~lukeshu/systemd - Unnamed repository; edit this file 'description' to name the repository.

Age	Commit message (Collapse)	Author
2013-12-12	dhcp: Add maximum message size option	Patrik Flykt
	Add maximum message size option to keep some DHCP server implementations from sending too big messages. See ConnMan commit 0c5c862749c05193cf4c513628328c6db02b5222.
2013-12-12	dhcp: Send DHCP Request to acquire an IP address	Patrik Flykt
	Create and send a DHCP Request message reusing already existing parts of the code. This causes factoring out IP and UDP header creation and moving next timeout calculation to be done every time in the timer callback function independent of DHCP state. Also add an exponential part to the timer calculation, bail out if there are errors while resending the DHCP message for the sixth or more times.
2013-12-12	dhcp: Handle received DHCP Offer message	Patrik Flykt
	Create a function for handling the full IP, UDP and DHCP packet and tie it to the main loop. Verify IP and UDP headers and checksum. Creat a new lease structure with using the values supplied in the DHCP message. Free the lease structure when client is stopped. Split out socket handling into a creation and a sending part. As a result modify the test code.
2013-12-12	dhcp: Add timeout and main loop support	Patrik Flykt
	Require a main loop to be set when creating a DHCP client. Set up a timer to resend DHCP Discover messages and add a 0-2 second delay to the timeout value. Move to state Selecting after successful sending of a Discover message.
2013-12-12	dhcp: Add function to stop the DHCP client	Patrik Flykt
	The client is stopped and brought back to its initial state.
2013-12-12	dhcp: Support seconds elapsed since start of DHCP negotiation	Patrik Flykt
	It was noticed by Grant Erickson in ConnMan commit 95e15c09350acf58d4707056ae2614570883ef66 that: "Certain DHCP servers, such as that implemented in Mac OS X (< 10.7) for its "Internet Sharing" feature, refuse to issue a DHCP lease to clients that have not set a non-zero value in their DISCOVER or REQUEST packets."
2013-12-12	dhcp: Add test for discover DHCP packet creation	Patrik Flykt
	Set a fake MAC address and emulate raw packet sending. When the buffer containing the Discover message is received, check selected IP and UDP headers and compute IP header and UDP message checksums. Also send the DHCP message for option parsing and expect a successful outcome.
2013-12-12	dhcp: Add DHCP discover sending	Patrik Flykt
	On starting the client, use the supplied interface mac address and create a transaction id. Puzzle together an IP/UDP/DHCP Discover message, compute checksums and send it out as a raw packet. Create an additional function that constructs default options common to all DHCP messages. Set the DHCP Client ID option as noticed by Grant Erickson in ConnMan commit b18d9798b3a0ae46ed87d6d2be8d5a474bf3ab1e: "Some Internet gateways and Wi-Fi access points are unhappy when the DHCPv4 client-id option (61) is missing and will refuse to issue a DHCP lease."
2013-12-12	dhcp: Add function for sending a raw packet	Patrik Flykt
	Open a packet socket, create a link level header, send packet and close socket. Adding it to a separate file makes testing of the DHCP sending much easier, as the test program can supply any socket to the DHCP client code.
2013-12-12	dhcp: Add test function for computing checksum	Patrik Flykt

2013-12-12	dhcp: Add option append tests	Patrik Flykt
	Add checks for invalid lengths and parameters when using the option appending function. Add also checks for adding options, see to it that the resulting array is identical to the array of options added.
2013-12-12	dhcp: Add tests for DHCP options, file and sname fields	Patrik Flykt
	Add a structure describing the DHCP file, sname and trailing options fields. Create a messge holding these fields and call the internal option parsing function. In the test callback function verify that only regular options are passed and figure out which part of the DHCP message is the one that is being processed. As the test program knows the full contents of the test options in the test structure, skip all non-regular fields and verify that the option provided to the callback indeed is the one expected. Check also if non-regular option fields are to be ignored in the end of the option field as the callback is not called again and the final check when the whole message has been processed needs to be successful. Add a boolean flag for pretty-printing, anticipate there will be a nice option to toggle it in the future.
2013-12-12	dhcp: Add buffer length and invalid cookie tests for DHCP options	Patrik Flykt
	Create an initial simple test program for these two cases.
2013-12-12	dhcp: Add option appending and parsing	Patrik Flykt
	Add functions to append and parse DHCP options. Not all options are passed to the callback function, the ones not exposed are pad, end, message type and overload. If indicated by the overload option, file and sname fields will be examined for more options. The option functions are internal to DHCP, add a new header files for interal function prototypes.
2013-12-12	build: Add initial build support	Patrik Flykt
	The client test program is the only one to be built so far.
2013-12-12	dhcp: Add test for DHCP client initialization and parameter setting	Patrik Flykt

2013-12-12	dhcp: Add DHCP client initialization	Patrik Flykt
	Provide functionality for initializing a DHCP client struct, setting interface index, last used address and additional options to request. On initialization the most useful options are added by default.