summaryrefslogtreecommitdiff
path: root/src/libsystemd-network/dhcp-internal.h
AgeCommit message (Collapse)Author
2014-06-17sd-dhcp: checksum - make endianess-neutralTom Gundersen
For efficiency, we group bytes together before adding them up. This is guaranteed to always work (regardless of the byte order) as long as the i-th byte in each group lign up with the i-th byte in each other group. On big-endian machines this broke when handling the trailing few bytes which did not make up a full group of 4 bytes. This patch fixes the problem by explicitly creating a 4 byte zero-padded group out of the trailing bytes. Reported and tested by Thomas Ritter <th.ritter@gmx.at>.
2014-05-21sd-dhcp: option_append - support falling back to 'sname' and 'file'Tom Gundersen
2014-05-20sd-dhcp: refactor dhcp_option_appendTom Gundersen
Store a pointer to the options in the DHCPMessage struct, and pass this together with an offset around, rather than a uint8_t**. This avoids us having to (re)compute the pointer; and changes dhcp_option_append from adjusting both the pointer to the next option and the remaining size of the options, to just adjusting the current offset. This makes the code a bit simpler to follow IMHO, but there should be no functional change.
2014-05-06dhcp-network: don't pass ifindex to bind_udp_socketTom Gundersen
UDP sockets can anyway not be bound to specific netdev's. The packages would have to be filtered when received instead.
2014-04-08sd-dhcp-client: include client id in debug messagesTom Gundersen
2014-04-07libsystemd-network: Speed up checksum computation using 64 bit integersTom Gundersen
Improve the checksum computation by using 64 bit integers instead of the 16 bit integers in the existing implementation. This change speeds up the computation with approximately 78% both on 64 bit and 32 bit systems. Please see RFC 1071 for details.
2014-04-06sd-dhcp-client: improve BPFTom Gundersen
Try a bit harder to make the kernel drop packets not for us. This should reduce the number of wakeups from n^2 to n in the number of dhcp clients, which admittedly only makes a differenc in very extreme cases.
2014-03-19libsystemd-network: Export checksum function to test casePatrik Flykt
Remove identical checksum function implementation from the test case code.
2014-03-11sd-dhcp: generalise ip header generationTom Gundersen
This will be needed for sd-dhcp-server.
2014-02-28sd-network: add new libraryTom Gundersen
This is similar to sd-login, but exposes the state of networkd rather than logind. Include it in libsystemd-dhcp and rename it to libsystemd-network.