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([2a01:e0a:3cb:7bb0:4fc9:a3ab:c134:cdf4]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36bbcf0cc58sm1970304f8f.2.2024.08.02.06.14.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Aug 2024 06:14:48 -0700 (PDT) From: Jerome Forissier To: u-boot@lists.denx.de Cc: Ilias Apalodimas , Javier Tia , Raymond Mao , Maxim Uvarov , Tim Harvey , Jerome Forissier , Tom Rini , Joe Hershberger , Ramon Fried , Simon Glass , Rasmus Villemoes , Sumit Garg , Andrew Davis , Heinrich Schuchardt , Bryan Brattlof , Jesse Taube , "Leon M. Busch-George" , Masahisa Kojima , Sean Anderson Subject: [PATCH v6 05/20] net: split include/net.h into net{, -common, -legacy, -lwip}.h Date: Fri, 2 Aug 2024 15:13:52 +0200 Message-Id: <06672059147e57c3e6ce1d420482b1a1ca8cf0ef.1722601509.git.jerome.forissier@linaro.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean Make net.h a wrapper which includes net-common.h and either net-legacy.h or net-lwip.h based on NET_LWIP. Signed-off-by: Jerome Forissier --- Makefile | 4 +- include/net-common.h | 432 ++++++++++++++++++++ include/net-legacy.h | 615 ++++++++++++++++++++++++++++ include/net-lwip.h | 14 + include/net.h | 944 +------------------------------------------ 5 files changed, 1068 insertions(+), 941 deletions(-) create mode 100644 include/net-common.h create mode 100644 include/net-legacy.h create mode 100644 include/net-lwip.h diff --git a/Makefile b/Makefile index 07d7947c8af..59925332c48 100644 --- a/Makefile +++ b/Makefile @@ -836,7 +836,9 @@ 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..0c294ad79f1 --- /dev/null +++ b/include/net-common.h @@ -0,0 +1,432 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef __NET_COMMON_H__ +#define __NET_COMMON_H__ + +#include +#include +#include +#include +#include +#include +#include +#include + +#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_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 + +extern int net_restart_wrap; /* Tried all network devices */ +extern uchar *net_rx_packets[PKTBUFSRX]; /* Receive packets */ + +/* + * 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 */ + +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); + +/* 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..e8e9fd02b2b --- /dev/null +++ b/include/net-legacy.h @@ -0,0 +1,615 @@ +/* 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 +#include /* for nton* / ntoh* stuff */ +#include +#include +#include + +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)); + +#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 +#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; +#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 + +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); + +/** + * 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_SPL_BUILD) +void nc_start(void); +int nc_input_packet(uchar *pkt, struct in_addr src_ip, unsigned dest_port, + unsigned src_port, unsigned len); +#endif + +static __always_inline int eth_is_on_demand_init(void) +{ +#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) + extern enum proto_t net_loop_last_protocol; + + return net_loop_last_protocol != NETCONS; +#else + return 1; +#endif +} + +static inline void eth_set_last_protocol(int protocol) +{ +#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) + extern enum proto_t net_loop_last_protocol; + + net_loop_last_protocol = protocol; +#endif +} + +/* + * Check if autoload is enabled. If so, use either NFS or TFTP to download + * the boot file. + */ +void net_auto_load(void); + +/* + * The following functions are a bit ugly, but necessary to deal with + * alignment restrictions on ARM. + * + * We're using inline functions, which had the smallest memory + * footprint in our tests. + */ +/* return IP *in network byteorder* */ +static inline struct in_addr net_read_ip(void *from) +{ + struct in_addr ip; + + memcpy((void *)&ip, (void *)from, sizeof(ip)); + return ip; +} + +/* return ulong *in network byteorder* */ +static inline u32 net_read_u32(void *from) +{ + u32 l; + + memcpy((void *)&l, (void *)from, sizeof(l)); + return l; +} + +/* write IP *in network byteorder* */ +static inline void net_write_ip(void *to, struct in_addr ip) +{ + memcpy(to, (void *)&ip, sizeof(ip)); +} + +/* copy IP */ +static inline void net_copy_ip(void *to, void *from) +{ + memcpy((void *)to, from, sizeof(struct in_addr)); +} + +/* copy ulong */ +static inline void net_copy_u32(void *to, void *from) +{ + memcpy((void *)to, (void *)from, sizeof(u32)); +} + +/* 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); + +/** + * 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 + +#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 +#include + +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 ac511eab103..afa46f239ee 100644 --- a/include/net.h +++ b/include/net.h @@ -1,950 +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 -#include -#include /* for nton* / ntoh* stuff */ -#include -#include -#include -#include -#include -#include +#include -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 -#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; -#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_SPL_BUILD) -void nc_start(void); -int nc_input_packet(uchar *pkt, struct in_addr src_ip, unsigned dest_port, - unsigned src_port, unsigned len); -#endif - -static __always_inline int eth_is_on_demand_init(void) -{ -#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) - extern enum proto_t net_loop_last_protocol; - - return net_loop_last_protocol != NETCONS; -#else - return 1; -#endif -} - -static inline void eth_set_last_protocol(int protocol) -{ -#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) - extern enum proto_t net_loop_last_protocol; - - net_loop_last_protocol = protocol; -#endif -} - -/* - * Check if autoload is enabled. If so, use either NFS or TFTP to download - * the boot file. - */ -void net_auto_load(void); - -/* - * The following functions are a bit ugly, but necessary to deal with - * alignment restrictions on ARM. - * - * We're using inline functions, which had the smallest memory - * footprint in our tests. - */ -/* return IP *in network byteorder* */ -static inline struct in_addr net_read_ip(void *from) -{ - struct in_addr ip; - - memcpy((void *)&ip, (void *)from, sizeof(ip)); - return ip; -} - -/* return ulong *in network byteorder* */ -static inline u32 net_read_u32(void *from) -{ - u32 l; - - memcpy((void *)&l, (void *)from, sizeof(l)); - return l; -} - -/* write IP *in network byteorder* */ -static inline void net_write_ip(void *to, struct in_addr ip) -{ - memcpy(to, (void *)&ip, sizeof(ip)); -} - -/* copy IP */ -static inline void net_copy_ip(void *to, void *from) -{ - memcpy((void *)to, from, sizeof(struct in_addr)); -} - -/* copy ulong */ -static inline void net_copy_u32(void *to, void *from) -{ - memcpy((void *)to, (void *)from, sizeof(u32)); -} - -/** - * is_zero_ethaddr - Determine if give Ethernet address is all zeros. - * @addr: Pointer to a six-byte array containing the Ethernet address - * - * Return true if the address is all zeroes. - */ -static inline int is_zero_ethaddr(const u8 *addr) -{ - return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]); -} - -/** - * is_multicast_ethaddr - Determine if the Ethernet address is a multicast. - * @addr: Pointer to a six-byte array containing the Ethernet address - * - * Return true if the address is a multicast address. - * By definition the broadcast address is also a multicast address. - */ -static inline int is_multicast_ethaddr(const u8 *addr) -{ - return 0x01 & addr[0]; -} - -/* - * is_broadcast_ethaddr - Determine if the Ethernet address is broadcast - * @addr: Pointer to a six-byte array containing the Ethernet address - * - * Return true if the address is the broadcast address. - */ -static inline int is_broadcast_ethaddr(const u8 *addr) -{ - return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == - 0xff; -} - -/* - * is_valid_ethaddr - Determine if the given Ethernet address is valid - * @addr: Pointer to a six-byte array containing the Ethernet address - * - * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not - * a multicast address, and is not FF:FF:FF:FF:FF:FF. - * - * Return true if the address is valid. - */ -static inline int is_valid_ethaddr(const u8 *addr) -{ - /* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to - * explicitly check for it here. */ - return !is_multicast_ethaddr(addr) && !is_zero_ethaddr(addr); -} - -/** - * net_random_ethaddr - Generate software assigned random Ethernet address - * @addr: Pointer to a six-byte array containing the Ethernet address - * - * Generate a random Ethernet address (MAC) that is not multicast - * and has the local assigned bit set. - */ -static inline void net_random_ethaddr(uchar *addr) -{ - int i; - unsigned int seed = get_ticks(); - - for (i = 0; i < 6; i++) - addr[i] = rand_r(&seed); - - addr[0] &= 0xfe; /* clear multicast bit */ - addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ -} - -/** - * string_to_enetaddr() - Parse a MAC address - * - * Convert a string MAC address - * - * Implemented in lib/net_utils.c (built unconditionally) - * - * @addr: MAC address in aa:bb:cc:dd:ee:ff format, where each part is a 2-digit - * hex value - * @enetaddr: Place to put MAC address (6 bytes) - */ -void string_to_enetaddr(const char *addr, uint8_t *enetaddr); - -/* Convert an IP address to a string */ -void ip_to_string(struct in_addr x, char *s); - -/** - * string_to_ip() - Convert a string to ip address - * - * Implemented in lib/net_utils.c (built unconditionally) - * - * @s: Input string to parse - * @return: in_addr struct containing the parsed IP address - */ -struct in_addr string_to_ip(const char *s); - -/* Convert a VLAN id to a string */ -void vlan_to_string(ushort x, char *s); - -/* Convert a string to a vlan id */ -ushort string_to_vlan(const char *s); - -/* read a VLAN id from an environment variable */ -ushort env_get_vlan(char *); - -/* copy a filename (allow for "..." notation, limit length) */ -void copy_filename(char *dst, const char *src, int size); - -/* check if serverip is specified in filename from the command line */ -int is_serverip_in_cmd(void); - -/** - * net_parse_bootfile - Parse the bootfile env var / cmd line param - * - * @param ipaddr - a pointer to the ipaddr to populate if included in bootfile - * @param filename - a pointer to the string to save the filename part - * @param max_len - The longest - 1 that the filename part can be - * - * return 1 if parsed, 0 if bootfile is empty - */ -int net_parse_bootfile(struct in_addr *ipaddr, char *filename, int max_len); - -/** - * update_tftp - Update firmware over TFTP (via DFU) - * - * This function updates board's firmware via TFTP - * - * @param addr - memory address where data is stored - * @param interface - the DFU medium name - e.g. "mmc" - * @param devstring - the DFU medium number - e.g. "1" - * - * Return: - 0 on success, other value on failure - */ -int update_tftp(ulong addr, char *interface, char *devstring); - -/** - * env_get_ip() - Convert an environment value to to an ip address - * - * @var: Environment variable to convert. The value of this variable must be - * in the format format a.b.c.d, where each value is a decimal number from - * 0 to 255 - * Return: IP address, or 0 if invalid - */ -static inline struct in_addr env_get_ip(char *var) -{ - return string_to_ip(env_get(var)); -} - -/** - * reset_phy() - Reset the Ethernet PHY - * - * This should be implemented by boards if CONFIG_RESET_PHY_R is enabled - */ -void reset_phy(void); - -#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); +#if defined(CONFIG_NET_LWIP) +#include #else -static inline void eth_set_enable_bootdevs(bool enable) {} +#include #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__ */