cinap_lenrek d2a7d88662 devip: implement network address translation routes ... This adds a new route "t"-flag that enables network address translation, replacing the source address (and local port) of a forwarded packet to one of the outgoing interface. The state for a translation is kept in a new Translation structure, which contains two Iphash entries, so it can be inserted into the per protocol 4-tuple hash table, requiering no extra lookups. Translations have a low overhead (~200 bytes on amd64), so we can have many of them. They get reused after 5 minutes of inactivity or when the per protocol limit of 1000 entries is reached (then the one with longest inactivity is reused). The protocol needs to export a "forward" function that is responsible for modifying the forwarded packet, and then handle translations in its input function for iphash hits with Iphash.trans != 0. This patch also fixes a few minor things found during development: - Include the Iphash in the Conv structure, avoiding estra malloc - Fix ttl exceeded check (ttl < 1 -> ttl <= 1) - Router should not reply with ttl exceeded for multicast flows - Extra checks for icmp advice to avoid protocol confusions.		2022-03-12 20:53:17 +00:00
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1	gba: fix flash chip id for 128k and add setting	2022-02-10 00:35:13 +00:00
2	nusb: Fix handling of interface altsetting.	2022-02-21 19:50:16 +00:00
3	devip: implement network address translation routes	2022-03-12 20:53:17 +00:00
4	0intro(1), acme(1), con(1), rcpu(1), rio(1), namespace(4), authsrv(6), aan(8): cpu -> rcpu	2021-12-31 15:53:00 +00:00
5
6	0intro(1), acme(1), con(1), rcpu(1), rio(1), namespace(4), authsrv(6), aan(8): cpu -> rcpu	2021-12-31 15:53:00 +00:00
7	remove juke (use play or zuke instead)	2021-04-13 13:25:24 +02:00
8	ip/tftpd: add -m argument for name substitution using regular expressions	2022-02-05 01:34:22 +00:00
9	fix manpage references for dup(2), kproc(9) and panic(9).	2021-09-08 18:22:35 +00:00
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mkfile	manual: don't match nonexistent file while preprocessing	2021-06-27 00:13:58 +00:00
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