diff options
| author | Eitan Eliahu <eliahue@vmware.com> | 2014-10-20 18:23:00 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@nicira.com> | 2014-10-20 15:49:39 -0700 |
| commit | f73dc82170af34e224dca703b93640134f0372af (patch) | |
| tree | 197eab9c673460e5dde27def6a363e273a1b9c60 /datapath-windows | |
| parent | c48f691f3fcac853ee90d1219997147fc2af631b (diff) | |
| download | openvswitch-f73dc82170af34e224dca703b93640134f0372af.tar.gz | |
datapath-windows: Implement missed packet kernel-to-user mode notification.
An I/O request is queued in Kernel to be completed upon a packet mismatch.
This mechanism is similar to the port state notification.
Access to instance data should be under a lock (TBD)
Signed-off-by: Eitan Eliahu <eliahue@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Alin Gabriel Serdean <aserdean@cloudbasesolutions.com>
Diffstat (limited to 'datapath-windows')
| -rw-r--r-- | datapath-windows/include/OvsDpInterfaceExt.h | 1 | ||||
| -rw-r--r-- | datapath-windows/ovsext/Datapath.c | 30 |
2 files changed, 31 insertions, 0 deletions
diff --git a/datapath-windows/include/OvsDpInterfaceExt.h b/datapath-windows/include/OvsDpInterfaceExt.h index 953c8ba31..cea9e4124 100644 --- a/datapath-windows/include/OvsDpInterfaceExt.h +++ b/datapath-windows/include/OvsDpInterfaceExt.h @@ -77,6 +77,7 @@ enum ovs_win_control_cmd { OVS_CTRL_CMD_WIN_GET_PID, OVS_CTRL_CMD_WIN_PEND_REQ, + OVS_CTRL_CMD_WIN_PEND_PACKET_REQ, OVS_CTRL_CMD_MC_SUBSCRIBE_REQ, OVS_CTRL_CMD_PACKET_SUBSCRIBE_REQ, diff --git a/datapath-windows/ovsext/Datapath.c b/datapath-windows/ovsext/Datapath.c index fae824a85..79e7c7d27 100644 --- a/datapath-windows/ovsext/Datapath.c +++ b/datapath-windows/ovsext/Datapath.c @@ -91,6 +91,7 @@ typedef struct _NETLINK_FAMILY { /* Handlers for the various netlink commands. */ static NetlinkCmdHandler OvsGetPidCmdHandler, OvsPendEventCmdHandler, + OvsPendPacketCmdHandler, OvsSubscribeEventCmdHandler, OvsSubscribePacketCmdHandler, OvsReadEventCmdHandler, @@ -131,6 +132,11 @@ NETLINK_CMD nlControlFamilyCmdOps[] = { .supportedDevOp = OVS_WRITE_DEV_OP, .validateDpIndex = TRUE, }, + { .cmd = OVS_CTRL_CMD_WIN_PEND_PACKET_REQ, + .handler = OvsPendPacketCmdHandler, + .supportedDevOp = OVS_WRITE_DEV_OP, + .validateDpIndex = TRUE, + }, { .cmd = OVS_CTRL_CMD_MC_SUBSCRIBE_REQ, .handler = OvsSubscribeEventCmdHandler, .supportedDevOp = OVS_WRITE_DEV_OP, @@ -2399,4 +2405,28 @@ OvsSubscribePacketCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx, done: return status; } + +/* + * -------------------------------------------------------------------------- + * Handler for queueing an IRP used for missed packet notification. The IRP is + * completed when a packet received and mismatched. STATUS_PENDING is returned + * on success. User mode keep a pending IRP at all times. + * -------------------------------------------------------------------------- + */ +static NTSTATUS +OvsPendPacketCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx, + UINT32 *replyLen) +{ + UNREFERENCED_PARAMETER(replyLen); + + POVS_OPEN_INSTANCE instance = + (POVS_OPEN_INSTANCE)usrParamsCtx->ovsInstance; + + /* + * XXX access to packet queue must be through acquiring a lock as user mode + * could unsubscribe and the instnace will be freed. + */ + return OvsWaitDpIoctl(usrParamsCtx->irp, instance->fileObject); +} + #endif /* OVS_USE_NL_INTERFACE */ |