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u-boot/include/net.h
Simon Glass caa4daa2ae dm: treewide: Rename 'platdata' variables to just 'plat' 
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).

Rename some of the latter variables to end with 'plat' for consistency.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 16:51:08 -07:00

937 lines
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/* 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_H__
#define __NET_H__
#include <linux/types.h>
#include <asm/cache.h>
#include <asm/byteorder.h> /* for nton* / ntoh* stuff */
#include <env.h>
#include <log.h>
#include <time.h>
#include <linux/if_ether.h>
#include <rand.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 */
/*
* The number of receive packet buffers, and the required packet buffer
* alignment in memory.
*
*/
#ifdef CONFIG_SYS_RX_ETH_BUFFER
# define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER
#else
# define PKTBUFSRX 4
#endif
#define PKTALIGN ARCH_DMA_MINALIGN
/* Number of packets processed together */
#define ETH_PACKETS_BATCH_RECV 32
/* 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)
/* IPv4 addresses are always 32 bits in size */
struct in_addr {
__be32 s_addr;
};
/**
* do_tftpb - Run the tftpboot command
*
* @cmdtp: Command information for tftpboot
* @flag: Command flags (CMD_FLAG_...)
* @argc: Number of arguments
* @argv: List of arguments
* @return result (see enum command_ret_t)
*/
int do_tftpb(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
/**
* 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);
enum eth_state_t {
ETH_STATE_INIT,
ETH_STATE_PASSIVE,
ETH_STATE_ACTIVE
};
#ifdef CONFIG_DM_ETH
/**
* struct eth_pdata - Platform data for Ethernet MAC controllers
*
* @iobase: The base address of the hardware registers
* @enetaddr: The Ethernet MAC address that is loaded from EEPROM or env
* @phy_interface: PHY interface to use - see PHY_INTERFACE_MODE_...
* @max_speed: Maximum speed of Ethernet connection supported by MAC
* @priv_pdata: device specific plat
*/
struct eth_pdata {
phys_addr_t iobase;
unsigned char enetaddr[ARP_HLEN];
int phy_interface;
int max_speed;
void *priv_pdata;
};
enum eth_recv_flags {
/*
* Check hardware device for new packets (otherwise only return those
* which are already in the memory buffer ready to process)
*/
ETH_RECV_CHECK_DEVICE = 1 << 0,
};
/**
* struct eth_ops - functions of Ethernet MAC controllers
*
* start: Prepare the hardware to send and receive packets
* send: Send the bytes passed in "packet" as a packet on the wire
* recv: Check if the hardware received a packet. If so, set the pointer to the
* packet buffer in the packetp parameter. If not, return an error or 0 to
* indicate that the hardware receive FIFO is empty. If 0 is returned, the
* network stack will not process the empty packet, but free_pkt() will be
* called if supplied
* free_pkt: Give the driver an opportunity to manage its packet buffer memory
* when the network stack is finished processing it. This will only be
* called when no error was returned from recv - optional
* stop: Stop the hardware from looking for packets - may be called even if
* state == PASSIVE
* mcast: Join or leave a multicast group (for TFTP) - optional
* write_hwaddr: Write a MAC address to the hardware (used to pass it to Linux
* on some platforms like ARM). This function expects the
* eth_pdata::enetaddr field to be populated. The method can
* return -ENOSYS to indicate that this is not implemented for
this hardware - optional.
* read_rom_hwaddr: Some devices have a backup of the MAC address stored in a
* ROM on the board. This is how the driver should expose it
* to the network stack. This function should fill in the
* eth_pdata::enetaddr field - optional
*/
struct eth_ops {
int (*start)(struct udevice *dev);
int (*send)(struct udevice *dev, void *packet, int length);
int (*recv)(struct udevice *dev, int flags, uchar **packetp);
int (*free_pkt)(struct udevice *dev, uchar *packet, int length);
void (*stop)(struct udevice *dev);
int (*mcast)(struct udevice *dev, const u8 *enetaddr, int join);
int (*write_hwaddr)(struct udevice *dev);
int (*read_rom_hwaddr)(struct udevice *dev);
};
#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops)
struct udevice *eth_get_dev(void); /* get the current device */
/*
* 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);
unsigned char *eth_get_ethaddr(void); /* get the current device MAC */
/* Used only when NetConsole is enabled */
int eth_is_active(struct udevice *dev); /* Test device for active state */
int eth_init_state_only(void); /* Set active state */
void eth_halt_state_only(void); /* Set passive state */
#endif
#ifndef CONFIG_DM_ETH
struct eth_device {
#define ETH_NAME_LEN 20
char name[ETH_NAME_LEN];
unsigned char enetaddr[ARP_HLEN];
phys_addr_t iobase;
int state;
int (*init)(struct eth_device *eth, struct bd_info *bd);
int (*send)(struct eth_device *, void *packet, int length);
int (*recv)(struct eth_device *);
void (*halt)(struct eth_device *);
int (*mcast)(struct eth_device *, const u8 *enetaddr, int join);
int (*write_hwaddr)(struct eth_device *eth);
struct eth_device *next;
int index;
void *priv;
};
int eth_register(struct eth_device *dev);/* Register network device */
int eth_unregister(struct eth_device *dev);/* Remove network device */
extern struct eth_device *eth_current;
static __always_inline struct eth_device *eth_get_dev(void)
{
return eth_current;
}
struct eth_device *eth_get_dev_by_name(const char *devname);
struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */
/* get the current device MAC */
static inline unsigned char *eth_get_ethaddr(void)
{
if (eth_current)
return eth_current->enetaddr;
return NULL;
}
/* Used only when NetConsole is enabled */
int eth_is_active(struct eth_device *dev); /* Test device for active state */
/* Set active state */
static __always_inline int eth_init_state_only(void)
{
eth_get_dev()->state = ETH_STATE_ACTIVE;
return 0;
}
/* Set passive state */
static __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).
* Args:
* base_name - base name for device (normally "eth")
* eth_number - value of %d (0 for first device of this type)
* Returns:
* 0 is success, non-zero is error status from driver.
*/
int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
int eth_number);
int usb_eth_initialize(struct bd_info *bi);
#endif
int eth_initialize(void); /* Initialize network subsystem */
void eth_try_another(int first_restart); /* Change the device */
void eth_set_current(void); /* set nterface to ethcur var */
int eth_get_dev_index(void); /* get the device index */
/**
* 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);
/*
* Initialize USB ethernet device with CONFIG_DM_ETH
* Returns:
* 0 is success, non-zero is error status.
*/
int usb_ether_init(void);
/*
* 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_init(void); /* Initialize the device */
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_rx(void); /* Check for received packets */
void eth_halt(void); /* stop SCC */
const char *eth_get_name(void); /* get name of current device */
int eth_mcast_join(struct in_addr mcast_addr, int join);
/**********************************************************************/
/*
* Protocol headers.
*/
/*
* Ethernet header
*/
struct ethernet_hdr {
u8 et_dest[ARP_HLEN]; /* Destination node */
u8 et_src[ARP_HLEN]; /* Source node */
u16 et_protlen; /* Protocol or length */
} __attribute__((packed));
/* Ethernet header size */
#define ETHER_HDR_SIZE (sizeof(struct ethernet_hdr))
#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))
#define PROT_IP 0x0800 /* IP protocol */
#define PROT_ARP 0x0806 /* IP ARP protocol */
#define PROT_WOL 0x0842 /* ether-wake WoL protocol */
#define PROT_RARP 0x8035 /* IP ARP protocol */
#define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
#define PROT_IPV6 0x86dd /* IPv6 over bluebook */
#define PROT_PPP_SES 0x8864 /* PPPoE session messages */
#define PROT_NCSI 0x88f8 /* NC-SI control packets */
#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
#define IPPROTO_UDP 17 /* User Datagram Protocol */
/*
* 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))
/*
* Internet Protocol (IP) + UDP header.
*/
struct ip_udp_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 */
u16 udp_src; /* UDP source port */
u16 udp_dst; /* UDP destination port */
u16 udp_len; /* Length of UDP packet */
u16 udp_xsum; /* Checksum */
} __attribute__((packed));
#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.
*/
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));
#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
/*
* 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
#define PKTSIZE_ALIGN 1536
/*
* Maximum receive ring size; that is, the number of packets
* we can buffer before overflow happens. Basically, this just
* needs to be enough to prevent a packet being discarded while
* we are processing the previous one.
*/
#define RINGSZ 4
#define RINGSZ_LOG2 2
/**********************************************************************/
/*
* 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 */
extern char net_root_path[64]; /* Our root path */
/** 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_bcast_ethaddr[ARP_HLEN]; /* Ethernet broadcast address */
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, PING, DNS, NFS, CDP, NETCONS, SNTP,
TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, WOL, UDP
};
extern char net_boot_file_name[1024];/* Boot File name */
/* 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
/* Initialize the network adapter */
int net_init(void);
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);
/**
* compute_ip_checksum() - Compute IP checksum
*
* @addr: Address to check (must be 16-bit aligned)
* @nbytes: Number of bytes to check (normally a multiple of 2)
* @return 16-bit IP checksum
*/
unsigned compute_ip_checksum(const void *addr, unsigned nbytes);
/**
* add_ip_checksums() - add two IP checksums
*
* @offset: Offset of first sum (if odd we do a byte-swap)
* @sum: First checksum
* @new_sum: New checksum to add
* @return updated 16-bit IP checksum
*/
unsigned add_ip_checksums(unsigned offset, unsigned sum, unsigned new_sum);
/**
* ip_checksum_ok() - check if a checksum is correct
*
* This works by making sure the checksum sums to 0
*
* @addr: Address to check (must be 16-bit aligned)
* @nbytes: Number of bytes to check (normally a multiple of 2)
* @return true if the checksum matches, false if not
*/
int ip_checksum_ok(const void *addr, unsigned nbytes);
/* 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);
/* Transmit a packet */
static inline void net_send_packet(uchar *pkt, int len)
{
/* Currently no way to return errors from eth_send() */
(void) eth_send(pkt, len);
}
/*
* Transmit "net_tx_packet" 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
*/
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);
int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport,
int sport, int payload_len);
/* Processes a received packet */
void net_process_received_packet(uchar *in_packet, int len);
#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_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_SPL_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_SPL_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));
}
/**
* is_zero_ethaddr - Determine if give Ethernet address is all zeros.
* @addr: Pointer to a six-byte array containing the Ethernet address
*
* Return true if the address is all zeroes.
*/
static inline int is_zero_ethaddr(const u8 *addr)
{
return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
}
/**
* is_multicast_ethaddr - Determine if the Ethernet address is a multicast.
* @addr: Pointer to a six-byte array containing the Ethernet address
*
* Return true if the address is a multicast address.
* By definition the broadcast address is also a multicast address.
*/
static inline int is_multicast_ethaddr(const u8 *addr)
{
return 0x01 & addr[0];
}
/*
* is_broadcast_ethaddr - Determine if the Ethernet address is broadcast
* @addr: Pointer to a six-byte array containing the Ethernet address
*
* Return true if the address is the broadcast address.
*/
static inline int is_broadcast_ethaddr(const u8 *addr)
{
return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) ==
0xff;
}
/*
* is_valid_ethaddr - Determine if the given Ethernet address is valid
* @addr: Pointer to a six-byte array containing the Ethernet address
*
* Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
* a multicast address, and is not FF:FF:FF:FF:FF:FF.
*
* Return true if the address is valid.
*/
static inline int is_valid_ethaddr(const u8 *addr)
{
/* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to
* explicitly check for it here. */
return !is_multicast_ethaddr(addr) && !is_zero_ethaddr(addr);
}
/**
* net_random_ethaddr - 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 net_random_ethaddr(uchar *addr)
{
int i;
unsigned int seed = get_ticks();
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) */
}
/**
* string_to_enetaddr() - Parse a MAC address
*
* Convert a string MAC address
*
* Implemented in lib/net_utils.c (built unconditionally)
*
* @addr: MAC address in aa:bb:cc:dd:ee:ff format, where each part is a 2-digit
* hex value
* @enetaddr: Place to put MAC address (6 bytes)
*/
void string_to_enetaddr(const char *addr, uint8_t *enetaddr);
/* 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 *);
/* copy a filename (allow for "..." notation, limit length) */
void copy_filename(char *dst, const char *src, int size);
/* 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);
/**
* update_tftp - Update firmware over TFTP (via DFU)
*
* This function updates board's firmware via TFTP
*
* @param addr - memory address where data is stored
* @param interface - the DFU medium name - e.g. "mmc"
* @param devstring - the DFU medium number - e.g. "1"
*
* @return - 0 on success, other value on failure
*/
int update_tftp(ulong addr, char *interface, char *devstring);
/**
* env_get_ip() - Convert an environment value to to an ip address
*
* @var: Environment variable to convert. The value of this variable must be
* in the format format a.b.c.d, where each value is a decimal number from
* 0 to 255
* @return IP address, or 0 if invalid
*/
static inline struct in_addr env_get_ip(char *var)
{
return string_to_ip(env_get(var));
}
/**
* reset_phy() - Reset the Ethernet PHY
*
* This should be implemented by boards if CONFIG_RESET_PHY_R is enabled
*/
void reset_phy(void);
#endif /* __NET_H__ */
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