diff options
Diffstat (limited to 'datapath-windows/ovsext/Ip6Fragment.h')
| -rw-r--r-- | datapath-windows/ovsext/Ip6Fragment.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/datapath-windows/ovsext/Ip6Fragment.h b/datapath-windows/ovsext/Ip6Fragment.h new file mode 100644 index 000000000..f978bf5c3 --- /dev/null +++ b/datapath-windows/ovsext/Ip6Fragment.h @@ -0,0 +1,111 @@ +/* + * Copyright (c) 2022 VMware, Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __IP6FRAGMENT_H_ +#define __IP6FRAGMENT_H_ 1 +#include "PacketIO.h" + +typedef struct _OVS_FRAGMENT6_LIST { + CHAR *pbuff; + UINT16 len; /* Fragment data length. */ + UINT16 offset; /* Fragment data offset. */ + struct _OVS_FRAGMENT6_LIST *next; +} OVS_FRAGMENT6_LIST, *POVS_FRAGMENT6_LIST; + +typedef struct _OVS_IP6FRAG_KEY { + UINT8 protocol; + UINT8 pad_1[3]; /* Align the structure to address boundaries.*/ + UINT32 id; + struct in6_addr sAddr; + struct in6_addr dAddr; + ovs_be64 tunnelId; +} OVS_IP6FRAG_KEY, *POVS_IP6FRAG_KEY; + +typedef struct _OVS_IP6FRAG_ENTRY { + NDIS_SPIN_LOCK lockObj; /* To access the entry. */ + BOOLEAN markedForDelete; + UINT8 numFragments; + UINT16 totalLen; /* The packet data total length(not + * include ipv6 header and opt header length) before + * fragment */ + UINT16 recvdLen; /* Total data length packet contains has received */ + UINT16 mru; /* Max receive unit(it's the whole ethernet frame + * packet length), it will be used in sent out before forward */ + UINT64 expiration; + /* refer https://www.rfc-editor.org/rfc/rfc8200.html */ + PCHAR beforeFragHdrBuf;/* ipv6 extension header buf before fragment field */ + UINT16 beforeFragHdrLen; + UINT16 priorFragEleOffset;/* The last element before fragment field offset */ + PCHAR fragHdrBuf; + UINT16 fragHdrLen; + PCHAR behindFragHdrBuf;/* ipv6 extension header buf behind fragment field */ + UINT16 behindFragHdrLen; + OVS_IP6FRAG_KEY fragKey; + POVS_FRAGMENT6_LIST head; + POVS_FRAGMENT6_LIST tail; + LIST_ENTRY link; +} OVS_IP6FRAG_ENTRY, *POVS_IP6FRAG_ENTRY; + +typedef struct _IP6_PktExtHeader_Meta { + UINT8 firstHdr; + UINT8 protocol; + UINT16 beforeFragExtHdrLen; + UINT16 fragExtHdrLen; + UINT16 behindFragExtHdrLen; + UINT16 extHdrTotalLen; + UINT16 dataPayloadLen;/* Ipv6 data length, not include extension header */ + UINT16 fragOffset; + UINT16 priorFragEleOffset; + UINT16 flags; + UINT16 pktMru; + UINT32 ident; + PCHAR beforeFragElePtr; + IPv6ExtHdr *firstHdrPtr; +} IP6_PktExtHeader_Meta, *PIP6_PktExtHeader_Meta; + +typedef struct _OVS_IP6FRAG_THREAD_CTX { + KEVENT event; + PVOID threadObject; + UINT32 exit; +} OVS_IP6FRAG_THREAD_CTX, *POVS_IP6FRAG_THREAD_CTX; + +#define IP6_FRAG_HASH_TABLE_SIZE ((UINT32)1 << 10) +#define IP6_FRAG_HASH_TABLE_MASK (IP6_FRAG_HASH_TABLE_SIZE - 1) + +#define IP6FRAG_ENTRY_TIMEOUT 300000000LL +#define IP6FRAG_CLEANUP_INTERVAL IP6FRAG_ENTRY_TIMEOUT * 2 /*1m.*/ + +NDIS_STATUS OvsProcessIpv6Fragment(POVS_SWITCH_CONTEXT switchContext, + PNET_BUFFER_LIST *curNbl, + OvsCompletionList *completionList, + NDIS_SWITCH_PORT_ID sourcePort, + POVS_PACKET_HDR_INFO layers, + ovs_be64 tunnelId, OvsFlowKey *key); +NDIS_STATUS OvsStorageIpv6ExtHeader(POVS_IP6FRAG_ENTRY entry, + UINT16 beforeFragHdrLen, + UINT16 fragHdrLen, + UINT16 behindFragHdrLen, + UINT16 priorFragEleOffset, + CHAR *pktBuf, + POVS_PACKET_HDR_INFO layers); +NDIS_STATUS OvsInitIp6Fragment(POVS_SWITCH_CONTEXT context); +VOID OvsCleanupIp6Fragment(VOID); +NDIS_STATUS OvsGetPacketMeta(PIP6_PktExtHeader_Meta pktMeta, EthHdr *eth, + OvsFlowKey *key, POVS_PACKET_HDR_INFO layers); +PCHAR OvsBuildNewIpv6Hdr(EthHdr *eth, POVS_IP6FRAG_ENTRY entry, + POVS_PACKET_HDR_INFO layers, UINT32 *pktLen); + +#endif //_IP6FRAGMENT_H_ |