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539 Commits

Author SHA1 Message Date
Michael Brown
be0cd1cddd Added a functional version of getopt() and getopt_long(), ready for use 
in our commands.
 2006-12-07 03:54:57 +00:00
Michael Brown
d2bf7abe75 Added write support for three-wire devices (e.g. the RTL8139 EEPROM) 2006-12-06 19:51:58 +00:00
Michael Brown
89bcb57201 Update ftp.c to work with Nikhil's TCP stack. 
Remove the now-totally-obsolete sockaddr_in field from tcp.h.
 2006-12-05 19:07:47 +00:00
Michael Brown
6a91a03409 Added options listed in 
http://www.microsoft.com/whdc/winlogo/hwrequirements.mspx as required
for iSCSI boot.  Note that options 204-206 are listed in the document
but don't seem to be defined anywhere on the web.
 2006-12-05 15:40:28 +00:00
Michael Brown
d041d74054 Tied NVO commands into the human-interactable settings code that I 
completely forgot I'd written ages ago.
 2006-12-05 02:40:03 +00:00
Michael Brown
6842dd3222 Handle TargetAddress 2006-12-05 01:41:32 +00:00
Michael Brown
67577556a2 Handle strings as complete units, instead of a byte at a time. 2006-12-05 01:08:56 +00:00
Michael Brown
3a7d762c1c Add iscsi_rx_buffered_data() and supporting infrastructure. 2006-12-05 00:39:05 +00:00
Michael Brown
d9f32726b4 Added quick and dirty commands for testing the new NVO code. 2006-12-04 23:40:35 +00:00
Michael Brown
ab4e1dba3f Added nvo_save() 2006-12-04 22:04:10 +00:00
Michael Brown
cc9bcb99a0 Add the concept of a fragment list for non-volatile stored options. 2006-12-04 21:46:13 +00:00
Michael Brown
d62c83a350 Migrated etherfabric driver to using generic SPI layer. 2006-12-04 20:47:51 +00:00
Michael Brown
2d8d21fe74 Added the generic block-splitting code to nvs.c 2006-12-04 19:06:07 +00:00
Michael Brown
1961ba44e1 Added generic SPI protocol handler with read and write support. 2006-12-04 18:32:55 +00:00
Michael Brown
946967f09c Abstracted out part of the concept of an SPI device to a generalised NVS 
device.

Separated the mechanisms of non-volatile storage access and non-volatile
stored options.
 2006-12-04 18:23:06 +00:00
Michael Brown
dc06c895fc Changed length parameter in SPI methods to be a byte length, rather than 
a word length.
 2006-12-04 16:09:59 +00:00
Michael Brown
931f94dca3 Generalised the SPI abstraction layer to also be able to handle interfaces 
that don't provide the full flexibility of a bit-bashing interface.

Temporarily hacked rtl8139.c to use the new interface.
 2006-12-04 15:36:51 +00:00
Michael Brown
2e41bfd268 Force syntax-checking on assertions even in non-asserting builds. 2006-12-04 15:09:57 +00:00
Michael Brown
3e0286dee3 Move ANSI C standard prototypes to stdlib.h; leave the gPXE-specific 
function prototypes (e.g. malloc_dma()) in malloc.h.
 2006-12-02 20:10:21 +00:00
Michael Brown
4cd56820ea Basic non-volatile storage support 2006-11-29 02:41:08 +00:00
Michael Brown
74c41fac06 Create "username" and "password" DHCP options, ready for placing this 
information in NVS.
 2006-11-28 02:14:20 +00:00
Michael Brown
3f0b4d9ed8 Updated to use asynchronous operation model for iSCSI requests 
Added CHAP authentication
 2006-11-28 00:29:02 +00:00
Michael Brown
82342e0b8f Marked memcmp/strcmp as "pure" functions, to allow gcc to optimise 
away code such as

  if ( strcmp ( some_string, "some_value" ) != 0 ) {
     DBG ( "Bad value received!" );
  }
 2006-11-27 23:50:24 +00:00
Michael Brown
c4677c7e73 Implemented realloc(), and changed the semantics of malloc(0) to allow 
for realloc(0) being a valid way to free memory.
 2006-11-24 16:51:18 +00:00
Michael Brown
fdaddd969a Added "name" field to digest algorithms 2006-11-21 16:14:50 +00:00
Michael Brown
c5428303e4 Added generic CHAP layer, independent of iSCSI 2006-11-21 13:26:59 +00:00
Michael Brown
57d539aab0 Made it temporarily possible to call MD5 routines directly from external 
code, rather than going through the digest layer.

Removed a spurious line of constants.
 2006-11-15 04:22:22 +00:00
Michael Brown
fedc186fd7 Split login into security negotation and operational parameter 
negotiation phases, to allow inclusion of CHAP authentication.
 2006-10-03 09:17:38 +00:00
Michael Brown
b16de6ae66 Inhibit compiler warnings on DBG() when building a non-debug object, 
while retaining the format string checking.
 2006-09-27 11:09:56 +00:00
Michael Brown
b8baee7632 Removed as a gesture of goodwill following a request from Microsoft 2006-09-18 21:56:15 +00:00
Michael Brown
2f60aa42e7 Killed 2006-09-18 21:55:27 +00:00
Michael Brown
0dca1dc8ce Made eth_ntoa() public for use in legacy drivers' DBG() statements. 2006-09-15 12:34:34 +00:00
Marty Connor
e2aca77132 update DBG_DISCARD macro to allow the compiler to see the argument for compile-time checking, while still having it optimized away during compilation 2006-09-14 17:38:17 +00:00
Michael Brown
bb8725bffa Added the "swap in place" macros 2006-09-11 17:54:19 +00:00
Michael Brown
1ddfce2308 Generalisation of a message digest algorithm 2006-09-11 16:29:45 +00:00
Michael Brown
22511400c7 Added generic function for calculating ACPI table checksum 2006-08-27 22:02:08 +00:00
Michael Brown
cab3f4502b Correct option number for DHCP_DNS_SERVERS, and add it to the request 
list.
 2006-08-27 01:37:58 +00:00
Michael Brown
b4e559d7e2 Added basic profiling support 2006-08-24 16:22:56 +00:00
Nikhil Chandru Rao
d1d334b8e1 IP6 support 2006-08-19 15:58:22 +00:00
Michael Brown
cf2178f885 Added debug strings. 2006-08-16 00:05:24 +00:00
Michael Brown
97439cb6eb Kill off poll_interruptions(); it is lethal when we're acting as a PXE 
stack or INT 13 emulator etc.
 2006-08-14 22:29:51 +00:00
Michael Brown
7029fb8eff Add string configuration type 2006-08-11 18:16:57 +00:00
Michael Brown
db46972349 Added basic infrastructure for manipulating settings. 2006-08-11 18:00:22 +00:00
Derek Pryor
25ea34a8d7 New HTTP protocol and test code 2006-08-11 14:13:02 +00:00
Michael Brown
bc1a37eacb Added missing packed attribute 2006-08-10 00:10:09 +00:00
Michael Brown
35559ad87c Added description for a basic ACPI table, taken from 
include/linux/acpi.h.
 2006-08-10 00:09:31 +00:00
Michael Brown
c3a4f3c5da Towards an RFC2988-compliant timer. 2006-08-09 15:54:17 +00:00
Marty Connor
ee9ae8130a Remove _PROTOCOL macros for gcc 3.2 compatibility 2006-08-09 04:42:14 +00:00
Michael Brown
75d26d884a Added pxe_netdev; a slight hack for now, but will need to be done 
properly for the PXE UNDI API anyway.
 2006-08-09 02:58:27 +00:00
Michael Brown
e9561aafc0 Derive xid dynamically from the netdev, so that we can call 
create_dhcp_packet() from pxe_preboot.c, after the dhcp_session is long
gone.

Expose the functions required by pxe_preboot.c
 2006-08-09 02:56:40 +00:00
Marty Connor
41af7457a8 Merge of Fredrik Hultin command_line 2006-08-09 02:30:35 +00:00
Michael Brown
a3d508b648 Clarified packet ownership transfer between a few functions. 
Added a large number of missing calls to free_pkb().  In the case of UDP,
no received packets were ever freed, which lead to memory exhaustion
remarkably quickly once pxelinux started up.

In general, any function with _rx() in its name which accepts a pk_buff
*must* either call free_pkb() or pass the pkb to another _rx() function
(e.g. the next layer up the stack).  Since the UDP (and TCP) layers don't
pass packet buffers up to the higher-layer protocols (the
"applications"), they must free the packet buffer after calling the
application's newdata() method.
 2006-08-09 01:24:32 +00:00
Michael Brown
d1a123b1f4 Added TFTP test code (currently just dumps file to console). 2006-08-09 00:09:29 +00:00
Michael Brown
3611cb17b7 Initial (untested) implementation of TFTP over the new UDP API. 2006-08-08 23:45:52 +00:00
Michael Brown
eda79ec32b The prototype for strcasecmp() is apparently in strings.h. 2006-08-08 22:52:16 +00:00
Michael Brown
72cd29f13c Added some TFTP definitions for use with the new UDP API. 2006-08-08 22:01:16 +00:00
Michael Brown
d12383f1d3 Update to match the daft capitalisation in the actual PXE spec 2006-08-08 20:43:05 +00:00
Michael Brown
68e33224ef gcc3 compatibility: removed ARP_NET_PROTOCOL(). 2006-08-08 17:44:25 +00:00
Nikhil Chandru Rao
d2bdf81505 Removed some bugs in TCP 2006-08-08 03:42:30 +00:00
Nikhil Chandru Rao
cb42e573a0 Added retransmissions to TCP 2006-08-07 18:52:26 +00:00
Michael Brown
ecdcdea1af Remove unused attribute from __table macros; the tables are no longer 
static since otherwise gcc4 optimises them away completely.  Also, it
really *is* an error if the table start and end are unused, so they
certainly shouldn't be marked with attribute unused.
 2006-08-07 17:06:31 +00:00
Michael Brown
eb24eece0e Convert some trivial functions to static inlines. 2006-08-03 23:42:03 +00:00
Michael Brown
ffe0e24249 Make the UDP senddata() methods return a status code. 
udp_connect() now follows the standard BSD sockets semantics and simply
sets the default address for outgoing packets; it doesn't filter incoming
packets.
 2006-08-03 23:10:14 +00:00
Michael Brown
a0a872f7f1 Updated PXE UDP implementation to use the new Etherboot UDP API. 
Updated PXE API dispatcher to use copy_{to,from}_user, and moved to
arch/i386 since the implementation is quite architecture-dependent.
(The individual PXE API calls can be largely
architecture-independent.)
 2006-08-02 23:08:10 +00:00
Michael Brown
e24a6cb525 Moved the basic struct sockaddr out of in.h. 2006-08-02 00:06:30 +00:00
Michael Brown
467e9627cc Added features that will be required for PXE UDP support. 
Introduced struct sockaddr_tcpip, to simplify code that deals with
both IPv4 and IPv6 addresses.

Reorganised parts of tcpip.c and udp.c.
 2006-08-02 00:02:21 +00:00
Nikhil Chandru Rao
9225f4edac TCP support 2006-08-01 20:46:50 +00:00
Nikhil Chandru Rao
c24546c70b Minor changes to the network layer rx() functions 2006-08-01 20:27:26 +00:00
Michael Brown
beadd82208 Remove unused functions. 2006-08-01 14:26:02 +00:00
Michael Brown
1ebb68e49a Renamed trans_{rx,tx}() to tcpip_{rx,tx}(), since they are specific to 
the TCP/IP protocol suite (rather than being general transport-layer
functions).
 2006-08-01 14:22:04 +00:00
Michael Brown
3a0e293123 Renamed tcpip_if.[ch] to tcpip.[ch] 2006-08-01 14:18:09 +00:00
Michael Brown
b26806cf18 Add dhcp_snprintf() for extracting DHCP string options. 2006-07-20 14:13:11 +00:00
Michael Brown
7ca8bcd98c Print out the lease time, just to show how easy it is. 2006-07-20 03:02:34 +00:00
Michael Brown
00a1f000b1 Added dhcp_ipv4_option() and friends. 
Added test code to configure the interface for IPv4 after DHCP.
 2006-07-20 02:49:59 +00:00
Michael Brown
7ca1bb0fbe Now successfully negotiates the whole DHCPDISCOVER/OFFER/REQUEST/ACK 
cycle.  :)
 2006-07-20 02:19:06 +00:00
Michael Brown
2c0eb6eb1d Correct TCP/IP checksum generation. 2006-07-19 23:38:05 +00:00
Nikhil Chandru Rao
13dbf5494d Minor edits 2006-07-19 21:05:58 +00:00
Michael Brown
224529d8dd Now capable of sending what, to me, looks like a valid DHCPDISCOVER 
(apart from the bad UDP checksum).
 2006-07-19 20:50:50 +00:00
Michael Brown
6858b14a34 Add pkb_available() 2006-07-19 18:16:48 +00:00
Michael Brown
6d9d48537e Added some debug messages and DHCP test code 2006-07-19 17:49:31 +00:00
Michael Brown
317b962b65 Proof of concept: transmit a single DHCPDISCOVER and dump out any 
parsed DHCP responses.
 2006-07-19 17:32:13 +00:00
Michael Brown
76070cd226 Added missing prototype 2006-07-19 17:29:18 +00:00
Michael Brown
bf0cdd42cf Add some DHCP options that we are likely to use 2006-07-19 17:00:32 +00:00
Michael Brown
e0668ad8df Correct typo 2006-07-19 16:58:44 +00:00
Nikhil Chandru Rao
ab577e1a3a The following edits were made: \ 
1. Updated UDP send data code\
2. Corrected internet checksum\
3. Moved udp_buffer() and udp_buflen() to udp.c from udp.h
 2006-07-19 16:25:23 +00:00
Michael Brown
b8d619e822 Added macros for generating static DHCP options 2006-07-19 16:16:51 +00:00
Michael Brown
254fe6e00e Split DHCP packet creation into two parts: creating the basic packet 
structure, and populating it with options.  This should allow us to
use the same basic options list for both DHCPDISCOVER and DHCPREQUEST,
plus making it much easier to set the non-constant parameters
(e.g. requested IP address) in request packets.
 2006-07-19 12:12:45 +00:00
Michael Brown
e40ebb67de Allow for calling find_dhcp_option() with "options" set to NULL, in order 
to search through all registered option blocks.

Move some static inlines that are likely to be used frequently into
dhcpopts.c as normal functions, to save space.
 2006-07-19 11:05:38 +00:00
Michael Brown
6c01d3bb95 Fix creation of the htype field; the ll_proto field from which it is 
derived is a 16-bit big-endian field, but htype is only 8 bits wide.
 2006-07-17 13:07:14 +00:00
Michael Brown
b24947f0c0 Add sketch code to reassemble a DHCP packet from our internal "everything 
is a DHCP option" data structures.

We need this code in order to be able to return a DHCP packet to a PXE NBP
which reflects options from our multiple sources (e.g. NVS and DHCP
server).  This is expensive, but necessary.  Having paid this cost, we may
as well try to use the same code to generate our DHCP request packets,
since the process is similar.
 2006-07-17 12:47:22 +00:00
Michael Brown
12da7ea475 Add (untested) code for parsing a received DHCP packet and constructing a 
DHCP options block from the contents.
 2006-07-15 19:24:55 +00:00
Michael Brown
19e8b41562 Add code to modify DHCP option values within a block. 2006-07-13 20:49:04 +00:00
Nikhil Chandru Rao
5f651f8622 Added fragment reassembly code 2006-06-30 08:52:03 +00:00
Nikhil Chandru Rao
8de630c62b Removing net/interface.c and include/gpxe/interface.h 2006-06-29 06:51:11 +00:00
Michael Brown
51d62d1a3c Provide a mechanism for returning the encapsulator as well as the 
encapsulated option; this will be needed for modifications to the options
block.
 2006-06-28 18:59:54 +00:00
Nikhil Chandru Rao
c9ea710930 Renamed net/interface.c and include/gpxe/interface.h to net/tcpip_if.c and include/gpxe/tcpip_if.h respectively. Made changes in the other files. 2006-06-28 15:43:08 +00:00
Michael Brown
291f072b82 Add priority mechanism 2006-06-28 13:48:02 +00:00
Dan Lynch
d8b51332c6 typo in macro fixed 2006-06-28 11:53:41 +00:00
Nikhil Chandru Rao
6e2c97b0c0 Added ipv4_pseudo_header structure 2006-06-28 09:59:27 +00:00
Nikhil Chandru Rao
e60817fa7a IP6 specifications 2006-06-28 09:44:41 +00:00
Nikhil Chandru Rao
a6c6b3d739 Fixed whitespaces; updated UDP code 2006-06-28 07:46:28 +00:00
Michael Brown
0bcaa8a21f First stab at DHCP option handling in a way that will allow us to have 
multiple option sources (e.g. multiple DHCP replies, non-volatile
storage etc.)
 2006-06-27 17:24:07 +00:00
Dan Lynch
e442447f37 - multiple static inline definitions added 
- changes made to some constants and macros
- changes made to _curses_screen struct
- identified and removed prototypes for yet more unsupportable functions
 2006-06-27 10:38:57 +00:00
Nikhil Chandru Rao
f5ebf067c4 added generalized sockaddr structure and ip6 sockaddr 2006-06-25 05:18:24 +00:00
Nikhil Chandru Rao
90fbff8f34 added support for processing and transmitting without uIP 2006-06-25 05:16:54 +00:00
Nikhil Chandru Rao
74339b3c6e updated UDP interface 2006-06-25 05:13:17 +00:00
Nikhil Chandru Rao
fdc05e2664 created interface for transport-network interface 2006-06-25 05:12:07 +00:00
Michael Brown
3a660f9b25 Update ftp.c and hello.c to use the generic async_operations API. 2006-06-19 15:46:58 +00:00
Michael Brown
15397db2b4 Placeholder 2006-06-17 23:34:48 +00:00
Michael Brown
8637834031 Made the temporary buffer part of the TCP senddata() API, to ease the 
transition away from uIP.

Prepared ipv4.c for transition away from uIP.
 2006-06-17 23:20:54 +00:00
Michael Brown
3c8aafa209 Simplify RX data path. 
Kill off the static single net device and move to proper dynamic
registration (which we need with the new device model).

Break the (flawed) assumption that all network-layer protocols can use
ARP; such network-layer protocols (i.e. IPv4) must now register as an ARP
protocol using ARP_NET_PROTOCOL() and provide a single method for checking
the existence of a local network-layer address.
 2006-06-17 22:36:27 +00:00
Michael Brown
bbd9e28061 Simplify TX datapath. 2006-06-16 00:19:46 +00:00
Michael Brown
cce2e47ff4 Added iSCSI boot test code 2006-06-14 17:00:25 +00:00
Michael Brown
3b51c719d3 Generalise three-wire interface to generic SPI interface. 
Update rtl8139 driver to instantiate an SPI interface with a three-wire
device attached.
 2006-06-14 00:22:50 +00:00
Michael Brown
ab4f96e525 Move per-transition delays from generic bit-bashing layer to i2c layer 
(since SPI bit-bashing will require different delay semantics).
 2006-06-14 00:20:35 +00:00
Michael Brown
51a36f1cfb Change read_bit() to return 0 or -1UL, rather than 0 or 1. 2006-06-12 19:29:50 +00:00
Michael Brown
3ed40686c9 Added bit-bashing i2c interface code 2006-06-11 00:57:00 +00:00
Michael Brown
e90b64d625 Added sketch of bit-bashing interface common code 2006-06-08 19:47:09 +00:00
Michael Brown
286bf68faf Added a very quick and dirty compatibility layer, to allow 
not-yet-updated drivers to at least function.
 2006-06-05 15:45:21 +00:00
Michael Brown
d78581297b Improve tcpdump legibility. 2006-06-01 19:23:52 +00:00
Michael Brown
48fb6c6dc2 Updated retry timer mechanism to incorporate smoothed RTT estimation. 
AoE now uses the retry timer mechanism.
 2006-06-01 14:33:52 +00:00
Michael Brown
50415b3aca Make DBG_DISCARD correct 2006-06-01 12:11:09 +00:00
Michael Brown
1f394c2f7c Backing out last change; no immediate plans to make the whole block-device 
layer asynchronous, so keeping the sync/async boundary within aoedev.c
seems cleanest for now.
 2006-06-01 11:14:59 +00:00
Michael Brown
99ef98d0bf ATA devices are now asynchronous. The ATA layer itself now performs the 
async_wait(), though we may wish to move this higher up the stack, and
consider making the block device model asynchronous.  (There is only a
marginal cost for synchronous devices, since they can simply call
async_done() before returning; async_wait() will work seamlessly in this
situation).
 2006-05-31 18:57:11 +00:00
Michael Brown
68125bc441 Added generic asynchronous operations code. 
Removed data_in_len and data_out_len from ata_command structure; the
lengths are implied by the sector count and the presence of the data_in
or data_out pointers.

Changed AoE code to use subcommands by default, and made aoe_issue()
nonblocking (with completion via async_wait()).
 2006-05-31 14:34:17 +00:00
Michael Brown
1db1a6dad3 Added first sketch of a generic retry timer mechanism. The idea is to use 
these timer objects in AoE and UDP protocols (where there is no underlying
retransmission mechanism) without requiring each protocol to implement its
own individual retry logic.  Eventually, we should be able to use the same
timer code for TCP retransmissions as well.
 2006-05-29 14:55:07 +00:00
Michael Brown
6541338897 Handle multi-sector reads by splitting them into subcommands. 2006-05-29 08:25:31 +00:00
Michael Brown
9a2a52693d Initial AoE implementation. Limitations are: 
Cannot yet handle reads of more than two sectors

  No retransmission

  No way to find out a target's MAC address (this proof of concept uses
  broadcasts)

These limitations shall not last long!  :)
 2006-05-28 23:29:43 +00:00
Michael Brown
6f998cecb3 Use separate data-in and data-out buffers. 
Increase code simplicity at the expense of around 64 bytes.
 2006-05-28 23:26:42 +00:00
Michael Brown
6d6252067f Add ETH_P_AOE 2006-05-28 21:47:52 +00:00
Michael Brown
f743de4858 Added tcp_kick(). This speed up LILO and GRUB booting by almost two 
orders of magnitude.
 2006-05-27 19:01:20 +00:00
Michael Brown
6c50564724 Make PKB_ZLEN the minimum possible size of packet buffer (to allow for 
hardware that can't autopad).
 2006-05-27 13:39:45 +00:00
Michael Brown
aa2468babe Added abstraction layer for a three-wire serial device (e.g. the EEPROM 
used on RTL8139 cards).
 2006-05-26 15:39:24 +00:00
Michael Brown
3204a1e941 Removed some obsolete INIT_XXX constants. 2006-05-25 01:09:06 +00:00
Dan Lynch
bef8874842 - implemented printw (formatted string output, a la printf) 
- implemented hline/vline (part of wborder family)
- screen cursor now relocates at same time as window cursor when
  restoring after a non-wrapping function
 2006-05-22 17:03:41 +00:00
Michael Brown
84a493b88d Allow vcprintf() to be called by external code such as the curses library. 
Also trim another eight bytes from vsprintf.o.  :)
 2006-05-22 15:41:01 +00:00
Dan Lynch
f778500739 - fixes to _wputch to get positioning and wrap working properly 
- fixes to wborder (same)
- addition of a few minor functions
 2006-05-22 13:10:19 +00:00
Michael Brown
9dfb9d84b4 Made the LBA48 example clearer. 2006-05-21 16:02:38 +00:00
Michael Brown
80958ff69c Added (untested) support for ATA devices. This code should be generic 
enough to support both real IDE chipsets and AoE.
 2006-05-21 16:01:23 +00:00
Michael Brown
af4aacb978 Added missing @file block 2006-05-20 13:25:07 +00:00
Michael Brown
402ba15c64 READ CAPACITY (16) turns out to be an optional command (even though 
READ(16) is mandatory); we must use READ CAPACITY (10) first and then
use READ CAPACITY (16) if the READ CAPACITY (10) returns "out of range".
 2006-05-19 18:54:38 +00:00
Michael Brown
444b885a7d Add EOVERFLOW==ERANGE 2006-05-19 18:53:12 +00:00
Dan Lynch
acf572905c - made some of the bit shifting attribute access simpler (in my mind) 
- added extern declarations for global vars
- removed comments from static inlines (too time consuming to do them
  all, considering all so far have been due to the ridiculous amount of
  redundancy within the API spec)
- removed a few more extern func decls for funcs that cannot be
  implemented at this time
 2006-05-19 16:22:10 +00:00
Michael Brown
d48d0fb1bb Add the concept of a "user pointer" (similar to the void __user * in 
the kernel), which encapsulates the information needed to refer to an
external buffer.  Under normal operation, this can just be a void *
equivalent, but under -DKEEP_IT_REAL it would be a segoff_t equivalent.

Use this concept to avoid the need for bounce buffers in int13.c,
which reduces memory usage and opens up the possibility of using
multi-sector reads.

Extend the block-device API and the SCSI block device implementation
to support multi-sector reads.

Update iscsi.c to use user buffers.

Move the obsolete portions of realmode.h to old_realmode.h.

MS-DOS now boots an order of magnitude faster over iSCSI (~10 seconds
from power-up to C:> prompt in bochs).
 2006-05-19 15:06:51 +00:00
Michael Brown
a280587cde iSCSI writes seem to be working (at least, the ethereal trace shows no 
errors; still need to verify data integrity).

SCSI response PDUs are handled: status and sense data (if available) are
returned via the scsi_command structure.

Updated iSCSI session parameter usage.
 2006-05-19 00:20:08 +00:00
Michael Brown
b531bd2bda All uses iscsi_state were removed some time ago; removing the 
declaration.
 2006-05-18 21:38:16 +00:00
Dan Lynch
2814681d20 all window primitives implemented 2006-05-18 17:51:19 +00:00
Michael Brown
6b6096d28b Strip down i386 PCI configuration space I/O to the bare minimum. A 
typical build will now include 880 bytes of PCI support code, compared to
2327 bytes in Etherboot 5.4.

(There is a slight cost of around 5 extra bytes per access to a
non-constant config space address; this should be an overall win.
Driver-specific accesses will usually be to constant addresses, for
which there is no additional cost.)
 2006-05-17 01:12:11 +00:00
Michael Brown
15ee09ed10 Restructured PCI subsystem to fit the new device model. 
Generic PCI code now handles 64-bit BARs correctly when setting
"membase"; drivers should need to call pci_bar_start() only if they want
to use BARs other than the first memory or I/O BAR.

Split rarely-used PCI functions out into pciextra.c.

Core PCI code is now 662 bytes (down from 1308 bytes in Etherboot 5.4).
284 bytes of this saving comes from the pci/pciextra split.

Cosmetic changes to lots of drivers (e.g. vendor_id->vendor in order to
match the names used in Linux).
 2006-05-16 15:12:06 +00:00
Michael Brown
0afa9db2de Tear out old heap code, replace with code that simply allocates memory 
for use by malloc().

This breaks the image-loading code (which previously used the heap to
allocate the buffer for downloading the image), but that's not a major
concern since I'm going to tear out all the image formats within the next
couple of days anyway.  Byebye, NBI!  :)
 2006-05-16 15:00:36 +00:00
Michael Brown
441189c6f8 Kill off the "all devices are boot devices" idea 2006-05-16 14:42:15 +00:00
Michael Brown
7cd0390013 Add list_for_each_entry_safe. 2006-05-16 14:14:31 +00:00
Michael Brown
ceba6ecb75 Added generic device model. 2006-05-16 14:10:21 +00:00
Michael Brown
6b514393d3 Change movetoyx(), putc() and getc() to methods of the screen. 2006-05-15 09:51:18 +00:00
Dan Lynch
dccc6aed3a lightweight xcurses implementation for etherboot (Michael made me do it...) 2006-05-15 09:29:48 +00:00
Michael Brown
f25731d08f Split "iSCSI as a SCSI device" out from "iSCSI as a TCP protocol". 2006-05-14 23:29:16 +00:00
Michael Brown
25f5d114a0 Updated documentation. 
Shaved around 100 bytes off vsprintf.o.  It's now 50 bytes smaller than
the old implementation and provides much more conformant semantics,
including the ability to return the number of characters that would have
been printed to the string had the buffer been big enough.  (iSCSI needs
this functionality).
 2006-05-14 03:31:20 +00:00
Michael Brown
2421723a15 Rewrote printf and friends to better support standard C semantics. 2006-05-14 02:51:55 +00:00
Michael Brown
1ad72e0e79 Add 64-bit byte-swapping operations. 2006-05-13 11:40:39 +00:00
Michael Brown
5009f8d6a2 Provide a SCSI device interface to the iSCSI protocol 2006-05-13 11:39:46 +00:00
Michael Brown
f33f01c126 Defined SCSI device interface, and added SCSI block device 
implementation.
 2006-05-13 11:37:50 +00:00
Michael Brown
8638a5e471 Defined a block device interface. 2006-05-13 11:36:30 +00:00
Michael Brown
568cad0ddc (Redoing check-in lost by SourceForge's failure.) 2006-05-13 11:30:03 +00:00
Michael Brown
9fcded3d23 Towards a(nother) new real-mode infrastructure, in which we take 
advantage of the fact that we have to have a permanently-resident block
in base memory.
 2006-05-02 15:41:21 +00:00
Michael Brown
9e1becaf8a Merge TCP aborted(), timedout() and closed() methods into a single 
closed() method with a reason code.
 2006-04-30 16:59:45 +00:00
Michael Brown
aec0e127d2 Proof-of-concept FTP implementation 2006-04-30 12:02:07 +00:00
Michael Brown
a42092d2a0 Add a temporary snprintf, so that safely-written code can at least 
compile, even if it won't yet be safe.
 2006-04-30 12:01:31 +00:00
Michael Brown
8df7e74990 Fix up prototype of strtoul() to match POSIX. 2006-04-30 11:45:38 +00:00
Michael Brown
7af478b30d Make tcp_connect() void; it will eventually have no failure case. 2006-04-30 02:13:52 +00:00
Michael Brown
9c9208a132 Put the TCP connection periodic processing in tcp.c, where it belongs. 2006-04-30 02:08:42 +00:00
Michael Brown
178b0a7e5e Consistency 2006-04-30 01:35:01 +00:00
Michael Brown
352bf1bda2 Move init.h to gpxe/init.h. 2006-04-30 01:08:52 +00:00
Michael Brown
bac97eb979 Change semantics of network API so that packet-absorbing calls *always* 
take ownership of the packet, rather than doing so only if they return
success.  This breaks semantic compatibility with Linux's
hard_start_xmit() method, but means that we don't have to worry so much
about error cases.

Split mechanism of processing received packets (net_rx_process()) out
from policy (net_step()), preparatory to putting net_step() in a separate
object.
 2006-04-29 17:17:43 +00:00
Michael Brown
23c494d14e Added basic code for implementing co-operative multitasking. 
Yes, you really can do it in 65 bytes.
 2006-04-29 16:42:09 +00:00
Michael Brown
129c6c3968 Network layer now works as a proof of concept 2006-04-28 14:13:50 +00:00
Michael Brown
1488cd3b73 Fix a couple of broken assertions, and align the buffer correctly. 2006-04-28 14:09:31 +00:00
Michael Brown
d8e99bf28f Gave up on adding POSIX errno's as required, and just added (almost) all 
of them in one go.

EBADIMG has been replaced by ENOEXEC, and EIMGRET by ECANCELED.
 2006-04-28 13:44:34 +00:00
Michael Brown
cf3783b4ca Actually, it's probably a good idea to have packet buffers avoid 4kB 
crossings.
 2006-04-25 12:11:36 +00:00
Michael Brown
b601a7d355 Updated memory allocator to improve support for unaligned or partially 
aligned blocks.

Moved header to include/malloc.h, since we now also provide the
POSIX-like malloc()/free() pair.

Not yet tested.
 2006-04-25 03:30:46 +00:00
Michael Brown
2f0d412210 Add __constant_flsl(), because it's useful for finding out the next 
power-of-two up from a given constant via
  ( 1 << fls ( constant - 1 ) )

fls(), flsl(), ffs() and ffsl() appear in strings.h according to
POSIX.
 2006-04-24 23:00:32 +00:00
Michael Brown
455b76980f Added pkb_reserve(). 2006-04-24 19:34:51 +00:00
Michael Brown
832e86246b gcc is rather over-aggressive about optimising out static data structures 
even when __atribute__ (( unused )) is correctly set...
 2006-04-24 18:31:37 +00:00
Michael Brown
824d6ffa7f Header rearrangement. 
I want to get to the point where any header in include/ reflects a
standard user-level header (e.g. a POSIX header), while everything that's
specific to gPXE lives in include/gpxe/.  Headers that reflect a Linux
header (e.g. if_ether.h) should also be in include/gpxe/, with the same
name as the Linux header and, preferably, the same names used for the
definitions.
 2006-04-24 15:42:49 +00:00
Michael Brown
53f78346bf Network API now allows for multiple network devices (although the 
implementation allows for only one, and does so without compromising on
the efficiency of static allocation).

Link-layer protocols are cleanly separated from the device drivers.

Network-layer protocols are cleanly separated from individual network
devices.

Link-layer and network-layer protocols are cleanly separated from each
other.
 2006-04-24 15:38:53 +00:00
Michael Brown
fdc2ee79db Network API now allows for multiple network devices (although the 
implementation allows for only one, and does so without compromising on
the efficiency of static allocation).

Link-layer protocols are cleanly separated from the device drivers.

Network-layer protocols are cleanly separated from individual network
devices.

Link-layer and network-layer protocols are cleanly separated from each
other.
 2006-04-24 15:33:06 +00:00
Michael Brown
5423f876fb Don't bother poisoning lists; it costs code size. 2006-04-24 15:28:56 +00:00
Michael Brown
1d7cfd5acf Prototype now clashes with the macro in arch/i386. 2006-04-24 15:27:58 +00:00
Michael Brown
b6b6a0b5fe First draft of a dynamic memory allocator 2006-04-24 15:21:18 +00:00
Michael Brown
6209bd873a First sketch of a new net device API. 2006-04-19 12:07:46 +00:00
Michael Brown
bdc8190c8d Remove the concept of the media-independent link-layer header and replace 
it with metadata in the pkb structure.  This is required since UNDI will
want to be able to parse the link-layer header without destroying it.
 2006-04-19 11:32:24 +00:00
Michael Brown
3ca7dbe7ca Added the concept of a network interface (a network-layer concept) as 
separate from a network device (a link-layer concept).
 2006-04-19 02:09:08 +00:00
Michael Brown
d65a66606b Typo 2006-04-19 02:08:27 +00:00
Michael Brown
2558439ce4 First version, based on include/linux/list.h, stripped down to just 
those functions we are likely to need.

Still need to come up with a way of getting the linker to create
static lists using this linking mechanism.
 2006-04-19 02:05:50 +00:00
Michael Brown
d24042f0bb Update now that if_ether.h has moved. 2006-04-19 01:56:10 +00:00
Michael Brown
4f3581e99c Added ENOENT and EAFNOSUPPORT 2006-04-19 01:54:53 +00:00
Michael Brown
ab139ceda9 Added pkb_unput() and pkb_len(). 2006-04-19 01:54:24 +00:00
Michael Brown
744b895077 Make flags more efficient. 
Add 'raw' net_addr facility (needed for ARP).
 2006-04-19 01:53:49 +00:00
Michael Brown
49f933fbc3 Moved if_ether.h and if_arp.h to include/gpxe, for consistency with Linux 
kernel.

Removed obsolete struct arprequest from if_arp.h and put it in nic.c so
that nic.c will still compile.  ARP will very shortly be handled by
net/arp.c instead.
 2006-04-19 01:52:41 +00:00
Michael Brown
363905e1b6 Add missing prototype 2006-04-19 01:42:33 +00:00
Michael Brown
02d342f38f First version 2006-04-19 01:42:03 +00:00