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Martin Stein 9a37ccfe29 nic_router: incremental L4 checksum updates 
The checksums for forwarded/routed UDP, TCP and ICMP, used to be always
re-calculated from scratch in the NIC router although the router changes only
a few packet fields. This commit replaces the old approach whereever sensible
with an algorithm for incremental checksum updates suggested in RFC 1071.
The goal is to improve router performance.

Ref #4555
2022-08-10 13:33:02 +02:00
..
arp.h net: use Size_guard for packet-data accessors 2018-05-30 13:36:11 +02:00
dhcp.h net: fix conversion compiler errors 2022-05-25 12:23:02 +02:00
ethernet.h net: add methods required for WireGuard port 2022-05-25 12:23:02 +02:00
icmp.h nic_router: incremental L4 checksum updates 2022-08-10 13:33:02 +02:00
internet_checksum.h nic_router: incremental L4 checksum updates 2022-08-10 13:33:02 +02:00
ipv4.h nic_router: incremental L4 checksum updates 2022-08-10 13:33:02 +02:00
mac_address.h os: avoid implicit conversions 2021-12-17 15:04:45 +01:00
netaddress.h net: circumvent stringop-overflow error 2021-05-05 11:35:31 +02:00
port.h net: fix conversion compiler errors 2022-05-25 12:23:02 +02:00
size_guard.h net: use Size_guard for packet-data accessors 2018-05-30 13:36:11 +02:00
sntp.h sntp_client: report received transmit timestamp 2019-08-21 12:37:02 +02:00
tcp.h nic_router: incremental L4 checksum updates 2022-08-10 13:33:02 +02:00
udp.h nic_router: incremental L4 checksum updates 2022-08-10 13:33:02 +02:00