From 8e60fc8f85b27fb513ef0b83efa07c531ec8e9a7 Mon Sep 17 00:00:00 2001 From: Vladimir 'phcoder' Serbinenko Date: Sun, 26 Jun 2011 04:19:12 +0200 Subject: [PATCH] Send network packets on PXE --- grub-core/Makefile.core.def | 2 +- grub-core/net/drivers/i386/pc/pxe.c | 304 ++++++++++++++++++ grub-core/net/i386/pc/pxe.c | 482 ---------------------------- 3 files changed, 305 insertions(+), 483 deletions(-) create mode 100644 grub-core/net/drivers/i386/pc/pxe.c delete mode 100644 grub-core/net/i386/pc/pxe.c diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def index 927718359..5c3ce99be 100644 --- a/grub-core/Makefile.core.def +++ b/grub-core/Makefile.core.def @@ -1100,7 +1100,7 @@ module = { module = { name = pxe; - i386_pc = net/i386/pc/pxe.c; + i386_pc = net/drivers/i386/pc/pxe.c; enable = i386_pc; }; diff --git a/grub-core/net/drivers/i386/pc/pxe.c b/grub-core/net/drivers/i386/pc/pxe.c new file mode 100644 index 000000000..7d6e3adca --- /dev/null +++ b/grub-core/net/drivers/i386/pc/pxe.c @@ -0,0 +1,304 @@ +/* pxe.c - Driver to provide access to the pxe filesystem */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008,2009,2011 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see . + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +GRUB_MOD_LICENSE ("GPLv3+"); + +#define SEGMENT(x) ((x) >> 4) +#define OFFSET(x) ((x) & 0xF) +#define SEGOFS(x) ((SEGMENT(x) << 16) + OFFSET(x)) +#define LINEAR(x) (void *) ((((x) >> 16) << 4) + ((x) & 0xFFFF)) + +struct grub_pxe_undi_open +{ + grub_uint16_t status; + grub_uint16_t open_flag; + grub_uint16_t pkt_filter; + grub_uint16_t mcast_count; + grub_uint8_t mcast[8][6]; +} __attribute__ ((packed)); + +struct grub_pxe_undi_isr +{ + grub_uint16_t status; + grub_uint16_t func_flag; + grub_uint16_t buffer_len; + grub_uint16_t frame_len; + grub_uint16_t frame_hdr_len; + grub_uint32_t buffer; + grub_uint8_t prot_type; + grub_uint8_t pkt_type; +} __attribute__ ((packed)); + +enum + { + GRUB_PXE_ISR_IN_START = 1, + GRUB_PXE_ISR_IN_PROCESS, + GRUB_PXE_ISR_IN_GET_NEXT + }; + +enum + { + GRUB_PXE_ISR_OUT_OURS = 0, + GRUB_PXE_ISR_OUT_NOT_OURS = 1 + }; + +enum + { + GRUB_PXE_ISR_OUT_DONE = 0, + GRUB_PXE_ISR_OUT_TRANSMIT = 2, + GRUB_PXE_ISR_OUT_RECEIVE = 3, + GRUB_PXE_ISR_OUT_BUSY = 4, + }; + +struct grub_pxe_undi_transmit +{ + grub_uint16_t status; + grub_uint8_t protocol; + grub_uint8_t xmitflag; + grub_uint32_t dest; + grub_uint32_t tbd; + grub_uint32_t reserved[2]; +} __attribute__ ((packed)); + +struct grub_pxe_undi_tbd +{ + grub_uint16_t len; + grub_uint32_t buf; + grub_uint16_t blk_count; + struct + { + grub_uint8_t ptr_type; + grub_uint8_t reserved; + grub_uint16_t len; + grub_uint32_t ptr; + } blocks[8]; +} __attribute__ ((packed)); + +struct grub_pxe_bangpxe *grub_pxe_pxenv; +static grub_uint32_t pxe_rm_entry = 0; + +static struct grub_pxe_bangpxe * +grub_pxe_scan (void) +{ + struct grub_bios_int_registers regs; + struct grub_pxenv *pxenv; + struct grub_pxe_bangpxe *bangpxe; + + regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT; + + regs.ebx = 0; + regs.ecx = 0; + regs.eax = 0x5650; + regs.es = 0; + + grub_bios_interrupt (0x1a, ®s); + + if ((regs.eax & 0xffff) != 0x564e) + return NULL; + + pxenv = (struct grub_pxenv *) ((regs.es << 4) + (regs.ebx & 0xffff)); + if (grub_memcmp (pxenv->signature, GRUB_PXE_SIGNATURE, + sizeof (pxenv->signature)) + != 0) + return NULL; + + if (pxenv->version < 0x201) + return NULL; + + bangpxe = (void *) ((((pxenv->pxe_ptr & 0xffff0000) >> 16) << 4) + + (pxenv->pxe_ptr & 0xffff)); + + if (!bangpxe) + return NULL; + + if (grub_memcmp (bangpxe->signature, GRUB_PXE_BANGPXE_SIGNATURE, + sizeof (bangpxe->signature)) != 0) + return NULL; + + pxe_rm_entry = bangpxe->rm_entry; + + return bangpxe; +} + +static grub_ssize_t +grub_pxe_recv (const struct grub_net_card *dev __attribute__ ((unused)), + struct grub_net_buff *buf) +{ + struct grub_pxe_undi_isr *isr; + static int in_progress = 0; + char *ptr, *end; + int len; + + isr = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR; + + if (!in_progress) + { + grub_memset (isr, 0, sizeof (*isr)); + isr->func_flag = GRUB_PXE_ISR_IN_START; + grub_pxe_call (GRUB_PXENV_UNDI_ISR, isr, pxe_rm_entry); + if (isr->status || isr->func_flag != GRUB_PXE_ISR_OUT_OURS) + return -1; + grub_memset (isr, 0, sizeof (*isr)); + isr->func_flag = GRUB_PXE_ISR_IN_PROCESS; + grub_pxe_call (GRUB_PXENV_UNDI_ISR, isr, pxe_rm_entry); + } + else + { + grub_memset (isr, 0, sizeof (*isr)); + isr->func_flag = GRUB_PXE_ISR_IN_GET_NEXT; + grub_pxe_call (GRUB_PXENV_UNDI_ISR, isr, pxe_rm_entry); + } + + while (isr->func_flag != GRUB_PXE_ISR_OUT_RECEIVE) + { + if (isr->status || isr->func_flag == GRUB_PXE_ISR_OUT_DONE) + return -1; + grub_memset (isr, 0, sizeof (*isr)); + isr->func_flag = GRUB_PXE_ISR_IN_GET_NEXT; + grub_pxe_call (GRUB_PXENV_UNDI_ISR, isr, pxe_rm_entry); + } + + grub_netbuff_put (buf, isr->frame_len); + ptr = buf->data; + end = ptr + isr->frame_len; + len = isr->frame_len; + grub_memcpy (ptr, LINEAR (isr->buffer), isr->buffer_len); + ptr += isr->buffer_len; + while (ptr < end) + { + grub_memset (isr, 0, sizeof (*isr)); + isr->func_flag = GRUB_PXE_ISR_IN_GET_NEXT; + grub_pxe_call (GRUB_PXENV_UNDI_ISR, isr, pxe_rm_entry); + if (isr->status || isr->func_flag != GRUB_PXE_ISR_OUT_RECEIVE) + return -1; + + grub_memcpy (ptr, LINEAR (isr->buffer), isr->buffer_len); + ptr += isr->buffer_len; + } + + grub_printf ("<%d>\n", len); + return len; +} + +static grub_err_t +grub_pxe_send (const struct grub_net_card *dev __attribute__ ((unused)), + struct grub_net_buff *pack) +{ + struct grub_pxe_undi_transmit *trans; + struct grub_pxe_undi_tbd *tbd; + char *buf; + + trans = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR; + grub_memset (trans, 0, sizeof (*trans)); + tbd = (void *) (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + 128); + grub_memset (tbd, 0, sizeof (*tbd)); + buf = (void *) (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + 256); + grub_memcpy (buf, pack->data, pack->tail - pack->data); + + trans->tbd = SEGOFS ((grub_addr_t) tbd); + trans->protocol = 0; + tbd->len = pack->tail - pack->data; + tbd->buf = SEGOFS ((grub_addr_t) buf); + + grub_pxe_call (GRUB_PXENV_UNDI_TRANSMIT, trans, pxe_rm_entry); + if (trans->status) + return grub_error (GRUB_ERR_IO, "PXE send failed (status 0x%x)", + trans->status); + return 0; +} + +struct grub_net_card_driver grub_pxe_card_driver = +{ + .send = grub_pxe_send, + .recv = grub_pxe_recv +}; + +struct grub_net_card grub_pxe_card = +{ + .driver = &grub_pxe_card_driver, + .name = "pxe" +}; + +void +grub_pxe_unload (void) +{ + if (grub_pxe_pxenv) + { + grub_pxe_call (GRUB_PXENV_UNDI_CLOSE, + (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR, + pxe_rm_entry); + grub_net_card_unregister (&grub_pxe_card); + grub_pxe_pxenv = 0; + } +} + +GRUB_MOD_INIT(pxe) +{ + struct grub_pxe_bangpxe *pxenv; + struct grub_pxenv_get_cached_info ci; + struct grub_net_bootp_packet *bp; + struct grub_pxe_undi_open *ou; + + pxenv = grub_pxe_scan (); + if (! pxenv) + return; + + ci.packet_type = GRUB_PXENV_PACKET_TYPE_DHCP_ACK; + ci.buffer = 0; + ci.buffer_size = 0; + grub_pxe_call (GRUB_PXENV_GET_CACHED_INFO, &ci, pxe_rm_entry); + if (ci.status) + return; + + bp = LINEAR (ci.buffer); + + grub_memcpy (grub_pxe_card.default_address.mac, bp->mac_addr, + bp->hw_len < sizeof (grub_pxe_card.default_address.mac) + ? bp->hw_len : sizeof (grub_pxe_card.default_address.mac)); + grub_pxe_card.default_address.type = GRUB_NET_LINK_LEVEL_PROTOCOL_ETHERNET; + + ou = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR; + grub_memset (ou, 0, sizeof (ou)); + ou->pkt_filter = 4; + grub_pxe_call (GRUB_PXENV_UNDI_OPEN, ou, pxe_rm_entry); + + if (ou->status) + return; + + grub_net_card_register (&grub_pxe_card); + grub_net_configure_by_dhcp_ack ("pxe", &grub_pxe_card, 0, + bp, GRUB_PXE_BOOTP_SIZE); +} + +GRUB_MOD_FINI(pxe) +{ + grub_pxe_unload (); +} diff --git a/grub-core/net/i386/pc/pxe.c b/grub-core/net/i386/pc/pxe.c deleted file mode 100644 index 27c4af17f..000000000 --- a/grub-core/net/i386/pc/pxe.c +++ /dev/null @@ -1,482 +0,0 @@ -/* pxe.c - Driver to provide access to the pxe filesystem */ -/* - * GRUB -- GRand Unified Bootloader - * Copyright (C) 2008,2009 Free Software Foundation, Inc. - * - * GRUB is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * GRUB is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with GRUB. If not, see . - */ - -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#define SEGMENT(x) ((x) >> 4) -#define OFFSET(x) ((x) & 0xF) -#define SEGOFS(x) ((SEGMENT(x) << 16) + OFFSET(x)) -#define LINEAR(x) (void *) (((x >> 16) << 4) + (x & 0xFFFF)) - -struct grub_pxe_bangpxe *grub_pxe_pxenv; -static grub_uint32_t grub_pxe_default_server_ip; -#if 0 -static grub_uint32_t grub_pxe_default_gateway_ip; -#endif -static unsigned grub_pxe_blksize = GRUB_PXE_MIN_BLKSIZE; -static grub_uint32_t pxe_rm_entry = 0; -static grub_file_t curr_file = 0; - -struct grub_pxe_data -{ - grub_uint32_t packet_number; - grub_uint32_t block_size; - grub_uint32_t server_ip; - grub_uint32_t gateway_ip; - char filename[0]; -}; - - -static struct grub_pxe_bangpxe * -grub_pxe_scan (void) -{ - struct grub_bios_int_registers regs; - struct grub_pxenv *pxenv; - struct grub_pxe_bangpxe *bangpxe; - - regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT; - - regs.ebx = 0; - regs.ecx = 0; - regs.eax = 0x5650; - regs.es = 0; - - grub_bios_interrupt (0x1a, ®s); - - if ((regs.eax & 0xffff) != 0x564e) - return NULL; - - pxenv = (struct grub_pxenv *) ((regs.es << 4) + (regs.ebx & 0xffff)); - if (grub_memcmp (pxenv->signature, GRUB_PXE_SIGNATURE, - sizeof (pxenv->signature)) - != 0) - return NULL; - - if (pxenv->version < 0x201) - return NULL; - - bangpxe = (void *) ((((pxenv->pxe_ptr & 0xffff0000) >> 16) << 4) - + (pxenv->pxe_ptr & 0xffff)); - - if (!bangpxe) - return NULL; - - if (grub_memcmp (bangpxe->signature, GRUB_PXE_BANGPXE_SIGNATURE, - sizeof (bangpxe->signature)) != 0) - return NULL; - - pxe_rm_entry = bangpxe->rm_entry; - - return bangpxe; -} - -static grub_err_t -grub_pxefs_dir (grub_device_t device __attribute__ ((unused)), - const char *path __attribute__ ((unused)), - int (*hook) (const char *filename, - const struct grub_dirhook_info *info) - __attribute__ ((unused))) -{ - return GRUB_ERR_NONE; -} - -static grub_err_t -grub_pxefs_open (struct grub_file *file, const char *name) -{ - union - { - struct grub_pxenv_tftp_get_fsize c1; - struct grub_pxenv_tftp_open c2; - } c; - struct grub_pxe_data *data; - grub_file_t file_int, bufio; - - data = grub_zalloc (sizeof (*data) + grub_strlen (name) + 1); - if (!data) - return grub_errno; - - { - grub_net_network_level_address_t addr; - grub_net_network_level_address_t gateway; - struct grub_net_network_level_interface *interf; - grub_err_t err; - - if (grub_strncmp (file->device->net->name, - "pxe,", sizeof ("pxe,") - 1) == 0 - || grub_strncmp (file->device->net->name, - "pxe:", sizeof ("pxe:") - 1) == 0) - { - err = grub_net_resolve_address (file->device->net->name - + sizeof ("pxe,") - 1, &addr); - if (err) - { - grub_free (data); - return err; - } - } - else - { - addr.ipv4 = grub_pxe_default_server_ip; - addr.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4; - } - err = grub_net_route_address (addr, &gateway, &interf); - if (err) - { - grub_free (data); - return err; - } - data->server_ip = addr.ipv4; - data->gateway_ip = gateway.ipv4; - } - - if (curr_file != 0) - { - grub_pxe_call (GRUB_PXENV_TFTP_CLOSE, &c.c2, pxe_rm_entry); - curr_file = 0; - } - - c.c1.server_ip = data->server_ip; - c.c1.gateway_ip = data->gateway_ip; - grub_strcpy ((char *)&c.c1.filename[0], name); - grub_pxe_call (GRUB_PXENV_TFTP_GET_FSIZE, &c.c1, pxe_rm_entry); - if (c.c1.status) - { - grub_free (data); - return grub_error (GRUB_ERR_FILE_NOT_FOUND, "file not found"); - } - - file->size = c.c1.file_size; - - c.c2.tftp_port = grub_cpu_to_be16 (GRUB_PXE_TFTP_PORT); - c.c2.packet_size = grub_pxe_blksize; - grub_pxe_call (GRUB_PXENV_TFTP_OPEN, &c.c2, pxe_rm_entry); - if (c.c2.status) - { - grub_free (data); - return grub_error (GRUB_ERR_BAD_FS, "open fails"); - } - - data->block_size = c.c2.packet_size; - grub_strcpy (data->filename, name); - - file_int = grub_malloc (sizeof (*file_int)); - if (! file_int) - { - grub_free (data); - return grub_errno; - } - - file->data = data; - file->not_easily_seekable = 1; - grub_memcpy (file_int, file, sizeof (struct grub_file)); - curr_file = file_int; - - bufio = grub_bufio_open (file_int, data->block_size); - if (! bufio) - { - grub_free (file_int); - grub_free (data); - return grub_errno; - } - - grub_memcpy (file, bufio, sizeof (struct grub_file)); - - return GRUB_ERR_NONE; -} - -static grub_ssize_t -grub_pxefs_read (grub_file_t file, char *buf, grub_size_t len) -{ - struct grub_pxenv_tftp_read c; - struct grub_pxe_data *data; - grub_uint32_t pn; - grub_uint64_t r; - - data = file->data; - - pn = grub_divmod64 (file->offset, data->block_size, &r); - if (r) - { - grub_error (GRUB_ERR_BAD_FS, - "read access must be aligned to packet size"); - return -1; - } - - if ((curr_file != file) || (data->packet_number > pn)) - { - struct grub_pxenv_tftp_open o; - - if (curr_file != 0) - grub_pxe_call (GRUB_PXENV_TFTP_CLOSE, &o, pxe_rm_entry); - - o.server_ip = data->server_ip; - o.gateway_ip = data->gateway_ip; - grub_strcpy ((char *)&o.filename[0], data->filename); - o.tftp_port = grub_cpu_to_be16 (GRUB_PXE_TFTP_PORT); - o.packet_size = data->block_size; - grub_pxe_call (GRUB_PXENV_TFTP_OPEN, &o, pxe_rm_entry); - if (o.status) - { - grub_error (GRUB_ERR_BAD_FS, "open fails"); - return -1; - } - data->block_size = o.packet_size; - data->packet_number = 0; - curr_file = file; - } - - c.buffer = SEGOFS (GRUB_MEMORY_MACHINE_SCRATCH_ADDR); - while (pn >= data->packet_number) - { - c.buffer_size = data->block_size; - grub_pxe_call (GRUB_PXENV_TFTP_READ, &c, pxe_rm_entry); - if (c.status) - { - grub_error (GRUB_ERR_BAD_FS, "read fails"); - return -1; - } - data->packet_number++; - } - - grub_memcpy (buf, (char *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR, len); - - return len; -} - -static grub_err_t -grub_pxefs_close (grub_file_t file) -{ - struct grub_pxenv_tftp_close c; - - if (curr_file == file) - { - grub_pxe_call (GRUB_PXENV_TFTP_CLOSE, &c, pxe_rm_entry); - curr_file = 0; - } - - grub_free (file->data); - - return GRUB_ERR_NONE; -} - -static grub_err_t -grub_pxefs_label (grub_device_t device __attribute ((unused)), - char **label __attribute ((unused))) -{ - *label = 0; - return GRUB_ERR_NONE; -} - -static struct grub_fs grub_pxefs_fs = - { - .name = "pxe", - .dir = grub_pxefs_dir, - .open = grub_pxefs_open, - .read = grub_pxefs_read, - .close = grub_pxefs_close, - .label = grub_pxefs_label, - .next = 0 - }; - -static grub_ssize_t -grub_pxe_recv (struct grub_net_card *dev __attribute__ ((unused)), - struct grub_net_buff *buf __attribute__ ((unused))) -{ - return 0; -} - -static grub_err_t -grub_pxe_send (struct grub_net_card *dev __attribute__ ((unused)), - struct grub_net_buff *buf __attribute__ ((unused))) -{ - return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, "not implemented"); -} - -struct grub_net_card_driver grub_pxe_card_driver = -{ - .send = grub_pxe_send, - .recv = grub_pxe_recv -}; - -struct grub_net_card grub_pxe_card = -{ - .driver = &grub_pxe_card_driver, - .name = "pxe" -}; - -void -grub_pxe_unload (void) -{ - if (grub_pxe_pxenv) - { - grub_fs_unregister (&grub_pxefs_fs); - grub_net_card_unregister (&grub_pxe_card); - grub_pxe_pxenv = 0; - } -} - -static void -set_ip_env (char *varname, grub_uint32_t ip) -{ - char buf[GRUB_NET_MAX_STR_ADDR_LEN]; - grub_net_network_level_address_t addr; - addr.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4; - addr.ipv4 = ip; - - grub_net_addr_to_str (&addr, buf); - grub_env_set (varname, buf); -} - -static char * -write_ip_env (grub_uint32_t *ip, const char *val) -{ - char *buf; - grub_err_t err; - grub_net_network_level_address_t addr; - - err = grub_net_resolve_address (val, &addr); - if (err) - return 0; - if (addr.type != GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4) - return NULL; - - /* Normalize the IP. */ - buf = grub_malloc (GRUB_NET_MAX_STR_ADDR_LEN); - if (!buf) - return 0; - grub_net_addr_to_str (&addr, buf); - - *ip = addr.ipv4; - - return buf; -} - -static char * -grub_env_write_pxe_default_server (struct grub_env_var *var - __attribute__ ((unused)), - const char *val) -{ - return write_ip_env (&grub_pxe_default_server_ip, val); -} - -#if 0 -static char * -grub_env_write_pxe_default_gateway (struct grub_env_var *var - __attribute__ ((unused)), - const char *val) -{ - return write_ip_env (&grub_pxe_default_gateway_ip, val); -} -#endif - -static char * -grub_env_write_pxe_blocksize (struct grub_env_var *var __attribute__ ((unused)), - const char *val) -{ - unsigned size; - char *buf; - - size = grub_strtoul (val, 0, 0); - if (grub_errno) - return 0; - - if (size < GRUB_PXE_MIN_BLKSIZE) - size = GRUB_PXE_MIN_BLKSIZE; - else if (size > GRUB_PXE_MAX_BLKSIZE) - size = GRUB_PXE_MAX_BLKSIZE; - - buf = grub_xasprintf ("%d", size); - if (!buf) - return 0; - - grub_pxe_blksize = size; - - return buf; -} - -GRUB_MOD_INIT(pxe) -{ - struct grub_pxe_bangpxe *pxenv; - struct grub_pxenv_get_cached_info ci; - struct grub_net_bootp_ack *bp; - char *buf; - - pxenv = grub_pxe_scan (); - if (! pxenv) - return; - - ci.packet_type = GRUB_PXENV_PACKET_TYPE_DHCP_ACK; - ci.buffer = 0; - ci.buffer_size = 0; - grub_pxe_call (GRUB_PXENV_GET_CACHED_INFO, &ci, pxe_rm_entry); - if (ci.status) - return; - - bp = LINEAR (ci.buffer); - - grub_pxe_default_server_ip = bp->server_ip; - grub_pxe_pxenv = pxenv; - - set_ip_env ("pxe_default_server", grub_pxe_default_server_ip); - grub_register_variable_hook ("pxe_default_server", 0, - grub_env_write_pxe_default_server); - -#if 0 - grub_pxe_default_gateway_ip = bp->gateway_ip; - - grub_register_variable_hook ("pxe_default_gateway", 0, - grub_env_write_pxe_default_gateway); -#endif - - buf = grub_xasprintf ("%d", grub_pxe_blksize); - if (buf) - grub_env_set ("pxe_blksize", buf); - grub_free (buf); - - grub_register_variable_hook ("pxe_blksize", 0, - grub_env_write_pxe_blocksize); - - grub_memcpy (grub_pxe_card.default_address.mac, bp->mac_addr, - bp->hw_len < sizeof (grub_pxe_card.default_address.mac) - ? bp->hw_len : sizeof (grub_pxe_card.default_address.mac)); - grub_pxe_card.default_address.type = GRUB_NET_LINK_LEVEL_PROTOCOL_ETHERNET; - - grub_fs_register (&grub_pxefs_fs); - grub_net_card_register (&grub_pxe_card); - grub_net_configure_by_dhcp_ack ("pxe", &grub_pxe_card, - GRUB_NET_INTERFACE_PERMANENT - | GRUB_NET_INTERFACE_ADDRESS_IMMUTABLE - | GRUB_NET_INTERFACE_HWADDRESS_IMMUTABLE, - bp, GRUB_PXE_BOOTP_SIZE); -} - -GRUB_MOD_FINI(pxe) -{ - grub_pxe_unload (); -}