2 * Copyright (c) 2014 VMware, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 * This file contains the definition of the switch object for the OVS.
21 #ifndef __OVS_SWITCH_H_
22 #define __OVS_SWITCH_H_ 1
24 #include "OvsNetProto.h"
25 #include "OvsBufferMgmt.h"
26 #define OVS_MAX_VPORT_ARRAY_SIZE 1024
28 #define OVS_VPORT_MASK (OVS_MAX_VPORT_ARRAY_SIZE - 1)
30 #define OVS_INTERNAL_VPORT_DEFAULT_INDEX 0
32 //Tunnel port indicies
33 #define RESERVED_START_INDEX1 1
34 #define OVS_TUNNEL_INDEX_START RESERVED_START_INDEX1
35 #define OVS_VXLAN_VPORT_INDEX 2
36 #define OVS_GRE_VPORT_INDEX 3
37 #define OVS_GRE64_VPORT_INDEX 4
38 #define OVS_TUNNEL_INDEX_END OVS_GRE64_VPORT_INDEX
40 #define OVS_EXTERNAL_VPORT_START 8
41 #define OVS_EXTERNAL_VPORT_END 40
42 #define OVS_INTERNAL_VPORT_START 40
43 #define OVS_INTERNAL_VPOR_END 72
44 #define OVS_VM_VPORT_START 72
45 #define OVS_VM_VPORT_MAX 0xffff
46 #define OVS_VPORT_INDEX(_portNo) ((_portNo) & 0xffffff)
47 #define OVS_VPORT_PORT_NO(_index, _gen) \
48 (((_index) & 0xffffff) | ((UINT32)(_gen) << 24))
49 #define OVS_VPORT_GEN(portNo) (portNo >> 24)
51 #define OVS_MAX_PHYS_ADAPTERS 32
52 #define OVS_MAX_IP_VPOR 32
54 #define OVS_HASH_BASIS 0x13578642
56 typedef struct _OVS_DATAPATH
58 PLIST_ENTRY flowTable; // Contains OvsFlows.
59 UINT32 nFlows; // Number of entries in flowTable.
61 // List_Links queues[64]; // Hash table of queue IDs.
64 UINT64 hits; // Number of flow table hits.
65 UINT64 misses; // Number of flow table misses.
66 UINT64 lost; // Number of dropped misses.
68 /* Used to protect the flows in the flowtable. */
69 PNDIS_RW_LOCK_EX lock;
70 } OVS_DATAPATH, *POVS_DATAPATH;
75 * The context allocated per switch., For OVS, we only
76 * support one switch which corresponding to one datapath.
77 * Each datapath can have multiple logical bridges configured
78 * which is maintained by vswitchd.
81 typedef enum OVS_SWITCH_DATAFLOW_STATE
85 } OVS_SWITCH_DATAFLOW_STATE, *POVS_SWITCH_DATAFLOW_STATE;
87 typedef enum OVS_SWITCH_CONTROFLOW_STATE
92 } OVS_SWITCH_CONTROLFLOW_STATE, *POVS_SWITCH_CONTROLFLOW_STATE;
94 // XXX: Take care of alignment and grouping members by cacheline
95 typedef struct _OVS_SWITCH_CONTEXT
97 /* Coarse and fine-grained switch states. */
98 OVS_SWITCH_DATAFLOW_STATE dataFlowState;
99 OVS_SWITCH_CONTROLFLOW_STATE controlFlowState;
101 BOOLEAN isActivateFailed;
105 NDIS_SWITCH_PORT_ID externalPortId;
106 NDIS_SWITCH_PORT_ID internalPortId;
107 PVOID externalVport; // the virtual adapter vport
111 PLIST_ENTRY nameHashArray; // based on ovsName
112 PLIST_ENTRY portHashArray; // based on portId
114 UINT32 numPhysicalNics;
115 UINT32 numVports; // include validation port
116 UINT32 lastPortIndex;
118 /* Lock taken over the switch. This protects the ports on the switch. */
119 PNDIS_RW_LOCK_EX dispatchLock;
122 OVS_DATAPATH datapath;
124 /* Handle to the OVSExt filter driver. Same as 'gOvsExtDriverHandle'. */
125 NDIS_HANDLE NdisFilterHandle;
127 /* Handle and callbacks exposed by the underlying hyper-v switch. */
128 NDIS_SWITCH_CONTEXT NdisSwitchContext;
129 NDIS_SWITCH_OPTIONAL_HANDLERS NdisSwitchHandlers;
131 volatile LONG pendingInjectedNblCount;
132 volatile LONG pendingOidCount;
134 OVS_NBL_POOL ovsPool;
135 } OVS_SWITCH_CONTEXT, *POVS_SWITCH_CONTEXT;
139 OvsAcquireDatapathRead(OVS_DATAPATH *datapath,
140 LOCK_STATE_EX *lockState,
144 NdisAcquireRWLockRead(datapath->lock, lockState, dispatch);
148 OvsAcquireDatapathWrite(OVS_DATAPATH *datapath,
149 LOCK_STATE_EX *lockState,
153 NdisAcquireRWLockWrite(datapath->lock, lockState, dispatch);
158 OvsReleaseDatapath(OVS_DATAPATH *datapath,
159 LOCK_STATE_EX *lockState)
162 NdisReleaseRWLock(datapath->lock, lockState);
166 PVOID OvsGetVportFromIndex(UINT16 index);
167 PVOID OvsGetExternalVport();
169 #endif /* __OVS_SWITCH_H_ */