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Choco OS
V.0.16.9.0
Join to the chocolate world
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Choco OS
V.0.16.9.0
Join to the chocolate world
|
stores IPv6 address More...
#include <oc_net.h>
Data Fields | |
| uint64_t | LowPart |
| Low 8 bytes of the IPv6 address. | |
| uint64_t | HighPart |
| High 8 bytes of the IPv6 address. | |
| uint32_t | Version:4 |
| 4 bits, that contain the version, that specified if it's an IPv4 or IPv6 packet More... | |
| uint32_t | IHL:4 |
| 4 bits, that contain Internet Header Length, which is the length of the header in multiples of 4 (number of words - NOT BYTES!!!) | |
| uint32_t | QoS:8 |
Quality of Service or Type of Service - describes the priority of the packet | |
| uint32_t | Length:16 |
| Length of the packet in bytes. | |
| uint32_t | ID:16 |
| ID value for reconstruction the packet from segments. | |
| uint32_t | FragmentOffset:13 |
| Field to identify position of fragment within original packet. | |
| uint32_t | MF:1 |
More Fragments - whether more fragments of a packet follow | |
| uint32_t | DF:1 |
Don't Fragment - packet can be fragmented or not | |
| uint32_t | Reserved:1 |
| This is always 0. | |
| uint32_t | TTL:8 |
Time to live - number of hops the packet is allowed to pass before it dies. More... | |
| uint32_t | Protocol:8 |
| Contains selected protocol (TCP/UDP/ICMP,etc). More... | |
| uint32_t | Checksum:16 |
| Header checksum - number used for errors detection. | |
| oC_Net_Ipv4_t | SourceIp |
| Source IP address. | |
| oC_Net_Ipv4_t | DestinationIp |
| Destination IP address. | |
| uint32_t | TrafficClass:8 |
| The bits of this field hold two values. More... | |
| uint32_t | FlowLabel:20 |
| Originally created for tracking, now it's only a hint for routers and switches. More... | |
| uint32_t | PayloadLength:16 |
| Size of the payload in octets (bytes) | |
| uint32_t | NextHeader:8 |
| Specifies the type of the next header in the packet (TCP/UDP,etc) | |
| uint32_t | HopLimit:8 |
| The same as TTL from the IPv4 header - time of packet's live. More... | |
| oC_Net_Ipv6_t | Source |
| Source IP address. | |
| oC_Net_Ipv6_t | Destination |
| Destination IP address. | |
| oC_Net_Ipv4PacketHeader_t | Header |
| Header of the IPv4 packet. | |
| uint8_t | Data [IPv4_MAXIMUM_DATA_LENGTH] |
| Data of the packet. More... | |
| oC_Net_Ipv6PacketHeader_t | Header |
| Header of the IPv6 packet. | |
| uint32_t | Operation:8 |
| Specifies type of the message. More... | |
| uint32_t | HardwareType:8 |
| Hardware Type - specifies type of the hardware used in the local network. More... | |
| uint32_t | HardwareAddressLength:8 |
| Length of the hardware address in bytes. | |
| uint32_t | Hops:8 |
| Set to 0 by a client when transmitting a request and used by relay agents to control the forwarding of BOOT and/or DHCP messages. | |
| uint32_t | XID |
Transaction ID Generated by the client to allow it to match up the request with replies received from DHCP servers | |
| uint32_t | Secs:16 |
Seconds - In BOOTP this field was vaguely defined and not always used. More... | |
| uint32_t | Flags:16 |
| Flags of the message, look at oC_Dhcp_Flags_t type for more. | |
| uint32_t | CIAddr |
Client IP Address - If a client has IP address and it is valid (while BOUND, RENEWING or REBINDING states) it has to fill this field by it, otherwise it should be set to 0. More... | |
| uint32_t | YIAddr |
Your IP Address - the server fills it as the proposed IP address for the client | |
| uint32_t | SIAddr |
Server IP Address - the server fills it with its own address, that should be used for the states after DISCOVER | |
| uint32_t | GIAddr |
Gateway IP Address - a router IP | |
| uint8_t | CHAddr [16] |
Client Hardware Address - the hardware address of the client used for identification and communication | |
| char | SName [64] |
Server Name - The server can optionally put its name in this field | |
| char | File [128] |
Boot Filename - Optionally used by the client to request a particular type of boot file in a DISCOVER message | |
| uint32_t | MagicCookie |
Magic cookie - set to oC_DHCP_MAGIC_COOKIE (0x63825363) to identify the information as vendor independent option fields | |
| uint8_t | Options [oC_DHCP_OPTIONS_BUFFER_SIZE] |
| Additional options array. | |
| uint16_t | SourcePort |
| This field identifies the sender's port when meaningful and should be assumed to be the port to reply to if needed. More... | |
| uint16_t | DestinationPort |
| This field identifies the receiver's port and is required. More... | |
| uint16_t | Length |
| A field that specifies the length in bytes of the UDP header and UDP data. More... | |
| uint16_t | Checksum |
| The checksum field may be used for error-checking of the header and data. More... | |
| oC_Udp_Header_t | Header |
| Header of the UDP packet. | |
| uint16_t | HTYPE |
| Hardware type. | |
| uint16_t | PTYPE |
| Protocol type. | |
| uint8_t | HLEN |
| Hardware address length. | |
| uint8_t | PLEN |
| Protocol address length. | |
| uint16_t | OPER |
| Operation (1 is request, 2 is reply) | |
| uint8_t | AddressArray [4] |
| Array with addresses. | |
stores UDP datagram
pseudo UDP header required only for checksum calculation
stores UDP header
stores DHCP message
stores IPv6 packet
stores IPv4 packet
contains IPv6 packet header
contains IPv4 packet header
The type is for storing IP address in ver. 6
The type stores IPv4 packet header.
The type is for storing IPv6 packet header
The type is for storing packets in IPv4 format
The type is for storing packets in IPv6 format
The type is for storing DHCP message format.
| uint16_t Checksum |
| uint16_t DestinationPort |
| uint32_t HardwareType |
You can assign values from the oC_Dhcp_HardwareType_t type.
| uint16_t Length |
The minimum length is 8 bytes because that is the length of the header. The field size sets a theoretical limit of 65,535 bytes (8 byte header + 65,527 bytes of data) for a UDP datagram. The practical limit for the data length which is imposed by the underlying IPv4 protocol is 65,507 bytes
| uint32_t Operation |
A value 1 indicates a request message, while a value 2 is a reply message. You can use oC_Dhcp_OperationCode_t type to assign this value
| uint32_t Protocol |
You can use oC_Net_Protocol_t type to assign a value to this field
| uint32_t Secs |
| uint16_t SourcePort |
| uint32_t TrafficClass |
The 6 most-significant bits are used for differentiated services, which is used to classify packets.[2][3] The remaining two bits are used for ECN;[4] priority values subdivide into ranges: traffic where the source provides congestion control and non-congestion control traffic.
1.8.11 
