From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>
There's no reason for trace-cmd agent not to be able to do the communication
over TCP instead of vsockets. Have trace-cmd record pass in a host name or
IP address (IPv4 or IPv6) to the -A option and if the cid or guest name
fails, then try host name or IP address.
This will fall back to the P2P time sync protocol and recordings from
different hosts can be synchronized.
Also add more debug prints when the --debug option is used. This proved
useful to debugging this code.
Changes since v2: https://lore.kernel.org/all/20220417184538.1044417-1-rostedt@xxxxxxxxxxx/
- Added comments about USE_UDP as being the default, as well as
explicitly setting it to zero. (Tzvetomir Stoyanov)
- Appended https://lore.kernel.org/all/20220417211315.1049221-1-rostedt@xxxxxxxxxxx/
to the patch set.
- Added more warnings about the insecurities of using trace-cmd agent
with the -N option. (Tzvetomir Stoyanov)
Changes since v1: https://lore.kernel.org/r/20220417011958.1013591-1-rostedt@xxxxxxxxxxx
- Rebased on the above dependency.
- Added patch to allow compiling of agent without vsocket support.
Steven Rostedt (Google) (11):
trace-cmd record: Move port_type into instance
trace-cmd library: Add network roles for time sync
trace-cmd record: Allow for ip connections to agents
trace-cmd agent: Allow for ip connections from the agent
trace-cmd library: Create tracecmd_debug() for debug printing
trace-cmd: Add debug prints for network connections
trace-cmd: Add print helpers to show connections
trace-cmd: Override tracecmd_debug() to show thread id
trace-cmd agent: Have agent work without vsockets available
trace-cmd agent: Have -N take a host name
trace-cmd agent: Add documentation
Documentation/trace-cmd/trace-cmd-agent.1.txt | 62 ++++
lib/trace-cmd/Makefile | 2 +-
.../include/private/trace-cmd-private.h | 5 +
lib/trace-cmd/include/trace-tsync-local.h | 6 +-
lib/trace-cmd/trace-msg.c | 12 +-
lib/trace-cmd/trace-timesync-ptp.c | 4 +-
lib/trace-cmd/trace-timesync.c | 2 +
lib/trace-cmd/trace-util.c | 12 +
tracecmd/Makefile | 5 +-
tracecmd/include/trace-local.h | 25 +-
tracecmd/trace-agent.c | 126 ++++++--
tracecmd/trace-cmd.c | 20 +-
tracecmd/trace-listen.c | 139 +++++++--
tracecmd/trace-record.c | 269 ++++++++++++------
tracecmd/trace-usage.c | 5 +-
tracecmd/trace-vsock.c | 20 ++
16 files changed, 562 insertions(+), 152 deletions(-)
create mode 100644 Documentation/trace-cmd/trace-cmd-agent.1.txt
--
2.35.1
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