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Diffstat (limited to 'include/net-legacy.h')
| -rw-r--r-- | include/net-legacy.h | 544 |
1 files changed, 544 insertions, 0 deletions
diff --git a/include/net-legacy.h b/include/net-legacy.h new file mode 100644 index 00000000000..ed286e3d326 --- /dev/null +++ b/include/net-legacy.h @@ -0,0 +1,544 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * LiMon Monitor (LiMon) - Network. + * + * Copyright 1994 - 2000 Neil Russell. + * (See License) + * + * History + * 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added + */ + +#ifndef __NET_LEGACY_H__ +#define __NET_LEGACY_H__ + +#include <linux/types.h> +#include <asm/byteorder.h> /* for nton* / ntoh* stuff */ +#include <log.h> +#include <time.h> +#include <linux/if_ether.h> + +struct bd_info; +struct cmd_tbl; +struct udevice; + +#define DEBUG_LL_STATE 0 /* Link local state machine changes */ +#define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */ +#define DEBUG_NET_PKT 0 /* Packets on info on the network at large */ +#define DEBUG_INT_STATE 0 /* Internal network state changes */ + +/* ARP hardware address length */ +#define ARP_HLEN 6 +/* + * The size of a MAC address in string form, each digit requires two chars + * and five separator characters to form '00:00:00:00:00:00'. + */ +#define ARP_HLEN_ASCII (ARP_HLEN * 2) + (ARP_HLEN - 1) + +/** + * An incoming packet handler. + * @param pkt pointer to the application packet + * @param dport destination UDP port + * @param sip source IP address + * @param sport source UDP port + * @param len packet length + */ +typedef void rxhand_f(uchar *pkt, unsigned dport, + struct in_addr sip, unsigned sport, + unsigned len); + +/** + * An incoming ICMP packet handler. + * @param type ICMP type + * @param code ICMP code + * @param dport destination UDP port + * @param sip source IP address + * @param sport source UDP port + * @param pkt pointer to the ICMP packet data + * @param len packet length + */ +typedef void rxhand_icmp_f(unsigned type, unsigned code, unsigned dport, + struct in_addr sip, unsigned sport, uchar *pkt, unsigned len); + +/* + * A timeout handler. Called after time interval has expired. + */ +typedef void thand_f(void); + +/* + * The devname can be either an exact name given by the driver or device tree + * or it can be an alias of the form "eth%d" + */ +struct udevice *eth_get_dev_by_name(const char *devname); +int eth_init_state_only(void); /* Set active state */ +void eth_halt_state_only(void); /* Set passive state */ + +/** + * eth_env_set_enetaddr_by_index() - set the MAC address environment variable + * + * This sets up an environment variable with the given MAC address (@enetaddr). + * The environment variable to be set is defined by <@base_name><@index>addr. + * If @index is 0 it is omitted. For common Ethernet this means ethaddr, + * eth1addr, etc. + * + * @base_name: Base name for variable, typically "eth" + * @index: Index of interface being updated (>=0) + * @enetaddr: Pointer to MAC address to put into the variable + * Return: 0 if OK, other value on error + */ +int eth_env_set_enetaddr_by_index(const char *base_name, int index, + uchar *enetaddr); + +/* + * Get the hardware address for an ethernet interface . + * Args: + * base_name - base name for device (normally "eth") + * index - device index number (0 for first) + * enetaddr - returns 6 byte hardware address + * Returns: + * Return true if the address is valid. + */ +int eth_env_get_enetaddr_by_index(const char *base_name, int index, + uchar *enetaddr); + +int eth_send(void *packet, int length); /* Send a packet */ + +#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER) +int eth_receive(void *packet, int length); /* Receive a packet*/ +extern void (*push_packet)(void *packet, int length); +#endif +int eth_mcast_join(struct in_addr mcast_addr, int join); + +/**********************************************************************/ +/* + * Protocol headers. + */ + +#define ETH_FCS_LEN 4 /* Octets in the FCS */ + +struct e802_hdr { + u8 et_dest[ARP_HLEN]; /* Destination node */ + u8 et_src[ARP_HLEN]; /* Source node */ + u16 et_protlen; /* Protocol or length */ + u8 et_dsap; /* 802 DSAP */ + u8 et_ssap; /* 802 SSAP */ + u8 et_ctl; /* 802 control */ + u8 et_snap1; /* SNAP */ + u8 et_snap2; + u8 et_snap3; + u16 et_prot; /* 802 protocol */ +} __attribute__((packed)); + +/* 802 + SNAP + ethernet header size */ +#define E802_HDR_SIZE (sizeof(struct e802_hdr)) + +/* + * Virtual LAN Ethernet header + */ +struct vlan_ethernet_hdr { + u8 vet_dest[ARP_HLEN]; /* Destination node */ + u8 vet_src[ARP_HLEN]; /* Source node */ + u16 vet_vlan_type; /* PROT_VLAN */ + u16 vet_tag; /* TAG of VLAN */ + u16 vet_type; /* protocol type */ +} __attribute__((packed)); + +/* VLAN Ethernet header size */ +#define VLAN_ETHER_HDR_SIZE (sizeof(struct vlan_ethernet_hdr)) + +/* + * Internet Protocol (IP) header. + */ +struct ip_hdr { + u8 ip_hl_v; /* header length and version */ + u8 ip_tos; /* type of service */ + u16 ip_len; /* total length */ + u16 ip_id; /* identification */ + u16 ip_off; /* fragment offset field */ + u8 ip_ttl; /* time to live */ + u8 ip_p; /* protocol */ + u16 ip_sum; /* checksum */ + struct in_addr ip_src; /* Source IP address */ + struct in_addr ip_dst; /* Destination IP address */ +} __attribute__((packed)); + +#define IP_OFFS 0x1fff /* ip offset *= 8 */ +#define IP_FLAGS 0xe000 /* first 3 bits */ +#define IP_FLAGS_RES 0x8000 /* reserved */ +#define IP_FLAGS_DFRAG 0x4000 /* don't fragments */ +#define IP_FLAGS_MFRAG 0x2000 /* more fragments */ + +#define IP_HDR_SIZE (sizeof(struct ip_hdr)) + +#define IP_MIN_FRAG_DATAGRAM_SIZE (IP_HDR_SIZE + 8) + +/* + * Address Resolution Protocol (ARP) header. + */ +struct arp_hdr { + u16 ar_hrd; /* Format of hardware address */ +# define ARP_ETHER 1 /* Ethernet hardware address */ + u16 ar_pro; /* Format of protocol address */ + u8 ar_hln; /* Length of hardware address */ + u8 ar_pln; /* Length of protocol address */ +# define ARP_PLEN 4 + u16 ar_op; /* Operation */ +# define ARPOP_REQUEST 1 /* Request to resolve address */ +# define ARPOP_REPLY 2 /* Response to previous request */ + +# define RARPOP_REQUEST 3 /* Request to resolve address */ +# define RARPOP_REPLY 4 /* Response to previous request */ + + /* + * The remaining fields are variable in size, according to + * the sizes above, and are defined as appropriate for + * specific hardware/protocol combinations. + */ + u8 ar_data[0]; +#define ar_sha ar_data[0] +#define ar_spa ar_data[ARP_HLEN] +#define ar_tha ar_data[ARP_HLEN + ARP_PLEN] +#define ar_tpa ar_data[ARP_HLEN + ARP_PLEN + ARP_HLEN] +#if 0 + u8 ar_sha[]; /* Sender hardware address */ + u8 ar_spa[]; /* Sender protocol address */ + u8 ar_tha[]; /* Target hardware address */ + u8 ar_tpa[]; /* Target protocol address */ +#endif /* 0 */ +} __attribute__((packed)); + + +/* + * ICMP stuff (just enough to handle (host) redirect messages) + */ +#define ICMP_ECHO_REPLY 0 /* Echo reply */ +#define ICMP_NOT_REACH 3 /* Detination unreachable */ +#define ICMP_REDIRECT 5 /* Redirect (change route) */ +#define ICMP_ECHO_REQUEST 8 /* Echo request */ + +/* Codes for REDIRECT. */ +#define ICMP_REDIR_NET 0 /* Redirect Net */ +#define ICMP_REDIR_HOST 1 /* Redirect Host */ + +/* Codes for NOT_REACH */ +#define ICMP_NOT_REACH_PORT 3 /* Port unreachable */ + +struct icmp_hdr { + u8 type; + u8 code; + u16 checksum; + union { + struct { + u16 id; + u16 sequence; + } echo; + u32 gateway; + struct { + u16 unused; + u16 mtu; + } frag; + u8 data[0]; + } un; +} __attribute__((packed)); + +#define ICMP_HDR_SIZE (sizeof(struct icmp_hdr)) +#define IP_ICMP_HDR_SIZE (IP_HDR_SIZE + ICMP_HDR_SIZE) + +/* + * Maximum packet size; used to allocate packet storage. Use + * the maxium Ethernet frame size as specified by the Ethernet + * standard including the 802.1Q tag (VLAN tagging). + * maximum packet size = 1522 + * maximum packet size and multiple of 32 bytes = 1536 + */ +#define PKTSIZE 1522 +#ifndef CONFIG_DM_DSA +#define PKTSIZE_ALIGN 1536 +#else +/* Maximum DSA tagging overhead (headroom and/or tailroom) */ +#define DSA_MAX_OVR 256 +#define PKTSIZE_ALIGN (1536 + DSA_MAX_OVR) +#endif + +/**********************************************************************/ +/* + * Globals. + * + * Note: + * + * All variables of type struct in_addr are stored in NETWORK byte order + * (big endian). + */ + +/* net.c */ +/** BOOTP EXTENTIONS **/ +extern struct in_addr net_gateway; /* Our gateway IP address */ +extern struct in_addr net_netmask; /* Our subnet mask (0 = unknown) */ +/* Our Domain Name Server (0 = unknown) */ +extern struct in_addr net_dns_server; +#if defined(CONFIG_BOOTP_DNS2) +/* Our 2nd Domain Name Server (0 = unknown) */ +extern struct in_addr net_dns_server2; +#endif +extern char net_nis_domain[32]; /* Our IS domain */ +extern char net_hostname[32]; /* Our hostname */ +#ifdef CONFIG_NET +extern char net_root_path[CONFIG_BOOTP_MAX_ROOT_PATH_LEN]; /* Our root path */ +#endif +/* Indicates whether the pxe path prefix / config file was specified in dhcp option */ +extern char *pxelinux_configfile; +/** END OF BOOTP EXTENTIONS **/ +extern u8 net_ethaddr[ARP_HLEN]; /* Our ethernet address */ +extern u8 net_server_ethaddr[ARP_HLEN]; /* Boot server enet address */ +extern struct in_addr net_ip; /* Our IP addr (0 = unknown) */ +extern struct in_addr net_server_ip; /* Server IP addr (0 = unknown) */ +extern uchar *net_tx_packet; /* THE transmit packet */ +extern uchar *net_rx_packets[PKTBUFSRX]; /* Receive packets */ +extern uchar *net_rx_packet; /* Current receive packet */ +extern int net_rx_packet_len; /* Current rx packet length */ +extern const u8 net_null_ethaddr[ARP_HLEN]; + +#define VLAN_NONE 4095 /* untagged */ +#define VLAN_IDMASK 0x0fff /* mask of valid vlan id */ +extern ushort net_our_vlan; /* Our VLAN */ +extern ushort net_native_vlan; /* Our Native VLAN */ + +extern int net_restart_wrap; /* Tried all network devices */ + +enum proto_t { + BOOTP, RARP, ARP, TFTPGET, DHCP, DHCP6, PING, PING6, DNS, NFS, CDP, + NETCONS, SNTP, TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT_UDP, FASTBOOT_TCP, + WOL, UDP, NCSI, WGET, RS +}; +/* Indicates whether the file name was specified on the command line */ +extern bool net_boot_file_name_explicit; +/* The actual transferred size of the bootfile (in bytes) */ +extern u32 net_boot_file_size; +/* Boot file size in blocks as reported by the DHCP server */ +extern u32 net_boot_file_expected_size_in_blocks; + +#if defined(CONFIG_CMD_DNS) +extern char *net_dns_resolve; /* The host to resolve */ +extern char *net_dns_env_var; /* the env var to put the ip into */ +#endif + +#if defined(CONFIG_CMD_PING) +extern struct in_addr net_ping_ip; /* the ip address to ping */ +#endif + +#if defined(CONFIG_CMD_CDP) +/* when CDP completes these hold the return values */ +extern ushort cdp_native_vlan; /* CDP returned native VLAN */ +extern ushort cdp_appliance_vlan; /* CDP returned appliance VLAN */ + +/* + * Check for a CDP packet by examining the received MAC address field + */ +static inline int is_cdp_packet(const uchar *ethaddr) +{ + extern const u8 net_cdp_ethaddr[ARP_HLEN]; + + return memcmp(ethaddr, net_cdp_ethaddr, ARP_HLEN) == 0; +} +#endif + +#if defined(CONFIG_CMD_SNTP) +extern struct in_addr net_ntp_server; /* the ip address to NTP */ +extern int net_ntp_time_offset; /* offset time from UTC */ +#endif + +int net_loop(enum proto_t); + +/* Load failed. Start again. */ +int net_start_again(void); + +/* Get size of the ethernet header when we send */ +int net_eth_hdr_size(void); + +/* Set ethernet header; returns the size of the header */ +int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot); +int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot); + +/* Set IP header */ +void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source, + u16 pkt_len, u8 proto); +void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, + int sport, int len); + +/* Callbacks */ +rxhand_f *net_get_udp_handler(void); /* Get UDP RX packet handler */ +void net_set_udp_handler(rxhand_f *); /* Set UDP RX packet handler */ +rxhand_f *net_get_arp_handler(void); /* Get ARP RX packet handler */ +void net_set_arp_handler(rxhand_f *); /* Set ARP RX packet handler */ +bool arp_is_waiting(void); /* Waiting for ARP reply? */ +void net_set_icmp_handler(rxhand_icmp_f *f); /* Set ICMP RX handler */ +void net_set_timeout_handler(ulong, thand_f *);/* Set timeout handler */ + +/* Network loop state */ +enum net_loop_state { + NETLOOP_CONTINUE, + NETLOOP_RESTART, + NETLOOP_SUCCESS, + NETLOOP_FAIL +}; +extern enum net_loop_state net_state; + +static inline void net_set_state(enum net_loop_state state) +{ + debug_cond(DEBUG_INT_STATE, "--- NetState set to %d\n", state); + net_state = state; +} + +/* + * net_get_async_tx_pkt_buf - Get a packet buffer that is not in use for + * sending an asynchronous reply + * + * returns - ptr to packet buffer + */ +uchar * net_get_async_tx_pkt_buf(void); + +/** + * net_send_ip_packet() - Transmit "net_tx_packet" as UDP or TCP packet, + * send ARP request if needed (ether will be populated) + * @ether: Raw packet buffer + * @dest: IP address to send the datagram to + * @dport: Destination UDP port + * @sport: Source UDP port + * @payload_len: Length of data after the UDP header + * @action: TCP action to be performed + * @tcp_seq_num: TCP sequence number of this transmission + * @tcp_ack_num: TCP stream acknolegement number + * + * Return: 0 on success, other value on failure + */ +int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport, + int payload_len, int proto, u8 action, u32 tcp_seq_num, + u32 tcp_ack_num); +/** + * net_send_tcp_packet() - Transmit TCP packet. + * @payload_len: length of payload + * @dport: Destination TCP port + * @sport: Source TCP port + * @action: TCP action to be performed + * @tcp_seq_num: TCP sequence number of this transmission + * @tcp_ack_num: TCP stream acknolegement number + * + * Return: 0 on success, other value on failure + */ +int net_send_tcp_packet(int payload_len, int dport, int sport, u8 action, + u32 tcp_seq_num, u32 tcp_ack_num); +int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, + int sport, int payload_len); + +#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_XPL_BUILD) +void nc_start(void); +int nc_input_packet(uchar *pkt, struct in_addr src_ip, unsigned dest_port, + unsigned src_port, unsigned len); +#endif + +static __always_inline int eth_is_on_demand_init(void) +{ +#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_XPL_BUILD) + extern enum proto_t net_loop_last_protocol; + + return net_loop_last_protocol != NETCONS; +#else + return 1; +#endif +} + +static inline void eth_set_last_protocol(int protocol) +{ +#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_XPL_BUILD) + extern enum proto_t net_loop_last_protocol; + + net_loop_last_protocol = protocol; +#endif +} + +/* + * Check if autoload is enabled. If so, use either NFS or TFTP to download + * the boot file. + */ +void net_auto_load(void); + +/* + * The following functions are a bit ugly, but necessary to deal with + * alignment restrictions on ARM. + * + * We're using inline functions, which had the smallest memory + * footprint in our tests. + */ +/* return IP *in network byteorder* */ +static inline struct in_addr net_read_ip(void *from) +{ + struct in_addr ip; + + memcpy((void *)&ip, (void *)from, sizeof(ip)); + return ip; +} + +/* return ulong *in network byteorder* */ +static inline u32 net_read_u32(void *from) +{ + u32 l; + + memcpy((void *)&l, (void *)from, sizeof(l)); + return l; +} + +/* write IP *in network byteorder* */ +static inline void net_write_ip(void *to, struct in_addr ip) +{ + memcpy(to, (void *)&ip, sizeof(ip)); +} + +/* copy IP */ +static inline void net_copy_ip(void *to, void *from) +{ + memcpy((void *)to, from, sizeof(struct in_addr)); +} + +/* copy ulong */ +static inline void net_copy_u32(void *to, void *from) +{ + memcpy((void *)to, (void *)from, sizeof(u32)); +} + +/* Convert an IP address to a string */ +void ip_to_string(struct in_addr x, char *s); + +/** + * string_to_ip() - Convert a string to ip address + * + * Implemented in lib/net_utils.c (built unconditionally) + * + * @s: Input string to parse + * @return: in_addr struct containing the parsed IP address + */ +struct in_addr string_to_ip(const char *s); + +/* Convert a VLAN id to a string */ +void vlan_to_string(ushort x, char *s); + +/* Convert a string to a vlan id */ +ushort string_to_vlan(const char *s); + +/* read a VLAN id from an environment variable */ +ushort env_get_vlan(char *); + +/* check if serverip is specified in filename from the command line */ +int is_serverip_in_cmd(void); + +/** + * net_parse_bootfile - Parse the bootfile env var / cmd line param + * + * @param ipaddr - a pointer to the ipaddr to populate if included in bootfile + * @param filename - a pointer to the string to save the filename part + * @param max_len - The longest - 1 that the filename part can be + * + * return 1 if parsed, 0 if bootfile is empty + */ +int net_parse_bootfile(struct in_addr *ipaddr, char *filename, int max_len); + +#endif /* __NET_LEGACY_H__ */ |