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Commit Graph

65 Commits

Author SHA1 Message Date
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
Michael Brown
bd0c8b21ad Change dhcp_num_option() to return the numerical value directly. 2006-06-28 12:16:41 +00:00
Nikhil Chandru Rao
6e2c97b0c0 Added ipv4_pseudo_header structure 2006-06-28 09:59:27 +00:00
Nikhil Chandru Rao
41b399d672 Fixed endianness of 16- and 32- bit values 2006-06-28 09:10:35 +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
Michael Brown
35557914e3 Simplify ipv4_tx() by not having a separate "source" variable now that
we are constructing the IP header ourselves.

Formatting fix-ups (80 column limit is mandatory!)
2006-06-26 16:10:34 +00:00
Michael Brown
b49de73950 Factorise out common code 2006-06-26 16:01:24 +00:00
Michael Brown
e517a4771b Split ipv6 functions out from ipv4.c 2006-06-26 15:33:46 +00:00
Michael Brown
e04ea505c9 Whitespace fixes 2006-06-26 13:45:24 +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
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
968501e323 For consistency 2006-06-16 13:17:40 +00:00
Michael Brown
bcdcd796fb 32kB window is actually larger than our typical receive ring size.
Shrink to 4kB for now.  We might want to see if it can be made
genuinely indicative of the RX ring size in the new TCP
implementation.
2006-06-16 13:16:59 +00:00
Michael Brown
bbd9e28061 Simplify TX datapath. 2006-06-16 00:19:46 +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
f6d20bb0f4 Put in a method to get the MAC address for the AoE target. (It's not
elegant, but it works).
2006-05-31 19:12:17 +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
552b4a178e One bit of an ASCII character can make a big difference. 2006-05-29 21:00:00 +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
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
cd3ecac809 Avoid causing TX overflow on small TX queues. 2006-05-27 13:55:36 +00:00
Michael Brown
69b1f24a97 I have no idea how this ever worked before. 2006-05-27 13:43:56 +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
1dbafa8950 Tidied up debugging messages 2006-05-27 13:38:49 +00:00
Michael Brown
b9cbae58fa Expert advice tells me that we *do* have to explicitly state the
options even when we want to use the defaults.
2006-05-19 17:50:49 +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
c69c1ec540 Documented login parameters that we negotiate. 2006-05-19 00:31:42 +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
813a052dc3 Set ErrorRecoveryLevel=0 (we don't want to have to handle it). 2006-05-17 17:41:50 +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
2421723a15 Rewrote printf and friends to better support standard C semantics. 2006-05-14 02:51:55 +00:00
Michael Brown
5009f8d6a2 Provide a SCSI device interface to the iSCSI protocol 2006-05-13 11:39:46 +00:00
Michael Brown
2462047128 Typo 2006-04-30 18:19:39 +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
8afb6303fb Half-way tidy 2006-04-30 15:23:29 +00:00
Michael Brown
04b6a1e004 Make all TCP methods optional; at least FTP data is a read-only
connection and so legitimately ignores acked() and senddata().
2006-04-30 13:20:40 +00:00
Michael Brown
aec0e127d2 Proof-of-concept FTP implementation 2006-04-30 12:02:07 +00:00
Michael Brown
01bd78d62a Created net/tcp and moved hello.c there 2006-04-30 09:34:11 +00:00