbus_unload_response - Handler for the unload response. + */ +static void vmbus_unload_response(struct vmbus_channel_message_header *hdr) +{ + /* + * This is a global event; just wakeup the waiting thread. + * Once we successfully unload, we can cleanup the monitor state. + */ + complete(&vmbus_connection.unload_event); +} + +void vmbus_initiate_unload(void) +{ + struct vmbus_channel_message_header hdr; + + init_completion(&vmbus_connection.unload_event); + memset(&hdr, 0, sizeof(struct vmbus_channel_message_header)); + hdr.msgtype = CHANNELMSG_UNLOAD; + vmbus_post_msg(&hdr, sizeof(struct vmbus_channel_message_header)); + + wait_for_completion(&vmbus_connection.unload_event); +} + +/* * vmbus_onoffer - Handler for channel offers from vmbus in parent partition. * */ @@ -717,6 +741,7 @@ struct vmbus_channel_message_table_entry {CHANNELMSG_INITIATE_CONTACT, 0, NULL}, {CHANNELMSG_VERSION_RESPONSE, 1, vmbus_onversion_response}, {CHANNELMSG_UNLOAD, 0, NULL}, + {CHANNELMSG_UNLOAD_RESPONSE, 1, vmbus_unload_response}, }; /* |
