Michael Brown
ffe0e24249
Make the UDP senddata() methods return a status code.
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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
467e9627cc
Added features that will be required for PXE UDP support.
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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
Michael Brown
ae277992c2
Request bootfile name; it doesn't seem to be automatically supplied by
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all servers.
2006-08-01 14:12:27 +00:00
Michael Brown
3085f03ad4
Request Etherboot encapsulated options.
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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
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
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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
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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
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packets.
2006-07-20 00:03:25 +00:00
Michael Brown
0768670fd8
udp_open() takes ports in network-endian order.
2006-07-19 21:56:27 +00:00
Michael Brown
224529d8dd
Now capable of sending what, to me, looks like a valid DHCPDISCOVER
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(apart from the bad UDP checksum).
2006-07-19 20:50:50 +00:00
Michael Brown
e8daeb62b1
Eliminate confusion between functions that return pointers and
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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
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
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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
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
6c01d3bb95
Fix creation of the htype field; the ll_proto field from which it is
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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
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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
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DHCP options block from the contents.
2006-07-15 19:24:55 +00:00
