david/ipxe
david/ipxe
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cb42e573a0
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115 Commits

Author SHA1 Message Date
Nikhil Chandru Rao
cb42e573a0 Added retransmissions to TCP 2006-08-07 18:52:26 +00:00
Michael Brown
885a630ddf Fix routing when a gateway exists. This should probably be split into 
a separate function.
 2006-08-07 17:51:19 +00:00
Michael Brown
d0e4f198d6 Add iSCSI to the DHCP tests. 
Start updating iscsi.c to use Nikhil's TCP API.
 2006-08-07 16:48:24 +00:00
Nikhil Chandru Rao
6714ec745a Minor corrections 2006-08-07 07:37:23 +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
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
21c3d63c2e We shouldn't need to allocate a TX packet buffer when calling newdata(); 
if the application wants to send data then it will have to use the normal
senddata() mechanism.
 2006-08-01 14:13:58 +00:00
Michael Brown
ae277992c2 Request bootfile name; it doesn't seem to be automatically supplied by 
all servers.
 2006-08-01 14:12:27 +00:00
Michael Brown
3085f03ad4 Request Etherboot encapsulated options. 
Parameter request list is yet another option that ISC dhcpd ignores
unless it's in the main options block.

Fix logic error in parsing file and sname fields.
 2006-07-20 14:14:41 +00:00
Michael Brown
b26806cf18 Add dhcp_snprintf() for extracting DHCP string options. 2006-07-20 14:13:11 +00:00
Michael Brown
16d04386b6 Switch default stack to Nikhil's TCP/IP stack 2006-07-20 02:53:15 +00:00
Michael Brown
e74e20cb55 Remove the static IP address hack from netdevice.c, and change the 
default test to the DHCP test.
 2006-07-20 02:51:52 +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
6a0b4c9772 Free up any allocated options if we fail 2006-07-20 02:25:39 +00:00
Michael Brown
764cb41456 Document memory ownership. 2006-07-20 02:23:42 +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
30d9bcdc6e Rename unwieldy function 2006-07-20 00:24:25 +00:00
Michael Brown
9ad5cede96 Set DHCP_MESSAGE_TYPE option within the main options block. This 
doesn't seem to be required by the RFCs, but at least ISC dhcpd and
ethereal refuse to recognise it otherwise.
 2006-07-20 00:18:50 +00:00
Michael Brown
881b90e82c Packets without a DHCP_MESSAGE_TYPE option are probably just BOOTP 
packets.
 2006-07-20 00:03:25 +00:00
Michael Brown
29b358dd39 conn->local_port is now network-endian; do not swap when comparing 
against value in header.

Temporarily disable RX checksumming; it's broken and is holding up
work on higher-layer protocols
.
 2006-07-20 00:03:01 +00:00
Michael Brown
36c94eae78 Clarify hexiness of header length 2006-07-20 00:01:50 +00:00
Michael Brown
2c0eb6eb1d Correct TCP/IP checksum generation. 2006-07-19 23:38:05 +00:00
Michael Brown
0768670fd8 udp_open() takes ports in network-endian order. 2006-07-19 21:56:27 +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
a38010fb0e Make udp_send() call udp_sendto(), rather than vice-versa. 2006-07-19 20:38:49 +00:00
Michael Brown
7c84b74185 A small but very critical bug. 2006-07-19 20:16:46 +00:00
Michael Brown
82f3295794 Use more standardised format specifiers in debug messages (e.g. %p for 
a pointer).
 2006-07-19 18:45:18 +00:00
Michael Brown
ab633f6a73 Reserve space for lower-layer headers when allocating packet buffer. 
Use pkb_available() rather than pkb_len() (which will always return 0
on a freshly allocated buffer).

udp_send() should assume that the buffer has already been allocated.
 2006-07-19 18:21:30 +00:00
Michael Brown
e8daeb62b1 Eliminate confusion between functions that return pointers and 
functions that return status codes.

Zero the DHCP packet buffer *before* creating the options structures
inside it.
 2006-07-19 18:11:31 +00:00
Michael Brown
3369f93036 Add block identification to debug messages 2006-07-19 17:58:27 +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
16fc9858db Beginnings of DHCP protocol implementation 2006-07-19 17:01:06 +00:00
Nikhil Chandru Rao
bf515d3d65 Minor edit in net/udp.c 2006-07-19 16:27:54 +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
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