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313 lines
10 KiB
C
313 lines
10 KiB
C
/** @file
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Common definition and functions for IP6 driver.
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Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __EFI_IP6_COMMON_H__
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#define __EFI_IP6_COMMON_H__
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#define IP6_LINK_EQUAL(Mac1, Mac2) (CompareMem ((Mac1), (Mac2), sizeof (EFI_MAC_ADDRESS)) == 0)
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//
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// Convert the Microsecond to second. IP transmit/receive time is
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// in the unit of microsecond. IP ticks once per second.
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//
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#define IP6_US_TO_SEC(Us) (((Us) + 999999) / 1000000)
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#define IP6_ETHER_PROTO 0x86DD
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#define IP6_MAC_LEN 6
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#define IP6_IF_ID_LEN 8
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#define IP6_INTERFACE_LOCAL_SCOPE 1
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#define IP6_LINK_LOCAL_SCOPE 2
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#define IP6_SITE_LOCAL_SCOPE 5
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#define IP6_INFINIT_LIFETIME 0xFFFFFFFF
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#define IP6_HOP_LIMIT 255
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//
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// Make it to 64 since all 54 bits are zero.
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//
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#define IP6_LINK_LOCAL_PREFIX_LENGTH 64
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#define IP6_TIMER_INTERVAL_IN_MS 100
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#define IP6_ONE_SECOND_IN_MS 1000
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//
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// The packet is received as link level broadcast/multicast/promiscuous.
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//
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#define IP6_LINK_BROADCAST 0x00000001
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#define IP6_LINK_MULTICAST 0x00000002
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#define IP6_LINK_PROMISC 0x00000004
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#define IP6_U_BIT 0x02
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typedef enum {
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Ip6Promiscuous = 1,
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Ip6Unicast,
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Ip6Multicast,
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Ip6AnyCast
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} IP6_ADDRESS_TYPE;
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typedef struct {
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EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
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EFI_IPv6_ADDRESS *Address;
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} IP6_DESTROY_CHILD_BY_ADDR_CALLBACK_CONTEXT;
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typedef struct _IP6_INTERFACE IP6_INTERFACE;
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typedef struct _IP6_PROTOCOL IP6_PROTOCOL;
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typedef struct _IP6_SERVICE IP6_SERVICE;
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typedef struct _IP6_ADDRESS_INFO IP6_ADDRESS_INFO;
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/**
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Build a array of EFI_IP6_ADDRESS_INFO to be returned to the caller. The number
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of EFI_IP6_ADDRESS_INFO is also returned. If AddressList is NULL,
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only the address count is returned.
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@param[in] IpSb The IP6 service binding instance.
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@param[out] AddressCount The number of returned addresses.
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@param[out] AddressList The pointer to the array of EFI_IP6_ADDRESS_INFO.
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This is an optional parameter.
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@retval EFI_SUCCESS The address array is successfully build
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@retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the address info.
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@retval EFI_INVALID_PARAMETER Any input parameter is invalid.
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**/
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EFI_STATUS
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Ip6BuildEfiAddressList (
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IN IP6_SERVICE *IpSb,
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OUT UINT32 *AddressCount,
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OUT EFI_IP6_ADDRESS_INFO **AddressList OPTIONAL
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);
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/**
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Generate the multicast addresses identify the group of all IPv6 nodes or IPv6
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routers defined in RFC4291.
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All Nodes Addresses: FF01::1, FF02::1.
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All Router Addresses: FF01::2, FF02::2, FF05::2.
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@param[in] Router If TRUE, generate all routers addresses,
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else generate all node addresses.
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@param[in] Scope interface-local(1), link-local(2), or site-local(5)
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@param[out] Ip6Addr The generated multicast address.
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@retval EFI_INVALID_PARAMETER Any input parameter is invalid.
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@retval EFI_SUCCESS The address is generated.
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**/
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EFI_STATUS
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Ip6SetToAllNodeMulticast (
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IN BOOLEAN Router,
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IN UINT8 Scope,
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OUT EFI_IPv6_ADDRESS *Ip6Addr
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);
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/**
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This function converts MAC address to 64 bits interface ID according to RFC4291
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and returns the interface ID. Currently only 48-bit MAC address is supported by
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this function.
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@param[in, out] IpSb The IP6 service binding instance.
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@retval NULL The operation fails.
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@return Pointer to the generated interface ID.
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**/
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UINT8 *
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Ip6CreateInterfaceID (
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IN OUT IP6_SERVICE *IpSb
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);
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/**
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This function creates link-local address from interface identifier. The
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interface identifier is normally created from MAC address. It might be manually
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configured by administrator if the link-local address created from MAC address
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is a duplicate address.
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@param[in, out] IpSb The IP6 service binding instance.
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@retval NULL If the operation fails.
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@return The generated Link Local address, in network order.
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**/
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EFI_IPv6_ADDRESS *
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Ip6CreateLinkLocalAddr (
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IN OUT IP6_SERVICE *IpSb
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);
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/**
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Compute the solicited-node multicast address for an unicast or anycast address,
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by taking the low-order 24 bits of this address, and appending those bits to
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the prefix FF02:0:0:0:0:1:FF00::/104.
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@param Ip6Addr The unicast or anycast address, in network order.
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@param MulticastAddr The generated solicited-node multicast address,
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in network order.
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**/
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VOID
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Ip6CreateSNMulticastAddr (
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IN EFI_IPv6_ADDRESS *Ip6Addr,
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OUT EFI_IPv6_ADDRESS *MulticastAddr
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);
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/**
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Check whether the incoming Ipv6 address is a solicited-node multicast address.
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@param[in] Ip6 Ip6 address, in network order.
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@retval TRUE Yes, solicited-node multicast address
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@retval FALSE No
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**/
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BOOLEAN
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Ip6IsSNMulticastAddr (
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IN EFI_IPv6_ADDRESS *Ip6
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);
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/**
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Check whether the incoming IPv6 address is one of the maintained address in
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the IP6 service binding instance.
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@param[in] IpSb Points to a IP6 service binding instance
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@param[in] Address The IP6 address to be checked.
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@param[out] Interface If not NULL, output the IP6 interface which
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maintains the Address.
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@param[out] AddressInfo If not NULL, output the IP6 address information
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of the Address.
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@retval TRUE Yes, it is one of the maintained addresses.
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@retval FALSE No, it is not one of the maintained addresses.
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**/
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BOOLEAN
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Ip6IsOneOfSetAddress (
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IN IP6_SERVICE *IpSb,
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IN EFI_IPv6_ADDRESS *Address,
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OUT IP6_INTERFACE **Interface OPTIONAL,
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OUT IP6_ADDRESS_INFO **AddressInfo OPTIONAL
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);
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/**
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Check whether the incoming MAC address is valid.
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@param[in] IpSb Points to a IP6 service binding instance.
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@param[in] LinkAddress The MAC address.
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@retval TRUE Yes, it is valid.
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@retval FALSE No, it is not valid.
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**/
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BOOLEAN
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Ip6IsValidLinkAddress (
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IN IP6_SERVICE *IpSb,
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IN EFI_MAC_ADDRESS *LinkAddress
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);
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/**
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Copy the PrefixLength bits from Src to Dest.
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@param[out] Dest A pointer to the buffer to copy to.
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@param[in] Src A pointer to the buffer to copy from.
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@param[in] PrefixLength The number of bits to copy.
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**/
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VOID
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Ip6CopyAddressByPrefix (
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OUT EFI_IPv6_ADDRESS *Dest,
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IN EFI_IPv6_ADDRESS *Src,
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IN UINT8 PrefixLength
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);
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/**
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Insert a node IP6_ADDRESS_INFO to an IP6 interface.
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@param[in, out] IpIf Points to an IP6 interface.
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@param[in] AddrInfo Points to an IP6_ADDRESS_INFO.
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**/
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VOID
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Ip6AddAddr (
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IN OUT IP6_INTERFACE *IpIf,
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IN IP6_ADDRESS_INFO *AddrInfo
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);
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/**
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Remove the IPv6 address from the address list node points to IP6_ADDRESS_INFO.
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This function removes the matching IPv6 addresses from the address list and
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adjusts the address count of the address list. If IpSb is not NULL, this function
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calls Ip6LeaveGroup to see whether it should call Mnp->Groups() to remove the
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its solicited-node multicast MAC address from the filter list and sends out
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a Multicast Listener Done. If Prefix is NULL, all address in the address list
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will be removed. If Prefix is not NULL, the address that matching the Prefix
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with PrefixLength in the address list will be removed.
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@param[in] IpSb NULL or points to IP6 service binding instance.
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@param[in, out] AddressList address list array
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@param[in, out] AddressCount the count of addresses in address list array
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@param[in] Prefix NULL or an IPv6 address prefix
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@param[in] PrefixLength the length of Prefix
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@retval EFI_SUCCESS The operation completed successfully.
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@retval EFI_NOT_FOUND The address matching the Prefix with PrefixLength
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cannot be found in address list.
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@retval EFI_INVALID_PARAMETER Any input parameter is invalid.
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**/
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EFI_STATUS
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Ip6RemoveAddr (
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IN IP6_SERVICE *IpSb OPTIONAL,
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IN OUT LIST_ENTRY *AddressList,
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IN OUT UINT32 *AddressCount,
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IN EFI_IPv6_ADDRESS *Prefix OPTIONAL,
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IN UINT8 PrefixLength
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);
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/**
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Get the MAC address for a multicast IP address. Call
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Mnp's McastIpToMac to find the MAC address instead of
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hard-coding the NIC to be Ethernet.
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@param[in] Mnp The Mnp instance to get the MAC address.
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@param[in] Multicast The multicast IP address to translate.
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@param[out] Mac The buffer to hold the translated address.
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@retval EFI_SUCCESS The multicast IP is successfully
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translated to a multicast MAC address.
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@retval Other The address is not converted because an error occurred.
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**/
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EFI_STATUS
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Ip6GetMulticastMac (
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IN EFI_MANAGED_NETWORK_PROTOCOL *Mnp,
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IN EFI_IPv6_ADDRESS *Multicast,
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OUT EFI_MAC_ADDRESS *Mac
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);
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/**
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Convert the multibyte field in IP header's byter order.
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In spite of its name, it can also be used to convert from
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host to network byte order.
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@param[in, out] Head The IP head to convert.
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@return Point to the converted IP head.
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**/
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EFI_IP6_HEADER *
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Ip6NtohHead (
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IN OUT EFI_IP6_HEADER *Head
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);
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#endif
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