Wiesner András
ab8d45932f
- Timestamping management added - Errors due to reading uninitialized data in ARP fixed - EthInterface reworked, incoming packet notification and payload readout separated (through which fixing concurrent access problems) - RX and TX offloads added - Capability to add a packet sieve layer without prior registration of specific packet class added (this makes it possible to register arbitrary EtherType connection blocks, for example)
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
#ifndef ETHERLIB_ETH_INTERFACE_H
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#define ETHERLIB_ETH_INTERFACE_H
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#include "packet_sieve.h"
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#include "prefab/packet_parsers/packet_parsers.h"
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#include "prefab/packet_parsers/ipv4_types.h"
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#include "arp_cache.h"
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#include "connection_block.h"
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#include "msg_queue.h"
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#include "prefab/conn_blocks/ipv4/ip_assembler.h"
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#include "etherlib_options.h"
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/**
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* Ethernet interface low level definition.
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*/
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typedef struct EthIODef_ {
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int (*llTxTrigger)(struct EthIODef_ * io, MsgQueue * mq); ///< Function pointer to low-level transmit function trigger
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int (*llTxDone)(struct EthIODef_ * io, const RawPckt * rawPckt); ///< Transmission done (interrupt) callback
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int (*llLinkChg)(struct EthIODef_ * io, int linkState); ///< Link change interrupt
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int (*llRxStore)(struct EthIODef_ * io, const RawPckt * rawPckt); ///< Receive done callback
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int (*llError)(struct EthIODef_ * io, int error); ///< Low-level error interrupt
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int (*llRxRead)(struct EthIODef_ * io, MsgQueue * mq); ///< Read received packets
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int (*llRxNotify)(struct EthIODef_ * io); ///< Notify of received packets
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void * tag; ///< Some arbitrary tagging
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} EthIODef;
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/**
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* Ethernet interface capabilities
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*/
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typedef enum {
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ETHINF_CAP_NONE = 0,
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ETHINF_CAP_TX_CRC_OFFLOAD = 1,
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ETHINF_CAP_TX_IPCHKSUM_OFFLOAD = 2,
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ETHINF_CAP_TX_TCPUDPCHKSUM_OFFLOAD = 4,
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ETHINF_CAP_RX_IPCHKSUM_OFFLOAD = 8,
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ETHINF_CAP_RX_TCPUDPCHKSUM_OFFLOAD = 16,
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ETHINF_CAP_ALL_RX_TX_CHECKSUM_OFFLOADS = 0b11111,
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} EthIntfCap;
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/**
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* Ethernet interface representation.
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*/
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typedef struct EthInterface_ {
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PcktSieve sieve; ///< Packet sieve
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EthIODef * ioDef; ///< Low-level IO definitions
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EthernetAddress mac; ///< Ethernet address
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uint32_t capabilities; ///< Ethernet interface capabilities
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ip4_addr ip; ///< IP address
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ip4_addr router; ///< Router IP address
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ip4_addr netmask; ///< Subnet mask
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ip4_addr dns; ///< Domain Name Server
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ArpCache * arpc; ///< ARP cache
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ConnBlock arpCb; ///< ARP connection block
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MsgQueue * txQ; ///< Transmit queue
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MsgQueue * rxQ; ///< Receive queue
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ETHLIB_OS_SEM_TYPE rxSem; ///< Receive queue semaphore
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IPv4Assembler * ipra; ///< IPv4 reassembler
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} EthInterface;
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/**
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* Allocate a new Ethernet interface
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* @param io Low-level IO definitions
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* @return new interface instance
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*/
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EthInterface *ethintf_new(EthIODef * io);
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/**
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* Receive uncooked packet.
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* @param rawPckt
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*/
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void ethinf_receive(EthInterface *intf, const RawPckt *rawPckt);
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/**
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* Notify interface of a received, buffered packet, which needs transferred
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* from the low level Ethernet-driver.
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* @param intf Pointer to Ethernet-interface
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*/
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void ethinf_notify(EthInterface *intf);
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/**
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* Transmit packet.
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*/
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void ethinf_transmit(EthInterface *intf, const RawPckt *rawPckt);
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/**
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* Set interface capabilities.
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* @param intf pointer to Ethernet interface
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* @param cap OR-ed bitfield of capabilities
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*/
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void ethinf_set_capabilities(EthInterface *intf, uint32_t cap);
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#endif //ETHERLIB_ETH_INTERFACE_H
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