diff mbox series

[v13,06/21] net: split net into net{,-common,-legacy,-lwip}

Message ID 08336130c275d1f510336a2c7f9b69a50f44567c.1729070678.git.jerome.forissier@linaro.org
State Accepted
Commit 1d5d292b79415abf3d0214cd2f707b43cf9fdfbf
Headers show
Series Introduce the lwIP network stack | expand

Commit Message

Jerome Forissier Oct. 16, 2024, 10:04 a.m. UTC
Make net.h a wrapper which includes net-common.h and either
net-legacy.h or net-lwip.h based on NET_LWIP. The function
copy_filename() can be useful when NET_LWIP is enabled, therefore
move it out of net/net.c which is built only when networking choice
is NET and create a new file net/net-common.c.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
---
 Makefile             |   4 +-
 include/net-common.h | 501 +++++++++++++++++++++++
 include/net-legacy.h | 544 +++++++++++++++++++++++++
 include/net-lwip.h   |  14 +
 include/net.h        | 943 +------------------------------------------
 net/Makefile         |   2 +
 net/net-common.c     |  13 +
 net/net.c            |  12 -
 8 files changed, 1081 insertions(+), 952 deletions(-)
 create mode 100644 include/net-common.h
 create mode 100644 include/net-legacy.h
 create mode 100644 include/net-lwip.h
 create mode 100644 net/net-common.c

Comments

Ilias Apalodimas Oct. 16, 2024, 1:30 p.m. UTC | #1
On Wed, 16 Oct 2024 at 13:04, Jerome Forissier
<jerome.forissier@linaro.org> wrote:
>
> Make net.h a wrapper which includes net-common.h and either
> net-legacy.h or net-lwip.h based on NET_LWIP. The function
> copy_filename() can be useful when NET_LWIP is enabled, therefore
> move it out of net/net.c which is built only when networking choice
> is NET and create a new file net/net-common.c.
>
> Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
> ---
>  Makefile             |   4 +-
>  include/net-common.h | 501 +++++++++++++++++++++++
>  include/net-legacy.h | 544 +++++++++++++++++++++++++
>  include/net-lwip.h   |  14 +
>  include/net.h        | 943 +------------------------------------------
>  net/Makefile         |   2 +
>  net/net-common.c     |  13 +
>  net/net.c            |  12 -
>  8 files changed, 1081 insertions(+), 952 deletions(-)
>  create mode 100644 include/net-common.h
>  create mode 100644 include/net-legacy.h
>  create mode 100644 include/net-lwip.h
>  create mode 100644 net/net-common.c
>
> diff --git a/Makefile b/Makefile
> index f203a4f59e0..a2e9435c4f8 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -842,7 +842,9 @@ UBOOTINCLUDE    := \
>                         -I$(srctree)/arch/arm/thumb1/include)) \
>         -I$(srctree)/arch/$(ARCH)/include \
>         -include $(srctree)/include/linux/kconfig.h \
> -       -I$(srctree)/dts/upstream/include
> +       -I$(srctree)/dts/upstream/include \
> +       $(if $(CONFIG_NET_LWIP), -I$(srctree)/lib/lwip/lwip/src/include \
> +               -I$(srctree)/lib/lwip/u-boot)
>
>  NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
>
> diff --git a/include/net-common.h b/include/net-common.h
> new file mode 100644
> index 00000000000..543f528a4a4
> --- /dev/null
> +++ b/include/net-common.h
> @@ -0,0 +1,501 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +
> +#ifndef __NET_COMMON_H__
> +#define __NET_COMMON_H__
> +
> +#include <asm/cache.h>
> +#include <command.h>
> +#include <env.h>
> +#include <hexdump.h>
> +#include <linux/if_ether.h>
> +#include <linux/types.h>
> +#include <rand.h>
> +#include <time.h>
> +
> +#define DEBUG_NET_PKT_TRACE 0  /* Trace all packet data */
> +
> +/*
> + *     The number of receive packet buffers, and the required packet buffer
> + *     alignment in memory.
> + *
> + */
> +#define PKTBUFSRX      CONFIG_SYS_RX_ETH_BUFFER
> +#define PKTALIGN       ARCH_DMA_MINALIGN
> +
> +/* IPv4 addresses are always 32 bits in size */
> +struct in_addr {
> +       __be32 s_addr;
> +};
> +
> +#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_TCP    6       /* Transmission Control Protocol        */
> +#define IPPROTO_UDP    17      /* User Datagram Protocol               */
> +
> +#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)
> +
> +/*
> + *     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)
> +
> +/* 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)
> +
> +#define ARP_HDR_SIZE   (8+20)          /* Size assuming ethernet       */
> +
> +#   define ARP_ETHER       1           /* Ethernet  hardware address   */
> +
> +/*
> + * 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
> +
> +/*
> + * 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.
> + * Used only in drivers/net/mvgbe.c.
> + */
> +#define RINGSZ         4
> +#define RINGSZ_LOG2    2
> +
> +extern int             net_restart_wrap;       /* Tried all network devices */
> +extern uchar               *net_rx_packets[PKTBUFSRX]; /* Receive packets */
> +extern const u8                net_bcast_ethaddr[ARP_HLEN];    /* Ethernet broadcast address */
> +extern char    net_boot_file_name[1024];/* Boot File name */
> +
> +/**
> + * 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);
> +
> +/**
> + * 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);
> +
> +/**
> + * 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);
> +
> +/*
> + * 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_is_active(struct udevice *dev); /* Test device for active state */
> +
> +/*
> + * 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);
> +
> +/**
> + * 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);
> +
> +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 */
> +
> +/**
> + * reset_phy() - Reset the Ethernet PHY
> + *
> + * This should be implemented by boards if CONFIG_RESET_PHY_R is enabled
> + */
> +void reset_phy(void);
> +
> +#if CONFIG_IS_ENABLED(NET) || CONFIG_IS_ENABLED(NET_LWIP)
> +/**
> + * eth_set_enable_bootdevs() - Enable or disable binding of Ethernet bootdevs
> + *
> + * These get in the way of bootstd testing, so are normally disabled by tests.
> + * This provide control of this setting. It only affects binding of Ethernet
> + * devices, so if that has already happened, this flag does nothing.
> + *
> + * @enable: true to enable binding of bootdevs when binding new Ethernet
> + * devices, false to disable it
> + */
> +void eth_set_enable_bootdevs(bool enable);
> +#else
> +static inline void eth_set_enable_bootdevs(bool enable) {}
> +#endif
> +
> +static inline void net_send_packet(uchar *pkt, int len)
> +{
> +       if (DEBUG_NET_PKT_TRACE)
> +               print_hex_dump_bytes("tx: ", DUMP_PREFIX_OFFSET, pkt, len);
> +       /* Currently no way to return errors from eth_send() */
> +       (void) eth_send(pkt, len);
> +}
> +
> +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
> + * set_promisc: Enable or Disable promiscuous mode
> + * get_sset_count: Number of statistics counters
> + * get_string: Names of the statistic counters
> + * get_stats: The values of the statistic counters
> + */
> +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);
> +       int (*set_promisc)(struct udevice *dev, bool enable);
> +       int (*get_sset_count)(struct udevice *dev);
> +       void (*get_strings)(struct udevice *dev, u8 *data);
> +       void (*get_stats)(struct udevice *dev, u64 *data);
> +};
> +
> +#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops)
> +
> +struct udevice *eth_get_dev(void); /* get the current device */
> +unsigned char *eth_get_ethaddr(void); /* get the current device MAC */
> +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_get_dev_index(void);
> +
> +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 */
> +
> +enum eth_state_t {
> +       ETH_STATE_INIT,
> +       ETH_STATE_PASSIVE,
> +       ETH_STATE_ACTIVE
> +};
> +
> +/**
> + * 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;
> +};
> +
> +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))
> +
> +/**
> + * 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) */
> +}
> +
> +/**
> + * 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);
> +}
> +
> +/**
> + * 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);
> +
> +/**
> + * 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);
> +
> +/* copy a filename (allow for "..." notation, limit length) */
> +void copy_filename(char *dst, const char *src, int size);
> +
> +/* Processes a received packet */
> +void net_process_received_packet(uchar *in_packet, int 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));
> +}
> +
> +int net_init(void);
> +
> +/**
> + * dhcp_run() - Run DHCP on the current ethernet device
> + *
> + * This sets the autoload variable, then puts it back to similar to its original
> + * state (y, n or unset).
> + *
> + * @addr: Address to load the file into (0 if @autoload is false)
> + * @fname: Filename of file to load (NULL if @autoload is false or to use the
> + * default filename)
> + * @autoload: true to load the file, false to just get the network IP
> + * @return 0 if OK, -EINVAL if the environment failed, -ENOENT if ant file was
> + * not found
> + */
> +int dhcp_run(ulong addr, const char *fname, bool autoload);
> +
> +/**
> + * 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[]);
> +
> +/**
> + * wget_with_dns() - runs dns host IP address resulution before wget
> + *
> + * @dst_addr:  destination address to download the file
> + * @uri:       uri string of target file of wget
> + * Return:     downloaded file size, negative if failed
> + */
> +int wget_with_dns(ulong dst_addr, char *uri);
> +/**
> + * wget_validate_uri() - varidate the uri
> + *
> + * @uri:       uri string of target file of wget
> + * Return:     true if uri is valid, false if uri is invalid
> + */
> +bool wget_validate_uri(char *uri);
> +//int do_wget(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]);
> +
> +#endif /* __NET_COMMON_H__ */
> 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__ */
> diff --git a/include/net-lwip.h b/include/net-lwip.h
> new file mode 100644
> index 00000000000..5c3f9e7e86c
> --- /dev/null
> +++ b/include/net-lwip.h
> @@ -0,0 +1,14 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +
> +#ifndef __NET_LWIP_H__
> +#define __NET_LWIP_H__
> +
> +#include <lwip/ip4.h>
> +#include <lwip/netif.h>
> +
> +struct netif *net_lwip_new_netif(struct udevice *udev);
> +struct netif *net_lwip_new_netif_noip(struct udevice *udev);
> +void net_lwip_remove_netif(struct netif *netif);
> +struct netif *net_lwip_get_netif(void);
> +
> +#endif /* __NET_LWIP_H__ */
> diff --git a/include/net.h b/include/net.h
> index dc8b5e9cc34..afa46f239ee 100644
> --- a/include/net.h
> +++ b/include/net.h
> @@ -1,949 +1,14 @@
>  /* 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 <hexdump.h>
> -#include <log.h>
> -#include <time.h>
> -#include <linux/if_ether.h>
> -#include <rand.h>
> +#include <net-common.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 */
> -#define DEBUG_NET_PKT_TRACE 0  /* Trace all packet data */
> -
> -/*
> - *     The number of receive packet buffers, and the required packet buffer
> - *     alignment in memory.
> - *
> - */
> -#define PKTBUFSRX      CONFIG_SYS_RX_ETH_BUFFER
> -#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[]);
> -
> -/**
> - * dhcp_run() - Run DHCP on the current ethernet device
> - *
> - * This sets the autoload variable, then puts it back to similar to its original
> - * state (y, n or unset).
> - *
> - * @addr: Address to load the file into (0 if @autoload is false)
> - * @fname: Filename of file to load (NULL if @autoload is false or to use the
> - * default filename)
> - * @autoload: true to load the file, false to just get the network IP
> - * @return 0 if OK, -EINVAL if the environment failed, -ENOENT if ant file was
> - * not found
> - */
> -int dhcp_run(ulong addr, const char *fname, bool autoload);
> -
> -/**
> - * 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
> -};
> -
> -/**
> - * 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
> - * set_promisc: Enable or Disable promiscuous mode
> - * get_sset_count: Number of statistics counters
> - * get_string: Names of the statistic counters
> - * get_stats: The values of the statistic counters
> - */
> -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);
> -       int (*set_promisc)(struct udevice *dev, bool enable);
> -       int (*get_sset_count)(struct udevice *dev);
> -       void (*get_strings)(struct udevice *dev, u8 *data);
> -       void (*get_stats)(struct udevice *dev, u64 *data);
> -};
> -
> -#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 */
> -
> -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_TCP    6       /* Transmission Control 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))
> -
> -#define IP_MIN_FRAG_DATAGRAM_SIZE      (IP_HDR_SIZE + 8)
> -
> -/*
> - *     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
> -#ifndef CONFIG_DM_DSA
> -#define PKTSIZE_ALIGN          1536
> +#if defined(CONFIG_NET_LWIP)
> +#include <net-lwip.h>
>  #else
> -/* Maximum DSA tagging overhead (headroom and/or tailroom) */
> -#define DSA_MAX_OVR            256
> -#define PKTSIZE_ALIGN          (1536 + DSA_MAX_OVR)
> -#endif
> -
> -/*
> - * 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;
> +#include <net-legacy.h>
>  #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_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, DHCP6, PING, PING6, DNS, NFS, CDP,
> -       NETCONS, SNTP, TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT_UDP, FASTBOOT_TCP,
> -       WOL, UDP, NCSI, WGET, RS
> -};
> -
> -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)
> -{
> -       if (DEBUG_NET_PKT_TRACE)
> -               print_hex_dump_bytes("tx: ", DUMP_PREFIX_OFFSET, pkt, len);
> -       /* Currently no way to return errors from eth_send() */
> -       (void) eth_send(pkt, len);
> -}
> -
> -/**
> - * 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);
> -
> -/* Processes a received packet */
> -void net_process_received_packet(uchar *in_packet, int 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));
> -}
> -
> -/**
> - * 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);
> -
> -#if CONFIG_IS_ENABLED(NET)
> -/**
> - * eth_set_enable_bootdevs() - Enable or disable binding of Ethernet bootdevs
> - *
> - * These get in the way of bootstd testing, so are normally disabled by tests.
> - * This provide control of this setting. It only affects binding of Ethernet
> - * devices, so if that has already happened, this flag does nothing.
> - *
> - * @enable: true to enable binding of bootdevs when binding new Ethernet
> - * devices, false to disable it
> - */
> -void eth_set_enable_bootdevs(bool enable);
> -#else
> -static inline void eth_set_enable_bootdevs(bool enable) {}
> -#endif
> -
> -/**
> - * wget_with_dns() - runs dns host IP address resulution before wget
> - *
> - * @dst_addr:  destination address to download the file
> - * @uri:       uri string of target file of wget
> - * Return:     downloaded file size, negative if failed
> - */
> -int wget_with_dns(ulong dst_addr, char *uri);
> -
> -/**
> - * wget_validate_uri() - varidate the uri
> - *
> - * @uri:       uri string of target file of wget
> - * Return:     true if uri is valid, false if uri is invalid
> - */
> -bool wget_validate_uri(char *uri);
>
>  #endif /* __NET_H__ */
> diff --git a/net/Makefile b/net/Makefile
> index 33c82b5d229..34fe50133a3 100644
> --- a/net/Makefile
> +++ b/net/Makefile
> @@ -42,3 +42,5 @@ obj-$(CONFIG_CMD_WGET) += wget.o
>  CFLAGS_eth_common.o += -Wno-format-extra-args
>
>  endif
> +
> +obj-y += net-common.o
> diff --git a/net/net-common.c b/net/net-common.c
> new file mode 100644
> index 00000000000..a7f767d5e9c
> --- /dev/null
> +++ b/net/net-common.c
> @@ -0,0 +1,13 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +void copy_filename(char *dst, const char *src, int size)
> +{
> +       if (src && *src && (*src == '"')) {
> +               ++src;
> +               --size;
> +       }
> +
> +       while ((--size > 0) && src && *src && (*src != '"'))
> +               *dst++ = *src++;
> +       *dst = '\0';
> +}
> diff --git a/net/net.c b/net/net.c
> index 64bcf69d83f..f47e9fbe33a 100644
> --- a/net/net.c
> +++ b/net/net.c
> @@ -1693,18 +1693,6 @@ void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport,
>         ip->udp_xsum = 0;
>  }
>
> -void copy_filename(char *dst, const char *src, int size)
> -{
> -       if (src && *src && (*src == '"')) {
> -               ++src;
> -               --size;
> -       }
> -
> -       while ((--size > 0) && src && *src && (*src != '"'))
> -               *dst++ = *src++;
> -       *dst = '\0';
> -}
> -
>  int is_serverip_in_cmd(void)
>  {
>         return !!strchr(net_boot_file_name, ':');
> --
> 2.40.1
>

Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff mbox series

Patch

diff --git a/Makefile b/Makefile
index f203a4f59e0..a2e9435c4f8 100644
--- a/Makefile
+++ b/Makefile
@@ -842,7 +842,9 @@  UBOOTINCLUDE    := \
 			-I$(srctree)/arch/arm/thumb1/include)) \
 	-I$(srctree)/arch/$(ARCH)/include \
 	-include $(srctree)/include/linux/kconfig.h \
-	-I$(srctree)/dts/upstream/include
+	-I$(srctree)/dts/upstream/include \
+	$(if $(CONFIG_NET_LWIP), -I$(srctree)/lib/lwip/lwip/src/include \
+		-I$(srctree)/lib/lwip/u-boot)
 
 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 
diff --git a/include/net-common.h b/include/net-common.h
new file mode 100644
index 00000000000..543f528a4a4
--- /dev/null
+++ b/include/net-common.h
@@ -0,0 +1,501 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __NET_COMMON_H__
+#define __NET_COMMON_H__
+
+#include <asm/cache.h>
+#include <command.h>
+#include <env.h>
+#include <hexdump.h>
+#include <linux/if_ether.h>
+#include <linux/types.h>
+#include <rand.h>
+#include <time.h>
+
+#define DEBUG_NET_PKT_TRACE 0	/* Trace all packet data */
+
+/*
+ *	The number of receive packet buffers, and the required packet buffer
+ *	alignment in memory.
+ *
+ */
+#define PKTBUFSRX	CONFIG_SYS_RX_ETH_BUFFER
+#define PKTALIGN	ARCH_DMA_MINALIGN
+
+/* IPv4 addresses are always 32 bits in size */
+struct in_addr {
+	__be32 s_addr;
+};
+
+#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_TCP	6	/* Transmission Control Protocol	*/
+#define IPPROTO_UDP	17	/* User Datagram Protocol		*/
+
+#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)
+
+/*
+ *	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)
+
+/* 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)
+
+#define ARP_HDR_SIZE	(8+20)		/* Size assuming ethernet	*/
+
+#   define ARP_ETHER	    1		/* Ethernet  hardware address	*/
+
+/*
+ * 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
+
+/*
+ * 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.
+ * Used only in drivers/net/mvgbe.c.
+ */
+#define RINGSZ		4
+#define RINGSZ_LOG2	2
+
+extern int		net_restart_wrap;	/* Tried all network devices */
+extern uchar               *net_rx_packets[PKTBUFSRX]; /* Receive packets */
+extern const u8		net_bcast_ethaddr[ARP_HLEN];	/* Ethernet broadcast address */
+extern char	net_boot_file_name[1024];/* Boot File name */
+
+/**
+ * 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);
+
+/**
+ * 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);
+
+/**
+ * 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);
+
+/*
+ * 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_is_active(struct udevice *dev); /* Test device for active state */
+
+/*
+ * 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);
+
+/**
+ * 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);
+
+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 */
+
+/**
+ * reset_phy() - Reset the Ethernet PHY
+ *
+ * This should be implemented by boards if CONFIG_RESET_PHY_R is enabled
+ */
+void reset_phy(void);
+
+#if CONFIG_IS_ENABLED(NET) || CONFIG_IS_ENABLED(NET_LWIP)
+/**
+ * eth_set_enable_bootdevs() - Enable or disable binding of Ethernet bootdevs
+ *
+ * These get in the way of bootstd testing, so are normally disabled by tests.
+ * This provide control of this setting. It only affects binding of Ethernet
+ * devices, so if that has already happened, this flag does nothing.
+ *
+ * @enable: true to enable binding of bootdevs when binding new Ethernet
+ * devices, false to disable it
+ */
+void eth_set_enable_bootdevs(bool enable);
+#else
+static inline void eth_set_enable_bootdevs(bool enable) {}
+#endif
+
+static inline void net_send_packet(uchar *pkt, int len)
+{
+	if (DEBUG_NET_PKT_TRACE)
+		print_hex_dump_bytes("tx: ", DUMP_PREFIX_OFFSET, pkt, len);
+	/* Currently no way to return errors from eth_send() */
+	(void) eth_send(pkt, len);
+}
+
+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
+ * set_promisc: Enable or Disable promiscuous mode
+ * get_sset_count: Number of statistics counters
+ * get_string: Names of the statistic counters
+ * get_stats: The values of the statistic counters
+ */
+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);
+	int (*set_promisc)(struct udevice *dev, bool enable);
+	int (*get_sset_count)(struct udevice *dev);
+	void (*get_strings)(struct udevice *dev, u8 *data);
+	void (*get_stats)(struct udevice *dev, u64 *data);
+};
+
+#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops)
+
+struct udevice *eth_get_dev(void); /* get the current device */
+unsigned char *eth_get_ethaddr(void); /* get the current device MAC */
+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_get_dev_index(void);
+
+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 */
+
+enum eth_state_t {
+	ETH_STATE_INIT,
+	ETH_STATE_PASSIVE,
+	ETH_STATE_ACTIVE
+};
+
+/**
+ * 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;
+};
+
+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))
+
+/**
+ * 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) */
+}
+
+/**
+ * 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);
+}
+
+/**
+ * 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);
+
+/**
+ * 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);
+
+/* copy a filename (allow for "..." notation, limit length) */
+void copy_filename(char *dst, const char *src, int size);
+
+/* Processes a received packet */
+void net_process_received_packet(uchar *in_packet, int 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));
+}
+
+int net_init(void);
+
+/**
+ * dhcp_run() - Run DHCP on the current ethernet device
+ *
+ * This sets the autoload variable, then puts it back to similar to its original
+ * state (y, n or unset).
+ *
+ * @addr: Address to load the file into (0 if @autoload is false)
+ * @fname: Filename of file to load (NULL if @autoload is false or to use the
+ * default filename)
+ * @autoload: true to load the file, false to just get the network IP
+ * @return 0 if OK, -EINVAL if the environment failed, -ENOENT if ant file was
+ * not found
+ */
+int dhcp_run(ulong addr, const char *fname, bool autoload);
+
+/**
+ * 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[]);
+
+/**
+ * wget_with_dns() - runs dns host IP address resulution before wget
+ *
+ * @dst_addr:	destination address to download the file
+ * @uri:	uri string of target file of wget
+ * Return:	downloaded file size, negative if failed
+ */
+int wget_with_dns(ulong dst_addr, char *uri);
+/**
+ * wget_validate_uri() - varidate the uri
+ *
+ * @uri:	uri string of target file of wget
+ * Return:	true if uri is valid, false if uri is invalid
+ */
+bool wget_validate_uri(char *uri);
+//int do_wget(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]);
+
+#endif /* __NET_COMMON_H__ */
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__ */
diff --git a/include/net-lwip.h b/include/net-lwip.h
new file mode 100644
index 00000000000..5c3f9e7e86c
--- /dev/null
+++ b/include/net-lwip.h
@@ -0,0 +1,14 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __NET_LWIP_H__
+#define __NET_LWIP_H__
+
+#include <lwip/ip4.h>
+#include <lwip/netif.h>
+
+struct netif *net_lwip_new_netif(struct udevice *udev);
+struct netif *net_lwip_new_netif_noip(struct udevice *udev);
+void net_lwip_remove_netif(struct netif *netif);
+struct netif *net_lwip_get_netif(void);
+
+#endif /* __NET_LWIP_H__ */
diff --git a/include/net.h b/include/net.h
index dc8b5e9cc34..afa46f239ee 100644
--- a/include/net.h
+++ b/include/net.h
@@ -1,949 +1,14 @@ 
 /* 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 <hexdump.h>
-#include <log.h>
-#include <time.h>
-#include <linux/if_ether.h>
-#include <rand.h>
+#include <net-common.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 */
-#define DEBUG_NET_PKT_TRACE 0	/* Trace all packet data */
-
-/*
- *	The number of receive packet buffers, and the required packet buffer
- *	alignment in memory.
- *
- */
-#define PKTBUFSRX	CONFIG_SYS_RX_ETH_BUFFER
-#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[]);
-
-/**
- * dhcp_run() - Run DHCP on the current ethernet device
- *
- * This sets the autoload variable, then puts it back to similar to its original
- * state (y, n or unset).
- *
- * @addr: Address to load the file into (0 if @autoload is false)
- * @fname: Filename of file to load (NULL if @autoload is false or to use the
- * default filename)
- * @autoload: true to load the file, false to just get the network IP
- * @return 0 if OK, -EINVAL if the environment failed, -ENOENT if ant file was
- * not found
- */
-int dhcp_run(ulong addr, const char *fname, bool autoload);
-
-/**
- * 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
-};
-
-/**
- * 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
- * set_promisc: Enable or Disable promiscuous mode
- * get_sset_count: Number of statistics counters
- * get_string: Names of the statistic counters
- * get_stats: The values of the statistic counters
- */
-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);
-	int (*set_promisc)(struct udevice *dev, bool enable);
-	int (*get_sset_count)(struct udevice *dev);
-	void (*get_strings)(struct udevice *dev, u8 *data);
-	void (*get_stats)(struct udevice *dev, u64 *data);
-};
-
-#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 */
-
-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_TCP	6	/* Transmission Control 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))
-
-#define IP_MIN_FRAG_DATAGRAM_SIZE	(IP_HDR_SIZE + 8)
-
-/*
- *	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
-#ifndef CONFIG_DM_DSA
-#define PKTSIZE_ALIGN		1536
+#if defined(CONFIG_NET_LWIP)
+#include <net-lwip.h>
 #else
-/* Maximum DSA tagging overhead (headroom and/or tailroom) */
-#define DSA_MAX_OVR		256
-#define PKTSIZE_ALIGN		(1536 + DSA_MAX_OVR)
-#endif
-
-/*
- * 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;
+#include <net-legacy.h>
 #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_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, DHCP6, PING, PING6, DNS, NFS, CDP,
-	NETCONS, SNTP, TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT_UDP, FASTBOOT_TCP,
-	WOL, UDP, NCSI, WGET, RS
-};
-
-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)
-{
-	if (DEBUG_NET_PKT_TRACE)
-		print_hex_dump_bytes("tx: ", DUMP_PREFIX_OFFSET, pkt, len);
-	/* Currently no way to return errors from eth_send() */
-	(void) eth_send(pkt, len);
-}
-
-/**
- * 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);
-
-/* Processes a received packet */
-void net_process_received_packet(uchar *in_packet, int 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));
-}
-
-/**
- * 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);
-
-#if CONFIG_IS_ENABLED(NET)
-/**
- * eth_set_enable_bootdevs() - Enable or disable binding of Ethernet bootdevs
- *
- * These get in the way of bootstd testing, so are normally disabled by tests.
- * This provide control of this setting. It only affects binding of Ethernet
- * devices, so if that has already happened, this flag does nothing.
- *
- * @enable: true to enable binding of bootdevs when binding new Ethernet
- * devices, false to disable it
- */
-void eth_set_enable_bootdevs(bool enable);
-#else
-static inline void eth_set_enable_bootdevs(bool enable) {}
-#endif
-
-/**
- * wget_with_dns() - runs dns host IP address resulution before wget
- *
- * @dst_addr:	destination address to download the file
- * @uri:	uri string of target file of wget
- * Return:	downloaded file size, negative if failed
- */
-int wget_with_dns(ulong dst_addr, char *uri);
-
-/**
- * wget_validate_uri() - varidate the uri
- *
- * @uri:	uri string of target file of wget
- * Return:	true if uri is valid, false if uri is invalid
- */
-bool wget_validate_uri(char *uri);
 
 #endif /* __NET_H__ */
diff --git a/net/Makefile b/net/Makefile
index 33c82b5d229..34fe50133a3 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -42,3 +42,5 @@  obj-$(CONFIG_CMD_WGET) += wget.o
 CFLAGS_eth_common.o += -Wno-format-extra-args
 
 endif
+
+obj-y += net-common.o
diff --git a/net/net-common.c b/net/net-common.c
new file mode 100644
index 00000000000..a7f767d5e9c
--- /dev/null
+++ b/net/net-common.c
@@ -0,0 +1,13 @@ 
+// SPDX-License-Identifier: GPL-2.0
+
+void copy_filename(char *dst, const char *src, int size)
+{
+	if (src && *src && (*src == '"')) {
+		++src;
+		--size;
+	}
+
+	while ((--size > 0) && src && *src && (*src != '"'))
+		*dst++ = *src++;
+	*dst = '\0';
+}
diff --git a/net/net.c b/net/net.c
index 64bcf69d83f..f47e9fbe33a 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1693,18 +1693,6 @@  void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport,
 	ip->udp_xsum = 0;
 }
 
-void copy_filename(char *dst, const char *src, int size)
-{
-	if (src && *src && (*src == '"')) {
-		++src;
-		--size;
-	}
-
-	while ((--size > 0) && src && *src && (*src != '"'))
-		*dst++ = *src++;
-	*dst = '\0';
-}
-
 int is_serverip_in_cmd(void)
 {
 	return !!strchr(net_boot_file_name, ':');