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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7144 6f19259b-4bc3-4df7-8a09-765794883524

This commit is contained in:
ywu21 2008-12-29 01:28:11 +00:00
parent f381602727
commit b9008c87eb
1 changed files with 190 additions and 39 deletions
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229
MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
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@ -78,13 +78,15 @@ IP4_ADDR gIp4AllMasks[IP4_MASK_NUM] = {
EFI_IPv4_ADDRESS mZeroIp4Addr = {{0, 0, 0, 0}};
/**
Return the length of the mask. If the mask is invalid,
return the invalid length 33, which is IP4_MASK_NUM.
Return the length of the mask.
Return the length of the mask, the correct value is from 0 to 32.
If the mask is invalid, return the invalid length 33, which is IP4_MASK_NUM.
NetMask is in the host byte order.
@param[in] NetMask The netmask to get the length from.
@return The length of the netmask, IP4_MASK_NUM if the mask isn't.
@return The length of the netmask, IP4_MASK_NUM if the mask is invalid.
**/
INTN
@ -107,9 +109,21 @@ NetGetMaskLength (
/**
Return the class of the address, such as class a, b, c.
Return the class of the IP address, such as class A, B, C.
Addr is in host byte order.
The address of class A starts with 0.
If the address belong to class A, return IP4_ADDR_CLASSA.
The address of class B starts with 10.
If the address belong to class B, return IP4_ADDR_CLASSB.
The address of class C starts with 110.
If the address belong to class C, return IP4_ADDR_CLASSC.
The address of class D starts with 1110.
If the address belong to class D, return IP4_ADDR_CLASSD.
The address of class E starts with 1111.
If the address belong to class E, return IP4_ADDR_CLASSE.
@param[in] Addr The address to get the class from.
@return IP address class, such as IP4_ADDR_CLASSA.
@ -146,8 +160,12 @@ NetGetIpClass (
/**
Check whether the IP is a valid unicast address according to
the netmask. If NetMask is zero, use the IP address's class to
get the default mask.
the netmask. If NetMask is zero, use the IP address's class to get the default mask.
If Ip is 0, IP is not a valid unicast address.
Class D address is used for multicasting and class E address is reserved for future. If Ip
belongs to class D or class E, IP is not a valid unicast address.
If all bits of the host address of IP are 0 or 1, IP is also not a valid unicast address.
@param[in] Ip The IP to check against.
@param[in] NetMask The mask of the IP.
@ -184,7 +202,11 @@ Ip4IsUnicast (
/**
Initialize a random seed using current time.
Get current time first. Then initialize a random seed based on some basic
mathematics operation on the hour, day, minute, second, nanosecond and year
of the current time.
@return The random seed initialized with current time.
**/
@ -207,8 +229,10 @@ NetRandomInitSeed (
/**
Extract a UINT32 from a byte stream, then convert it to host
byte order. Use this function to avoid alignment error.
Extract a UINT32 from a byte stream.
Copy a UINT32 from a byte stream, then converts it from Network
byte order to host byte order. Use this function to avoid alignment error.
@param[in] Buf The buffer to extract the UINT32.
@ -229,8 +253,10 @@ NetGetUint32 (
/**
Put a UINT32 to the byte stream. Convert it from host byte order
to network byte order before putting.
Put a UINT32 to the byte stream in network byte order.
Converts a UINT32 from host byte order to network byte order. Then copy it to the
byte stream.
@param[in, out] Buf The buffer to put the UINT32.
@param[in] Data The data to put.
@ -249,11 +275,21 @@ NetPutUint32 (
/**
Remove the first entry on the list.
Remove the first node entry on the list, and return the removed node entry.
Removes the first node Entry from a doubly linked list. It is up to the caller of
this function to release the memory used by the first node if that is required. On
exit, the removed node is returned.
If Head is NULL, then ASSERT().
If Head was not initialized, then ASSERT().
If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
linked list including the head node is greater than or equal to PcdMaximumLinkedListLength,
then ASSERT().
@param[in, out] Head The list header.
@return The entry that is removed from the list, NULL if the list is empty.
@return The first node entry that is removed from the list, NULL if the list is empty.
**/
LIST_ENTRY *
@ -284,11 +320,21 @@ NetListRemoveHead (
/**
Remove the last entry on the list.
Remove the last node entry on the list and and return the removed node entry.
Removes the last node entry from a doubly linked list. It is up to the caller of
this function to release the memory used by the first node if that is required. On
exit, the removed node is returned.
If Head is NULL, then ASSERT().
If Head was not initialized, then ASSERT().
If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
linked list including the head node is greater than or equal to PcdMaximumLinkedListLength,
then ASSERT().
@param[in, out] Head The list head.
@return The entry that is removed from the list, NULL if the list is empty.
@return The last node entry that is removed from the list, NULL if the list is empty.
**/
LIST_ENTRY *
@ -319,8 +365,11 @@ NetListRemoveTail (
/**
Insert the NewEntry after the PrevEntry.
Insert a new node entry after a designated node entry of a doubly linked list.
Inserts a new node entry donated by NewEntry after the node entry donated by PrevEntry
of the doubly linked list.
@param[in, out] PrevEntry The previous entry to insert after.
@param[in, out] NewEntry The new entry to insert.
@ -340,8 +389,11 @@ NetListInsertAfter (
/**
Insert the NewEntry before the PostEntry.
Insert a new node entry before a designated node entry of a doubly linked list.
Inserts a new node entry donated by NewEntry after the node entry donated by PostEntry
of the doubly linked list.
@param[in, out] PostEntry The entry to insert before.
@param[in, out] NewEntry The new entry to insert.
@ -362,7 +414,15 @@ NetListInsertBefore (
/**
Initialize the netmap. Netmap is a reposity to keep the <Key, Value> pairs.
Initialize the forward and backward links of two head nodes donated by Map->Used
and Map->Recycled of two doubly linked lists.
Initializes the count of the <Key, Value> pairs in the netmap to zero.
If Map is NULL, then ASSERT().
If the address of Map->Used is NULl, then ASSERT().
If the address of Map->Recycled is NULl, then ASSERT().
@param[in, out] Map The netmap to initialize.
**/
@ -382,7 +442,13 @@ NetMapInit (
/**
To clean up the netmap, that is, release allocated memories.
Removes all nodes of the Used doubly linked list and free memory of all related netmap items.
Removes all nodes of the Recycled doubly linked list and free memory of all related netmap items.
The number of the <Key, Value> pairs in the netmap is set to be zero.
If Map is NULL, then ASSERT().
@param[in, out] Map The netmap to clean up.
**/
@ -421,8 +487,13 @@ NetMapClean (
/**
Test whether the netmap is empty.
Test whether the netmap is empty and return true if it is.
If the number of the <Key, Value> pairs in the netmap is zero, return TRUE.
If Map is NULL, then ASSERT().
@param[in] Map The net map to test.
@return TRUE if the netmap is empty, otherwise FALSE.
@ -458,9 +529,15 @@ NetMapGetCount (
/**
Allocate an item for the netmap. It will try to allocate.
a batch of items and return one.
Return one allocated item.
If the Recycled doubly linked list of the netmap is empty, it will try to allocate
a batch of items if there are enough resources and add corresponding nodes to the begining
of the Recycled doubly linked list of the netmap. Otherwise, it will directly remove
the fist node entry of the Recycled doubly linked list and return the corresponding item.
If Map is NULL, then ASSERT().
@param[in, out] Map The netmap to allocate item for.
@return The allocated item. If NULL, the
@ -505,7 +582,13 @@ NetMapAllocItem (
/**
Allocate an item to save the <Key, Value> pair to the head of the netmap.
Allocate an item to save the <Key, Value> pair and add corresponding node entry
to the beginning of the Used doubly linked list. The number of the <Key, Value>
pairs in the netmap increase by 1.
If Map is NULL, then ASSERT().
@param[in, out] Map The netmap to insert into.
@param[in] Key The user's key.
@param[in] Value The user's value for the key.
@ -544,6 +627,12 @@ NetMapInsertHead (
/**
Allocate an item to save the <Key, Value> pair to the tail of the netmap.
Allocate an item to save the <Key, Value> pair and add corresponding node entry
to the tail of the Used doubly linked list. The number of the <Key, Value>
pairs in the netmap increase by 1.
If Map is NULL, then ASSERT().
@param[in, out] Map The netmap to insert into.
@param[in] Key The user's key.
@param[in] Value The user's value for the key.
@ -581,7 +670,7 @@ NetMapInsertTail (
/**
Check whther the item is in the Map.
Check whether the item is in the Map and return TRUE if it is.
@param[in] Map The netmap to search within.
@param[in] Item The item to search.
@ -608,8 +697,13 @@ NetItemInMap (
/**
Find the key in the netmap.
Find the key in the netmap and returns the point to the item contains the Key.
Iterate the Used doubly linked list of the netmap to get every item. Compare the key of every
item with the key to search. It returns the point to the item contains the Key if found.
If Map is NULL, then ASSERT().
@param[in] Map The netmap to search within.
@param[in] Key The key to search.
@ -641,8 +735,17 @@ NetMapFindKey (
/**
Remove the item from the netmap.
Remove the node entry of the item from the netmap and return the key of the removed item.
Remove the node entry of the item from the Used doubly linked list of the netmap.
The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node
entry of the item to the Recycled doubly linked list of the netmap. If Value is not NULL,
Value will point to the value of the item. It returns the key of the removed item.
If Map is NULL, then ASSERT().
If Item is NULL, then ASSERT().
if item in not in the netmap, then ASSERT().
@param[in, out] Map The netmap to remove the item from.
@param[in, out] Item The item to remove.
@param[out] Value The variable to receive the value if not NULL.
@ -674,8 +777,16 @@ NetMapRemoveItem (
/**
Remove the first entry on the netmap.
Remove the first node entry on the netmap and return the key of the removed item.
Remove the first node entry from the Used doubly linked list of the netmap.
The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node
entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL,
parameter Value will point to the value of the item. It returns the key of the removed item.
If Map is NULL, then ASSERT().
If the Used doubly linked list is empty, then ASSERT().
@param[in, out] Map The netmap to remove the head from.
@param[out] Value The variable to receive the value if not NULL.
@ -711,8 +822,16 @@ NetMapRemoveHead (
/**
Remove the last entry on the netmap.
Remove the last node entry on the netmap and return the key of the removed item.
Remove the last node entry from the Used doubly linked list of the netmap.
The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node
entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL,
parameter Value will point to the value of the item. It returns the key of the removed item.
If Map is NULL, then ASSERT().
If the Used doubly linked list is empty, then ASSERT().
@param[in, out] Map The netmap to remove the tail from.
@param[out] Value The variable to receive the value if not NULL.
@ -748,11 +867,15 @@ NetMapRemoveTail (
/**
Iterate through the netmap and call CallBack for each item. It will
contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break
from the loop. It returns the CallBack's last return value. This
function is delete safe for the current item.
Iterate through the netmap and call CallBack for each item.
It will contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break
from the loop. It returns the CallBack's last return value. This function is
delete safe for the current item.
If Map is NULL, then ASSERT().
If CallBack is NULL, then ASSERT().
@param[in] Map The Map to iterate through.
@param[in] CallBack The callback function to call for each item.
@param[in] Arg The opaque parameter to the callback.
@ -774,8 +897,8 @@ NetMapIterate (
LIST_ENTRY *Entry;
LIST_ENTRY *Next;
LIST_ENTRY *Head;
NET_MAP_ITEM *Item;
EFI_STATUS Result;
NET_MAP_ITEM *Item;
EFI_STATUS Result;
ASSERT ((Map != NULL) && (CallBack != NULL));
@ -801,6 +924,9 @@ NetMapIterate (
/**
This is the default unload handle for all the network drivers.
Disconnect the driver specified by ImageHandle from all the devices in the handle database.
Uninstall all the protocols installed in the driver entry point.
@param[in] ImageHandle The drivers' driver image.
@retval EFI_SUCCESS The image is unloaded.
@ -914,7 +1040,12 @@ NetLibDefaultUnload (
/**
Create a child of the service that is identified by ServiceBindingGuid.
Get the ServiceBinding Protocol first, then use it to create a child.
If ServiceBindingGuid is NULL, then ASSERT().
If ChildHandle is NULL, then ASSERT().
@param[in] Controller The controller which has the service installed.
@param[in] Image The image handle used to open service.
@param[in] ServiceBindingGuid The service's Guid.
@ -965,7 +1096,11 @@ NetLibCreateServiceChild (
/**
Destory a child of the service that is identified by ServiceBindingGuid.
Get the ServiceBinding Protocol first, then use it to destroy a child.
If ServiceBindingGuid is NULL, then ASSERT().
@param[in] Controller The controller which has the service installed.
@param[in] Image The image handle used to open service.
@param[in] ServiceBindingGuid The service's Guid.
@ -1018,6 +1153,11 @@ NetLibDestroyServiceChild (
SnpHandle to a unicode string. Callers are responsible for freeing the
string storage.
Get the mac address of the Simple Network protocol from the SnpHandle. Then convert
the mac address into a unicode string. It takes 2 unicode characters to represent
a 1 byte binary buffer. Plus one unicode character for the null-terminator.
@param[in] SnpHandle The handle where the simple network protocol is
installed on.
@param[in] ImageHandle The image handle used to act as the agent handle to
@ -1091,6 +1231,11 @@ NetLibGetMacString (
Check the default address used by the IPv4 driver is static or dynamic (acquired
from DHCP).
If the controller handle does not have the NIC Ip4 Config Protocol installed, the
default address is static. If the EFI variable to save the configuration is not found,
the default address is static. Otherwise, get the result from the EFI variable which
saving the configuration.
@param[in] Controller The controller handle which has the NIC Ip4 Config Protocol
relative with the default address to judge.
@ -1146,6 +1291,11 @@ ON_EXIT:
/**
Create an IPv4 device path node.
The header type of IPv4 device path node is MESSAGING_DEVICE_PATH.
The header subtype of IPv4 device path node is MSG_IPv4_DP.
The length of the IPv4 device path node in bytes is 19.
Get other info from parameters to make up the whole IPv4 device path node.
@param[in, out] Node Pointer to the IPv4 device path node.
@param[in] Controller The handle where the NIC IP4 config protocol resides.
@ -1192,6 +1342,7 @@ NetLibCreateIPv4DPathNode (
/**
Find the UNDI/SNP handle from controller and protocol GUID.
For example, IP will open a MNP child to transmit/receive
packets, when MNP is stopped, IP should also be stopped. IP
needs to find its own private data which is related the IP's