Create a NBL for each NB when required
ovs/ovs-issues#15
All NET_BUFFERs of a NET_BUFFER_LIST must go through
the pipeline: extract, find flow, execute. Previously,
only the first NET_BUFFER of a NET_BUFFER_LIST was going
through this pipeline, which was erroneous.
OvsPartialCopyToMultipleNBLs is used to make each NET_BUFFER
have its own NET_BUFFER_LIST.
Some functions that used to take as argument a NET_BUFFER_LIST
now take as argument a NET_BUFFER. I have also added a few
ASSERTs where the NET_BUFFER_LIST is expected to have
only one NET_BUFFER."
Signed-off-by: Samuel Ghinet <sghi...@cloudbasesolutions.com>
---
datapath-windows/ovsext/OvsActions.c | 21 ++++--
datapath-windows/ovsext/OvsBufferMgmt.c | 6 +-
datapath-windows/ovsext/OvsBufferMgmt.h | 5 ++
datapath-windows/ovsext/OvsChecksum.c | 7 +-
datapath-windows/ovsext/OvsFlow.c | 44 ++++++------
datapath-windows/ovsext/OvsFlow.h | 6 +-
datapath-windows/ovsext/OvsPacketIO.c | 107 ++++++++++++++++++------------
datapath-windows/ovsext/OvsPacketParser.c | 20 +++---
datapath-windows/ovsext/OvsPacketParser.h | 30 ++++-----
datapath-windows/ovsext/OvsTunnel.c | 16 +++--
datapath-windows/ovsext/OvsUser.c | 22 ++++--
datapath-windows/ovsext/OvsVxlan.c | 37 ++++++++---
12 files changed, 199 insertions(+), 122 deletions(-)
diff --git a/datapath-windows/ovsext/OvsActions.c
b/datapath-windows/ovsext/OvsActions.c
index 4a2c117..e342d75 100644
--- a/datapath-windows/ovsext/OvsActions.c
+++ b/datapath-windows/ovsext/OvsActions.c
@@ -495,6 +495,9 @@ OvsDoFlowLookupOutput(OvsForwardingContext *ovsFwdCtx)
OvsFlow *flow;
UINT64 hash;
NDIS_STATUS status;
+ VOID* vlanTagValue;
+ NET_BUFFER* pNb;
+
POVS_VPORT_ENTRY vport =
OvsFindVportByPortNo(ovsFwdCtx->switchContext, ovsFwdCtx->srcVportNo);
if (vport == NULL || vport->ovsState != OVS_STATE_CONNECTED) {
@@ -505,12 +508,18 @@ OvsDoFlowLookupOutput(OvsForwardingContext *ovsFwdCtx)
return NDIS_STATUS_SUCCESS;
}
ASSERT(vport->nicState == NdisSwitchNicStateConnected);
+ ASSERT(ovsFwdCtx->curNbl->FirstNetBuffer->Next == NULL);
/* Assert that in the Rx direction, key is always setup. */
ASSERT(ovsFwdCtx->tunnelRxNic == NULL || ovsFwdCtx->tunKey.dst != 0);
- status = OvsExtractFlow(ovsFwdCtx->curNbl, ovsFwdCtx->srcVportNo,
- &key, &ovsFwdCtx->layers, ovsFwdCtx->tunKey.dst != 0
?
- &ovsFwdCtx->tunKey : NULL);
+ vlanTagValue = NET_BUFFER_LIST_INFO(ovsFwdCtx->curNbl,
+ Ieee8021QNetBufferListInfo);
+
+ pNb = NET_BUFFER_LIST_FIRST_NB(ovsFwdCtx->curNbl);
+
+ status = OvsExtractFlow(pNb, ovsFwdCtx->srcVportNo,
+ &key, &ovsFwdCtx->layers, ovsFwdCtx->tunKey.dst != 0 ?
+ &ovsFwdCtx->tunKey : NULL, vlanTagValue);
if (status != NDIS_STATUS_SUCCESS) {
OvsCompleteNBLForwardingCtx(ovsFwdCtx,
L"OVS-Flow extract failed");
@@ -520,7 +529,7 @@ OvsDoFlowLookupOutput(OvsForwardingContext *ovsFwdCtx)
flow = OvsLookupFlow(&ovsFwdCtx->switchContext->datapath, &key, &hash,
FALSE);
if (flow) {
- OvsFlowUsed(flow, ovsFwdCtx->curNbl, &ovsFwdCtx->layers);
+ OvsFlowUsed(flow, pNb, &ovsFwdCtx->layers);
ovsFwdCtx->switchContext->datapath.hits++;
status = OvsActionsExecute(ovsFwdCtx->switchContext,
ovsFwdCtx->completionList, ovsFwdCtx->curNbl,
@@ -828,6 +837,8 @@ dropit:
*
* Side effects:
* This function consumes the NBL.
+
+ * XXX: it is called by OvsIpHlprCbVxlan, which is not used!
* --------------------------------------------------------------------------
*/
VOID
@@ -1348,6 +1359,8 @@ OvsActionsExecute(POVS_SWITCH_CONTEXT switchContext,
PNDIS_SWITCH_FORWARDING_DETAIL_NET_BUFFER_LIST_INFO fwdDetail =
NET_BUFFER_LIST_SWITCH_FORWARDING_DETAIL(curNbl);
+ ASSERT(curNbl->FirstNetBuffer->Next == NULL);
+
/* XXX: ASSERT that the flow table lock is held. */
status = OvsInitForwardingCtx(&ovsFwdCtx, switchContext, curNbl, portNo,
sendFlags, fwdDetail, completionList,
diff --git a/datapath-windows/ovsext/OvsBufferMgmt.c
b/datapath-windows/ovsext/OvsBufferMgmt.c
index 8aa8060..18eff07 100644
--- a/datapath-windows/ovsext/OvsBufferMgmt.c
+++ b/datapath-windows/ovsext/OvsBufferMgmt.c
@@ -1085,7 +1085,7 @@ nblcopy_error:
* --------------------------------------------------------------------------
*/
static NDIS_STATUS
-GetSegmentHeaderInfo(PNET_BUFFER_LIST nbl,
+GetSegmentHeaderInfo(PNET_BUFFER nb,
const POVS_PACKET_HDR_INFO hdrInfo,
UINT32 *hdrSize, UINT32 *seqNumber)
{
@@ -1093,7 +1093,7 @@ GetSegmentHeaderInfo(PNET_BUFFER_LIST nbl,
const TCPHdr *tcp;
/* Parse the orginal Eth/IP/TCP header */
- tcp = OvsGetPacketBytes(nbl, sizeof *tcp, hdrInfo->l4Offset, &tcpStorage);
+ tcp = OvsGetPacketBytes(nb, sizeof *tcp, hdrInfo->l4Offset, &tcpStorage);
if (tcp == NULL) {
return NDIS_STATUS_FAILURE;
}
@@ -1199,7 +1199,7 @@ OvsTcpSegmentNBL(PVOID ovsContext,
ASSERT(NET_BUFFER_NEXT_NB(nb) == NULL);
/* Figure out the segment header size */
- status = GetSegmentHeaderInfo(nbl, hdrInfo, &hdrSize, &seqNumber);
+ status = GetSegmentHeaderInfo(nb, hdrInfo, &hdrSize, &seqNumber);
if (status != NDIS_STATUS_SUCCESS) {
OVS_LOG_INFO("Cannot parse NBL header");
return NULL;
diff --git a/datapath-windows/ovsext/OvsBufferMgmt.h
b/datapath-windows/ovsext/OvsBufferMgmt.h
index 9c00b1b..a0c2c77 100644
--- a/datapath-windows/ovsext/OvsBufferMgmt.h
+++ b/datapath-windows/ovsext/OvsBufferMgmt.h
@@ -81,6 +81,11 @@ typedef struct _OVS_NBL_POOL {
#endif
} OVS_NBL_POOL, *POVS_NBL_POOL;
+#define OVS_NBL_FOR_EACH(pCurNbl, nblList) \
+for (NET_BUFFER_LIST* pCurNbl = nblList; \
+ pCurNbl != NULL; \
+ pCurNbl = NET_BUFFER_LIST_NEXT_NBL(pCurNbl))
+
NDIS_STATUS OvsInitBufferPool(PVOID context);
VOID OvsCleanupBufferPool(PVOID context);
diff --git a/datapath-windows/ovsext/OvsChecksum.c
b/datapath-windows/ovsext/OvsChecksum.c
index e192373..5b9cbfa 100644
--- a/datapath-windows/ovsext/OvsChecksum.c
+++ b/datapath-windows/ovsext/OvsChecksum.c
@@ -535,8 +535,13 @@ OvsValidateIPChecksum(PNET_BUFFER_LIST curNbl,
}
/* Next, check if the NIC did not validate the RX checksum. */
+ /*
+ * XXX: we have no confidence that this transfer is an Rx, except
+ * if we check the caller function
+ */
if (!csumInfo.Receive.IpChecksumSucceeded) {
- ipHdr = OvsGetIp(curNbl, hdrInfo->l3Offset, &ip_storage);
+ ipHdr = OvsGetIp(NET_BUFFER_LIST_FIRST_NB(curNbl),
+ hdrInfo->l3Offset, &ip_storage);
if (ipHdr) {
ip_storage = *ipHdr;
hdrChecksum = ipHdr->check;
diff --git a/datapath-windows/ovsext/OvsFlow.c
b/datapath-windows/ovsext/OvsFlow.c
index daa64e0..60b01e2 100644
--- a/datapath-windows/ovsext/OvsFlow.c
+++ b/datapath-windows/ovsext/OvsFlow.c
@@ -104,7 +104,7 @@ OvsAllocateFlowTable(OVS_DATAPATH *datapath,
/*
*----------------------------------------------------------------------------
- * GetStartAddrNBL --
+ * GetStartAddrNB --
* Get the virtual address of the frame.
*
* Results:
@@ -112,7 +112,7 @@ OvsAllocateFlowTable(OVS_DATAPATH *datapath,
*----------------------------------------------------------------------------
*/
static __inline VOID *
-GetStartAddrNBL(const NET_BUFFER_LIST *_pNB)
+GetStartAddrNB(const NET_BUFFER *_pNB)
{
PMDL curMdl;
PUINT8 curBuffer;
@@ -121,21 +121,21 @@ GetStartAddrNBL(const NET_BUFFER_LIST *_pNB)
ASSERT(_pNB);
// Ethernet Header is a guaranteed safe access.
- curMdl = (NET_BUFFER_LIST_FIRST_NB(_pNB))->CurrentMdl;
+ curMdl = (_pNB)->CurrentMdl;
curBuffer = MmGetSystemAddressForMdlSafe(curMdl, LowPagePriority);
if (!curBuffer) {
return NULL;
}
curHeader = (PEthHdr)
- (curBuffer + (NET_BUFFER_LIST_FIRST_NB(_pNB))->CurrentMdlOffset);
+ (curBuffer + (_pNB)->CurrentMdlOffset);
return (VOID *) curHeader;
}
VOID
OvsFlowUsed(OvsFlow *flow,
- const NET_BUFFER_LIST *packet,
+ const NET_BUFFER *packet,
const POVS_PACKET_HDR_INFO layers)
{
LARGE_INTEGER tickCount;
@@ -144,7 +144,7 @@ OvsFlowUsed(OvsFlow *flow,
flow->used = tickCount.QuadPart * ovsTimeIncrementPerTick;
flow->used += ovsUserTimestampDelta;
flow->packetCount++;
- flow->byteCount += OvsPacketLenNBL(packet);
+ flow->byteCount += NET_BUFFER_DATA_LENGTH(packet);
flow->tcpFlags |= OvsGetTcpFlags(packet, &flow->key, layers);
}
@@ -191,15 +191,14 @@ DeleteAllFlows(OVS_DATAPATH *datapath)
*----------------------------------------------------------------------------
*/
NDIS_STATUS
-OvsExtractFlow(const NET_BUFFER_LIST *packet,
+OvsExtractFlow(const NET_BUFFER* pNb,
UINT32 inPort,
OvsFlowKey *flow,
POVS_PACKET_HDR_INFO layers,
- OvsIPv4TunnelKey *tunKey)
+ OvsIPv4TunnelKey *tunKey, VOID* vlanTagValue)
{
struct Eth_Header *eth;
UINT8 offset = 0;
- PVOID vlanTagValue;
layers->value = 0;
@@ -213,21 +212,20 @@ OvsExtractFlow(const NET_BUFFER_LIST *packet,
}
flow->l2.inPort = inPort;
-
- if ( OvsPacketLenNBL(packet) < ETH_HEADER_LEN_DIX) {
+
+ if (NET_BUFFER_DATA_LENGTH(pNb) < ETH_HEADER_LEN_DIX) {
flow->l2.keyLen = OVS_WIN_TUNNEL_KEY_SIZE + 8 - flow->l2.offset;
return NDIS_STATUS_SUCCESS;
}
/* Link layer. */
- eth = (Eth_Header *)GetStartAddrNBL((NET_BUFFER_LIST *)packet);
+ eth = (Eth_Header *)GetStartAddrNB(pNb);
memcpy(flow->l2.dlSrc, eth->src, ETH_ADDR_LENGTH);
memcpy(flow->l2.dlDst, eth->dst, ETH_ADDR_LENGTH);
/*
* vlan_tci.
*/
- vlanTagValue = NET_BUFFER_LIST_INFO(packet, Ieee8021QNetBufferListInfo);
if (vlanTagValue) {
PNDIS_NET_BUFFER_LIST_8021Q_INFO vlanTag =
(PNDIS_NET_BUFFER_LIST_8021Q_INFO)(PVOID *)&vlanTagValue;
@@ -262,7 +260,7 @@ OvsExtractFlow(const NET_BUFFER_LIST *packet,
if (ETH_TYPENOT8023(eth->dix.typeNBO)) {
flow->l2.dlType = eth->dix.typeNBO;
layers->l3Offset = ETH_HEADER_LEN_DIX + offset;
- } else if (OvsPacketLenNBL(packet) >= ETH_HEADER_LEN_802_3 &&
+ } else if (NET_BUFFER_DATA_LENGTH(pNb) >= ETH_HEADER_LEN_802_3 &&
eth->e802_3.llc.dsap == 0xaa &&
eth->e802_3.llc.ssap == 0xaa &&
eth->e802_3.llc.control == ETH_LLC_CONTROL_UFRAME &&
@@ -285,7 +283,7 @@ OvsExtractFlow(const NET_BUFFER_LIST *packet,
flow->l2.keyLen += OVS_IP_KEY_SIZE;
layers->isIPv4 = 1;
- nh = OvsGetIp(packet, layers->l3Offset, &ip_storage);
+ nh = OvsGetIp(pNb, layers->l3Offset, &ip_storage);
if (nh) {
layers->l4Offset = layers->l3Offset + nh->ihl * 4;
@@ -309,14 +307,14 @@ OvsExtractFlow(const NET_BUFFER_LIST *packet,
if (!(nh->frag_off & htons(IP_OFFSET))) {
if (ipKey->nwProto == SOCKET_IPPROTO_TCP) {
- OvsParseTcp(packet, &ipKey->l4, layers);
+ OvsParseTcp(pNb, &ipKey->l4, layers);
} else if (ipKey->nwProto == SOCKET_IPPROTO_UDP) {
- OvsParseUdp(packet, &ipKey->l4, layers);
+ OvsParseUdp(pNb, &ipKey->l4, layers);
} else if (ipKey->nwProto == SOCKET_IPPROTO_ICMP) {
ICMPHdr icmpStorage;
const ICMPHdr *icmp;
- icmp = OvsGetIcmp(packet, layers->l4Offset, &icmpStorage);
+ icmp = OvsGetIcmp(pNb, layers->l4Offset, &icmpStorage);
if (icmp) {
ipKey->l4.tpSrc = htons(icmp->type);
ipKey->l4.tpDst = htons(icmp->code);
@@ -331,7 +329,7 @@ OvsExtractFlow(const NET_BUFFER_LIST *packet,
} else if (flow->l2.dlType == htons(ETH_TYPE_IPV6)) {
NDIS_STATUS status;
flow->l2.keyLen += OVS_IPV6_KEY_SIZE;
- status = OvsParseIPv6(packet, flow, layers);
+ status = OvsParseIPv6(pNb, flow, layers);
if (status != NDIS_STATUS_SUCCESS) {
memset(&flow->ipv6Key, 0, sizeof (Ipv6Key));
return status;
@@ -342,11 +340,11 @@ OvsExtractFlow(const NET_BUFFER_LIST *packet,
flow->ipv6Key.pad = 0;
if (flow->ipv6Key.nwProto == SOCKET_IPPROTO_TCP) {
- OvsParseTcp(packet, &(flow->ipv6Key.l4), layers);
+ OvsParseTcp(pNb, &(flow->ipv6Key.l4), layers);
} else if (flow->ipv6Key.nwProto == SOCKET_IPPROTO_UDP) {
- OvsParseUdp(packet, &(flow->ipv6Key.l4), layers);
+ OvsParseUdp(pNb, &(flow->ipv6Key.l4), layers);
} else if (flow->ipv6Key.nwProto == SOCKET_IPPROTO_ICMPV6) {
- OvsParseIcmpV6(packet, flow, layers);
+ OvsParseIcmpV6(pNb, flow, layers);
flow->l2.keyLen += (OVS_ICMPV6_KEY_SIZE - OVS_IPV6_KEY_SIZE);
}
} else if (flow->l2.dlType == htons(ETH_TYPE_ARP)) {
@@ -357,7 +355,7 @@ OvsExtractFlow(const NET_BUFFER_LIST *packet,
((UINT64 *)arpKey)[1] = 0;
((UINT64 *)arpKey)[2] = 0;
flow->l2.keyLen += OVS_ARP_KEY_SIZE;
- arp = OvsGetArp(packet, layers->l3Offset, &arpStorage);
+ arp = OvsGetArp(pNb, layers->l3Offset, &arpStorage);
if (arp && arp->ea_hdr.ar_hrd == htons(1) &&
arp->ea_hdr.ar_pro == htons(ETH_TYPE_IPV4) &&
arp->ea_hdr.ar_hln == ETH_ADDR_LENGTH &&
diff --git a/datapath-windows/ovsext/OvsFlow.h
b/datapath-windows/ovsext/OvsFlow.h
index 93368b3..aeec803 100644
--- a/datapath-windows/ovsext/OvsFlow.h
+++ b/datapath-windows/ovsext/OvsFlow.h
@@ -50,13 +50,13 @@ NDIS_STATUS OvsDeleteFlowTable(OVS_DATAPATH *datapath);
NDIS_STATUS OvsAllocateFlowTable(OVS_DATAPATH *datapath,
POVS_SWITCH_CONTEXT switchContext);
-NDIS_STATUS OvsExtractFlow(const NET_BUFFER_LIST *pkt, UINT32 inPort,
+NDIS_STATUS OvsExtractFlow(const NET_BUFFER *pNb, UINT32 inPort,
OvsFlowKey *flow, POVS_PACKET_HDR_INFO layers,
- OvsIPv4TunnelKey *tunKey);
+ OvsIPv4TunnelKey *tunKey, VOID* vlanTagValue);
OvsFlow *OvsLookupFlow(OVS_DATAPATH *datapath, const OvsFlowKey *key,
UINT64 *hash, BOOLEAN hashValid);
UINT64 OvsHashFlow(const OvsFlowKey *key);
-VOID OvsFlowUsed(OvsFlow *flow, const NET_BUFFER_LIST *pkt,
+VOID OvsFlowUsed(OvsFlow *flow, const NET_BUFFER *pkt,
const POVS_PACKET_HDR_INFO layers);
NTSTATUS OvsDumpFlowIoctl(PVOID inputBuffer, UINT32 inputLength,
diff --git a/datapath-windows/ovsext/OvsPacketIO.c
b/datapath-windows/ovsext/OvsPacketIO.c
index 39e5703..7896e7b 100644
--- a/datapath-windows/ovsext/OvsPacketIO.c
+++ b/datapath-windows/ovsext/OvsPacketIO.c
@@ -211,6 +211,7 @@ OvsStartNBLIngress(POVS_SWITCH_CONTEXT switchContext,
OvsFlowKey key;
UINT64 hash;
PNET_BUFFER curNb;
+ VOID* vlanTagValue;
nextNbl = curNbl->Next;
curNbl->Next = NULL;
@@ -223,6 +224,7 @@ OvsStartNBLIngress(POVS_SWITCH_CONTEXT switchContext,
} else {
POVS_BUFFER_CONTEXT ctx;
OvsFlow *flow;
+ NET_BUFFER_LIST* pNewNbl;
fwdDetail = NET_BUFFER_LIST_SWITCH_FORWARDING_DETAIL(curNbl);
sourcePort = fwdDetail->SourcePortId;
@@ -261,53 +263,76 @@ OvsStartNBLIngress(POVS_SWITCH_CONTEXT switchContext,
vport->stats.rxPackets++;
vport->stats.rxBytes += NET_BUFFER_DATA_LENGTH(curNb);
+ vlanTagValue = NET_BUFFER_LIST_INFO(curNbl,
+ Ieee8021QNetBufferListInfo);
- status = OvsExtractFlow(curNbl, vport->portNo, &key, &layers,
NULL);
- if (status != NDIS_STATUS_SUCCESS) {
- RtlInitUnicodeString(&filterReason, L"OVS-Flow extract
failed");
- goto dropit;
- }
+ pNewNbl = OvsPartialCopyToMultipleNBLs(switchContext, curNbl,
+ 0, 0, TRUE);
+ if (!pNewNbl) {
+ RtlInitUnicodeString(&filterReason,
+ L"Cannot allocate new NBL: partial copy NB to "
+ L"multiple NBLs.");
+
+ OvsStartNBLIngressError(switchContext, curNbl,
+ sendCompleteFlags, &filterReason,
+ NDIS_STATUS_RESOURCES);
- ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
- OvsAcquireDatapathRead(datapath, &dpLockState, dispatch);
-
- flow = OvsLookupFlow(datapath, &key, &hash, FALSE);
- if (flow) {
- OvsFlowUsed(flow, curNbl, &layers);
- datapath->hits++;
- /* If successful, OvsActionsExecute() consumes the NBL.
- * Otherwise, it adds it to the completionList. No need to
- * check the return value. */
- OvsActionsExecute(switchContext, &completionList, curNbl,
- portNo, SendFlags, &key, &hash, &layers,
- flow->actions, flow->actionsLen);
- OvsReleaseDatapath(datapath, &dpLockState);
NdisReleaseRWLock(switchContext->dispatchLock, &lockState);
continue;
- } else {
- OvsReleaseDatapath(datapath, &dpLockState);
-
- datapath->misses++;
- status = OvsCreateAndAddPackets(OVS_DEFAULT_PACKET_QUEUE,
- NULL, 0, OVS_PACKET_CMD_MISS,
- portNo,
- key.tunKey.dst != 0 ?
- (OvsIPv4TunnelKey
*)&key.tunKey :
- NULL, curNbl,
- sourcePort ==
- switchContext->externalPortId,
- &layers, switchContext,
- &missedPackets, &num);
- if (status == NDIS_STATUS_SUCCESS) {
- /* Complete the packet since it was copied to user
- * buffer. */
- RtlInitUnicodeString(&filterReason,
- L"OVS-Dropped since packet was copied to userspace");
+ }
+
+ OVS_NBL_FOR_EACH(pCurNbl, pNewNbl)
+ {
+ status = OvsExtractFlow(NET_BUFFER_LIST_FIRST_NB(pCurNbl),
+ vport->portNo, &key, &layers, NULL, vlanTagValue);
+ if (status != NDIS_STATUS_SUCCESS) {
+ RtlInitUnicodeString(&filterReason, L"OVS-Flow extract
failed");
+ goto dropit;
+ }
+
+ ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
+ OvsAcquireDatapathRead(datapath, &dpLockState, dispatch);
+
+ flow = OvsLookupFlow(datapath, &key, &hash, FALSE);
+ if (flow) {
+ OvsFlowUsed(flow, NET_BUFFER_LIST_FIRST_NB(pCurNbl),
&layers);
+ datapath->hits++;
+
+ /* If successful, OvsActionsExecute() consumes the NBL.
+ * Otherwise, it adds it to the completionList. No need to
+ * check the return value. */
+ OvsActionsExecute(switchContext, &completionList, pCurNbl,
+ portNo, SendFlags, &key, &hash, &layers,
+ flow->actions, flow->actionsLen);
+
+ OvsReleaseDatapath(datapath, &dpLockState);
+ NdisReleaseRWLock(switchContext->dispatchLock, &lockState);
+ continue;
} else {
- RtlInitUnicodeString(&filterReason,
- L"OVS-Dropped due to failure to queue to userspace");
+ OvsReleaseDatapath(datapath, &dpLockState);
+
+ datapath->misses++;
+ status = OvsCreateAndAddPackets(OVS_DEFAULT_PACKET_QUEUE,
+ NULL, 0, OVS_PACKET_CMD_MISS,
+ portNo,
+ key.tunKey.dst != 0 ?
+ (OvsIPv4TunnelKey *)&key.tunKey :
+ NULL, curNbl,
+ sourcePort ==
+ switchContext->externalPortId,
+ &layers, switchContext,
+ &missedPackets, &num);
+ if (status == NDIS_STATUS_SUCCESS) {
+ /* Complete the packet since it was copied to user
+ * buffer. */
+ RtlInitUnicodeString(&filterReason,
+ L"OVS-Dropped since packet was copied to
userspace");
+ } else {
+ RtlInitUnicodeString(&filterReason,
+ L"OVS-Dropped due to failure to queue to
userspace");
+ }
+ goto dropit;
}
- goto dropit;
}
dropit:
diff --git a/datapath-windows/ovsext/OvsPacketParser.c
b/datapath-windows/ovsext/OvsPacketParser.c
index 0a93435..666d3d5 100644
--- a/datapath-windows/ovsext/OvsPacketParser.c
+++ b/datapath-windows/ovsext/OvsPacketParser.c
@@ -18,13 +18,12 @@
//XXX consider moving to NdisGetDataBuffer.
const VOID *
-OvsGetPacketBytes(const NET_BUFFER_LIST *nbl,
+OvsGetPacketBytes(const NET_BUFFER *netBuffer,
UINT32 len,
UINT32 srcOffset,
VOID *storage)
{
NDIS_STATUS status = NDIS_STATUS_SUCCESS;
- PNET_BUFFER netBuffer = NET_BUFFER_LIST_FIRST_NB(nbl);
PMDL currentMdl;
BOOLEAN firstMDL = TRUE;
ULONG destOffset = 0;
@@ -83,7 +82,7 @@ OvsGetPacketBytes(const NET_BUFFER_LIST *nbl,
}
NDIS_STATUS
-OvsParseIPv6(const NET_BUFFER_LIST *packet,
+OvsParseIPv6(const NET_BUFFER *packet,
OvsFlowKey *key,
POVS_PACKET_HDR_INFO layers)
{
@@ -142,7 +141,7 @@ OvsParseIPv6(const NET_BUFFER_LIST *packet,
len = extHdr->hdrExtLen;
ofs += nextHdr == SOCKET_IPPROTO_AH ? (len + 2) * 4 : (len + 1) *
8;
nextHdr = extHdr->nextHeader;
- if (OvsPacketLenNBL(packet) < ofs) {
+ if (NET_BUFFER_DATA_LENGTH(packet) < ofs) {
return NDIS_STATUS_FAILURE;
}
} else if (nextHdr == SOCKET_IPPROTO_FRAGMENT) {
@@ -177,12 +176,12 @@ OvsParseIPv6(const NET_BUFFER_LIST *packet,
}
VOID
-OvsParseTcp(const NET_BUFFER_LIST *packet,
+OvsParseTcp(const NET_BUFFER* pNb,
L4Key *flow,
POVS_PACKET_HDR_INFO layers)
{
TCPHdr tcpStorage;
- const TCPHdr *tcp = OvsGetTcp(packet, layers->l4Offset, &tcpStorage);
+ const TCPHdr *tcp = OvsGetTcp(pNb, layers->l4Offset, &tcpStorage);
if (tcp) {
flow->tpSrc = tcp->source;
flow->tpDst = tcp->dest;
@@ -192,7 +191,7 @@ OvsParseTcp(const NET_BUFFER_LIST *packet,
}
VOID
-OvsParseUdp(const NET_BUFFER_LIST *packet,
+OvsParseUdp(const NET_BUFFER *packet,
L4Key *flow,
POVS_PACKET_HDR_INFO layers)
{
@@ -210,7 +209,7 @@ OvsParseUdp(const NET_BUFFER_LIST *packet,
}
NDIS_STATUS
-OvsParseIcmpV6(const NET_BUFFER_LIST *packet,
+OvsParseIcmpV6(const NET_BUFFER *packet,
OvsFlowKey *key,
POVS_PACKET_HDR_INFO layers)
{
@@ -249,7 +248,7 @@ OvsParseIcmpV6(const NET_BUFFER_LIST *packet,
}
flow->ndTarget = *ndTarget;
- while ((UINT32)(ofs + 8) <= OvsPacketLenNBL(packet)) {
+ while ((UINT32)(ofs + 8) <= NET_BUFFER_DATA_LENGTH(packet)) {
/*
* The minimum size of an option is 8 bytes, which also is
* the size of Ethernet link-layer options.
@@ -264,7 +263,8 @@ OvsParseIcmpV6(const NET_BUFFER_LIST *packet,
}
optLen = ndOpt->len * 8;
- if (!optLen || (UINT32)(ofs + optLen) > OvsPacketLenNBL(packet)) {
+ if (!optLen || (UINT32)(ofs + optLen) >
+ NET_BUFFER_DATA_LENGTH(packet)) {
goto invalid;
}
diff --git a/datapath-windows/ovsext/OvsPacketParser.h
b/datapath-windows/ovsext/OvsPacketParser.h
index ab3c613..aaf3877 100644
--- a/datapath-windows/ovsext/OvsPacketParser.h
+++ b/datapath-windows/ovsext/OvsPacketParser.h
@@ -20,15 +20,15 @@
#include "precomp.h"
#include "OvsNetProto.h"
-const VOID* OvsGetPacketBytes(const NET_BUFFER_LIST *_pNB, UINT32 len,
+const VOID* OvsGetPacketBytes(const NET_BUFFER *pNB, UINT32 len,
UINT32 SrcOffset, VOID *storage);
-NDIS_STATUS OvsParseIPv6(const NET_BUFFER_LIST *packet, OvsFlowKey *key,
+NDIS_STATUS OvsParseIPv6(const NET_BUFFER *packet, OvsFlowKey *key,
POVS_PACKET_HDR_INFO layers);
-VOID OvsParseTcp(const NET_BUFFER_LIST *packet, L4Key *flow,
+VOID OvsParseTcp(const NET_BUFFER* pNb, L4Key *flow,
POVS_PACKET_HDR_INFO layers);
-VOID OvsParseUdp(const NET_BUFFER_LIST *packet, L4Key *flow,
+VOID OvsParseUdp(const NET_BUFFER *packet, L4Key *flow,
POVS_PACKET_HDR_INFO layers);
-NDIS_STATUS OvsParseIcmpV6(const NET_BUFFER_LIST *packet, OvsFlowKey *key,
+NDIS_STATUS OvsParseIcmpV6(const NET_BUFFER *packet, OvsFlowKey *key,
POVS_PACKET_HDR_INFO layers);
static __inline ULONG
@@ -58,7 +58,7 @@ OvsPacketLenNBL(const NET_BUFFER_LIST *_pNB)
* which C does not allow.
*/
static UINT16
-OvsGetTcpCtl(const NET_BUFFER_LIST *packet, // IN
+OvsGetTcpCtl(const NET_BUFFER *packet, // IN
const POVS_PACKET_HDR_INFO layers) // IN
{
#define TCP_CTL_OFS 12 // Offset of "ctl" field in TCP header.
@@ -74,7 +74,7 @@ OvsGetTcpCtl(const NET_BUFFER_LIST *packet, // IN
static UINT8
-OvsGetTcpFlags(const NET_BUFFER_LIST *packet, // IN
+OvsGetTcpFlags(const NET_BUFFER *packet, // IN
const OvsFlowKey *key, // IN
const POVS_PACKET_HDR_INFO layers) // IN
{
@@ -88,7 +88,7 @@ OvsGetTcpFlags(const NET_BUFFER_LIST *packet, // IN
}
static const EtherArp *
-OvsGetArp(const NET_BUFFER_LIST *packet,
+OvsGetArp(const NET_BUFFER *packet,
UINT32 ofs,
EtherArp *storage)
{
@@ -96,14 +96,14 @@ OvsGetArp(const NET_BUFFER_LIST *packet,
}
static const IPHdr *
-OvsGetIp(const NET_BUFFER_LIST *packet,
+OvsGetIp(const NET_BUFFER* pNb,
UINT32 ofs,
IPHdr *storage)
{
- const IPHdr *ip = OvsGetPacketBytes(packet, sizeof *ip, ofs, storage);
+ const IPHdr *ip = OvsGetPacketBytes(pNb, sizeof *ip, ofs, storage);
if (ip) {
int ipLen = ip->ihl * 4;
- if (ipLen >= sizeof *ip && OvsPacketLenNBL(packet) >= ofs + ipLen) {
+ if (ipLen >= sizeof *ip && NET_BUFFER_DATA_LENGTH(pNb) >= ofs + ipLen)
{
return ip;
}
}
@@ -111,14 +111,14 @@ OvsGetIp(const NET_BUFFER_LIST *packet,
}
static const TCPHdr *
-OvsGetTcp(const NET_BUFFER_LIST *packet,
+OvsGetTcp(const NET_BUFFER *packet,
UINT32 ofs,
TCPHdr *storage)
{
const TCPHdr *tcp = OvsGetPacketBytes(packet, sizeof *tcp, ofs, storage);
if (tcp) {
int tcpLen = tcp->doff * 4;
- if (tcpLen >= sizeof *tcp && OvsPacketLenNBL(packet) >= ofs + tcpLen) {
+ if (tcpLen >= sizeof *tcp && NET_BUFFER_DATA_LENGTH(packet) >= ofs +
tcpLen) {
return tcp;
}
}
@@ -126,7 +126,7 @@ OvsGetTcp(const NET_BUFFER_LIST *packet,
}
static const UDPHdr *
-OvsGetUdp(const NET_BUFFER_LIST *packet,
+OvsGetUdp(const NET_BUFFER *packet,
UINT32 ofs,
UDPHdr *storage)
{
@@ -134,7 +134,7 @@ OvsGetUdp(const NET_BUFFER_LIST *packet,
}
static const ICMPHdr *
-OvsGetIcmp(const NET_BUFFER_LIST *packet,
+OvsGetIcmp(const NET_BUFFER *packet,
UINT32 ofs,
ICMPHdr *storage)
{
diff --git a/datapath-windows/ovsext/OvsTunnel.c
b/datapath-windows/ovsext/OvsTunnel.c
index b5a369a..a1387cb 100644
--- a/datapath-windows/ovsext/OvsTunnel.c
+++ b/datapath-windows/ovsext/OvsTunnel.c
@@ -228,6 +228,7 @@ OvsInjectPacketThroughActions(PNET_BUFFER_LIST pNbl,
OVS_DATAPATH *datapath = &gOvsSwitchContext->datapath;
ASSERT(gOvsSwitchContext);
+ ASSERT(pNbl->FirstNetBuffer->Next == NULL);
/* Fill the tunnel key */
status = OvsSlowPathDecapVxlan(pNbl, &tunnelKey);
@@ -265,6 +266,7 @@ OvsInjectPacketThroughActions(PNET_BUFFER_LIST pNbl,
UINT64 hash;
PNET_BUFFER curNb;
OvsFlow *flow;
+ VOID* vlanTagValue;
fwdDetail = NET_BUFFER_LIST_SWITCH_FORWARDING_DETAIL(pNbl);
@@ -295,20 +297,22 @@ OvsInjectPacketThroughActions(PNET_BUFFER_LIST pNbl,
ASSERT(vport->ovsType == OVSWIN_VPORT_TYPE_VXLAN);
portNo = vport->portNo;
+ vlanTagValue = NET_BUFFER_LIST_INFO(pNbl, Ieee8021QNetBufferListInfo);
- status = OvsExtractFlow(pNbl, portNo, &key, &layers, &tunnelKey);
+ status = OvsExtractFlow(curNb, portNo, &key, &layers,
+ &tunnelKey, vlanTagValue);
if (status != NDIS_STATUS_SUCCESS) {
goto unlockAndDrop;
}
flow = OvsLookupFlow(datapath, &key, &hash, FALSE);
if (flow) {
- OvsFlowUsed(flow, pNbl, &layers);
+ OvsFlowUsed(flow, curNb, &layers);
datapath->hits++;
OvsActionsExecute(gOvsSwitchContext, &completionList, pNbl,
- portNo, SendFlags, &key, &hash, &layers,
- flow->actions, flow->actionsLen);
+ portNo, SendFlags, &key, &hash, &layers,
+ flow->actions, flow->actionsLen);
OvsReleaseDatapath(datapath, &dpLockState);
} else {
@@ -316,8 +320,8 @@ OvsInjectPacketThroughActions(PNET_BUFFER_LIST pNbl,
datapath->misses++;
elem = OvsCreateQueuePacket(1, NULL, 0, OVS_PACKET_CMD_MISS,
- portNo, &key.tunKey, pNbl, curNb,
- TRUE, &layers);
+ portNo, &key.tunKey, pNbl, curNb,
+ TRUE, &layers);
if (elem) {
/* Complete the packet since it was copied to user buffer. */
InsertTailList(&missedPackets, &elem->link);
diff --git a/datapath-windows/ovsext/OvsUser.c
b/datapath-windows/ovsext/OvsUser.c
index 8271d52..267ef1b 100644
--- a/datapath-windows/ovsext/OvsUser.c
+++ b/datapath-windows/ovsext/OvsUser.c
@@ -314,6 +314,7 @@ OvsExecuteDpIoctl(PVOID inputBuffer,
PNDIS_SWITCH_FORWARDING_DETAIL_NET_BUFFER_LIST_INFO fwdDetail;
OvsFlowKey key;
OVS_PACKET_HDR_INFO layers;
+ VOID* vlanTagValue;
if (inputLength < sizeof(*execute) || outputLength != 0) {
return STATUS_INFO_LENGTH_MISMATCH;
@@ -355,17 +356,22 @@ OvsExecuteDpIoctl(PVOID inputBuffer,
fwdDetail->SourceNicIndex = 0;
// XXX: Figure out if any of the other members of fwdDetail need to be set.
- ndisStatus = OvsExtractFlow(pNbl, fwdDetail->SourcePortId, &key, &layers,
- NULL);
+ ASSERT(pNbl->FirstNetBuffer->Next == NULL);
+
+ vlanTagValue = NET_BUFFER_LIST_INFO(pNbl, Ieee8021QNetBufferListInfo);
+
+ ndisStatus = OvsExtractFlow(NET_BUFFER_LIST_FIRST_NB(pNbl),
+ fwdDetail->SourcePortId, &key, &layers,
+ NULL, vlanTagValue);
if (ndisStatus == NDIS_STATUS_SUCCESS) {
ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
NdisAcquireRWLockRead(gOvsSwitchContext->dispatchLock, &lockState,
- NDIS_RWL_AT_DISPATCH_LEVEL);
+ NDIS_RWL_AT_DISPATCH_LEVEL);
ndisStatus = OvsActionsExecute(gOvsSwitchContext, NULL, pNbl,
- 0, // XXX: we are passing 0 for srcVportNo
- NDIS_SEND_FLAGS_SWITCH_DESTINATION_GROUP,
- &key, NULL, &layers, actions,
- execute->actionsLen);
+ 0, // XXX: we are passing 0 for srcVportNo
+ NDIS_SEND_FLAGS_SWITCH_DESTINATION_GROUP,
+ &key, NULL, &layers, actions,
+ execute->actionsLen);
pNbl = NULL;
NdisReleaseRWLock(gOvsSwitchContext->dispatchLock, &lockState);
}
@@ -820,6 +826,8 @@ OvsCreateAndAddPackets(UINT32 queueId,
PNET_BUFFER_LIST newNbl = NULL;
PNET_BUFFER nb;
+ ASSERT(nbl->FirstNetBuffer->Next == NULL);
+
if (hdrInfo->isTcp) {
NDIS_TCP_LARGE_SEND_OFFLOAD_NET_BUFFER_LIST_INFO tsoInfo;
UINT32 packetLength;
diff --git a/datapath-windows/ovsext/OvsVxlan.c
b/datapath-windows/ovsext/OvsVxlan.c
index 63909ae..953dfc7 100644
--- a/datapath-windows/ovsext/OvsVxlan.c
+++ b/datapath-windows/ovsext/OvsVxlan.c
@@ -116,6 +116,8 @@ OvsDoEncapVxlan(PNET_BUFFER_LIST curNbl,
UINT32 headRoom = OvsGetVxlanTunHdrSize();
UINT32 packetLength;
+ ASSERT(curNbl->FirstNetBuffer->Next == NULL);
+
/*
* XXX: the assumption currently is that the NBL is owned by OVS, and
* headroom has already been allocated as part of allocating the NBL and
@@ -286,13 +288,19 @@ OvsIpHlprCbVxlan(PNET_BUFFER_LIST curNbl,
OvsFlowKey key;
NDIS_STATUS status;
UNREFERENCED_PARAMETER(inPort);
-
- status = OvsExtractFlow(curNbl, inPort, &key, &layers, NULL);
- if (result == STATUS_SUCCESS) {
- status = OvsDoEncapVxlan(curNbl, tunKey, fwdInfo, &layers,
+ VOID* vlanTagValue;
+
+ vlanTagValue = NET_BUFFER_LIST_INFO(curNbl, Ieee8021QNetBufferListInfo);
+ for (NET_BUFFER* pNb = NET_BUFFER_LIST_FIRST_NB(curNbl);
+ pNb != NULL; pNb = NET_BUFFER_NEXT_NB(pNb))
+ {
+ status = OvsExtractFlow(pNb, inPort, &key, &layers, NULL,
vlanTagValue);
+ if (result == STATUS_SUCCESS) {
+ status = OvsDoEncapVxlan(curNbl, tunKey, fwdInfo, &layers,
(POVS_SWITCH_CONTEXT)cbData1, NULL);
- } else {
- status = NDIS_STATUS_FAILURE;
+ } else {
+ status = NDIS_STATUS_FAILURE;
+ }
}
if (status != NDIS_STATUS_SUCCESS) {
@@ -457,9 +465,16 @@ OvsSlowPathDecapVxlan(const PNET_BUFFER_LIST packet,
OVS_PACKET_HDR_INFO layers;
layers.value = 0;
+ ASSERT(packet->FirstNetBuffer->Next == NULL);
do {
- nh = OvsGetIp(packet, layers.l3Offset, &ip_storage);
+ NET_BUFFER* pNb = NET_BUFFER_LIST_FIRST_NB(packet);
+
+ /*
+ * given that it is an encapsulated packet (UDP),
+ * we can use the first NB for checks
+ */
+ nh = OvsGetIp(pNb, layers.l3Offset, &ip_storage);
if (nh) {
layers.l4Offset = layers.l3Offset + nh->ihl * 4;
} else {
@@ -467,7 +482,7 @@ OvsSlowPathDecapVxlan(const PNET_BUFFER_LIST packet,
}
/* make sure it's a VXLAN packet */
- udp = OvsGetUdp(packet, layers.l4Offset, &udpStorage);
+ udp = OvsGetUdp(pNb, layers.l4Offset, &udpStorage);
if (udp) {
layers.l7Offset = layers.l4Offset + sizeof *udp;
} else {
@@ -477,7 +492,11 @@ OvsSlowPathDecapVxlan(const PNET_BUFFER_LIST packet,
/* XXX Should be tested against the dynamic port # in the VXLAN vport
*/
ASSERT(udp->dest == RtlUshortByteSwap(VXLAN_UDP_PORT));
- VxlanHeader = (VXLANHdr *)OvsGetPacketBytes(packet,
+ /*
+ * we may have multiple VXLAN packets here that need to be decapsulated
+ * but for the VXLAN header, we need only the first NET_BUFFER
+ */
+ VxlanHeader = (VXLANHdr *)OvsGetPacketBytes(pNb,
sizeof(*VxlanHeader),
layers.l7Offset,
&VxlanHeaderBuffer);
--
1.8.3.msysgit.0
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