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* [tables] Add table_index()Michael Brown2010-09-031-0/+25
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [xfer] Add xfer_deliver_raw_meta()Michael Brown2010-09-032-5/+22
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [xfer] Generalise metadata "whence" field to "flags" fieldMichael Brown2010-09-038-40/+30Star
| | | | | | | | | | | | | 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>
* [eepro100] Add new PCI ID 8086:27dcMarty Connor2010-09-031-0/+1
| | | | | | | | | 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>
* [build] Fix misaligned table entries when using gcc 4.5Piotr Jaroszyński2010-08-2014-26/+17Star
| | | | | | | | | | 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>
* [compiler] Prevent empty weak function stubs from being removedJoshua Oreman2010-08-192-1/+9
| | | | | | | | | | | | | | | | | 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>
* [build] Add tap.linux to "make everything"Michael Brown2010-08-191-1/+2
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [linux] Add the tap driverPiotr Jaroszyński2010-08-194-0/+257
| | | | | | | | | 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>
* [linux] Add command line argumentsPiotr Jaroszyński2010-08-194-0/+227
| | | | | | | | | | | 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>
* [linux] Add device and driver modelPiotr Jaroszyński2010-08-194-0/+298
| | | | | | | | | 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>
* [linux] Add empty smbiosPiotr Jaroszyński2010-08-195-0/+58
| | | | | | | | | 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>
* [linux] Add napPiotr Jaroszyński2010-08-194-0/+60
| | | | | Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [linux] Add umallocPiotr Jaroszyński2010-08-194-0/+146
| | | | | | | Add umalloc API. Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [linux] Add uaccessPiotr Jaroszyński2010-08-194-0/+144
| | | | | | | | | | | | | | | 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>
* [linux] Add timerPiotr Jaroszyński2010-08-194-0/+100
| | | | | | | Add linux timer API. Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [linux] Add consolePiotr Jaroszyński2010-08-194-1/+152
| | | | | | | | 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>
* [linux] Add most of the linux apiPiotr Jaroszyński2010-08-192-0/+283
| | | | | Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [linux] Add linux_syscallPiotr Jaroszyński2010-08-192-0/+78
| | | | | | | Add linux_syscall for both i386 and x86_64. Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [linux] Add linux api headersPiotr Jaroszyński2010-08-194-0/+90
| | | | | Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [linux] Add linuxprefixPiotr Jaroszyński2010-08-192-0/+47
| | | | | | | Add a minimal _start required to run main. Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [dhcp] Use i386-pcbios DHCP options on linuxPiotr Jaroszyński2010-08-191-0/+36
| | | | | Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [linux] Add linux platform skeletonPiotr Jaroszyński2010-08-197-2/+239
| | | | | | | | 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>
* [libc] Add strtoull()Piotr Jaroszyński2010-08-193-22/+90
| | | | | | | | | | 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>
* [mtnic] Switch to malloc_dma() and free_dma()Piotr Jaroszyński2010-08-171-29/+29
| | | | | | | alloc_memblock() and free_memblock() are internal. Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [libc] Add isxdigit()Piotr Jaroszyński2010-08-171-0/+1
| | | | | Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [settings] Export find_setting()Piotr Jaroszyński2010-08-172-1/+2
| | | | | Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [build] Provide %.fd0 build targets only for pcbiosMichael Brown2010-08-173-15/+12Star
| | | | | Originally-fixed-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [build] Add everything targetPiotr Jaroszyński2010-08-161-2/+16
| | | | | | | | | 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>
* [build] Properly handle multiple goals per BIN directoryPiotr Jaroszyński2010-08-162-6/+17
| | | | | | | | | | | | | | | | 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>
* [build] Build pcbios specific drivers only on pcbiosPiotr Jaroszyński2010-08-162-2/+4
| | | | | Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [ioapi] Move get_memmap() to the I/O API groupPiotr Jaroszyński2010-08-1613-47/+51
| | | | | | | | | 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>
* [dhcp] Allow multiple interfaces in dhcp commandMichael Brown2010-08-161-22/+56
| | | | | | | | | | | | | | | | | | 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>
* [comboot] Run com32 programs with a valid IDTGeoff Lywood2010-08-014-6/+138
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [forcedeth] Replace driver with native iPXE driverAndrei Faur2010-08-012-1230/+2375
| | | | | | | | | | | | | | | | | 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>
* [string] Use 64-bit registers in assembly memswap() on x86_64Joshua Oreman2010-08-011-4/+4
| | | | | | | | | 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>
* [802.11] Fix a use-after-freeJoshua Oreman2010-08-011-0/+1
| | | | | | | | | 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>
* [802.11] Use correct name for sec80211_detect()Joshua Oreman2010-08-011-3/+3
| | | | | | | | | 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>
* [tcp] Fix a 64bit compile time errorPiotr Jaroszyński2010-07-221-1/+1
| | | | | Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [efi] Fix the 32-bit version of elf2efi64Geoff Lywood2010-07-212-12/+12
| | | | | | | | | | | | | | | | | | | 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>
* [tcp] Allow out-of-order receive queue to be discardedMichael Brown2010-07-212-3/+50
| | | | | | | | | 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>
* [malloc] Add cache discard mechanismMichael Brown2010-07-212-46/+85
| | | | | | | 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>
* [tcp] Handle out-of-order received packetsMichael Brown2010-07-212-35/+180
| | | | | | | | | | | | | | | 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>
* [netdevice] Provide a test mechanism for discarding packets at randomMichael Brown2010-07-202-1/+20
| | | | | | | | | | 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>
* [virtio] Replace virtio-net with native iPXE driverStefan Hajnoczi2010-07-175-238/+350
| | | | | | | | | | | | | | | | | | | | | | 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>
* [settings] Unregister the children when unregistering the parentPiotr Jaroszyński2010-07-151-1/+8
| | | | | | | | | | | | 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>
* [tcp] Treat ACKs as sent only when successfully transmittedMichael Brown2010-07-151-21/+20Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [tcp] Merge boolean flags into a single "flags" fieldMichael Brown2010-07-151-8/+15
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [tcp] Use a dedicated timer for the TIME_WAIT stateMichael Brown2010-07-151-9/+32
| | | | | | | | | | | | | | | | | | iPXE currently repurposes the retransmission timer to hold the TCP connection in the TIME_WAIT state (i.e. waiting for up to 2*MSL in case we are required to re-ACK our peer's FIN due to a lost ACK). However, the fact that this timer is running will prevent such an ACK from ever being sent, since the logic in tcp_xmit() assumes that a running timer indicates that we ourselves are waiting for an ACK and so blocks the transmission. (We always wait for an ACK before sending our next packet, to keep our transmit data path as simple as possible.) Fix by using an entirely separate timer for the TIME_WAIT state, so that packets can still be sent. Reported-by: Piotr Jaroszyński <p.jaroszynski@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [build] Speed up rebuilding on header file changesMichael Brown2010-07-141-43/+62
| | | | | | | | | | | | | | Split src_template into deps_template (which handles the definition of foo_DEPS) and rules_template (which handles the rules referencing foo_DEPS). The rules_template is not affected by any included header files and so does not need to be reprocessed following a change to an included header file. This reduces the time required to rebuild the Makefile rules following a change to stdint.h by around 45%, at a cost of increasing the time required to rebuild after a "make veryclean" by around 3%. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [build] Standardise variable naming for inter-build state filesMichael Brown2010-07-141-9/+9
| | | | | | | For files such as $(BIN)/.blib.list, standardise the variable names used to represent the file contents. Signed-off-by: Michael Brown <mcb30@ipxe.org>
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