Avoid a compiler warning on some versions of gcc by using real
function prototypes.
Reported-by: Rob Shelley <Rob@cirris.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
RSA requires modular exponentiation using arbitrarily large integers.
Given the sizes of the modulus and exponent, all required calculations
can be done without any further dynamic storage allocation. The x86
architecture allows for efficient large integer support via inline
assembly using the instructions that take advantage of the carry flag
(e.g. "adcl", "rcrl").
This implemention is approximately 80% smaller than the (more generic)
AXTLS implementation.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
All axTLS files are now vanilla versions of the upstream axTLS files,
with one minor exception: the unused "ctx" parameter of
bi_int_divide() has been marked with "__unused" to avoid a compilation
error.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
gcc will not warn about unused constant static variables. An unused
test declaration is almost certainly a bug, so ensure that warnings
are generated.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Both HMAC_DRBG using SHA-1 and HMAC_DRBG using SHA-256 are Approved
algorithms in ANS X9.82 for our chosen security strength of 128 bits.
However, general recommendations (see e.g. NIST SP800-57) are to use a
larger hash function in preference to SHA-1.
Since SHA-256 is required anyway for TLSv1.2 support, there is no code
size penalty for switching HMAC_DRBG to also use SHA-256.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
ANS X9.82 Part 4 (April 2011 Draft) Section 13.3.4.2 states that "When
using the derivation function based on a hash function, the output
length of the hash function shall meet or exceed the security strength
indicated by the min_entropy parameter in the Get_entropy_input call",
although this criteria is missing from the pseudocode provided in the
same section.
Add a test for this condition, and upgrade from SHA-1 to SHA-256 since
SHA-1 has an output length of 160 bits, which is insufficient for
generating the (128 * 3/2 = 192) bits required when instantiating the
128-bit strength DRBG.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Replace MD5 implementation with one which is around 20% smaller. This
implementation has been verified using the existing MD5 self-tests.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Minimise code size by forcing the use of memory addresses for
__bswap_16s() and __bswap_64s(). (__bswap_32s() cannot avoid loading the
value into a register.)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Fix a strict-aliasing error on certain versions of gcc.
Reported-by: Marko Myllynen <myllynen@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Replace SHA-1 implementation from AXTLS with a dedicated iPXE
implementation which is around 40% smaller. This implementation has
been verified using the existing SHA-1 self-tests (including the NIST
SHA-1 test vectors).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Use the "bswap" instruction to shrink the size of byte-swapping code,
and provide the in-place variants __bswap_{16,32,64}s.
"bswap" is available only on 486 and later processors. (We already
assume the presence of "cpuid" and "rdtsc", which are available only
on Pentium and later processors.)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Advertise support for TLS version 1.1, and be prepared to downgrade to
TLS version 1.0. Tested against Apache with mod_gnutls, using the
GnuTLSPriorities directive to force specific protocol versions.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow packet transmission to be deferred pending successful ARP
resolution. This avoids the time spent waiting for a higher-level
protocol (e.g. TCP or TFTP) to attempt retransmission.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some PXE stacks (observed with a QLogic 8242) will always try to
prepend a link-layer header, even if the caller uses P_UNKNOWN to
indicate that the link-layer header has already been filled in. This
results in an invalid packet being transmitted.
Work around these faulty PXE stacks where possible by stripping the
existing link-layer header and allowing the PXE stack to (re)construct
the link-layer header itself.
Originally-fixed-by: Buck Huppmann <buckh@pobox.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some iSCSI targets respond to a PDU before receiving the padding
bytes. If the target responds quickly enough, this can cause iPXE to
start processing a new TX PDU before the padding bytes have been sent,
which results in a protocol violation.
Fix by always transmitting the padding bytes along with the data
segment.
Originally-fixed-by: Shyam Iyer <shyam_iyer@dell.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
As RFC 2616 10.3.4 explains, a 303 status is the proper HTTP 1.1
behavior for what most HTTP 1.0 clients did with code 302.
Signed-off-by: Jason Lunz <lunz@acm.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Abstract out the generic line-handling portions of the syslog
putchar() routine, to allow use by other console types.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Explicitly disable the syslog console when no syslog server is
defined, rather than (ab)using the socket family address as an
equivalent console-enabled flag.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Separate out the core HTTP functionality (which is shared by both HTTP
and HTTPS) from the provision of the "http://" URI opener. This
allows for builds that support only "https://" URIs.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The RTC-based entropy source uses the nanosecond-scale CPU TSC to
measure the time between two 1kHz interrupts generated by the CMOS
RTC. In a physical machine these clocks are driven from independent
crystals, resulting in some observable clock drift. In a virtual
machine, the CMOS RTC is typically emulated using host-OS
constructions such as SIGALRM.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Separate out the list of self-tests from the self-test infrastructure.
This allows tests to be run individually. For example:
make bin/sha1_test.iso
Signed-off-by: Michael Brown <mcb30@ipxe.org>
RSA requires the generation of random non-zero bytes (i.e. a sequence
of random numbers in the range [0x01,0xff]). ANS X9.82 provides
various Approved methods for converting random bits into random
numbers. The simplest such method is the Simple Discard Method.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
ANS X9.82 specifies that the start-up tests shall consist of at least
one full cycle of the continuous tests.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
ANS X9.82 specifies several Approved Sources of Entropy Input (SEI).
One such SEI uses an entropy source as the Source of Entropy Input,
condensing each entropy source output after each GetEntropy call.
This can be implemented relatively cheaply in iPXE and avoids the need
to allocate potentially very large buffers.
(Note that the terms "entropy source" and "Source of Entropy Input"
are not synonyms within the context of ANS X9.82.)
Use the iPXE API mechanism to allow entropy sources to be selected at
compilation time.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Treat an empty (zeroed) DRBG as invalid. This ensures that a DRBG
that has not yet been instantiated (or that has been uninstantiated)
will refuse to attempt to generate random bits.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
NIST provides a set of known-answer tests for the Hash_DRBG algorithm,
which includes known answers for the derivation function Hash_df used
as part of Hash_DRBG. Hash_DRBG is not an Approved algorithm for ANS
X9.82, but the known answers for Hash_df (which is part of ANS X9.82)
can still be used as part of the conformance testing for ANS X9.82.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
ANS X9.82 specifies several Approved derivation functions for use in
distributing entropy throughout a buffer. One such derivation
function is Hash_df, which can be implemented using the existing iPXE
SHA-1 functionality.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE exposes some extended capabilities via the PXE FILE API to allow
NBPs such as pxelinux to use protocols other than TFTP. Provide an
equivalent interface as a UEFI protocol so that EFI binaries may also
take advantage of iPXE's extended capabilities.
This can be used with a patched version of elilo, for example:
http://comments.gmane.org/gmane.comp.boot-loaders.elilo.general/147
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Practically speaking, it seems the convention is to only have one
packet pending and not rely upon any mechanism to associate returned
txbuf with txqueue.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This function never did much in this driver anyway, and after commit
b5ed30b2 ("[tg3] Fix compilation on newer gcc versions") it became
apparent that its remaining functionality could be easily moved to
tg3_test_dma().
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
initrd_init() calls umalloc() to allocate space for the initrd image,
but does so before hide_etherboot() has been called. It is therefore
possible for the initrd to end up overwriting iPXE itself.
Fix by converting initrd_init() from an init_fn to a startup_fn.
Originally-fixed-by: Till Straumann <strauman@slac.stanford.edu>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Replace the old Etherboot tg3 driver with a more up-to-date driver
using the iPXE API.
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
ANS X9.82 specifies that an Approved DRBG must consist of an Approved
algorithm wrapped inside an envelope which handles entropy gathering,
prediction resistance, automatic reseeding and other housekeeping
tasks.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Cryptographic random number generation requires an entropy source,
which is used as the input to a Deterministic Random Bit Generator
(DRBG).
iPXE does not currently have a suitable entropy source. Provide a
dummy source to allow the DRBG code to be implemented.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
NIST provides a set of known-answer tests for the HMAC_DRBG algorithm,
which can be used as part of the conformance testing for ANS X9.82.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
ANS X9.82 specifies several Approved algorithms for use in a
Deterministic Random Bit Generator (DRBG). One such algorithm is
HMAC_DRBG, which can be implemented using the existing iPXE SHA-1 and
HMAC functionality. This algorithm provides a maximum security
strength of 128 bits.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The command line may be situated in an area of base memory that will
be overwritten by iPXE's real-mode segments, causing the command line
to be corrupted before it can be used.
Fix by creating a copy of the command line on the prefix stack (below
0x7c00) before installing the real-mode segments.
Reported-by: Dave Hansen <dave@sr71.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
PXENV_FILE_EXIT_HOOK is designed to allow ipxelinux.0 to unload both
the iPXE and pxelinux components without affecting the underlying PXE
stack. Unfortunately, it causes unexpected behaviour in other
situations, such as when loading a non-embedded pxelinux.0 via
undionly.kpxe. For example:
PXE ROM -> undionly.kpxe -> pxelinux.0 -> chain.c32 to boot hd0
would cause control to return to iPXE instead of booting from the hard
disk. In some cases, this would result in a harmless but confusing
"No more network devices" message; in other cases stranger things
would happen, such as being returned to the iPXE shell prompt.
The fundamental problem is that when pxelinux detects
PXENV_FILE_EXIT_HOOK, it may attempt to specify an exit hook and then
exit back to iPXE, assuming that iPXE will in turn exit cleanly via
the specified exit hook. This is not a valid assumption in the
general case, since the action of exiting back to iPXE does not
directly cause iPXE to exit itself. (In the specific case of
ipxelinux.0, this will work since the embedded script exits as soon as
pxelinux.0 exits.)
Fix the unexpected behaviour in the non-ipxelinux.0 cases by including
support for PXENV_FILE_EXIT_HOOK only when using a new .kkkpxe format.
The ipxelinux.0 build process should therefore now use undionly.kkkpxe
instead of undionly.kkpxe.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Very nasty things can happen if a NULL network device is used. Check
that pxe_netdev is non-NULL at the applicable entry points, so that
this type of problem gets reported to the caller rather than being
allowed to crash the system.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
It can sometimes be awkward to prevent additional packets from being
received during a loopback test. Allow such additional packets to be
present without terminating the test.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
On at least one PXE stack (Realtek r8169), PXENV_UNDI_INITIALIZE has
been observed to fail intermittently due to a media test failure (PXE
error 0x00000061). Retrying the call to PXENV_UNDI_INITIALIZE
succeeds, and the NIC is then usable.
It is worth noting that this particular Realtek PXE stack is already
known to be unreliable: for example, it repeatably fails its own
boot-time media test after every warm reboot.
Fix by attempting PXENV_UNDI_INITIALIZE multiple times, with a short
delay between each attempt to allow the link to settle.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The PXE specification requires us to request DHCP options 128 to 135
inclusive, although these have no defined purpose.
Suggested-by: Ralf Buettner <rab@bootix.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The RS bit is used to instruct the NIC to update the TX descriptor
status byte. The RPS bit is used to instruct the NIC to defer this
update until after the packet has been transmitted on the wire (rather
than merely read into the transmit FIFO).
The driver currently sets RPS but not RS. Some e1000 models seem to
interpret this as implying that the status byte should be updated;
some don't. On the ones that don't, we never see any TX completions
and so rapidly run out of TX buffers.
Fix by setting the RS bit in the TX descriptor. (We don't care about
when the packet reaches the wire, so don't bother setting the RPS
bit.)
Reported-by: Miroslav Halas <miroslav.halas@bankofamerica.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some iSCSI targets (observed with stgt) can be configured to reject
connections that do not use header or data digests, and will respond
with "HeaderDigest=Reject" and/or "DataDigest=Reject", while still
allowing the connection to proceed to the full feature phase.
According to a strict reading of RFC3720, we are perfectly safe to
ignore these "Reject" messages: upon such a rejection "the negotiated
key is left at its current value (or default if no value was set)".
Since the default value for both HeaderDigest and DataDigest is
"None", then the only viable conclusion to be drawn is that the value
resulting from "Reject" is still "None".
Unfortunately, stgt doesn't seem to agree with this interpretation of
events, causing us to eventually report an unhelpful "connection timed
out" message to the user when we don't get any response to our first
PDU in full feature phase.
Fix by detecting any rejected parameters and immediately reporting an
error, which at least gives the user some insight as to what the real
problem may be.
Reported-by: Michal Suchanek <hramrach@centrum.cz>
Tested-by: Michal Suchanek <hramrach@centrum.cz>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit 9b99d2a ("[build] Avoid generating ROMs with "match-any" vendor
or device IDs") introduced a regression which caused the UNDI PCI
driver to be omitted from the list of all drivers, and thus to be
excluded from the all-drivers build.
Fix by ensuring that the per-driver section of the Makefile is
generated even when there are no ROMs to be built.
Reported-by: Sven Dreyer <sven@dreyer-net.de>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
WinPE has been observed to call PXENV_UNDI_SHUTDOWN but not
PXENV_STOP_UNDI. This means that Hermon hardware is left partially
active (firmware running and one event queue mapped) when WinPE starts
up, which can cause a Blue Screen of Death.
Fix by ensuring that the hardware is left quiescent (with the firmware
stopped) when no interfaces are open.
Reported-by: Itay Gazit <itayg@mellanox.co.il>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Avoid spurious matches for peer key 0 against empty peer cache
entries, and set the LL_MULTICAST flag in addition to LL_BROADCAST.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The ChipCmd register is only an 8-bit register. The 16-bit access
used by iPXE was causing an issue when used with qemu emulated rtl8139
device which was improperly aligning IOs.
Signed-off-by: Julian Pidancet <julian.pidancet@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow an initrd (such as an embedded script) to be passed to iPXE when
loaded as a .lkrn (or .iso) image. This allows an embedded script to
be varied without recompiling iPXE.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Specify a driver name of "undionly" and a device name based on the
UNDI-reported underlying hardware device. For example:
net0: 52:54:00:12:34:56 using undionly on UNDI-PCI00:03.0 (open)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Drivers are currently expected to initialise only the hardware
address, with the link-layer protocol code taking care of converting
this into a valid link-layer address. Some drivers (e.g. undinet) can
legitimately determine both the hardware and link-layer addresses,
which may differ.
Allow for this situation by checking to see if the link-layer address
is empty before initialising it from the hardware address.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some BIOSes are reported to corrupt %ebx when using INT 15,2401 (see
http://opensolaris.org/jive/thread.jspa?messageID=377026). Guard
against this by preserving all (non-segment) registers.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The symbol_text16 is defined globally by the linker. Use rm_text16
instead of _text16 for the local variable within librm.S to avoid
confusion when reading linker maps.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
All users of imgdownload() require registration of the image, so make
registration an integral part of imgdownload() itself and simplify the
"action" parameter to be one of image_select(), image_exec() et al.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The "sleep" command is generally useful to have. For example:
:dhcp_retry
dhcp && goto dhcp_done
sleep 5
goto dhcp_retry
:dhcp_done
Make the "sleep" command available by default, leaving TIME_CMD
controlling only the (fairly specialist) "time" command.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Arbel seems to crash the system as soon as the first send WQE
completes on an RC queue pair. (NOPs complete successfully, so this
is a problem specific to the work queue rather than the completion
queue.) The cause of this problem has remained unknown for over a
year.
Check in the non-functioning code to avoid bit-rot, and in the hope
that someone will find the fix.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This self-test mechanism is inspired by Perl's Test::Simple and
similar modules. The aim is to encourage the use of self-tests by
making it as easy as possible to create self-test code
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE currently uses the last four bytes of the MAC address as the DHCP
transaction identifier. Reduce the probability of collisions by
generating a random transaction identifier.
Originally-implemented-by: Amos Kong <akong@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Provide a utility to quickly determine the ROM size and .mrom format
support for attached PCI devices. For example:
01:00.0 (1186:4300) supports a 128kB .rom or .mrom
Inspired-by: Wes Frazier <wes.frazier@members.fsf.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
TCP currently neglects to allow sufficient space for its own headers
when allocating I/O buffers. This problem is masked by the fact that
the maximum link-layer header size (802.11) is substantially larger
than the common Ethernet link-layer header.
Fix by allowing sufficient space for any TCP headers, as well as the
network-layer and link-layer headers.
Reported-by: Scott K Logan <logans@cottsay.net>
Debugged-by: Scott K Logan <logans@cottsay.net>
Tested-by: Scott K Logan <logans@cottsay.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The version field of an X.509 certificate appears to be optional.
Reported-by: Sebastiano Manusia <Sebastiano.Manusia@chuv.ch>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
CRLF line terminators are allowed in scripts; the carriage return is
simply interpreted as trailing whitespace and so is ignored. This
fails on lines containing script labels, since the label-finding code
checks for a line containing only the ":" marker and the label itself
(without any trailing whitespace).
Fix by allowing a label to be terminated by either a NUL or a
whitespace character.
Reported-by: Bovey Christian <Christian.Bovey@chuv.ch>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE specifies a value of 0 for cmdline_size, causing GRUB to not pass
in a command line. Fix by setting cmdline_size to the maximum value
of 2047.
Signed-off-by: Valentine Barshak <gvaxon@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
timer->refcnt is allowed to be NULL, in which case the timer's
expired() method may end up freeing the timer object.
Discovered using valgrind.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
When transmitting, use the broadcast link-layer address for any
broadcast address (e.g. 192.168.0.255), not just INADDR_BROADCAST
(255.255.255.255).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Explicitly discard any unicast packets for addresses that we do not
control, to avoid unexpected behaviour when operating in promiscuous
mode (which is now the default, thanks to FCoE).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow the link layer to directly report whether or not a packet is
multicast or broadcast at the time of calling pull(), rather than
relying on heuristics to determine this at a later stage.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
According to section 14.23 of RFC2616, an HTTP Host header without
port implies the default port is used. Thus, when fetching from
anywhere but port 80 for HTTP or 443 for HTTPS, the port ought to be
explicitly given in that header. Otherwise, some servers might fail
to associate the request with the correct virtual host or generate
incorrect self-referencing URLs.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Reported-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The iSCSI TX process can now be woken up by the TCP socket via
xfer_window_changed(), so it is no longer valid to assume that
iscsi_tx_step() can be called in state ISCSI_TX_IDLE only immediately
after completing a transmission.
Fix by calling iscsi_tx_done() only upon a transition into state
ISCSI_TX_IDLE.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some older versions of gcc issue a warning if -ffunction-sections is
used in combination with -g (gcc bug #18553). Inhibit
-ffunction-sections when building with such a version of gcc.
Reported-by: zhengwei <zw111_2001@126.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Provide support for HTTP range requests, and expose this functionality
via the iPXE block device API. This allows SAN booting from a root
path such as:
sanboot http://boot.ipxe.org/freedos/fdfullcd.iso
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow objects to support both streaming and block device protocols, by
starting streaming data only when the data transfer window opens.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Polling for the data-transfer window to become open is wasteful. We
can eliminate the polling loop by using hw_step() as the handler for
an xfer_window_changed() event.
If the window is already open at the time of instantiation, then
xfer_window_changed() may never be called. We can cover this case by
using hw_step() as the step() method of a one-shot process. Since the
signature for an xfer_window_changed() method is identical to the
signature for a process step() method, the same function can be used
for both.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some processes execute only once, and exist solely in order to defer
execution until after the relevant instantiator method has returned.
Such processes do not need to be automatically rescheduled when
executing.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Give the step() method a pointer to the containing object, rather than
a pointer to the process. This is consistent with the operation of
interface methods, and allows a single function to serve as both an
interface method and a process step() method.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Modify the default action for xfer_vredirect() to automatically send
xfer_window_changed() messages to both the new child and the parent
interfaces. This will allow the elimination of processes that simply
poll on xfer_window() to determine when a redirection has completed
successfully.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
ftp_data_deliver() does nothing except pass through the received data
to the xfer interface, and so can be eliminated by using a
pass-through interface.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some bootloaders seem to add "BOOT_IMAGE=..." at the end of the
command line; some at the start. Cope with either variation.
Reported-by: Dave Hansen <dave@sr71.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
At the time of attempting ARP resolution, we already know the
transmitting network device. We can therefore record ARP errors using
netdev_tx_err() so that they show up in the output of "ifstat".
Inspired-by: Dominik Russenberger <dominik.russenberger@terreactive.ch>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow TX errors to be recorded against a network device even when the
packet didn't make it as far as netdev_tx().
Inspired-by: Dominik Russenberger <dominik.russenberger@terreactive.ch>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
IBM BIOSes ignore the PnP header offset stored at address 0x1a and
instead scan for the $PnP signature on a 16-byte boundary. (This
alignment is not mandated by the PnP specification.)
Force PnP header to a 16-byte boundary to work around these BIOSes.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Several BIOSes (including most IBM BIOSes and many virtual machine
BIOSes) do not provide detectable PnP support, but will use the BEV
entry point for a PnP option ROM. On these semi-PnP BIOSes, iPXE will
respond to the absence of detectable PnP support by hooking INT19,
which disrupts the boot order.
BIOSes that genuinely require hooking INT19 seem to be very rare
nowadays. It may therefore be preferable to assume that the absence
of detectable PnP support indicates a semi-PnP BIOS rather than a
non-PnP BIOS.
Change the default behaviour so that INT19 will never be hooked unless
the compile-time option NONPNP_HOOK_INT19 is enabled. Leave the
redundant PnP detection routine in-place to allow for debugging via
the ROM banner line.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Revert commit 38cd351 ("[romprefix] Attempt to gracefully handle
semi-PnP IBM BIOSes"), since the test for the "IBM " signature in %edi
is not sufficient to identify an IBM BIOS.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
(Ab)use the "ident" field in transmitted IPv4 packets to convey
metadata about the network device. In particular:
bits 0-3 represent the low bits of the "RX" good packet counter
bits 4-7 represent the low bits of the "RXE" bad packet counter
bits 8-15 represent the transmitted packet sequence number
This allows some relevant information about the internal state of the
network device to be read out from a packet trace from a non-debug
build of iPXE. In particular, it allows a packet trace containing
packets transmitted by iPXE to indicate whether or not any packets
have been received by iPXE.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Booting from an HTTP SAN will require HTTP range requests, which are
defined only in HTTP/1.1 and above. HTTP/1.1 mandates support for
"Transfer-Encoding: chunked", so we must support it.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This reverts commit 15c1200 ("[hermon] Work around missing mport
support in current BOFM implementations").
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Newer BOFM builds provide support for mapping multiple physical ports
to a single PCI bus:dev.fn via PCI VPD descriptions. These builds
will also leave the {slot,port} field intact, and will populate the
mport field with a meaningful value.
Older BOFM builds will zero out the {slot,port} field. A zero value
in this field may indicate either a genuine zero value (i.e. slot 0
first port) or an older build.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some IBM BIOSes provide partial support for PnP: they will use the BEV
entry point but will not advertise PnP support. This causes iPXE to
hook INT 19, which disrupts the boot process.
Attempt to improve this situation by detecting an IBM BIOS and
treating it as a PnP BIOS despite the absence of a PnP signature.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some versions of binutils have curious concepts of what constitutes
subtraction. For example:
0x00000000000000f0 _text16_late = .
0x0000000000000898 _mtext16 = .
0x0000000000000898 _etext16 = .
0x0000000000000898 _text16_late_filesz = ABSOLUTE ((_mtext16 - _text16_late))
0x00000000000007a8 _text16_late_memsz = ABSOLUTE ((_etext16 - _text16_late))
This has interesting side-effects such as producing sizes for .bss
segments that are negative, causing the majority of addressable memory
to be zeroed out.
Fix by using the form
ABSOLUTE ( x ) - ABSOLUTE ( y )
rather than
ABSOLUTE ( x - y )
Reported-by: H. Peter Anvin <hpa@zytor.com>
Suggested-by: H. Peter Anvin <hpa@zytor.com>
Tested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This allows older versions of ELTORITO.SYS (such as the version found
on the FreeDOS installation CD-ROM) to use iPXE's emulated CD-ROM
drive.
Reported-by: Robin Smidsrød <robin@smidsrod.no>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Make the build command line less cumbersome by accepting
make DEBUG=int13 EMBED=test.ipxe
rather then
make DEBUG=int13 EMBEDDED_IMAGE=test.ipxe
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Expose the multiple-SAN-drive capability of the iPXE core via the iPXE
command line by adding commands to hook and unhook additional drives.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some PXE stacks (notably old Etherboot/gPXE stacks) will claim to use
the timer interrupt, rather than reporting that interrupts are not
supported. Since using the timer interrupt is equivalent to polling
anyway, we may as well genuinely poll these stacks.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
PCI_ROM() and ISA_ROM() macros occur only within driver files.
Running parserom.pl on non-driver files is therefore redundant.
Skip running parserom.pl on any files outside a "drivers" directory.
This reduces the time taken to generate build rules and dependencies
after a "make veryclean" by around 12%.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
There is no plausible scenario I can think of in which "isset" would
be used with more than one argument. Simplify the code by specifying
that exactly one argument is required.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Current BOFM versions are unable to create entries with mport>1, which
means that only the port 1 MAC address can be explicitly specified.
Work around this by using the provided MAC address as a base address
for all subsequent ports. For example, if BOFM assigns the address
00:1A:64:76:00:09 for port 1
then we will assign the addresses
00:1A:64:76:00:09 for port 1
00:1A:64:76:00:0a for port 2
Future BOFM versions that may correctly support mport will work with
this scheme without modification provided that the BOFM entries are
created in increasing order of mport. Since BOFM tools tend to
generate entries in increasing order (of slot, port, etc), this is not
an unreasonable compromise.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
GNU gold (part of newer binutils builds) does not appear to be
designed to support generic linker functionality, since its source
code contains several Linux-specific hard-coded assumptions about the
layout of ELF binaries. Attempting to build iPXE using GNU gold will
generally cause some kind of "linker internal error".
Provide an explicit error message suggesting the use of GNU ld
instead.
Reported-by: Chris Hills <chaz@chaz6.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit 3f442d3 ("[tcp] Record ts_recent on first received packet")
failed to achieve its stated intention.
Fix this (and reduce the code size) by moving the ts_recent update to
tcp_rx_seq(). This is the code responsible for advancing the window,
called by both tcp_rx_syn() and tcp_rx_data(), and so the window check
is now redundant.
Reported-by: Frank Weed <zorbustheknight@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit b5f5f73 ("[cmdline] Expand settings within each command-line
token individually") introduced a regression into the "isset" command:
it is now possible for command-line arguments to be empty strings, and
so "isset" cannot simply check for a non-empty argument list.
Restore previous behaviour by checking for the presence of any
non-empty arguments, rather than checking for a non-empty argument
list.
Reported-by: Nemtallah Daher <n.daher@csuohio.edu>
Tested-by: Nemtallah Daher <n.daher@csuohio.edu>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Set the current working URI to NULL rather than to "tftp://0.0.0.0/".
Reported-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Standardise on using init_editstring() to initialise an embedded
editable string, to match the coding style used by other embedded
objects.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
A PCI_ROM() entry containing a vendor or device ID of PCI_ANY_ID
(0xffff) indicates to pci_find_driver() that the entry's vendor or
device ID should be ignored when matching against the device's vendor
or device ID. It does not represent a PCI ROM that should be built.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Each PCI ROM currently ends up appearing twice in the $(ROMS) list:
once under its designated name (e.g. "rtl8139.rom"), once under its
PCI IDs (e.g. "bin/10ec8139.rom").
Include only the latter of these in the $(ROMS) list, so that doing
"make allroms" will generate only one copy of each ROM.
Reported-by: Bastian Blank <waldi@debian.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
For devices that start in a link-down state, the user will see a
message such as:
[Link status: The socket is not connected (http://ipxe.org/38086001)]
Waiting for link-up on net0...
This is potentially misleading, since it suggests that there is a
genuine problem. Add a dedicated error message for "link down",
giving instead:
[Link status: Down (http://ipxe.org/38086101)]
Waiting for link-up on net0...
Reported-by: Tal Aloni <tal.aloni.il@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The original EFI BOFM protocol has a design flaw that limits the size
of the table to 1kB, since the table is embedded within the
IBM_BOFM_DRIVER_CONFIGURATION_PROTOCOL structure. Version 2 of the
protocol works around this problem.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE operates the forcedeth NIC in promiscuous mode, and never changes
the unicast MAC address filter registers. We should not therefore set
the flag indicating (to other drivers loaded later) that the MAC
address order has already been corrected.
Reported-by: Tal Aloni <tal.aloni.il@gmail.com>
Tested-by: Tal Aloni <tal.aloni.il@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The forcedeth driver currently implements unicast MAC address
filtering in software. This is almost invariably the wrong thing to
do (since the network stack must already be able to cope with unwanted
packets) and it breaks FCoE (which requires the card to operate in
promiscuous mode).
Also, the implementation is buggy: is_local_ether_addr() is used to
check for a locally-assigned Ethernet address (not to check for a
unicast address), and the current link-layer address is in
netdev->ll_addr, not netdev->hw_addr.
Fix by removing this code.
Reported-by: Tal Aloni <tal.aloni.il@gmail.com>
Tested-by: Tal Aloni <tal.aloni.il@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
A scriptlet is a single iPXE command that can be stored in
non-volatile option storage and used to override the default
"autoboot" behaviour without having to reflash the iPXE image.
For example, a scriptlet could contain
autoboot || reboot
to instruct iPXE to reboot the system if booting fails.
Unlike an embedded image, the presence of a scriptlet does not inhibit
the initial "Press Ctrl-B..." prompt. This allows the user to recover
from setting a faulty scriptlet.
Originally-implemented-by: Glenn Brown <glenn@myri.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Perform settings expansion after tokenisation, and only at the point
of executing each command. This allows statements such as
dhcp && echo ${net0/ip}
to work correctly.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
It is currently possible to construct a sequence of commands to be
executed regardless of success or failure using "|| &&" as the command
separator. (The "||" captures the failure case, the blank command
converts it to a success case.)
Allow ";" to be used as a more visually appealing (and
space-efficient) alternative.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Temporary modification to prevent valgrind.h from breaking compilation
with gcc 4.6. When this problem is fixed upstream, a new and
unmodified copy of valgrind.h should be imported.
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Avoid unused-but-set variable warning in gcc 4.6 which was introduced
by commit 9215b7f ("[forcedeth] Clear the MII link status register on
link status changes").
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
An iPXE .exe image can be loaded from DOS. Tested using bin/ipxe.exe
to load a Linux kernel and simple initramfs from within MS-DOS 6.22.
(EDD must be disabled using the "edd=off" kernel parameter, since the
loaded kernel image has already overwritten parts of DOS' INT 13
wrapper.)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
In the unlikely (but observable) event that INT 15,88 returns less
memory above 1MB than is required for the temporary decompression
area, ignore it and use the 1MB point anyway.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Make the allocators used by malloc and linux_umalloc valgrindable.
Include valgrind headers in the codebase to avoid a build dependency
on valgrind.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
There is no need to explicitly call basename() to construct an image
name in imgfetch_core_exec(), since image_set_uri() will do so
automatically anyway (and will do so without getting confused by URIs
with query strings).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
netdev_close() assumes that devices that are open are on the
open_list, which wasn't true if device specific opening failed.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The "read" command allows a script to prompt a user to enter a
setting. For example:
echo -n Static IP address:
read net0/ip
Total cost: 17 bytes.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit 6861304 ("[tcp] Handle out-of-order received packets")
introduced a regression in which ts_recent would not be updated until
the first packet is received in the ESTABLISHED state, i.e. the
timestamp from the SYN+ACK packet would be ignored. This causes the
connection to be dropped by strictly-conforming TCP peers, such as
FreeBSD.
Fix by delaying the timestamp window check until after processing the
received SYN flag.
Reported-by: winders@sonnet.com
Signed-off-by: Michael Brown <mcb30@ipxe.org>
bin/ipxe.lkrn is built anyway in order to create bin/ipxe.iso, so
there is no additional cost to including it within the default build.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Normalise the progress figures to ensure that multiplication by 100
(to produce a percentage) cannot result in integer overflow.
Reported-by: Sven Dreyer <sven@dreyer-net.de>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE documentation tends to refer to "settings" rather than "options",
since settings can be more general than DHCP options.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some PXE stacks advertise that interrupts are not supported, despite
requiring the use of interrupts. Attempt to cope with such cards
without breaking others by always hooking the interrupt, and using the
"interrupts supported" flag only to decide whether or not to wait for
an interrupt before calling PXENV_UNDI_ISR_IN_PROCESS.
The possible combinations are therefore:
1. Card generates interrupts and claims to support interrupts
iPXE will call PXENV_UNDI_ISR_IN_PROCESS only after an interrupt
has been observed. (This is required to avoid lockups in some PXE
stacks, which spuriously sulk if called before an interrupt has
been generated.)
Such a card should work correctly.
2. Card does not generate interrupts and does not claim to support
interrupts
iPXE will call PXENV_UNDI_ISR_IN_PROCESS indiscriminately, matching
the observed behaviour of at least one other PXE NBP (winBoot/i).
Such a card should work correctly.
3. Card generates interrupts but claims not to support interrupts
iPXE will call PXENV_UNDI_ISR_IN_PROCESS indiscriminately. An
interrupt will still result in a call to PXENV_UNDI_ISR_IN_START.
Such a card may work correctly.
4. Card does not generate interrupts but claims to support interrupts
Such a card will not work at all.
Reported-by: Jerry Cheng <jaspers.cheng@msa.hinet.net>
Tested-by: Jerry Cheng <jaspers.cheng@msa.hinet.net>
Reported-by: Mauricio Silveira <mauricio@livreti.com.br>
Tested-by: Mauricio Silveira <mauricio@livreti.com.br>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Improve the appearance of the "config" user interface by ensuring that
settings appear in some kind of logical order.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit 5fbd020 ("[settings] Display canonical setting name in output
of "show" command") introduced a regression causing all setting
expansions (e.g. "${net0/mac}") to expand to an empty string.
Fix by returning the formatted value length from
fetchf_named_setting(), as expected by the caller.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow the user to browse through the settings block hierarchy.
Originally-implemented-by: Glenn Brown <glenn@myri.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Display only settings relevant to the current scope. For example,
"config net0" no longer displays SMBIOS settings, and "config smbios"
displays only SMBIOS settings.
Originally-implemented-by: Glenn Brown <glenn@myri.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Enable the "show" command to display the full, canonicalised name of
the fetched setting. For example:
iPXE> show mac
net0/mac:hex = 52:54:00:12:34:56
iPXE> dhcp && show ip
DHCP (net0 52:54:00:12:34:56)... ok
net0.dhcp/ip:ipv4 = 10.0.0.168
iPXE> show net0/6
net0.dhcp/dns:ipv4 = 10.0.0.6
Inspired-by: Glenn Brown <glenn@myri.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Expose settings_name(), shrink the unnecessarily large static buffer,
properly name root settings block, and simplify.
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Expose a function setting_applies() to allow a caller to determine
whether or not a particular setting is applicable to a particular
settings block.
Restrict DHCP-backed settings blocks to accepting only DHCP-based
settings.
Restrict network device settings blocks to accepting only DHCP-based
settings and network device-specific settings such as "mac".
Inspired-by: Glenn Brown <glenn@myri.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The "us" keyboard layout contains a mapping for keycode 86 (which
seems not to correspond to any physical key on many US keyboards) to
the ASCII character '<'. This mapping causes conflicts with the
mapping for keycode 51, which also maps (with shift) to '<'.
Change the keyboard mapping generator to choose the lowest keycode for
each ASCII character as indicating the relevant mapping to use, on the
basis that a lower keycode roughly indicates a "more normal" key. On
a German keyboard, which has keys for both keycode 51 and keycode 86
present, this causes '<' to be remapped to ';', which is a closer
match to typical user expectations.
Reported-by: Sven Dreyer <sven@dreyer-net.de>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
From a cursory examination, it appears as though the calculation of
tx_available is redundant, since eepro_transmit() waits for transmit
completion before returning anyway.
Reported-by: Ralph Giles <giles@thaumas.net>
Tested-by: Ralph Giles <giles@thaumas.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
On reset and close, the ICR register is read to clear any pending
interrupts, but the value is simply ignored. Avoid assigning the
value to a variable, to inhibit a warning from gcc 4.6.
Also fix a potential race condition in reset routines which clear
interrupts before disabling them.
Reported-by: Ralph Giles <giles@thaumas.net>
Tested-by: Ralph Giles <giles@thaumas.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
These unused portions trigger a compiler warning under gcc 4.6, due to
the ambiguity over the "page" field in struct igbvf_buffer.
Reported-by: Ralph Giles <giles@thaumas.net>
Tested-by: Ralph Giles <giles@thaumas.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
A construction such as "assert ( ptr != NULL )" seems to trigger a
false positive warning in gcc 4.6 if the value of "ptr" is known at
compile-time to be non-NULL. Use -Wno-address to inhibit this
warning.
Reported-by: Ralph Giles <giles@thaumas.net>
Tested-by: Ralph Giles <giles@thaumas.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The __table_entries() construction seems to trigger a false positive
warning in gcc 4.6 relating to variables which are set but never
used. Add __attribute__((unused)) to inhibit this warning.
Reported-by: Ralph Giles <giles@thaumas.net>
Tested-by: Ralph Giles <giles@thaumas.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The keymap files, though autogenerated, are checked in to version
control and should be considered as source files. They should never
be automatically rebuilt.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Inspired by LILO's keytab-lilo.pl, genkeymap.pl uses "loadkeys -b" to
obtain a Linux keyboard map, and generates a file keymap_xx.c in
hci/keymap.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Re-open the EFI_PCI_IO_PROTOCOL specifying an Attributes value of
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER. This causes the SNP devices to
be marked as children of the EFI PCI device (as shown in the "devtree"
command).
On at least one IBM blade system, this is required in order to have
the relevant drivers automatically attach to the SNP controller at
device creation time.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE allocates its first PMM block using the image source length,
which is rounded up to the nearest 16-byte paragraph. It then copies
in data of a length calculated from the ROM size, which is
theoretically less than or equal to the image source length, but is
rounded up to the nearest 512-byte sector. This can result in copying
beyond the end of the allocated PMM block, which can corrupt the PMM
data structures (and other essentially arbitrary areas of memory).
Fix by rounding up the image source length to the nearest 512-byte
sector before using it as the PMM allocation length.
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Reported-by: Jarrod Johnson <jarrod.b.johnson@gmail.com>
Reported-by: Itay Gazit <itayg@mellanox.co.il>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
In a virtual environment such as qemu, we can legitimately receive
packets less than 64 bytes in length, such as ARP replies. These are
currently discarded, causing most IPv4 communication to fail.
Fix by ignoring the RFDShort bit when receiving packets.
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
INT 16,01 will discard some extended keystrokes on some BIOSes, making
it impossible for iPXE to detect keypresses such as F12. Fix by using
INT 16,11 instead.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
A script that downloads a new image using imgdownload() with the
action register_and_replace_image() can now be freed immediately
before the replacement image is executed. This functionality is not
yet exposed via an iPXE command.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
These functions are used only as the "action" parameters to
imgdownload() or imgfetch(), and so belong in imgmgmt.c rather than
image.c
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some prefixes (e.g. .lkrn) allow a command line to be passed in to
iPXE. At present, this command line is ignored.
If a command line is provided, treat it as an embedded script (without
an explicit "#!ipxe" magic marker). This allows for patterns of
invocation such as
title iPXE
kernel /boot/ipxe.lkrn dhcp && \
sanboot iscsi:10.0.4.1::::iqn.2010-04.org.ipxe.dolphin:storage
Here GRUB is instructed to load ipxe.lkrn with an embedded script
equivalent to
#!ipxe
dhcp
sanboot iscsi:10.0.4.1::::iqn.2010-04.org.ipxe.dolphin:storage
This can be used to effectively vary the embedded script without
having to rebuild ipxe.lkrn.
Originally-implemented-by: Dave Hansen <dave@sr71.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The "prompt" command exposes the prompt() function, allowing a script
to prompt the user for a keypress and take action depending on the
result. For example
#!ipxe
prompt -k 0x197e -t 2000 Press F12 to boot from network... || exit
autoboot
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The function keys F5-F12 all conform to the same ANSI pattern as the
other "special" keys that we currently recognise. Add these key
definitions, and shrink the representation of the ANSI sequences in
bios_console.c to compensate.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Refactor the {load,exec} image operations as {probe,exec}. This makes
the probe mechanism cleaner, eliminates some forward declarations,
avoids holding magic state in image->priv, eliminates the possibility
of screwing up between the "load" and "exec" stages, and makes the
documentation simpler since the concept of "loading" (as distinct from
"executing") no longer needs to be explained.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
When chainloading rtl8139.pxe from an old Etherboot rtl8139.zrom, iPXE
can end up misreading the first word of the MAC address from the
EEPROM as being all zeroes. This is presumably because Etherboot has
left the serial EEPROM in an unexpected state.
Fix by using the chip select line to reset the SPI device before we
start accessing it.
Reported-by: Mandar U Jog <mandarjog@gmail.com>
Tested-by: Mandar U Jog <mandarjog@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The online documentation (e.g. http://ipxe.org/cmd/ifopen), though not
yet complete, is far more comprehensive than could be provided within
the iPXE binary. Save around 200 bytes (compressed) by removing the
command descriptions from the interactive help, and instead referring
users directly to the web page describing the relevant command.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The default initiator IQN is "iqn.2000-09.org.etherboot:UNKNOWN".
This is problematic for two reasons:
a) the etherboot.org domain (and hence the associated IQN namespace)
is not under the control of the iPXE project, and
b) some targets (correctly) refuse to allow concurrent connections
from different initiators using the same initiator IQN.
Solve both problems by changing the default initiator IQN to be
iqn.2010-04.org.ipxe:<hostname> if a hostname is set, or
iqn.2010-04.org.ipxe:<uuid> if no hostname is set.
Explicit initiator IQNs set via DHCP option 203 are not affected by
this change.
Unfortunately, this change is likely to break some existing
configurations, where ACL rules have been put in place referring to
the old default initiator IQN. Users may need to update ACLs, or
force the use of the old IQN using an iPXE script line such as
set initiator-iqn iqn.2000-09.org.etherboot:UNKNOWN
or a dhcpd.conf option such as
option iscsi-initiator-iqn "iqn.2000-09.org.etherboot:UNKNOWN"
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Most callers of functions in the fetch_setting() family treat any
errors as meaning "non-existent setting". In the case of
fetch_string_setting_copy(), an existent setting can still result in
an error due to memory allocation failure.
Allow the caller to distinguish between a non-existent setting and an
error in allocating memory for the copy, by returning success (and a
NULL buffer pointer) for a non-existent setting.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
For consistency with other functions in the fetch_setting() family,
ensure that fetch_string_setting_copy() always initialises the pointer
to the fetched setting even if fetching fails.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Most builds will not have BOFM enabled. In these builds, allow all
BOFM code (including BOFM-only code within the individual drivers) to
be garbage-collected at link time in order to save space in the final
binary.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Testing BOFM involves gaining access to an IBM blade chassis, which is
often not practical. Provide a facility for testing BOFM
functionality outside of a real IBM blade context.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Currently, if both a filename and root-path are present, iPXE will
hook the SAN device but will only attempt to boot from the filename.
Change this behaviour so that both are attempted. Users who want to
avoid booting from the SAN as a fallback can do so via the existing
"skip-san-boot" setting.
This allows for seamless deployment to a SAN target using Windows
Deployment Services (and similar products). A user simply has to
define the root-path option in DHCP and then use WDS to deploy the
system. No further configuration should be required.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
If the NBP returns, then always print a trailing newline, since some
NBPs (e.g. wdsnbp.com) leave the cursor in a random position halfway
across the screen.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow the monojob controlling the download to complete before calling
register_image() and friends. This allows the trailing "ok" from
monojob.c to be printed before the image starts executing (and
possibly printing output of its own).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
We currently use INT 13,00 as an opportunity to reopen the underlying
block device, which works well for callers such as DOS that will use
INT 13,00 in response to any disk errors. However, some callers (such
as Windows Server 2008) do not attempt to reset the disk, and so any
failures become effectively permanent.
Fix this by automatically reopening the underlying block device
whenever we might want to access it.
This makes direct installation of Windows to an iSCSI target much more
reliable.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The "size" bit (aka the D/B) bit should (as far as I can tell) be
irrelevant for accesses to a non-code, non-stack, expand-upwards
segment. However, VirtualBox fails on some accesses via this segment
if this bit is not set.
This change allows iPXE to boot under VirtualBox without having to
disable VT-x/AMD-V support.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Building the Linux-specific code (tap.o et al) requires external
headers that have proven to be extremely variable across systems,
causing frequent build failures.
Until this situation is rectified, remove the Linux-specific code from
the default (non-Linux build).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
After a more accurate reading of RFC 3720, it becomes clear how NOPs
are supposed to work. The current implementation (which just ignores
NOP-Ins) is sufficient to cope with NOP-Ins sent to update CmdSN, but
will need to be extended before it can cope with NOP-Ins sent as iSCSI
keepalives.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some iSCSI targets (observed with a Synology DS207+ NAS) send
unsolicited NOP-Ins to the initiator. RFC 3720 is remarkably unclear
and possibly self-contradictory on how NOPs are supposed to work, but
it seems as though we can legitimately just ignore any unsolicited
NOP-In PDU.
Reported-by: Marc Lecuyer <marc@maxiscreen.com>
Originally-implemented-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some binutils versions will drag in an object to satisfy the entry
symbol; some won't. Try to cope with this exciting variety of
behaviour by ensuring that all entry symbols are unique.
Remove the explicit inclusion of the prefix object on the linker
command line, since the entry symbol now provides all the information
needed to identify the prefix.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit 623469d ("[build] Eliminate unused sections at link-time")
introduced a regression in several build formats, in which the prefix
would end up being garbage-collected out of existence. Fix by
ensuring that an entry symbol exists in each possible prefix, and is
required by the linker script.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Use -ffunction-sections, -fdata-sections, and --gc-sections to
automatically prune out any unreferenced sections.
This saves around 744 bytes (uncompressed) from the rtl8139.rom build.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit d7736fb ("[efi] Allow EFI to control PCI bus enumeration")
introduced a bug in which the EFI driver name became an
(uninitialised) pointer rather than an array.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
EFI performs its own PCI bus enumeration. Respect this, and start
controlling devices only when instructed to do so by EFI.
As a side benefit, we should now correctly create multiple SNP
instances for multi-port devices.
This should also fix the problem of failing to enumerate devices
because the PCI bridges have not yet been enabled at the time the iPXE
driver is loaded.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some operating environments require (or at least prefer) that we do
not perform our own PCI bus scan, but deal only with specified
devices. Modularise the PCI core to allow for this.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Merge the "bus" and "devfn" fields into a single "busdevfn" field, to
match the format used by the majority of external code.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
On 64-bit builds, MLX_DECLARE_STRUCT() produces a structure that is
always a multiple of 64 bits long, causing the HCR structure to be
over-length by one dword. This in turn causes hermon_cmd() to write
beyond the end of the HCR, which causes commands to fail.
Reported-by: Itay Gazit <itayg@mellanox.co.il>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Avoid memory leak of untreated events by having circular event queue
operation.
Signed-off-by: Itay Gazit <itaygazit@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some BIOSes can report multiple memory regions which may be adjacent
and the same type. Since only the first region is used in the
mboot.c32 layer it's possible to run out of memory when loading all of
the boot modules. One may get around this problem by having iPXE
merge these memory regions internally.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Remove duplicate hardware resets, remove network interface logic
reset.
This also fixes a bug where some 3c905C variants would return bogus
EEPROM values because of a too short delay after the network reset.
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Reported-by: Peter Huewe <peterhuewe@gmx.de>
Tested-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
DBG is reserved for errors and important warnings only.
DBG2 for additional information, e.g. "received packet".
DBGP is used to print the name of every function as it is called.
Signed-off-by: Thomas Miletich<thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This (hopefully) fixes a regression introduced in commit e088892
("[autoboot] Connect SAN disk during a filename boot, if applicable").
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow the DHCP filename and root-path to contain settings expansions,
such as
http://boot.ipxe.org/demo/boot.php?mac=${mac:hexhyp}
Originally-implemented-by: Jarrod Johnson <jarrod.b.johnson@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
For performing installations direct to a SAN target, it can be very
useful to hook a SAN disk and then proceed to perform a filename boot.
For example, the user may wish to hook the (empty) SAN installation
disk and then boot into the OS installer via TFTP. This provides an
alternative mechanism to using "keep-san" and relying on the BIOS to
fall through to boot from the installation media, which is unreliable
on many BIOSes.
When a root-path is specified in addition to a boot filename, attempt
to hook the root-path as a SAN disk before booting from the specified
filename. Since the root-path may be used for non-SAN purposes
(e.g. an NFS root mount point), ignore the root-path if it contains a
URI scheme that we do not support.
Originally-implemented-by: Jarrod Johnson <jarrod.b.johnson@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Remove the concept of shutdown exit flags, and replace it with a
counter used to keep track of exposed interfaces that require devices
to remain active.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Support a new function mode "multi-function 8 Direct IO" which is used
in ESX Direct I/O configuration.
Update driver version to 3.5.0.1
Signed-off-by: Masroor Vettuparambil <masroor.vettuparambil@exar.com>
Signed-off-by: Sivakumar Subramani <sivakumar.subramani@exar.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
libflat no longer has anything to do with flat real mode; it handles
only the A20 gate. Update library name to match.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Flat real mode will have been set up as a side-effect of the
protected-mode call invoked during install_block() for .text16.early;
there is no need to do so explicitly.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Flat real mode works perfectly on real hardware, but seems to cause
problems for some hypervisors. Revert to using 16-bit protected mode
(and returning to real mode with 4GB limits, so as not to break PMM
BIOSes).
Allow the code specific to the .mrom format to continue to assume that
flat real mode works, since this format is specific to real hardware.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Most xxx_init() functions are void functions with no failure cases.
Allow pci_vpd_init() to be used in the same way. (Subsequent calls to
pci_vpd_read() etc. will fail if pci_vpd_init() fails.)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Since its implementation several years ago, no driver has used a
fragment list containing more than a single fragment. Simplify the
NVO core and the drivers that use it by removing the whole concept of
the fragment list, and using a simple (address,length) pair instead.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow functions other than realloc() to be used to reallocate DHCP
option block data, and specify the reallocation function at the time
of calling dhcpopt_init().
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The max_len field is never used, and the len field is used only by
dhcp_tx(). Remove these two fields, and perform the necessary trivial
calculation in dhcp_tx() instead.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Driver for Intel 82576 based virtual functions, based on Intel source
code available at:
http://sourceforge.net/projects/e1000 (igbvf-1.0.7)
Based on initial port from Eric Keller <ekeller@princeton.edu>.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
For IPoIB, we currently use the hardware address (i.e. the eight-byte
GUID) as the DHCP chaddr. This works, but some PXE servers (notably
Altiris RDP) refuse to respond if the chaddr field is anything other
than six bytes in length.
We already have the notion of an Ethernet-compatible link-layer
address, which is used in the iBFT (the design of which similarly
fails to account for non-Ethernet link layers). Use this as the first
preferred alternative to the actual link-layer address when
constructing the DHCP chaddr field.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The PXE debugging messages have remained pretty much unaltered since
Etherboot 5.4, and are now difficult to read in comparison to most of
the rest of iPXE.
Bring the pxe_udp debug messages up to normal iPXE standards.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Enhance the information collected by the function recorder to include
the call site and entry/exit counts. This allows fnrec.pl to produce
a call tree such as:
step (from core/getkey.c:46 = 0x17e90) {
ref_increment (from core/process.c:93 = 0x73ec) { }
net_step (from core/process.c:96 = 0x73f1) {
net_poll (from net/netdevice.c:741 = 0xbce6) {
netdev_poll (from net/netdevice.c:700 = 0xbc58) { }
netdev_rx_dequeue (from net/netdevice.c:709 = 0xbc65) { }
}
}
ref_decrement (from core/process.c:96 = 0x73f9) { }
}
Note that inlined functions are reported, confusingly, as extra calls
to the *containing* function. Minimise this confusion by adding the
attribute "no_instrument_function" to all functions declared as
inline. (Static functions that have been inlined autonomously by gcc
will still be problematic, but these are far fewer in number.)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Earlier versions of the PXE specification do not have the SubVendor_ID
and SubDevice_ID fields, and some NBPs may not provide space for them.
Avoid overwriting the contents of these fields, just in case.
This is similar to the problem with the BufferLimit field in
PXENV_GET_CACHED_INFO.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Changes were made to files where the licence text within the files
themselves confirms that the files are GPL version 2 or later.
Signed-off-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Changes were made to files where the licence text within the files
themselves confirms that the files are GPL version 2.
Signed-off-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Use the real-mode address ffff:0010 to access the linear address
0x100000, and so test whether or not the A20 gate is enabled without
requiring a switch into flat real mode (or some other addressing
mode).
This speeds up CPU mode transitions, and also avoids breaking the NBP
from IBM's Tivoli Provisioning Manager for Operating System
Deployment. This NBP makes some calls to iPXE in VM86 mode rather
than true real mode and does not correctly emulate our transition into
flat real mode.
Interestingly, Tivoli's VMM *does* allow us to switch into protected
mode (though it patches our GDT so that we execute in ring 1 rather
than ring 0). However, paging is still disabled and we have a 4GB
segment limit. Being in ring 1 does not, therefore, restrict us in
any meaningful way; this has been verified by deliberately writing
garbage over Tivoli's own GDT (at address 0x02201010) during a
nominally VM86-mode PXE API call. It's unclear precisely what
protection this VMM is supposed to be offering.
Suggested-by: Joshua Oreman <oremanj@rwcr.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some network cards automatically strip the VLAN header, providing the
VLAN tag via a side channel such as a completion queue entry. These
cards need to be able to report receive completions directly against
the relevant VLAN device.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
VLAN device names have the form "netX.Y", e.g. "net0.5" for VLAN 5 on
net0. This use of "." conflicts with the use of "." as the
hierarchical separator in settings block names, with the result that
VLAN device settings cannot be accessed by name.
It would be trivial to treat the VLAN device settings as being a child
of the trunk device settings, but this would cause the VLAN device
settings to be applied to the trunk device: for example, setting
"net0.5/ip" would then apply the IP address to both net0.5 and net0.
Fix by changing the VLAN device name to use "-" instead of ".": the
VLAN device "net0.5" is now "net0-5".
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Pass the settings block name as a parameter to register_settings(),
rather than defining it with settings_init() (and then possibly
changing it by directly manipulating settings->name).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The && and || operators should be left-associative, since that is how
they are treated in most other languages (including C and Unix
shell). For example, in the command:
dhcp net0 && goto dhcp_ok || echo No DHCP on net0
if the "dhcp net0" fails then the "echo" should be executed.
After an "exit" or a successful "goto", further commands on the same
line should never be executed. For example:
goto somewhere && echo This should never be printed
exit 0 && echo This should never be printed
exit 1 && echo This should never be printed
An "exit" should cause the current shell or script to terminate and
return the specified exit status to its caller. For example:
chain test.ipxe && echo Success || echo Failure
[in test.ipxe]
#!ipxe
exit 0
should echo "Success".
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The "shell" command allows a script to enter an interactive shell,
which is potentially useful for troubleshooting.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some newer versions of gcc (observed with a patched gcc 4.5.1) seem to
treat our offsetof() implementation as not being a compile-time
constant. Fix by using __builtin_offsetof() when available. (As with
the original offsetof() macro, this code is copied from the Linux
kernel's stddef.h.)
Reported-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Almost all FIP packets contain at most one instance of each
descriptor. A VLAN notification may contain multiple VLAN
descriptors. The FCoE specification does not provide any guidance
regarding prioritisation of VLANs, so we may choose to arbitrarily
choose the first listed VLAN.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
VLAN headers are allowed to contain a VLAN tag of zero, indicating
that the header specifies only a priority and that the packet does not
belong to any VLAN. The easiest way to handle this is to treat VLAN 0
as being a normal VLAN.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The increase in length in Fibre Channel device names causes the
"selected FCF" message to wrap beyond 80 characters. Fix by using
abbreviations where possible.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Create the Fibre Channel port only when the FCoE port has selected a
Fibre Channel Forwarder to use. This avoids the confusion of having
an FC port created for the network device on which only VLAN discovery
is performed.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow the fragment list to be omitted when calling nvo_init().
Omitting the list will cause the whole of the NVS device to be used
for NVO storage.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Expansion of the (admittedly perverse) "aaa}bbb${ccc" will currently
fail because expand_command() does not check that the closing "}"
occurs later than the opening "${".
Fix by ensuring that the most recent opening "${" is used to match
against the first *subsequent* closing "}".
Total cost of this change: -12 bytes, bringing the overall cost of
this feature to -4 bytes.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Expansion of ${${foo}} will currently fail, because the first
opening "${" will be incorrectly matched against the first closing
"}", leading to an attempt to expand the variable "${foo".
Fix by ensuring that the most recent opening "${" is used to match
against the first closing "}".
Total cost: 8 bytes. :)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow "set <variable>" to be used to set the variable to an empty
value, if permitted by the setting type. Note that some settings
backends do not differentiate between an empty value and a
non-existent value, so this may or may not be equivalent to "clear
<variable>".
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow "autoboot" to accept an optional list of network devices, and
remove the "netboot" command. This saves around 130 bytes.
The "netboot" command has existed for approximately 48 hours, so its
removal should not cause backwards compatibility issues for anyone.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The "isset" command can be used to determine whether or not a setting
is present. For example:
isset ${net0/ip} || dhcp net0 # If we have no IP address, try DHCP
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow script labels to be defined using the syntax
:<labelname>
(nothing else allowed on the line, including whitespace). Labels are
ignored during script execution, but can be used as the target of the
"goto" command. For example:
#!ipxe
goto machine_${net0/ip} || goto machine_default
# Linux kernel boot
:machine_10.0.0.101
:machine_10.0.0.102
set filename http://my.boot.server/vmlinuz
goto done
# Default configuration
:machine_default
set filename pxelinux.0
goto done
# Boot selected configuration
:done
chain ${filename}
Originally-implemented-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
Originally-implemented-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Make the "||" and "&&" operators available within iPXE commands. For
example:
dhcp net0 || set net0/ip 192.168.0.2
would attempt to acquire an IP address via DHCP, falling back to a
static address if DHCP fails.
As a side-effect, comments may now be appended to any line. For
example:
dhcp net0 || set net0/ip 192.168.0.2 # Try DHCP first, then static
Signed-off-by: Michael Brown <mcb30@ipxe.org>
These commands exist primarily for debugging and are not generally
useful, so save 137 bytes by removing them by default.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Command implementations tend to include a substantial amount of common
boilerplate code revolving around the parsing of command-line options
and arguments. This increases the size cost of each command.
Introduce an option-parsing library that abstracts out the common
operations involved in command implementations. This enables the size
of each individual command to be reduced, and also enhances
consistency between commands.
Total size of the library is 704 bytes, to be amortised across all
command implementations.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Several use cases (e.g. the UNDI API and the EFI SNP API) require
access to the raw network device receive queue, and so currently use
manual calls to netdev_poll() on a specific network device in order to
prevent received packets from being processed by the network stack.
As an alternative, provide a flag that allows receive queue processing
to be frozen on a per-device basis. When receive queue processing is
frozen, packets will be enqueued as normal, but will not be
automatically dequeued and passed up the network stack.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some network cards do not generate interrupts when operated via the
UNDI API. Allow for this by waiting for the ISR to be triggered only
if the PXE stack advertises that it supports interrupts. When the PXE
stack does not advertise interrupt support, we skip the call to
PXENV_UNDI_ISR_IN_START and just poll the device using
PXENV_UNDI_ISR_IN_PROCESS. This matches the observed behaviour of at
least one other PXE NBP (emBoot's winBoot/i), so there is a reasonable
chance of this working.
Originally-implemented-by: Muralidhar Appalla <Muralidhar.Appalla@emulex.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Provide a "hexhyp" setting type, which functions identically to the
"hex" setting type except that it uses a hyphen instead of a colon as
the byte delimiter.
For example, if ${mac} expands to "52:54:00:12:34:56", then
${mac:hexhyp} will expand to "52-54-00-12-34-56".
Originally-implemented-by: Jarrod Johnson <jarrod.b.johnson@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Fix typographical error from commit ea631f6 ("[list] Add
list_first_entry()"). The symptom was PXELINUX 3.86 causing a stack
overflow under VMware.
Tested-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
Signed-off-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow fc_ulp_decrement() to guarantee to fc_peer_decrement() that the
peer reference remains valid for the duration of the call, by ensuring
that ulp->peer remains valid while ulp is valid.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow link examination methods to safely assume that their
self-reference remains valid for the duration of the method call.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Calling a timer's expiry method may cause arbitrary consequences,
including arbitrary modifications of the list of retry timers.
list_for_each_entry_safe() guards against only deletion of the current
list entry; it provides no protection against other list
modifications. In particular, if a timer's expiry method causes the
subsequent timer in the list to be deleted, then the next loop
iteration will access a timer that may no longer exist.
This is a particularly nasty bug, since absolutely none of the
list-manipulation or reference-counting assertion checks will be
triggered. (The first assertion failure happens on the next iteration
through list_for_each_entry(), showing that the list has become
corrupted but providing no clue as to when this happened.)
Fix by stopping traversal of the list of retry timers as soon as we
hit an expired timer.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Rearrange the fields in struct memory_block (without altering
MIN_MEMBLOCK_SIZE) so that the "count" field of a reference-counted
object is left intact when the memory containing the object is freed.
This allows for the possibility of detecting reference-counting errors
such as double-freeing.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Check that the reference count is valid (i.e. non-negative) on each
call to ref_get() and ref_put(), using an assert() at the point of
use.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
free_memblock() currently uses list_for_each_entry() to iterate over
the free list, and may delete an entry over which it iterates. While
there is no way that the deleted list entry could be overwritten
before we reference it, this does rely upon list_del() leaving the
"next" pointer intact, which is not guaranteed. Discovered while
tracking down a list-corruption bug (as a result of having modified
list_del() to sanitise the deleted list entry).
Fix by using list_for_each_entry_safe().
Signed-off-by: Michael Brown <mcb30@ipxe.org>
There are several points in the iPXE codebase where
list_for_each_entry() is (ab)used to extract only the first entry from
a list. Add a macro list_first_entry() to make this code easier to
read.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Functions that instantiate objects generally own one reference to the
object being created. The error paths must therefore usually call
ref_put() to release this reference.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
For some install-to-SAN scenarios, the OS needs to be able to reboot
to reread the partition table. On this second boot attempt, the SAN
disk will not be empty and so iPXE will attempt to boot from it,
rather than falling back to the OS' installation media.
Work around this problem by introducing the "skip-san-boot" option,
similar in spirit to "keep-san".
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Improve the visibility of error messages by removing the redundant
final printing of the URL being booted.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some SCSI targets (observed with an EMC CLARiiON Fibre Channel target)
will not respond to commands correctly until a TEST UNIT READY has
been issued. In particular, a READ CAPACITY (10) command will return
with a success status, but no capacity data.
Fix by issuing a TEST UNIT READY command automatically, and delaying
further SCSI commands until the TEST UNIT READY has succeeded.
Reported-by: Hadar Hen Zion <hadarh@mellanox.co.il>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The FCP command reference number is intended to be used for
controlling precise delivery of FCP commands, rather than being an
essentially arbitrary tag field (as with iSCSI and SRP).
Use the Fibre Channel local exchange ID as the tag for FCP commands,
instead of the FCP command reference. The local exchange ID does not
appear within the FCP IU itself, but does appear within the FC frame
header; debug traces can therefore still be correlated with packet
captures.
Reported-by: Hadar Hen Zion <hadarh@mellanox.co.il>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Users tend to gloss over cryptic-looking error messages such as
"Boot failed: Exec format error (Error 0x2e852001)"
In particular, users tend not to report the error number, which is the
single most useful piece of diagnostic information in an iPXE error
message. Try replacing the "Error 0x2e852001" portion with a URL,
giving
"Boot failed: Exec format error (http://ipxe.org/2e852001)"
in the hope that users will, upon seeing something that is
recognisably a URL, try viewing it in a web browser. Such users will
be greeted by a web page containing a more detailed description of the
error (automatically generated from the einfo text), including links
to each line of code that might generate the error, and a section for
additional user-contributed notes. At the time of writing, a user who
visits http://ipxe.org/2e852001 would see a note saying
"This error usually indicates that the SAN disk is empty, and does
not yet contain a bootable operating system."
which may be more useful than "Exec format error (Error 0x2e852001)".
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Commit 5f4ab0d ("[iscsi] Randomise a portion of the ISID to force new
session instantiation") introduced a regression by randomising the
ISID on each call to iscsi_start_login(), which may be called more
than once per connection, rather than on each call to
iscsi_open_connection(), which is guaranteed to be called only once
per connection. This is incorrect behaviour that causes our
connection to be rejected by some iSCSI targets (observed with a
COMSTAR target under OpenSolaris).
Fix by generating the ISID in iscsi_open_connection(), and storing the
randomised ISID as part of the session state.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The config/local/*.h files are expected to be empty in most cases.
This should not cause a licence determination to fail.
Fix by ignoring config/local/*.h for licensing purposes.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
When a connection to an iSCSI target is broken without gracefully
closing the TCP socket, a subsequent connection attempt may fail
because the target believes that we are attempting session
reinstatement (see RFC3720 section 5.3.1). This has been observed
using the Microsoft iSCSI target.
Section 9.1.1 of RFC3720 states that initiators should use a stable
ISID, however section 5.3.1 shows that the only way to explicitly
request that a new session be created is to use a new ISID.
Fix by randomising the "qualifier" portion of the ISID.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
We currently set both the FP and SP bits in our FIP FLOGI, to allow
the FCF the choice of selecting either a fabric-provided or a server-
provided MAC address. This complies with the FCoE specification, but
has been observed to result in an FLOGI rejection from some FCFs.
Fix by recording whether or not the FCF supports SPMA, and requesting
only one of FPMA or SPMA in our FIP FLOGI. We choose to prefer SPMA
where available, because many iPXE drivers will not be able to receive
unicast packets sent to a non-default MAC address.
Reported-by: Hadar Hen Zion <hadarh@mellanox.co.il>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
When using binutils 2.20, it seems to be necessary to add -ldl to link
against -lbfd.
Reported-by: Duane Voth <duanev@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
(Ab)use the "secs" field in transmitted DHCP packets to convey
metadata about the DHCP session state. In particular:
bit 0 represents the receipt of a ProxyDHCPOFFER
bit 1 represents the receipt of a DHCPOFFER
bits 2+ represent the transmitted packet sequence number
This allows some relevant information about the internal state of the
DHCP session to be read out from a packet trace from a non-debug build
of iPXE. It also potentially allows replies to be correlated to their
requests (for servers that copy the "secs" field from request to
reply).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Some ProxyDHCP implementations seem to violate the PXE specification
by expecting the client to retain options from the ProxyDHCPOFFER
rather than issuing a separate ProxyDHCPREQUEST.
Work around such broken clients by retaining the ProxyDHCPOFFER
packet, and proceeding to a ProxyDHCPREQUEST only if the
ProxyDHCPOFFER does not already contain PXE options.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
A recent patch series breaks compatibility with various common DHCP
implementations.
Revert "[dhcp] Don't consider invalid offers to be duplicates"
This reverts commit 905ea56753.
Revert "[dhcp] Honor PXEBS_SKIP option in discovery control"
This reverts commit 620b98ee4b.
Revert "[dhcp] Keep multiple DHCP offers received, and use them intelligently"
This reverts commit 5efc2fcb60.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
FCoE requires us to be able to receive unicast packets for multiple
addresses. Support this by operating in promiscuous mode.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The port ID assigned by the FLOGI response is implicit in the
destination ID used for the response (which will differ from the
source ID used for the corresponding request).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
FCoE requires the use of fabric-provided MAC addresses, which breaks
the assumption that the net device's MAC address is implicitly the
source address for net_tx() and the (unicast) destination address for
net_rx().
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The disk signature is used by some OSes (notably Windows) to identify
the boot disk, so it's useful debugging information to have.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Error numbers are signed ints. EUNIQ() should not allow implicit type
promotion based on the supplied error diambiguator, because this
causes problems with statements such as
rc = ( condition ? -EUNIQ ( EBASE, disambiguator ) : -EBASE );
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Support the extensions mandated by EDD 4.0, including:
o the ability to specify a flat physical address in a disk address
packet,
o the ability to specify a sector count greater than 127 in a disk
address packet,
o support for all functions within the Fixed Disk Access and EDD
Support subsets,
o the ability to describe a device using EDD Device Path Information.
This implementation is based on draft revision 3 of the EDD 4.0
specification, with reference to the EDD 3.0 specification. It is
possible that this implementation may need to change in order to
conform to the final published EDD 4.0 specification.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Avoid a tedious timeout delay when attempting to issue a command over
a network device that has been closed.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow multiple, space separated values (such as kernel arguments,
passed via DHCP) to be assigned to an identifier using the "set"
command.
Originally-implemented-by: Aaron Brooks <aaron@brooks1.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add PRM structures to support Hermon Ethernet devices.
Signed-off-by: Itay Gazit <itaygazit@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Unlike Arbel, port parameters must be applied via a separate call to
SET_PORT, rather than as parameters to INIT_PORT.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The response to a received FLOGI should probably be sent to the peer
port ID assigned as a result of the WWPN comparison.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Mapping a single page at a time causes a several-second delay at
device initialisation time. Reduce this by mapping multiple pages at
a time, using the largest block sizes possible given the alignment
constraints.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Mapping a single page at a time causes a several-second delay at
device initialisation time. Reduce this by mapping multiple pages at
a time, using the largest block sizes possible given the alignment
constraints.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Use individual page mappings rather than a single whole-region
mapping, to avoid the waste of memory that occurs due to the
constraint that each mapped block must be aligned on its own size.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Backport some changes from the Hermon driver to the Arbel driver.
Specifically:
o Rename reserved_lkey to lkey
o Add arbel_rate() to calculate transmission rates
o Structure code to allow for addition of RC queue pairs
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Reduce the amount of ICM space required by choosing to order the
various allocations in approximately descending order of alignment
requirements.
This saves approximately 512kB of host memory.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The current method for ICM allocation exactly matches the addresses
chosen by the old Etherboot driver, but does not match the
specification. Some ICM tables (notably the queue pair context table)
therefore end up incorrectly aligned.
Fix by performing allocations as per the specification.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Improve the utility of debugging messages by including the relevant
port number, queue number (QPN, CQN, EQN), work queue entry (WQE)
number, and physical addresses wherever applicable.
Add arbel_dump_cqctx() for dumping a completion queue context and
arbel_dump_qpctx() for dumping a queue pair context.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This is a backport of commit 0b1222f ("[hermon] Randomise the
high-order bits of queue pair numbers") to the Arbel driver.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This is a backport of commit cd5a213 ("[hermon] Allow software GMA to
receive packets destined for QP1") to the Arbel driver.
This patch includes a correction to a bug in the autogenerated
hardware description header file.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Only port state change events are currently mapped to our event queue,
since those are the only events we are prepared to handle. This
ignores a potentially useful source of diagnostic information in the
case of unexpected failures.
Fix by mapping all events to the event queue; a build with debugging
enabled will therefore at least dump the raw content of the unexpected
events.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Only port state change events are currently mapped to our event queue,
since those are the only events we are prepared to handle. This
ignores a potentially useful source of diagnostic information in the
case of unexpected failures.
Fix by mapping all events to the event queue; a build with debugging
enabled will therefore at least dump the raw content of the unexpected
events.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE currently uses the first port's port GUID as the node GUID,
rather than using the (possibly distinct) real node GUID. This can
confuse opensm during the handover to a loaded OS: it thinks the port
already belongs to a different node and so discards our port
information with a warning message about duplicate ports. Everything
is picked up correctly on the second subnet sweep, after opensm has
established that the "old" node no longer exists, but this can delay
link-up unnecessarily by several seconds.
Fix by using the real node GUID.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
No event is generated upon reaching INIT, so we must poll separately
for link state changes while we remain DOWN.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
No event is generated upon reaching INIT, so we must poll separately
for link state changes while we remain DOWN.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
ib_smc_update() potentially updates the Infiniband port state, and so
should almost always be followed by a call to ib_link_state_changed().
The one exception is the call made to ib_smc_update() before the
device is registered.
Fix by removing explicit calls to ib_link_state_changed() from drivers
using ib_smc_update(), including a call to ib_link_state_changed()
within ib_smc_update(), and creating a separate ib_smc_init() for use
prior to device registration.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The sense key gives a first idea of what the problem might be, and so
is potentially useful in diagnosing problems in a non-debug build.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
It seems as though several drivers neglect to strip the Ethernet CRC,
which will cause the FCoE footer to be misplaced and result
(coincidentally) in an "invalid CRC" error from FCoE.
Add a human-visible message indicating this, to aid in diagnosis.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Errors generated by the network layer in response to received packets
are liable to be lost, since nothing systematically records these
errors and often the packets do not propagate far enough through the
stack to impact upon user-visible processes.
Improve this situation by recording network-layer errors in the
network device statistics.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The Fibre Channel Protocol provides a mechanism for transporting SCSI
commands via a Fibre Channel fabric.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add support for Fibre Channel ports, peers, and upper-layer protocols,
and for Fibre Channel extended link services.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The block device interface used in gPXE predates the invention of even
the old gPXE data-transfer interface, let alone the current iPXE
generic asynchronous interface mechanism. Bring this old code up to
date, with the following benefits:
o Block device commands can be cancelled by the requestor. The INT 13
layer uses this to provide a global timeout on all INT 13 calls,
with the result that an unexpected passive failure mode (such as
an iSCSI target ACKing the request but never sending a response)
will lead to a timeout that gets reported back to the INT 13 user,
rather than simply freezing the system.
o INT 13,00 (reset drive) is now able to reset the underlying block
device. INT 13 users, such as DOS, that use INT 13,00 as a method
for error recovery now have a chance of recovering.
o All block device commands are tagged, with a numerical tag that
will show up in debugging output and in packet captures; this will
allow easier interpretation of bug reports that include both
sources of information.
o The extremely ugly hacks used to generate the boot firmware tables
have been eradicated and replaced with a generic acpi_describe()
method (exploiting the ability of iPXE interfaces to pass through
methods to an underlying interface). The ACPI tables are now
built in a shared data block within .bss16, rather than each
requiring dedicated space in .data16.
o The architecture-independent concept of a SAN device has been
exposed to the iPXE core through the sanboot API, which provides
calls to hook, unhook, boot, and describe SAN devices. This
allows for much more flexible usage patterns (such as hooking an
empty SAN device and then running an OS installer via TFTP).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Doorbell records are currently embedded within the completion queue
and receive work queue strucures, which are allocated using zalloc()
and so have an alignment guarantee of only sizeof(void*), i.e. four
bytes. This is sufficient for the receive work queue, but not for the
completion queue, which requires an alignment guarantee of eight
bytes.
Though not guaranteed, it so happens that zalloc() will always return
a pointer that is exactly four bytes above a sixteen-byte boundary.
The completion queue doorbell record is therefore always misaligned,
and the value passed to the hardware via SW2HW_CQ is actually always
pointing to the page_offset value within the MTT descriptor (which
directly precedes the inline doorbell record). Provided that the page
offset is greater than 0x100, this looks to the hardware like an
update_ci value of greater than 0x010000 (taking into account
endianness differences), and so the hardware will happily deliver more
than 0x010000 completions before stopping. Hence this problem is
rarely observable.
Fix by allocating the doorbell records separately and using the
correct alignment constraints.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Give completion queues a chance to deliver exception events by
programming in the number of our event queue (currently used only for
port state changes).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Improve the utility of debugging messages by including the relevant
port number, queue number (QPN, CQN, EQN), work queue entry (WQE)
number, and physical addresses wherever applicable.
Add hermon_dump_cqctx() for dumping a completion queue context, and
hermon_fill_nop_send_wqe() for inserting NOPs into send work queues.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
DBG_ENABLE() and DBG_DISABLE() are currently constrained to enabling
and disabling only debug levels that are compiled in for the current
object. For example, a DBG_ENABLE(DBGLVL_EXTRA) in foo.c will not be
able to affect output from other objects at DBGLVL_EXTRA unless foo.c
is itself compiled with DBGLVL_EXTRA enabled.
Partially fix by removing this unnecessary constraint. (Note that it
is still necessary for at least one debug level to be compiled in for
the object invoking DBG_ENABLE()/DBG_DISABLE().)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
An attempt to transmit a packet of 8192 bytes or larger will collide
with the status bits in the TX descriptor. This gives the appearance
of the network card's transmit data path having just suddenly stopped
responding; iPXE is waiting for the card to report a TX completion
but, because of the status bit collision, the card thinks that the
descriptor has not yet been written.
Fix by explicitly checking for oversized packets in rtl_transmit().
Discovered during Fibre Channel over Ethernet testing, and debugged by
using gdb to examine the state of the emulated rtl8139 card in qemu.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
xfer_window_changed() can be used to notify peers that an interface is
now ready to accept data. This can potentially be used to eliminate
the need for wasteful processes that simply poll xfer_window() until
the window becomes non-zero.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Replace the explicit calls from the Infiniband core to the IPoIB layer
with the general concept of an Infiniband upper-layer driver
(analogous to a PCI driver) which can create arbitrary devices on top
of Infiniband devices.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add the concept of a network upper-layer driver, which can create
arbitrary devices on top of network devices.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The rtl8139 driver includes the Ethernet CRC within the received
packet. All current protocols ignore trailing garbage, but FCoE
requires the frame length to be correct (since the FCoE footer
position is calculated from the end of the packet), so fix the driver
to strip out the CRC.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Guarantee that a retry timer cannot go out of scope while the timer is
running, and provide a guarantee to the expiry callback that the timer
will remain in scope during the entire callback (similar to the
guarantee provided to interface methods).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE has never supported SEEK_END; the usage of "whence" offers only
the options of SEEK_SET and SEEK_CUR and so is effectively a boolean
flag. Further flags will be required to support additional metadata
required by the Fibre Channel network model, so repurpose the "whence"
field as a generic "flags" field.
xfer_seek() has always been used with SEEK_SET, so remove the "whence"
field altogether from its argument list.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add PCI ID 8086:27dc to the eepro100 driver.
Reported-by: Cédric Delmas <c.delmas@akka.eu>
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Marty Connor <mdc@etherboot.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Declarations without the accompanying __table_entry cause misalignment
of the table entries when using gcc 4.5. Fix by adding the
appropriate __table_entry macro or (where possible) by removing
unnecessary forward declarations.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Even with the noinline specifier added by commit 1a260f8, gcc may skip
calls to non-inlinable functions that it knows have no side
effects. This caused the get_cached_dhcpack() call in start_dhcp(),
the weak stub of which has no code in its body, to be removed,
preventing cached DHCP from working.
Fix by adding a __keepme macro to compiler.h expanding to asm(""), as
recommended by gcc's info page, and using it in the weak stub for
get_cached_dhcpack().
Reported-by: Aaron Brooks <aaron@brooks1.net>
Tested-by: Aaron Brooks <aaron@brooks1.net>
Signed-off-by: Joshua Oreman <oremanj@rwcr.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add the tap driver that can be used like:
$ ./ipxe.linux --net tap,if=tap0,mac=00:0c:29:c5:39:a1
The if setting is mandatory.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Support qemu-like arguments for network setup:
--net driver_name[,setting=value]*
and global settings:
--settings setting=value[,setting=value]*
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add the base to build linux drivers and the linux UI code on. UI
fills device requests, which are later walked over by the linux
root_driver and delegated to specific linux drivers.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
There exists an smbios userspace library so implementing this is
probably possible, but doesn't seem really important to have in
userspace. Hence provide a dummy implementation returning an error.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add user access API for linux.
On linux userspace virtual == user == phys addresses. Physical
addresses also being the same is wrong, but there is no general way of
converting userspace addresses to physical as what appears to be
contiguous in userspace is physically fragmented. Currently only the
DMA memory is special-cased, but its conversion to bus addresses is
done in phys_to_bus. This is known to break virtio as it is passing
phys addresses to the virtual device.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add linux console using stdin/out. Configure the attached terminal for
readline use.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add makefiles, ld scripts and default config for linux platform for
both i386 and x86_64.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Don't implement strtoul() on top of strtoull() as strtoull() is much
bigger and only used on linux currently. Instead refactor most of the
logic out of strtoul() into static inlines and reuse that. Also put it
in a separate object so it won't get linked in.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
alloc_memblock() and free_memblock() are internal.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The everything target builds multiple image types on each supported
arch/platform combination.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
When building multiple targets per BIN with multiple jobs, for
example:
make -j16 bin-i386-efi/ipxe.efi{,drv,rom} bin-x86_64-efi/ipxe.efi{,drv,rom}
we would invoke a make subprocess for each goal in parallel resulting
in multiple makes running in a single BIN directory. Fix by grouping
goals per BIN directory and invoking only one make per BIN. It is
both safer and faster.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
pcbios specific get_memmap() is used by the b44 driver making
all-drivers builds fail on other platforms. Move it to the I/O API
group and provide a dummy implementation on EFI.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The "dhcp" command now accepts a list of interfaces to try until one
succeeds. For example:
iPXE> dhcp net0 net1 net2
If no interfaces are specified, all interfaces will be tried.
Note that interfaces that fail to DHCP are closed in order to avoid
memory exhaustion. This behavior differs from the previous "dhcp"
command implementation but should not affect any existing scripts
since a "dhcp" command failure would in any case cause the script to
abort.
Originally-implemented-by: Lars Kellogg-Stedman <lars@oddbit.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
COM32 binaries generally expect to run with interrupts
enabled. Syslinux does so, and COM32 programs will execute cli/sti
pairs when running a critical section, to provide mutual exclusion
against BIOS interrupt handlers. Previously, under iPXE, the IDT was
not valid, so any interrupt (e.g. a timer tick) would generally cause
the machine to triple fault.
This change introduces code to:
- Create a valid IDT at the same location that syslinux uses
- Create an "interrupt jump buffer", which contains small pieces of
code that simply record the vector number and jump to a common
handler
- Thunk down to real mode and execute the BIOS's interrupt handler
whenever an interrupt is received in a COM32 program
- Switch IDTs and enable/disable interrupts when context switching to
and from COM32 binaries
Testing done:
- Booted VMware ESX using a COM32 multiboot loader (mboot.c32)
- Built with GDBSERIAL enabled, and tested breakpoints on int22 and
com32_irq
- Put the following code in a COM32 program:
asm volatile ( "sti" );
while ( 1 );
Before this change, the machine would triple fault
immediately. After this change, it hangs as expected. Under Bochs,
it is possible to see the interrupt handler run, and the current
time in the BIOS data area gets incremented.
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This patch adds a native iPXE forcedeth driver and removes the legacy
Etherboot forcedeth driver. It supports 40 different chips, compared
to the original 14.
It has been tested on a NIC with an CK804 Ethernet Controller, and the
results of downloading 5 100mb images in a row have been:
12/11/11/11/11 seconds; booting DSL using pxelinux also succeeded. The
driver has also been tested by chaining undionly.kpxe and it worked.
Signed-off-by: Andrei Faur <da3drus@gmail.com>
Tested-by: Andrei Faur <da3drus@gmail.com>
Tested-by: Guo-Fu Tseng <cooldavid@cooldavid.org>
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
An assembly version of memswap() is in an x86 word-length-agnostic
header file, but it used 32-bit registers to store pointers, leading
to memory errors responding to ARP queries on 64-bit systems.
Signed-off-by: Joshua Oreman <oremanj@rwcr.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
When we received an encrypted packet, after replacing it with its
decrypted version and freeing the encrypted original, we would
continue to look at the header of the now-freed original packet. Fix
by moving the header pointer to point at the decrypted packet instead.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The workhorse function for detecting 802.11 security was still named
_sec80211_detect(), a holdover from the old style of weak function
handling, with the result that all networks would be identified as
"unknown".
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Currently, if elf2efi.c is compiled using a 32-bit HOST_CC, then the
resulting elf2efi64 binary will generate 32-bit EFI binaries instead
of 64-bit EFI binaries.
The problem is that elf2efi.c uses the MDE_CPU_* definitions to decide
whether to output a 32-bit or 64-bit PE binary. However, MDE_CPU_*
gets defined in ProcessorBind.h, depending on the compiler's target
architecture. Overriding them on the command line doesn't work in the
expected way, and you can end up in cases where both MDE_CPU_IA32 and
MDE_CPU_X64 are defined.
Fix by using a separate definition, EFI_TARGET_IA32/EFI_TARGET_X64,
which is specified only on the command line.
Signed-off-by: Geoff Lywood <glywood@vmware.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Allow packets in the receive queue to be discarded in order to free up
memory. This avoids a potential deadlock condition in which the
missing packet can never be received because the receive queue is
occupying all of the memory available for further RX buffers.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add a facility allowing cached data to be discarded in order to
satisfy memory allocations that would otherwise fail.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Maintain a queue of received packets, so that lost packets need not
result in retransmission of the entire TCP window.
Increase the TCP window to 8kB, in order that we can potentially
transmit enough duplicate ACKs to trigger Fast Retransmission at the
sender.
Using a 10MB HTTP download in qemu-kvm with an artificial drop rate of
1 in 64 packets, this reduces the download time from around 26s to
around 4s.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Setting NETDEV_DISCARD_RATE to a non-zero value will cause one in
every NETDEV_DISCARD_RATE packets to be discarded at random on both
the transmit and receive datapaths, allowing the robustness of
upper-layer network protocols to be tested even in simulation
environments that provide wholly reliable packet transmission.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This patch adds a native iPXE virtio-net driver and removes the legacy
Etherboot virtio-net driver. The main reasons for doing this are:
1. Multiple virtio-net NICs are now supported by iPXE. The legacy
driver kept global state and caused issues in virtual machines with
more than one virtio-net device.
2. Faster downloads. The native iPXE driver downloads 100 MB over
HTTP in 12s, the legacy Etherboot driver in 37s. This simple
benchmark uses KVM with tap networking and the Python
SimpleHTTPServer both running on the same host.
Changes to core virtio code reduce vring descriptors to 256 (QEMU uses
128 for virtio-blk and 256 for virtio-net) and change the opaque token
from u16 to void*. Lowering the descriptor count reduces memory
consumption. The void* opaque token change makes driver code simpler.
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
The DHCP settings registered as a child of the netdevice settings are
not unregistered anywhere. This prevents the netdevice from being
freed on shutdown.
Fix by automatically unregistering any child settings when the parent
settings are unregistered.
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE currently forces sending (i.e. sends a pure ACK even in the
absence of fresh data to send) only in response to packets that
consume sequence space or that lie outside of the receive window.
This ignores the possibility that a previous ACK was not actually sent
(due to, for example, the retransmission timer running).
This does not cause incorrect behaviour, but does cause unnecessary
retransmissions from our peer. For example:
1. Peer sends final data packet (ack 106 seq 521..523)
2. We send FIN (seq 106..107 ack 523)
3. Peer sends FIN (ack 106 seq 523..524)
4. We send nothing since retransmission timer is running for our FIN
5. Peer ACKs our FIN (ack 107 seq 524..524)
6. We send nothing since this packet consumes no sequence space
7. Peer retransmits FIN (ack 107 seq 523..524)
8. We ACK peer's FIN (seq 107..107 ack 524)
What should happen at step (6) is that we should ACK the peer's FIN,
since we can deduce that we have never sent this ACK.
Fix by maintaining an "ACK pending" flag that is set whenever we are
made aware that our peer needs an ACK (whether by consuming sequence
space or by sending a packet that appears out of order), and is
cleared only when the ACK packet has been transmitted.
Reported-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
