X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=NetworkPkg%2FUefiPxeBcDxe%2FPxeBcDhcp4.c;h=bb65445fc9f0f3b95b6285ea9bfb0a46579f927f;hp=60942fb908a7e39bd8f9d77064b1d06519629140;hb=ccd05ddd50d8c95c2624b79cace2afdc26e89c9e;hpb=4496ff751f7843fbbedf91f1a58212eb7c9a1ca8
diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c b/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c
index 60942fb908..bb65445fc9 100644
--- a/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c
+++ b/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c
@@ -1,7 +1,7 @@
/** @file
Functions implementation related with DHCPv4 for UefiPxeBc Driver.
- Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.
+ Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -19,13 +19,13 @@
// This is a map from the interested DHCP4 option tags' index to the tag value.
//
UINT8 mInterestedDhcp4Tags[PXEBC_DHCP4_TAG_INDEX_MAX] = {
- PXEBC_DHCP4_TAG_BOOTFILE_LEN,
- PXEBC_DHCP4_TAG_VENDOR,
- PXEBC_DHCP4_TAG_OVERLOAD,
- PXEBC_DHCP4_TAG_MSG_TYPE,
- PXEBC_DHCP4_TAG_SERVER_ID,
- PXEBC_DHCP4_TAG_CLASS_ID,
- PXEBC_DHCP4_TAG_BOOTFILE
+ DHCP4_TAG_BOOTFILE_LEN,
+ DHCP4_TAG_VENDOR,
+ DHCP4_TAG_OVERLOAD,
+ DHCP4_TAG_MSG_TYPE,
+ DHCP4_TAG_SERVER_ID,
+ DHCP4_TAG_VENDOR_CLASS_ID,
+ DHCP4_TAG_BOOTFILE
};
//
@@ -58,7 +58,7 @@ PxeBcParseDhcp4Options (
Option = (EFI_DHCP4_PACKET_OPTION *) Buffer;
Offset = 0;
- while (Offset < Length && Option->OpCode != PXEBC_DHCP4_TAG_EOP) {
+ while (Offset < Length && Option->OpCode != DHCP4_TAG_EOP) {
if (Option->OpCode == OptTag) {
//
@@ -70,7 +70,7 @@ PxeBcParseDhcp4Options (
//
// Skip the current option to the next.
//
- if (Option->OpCode == PXEBC_DHCP4_TAG_PAD) {
+ if (Option->OpCode == DHCP4_TAG_PAD) {
Offset++;
} else {
Offset += Option->Length + 2;
@@ -108,7 +108,7 @@ PxeBcParseVendorOptions (
ASSERT (PxeOption != NULL);
- while ((Offset < VendorOptionLen) && (PxeOption->OpCode != PXEBC_DHCP4_TAG_EOP)) {
+ while ((Offset < VendorOptionLen) && (PxeOption->OpCode != DHCP4_TAG_EOP)) {
//
// Parse all the interesting PXE vendor options one by one.
//
@@ -201,7 +201,7 @@ PxeBcParseVendorOptions (
//
// Continue to the next option.
//
- if (PxeOption->OpCode == PXEBC_DHCP4_TAG_PAD) {
+ if (PxeOption->OpCode == DHCP4_TAG_PAD) {
Offset++;
} else {
Offset = (UINT8) (Offset + PxeOption->Length + 2);
@@ -243,7 +243,7 @@ PxeBcBuildDhcp4Options (
//
// Append message type.
//
- OptList[Index]->OpCode = PXEBC_DHCP4_TAG_MSG_TYPE;
+ OptList[Index]->OpCode = DHCP4_TAG_MSG_TYPE;
OptList[Index]->Length = 1;
OptEnt.Mesg = (PXEBC_DHCP4_OPTION_MESG *) OptList[Index]->Data;
OptEnt.Mesg->Type = PXEBC_DHCP4_MSG_TYPE_REQUEST;
@@ -253,10 +253,10 @@ PxeBcBuildDhcp4Options (
//
// Append max message size.
//
- OptList[Index]->OpCode = PXEBC_DHCP4_TAG_MAXMSG;
+ OptList[Index]->OpCode = DHCP4_TAG_MAXMSG;
OptList[Index]->Length = (UINT8) sizeof (PXEBC_DHCP4_OPTION_MAX_MESG_SIZE);
OptEnt.MaxMesgSize = (PXEBC_DHCP4_OPTION_MAX_MESG_SIZE *) OptList[Index]->Data;
- Value = NTOHS (PXEBC_DHCP4_PACKET_MAX_SIZE - 8);
+ Value = NTOHS (PXEBC_DHCP4_PACKET_MAX_SIZE);
CopyMem (&OptEnt.MaxMesgSize->Size, &Value, sizeof (UINT16));
Index++;
OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
@@ -265,36 +265,36 @@ PxeBcBuildDhcp4Options (
//
// Append parameter request list option.
//
- OptList[Index]->OpCode = PXEBC_DHCP4_TAG_PARA_LIST;
+ OptList[Index]->OpCode = DHCP4_TAG_PARA_LIST;
OptList[Index]->Length = 35;
OptEnt.Para = (PXEBC_DHCP4_OPTION_PARA *) OptList[Index]->Data;
- OptEnt.Para->ParaList[0] = PXEBC_DHCP4_TAG_NETMASK;
- OptEnt.Para->ParaList[1] = PXEBC_DHCP4_TAG_TIME_OFFSET;
- OptEnt.Para->ParaList[2] = PXEBC_DHCP4_TAG_ROUTER;
- OptEnt.Para->ParaList[3] = PXEBC_DHCP4_TAG_TIME_SERVER;
- OptEnt.Para->ParaList[4] = PXEBC_DHCP4_TAG_NAME_SERVER;
- OptEnt.Para->ParaList[5] = PXEBC_DHCP4_TAG_DNS_SERVER;
- OptEnt.Para->ParaList[6] = PXEBC_DHCP4_TAG_HOSTNAME;
- OptEnt.Para->ParaList[7] = PXEBC_DHCP4_TAG_BOOTFILE_LEN;
- OptEnt.Para->ParaList[8] = PXEBC_DHCP4_TAG_DOMAINNAME;
- OptEnt.Para->ParaList[9] = PXEBC_DHCP4_TAG_ROOTPATH;
- OptEnt.Para->ParaList[10] = PXEBC_DHCP4_TAG_EXTEND_PATH;
- OptEnt.Para->ParaList[11] = PXEBC_DHCP4_TAG_EMTU;
- OptEnt.Para->ParaList[12] = PXEBC_DHCP4_TAG_TTL;
- OptEnt.Para->ParaList[13] = PXEBC_DHCP4_TAG_BROADCAST;
- OptEnt.Para->ParaList[14] = PXEBC_DHCP4_TAG_NIS_DOMAIN;
- OptEnt.Para->ParaList[15] = PXEBC_DHCP4_TAG_NIS_SERVER;
- OptEnt.Para->ParaList[16] = PXEBC_DHCP4_TAG_NTP_SERVER;
- OptEnt.Para->ParaList[17] = PXEBC_DHCP4_TAG_VENDOR;
- OptEnt.Para->ParaList[18] = PXEBC_DHCP4_TAG_REQUEST_IP;
- OptEnt.Para->ParaList[19] = PXEBC_DHCP4_TAG_LEASE;
- OptEnt.Para->ParaList[20] = PXEBC_DHCP4_TAG_SERVER_ID;
- OptEnt.Para->ParaList[21] = PXEBC_DHCP4_TAG_T1;
- OptEnt.Para->ParaList[22] = PXEBC_DHCP4_TAG_T2;
- OptEnt.Para->ParaList[23] = PXEBC_DHCP4_TAG_CLASS_ID;
- OptEnt.Para->ParaList[24] = PXEBC_DHCP4_TAG_TFTP;
- OptEnt.Para->ParaList[25] = PXEBC_DHCP4_TAG_BOOTFILE;
- OptEnt.Para->ParaList[26] = PXEBC_PXE_DHCP4_TAG_UUID;
+ OptEnt.Para->ParaList[0] = DHCP4_TAG_NETMASK;
+ OptEnt.Para->ParaList[1] = DHCP4_TAG_TIME_OFFSET;
+ OptEnt.Para->ParaList[2] = DHCP4_TAG_ROUTER;
+ OptEnt.Para->ParaList[3] = DHCP4_TAG_TIME_SERVER;
+ OptEnt.Para->ParaList[4] = DHCP4_TAG_NAME_SERVER;
+ OptEnt.Para->ParaList[5] = DHCP4_TAG_DNS_SERVER;
+ OptEnt.Para->ParaList[6] = DHCP4_TAG_HOSTNAME;
+ OptEnt.Para->ParaList[7] = DHCP4_TAG_BOOTFILE_LEN;
+ OptEnt.Para->ParaList[8] = DHCP4_TAG_DOMAINNAME;
+ OptEnt.Para->ParaList[9] = DHCP4_TAG_ROOTPATH;
+ OptEnt.Para->ParaList[10] = DHCP4_TAG_EXTEND_PATH;
+ OptEnt.Para->ParaList[11] = DHCP4_TAG_EMTU;
+ OptEnt.Para->ParaList[12] = DHCP4_TAG_TTL;
+ OptEnt.Para->ParaList[13] = DHCP4_TAG_BROADCAST;
+ OptEnt.Para->ParaList[14] = DHCP4_TAG_NIS_DOMAIN;
+ OptEnt.Para->ParaList[15] = DHCP4_TAG_NIS_SERVER;
+ OptEnt.Para->ParaList[16] = DHCP4_TAG_NTP_SERVER;
+ OptEnt.Para->ParaList[17] = DHCP4_TAG_VENDOR;
+ OptEnt.Para->ParaList[18] = DHCP4_TAG_REQUEST_IP;
+ OptEnt.Para->ParaList[19] = DHCP4_TAG_LEASE;
+ OptEnt.Para->ParaList[20] = DHCP4_TAG_SERVER_ID;
+ OptEnt.Para->ParaList[21] = DHCP4_TAG_T1;
+ OptEnt.Para->ParaList[22] = DHCP4_TAG_T2;
+ OptEnt.Para->ParaList[23] = DHCP4_TAG_VENDOR_CLASS_ID;
+ OptEnt.Para->ParaList[24] = DHCP4_TAG_TFTP;
+ OptEnt.Para->ParaList[25] = DHCP4_TAG_BOOTFILE;
+ OptEnt.Para->ParaList[26] = DHCP4_TAG_UUID;
OptEnt.Para->ParaList[27] = 0x80;
OptEnt.Para->ParaList[28] = 0x81;
OptEnt.Para->ParaList[29] = 0x82;
@@ -309,7 +309,7 @@ PxeBcBuildDhcp4Options (
//
// Append UUID/Guid-based client identifier option
//
- OptList[Index]->OpCode = PXEBC_PXE_DHCP4_TAG_UUID;
+ OptList[Index]->OpCode = DHCP4_TAG_UUID;
OptList[Index]->Length = (UINT8) sizeof (PXEBC_DHCP4_OPTION_UUID);
OptEnt.Uuid = (PXEBC_DHCP4_OPTION_UUID *) OptList[Index]->Data;
OptEnt.Uuid->Type = 0;
@@ -320,13 +320,14 @@ PxeBcBuildDhcp4Options (
//
// Zero the Guid to indicate NOT programable if failed to get system Guid.
//
+ DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios table!\n"));
ZeroMem (OptEnt.Uuid->Guid, sizeof (EFI_GUID));
}
//
// Append client network device interface option
//
- OptList[Index]->OpCode = PXEBC_PXE_DHCP4_TAG_UNDI;
+ OptList[Index]->OpCode = DHCP4_TAG_UNDI;
OptList[Index]->Length = (UINT8) sizeof (PXEBC_DHCP4_OPTION_UNDI);
OptEnt.Undi = (PXEBC_DHCP4_OPTION_UNDI *) OptList[Index]->Data;
@@ -346,7 +347,7 @@ PxeBcBuildDhcp4Options (
//
// Append client system architecture option
//
- OptList[Index]->OpCode = PXEBC_PXE_DHCP4_TAG_ARCH;
+ OptList[Index]->OpCode = DHCP4_TAG_ARCH;
OptList[Index]->Length = (UINT8) sizeof (PXEBC_DHCP4_OPTION_ARCH);
OptEnt.Arch = (PXEBC_DHCP4_OPTION_ARCH *) OptList[Index]->Data;
Value = HTONS (EFI_PXE_CLIENT_SYSTEM_ARCHITECTURE);
@@ -357,7 +358,7 @@ PxeBcBuildDhcp4Options (
//
// Append vendor class identify option
//
- OptList[Index]->OpCode = PXEBC_DHCP4_TAG_CLASS_ID;
+ OptList[Index]->OpCode = DHCP4_TAG_VENDOR_CLASS_ID;
OptList[Index]->Length = (UINT8) sizeof (PXEBC_DHCP4_OPTION_CLID);
OptEnt.Clid = (PXEBC_DHCP4_OPTION_CLID *) OptList[Index]->Data;
CopyMem (
@@ -414,7 +415,7 @@ PxeBcSeedDhcp4Packet (
CopyMem (Header->ClientHwAddr, &Mode.CurrentAddress, Header->HwAddrLen);
Seed->Dhcp4.Magik = PXEBC_DHCP4_MAGIC;
- Seed->Dhcp4.Option[0] = PXEBC_DHCP4_TAG_EOP;
+ Seed->Dhcp4.Option[0] = DHCP4_TAG_EOP;
}
@@ -424,17 +425,24 @@ PxeBcSeedDhcp4Packet (
@param[in] Dst Pointer to the cache buffer for DHCPv4 packet.
@param[in] Src Pointer to the DHCPv4 packet to be cached.
+ @retval EFI_SUCCESS Packet is copied.
+ @retval EFI_BUFFER_TOO_SMALL Cache buffer is not big enough to hold the packet.
+
**/
-VOID
+EFI_STATUS
PxeBcCacheDhcp4Packet (
IN EFI_DHCP4_PACKET *Dst,
IN EFI_DHCP4_PACKET *Src
)
{
- ASSERT (Dst->Size >= Src->Length);
-
+ if (Dst->Size < Src->Length) {
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
CopyMem (&Dst->Dhcp4, &Src->Dhcp4, Src->Length);
Dst->Length = Src->Length;
+
+ return EFI_SUCCESS;
}
@@ -460,9 +468,11 @@ PxeBcParseDhcp4Packet (
BOOLEAN IsProxyOffer;
BOOLEAN IsPxeOffer;
UINT8 *Ptr8;
+ BOOLEAN FileFieldOverloaded;
IsProxyOffer = FALSE;
IsPxeOffer = FALSE;
+ FileFieldOverloaded = FALSE;
ZeroMem (Cache4->OptList, sizeof (Cache4->OptList));
ZeroMem (&Cache4->VendorOpt, sizeof (Cache4->VendorOpt));
@@ -472,6 +482,7 @@ PxeBcParseDhcp4Packet (
//
// Parse DHCPv4 options in this offer, and store the pointers.
+ // First, try to parse DHCPv4 options from the DHCP optional parameters field.
//
for (Index = 0; Index < PXEBC_DHCP4_TAG_INDEX_MAX; Index++) {
Options[Index] = PxeBcParseDhcp4Options (
@@ -480,9 +491,39 @@ PxeBcParseDhcp4Packet (
mInterestedDhcp4Tags[Index]
);
}
+ //
+ // Second, Check if bootfilename and serverhostname is overloaded to carry DHCP options refers to rfc-2132.
+ // If yes, try to parse options from the BootFileName field, then ServerName field.
+ //
+ Option = Options[PXEBC_DHCP4_TAG_INDEX_OVERLOAD];
+ if (Option != NULL) {
+ if ((Option->Data[0] & PXEBC_DHCP4_OVERLOAD_FILE) != 0) {
+ FileFieldOverloaded = TRUE;
+ for (Index = 0; Index < PXEBC_DHCP4_TAG_INDEX_MAX; Index++) {
+ if (Options[Index] == NULL) {
+ Options[Index] = PxeBcParseDhcp4Options (
+ (UINT8 *) Offer->Dhcp4.Header.BootFileName,
+ sizeof (Offer->Dhcp4.Header.BootFileName),
+ mInterestedDhcp4Tags[Index]
+ );
+ }
+ }
+ }
+ if ((Option->Data[0] & PXEBC_DHCP4_OVERLOAD_SERVER_NAME) != 0) {
+ for (Index = 0; Index < PXEBC_DHCP4_TAG_INDEX_MAX; Index++) {
+ if (Options[Index] == NULL) {
+ Options[Index] = PxeBcParseDhcp4Options (
+ (UINT8 *) Offer->Dhcp4.Header.ServerName,
+ sizeof (Offer->Dhcp4.Header.ServerName),
+ mInterestedDhcp4Tags[Index]
+ );
+ }
+ }
+ }
+ }
//
- // The offer with "yiaddr" is a proxy offer.
+ // The offer with zero "yiaddr" is a proxy offer.
//
if (Offer->Dhcp4.Header.YourAddr.Addr[0] == 0) {
IsProxyOffer = TRUE;
@@ -506,33 +547,24 @@ PxeBcParseDhcp4Packet (
}
//
- // Check whether bootfilename and serverhostname overloaded, refers to rfc-2132 in details.
- // If overloaded, parse the buffer as nested DHCPv4 options, or else just parse as bootfilename
- // and serverhostname option.
+ // Parse PXE boot file name:
+ // According to PXE spec, boot file name should be read from DHCP option 67 (bootfile name) if present.
+ // Otherwise, read from boot file field in DHCP header.
//
- Option = Options[PXEBC_DHCP4_TAG_INDEX_OVERLOAD];
- if (Option != NULL && (Option->Data[0] & PXEBC_DHCP4_OVERLOAD_FILE) != 0) {
-
- Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] = PxeBcParseDhcp4Options (
- (UINT8 *) Offer->Dhcp4.Header.BootFileName,
- sizeof (Offer->Dhcp4.Header.BootFileName),
- PXEBC_DHCP4_TAG_BOOTFILE
- );
+ if (Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] != NULL) {
//
// RFC 2132, Section 9.5 does not strictly state Bootfile name (option 67) is null
// terminated string. So force to append null terminated character at the end of string.
//
- if (Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] != NULL) {
- Ptr8 = (UINT8*)&Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Data[0];
- Ptr8 += Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Length;
- *Ptr8 = '\0';
+ Ptr8 = (UINT8*)&Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Data[0];
+ Ptr8 += Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Length;
+ if (*(Ptr8 - 1) != '\0') {
+ *Ptr8 = '\0';
}
-
- } else if ((Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] == NULL) &&
- (Offer->Dhcp4.Header.BootFileName[0] != 0)) {
+ } else if (!FileFieldOverloaded && Offer->Dhcp4.Header.BootFileName[0] != 0) {
//
// If the bootfile is not present and bootfilename is present in DHCPv4 packet, just parse it.
- // Do not count dhcp option header here, or else will destory the serverhostname.
+ // Do not count dhcp option header here, or else will destroy the serverhostname.
//
Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] = (EFI_DHCP4_PACKET_OPTION *)
(&Offer->Dhcp4.Header.BootFileName[0] -
@@ -596,8 +628,11 @@ PxeBcParseDhcp4Packet (
@param[in] Ack Pointer to the DHCPv4 ack packet.
@param[in] Verified If TRUE, parse the ACK packet and store info into mode data.
+ @retval EFI_SUCCESS Cache and parse the packet successfully.
+ @retval EFI_BUFFER_TOO_SMALL Cache buffer is not big enough to hold the packet.
+
**/
-VOID
+EFI_STATUS
PxeBcCopyDhcp4Ack (
IN PXEBC_PRIVATE_DATA *Private,
IN EFI_DHCP4_PACKET *Ack,
@@ -605,10 +640,14 @@ PxeBcCopyDhcp4Ack (
)
{
EFI_PXE_BASE_CODE_MODE *Mode;
+ EFI_STATUS Status;
Mode = Private->PxeBc.Mode;
- PxeBcCacheDhcp4Packet (&Private->DhcpAck.Dhcp4.Packet.Ack, Ack);
+ Status = PxeBcCacheDhcp4Packet (&Private->DhcpAck.Dhcp4.Packet.Ack, Ack);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
if (Verified) {
//
@@ -618,6 +657,8 @@ PxeBcCopyDhcp4Ack (
CopyMem (&Mode->DhcpAck.Dhcpv4, &Ack->Dhcp4, Ack->Length);
Mode->DhcpAckReceived = TRUE;
}
+
+ return EFI_SUCCESS;
}
@@ -627,8 +668,11 @@ PxeBcCopyDhcp4Ack (
@param[in] Private Pointer to PxeBc private data.
@param[in] OfferIndex The received order of offer packets.
+ @retval EFI_SUCCESS Cache and parse the packet successfully.
+ @retval EFI_BUFFER_TOO_SMALL Cache buffer is not big enough to hold the packet.
+
**/
-VOID
+EFI_STATUS
PxeBcCopyProxyOffer (
IN PXEBC_PRIVATE_DATA *Private,
IN UINT32 OfferIndex
@@ -636,6 +680,7 @@ PxeBcCopyProxyOffer (
{
EFI_PXE_BASE_CODE_MODE *Mode;
EFI_DHCP4_PACKET *Offer;
+ EFI_STATUS Status;
ASSERT (OfferIndex < Private->OfferNum);
ASSERT (OfferIndex < PXEBC_OFFER_MAX_NUM);
@@ -646,7 +691,11 @@ PxeBcCopyProxyOffer (
//
// Cache the proxy offer packet and parse it.
//
- PxeBcCacheDhcp4Packet (&Private->ProxyOffer.Dhcp4.Packet.Offer, Offer);
+ Status = PxeBcCacheDhcp4Packet (&Private->ProxyOffer.Dhcp4.Packet.Offer, Offer);
+ if (EFI_ERROR(Status)) {
+ return Status;
+ }
+
PxeBcParseDhcp4Packet (&Private->ProxyOffer.Dhcp4);
//
@@ -654,6 +703,8 @@ PxeBcCopyProxyOffer (
//
CopyMem (&Mode->ProxyOffer.Dhcpv4, &Offer->Dhcp4, Offer->Length);
Mode->ProxyOfferReceived = TRUE;
+
+ return EFI_SUCCESS;
}
@@ -756,8 +807,11 @@ PxeBcRetryBinlOffer (
@param[in] Private Pointer to PxeBc private data.
@param[in] RcvdOffer Pointer to the received offer packet.
+ @retval EFI_SUCCESS Cache and parse the packet successfully.
+ @retval Others Operation failed.
+
**/
-VOID
+EFI_STATUS
PxeBcCacheDhcp4Offer (
IN PXEBC_PRIVATE_DATA *Private,
IN EFI_DHCP4_PACKET *RcvdOffer
@@ -766,6 +820,7 @@ PxeBcCacheDhcp4Offer (
PXEBC_DHCP4_PACKET_CACHE *Cache4;
EFI_DHCP4_PACKET *Offer;
PXEBC_OFFER_TYPE OfferType;
+ EFI_STATUS Status;
ASSERT (Private->OfferNum < PXEBC_OFFER_MAX_NUM);
Cache4 = &Private->OfferBuffer[Private->OfferNum].Dhcp4;
@@ -774,13 +829,16 @@ PxeBcCacheDhcp4Offer (
//
// Cache the content of DHCPv4 packet firstly.
//
- PxeBcCacheDhcp4Packet (Offer, RcvdOffer);
+ Status = PxeBcCacheDhcp4Packet (Offer, RcvdOffer);
+ if (EFI_ERROR(Status)) {
+ return Status;
+ }
//
// Validate the DHCPv4 packet, and parse the options and offer type.
//
if (EFI_ERROR (PxeBcParseDhcp4Packet (Cache4))) {
- return;
+ return EFI_ABORTED;
}
//
@@ -797,7 +855,7 @@ PxeBcCacheDhcp4Offer (
Private->OfferIndex[OfferType][0] = Private->OfferNum;
Private->OfferCount[OfferType] = 1;
} else {
- return;
+ return EFI_ABORTED;
}
} else {
ASSERT (Private->OfferCount[OfferType] < PXEBC_OFFER_MAX_NUM);
@@ -813,14 +871,15 @@ PxeBcCacheDhcp4Offer (
//
Private->OfferIndex[OfferType][Private->OfferCount[OfferType]] = Private->OfferNum;
Private->OfferCount[OfferType]++;
- } else if (Private->OfferCount[OfferType] > 0) {
+ } else if ((OfferType == PxeOfferTypeProxyPxe10 || OfferType == PxeOfferTypeProxyWfm11a) &&
+ Private->OfferCount[OfferType] < 1) {
//
// Only cache the first PXE10/WFM11a offer, and discard the others.
//
Private->OfferIndex[OfferType][0] = Private->OfferNum;
Private->OfferCount[OfferType] = 1;
} else {
- return ;
+ return EFI_ABORTED;
}
} else {
//
@@ -832,6 +891,8 @@ PxeBcCacheDhcp4Offer (
}
Private->OfferNum++;
+
+ return EFI_SUCCESS;
}
@@ -956,11 +1017,12 @@ PxeBcSelectDhcp4Offer (
/**
Handle the DHCPv4 offer packet.
- @param[in] Private Pointer to PxeBc private data.
+ @param[in] Private Pointer to PxeBc private data.
- @retval EFI_SUCCESS Handled the DHCPv4 offer packet successfully.
- @retval EFI_NO_RESPONSE No response to the following request packet.
- @retval EFI_NOT_FOUND No boot filename received.
+ @retval EFI_SUCCESS Handled the DHCPv4 offer packet successfully.
+ @retval EFI_NO_RESPONSE No response to the following request packet.
+ @retval EFI_NOT_FOUND No boot filename received.
+ @retval EFI_BUFFER_TOO_SMALL Can't cache the offer pacet.
**/
EFI_STATUS
@@ -1065,7 +1127,7 @@ PxeBcHandleDhcp4Offer (
//
// Success to try to request by a ProxyPxe10 or ProxyWfm11a offer, copy and parse it.
//
- PxeBcCopyProxyOffer (Private, ProxyIndex);
+ Status = PxeBcCopyProxyOffer (Private, ProxyIndex);
}
} else {
//
@@ -1092,7 +1154,10 @@ PxeBcHandleDhcp4Offer (
Ack = Offer;
}
- PxeBcCopyDhcp4Ack (Private, Ack, TRUE);
+ Status = PxeBcCopyDhcp4Ack (Private, Ack, TRUE);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
Mode->DhcpDiscoverValid = TRUE;
}
@@ -1146,6 +1211,8 @@ PxeBcDhcp4CallBack (
return EFI_SUCCESS;
}
+ ASSERT (Packet != NULL);
+
Private = (PXEBC_PRIVATE_DATA *) Context;
Mode = Private->PxeBc.Mode;
Callback = Private->PxeBcCallback;
@@ -1156,10 +1223,10 @@ PxeBcDhcp4CallBack (
MaxMsgSize = PxeBcParseDhcp4Options (
Packet->Dhcp4.Option,
GET_OPTION_BUFFER_LEN (Packet),
- PXEBC_DHCP4_TAG_MAXMSG
+ DHCP4_TAG_MAXMSG
);
if (MaxMsgSize != NULL) {
- Value = HTONS (PXEBC_DHCP4_PACKET_MAX_SIZE - 8);
+ Value = HTONS (PXEBC_DHCP4_PACKET_MAX_SIZE);
CopyMem (MaxMsgSize->Data, &Value, sizeof (Value));
}
@@ -1185,6 +1252,14 @@ PxeBcDhcp4CallBack (
switch (Dhcp4Event) {
case Dhcp4SendDiscover:
+ if (Packet->Length > PXEBC_DHCP4_PACKET_MAX_SIZE) {
+ //
+ // If the to be sent packet exceeds the maximum length, abort the DHCP process.
+ //
+ Status = EFI_ABORTED;
+ break;
+ }
+
//
// Cache the DHCPv4 discover packet to mode data directly.
// It need to check SendGuid as well as Dhcp4SendRequest.
@@ -1192,6 +1267,14 @@ PxeBcDhcp4CallBack (
CopyMem (&Mode->DhcpDiscover.Dhcpv4, &Packet->Dhcp4, Packet->Length);
case Dhcp4SendRequest:
+ if (Packet->Length > PXEBC_DHCP4_PACKET_MAX_SIZE) {
+ //
+ // If the to be sent packet exceeds the maximum length, abort the DHCP process.
+ //
+ Status = EFI_ABORTED;
+ break;
+ }
+
if (Mode->SendGUID) {
//
// Send the system Guid instead of the MAC address as the hardware address if required.
@@ -1200,6 +1283,7 @@ PxeBcDhcp4CallBack (
//
// Zero the Guid to indicate NOT programable if failed to get system Guid.
//
+ DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios table!\n"));
ZeroMem (Packet->Dhcp4.Header.ClientHwAddr, sizeof (EFI_GUID));
}
Packet->Dhcp4.Header.HwAddrLen = (UINT8) sizeof (EFI_GUID);
@@ -1208,16 +1292,25 @@ PxeBcDhcp4CallBack (
case Dhcp4RcvdOffer:
Status = EFI_NOT_READY;
+ if (Packet->Length > PXEBC_DHCP4_PACKET_MAX_SIZE) {
+ //
+ // Ignore the incoming packets which exceed the maximum length.
+ //
+ break;
+ }
if (Private->OfferNum < PXEBC_OFFER_MAX_NUM) {
//
// Cache the DHCPv4 offers to OfferBuffer[] for select later, and record
// the OfferIndex and OfferCount.
+ // If error happens, just ignore this packet and continue to wait more offer.
//
PxeBcCacheDhcp4Offer (Private, Packet);
}
break;
case Dhcp4SelectOffer:
+ ASSERT (NewPacket != NULL);
+
//
// Select offer by the default policy or by order, and record the SelectIndex
// and SelectProxyType.
@@ -1238,7 +1331,10 @@ PxeBcDhcp4CallBack (
//
ASSERT (Private->SelectIndex != 0);
- PxeBcCopyDhcp4Ack (Private, Packet, FALSE);
+ Status = PxeBcCopyDhcp4Ack (Private, Packet, FALSE);
+ if (EFI_ERROR (Status)) {
+ Status = EFI_ABORTED;
+ }
break;
default:
@@ -1332,14 +1428,14 @@ PxeBcDhcp4Discover (
return EFI_OUT_OF_RESOURCES;
}
- OptList[OptCount]->OpCode = PXEBC_DHCP4_TAG_VENDOR;
+ OptList[OptCount]->OpCode = DHCP4_TAG_VENDOR;
OptList[OptCount]->Length = (UINT8) (VendorOptLen - 2);
PxeOpt = (EFI_DHCP4_PACKET_OPTION *) OptList[OptCount]->Data;
PxeOpt->OpCode = PXEBC_VENDOR_TAG_BOOT_ITEM;
PxeOpt->Length = (UINT8) sizeof (PXEBC_OPTION_BOOT_ITEM);
PxeBootItem = (PXEBC_OPTION_BOOT_ITEM *) PxeOpt->Data;
PxeBootItem->Type = HTONS (Type);
- PxeOpt->Data[PxeOpt->Length] = PXEBC_DHCP4_TAG_EOP;
+ PxeOpt->Data[PxeOpt->Length] = DHCP4_TAG_EOP;
if (Layer != NULL) {
PxeBootItem->Layer = HTONS (*Layer);
@@ -1376,6 +1472,7 @@ PxeBcDhcp4Discover (
//
// Zero the Guid to indicate NOT programable if failed to get system Guid.
//
+ DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios table!\n"));
ZeroMem (Token.Packet->Dhcp4.Header.ClientHwAddr, sizeof (EFI_GUID));
}
Token.Packet->Dhcp4.Header.HwAddrLen = (UINT8) sizeof (EFI_GUID);
@@ -1437,13 +1534,19 @@ PxeBcDhcp4Discover (
// Find the right PXE Reply according to server address.
//
while (RepIndex < Token.ResponseCount) {
+ if (Response->Length > PXEBC_DHCP4_PACKET_MAX_SIZE) {
+ SrvIndex = 0;
+ RepIndex++;
+ Response = (EFI_DHCP4_PACKET *) ((UINT8 *) Response + Response->Size);
+ continue;
+ }
while (SrvIndex < IpCount) {
if (SrvList[SrvIndex].AcceptAnyResponse) {
break;
}
if ((SrvList[SrvIndex].Type == Type) &&
- EFI_IP4_EQUAL (&Response->Dhcp4.Header.ServerAddr, &Private->ServerIp)) {
+ EFI_IP4_EQUAL (&Response->Dhcp4.Header.ServerAddr, &SrvList[SrvIndex].IpAddr)) {
break;
}
SrvIndex++;
@@ -1455,7 +1558,6 @@ PxeBcDhcp4Discover (
SrvIndex = 0;
RepIndex++;
-
Response = (EFI_DHCP4_PACKET *) ((UINT8 *) Response + Response->Size);
}
@@ -1465,10 +1567,16 @@ PxeBcDhcp4Discover (
// Especially for PXE discover packet, store it into mode data here.
//
if (Private->IsDoDiscover) {
- PxeBcCacheDhcp4Packet (&Private->PxeReply.Dhcp4.Packet.Ack, Response);
+ Status = PxeBcCacheDhcp4Packet (&Private->PxeReply.Dhcp4.Packet.Ack, Response);
+ if (EFI_ERROR(Status)) {
+ goto ON_EXIT;
+ }
CopyMem (&Mode->PxeDiscover, &Token.Packet->Dhcp4, Token.Packet->Length);
} else {
- PxeBcCacheDhcp4Packet (&Private->ProxyOffer.Dhcp4.Packet.Offer, Response);
+ Status = PxeBcCacheDhcp4Packet (&Private->ProxyOffer.Dhcp4.Packet.Offer, Response);
+ if (EFI_ERROR(Status)) {
+ goto ON_EXIT;
+ }
}
} else {
//
@@ -1476,15 +1584,64 @@ PxeBcDhcp4Discover (
//
Status = EFI_NOT_FOUND;
}
- if (Token.ResponseList != NULL) {
- FreePool (Token.ResponseList);
- }
}
-
- FreePool (Token.Packet);
+ON_EXIT:
+
+ if (Token.ResponseList != NULL) {
+ FreePool (Token.ResponseList);
+ }
+ if (Token.Packet != NULL) {
+ FreePool (Token.Packet);
+ }
return Status;
}
+/**
+ Switch the Ip4 policy to static.
+
+ @param[in] Private The pointer to PXEBC_PRIVATE_DATA.
+
+ @retval EFI_SUCCESS The policy is already configured to static.
+ @retval Others Other error as indicated..
+
+**/
+EFI_STATUS
+PxeBcSetIp4Policy (
+ IN PXEBC_PRIVATE_DATA *Private
+ )
+{
+ EFI_STATUS Status;
+ EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;
+ EFI_IP4_CONFIG2_POLICY Policy;
+ UINTN DataSize;
+
+ Ip4Config2 = Private->Ip4Config2;
+ DataSize = sizeof (EFI_IP4_CONFIG2_POLICY);
+ Status = Ip4Config2->GetData (
+ Ip4Config2,
+ Ip4Config2DataTypePolicy,
+ &DataSize,
+ &Policy
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (Policy != Ip4Config2PolicyStatic) {
+ Policy = Ip4Config2PolicyStatic;
+ Status= Ip4Config2->SetData (
+ Ip4Config2,
+ Ip4Config2DataTypePolicy,
+ sizeof (EFI_IP4_CONFIG2_POLICY),
+ &Policy
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
/**
Start the D.O.R.A DHCPv4 process to acquire the IPv4 address and other PXE boot information.
@@ -1547,14 +1704,16 @@ PxeBcDhcp4Dora (
ZeroMem (Private->OfferCount, sizeof (Private->OfferCount));
ZeroMem (Private->OfferIndex, sizeof (Private->OfferIndex));
- //
- // Start DHCPv4 D.O.R.A. process to acquire IPv4 address.
- //
Status = Dhcp4->Start (Dhcp4, NULL);
if (EFI_ERROR (Status)) {
if (Status == EFI_ICMP_ERROR) {
PxeMode->IcmpErrorReceived = TRUE;
}
+
+ if (Status == EFI_TIMEOUT && Private->OfferNum > 0) {
+ Status = EFI_NO_RESPONSE;
+ }
+
goto ON_EXIT;
}
@@ -1574,7 +1733,7 @@ PxeBcDhcp4Dora (
CopyMem (&PxeMode->StationIp, &Private->StationIp, sizeof (EFI_IPv4_ADDRESS));
CopyMem (&PxeMode->SubnetMask, &Private->SubnetMask, sizeof (EFI_IPv4_ADDRESS));
- Status = PxeBcFlushStaionIp (Private, &Private->StationIp, &Private->SubnetMask);
+ Status = PxeBcFlushStationIp (Private, &Private->StationIp, &Private->SubnetMask);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
@@ -1587,6 +1746,7 @@ PxeBcDhcp4Dora (
AsciiPrint ("\n Station IP address is ");
PxeBcShowIp4Addr (&Private->StationIp.v4);
+ AsciiPrint ("\n");
ON_EXIT:
if (EFI_ERROR (Status)) {