Michael Brown [Fri, 15 Jul 2011 17:48:46 +0000 (18:48 +0100)]
[netdevice] Allow link layer to report broadcast/multicast packets via pull()
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.
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.
Thomas Miletich [Sun, 10 Jul 2011 15:47:09 +0000 (17:47 +0200)]
[igb] Remove __BIG_ENDIAN conditional
Reported-by: Stefan Hajnoczi <stefanha@gmail.com> Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown [Wed, 29 Jun 2011 13:49:18 +0000 (14:49 +0100)]
[iscsi] Avoid duplicate calls to iscsi_tx_done()
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xfer_window_changed(), so it is no longer valid to assume that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.
Michael Brown [Wed, 29 Jun 2011 10:42:07 +0000 (11:42 +0100)]
[build] Avoid using -ffunction-sections on some older versions of gcc
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>
Michael Brown [Mon, 27 Jun 2011 17:27:28 +0000 (18:27 +0100)]
[http] Support read-only HTTP block devices
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:
Michael Brown [Fri, 24 Jun 2011 15:51:31 +0000 (16:51 +0100)]
[hw] Eliminate polling while waiting for window to open
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.
Michael Brown [Fri, 24 Jun 2011 13:18:48 +0000 (14:18 +0100)]
[process] Add support for one-shot processes
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.
Michael Brown [Fri, 24 Jun 2011 13:14:41 +0000 (14:14 +0100)]
[process] Pass containing object pointer to process step() methods
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.
Michael Brown [Wed, 22 Jun 2011 15:40:13 +0000 (16:40 +0100)]
[xfer] Send xfer_window_changed() after xfer_vredirect()
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.
Michael Brown [Fri, 24 Jun 2011 11:51:45 +0000 (12:51 +0100)]
[ftp] Remove redundant ftp_data_deliver() method
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.
Michael Brown [Tue, 28 Jun 2011 09:21:30 +0000 (10:21 +0100)]
[ipv4] Record ARP resolution errors
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>
Michael Brown [Tue, 17 May 2011 21:48:52 +0000 (22:48 +0100)]
[romprefix] Force PnP header to a 16-byte boundary for IBM BIOSes
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.
Michael Brown [Tue, 17 May 2011 14:35:23 +0000 (15:35 +0100)]
[romprefix] Do not fall back to hooking INT19 by default
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.
Michael Brown [Tue, 17 May 2011 14:27:47 +0000 (15:27 +0100)]
[romprefix] Remove special treatment for IBM BIOSes
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.
Michael Brown [Thu, 5 May 2011 17:02:44 +0000 (18:02 +0100)]
[ipv4] Include network device metadata in packet traces
(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.
Michael Brown [Thu, 5 May 2011 14:32:34 +0000 (15:32 +0100)]
[http] Support chunked transfer encoding
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.
Michael Brown [Wed, 4 May 2011 11:04:14 +0000 (12:04 +0100)]
[bofm] Report {slot,port} to {bus:dev.fn,mport} mapping on newer BOFM builds
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.
Michael Brown [Wed, 4 May 2011 09:04:43 +0000 (10:04 +0100)]
[romprefix] Attempt to gracefully handle semi-PnP IBM BIOSes
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.
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>
Michael Brown [Fri, 22 Apr 2011 22:31:25 +0000 (23:31 +0100)]
[undi] Assume that interrupts are not supported if IRQ=0
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.
Michael Brown [Sat, 9 Apr 2011 22:34:34 +0000 (23:34 +0100)]
[build] Run parserom.pl only on potential driver files
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%.
Michael Brown [Fri, 8 Apr 2011 02:19:06 +0000 (03:19 +0100)]
[cmdline] Simplify "isset" command
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.
Michael Brown [Thu, 7 Apr 2011 12:53:28 +0000 (13:53 +0100)]
[hermon] Work around missing mport support in current BOFM implementations
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.
Michael Brown [Tue, 5 Apr 2011 13:59:27 +0000 (14:59 +0100)]
[build] Refuse to attempt building with the GNU gold linker
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>
Michael Brown [Sat, 2 Apr 2011 23:37:27 +0000 (00:37 +0100)]
[tcp] Update ts_recent whenever window is advanced
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>
Michael Brown [Fri, 1 Apr 2011 19:07:17 +0000 (20:07 +0100)]
[cmdline] Fix "isset" command
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>
Michael Brown [Wed, 30 Mar 2011 14:57:33 +0000 (15:57 +0100)]
[build] Avoid generating ROMs with "match-any" vendor or device IDs
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.
Michael Brown [Wed, 30 Mar 2011 14:49:00 +0000 (15:49 +0100)]
[build] Include only one copy of each ROM in "make allroms"
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>
Michael Brown [Wed, 30 Mar 2011 00:34:51 +0000 (01:34 +0100)]
[bofm] Use BOFM protocol version 2 if available
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.
Michael Brown [Tue, 29 Mar 2011 23:33:48 +0000 (00:33 +0100)]
[forcedeth] Never change the NVREG_TRANSMITPOLL_MAC_ADDR_REV flag
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>
Michael Brown [Tue, 29 Mar 2011 20:55:04 +0000 (21:55 +0100)]
[forcedeth] Remove software unicast MAC address filter
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>
Michael Brown [Mon, 28 Mar 2011 17:48:48 +0000 (18:48 +0100)]
[main] Add the "scriptlet" setting
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>
Michael Brown [Mon, 28 Mar 2011 15:32:30 +0000 (16:32 +0100)]
[cmdline] Allow ";" as an unconditional command separator
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.
Thomas Miletich [Mon, 28 Mar 2011 12:43:31 +0000 (14:43 +0200)]
[linux] Avoid unused-but-set variable warning in gcc 4.6
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>
Thomas Miletich [Mon, 28 Mar 2011 12:48:59 +0000 (14:48 +0200)]
[forcedeth] Avoid unused-but-set variable warning in gcc 4.6
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>
Michael Brown [Mon, 28 Mar 2011 00:05:40 +0000 (01:05 +0100)]
[exeprefix] Add .exe prefix
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.)
Michael Brown [Sun, 27 Mar 2011 23:55:15 +0000 (00:55 +0100)]
[prefix] Avoid using base memory for temporary decompression area
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.
projects / thirdparty / ipxe.git / log
