udebug-cli: add support for streaming tracing data

Signed-off-by: Felix Fietkau <[email protected]>

ucode: add support for fetching kernel tracepoint events

tracepoints can be opened as a ring with the same API as other udebug rings.
This allows trace events to be mixed with udebug entries

Signed-off-by: Felix Fietkau <[email protected]>

ucode: add function for getting the number of entries in a snapshot

Signed-off-by: Felix Fietkau <[email protected]>

ucode: add ferror() call to check for closed write file descriptor

Fixes stale udebug stream processes when run over ssh

Signed-off-by: Felix Fietkau <[email protected]>

udebug-cli: add support for overriding config on the command line

Either by running udebug set <...> or udebug -e <...> <cmd>, you can
explicitly set, which services should be enabled.

Signed-off-by: Felix Fietkau <[email protected]>

udebugd: add support for setting an override config

This makes it easier to change the config at runtime without being affected
by reload_config calls or going through uci

Signed-off-by: Felix Fietkau <[email protected]>

ucode: fix entries/size confusion

Signed-off-by: Felix Fietkau <[email protected]>

udebug-cli: add logstream command

This prints all log messages received on rings in string format

Signed-off-by: Felix Fietkau <[email protected]>

ucode: add const entries for enum udebug_format

Signed-off-by: Felix Fietkau <[email protected]>

ucode: add function for getting ring information

Signed-off-by: Felix Fietkau <[email protected]>

ucode: add timestamp argument to foreach()

Signed-off-by: Felix Fietkau <[email protected]>

ucode: fix allocation size of local ring meta

Signed-off-by: Felix Fietkau <[email protected]>

ucode: allow calling udebug.init() multiple times

Simplify using it from multiple places within an application

Signed-off-by: Felix Fietkau <[email protected]>

ucode: support appending array data, similar to socket.send()

Signed-off-by: Felix Fietkau <[email protected]>

ucode: add support for specifying ring format

Support passing packet data from ucode

Signed-off-by: Felix Fietkau <[email protected]>

ucode: drop use ucv_resource_create

Support running in multiple vms

Signed-off-by: Felix Fietkau <[email protected]>

ucode: use ucv_resource_create_ex for remote rings

Stop using the registry

Signed-off-by: Felix Fietkau <[email protected]>

udebug-cli: stop event loop on write failure

Signed-off-by: Felix Fietkau <[email protected]>

ucode: add error reporting to pcap_write

Return null on error, true if packets were written,
false if no data available.

Signed-off-by: Felix Fietkau <[email protected]>

ucode: use FILE handle for pcap output

Signed-off-by: Felix Fietkau <[email protected]>

udebug-cli: fix terminating uloop

Signed-off-by: Felix Fietkau <[email protected]>

lib-ucode.c: add #define _GNU_SOURCE

When compiling with glibc, an error is thrown stating that vasprintf is not defined.
In order to use vasprintf from glibc, the #define _GNU_SOURCE is needed.

Signed-off-by: Matthias Franck <[email protected]>

ucode: check for errors in ftruncate()

Signed-off-by: Felix Fietkau <[email protected]>

lib: add netlink handler function

Signed-off-by: Felix Fietkau <[email protected]>

lib-ucode: truncate pcap files

avoid keeping stale data

Signed-off-by: Felix Fietkau <[email protected]>

lib-ucode: retry partial writes

Signed-off-by: Felix Fietkau <[email protected]>

lib: fix handling global enable flag

don't override it for individual rings

Signed-off-by: Felix Fietkau <[email protected]>

client: send confirmation messages for ring add/remove

Signed-off-by: Felix Fietkau <[email protected]>

lib: add helper function for applying ring config

Signed-off-by: Felix Fietkau <[email protected]>

ring: add debug messages for ring alloc errors

Signed-off-by: Felix Fietkau <[email protected]>

ubus: report ring size and data size via ubus api

Signed-off-by: Felix Fietkau <[email protected]>

lib: fix dealing with udebugd restarts

When re-subscribing, also re-request the configuration in order to
avoid using stale data

Signed-off-by: Felix Fietkau <[email protected]>

lib: move library code to libubox, add ubus config handling code

Signed-off-by: Felix Fietkau <[email protected]>

lib: fix avl tree lookup

The delta between IDs can be bigger than INT_MAX, causing order mismatch
in the tree and lookup failures

Signed-off-by: Felix Fietkau <[email protected]>

lib: remove leftover debug code

Signed-off-by: Felix Fietkau <[email protected]>

server: properly handle unclaimed file descriptors

Signed-off-by: Felix Fietkau <[email protected]>

README: add wireshark info

Signed-off-by: Felix Fietkau <[email protected]>

ring: add missing fread return code check

Fixes build issue with glibc

Signed-off-by: Felix Fietkau <[email protected]>

lib: unmap full ring buffer

Signed-off-by: Felix Fietkau <[email protected]>

fix infinite loop on client poll

Signed-off-by: Felix Fietkau <[email protected]>

ubus: add config support

issue notifications for config changes

Signed-off-by: Felix Fietkau <[email protected]>

lib: cancel reconnect timer on free

Signed-off-by: Felix Fietkau <[email protected]>

udebug-cli: cosmetic fix

Signed-off-by: Felix Fietkau <[email protected]>

README.md: update CLI help

Signed-off-by: Felix Fietkau <[email protected]>

ring: close ring fd on free

Signed-off-by: Felix Fietkau <[email protected]>

udebug-cli: fix error message

Signed-off-by: Felix Fietkau <[email protected]>

Initial import

Signed-off-by: Felix Fietkau <[email protected]>