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CVS log for src/usr.sbin/switchd/Attic/ofp.c


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Revision 1.19, Thu Nov 11 09:59:19 2021 UTC (2 years, 6 months ago) by claudio
Branch: MAIN
CVS Tags: HEAD
Changes since 1.18: +1 -1 lines
FILE REMOVED

Retire switchd and switchctl. While interesting they never managed to
really get into a usable state. The OpenFlow API is mostly superseeded
by P4 and so this is a bit of a dead end.
OK akoshibe@ yasuoka@ deraadt@ kn@ patrick@ sthen@

Revision 1.18 / (download) - annotate - [select for diffs], Thu Dec 22 15:31:43 2016 UTC (7 years, 5 months ago) by rzalamena
Branch: MAIN
CVS Tags: OPENBSD_7_0_BASE, OPENBSD_7_0, OPENBSD_6_9_BASE, OPENBSD_6_9, OPENBSD_6_8_BASE, OPENBSD_6_8, OPENBSD_6_7_BASE, OPENBSD_6_7, OPENBSD_6_6_BASE, OPENBSD_6_6, OPENBSD_6_5_BASE, OPENBSD_6_5, OPENBSD_6_4_BASE, OPENBSD_6_4, OPENBSD_6_3_BASE, OPENBSD_6_3, OPENBSD_6_2_BASE, OPENBSD_6_2, OPENBSD_6_1_BASE, OPENBSD_6_1
Changes since 1.17: +2 -5 lines
Diff to previous 1.17 (colored)

Learn remote switch flow tables properties to find out where to install
the default table-miss flow for OpenFlow 1.3.5. This is enough to make
switchd(8) to work with switch(4) and HP 3800 switch out-of-the-box.

ok reyk@

Revision 1.17 / (download) - annotate - [select for diffs], Fri Dec 2 14:39:46 2016 UTC (7 years, 6 months ago) by rzalamena
Branch: MAIN
Changes since 1.16: +76 -4 lines
Diff to previous 1.16 (colored)

Implement the connection state machine for OpenFlow 1.0 and 1.3 to detect
invalid state transitions and invalid protocol version switching after the
hello messages exchange.

ok reyk@

Revision 1.16 / (download) - annotate - [select for diffs], Tue Nov 22 17:21:56 2016 UTC (7 years, 6 months ago) by rzalamena
Branch: MAIN
Changes since 1.15: +12 -1 lines
Diff to previous 1.15 (colored)

Implement support for version negotiation using hello messages. This
also prevents connections from switching the version in the middle of
the operation.

tweak from and ok reyk@

Revision 1.15 / (download) - annotate - [select for diffs], Fri Nov 4 22:27:08 2016 UTC (7 years, 6 months ago) by reyk
Branch: MAIN
Changes since 1.14: +1 -25 lines
Diff to previous 1.14 (colored)

Move ofp_output() into ofp_common.c and few function prototypes into
switchd.h.  No functional change.

Revision 1.14 / (download) - annotate - [select for diffs], Wed Oct 12 19:07:42 2016 UTC (7 years, 7 months ago) by reyk
Branch: MAIN
Changes since 1.13: +12 -21 lines
Diff to previous 1.13 (colored)

Start reworking the "device" support in switchd: Once connected, a
device is just an fd that is connected to a switch, either via TCP or
via /dev/switch.  Change the switchctl from "device add" to "connect"
etc.  This change is an intermediate step towards other changes,
including the configuration grammar, so a few things will be left
undocumented for now.

switchctl(8) examples,
switchctl connect /dev/switch0
switchctl connect /dev/switch0 forward-to 10.1.1.1
switchctl connect 127.0.0.1
switchctl connect 127.0.0.1 forward-to 10.1.1.1
switchctl disconnect /dev/switch0

Discussed with rzalamena@

Revision 1.13 / (download) - annotate - [select for diffs], Wed Oct 5 16:40:55 2016 UTC (7 years, 7 months ago) by reyk
Branch: MAIN
Changes since 1.12: +1 -35 lines
Diff to previous 1.12 (colored)

Remove ofp_validate_header() here

Revision 1.12 / (download) - annotate - [select for diffs], Fri Sep 30 12:48:27 2016 UTC (7 years, 8 months ago) by reyk
Branch: MAIN
Changes since 1.11: +2 -2 lines
Diff to previous 1.11 (colored)

Remove local copy of ofp.h and use net/ofp.h instead

Revision 1.11 / (download) - annotate - [select for diffs], Fri Sep 30 12:33:43 2016 UTC (7 years, 8 months ago) by reyk
Branch: MAIN
Changes since 1.10: +3 -2 lines
Diff to previous 1.10 (colored)

Disable write events if there is nothing to write.

Revision 1.10 / (download) - annotate - [select for diffs], Fri Sep 30 11:57:57 2016 UTC (7 years, 8 months ago) by reyk
Branch: MAIN
Changes since 1.9: +58 -196 lines
Diff to previous 1.9 (colored)

Implement socket server code that properly handles async I/O, partial
messages, multiple messages per buffer and important things like
connection limits and file descriptor accounting.  It works with TCP
connections as well as switch(4).  The ofrelay.c part replaces
networking that was in ofp.c and will soon handle all socket
connections of switchd.  It is called "ofrelay" because it will be
used as client, server, and forwarder.

OK rzalamena@

Revision 1.9 / (download) - annotate - [select for diffs], Thu Sep 29 18:25:54 2016 UTC (7 years, 8 months ago) by reyk
Branch: MAIN
Changes since 1.8: +2 -2 lines
Diff to previous 1.8 (colored)

Rename ofp_send to ofp_output

Revision 1.8 / (download) - annotate - [select for diffs], Mon Sep 26 08:48:05 2016 UTC (7 years, 8 months ago) by rzalamena
Branch: MAIN
Changes since 1.7: +4 -2 lines
Diff to previous 1.7 (colored)

Fix a memory leak and a loop in the ofp_read() that happens every time a
message is received or a socket is closed.

This is just a temporary fix to avoid switchd(8) from hogging the cpu and
leaking memory while testing.

ok reyk@

Revision 1.7 / (download) - annotate - [select for diffs], Wed Sep 14 13:46:51 2016 UTC (7 years, 8 months ago) by rzalamena
Branch: MAIN
Changes since 1.6: +3 -8 lines
Diff to previous 1.6 (colored)

Teach switchd(8) how to fork+exec.

Note: this daemon has the -Wcast-qual compilation flag which trigger a
warning that wasn't enable in httpd(8) or relayd(8). This will be fixed
in a next diff and then synchronized with other daemons.

ok reyk@

Revision 1.6 / (download) - annotate - [select for diffs], Thu Jul 21 07:58:44 2016 UTC (7 years, 10 months ago) by reyk
Branch: MAIN
CVS Tags: OPENBSD_6_0_BASE, OPENBSD_6_0
Changes since 1.5: +43 -6 lines
Diff to previous 1.5 (colored)

Turn ofp*_debug functions into ofp*_validate functions to follow a
similar approach like iked: first validate the packet, then parse it,
and execute actions.  debug logging is a side effect of validation.

Revision 1.5 / (download) - annotate - [select for diffs], Wed Jul 20 21:06:09 2016 UTC (7 years, 10 months ago) by reyk
Branch: MAIN
Changes since 1.4: +2 -2 lines
Diff to previous 1.4 (colored)

fix typos in comments

Revision 1.4 / (download) - annotate - [select for diffs], Wed Jul 20 21:01:06 2016 UTC (7 years, 10 months ago) by reyk
Branch: MAIN
Changes since 1.3: +13 -4 lines
Diff to previous 1.3 (colored)

pledge(2) all the switchd processes.

Revision 1.3 / (download) - annotate - [select for diffs], Wed Jul 20 14:15:08 2016 UTC (7 years, 10 months ago) by reyk
Branch: MAIN
Changes since 1.2: +2 -1 lines
Diff to previous 1.2 (colored)

Update OpenFlow 1.3 stub based on the 1.0 code.

Revision 1.2 / (download) - annotate - [select for diffs], Tue Jul 19 18:11:08 2016 UTC (7 years, 10 months ago) by reyk
Branch: MAIN
Changes since 1.1: +2 -2 lines
Diff to previous 1.1 (colored)

Correctly use ssize_t instead of size_t for read/write return values.
Pointed out by David Hill and clang.

Revision 1.1 / (download) - annotate - [select for diffs], Tue Jul 19 16:54:26 2016 UTC (7 years, 10 months ago) by reyk
Branch: MAIN

Import switchd(8), a basic WIP OpenFlow implementation for OpenBSD.

switchd consists of two parts:
1. switchd(8) and switchctl(8), an OpenFlow controller or "vswitch".
2. switch(4), an OpenFlow-aware kernel "bridge".

This the 1st part, the driver will be imported later.  The code will
remain disabled for a while, but it helps development to have it in
the tree.  switchd currently supports partial OpenFlow 1.0, but the
goal is to use OpenFlow 1.3.5 instead (switch(4) already does 1.3.5).

For more background information see:
http://www.openbsd.org/papers/bsdcan2016-switchd.pdf
https://youtu.be/Cuo0qT-lqig

With help from yasuoka@ goda@
Import discussed with deraadt@

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