efi_pxe.c File Reference

EFI PXE base code protocol. More...

#include <string.h>
#include <errno.h>
#include <ipxe/refcnt.h>
#include <ipxe/list.h>
#include <ipxe/netdevice.h>
#include <ipxe/fakedhcp.h>
#include <ipxe/process.h>
#include <ipxe/uri.h>
#include <ipxe/in.h>
#include <ipxe/socket.h>
#include <ipxe/tcpip.h>
#include <ipxe/xferbuf.h>
#include <ipxe/open.h>
#include <ipxe/dhcppkt.h>
#include <ipxe/udp.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/efi_snp.h>
#include <ipxe/efi/efi_pxe.h>
#include <ipxe/efi/efi_null.h>
#include <ipxe/efi/Protocol/PxeBaseCode.h>
#include <ipxe/efi/Protocol/AppleNetBoot.h>
#include <usr/ifmgmt.h>
#include <config/general.h>

Go to the source code of this file.

Data Structures
struct	efi_pxe
	A PXE base code. More...
struct	sockaddr_efi
	An EFI socket address. More...
struct	efi_pxe_udp_pseudo_header
	EFI UDP pseudo-header. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
static void	efi_pxe_free (struct refcnt *refcnt)
	Free PXE base code. More...
static	LIST_HEAD (efi_pxes)
	List of PXE base codes. More...
static struct efi_pxe *	efi_pxe_find (EFI_HANDLE handle)
	Locate PXE base code. More...
static void	efi_pxe_ip_sockaddr (struct efi_pxe *pxe, EFI_IP_ADDRESS *ip, struct sockaddr *sa)
	Populate socket address from EFI IP address. More...
static const char *	efi_pxe_ip_ntoa (struct efi_pxe *pxe, EFI_IP_ADDRESS *ip)
	Transcribe EFI IP address (for debugging) More...
static int	efi_pxe_ip (struct efi_pxe *pxe)
	Populate local IP address. More...
static int	efi_pxe_ip_filter (struct efi_pxe *pxe, EFI_IP_ADDRESS *ip)
	Check if IP address matches filter. More...
static void	efi_pxe_tftp_close (struct efi_pxe *pxe, int rc)
	Close PXE (M)TFTP download interface. More...
static size_t	efi_pxe_tftp_window (struct efi_pxe *pxe)
	Check PXE (M)TFTP download flow control window. More...
static int	efi_pxe_tftp_deliver (struct efi_pxe *pxe, struct io_buffer *iobuf, struct xfer_metadata *meta)
	Receive new PXE (M)TFTP download data. More...
static int	efi_pxe_tftp_open (struct efi_pxe *pxe, EFI_IP_ADDRESS *ip, const char *filename)
	Open (M)TFTP download interface. More...
static void	efi_pxe_udp_close (struct efi_pxe *pxe, int rc)
	Close UDP interface. More...
static int	efi_pxe_udp_deliver (struct efi_pxe *pxe, struct io_buffer *iobuf, struct xfer_metadata *meta)
	Receive UDP packet. More...
static int	efi_pxe_udp_open (struct efi_pxe *pxe)
	Open UDP interface. More...
static void	efi_pxe_udp_schedule_close (struct efi_pxe *pxe)
	Schedule close of UDP interface. More...
static void	efi_pxe_udp_scheduled_close (struct efi_pxe *pxe)
	Scheduled close of UDP interface. More...
static const char *	efi_pxe_fake_name (struct efi_pxe *pxe, EFI_PXE_BASE_CODE_PACKET *packet)
	Name fake DHCP packet. More...
static BOOLEAN	efi_pxe_fake (struct efi_pxe *pxe, int(*fake)(struct net_device *netdev, void *data, size_t len), EFI_PXE_BASE_CODE_PACKET *packet)
	Construct fake DHCP packet and flag. More...
static void	efi_pxe_fake_all (struct efi_pxe *pxe)
	Construct fake DHCP packets. More...
static EFI_STATUS EFIAPI	efi_pxe_start (EFI_PXE_BASE_CODE_PROTOCOL *base, BOOLEAN use_ipv6)
	Start PXE base code. More...
static EFI_STATUS EFIAPI	efi_pxe_stop (EFI_PXE_BASE_CODE_PROTOCOL *base)
	Stop PXE base code. More...
static EFI_STATUS EFIAPI	efi_pxe_dhcp (EFI_PXE_BASE_CODE_PROTOCOL *base, BOOLEAN sort)
	Perform DHCP. More...
static EFI_STATUS EFIAPI	efi_pxe_discover (EFI_PXE_BASE_CODE_PROTOCOL *base, UINT16 type, UINT16 *layer, BOOLEAN bis, EFI_PXE_BASE_CODE_DISCOVER_INFO *info)
	Perform boot server discovery. More...
static EFI_STATUS EFIAPI	efi_pxe_mtftp (EFI_PXE_BASE_CODE_PROTOCOL *base, EFI_PXE_BASE_CODE_TFTP_OPCODE opcode, VOID *data, BOOLEAN overwrite, UINT64 *len, UINTN *blksize, EFI_IP_ADDRESS *ip, UINT8 *filename, EFI_PXE_BASE_CODE_MTFTP_INFO *info, BOOLEAN callback)
	Perform (M)TFTP. More...
static EFI_STATUS EFIAPI	efi_pxe_udp_write (EFI_PXE_BASE_CODE_PROTOCOL *base, UINT16 flags, EFI_IP_ADDRESS *dest_ip, EFI_PXE_BASE_CODE_UDP_PORT *dest_port, EFI_IP_ADDRESS *gateway, EFI_IP_ADDRESS *src_ip, EFI_PXE_BASE_CODE_UDP_PORT *src_port, UINTN *hdr_len, VOID *hdr, UINTN *len, VOID *data)
	Transmit UDP packet. More...
static EFI_STATUS EFIAPI	efi_pxe_udp_read (EFI_PXE_BASE_CODE_PROTOCOL *base, UINT16 flags, EFI_IP_ADDRESS *dest_ip, EFI_PXE_BASE_CODE_UDP_PORT *dest_port, EFI_IP_ADDRESS *src_ip, EFI_PXE_BASE_CODE_UDP_PORT *src_port, UINTN *hdr_len, VOID *hdr, UINTN *len, VOID *data)
	Receive UDP packet. More...
static EFI_STATUS EFIAPI	efi_pxe_set_ip_filter (EFI_PXE_BASE_CODE_PROTOCOL *base, EFI_PXE_BASE_CODE_IP_FILTER *filter)
	Set receive filter. More...
static EFI_STATUS EFIAPI	efi_pxe_arp (EFI_PXE_BASE_CODE_PROTOCOL *base, EFI_IP_ADDRESS *ip, EFI_MAC_ADDRESS *mac)
	Resolve MAC address. More...
static EFI_STATUS EFIAPI	efi_pxe_set_parameters (EFI_PXE_BASE_CODE_PROTOCOL *base, BOOLEAN *autoarp, BOOLEAN *sendguid, UINT8 *ttl, UINT8 *tos, BOOLEAN *callback)
	Set parameters. More...
static EFI_STATUS EFIAPI	efi_pxe_set_station_ip (EFI_PXE_BASE_CODE_PROTOCOL *base, EFI_IP_ADDRESS *ip, EFI_IP_ADDRESS *netmask)
	Set IP address. More...
static EFI_STATUS EFIAPI	efi_pxe_set_packets (EFI_PXE_BASE_CODE_PROTOCOL *base, BOOLEAN *dhcpdisc_ok, BOOLEAN *dhcpack_ok, BOOLEAN *proxyoffer_ok, BOOLEAN *pxebsdisc_ok, BOOLEAN *pxebsack_ok, BOOLEAN *pxebsbis_ok, EFI_PXE_BASE_CODE_PACKET *dhcpdisc, EFI_PXE_BASE_CODE_PACKET *dhcpack, EFI_PXE_BASE_CODE_PACKET *proxyoffer, EFI_PXE_BASE_CODE_PACKET *pxebsdisc, EFI_PXE_BASE_CODE_PACKET *pxebsack, EFI_PXE_BASE_CODE_PACKET *pxebsbis)
	Update cached DHCP packets. More...
static EFI_STATUS EFIAPI	efi_apple_get_response (EFI_PXE_BASE_CODE_PACKET *packet, UINTN *len, VOID *data)
	Get DHCP/BSDP response. More...
static EFI_STATUS EFIAPI	efi_apple_get_dhcp_response (EFI_APPLE_NET_BOOT_PROTOCOL *apple, UINTN *len, VOID *data)
	Get DHCP response. More...
static EFI_STATUS EFIAPI	efi_apple_get_bsdp_response (EFI_APPLE_NET_BOOT_PROTOCOL *apple, UINTN *len, VOID *data)
	Get BSDP response. More...
int	efi_pxe_install (EFI_HANDLE handle, struct net_device *netdev)
	Install PXE base code protocol. More...
void	efi_pxe_uninstall (EFI_HANDLE handle)
	Uninstall PXE base code protocol. More...

Variables
static struct interface_operation	efi_pxe_tftp_operations []
	PXE file data transfer interface operations. More...
static struct interface_descriptor	efi_pxe_tftp_desc
	PXE file data transfer interface descriptor. More...
static struct interface_operation	efi_pxe_udp_operations []
	PXE UDP interface operations. More...
static struct interface_descriptor	efi_pxe_udp_desc
	PXE UDP interface descriptor. More...
static struct process_descriptor	efi_pxe_process_desc
	UDP close process descriptor. More...
static EFI_PXE_BASE_CODE_PROTOCOL	efi_pxe_base_code_protocol
	PXE base code protocol. More...
static EFI_APPLE_NET_BOOT_PROTOCOL	efi_apple_net_boot_protocol
	Apple NetBoot protocol. More...

Detailed Description

EFI PXE base code protocol.

Definition in file efi_pxe.c.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

efi_pxe_free()

static void efi_pxe_free ( struct refcnt *  refcnt )

static

Free PXE base code.

Parameters

refcnt

Reference count

Definition at line 116 of file efi_pxe.c.

                                                   {
        struct efi_pxe *pxe = container_of ( refcnt, struct efi_pxe, refcnt );

        netdev_put ( pxe->netdev );
        free ( pxe );
}

References container_of, free, efi_pxe::netdev, and netdev_put().

Referenced by efi_pxe_install().

LIST_HEAD()

static LIST_HEAD ( efi_pxes  )

static

List of PXE base codes.

efi_pxe_find()

static struct efi_pxe* efi_pxe_find ( EFI_HANDLE  handle )

static

Locate PXE base code.

Parameters

handle

EFI handle

Return values

pxe	PXE base code, or NULL

Definition at line 132 of file efi_pxe.c.

                                                           {
        struct efi_pxe *pxe;

        /* Locate base code */
        list_for_each_entry ( pxe, &efi_pxes, list ) {
                if ( pxe->handle == handle )
                        return pxe;
        }

        return NULL;
}

References handle, efi_pxe::handle, efi_pxe::list, list_for_each_entry, and NULL.

Referenced by efi_pxe_uninstall().

efi_pxe_ip_sockaddr()

static void efi_pxe_ip_sockaddr ( struct efi_pxe *  pxe, EFI_IP_ADDRESS *  ip, struct sockaddr *  sa  )

static

Populate socket address from EFI IP address.

Parameters

pxe	PXE base code
ip	EFI IP address
sa	Socket address to fill in

Definition at line 191 of file efi_pxe.c.

                                                        {
        union {
                struct sockaddr sa;
                struct sockaddr_efi se;
        } *sockaddr = container_of ( sa, typeof ( *sockaddr ), sa );

        /* Initialise socket address */
        memset ( sockaddr, 0, sizeof ( *sockaddr ) );
        sockaddr->sa.sa_family = pxe->tcpip->sa_family;
        memcpy ( &sockaddr->se.se_addr, ip, pxe->net->net_addr_len );
        sockaddr->se.se_scope_id = pxe->netdev->scope_id;
}

References container_of, ip, memcpy(), memset(), efi_pxe::net, net_protocol::net_addr_len, efi_pxe::netdev, sa, sockaddr::sa_family, tcpip_net_protocol::sa_family, net_device::scope_id, efi_pxe::tcpip, and typeof().

Referenced by efi_pxe_tftp_open(), and efi_pxe_udp_write().

efi_pxe_ip_ntoa()

static const char* efi_pxe_ip_ntoa ( struct efi_pxe *  pxe, EFI_IP_ADDRESS *  ip  )

static

Transcribe EFI IP address (for debugging)

Parameters

pxe	PXE base code
ip	EFI IP address

Return values

text	Transcribed IP address

Definition at line 212 of file efi_pxe.c.

                                                           {

        return pxe->net->ntoa ( ip );
}

References ip, efi_pxe::net, and net_protocol::ntoa.

Referenced by efi_pxe_arp(), efi_pxe_discover(), efi_pxe_mtftp(), efi_pxe_set_ip_filter(), efi_pxe_set_station_ip(), efi_pxe_tftp_open(), efi_pxe_udp_read(), and efi_pxe_udp_write().

efi_pxe_ip()

static int efi_pxe_ip ( struct efi_pxe *  pxe )

static

Populate local IP address.

Parameters

pxe	PXE base code

Return values

rc	Return status code

Definition at line 224 of file efi_pxe.c.

                                              {
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;
        struct in_addr address;
        struct in_addr netmask;

        /* It's unclear which of the potentially many IPv6 addresses
         * is supposed to be used.
         */
        if ( mode->UsingIpv6 )
                return -ENOTSUP;

        /* Fetch IP address and subnet mask */
        fetch_ipv4_setting ( netdev_settings ( pxe->netdev ), &ip_setting,
                             &address );
        fetch_ipv4_setting ( netdev_settings ( pxe->netdev ), &netmask_setting,
                             &netmask );

        /* Populate IP address and subnet mask */
        memset ( &mode->StationIp, 0, sizeof ( mode->StationIp ) );
        memcpy ( &mode->StationIp, &address, sizeof ( address ) );
        memset ( &mode->SubnetMask, 0, sizeof ( mode->SubnetMask ) );
        memcpy ( &mode->SubnetMask, &netmask, sizeof ( netmask ) );

        return 0;
}

References address, ENOTSUP, fetch_ipv4_setting(), memcpy(), memset(), mode, efi_pxe::mode, efi_pxe::netdev, and netdev_settings().

Referenced by efi_pxe_dhcp(), and efi_pxe_start().

efi_pxe_ip_filter()

static int efi_pxe_ip_filter ( struct efi_pxe *  pxe, EFI_IP_ADDRESS *  ip  )

static

Check if IP address matches filter.

Parameters

pxe	PXE base code
ip	EFI IP address

Return values

is_match

IP address matches filter

Definition at line 257 of file efi_pxe.c.

                                                                         {
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;
        EFI_PXE_BASE_CODE_IP_FILTER *filter = &mode->IpFilter;
        uint8_t filters = filter->Filters;
        union {
                EFI_IP_ADDRESS ip;
                struct in_addr in;
                struct in6_addr in6;
        } *u = container_of ( ip, typeof ( *u ), ip );
        size_t addr_len = pxe->net->net_addr_len;
        unsigned int i;

        /* Match everything, if applicable */
        if ( filters & EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS )
                return 1;

        /* Match all multicasts, if applicable */
        if ( filters & EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS_MULTICAST ) {
                if ( mode->UsingIpv6 ) {
                        if ( IN6_IS_ADDR_MULTICAST ( &u->in6 ) )
                                return 1;
                } else {
                        if ( IN_IS_MULTICAST ( u->in.s_addr ) )
                                return 1;
                }
        }

        /* Match IPv4 broadcasts, if applicable */
        if ( filters & EFI_PXE_BASE_CODE_IP_FILTER_BROADCAST ) {
                if ( ( ! mode->UsingIpv6 ) &&
                     ( u->in.s_addr == INADDR_BROADCAST ) )
                        return 1;
        }

        /* Match station address, if applicable */
        if ( filters & EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP ) {
                if ( memcmp ( ip, &mode->StationIp, addr_len ) == 0 )
                        return 1;
        }

        /* Match explicit addresses, if applicable */
        for ( i = 0 ; i < filter->IpCnt ; i++ ) {
                if ( memcmp ( ip, &filter->IpList[i], addr_len ) == 0 )
                        return 1;
        }

        return 0;
}

References container_of, EFI_PXE_BASE_CODE_IP_FILTER_BROADCAST, EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS, EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS_MULTICAST, EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP, filter, in, IN6_IS_ADDR_MULTICAST, IN_IS_MULTICAST, INADDR_BROADCAST, ip, memcmp(), mode, efi_pxe::mode, efi_pxe::net, net_protocol::net_addr_len, typeof(), and u.

Referenced by efi_pxe_udp_read().

efi_pxe_tftp_close()

static void efi_pxe_tftp_close ( struct efi_pxe *  pxe, int  rc  )

static

Close PXE (M)TFTP download interface.

Parameters

pxe	PXE base code
rc	Reason for close

Definition at line 319 of file efi_pxe.c.

                                                               {

        /* Restart interface */
        intf_restart ( &pxe->tftp, rc );

        /* Record overall status */
        pxe->rc = rc;
}

References intf_restart(), efi_pxe::rc, rc, and efi_pxe::tftp.

Referenced by efi_pxe_mtftp(), efi_pxe_stop(), and efi_pxe_tftp_deliver().

efi_pxe_tftp_window()

static size_t efi_pxe_tftp_window ( struct efi_pxe *  pxe )

static

Check PXE (M)TFTP download flow control window.

Parameters

pxe	PXE base code

Return values

len	Length of window

Definition at line 334 of file efi_pxe.c.

                                                          {

        /* Return requested blocksize */
        return pxe->blksize;
}

References efi_pxe::blksize.

efi_pxe_tftp_deliver()

static int efi_pxe_tftp_deliver ( struct efi_pxe *  pxe, struct io_buffer *  iobuf, struct xfer_metadata *  meta  )

static

Receive new PXE (M)TFTP download data.

Parameters

pxe	PXE base code
iobuf	I/O buffer
meta	Transfer metadata

Return values

rc	Return status code

Definition at line 348 of file efi_pxe.c.

                                                               {
        int rc;

        /* Deliver to data transfer buffer */
        if ( ( rc = xferbuf_deliver ( &pxe->buf, iob_disown ( iobuf ),
                                      meta ) ) != 0 )
                goto err_deliver;

        return 0;

 err_deliver:
        efi_pxe_tftp_close ( pxe, rc );
        return rc;
}

References efi_pxe::buf, efi_pxe_tftp_close(), iob_disown, meta, rc, and xferbuf_deliver().

efi_pxe_tftp_open()

static int efi_pxe_tftp_open ( struct efi_pxe *  pxe, EFI_IP_ADDRESS *  ip, const char *  filename  )

static

Open (M)TFTP download interface.

Parameters

pxe	PXE base code
ip	EFI IP address
filename	Filename

Return values

rc	Return status code

Definition at line 384 of file efi_pxe.c.

                                                      {
        struct sockaddr server;
        struct uri *uri;
        int rc;

        /* Parse server address and filename */
        efi_pxe_ip_sockaddr ( pxe, ip, &server );
        uri = pxe_uri ( &server, filename );
        if ( ! uri ) {
                DBGC ( pxe, "PXE %s could not parse %s:%s\n", pxe->name,
                       efi_pxe_ip_ntoa ( pxe, ip ), filename );
                rc = -ENOTSUP;
                goto err_parse;
        }

        /* Open URI */
        if ( ( rc = xfer_open_uri ( &pxe->tftp, uri ) ) != 0 ) {
                DBGC ( pxe, "PXE %s could not open: %s\n",
                       pxe->name, strerror ( rc ) );
                goto err_open;
        }

 err_open:
        uri_put ( uri );
 err_parse:
        return rc;
}

References DBGC, efi_pxe_ip_ntoa(), efi_pxe_ip_sockaddr(), ENOTSUP, ip, efi_pxe::name, pxe_uri(), rc, strerror(), efi_pxe::tftp, uri_put(), and xfer_open_uri().

Referenced by efi_pxe_mtftp().

efi_pxe_udp_close()

static void efi_pxe_udp_close ( struct efi_pxe *  pxe, int  rc  )

static

Close UDP interface.

Parameters

pxe	PXE base code
rc	Reason for close

Definition at line 436 of file efi_pxe.c.

                                                              {
        struct io_buffer *iobuf;
        struct io_buffer *tmp;

        /* Release our claim on SNP devices, if applicable */
        if ( process_running ( &pxe->process ) )
                efi_snp_release();

        /* Stop process */
        process_del ( &pxe->process );

        /* Restart UDP interface */
        intf_restart ( &pxe->udp, rc );

        /* Flush any received UDP packets */
        list_for_each_entry_safe ( iobuf, tmp, &pxe->queue, list ) {
                list_del ( &iobuf->list );
                free_iob ( iobuf );
        }
}

References efi_snp_release(), free_iob(), intf_restart(), io_buffer::list, list_del, list_for_each_entry_safe, efi_pxe::process, process_del(), process_running(), efi_pxe::queue, rc, tmp, and efi_pxe::udp.

Referenced by efi_pxe_stop(), and efi_pxe_udp_scheduled_close().

efi_pxe_udp_deliver()

static int efi_pxe_udp_deliver ( struct efi_pxe *  pxe, struct io_buffer *  iobuf, struct xfer_metadata *  meta  )

static

Receive UDP packet.

Parameters

pxe	PXE base code
iobuf	I/O buffer
meta	Data transfer metadata

Return values

rc	Return status code

Definition at line 465 of file efi_pxe.c.

                                                              {
        struct sockaddr_efi *se_src;
        struct sockaddr_efi *se_dest;
        struct tcpip_net_protocol *tcpip;
        struct net_protocol *net;
        struct efi_pxe_udp_pseudo_header *pshdr;
        size_t addr_len;
        size_t pshdr_len;
        int rc;

        /* Sanity checks */
        assert ( meta != NULL );
        se_src = ( ( struct sockaddr_efi * ) meta->src );
        assert ( se_src != NULL );
        se_dest = ( ( struct sockaddr_efi * ) meta->dest );
        assert ( se_dest != NULL );
        assert ( se_src->se_family == se_dest->se_family );

        /* Determine protocol */
        tcpip = tcpip_net_protocol ( se_src->se_family );
        if ( ! tcpip ) {
                rc = -ENOTSUP;
                goto err_unsupported;
        }
        net = tcpip->net_protocol;
        addr_len = net->net_addr_len;

        /* Construct pseudo-header */
        pshdr_len = ( sizeof ( *pshdr ) + ( 2 * addr_len ) );
        if ( ( rc = iob_ensure_headroom ( iobuf, pshdr_len ) ) != 0 )
                goto err_headroom;
        memcpy ( iob_push ( iobuf, addr_len ), &se_src->se_addr, addr_len );
        memcpy ( iob_push ( iobuf, addr_len ), &se_dest->se_addr, addr_len );
        pshdr = iob_push ( iobuf, sizeof ( *pshdr ) );
        pshdr->net = net;
        pshdr->dest_port = ntohs ( se_dest->se_port );
        pshdr->src_port = ntohs ( se_src->se_port );

        /* Add to queue */
        list_add_tail ( &iobuf->list, &pxe->queue );

        return 0;

 err_unsupported:
 err_headroom:
        free_iob ( iobuf );
        return rc;
}

References assert(), efi_pxe_udp_pseudo_header::dest_port, ENOTSUP, free_iob(), iob_ensure_headroom(), iob_push, io_buffer::list, list_add_tail, memcpy(), meta, efi_pxe_udp_pseudo_header::net, net_protocol::net_addr_len, tcpip_net_protocol::net_protocol, ntohs, NULL, efi_pxe::queue, rc, sockaddr_efi::se_addr, sockaddr_efi::se_family, sockaddr_efi::se_port, efi_pxe_udp_pseudo_header::src_port, and tcpip_net_protocol().

efi_pxe_udp_open()

static int efi_pxe_udp_open ( struct efi_pxe *  pxe )

static

Open UDP interface.

Parameters

pxe	PXE base code

Return values

rc	Return status code

Definition at line 531 of file efi_pxe.c.

                                                    {
        int rc;

        /* If interface is already open, then cancel the scheduled close */
        if ( process_running ( &pxe->process ) ) {
                process_del ( &pxe->process );
                return 0;
        }

        /* Open promiscuous UDP interface */
        if ( ( rc = udp_open_promisc ( &pxe->udp ) ) != 0 ) {
                DBGC ( pxe, "PXE %s could not open UDP connection: %s\n",
                       pxe->name, strerror ( rc ) );
                return rc;
        }

        /* Claim network devices */
        efi_snp_claim();

        return 0;
}

References DBGC, efi_snp_claim(), efi_pxe::name, efi_pxe::process, process_del(), process_running(), rc, strerror(), efi_pxe::udp, and udp_open_promisc().

Referenced by efi_pxe_udp_read(), and efi_pxe_udp_write().

efi_pxe_udp_schedule_close()

static void efi_pxe_udp_schedule_close ( struct efi_pxe *  pxe )

static

Schedule close of UDP interface.

Parameters

pxe	PXE base code

Definition at line 558 of file efi_pxe.c.

                                                               {

        /* The EFI PXE base code protocol does not provide any
         * explicit UDP open/close methods.  To avoid the overhead of
         * reopening a socket for each read/write operation, we start
         * a process which will close the socket immediately if the
         * next call into iPXE is anything other than a UDP
         * read/write.
         */
        process_add ( &pxe->process );
}

References efi_pxe::process, and process_add().

Referenced by efi_pxe_udp_read(), and efi_pxe_udp_write().

efi_pxe_udp_scheduled_close()

static void efi_pxe_udp_scheduled_close ( struct efi_pxe *  pxe )

static

Scheduled close of UDP interface.

Parameters

pxe	PXE base code

Definition at line 575 of file efi_pxe.c.

                                                                {

        /* Close UDP interface */
        efi_pxe_udp_close ( pxe, 0 );
}

References efi_pxe_udp_close().

efi_pxe_fake_name()

static const char* efi_pxe_fake_name ( struct efi_pxe *  pxe, EFI_PXE_BASE_CODE_PACKET *  packet  )

static

Name fake DHCP packet.

Parameters

pxe	PXE base code
packet	Packet

Return values

name	Name of packet

Definition at line 599 of file efi_pxe.c.

                                                                           {
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;

        if ( packet == &mode->DhcpDiscover ) {
                return "DhcpDiscover";
        } else if ( packet == &mode->DhcpAck ) {
                return "DhcpAck";
        } else if ( packet == &mode->ProxyOffer ) {
                return "ProxyOffer";
        } else if ( packet == &mode->PxeDiscover ) {
                return "PxeDiscover";
        } else if ( packet == &mode->PxeReply ) {
                return "PxeReply";
        } else if ( packet == &mode->PxeBisReply ) {
                return "PxeBisReply";
        } else {
                return "<UNKNOWN>";
        }
}

References mode, and efi_pxe::mode.

Referenced by efi_pxe_fake().

efi_pxe_fake()

static BOOLEAN efi_pxe_fake ( struct efi_pxe *  pxe, int(*)(struct net_device *netdev, void *data, size_t len)  fake, EFI_PXE_BASE_CODE_PACKET *  packet  )

static

Construct fake DHCP packet and flag.

Parameters

pxe	PXE base code
fake	Fake packet constructor
packet	Packet to fill in

Return values

exists

Packet existence flag

Definition at line 628 of file efi_pxe.c.

                                                                 {
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;
        struct dhcp_packet dhcppkt;
        struct dhcphdr *dhcphdr;
        unsigned int len;
        int rc;

        /* The fake packet constructors do not support IPv6 */
        if ( mode->UsingIpv6 )
                return FALSE;

        /* Attempt to construct packet */
        if ( ( rc = fake ( pxe->netdev, packet, sizeof ( *packet ) ) != 0 ) ) {
                DBGC ( pxe, "PXE %s could not fake %s: %s\n", pxe->name,
                       efi_pxe_fake_name ( pxe, packet ), strerror ( rc ) );
                return FALSE;
        }

        /* The WDS bootstrap wdsmgfw.efi has a buggy DHCPv4 packet
         * parser which does not correctly handle DHCP padding bytes.
         * Specifically, if a padding byte (i.e. a zero) is
         * encountered, the parse will first increment the pointer by
         * one to skip over the padding byte but will then drop into
         * the code path for handling normal options, which increments
         * the pointer by two to skip over the (already-skipped) type
         * field and the (non-existent) length field.
         *
         * The upshot of this bug in WDS is that the parser will fail
         * with an error 0xc0000023 if the number of spare bytes after
         * the end of the options is not an exact multiple of three.
         *
         * Work around this buggy parser by adding an explicit
         * DHCP_END tag.
         */
        dhcphdr = container_of ( &packet->Dhcpv4.BootpOpcode,
                                 struct dhcphdr, op );
        dhcppkt_init ( &dhcppkt, dhcphdr, sizeof ( *packet ) );
        len = dhcppkt_len ( &dhcppkt );
        if ( len < sizeof ( *packet ) )
                packet->Raw[len] = DHCP_END;

        return TRUE;
}

References EFI_PXE_BASE_CODE_DHCPV4_PACKET::BootpOpcode, container_of, DBGC, DHCP_END, dhcppkt_init(), dhcppkt_len(), EFI_PXE_BASE_CODE_PACKET::Dhcpv4, efi_pxe_fake_name(), FALSE, len, mode, efi_pxe::mode, efi_pxe::name, efi_pxe::netdev, op, EFI_PXE_BASE_CODE_PACKET::Raw, rc, strerror(), and TRUE.

Referenced by efi_pxe_fake_all().

efi_pxe_fake_all()

static void efi_pxe_fake_all ( struct efi_pxe *  pxe )

static

Construct fake DHCP packets.

Parameters

pxe	PXE base code

Definition at line 680 of file efi_pxe.c.

                                                     {
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;

        /* Construct fake packets */
        mode->DhcpDiscoverValid =
                efi_pxe_fake ( pxe, create_fakedhcpdiscover,
                               &mode->DhcpDiscover );
        mode->DhcpAckReceived =
                efi_pxe_fake ( pxe, create_fakedhcpack,
                               &mode->DhcpAck );
        mode->PxeReplyReceived =
                efi_pxe_fake ( pxe, create_fakepxebsack,
                               &mode->PxeReply );
}

References create_fakedhcpack(), create_fakedhcpdiscover(), create_fakepxebsack(), efi_pxe_fake(), mode, and efi_pxe::mode.

Referenced by efi_pxe_dhcp(), and efi_pxe_start().

efi_pxe_start()

static EFI_STATUS EFIAPI efi_pxe_start ( EFI_PXE_BASE_CODE_PROTOCOL *  base, BOOLEAN  use_ipv6  )

static

Start PXE base code.

Parameters

base	PXE base code protocol
use_ipv6	Use IPv6

Return values

efirc

EFI status code

Definition at line 709 of file efi_pxe.c.

                                                            {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;
        struct tcpip_net_protocol *ipv6 = tcpip_net_protocol ( AF_INET6 );
        sa_family_t family = ( use_ipv6 ? AF_INET6 : AF_INET );
        int rc;

        DBGC ( pxe, "PXE %s START %s\n",
               pxe->name, ( use_ipv6 ? "IPv6" : "IPv4" ) );

        /* Initialise mode structure */
        memset ( mode, 0, sizeof ( *mode ) );
        mode->AutoArp = TRUE;
        mode->TTL = DEFAULT_TTL;
        mode->ToS = DEFAULT_ToS;
        mode->IpFilter.Filters =
                ( EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP |
                  EFI_PXE_BASE_CODE_IP_FILTER_BROADCAST |
                  EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS |
                  EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS_MULTICAST );

        /* Check for IPv4/IPv6 support */
        mode->Ipv6Supported = ( ipv6 != NULL );
        mode->Ipv6Available = ( ipv6 != NULL );
        pxe->tcpip = tcpip_net_protocol ( family );
        if ( ! pxe->tcpip ) {
                DBGC ( pxe, "PXE %s has no support for %s\n",
                       pxe->name, socket_family_name ( family ) );
                return EFI_UNSUPPORTED;
        }
        pxe->net = pxe->tcpip->net_protocol;
        mode->UsingIpv6 = use_ipv6;

        /* Populate station IP address */
        if ( ( rc = efi_pxe_ip ( pxe ) ) != 0 )
                return rc;

        /* Construct fake DHCP packets */
        efi_pxe_fake_all ( pxe );

        /* Record that base code is started */
        mode->Started = TRUE;
        DBGC ( pxe, "PXE %s using %s\n",
               pxe->name, pxe->net->ntoa ( &mode->StationIp ) );

        return 0;
}

References AF_INET, AF_INET6, base, container_of, DBGC, DEFAULT_ToS, DEFAULT_TTL, EFI_PXE_BASE_CODE_IP_FILTER_BROADCAST, EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS, EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS_MULTICAST, EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP, efi_pxe_fake_all(), efi_pxe_ip(), EFI_UNSUPPORTED, memset(), mode, efi_pxe::mode, efi_pxe::name, efi_pxe::net, tcpip_net_protocol::net_protocol, net_protocol::ntoa, NULL, rc, socket_family_name(), efi_pxe::tcpip, tcpip_net_protocol(), and TRUE.

Referenced by efi_pxe_install().

efi_pxe_stop()

static EFI_STATUS EFIAPI efi_pxe_stop ( EFI_PXE_BASE_CODE_PROTOCOL *  base )

static

Stop PXE base code.

Parameters

base	PXE base code protocol

Return values

efirc

EFI status code

Definition at line 764 of file efi_pxe.c.

                                                                           {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;

        DBGC ( pxe, "PXE %s STOP\n", pxe->name );

        /* Record that base code is stopped */
        mode->Started = FALSE;

        /* Close TFTP */
        efi_pxe_tftp_close ( pxe, 0 );

        /* Close UDP */
        efi_pxe_udp_close ( pxe, 0 );

        return 0;
}

References base, container_of, DBGC, efi_pxe_tftp_close(), efi_pxe_udp_close(), FALSE, mode, efi_pxe::mode, and efi_pxe::name.

Referenced by efi_pxe_uninstall().

efi_pxe_dhcp()

static EFI_STATUS EFIAPI efi_pxe_dhcp ( EFI_PXE_BASE_CODE_PROTOCOL *  base, BOOLEAN  sort  )

static

Perform DHCP.

Parameters

base	PXE base code protocol
sort	Offers should be sorted

Return values

efirc

EFI status code

Definition at line 789 of file efi_pxe.c.

                                                       {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        struct net_device *netdev = pxe->netdev;
        int rc;

        DBGC ( pxe, "PXE %s DHCP %s\n",
               pxe->name, ( sort ? "sorted" : "unsorted" ) );

        /* Claim network devices */
        efi_snp_claim();

        /* Initiate configuration */
        if ( ( rc = netdev_configure_all ( netdev ) ) != 0 ) {
                DBGC ( pxe, "PXE %s could not initiate configuration: %s\n",
                       pxe->name, strerror ( rc ) );
                goto err_configure;
        }

        /* Wait for configuration to complete (or time out) */
        while ( netdev_configuration_in_progress ( netdev ) )
                step();

        /* Report timeout if configuration failed */
        if ( ! netdev_configuration_ok ( netdev ) ) {
                rc = -ETIMEDOUT;
                goto err_timeout;
        }

        /* Update station IP address */
        if ( ( rc = efi_pxe_ip ( pxe ) ) != 0 )
                goto err_ip;

        /* Update faked DHCP packets */
        efi_pxe_fake_all ( pxe );

 err_ip:
 err_timeout:
 err_configure:
        efi_snp_release();
        return EFIRC ( rc );
}

References base, container_of, DBGC, efi_pxe_fake_all(), efi_pxe_ip(), efi_snp_claim(), efi_snp_release(), EFIRC, ETIMEDOUT, efi_pxe::name, netdev, efi_pxe::netdev, netdev_configuration_in_progress(), netdev_configuration_ok(), netdev_configure_all(), rc, step(), and strerror().

efi_pxe_discover()

static EFI_STATUS EFIAPI efi_pxe_discover ( EFI_PXE_BASE_CODE_PROTOCOL *  base, UINT16  type, UINT16 *  layer, BOOLEAN  bis, EFI_PXE_BASE_CODE_DISCOVER_INFO *  info  )

static

Perform boot server discovery.

Parameters

base	PXE base code protocol
type	Boot server type
layer	Boot server layer
bis	Use boot integrity services
info	Additional information

Return values

efirc

EFI status code

Definition at line 843 of file efi_pxe.c.

                                                                        {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        EFI_IP_ADDRESS *ip;
        unsigned int i;

        DBGC ( pxe, "PXE %s DISCOVER type %d layer %d%s\n",
               pxe->name, type, *layer, ( bis ? " bis" : "" ) );
        if ( info ) {
                DBGC ( pxe, "%s%s%s%s %s",
                       ( info->UseMCast ? " mcast" : "" ),
                       ( info->UseBCast ? " bcast" : "" ),
                       ( info->UseUCast ? " ucast" : "" ),
                       ( info->MustUseList ? " list" : "" ),
                       efi_pxe_ip_ntoa ( pxe, &info->ServerMCastIp ) );
                for ( i = 0 ; i < info->IpCnt ; i++ ) {
                        ip = &info->SrvList[i].IpAddr;
                        DBGC ( pxe, " %d%s:%s", info->SrvList[i].Type,
                               ( info->SrvList[i].AcceptAnyResponse ?
                                 ":any" : "" ), efi_pxe_ip_ntoa ( pxe, ip ) );
                }
        }
        DBGC ( pxe, "\n" );

        /* Not used by any bootstrap I can find to test with */
        return EFI_UNSUPPORTED;
}

References base, container_of, DBGC, efi_pxe_ip_ntoa(), EFI_UNSUPPORTED, info, ip, efi_pxe::name, and type.

efi_pxe_mtftp()

static EFI_STATUS EFIAPI efi_pxe_mtftp ( EFI_PXE_BASE_CODE_PROTOCOL *  base, EFI_PXE_BASE_CODE_TFTP_OPCODE  opcode, VOID *  data, BOOLEAN  overwrite, UINT64 *  len, UINTN *  blksize, EFI_IP_ADDRESS *  ip, UINT8 *  filename, EFI_PXE_BASE_CODE_MTFTP_INFO *  info, BOOLEAN  callback  )

static

Perform (M)TFTP.

Parameters

base	PXE base code protocol
opcode	TFTP opcode
data	Data buffer
overwrite	Overwrite file
len	Length of data buffer
blksize	Block size
ip	Server address
filename	Filename
info	Additional information
callback	Pass packets to callback instead of data buffer

Return values

efirc

EFI status code

Definition at line 887 of file efi_pxe.c.

                                                                       {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        int rc;

        DBGC ( pxe, "PXE %s MTFTP %d%s %p+%llx", pxe->name, opcode,
               ( overwrite ? " overwrite" : "" ), data, *len );
        if ( blksize )
                DBGC ( pxe, " blksize %zd", ( ( size_t ) *blksize ) );
        DBGC ( pxe, " %s:%s", efi_pxe_ip_ntoa ( pxe, ip ), filename );
        if ( info ) {
                DBGC ( pxe, " %s:%d:%d:%d:%d",
                       efi_pxe_ip_ntoa ( pxe, &info->MCastIp ),
                       info->CPort, info->SPort, info->ListenTimeout,
                       info->TransmitTimeout );
        }
        DBGC ( pxe, "%s\n", ( callback ? " callback" : "" ) );

        /* Fail unless operation is supported */
        if ( ! ( ( opcode == EFI_PXE_BASE_CODE_TFTP_READ_FILE ) ||
                 ( opcode == EFI_PXE_BASE_CODE_MTFTP_READ_FILE ) ) ) {
                DBGC ( pxe, "PXE %s unsupported MTFTP opcode %d\n",
                       pxe->name, opcode );
                rc = -ENOTSUP;
                goto err_opcode;
        }

        /* Claim network devices */
        efi_snp_claim();

        /* Determine block size.  Ignore the requested block size
         * unless we are using callbacks, since limiting HTTP to a
         * 512-byte TCP window is not sensible.
         */
        pxe->blksize = ( ( callback && blksize ) ? *blksize : -1UL );

        /* Initialise data transfer buffer */
        xferbuf_fixed_init ( &pxe->buf, data, *len );

        /* Open download */
        if ( ( rc = efi_pxe_tftp_open ( pxe, ip,
                                        ( ( const char * ) filename ) ) ) != 0 )
                goto err_open;

        /* Wait for download to complete */
        pxe->rc = -EINPROGRESS;
        while ( pxe->rc == -EINPROGRESS )
                step();
        if ( ( rc = pxe->rc ) != 0 ) {
                DBGC ( pxe, "PXE %s download failed: %s\n",
                       pxe->name, strerror ( rc ) );
                goto err_download;
        }

 err_download:
        efi_pxe_tftp_close ( pxe, rc );
 err_open:
        xferbuf_fixed_init ( &pxe->buf, NULL, 0 );
        efi_snp_release();
 err_opcode:
        return EFIRC ( rc );
}

References base, blksize, efi_pxe::blksize, efi_pxe::buf, container_of, data, DBGC, EFI_PXE_BASE_CODE_MTFTP_READ_FILE, EFI_PXE_BASE_CODE_TFTP_READ_FILE, efi_pxe_ip_ntoa(), efi_pxe_tftp_close(), efi_pxe_tftp_open(), efi_snp_claim(), efi_snp_release(), EFIRC, EINPROGRESS, ENOTSUP, info, ip, len, efi_pxe::name, NULL, opcode, overwrite(), efi_pxe::rc, rc, step(), strerror(), and xferbuf_fixed_init().

efi_pxe_udp_write()

static EFI_STATUS EFIAPI efi_pxe_udp_write ( EFI_PXE_BASE_CODE_PROTOCOL *  base, UINT16  flags, EFI_IP_ADDRESS *  dest_ip, EFI_PXE_BASE_CODE_UDP_PORT *  dest_port, EFI_IP_ADDRESS *  gateway, EFI_IP_ADDRESS *  src_ip, EFI_PXE_BASE_CODE_UDP_PORT *  src_port, UINTN *  hdr_len, VOID *  hdr, UINTN *  len, VOID *  data  )

static

Transmit UDP packet.

Parameters

base	PXE base code protocol
flags	Operation flags
dest_ip	Destination address
dest_port	Destination port
gateway	Gateway address
src_ip	Source address
src_port	Source port
hdr_len	Header length
hdr	Header data
len	Length
data	Data

Return values

efirc

EFI status code

Definition at line 970 of file efi_pxe.c.

                                                                        {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;
        struct io_buffer *iobuf;
        struct xfer_metadata meta;
        union {
                struct sockaddr_tcpip st;
                struct sockaddr sa;
        } dest;
        union {
                struct sockaddr_tcpip st;
                struct sockaddr sa;
        } src;
        int rc;

        DBGC2 ( pxe, "PXE %s UDP WRITE ", pxe->name );
        if ( src_ip )
                DBGC2 ( pxe, "%s", efi_pxe_ip_ntoa ( pxe, src_ip ) );
        DBGC2 ( pxe, ":" );
        if ( src_port &&
             ( ! ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT ) ) ) {
                DBGC2 ( pxe, "%d", *src_port );
        } else {
                DBGC2 ( pxe, "*" );
        }
        DBGC2 ( pxe, "->%s:%d", efi_pxe_ip_ntoa ( pxe, dest_ip ), *dest_port );
        if ( gateway )
                DBGC2 ( pxe, " via %s", efi_pxe_ip_ntoa ( pxe, gateway ) );
        if ( hdr_len )
                DBGC2 ( pxe, " %p+%zx", hdr, ( ( size_t ) *hdr_len ) );
        DBGC2 ( pxe, " %p+%zx", data, ( ( size_t ) *len ) );
        if ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_MAY_FRAGMENT )
                DBGC2 ( pxe, " frag" );
        DBGC2 ( pxe, "\n" );

        /* Open UDP connection (if applicable) */
        if ( ( rc = efi_pxe_udp_open ( pxe ) ) != 0 )
                goto err_open;

        /* Construct destination address */
        efi_pxe_ip_sockaddr ( pxe, dest_ip, &dest.sa );
        dest.st.st_port = htons ( *dest_port );

        /* Construct source address */
        efi_pxe_ip_sockaddr ( pxe, ( src_ip ? src_ip : &mode->StationIp ),
                              &src.sa );
        if ( src_port &&
             ( ! ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT ) ) ) {
                src.st.st_port = htons ( *src_port );
        } else {
                /* The API does not allow for a sensible concept of
                 * binding to a local port, so just use a random value.
                 */
                src.st.st_port = ( random() | htons ( 1024 ) );
                if ( src_port )
                        *src_port = ntohs ( src.st.st_port );
        }

        /* Allocate I/O buffer */
        iobuf = xfer_alloc_iob ( &pxe->udp,
                                 ( *len + ( hdr_len ? *hdr_len : 0 ) ) );
        if ( ! iobuf ) {
                rc = -ENOMEM;
                goto err_alloc;
        }

        /* Populate I/O buffer */
        if ( hdr_len )
                memcpy ( iob_put ( iobuf, *hdr_len ), hdr, *hdr_len );
        memcpy ( iob_put ( iobuf, *len ), data, *len );

        /* Construct metadata */
        memset ( &meta, 0, sizeof ( meta ) );
        meta.src = &src.sa;
        meta.dest = &dest.sa;
        meta.netdev = pxe->netdev;

        /* Deliver I/O buffer */
        if ( ( rc = xfer_deliver ( &pxe->udp, iob_disown ( iobuf ),
                                   &meta ) ) != 0 ) {
                DBGC ( pxe, "PXE %s could not transmit: %s\n",
                       pxe->name, strerror ( rc ) );
                goto err_deliver;
        }

 err_deliver:
        free_iob ( iobuf );
 err_alloc:
        efi_pxe_udp_schedule_close ( pxe );
 err_open:
        return EFIRC ( rc );
}

References base, container_of, data, DBGC, DBGC2, dest, dest_ip, EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT, EFI_PXE_BASE_CODE_UDP_OPFLAGS_MAY_FRAGMENT, efi_pxe_ip_ntoa(), efi_pxe_ip_sockaddr(), efi_pxe_udp_open(), efi_pxe_udp_schedule_close(), EFIRC, ENOMEM, flags, free_iob(), hdr, htons, iob_disown, iob_put, len, memcpy(), memset(), meta, mode, efi_pxe::mode, efi_pxe::name, efi_pxe::netdev, ntohs, random(), rc, sa, src, src_ip, src_port, st, strerror(), efi_pxe::udp, xfer_alloc_iob(), and xfer_deliver().

efi_pxe_udp_read()

static EFI_STATUS EFIAPI efi_pxe_udp_read ( EFI_PXE_BASE_CODE_PROTOCOL *  base, UINT16  flags, EFI_IP_ADDRESS *  dest_ip, EFI_PXE_BASE_CODE_UDP_PORT *  dest_port, EFI_IP_ADDRESS *  src_ip, EFI_PXE_BASE_CODE_UDP_PORT *  src_port, UINTN *  hdr_len, VOID *  hdr, UINTN *  len, VOID *  data  )

static

Receive UDP packet.

Parameters

base	PXE base code protocol
flags	Operation flags
dest_ip	Destination address
dest_port	Destination port
src_ip	Source address
src_port	Source port
hdr_len	Header length
hdr	Header data
len	Length
data	Data

Return values

efirc

EFI status code

Definition at line 1084 of file efi_pxe.c.

                                                                       {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        struct io_buffer *iobuf;
        struct efi_pxe_udp_pseudo_header *pshdr;
        EFI_IP_ADDRESS *actual_dest_ip;
        EFI_IP_ADDRESS *actual_src_ip;
        size_t addr_len;
        size_t frag_len;
        int rc;

        DBGC2 ( pxe, "PXE %s UDP READ ", pxe->name );
        if ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_USE_FILTER ) {
                DBGC2 ( pxe, "(filter)" );
        } else if ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_IP ) {
                DBGC2 ( pxe, "*" );
        } else if ( dest_ip ) {
                DBGC2 ( pxe, "%s", efi_pxe_ip_ntoa ( pxe, dest_ip ) );
        }
        DBGC2 ( pxe, ":" );
        if ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_PORT ) {
                DBGC2 ( pxe, "*" );
        } else if ( dest_port ) {
                DBGC2 ( pxe, "%d", *dest_port );
        } else {
                DBGC2 ( pxe, "<NULL>" );
        }
        DBGC2 ( pxe, "<-" );
        if ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_IP ) {
                DBGC2 ( pxe, "*" );
        } else if ( src_ip ) {
                DBGC2 ( pxe, "%s", efi_pxe_ip_ntoa ( pxe, src_ip ) );
        } else {
                DBGC2 ( pxe, "<NULL>" );
        }
        DBGC2 ( pxe, ":" );
        if ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT ) {
                DBGC2 ( pxe, "*" );
        } else if ( src_port ) {
                DBGC2 ( pxe, "%d", *src_port );
        } else {
                DBGC2 ( pxe, "<NULL>" );
        }
        if ( hdr_len )
                DBGC2 ( pxe, " %p+%zx", hdr, ( ( size_t ) *hdr_len ) );
        DBGC2 ( pxe, " %p+%zx\n", data, ( ( size_t ) *len ) );

        /* Open UDP connection (if applicable) */
        if ( ( rc = efi_pxe_udp_open ( pxe ) ) != 0 )
                goto err_open;

        /* Try receiving a packet, if the queue is empty */
        if ( list_empty ( &pxe->queue ) )
                step();

        /* Remove first packet from the queue */
        iobuf = list_first_entry ( &pxe->queue, struct io_buffer, list );
        if ( ! iobuf ) {
                rc = -ETIMEDOUT; /* "no packet" */
                goto err_empty;
        }
        list_del ( &iobuf->list );

        /* Strip pseudo-header */
        pshdr = iobuf->data;
        addr_len = ( pshdr->net->net_addr_len );
        iob_pull ( iobuf, sizeof ( *pshdr ) );
        actual_dest_ip = iobuf->data;
        iob_pull ( iobuf, addr_len );
        actual_src_ip = iobuf->data;
        iob_pull ( iobuf, addr_len );
        DBGC2 ( pxe, "PXE %s UDP RX %s:%d", pxe->name,
                pshdr->net->ntoa ( actual_dest_ip ), pshdr->dest_port );
        DBGC2 ( pxe, "<-%s:%d len %#zx\n", pshdr->net->ntoa ( actual_src_ip ),
                pshdr->src_port, iob_len ( iobuf ) );

        /* Filter based on network-layer protocol */
        if ( pshdr->net != pxe->net ) {
                DBGC2 ( pxe, "PXE %s filtered out %s packet\n",
                        pxe->name, pshdr->net->name );
                rc = -ETIMEDOUT; /* "no packet" */
                goto err_filter;
        }

        /* Filter based on port numbers */
        if ( ! ( ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_PORT ) ||
                 ( dest_port && ( *dest_port == pshdr->dest_port ) ) ) ) {
                DBGC2 ( pxe, "PXE %s filtered out destination port %d\n",
                        pxe->name, pshdr->dest_port );
                rc = -ETIMEDOUT; /* "no packet" */
                goto err_filter;
        }
        if ( ! ( ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT ) ||
                 ( src_port && ( *src_port == pshdr->src_port ) ) ) ) {
                DBGC2 ( pxe, "PXE %s filtered out source port %d\n",
                        pxe->name, pshdr->src_port );
                rc = -ETIMEDOUT; /* "no packet" */
                goto err_filter;
        }

        /* Filter based on source IP address */
        if ( ! ( ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_IP ) ||
                 ( src_ip &&
                   ( memcmp ( src_ip, actual_src_ip, addr_len ) == 0 ) ) ) ) {
                DBGC2 ( pxe, "PXE %s filtered out source IP %s\n",
                        pxe->name, pshdr->net->ntoa ( actual_src_ip ) );
                rc = -ETIMEDOUT; /* "no packet" */
                goto err_filter;
        }

        /* Filter based on destination IP address */
        if ( ! ( ( ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_USE_FILTER ) &&
                   efi_pxe_ip_filter ( pxe, actual_dest_ip ) ) ||
                 ( ( ! ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_USE_FILTER ) ) &&
                   ( ( flags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_IP ) ||
                        ( dest_ip && ( memcmp ( dest_ip, actual_dest_ip,
                                                addr_len ) == 0 ) ) ) ) ) ) {
                DBGC2 ( pxe, "PXE %s filtered out destination IP %s\n",
                        pxe->name, pshdr->net->ntoa ( actual_dest_ip ) );
                rc = -ETIMEDOUT; /* "no packet" */
                goto err_filter;
        }

        /* Fill in addresses and port numbers */
        if ( dest_ip )
                memcpy ( dest_ip, actual_dest_ip, addr_len );
        if ( dest_port )
                *dest_port = pshdr->dest_port;
        if ( src_ip )
                memcpy ( src_ip, actual_src_ip, addr_len );
        if ( src_port )
                *src_port = pshdr->src_port;

        /* Fill in header, if applicable */
        if ( hdr_len ) {
                frag_len = iob_len ( iobuf );
                if ( frag_len > *hdr_len )
                        frag_len = *hdr_len;
                memcpy ( hdr, iobuf->data, frag_len );
                iob_pull ( iobuf, frag_len );
                *hdr_len = frag_len;
        }

        /* Fill in data buffer */
        frag_len = iob_len ( iobuf );
        if ( frag_len > *len )
                frag_len = *len;
        memcpy ( data, iobuf->data, frag_len );
        iob_pull ( iobuf, frag_len );
        *len = frag_len;

        /* Check for overflow */
        if ( iob_len ( iobuf ) ) {
                rc = -ERANGE;
                goto err_too_short;
        }

        /* Success */
        rc = 0;

 err_too_short:
 err_filter:
        free_iob ( iobuf );
 err_empty:
        efi_pxe_udp_schedule_close ( pxe );
 err_open:
        return EFIRC ( rc );
}

References base, container_of, data, io_buffer::data, DBGC2, dest_ip, efi_pxe_udp_pseudo_header::dest_port, EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_IP, EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_PORT, EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_IP, EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT, EFI_PXE_BASE_CODE_UDP_OPFLAGS_USE_FILTER, efi_pxe_ip_filter(), efi_pxe_ip_ntoa(), efi_pxe_udp_open(), efi_pxe_udp_schedule_close(), EFIRC, ERANGE, ETIMEDOUT, flags, free_iob(), hdr, iob_len(), iob_pull, len, io_buffer::list, list_del, list_empty, list_first_entry, memcmp(), memcpy(), net_protocol::name, efi_pxe::name, efi_pxe::net, efi_pxe_udp_pseudo_header::net, net_protocol::net_addr_len, net_protocol::ntoa, efi_pxe::queue, rc, src_ip, src_port, efi_pxe_udp_pseudo_header::src_port, and step().

efi_pxe_set_ip_filter()

static EFI_STATUS EFIAPI efi_pxe_set_ip_filter ( EFI_PXE_BASE_CODE_PROTOCOL *  base, EFI_PXE_BASE_CODE_IP_FILTER *  filter  )

static

Set receive filter.

Parameters

base	PXE base code protocol
filter	Receive filter

Return values

efirc

EFI status code

Definition at line 1265 of file efi_pxe.c.

                                                              {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;
        unsigned int i;

        DBGC ( pxe, "PXE %s SET IP FILTER %02x",
               pxe->name, filter->Filters );
        for ( i = 0 ; i < filter->IpCnt ; i++ ) {
                DBGC ( pxe, " %s",
                       efi_pxe_ip_ntoa ( pxe, &filter->IpList[i] ) );
        }
        DBGC ( pxe, "\n" );

        /* Update filter */
        memcpy ( &mode->IpFilter, filter, sizeof ( mode->IpFilter ) );

        return 0;
}

References base, container_of, DBGC, efi_pxe_ip_ntoa(), filter, memcpy(), mode, efi_pxe::mode, and efi_pxe::name.

efi_pxe_arp()

static EFI_STATUS EFIAPI efi_pxe_arp ( EFI_PXE_BASE_CODE_PROTOCOL *  base, EFI_IP_ADDRESS *  ip, EFI_MAC_ADDRESS *  mac  )

static

Resolve MAC address.

Parameters

base	PXE base code protocol
ip	IP address
mac	MAC address to fill in

Return values

efirc

EFI status code

Definition at line 1293 of file efi_pxe.c.

                                                              {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );

        DBGC ( pxe, "PXE %s ARP %s %p\n",
               pxe->name, efi_pxe_ip_ntoa ( pxe, ip ), mac );

        /* Not used by any bootstrap I can find to test with */
        return EFI_UNSUPPORTED;
}

References base, container_of, DBGC, efi_pxe_ip_ntoa(), EFI_UNSUPPORTED, ip, mac, and efi_pxe::name.

efi_pxe_set_parameters()

static EFI_STATUS EFIAPI efi_pxe_set_parameters ( EFI_PXE_BASE_CODE_PROTOCOL *  base, BOOLEAN *  autoarp, BOOLEAN *  sendguid, UINT8 *  ttl, UINT8 *  tos, BOOLEAN *  callback  )

static

Set parameters.

Parameters

base	PXE base code protocol
autoarp	Automatic ARP packet generation
sendguid	Send GUID as client hardware address
ttl	IP time to live
tos	IP type of service
callback	Make callbacks

Return values

efirc

EFI status code

Definition at line 1317 of file efi_pxe.c.

                                                         {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;

        DBGC ( pxe, "PXE %s SET PARAMETERS", pxe->name );
        if ( autoarp )
                DBGC ( pxe, " %s", ( *autoarp ? "autoarp" : "noautoarp" ) );
        if ( sendguid )
                DBGC ( pxe, " %s", ( *sendguid ? "sendguid" : "sendmac" ) );
        if ( ttl )
                DBGC ( pxe, " ttl %d", *ttl );
        if ( tos )
                DBGC ( pxe, " tos %d", *tos );
        if ( callback ) {
                DBGC ( pxe, " %s",
                       ( *callback ? "callback" : "nocallback" ) );
        }
        DBGC ( pxe, "\n" );

        /* Update parameters */
        if ( autoarp )
                mode->AutoArp = *autoarp;
        if ( sendguid )
                mode->SendGUID = *sendguid;
        if ( ttl )
                mode->TTL = *ttl;
        if ( tos )
                mode->ToS = *tos;
        if ( callback )
                mode->MakeCallbacks = *callback;

        return 0;
}

References base, container_of, DBGC, mode, efi_pxe::mode, and efi_pxe::name.

efi_pxe_set_station_ip()

static EFI_STATUS EFIAPI efi_pxe_set_station_ip ( EFI_PXE_BASE_CODE_PROTOCOL *  base, EFI_IP_ADDRESS *  ip, EFI_IP_ADDRESS *  netmask  )

static

Set IP address.

Parameters

base	PXE base code protocol
ip	IP address
netmask	Subnet mask

Return values

efirc

EFI status code

Definition at line 1362 of file efi_pxe.c.

                                                                       {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;

        DBGC ( pxe, "PXE %s SET STATION IP ", pxe->name );
        if ( ip )
                DBGC ( pxe, "%s", efi_pxe_ip_ntoa ( pxe, ip ) );
        if ( netmask )
                DBGC ( pxe, "/%s", efi_pxe_ip_ntoa ( pxe, netmask ) );
        DBGC ( pxe, "\n" );

        /* Update IP address and netmask */
        if ( ip )
                memcpy ( &mode->StationIp, ip, sizeof ( mode->StationIp ) );
        if ( netmask )
                memcpy ( &mode->SubnetMask, netmask, sizeof (mode->SubnetMask));

        return 0;
}

References base, container_of, DBGC, efi_pxe_ip_ntoa(), ip, memcpy(), mode, efi_pxe::mode, and efi_pxe::name.

efi_pxe_set_packets()

static EFI_STATUS EFIAPI efi_pxe_set_packets ( EFI_PXE_BASE_CODE_PROTOCOL *  base, BOOLEAN *  dhcpdisc_ok, BOOLEAN *  dhcpack_ok, BOOLEAN *  proxyoffer_ok, BOOLEAN *  pxebsdisc_ok, BOOLEAN *  pxebsack_ok, BOOLEAN *  pxebsbis_ok, EFI_PXE_BASE_CODE_PACKET *  dhcpdisc, EFI_PXE_BASE_CODE_PACKET *  dhcpack, EFI_PXE_BASE_CODE_PACKET *  proxyoffer, EFI_PXE_BASE_CODE_PACKET *  pxebsdisc, EFI_PXE_BASE_CODE_PACKET *  pxebsack, EFI_PXE_BASE_CODE_PACKET *  pxebsbis  )

static

Update cached DHCP packets.

Parameters

base	PXE base code protocol
dhcpdisc_ok	DHCPDISCOVER is valid
dhcpack_ok	DHCPACK received
proxyoffer_ok	ProxyDHCPOFFER received
pxebsdisc_ok	PxeBsDISCOVER valid
pxebsack_ok	PxeBsACK received
pxebsbis_ok	PxeBsBIS received
dhcpdisc	DHCPDISCOVER packet
dhcpack	DHCPACK packet
proxyoffer	ProxyDHCPOFFER packet
pxebsdisc	PxeBsDISCOVER packet
pxebsack	PxeBsACK packet
pxebsbis	PxeBsBIS packet

Return values

efirc

EFI status code

Definition at line 1402 of file efi_pxe.c.

                                                           {
        struct efi_pxe *pxe = container_of ( base, struct efi_pxe, base );
        EFI_PXE_BASE_CODE_MODE *mode = &pxe->mode;

        DBGC ( pxe, "PXE %s SET PACKETS\n", pxe->name );

        /* Update fake packet flags */
        if ( dhcpdisc_ok )
                mode->DhcpDiscoverValid = *dhcpdisc_ok;
        if ( dhcpack_ok )
                mode->DhcpAckReceived = *dhcpack_ok;
        if ( proxyoffer_ok )
                mode->ProxyOfferReceived = *proxyoffer_ok;
        if ( pxebsdisc_ok )
                mode->PxeDiscoverValid = *pxebsdisc_ok;
        if ( pxebsack_ok )
                mode->PxeReplyReceived = *pxebsack_ok;
        if ( pxebsbis_ok )
                mode->PxeBisReplyReceived = *pxebsbis_ok;

        /* Update fake packet contents */
        if ( dhcpdisc )
                memcpy ( &mode->DhcpDiscover, dhcpdisc, sizeof ( *dhcpdisc ) );
        if ( dhcpack )
                memcpy ( &mode->DhcpAck, dhcpack, sizeof ( *dhcpack ) );
        if ( proxyoffer )
                memcpy ( &mode->ProxyOffer, proxyoffer, sizeof ( *proxyoffer ));
        if ( pxebsdisc )
                memcpy ( &mode->PxeDiscover, pxebsdisc, sizeof ( *pxebsdisc ) );
        if ( pxebsack )
                memcpy ( &mode->PxeReply, pxebsack, sizeof ( *pxebsack ) );
        if ( pxebsbis )
                memcpy ( &mode->PxeBisReply, pxebsbis, sizeof ( *pxebsbis ) );

        return 0;
}

References base, container_of, DBGC, memcpy(), mode, efi_pxe::mode, and efi_pxe::name.

efi_apple_get_response()

static EFI_STATUS EFIAPI efi_apple_get_response ( EFI_PXE_BASE_CODE_PACKET *  packet, UINTN *  len, VOID *  data  )

static

Get DHCP/BSDP response.

Parameters

packet	Packet
len	Length of data buffer
data	Data buffer

Return values

efirc

EFI status code

Definition at line 1480 of file efi_pxe.c.

                                      {

        /* Check length */
        if ( *len < sizeof ( *packet ) ) {
                *len = sizeof ( *packet );
                return EFI_BUFFER_TOO_SMALL;
        }

        /* Copy packet */
        memcpy ( data, packet, sizeof ( *packet ) );
        *len = sizeof ( *packet );

        return EFI_SUCCESS;
}

References data, EFI_BUFFER_TOO_SMALL, EFI_SUCCESS, len, and memcpy().

Referenced by efi_apple_get_bsdp_response(), and efi_apple_get_dhcp_response().

efi_apple_get_dhcp_response()

static EFI_STATUS EFIAPI efi_apple_get_dhcp_response ( EFI_APPLE_NET_BOOT_PROTOCOL *  apple, UINTN *  len, VOID *  data  )

static

Get DHCP response.

Parameters

apple	Apple NetBoot protocol
len	Length of data buffer
data	Data buffer

Return values

efirc

EFI status code

Definition at line 1505 of file efi_pxe.c.

                                                       {
        struct efi_pxe *pxe = container_of ( apple, struct efi_pxe, apple );

        return efi_apple_get_response ( &pxe->mode.DhcpAck, len, data );
}

References efi_pxe::apple, container_of, data, EFI_PXE_BASE_CODE_MODE::DhcpAck, efi_apple_get_response(), len, and efi_pxe::mode.

efi_apple_get_bsdp_response()

static EFI_STATUS EFIAPI efi_apple_get_bsdp_response ( EFI_APPLE_NET_BOOT_PROTOCOL *  apple, UINTN *  len, VOID *  data  )

static

Get BSDP response.

Parameters

apple	Apple NetBoot protocol
len	Length of data buffer
data	Data buffer

Return values

efirc

EFI status code

Definition at line 1521 of file efi_pxe.c.

                                                       {
        struct efi_pxe *pxe = container_of ( apple, struct efi_pxe, apple );

        return efi_apple_get_response ( &pxe->mode.PxeReply, len, data );
}

References efi_pxe::apple, container_of, data, efi_apple_get_response(), len, efi_pxe::mode, and EFI_PXE_BASE_CODE_MODE::PxeReply.

efi_pxe_install()

int efi_pxe_install	(	EFI_HANDLE	handle,
		struct net_device *	netdev
	)

Install PXE base code protocol.

Parameters

handle	EFI handle
netdev	Underlying network device

Return values

rc	Return status code

Definition at line 1548 of file efi_pxe.c.

                                                                     {
        EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
        struct tcpip_net_protocol *ipv6 = tcpip_net_protocol ( AF_INET6 );
        struct efi_pxe *pxe;
        struct in_addr ip;
        BOOLEAN use_ipv6;
        int leak = 0;
        EFI_STATUS efirc;
        int rc;

        /* Allocate and initialise structure */
        pxe = zalloc ( sizeof ( *pxe ) );
        if ( ! pxe ) {
                rc = -ENOMEM;
                goto err_alloc;
        }
        ref_init ( &pxe->refcnt, efi_pxe_free );
        pxe->netdev = netdev_get ( netdev );
        pxe->name = netdev->name;
        pxe->handle = handle;
        memcpy ( &pxe->base, &efi_pxe_base_code_protocol, sizeof ( pxe->base ));
        pxe->base.Mode = &pxe->mode;
        memcpy ( &pxe->apple, &efi_apple_net_boot_protocol,
                 sizeof ( pxe->apple ) );
        intf_init ( &pxe->tftp, &efi_pxe_tftp_desc, &pxe->refcnt );
        intf_init ( &pxe->udp, &efi_pxe_udp_desc, &pxe->refcnt );
        INIT_LIST_HEAD ( &pxe->queue );
        process_init_stopped ( &pxe->process, &efi_pxe_process_desc,
                               &pxe->refcnt );

        /* Crude heuristic: assume that we prefer to use IPv4 if we
         * have an IPv4 address for the network device, otherwise
         * prefer IPv6 (if available).
         */
        fetch_ipv4_setting ( netdev_settings ( netdev ), &ip_setting, &ip );
        use_ipv6 = ( ip.s_addr ? FALSE : ( ipv6 != NULL ) );

        /* Start base code */
        efi_pxe_start ( &pxe->base, use_ipv6 );

        /* Install PXE base code protocol */
        if ( ( efirc = bs->InstallMultipleProtocolInterfaces (
                        &handle,
                        &efi_pxe_base_code_protocol_guid, &pxe->base,
                        &efi_apple_net_boot_protocol_guid, &pxe->apple,
                        NULL ) ) != 0 ) {
                rc = -EEFI ( efirc );
                DBGC ( pxe, "PXE %s could not install base code protocol: %s\n",
                       pxe->name, strerror ( rc ) );
                goto err_install_protocol;
        }

        /* Transfer reference to list and return */
        list_add_tail ( &pxe->list, &efi_pxes );
        DBGC ( pxe, "PXE %s installed for %s\n",
               pxe->name, efi_handle_name ( handle ) );
        return 0;

        if ( ( efirc = bs->UninstallMultipleProtocolInterfaces (
                        handle,
                        &efi_pxe_base_code_protocol_guid, &pxe->base,
                        &efi_apple_net_boot_protocol_guid, &pxe->apple,
                        NULL ) ) != 0 ) {
                DBGC ( pxe, "PXE %s could not uninstall: %s\n",
                       pxe->name, strerror ( -EEFI ( efirc ) ) );
                leak = 1;
        }
        efi_nullify_pxe ( &pxe->base );
        efi_nullify_apple ( &pxe->apple );
 err_install_protocol:
        if ( ! leak )
                ref_put ( &pxe->refcnt );
 err_alloc:
        if ( leak )
                DBGC ( pxe, "PXE %s nullified and leaked\n", pxe->name );
        return rc;
}

References AF_INET6, efi_pxe::apple, efi_pxe::base, EFI_SYSTEM_TABLE::BootServices, DBGC, EEFI, efi_apple_net_boot_protocol, efi_apple_net_boot_protocol_guid, efi_handle_name(), efi_nullify_apple(), efi_nullify_pxe(), efi_pxe_base_code_protocol, efi_pxe_base_code_protocol_guid, efi_pxe_free(), efi_pxe_process_desc, efi_pxe_start(), efi_pxe_tftp_desc, efi_pxe_udp_desc, efi_systab, ENOMEM, FALSE, fetch_ipv4_setting(), handle, efi_pxe::handle, INIT_LIST_HEAD, EFI_BOOT_SERVICES::InstallMultipleProtocolInterfaces, intf_init(), ip, efi_pxe::list, list_add_tail, memcpy(), efi_pxe::mode, _EFI_PXE_BASE_CODE_PROTOCOL::Mode, efi_pxe::name, net_device::name, netdev, efi_pxe::netdev, netdev_get(), netdev_settings(), NULL, efi_pxe::process, process_init_stopped(), efi_pxe::queue, rc, ref_init, ref_put, efi_pxe::refcnt, strerror(), tcpip_net_protocol(), efi_pxe::tftp, efi_pxe::udp, EFI_BOOT_SERVICES::UninstallMultipleProtocolInterfaces, and zalloc().

Referenced by efi_image_exec().

efi_pxe_uninstall()

void efi_pxe_uninstall

(

EFI_HANDLE

handle

)

Uninstall PXE base code protocol.

Parameters

handle

EFI handle

Definition at line 1631 of file efi_pxe.c.

                                             {
        EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
        struct efi_pxe *pxe;
        int leak = efi_shutdown_in_progress;
        EFI_STATUS efirc;

        /* Locate PXE base code */
        pxe = efi_pxe_find ( handle );
        if ( ! pxe ) {
                DBG ( "PXE could not find base code for %s\n",
                      efi_handle_name ( handle ) );
                return;
        }

        /* Stop base code */
        efi_pxe_stop ( &pxe->base );

        /* Uninstall PXE base code protocol */
        if ( ( ! efi_shutdown_in_progress ) &&
             ( ( efirc = bs->UninstallMultipleProtocolInterfaces (
                        handle,
                        &efi_pxe_base_code_protocol_guid, &pxe->base,
                        &efi_apple_net_boot_protocol_guid, &pxe->apple,
                        NULL ) ) != 0 ) ) {
                DBGC ( pxe, "PXE %s could not uninstall: %s\n",
                       pxe->name, strerror ( -EEFI ( efirc ) ) );
                leak = 1;
        }
        efi_nullify_pxe ( &pxe->base );
        efi_nullify_apple ( &pxe->apple );

        /* Remove from list and drop list's reference */
        list_del ( &pxe->list );
        if ( ! leak )
                ref_put ( &pxe->refcnt );

        /* Report leakage, if applicable */
        if ( leak && ( ! efi_shutdown_in_progress ) )
                DBGC ( pxe, "PXE %s nullified and leaked\n", pxe->name );
}

References efi_pxe::apple, efi_pxe::base, EFI_SYSTEM_TABLE::BootServices, DBG, DBGC, EEFI, efi_apple_net_boot_protocol_guid, efi_handle_name(), efi_nullify_apple(), efi_nullify_pxe(), efi_pxe_base_code_protocol_guid, efi_pxe_find(), efi_pxe_stop(), efi_shutdown_in_progress, efi_systab, handle, efi_pxe::list, list_del, efi_pxe::name, NULL, ref_put, efi_pxe::refcnt, strerror(), and EFI_BOOT_SERVICES::UninstallMultipleProtocolInterfaces.

Referenced by efi_image_exec().

Variable Documentation

efi_pxe_tftp_operations

struct interface_operation efi_pxe_tftp_operations[]

static

Initial value:

= {
        INTF_OP ( xfer_deliver, struct efi_pxe *, efi_pxe_tftp_deliver ),
        INTF_OP ( xfer_window, struct efi_pxe *, efi_pxe_tftp_window ),
        INTF_OP ( intf_close, struct efi_pxe *, efi_pxe_tftp_close ),
}

PXE file data transfer interface operations.

Definition at line 366 of file efi_pxe.c.

efi_pxe_tftp_desc

struct interface_descriptor efi_pxe_tftp_desc

static

Initial value:

=
        INTF_DESC ( struct efi_pxe, tftp, efi_pxe_tftp_operations )

PXE file data transfer interface descriptor.

Definition at line 373 of file efi_pxe.c.

Referenced by efi_pxe_install().

efi_pxe_udp_operations

struct interface_operation efi_pxe_udp_operations[]

static

Initial value:

= {
        INTF_OP ( xfer_deliver, struct efi_pxe *, efi_pxe_udp_deliver ),
        INTF_OP ( intf_close, struct efi_pxe *, efi_pxe_udp_close ),
}

PXE UDP interface operations.

Definition at line 516 of file efi_pxe.c.

efi_pxe_udp_desc

struct interface_descriptor efi_pxe_udp_desc

static

Initial value:

=
        INTF_DESC ( struct efi_pxe, udp, efi_pxe_udp_operations )

PXE UDP interface descriptor.

Definition at line 522 of file efi_pxe.c.

Referenced by efi_pxe_install().

efi_pxe_process_desc

struct process_descriptor efi_pxe_process_desc

static

Initial value:

=
        PROC_DESC_ONCE ( struct efi_pxe, process, efi_pxe_udp_scheduled_close )

UDP close process descriptor.

Definition at line 582 of file efi_pxe.c.

Referenced by efi_pxe_install().

efi_pxe_base_code_protocol

EFI_PXE_BASE_CODE_PROTOCOL efi_pxe_base_code_protocol

static

Initial value:

= {
        .Revision       = EFI_PXE_BASE_CODE_PROTOCOL_REVISION,
        .Start          = efi_pxe_start,
        .Stop           = efi_pxe_stop,
        .Dhcp           = efi_pxe_dhcp,
        .Discover       = efi_pxe_discover,
        .Mtftp          = efi_pxe_mtftp,
        .UdpWrite       = efi_pxe_udp_write,
        .UdpRead        = efi_pxe_udp_read,
        .SetIpFilter    = efi_pxe_set_ip_filter,
        .Arp            = efi_pxe_arp,
        .SetParameters  = efi_pxe_set_parameters,
        .SetStationIp   = efi_pxe_set_station_ip,
        .SetPackets     = efi_pxe_set_packets,
}

PXE base code protocol.

Definition at line 1448 of file efi_pxe.c.

Referenced by efi_pxe_install().

efi_apple_net_boot_protocol

EFI_APPLE_NET_BOOT_PROTOCOL efi_apple_net_boot_protocol

static

Initial value:

= {
        .GetDhcpResponse = efi_apple_get_dhcp_response,
        .GetBsdpResponse = efi_apple_get_bsdp_response,
}

Apple NetBoot protocol.

Definition at line 1529 of file efi_pxe.c.

Referenced by efi_pxe_install().