X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=sidebyside;f=include%2Fnet.h;h=3da35fe981880500b9025ca813164c27a2aa8bdb;hb=d1c3310d4084488ff483843724d42cd394ae1786;hp=92afc190346ed45f8e1060956f6bb1b6f46ff1a9;hpb=2ab5be7af009b4a40efe2fa5471497c97e70ed28;p=u-boot diff --git a/include/net.h b/include/net.h index 92afc19034..3da35fe981 100644 --- a/include/net.h +++ b/include/net.h @@ -3,7 +3,7 @@ * * Copyright 1994 - 2000 Neil Russell. * (See License) - * + * SPDX-License-Identifier: GPL-2.0 * * History * 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added @@ -19,6 +19,10 @@ #include #include /* for nton* / ntoh* stuff */ +#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 */ /* * The number of receive packet buffers, and the required packet buffer @@ -35,7 +39,7 @@ #define PKTALIGN ARCH_DMA_MINALIGN /* IPv4 addresses are always 32 bits in size */ -typedef u32 IPaddr_t; +typedef __be32 IPaddr_t; /** @@ -77,7 +81,7 @@ enum eth_state_t { struct eth_device { char name[16]; unsigned char enetaddr[6]; - int iobase; + phys_addr_t iobase; int state; int (*init) (struct eth_device *, bd_t *); @@ -85,7 +89,7 @@ struct eth_device { int (*recv) (struct eth_device *); void (*halt) (struct eth_device *); #ifdef CONFIG_MCAST_TFTP - int (*mcast) (struct eth_device *, u32 ip, u8 set); + int (*mcast) (struct eth_device *, const u8 *enetaddr, u8 set); #endif int (*write_hwaddr) (struct eth_device *); struct eth_device *next; @@ -98,7 +102,15 @@ extern int eth_register(struct eth_device* dev);/* Register network device */ extern int eth_unregister(struct eth_device *dev);/* Remove network device */ extern void eth_try_another(int first_restart); /* Change the device */ extern void eth_set_current(void); /* set nterface to ethcur var */ -extern struct eth_device *eth_get_dev(void); /* get the current device MAC */ + +/* get the current device MAC */ +extern struct eth_device *eth_current; + +static inline __attribute__((always_inline)) +struct eth_device *eth_get_dev(void) +{ + return eth_current; +} extern struct eth_device *eth_get_dev_by_name(const char *devname); extern struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */ extern int eth_get_dev_index(void); /* get the device index */ @@ -130,6 +142,19 @@ extern int eth_rx(void); /* Check for received packets */ extern void eth_halt(void); /* stop SCC */ extern char *eth_get_name(void); /* get name of current device */ +/* Set active state */ +static inline __attribute__((always_inline)) int eth_init_state_only(bd_t *bis) +{ + eth_get_dev()->state = ETH_STATE_ACTIVE; + + return 0; +} +/* Set passive state */ +static inline __attribute__((always_inline)) void eth_halt_state_only(void) +{ + eth_get_dev()->state = ETH_STATE_PASSIVE; +} + /* * Set the hardware address for an ethernet interface based on 'eth%daddr' * environment variable (or just 'ethaddr' if eth_number is 0). @@ -156,7 +181,17 @@ u32 ether_crc(size_t len, unsigned char const *p); /* * Ethernet header */ -typedef struct { + +struct ethernet_hdr { + uchar et_dest[6]; /* Destination node */ + uchar et_src[6]; /* Source node */ + ushort et_protlen; /* Protocol or length */ +}; + +/* Ethernet header size */ +#define ETHER_HDR_SIZE (sizeof(struct ethernet_hdr)) + +struct e802_hdr { uchar et_dest[6]; /* Destination node */ uchar et_src[6]; /* Source node */ ushort et_protlen; /* Protocol or length */ @@ -167,23 +202,24 @@ typedef struct { uchar et_snap2; uchar et_snap3; ushort et_prot; /* 802 protocol */ -} Ethernet_t; +}; -#define ETHER_HDR_SIZE 14 /* Ethernet header size */ -#define E802_HDR_SIZE 22 /* 802 ethernet header size */ +/* 802 + SNAP + ethernet header size */ +#define E802_HDR_SIZE (sizeof(struct e802_hdr)) /* - * Ethernet header + * Virtual LAN Ethernet header */ -typedef struct { +struct vlan_ethernet_hdr { uchar vet_dest[6]; /* Destination node */ uchar vet_src[6]; /* Source node */ ushort vet_vlan_type; /* PROT_VLAN */ ushort vet_tag; /* TAG of VLAN */ ushort vet_type; /* protocol type */ -} VLAN_Ethernet_t; +}; -#define VLAN_ETHER_HDR_SIZE 18 /* VLAN Ethernet header size */ +/* VLAN Ethernet header size */ +#define VLAN_ETHER_HDR_SIZE (sizeof(struct vlan_ethernet_hdr)) #define PROT_IP 0x0800 /* IP protocol */ #define PROT_ARP 0x0806 /* IP ARP protocol */ @@ -196,7 +232,7 @@ typedef struct { /* * Internet Protocol (IP) header. */ -typedef struct { +struct ip_hdr { uchar ip_hl_v; /* header length and version */ uchar ip_tos; /* type of service */ ushort ip_len; /* total length */ @@ -207,11 +243,7 @@ typedef struct { ushort ip_sum; /* checksum */ IPaddr_t ip_src; /* Source IP address */ IPaddr_t ip_dst; /* Destination IP address */ - ushort udp_src; /* UDP source port */ - ushort udp_dst; /* UDP destination port */ - ushort udp_len; /* Length of UDP packet */ - ushort udp_xsum; /* Checksum */ -} IP_t; +}; #define IP_OFFS 0x1fff /* ip offset *= 8 */ #define IP_FLAGS 0xe000 /* first 3 bits */ @@ -219,20 +251,42 @@ typedef struct { #define IP_FLAGS_DFRAG 0x4000 /* don't fragments */ #define IP_FLAGS_MFRAG 0x2000 /* more fragments */ -#define IP_HDR_SIZE_NO_UDP (sizeof(IP_t) - 8) -#define IP_HDR_SIZE (sizeof(IP_t)) +#define IP_HDR_SIZE (sizeof(struct ip_hdr)) + +/* + * Internet Protocol (IP) + UDP header. + */ +struct ip_udp_hdr { + uchar ip_hl_v; /* header length and version */ + uchar ip_tos; /* type of service */ + ushort ip_len; /* total length */ + ushort ip_id; /* identification */ + ushort ip_off; /* fragment offset field */ + uchar ip_ttl; /* time to live */ + uchar ip_p; /* protocol */ + ushort ip_sum; /* checksum */ + IPaddr_t ip_src; /* Source IP address */ + IPaddr_t ip_dst; /* Destination IP address */ + ushort udp_src; /* UDP source port */ + ushort udp_dst; /* UDP destination port */ + ushort udp_len; /* Length of UDP packet */ + ushort udp_xsum; /* Checksum */ +}; +#define IP_UDP_HDR_SIZE (sizeof(struct ip_udp_hdr)) +#define UDP_HDR_SIZE (IP_UDP_HDR_SIZE - IP_HDR_SIZE) /* * Address Resolution Protocol (ARP) header. */ -typedef struct -{ +struct arp_hdr { ushort ar_hrd; /* Format of hardware address */ # define ARP_ETHER 1 /* Ethernet hardware address */ ushort ar_pro; /* Format of protocol address */ uchar ar_hln; /* Length of hardware address */ +# define ARP_HLEN 6 uchar ar_pln; /* Length of protocol address */ +# define ARP_PLEN 4 ushort ar_op; /* Operation */ # define ARPOP_REQUEST 1 /* Request to resolve address */ # define ARPOP_REPLY 2 /* Response to previous request */ @@ -246,13 +300,17 @@ typedef struct * specific hardware/protocol combinations. */ uchar 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 uchar ar_sha[]; /* Sender hardware address */ uchar ar_spa[]; /* Sender protocol address */ uchar ar_tha[]; /* Target hardware address */ uchar ar_tpa[]; /* Target protocol address */ #endif /* 0 */ -} ARP_t; +}; #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */ @@ -271,7 +329,7 @@ typedef struct /* Codes for NOT_REACH */ #define ICMP_NOT_REACH_PORT 3 /* Port unreachable */ -typedef struct icmphdr { +struct icmp_hdr { uchar type; uchar code; ushort checksum; @@ -282,13 +340,15 @@ typedef struct icmphdr { } echo; ulong gateway; struct { - ushort __unused; + ushort unused; ushort mtu; } frag; uchar data[0]; } un; -} ICMP_t; +}; +#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. @@ -356,21 +416,11 @@ extern uchar NetEtherNullAddr[6]; extern ushort NetOurVLAN; /* Our VLAN */ extern ushort NetOurNativeVLAN; /* Our Native VLAN */ -extern uchar NetCDPAddr[6]; /* Ethernet CDP address */ -extern ushort CDPNativeVLAN; /* CDP returned native VLAN */ -extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */ - -extern int NetState; /* Network loop state */ -#define NETLOOP_CONTINUE 1 -#define NETLOOP_RESTART 2 -#define NETLOOP_SUCCESS 3 -#define NETLOOP_FAIL 4 - extern int NetRestartWrap; /* Tried all network devices */ enum proto_t { BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP, - TFTPSRV, TFTPPUT + TFTPSRV, TFTPPUT, LINKLOCAL }; /* from net/net.c */ @@ -387,8 +437,18 @@ extern IPaddr_t NetPingIP; /* the ip address to ping */ #if defined(CONFIG_CMD_CDP) /* when CDP completes these hold the return values */ -extern ushort CDPNativeVLAN; -extern ushort CDPApplianceVLAN; +extern ushort CDPNativeVLAN; /* CDP returned native VLAN */ +extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */ + +/* + * Check for a CDP packet by examining the received MAC address field + */ +static inline int is_cdp_packet(const uchar *et_addr) +{ + extern const uchar NetCDPAddr[6]; + + return memcmp(et_addr, NetCDPAddr, 6) == 0; +} #endif #if defined(CONFIG_CMD_SNTP) @@ -401,6 +461,7 @@ extern IPaddr_t Mcast_addr; #endif /* Initialize the network adapter */ +extern void net_init(void); extern int NetLoop(enum proto_t); /* Shutdown adapters and cleanup */ @@ -414,33 +475,87 @@ extern int NetEthHdrSize(void); /* Set ethernet header; returns the size of the header */ extern int NetSetEther(uchar *, uchar *, uint); +extern int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot); /* Set IP header */ -extern void NetSetIP(uchar *, IPaddr_t, int, int, int); +extern void net_set_ip_header(uchar *pkt, IPaddr_t dest, IPaddr_t source); +extern void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport, + int sport, int len); /* Checksum */ extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */ extern uint NetCksum(uchar *, int); /* Calculate the checksum */ -/* Set callbacks */ -extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */ +/* Callbacks */ +extern rxhand_f *net_get_udp_handler(void); /* Get UDP RX packet handler */ +extern void net_set_udp_handler(rxhand_f *); /* Set UDP RX packet handler */ +extern rxhand_f *net_get_arp_handler(void); /* Get ARP RX packet handler */ +extern void net_set_arp_handler(rxhand_f *); /* Set ARP RX packet handler */ extern void net_set_icmp_handler(rxhand_icmp_f *f); /* Set ICMP RX handler */ extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */ -/* Transmit "NetTxPacket" */ -extern void NetSendPacket(uchar *, int); +/* 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; +} -/* Transmit UDP packet, performing ARP request if needed */ -extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, - int sport, int len); +/* Transmit a packet */ +static inline void NetSendPacket(uchar *pkt, int len) +{ + (void) eth_send(pkt, len); +} + +/* + * Transmit "NetTxPacket" as UDP packet, performing ARP request if needed + * (ether will be populated) + * + * @param ether Raw packet buffer + * @param dest IP address to send the datagram to + * @param dport Destination UDP port + * @param sport Source UDP port + * @param payload_len Length of data after the UDP header + */ +extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, + int sport, int payload_len); /* Processes a received packet */ extern void NetReceive(uchar *, int); #ifdef CONFIG_NETCONSOLE void NcStart(void); -int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len); +int nc_input_packet(uchar *pkt, IPaddr_t src_ip, unsigned dest_port, + unsigned src_port, unsigned len); +#endif + +static inline __attribute__((always_inline)) int eth_is_on_demand_init(void) +{ +#ifdef CONFIG_NETCONSOLE + 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) +{ +#ifdef CONFIG_NETCONSOLE + 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 @@ -542,6 +657,25 @@ static inline int is_valid_ether_addr(const u8 *addr) return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr); } +/** + * eth_random_addr - Generate software assigned random Ethernet address + * @addr: Pointer to a six-byte array containing the Ethernet address + * + * Generate a random Ethernet address (MAC) that is not multicast + * and has the local assigned bit set. + */ +static inline void eth_random_addr(uchar *addr) +{ + int i; + unsigned int seed = get_timer(0); + + for (i = 0; i < 6; i++) + addr[i] = rand_r(&seed); + + addr[0] &= 0xfe; /* clear multicast bit */ + addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ +} + /* Convert an IP address to a string */ extern void ip_to_string(IPaddr_t x, char *s); @@ -563,6 +697,9 @@ extern void copy_filename(char *dst, const char *src, int size); /* get a random source port */ extern unsigned int random_port(void); +/* Update U-Boot over TFTP */ +extern int update_tftp(ulong addr); + /**********************************************************************/ #endif /* __NET_H__ */